coreboot-gerrit August 2015

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Patch set updated for coreboot: TPM: Merge of two TPM API's into one API.
by Philipp Deppenwiese 13 Aug '15

13 Aug '15

Philipp Deppenwiese (zaolin(a)das-labor.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10542 -gerrit commit 74b45bd38ae47478c91e2075226b7a3996f4e270 Author: Philipp Deppenwiese <zaolin(a)das-labor.org> Date: Sat Jun 13 23:35:37 2015 +0200 TPM: Merge of two TPM API's into one API. Currently coreboot includes two TPM software implementations. Following changes are done: + Moved pc80/tpm to tpm directory because it's not pc80 specific. + Use Google's lib/tlcl.* small tpm software stack as the main one. + Remove the old one drivers/pc80/tpm/romstage.c which can't be used for vboot2. + Split & Merge implementations into TSS and TSPI. -> Rename tlcl* files into tss which is the common name. -> Move init_tpm(void) function from drivers/pc80/tpm/romstage.c into the lib/tpm/tspi.c which is also the common name for highlevel tpm functions based on tss. -> Put the tss and tspi files into tpm folders in lib/ and include/ . -> Change header includes so that tpm.h can be found in include/pc80/ and software stack related stuff in include/tpm. + Revert pragma once statements from previous commit. Compile: VBOOT2 Feature = yes Coreboot TPM Feature = yes Run: VBOOT2 Feature = not tested Coreboot TPM Feature = yes Change-Id: I8cbcd723d83ffcc0c1c47c58438dccdb16bb7cf7 Signed-off-by: Philipp Deppenwiese <zaolin(a)das-labor.org> --- src/cpu/intel/haswell/romstage.c | 2 +- src/drivers/pc80/Kconfig | 2 - src/drivers/pc80/Makefile.inc | 2 +- src/drivers/pc80/tpm/Kconfig | 46 -- src/drivers/pc80/tpm/Makefile.inc | 3 - src/drivers/pc80/tpm/acpi/tpm.asl | 196 ------ src/drivers/pc80/tpm/chip.h | 35 - src/drivers/pc80/tpm/romstage.c | 255 ------- src/drivers/pc80/tpm/tpm.c | 778 --------------------- src/drivers/tpm/Kconfig | 46 ++ src/drivers/tpm/Makefile.inc | 2 + src/drivers/tpm/acpi/tpm.asl | 196 ++++++ src/drivers/tpm/chip.h | 35 + src/drivers/tpm/tpm.c | 778 +++++++++++++++++++++ src/include/antirollback.h | 2 +- src/include/tpm.h | 71 -- src/include/tpm/tpm.h | 69 ++ src/include/tpm/tspi.h | 29 + src/include/tpm/tss.h | 136 ++++ src/include/tpm/tss_constants.h | 98 +++ src/include/tpm_lite/tlcl.h | 137 ---- src/include/tpm_lite/tss_constants.h | 96 --- src/lib/Makefile.inc | 8 +- src/lib/mocked_tlcl.c | 136 ---- src/lib/tlcl.c | 327 --------- src/lib/tlcl_internal.h | 61 -- src/lib/tlcl_structures.h | 138 ---- src/lib/tpm/Makefile.inc | 13 + src/lib/tpm/mocked_tss.c | 136 ++++ src/lib/tpm/tspi.c | 95 +++ src/lib/tpm/tss.c | 331 +++++++++ src/lib/tpm/tss_internal.h | 61 ++ src/lib/tpm/tss_structures.h | 138 ++++ src/mainboard/google/auron/acpi/mainboard.asl | 2 +- src/mainboard/google/auron/devicetree.cb | 2 +- src/mainboard/google/cyan/acpi/mainboard.asl | 2 +- src/mainboard/google/cyan/devicetree.cb | 2 +- src/mainboard/google/glados/acpi/mainboard.asl | 2 +- src/mainboard/google/glados/devicetree.cb | 2 +- src/mainboard/google/jecht/acpi/mainboard.asl | 2 +- src/mainboard/google/link/romstage.c | 2 +- src/mainboard/google/parrot/romstage.c | 2 +- src/mainboard/google/samus/acpi/mainboard.asl | 2 +- src/mainboard/google/samus/devicetree.cb | 2 +- src/mainboard/google/stout/romstage.c | 2 +- src/mainboard/intel/emeraldlake2/romstage.c | 2 +- src/mainboard/intel/kunimitsu/acpi/mainboard.asl | 2 +- src/mainboard/intel/sklrvp/acpi/mainboard.asl | 2 +- src/mainboard/intel/strago/acpi/mainboard.asl | 2 +- src/mainboard/intel/strago/devicetree.cb | 2 +- src/mainboard/lenovo/t420s/devicetree.cb | 2 +- src/mainboard/lenovo/t420s/dsdt.asl | 2 +- src/mainboard/lenovo/t430s/devicetree.cb | 2 +- src/mainboard/lenovo/t430s/dsdt.asl | 2 +- src/mainboard/lenovo/t520/devicetree.cb | 2 +- src/mainboard/lenovo/t520/dsdt.asl | 2 +- src/mainboard/lenovo/t530/devicetree.cb | 2 +- src/mainboard/lenovo/t530/dsdt.asl | 2 +- src/mainboard/lenovo/x201/devicetree.cb | 2 +- src/mainboard/lenovo/x201/dsdt.asl | 2 +- src/mainboard/lenovo/x201/romstage.c | 2 +- src/mainboard/lenovo/x220/devicetree.cb | 2 +- src/mainboard/lenovo/x220/dsdt.asl | 2 +- src/mainboard/lenovo/x230/devicetree.cb | 2 +- src/mainboard/lenovo/x230/dsdt.asl | 2 +- src/mainboard/samsung/lumpy/romstage.c | 2 +- src/mainboard/samsung/stumpy/romstage.c | 2 +- .../intel/sandybridge/romstage_native.c | 2 +- src/soc/intel/baytrail/romstage/romstage.c | 2 +- src/soc/intel/braswell/romstage/romstage.c | 2 +- src/soc/intel/broadwell/romstage/romstage.c | 2 +- .../google/chromeos/vboot2/antirollback.c | 4 +- 72 files changed, 2207 insertions(+), 2331 deletions(-) diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index 6adb8be..c24883b 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -44,7 +44,7 @@ #include "northbridge/intel/haswell/raminit.h" #include "southbridge/intel/lynxpoint/pch.h" #include "southbridge/intel/lynxpoint/me.h" -#include <tpm.h> +#include <tpm/tspi.h> static inline void reset_system(void) { diff --git a/src/drivers/pc80/Kconfig b/src/drivers/pc80/Kconfig index 0ed1ecf..808de17 100644 --- a/src/drivers/pc80/Kconfig +++ b/src/drivers/pc80/Kconfig @@ -22,6 +22,4 @@ config DRIVERS_MC146818 default y if ARCH_X86 select RTC -source src/drivers/pc80/tpm/Kconfig - endif diff --git a/src/drivers/pc80/Makefile.inc b/src/drivers/pc80/Makefile.inc index 0788cc7..838f336 100644 --- a/src/drivers/pc80/Makefile.inc +++ b/src/drivers/pc80/Makefile.inc @@ -13,7 +13,7 @@ romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc_early.c romstage-$(CONFIG_SPKMODEM) += spkmodem.c -subdirs-y += tpm vga +subdirs-y += vga cbfs-files-$(CONFIG_HAVE_CMOS_DEFAULT) += cmos.default cmos.default-file = $(CONFIG_CMOS_DEFAULT_FILE):nvramtool diff --git a/src/drivers/pc80/tpm/Kconfig b/src/drivers/pc80/tpm/Kconfig deleted file mode 100644 index f6a7948..0000000 --- a/src/drivers/pc80/tpm/Kconfig +++ /dev/null @@ -1,46 +0,0 @@ -config MAINBOARD_HAS_LPC_TPM - bool - default n - help - Board has TPM support - -config LPC_TPM - bool "Enable TPM support" - depends on MAINBOARD_HAS_LPC_TPM - default n - help - Enable this option to enable LPC TPM support in coreboot. - - If unsure, say N. - -config TPM_TIS_BASE_ADDRESS - hex - default 0xfed40000 - depends on LPC_TPM - help - This can be used to adjust the TPM memory base address. - The default is specified by the TCG PC Client Specific TPM - Interface Specification 1.2 and should not be changed unless - the TPM being used does not conform to TPM TIS 1.2. - -config TPM_INIT_FAILURE_IS_FATAL - bool - default n - depends on LPC_TPM - help - What to do if TPM init failed. If true, force a hard reset, - otherwise just log error message to console. - -config SKIP_TPM_STARTUP_ON_NORMAL_BOOT - bool - default n - depends on LPC_TPM - help - Skip TPM init on normal boot. Useful if payload does TPM init. - -config TPM_DEACTIVATE - bool "Deactivate TPM" - default n - depends on LPC_TPM - help - Deactivate TPM by issuing deactivate command. diff --git a/src/drivers/pc80/tpm/Makefile.inc b/src/drivers/pc80/tpm/Makefile.inc deleted file mode 100644 index 089d067..0000000 --- a/src/drivers/pc80/tpm/Makefile.inc +++ /dev/null @@ -1,3 +0,0 @@ -romstage-$(CONFIG_LPC_TPM) += tpm.c -ramstage-$(CONFIG_LPC_TPM) += tpm.c -romstage-$(CONFIG_LPC_TPM) += romstage.c diff --git a/src/drivers/pc80/tpm/acpi/tpm.asl b/src/drivers/pc80/tpm/acpi/tpm.asl deleted file mode 100644 index ece63e2..0000000 --- a/src/drivers/pc80/tpm/acpi/tpm.asl +++ /dev/null @@ -1,196 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -/* Trusted Platform Module */ - -Device (TPM) -{ - Name (_HID, EISAID ("PNP0C31")) - Name (_CID, 0x310cd041) - Name (_UID, 1) - - Method (_STA, 0) - { -#if CONFIG_LPC_TPM && !CONFIG_TPM_DEACTIVATE - Return (0xf) -#else - Return (0x0) -#endif - } - - Name (IBUF, ResourceTemplate () - { - /* Updated based on TPM interrupt for Locality 0 */ - Interrupt (ResourceConsumer, Edge, ActiveHigh, - Exclusive, , , TIRQ) { 0 } - }) - - Name (RBUF, ResourceTemplate () - { - IO (Decode16, 0x2e, 0x2e, 0x01, 0x02) - Memory32Fixed (ReadWrite, CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) - }) - - Method (_CRS, 0, NotSerialized) - { - OperationRegion (TREG, SystemMemory, - CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) - Field (TREG, ByteAcc, NoLock, Preserve) - { - /* TPM_INT_ENABLE_0 */ - Offset (0x0008), - , 3, - ITPL, 2, /* Interrupt type and polarity */ - - /* TPM_INT_VECTOR_0 */ - Offset (0x000C), - IVEC, 4, /* SERIRQ vector */ - } - - If (LGreater (IVEC, 0)) { - /* Update interrupt vector */ - CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) - Store (IVEC, TVEC) - - /* Update interrupt type and polarity */ - CreateBitField (^IBUF, ^TIRQ._HE, TTYP) - CreateBitField (^IBUF, ^TIRQ._LL, TPOL) - CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) - - If (LEqual (ITPL, 0x0)) { - /* Active-High Level-Triggered Shared */ - Store (Zero, TPOL) - Store (Zero, TTYP) - Store (One, TSHR) - } ElseIf (LEqual (ITPL, 0x1)) { - /* Active-Low Level-Triggered Shared */ - Store (One, TPOL) - Store (Zero, TTYP) - Store (One, TSHR) - } ElseIf (LEqual (ITPL, 0x2)) { - /* Active-High Edge-Triggered Exclusive */ - Store (Zero, TPOL) - Store (One, TTYP) - Store (Zero, TSHR) - } ElseIf (LEqual (ITPL, 0x3)) { - /* Active-Low Edge-Triggered Exclusive */ - Store (One, TPOL) - Store (One, TTYP) - Store (Zero, TSHR) - } - - /* Merge IRQ with base address */ - Return (ConcatenateResTemplate (RBUF, IBUF)) - } Else { - Return (RBUF) - } - } - - /* Dummy _DSM to make Bitlocker work. */ - Method (_DSM, 4, Serialized) - { - /* Physical presence interface. - This is used to submit commands like "Clear TPM" to - be run at next reboot provided that user confirms them. - Spec allows user to cancel all commands and/or - configure BIOS to reject commands. So we pretend that - user did just this: cancelled everything. If user - really wants to clear TPM the only option now is to do it manually - in payload. - */ - If (LEqual (Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653"))) - { - If (LEqual (Arg2, 0)) - { - /* Functions 1-8. */ - Return (Buffer (2) { 0xFF, 0x01 }) - } - - /* Interface version: 1.2 */ - If (LEqual (Arg2, 1)) - { - Return ("1.2") - } - - /* Submit operations: drop on the floor and return success. */ - If (LEqual (Arg2, 2)) - { - Return (0x00) - } - - /* Pending operation: none. */ - If (LEqual (Arg2, 3)) - { - Return (Package (2) { 0, 0 }) - } - - /* Pre-OS transition method: reboot. */ - If (LEqual (Arg2, 4)) - { - Return (2) - } - - /* Operation response: no operation executed. */ - If (LEqual (Arg2, 5)) - { - Return (Package (3) { 0, 0, 0 }) - } - - /* Set preffered user language: deprecated and must return 3 aka "not implemented". */ - If (LEqual (Arg2, 6)) - { - Return (3) - } - - /* Submit operations: deny. */ - If (LEqual (Arg2, 7)) - { - Return (3) - } - - /* All actions are forbidden. */ - If (LEqual (Arg2, 8)) - { - Return (1) - } - - Return (1) - } - - /* Memory clearing on boot: just a dummy. */ - If (LEqual (Arg0, ToUUID("376054ed-cc13-4675-901c-4756d7f2d45d"))) - { - If (LEqual (Arg2, 0)) - { - /* Function 1. */ - Return (Buffer (1) { 3 }) - } - - /* Just return success. */ - If (LEqual (Arg2, 1)) - { - Return (0) - } - - Return (1) - } - - Return (Buffer (1) { 0 }) - } -} diff --git a/src/drivers/pc80/tpm/chip.h b/src/drivers/pc80/tpm/chip.h deleted file mode 100644 index 1a63b98..0000000 --- a/src/drivers/pc80/tpm/chip.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 Google Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#ifndef DRIVERS_PC80_TPM_CHIP_H -#define DRIVERS_PC80_TPM_CHIP_H - -typedef struct drivers_pc80_tpm_config { - /* - * TPM Interrupt polarity: - * - * High Level 0 - * Low Level 1 - * Rising Edge 2 - * Falling Edge 3 - */ - u8 irq_polarity; -} tpm_config_t; - -#endif /* DRIVERS_PC80_TPM_CHIP_H */ diff --git a/src/drivers/pc80/tpm/romstage.c b/src/drivers/pc80/tpm/romstage.c deleted file mode 100644 index 96760e2..0000000 --- a/src/drivers/pc80/tpm/romstage.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <types.h> -#include <console/cbmem_console.h> -#include <console/console.h> -#include <arch/acpi.h> -#include <tpm.h> -#include <reset.h> - -//#define EXTRA_LOGGING - -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ - -#define TPM_SUCCESS ((u32)0x00000000) - -#define TPM_E_IOERROR ((u32)0x0000001f) -#define TPM_E_COMMUNICATION_ERROR ((u32)0x00005004) -#define TPM_E_NON_FATAL ((u32)0x00000800) -#define TPM_E_INVALID_POSTINIT ((u32)0x00000026) - -#define TPM_E_NEEDS_SELFTEST ((u32)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((u32)(TPM_E_NON_FATAL + 2)) - -static const struct { - u8 buffer[12]; -} tpm_resume_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2 } -}; - -static const struct { - u8 buffer[12]; -} tpm_startup_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1 } -}; - -static const struct { - u8 buffer[12]; -} tpm_deactivate_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x3 } -}; - -static const struct { - u8 buffer[10]; -} tpm_continueselftest_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53 } -}; - -static inline void FromTpmUint32(const u8 * buffer, u32 * x) -{ - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | (buffer[2] << 8) | buffer[3]); -} - -static inline int TpmCommandSize(const u8 * buffer) -{ - u32 size; - FromTpmUint32(buffer + sizeof(u16), &size); - return (int)size; -} - -/* Gets the code field of a TPM command. */ -static inline int TpmCommandCode(const u8 * buffer) -{ - u32 code; - FromTpmUint32(buffer + sizeof(u16) + sizeof(u32), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int TpmReturnCode(const u8 * buffer) -{ - return TpmCommandCode(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static u32 TlclSendReceiveNoRetry(const u8 * request, - u8 * response, int max_length) -{ - size_t response_length = max_length; - u32 result; - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: command: %x%x %x%x%x%x %x%x%x%x\n", - request[0], request[1], - request[2], request[3], request[4], request[5], - request[6], request[7], request[8], request[9]); -#endif - - result = TPM_SUCCESS; - if (tis_sendrecv - (request, TpmCommandSize(request), response, &response_length)) - result = TPM_E_IOERROR; - - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - printk(BIOS_DEBUG, - "TPM: command 0x%x send/receive failed: 0x%x\n", - TpmCommandCode(request), result); - return TPM_E_COMMUNICATION_ERROR; - } - /* Otherwise, use the result code from the response */ - result = TpmReturnCode(response); - -/* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: response: %x%x %x%x%x%x %x%x%x%x\n", - response[0], response[1], - response[2], response[3], response[4], response[5], - response[6], response[7], response[8], response[9]); -#endif - - printk(BIOS_DEBUG, "TPM: command 0x%x returned 0x%x\n", - TpmCommandCode(request), result); - - return result; -} - -static inline u32 TlclContinueSelfTest(void) -{ - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - printk(BIOS_DEBUG, "TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return TlclSendReceiveNoRetry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. In the firmware, waits for the self test to complete - * if needed. In the host, reports the first error without retries. */ -static u32 TlclSendReceive(const u8 * request, u8 * response, int max_length) -{ - u32 result = TlclSendReceiveNoRetry(request, response, max_length); - /* When compiling for the firmware, hide command failures due to the self - * test not having run or completed. */ - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = TlclContinueSelfTest(); - if (result != TPM_SUCCESS) { - return result; - } -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = TlclSendReceiveNoRetry(request, response, max_length); -#else - /* This needs serious testing. The TPM specification says: - * "iii. The caller MUST wait for the actions of - * TPM_ContinueSelfTest to complete before reissuing the - * command C1." But, if ContinueSelfTest is non-blocking, how - * do we know that the actions have completed other than trying - * again? */ - do { - result = - TlclSendReceiveNoRetry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - - return result; -} - -void init_tpm(int s3resume) -{ - u32 result; - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - - if (CONFIG_TPM_DEACTIVATE) { - printk(BIOS_SPEW, "TPM: Deactivate\n"); - result = TlclSendReceive(tpm_deactivate_cmd.buffer, - response, sizeof(response)); - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - return; - } - - /* Doing TPM startup when we're not coming in on the S3 resume path - * saves us roughly 20ms in boot time only. This does not seem to - * be worth an API change to vboot_reference-firmware right now, so - * let's keep the code around, but just bail out early: - */ - if (s3resume ? CONFIG_NO_TPM_RESUME - : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) - return; - - printk(BIOS_DEBUG, "TPM initialization.\n"); - - printk(BIOS_SPEW, "TPM: Init\n"); - if (tis_init()) - return; - - printk(BIOS_SPEW, "TPM: Open\n"); - if (tis_open()) - return; - - - if (s3resume) { - /* S3 Resume */ - printk(BIOS_SPEW, "TPM: Resume\n"); - result = TlclSendReceive(tpm_resume_cmd.buffer, - response, sizeof(response)); - if (result == TPM_E_INVALID_POSTINIT) { - /* We're on a platform where the TPM maintains power - * in S3, so it's already initialized. - */ - printk(BIOS_DEBUG, "TPM: Already initialized.\n"); - return; - } - } else { - printk(BIOS_SPEW, "TPM: Startup\n"); - result = TlclSendReceive(tpm_startup_cmd.buffer, - response, sizeof(response)); - } - - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - - if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { - printk(BIOS_ERR, "Hard reset!\n"); - post_code(POST_TPM_FAILURE); - if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) - cbmem_dump_console(); - hard_reset(); - } -} diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c deleted file mode 100644 index ba2561d..0000000 --- a/src/drivers/pc80/tpm/tpm.c +++ /dev/null @@ -1,778 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -/* - * The code in this file has been heavily based on the article "Writing a TPM - * Device Driver" published on http://ptgmedia.pearsoncmg.com and the - * submission by Stefan Berger on Qemu-devel mailing list. - * - * One principal difference is that in the simplest config the other than 0 - * TPM localities do not get mapped by some devices (for instance, by - * Infineon slb9635), so this driver provides access to locality 0 only. - */ - -#include <stdlib.h> -#include <string.h> -#include <delay.h> -#include <arch/io.h> -#include <console/console.h> -#include <tpm.h> -#include <arch/early_variables.h> -#include <device/pnp.h> -#include "chip.h" - -#define PREFIX "lpc_tpm: " - -/* coreboot wrapper for TPM driver (start) */ -#define TPM_DEBUG(fmt, args...) \ - if (CONFIG_DEBUG_TPM) { \ - printk(BIOS_DEBUG, PREFIX); \ - printk(BIOS_DEBUG, fmt , ##args); \ - } -#define TPM_DEBUG_IO_READ(reg_, val_) \ - TPM_DEBUG("Read reg 0x%x returns 0x%x\n", (reg_), (val_)) -#define TPM_DEBUG_IO_WRITE(reg_, val_) \ - TPM_DEBUG("Write reg 0x%x with 0x%x\n", (reg_), (val_)) -#define printf(x...) printk(BIOS_ERR, x) - -/* coreboot wrapper for TPM driver (end) */ - -#ifndef CONFIG_TPM_TIS_BASE_ADDRESS -/* Base TPM address standard for x86 systems */ -#define CONFIG_TPM_TIS_BASE_ADDRESS 0xfed40000 -#endif - -/* the macro accepts the locality value, but only locality 0 is operational */ -#define TIS_REG(LOCALITY, REG) \ - (void *)(CONFIG_TPM_TIS_BASE_ADDRESS + (LOCALITY << 12) + REG) - -/* hardware registers' offsets */ -#define TIS_REG_ACCESS 0x0 -#define TIS_REG_INT_ENABLE 0x8 -#define TIS_REG_INT_VECTOR 0xc -#define TIS_REG_INT_STATUS 0x10 -#define TIS_REG_INTF_CAPABILITY 0x14 -#define TIS_REG_STS 0x18 -#define TIS_REG_BURST_COUNT 0x19 -#define TIS_REG_DATA_FIFO 0x24 -#define TIS_REG_DID_VID 0xf00 -#define TIS_REG_RID 0xf04 - -/* Some registers' bit field definitions */ -#define TIS_STS_VALID (1 << 7) /* 0x80 */ -#define TIS_STS_COMMAND_READY (1 << 6) /* 0x40 */ -#define TIS_STS_TPM_GO (1 << 5) /* 0x20 */ -#define TIS_STS_DATA_AVAILABLE (1 << 4) /* 0x10 */ -#define TIS_STS_EXPECT (1 << 3) /* 0x08 */ -#define TIS_STS_RESPONSE_RETRY (1 << 1) /* 0x02 */ - -#define TIS_ACCESS_TPM_REG_VALID_STS (1 << 7) /* 0x80 */ -#define TIS_ACCESS_ACTIVE_LOCALITY (1 << 5) /* 0x20 */ -#define TIS_ACCESS_BEEN_SEIZED (1 << 4) /* 0x10 */ -#define TIS_ACCESS_SEIZE (1 << 3) /* 0x08 */ -#define TIS_ACCESS_PENDING_REQUEST (1 << 2) /* 0x04 */ -#define TIS_ACCESS_REQUEST_USE (1 << 1) /* 0x02 */ -#define TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0) /* 0x01 */ - -/* - * Error value returned if a tpm register does not enter the expected state - * after continuous polling. No actual TPM register reading ever returns ~0, - * so this value is a safe error indication to be mixed with possible status - * register values. - */ -#define TPM_TIMEOUT_ERR (~0) - -/* Error value returned on various TPM driver errors */ -#define TPM_DRIVER_ERR (~0) - - /* 1 second is plenty for anything TPM does.*/ -#define MAX_DELAY_US (1000 * 1000) - -/* - * Structures defined below allow creating descriptions of TPM vendor/device - * ID information for run time discovery. The only device the system knows - * about at this time is Infineon slb9635 - */ -struct device_name { - u16 dev_id; - const char * const dev_name; -}; - -struct vendor_name { - u16 vendor_id; - const char * vendor_name; - const struct device_name* dev_names; -}; - -static const struct device_name atmel_devices[] = { - {0x3204, "AT97SC3204"}, - {0xffff} -}; - -static const struct device_name infineon_devices[] = { - {0x000b, "SLB9635 TT 1.2"}, - {0x001a, "SLB9660 TT 1.2"}, - {0x001b, "SLB9670 TT 1.2"}, - {0xffff} -}; - -static const struct device_name nuvoton_devices[] = { - {0x00fe, "NPCT420AA V2"}, - {0xffff} -}; - -static const struct device_name stmicro_devices[] = { - {0x0000, "ST33ZP24" }, - {0xffff} -}; - -static const struct vendor_name vendor_names[] = { - {0x1114, "Atmel", atmel_devices}, - {0x15d1, "Infineon", infineon_devices}, - {0x1050, "Nuvoton", nuvoton_devices}, - {0x104a, "ST Microelectronics", stmicro_devices}, -}; - -/* - * Cached vendor/device ID pair to indicate that the device has been already - * discovered - */ -static u32 vendor_dev_id CAR_GLOBAL; - -static inline u8 tpm_read_status(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_STS)); - TPM_DEBUG_IO_READ(TIS_REG_STS, value); - return value; -} - -static inline void tpm_write_status(u8 sts, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_STS, sts); - write8(TIS_REG(locality, TIS_REG_STS), sts); -} - -static inline u8 tpm_read_data(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_DATA_FIFO)); - TPM_DEBUG_IO_READ(TIS_REG_DATA_FIFO, value); - return value; -} - -static inline void tpm_write_data(u8 data, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_STS, data); - write8(TIS_REG(locality, TIS_REG_DATA_FIFO), data); -} - -static inline u16 tpm_read_burst_count(int locality) -{ - u16 count; - count = read8(TIS_REG(locality, TIS_REG_BURST_COUNT)); - count |= read8(TIS_REG(locality, TIS_REG_BURST_COUNT + 1)) << 8; - TPM_DEBUG_IO_READ(TIS_REG_BURST_COUNT, count); - return count; -} - -static inline u8 tpm_read_access(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_ACCESS)); - TPM_DEBUG_IO_READ(TIS_REG_ACCESS, value); - return value; -} - -static inline void tpm_write_access(u8 data, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_ACCESS, data); - write8(TIS_REG(locality, TIS_REG_ACCESS), data); -} - -static inline u32 tpm_read_did_vid(int locality) -{ - u32 value = read32(TIS_REG(locality, TIS_REG_DID_VID)); - TPM_DEBUG_IO_READ(TIS_REG_DID_VID, value); - return value; -} - -static inline void tpm_write_int_vector(int vector, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_INT_VECTOR, vector); - write8(TIS_REG(locality, TIS_REG_INT_VECTOR), vector & 0xf); -} - -static inline void tpm_write_int_polarity(int polarity, int locality) -{ - /* Set polarity and leave all other bits at 0 */ - u32 value = (polarity & 0x3) << 3; - TPM_DEBUG_IO_WRITE(TIS_REG_INT_ENABLE, value); - write32(TIS_REG(locality, TIS_REG_INT_ENABLE), value); -} - -/* - * tis_wait_sts() - * - * Wait for at least a second for a status to change its state to match the - * expected state. Normally the transition happens within microseconds. - * - * @locality - locality - * @mask - bitmask for the bitfield(s) to watch - * @expected - value the field(s) are supposed to be set to - * - * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. - */ -static int tis_wait_sts(int locality, u8 mask, u8 expected) -{ - u32 time_us = MAX_DELAY_US; - while (time_us > 0) { - u8 value = tpm_read_status(locality); - if ((value & mask) == expected) - return 0; - udelay(1); /* 1 us */ - time_us--; - } - return TPM_TIMEOUT_ERR; -} - -static inline int tis_wait_ready(int locality) -{ - return tis_wait_sts(locality, TIS_STS_COMMAND_READY, - TIS_STS_COMMAND_READY); -} - -static inline int tis_wait_valid(int locality) -{ - return tis_wait_sts(locality, TIS_STS_VALID, TIS_STS_VALID); -} - -static inline int tis_wait_valid_data(int locality) -{ - const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; - return tis_wait_sts(locality, has_data, has_data); -} - -static inline int tis_has_valid_data(int locality) -{ - const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; - return (tpm_read_status(locality) & has_data) == has_data; -} - -static inline int tis_expect_data(int locality) -{ - return !!(tpm_read_status(locality) & TIS_STS_EXPECT); -} - -/* - * tis_wait_access() - * - * Wait for at least a second for a access to change its state to match the - * expected state. Normally the transition happens within microseconds. - * - * @locality - locality - * @mask - bitmask for the bitfield(s) to watch - * @expected - value the field(s) are supposed to be set to - * - * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. - */ -static int tis_wait_access(int locality, u8 mask, u8 expected) -{ - u32 time_us = MAX_DELAY_US; - while (time_us > 0) { - u8 value = tpm_read_access(locality); - if ((value & mask) == expected) - return 0; - udelay(1); /* 1 us */ - time_us--; - } - return TPM_TIMEOUT_ERR; -} - -static inline int tis_wait_dropped_access(int locality) -{ - return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, 0); -} - -static inline int tis_wait_received_access(int locality) -{ - return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, - TIS_ACCESS_ACTIVE_LOCALITY); -} - -static inline int tis_has_access(int locality) -{ - return !!(tpm_read_access(locality) & TIS_ACCESS_ACTIVE_LOCALITY); -} - -static inline void tis_request_access(int locality) -{ - tpm_write_access(TIS_ACCESS_REQUEST_USE, locality); -} - -static inline void tis_drop_access(int locality) -{ - tpm_write_access(TIS_ACCESS_ACTIVE_LOCALITY, locality); -} - -/* - * PC Client Specific TPM Interface Specification section 11.2.12: - * - * Software must be prepared to send two writes of a "1" to command ready - * field: the first to indicate successful read of all the data, thus - * clearing the data from the ReadFIFO and freeing the TPM's resources, - * and the second to indicate to the TPM it is about to send a new command. - * - * In practice not all TPMs behave the same so it is necessary to be - * flexible when trying to set command ready. - * - * Returns 0 on success if the TPM is ready for transactions. - * Returns TPM_TIMEOUT_ERR if the command ready bit does not get set. - */ -static int tis_command_ready(u8 locality) -{ - u32 status; - - /* 1st attempt to set command ready */ - tpm_write_status(TIS_STS_COMMAND_READY, locality); - - /* Wait for response */ - status = tpm_read_status(locality); - - /* Check if command ready is set yet */ - if (status & TIS_STS_COMMAND_READY) - return 0; - - /* 2nd attempt to set command ready */ - tpm_write_status(TIS_STS_COMMAND_READY, locality); - - return tis_wait_ready(locality); -} - -/* - * Probe the TPM device and try determining its manufacturer/device name. - * - * Returns 0 on success (the device is found or was found during an earlier - * invocation) or TPM_DRIVER_ERR if the device is not found. - */ -static u32 tis_probe(void) -{ - const char *device_name = "unknown"; - const char *vendor_name = device_name; - const struct device_name *dev; - u32 didvid; - u16 vid, did; - int i; - - if (car_get_var(vendor_dev_id)) - return 0; /* Already probed. */ - - didvid = tpm_read_did_vid(0); - if (!didvid || (didvid == 0xffffffff)) { - printf("%s: No TPM device found\n", __FUNCTION__); - return TPM_DRIVER_ERR; - } - - car_set_var(vendor_dev_id, didvid); - - vid = didvid & 0xffff; - did = (didvid >> 16) & 0xffff; - for (i = 0; i < ARRAY_SIZE(vendor_names); i++) { - int j = 0; - u16 known_did; - if (vid == vendor_names[i].vendor_id) { - vendor_name = vendor_names[i].vendor_name; - } else { - continue; - } - dev = &vendor_names[i].dev_names[j]; - while ((known_did = dev->dev_id) != 0xffff) { - if (known_did == did) { - device_name = dev->dev_name; - break; - } - j++; - dev = &vendor_names[i].dev_names[j]; - } - break; - } - /* this will have to be converted into debug printout */ - printf("Found TPM %s by %s\n", device_name, vendor_name); - return 0; -} - -/* - * tis_senddata() - * - * send the passed in data to the TPM device. - * - * @data - address of the data to send, byte by byte - * @len - length of the data to send - * - * Returns 0 on success, TPM_DRIVER_ERR on error (in case the device does - * not accept the entire command). - */ -static u32 tis_senddata(const u8 * const data, u32 len) -{ - u32 offset = 0; - u16 burst = 0; - u32 max_cycles = 0; - u8 locality = 0; - - if (tis_wait_ready(locality)) { - printf("%s:%d - failed to get 'command_ready' status\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - burst = tpm_read_burst_count(locality); - - while (1) { - unsigned count; - - /* Wait till the device is ready to accept more data. */ - while (!burst) { - if (max_cycles++ == MAX_DELAY_US) { - printf("%s:%d failed to feed %d bytes of %d\n", - __FILE__, __LINE__, len - offset, len); - return TPM_DRIVER_ERR; - } - udelay(1); - burst = tpm_read_burst_count(locality); - } - - max_cycles = 0; - - /* - * Calculate number of bytes the TPM is ready to accept in one - * shot. - * - * We want to send the last byte outside of the loop (hence - * the -1 below) to make sure that the 'expected' status bit - * changes to zero exactly after the last byte is fed into the - * FIFO. - */ - count = min(burst, len - offset - 1); - while (count--) - tpm_write_data(data[offset++], locality); - - if (tis_wait_valid(locality) || !tis_expect_data(locality)) { - printf("%s:%d TPM command feed overflow\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - burst = tpm_read_burst_count(locality); - if ((offset == (len - 1)) && burst) - /* - * We need to be able to send the last byte to the - * device, so burst size must be nonzero before we - * break out. - */ - break; - } - - /* Send the last byte. */ - tpm_write_data(data[offset++], locality); - - /* - * Verify that TPM does not expect any more data as part of this - * command. - */ - if (tis_wait_valid(locality) || tis_expect_data(locality)) { - printf("%s:%d unexpected TPM status 0x%x\n", - __FILE__, __LINE__, tpm_read_status(locality)); - return TPM_DRIVER_ERR; - } - - /* OK, sitting pretty, let's start the command execution. */ - tpm_write_status(TIS_STS_TPM_GO, locality); - - return 0; -} - -/* - * tis_readresponse() - * - * read the TPM device response after a command was issued. - * - * @buffer - address where to read the response, byte by byte. - * @len - pointer to the size of buffer - * - * On success stores the number of received bytes to len and returns 0. On - * errors (misformatted TPM data or synchronization problems) returns - * TPM_DRIVER_ERR. - */ -static u32 tis_readresponse(u8 *buffer, size_t *len) -{ - u16 burst_count; - u32 offset = 0; - u8 locality = 0; - u32 expected_count = *len; - int max_cycles = 0; - - /* Wait for the TPM to process the command */ - if (tis_wait_valid_data(locality)) { - printf("%s:%d failed processing command\n", __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - do { - while ((burst_count = tpm_read_burst_count(locality)) == 0) { - if (max_cycles++ == MAX_DELAY_US) { - printf("%s:%d TPM stuck on read\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - udelay(1); - } - - max_cycles = 0; - - while (burst_count-- && (offset < expected_count)) { - buffer[offset++] = tpm_read_data(locality); - if (offset == 6) { - /* - * We got the first six bytes of the reply, - * let's figure out how many bytes to expect - * total - it is stored as a 4 byte number in - * network order, starting with offset 2 into - * the body of the reply. - */ - u32 real_length; - memcpy(&real_length, - buffer + 2, - sizeof(real_length)); - expected_count = be32_to_cpu(real_length); - - if ((expected_count < offset) || - (expected_count > *len)) { - printf("%s:%d bad response size %d\n", - __FILE__, __LINE__, - expected_count); - return TPM_DRIVER_ERR; - } - } - } - - /* Wait for the next portion */ - if (tis_wait_valid(locality)) { - printf("%s:%d failed to read response\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - if (offset == expected_count) - break; /* We got all we need */ - - } while (tis_has_valid_data(locality)); - - /* * Make sure we indeed read all there was. */ - if (tis_has_valid_data(locality)) { - printf("%s:%d wrong receive status: %x %d bytes left\n", - __FILE__, __LINE__, tpm_read_status(locality), - tpm_read_burst_count(locality)); - return TPM_DRIVER_ERR; - } - - /* Tell the TPM that we are done. */ - if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) - return TPM_DRIVER_ERR; - - *len = offset; - return 0; -} - -/* - * tis_init() - * - * Initialize the TPM device. Returns 0 on success or TPM_DRIVER_ERR on - * failure (in case device probing did not succeed). - */ -int tis_init(void) -{ - if (tis_probe()) - return TPM_DRIVER_ERR; - return 0; -} - -/* - * tis_open() - * - * Requests access to locality 0 for the caller. After all commands have been - * completed the caller is supposed to call tis_close(). - * - * Returns 0 on success, TPM_DRIVER_ERR on failure. - */ -int tis_open(void) -{ - u8 locality = 0; /* we use locality zero for everything */ - - if (tis_close()) - return TPM_DRIVER_ERR; - - /* now request access to locality */ - tis_request_access(locality); - - /* did we get a lock? */ - if (tis_wait_received_access(locality)) { - printf("%s:%d - failed to lock locality %d\n", - __FILE__, __LINE__, locality); - return TPM_DRIVER_ERR; - } - - /* Certain TPMs seem to need some delay here or they hang... */ - udelay(10); - - if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) - return TPM_DRIVER_ERR; - - return 0; -} - -/* - * tis_close() - * - * terminate the current session with the TPM by releasing the locked - * locality. Returns 0 on success of TPM_DRIVER_ERR on failure (in case lock - * removal did not succeed). - */ -int tis_close(void) -{ - u8 locality = 0; - if (tis_has_access(locality)) { - tis_drop_access(locality); - if (tis_wait_dropped_access(locality)) { - printf("%s:%d - failed to release locality %d\n", - __FILE__, __LINE__, locality); - return TPM_DRIVER_ERR; - } - } - return 0; -} - -/* - * tis_sendrecv() - * - * Send the requested data to the TPM and then try to get its response - * - * @sendbuf - buffer of the data to send - * @send_size size of the data to send - * @recvbuf - memory to save the response to - * @recv_len - pointer to the size of the response buffer - * - * Returns 0 on success (and places the number of response bytes at recv_len) - * or TPM_DRIVER_ERR on failure. - */ -int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, - uint8_t *recvbuf, size_t *recv_len) -{ - if (tis_senddata(sendbuf, send_size)) { - printf("%s:%d failed sending data to TPM\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - return tis_readresponse(recvbuf, recv_len); -} - -#ifdef __RAMSTAGE__ - -/* - * tis_setup_interrupt() - * - * Set up the interrupt vector and polarity for locality 0 and - * disable all interrupts so they are unused in firmware but can - * be enabled by the OS. - * - * The values used here must match what is passed in the TPM ACPI - * device if ACPI is used on the platform. - * - * @vector - TPM interrupt vector - * @polarity - TPM interrupt polarity - * - * Returns 0 on success, TPM_DRIVER_ERR on failure. - */ -static int tis_setup_interrupt(int vector, int polarity) -{ - u8 locality = 0; - int has_access = tis_has_access(locality); - - /* Open connection and request access if not already granted */ - if (!has_access && tis_open() < 0) - return TPM_DRIVER_ERR; - - /* Set TPM interrupt vector */ - tpm_write_int_vector(vector, locality); - - /* Set TPM interupt polarity and disable interrupts */ - tpm_write_int_polarity(polarity, locality); - - /* Close connection if it was opened */ - if (!has_access && tis_close() < 0) - return TPM_DRIVER_ERR; - - return 0; -} - -static void lpc_tpm_read_resources(struct device *dev) -{ - /* Static 5K memory region specified in Kconfig */ - mmio_resource(dev, 0, CONFIG_TPM_TIS_BASE_ADDRESS >> 10, 0x5000 >> 10); -} - -static void lpc_tpm_set_resources(struct device *dev) -{ - tpm_config_t *config = (tpm_config_t *)dev->chip_info; - struct resource *res; - - for (res = dev->resource_list; res; res = res->next) { - if (!(res->flags & IORESOURCE_ASSIGNED)) - continue; - - if (res->flags & IORESOURCE_IRQ) { - /* Set interrupt vector */ - tis_setup_interrupt((int)res->base, - config->irq_polarity); - } else { - continue; - } - - res->flags |= IORESOURCE_STORED; - report_resource_stored(dev, res, " <tpm>"); - } -} - -static struct device_operations lpc_tpm_ops = { - .read_resources = &lpc_tpm_read_resources, - .set_resources = &lpc_tpm_set_resources, -}; - -static struct pnp_info pnp_dev_info[] = { - { .flags = PNP_IRQ0 } -}; - -static void enable_dev(struct device *dev) -{ - pnp_enable_devices(dev, &lpc_tpm_ops, - ARRAY_SIZE(pnp_dev_info), pnp_dev_info); -} - -struct chip_operations drivers_pc80_tpm_ops = { - CHIP_NAME("LPC TPM") - .enable_dev = enable_dev -}; - -#endif /* __RAMSTAGE__ */ diff --git a/src/drivers/tpm/Kconfig b/src/drivers/tpm/Kconfig new file mode 100644 index 0000000..f6a7948 --- /dev/null +++ b/src/drivers/tpm/Kconfig @@ -0,0 +1,46 @@ +config MAINBOARD_HAS_LPC_TPM + bool + default n + help + Board has TPM support + +config LPC_TPM + bool "Enable TPM support" + depends on MAINBOARD_HAS_LPC_TPM + default n + help + Enable this option to enable LPC TPM support in coreboot. + + If unsure, say N. + +config TPM_TIS_BASE_ADDRESS + hex + default 0xfed40000 + depends on LPC_TPM + help + This can be used to adjust the TPM memory base address. + The default is specified by the TCG PC Client Specific TPM + Interface Specification 1.2 and should not be changed unless + the TPM being used does not conform to TPM TIS 1.2. + +config TPM_INIT_FAILURE_IS_FATAL + bool + default n + depends on LPC_TPM + help + What to do if TPM init failed. If true, force a hard reset, + otherwise just log error message to console. + +config SKIP_TPM_STARTUP_ON_NORMAL_BOOT + bool + default n + depends on LPC_TPM + help + Skip TPM init on normal boot. Useful if payload does TPM init. + +config TPM_DEACTIVATE + bool "Deactivate TPM" + default n + depends on LPC_TPM + help + Deactivate TPM by issuing deactivate command. diff --git a/src/drivers/tpm/Makefile.inc b/src/drivers/tpm/Makefile.inc new file mode 100644 index 0000000..c900fe8 --- /dev/null +++ b/src/drivers/tpm/Makefile.inc @@ -0,0 +1,2 @@ +romstage-$(CONFIG_LPC_TPM) += tpm.c +ramstage-$(CONFIG_LPC_TPM) += tpm.c diff --git a/src/drivers/tpm/acpi/tpm.asl b/src/drivers/tpm/acpi/tpm.asl new file mode 100644 index 0000000..ece63e2 --- /dev/null +++ b/src/drivers/tpm/acpi/tpm.asl @@ -0,0 +1,196 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +/* Trusted Platform Module */ + +Device (TPM) +{ + Name (_HID, EISAID ("PNP0C31")) + Name (_CID, 0x310cd041) + Name (_UID, 1) + + Method (_STA, 0) + { +#if CONFIG_LPC_TPM && !CONFIG_TPM_DEACTIVATE + Return (0xf) +#else + Return (0x0) +#endif + } + + Name (IBUF, ResourceTemplate () + { + /* Updated based on TPM interrupt for Locality 0 */ + Interrupt (ResourceConsumer, Edge, ActiveHigh, + Exclusive, , , TIRQ) { 0 } + }) + + Name (RBUF, ResourceTemplate () + { + IO (Decode16, 0x2e, 0x2e, 0x01, 0x02) + Memory32Fixed (ReadWrite, CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) + }) + + Method (_CRS, 0, NotSerialized) + { + OperationRegion (TREG, SystemMemory, + CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) + Field (TREG, ByteAcc, NoLock, Preserve) + { + /* TPM_INT_ENABLE_0 */ + Offset (0x0008), + , 3, + ITPL, 2, /* Interrupt type and polarity */ + + /* TPM_INT_VECTOR_0 */ + Offset (0x000C), + IVEC, 4, /* SERIRQ vector */ + } + + If (LGreater (IVEC, 0)) { + /* Update interrupt vector */ + CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) + Store (IVEC, TVEC) + + /* Update interrupt type and polarity */ + CreateBitField (^IBUF, ^TIRQ._HE, TTYP) + CreateBitField (^IBUF, ^TIRQ._LL, TPOL) + CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) + + If (LEqual (ITPL, 0x0)) { + /* Active-High Level-Triggered Shared */ + Store (Zero, TPOL) + Store (Zero, TTYP) + Store (One, TSHR) + } ElseIf (LEqual (ITPL, 0x1)) { + /* Active-Low Level-Triggered Shared */ + Store (One, TPOL) + Store (Zero, TTYP) + Store (One, TSHR) + } ElseIf (LEqual (ITPL, 0x2)) { + /* Active-High Edge-Triggered Exclusive */ + Store (Zero, TPOL) + Store (One, TTYP) + Store (Zero, TSHR) + } ElseIf (LEqual (ITPL, 0x3)) { + /* Active-Low Edge-Triggered Exclusive */ + Store (One, TPOL) + Store (One, TTYP) + Store (Zero, TSHR) + } + + /* Merge IRQ with base address */ + Return (ConcatenateResTemplate (RBUF, IBUF)) + } Else { + Return (RBUF) + } + } + + /* Dummy _DSM to make Bitlocker work. */ + Method (_DSM, 4, Serialized) + { + /* Physical presence interface. + This is used to submit commands like "Clear TPM" to + be run at next reboot provided that user confirms them. + Spec allows user to cancel all commands and/or + configure BIOS to reject commands. So we pretend that + user did just this: cancelled everything. If user + really wants to clear TPM the only option now is to do it manually + in payload. + */ + If (LEqual (Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653"))) + { + If (LEqual (Arg2, 0)) + { + /* Functions 1-8. */ + Return (Buffer (2) { 0xFF, 0x01 }) + } + + /* Interface version: 1.2 */ + If (LEqual (Arg2, 1)) + { + Return ("1.2") + } + + /* Submit operations: drop on the floor and return success. */ + If (LEqual (Arg2, 2)) + { + Return (0x00) + } + + /* Pending operation: none. */ + If (LEqual (Arg2, 3)) + { + Return (Package (2) { 0, 0 }) + } + + /* Pre-OS transition method: reboot. */ + If (LEqual (Arg2, 4)) + { + Return (2) + } + + /* Operation response: no operation executed. */ + If (LEqual (Arg2, 5)) + { + Return (Package (3) { 0, 0, 0 }) + } + + /* Set preffered user language: deprecated and must return 3 aka "not implemented". */ + If (LEqual (Arg2, 6)) + { + Return (3) + } + + /* Submit operations: deny. */ + If (LEqual (Arg2, 7)) + { + Return (3) + } + + /* All actions are forbidden. */ + If (LEqual (Arg2, 8)) + { + Return (1) + } + + Return (1) + } + + /* Memory clearing on boot: just a dummy. */ + If (LEqual (Arg0, ToUUID("376054ed-cc13-4675-901c-4756d7f2d45d"))) + { + If (LEqual (Arg2, 0)) + { + /* Function 1. */ + Return (Buffer (1) { 3 }) + } + + /* Just return success. */ + If (LEqual (Arg2, 1)) + { + Return (0) + } + + Return (1) + } + + Return (Buffer (1) { 0 }) + } +} diff --git a/src/drivers/tpm/chip.h b/src/drivers/tpm/chip.h new file mode 100644 index 0000000..1a63b98 --- /dev/null +++ b/src/drivers/tpm/chip.h @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef DRIVERS_PC80_TPM_CHIP_H +#define DRIVERS_PC80_TPM_CHIP_H + +typedef struct drivers_pc80_tpm_config { + /* + * TPM Interrupt polarity: + * + * High Level 0 + * Low Level 1 + * Rising Edge 2 + * Falling Edge 3 + */ + u8 irq_polarity; +} tpm_config_t; + +#endif /* DRIVERS_PC80_TPM_CHIP_H */ diff --git a/src/drivers/tpm/tpm.c b/src/drivers/tpm/tpm.c new file mode 100644 index 0000000..ba2561d --- /dev/null +++ b/src/drivers/tpm/tpm.c @@ -0,0 +1,778 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +/* + * The code in this file has been heavily based on the article "Writing a TPM + * Device Driver" published on http://ptgmedia.pearsoncmg.com and the + * submission by Stefan Berger on Qemu-devel mailing list. + * + * One principal difference is that in the simplest config the other than 0 + * TPM localities do not get mapped by some devices (for instance, by + * Infineon slb9635), so this driver provides access to locality 0 only. + */ + +#include <stdlib.h> +#include <string.h> +#include <delay.h> +#include <arch/io.h> +#include <console/console.h> +#include <tpm.h> +#include <arch/early_variables.h> +#include <device/pnp.h> +#include "chip.h" + +#define PREFIX "lpc_tpm: " + +/* coreboot wrapper for TPM driver (start) */ +#define TPM_DEBUG(fmt, args...) \ + if (CONFIG_DEBUG_TPM) { \ + printk(BIOS_DEBUG, PREFIX); \ + printk(BIOS_DEBUG, fmt , ##args); \ + } +#define TPM_DEBUG_IO_READ(reg_, val_) \ + TPM_DEBUG("Read reg 0x%x returns 0x%x\n", (reg_), (val_)) +#define TPM_DEBUG_IO_WRITE(reg_, val_) \ + TPM_DEBUG("Write reg 0x%x with 0x%x\n", (reg_), (val_)) +#define printf(x...) printk(BIOS_ERR, x) + +/* coreboot wrapper for TPM driver (end) */ + +#ifndef CONFIG_TPM_TIS_BASE_ADDRESS +/* Base TPM address standard for x86 systems */ +#define CONFIG_TPM_TIS_BASE_ADDRESS 0xfed40000 +#endif + +/* the macro accepts the locality value, but only locality 0 is operational */ +#define TIS_REG(LOCALITY, REG) \ + (void *)(CONFIG_TPM_TIS_BASE_ADDRESS + (LOCALITY << 12) + REG) + +/* hardware registers' offsets */ +#define TIS_REG_ACCESS 0x0 +#define TIS_REG_INT_ENABLE 0x8 +#define TIS_REG_INT_VECTOR 0xc +#define TIS_REG_INT_STATUS 0x10 +#define TIS_REG_INTF_CAPABILITY 0x14 +#define TIS_REG_STS 0x18 +#define TIS_REG_BURST_COUNT 0x19 +#define TIS_REG_DATA_FIFO 0x24 +#define TIS_REG_DID_VID 0xf00 +#define TIS_REG_RID 0xf04 + +/* Some registers' bit field definitions */ +#define TIS_STS_VALID (1 << 7) /* 0x80 */ +#define TIS_STS_COMMAND_READY (1 << 6) /* 0x40 */ +#define TIS_STS_TPM_GO (1 << 5) /* 0x20 */ +#define TIS_STS_DATA_AVAILABLE (1 << 4) /* 0x10 */ +#define TIS_STS_EXPECT (1 << 3) /* 0x08 */ +#define TIS_STS_RESPONSE_RETRY (1 << 1) /* 0x02 */ + +#define TIS_ACCESS_TPM_REG_VALID_STS (1 << 7) /* 0x80 */ +#define TIS_ACCESS_ACTIVE_LOCALITY (1 << 5) /* 0x20 */ +#define TIS_ACCESS_BEEN_SEIZED (1 << 4) /* 0x10 */ +#define TIS_ACCESS_SEIZE (1 << 3) /* 0x08 */ +#define TIS_ACCESS_PENDING_REQUEST (1 << 2) /* 0x04 */ +#define TIS_ACCESS_REQUEST_USE (1 << 1) /* 0x02 */ +#define TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0) /* 0x01 */ + +/* + * Error value returned if a tpm register does not enter the expected state + * after continuous polling. No actual TPM register reading ever returns ~0, + * so this value is a safe error indication to be mixed with possible status + * register values. + */ +#define TPM_TIMEOUT_ERR (~0) + +/* Error value returned on various TPM driver errors */ +#define TPM_DRIVER_ERR (~0) + + /* 1 second is plenty for anything TPM does.*/ +#define MAX_DELAY_US (1000 * 1000) + +/* + * Structures defined below allow creating descriptions of TPM vendor/device + * ID information for run time discovery. The only device the system knows + * about at this time is Infineon slb9635 + */ +struct device_name { + u16 dev_id; + const char * const dev_name; +}; + +struct vendor_name { + u16 vendor_id; + const char * vendor_name; + const struct device_name* dev_names; +}; + +static const struct device_name atmel_devices[] = { + {0x3204, "AT97SC3204"}, + {0xffff} +}; + +static const struct device_name infineon_devices[] = { + {0x000b, "SLB9635 TT 1.2"}, + {0x001a, "SLB9660 TT 1.2"}, + {0x001b, "SLB9670 TT 1.2"}, + {0xffff} +}; + +static const struct device_name nuvoton_devices[] = { + {0x00fe, "NPCT420AA V2"}, + {0xffff} +}; + +static const struct device_name stmicro_devices[] = { + {0x0000, "ST33ZP24" }, + {0xffff} +}; + +static const struct vendor_name vendor_names[] = { + {0x1114, "Atmel", atmel_devices}, + {0x15d1, "Infineon", infineon_devices}, + {0x1050, "Nuvoton", nuvoton_devices}, + {0x104a, "ST Microelectronics", stmicro_devices}, +}; + +/* + * Cached vendor/device ID pair to indicate that the device has been already + * discovered + */ +static u32 vendor_dev_id CAR_GLOBAL; + +static inline u8 tpm_read_status(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_STS)); + TPM_DEBUG_IO_READ(TIS_REG_STS, value); + return value; +} + +static inline void tpm_write_status(u8 sts, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_STS, sts); + write8(TIS_REG(locality, TIS_REG_STS), sts); +} + +static inline u8 tpm_read_data(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_DATA_FIFO)); + TPM_DEBUG_IO_READ(TIS_REG_DATA_FIFO, value); + return value; +} + +static inline void tpm_write_data(u8 data, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_STS, data); + write8(TIS_REG(locality, TIS_REG_DATA_FIFO), data); +} + +static inline u16 tpm_read_burst_count(int locality) +{ + u16 count; + count = read8(TIS_REG(locality, TIS_REG_BURST_COUNT)); + count |= read8(TIS_REG(locality, TIS_REG_BURST_COUNT + 1)) << 8; + TPM_DEBUG_IO_READ(TIS_REG_BURST_COUNT, count); + return count; +} + +static inline u8 tpm_read_access(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_ACCESS)); + TPM_DEBUG_IO_READ(TIS_REG_ACCESS, value); + return value; +} + +static inline void tpm_write_access(u8 data, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_ACCESS, data); + write8(TIS_REG(locality, TIS_REG_ACCESS), data); +} + +static inline u32 tpm_read_did_vid(int locality) +{ + u32 value = read32(TIS_REG(locality, TIS_REG_DID_VID)); + TPM_DEBUG_IO_READ(TIS_REG_DID_VID, value); + return value; +} + +static inline void tpm_write_int_vector(int vector, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_INT_VECTOR, vector); + write8(TIS_REG(locality, TIS_REG_INT_VECTOR), vector & 0xf); +} + +static inline void tpm_write_int_polarity(int polarity, int locality) +{ + /* Set polarity and leave all other bits at 0 */ + u32 value = (polarity & 0x3) << 3; + TPM_DEBUG_IO_WRITE(TIS_REG_INT_ENABLE, value); + write32(TIS_REG(locality, TIS_REG_INT_ENABLE), value); +} + +/* + * tis_wait_sts() + * + * Wait for at least a second for a status to change its state to match the + * expected state. Normally the transition happens within microseconds. + * + * @locality - locality + * @mask - bitmask for the bitfield(s) to watch + * @expected - value the field(s) are supposed to be set to + * + * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. + */ +static int tis_wait_sts(int locality, u8 mask, u8 expected) +{ + u32 time_us = MAX_DELAY_US; + while (time_us > 0) { + u8 value = tpm_read_status(locality); + if ((value & mask) == expected) + return 0; + udelay(1); /* 1 us */ + time_us--; + } + return TPM_TIMEOUT_ERR; +} + +static inline int tis_wait_ready(int locality) +{ + return tis_wait_sts(locality, TIS_STS_COMMAND_READY, + TIS_STS_COMMAND_READY); +} + +static inline int tis_wait_valid(int locality) +{ + return tis_wait_sts(locality, TIS_STS_VALID, TIS_STS_VALID); +} + +static inline int tis_wait_valid_data(int locality) +{ + const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; + return tis_wait_sts(locality, has_data, has_data); +} + +static inline int tis_has_valid_data(int locality) +{ + const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; + return (tpm_read_status(locality) & has_data) == has_data; +} + +static inline int tis_expect_data(int locality) +{ + return !!(tpm_read_status(locality) & TIS_STS_EXPECT); +} + +/* + * tis_wait_access() + * + * Wait for at least a second for a access to change its state to match the + * expected state. Normally the transition happens within microseconds. + * + * @locality - locality + * @mask - bitmask for the bitfield(s) to watch + * @expected - value the field(s) are supposed to be set to + * + * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. + */ +static int tis_wait_access(int locality, u8 mask, u8 expected) +{ + u32 time_us = MAX_DELAY_US; + while (time_us > 0) { + u8 value = tpm_read_access(locality); + if ((value & mask) == expected) + return 0; + udelay(1); /* 1 us */ + time_us--; + } + return TPM_TIMEOUT_ERR; +} + +static inline int tis_wait_dropped_access(int locality) +{ + return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, 0); +} + +static inline int tis_wait_received_access(int locality) +{ + return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, + TIS_ACCESS_ACTIVE_LOCALITY); +} + +static inline int tis_has_access(int locality) +{ + return !!(tpm_read_access(locality) & TIS_ACCESS_ACTIVE_LOCALITY); +} + +static inline void tis_request_access(int locality) +{ + tpm_write_access(TIS_ACCESS_REQUEST_USE, locality); +} + +static inline void tis_drop_access(int locality) +{ + tpm_write_access(TIS_ACCESS_ACTIVE_LOCALITY, locality); +} + +/* + * PC Client Specific TPM Interface Specification section 11.2.12: + * + * Software must be prepared to send two writes of a "1" to command ready + * field: the first to indicate successful read of all the data, thus + * clearing the data from the ReadFIFO and freeing the TPM's resources, + * and the second to indicate to the TPM it is about to send a new command. + * + * In practice not all TPMs behave the same so it is necessary to be + * flexible when trying to set command ready. + * + * Returns 0 on success if the TPM is ready for transactions. + * Returns TPM_TIMEOUT_ERR if the command ready bit does not get set. + */ +static int tis_command_ready(u8 locality) +{ + u32 status; + + /* 1st attempt to set command ready */ + tpm_write_status(TIS_STS_COMMAND_READY, locality); + + /* Wait for response */ + status = tpm_read_status(locality); + + /* Check if command ready is set yet */ + if (status & TIS_STS_COMMAND_READY) + return 0; + + /* 2nd attempt to set command ready */ + tpm_write_status(TIS_STS_COMMAND_READY, locality); + + return tis_wait_ready(locality); +} + +/* + * Probe the TPM device and try determining its manufacturer/device name. + * + * Returns 0 on success (the device is found or was found during an earlier + * invocation) or TPM_DRIVER_ERR if the device is not found. + */ +static u32 tis_probe(void) +{ + const char *device_name = "unknown"; + const char *vendor_name = device_name; + const struct device_name *dev; + u32 didvid; + u16 vid, did; + int i; + + if (car_get_var(vendor_dev_id)) + return 0; /* Already probed. */ + + didvid = tpm_read_did_vid(0); + if (!didvid || (didvid == 0xffffffff)) { + printf("%s: No TPM device found\n", __FUNCTION__); + return TPM_DRIVER_ERR; + } + + car_set_var(vendor_dev_id, didvid); + + vid = didvid & 0xffff; + did = (didvid >> 16) & 0xffff; + for (i = 0; i < ARRAY_SIZE(vendor_names); i++) { + int j = 0; + u16 known_did; + if (vid == vendor_names[i].vendor_id) { + vendor_name = vendor_names[i].vendor_name; + } else { + continue; + } + dev = &vendor_names[i].dev_names[j]; + while ((known_did = dev->dev_id) != 0xffff) { + if (known_did == did) { + device_name = dev->dev_name; + break; + } + j++; + dev = &vendor_names[i].dev_names[j]; + } + break; + } + /* this will have to be converted into debug printout */ + printf("Found TPM %s by %s\n", device_name, vendor_name); + return 0; +} + +/* + * tis_senddata() + * + * send the passed in data to the TPM device. + * + * @data - address of the data to send, byte by byte + * @len - length of the data to send + * + * Returns 0 on success, TPM_DRIVER_ERR on error (in case the device does + * not accept the entire command). + */ +static u32 tis_senddata(const u8 * const data, u32 len) +{ + u32 offset = 0; + u16 burst = 0; + u32 max_cycles = 0; + u8 locality = 0; + + if (tis_wait_ready(locality)) { + printf("%s:%d - failed to get 'command_ready' status\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + burst = tpm_read_burst_count(locality); + + while (1) { + unsigned count; + + /* Wait till the device is ready to accept more data. */ + while (!burst) { + if (max_cycles++ == MAX_DELAY_US) { + printf("%s:%d failed to feed %d bytes of %d\n", + __FILE__, __LINE__, len - offset, len); + return TPM_DRIVER_ERR; + } + udelay(1); + burst = tpm_read_burst_count(locality); + } + + max_cycles = 0; + + /* + * Calculate number of bytes the TPM is ready to accept in one + * shot. + * + * We want to send the last byte outside of the loop (hence + * the -1 below) to make sure that the 'expected' status bit + * changes to zero exactly after the last byte is fed into the + * FIFO. + */ + count = min(burst, len - offset - 1); + while (count--) + tpm_write_data(data[offset++], locality); + + if (tis_wait_valid(locality) || !tis_expect_data(locality)) { + printf("%s:%d TPM command feed overflow\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + burst = tpm_read_burst_count(locality); + if ((offset == (len - 1)) && burst) + /* + * We need to be able to send the last byte to the + * device, so burst size must be nonzero before we + * break out. + */ + break; + } + + /* Send the last byte. */ + tpm_write_data(data[offset++], locality); + + /* + * Verify that TPM does not expect any more data as part of this + * command. + */ + if (tis_wait_valid(locality) || tis_expect_data(locality)) { + printf("%s:%d unexpected TPM status 0x%x\n", + __FILE__, __LINE__, tpm_read_status(locality)); + return TPM_DRIVER_ERR; + } + + /* OK, sitting pretty, let's start the command execution. */ + tpm_write_status(TIS_STS_TPM_GO, locality); + + return 0; +} + +/* + * tis_readresponse() + * + * read the TPM device response after a command was issued. + * + * @buffer - address where to read the response, byte by byte. + * @len - pointer to the size of buffer + * + * On success stores the number of received bytes to len and returns 0. On + * errors (misformatted TPM data or synchronization problems) returns + * TPM_DRIVER_ERR. + */ +static u32 tis_readresponse(u8 *buffer, size_t *len) +{ + u16 burst_count; + u32 offset = 0; + u8 locality = 0; + u32 expected_count = *len; + int max_cycles = 0; + + /* Wait for the TPM to process the command */ + if (tis_wait_valid_data(locality)) { + printf("%s:%d failed processing command\n", __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + do { + while ((burst_count = tpm_read_burst_count(locality)) == 0) { + if (max_cycles++ == MAX_DELAY_US) { + printf("%s:%d TPM stuck on read\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + udelay(1); + } + + max_cycles = 0; + + while (burst_count-- && (offset < expected_count)) { + buffer[offset++] = tpm_read_data(locality); + if (offset == 6) { + /* + * We got the first six bytes of the reply, + * let's figure out how many bytes to expect + * total - it is stored as a 4 byte number in + * network order, starting with offset 2 into + * the body of the reply. + */ + u32 real_length; + memcpy(&real_length, + buffer + 2, + sizeof(real_length)); + expected_count = be32_to_cpu(real_length); + + if ((expected_count < offset) || + (expected_count > *len)) { + printf("%s:%d bad response size %d\n", + __FILE__, __LINE__, + expected_count); + return TPM_DRIVER_ERR; + } + } + } + + /* Wait for the next portion */ + if (tis_wait_valid(locality)) { + printf("%s:%d failed to read response\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + if (offset == expected_count) + break; /* We got all we need */ + + } while (tis_has_valid_data(locality)); + + /* * Make sure we indeed read all there was. */ + if (tis_has_valid_data(locality)) { + printf("%s:%d wrong receive status: %x %d bytes left\n", + __FILE__, __LINE__, tpm_read_status(locality), + tpm_read_burst_count(locality)); + return TPM_DRIVER_ERR; + } + + /* Tell the TPM that we are done. */ + if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) + return TPM_DRIVER_ERR; + + *len = offset; + return 0; +} + +/* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or TPM_DRIVER_ERR on + * failure (in case device probing did not succeed). + */ +int tis_init(void) +{ + if (tis_probe()) + return TPM_DRIVER_ERR; + return 0; +} + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. After all commands have been + * completed the caller is supposed to call tis_close(). + * + * Returns 0 on success, TPM_DRIVER_ERR on failure. + */ +int tis_open(void) +{ + u8 locality = 0; /* we use locality zero for everything */ + + if (tis_close()) + return TPM_DRIVER_ERR; + + /* now request access to locality */ + tis_request_access(locality); + + /* did we get a lock? */ + if (tis_wait_received_access(locality)) { + printf("%s:%d - failed to lock locality %d\n", + __FILE__, __LINE__, locality); + return TPM_DRIVER_ERR; + } + + /* Certain TPMs seem to need some delay here or they hang... */ + udelay(10); + + if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) + return TPM_DRIVER_ERR; + + return 0; +} + +/* + * tis_close() + * + * terminate the current session with the TPM by releasing the locked + * locality. Returns 0 on success of TPM_DRIVER_ERR on failure (in case lock + * removal did not succeed). + */ +int tis_close(void) +{ + u8 locality = 0; + if (tis_has_access(locality)) { + tis_drop_access(locality); + if (tis_wait_dropped_access(locality)) { + printf("%s:%d - failed to release locality %d\n", + __FILE__, __LINE__, locality); + return TPM_DRIVER_ERR; + } + } + return 0; +} + +/* + * tis_sendrecv() + * + * Send the requested data to the TPM and then try to get its response + * + * @sendbuf - buffer of the data to send + * @send_size size of the data to send + * @recvbuf - memory to save the response to + * @recv_len - pointer to the size of the response buffer + * + * Returns 0 on success (and places the number of response bytes at recv_len) + * or TPM_DRIVER_ERR on failure. + */ +int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, + uint8_t *recvbuf, size_t *recv_len) +{ + if (tis_senddata(sendbuf, send_size)) { + printf("%s:%d failed sending data to TPM\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + return tis_readresponse(recvbuf, recv_len); +} + +#ifdef __RAMSTAGE__ + +/* + * tis_setup_interrupt() + * + * Set up the interrupt vector and polarity for locality 0 and + * disable all interrupts so they are unused in firmware but can + * be enabled by the OS. + * + * The values used here must match what is passed in the TPM ACPI + * device if ACPI is used on the platform. + * + * @vector - TPM interrupt vector + * @polarity - TPM interrupt polarity + * + * Returns 0 on success, TPM_DRIVER_ERR on failure. + */ +static int tis_setup_interrupt(int vector, int polarity) +{ + u8 locality = 0; + int has_access = tis_has_access(locality); + + /* Open connection and request access if not already granted */ + if (!has_access && tis_open() < 0) + return TPM_DRIVER_ERR; + + /* Set TPM interrupt vector */ + tpm_write_int_vector(vector, locality); + + /* Set TPM interupt polarity and disable interrupts */ + tpm_write_int_polarity(polarity, locality); + + /* Close connection if it was opened */ + if (!has_access && tis_close() < 0) + return TPM_DRIVER_ERR; + + return 0; +} + +static void lpc_tpm_read_resources(struct device *dev) +{ + /* Static 5K memory region specified in Kconfig */ + mmio_resource(dev, 0, CONFIG_TPM_TIS_BASE_ADDRESS >> 10, 0x5000 >> 10); +} + +static void lpc_tpm_set_resources(struct device *dev) +{ + tpm_config_t *config = (tpm_config_t *)dev->chip_info; + struct resource *res; + + for (res = dev->resource_list; res; res = res->next) { + if (!(res->flags & IORESOURCE_ASSIGNED)) + continue; + + if (res->flags & IORESOURCE_IRQ) { + /* Set interrupt vector */ + tis_setup_interrupt((int)res->base, + config->irq_polarity); + } else { + continue; + } + + res->flags |= IORESOURCE_STORED; + report_resource_stored(dev, res, " <tpm>"); + } +} + +static struct device_operations lpc_tpm_ops = { + .read_resources = &lpc_tpm_read_resources, + .set_resources = &lpc_tpm_set_resources, +}; + +static struct pnp_info pnp_dev_info[] = { + { .flags = PNP_IRQ0 } +}; + +static void enable_dev(struct device *dev) +{ + pnp_enable_devices(dev, &lpc_tpm_ops, + ARRAY_SIZE(pnp_dev_info), pnp_dev_info); +} + +struct chip_operations drivers_pc80_tpm_ops = { + CHIP_NAME("LPC TPM") + .enable_dev = enable_dev +}; + +#endif /* __RAMSTAGE__ */ diff --git a/src/include/antirollback.h b/src/include/antirollback.h index 5ba36f7..9d3c3fd 100644 --- a/src/include/antirollback.h +++ b/src/include/antirollback.h @@ -9,7 +9,7 @@ #ifndef ANTIROLLBACK_H_ #define ANTIROLLBACK_H_ -#include "tpm_lite/tss_constants.h" +#include <tpm/tss_constants.h> struct vb2_context; enum vb2_pcr_digest; diff --git a/src/include/tpm.h b/src/include/tpm.h deleted file mode 100644 index 9b4db4a..0000000 --- a/src/include/tpm.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2011 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#ifndef TPM_H_ -#define TPM_H_ - -#include <stddef.h> -#include <stdint.h> - -/* - * tis_init() - * - * Initialize the TPM device. Returns 0 on success or -1 on - * failure (in case device probing did not succeed). - */ -int tis_init(void); - -/* - * tis_open() - * - * Requests access to locality 0 for the caller. After all commands have been - * completed the caller is supposed to call tis_close(). - * - * Returns 0 on success, -1 on failure. - */ -int tis_open(void); - -/* - * tis_close() - * - * terminate the currect session with the TPM by releasing the locked - * locality. Returns 0 on success of -1 on failure (in case lock - * removal did not succeed). - */ -int tis_close(void); - -/* - * tis_sendrecv() - * - * Send the requested data to the TPM and then try to get its response - * - * @sendbuf - buffer of the data to send - * @send_size size of the data to send - * @recvbuf - memory to save the response to - * @recv_len - pointer to the size of the response buffer - * - * Returns 0 on success (and places the number of response bytes at recv_len) - * or -1 on failure. - */ -int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, - size_t *recv_len); - -void init_tpm(int s3resume); - -#endif /* TPM_H_ */ diff --git a/src/include/tpm/tpm.h b/src/include/tpm/tpm.h new file mode 100644 index 0000000..8923349 --- /dev/null +++ b/src/include/tpm/tpm.h @@ -0,0 +1,69 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2011 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef PC80_TPM_H +#define PC80_TPM_H + +#include <stddef.h> +#include <stdint.h> + +/* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or -1 on + * failure (in case device probing did not succeed). + */ +int tis_init(void); + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. After all commands have been + * completed the caller is supposed to call tis_close(). + * + * Returns 0 on success, -1 on failure. + */ +int tis_open(void); + +/* + * tis_close() + * + * terminate the currect session with the TPM by releasing the locked + * locality. Returns 0 on success of -1 on failure (in case lock + * removal did not succeed). + */ +int tis_close(void); + +/* + * tis_sendrecv() + * + * Send the requested data to the TPM and then try to get its response + * + * @sendbuf - buffer of the data to send + * @send_size size of the data to send + * @recvbuf - memory to save the response to + * @recv_len - pointer to the size of the response buffer + * + * Returns 0 on success (and places the number of response bytes at recv_len) + * or -1 on failure. + */ +int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, + size_t *recv_len); + +#endif /* PC80_TPM_H */ \ No newline at end of file diff --git a/src/include/tpm/tspi.h b/src/include/tpm/tspi.h new file mode 100644 index 0000000..8e1b5f0 --- /dev/null +++ b/src/include/tpm/tspi.h @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef TPM_TSPI_H +#define TPM_TSPI_H + +/** + * TSPI Implementation for coreboot without vboot2 + */ +void init_tpm(int s3resume); + + +#endif /* TPM_TSPI_H */ \ No newline at end of file diff --git a/src/include/tpm/tss.h b/src/include/tpm/tss.h new file mode 100644 index 0000000..c6c4b1a --- /dev/null +++ b/src/include/tpm/tss.h @@ -0,0 +1,136 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* + * TPM Lightweight Command Library. + * + * A low-level library for interfacing to TPM hardware or an emulator. + */ + +#ifndef TPM_TSS_H +#define TPM_TSS_H + +#include "tss_constants.h" + +/*****************************************************************************/ +/* Functions implemented in tlcl.c */ + +/** + * Call this first. Returns 0 if success, nonzero if error. + */ +uint32_t tlcl_lib_init(void); + +/** + * Perform a raw TPM request/response transaction. + */ +uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, + int max_length); + +/* Commands */ + +/** + * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for + * success). + */ +uint32_t tlcl_startup(void); + +/** + * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned + * (0 for success). + */ +uint32_t tlcl_resume(void); + +/** + * Run the self test. + * + * Note---this is synchronous. To run this in parallel with other firmware, + * use ContinueSelfTest(). The TPM error code is returned. + */ +uint32_t tlcl_self_test_full(void); + +/** + * Run the self test in the background. + */ +uint32_t tlcl_continue_self_test(void); + +/** + * Define a space with permission [perm]. [index] is the index for the space, + * [size] the usable data size. The TPM error code is returned. + */ +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); + +/** + * Write [length] bytes of [data] to space at [index]. The TPM error code is + * returned. + */ +uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); + +/** + * Read [length] bytes from space at [index] into [data]. The TPM error code + * is returned. + */ +uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); + +/** + * Assert physical presence in software. The TPM error code is returned. + */ +uint32_t tlcl_assert_physical_presence(void); + +/** + * Enable the physical presence command. The TPM error code is returned. + */ +uint32_t tlcl_physical_presence_cmd_enable(void); + +/** + * Finalize the physical presence settings: sofware PP is enabled, hardware PP + * is disabled, and the lifetime lock is set. The TPM error code is returned. + */ +uint32_t tlcl_finalize_physical_presence(void); + +/** + * Set the nvLocked bit. The TPM error code is returned. + */ +uint32_t tlcl_set_nv_locked(void); + +/** + * Issue a ForceClear. The TPM error code is returned. + */ +uint32_t tlcl_force_clear(void); + +/** + * Issue a PhysicalEnable. The TPM error code is returned. + */ +uint32_t tlcl_set_enable(void); + +/** + * Issue a SetDeactivated. Pass 0 to activate. Returns result code. + */ +uint32_t tlcl_set_deactivated(uint8_t flag); + +/** + * Get flags of interest. Pointers for flags you aren't interested in may + * be NULL. The TPM error code is returned. + */ +uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, + uint8_t *nvlocked); + +/** + * Set the bGlobalLock flag, which only a reboot can clear. The TPM error + * code is returned. + */ +uint32_t tlcl_set_global_lock(void); + +/** + * Perform a TPM_Extend. + */ +uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, + uint8_t *out_digest); + +/** + * Get the entire set of permanent flags. + */ +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); + +#endif \ No newline at end of file diff --git a/src/include/tpm/tss_constants.h b/src/include/tpm/tss_constants.h new file mode 100644 index 0000000..9cfbe2d --- /dev/null +++ b/src/include/tpm/tss_constants.h @@ -0,0 +1,98 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Some TPM constants and type definitions for standalone compilation for use + * in the firmware + */ + +#ifndef TPM_TSS_CONSTANTS_H +#define TPM_TSS_CONSTANTS_H + +#include <stdint.h> + +#define TPM_MAX_COMMAND_SIZE 4096 +#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ +#define TPM_PUBEK_SIZE 256 +#define TPM_PCR_DIGEST 20 + +#define TPM_E_NON_FATAL 0x800 + +#define TPM_SUCCESS ((uint32_t)0x00000000) + +#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) +#define TPM_E_BADINDEX ((uint32_t)0x00000002) +#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) +#define TPM_E_IOERROR ((uint32_t)0x0000001f) +#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) +#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) +#define TPM_E_OWNER_SET ((uint32_t)0x00000014) + +#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) +#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) + +#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ +#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ +#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ +#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ +#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ +#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ +#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ +#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ +#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ +#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ +#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ + +#define TPM_NV_INDEX0 ((uint32_t)0x00000000) +#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) +#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) +#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) +#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) +#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) + +#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) +#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) +#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) + +#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) +#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) +#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) + +typedef uint8_t TSS_BOOL; +typedef uint16_t TPM_STRUCTURE_TAG; + +typedef struct tdTPM_PERMANENT_FLAGS +{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL disable; + TSS_BOOL ownership; + TSS_BOOL deactivated; + TSS_BOOL readPubek; + TSS_BOOL disableOwnerClear; + TSS_BOOL allowMaintenance; + TSS_BOOL physicalPresenceLifetimeLock; + TSS_BOOL physicalPresenceHWEnable; + TSS_BOOL physicalPresenceCMDEnable; + TSS_BOOL CEKPUsed; + TSS_BOOL TPMpost; + TSS_BOOL TPMpostLock; + TSS_BOOL FIPS; + TSS_BOOL Operator; + TSS_BOOL enableRevokeEK; + TSS_BOOL nvLocked; + TSS_BOOL readSRKPub; + TSS_BOOL tpmEstablished; + TSS_BOOL maintenanceDone; + TSS_BOOL disableFullDALogicInfo; +} TPM_PERMANENT_FLAGS; + +typedef struct tdTPM_STCLEAR_FLAGS{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL deactivated; + TSS_BOOL disableForceClear; + TSS_BOOL physicalPresence; + TSS_BOOL physicalPresenceLock; + TSS_BOOL bGlobalLock; +} TPM_STCLEAR_FLAGS; + +#endif /* TPM_TSS_CONSTANTS_H */ \ No newline at end of file diff --git a/src/include/tpm_lite/tlcl.h b/src/include/tpm_lite/tlcl.h deleted file mode 100644 index 7724592..0000000 --- a/src/include/tpm_lite/tlcl.h +++ /dev/null @@ -1,137 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* - * TPM Lightweight Command Library. - * - * A low-level library for interfacing to TPM hardware or an emulator. - */ - -#ifndef TPM_LITE_TLCL_H_ -#define TPM_LITE_TLCL_H_ -#include <stdint.h> - -#include "tss_constants.h" - -/*****************************************************************************/ -/* Functions implemented in tlcl.c */ - -/** - * Call this first. Returns 0 if success, nonzero if error. - */ -uint32_t tlcl_lib_init(void); - -/** - * Perform a raw TPM request/response transaction. - */ -uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, - int max_length); - -/* Commands */ - -/** - * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for - * success). - */ -uint32_t tlcl_startup(void); - -/** - * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned - * (0 for success). - */ -uint32_t tlcl_resume(void); - -/** - * Run the self test. - * - * Note---this is synchronous. To run this in parallel with other firmware, - * use ContinueSelfTest(). The TPM error code is returned. - */ -uint32_t tlcl_self_test_full(void); - -/** - * Run the self test in the background. - */ -uint32_t tlcl_continue_self_test(void); - -/** - * Define a space with permission [perm]. [index] is the index for the space, - * [size] the usable data size. The TPM error code is returned. - */ -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); - -/** - * Write [length] bytes of [data] to space at [index]. The TPM error code is - * returned. - */ -uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); - -/** - * Read [length] bytes from space at [index] into [data]. The TPM error code - * is returned. - */ -uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); - -/** - * Assert physical presence in software. The TPM error code is returned. - */ -uint32_t tlcl_assert_physical_presence(void); - -/** - * Enable the physical presence command. The TPM error code is returned. - */ -uint32_t tlcl_physical_presence_cmd_enable(void); - -/** - * Finalize the physical presence settings: sofware PP is enabled, hardware PP - * is disabled, and the lifetime lock is set. The TPM error code is returned. - */ -uint32_t tlcl_finalize_physical_presence(void); - -/** - * Set the nvLocked bit. The TPM error code is returned. - */ -uint32_t tlcl_set_nv_locked(void); - -/** - * Issue a ForceClear. The TPM error code is returned. - */ -uint32_t tlcl_force_clear(void); - -/** - * Issue a PhysicalEnable. The TPM error code is returned. - */ -uint32_t tlcl_set_enable(void); - -/** - * Issue a SetDeactivated. Pass 0 to activate. Returns result code. - */ -uint32_t tlcl_set_deactivated(uint8_t flag); - -/** - * Get flags of interest. Pointers for flags you aren't interested in may - * be NULL. The TPM error code is returned. - */ -uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, - uint8_t *nvlocked); - -/** - * Set the bGlobalLock flag, which only a reboot can clear. The TPM error - * code is returned. - */ -uint32_t tlcl_set_global_lock(void); - -/** - * Perform a TPM_Extend. - */ -uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, - uint8_t *out_digest); - -/** - * Get the entire set of permanent flags. - */ -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); - -#endif /* TPM_LITE_TLCL_H_ */ diff --git a/src/include/tpm_lite/tss_constants.h b/src/include/tpm_lite/tss_constants.h deleted file mode 100644 index 883a5ad..0000000 --- a/src/include/tpm_lite/tss_constants.h +++ /dev/null @@ -1,96 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Some TPM constants and type definitions for standalone compilation for use - * in the firmware - */ -#ifndef VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#define VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#include <stdint.h> - -#define TPM_MAX_COMMAND_SIZE 4096 -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ -#define TPM_PUBEK_SIZE 256 -#define TPM_PCR_DIGEST 20 - -#define TPM_E_NON_FATAL 0x800 - -#define TPM_SUCCESS ((uint32_t)0x00000000) - -#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) -#define TPM_E_BADINDEX ((uint32_t)0x00000002) -#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) -#define TPM_E_IOERROR ((uint32_t)0x0000001f) -#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) -#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) -#define TPM_E_OWNER_SET ((uint32_t)0x00000014) - -#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) - -#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ -#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ -#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ -#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ -#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ -#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ -#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ -#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ -#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ -#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ -#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ - -#define TPM_NV_INDEX0 ((uint32_t)0x00000000) -#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) -#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) -#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) -#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) -#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) - -#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) -#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) -#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) - -#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) -#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) -#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) - -typedef uint8_t TSS_BOOL; -typedef uint16_t TPM_STRUCTURE_TAG; - -typedef struct tdTPM_PERMANENT_FLAGS -{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL disable; - TSS_BOOL ownership; - TSS_BOOL deactivated; - TSS_BOOL readPubek; - TSS_BOOL disableOwnerClear; - TSS_BOOL allowMaintenance; - TSS_BOOL physicalPresenceLifetimeLock; - TSS_BOOL physicalPresenceHWEnable; - TSS_BOOL physicalPresenceCMDEnable; - TSS_BOOL CEKPUsed; - TSS_BOOL TPMpost; - TSS_BOOL TPMpostLock; - TSS_BOOL FIPS; - TSS_BOOL Operator; - TSS_BOOL enableRevokeEK; - TSS_BOOL nvLocked; - TSS_BOOL readSRKPub; - TSS_BOOL tpmEstablished; - TSS_BOOL maintenanceDone; - TSS_BOOL disableFullDALogicInfo; -} TPM_PERMANENT_FLAGS; - -typedef struct tdTPM_STCLEAR_FLAGS{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL deactivated; - TSS_BOOL disableForceClear; - TSS_BOOL physicalPresence; - TSS_BOOL physicalPresenceLock; - TSS_BOOL bGlobalLock; -} TPM_STCLEAR_FLAGS; - -#endif /* VBOOT_REFERENCE_TSS_CONSTANTS_H_ */ diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 8597667..140421e 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -16,7 +16,7 @@ # along with this program; if not, write to the Free Software # Foundation, Inc. # -subdirs-y += loaders +subdirs-y += loaders tpm bootblock-y += assets.c bootblock-y += prog_loaders.c @@ -54,12 +54,6 @@ verstage-y += boot_device.c verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c -ifeq ($(MOCK_TPM),1) -libverstage-y += mocked_tlcl.c -else -libverstage-y += tlcl.c -endif - verstage-$(CONFIG_GENERIC_UDELAY) += timer.c verstage-$(CONFIG_GENERIC_GPIO_LIB) += gpio.c verstage-y += mem_pool.c diff --git a/src/lib/mocked_tlcl.c b/src/lib/mocked_tlcl.c deleted file mode 100644 index c5c12bf..0000000 --- a/src/lib/mocked_tlcl.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <tpm_lite/tlcl.h> - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -uint32_t tlcl_lib_init(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_resume(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_continue_self_test(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_global_lock(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} diff --git a/src/lib/tlcl.c b/src/lib/tlcl.c deleted file mode 100644 index ccf4e80..0000000 --- a/src/lib/tlcl.c +++ /dev/null @@ -1,327 +0,0 @@ -/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* A lightweight TPM command library. - * - * The general idea is that TPM commands are array of bytes whose - * fields are mostly compile-time constant. The goal is to build much - * of the commands at compile time (or build time) and change some of - * the fields at run time as needed. The code in - * utility/tlcl_generator.c builds structures containing the commands, - * as well as the offsets of the fields that need to be set at run - * time. - */ - -#include <assert.h> -#include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm.h> -#include <vb2_api.h> -#include "tlcl_internal.h" -#include "tlcl_structures.h" - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -static int tpm_send_receive(const uint8_t *request, - uint32_t request_length, - uint8_t *response, - uint32_t *response_length) -{ - size_t len = *response_length; - if (tis_sendrecv(request, request_length, response, &len)) - return VB2_ERROR_UNKNOWN; - /* check 64->32bit overflow and (re)check response buffer overflow */ - if (len > *response_length) - return VB2_ERROR_UNKNOWN; - *response_length = len; - return VB2_SUCCESS; -} - -/* Sets the size field of a TPM command. */ -static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { - to_tpm_uint32(buffer + sizeof(uint16_t), size); -} - -/* Gets the size field of a TPM command. */ -__attribute__((unused)) -static inline int tpm_command_size(const uint8_t* buffer) { - uint32_t size; - from_tpm_uint32(buffer + sizeof(uint16_t), &size); - return (int) size; -} - -/* Gets the code field of a TPM command. */ -static inline int tpm_command_code(const uint8_t* buffer) { - uint32_t code; - from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int tpm_return_code(const uint8_t* buffer) { - return tpm_command_code(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, - uint8_t* response, int max_length) { - uint32_t response_length = max_length; - uint32_t result; - - result = tpm_send_receive(request, tpm_command_size(request), - response, &response_length); - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", - tpm_command_code(request), result); - return result; - } - /* Otherwise, use the result code from the response */ - result = tpm_return_code(response); - - /* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - - VBDEBUG("TPM: command 0x%x returned 0x%x\n", - tpm_command_code(request), result); - -return result; -} - - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. Waits for the self test to complete if needed. */ -uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, - int max_length) { - uint32_t result = tlcl_send_receive_no_retry(request, response, - max_length); - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = tlcl_continue_self_test(); - if (result != TPM_SUCCESS) - return result; -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = tlcl_send_receive_no_retry(request, response, - max_length); -#else - /* This needs serious testing. The TPM specification says: "iii. - * The caller MUST wait for the actions of TPM_ContinueSelfTest - * to complete before reissuing the command C1." But, if - * ContinueSelfTest is non-blocking, how do we know that the - * actions have completed other than trying again? */ - do { - result = tlcl_send_receive_no_retry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - return result; -} - -/* Sends a command and returns the error code. */ -static uint32_t send(const uint8_t* command) { - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - return tlcl_send_receive(command, response, sizeof(response)); -} - -/* Exported functions. */ - -uint32_t tlcl_lib_init(void) { - if (tis_init()) - return VB2_ERROR_UNKNOWN; - if (tis_open()) - return VB2_ERROR_UNKNOWN; - return VB2_SUCCESS; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("TPM: Startup\n"); - return send(tpm_startup_cmd.buffer); -} - -uint32_t tlcl_resume(void) { - VBDEBUG("TPM: Resume\n"); - return send(tpm_resume_cmd.buffer); -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("TPM: Self test full\n"); - return send(tpm_selftestfull_cmd.buffer); -} - -uint32_t tlcl_continue_self_test(void) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - VBDEBUG("TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - struct s_tpm_nv_definespace_cmd cmd; - VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); - memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); - return send(cmd.buffer); -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - struct s_tpm_nv_write_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - const int total_length = - kTpmRequestHeaderLength + kWriteInfoLength + length; - - VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); - assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); - set_tpm_command_size(cmd.buffer, total_length); - - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); - memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); - - return tlcl_send_receive(cmd.buffer, response, sizeof(response)); -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - struct s_tpm_nv_read_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t result_length; - uint32_t result; - - VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result == TPM_SUCCESS && length > 0) { - uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; - from_tpm_uint32(nv_read_cursor, &result_length); - nv_read_cursor += sizeof(uint32_t); - memcpy(data, nv_read_cursor, result_length); - } - - return result; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("TPM: Asserting physical presence\n"); - return send(tpm_ppassert_cmd.buffer); -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("TPM: Enable the physical presence command\n"); - return send(tpm_ppenable_cmd.buffer); -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); - return send(tpm_finalizepp_cmd.buffer); -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("TPM: Set NV locked\n"); - return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("TPM: Force clear\n"); - return send(tpm_forceclear_cmd.buffer); -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("TPM: Enabling TPM\n"); - return send(tpm_physicalenable_cmd.buffer); -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - struct s_tpm_physicalsetdeactivated_cmd cmd; - VBDEBUG("TPM: SetDeactivated(%d)\n", flag); - memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); - *(cmd.buffer + cmd.deactivated) = flag; - return send(cmd.buffer); -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t size; - uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, - sizeof(response)); - if (result != TPM_SUCCESS) - return result; - from_tpm_uint32(response + kTpmResponseHeaderLength, &size); - assert(size == sizeof(TPM_PERMANENT_FLAGS)); - memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), - sizeof(TPM_PERMANENT_FLAGS)); - return result; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - TPM_PERMANENT_FLAGS pflags; - uint32_t result = tlcl_get_permanent_flags(&pflags); - if (result == TPM_SUCCESS) { - if (disable) - *disable = pflags.disable; - if (deactivated) - *deactivated = pflags.deactivated; - if (nvlocked) - *nvlocked = pflags.nvLocked; - VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", - pflags.disable, pflags.deactivated, pflags.nvLocked); - } - return result; -} - -uint32_t tlcl_set_global_lock(void) -{ - uint32_t x; - VBDEBUG("TPM: Set global lock\n"); - return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - struct s_tpm_extend_cmd cmd; - uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; - uint32_t result; - - memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); - memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result != TPM_SUCCESS) - return result; - - if (out_digest) - memcpy(out_digest, response + kTpmResponseHeaderLength, - kPcrDigestLength); - return result; -} diff --git a/src/lib/tlcl_internal.h b/src/lib/tlcl_internal.h deleted file mode 100644 index 8261b0d..0000000 --- a/src/lib/tlcl_internal.h +++ /dev/null @@ -1,61 +0,0 @@ -/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef TPM_LITE_TLCL_INTERNAL_H_ -#define TPM_LITE_TLCL_INTERNAL_H_ - -/* - * These numbers derive from adding the sizes of command fields as shown in the - * TPM commands manual. - */ -#define kTpmRequestHeaderLength 10 -#define kTpmResponseHeaderLength 10 -#define kTpmReadInfoLength 12 -#define kEncAuthLength 20 -#define kPcrDigestLength 20 - - -/* - * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM - * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command - * buffer into a variable. - */ -__attribute__((unused)) -static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { - buffer[0] = (uint8_t)(x >> 24); - buffer[1] = (uint8_t)((x >> 16) & 0xff); - buffer[2] = (uint8_t)((x >> 8) & 0xff); - buffer[3] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | - (buffer[2] << 8) | - buffer[3]); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { - buffer[0] = (uint8_t)(x >> 8); - buffer[1] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { - *x = (buffer[0] << 8) | buffer[1]; -} - -#endif /* TPM_LITE_TLCL_INTERNAL_H_ */ diff --git a/src/lib/tlcl_structures.h b/src/lib/tlcl_structures.h deleted file mode 100644 index 36c1bb9..0000000 --- a/src/lib/tlcl_structures.h +++ /dev/null @@ -1,138 +0,0 @@ -/* This file is automatically generated */ - -const struct s_tpm_extend_cmd{ - uint8_t buffer[34]; - uint16_t pcrNum; - uint16_t inDigest; -} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, -10, 14, }; - -const struct s_tpm_get_random_cmd{ - uint8_t buffer[14]; - uint16_t bytesRequested; -} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, -10, }; - -const struct s_tpm_getownership_cmd{ - uint8_t buffer[22]; -} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, -}; - -const struct s_tpm_getpermissions_cmd{ - uint8_t buffer[22]; - uint16_t index; -} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, -18, }; - -const struct s_tpm_getstclearflags_cmd{ - uint8_t buffer[22]; -} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, -}; - -const struct s_tpm_getflags_cmd{ - uint8_t buffer[22]; -} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, -}; - -const struct s_tpm_physicalsetdeactivated_cmd{ - uint8_t buffer[11]; - uint16_t deactivated; -} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, -10, }; - -const struct s_tpm_physicalenable_cmd{ - uint8_t buffer[10]; -} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, -}; - -const struct s_tpm_physicaldisable_cmd{ - uint8_t buffer[10]; -} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, -}; - -const struct s_tpm_forceclear_cmd{ - uint8_t buffer[10]; -} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, -}; - -const struct s_tpm_readpubek_cmd{ - uint8_t buffer[30]; -} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, -}; - -const struct s_tpm_continueselftest_cmd{ - uint8_t buffer[10]; -} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, -}; - -const struct s_tpm_selftestfull_cmd{ - uint8_t buffer[10]; -} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, -}; - -const struct s_tpm_resume_cmd{ - uint8_t buffer[12]; -} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, -}; - -const struct s_tpm_savestate_cmd{ - uint8_t buffer[10]; -} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, -}; - -const struct s_tpm_startup_cmd{ - uint8_t buffer[12]; -} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, -}; - -const struct s_tpm_finalizepp_cmd{ - uint8_t buffer[12]; -} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, -}; - -const struct s_tpm_pplock_cmd{ - uint8_t buffer[12]; -} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, -}; - -const struct s_tpm_ppenable_cmd{ - uint8_t buffer[12]; -} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, -}; - -const struct s_tpm_ppassert_cmd{ - uint8_t buffer[12]; -} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, -}; - -const struct s_tpm_pcr_read_cmd{ - uint8_t buffer[14]; - uint16_t pcrNum; -} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, -10, }; - -const struct s_tpm_nv_read_cmd{ - uint8_t buffer[22]; - uint16_t index; - uint16_t length; -} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, -10, 18, }; - -const struct s_tpm_nv_write_cmd{ - uint8_t buffer[256]; - uint16_t index; - uint16_t length; - uint16_t data; -} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, -10, 18, 22, }; - -const struct s_tpm_nv_definespace_cmd{ - uint8_t buffer[101]; - uint16_t index; - uint16_t perm; - uint16_t size; -} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, -12, 70, 77, }; - -const int kWriteInfoLength = 12; -const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/lib/tpm/Makefile.inc b/src/lib/tpm/Makefile.inc new file mode 100644 index 0000000..81a3eb9 --- /dev/null +++ b/src/lib/tpm/Makefile.inc @@ -0,0 +1,13 @@ +ifneq ($(CONFIG_CHROMEOS),y) +romstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +ramstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +else +romstage-$(CONFIG_LPC_TPM) += tspi.c +endif + +ifeq ($(MOCK_TPM),1) +libverstage-y += mocked_tss.c +else +libverstage-y += tss.c +endif + diff --git a/src/lib/tpm/mocked_tss.c b/src/lib/tpm/mocked_tss.c new file mode 100644 index 0000000..ce956ad --- /dev/null +++ b/src/lib/tpm/mocked_tss.c @@ -0,0 +1,136 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <tpm/tss.h> + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +uint32_t tlcl_lib_init(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_resume(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_continue_self_test(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_global_lock(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} diff --git a/src/lib/tpm/tspi.c b/src/lib/tpm/tspi.c new file mode 100644 index 0000000..00848f1 --- /dev/null +++ b/src/lib/tpm/tspi.c @@ -0,0 +1,95 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> + +#include <tpm/tss.h> +#include <tpm/tspi.h> + +void init_tpm(int s3resume) +{ + u32 result = 0; + + if (CONFIG_TPM_DEACTIVATE) { + printk(BIOS_SPEW, "TPM: Deactivate\n"); + + result = tlcl_set_deactivated(1); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + /* Doing TPM startup when we're not coming in on the S3 resume path + * saves us roughly 20ms in boot time only. This does not seem to + * be worth an API change to vboot_reference-firmware right now, so + * let's keep the code around, but just bail out early: + */ + if (s3resume ? CONFIG_NO_TPM_RESUME + : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) + return; + + printk(BIOS_DEBUG, "TPM initialization.\n"); + + if(tlcl_lib_init() != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + + if (s3resume) { + /* S3 Resume */ + printk(BIOS_SPEW, "TPM: Resume\n"); + + result = tlcl_resume(); + if(result == TPM_E_INVALID_POSTINIT) { + /* We're on a platform where the TPM maintains power + * in S3, so it's already initialized. + */ + printk(BIOS_DEBUG, "TPM: Already initialized.\n"); + return; + } else if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } else { + printk(BIOS_SPEW, "TPM: Startup\n"); + result = tlcl_startup(); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + if (result == TPM_SUCCESS) { + printk(BIOS_SPEW, "TPM: OK.\n"); + return; + } + + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + + if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { + printk(BIOS_ERR, "Hard reset!\n"); + post_code(POST_TPM_FAILURE); + if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) + cbmem_dump_console(); + hard_reset(); + } +} \ No newline at end of file diff --git a/src/lib/tpm/tss.c b/src/lib/tpm/tss.c new file mode 100644 index 0000000..08d743c --- /dev/null +++ b/src/lib/tpm/tss.c @@ -0,0 +1,331 @@ +/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* A lightweight TPM command library. + * + * The general idea is that TPM commands are array of bytes whose + * fields are mostly compile-time constant. The goal is to build much + * of the commands at compile time (or build time) and change some of + * the fields at run time as needed. The code in + * utility/tlcl_generator.c builds structures containing the commands, + * as well as the offsets of the fields that need to be set at run + * time. + */ + +#include <assert.h> +#include <string.h> +#include <tpm/tss.h> +#include <tpm.h> +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> +#include "tss_internal.h" +#include "tss_structures.h" + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +#define UNKNOWN_ERROR 0x10000001 // see VBOOT2 error codes.. + +static int tpm_send_receive(const uint8_t *request, + uint32_t request_length, + uint8_t *response, + uint32_t *response_length) +{ + size_t len = *response_length; + if (tis_sendrecv(request, request_length, response, &len)) + return UNKNOWN_ERROR; + /* check 64->32bit overflow and (re)check response buffer overflow */ + if (len > *response_length) + return UNKNOWN_ERROR; + *response_length = len; + return TPM_SUCCESS; +} + +/* Sets the size field of a TPM command. */ +static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { + to_tpm_uint32(buffer + sizeof(uint16_t), size); +} + +/* Gets the size field of a TPM command. */ +__attribute__((unused)) +static inline int tpm_command_size(const uint8_t* buffer) { + uint32_t size; + from_tpm_uint32(buffer + sizeof(uint16_t), &size); + return (int) size; +} + +/* Gets the code field of a TPM command. */ +static inline int tpm_command_code(const uint8_t* buffer) { + uint32_t code; + from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); + return code; +} + +/* Gets the return code field of a TPM result. */ +static inline int tpm_return_code(const uint8_t* buffer) { + return tpm_command_code(buffer); +} + +/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or + * DOING_SELFTEST errors are returned. + */ +static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, + uint8_t* response, int max_length) { + uint32_t response_length = max_length; + uint32_t result; + + result = tpm_send_receive(request, tpm_command_size(request), + response, &response_length); + if (0 != result) { + /* Communication with TPM failed, so response is garbage */ + VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", + tpm_command_code(request), result); + return result; + } + /* Otherwise, use the result code from the response */ + result = tpm_return_code(response); + + /* TODO: add paranoia about returned response_length vs. max_length + * (and possibly expected length from the response header). See + * crosbug.com/17017 */ + + VBDEBUG("TPM: command 0x%x returned 0x%x\n", + tpm_command_code(request), result); + +return result; +} + + +/* Sends a TPM command and gets a response. Returns 0 if success or the TPM + * error code if error. Waits for the self test to complete if needed. */ +uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, + int max_length) { + uint32_t result = tlcl_send_receive_no_retry(request, response, + max_length); + /* If the command fails because the self test has not completed, try it + * again after attempting to ensure that the self test has completed. */ + if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { + result = tlcl_continue_self_test(); + if (result != TPM_SUCCESS) + return result; +#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) + /* Retry only once */ + result = tlcl_send_receive_no_retry(request, response, + max_length); +#else + /* This needs serious testing. The TPM specification says: "iii. + * The caller MUST wait for the actions of TPM_ContinueSelfTest + * to complete before reissuing the command C1." But, if + * ContinueSelfTest is non-blocking, how do we know that the + * actions have completed other than trying again? */ + do { + result = tlcl_send_receive_no_retry(request, response, + max_length); + } while (result == TPM_E_DOING_SELFTEST); +#endif + } + return result; +} + +/* Sends a command and returns the error code. */ +static uint32_t send(const uint8_t* command) { + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + return tlcl_send_receive(command, response, sizeof(response)); +} + +/* Exported functions. */ + +uint32_t tlcl_lib_init(void) { + if (tis_init()) + return UNKNOWN_ERROR; + if (tis_open()) + return UNKNOWN_ERROR; + return TPM_SUCCESS; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("TPM: Startup\n"); + return send(tpm_startup_cmd.buffer); +} + +uint32_t tlcl_resume(void) { + VBDEBUG("TPM: Resume\n"); + return send(tpm_resume_cmd.buffer); +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("TPM: Self test full\n"); + return send(tpm_selftestfull_cmd.buffer); +} + +uint32_t tlcl_continue_self_test(void) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + VBDEBUG("TPM: Continue self test\n"); + /* Call the No Retry version of SendReceive to avoid recursion. */ + return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, + response, sizeof(response)); +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + struct s_tpm_nv_definespace_cmd cmd; + VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); + memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); + return send(cmd.buffer); +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + struct s_tpm_nv_write_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + const int total_length = + kTpmRequestHeaderLength + kWriteInfoLength + length; + + VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); + assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); + set_tpm_command_size(cmd.buffer, total_length); + + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); + memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); + + return tlcl_send_receive(cmd.buffer, response, sizeof(response)); +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + struct s_tpm_nv_read_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t result_length; + uint32_t result; + + VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result == TPM_SUCCESS && length > 0) { + uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; + from_tpm_uint32(nv_read_cursor, &result_length); + nv_read_cursor += sizeof(uint32_t); + memcpy(data, nv_read_cursor, result_length); + } + + return result; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("TPM: Asserting physical presence\n"); + return send(tpm_ppassert_cmd.buffer); +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("TPM: Enable the physical presence command\n"); + return send(tpm_ppenable_cmd.buffer); +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); + return send(tpm_finalizepp_cmd.buffer); +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("TPM: Set NV locked\n"); + return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("TPM: Force clear\n"); + return send(tpm_forceclear_cmd.buffer); +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("TPM: Enabling TPM\n"); + return send(tpm_physicalenable_cmd.buffer); +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + struct s_tpm_physicalsetdeactivated_cmd cmd; + VBDEBUG("TPM: SetDeactivated(%d)\n", flag); + memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); + *(cmd.buffer + cmd.deactivated) = flag; + return send(cmd.buffer); +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t size; + uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, + sizeof(response)); + if (result != TPM_SUCCESS) + return result; + from_tpm_uint32(response + kTpmResponseHeaderLength, &size); + assert(size == sizeof(TPM_PERMANENT_FLAGS)); + memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), + sizeof(TPM_PERMANENT_FLAGS)); + return result; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + TPM_PERMANENT_FLAGS pflags; + uint32_t result = tlcl_get_permanent_flags(&pflags); + if (result == TPM_SUCCESS) { + if (disable) + *disable = pflags.disable; + if (deactivated) + *deactivated = pflags.deactivated; + if (nvlocked) + *nvlocked = pflags.nvLocked; + VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", + pflags.disable, pflags.deactivated, pflags.nvLocked); + } + return result; +} + +uint32_t tlcl_set_global_lock(void) +{ + uint32_t x; + VBDEBUG("TPM: Set global lock\n"); + return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + struct s_tpm_extend_cmd cmd; + uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; + uint32_t result; + + memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); + memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result != TPM_SUCCESS) + return result; + + if (out_digest) + memcpy(out_digest, response + kTpmResponseHeaderLength, + kPcrDigestLength); + return result; +} diff --git a/src/lib/tpm/tss_internal.h b/src/lib/tpm/tss_internal.h new file mode 100644 index 0000000..bc56b12 --- /dev/null +++ b/src/lib/tpm/tss_internal.h @@ -0,0 +1,61 @@ +/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef LIB_TPM_TSS_INTERNAL_H +#define LIB_TPM_TSS_INTERNAL_H + +/* + * These numbers derive from adding the sizes of command fields as shown in the + * TPM commands manual. + */ +#define kTpmRequestHeaderLength 10 +#define kTpmResponseHeaderLength 10 +#define kTpmReadInfoLength 12 +#define kEncAuthLength 20 +#define kPcrDigestLength 20 + + +/* + * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM + * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command + * buffer into a variable. + */ +__attribute__((unused)) +static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { + buffer[0] = (uint8_t)(x >> 24); + buffer[1] = (uint8_t)((x >> 16) & 0xff); + buffer[2] = (uint8_t)((x >> 8) & 0xff); + buffer[3] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { + *x = ((buffer[0] << 24) | + (buffer[1] << 16) | + (buffer[2] << 8) | + buffer[3]); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { + buffer[0] = (uint8_t)(x >> 8); + buffer[1] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { + *x = (buffer[0] << 8) | buffer[1]; +} + +#endif /* LIB_TPM_TSS_INTERNAL_H */ \ No newline at end of file diff --git a/src/lib/tpm/tss_structures.h b/src/lib/tpm/tss_structures.h new file mode 100644 index 0000000..36c1bb9 --- /dev/null +++ b/src/lib/tpm/tss_structures.h @@ -0,0 +1,138 @@ +/* This file is automatically generated */ + +const struct s_tpm_extend_cmd{ + uint8_t buffer[34]; + uint16_t pcrNum; + uint16_t inDigest; +} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, +10, 14, }; + +const struct s_tpm_get_random_cmd{ + uint8_t buffer[14]; + uint16_t bytesRequested; +} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, +10, }; + +const struct s_tpm_getownership_cmd{ + uint8_t buffer[22]; +} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, +}; + +const struct s_tpm_getpermissions_cmd{ + uint8_t buffer[22]; + uint16_t index; +} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, +18, }; + +const struct s_tpm_getstclearflags_cmd{ + uint8_t buffer[22]; +} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, +}; + +const struct s_tpm_getflags_cmd{ + uint8_t buffer[22]; +} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, +}; + +const struct s_tpm_physicalsetdeactivated_cmd{ + uint8_t buffer[11]; + uint16_t deactivated; +} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, +10, }; + +const struct s_tpm_physicalenable_cmd{ + uint8_t buffer[10]; +} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, +}; + +const struct s_tpm_physicaldisable_cmd{ + uint8_t buffer[10]; +} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, +}; + +const struct s_tpm_forceclear_cmd{ + uint8_t buffer[10]; +} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, +}; + +const struct s_tpm_readpubek_cmd{ + uint8_t buffer[30]; +} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, +}; + +const struct s_tpm_continueselftest_cmd{ + uint8_t buffer[10]; +} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, +}; + +const struct s_tpm_selftestfull_cmd{ + uint8_t buffer[10]; +} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, +}; + +const struct s_tpm_resume_cmd{ + uint8_t buffer[12]; +} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, +}; + +const struct s_tpm_savestate_cmd{ + uint8_t buffer[10]; +} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, +}; + +const struct s_tpm_startup_cmd{ + uint8_t buffer[12]; +} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, +}; + +const struct s_tpm_finalizepp_cmd{ + uint8_t buffer[12]; +} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, +}; + +const struct s_tpm_pplock_cmd{ + uint8_t buffer[12]; +} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, +}; + +const struct s_tpm_ppenable_cmd{ + uint8_t buffer[12]; +} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, +}; + +const struct s_tpm_ppassert_cmd{ + uint8_t buffer[12]; +} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, +}; + +const struct s_tpm_pcr_read_cmd{ + uint8_t buffer[14]; + uint16_t pcrNum; +} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, +10, }; + +const struct s_tpm_nv_read_cmd{ + uint8_t buffer[22]; + uint16_t index; + uint16_t length; +} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, +10, 18, }; + +const struct s_tpm_nv_write_cmd{ + uint8_t buffer[256]; + uint16_t index; + uint16_t length; + uint16_t data; +} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, +10, 18, 22, }; + +const struct s_tpm_nv_definespace_cmd{ + uint8_t buffer[101]; + uint16_t index; + uint16_t perm; + uint16_t size; +} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, +12, 70, 77, }; + +const int kWriteInfoLength = 12; +const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/mainboard/google/auron/acpi/mainboard.asl b/src/mainboard/google/auron/acpi/mainboard.asl index 8461a9d..b4b0ba2 100644 --- a/src/mainboard/google/auron/acpi/mainboard.asl +++ b/src/mainboard/google/auron/acpi/mainboard.asl @@ -48,7 +48,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.PCI0.I2C0) diff --git a/src/mainboard/google/auron/devicetree.cb b/src/mainboard/google/auron/devicetree.cb index 77e71b8..ea71cf6 100644 --- a/src/mainboard/google/auron/devicetree.cb +++ b/src/mainboard/google/auron/devicetree.cb @@ -90,7 +90,7 @@ chip soc/intel/broadwell device pci 1d.0 on end # USB2 EHCI device pci 1e.0 off end # PCI bridge device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/cyan/acpi/mainboard.asl b/src/mainboard/google/cyan/acpi/mainboard.asl index 9918672..183c4b1 100755 --- a/src/mainboard/google/cyan/acpi/mainboard.asl +++ b/src/mainboard/google/cyan/acpi/mainboard.asl @@ -46,7 +46,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.I2C1) diff --git a/src/mainboard/google/cyan/devicetree.cb b/src/mainboard/google/cyan/devicetree.cb index c36ae3d..c845a8c 100755 --- a/src/mainboard/google/cyan/devicetree.cb +++ b/src/mainboard/google/cyan/devicetree.cb @@ -126,7 +126,7 @@ chip soc/intel/braswell device pci 1e.6 on end # 8086 2290 - SPI 2 device pci 1e.7 on end # 8086 22ac - SPI 3 device pci 1f.0 on # 8086 229c - LPC bridge - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/glados/acpi/mainboard.asl b/src/mainboard/google/glados/acpi/mainboard.asl index 53001e4..f3915fb 100644 --- a/src/mainboard/google/glados/acpi/mainboard.asl +++ b/src/mainboard/google/glados/acpi/mainboard.asl @@ -63,7 +63,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Trackpad */ diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb index b48556f..e466278 100644 --- a/src/mainboard/google/glados/devicetree.cb +++ b/src/mainboard/google/glados/devicetree.cb @@ -93,7 +93,7 @@ chip soc/intel/skylake device pci 1e.4 on end # eMMC device pci 1e.6 on end # SDCard device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end chip ec/google/chromeec diff --git a/src/mainboard/google/jecht/acpi/mainboard.asl b/src/mainboard/google/jecht/acpi/mainboard.asl index 236f881..7545cb0 100644 --- a/src/mainboard/google/jecht/acpi/mainboard.asl +++ b/src/mainboard/google/jecht/acpi/mainboard.asl @@ -33,7 +33,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/google/link/romstage.c b/src/mainboard/google/link/romstage.c index e9b4a09..1837d50 100644 --- a/src/mainboard/google/link/romstage.c +++ b/src/mainboard/google/link/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/msr.h> #include <halt.h> #include "gpio.h" -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <southbridge/intel/bd82x6x/chip.h> diff --git a/src/mainboard/google/parrot/romstage.c b/src/mainboard/google/parrot/romstage.c index a947c48..209611e 100644 --- a/src/mainboard/google/parrot/romstage.c +++ b/src/mainboard/google/parrot/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <cbfs.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "ec/compal/ene932/ec.h" static void pch_enable_lpc(void) diff --git a/src/mainboard/google/samus/acpi/mainboard.asl b/src/mainboard/google/samus/acpi/mainboard.asl index 04f98a9..a2a337f 100644 --- a/src/mainboard/google/samus/acpi/mainboard.asl +++ b/src/mainboard/google/samus/acpi/mainboard.asl @@ -62,7 +62,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/google/samus/devicetree.cb b/src/mainboard/google/samus/devicetree.cb index d12762d..104af07 100644 --- a/src/mainboard/google/samus/devicetree.cb +++ b/src/mainboard/google/samus/devicetree.cb @@ -94,7 +94,7 @@ chip soc/intel/broadwell device pci 1d.0 off end # USB2 EHCI device pci 1e.0 off end # PCI bridge device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/stout/romstage.c b/src/mainboard/google/stout/romstage.c index 31b61e2..9d9f761 100644 --- a/src/mainboard/google/stout/romstage.c +++ b/src/mainboard/google/stout/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <ec/quanta/it8518/ec.h> #include "ec.h" diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c index bcf498b..d612d67 100644 --- a/src/mainboard/intel/emeraldlake2/romstage.c +++ b/src/mainboard/intel/emeraldlake2/romstage.c @@ -39,7 +39,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #define SIO_PORT 0x164e diff --git a/src/mainboard/intel/kunimitsu/acpi/mainboard.asl b/src/mainboard/intel/kunimitsu/acpi/mainboard.asl index a5e7bcf..047e91c 100644 --- a/src/mainboard/intel/kunimitsu/acpi/mainboard.asl +++ b/src/mainboard/intel/kunimitsu/acpi/mainboard.asl @@ -52,7 +52,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.PCI0.I2C0) { diff --git a/src/mainboard/intel/sklrvp/acpi/mainboard.asl b/src/mainboard/intel/sklrvp/acpi/mainboard.asl index d771f62..8737aa6 100644 --- a/src/mainboard/intel/sklrvp/acpi/mainboard.asl +++ b/src/mainboard/intel/sklrvp/acpi/mainboard.asl @@ -28,7 +28,7 @@ */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/intel/strago/acpi/mainboard.asl b/src/mainboard/intel/strago/acpi/mainboard.asl index eefa005..01287a0 100755 --- a/src/mainboard/intel/strago/acpi/mainboard.asl +++ b/src/mainboard/intel/strago/acpi/mainboard.asl @@ -45,7 +45,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.I2C1) { diff --git a/src/mainboard/intel/strago/devicetree.cb b/src/mainboard/intel/strago/devicetree.cb index bcf92f1..15b87a8 100755 --- a/src/mainboard/intel/strago/devicetree.cb +++ b/src/mainboard/intel/strago/devicetree.cb @@ -126,7 +126,7 @@ chip soc/intel/braswell device pci 1e.6 on end # 8086 2290 - SPI 2 device pci 1e.7 on end # 8086 22ac - SPI 3 device pci 1f.0 on # 8086 229c - LPC bridge - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb index cd70228..8fb40c1 100644 --- a/src/mainboard/lenovo/t420s/devicetree.cb +++ b/src/mainboard/lenovo/t420s/devicetree.cb @@ -112,7 +112,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t420s/dsdt.asl b/src/mainboard/lenovo/t420s/dsdt.asl index 64e4e9f..6d5c640 100644 --- a/src/mainboard/lenovo/t420s/dsdt.asl +++ b/src/mainboard/lenovo/t420s/dsdt.asl @@ -59,7 +59,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t430s/devicetree.cb b/src/mainboard/lenovo/t430s/devicetree.cb index f3e453e..56ca8cd 100644 --- a/src/mainboard/lenovo/t430s/devicetree.cb +++ b/src/mainboard/lenovo/t430s/devicetree.cb @@ -116,7 +116,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t430s/dsdt.asl b/src/mainboard/lenovo/t430s/dsdt.asl index 64e4e9f..6d5c640 100644 --- a/src/mainboard/lenovo/t430s/dsdt.asl +++ b/src/mainboard/lenovo/t430s/dsdt.asl @@ -59,7 +59,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb index ff9745e..6c1ea89 100644 --- a/src/mainboard/lenovo/t520/devicetree.cb +++ b/src/mainboard/lenovo/t520/devicetree.cb @@ -93,7 +93,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/t520/dsdt.asl +++ b/src/mainboard/lenovo/t520/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t530/devicetree.cb b/src/mainboard/lenovo/t530/devicetree.cb index e1b22fd..830ccdd 100644 --- a/src/mainboard/lenovo/t530/devicetree.cb +++ b/src/mainboard/lenovo/t530/devicetree.cb @@ -98,7 +98,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t530/dsdt.asl b/src/mainboard/lenovo/t530/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/t530/dsdt.asl +++ b/src/mainboard/lenovo/t530/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb index 8e9e0a1..9447bfc 100644 --- a/src/mainboard/lenovo/x201/devicetree.cb +++ b/src/mainboard/lenovo/x201/devicetree.cb @@ -156,7 +156,7 @@ chip northbridge/intel/nehalem # DLPC, not connected device pnp 164e.19 off end end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end end diff --git a/src/mainboard/lenovo/x201/dsdt.asl b/src/mainboard/lenovo/x201/dsdt.asl index f2f0a89..ec3f1f4 100644 --- a/src/mainboard/lenovo/x201/dsdt.asl +++ b/src/mainboard/lenovo/x201/dsdt.asl @@ -92,7 +92,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x201/romstage.c b/src/mainboard/lenovo/x201/romstage.c index 1e335d3..bb49b49 100644 --- a/src/mainboard/lenovo/x201/romstage.c +++ b/src/mainboard/lenovo/x201/romstage.c @@ -37,7 +37,7 @@ #include <timestamp.h> #include <arch/acpi.h> #include <cbmem.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #include "dock.h" diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb index 9c3aac6..36a6c07 100644 --- a/src/mainboard/lenovo/x220/devicetree.cb +++ b/src/mainboard/lenovo/x220/devicetree.cb @@ -126,7 +126,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/x220/dsdt.asl b/src/mainboard/lenovo/x220/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/x220/dsdt.asl +++ b/src/mainboard/lenovo/x220/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb index 99db7dd..9e1ed8a 100644 --- a/src/mainboard/lenovo/x230/devicetree.cb +++ b/src/mainboard/lenovo/x230/devicetree.cb @@ -128,7 +128,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/x230/dsdt.asl b/src/mainboard/lenovo/x230/dsdt.asl index 1c71c3c..20f83cc 100644 --- a/src/mainboard/lenovo/x230/dsdt.asl +++ b/src/mainboard/lenovo/x230/dsdt.asl @@ -57,7 +57,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c index 015ae08..cea088d 100644 --- a/src/mainboard/samsung/lumpy/romstage.c +++ b/src/mainboard/samsung/lumpy/romstage.c @@ -32,7 +32,7 @@ #include <cbmem.h> #include <console/console.h> #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <northbridge/intel/sandybridge/sandybridge.h> #include <northbridge/intel/sandybridge/raminit.h> #include <southbridge/intel/bd82x6x/pch.h> diff --git a/src/mainboard/samsung/stumpy/romstage.c b/src/mainboard/samsung/stumpy/romstage.c index 161c8d1..2906815 100644 --- a/src/mainboard/samsung/stumpy/romstage.c +++ b/src/mainboard/samsung/stumpy/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #if CONFIG_DRIVERS_UART_8250IO #include <superio/smsc/lpc47n207/lpc47n207.h> diff --git a/src/northbridge/intel/sandybridge/romstage_native.c b/src/northbridge/intel/sandybridge/romstage_native.c index 45f671c..13696bd 100644 --- a/src/northbridge/intel/sandybridge/romstage_native.c +++ b/src/northbridge/intel/sandybridge/romstage_native.c @@ -32,7 +32,7 @@ #include <device/pci_def.h> #include <device/device.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "raminit_native.h" #include <northbridge/intel/sandybridge/chip.h> #include "southbridge/intel/bd82x6x/pch.h" diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index 1b93eb6..108faf3 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -33,7 +33,7 @@ #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <vendorcode/google/chromeos/chromeos.h> #include <soc/gpio.h> #include <soc/iomap.h> diff --git a/src/soc/intel/braswell/romstage/romstage.c b/src/soc/intel/braswell/romstage/romstage.c index 64a3dee..fa9a815 100644 --- a/src/soc/intel/braswell/romstage/romstage.c +++ b/src/soc/intel/braswell/romstage/romstage.c @@ -50,7 +50,7 @@ #include <soc/romstage.h> #include <soc/smm.h> #include <soc/spi.h> -#include <tpm.h> +#include <tpm/tsṕi.h> void program_base_addresses(void) { diff --git a/src/soc/intel/broadwell/romstage/romstage.c b/src/soc/intel/broadwell/romstage/romstage.c index 27fb0f2..166ee30 100644 --- a/src/soc/intel/broadwell/romstage/romstage.c +++ b/src/soc/intel/broadwell/romstage/romstage.c @@ -29,7 +29,7 @@ #include <cbmem.h> #include <cpu/x86/mtrr.h> #include <elog.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> diff --git a/src/vendorcode/google/chromeos/vboot2/antirollback.c b/src/vendorcode/google/chromeos/vboot2/antirollback.c index 407b19c..f947c35 100644 --- a/src/vendorcode/google/chromeos/vboot2/antirollback.c +++ b/src/vendorcode/google/chromeos/vboot2/antirollback.c @@ -9,8 +9,8 @@ #include <antirollback.h> #include <stdlib.h> #include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm_lite/tss_constants.h> +#include <tpm/tss.h> +#include <tpm/tss_constants.h> #include <vb2_api.h> #ifndef offsetof

1 0

Patch set updated for coreboot: TPM: Merge of two TPM API's into one API.
by Philipp Deppenwiese 13 Aug '15

13 Aug '15

Philipp Deppenwiese (zaolin(a)das-labor.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10542 -gerrit commit e372ee1783ba4043587b05fde54074ba77d8053d Author: Philipp Deppenwiese <zaolin(a)das-labor.org> Date: Sat Jun 13 23:35:37 2015 +0200 TPM: Merge of two TPM API's into one API. Currently coreboot includes two TPM software implementations. Following changes are done: + Moved pc80/tpm to tpm directory because it's not pc80 specific. + Use Google's lib/tlcl.* small tpm software stack as the main one. + Remove the old one drivers/pc80/tpm/romstage.c which can't be used for vboot2. + Split & Merge implementations into TSS and TSPI. -> Rename tlcl* files into tss which is the common name. -> Move init_tpm(void) function from drivers/pc80/tpm/romstage.c into the lib/tpm/tspi.c which is also the common name for highlevel tpm functions based on tss. -> Put the tss and tspi files into tpm folders in lib/ and include/ . -> Change header includes so that tpm.h can be found in include/pc80/ and software stack related stuff in include/tpm. + Revert pragma once statements from previous commit. Compile: VBOOT2 Feature = yes Coreboot TPM Feature = yes Run: VBOOT2 Feature = not tested Coreboot TPM Feature = yes Change-Id: I8cbcd723d83ffcc0c1c47c58438dccdb16bb7cf7 Signed-off-by: Philipp Deppenwiese <zaolin(a)das-labor.org> --- src/cpu/intel/haswell/romstage.c | 2 +- src/drivers/pc80/Kconfig | 2 - src/drivers/pc80/Makefile.inc | 2 +- src/drivers/pc80/tpm/Kconfig | 46 -- src/drivers/pc80/tpm/Makefile.inc | 3 - src/drivers/pc80/tpm/acpi/tpm.asl | 196 ------ src/drivers/pc80/tpm/chip.h | 35 - src/drivers/pc80/tpm/romstage.c | 255 ------- src/drivers/pc80/tpm/tpm.c | 778 --------------------- src/drivers/tpm/Kconfig | 46 ++ src/drivers/tpm/Makefile.inc | 2 + src/drivers/tpm/acpi/tpm.asl | 196 ++++++ src/drivers/tpm/chip.h | 35 + src/drivers/tpm/tpm.c | 778 +++++++++++++++++++++ src/include/antirollback.h | 2 +- src/include/tpm.h | 71 -- src/include/tpm/tpm.h | 69 ++ src/include/tpm/tspi.h | 29 + src/include/tpm/tss.h | 136 ++++ src/include/tpm/tss_constants.h | 98 +++ src/include/tpm_lite/tlcl.h | 137 ---- src/include/tpm_lite/tss_constants.h | 96 --- src/lib/Makefile.inc | 8 +- src/lib/mocked_tlcl.c | 136 ---- src/lib/tlcl.c | 327 --------- src/lib/tlcl_internal.h | 61 -- src/lib/tlcl_structures.h | 138 ---- src/lib/tpm/Makefile.inc | 13 + src/lib/tpm/mocked_tss.c | 136 ++++ src/lib/tpm/tspi.c | 95 +++ src/lib/tpm/tss.c | 331 +++++++++ src/lib/tpm/tss_internal.h | 61 ++ src/lib/tpm/tss_structures.h | 138 ++++ src/mainboard/google/auron/acpi/mainboard.asl | 2 +- src/mainboard/google/auron/devicetree.cb | 2 +- src/mainboard/google/cyan/acpi/mainboard.asl | 2 +- src/mainboard/google/cyan/devicetree.cb | 2 +- src/mainboard/google/glados/acpi/mainboard.asl | 2 +- src/mainboard/google/glados/devicetree.cb | 2 +- src/mainboard/google/jecht/acpi/mainboard.asl | 2 +- src/mainboard/google/link/romstage.c | 2 +- src/mainboard/google/parrot/romstage.c | 2 +- src/mainboard/google/samus/acpi/mainboard.asl | 2 +- src/mainboard/google/samus/devicetree.cb | 2 +- src/mainboard/google/stout/romstage.c | 2 +- src/mainboard/intel/emeraldlake2/romstage.c | 2 +- src/mainboard/intel/kunimitsu/acpi/mainboard.asl | 2 +- src/mainboard/intel/sklrvp/acpi/mainboard.asl | 2 +- src/mainboard/intel/strago/acpi/mainboard.asl | 2 +- src/mainboard/intel/strago/devicetree.cb | 2 +- src/mainboard/lenovo/t420s/devicetree.cb | 2 +- src/mainboard/lenovo/t420s/dsdt.asl | 2 +- src/mainboard/lenovo/t430s/devicetree.cb | 2 +- src/mainboard/lenovo/t430s/dsdt.asl | 2 +- src/mainboard/lenovo/t520/devicetree.cb | 2 +- src/mainboard/lenovo/t520/dsdt.asl | 2 +- src/mainboard/lenovo/t530/Kconfig | 1 + src/mainboard/lenovo/t530/devicetree.cb | 2 +- src/mainboard/lenovo/t530/dsdt.asl | 2 +- src/mainboard/lenovo/x201/devicetree.cb | 2 +- src/mainboard/lenovo/x201/dsdt.asl | 2 +- src/mainboard/lenovo/x201/romstage.c | 2 +- src/mainboard/lenovo/x220/devicetree.cb | 2 +- src/mainboard/lenovo/x220/dsdt.asl | 2 +- src/mainboard/lenovo/x230/devicetree.cb | 2 +- src/mainboard/lenovo/x230/dsdt.asl | 2 +- src/mainboard/samsung/lumpy/romstage.c | 2 +- src/mainboard/samsung/stumpy/romstage.c | 2 +- .../intel/sandybridge/romstage_native.c | 2 +- src/soc/intel/baytrail/romstage/romstage.c | 2 +- src/soc/intel/braswell/romstage/romstage.c | 2 +- src/soc/intel/broadwell/romstage/romstage.c | 2 +- .../google/chromeos/vboot2/antirollback.c | 4 +- 73 files changed, 2208 insertions(+), 2331 deletions(-) diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index 6adb8be..c24883b 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -44,7 +44,7 @@ #include "northbridge/intel/haswell/raminit.h" #include "southbridge/intel/lynxpoint/pch.h" #include "southbridge/intel/lynxpoint/me.h" -#include <tpm.h> +#include <tpm/tspi.h> static inline void reset_system(void) { diff --git a/src/drivers/pc80/Kconfig b/src/drivers/pc80/Kconfig index 0ed1ecf..808de17 100644 --- a/src/drivers/pc80/Kconfig +++ b/src/drivers/pc80/Kconfig @@ -22,6 +22,4 @@ config DRIVERS_MC146818 default y if ARCH_X86 select RTC -source src/drivers/pc80/tpm/Kconfig - endif diff --git a/src/drivers/pc80/Makefile.inc b/src/drivers/pc80/Makefile.inc index 0788cc7..838f336 100644 --- a/src/drivers/pc80/Makefile.inc +++ b/src/drivers/pc80/Makefile.inc @@ -13,7 +13,7 @@ romstage-$(CONFIG_DRIVERS_MC146818) += mc146818rtc_early.c romstage-$(CONFIG_SPKMODEM) += spkmodem.c -subdirs-y += tpm vga +subdirs-y += vga cbfs-files-$(CONFIG_HAVE_CMOS_DEFAULT) += cmos.default cmos.default-file = $(CONFIG_CMOS_DEFAULT_FILE):nvramtool diff --git a/src/drivers/pc80/tpm/Kconfig b/src/drivers/pc80/tpm/Kconfig deleted file mode 100644 index f6a7948..0000000 --- a/src/drivers/pc80/tpm/Kconfig +++ /dev/null @@ -1,46 +0,0 @@ -config MAINBOARD_HAS_LPC_TPM - bool - default n - help - Board has TPM support - -config LPC_TPM - bool "Enable TPM support" - depends on MAINBOARD_HAS_LPC_TPM - default n - help - Enable this option to enable LPC TPM support in coreboot. - - If unsure, say N. - -config TPM_TIS_BASE_ADDRESS - hex - default 0xfed40000 - depends on LPC_TPM - help - This can be used to adjust the TPM memory base address. - The default is specified by the TCG PC Client Specific TPM - Interface Specification 1.2 and should not be changed unless - the TPM being used does not conform to TPM TIS 1.2. - -config TPM_INIT_FAILURE_IS_FATAL - bool - default n - depends on LPC_TPM - help - What to do if TPM init failed. If true, force a hard reset, - otherwise just log error message to console. - -config SKIP_TPM_STARTUP_ON_NORMAL_BOOT - bool - default n - depends on LPC_TPM - help - Skip TPM init on normal boot. Useful if payload does TPM init. - -config TPM_DEACTIVATE - bool "Deactivate TPM" - default n - depends on LPC_TPM - help - Deactivate TPM by issuing deactivate command. diff --git a/src/drivers/pc80/tpm/Makefile.inc b/src/drivers/pc80/tpm/Makefile.inc deleted file mode 100644 index 089d067..0000000 --- a/src/drivers/pc80/tpm/Makefile.inc +++ /dev/null @@ -1,3 +0,0 @@ -romstage-$(CONFIG_LPC_TPM) += tpm.c -ramstage-$(CONFIG_LPC_TPM) += tpm.c -romstage-$(CONFIG_LPC_TPM) += romstage.c diff --git a/src/drivers/pc80/tpm/acpi/tpm.asl b/src/drivers/pc80/tpm/acpi/tpm.asl deleted file mode 100644 index ece63e2..0000000 --- a/src/drivers/pc80/tpm/acpi/tpm.asl +++ /dev/null @@ -1,196 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -/* Trusted Platform Module */ - -Device (TPM) -{ - Name (_HID, EISAID ("PNP0C31")) - Name (_CID, 0x310cd041) - Name (_UID, 1) - - Method (_STA, 0) - { -#if CONFIG_LPC_TPM && !CONFIG_TPM_DEACTIVATE - Return (0xf) -#else - Return (0x0) -#endif - } - - Name (IBUF, ResourceTemplate () - { - /* Updated based on TPM interrupt for Locality 0 */ - Interrupt (ResourceConsumer, Edge, ActiveHigh, - Exclusive, , , TIRQ) { 0 } - }) - - Name (RBUF, ResourceTemplate () - { - IO (Decode16, 0x2e, 0x2e, 0x01, 0x02) - Memory32Fixed (ReadWrite, CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) - }) - - Method (_CRS, 0, NotSerialized) - { - OperationRegion (TREG, SystemMemory, - CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) - Field (TREG, ByteAcc, NoLock, Preserve) - { - /* TPM_INT_ENABLE_0 */ - Offset (0x0008), - , 3, - ITPL, 2, /* Interrupt type and polarity */ - - /* TPM_INT_VECTOR_0 */ - Offset (0x000C), - IVEC, 4, /* SERIRQ vector */ - } - - If (LGreater (IVEC, 0)) { - /* Update interrupt vector */ - CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) - Store (IVEC, TVEC) - - /* Update interrupt type and polarity */ - CreateBitField (^IBUF, ^TIRQ._HE, TTYP) - CreateBitField (^IBUF, ^TIRQ._LL, TPOL) - CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) - - If (LEqual (ITPL, 0x0)) { - /* Active-High Level-Triggered Shared */ - Store (Zero, TPOL) - Store (Zero, TTYP) - Store (One, TSHR) - } ElseIf (LEqual (ITPL, 0x1)) { - /* Active-Low Level-Triggered Shared */ - Store (One, TPOL) - Store (Zero, TTYP) - Store (One, TSHR) - } ElseIf (LEqual (ITPL, 0x2)) { - /* Active-High Edge-Triggered Exclusive */ - Store (Zero, TPOL) - Store (One, TTYP) - Store (Zero, TSHR) - } ElseIf (LEqual (ITPL, 0x3)) { - /* Active-Low Edge-Triggered Exclusive */ - Store (One, TPOL) - Store (One, TTYP) - Store (Zero, TSHR) - } - - /* Merge IRQ with base address */ - Return (ConcatenateResTemplate (RBUF, IBUF)) - } Else { - Return (RBUF) - } - } - - /* Dummy _DSM to make Bitlocker work. */ - Method (_DSM, 4, Serialized) - { - /* Physical presence interface. - This is used to submit commands like "Clear TPM" to - be run at next reboot provided that user confirms them. - Spec allows user to cancel all commands and/or - configure BIOS to reject commands. So we pretend that - user did just this: cancelled everything. If user - really wants to clear TPM the only option now is to do it manually - in payload. - */ - If (LEqual (Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653"))) - { - If (LEqual (Arg2, 0)) - { - /* Functions 1-8. */ - Return (Buffer (2) { 0xFF, 0x01 }) - } - - /* Interface version: 1.2 */ - If (LEqual (Arg2, 1)) - { - Return ("1.2") - } - - /* Submit operations: drop on the floor and return success. */ - If (LEqual (Arg2, 2)) - { - Return (0x00) - } - - /* Pending operation: none. */ - If (LEqual (Arg2, 3)) - { - Return (Package (2) { 0, 0 }) - } - - /* Pre-OS transition method: reboot. */ - If (LEqual (Arg2, 4)) - { - Return (2) - } - - /* Operation response: no operation executed. */ - If (LEqual (Arg2, 5)) - { - Return (Package (3) { 0, 0, 0 }) - } - - /* Set preffered user language: deprecated and must return 3 aka "not implemented". */ - If (LEqual (Arg2, 6)) - { - Return (3) - } - - /* Submit operations: deny. */ - If (LEqual (Arg2, 7)) - { - Return (3) - } - - /* All actions are forbidden. */ - If (LEqual (Arg2, 8)) - { - Return (1) - } - - Return (1) - } - - /* Memory clearing on boot: just a dummy. */ - If (LEqual (Arg0, ToUUID("376054ed-cc13-4675-901c-4756d7f2d45d"))) - { - If (LEqual (Arg2, 0)) - { - /* Function 1. */ - Return (Buffer (1) { 3 }) - } - - /* Just return success. */ - If (LEqual (Arg2, 1)) - { - Return (0) - } - - Return (1) - } - - Return (Buffer (1) { 0 }) - } -} diff --git a/src/drivers/pc80/tpm/chip.h b/src/drivers/pc80/tpm/chip.h deleted file mode 100644 index 1a63b98..0000000 --- a/src/drivers/pc80/tpm/chip.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2014 Google Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#ifndef DRIVERS_PC80_TPM_CHIP_H -#define DRIVERS_PC80_TPM_CHIP_H - -typedef struct drivers_pc80_tpm_config { - /* - * TPM Interrupt polarity: - * - * High Level 0 - * Low Level 1 - * Rising Edge 2 - * Falling Edge 3 - */ - u8 irq_polarity; -} tpm_config_t; - -#endif /* DRIVERS_PC80_TPM_CHIP_H */ diff --git a/src/drivers/pc80/tpm/romstage.c b/src/drivers/pc80/tpm/romstage.c deleted file mode 100644 index 96760e2..0000000 --- a/src/drivers/pc80/tpm/romstage.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <types.h> -#include <console/cbmem_console.h> -#include <console/console.h> -#include <arch/acpi.h> -#include <tpm.h> -#include <reset.h> - -//#define EXTRA_LOGGING - -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ - -#define TPM_SUCCESS ((u32)0x00000000) - -#define TPM_E_IOERROR ((u32)0x0000001f) -#define TPM_E_COMMUNICATION_ERROR ((u32)0x00005004) -#define TPM_E_NON_FATAL ((u32)0x00000800) -#define TPM_E_INVALID_POSTINIT ((u32)0x00000026) - -#define TPM_E_NEEDS_SELFTEST ((u32)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((u32)(TPM_E_NON_FATAL + 2)) - -static const struct { - u8 buffer[12]; -} tpm_resume_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2 } -}; - -static const struct { - u8 buffer[12]; -} tpm_startup_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1 } -}; - -static const struct { - u8 buffer[12]; -} tpm_deactivate_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x3 } -}; - -static const struct { - u8 buffer[10]; -} tpm_continueselftest_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53 } -}; - -static inline void FromTpmUint32(const u8 * buffer, u32 * x) -{ - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | (buffer[2] << 8) | buffer[3]); -} - -static inline int TpmCommandSize(const u8 * buffer) -{ - u32 size; - FromTpmUint32(buffer + sizeof(u16), &size); - return (int)size; -} - -/* Gets the code field of a TPM command. */ -static inline int TpmCommandCode(const u8 * buffer) -{ - u32 code; - FromTpmUint32(buffer + sizeof(u16) + sizeof(u32), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int TpmReturnCode(const u8 * buffer) -{ - return TpmCommandCode(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static u32 TlclSendReceiveNoRetry(const u8 * request, - u8 * response, int max_length) -{ - size_t response_length = max_length; - u32 result; - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: command: %x%x %x%x%x%x %x%x%x%x\n", - request[0], request[1], - request[2], request[3], request[4], request[5], - request[6], request[7], request[8], request[9]); -#endif - - result = TPM_SUCCESS; - if (tis_sendrecv - (request, TpmCommandSize(request), response, &response_length)) - result = TPM_E_IOERROR; - - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - printk(BIOS_DEBUG, - "TPM: command 0x%x send/receive failed: 0x%x\n", - TpmCommandCode(request), result); - return TPM_E_COMMUNICATION_ERROR; - } - /* Otherwise, use the result code from the response */ - result = TpmReturnCode(response); - -/* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: response: %x%x %x%x%x%x %x%x%x%x\n", - response[0], response[1], - response[2], response[3], response[4], response[5], - response[6], response[7], response[8], response[9]); -#endif - - printk(BIOS_DEBUG, "TPM: command 0x%x returned 0x%x\n", - TpmCommandCode(request), result); - - return result; -} - -static inline u32 TlclContinueSelfTest(void) -{ - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - printk(BIOS_DEBUG, "TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return TlclSendReceiveNoRetry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. In the firmware, waits for the self test to complete - * if needed. In the host, reports the first error without retries. */ -static u32 TlclSendReceive(const u8 * request, u8 * response, int max_length) -{ - u32 result = TlclSendReceiveNoRetry(request, response, max_length); - /* When compiling for the firmware, hide command failures due to the self - * test not having run or completed. */ - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = TlclContinueSelfTest(); - if (result != TPM_SUCCESS) { - return result; - } -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = TlclSendReceiveNoRetry(request, response, max_length); -#else - /* This needs serious testing. The TPM specification says: - * "iii. The caller MUST wait for the actions of - * TPM_ContinueSelfTest to complete before reissuing the - * command C1." But, if ContinueSelfTest is non-blocking, how - * do we know that the actions have completed other than trying - * again? */ - do { - result = - TlclSendReceiveNoRetry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - - return result; -} - -void init_tpm(int s3resume) -{ - u32 result; - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - - if (CONFIG_TPM_DEACTIVATE) { - printk(BIOS_SPEW, "TPM: Deactivate\n"); - result = TlclSendReceive(tpm_deactivate_cmd.buffer, - response, sizeof(response)); - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - return; - } - - /* Doing TPM startup when we're not coming in on the S3 resume path - * saves us roughly 20ms in boot time only. This does not seem to - * be worth an API change to vboot_reference-firmware right now, so - * let's keep the code around, but just bail out early: - */ - if (s3resume ? CONFIG_NO_TPM_RESUME - : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) - return; - - printk(BIOS_DEBUG, "TPM initialization.\n"); - - printk(BIOS_SPEW, "TPM: Init\n"); - if (tis_init()) - return; - - printk(BIOS_SPEW, "TPM: Open\n"); - if (tis_open()) - return; - - - if (s3resume) { - /* S3 Resume */ - printk(BIOS_SPEW, "TPM: Resume\n"); - result = TlclSendReceive(tpm_resume_cmd.buffer, - response, sizeof(response)); - if (result == TPM_E_INVALID_POSTINIT) { - /* We're on a platform where the TPM maintains power - * in S3, so it's already initialized. - */ - printk(BIOS_DEBUG, "TPM: Already initialized.\n"); - return; - } - } else { - printk(BIOS_SPEW, "TPM: Startup\n"); - result = TlclSendReceive(tpm_startup_cmd.buffer, - response, sizeof(response)); - } - - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - - if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { - printk(BIOS_ERR, "Hard reset!\n"); - post_code(POST_TPM_FAILURE); - if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) - cbmem_dump_console(); - hard_reset(); - } -} diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c deleted file mode 100644 index ba2561d..0000000 --- a/src/drivers/pc80/tpm/tpm.c +++ /dev/null @@ -1,778 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -/* - * The code in this file has been heavily based on the article "Writing a TPM - * Device Driver" published on http://ptgmedia.pearsoncmg.com and the - * submission by Stefan Berger on Qemu-devel mailing list. - * - * One principal difference is that in the simplest config the other than 0 - * TPM localities do not get mapped by some devices (for instance, by - * Infineon slb9635), so this driver provides access to locality 0 only. - */ - -#include <stdlib.h> -#include <string.h> -#include <delay.h> -#include <arch/io.h> -#include <console/console.h> -#include <tpm.h> -#include <arch/early_variables.h> -#include <device/pnp.h> -#include "chip.h" - -#define PREFIX "lpc_tpm: " - -/* coreboot wrapper for TPM driver (start) */ -#define TPM_DEBUG(fmt, args...) \ - if (CONFIG_DEBUG_TPM) { \ - printk(BIOS_DEBUG, PREFIX); \ - printk(BIOS_DEBUG, fmt , ##args); \ - } -#define TPM_DEBUG_IO_READ(reg_, val_) \ - TPM_DEBUG("Read reg 0x%x returns 0x%x\n", (reg_), (val_)) -#define TPM_DEBUG_IO_WRITE(reg_, val_) \ - TPM_DEBUG("Write reg 0x%x with 0x%x\n", (reg_), (val_)) -#define printf(x...) printk(BIOS_ERR, x) - -/* coreboot wrapper for TPM driver (end) */ - -#ifndef CONFIG_TPM_TIS_BASE_ADDRESS -/* Base TPM address standard for x86 systems */ -#define CONFIG_TPM_TIS_BASE_ADDRESS 0xfed40000 -#endif - -/* the macro accepts the locality value, but only locality 0 is operational */ -#define TIS_REG(LOCALITY, REG) \ - (void *)(CONFIG_TPM_TIS_BASE_ADDRESS + (LOCALITY << 12) + REG) - -/* hardware registers' offsets */ -#define TIS_REG_ACCESS 0x0 -#define TIS_REG_INT_ENABLE 0x8 -#define TIS_REG_INT_VECTOR 0xc -#define TIS_REG_INT_STATUS 0x10 -#define TIS_REG_INTF_CAPABILITY 0x14 -#define TIS_REG_STS 0x18 -#define TIS_REG_BURST_COUNT 0x19 -#define TIS_REG_DATA_FIFO 0x24 -#define TIS_REG_DID_VID 0xf00 -#define TIS_REG_RID 0xf04 - -/* Some registers' bit field definitions */ -#define TIS_STS_VALID (1 << 7) /* 0x80 */ -#define TIS_STS_COMMAND_READY (1 << 6) /* 0x40 */ -#define TIS_STS_TPM_GO (1 << 5) /* 0x20 */ -#define TIS_STS_DATA_AVAILABLE (1 << 4) /* 0x10 */ -#define TIS_STS_EXPECT (1 << 3) /* 0x08 */ -#define TIS_STS_RESPONSE_RETRY (1 << 1) /* 0x02 */ - -#define TIS_ACCESS_TPM_REG_VALID_STS (1 << 7) /* 0x80 */ -#define TIS_ACCESS_ACTIVE_LOCALITY (1 << 5) /* 0x20 */ -#define TIS_ACCESS_BEEN_SEIZED (1 << 4) /* 0x10 */ -#define TIS_ACCESS_SEIZE (1 << 3) /* 0x08 */ -#define TIS_ACCESS_PENDING_REQUEST (1 << 2) /* 0x04 */ -#define TIS_ACCESS_REQUEST_USE (1 << 1) /* 0x02 */ -#define TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0) /* 0x01 */ - -/* - * Error value returned if a tpm register does not enter the expected state - * after continuous polling. No actual TPM register reading ever returns ~0, - * so this value is a safe error indication to be mixed with possible status - * register values. - */ -#define TPM_TIMEOUT_ERR (~0) - -/* Error value returned on various TPM driver errors */ -#define TPM_DRIVER_ERR (~0) - - /* 1 second is plenty for anything TPM does.*/ -#define MAX_DELAY_US (1000 * 1000) - -/* - * Structures defined below allow creating descriptions of TPM vendor/device - * ID information for run time discovery. The only device the system knows - * about at this time is Infineon slb9635 - */ -struct device_name { - u16 dev_id; - const char * const dev_name; -}; - -struct vendor_name { - u16 vendor_id; - const char * vendor_name; - const struct device_name* dev_names; -}; - -static const struct device_name atmel_devices[] = { - {0x3204, "AT97SC3204"}, - {0xffff} -}; - -static const struct device_name infineon_devices[] = { - {0x000b, "SLB9635 TT 1.2"}, - {0x001a, "SLB9660 TT 1.2"}, - {0x001b, "SLB9670 TT 1.2"}, - {0xffff} -}; - -static const struct device_name nuvoton_devices[] = { - {0x00fe, "NPCT420AA V2"}, - {0xffff} -}; - -static const struct device_name stmicro_devices[] = { - {0x0000, "ST33ZP24" }, - {0xffff} -}; - -static const struct vendor_name vendor_names[] = { - {0x1114, "Atmel", atmel_devices}, - {0x15d1, "Infineon", infineon_devices}, - {0x1050, "Nuvoton", nuvoton_devices}, - {0x104a, "ST Microelectronics", stmicro_devices}, -}; - -/* - * Cached vendor/device ID pair to indicate that the device has been already - * discovered - */ -static u32 vendor_dev_id CAR_GLOBAL; - -static inline u8 tpm_read_status(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_STS)); - TPM_DEBUG_IO_READ(TIS_REG_STS, value); - return value; -} - -static inline void tpm_write_status(u8 sts, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_STS, sts); - write8(TIS_REG(locality, TIS_REG_STS), sts); -} - -static inline u8 tpm_read_data(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_DATA_FIFO)); - TPM_DEBUG_IO_READ(TIS_REG_DATA_FIFO, value); - return value; -} - -static inline void tpm_write_data(u8 data, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_STS, data); - write8(TIS_REG(locality, TIS_REG_DATA_FIFO), data); -} - -static inline u16 tpm_read_burst_count(int locality) -{ - u16 count; - count = read8(TIS_REG(locality, TIS_REG_BURST_COUNT)); - count |= read8(TIS_REG(locality, TIS_REG_BURST_COUNT + 1)) << 8; - TPM_DEBUG_IO_READ(TIS_REG_BURST_COUNT, count); - return count; -} - -static inline u8 tpm_read_access(int locality) -{ - u8 value = read8(TIS_REG(locality, TIS_REG_ACCESS)); - TPM_DEBUG_IO_READ(TIS_REG_ACCESS, value); - return value; -} - -static inline void tpm_write_access(u8 data, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_ACCESS, data); - write8(TIS_REG(locality, TIS_REG_ACCESS), data); -} - -static inline u32 tpm_read_did_vid(int locality) -{ - u32 value = read32(TIS_REG(locality, TIS_REG_DID_VID)); - TPM_DEBUG_IO_READ(TIS_REG_DID_VID, value); - return value; -} - -static inline void tpm_write_int_vector(int vector, int locality) -{ - TPM_DEBUG_IO_WRITE(TIS_REG_INT_VECTOR, vector); - write8(TIS_REG(locality, TIS_REG_INT_VECTOR), vector & 0xf); -} - -static inline void tpm_write_int_polarity(int polarity, int locality) -{ - /* Set polarity and leave all other bits at 0 */ - u32 value = (polarity & 0x3) << 3; - TPM_DEBUG_IO_WRITE(TIS_REG_INT_ENABLE, value); - write32(TIS_REG(locality, TIS_REG_INT_ENABLE), value); -} - -/* - * tis_wait_sts() - * - * Wait for at least a second for a status to change its state to match the - * expected state. Normally the transition happens within microseconds. - * - * @locality - locality - * @mask - bitmask for the bitfield(s) to watch - * @expected - value the field(s) are supposed to be set to - * - * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. - */ -static int tis_wait_sts(int locality, u8 mask, u8 expected) -{ - u32 time_us = MAX_DELAY_US; - while (time_us > 0) { - u8 value = tpm_read_status(locality); - if ((value & mask) == expected) - return 0; - udelay(1); /* 1 us */ - time_us--; - } - return TPM_TIMEOUT_ERR; -} - -static inline int tis_wait_ready(int locality) -{ - return tis_wait_sts(locality, TIS_STS_COMMAND_READY, - TIS_STS_COMMAND_READY); -} - -static inline int tis_wait_valid(int locality) -{ - return tis_wait_sts(locality, TIS_STS_VALID, TIS_STS_VALID); -} - -static inline int tis_wait_valid_data(int locality) -{ - const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; - return tis_wait_sts(locality, has_data, has_data); -} - -static inline int tis_has_valid_data(int locality) -{ - const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; - return (tpm_read_status(locality) & has_data) == has_data; -} - -static inline int tis_expect_data(int locality) -{ - return !!(tpm_read_status(locality) & TIS_STS_EXPECT); -} - -/* - * tis_wait_access() - * - * Wait for at least a second for a access to change its state to match the - * expected state. Normally the transition happens within microseconds. - * - * @locality - locality - * @mask - bitmask for the bitfield(s) to watch - * @expected - value the field(s) are supposed to be set to - * - * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. - */ -static int tis_wait_access(int locality, u8 mask, u8 expected) -{ - u32 time_us = MAX_DELAY_US; - while (time_us > 0) { - u8 value = tpm_read_access(locality); - if ((value & mask) == expected) - return 0; - udelay(1); /* 1 us */ - time_us--; - } - return TPM_TIMEOUT_ERR; -} - -static inline int tis_wait_dropped_access(int locality) -{ - return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, 0); -} - -static inline int tis_wait_received_access(int locality) -{ - return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, - TIS_ACCESS_ACTIVE_LOCALITY); -} - -static inline int tis_has_access(int locality) -{ - return !!(tpm_read_access(locality) & TIS_ACCESS_ACTIVE_LOCALITY); -} - -static inline void tis_request_access(int locality) -{ - tpm_write_access(TIS_ACCESS_REQUEST_USE, locality); -} - -static inline void tis_drop_access(int locality) -{ - tpm_write_access(TIS_ACCESS_ACTIVE_LOCALITY, locality); -} - -/* - * PC Client Specific TPM Interface Specification section 11.2.12: - * - * Software must be prepared to send two writes of a "1" to command ready - * field: the first to indicate successful read of all the data, thus - * clearing the data from the ReadFIFO and freeing the TPM's resources, - * and the second to indicate to the TPM it is about to send a new command. - * - * In practice not all TPMs behave the same so it is necessary to be - * flexible when trying to set command ready. - * - * Returns 0 on success if the TPM is ready for transactions. - * Returns TPM_TIMEOUT_ERR if the command ready bit does not get set. - */ -static int tis_command_ready(u8 locality) -{ - u32 status; - - /* 1st attempt to set command ready */ - tpm_write_status(TIS_STS_COMMAND_READY, locality); - - /* Wait for response */ - status = tpm_read_status(locality); - - /* Check if command ready is set yet */ - if (status & TIS_STS_COMMAND_READY) - return 0; - - /* 2nd attempt to set command ready */ - tpm_write_status(TIS_STS_COMMAND_READY, locality); - - return tis_wait_ready(locality); -} - -/* - * Probe the TPM device and try determining its manufacturer/device name. - * - * Returns 0 on success (the device is found or was found during an earlier - * invocation) or TPM_DRIVER_ERR if the device is not found. - */ -static u32 tis_probe(void) -{ - const char *device_name = "unknown"; - const char *vendor_name = device_name; - const struct device_name *dev; - u32 didvid; - u16 vid, did; - int i; - - if (car_get_var(vendor_dev_id)) - return 0; /* Already probed. */ - - didvid = tpm_read_did_vid(0); - if (!didvid || (didvid == 0xffffffff)) { - printf("%s: No TPM device found\n", __FUNCTION__); - return TPM_DRIVER_ERR; - } - - car_set_var(vendor_dev_id, didvid); - - vid = didvid & 0xffff; - did = (didvid >> 16) & 0xffff; - for (i = 0; i < ARRAY_SIZE(vendor_names); i++) { - int j = 0; - u16 known_did; - if (vid == vendor_names[i].vendor_id) { - vendor_name = vendor_names[i].vendor_name; - } else { - continue; - } - dev = &vendor_names[i].dev_names[j]; - while ((known_did = dev->dev_id) != 0xffff) { - if (known_did == did) { - device_name = dev->dev_name; - break; - } - j++; - dev = &vendor_names[i].dev_names[j]; - } - break; - } - /* this will have to be converted into debug printout */ - printf("Found TPM %s by %s\n", device_name, vendor_name); - return 0; -} - -/* - * tis_senddata() - * - * send the passed in data to the TPM device. - * - * @data - address of the data to send, byte by byte - * @len - length of the data to send - * - * Returns 0 on success, TPM_DRIVER_ERR on error (in case the device does - * not accept the entire command). - */ -static u32 tis_senddata(const u8 * const data, u32 len) -{ - u32 offset = 0; - u16 burst = 0; - u32 max_cycles = 0; - u8 locality = 0; - - if (tis_wait_ready(locality)) { - printf("%s:%d - failed to get 'command_ready' status\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - burst = tpm_read_burst_count(locality); - - while (1) { - unsigned count; - - /* Wait till the device is ready to accept more data. */ - while (!burst) { - if (max_cycles++ == MAX_DELAY_US) { - printf("%s:%d failed to feed %d bytes of %d\n", - __FILE__, __LINE__, len - offset, len); - return TPM_DRIVER_ERR; - } - udelay(1); - burst = tpm_read_burst_count(locality); - } - - max_cycles = 0; - - /* - * Calculate number of bytes the TPM is ready to accept in one - * shot. - * - * We want to send the last byte outside of the loop (hence - * the -1 below) to make sure that the 'expected' status bit - * changes to zero exactly after the last byte is fed into the - * FIFO. - */ - count = min(burst, len - offset - 1); - while (count--) - tpm_write_data(data[offset++], locality); - - if (tis_wait_valid(locality) || !tis_expect_data(locality)) { - printf("%s:%d TPM command feed overflow\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - burst = tpm_read_burst_count(locality); - if ((offset == (len - 1)) && burst) - /* - * We need to be able to send the last byte to the - * device, so burst size must be nonzero before we - * break out. - */ - break; - } - - /* Send the last byte. */ - tpm_write_data(data[offset++], locality); - - /* - * Verify that TPM does not expect any more data as part of this - * command. - */ - if (tis_wait_valid(locality) || tis_expect_data(locality)) { - printf("%s:%d unexpected TPM status 0x%x\n", - __FILE__, __LINE__, tpm_read_status(locality)); - return TPM_DRIVER_ERR; - } - - /* OK, sitting pretty, let's start the command execution. */ - tpm_write_status(TIS_STS_TPM_GO, locality); - - return 0; -} - -/* - * tis_readresponse() - * - * read the TPM device response after a command was issued. - * - * @buffer - address where to read the response, byte by byte. - * @len - pointer to the size of buffer - * - * On success stores the number of received bytes to len and returns 0. On - * errors (misformatted TPM data or synchronization problems) returns - * TPM_DRIVER_ERR. - */ -static u32 tis_readresponse(u8 *buffer, size_t *len) -{ - u16 burst_count; - u32 offset = 0; - u8 locality = 0; - u32 expected_count = *len; - int max_cycles = 0; - - /* Wait for the TPM to process the command */ - if (tis_wait_valid_data(locality)) { - printf("%s:%d failed processing command\n", __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - do { - while ((burst_count = tpm_read_burst_count(locality)) == 0) { - if (max_cycles++ == MAX_DELAY_US) { - printf("%s:%d TPM stuck on read\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - udelay(1); - } - - max_cycles = 0; - - while (burst_count-- && (offset < expected_count)) { - buffer[offset++] = tpm_read_data(locality); - if (offset == 6) { - /* - * We got the first six bytes of the reply, - * let's figure out how many bytes to expect - * total - it is stored as a 4 byte number in - * network order, starting with offset 2 into - * the body of the reply. - */ - u32 real_length; - memcpy(&real_length, - buffer + 2, - sizeof(real_length)); - expected_count = be32_to_cpu(real_length); - - if ((expected_count < offset) || - (expected_count > *len)) { - printf("%s:%d bad response size %d\n", - __FILE__, __LINE__, - expected_count); - return TPM_DRIVER_ERR; - } - } - } - - /* Wait for the next portion */ - if (tis_wait_valid(locality)) { - printf("%s:%d failed to read response\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - if (offset == expected_count) - break; /* We got all we need */ - - } while (tis_has_valid_data(locality)); - - /* * Make sure we indeed read all there was. */ - if (tis_has_valid_data(locality)) { - printf("%s:%d wrong receive status: %x %d bytes left\n", - __FILE__, __LINE__, tpm_read_status(locality), - tpm_read_burst_count(locality)); - return TPM_DRIVER_ERR; - } - - /* Tell the TPM that we are done. */ - if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) - return TPM_DRIVER_ERR; - - *len = offset; - return 0; -} - -/* - * tis_init() - * - * Initialize the TPM device. Returns 0 on success or TPM_DRIVER_ERR on - * failure (in case device probing did not succeed). - */ -int tis_init(void) -{ - if (tis_probe()) - return TPM_DRIVER_ERR; - return 0; -} - -/* - * tis_open() - * - * Requests access to locality 0 for the caller. After all commands have been - * completed the caller is supposed to call tis_close(). - * - * Returns 0 on success, TPM_DRIVER_ERR on failure. - */ -int tis_open(void) -{ - u8 locality = 0; /* we use locality zero for everything */ - - if (tis_close()) - return TPM_DRIVER_ERR; - - /* now request access to locality */ - tis_request_access(locality); - - /* did we get a lock? */ - if (tis_wait_received_access(locality)) { - printf("%s:%d - failed to lock locality %d\n", - __FILE__, __LINE__, locality); - return TPM_DRIVER_ERR; - } - - /* Certain TPMs seem to need some delay here or they hang... */ - udelay(10); - - if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) - return TPM_DRIVER_ERR; - - return 0; -} - -/* - * tis_close() - * - * terminate the current session with the TPM by releasing the locked - * locality. Returns 0 on success of TPM_DRIVER_ERR on failure (in case lock - * removal did not succeed). - */ -int tis_close(void) -{ - u8 locality = 0; - if (tis_has_access(locality)) { - tis_drop_access(locality); - if (tis_wait_dropped_access(locality)) { - printf("%s:%d - failed to release locality %d\n", - __FILE__, __LINE__, locality); - return TPM_DRIVER_ERR; - } - } - return 0; -} - -/* - * tis_sendrecv() - * - * Send the requested data to the TPM and then try to get its response - * - * @sendbuf - buffer of the data to send - * @send_size size of the data to send - * @recvbuf - memory to save the response to - * @recv_len - pointer to the size of the response buffer - * - * Returns 0 on success (and places the number of response bytes at recv_len) - * or TPM_DRIVER_ERR on failure. - */ -int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, - uint8_t *recvbuf, size_t *recv_len) -{ - if (tis_senddata(sendbuf, send_size)) { - printf("%s:%d failed sending data to TPM\n", - __FILE__, __LINE__); - return TPM_DRIVER_ERR; - } - - return tis_readresponse(recvbuf, recv_len); -} - -#ifdef __RAMSTAGE__ - -/* - * tis_setup_interrupt() - * - * Set up the interrupt vector and polarity for locality 0 and - * disable all interrupts so they are unused in firmware but can - * be enabled by the OS. - * - * The values used here must match what is passed in the TPM ACPI - * device if ACPI is used on the platform. - * - * @vector - TPM interrupt vector - * @polarity - TPM interrupt polarity - * - * Returns 0 on success, TPM_DRIVER_ERR on failure. - */ -static int tis_setup_interrupt(int vector, int polarity) -{ - u8 locality = 0; - int has_access = tis_has_access(locality); - - /* Open connection and request access if not already granted */ - if (!has_access && tis_open() < 0) - return TPM_DRIVER_ERR; - - /* Set TPM interrupt vector */ - tpm_write_int_vector(vector, locality); - - /* Set TPM interupt polarity and disable interrupts */ - tpm_write_int_polarity(polarity, locality); - - /* Close connection if it was opened */ - if (!has_access && tis_close() < 0) - return TPM_DRIVER_ERR; - - return 0; -} - -static void lpc_tpm_read_resources(struct device *dev) -{ - /* Static 5K memory region specified in Kconfig */ - mmio_resource(dev, 0, CONFIG_TPM_TIS_BASE_ADDRESS >> 10, 0x5000 >> 10); -} - -static void lpc_tpm_set_resources(struct device *dev) -{ - tpm_config_t *config = (tpm_config_t *)dev->chip_info; - struct resource *res; - - for (res = dev->resource_list; res; res = res->next) { - if (!(res->flags & IORESOURCE_ASSIGNED)) - continue; - - if (res->flags & IORESOURCE_IRQ) { - /* Set interrupt vector */ - tis_setup_interrupt((int)res->base, - config->irq_polarity); - } else { - continue; - } - - res->flags |= IORESOURCE_STORED; - report_resource_stored(dev, res, " <tpm>"); - } -} - -static struct device_operations lpc_tpm_ops = { - .read_resources = &lpc_tpm_read_resources, - .set_resources = &lpc_tpm_set_resources, -}; - -static struct pnp_info pnp_dev_info[] = { - { .flags = PNP_IRQ0 } -}; - -static void enable_dev(struct device *dev) -{ - pnp_enable_devices(dev, &lpc_tpm_ops, - ARRAY_SIZE(pnp_dev_info), pnp_dev_info); -} - -struct chip_operations drivers_pc80_tpm_ops = { - CHIP_NAME("LPC TPM") - .enable_dev = enable_dev -}; - -#endif /* __RAMSTAGE__ */ diff --git a/src/drivers/tpm/Kconfig b/src/drivers/tpm/Kconfig new file mode 100644 index 0000000..f6a7948 --- /dev/null +++ b/src/drivers/tpm/Kconfig @@ -0,0 +1,46 @@ +config MAINBOARD_HAS_LPC_TPM + bool + default n + help + Board has TPM support + +config LPC_TPM + bool "Enable TPM support" + depends on MAINBOARD_HAS_LPC_TPM + default n + help + Enable this option to enable LPC TPM support in coreboot. + + If unsure, say N. + +config TPM_TIS_BASE_ADDRESS + hex + default 0xfed40000 + depends on LPC_TPM + help + This can be used to adjust the TPM memory base address. + The default is specified by the TCG PC Client Specific TPM + Interface Specification 1.2 and should not be changed unless + the TPM being used does not conform to TPM TIS 1.2. + +config TPM_INIT_FAILURE_IS_FATAL + bool + default n + depends on LPC_TPM + help + What to do if TPM init failed. If true, force a hard reset, + otherwise just log error message to console. + +config SKIP_TPM_STARTUP_ON_NORMAL_BOOT + bool + default n + depends on LPC_TPM + help + Skip TPM init on normal boot. Useful if payload does TPM init. + +config TPM_DEACTIVATE + bool "Deactivate TPM" + default n + depends on LPC_TPM + help + Deactivate TPM by issuing deactivate command. diff --git a/src/drivers/tpm/Makefile.inc b/src/drivers/tpm/Makefile.inc new file mode 100644 index 0000000..c900fe8 --- /dev/null +++ b/src/drivers/tpm/Makefile.inc @@ -0,0 +1,2 @@ +romstage-$(CONFIG_LPC_TPM) += tpm.c +ramstage-$(CONFIG_LPC_TPM) += tpm.c diff --git a/src/drivers/tpm/acpi/tpm.asl b/src/drivers/tpm/acpi/tpm.asl new file mode 100644 index 0000000..ece63e2 --- /dev/null +++ b/src/drivers/tpm/acpi/tpm.asl @@ -0,0 +1,196 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +/* Trusted Platform Module */ + +Device (TPM) +{ + Name (_HID, EISAID ("PNP0C31")) + Name (_CID, 0x310cd041) + Name (_UID, 1) + + Method (_STA, 0) + { +#if CONFIG_LPC_TPM && !CONFIG_TPM_DEACTIVATE + Return (0xf) +#else + Return (0x0) +#endif + } + + Name (IBUF, ResourceTemplate () + { + /* Updated based on TPM interrupt for Locality 0 */ + Interrupt (ResourceConsumer, Edge, ActiveHigh, + Exclusive, , , TIRQ) { 0 } + }) + + Name (RBUF, ResourceTemplate () + { + IO (Decode16, 0x2e, 0x2e, 0x01, 0x02) + Memory32Fixed (ReadWrite, CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) + }) + + Method (_CRS, 0, NotSerialized) + { + OperationRegion (TREG, SystemMemory, + CONFIG_TPM_TIS_BASE_ADDRESS, 0x5000) + Field (TREG, ByteAcc, NoLock, Preserve) + { + /* TPM_INT_ENABLE_0 */ + Offset (0x0008), + , 3, + ITPL, 2, /* Interrupt type and polarity */ + + /* TPM_INT_VECTOR_0 */ + Offset (0x000C), + IVEC, 4, /* SERIRQ vector */ + } + + If (LGreater (IVEC, 0)) { + /* Update interrupt vector */ + CreateField (^IBUF, ^TIRQ._INT, 32, TVEC) + Store (IVEC, TVEC) + + /* Update interrupt type and polarity */ + CreateBitField (^IBUF, ^TIRQ._HE, TTYP) + CreateBitField (^IBUF, ^TIRQ._LL, TPOL) + CreateBitField (^IBUF, ^TIRQ._SHR, TSHR) + + If (LEqual (ITPL, 0x0)) { + /* Active-High Level-Triggered Shared */ + Store (Zero, TPOL) + Store (Zero, TTYP) + Store (One, TSHR) + } ElseIf (LEqual (ITPL, 0x1)) { + /* Active-Low Level-Triggered Shared */ + Store (One, TPOL) + Store (Zero, TTYP) + Store (One, TSHR) + } ElseIf (LEqual (ITPL, 0x2)) { + /* Active-High Edge-Triggered Exclusive */ + Store (Zero, TPOL) + Store (One, TTYP) + Store (Zero, TSHR) + } ElseIf (LEqual (ITPL, 0x3)) { + /* Active-Low Edge-Triggered Exclusive */ + Store (One, TPOL) + Store (One, TTYP) + Store (Zero, TSHR) + } + + /* Merge IRQ with base address */ + Return (ConcatenateResTemplate (RBUF, IBUF)) + } Else { + Return (RBUF) + } + } + + /* Dummy _DSM to make Bitlocker work. */ + Method (_DSM, 4, Serialized) + { + /* Physical presence interface. + This is used to submit commands like "Clear TPM" to + be run at next reboot provided that user confirms them. + Spec allows user to cancel all commands and/or + configure BIOS to reject commands. So we pretend that + user did just this: cancelled everything. If user + really wants to clear TPM the only option now is to do it manually + in payload. + */ + If (LEqual (Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653"))) + { + If (LEqual (Arg2, 0)) + { + /* Functions 1-8. */ + Return (Buffer (2) { 0xFF, 0x01 }) + } + + /* Interface version: 1.2 */ + If (LEqual (Arg2, 1)) + { + Return ("1.2") + } + + /* Submit operations: drop on the floor and return success. */ + If (LEqual (Arg2, 2)) + { + Return (0x00) + } + + /* Pending operation: none. */ + If (LEqual (Arg2, 3)) + { + Return (Package (2) { 0, 0 }) + } + + /* Pre-OS transition method: reboot. */ + If (LEqual (Arg2, 4)) + { + Return (2) + } + + /* Operation response: no operation executed. */ + If (LEqual (Arg2, 5)) + { + Return (Package (3) { 0, 0, 0 }) + } + + /* Set preffered user language: deprecated and must return 3 aka "not implemented". */ + If (LEqual (Arg2, 6)) + { + Return (3) + } + + /* Submit operations: deny. */ + If (LEqual (Arg2, 7)) + { + Return (3) + } + + /* All actions are forbidden. */ + If (LEqual (Arg2, 8)) + { + Return (1) + } + + Return (1) + } + + /* Memory clearing on boot: just a dummy. */ + If (LEqual (Arg0, ToUUID("376054ed-cc13-4675-901c-4756d7f2d45d"))) + { + If (LEqual (Arg2, 0)) + { + /* Function 1. */ + Return (Buffer (1) { 3 }) + } + + /* Just return success. */ + If (LEqual (Arg2, 1)) + { + Return (0) + } + + Return (1) + } + + Return (Buffer (1) { 0 }) + } +} diff --git a/src/drivers/tpm/chip.h b/src/drivers/tpm/chip.h new file mode 100644 index 0000000..1a63b98 --- /dev/null +++ b/src/drivers/tpm/chip.h @@ -0,0 +1,35 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef DRIVERS_PC80_TPM_CHIP_H +#define DRIVERS_PC80_TPM_CHIP_H + +typedef struct drivers_pc80_tpm_config { + /* + * TPM Interrupt polarity: + * + * High Level 0 + * Low Level 1 + * Rising Edge 2 + * Falling Edge 3 + */ + u8 irq_polarity; +} tpm_config_t; + +#endif /* DRIVERS_PC80_TPM_CHIP_H */ diff --git a/src/drivers/tpm/tpm.c b/src/drivers/tpm/tpm.c new file mode 100644 index 0000000..ba2561d --- /dev/null +++ b/src/drivers/tpm/tpm.c @@ -0,0 +1,778 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +/* + * The code in this file has been heavily based on the article "Writing a TPM + * Device Driver" published on http://ptgmedia.pearsoncmg.com and the + * submission by Stefan Berger on Qemu-devel mailing list. + * + * One principal difference is that in the simplest config the other than 0 + * TPM localities do not get mapped by some devices (for instance, by + * Infineon slb9635), so this driver provides access to locality 0 only. + */ + +#include <stdlib.h> +#include <string.h> +#include <delay.h> +#include <arch/io.h> +#include <console/console.h> +#include <tpm.h> +#include <arch/early_variables.h> +#include <device/pnp.h> +#include "chip.h" + +#define PREFIX "lpc_tpm: " + +/* coreboot wrapper for TPM driver (start) */ +#define TPM_DEBUG(fmt, args...) \ + if (CONFIG_DEBUG_TPM) { \ + printk(BIOS_DEBUG, PREFIX); \ + printk(BIOS_DEBUG, fmt , ##args); \ + } +#define TPM_DEBUG_IO_READ(reg_, val_) \ + TPM_DEBUG("Read reg 0x%x returns 0x%x\n", (reg_), (val_)) +#define TPM_DEBUG_IO_WRITE(reg_, val_) \ + TPM_DEBUG("Write reg 0x%x with 0x%x\n", (reg_), (val_)) +#define printf(x...) printk(BIOS_ERR, x) + +/* coreboot wrapper for TPM driver (end) */ + +#ifndef CONFIG_TPM_TIS_BASE_ADDRESS +/* Base TPM address standard for x86 systems */ +#define CONFIG_TPM_TIS_BASE_ADDRESS 0xfed40000 +#endif + +/* the macro accepts the locality value, but only locality 0 is operational */ +#define TIS_REG(LOCALITY, REG) \ + (void *)(CONFIG_TPM_TIS_BASE_ADDRESS + (LOCALITY << 12) + REG) + +/* hardware registers' offsets */ +#define TIS_REG_ACCESS 0x0 +#define TIS_REG_INT_ENABLE 0x8 +#define TIS_REG_INT_VECTOR 0xc +#define TIS_REG_INT_STATUS 0x10 +#define TIS_REG_INTF_CAPABILITY 0x14 +#define TIS_REG_STS 0x18 +#define TIS_REG_BURST_COUNT 0x19 +#define TIS_REG_DATA_FIFO 0x24 +#define TIS_REG_DID_VID 0xf00 +#define TIS_REG_RID 0xf04 + +/* Some registers' bit field definitions */ +#define TIS_STS_VALID (1 << 7) /* 0x80 */ +#define TIS_STS_COMMAND_READY (1 << 6) /* 0x40 */ +#define TIS_STS_TPM_GO (1 << 5) /* 0x20 */ +#define TIS_STS_DATA_AVAILABLE (1 << 4) /* 0x10 */ +#define TIS_STS_EXPECT (1 << 3) /* 0x08 */ +#define TIS_STS_RESPONSE_RETRY (1 << 1) /* 0x02 */ + +#define TIS_ACCESS_TPM_REG_VALID_STS (1 << 7) /* 0x80 */ +#define TIS_ACCESS_ACTIVE_LOCALITY (1 << 5) /* 0x20 */ +#define TIS_ACCESS_BEEN_SEIZED (1 << 4) /* 0x10 */ +#define TIS_ACCESS_SEIZE (1 << 3) /* 0x08 */ +#define TIS_ACCESS_PENDING_REQUEST (1 << 2) /* 0x04 */ +#define TIS_ACCESS_REQUEST_USE (1 << 1) /* 0x02 */ +#define TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0) /* 0x01 */ + +/* + * Error value returned if a tpm register does not enter the expected state + * after continuous polling. No actual TPM register reading ever returns ~0, + * so this value is a safe error indication to be mixed with possible status + * register values. + */ +#define TPM_TIMEOUT_ERR (~0) + +/* Error value returned on various TPM driver errors */ +#define TPM_DRIVER_ERR (~0) + + /* 1 second is plenty for anything TPM does.*/ +#define MAX_DELAY_US (1000 * 1000) + +/* + * Structures defined below allow creating descriptions of TPM vendor/device + * ID information for run time discovery. The only device the system knows + * about at this time is Infineon slb9635 + */ +struct device_name { + u16 dev_id; + const char * const dev_name; +}; + +struct vendor_name { + u16 vendor_id; + const char * vendor_name; + const struct device_name* dev_names; +}; + +static const struct device_name atmel_devices[] = { + {0x3204, "AT97SC3204"}, + {0xffff} +}; + +static const struct device_name infineon_devices[] = { + {0x000b, "SLB9635 TT 1.2"}, + {0x001a, "SLB9660 TT 1.2"}, + {0x001b, "SLB9670 TT 1.2"}, + {0xffff} +}; + +static const struct device_name nuvoton_devices[] = { + {0x00fe, "NPCT420AA V2"}, + {0xffff} +}; + +static const struct device_name stmicro_devices[] = { + {0x0000, "ST33ZP24" }, + {0xffff} +}; + +static const struct vendor_name vendor_names[] = { + {0x1114, "Atmel", atmel_devices}, + {0x15d1, "Infineon", infineon_devices}, + {0x1050, "Nuvoton", nuvoton_devices}, + {0x104a, "ST Microelectronics", stmicro_devices}, +}; + +/* + * Cached vendor/device ID pair to indicate that the device has been already + * discovered + */ +static u32 vendor_dev_id CAR_GLOBAL; + +static inline u8 tpm_read_status(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_STS)); + TPM_DEBUG_IO_READ(TIS_REG_STS, value); + return value; +} + +static inline void tpm_write_status(u8 sts, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_STS, sts); + write8(TIS_REG(locality, TIS_REG_STS), sts); +} + +static inline u8 tpm_read_data(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_DATA_FIFO)); + TPM_DEBUG_IO_READ(TIS_REG_DATA_FIFO, value); + return value; +} + +static inline void tpm_write_data(u8 data, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_STS, data); + write8(TIS_REG(locality, TIS_REG_DATA_FIFO), data); +} + +static inline u16 tpm_read_burst_count(int locality) +{ + u16 count; + count = read8(TIS_REG(locality, TIS_REG_BURST_COUNT)); + count |= read8(TIS_REG(locality, TIS_REG_BURST_COUNT + 1)) << 8; + TPM_DEBUG_IO_READ(TIS_REG_BURST_COUNT, count); + return count; +} + +static inline u8 tpm_read_access(int locality) +{ + u8 value = read8(TIS_REG(locality, TIS_REG_ACCESS)); + TPM_DEBUG_IO_READ(TIS_REG_ACCESS, value); + return value; +} + +static inline void tpm_write_access(u8 data, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_ACCESS, data); + write8(TIS_REG(locality, TIS_REG_ACCESS), data); +} + +static inline u32 tpm_read_did_vid(int locality) +{ + u32 value = read32(TIS_REG(locality, TIS_REG_DID_VID)); + TPM_DEBUG_IO_READ(TIS_REG_DID_VID, value); + return value; +} + +static inline void tpm_write_int_vector(int vector, int locality) +{ + TPM_DEBUG_IO_WRITE(TIS_REG_INT_VECTOR, vector); + write8(TIS_REG(locality, TIS_REG_INT_VECTOR), vector & 0xf); +} + +static inline void tpm_write_int_polarity(int polarity, int locality) +{ + /* Set polarity and leave all other bits at 0 */ + u32 value = (polarity & 0x3) << 3; + TPM_DEBUG_IO_WRITE(TIS_REG_INT_ENABLE, value); + write32(TIS_REG(locality, TIS_REG_INT_ENABLE), value); +} + +/* + * tis_wait_sts() + * + * Wait for at least a second for a status to change its state to match the + * expected state. Normally the transition happens within microseconds. + * + * @locality - locality + * @mask - bitmask for the bitfield(s) to watch + * @expected - value the field(s) are supposed to be set to + * + * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. + */ +static int tis_wait_sts(int locality, u8 mask, u8 expected) +{ + u32 time_us = MAX_DELAY_US; + while (time_us > 0) { + u8 value = tpm_read_status(locality); + if ((value & mask) == expected) + return 0; + udelay(1); /* 1 us */ + time_us--; + } + return TPM_TIMEOUT_ERR; +} + +static inline int tis_wait_ready(int locality) +{ + return tis_wait_sts(locality, TIS_STS_COMMAND_READY, + TIS_STS_COMMAND_READY); +} + +static inline int tis_wait_valid(int locality) +{ + return tis_wait_sts(locality, TIS_STS_VALID, TIS_STS_VALID); +} + +static inline int tis_wait_valid_data(int locality) +{ + const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; + return tis_wait_sts(locality, has_data, has_data); +} + +static inline int tis_has_valid_data(int locality) +{ + const u8 has_data = TIS_STS_DATA_AVAILABLE | TIS_STS_VALID; + return (tpm_read_status(locality) & has_data) == has_data; +} + +static inline int tis_expect_data(int locality) +{ + return !!(tpm_read_status(locality) & TIS_STS_EXPECT); +} + +/* + * tis_wait_access() + * + * Wait for at least a second for a access to change its state to match the + * expected state. Normally the transition happens within microseconds. + * + * @locality - locality + * @mask - bitmask for the bitfield(s) to watch + * @expected - value the field(s) are supposed to be set to + * + * Returns 0 on success or TPM_TIMEOUT_ERR on timeout. + */ +static int tis_wait_access(int locality, u8 mask, u8 expected) +{ + u32 time_us = MAX_DELAY_US; + while (time_us > 0) { + u8 value = tpm_read_access(locality); + if ((value & mask) == expected) + return 0; + udelay(1); /* 1 us */ + time_us--; + } + return TPM_TIMEOUT_ERR; +} + +static inline int tis_wait_dropped_access(int locality) +{ + return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, 0); +} + +static inline int tis_wait_received_access(int locality) +{ + return tis_wait_access(locality, TIS_ACCESS_ACTIVE_LOCALITY, + TIS_ACCESS_ACTIVE_LOCALITY); +} + +static inline int tis_has_access(int locality) +{ + return !!(tpm_read_access(locality) & TIS_ACCESS_ACTIVE_LOCALITY); +} + +static inline void tis_request_access(int locality) +{ + tpm_write_access(TIS_ACCESS_REQUEST_USE, locality); +} + +static inline void tis_drop_access(int locality) +{ + tpm_write_access(TIS_ACCESS_ACTIVE_LOCALITY, locality); +} + +/* + * PC Client Specific TPM Interface Specification section 11.2.12: + * + * Software must be prepared to send two writes of a "1" to command ready + * field: the first to indicate successful read of all the data, thus + * clearing the data from the ReadFIFO and freeing the TPM's resources, + * and the second to indicate to the TPM it is about to send a new command. + * + * In practice not all TPMs behave the same so it is necessary to be + * flexible when trying to set command ready. + * + * Returns 0 on success if the TPM is ready for transactions. + * Returns TPM_TIMEOUT_ERR if the command ready bit does not get set. + */ +static int tis_command_ready(u8 locality) +{ + u32 status; + + /* 1st attempt to set command ready */ + tpm_write_status(TIS_STS_COMMAND_READY, locality); + + /* Wait for response */ + status = tpm_read_status(locality); + + /* Check if command ready is set yet */ + if (status & TIS_STS_COMMAND_READY) + return 0; + + /* 2nd attempt to set command ready */ + tpm_write_status(TIS_STS_COMMAND_READY, locality); + + return tis_wait_ready(locality); +} + +/* + * Probe the TPM device and try determining its manufacturer/device name. + * + * Returns 0 on success (the device is found or was found during an earlier + * invocation) or TPM_DRIVER_ERR if the device is not found. + */ +static u32 tis_probe(void) +{ + const char *device_name = "unknown"; + const char *vendor_name = device_name; + const struct device_name *dev; + u32 didvid; + u16 vid, did; + int i; + + if (car_get_var(vendor_dev_id)) + return 0; /* Already probed. */ + + didvid = tpm_read_did_vid(0); + if (!didvid || (didvid == 0xffffffff)) { + printf("%s: No TPM device found\n", __FUNCTION__); + return TPM_DRIVER_ERR; + } + + car_set_var(vendor_dev_id, didvid); + + vid = didvid & 0xffff; + did = (didvid >> 16) & 0xffff; + for (i = 0; i < ARRAY_SIZE(vendor_names); i++) { + int j = 0; + u16 known_did; + if (vid == vendor_names[i].vendor_id) { + vendor_name = vendor_names[i].vendor_name; + } else { + continue; + } + dev = &vendor_names[i].dev_names[j]; + while ((known_did = dev->dev_id) != 0xffff) { + if (known_did == did) { + device_name = dev->dev_name; + break; + } + j++; + dev = &vendor_names[i].dev_names[j]; + } + break; + } + /* this will have to be converted into debug printout */ + printf("Found TPM %s by %s\n", device_name, vendor_name); + return 0; +} + +/* + * tis_senddata() + * + * send the passed in data to the TPM device. + * + * @data - address of the data to send, byte by byte + * @len - length of the data to send + * + * Returns 0 on success, TPM_DRIVER_ERR on error (in case the device does + * not accept the entire command). + */ +static u32 tis_senddata(const u8 * const data, u32 len) +{ + u32 offset = 0; + u16 burst = 0; + u32 max_cycles = 0; + u8 locality = 0; + + if (tis_wait_ready(locality)) { + printf("%s:%d - failed to get 'command_ready' status\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + burst = tpm_read_burst_count(locality); + + while (1) { + unsigned count; + + /* Wait till the device is ready to accept more data. */ + while (!burst) { + if (max_cycles++ == MAX_DELAY_US) { + printf("%s:%d failed to feed %d bytes of %d\n", + __FILE__, __LINE__, len - offset, len); + return TPM_DRIVER_ERR; + } + udelay(1); + burst = tpm_read_burst_count(locality); + } + + max_cycles = 0; + + /* + * Calculate number of bytes the TPM is ready to accept in one + * shot. + * + * We want to send the last byte outside of the loop (hence + * the -1 below) to make sure that the 'expected' status bit + * changes to zero exactly after the last byte is fed into the + * FIFO. + */ + count = min(burst, len - offset - 1); + while (count--) + tpm_write_data(data[offset++], locality); + + if (tis_wait_valid(locality) || !tis_expect_data(locality)) { + printf("%s:%d TPM command feed overflow\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + burst = tpm_read_burst_count(locality); + if ((offset == (len - 1)) && burst) + /* + * We need to be able to send the last byte to the + * device, so burst size must be nonzero before we + * break out. + */ + break; + } + + /* Send the last byte. */ + tpm_write_data(data[offset++], locality); + + /* + * Verify that TPM does not expect any more data as part of this + * command. + */ + if (tis_wait_valid(locality) || tis_expect_data(locality)) { + printf("%s:%d unexpected TPM status 0x%x\n", + __FILE__, __LINE__, tpm_read_status(locality)); + return TPM_DRIVER_ERR; + } + + /* OK, sitting pretty, let's start the command execution. */ + tpm_write_status(TIS_STS_TPM_GO, locality); + + return 0; +} + +/* + * tis_readresponse() + * + * read the TPM device response after a command was issued. + * + * @buffer - address where to read the response, byte by byte. + * @len - pointer to the size of buffer + * + * On success stores the number of received bytes to len and returns 0. On + * errors (misformatted TPM data or synchronization problems) returns + * TPM_DRIVER_ERR. + */ +static u32 tis_readresponse(u8 *buffer, size_t *len) +{ + u16 burst_count; + u32 offset = 0; + u8 locality = 0; + u32 expected_count = *len; + int max_cycles = 0; + + /* Wait for the TPM to process the command */ + if (tis_wait_valid_data(locality)) { + printf("%s:%d failed processing command\n", __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + do { + while ((burst_count = tpm_read_burst_count(locality)) == 0) { + if (max_cycles++ == MAX_DELAY_US) { + printf("%s:%d TPM stuck on read\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + udelay(1); + } + + max_cycles = 0; + + while (burst_count-- && (offset < expected_count)) { + buffer[offset++] = tpm_read_data(locality); + if (offset == 6) { + /* + * We got the first six bytes of the reply, + * let's figure out how many bytes to expect + * total - it is stored as a 4 byte number in + * network order, starting with offset 2 into + * the body of the reply. + */ + u32 real_length; + memcpy(&real_length, + buffer + 2, + sizeof(real_length)); + expected_count = be32_to_cpu(real_length); + + if ((expected_count < offset) || + (expected_count > *len)) { + printf("%s:%d bad response size %d\n", + __FILE__, __LINE__, + expected_count); + return TPM_DRIVER_ERR; + } + } + } + + /* Wait for the next portion */ + if (tis_wait_valid(locality)) { + printf("%s:%d failed to read response\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + if (offset == expected_count) + break; /* We got all we need */ + + } while (tis_has_valid_data(locality)); + + /* * Make sure we indeed read all there was. */ + if (tis_has_valid_data(locality)) { + printf("%s:%d wrong receive status: %x %d bytes left\n", + __FILE__, __LINE__, tpm_read_status(locality), + tpm_read_burst_count(locality)); + return TPM_DRIVER_ERR; + } + + /* Tell the TPM that we are done. */ + if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) + return TPM_DRIVER_ERR; + + *len = offset; + return 0; +} + +/* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or TPM_DRIVER_ERR on + * failure (in case device probing did not succeed). + */ +int tis_init(void) +{ + if (tis_probe()) + return TPM_DRIVER_ERR; + return 0; +} + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. After all commands have been + * completed the caller is supposed to call tis_close(). + * + * Returns 0 on success, TPM_DRIVER_ERR on failure. + */ +int tis_open(void) +{ + u8 locality = 0; /* we use locality zero for everything */ + + if (tis_close()) + return TPM_DRIVER_ERR; + + /* now request access to locality */ + tis_request_access(locality); + + /* did we get a lock? */ + if (tis_wait_received_access(locality)) { + printf("%s:%d - failed to lock locality %d\n", + __FILE__, __LINE__, locality); + return TPM_DRIVER_ERR; + } + + /* Certain TPMs seem to need some delay here or they hang... */ + udelay(10); + + if (tis_command_ready(locality) == TPM_TIMEOUT_ERR) + return TPM_DRIVER_ERR; + + return 0; +} + +/* + * tis_close() + * + * terminate the current session with the TPM by releasing the locked + * locality. Returns 0 on success of TPM_DRIVER_ERR on failure (in case lock + * removal did not succeed). + */ +int tis_close(void) +{ + u8 locality = 0; + if (tis_has_access(locality)) { + tis_drop_access(locality); + if (tis_wait_dropped_access(locality)) { + printf("%s:%d - failed to release locality %d\n", + __FILE__, __LINE__, locality); + return TPM_DRIVER_ERR; + } + } + return 0; +} + +/* + * tis_sendrecv() + * + * Send the requested data to the TPM and then try to get its response + * + * @sendbuf - buffer of the data to send + * @send_size size of the data to send + * @recvbuf - memory to save the response to + * @recv_len - pointer to the size of the response buffer + * + * Returns 0 on success (and places the number of response bytes at recv_len) + * or TPM_DRIVER_ERR on failure. + */ +int tis_sendrecv(const uint8_t *sendbuf, size_t send_size, + uint8_t *recvbuf, size_t *recv_len) +{ + if (tis_senddata(sendbuf, send_size)) { + printf("%s:%d failed sending data to TPM\n", + __FILE__, __LINE__); + return TPM_DRIVER_ERR; + } + + return tis_readresponse(recvbuf, recv_len); +} + +#ifdef __RAMSTAGE__ + +/* + * tis_setup_interrupt() + * + * Set up the interrupt vector and polarity for locality 0 and + * disable all interrupts so they are unused in firmware but can + * be enabled by the OS. + * + * The values used here must match what is passed in the TPM ACPI + * device if ACPI is used on the platform. + * + * @vector - TPM interrupt vector + * @polarity - TPM interrupt polarity + * + * Returns 0 on success, TPM_DRIVER_ERR on failure. + */ +static int tis_setup_interrupt(int vector, int polarity) +{ + u8 locality = 0; + int has_access = tis_has_access(locality); + + /* Open connection and request access if not already granted */ + if (!has_access && tis_open() < 0) + return TPM_DRIVER_ERR; + + /* Set TPM interrupt vector */ + tpm_write_int_vector(vector, locality); + + /* Set TPM interupt polarity and disable interrupts */ + tpm_write_int_polarity(polarity, locality); + + /* Close connection if it was opened */ + if (!has_access && tis_close() < 0) + return TPM_DRIVER_ERR; + + return 0; +} + +static void lpc_tpm_read_resources(struct device *dev) +{ + /* Static 5K memory region specified in Kconfig */ + mmio_resource(dev, 0, CONFIG_TPM_TIS_BASE_ADDRESS >> 10, 0x5000 >> 10); +} + +static void lpc_tpm_set_resources(struct device *dev) +{ + tpm_config_t *config = (tpm_config_t *)dev->chip_info; + struct resource *res; + + for (res = dev->resource_list; res; res = res->next) { + if (!(res->flags & IORESOURCE_ASSIGNED)) + continue; + + if (res->flags & IORESOURCE_IRQ) { + /* Set interrupt vector */ + tis_setup_interrupt((int)res->base, + config->irq_polarity); + } else { + continue; + } + + res->flags |= IORESOURCE_STORED; + report_resource_stored(dev, res, " <tpm>"); + } +} + +static struct device_operations lpc_tpm_ops = { + .read_resources = &lpc_tpm_read_resources, + .set_resources = &lpc_tpm_set_resources, +}; + +static struct pnp_info pnp_dev_info[] = { + { .flags = PNP_IRQ0 } +}; + +static void enable_dev(struct device *dev) +{ + pnp_enable_devices(dev, &lpc_tpm_ops, + ARRAY_SIZE(pnp_dev_info), pnp_dev_info); +} + +struct chip_operations drivers_pc80_tpm_ops = { + CHIP_NAME("LPC TPM") + .enable_dev = enable_dev +}; + +#endif /* __RAMSTAGE__ */ diff --git a/src/include/antirollback.h b/src/include/antirollback.h index 5ba36f7..9d3c3fd 100644 --- a/src/include/antirollback.h +++ b/src/include/antirollback.h @@ -9,7 +9,7 @@ #ifndef ANTIROLLBACK_H_ #define ANTIROLLBACK_H_ -#include "tpm_lite/tss_constants.h" +#include <tpm/tss_constants.h> struct vb2_context; enum vb2_pcr_digest; diff --git a/src/include/tpm.h b/src/include/tpm.h deleted file mode 100644 index 9b4db4a..0000000 --- a/src/include/tpm.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2011 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#ifndef TPM_H_ -#define TPM_H_ - -#include <stddef.h> -#include <stdint.h> - -/* - * tis_init() - * - * Initialize the TPM device. Returns 0 on success or -1 on - * failure (in case device probing did not succeed). - */ -int tis_init(void); - -/* - * tis_open() - * - * Requests access to locality 0 for the caller. After all commands have been - * completed the caller is supposed to call tis_close(). - * - * Returns 0 on success, -1 on failure. - */ -int tis_open(void); - -/* - * tis_close() - * - * terminate the currect session with the TPM by releasing the locked - * locality. Returns 0 on success of -1 on failure (in case lock - * removal did not succeed). - */ -int tis_close(void); - -/* - * tis_sendrecv() - * - * Send the requested data to the TPM and then try to get its response - * - * @sendbuf - buffer of the data to send - * @send_size size of the data to send - * @recvbuf - memory to save the response to - * @recv_len - pointer to the size of the response buffer - * - * Returns 0 on success (and places the number of response bytes at recv_len) - * or -1 on failure. - */ -int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, - size_t *recv_len); - -void init_tpm(int s3resume); - -#endif /* TPM_H_ */ diff --git a/src/include/tpm/tpm.h b/src/include/tpm/tpm.h new file mode 100644 index 0000000..8923349 --- /dev/null +++ b/src/include/tpm/tpm.h @@ -0,0 +1,69 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2011 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef PC80_TPM_H +#define PC80_TPM_H + +#include <stddef.h> +#include <stdint.h> + +/* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or -1 on + * failure (in case device probing did not succeed). + */ +int tis_init(void); + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. After all commands have been + * completed the caller is supposed to call tis_close(). + * + * Returns 0 on success, -1 on failure. + */ +int tis_open(void); + +/* + * tis_close() + * + * terminate the currect session with the TPM by releasing the locked + * locality. Returns 0 on success of -1 on failure (in case lock + * removal did not succeed). + */ +int tis_close(void); + +/* + * tis_sendrecv() + * + * Send the requested data to the TPM and then try to get its response + * + * @sendbuf - buffer of the data to send + * @send_size size of the data to send + * @recvbuf - memory to save the response to + * @recv_len - pointer to the size of the response buffer + * + * Returns 0 on success (and places the number of response bytes at recv_len) + * or -1 on failure. + */ +int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, + size_t *recv_len); + +#endif /* PC80_TPM_H */ \ No newline at end of file diff --git a/src/include/tpm/tspi.h b/src/include/tpm/tspi.h new file mode 100644 index 0000000..8e1b5f0 --- /dev/null +++ b/src/include/tpm/tspi.h @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef TPM_TSPI_H +#define TPM_TSPI_H + +/** + * TSPI Implementation for coreboot without vboot2 + */ +void init_tpm(int s3resume); + + +#endif /* TPM_TSPI_H */ \ No newline at end of file diff --git a/src/include/tpm/tss.h b/src/include/tpm/tss.h new file mode 100644 index 0000000..c6c4b1a --- /dev/null +++ b/src/include/tpm/tss.h @@ -0,0 +1,136 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* + * TPM Lightweight Command Library. + * + * A low-level library for interfacing to TPM hardware or an emulator. + */ + +#ifndef TPM_TSS_H +#define TPM_TSS_H + +#include "tss_constants.h" + +/*****************************************************************************/ +/* Functions implemented in tlcl.c */ + +/** + * Call this first. Returns 0 if success, nonzero if error. + */ +uint32_t tlcl_lib_init(void); + +/** + * Perform a raw TPM request/response transaction. + */ +uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, + int max_length); + +/* Commands */ + +/** + * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for + * success). + */ +uint32_t tlcl_startup(void); + +/** + * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned + * (0 for success). + */ +uint32_t tlcl_resume(void); + +/** + * Run the self test. + * + * Note---this is synchronous. To run this in parallel with other firmware, + * use ContinueSelfTest(). The TPM error code is returned. + */ +uint32_t tlcl_self_test_full(void); + +/** + * Run the self test in the background. + */ +uint32_t tlcl_continue_self_test(void); + +/** + * Define a space with permission [perm]. [index] is the index for the space, + * [size] the usable data size. The TPM error code is returned. + */ +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); + +/** + * Write [length] bytes of [data] to space at [index]. The TPM error code is + * returned. + */ +uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); + +/** + * Read [length] bytes from space at [index] into [data]. The TPM error code + * is returned. + */ +uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); + +/** + * Assert physical presence in software. The TPM error code is returned. + */ +uint32_t tlcl_assert_physical_presence(void); + +/** + * Enable the physical presence command. The TPM error code is returned. + */ +uint32_t tlcl_physical_presence_cmd_enable(void); + +/** + * Finalize the physical presence settings: sofware PP is enabled, hardware PP + * is disabled, and the lifetime lock is set. The TPM error code is returned. + */ +uint32_t tlcl_finalize_physical_presence(void); + +/** + * Set the nvLocked bit. The TPM error code is returned. + */ +uint32_t tlcl_set_nv_locked(void); + +/** + * Issue a ForceClear. The TPM error code is returned. + */ +uint32_t tlcl_force_clear(void); + +/** + * Issue a PhysicalEnable. The TPM error code is returned. + */ +uint32_t tlcl_set_enable(void); + +/** + * Issue a SetDeactivated. Pass 0 to activate. Returns result code. + */ +uint32_t tlcl_set_deactivated(uint8_t flag); + +/** + * Get flags of interest. Pointers for flags you aren't interested in may + * be NULL. The TPM error code is returned. + */ +uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, + uint8_t *nvlocked); + +/** + * Set the bGlobalLock flag, which only a reboot can clear. The TPM error + * code is returned. + */ +uint32_t tlcl_set_global_lock(void); + +/** + * Perform a TPM_Extend. + */ +uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, + uint8_t *out_digest); + +/** + * Get the entire set of permanent flags. + */ +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); + +#endif \ No newline at end of file diff --git a/src/include/tpm/tss_constants.h b/src/include/tpm/tss_constants.h new file mode 100644 index 0000000..9cfbe2d --- /dev/null +++ b/src/include/tpm/tss_constants.h @@ -0,0 +1,98 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Some TPM constants and type definitions for standalone compilation for use + * in the firmware + */ + +#ifndef TPM_TSS_CONSTANTS_H +#define TPM_TSS_CONSTANTS_H + +#include <stdint.h> + +#define TPM_MAX_COMMAND_SIZE 4096 +#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ +#define TPM_PUBEK_SIZE 256 +#define TPM_PCR_DIGEST 20 + +#define TPM_E_NON_FATAL 0x800 + +#define TPM_SUCCESS ((uint32_t)0x00000000) + +#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) +#define TPM_E_BADINDEX ((uint32_t)0x00000002) +#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) +#define TPM_E_IOERROR ((uint32_t)0x0000001f) +#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) +#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) +#define TPM_E_OWNER_SET ((uint32_t)0x00000014) + +#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) +#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) + +#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ +#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ +#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ +#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ +#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ +#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ +#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ +#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ +#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ +#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ +#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ + +#define TPM_NV_INDEX0 ((uint32_t)0x00000000) +#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) +#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) +#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) +#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) +#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) + +#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) +#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) +#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) + +#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) +#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) +#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) + +typedef uint8_t TSS_BOOL; +typedef uint16_t TPM_STRUCTURE_TAG; + +typedef struct tdTPM_PERMANENT_FLAGS +{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL disable; + TSS_BOOL ownership; + TSS_BOOL deactivated; + TSS_BOOL readPubek; + TSS_BOOL disableOwnerClear; + TSS_BOOL allowMaintenance; + TSS_BOOL physicalPresenceLifetimeLock; + TSS_BOOL physicalPresenceHWEnable; + TSS_BOOL physicalPresenceCMDEnable; + TSS_BOOL CEKPUsed; + TSS_BOOL TPMpost; + TSS_BOOL TPMpostLock; + TSS_BOOL FIPS; + TSS_BOOL Operator; + TSS_BOOL enableRevokeEK; + TSS_BOOL nvLocked; + TSS_BOOL readSRKPub; + TSS_BOOL tpmEstablished; + TSS_BOOL maintenanceDone; + TSS_BOOL disableFullDALogicInfo; +} TPM_PERMANENT_FLAGS; + +typedef struct tdTPM_STCLEAR_FLAGS{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL deactivated; + TSS_BOOL disableForceClear; + TSS_BOOL physicalPresence; + TSS_BOOL physicalPresenceLock; + TSS_BOOL bGlobalLock; +} TPM_STCLEAR_FLAGS; + +#endif /* TPM_TSS_CONSTANTS_H */ \ No newline at end of file diff --git a/src/include/tpm_lite/tlcl.h b/src/include/tpm_lite/tlcl.h deleted file mode 100644 index 7724592..0000000 --- a/src/include/tpm_lite/tlcl.h +++ /dev/null @@ -1,137 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* - * TPM Lightweight Command Library. - * - * A low-level library for interfacing to TPM hardware or an emulator. - */ - -#ifndef TPM_LITE_TLCL_H_ -#define TPM_LITE_TLCL_H_ -#include <stdint.h> - -#include "tss_constants.h" - -/*****************************************************************************/ -/* Functions implemented in tlcl.c */ - -/** - * Call this first. Returns 0 if success, nonzero if error. - */ -uint32_t tlcl_lib_init(void); - -/** - * Perform a raw TPM request/response transaction. - */ -uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, - int max_length); - -/* Commands */ - -/** - * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for - * success). - */ -uint32_t tlcl_startup(void); - -/** - * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned - * (0 for success). - */ -uint32_t tlcl_resume(void); - -/** - * Run the self test. - * - * Note---this is synchronous. To run this in parallel with other firmware, - * use ContinueSelfTest(). The TPM error code is returned. - */ -uint32_t tlcl_self_test_full(void); - -/** - * Run the self test in the background. - */ -uint32_t tlcl_continue_self_test(void); - -/** - * Define a space with permission [perm]. [index] is the index for the space, - * [size] the usable data size. The TPM error code is returned. - */ -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); - -/** - * Write [length] bytes of [data] to space at [index]. The TPM error code is - * returned. - */ -uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); - -/** - * Read [length] bytes from space at [index] into [data]. The TPM error code - * is returned. - */ -uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); - -/** - * Assert physical presence in software. The TPM error code is returned. - */ -uint32_t tlcl_assert_physical_presence(void); - -/** - * Enable the physical presence command. The TPM error code is returned. - */ -uint32_t tlcl_physical_presence_cmd_enable(void); - -/** - * Finalize the physical presence settings: sofware PP is enabled, hardware PP - * is disabled, and the lifetime lock is set. The TPM error code is returned. - */ -uint32_t tlcl_finalize_physical_presence(void); - -/** - * Set the nvLocked bit. The TPM error code is returned. - */ -uint32_t tlcl_set_nv_locked(void); - -/** - * Issue a ForceClear. The TPM error code is returned. - */ -uint32_t tlcl_force_clear(void); - -/** - * Issue a PhysicalEnable. The TPM error code is returned. - */ -uint32_t tlcl_set_enable(void); - -/** - * Issue a SetDeactivated. Pass 0 to activate. Returns result code. - */ -uint32_t tlcl_set_deactivated(uint8_t flag); - -/** - * Get flags of interest. Pointers for flags you aren't interested in may - * be NULL. The TPM error code is returned. - */ -uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, - uint8_t *nvlocked); - -/** - * Set the bGlobalLock flag, which only a reboot can clear. The TPM error - * code is returned. - */ -uint32_t tlcl_set_global_lock(void); - -/** - * Perform a TPM_Extend. - */ -uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, - uint8_t *out_digest); - -/** - * Get the entire set of permanent flags. - */ -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); - -#endif /* TPM_LITE_TLCL_H_ */ diff --git a/src/include/tpm_lite/tss_constants.h b/src/include/tpm_lite/tss_constants.h deleted file mode 100644 index 883a5ad..0000000 --- a/src/include/tpm_lite/tss_constants.h +++ /dev/null @@ -1,96 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Some TPM constants and type definitions for standalone compilation for use - * in the firmware - */ -#ifndef VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#define VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#include <stdint.h> - -#define TPM_MAX_COMMAND_SIZE 4096 -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ -#define TPM_PUBEK_SIZE 256 -#define TPM_PCR_DIGEST 20 - -#define TPM_E_NON_FATAL 0x800 - -#define TPM_SUCCESS ((uint32_t)0x00000000) - -#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) -#define TPM_E_BADINDEX ((uint32_t)0x00000002) -#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) -#define TPM_E_IOERROR ((uint32_t)0x0000001f) -#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) -#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) -#define TPM_E_OWNER_SET ((uint32_t)0x00000014) - -#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) - -#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ -#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ -#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ -#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ -#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ -#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ -#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ -#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ -#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ -#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ -#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ - -#define TPM_NV_INDEX0 ((uint32_t)0x00000000) -#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) -#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) -#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) -#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) -#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) - -#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) -#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) -#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) - -#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) -#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) -#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) - -typedef uint8_t TSS_BOOL; -typedef uint16_t TPM_STRUCTURE_TAG; - -typedef struct tdTPM_PERMANENT_FLAGS -{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL disable; - TSS_BOOL ownership; - TSS_BOOL deactivated; - TSS_BOOL readPubek; - TSS_BOOL disableOwnerClear; - TSS_BOOL allowMaintenance; - TSS_BOOL physicalPresenceLifetimeLock; - TSS_BOOL physicalPresenceHWEnable; - TSS_BOOL physicalPresenceCMDEnable; - TSS_BOOL CEKPUsed; - TSS_BOOL TPMpost; - TSS_BOOL TPMpostLock; - TSS_BOOL FIPS; - TSS_BOOL Operator; - TSS_BOOL enableRevokeEK; - TSS_BOOL nvLocked; - TSS_BOOL readSRKPub; - TSS_BOOL tpmEstablished; - TSS_BOOL maintenanceDone; - TSS_BOOL disableFullDALogicInfo; -} TPM_PERMANENT_FLAGS; - -typedef struct tdTPM_STCLEAR_FLAGS{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL deactivated; - TSS_BOOL disableForceClear; - TSS_BOOL physicalPresence; - TSS_BOOL physicalPresenceLock; - TSS_BOOL bGlobalLock; -} TPM_STCLEAR_FLAGS; - -#endif /* VBOOT_REFERENCE_TSS_CONSTANTS_H_ */ diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 8597667..140421e 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -16,7 +16,7 @@ # along with this program; if not, write to the Free Software # Foundation, Inc. # -subdirs-y += loaders +subdirs-y += loaders tpm bootblock-y += assets.c bootblock-y += prog_loaders.c @@ -54,12 +54,6 @@ verstage-y += boot_device.c verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c -ifeq ($(MOCK_TPM),1) -libverstage-y += mocked_tlcl.c -else -libverstage-y += tlcl.c -endif - verstage-$(CONFIG_GENERIC_UDELAY) += timer.c verstage-$(CONFIG_GENERIC_GPIO_LIB) += gpio.c verstage-y += mem_pool.c diff --git a/src/lib/mocked_tlcl.c b/src/lib/mocked_tlcl.c deleted file mode 100644 index c5c12bf..0000000 --- a/src/lib/mocked_tlcl.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <tpm_lite/tlcl.h> - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -uint32_t tlcl_lib_init(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_resume(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_continue_self_test(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_global_lock(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} diff --git a/src/lib/tlcl.c b/src/lib/tlcl.c deleted file mode 100644 index ccf4e80..0000000 --- a/src/lib/tlcl.c +++ /dev/null @@ -1,327 +0,0 @@ -/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* A lightweight TPM command library. - * - * The general idea is that TPM commands are array of bytes whose - * fields are mostly compile-time constant. The goal is to build much - * of the commands at compile time (or build time) and change some of - * the fields at run time as needed. The code in - * utility/tlcl_generator.c builds structures containing the commands, - * as well as the offsets of the fields that need to be set at run - * time. - */ - -#include <assert.h> -#include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm.h> -#include <vb2_api.h> -#include "tlcl_internal.h" -#include "tlcl_structures.h" - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -static int tpm_send_receive(const uint8_t *request, - uint32_t request_length, - uint8_t *response, - uint32_t *response_length) -{ - size_t len = *response_length; - if (tis_sendrecv(request, request_length, response, &len)) - return VB2_ERROR_UNKNOWN; - /* check 64->32bit overflow and (re)check response buffer overflow */ - if (len > *response_length) - return VB2_ERROR_UNKNOWN; - *response_length = len; - return VB2_SUCCESS; -} - -/* Sets the size field of a TPM command. */ -static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { - to_tpm_uint32(buffer + sizeof(uint16_t), size); -} - -/* Gets the size field of a TPM command. */ -__attribute__((unused)) -static inline int tpm_command_size(const uint8_t* buffer) { - uint32_t size; - from_tpm_uint32(buffer + sizeof(uint16_t), &size); - return (int) size; -} - -/* Gets the code field of a TPM command. */ -static inline int tpm_command_code(const uint8_t* buffer) { - uint32_t code; - from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int tpm_return_code(const uint8_t* buffer) { - return tpm_command_code(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, - uint8_t* response, int max_length) { - uint32_t response_length = max_length; - uint32_t result; - - result = tpm_send_receive(request, tpm_command_size(request), - response, &response_length); - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", - tpm_command_code(request), result); - return result; - } - /* Otherwise, use the result code from the response */ - result = tpm_return_code(response); - - /* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - - VBDEBUG("TPM: command 0x%x returned 0x%x\n", - tpm_command_code(request), result); - -return result; -} - - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. Waits for the self test to complete if needed. */ -uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, - int max_length) { - uint32_t result = tlcl_send_receive_no_retry(request, response, - max_length); - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = tlcl_continue_self_test(); - if (result != TPM_SUCCESS) - return result; -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = tlcl_send_receive_no_retry(request, response, - max_length); -#else - /* This needs serious testing. The TPM specification says: "iii. - * The caller MUST wait for the actions of TPM_ContinueSelfTest - * to complete before reissuing the command C1." But, if - * ContinueSelfTest is non-blocking, how do we know that the - * actions have completed other than trying again? */ - do { - result = tlcl_send_receive_no_retry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - return result; -} - -/* Sends a command and returns the error code. */ -static uint32_t send(const uint8_t* command) { - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - return tlcl_send_receive(command, response, sizeof(response)); -} - -/* Exported functions. */ - -uint32_t tlcl_lib_init(void) { - if (tis_init()) - return VB2_ERROR_UNKNOWN; - if (tis_open()) - return VB2_ERROR_UNKNOWN; - return VB2_SUCCESS; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("TPM: Startup\n"); - return send(tpm_startup_cmd.buffer); -} - -uint32_t tlcl_resume(void) { - VBDEBUG("TPM: Resume\n"); - return send(tpm_resume_cmd.buffer); -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("TPM: Self test full\n"); - return send(tpm_selftestfull_cmd.buffer); -} - -uint32_t tlcl_continue_self_test(void) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - VBDEBUG("TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - struct s_tpm_nv_definespace_cmd cmd; - VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); - memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); - return send(cmd.buffer); -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - struct s_tpm_nv_write_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - const int total_length = - kTpmRequestHeaderLength + kWriteInfoLength + length; - - VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); - assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); - set_tpm_command_size(cmd.buffer, total_length); - - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); - memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); - - return tlcl_send_receive(cmd.buffer, response, sizeof(response)); -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - struct s_tpm_nv_read_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t result_length; - uint32_t result; - - VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result == TPM_SUCCESS && length > 0) { - uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; - from_tpm_uint32(nv_read_cursor, &result_length); - nv_read_cursor += sizeof(uint32_t); - memcpy(data, nv_read_cursor, result_length); - } - - return result; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("TPM: Asserting physical presence\n"); - return send(tpm_ppassert_cmd.buffer); -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("TPM: Enable the physical presence command\n"); - return send(tpm_ppenable_cmd.buffer); -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); - return send(tpm_finalizepp_cmd.buffer); -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("TPM: Set NV locked\n"); - return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("TPM: Force clear\n"); - return send(tpm_forceclear_cmd.buffer); -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("TPM: Enabling TPM\n"); - return send(tpm_physicalenable_cmd.buffer); -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - struct s_tpm_physicalsetdeactivated_cmd cmd; - VBDEBUG("TPM: SetDeactivated(%d)\n", flag); - memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); - *(cmd.buffer + cmd.deactivated) = flag; - return send(cmd.buffer); -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t size; - uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, - sizeof(response)); - if (result != TPM_SUCCESS) - return result; - from_tpm_uint32(response + kTpmResponseHeaderLength, &size); - assert(size == sizeof(TPM_PERMANENT_FLAGS)); - memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), - sizeof(TPM_PERMANENT_FLAGS)); - return result; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - TPM_PERMANENT_FLAGS pflags; - uint32_t result = tlcl_get_permanent_flags(&pflags); - if (result == TPM_SUCCESS) { - if (disable) - *disable = pflags.disable; - if (deactivated) - *deactivated = pflags.deactivated; - if (nvlocked) - *nvlocked = pflags.nvLocked; - VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", - pflags.disable, pflags.deactivated, pflags.nvLocked); - } - return result; -} - -uint32_t tlcl_set_global_lock(void) -{ - uint32_t x; - VBDEBUG("TPM: Set global lock\n"); - return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - struct s_tpm_extend_cmd cmd; - uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; - uint32_t result; - - memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); - memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result != TPM_SUCCESS) - return result; - - if (out_digest) - memcpy(out_digest, response + kTpmResponseHeaderLength, - kPcrDigestLength); - return result; -} diff --git a/src/lib/tlcl_internal.h b/src/lib/tlcl_internal.h deleted file mode 100644 index 8261b0d..0000000 --- a/src/lib/tlcl_internal.h +++ /dev/null @@ -1,61 +0,0 @@ -/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef TPM_LITE_TLCL_INTERNAL_H_ -#define TPM_LITE_TLCL_INTERNAL_H_ - -/* - * These numbers derive from adding the sizes of command fields as shown in the - * TPM commands manual. - */ -#define kTpmRequestHeaderLength 10 -#define kTpmResponseHeaderLength 10 -#define kTpmReadInfoLength 12 -#define kEncAuthLength 20 -#define kPcrDigestLength 20 - - -/* - * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM - * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command - * buffer into a variable. - */ -__attribute__((unused)) -static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { - buffer[0] = (uint8_t)(x >> 24); - buffer[1] = (uint8_t)((x >> 16) & 0xff); - buffer[2] = (uint8_t)((x >> 8) & 0xff); - buffer[3] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | - (buffer[2] << 8) | - buffer[3]); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { - buffer[0] = (uint8_t)(x >> 8); - buffer[1] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { - *x = (buffer[0] << 8) | buffer[1]; -} - -#endif /* TPM_LITE_TLCL_INTERNAL_H_ */ diff --git a/src/lib/tlcl_structures.h b/src/lib/tlcl_structures.h deleted file mode 100644 index 36c1bb9..0000000 --- a/src/lib/tlcl_structures.h +++ /dev/null @@ -1,138 +0,0 @@ -/* This file is automatically generated */ - -const struct s_tpm_extend_cmd{ - uint8_t buffer[34]; - uint16_t pcrNum; - uint16_t inDigest; -} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, -10, 14, }; - -const struct s_tpm_get_random_cmd{ - uint8_t buffer[14]; - uint16_t bytesRequested; -} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, -10, }; - -const struct s_tpm_getownership_cmd{ - uint8_t buffer[22]; -} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, -}; - -const struct s_tpm_getpermissions_cmd{ - uint8_t buffer[22]; - uint16_t index; -} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, -18, }; - -const struct s_tpm_getstclearflags_cmd{ - uint8_t buffer[22]; -} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, -}; - -const struct s_tpm_getflags_cmd{ - uint8_t buffer[22]; -} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, -}; - -const struct s_tpm_physicalsetdeactivated_cmd{ - uint8_t buffer[11]; - uint16_t deactivated; -} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, -10, }; - -const struct s_tpm_physicalenable_cmd{ - uint8_t buffer[10]; -} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, -}; - -const struct s_tpm_physicaldisable_cmd{ - uint8_t buffer[10]; -} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, -}; - -const struct s_tpm_forceclear_cmd{ - uint8_t buffer[10]; -} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, -}; - -const struct s_tpm_readpubek_cmd{ - uint8_t buffer[30]; -} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, -}; - -const struct s_tpm_continueselftest_cmd{ - uint8_t buffer[10]; -} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, -}; - -const struct s_tpm_selftestfull_cmd{ - uint8_t buffer[10]; -} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, -}; - -const struct s_tpm_resume_cmd{ - uint8_t buffer[12]; -} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, -}; - -const struct s_tpm_savestate_cmd{ - uint8_t buffer[10]; -} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, -}; - -const struct s_tpm_startup_cmd{ - uint8_t buffer[12]; -} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, -}; - -const struct s_tpm_finalizepp_cmd{ - uint8_t buffer[12]; -} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, -}; - -const struct s_tpm_pplock_cmd{ - uint8_t buffer[12]; -} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, -}; - -const struct s_tpm_ppenable_cmd{ - uint8_t buffer[12]; -} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, -}; - -const struct s_tpm_ppassert_cmd{ - uint8_t buffer[12]; -} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, -}; - -const struct s_tpm_pcr_read_cmd{ - uint8_t buffer[14]; - uint16_t pcrNum; -} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, -10, }; - -const struct s_tpm_nv_read_cmd{ - uint8_t buffer[22]; - uint16_t index; - uint16_t length; -} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, -10, 18, }; - -const struct s_tpm_nv_write_cmd{ - uint8_t buffer[256]; - uint16_t index; - uint16_t length; - uint16_t data; -} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, -10, 18, 22, }; - -const struct s_tpm_nv_definespace_cmd{ - uint8_t buffer[101]; - uint16_t index; - uint16_t perm; - uint16_t size; -} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, -12, 70, 77, }; - -const int kWriteInfoLength = 12; -const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/lib/tpm/Makefile.inc b/src/lib/tpm/Makefile.inc new file mode 100644 index 0000000..81a3eb9 --- /dev/null +++ b/src/lib/tpm/Makefile.inc @@ -0,0 +1,13 @@ +ifneq ($(CONFIG_CHROMEOS),y) +romstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +ramstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +else +romstage-$(CONFIG_LPC_TPM) += tspi.c +endif + +ifeq ($(MOCK_TPM),1) +libverstage-y += mocked_tss.c +else +libverstage-y += tss.c +endif + diff --git a/src/lib/tpm/mocked_tss.c b/src/lib/tpm/mocked_tss.c new file mode 100644 index 0000000..ce956ad --- /dev/null +++ b/src/lib/tpm/mocked_tss.c @@ -0,0 +1,136 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <tpm/tss.h> + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +uint32_t tlcl_lib_init(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_resume(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_continue_self_test(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_global_lock(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} diff --git a/src/lib/tpm/tspi.c b/src/lib/tpm/tspi.c new file mode 100644 index 0000000..00848f1 --- /dev/null +++ b/src/lib/tpm/tspi.c @@ -0,0 +1,95 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> + +#include <tpm/tss.h> +#include <tpm/tspi.h> + +void init_tpm(int s3resume) +{ + u32 result = 0; + + if (CONFIG_TPM_DEACTIVATE) { + printk(BIOS_SPEW, "TPM: Deactivate\n"); + + result = tlcl_set_deactivated(1); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + /* Doing TPM startup when we're not coming in on the S3 resume path + * saves us roughly 20ms in boot time only. This does not seem to + * be worth an API change to vboot_reference-firmware right now, so + * let's keep the code around, but just bail out early: + */ + if (s3resume ? CONFIG_NO_TPM_RESUME + : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) + return; + + printk(BIOS_DEBUG, "TPM initialization.\n"); + + if(tlcl_lib_init() != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + + if (s3resume) { + /* S3 Resume */ + printk(BIOS_SPEW, "TPM: Resume\n"); + + result = tlcl_resume(); + if(result == TPM_E_INVALID_POSTINIT) { + /* We're on a platform where the TPM maintains power + * in S3, so it's already initialized. + */ + printk(BIOS_DEBUG, "TPM: Already initialized.\n"); + return; + } else if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } else { + printk(BIOS_SPEW, "TPM: Startup\n"); + result = tlcl_startup(); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + if (result == TPM_SUCCESS) { + printk(BIOS_SPEW, "TPM: OK.\n"); + return; + } + + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + + if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { + printk(BIOS_ERR, "Hard reset!\n"); + post_code(POST_TPM_FAILURE); + if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) + cbmem_dump_console(); + hard_reset(); + } +} \ No newline at end of file diff --git a/src/lib/tpm/tss.c b/src/lib/tpm/tss.c new file mode 100644 index 0000000..08d743c --- /dev/null +++ b/src/lib/tpm/tss.c @@ -0,0 +1,331 @@ +/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* A lightweight TPM command library. + * + * The general idea is that TPM commands are array of bytes whose + * fields are mostly compile-time constant. The goal is to build much + * of the commands at compile time (or build time) and change some of + * the fields at run time as needed. The code in + * utility/tlcl_generator.c builds structures containing the commands, + * as well as the offsets of the fields that need to be set at run + * time. + */ + +#include <assert.h> +#include <string.h> +#include <tpm/tss.h> +#include <tpm.h> +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> +#include "tss_internal.h" +#include "tss_structures.h" + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +#define UNKNOWN_ERROR 0x10000001 // see VBOOT2 error codes.. + +static int tpm_send_receive(const uint8_t *request, + uint32_t request_length, + uint8_t *response, + uint32_t *response_length) +{ + size_t len = *response_length; + if (tis_sendrecv(request, request_length, response, &len)) + return UNKNOWN_ERROR; + /* check 64->32bit overflow and (re)check response buffer overflow */ + if (len > *response_length) + return UNKNOWN_ERROR; + *response_length = len; + return TPM_SUCCESS; +} + +/* Sets the size field of a TPM command. */ +static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { + to_tpm_uint32(buffer + sizeof(uint16_t), size); +} + +/* Gets the size field of a TPM command. */ +__attribute__((unused)) +static inline int tpm_command_size(const uint8_t* buffer) { + uint32_t size; + from_tpm_uint32(buffer + sizeof(uint16_t), &size); + return (int) size; +} + +/* Gets the code field of a TPM command. */ +static inline int tpm_command_code(const uint8_t* buffer) { + uint32_t code; + from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); + return code; +} + +/* Gets the return code field of a TPM result. */ +static inline int tpm_return_code(const uint8_t* buffer) { + return tpm_command_code(buffer); +} + +/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or + * DOING_SELFTEST errors are returned. + */ +static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, + uint8_t* response, int max_length) { + uint32_t response_length = max_length; + uint32_t result; + + result = tpm_send_receive(request, tpm_command_size(request), + response, &response_length); + if (0 != result) { + /* Communication with TPM failed, so response is garbage */ + VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", + tpm_command_code(request), result); + return result; + } + /* Otherwise, use the result code from the response */ + result = tpm_return_code(response); + + /* TODO: add paranoia about returned response_length vs. max_length + * (and possibly expected length from the response header). See + * crosbug.com/17017 */ + + VBDEBUG("TPM: command 0x%x returned 0x%x\n", + tpm_command_code(request), result); + +return result; +} + + +/* Sends a TPM command and gets a response. Returns 0 if success or the TPM + * error code if error. Waits for the self test to complete if needed. */ +uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, + int max_length) { + uint32_t result = tlcl_send_receive_no_retry(request, response, + max_length); + /* If the command fails because the self test has not completed, try it + * again after attempting to ensure that the self test has completed. */ + if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { + result = tlcl_continue_self_test(); + if (result != TPM_SUCCESS) + return result; +#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) + /* Retry only once */ + result = tlcl_send_receive_no_retry(request, response, + max_length); +#else + /* This needs serious testing. The TPM specification says: "iii. + * The caller MUST wait for the actions of TPM_ContinueSelfTest + * to complete before reissuing the command C1." But, if + * ContinueSelfTest is non-blocking, how do we know that the + * actions have completed other than trying again? */ + do { + result = tlcl_send_receive_no_retry(request, response, + max_length); + } while (result == TPM_E_DOING_SELFTEST); +#endif + } + return result; +} + +/* Sends a command and returns the error code. */ +static uint32_t send(const uint8_t* command) { + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + return tlcl_send_receive(command, response, sizeof(response)); +} + +/* Exported functions. */ + +uint32_t tlcl_lib_init(void) { + if (tis_init()) + return UNKNOWN_ERROR; + if (tis_open()) + return UNKNOWN_ERROR; + return TPM_SUCCESS; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("TPM: Startup\n"); + return send(tpm_startup_cmd.buffer); +} + +uint32_t tlcl_resume(void) { + VBDEBUG("TPM: Resume\n"); + return send(tpm_resume_cmd.buffer); +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("TPM: Self test full\n"); + return send(tpm_selftestfull_cmd.buffer); +} + +uint32_t tlcl_continue_self_test(void) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + VBDEBUG("TPM: Continue self test\n"); + /* Call the No Retry version of SendReceive to avoid recursion. */ + return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, + response, sizeof(response)); +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + struct s_tpm_nv_definespace_cmd cmd; + VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); + memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); + return send(cmd.buffer); +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + struct s_tpm_nv_write_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + const int total_length = + kTpmRequestHeaderLength + kWriteInfoLength + length; + + VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); + assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); + set_tpm_command_size(cmd.buffer, total_length); + + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); + memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); + + return tlcl_send_receive(cmd.buffer, response, sizeof(response)); +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + struct s_tpm_nv_read_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t result_length; + uint32_t result; + + VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result == TPM_SUCCESS && length > 0) { + uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; + from_tpm_uint32(nv_read_cursor, &result_length); + nv_read_cursor += sizeof(uint32_t); + memcpy(data, nv_read_cursor, result_length); + } + + return result; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("TPM: Asserting physical presence\n"); + return send(tpm_ppassert_cmd.buffer); +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("TPM: Enable the physical presence command\n"); + return send(tpm_ppenable_cmd.buffer); +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); + return send(tpm_finalizepp_cmd.buffer); +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("TPM: Set NV locked\n"); + return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("TPM: Force clear\n"); + return send(tpm_forceclear_cmd.buffer); +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("TPM: Enabling TPM\n"); + return send(tpm_physicalenable_cmd.buffer); +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + struct s_tpm_physicalsetdeactivated_cmd cmd; + VBDEBUG("TPM: SetDeactivated(%d)\n", flag); + memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); + *(cmd.buffer + cmd.deactivated) = flag; + return send(cmd.buffer); +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t size; + uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, + sizeof(response)); + if (result != TPM_SUCCESS) + return result; + from_tpm_uint32(response + kTpmResponseHeaderLength, &size); + assert(size == sizeof(TPM_PERMANENT_FLAGS)); + memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), + sizeof(TPM_PERMANENT_FLAGS)); + return result; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + TPM_PERMANENT_FLAGS pflags; + uint32_t result = tlcl_get_permanent_flags(&pflags); + if (result == TPM_SUCCESS) { + if (disable) + *disable = pflags.disable; + if (deactivated) + *deactivated = pflags.deactivated; + if (nvlocked) + *nvlocked = pflags.nvLocked; + VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", + pflags.disable, pflags.deactivated, pflags.nvLocked); + } + return result; +} + +uint32_t tlcl_set_global_lock(void) +{ + uint32_t x; + VBDEBUG("TPM: Set global lock\n"); + return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + struct s_tpm_extend_cmd cmd; + uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; + uint32_t result; + + memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); + memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result != TPM_SUCCESS) + return result; + + if (out_digest) + memcpy(out_digest, response + kTpmResponseHeaderLength, + kPcrDigestLength); + return result; +} diff --git a/src/lib/tpm/tss_internal.h b/src/lib/tpm/tss_internal.h new file mode 100644 index 0000000..bc56b12 --- /dev/null +++ b/src/lib/tpm/tss_internal.h @@ -0,0 +1,61 @@ +/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef LIB_TPM_TSS_INTERNAL_H +#define LIB_TPM_TSS_INTERNAL_H + +/* + * These numbers derive from adding the sizes of command fields as shown in the + * TPM commands manual. + */ +#define kTpmRequestHeaderLength 10 +#define kTpmResponseHeaderLength 10 +#define kTpmReadInfoLength 12 +#define kEncAuthLength 20 +#define kPcrDigestLength 20 + + +/* + * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM + * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command + * buffer into a variable. + */ +__attribute__((unused)) +static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { + buffer[0] = (uint8_t)(x >> 24); + buffer[1] = (uint8_t)((x >> 16) & 0xff); + buffer[2] = (uint8_t)((x >> 8) & 0xff); + buffer[3] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { + *x = ((buffer[0] << 24) | + (buffer[1] << 16) | + (buffer[2] << 8) | + buffer[3]); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { + buffer[0] = (uint8_t)(x >> 8); + buffer[1] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { + *x = (buffer[0] << 8) | buffer[1]; +} + +#endif /* LIB_TPM_TSS_INTERNAL_H */ \ No newline at end of file diff --git a/src/lib/tpm/tss_structures.h b/src/lib/tpm/tss_structures.h new file mode 100644 index 0000000..36c1bb9 --- /dev/null +++ b/src/lib/tpm/tss_structures.h @@ -0,0 +1,138 @@ +/* This file is automatically generated */ + +const struct s_tpm_extend_cmd{ + uint8_t buffer[34]; + uint16_t pcrNum; + uint16_t inDigest; +} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, +10, 14, }; + +const struct s_tpm_get_random_cmd{ + uint8_t buffer[14]; + uint16_t bytesRequested; +} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, +10, }; + +const struct s_tpm_getownership_cmd{ + uint8_t buffer[22]; +} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, +}; + +const struct s_tpm_getpermissions_cmd{ + uint8_t buffer[22]; + uint16_t index; +} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, +18, }; + +const struct s_tpm_getstclearflags_cmd{ + uint8_t buffer[22]; +} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, +}; + +const struct s_tpm_getflags_cmd{ + uint8_t buffer[22]; +} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, +}; + +const struct s_tpm_physicalsetdeactivated_cmd{ + uint8_t buffer[11]; + uint16_t deactivated; +} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, +10, }; + +const struct s_tpm_physicalenable_cmd{ + uint8_t buffer[10]; +} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, +}; + +const struct s_tpm_physicaldisable_cmd{ + uint8_t buffer[10]; +} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, +}; + +const struct s_tpm_forceclear_cmd{ + uint8_t buffer[10]; +} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, +}; + +const struct s_tpm_readpubek_cmd{ + uint8_t buffer[30]; +} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, +}; + +const struct s_tpm_continueselftest_cmd{ + uint8_t buffer[10]; +} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, +}; + +const struct s_tpm_selftestfull_cmd{ + uint8_t buffer[10]; +} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, +}; + +const struct s_tpm_resume_cmd{ + uint8_t buffer[12]; +} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, +}; + +const struct s_tpm_savestate_cmd{ + uint8_t buffer[10]; +} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, +}; + +const struct s_tpm_startup_cmd{ + uint8_t buffer[12]; +} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, +}; + +const struct s_tpm_finalizepp_cmd{ + uint8_t buffer[12]; +} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, +}; + +const struct s_tpm_pplock_cmd{ + uint8_t buffer[12]; +} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, +}; + +const struct s_tpm_ppenable_cmd{ + uint8_t buffer[12]; +} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, +}; + +const struct s_tpm_ppassert_cmd{ + uint8_t buffer[12]; +} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, +}; + +const struct s_tpm_pcr_read_cmd{ + uint8_t buffer[14]; + uint16_t pcrNum; +} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, +10, }; + +const struct s_tpm_nv_read_cmd{ + uint8_t buffer[22]; + uint16_t index; + uint16_t length; +} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, +10, 18, }; + +const struct s_tpm_nv_write_cmd{ + uint8_t buffer[256]; + uint16_t index; + uint16_t length; + uint16_t data; +} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, +10, 18, 22, }; + +const struct s_tpm_nv_definespace_cmd{ + uint8_t buffer[101]; + uint16_t index; + uint16_t perm; + uint16_t size; +} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, +12, 70, 77, }; + +const int kWriteInfoLength = 12; +const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/mainboard/google/auron/acpi/mainboard.asl b/src/mainboard/google/auron/acpi/mainboard.asl index 8461a9d..b4b0ba2 100644 --- a/src/mainboard/google/auron/acpi/mainboard.asl +++ b/src/mainboard/google/auron/acpi/mainboard.asl @@ -48,7 +48,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.PCI0.I2C0) diff --git a/src/mainboard/google/auron/devicetree.cb b/src/mainboard/google/auron/devicetree.cb index 77e71b8..ea71cf6 100644 --- a/src/mainboard/google/auron/devicetree.cb +++ b/src/mainboard/google/auron/devicetree.cb @@ -90,7 +90,7 @@ chip soc/intel/broadwell device pci 1d.0 on end # USB2 EHCI device pci 1e.0 off end # PCI bridge device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/cyan/acpi/mainboard.asl b/src/mainboard/google/cyan/acpi/mainboard.asl index 9918672..183c4b1 100755 --- a/src/mainboard/google/cyan/acpi/mainboard.asl +++ b/src/mainboard/google/cyan/acpi/mainboard.asl @@ -46,7 +46,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.I2C1) diff --git a/src/mainboard/google/cyan/devicetree.cb b/src/mainboard/google/cyan/devicetree.cb index c36ae3d..c845a8c 100755 --- a/src/mainboard/google/cyan/devicetree.cb +++ b/src/mainboard/google/cyan/devicetree.cb @@ -126,7 +126,7 @@ chip soc/intel/braswell device pci 1e.6 on end # 8086 2290 - SPI 2 device pci 1e.7 on end # 8086 22ac - SPI 3 device pci 1f.0 on # 8086 229c - LPC bridge - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/glados/acpi/mainboard.asl b/src/mainboard/google/glados/acpi/mainboard.asl index 53001e4..f3915fb 100644 --- a/src/mainboard/google/glados/acpi/mainboard.asl +++ b/src/mainboard/google/glados/acpi/mainboard.asl @@ -63,7 +63,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Trackpad */ diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb index b48556f..e466278 100644 --- a/src/mainboard/google/glados/devicetree.cb +++ b/src/mainboard/google/glados/devicetree.cb @@ -93,7 +93,7 @@ chip soc/intel/skylake device pci 1e.4 on end # eMMC device pci 1e.6 on end # SDCard device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end chip ec/google/chromeec diff --git a/src/mainboard/google/jecht/acpi/mainboard.asl b/src/mainboard/google/jecht/acpi/mainboard.asl index 236f881..7545cb0 100644 --- a/src/mainboard/google/jecht/acpi/mainboard.asl +++ b/src/mainboard/google/jecht/acpi/mainboard.asl @@ -33,7 +33,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/google/link/romstage.c b/src/mainboard/google/link/romstage.c index e9b4a09..1837d50 100644 --- a/src/mainboard/google/link/romstage.c +++ b/src/mainboard/google/link/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/msr.h> #include <halt.h> #include "gpio.h" -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <southbridge/intel/bd82x6x/chip.h> diff --git a/src/mainboard/google/parrot/romstage.c b/src/mainboard/google/parrot/romstage.c index a947c48..209611e 100644 --- a/src/mainboard/google/parrot/romstage.c +++ b/src/mainboard/google/parrot/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <cbfs.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "ec/compal/ene932/ec.h" static void pch_enable_lpc(void) diff --git a/src/mainboard/google/samus/acpi/mainboard.asl b/src/mainboard/google/samus/acpi/mainboard.asl index 04f98a9..a2a337f 100644 --- a/src/mainboard/google/samus/acpi/mainboard.asl +++ b/src/mainboard/google/samus/acpi/mainboard.asl @@ -62,7 +62,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/google/samus/devicetree.cb b/src/mainboard/google/samus/devicetree.cb index d12762d..104af07 100644 --- a/src/mainboard/google/samus/devicetree.cb +++ b/src/mainboard/google/samus/devicetree.cb @@ -94,7 +94,7 @@ chip soc/intel/broadwell device pci 1d.0 off end # USB2 EHCI device pci 1e.0 off end # PCI bridge device pci 1f.0 on - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/google/stout/romstage.c b/src/mainboard/google/stout/romstage.c index 31b61e2..9d9f761 100644 --- a/src/mainboard/google/stout/romstage.c +++ b/src/mainboard/google/stout/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <ec/quanta/it8518/ec.h> #include "ec.h" diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c index bcf498b..d612d67 100644 --- a/src/mainboard/intel/emeraldlake2/romstage.c +++ b/src/mainboard/intel/emeraldlake2/romstage.c @@ -39,7 +39,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #define SIO_PORT 0x164e diff --git a/src/mainboard/intel/kunimitsu/acpi/mainboard.asl b/src/mainboard/intel/kunimitsu/acpi/mainboard.asl index a5e7bcf..047e91c 100644 --- a/src/mainboard/intel/kunimitsu/acpi/mainboard.asl +++ b/src/mainboard/intel/kunimitsu/acpi/mainboard.asl @@ -52,7 +52,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.PCI0.I2C0) { diff --git a/src/mainboard/intel/sklrvp/acpi/mainboard.asl b/src/mainboard/intel/sklrvp/acpi/mainboard.asl index d771f62..8737aa6 100644 --- a/src/mainboard/intel/sklrvp/acpi/mainboard.asl +++ b/src/mainboard/intel/sklrvp/acpi/mainboard.asl @@ -28,7 +28,7 @@ */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* diff --git a/src/mainboard/intel/strago/acpi/mainboard.asl b/src/mainboard/intel/strago/acpi/mainboard.asl index eefa005..01287a0 100755 --- a/src/mainboard/intel/strago/acpi/mainboard.asl +++ b/src/mainboard/intel/strago/acpi/mainboard.asl @@ -45,7 +45,7 @@ Scope (\_SB) */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } Scope (\_SB.I2C1) { diff --git a/src/mainboard/intel/strago/devicetree.cb b/src/mainboard/intel/strago/devicetree.cb index bcf92f1..15b87a8 100755 --- a/src/mainboard/intel/strago/devicetree.cb +++ b/src/mainboard/intel/strago/devicetree.cb @@ -126,7 +126,7 @@ chip soc/intel/braswell device pci 1e.6 on end # 8086 2290 - SPI 2 device pci 1e.7 on end # 8086 22ac - SPI 3 device pci 1f.0 on # 8086 229c - LPC bridge - chip drivers/pc80/tpm + chip drivers/tpm # Rising edge interrupt register "irq_polarity" = "2" device pnp 0c31.0 on diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb index cd70228..8fb40c1 100644 --- a/src/mainboard/lenovo/t420s/devicetree.cb +++ b/src/mainboard/lenovo/t420s/devicetree.cb @@ -112,7 +112,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t420s/dsdt.asl b/src/mainboard/lenovo/t420s/dsdt.asl index 64e4e9f..6d5c640 100644 --- a/src/mainboard/lenovo/t420s/dsdt.asl +++ b/src/mainboard/lenovo/t420s/dsdt.asl @@ -59,7 +59,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t430s/devicetree.cb b/src/mainboard/lenovo/t430s/devicetree.cb index f3e453e..56ca8cd 100644 --- a/src/mainboard/lenovo/t430s/devicetree.cb +++ b/src/mainboard/lenovo/t430s/devicetree.cb @@ -116,7 +116,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t430s/dsdt.asl b/src/mainboard/lenovo/t430s/dsdt.asl index 64e4e9f..6d5c640 100644 --- a/src/mainboard/lenovo/t430s/dsdt.asl +++ b/src/mainboard/lenovo/t430s/dsdt.asl @@ -59,7 +59,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb index ff9745e..6c1ea89 100644 --- a/src/mainboard/lenovo/t520/devicetree.cb +++ b/src/mainboard/lenovo/t520/devicetree.cb @@ -93,7 +93,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/t520/dsdt.asl +++ b/src/mainboard/lenovo/t520/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/t530/Kconfig b/src/mainboard/lenovo/t530/Kconfig index f144afb..6aef758 100644 --- a/src/mainboard/lenovo/t530/Kconfig +++ b/src/mainboard/lenovo/t530/Kconfig @@ -23,6 +23,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_DO_NATIVE_VGA_INIT # default to native vga init select ENABLE_VMX select MAINBOARD_HAS_LPC_TPM + select MAINBOARD_HAS_CHROMEOS # Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/t530/devicetree.cb b/src/mainboard/lenovo/t530/devicetree.cb index e1b22fd..830ccdd 100644 --- a/src/mainboard/lenovo/t530/devicetree.cb +++ b/src/mainboard/lenovo/t530/devicetree.cb @@ -98,7 +98,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/t530/dsdt.asl b/src/mainboard/lenovo/t530/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/t530/dsdt.asl +++ b/src/mainboard/lenovo/t530/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb index 8e9e0a1..9447bfc 100644 --- a/src/mainboard/lenovo/x201/devicetree.cb +++ b/src/mainboard/lenovo/x201/devicetree.cb @@ -156,7 +156,7 @@ chip northbridge/intel/nehalem # DLPC, not connected device pnp 164e.19 off end end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end end diff --git a/src/mainboard/lenovo/x201/dsdt.asl b/src/mainboard/lenovo/x201/dsdt.asl index f2f0a89..ec3f1f4 100644 --- a/src/mainboard/lenovo/x201/dsdt.asl +++ b/src/mainboard/lenovo/x201/dsdt.asl @@ -92,7 +92,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x201/romstage.c b/src/mainboard/lenovo/x201/romstage.c index 1e335d3..bb49b49 100644 --- a/src/mainboard/lenovo/x201/romstage.c +++ b/src/mainboard/lenovo/x201/romstage.c @@ -37,7 +37,7 @@ #include <timestamp.h> #include <arch/acpi.h> #include <cbmem.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #include "dock.h" diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb index 9c3aac6..36a6c07 100644 --- a/src/mainboard/lenovo/x220/devicetree.cb +++ b/src/mainboard/lenovo/x220/devicetree.cb @@ -126,7 +126,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/x220/dsdt.asl b/src/mainboard/lenovo/x220/dsdt.asl index f5f3ace..36c1f40 100644 --- a/src/mainboard/lenovo/x220/dsdt.asl +++ b/src/mainboard/lenovo/x220/dsdt.asl @@ -58,7 +58,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } /* Chipset specific sleep states */ diff --git a/src/mainboard/lenovo/x230/devicetree.cb b/src/mainboard/lenovo/x230/devicetree.cb index 99db7dd..9e1ed8a 100644 --- a/src/mainboard/lenovo/x230/devicetree.cb +++ b/src/mainboard/lenovo/x230/devicetree.cb @@ -128,7 +128,7 @@ chip northbridge/intel/sandybridge register "dock_event_enable" = "0x01" end - chip drivers/pc80/tpm + chip drivers/tpm device pnp 0c31.0 on end end diff --git a/src/mainboard/lenovo/x230/dsdt.asl b/src/mainboard/lenovo/x230/dsdt.asl index 1c71c3c..20f83cc 100644 --- a/src/mainboard/lenovo/x230/dsdt.asl +++ b/src/mainboard/lenovo/x230/dsdt.asl @@ -57,7 +57,7 @@ DefinitionBlock( */ Scope (\_SB.PCI0.LPCB) { - #include <drivers/pc80/tpm/acpi/tpm.asl> + #include <drivers/tpm/acpi/tpm.asl> } diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c index 015ae08..cea088d 100644 --- a/src/mainboard/samsung/lumpy/romstage.c +++ b/src/mainboard/samsung/lumpy/romstage.c @@ -32,7 +32,7 @@ #include <cbmem.h> #include <console/console.h> #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <northbridge/intel/sandybridge/sandybridge.h> #include <northbridge/intel/sandybridge/raminit.h> #include <southbridge/intel/bd82x6x/pch.h> diff --git a/src/mainboard/samsung/stumpy/romstage.c b/src/mainboard/samsung/stumpy/romstage.c index 161c8d1..2906815 100644 --- a/src/mainboard/samsung/stumpy/romstage.c +++ b/src/mainboard/samsung/stumpy/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #if CONFIG_DRIVERS_UART_8250IO #include <superio/smsc/lpc47n207/lpc47n207.h> diff --git a/src/northbridge/intel/sandybridge/romstage_native.c b/src/northbridge/intel/sandybridge/romstage_native.c index 45f671c..13696bd 100644 --- a/src/northbridge/intel/sandybridge/romstage_native.c +++ b/src/northbridge/intel/sandybridge/romstage_native.c @@ -32,7 +32,7 @@ #include <device/pci_def.h> #include <device/device.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "raminit_native.h" #include <northbridge/intel/sandybridge/chip.h> #include "southbridge/intel/bd82x6x/pch.h" diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index 1b93eb6..108faf3 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -33,7 +33,7 @@ #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <vendorcode/google/chromeos/chromeos.h> #include <soc/gpio.h> #include <soc/iomap.h> diff --git a/src/soc/intel/braswell/romstage/romstage.c b/src/soc/intel/braswell/romstage/romstage.c index 64a3dee..fa9a815 100644 --- a/src/soc/intel/braswell/romstage/romstage.c +++ b/src/soc/intel/braswell/romstage/romstage.c @@ -50,7 +50,7 @@ #include <soc/romstage.h> #include <soc/smm.h> #include <soc/spi.h> -#include <tpm.h> +#include <tpm/tsṕi.h> void program_base_addresses(void) { diff --git a/src/soc/intel/broadwell/romstage/romstage.c b/src/soc/intel/broadwell/romstage/romstage.c index 27fb0f2..166ee30 100644 --- a/src/soc/intel/broadwell/romstage/romstage.c +++ b/src/soc/intel/broadwell/romstage/romstage.c @@ -29,7 +29,7 @@ #include <cbmem.h> #include <cpu/x86/mtrr.h> #include <elog.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> diff --git a/src/vendorcode/google/chromeos/vboot2/antirollback.c b/src/vendorcode/google/chromeos/vboot2/antirollback.c index 407b19c..f947c35 100644 --- a/src/vendorcode/google/chromeos/vboot2/antirollback.c +++ b/src/vendorcode/google/chromeos/vboot2/antirollback.c @@ -9,8 +9,8 @@ #include <antirollback.h> #include <stdlib.h> #include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm_lite/tss_constants.h> +#include <tpm/tss.h> +#include <tpm/tss_constants.h> #include <vb2_api.h> #ifndef offsetof

1 0

Patch set updated for coreboot: TPM: Merge of two TPM API's into one API.
by Philipp Deppenwiese 13 Aug '15

13 Aug '15

Philipp Deppenwiese (zaolin(a)das-labor.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10542 -gerrit commit 8ae9c1e2d9fc98b5752cd23d0645069e66ffda6c Author: Philipp Deppenwiese <zaolin(a)das-labor.org> Date: Sat Jun 13 23:35:37 2015 +0200 TPM: Merge of two TPM API's into one API. Currently coreboot includes two TPM software implementations. Following changes are done: + Use Google's lib/tlcl.* small tpm software stack as the main one. + Remove the old one drivers/pc80/tpm/romstage.c which can't be used for vboot2. + Split & Merge implementations into TSS and TSPI. -> Rename tlcl* files into tss which is the common name. -> Move init_tpm(void) function from drivers/pc80/tpm/romstage.c into the lib/tpm/tspi.c which is also the common name for highlevel tpm functions based on tss. -> Put the tss and tspi files into tpm folders in lib/ and include/ . -> Change header includes so that tpm.h can be found in include/pc80/ and software stack related stuff in include/tpm. + Revert pragma once statements from previous commit. Compile: VBOOT2 Feature = yes Coreboot TPM Feature = yes Run: VBOOT2 Feature = not tested Coreboot TPM Feature = yes Change-Id: I8cbcd723d83ffcc0c1c47c58438dccdb16bb7cf7 Signed-off-by: Philipp Deppenwiese <zaolin(a)das-labor.org> --- src/cpu/intel/haswell/romstage.c | 2 +- src/drivers/pc80/tpm/Makefile.inc | 1 - src/drivers/pc80/tpm/romstage.c | 255 ---------------- src/drivers/pc80/tpm/tpm.c | 2 +- src/include/antirollback.h | 2 +- src/include/pc80/tpm.h | 69 +++++ src/include/tpm.h | 71 ----- src/include/tpm/tspi.h | 29 ++ src/include/tpm/tss.h | 136 +++++++++ src/include/tpm/tss_constants.h | 98 ++++++ src/include/tpm_lite/tlcl.h | 137 --------- src/include/tpm_lite/tss_constants.h | 96 ------ src/lib/Makefile.inc | 8 +- src/lib/mocked_tlcl.c | 136 --------- src/lib/tlcl.c | 327 -------------------- src/lib/tlcl_internal.h | 61 ---- src/lib/tlcl_structures.h | 138 --------- src/lib/tpm/Makefile.inc | 13 + src/lib/tpm/mocked_tss.c | 136 +++++++++ src/lib/tpm/tspi.c | 95 ++++++ src/lib/tpm/tss.c | 331 +++++++++++++++++++++ src/lib/tpm/tss_internal.h | 61 ++++ src/lib/tpm/tss_structures.h | 138 +++++++++ src/mainboard/google/link/romstage.c | 2 +- src/mainboard/google/parrot/romstage.c | 2 +- src/mainboard/google/stout/romstage.c | 2 +- src/mainboard/intel/emeraldlake2/romstage.c | 2 +- src/mainboard/lenovo/t530/Kconfig | 1 + src/mainboard/lenovo/x201/romstage.c | 2 +- src/mainboard/samsung/lumpy/romstage.c | 2 +- src/mainboard/samsung/stumpy/romstage.c | 2 +- .../intel/sandybridge/romstage_native.c | 2 +- src/soc/intel/baytrail/romstage/romstage.c | 2 +- src/soc/intel/braswell/romstage/romstage.c | 2 +- src/soc/intel/broadwell/romstage/romstage.c | 2 +- .../google/chromeos/vboot2/antirollback.c | 4 +- 36 files changed, 1124 insertions(+), 1245 deletions(-) diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index 6adb8be..c24883b 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -44,7 +44,7 @@ #include "northbridge/intel/haswell/raminit.h" #include "southbridge/intel/lynxpoint/pch.h" #include "southbridge/intel/lynxpoint/me.h" -#include <tpm.h> +#include <tpm/tspi.h> static inline void reset_system(void) { diff --git a/src/drivers/pc80/tpm/Makefile.inc b/src/drivers/pc80/tpm/Makefile.inc index 089d067..c900fe8 100644 --- a/src/drivers/pc80/tpm/Makefile.inc +++ b/src/drivers/pc80/tpm/Makefile.inc @@ -1,3 +1,2 @@ romstage-$(CONFIG_LPC_TPM) += tpm.c ramstage-$(CONFIG_LPC_TPM) += tpm.c -romstage-$(CONFIG_LPC_TPM) += romstage.c diff --git a/src/drivers/pc80/tpm/romstage.c b/src/drivers/pc80/tpm/romstage.c deleted file mode 100644 index 96760e2..0000000 --- a/src/drivers/pc80/tpm/romstage.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <types.h> -#include <console/cbmem_console.h> -#include <console/console.h> -#include <arch/acpi.h> -#include <tpm.h> -#include <reset.h> - -//#define EXTRA_LOGGING - -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ - -#define TPM_SUCCESS ((u32)0x00000000) - -#define TPM_E_IOERROR ((u32)0x0000001f) -#define TPM_E_COMMUNICATION_ERROR ((u32)0x00005004) -#define TPM_E_NON_FATAL ((u32)0x00000800) -#define TPM_E_INVALID_POSTINIT ((u32)0x00000026) - -#define TPM_E_NEEDS_SELFTEST ((u32)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((u32)(TPM_E_NON_FATAL + 2)) - -static const struct { - u8 buffer[12]; -} tpm_resume_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2 } -}; - -static const struct { - u8 buffer[12]; -} tpm_startup_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1 } -}; - -static const struct { - u8 buffer[12]; -} tpm_deactivate_cmd = { - {0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x3 } -}; - -static const struct { - u8 buffer[10]; -} tpm_continueselftest_cmd = { - { 0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53 } -}; - -static inline void FromTpmUint32(const u8 * buffer, u32 * x) -{ - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | (buffer[2] << 8) | buffer[3]); -} - -static inline int TpmCommandSize(const u8 * buffer) -{ - u32 size; - FromTpmUint32(buffer + sizeof(u16), &size); - return (int)size; -} - -/* Gets the code field of a TPM command. */ -static inline int TpmCommandCode(const u8 * buffer) -{ - u32 code; - FromTpmUint32(buffer + sizeof(u16) + sizeof(u32), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int TpmReturnCode(const u8 * buffer) -{ - return TpmCommandCode(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static u32 TlclSendReceiveNoRetry(const u8 * request, - u8 * response, int max_length) -{ - size_t response_length = max_length; - u32 result; - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: command: %x%x %x%x%x%x %x%x%x%x\n", - request[0], request[1], - request[2], request[3], request[4], request[5], - request[6], request[7], request[8], request[9]); -#endif - - result = TPM_SUCCESS; - if (tis_sendrecv - (request, TpmCommandSize(request), response, &response_length)) - result = TPM_E_IOERROR; - - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - printk(BIOS_DEBUG, - "TPM: command 0x%x send/receive failed: 0x%x\n", - TpmCommandCode(request), result); - return TPM_E_COMMUNICATION_ERROR; - } - /* Otherwise, use the result code from the response */ - result = TpmReturnCode(response); - -/* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - -#ifdef EXTRA_LOGGING - printk(BIOS_DEBUG, "TPM: response: %x%x %x%x%x%x %x%x%x%x\n", - response[0], response[1], - response[2], response[3], response[4], response[5], - response[6], response[7], response[8], response[9]); -#endif - - printk(BIOS_DEBUG, "TPM: command 0x%x returned 0x%x\n", - TpmCommandCode(request), result); - - return result; -} - -static inline u32 TlclContinueSelfTest(void) -{ - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - printk(BIOS_DEBUG, "TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return TlclSendReceiveNoRetry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. In the firmware, waits for the self test to complete - * if needed. In the host, reports the first error without retries. */ -static u32 TlclSendReceive(const u8 * request, u8 * response, int max_length) -{ - u32 result = TlclSendReceiveNoRetry(request, response, max_length); - /* When compiling for the firmware, hide command failures due to the self - * test not having run or completed. */ - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = TlclContinueSelfTest(); - if (result != TPM_SUCCESS) { - return result; - } -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = TlclSendReceiveNoRetry(request, response, max_length); -#else - /* This needs serious testing. The TPM specification says: - * "iii. The caller MUST wait for the actions of - * TPM_ContinueSelfTest to complete before reissuing the - * command C1." But, if ContinueSelfTest is non-blocking, how - * do we know that the actions have completed other than trying - * again? */ - do { - result = - TlclSendReceiveNoRetry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - - return result; -} - -void init_tpm(int s3resume) -{ - u32 result; - u8 response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - - if (CONFIG_TPM_DEACTIVATE) { - printk(BIOS_SPEW, "TPM: Deactivate\n"); - result = TlclSendReceive(tpm_deactivate_cmd.buffer, - response, sizeof(response)); - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - return; - } - - /* Doing TPM startup when we're not coming in on the S3 resume path - * saves us roughly 20ms in boot time only. This does not seem to - * be worth an API change to vboot_reference-firmware right now, so - * let's keep the code around, but just bail out early: - */ - if (s3resume ? CONFIG_NO_TPM_RESUME - : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) - return; - - printk(BIOS_DEBUG, "TPM initialization.\n"); - - printk(BIOS_SPEW, "TPM: Init\n"); - if (tis_init()) - return; - - printk(BIOS_SPEW, "TPM: Open\n"); - if (tis_open()) - return; - - - if (s3resume) { - /* S3 Resume */ - printk(BIOS_SPEW, "TPM: Resume\n"); - result = TlclSendReceive(tpm_resume_cmd.buffer, - response, sizeof(response)); - if (result == TPM_E_INVALID_POSTINIT) { - /* We're on a platform where the TPM maintains power - * in S3, so it's already initialized. - */ - printk(BIOS_DEBUG, "TPM: Already initialized.\n"); - return; - } - } else { - printk(BIOS_SPEW, "TPM: Startup\n"); - result = TlclSendReceive(tpm_startup_cmd.buffer, - response, sizeof(response)); - } - - if (result == TPM_SUCCESS) { - printk(BIOS_SPEW, "TPM: OK.\n"); - return; - } - - printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); - - if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { - printk(BIOS_ERR, "Hard reset!\n"); - post_code(POST_TPM_FAILURE); - if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) - cbmem_dump_console(); - hard_reset(); - } -} diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c index ba2561d..620a77d 100644 --- a/src/drivers/pc80/tpm/tpm.c +++ b/src/drivers/pc80/tpm/tpm.c @@ -32,7 +32,7 @@ #include <delay.h> #include <arch/io.h> #include <console/console.h> -#include <tpm.h> +#include <pc80/tpm.h> #include <arch/early_variables.h> #include <device/pnp.h> #include "chip.h" diff --git a/src/include/antirollback.h b/src/include/antirollback.h index 5ba36f7..9d3c3fd 100644 --- a/src/include/antirollback.h +++ b/src/include/antirollback.h @@ -9,7 +9,7 @@ #ifndef ANTIROLLBACK_H_ #define ANTIROLLBACK_H_ -#include "tpm_lite/tss_constants.h" +#include <tpm/tss_constants.h> struct vb2_context; enum vb2_pcr_digest; diff --git a/src/include/pc80/tpm.h b/src/include/pc80/tpm.h new file mode 100644 index 0000000..8923349 --- /dev/null +++ b/src/include/pc80/tpm.h @@ -0,0 +1,69 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2011 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef PC80_TPM_H +#define PC80_TPM_H + +#include <stddef.h> +#include <stdint.h> + +/* + * tis_init() + * + * Initialize the TPM device. Returns 0 on success or -1 on + * failure (in case device probing did not succeed). + */ +int tis_init(void); + +/* + * tis_open() + * + * Requests access to locality 0 for the caller. After all commands have been + * completed the caller is supposed to call tis_close(). + * + * Returns 0 on success, -1 on failure. + */ +int tis_open(void); + +/* + * tis_close() + * + * terminate the currect session with the TPM by releasing the locked + * locality. Returns 0 on success of -1 on failure (in case lock + * removal did not succeed). + */ +int tis_close(void); + +/* + * tis_sendrecv() + * + * Send the requested data to the TPM and then try to get its response + * + * @sendbuf - buffer of the data to send + * @send_size size of the data to send + * @recvbuf - memory to save the response to + * @recv_len - pointer to the size of the response buffer + * + * Returns 0 on success (and places the number of response bytes at recv_len) + * or -1 on failure. + */ +int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, + size_t *recv_len); + +#endif /* PC80_TPM_H */ \ No newline at end of file diff --git a/src/include/tpm.h b/src/include/tpm.h deleted file mode 100644 index 9b4db4a..0000000 --- a/src/include/tpm.h +++ /dev/null @@ -1,71 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2011 Google Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#ifndef TPM_H_ -#define TPM_H_ - -#include <stddef.h> -#include <stdint.h> - -/* - * tis_init() - * - * Initialize the TPM device. Returns 0 on success or -1 on - * failure (in case device probing did not succeed). - */ -int tis_init(void); - -/* - * tis_open() - * - * Requests access to locality 0 for the caller. After all commands have been - * completed the caller is supposed to call tis_close(). - * - * Returns 0 on success, -1 on failure. - */ -int tis_open(void); - -/* - * tis_close() - * - * terminate the currect session with the TPM by releasing the locked - * locality. Returns 0 on success of -1 on failure (in case lock - * removal did not succeed). - */ -int tis_close(void); - -/* - * tis_sendrecv() - * - * Send the requested data to the TPM and then try to get its response - * - * @sendbuf - buffer of the data to send - * @send_size size of the data to send - * @recvbuf - memory to save the response to - * @recv_len - pointer to the size of the response buffer - * - * Returns 0 on success (and places the number of response bytes at recv_len) - * or -1 on failure. - */ -int tis_sendrecv(const u8 *sendbuf, size_t send_size, u8 *recvbuf, - size_t *recv_len); - -void init_tpm(int s3resume); - -#endif /* TPM_H_ */ diff --git a/src/include/tpm/tspi.h b/src/include/tpm/tspi.h new file mode 100644 index 0000000..8e1b5f0 --- /dev/null +++ b/src/include/tpm/tspi.h @@ -0,0 +1,29 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#ifndef TPM_TSPI_H +#define TPM_TSPI_H + +/** + * TSPI Implementation for coreboot without vboot2 + */ +void init_tpm(int s3resume); + + +#endif /* TPM_TSPI_H */ \ No newline at end of file diff --git a/src/include/tpm/tss.h b/src/include/tpm/tss.h new file mode 100644 index 0000000..c6c4b1a --- /dev/null +++ b/src/include/tpm/tss.h @@ -0,0 +1,136 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* + * TPM Lightweight Command Library. + * + * A low-level library for interfacing to TPM hardware or an emulator. + */ + +#ifndef TPM_TSS_H +#define TPM_TSS_H + +#include "tss_constants.h" + +/*****************************************************************************/ +/* Functions implemented in tlcl.c */ + +/** + * Call this first. Returns 0 if success, nonzero if error. + */ +uint32_t tlcl_lib_init(void); + +/** + * Perform a raw TPM request/response transaction. + */ +uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, + int max_length); + +/* Commands */ + +/** + * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for + * success). + */ +uint32_t tlcl_startup(void); + +/** + * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned + * (0 for success). + */ +uint32_t tlcl_resume(void); + +/** + * Run the self test. + * + * Note---this is synchronous. To run this in parallel with other firmware, + * use ContinueSelfTest(). The TPM error code is returned. + */ +uint32_t tlcl_self_test_full(void); + +/** + * Run the self test in the background. + */ +uint32_t tlcl_continue_self_test(void); + +/** + * Define a space with permission [perm]. [index] is the index for the space, + * [size] the usable data size. The TPM error code is returned. + */ +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); + +/** + * Write [length] bytes of [data] to space at [index]. The TPM error code is + * returned. + */ +uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); + +/** + * Read [length] bytes from space at [index] into [data]. The TPM error code + * is returned. + */ +uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); + +/** + * Assert physical presence in software. The TPM error code is returned. + */ +uint32_t tlcl_assert_physical_presence(void); + +/** + * Enable the physical presence command. The TPM error code is returned. + */ +uint32_t tlcl_physical_presence_cmd_enable(void); + +/** + * Finalize the physical presence settings: sofware PP is enabled, hardware PP + * is disabled, and the lifetime lock is set. The TPM error code is returned. + */ +uint32_t tlcl_finalize_physical_presence(void); + +/** + * Set the nvLocked bit. The TPM error code is returned. + */ +uint32_t tlcl_set_nv_locked(void); + +/** + * Issue a ForceClear. The TPM error code is returned. + */ +uint32_t tlcl_force_clear(void); + +/** + * Issue a PhysicalEnable. The TPM error code is returned. + */ +uint32_t tlcl_set_enable(void); + +/** + * Issue a SetDeactivated. Pass 0 to activate. Returns result code. + */ +uint32_t tlcl_set_deactivated(uint8_t flag); + +/** + * Get flags of interest. Pointers for flags you aren't interested in may + * be NULL. The TPM error code is returned. + */ +uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, + uint8_t *nvlocked); + +/** + * Set the bGlobalLock flag, which only a reboot can clear. The TPM error + * code is returned. + */ +uint32_t tlcl_set_global_lock(void); + +/** + * Perform a TPM_Extend. + */ +uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, + uint8_t *out_digest); + +/** + * Get the entire set of permanent flags. + */ +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); + +#endif \ No newline at end of file diff --git a/src/include/tpm/tss_constants.h b/src/include/tpm/tss_constants.h new file mode 100644 index 0000000..9cfbe2d --- /dev/null +++ b/src/include/tpm/tss_constants.h @@ -0,0 +1,98 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Some TPM constants and type definitions for standalone compilation for use + * in the firmware + */ + +#ifndef TPM_TSS_CONSTANTS_H +#define TPM_TSS_CONSTANTS_H + +#include <stdint.h> + +#define TPM_MAX_COMMAND_SIZE 4096 +#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ +#define TPM_PUBEK_SIZE 256 +#define TPM_PCR_DIGEST 20 + +#define TPM_E_NON_FATAL 0x800 + +#define TPM_SUCCESS ((uint32_t)0x00000000) + +#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) +#define TPM_E_BADINDEX ((uint32_t)0x00000002) +#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) +#define TPM_E_IOERROR ((uint32_t)0x0000001f) +#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) +#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) +#define TPM_E_OWNER_SET ((uint32_t)0x00000014) + +#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) +#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) + +#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ +#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ +#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ +#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ +#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ +#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ +#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ +#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ +#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ +#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ +#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ + +#define TPM_NV_INDEX0 ((uint32_t)0x00000000) +#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) +#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) +#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) +#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) +#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) + +#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) +#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) +#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) + +#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) +#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) +#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) + +typedef uint8_t TSS_BOOL; +typedef uint16_t TPM_STRUCTURE_TAG; + +typedef struct tdTPM_PERMANENT_FLAGS +{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL disable; + TSS_BOOL ownership; + TSS_BOOL deactivated; + TSS_BOOL readPubek; + TSS_BOOL disableOwnerClear; + TSS_BOOL allowMaintenance; + TSS_BOOL physicalPresenceLifetimeLock; + TSS_BOOL physicalPresenceHWEnable; + TSS_BOOL physicalPresenceCMDEnable; + TSS_BOOL CEKPUsed; + TSS_BOOL TPMpost; + TSS_BOOL TPMpostLock; + TSS_BOOL FIPS; + TSS_BOOL Operator; + TSS_BOOL enableRevokeEK; + TSS_BOOL nvLocked; + TSS_BOOL readSRKPub; + TSS_BOOL tpmEstablished; + TSS_BOOL maintenanceDone; + TSS_BOOL disableFullDALogicInfo; +} TPM_PERMANENT_FLAGS; + +typedef struct tdTPM_STCLEAR_FLAGS{ + TPM_STRUCTURE_TAG tag; + TSS_BOOL deactivated; + TSS_BOOL disableForceClear; + TSS_BOOL physicalPresence; + TSS_BOOL physicalPresenceLock; + TSS_BOOL bGlobalLock; +} TPM_STCLEAR_FLAGS; + +#endif /* TPM_TSS_CONSTANTS_H */ \ No newline at end of file diff --git a/src/include/tpm_lite/tlcl.h b/src/include/tpm_lite/tlcl.h deleted file mode 100644 index 7724592..0000000 --- a/src/include/tpm_lite/tlcl.h +++ /dev/null @@ -1,137 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* - * TPM Lightweight Command Library. - * - * A low-level library for interfacing to TPM hardware or an emulator. - */ - -#ifndef TPM_LITE_TLCL_H_ -#define TPM_LITE_TLCL_H_ -#include <stdint.h> - -#include "tss_constants.h" - -/*****************************************************************************/ -/* Functions implemented in tlcl.c */ - -/** - * Call this first. Returns 0 if success, nonzero if error. - */ -uint32_t tlcl_lib_init(void); - -/** - * Perform a raw TPM request/response transaction. - */ -uint32_t tlcl_send_receive(const uint8_t *request, uint8_t *response, - int max_length); - -/* Commands */ - -/** - * Send a TPM_Startup(ST_CLEAR). The TPM error code is returned (0 for - * success). - */ -uint32_t tlcl_startup(void); - -/** - * Resume by sending a TPM_Startup(ST_STATE). The TPM error code is returned - * (0 for success). - */ -uint32_t tlcl_resume(void); - -/** - * Run the self test. - * - * Note---this is synchronous. To run this in parallel with other firmware, - * use ContinueSelfTest(). The TPM error code is returned. - */ -uint32_t tlcl_self_test_full(void); - -/** - * Run the self test in the background. - */ -uint32_t tlcl_continue_self_test(void); - -/** - * Define a space with permission [perm]. [index] is the index for the space, - * [size] the usable data size. The TPM error code is returned. - */ -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size); - -/** - * Write [length] bytes of [data] to space at [index]. The TPM error code is - * returned. - */ -uint32_t tlcl_write(uint32_t index, const void *data, uint32_t length); - -/** - * Read [length] bytes from space at [index] into [data]. The TPM error code - * is returned. - */ -uint32_t tlcl_read(uint32_t index, void *data, uint32_t length); - -/** - * Assert physical presence in software. The TPM error code is returned. - */ -uint32_t tlcl_assert_physical_presence(void); - -/** - * Enable the physical presence command. The TPM error code is returned. - */ -uint32_t tlcl_physical_presence_cmd_enable(void); - -/** - * Finalize the physical presence settings: sofware PP is enabled, hardware PP - * is disabled, and the lifetime lock is set. The TPM error code is returned. - */ -uint32_t tlcl_finalize_physical_presence(void); - -/** - * Set the nvLocked bit. The TPM error code is returned. - */ -uint32_t tlcl_set_nv_locked(void); - -/** - * Issue a ForceClear. The TPM error code is returned. - */ -uint32_t tlcl_force_clear(void); - -/** - * Issue a PhysicalEnable. The TPM error code is returned. - */ -uint32_t tlcl_set_enable(void); - -/** - * Issue a SetDeactivated. Pass 0 to activate. Returns result code. - */ -uint32_t tlcl_set_deactivated(uint8_t flag); - -/** - * Get flags of interest. Pointers for flags you aren't interested in may - * be NULL. The TPM error code is returned. - */ -uint32_t tlcl_get_flags(uint8_t *disable, uint8_t *deactivated, - uint8_t *nvlocked); - -/** - * Set the bGlobalLock flag, which only a reboot can clear. The TPM error - * code is returned. - */ -uint32_t tlcl_set_global_lock(void); - -/** - * Perform a TPM_Extend. - */ -uint32_t tlcl_extend(int pcr_num, const uint8_t *in_digest, - uint8_t *out_digest); - -/** - * Get the entire set of permanent flags. - */ -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS *pflags); - -#endif /* TPM_LITE_TLCL_H_ */ diff --git a/src/include/tpm_lite/tss_constants.h b/src/include/tpm_lite/tss_constants.h deleted file mode 100644 index 883a5ad..0000000 --- a/src/include/tpm_lite/tss_constants.h +++ /dev/null @@ -1,96 +0,0 @@ -/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Some TPM constants and type definitions for standalone compilation for use - * in the firmware - */ -#ifndef VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#define VBOOT_REFERENCE_TSS_CONSTANTS_H_ -#include <stdint.h> - -#define TPM_MAX_COMMAND_SIZE 4096 -#define TPM_LARGE_ENOUGH_COMMAND_SIZE 256 /* saves space in the firmware */ -#define TPM_PUBEK_SIZE 256 -#define TPM_PCR_DIGEST 20 - -#define TPM_E_NON_FATAL 0x800 - -#define TPM_SUCCESS ((uint32_t)0x00000000) - -#define TPM_E_AREA_LOCKED ((uint32_t)0x0000003c) -#define TPM_E_BADINDEX ((uint32_t)0x00000002) -#define TPM_E_BAD_PRESENCE ((uint32_t)0x0000002d) -#define TPM_E_IOERROR ((uint32_t)0x0000001f) -#define TPM_E_INVALID_POSTINIT ((uint32_t)0x00000026) -#define TPM_E_MAXNVWRITES ((uint32_t)0x00000048) -#define TPM_E_OWNER_SET ((uint32_t)0x00000014) - -#define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1)) -#define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2)) - -#define TPM_E_ALREADY_INITIALIZED ((uint32_t)0x00005000) /* vboot local */ -#define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001) /* vboot local */ -#define TPM_E_MUST_REBOOT ((uint32_t)0x00005002) /* vboot local */ -#define TPM_E_CORRUPTED_STATE ((uint32_t)0x00005003) /* vboot local */ -#define TPM_E_COMMUNICATION_ERROR ((uint32_t)0x00005004) /* vboot local */ -#define TPM_E_RESPONSE_TOO_LARGE ((uint32_t)0x00005005) /* vboot local */ -#define TPM_E_NO_DEVICE ((uint32_t)0x00005006) /* vboot local */ -#define TPM_E_INPUT_TOO_SMALL ((uint32_t)0x00005007) /* vboot local */ -#define TPM_E_WRITE_FAILURE ((uint32_t)0x00005008) /* vboot local */ -#define TPM_E_READ_EMPTY ((uint32_t)0x00005009) /* vboot local */ -#define TPM_E_READ_FAILURE ((uint32_t)0x0000500a) /* vboot local */ - -#define TPM_NV_INDEX0 ((uint32_t)0x00000000) -#define TPM_NV_INDEX_LOCK ((uint32_t)0xffffffff) -#define TPM_NV_PER_GLOBALLOCK (((uint32_t)1)<<15) -#define TPM_NV_PER_PPWRITE (((uint32_t)1)<<0) -#define TPM_NV_PER_READ_STCLEAR (((uint32_t)1)<<31) -#define TPM_NV_PER_WRITE_STCLEAR (((uint32_t)1)<<14) - -#define TPM_TAG_RQU_COMMAND ((uint16_t) 0xc1) -#define TPM_TAG_RQU_AUTH1_COMMAND ((uint16_t) 0xc2) -#define TPM_TAG_RQU_AUTH2_COMMAND ((uint16_t) 0xc3) - -#define TPM_TAG_RSP_COMMAND ((uint16_t) 0xc4) -#define TPM_TAG_RSP_AUTH1_COMMAND ((uint16_t) 0xc5) -#define TPM_TAG_RSP_AUTH2_COMMAND ((uint16_t) 0xc6) - -typedef uint8_t TSS_BOOL; -typedef uint16_t TPM_STRUCTURE_TAG; - -typedef struct tdTPM_PERMANENT_FLAGS -{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL disable; - TSS_BOOL ownership; - TSS_BOOL deactivated; - TSS_BOOL readPubek; - TSS_BOOL disableOwnerClear; - TSS_BOOL allowMaintenance; - TSS_BOOL physicalPresenceLifetimeLock; - TSS_BOOL physicalPresenceHWEnable; - TSS_BOOL physicalPresenceCMDEnable; - TSS_BOOL CEKPUsed; - TSS_BOOL TPMpost; - TSS_BOOL TPMpostLock; - TSS_BOOL FIPS; - TSS_BOOL Operator; - TSS_BOOL enableRevokeEK; - TSS_BOOL nvLocked; - TSS_BOOL readSRKPub; - TSS_BOOL tpmEstablished; - TSS_BOOL maintenanceDone; - TSS_BOOL disableFullDALogicInfo; -} TPM_PERMANENT_FLAGS; - -typedef struct tdTPM_STCLEAR_FLAGS{ - TPM_STRUCTURE_TAG tag; - TSS_BOOL deactivated; - TSS_BOOL disableForceClear; - TSS_BOOL physicalPresence; - TSS_BOOL physicalPresenceLock; - TSS_BOOL bGlobalLock; -} TPM_STCLEAR_FLAGS; - -#endif /* VBOOT_REFERENCE_TSS_CONSTANTS_H_ */ diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 8597667..140421e 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -16,7 +16,7 @@ # along with this program; if not, write to the Free Software # Foundation, Inc. # -subdirs-y += loaders +subdirs-y += loaders tpm bootblock-y += assets.c bootblock-y += prog_loaders.c @@ -54,12 +54,6 @@ verstage-y += boot_device.c verstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c -ifeq ($(MOCK_TPM),1) -libverstage-y += mocked_tlcl.c -else -libverstage-y += tlcl.c -endif - verstage-$(CONFIG_GENERIC_UDELAY) += timer.c verstage-$(CONFIG_GENERIC_GPIO_LIB) += gpio.c verstage-y += mem_pool.c diff --git a/src/lib/mocked_tlcl.c b/src/lib/mocked_tlcl.c deleted file mode 100644 index c5c12bf..0000000 --- a/src/lib/mocked_tlcl.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc. - */ - -#include <tpm_lite/tlcl.h> - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -uint32_t tlcl_lib_init(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_resume(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_continue_self_test(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_set_global_lock(void) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - VBDEBUG("MOCK_TPM: %s\n", __func__); - return TPM_E_NO_DEVICE; -} diff --git a/src/lib/tlcl.c b/src/lib/tlcl.c deleted file mode 100644 index ccf4e80..0000000 --- a/src/lib/tlcl.c +++ /dev/null @@ -1,327 +0,0 @@ -/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* A lightweight TPM command library. - * - * The general idea is that TPM commands are array of bytes whose - * fields are mostly compile-time constant. The goal is to build much - * of the commands at compile time (or build time) and change some of - * the fields at run time as needed. The code in - * utility/tlcl_generator.c builds structures containing the commands, - * as well as the offsets of the fields that need to be set at run - * time. - */ - -#include <assert.h> -#include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm.h> -#include <vb2_api.h> -#include "tlcl_internal.h" -#include "tlcl_structures.h" - -#ifdef FOR_TEST -#include <stdio.h> -#define VBDEBUG(format, args...) printf(format, ## args) -#else -#include <console/console.h> -#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) -#endif - -static int tpm_send_receive(const uint8_t *request, - uint32_t request_length, - uint8_t *response, - uint32_t *response_length) -{ - size_t len = *response_length; - if (tis_sendrecv(request, request_length, response, &len)) - return VB2_ERROR_UNKNOWN; - /* check 64->32bit overflow and (re)check response buffer overflow */ - if (len > *response_length) - return VB2_ERROR_UNKNOWN; - *response_length = len; - return VB2_SUCCESS; -} - -/* Sets the size field of a TPM command. */ -static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { - to_tpm_uint32(buffer + sizeof(uint16_t), size); -} - -/* Gets the size field of a TPM command. */ -__attribute__((unused)) -static inline int tpm_command_size(const uint8_t* buffer) { - uint32_t size; - from_tpm_uint32(buffer + sizeof(uint16_t), &size); - return (int) size; -} - -/* Gets the code field of a TPM command. */ -static inline int tpm_command_code(const uint8_t* buffer) { - uint32_t code; - from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); - return code; -} - -/* Gets the return code field of a TPM result. */ -static inline int tpm_return_code(const uint8_t* buffer) { - return tpm_command_code(buffer); -} - -/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or - * DOING_SELFTEST errors are returned. - */ -static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, - uint8_t* response, int max_length) { - uint32_t response_length = max_length; - uint32_t result; - - result = tpm_send_receive(request, tpm_command_size(request), - response, &response_length); - if (0 != result) { - /* Communication with TPM failed, so response is garbage */ - VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", - tpm_command_code(request), result); - return result; - } - /* Otherwise, use the result code from the response */ - result = tpm_return_code(response); - - /* TODO: add paranoia about returned response_length vs. max_length - * (and possibly expected length from the response header). See - * crosbug.com/17017 */ - - VBDEBUG("TPM: command 0x%x returned 0x%x\n", - tpm_command_code(request), result); - -return result; -} - - -/* Sends a TPM command and gets a response. Returns 0 if success or the TPM - * error code if error. Waits for the self test to complete if needed. */ -uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, - int max_length) { - uint32_t result = tlcl_send_receive_no_retry(request, response, - max_length); - /* If the command fails because the self test has not completed, try it - * again after attempting to ensure that the self test has completed. */ - if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { - result = tlcl_continue_self_test(); - if (result != TPM_SUCCESS) - return result; -#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) - /* Retry only once */ - result = tlcl_send_receive_no_retry(request, response, - max_length); -#else - /* This needs serious testing. The TPM specification says: "iii. - * The caller MUST wait for the actions of TPM_ContinueSelfTest - * to complete before reissuing the command C1." But, if - * ContinueSelfTest is non-blocking, how do we know that the - * actions have completed other than trying again? */ - do { - result = tlcl_send_receive_no_retry(request, response, - max_length); - } while (result == TPM_E_DOING_SELFTEST); -#endif - } - return result; -} - -/* Sends a command and returns the error code. */ -static uint32_t send(const uint8_t* command) { - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - return tlcl_send_receive(command, response, sizeof(response)); -} - -/* Exported functions. */ - -uint32_t tlcl_lib_init(void) { - if (tis_init()) - return VB2_ERROR_UNKNOWN; - if (tis_open()) - return VB2_ERROR_UNKNOWN; - return VB2_SUCCESS; -} - -uint32_t tlcl_startup(void) { - VBDEBUG("TPM: Startup\n"); - return send(tpm_startup_cmd.buffer); -} - -uint32_t tlcl_resume(void) { - VBDEBUG("TPM: Resume\n"); - return send(tpm_resume_cmd.buffer); -} - -uint32_t tlcl_self_test_full(void) -{ - VBDEBUG("TPM: Self test full\n"); - return send(tpm_selftestfull_cmd.buffer); -} - -uint32_t tlcl_continue_self_test(void) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - VBDEBUG("TPM: Continue self test\n"); - /* Call the No Retry version of SendReceive to avoid recursion. */ - return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, - response, sizeof(response)); -} - -uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) -{ - struct s_tpm_nv_definespace_cmd cmd; - VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); - memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); - to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); - return send(cmd.buffer); -} - -uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) -{ - struct s_tpm_nv_write_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - const int total_length = - kTpmRequestHeaderLength + kWriteInfoLength + length; - - VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); - assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); - set_tpm_command_size(cmd.buffer, total_length); - - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); - memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); - - return tlcl_send_receive(cmd.buffer, response, sizeof(response)); -} - -uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) -{ - struct s_tpm_nv_read_cmd cmd; - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t result_length; - uint32_t result; - - VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); - memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); - to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result == TPM_SUCCESS && length > 0) { - uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; - from_tpm_uint32(nv_read_cursor, &result_length); - nv_read_cursor += sizeof(uint32_t); - memcpy(data, nv_read_cursor, result_length); - } - - return result; -} - - -uint32_t tlcl_assert_physical_presence(void) { - VBDEBUG("TPM: Asserting physical presence\n"); - return send(tpm_ppassert_cmd.buffer); -} - -uint32_t tlcl_physical_presence_cmd_enable(void) { - VBDEBUG("TPM: Enable the physical presence command\n"); - return send(tpm_ppenable_cmd.buffer); -} - -uint32_t tlcl_finalize_physical_presence(void) { - VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); - return send(tpm_finalizepp_cmd.buffer); -} - -uint32_t tlcl_set_nv_locked(void) { - VBDEBUG("TPM: Set NV locked\n"); - return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); -} - -uint32_t tlcl_force_clear(void) { - VBDEBUG("TPM: Force clear\n"); - return send(tpm_forceclear_cmd.buffer); -} - -uint32_t tlcl_set_enable(void) { - VBDEBUG("TPM: Enabling TPM\n"); - return send(tpm_physicalenable_cmd.buffer); -} - -uint32_t tlcl_set_deactivated(uint8_t flag) -{ - struct s_tpm_physicalsetdeactivated_cmd cmd; - VBDEBUG("TPM: SetDeactivated(%d)\n", flag); - memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); - *(cmd.buffer + cmd.deactivated) = flag; - return send(cmd.buffer); -} - -uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) -{ - uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; - uint32_t size; - uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, - sizeof(response)); - if (result != TPM_SUCCESS) - return result; - from_tpm_uint32(response + kTpmResponseHeaderLength, &size); - assert(size == sizeof(TPM_PERMANENT_FLAGS)); - memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), - sizeof(TPM_PERMANENT_FLAGS)); - return result; -} - -uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, - uint8_t *nvlocked) -{ - TPM_PERMANENT_FLAGS pflags; - uint32_t result = tlcl_get_permanent_flags(&pflags); - if (result == TPM_SUCCESS) { - if (disable) - *disable = pflags.disable; - if (deactivated) - *deactivated = pflags.deactivated; - if (nvlocked) - *nvlocked = pflags.nvLocked; - VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", - pflags.disable, pflags.deactivated, pflags.nvLocked); - } - return result; -} - -uint32_t tlcl_set_global_lock(void) -{ - uint32_t x; - VBDEBUG("TPM: Set global lock\n"); - return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); -} - -uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, - uint8_t* out_digest) -{ - struct s_tpm_extend_cmd cmd; - uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; - uint32_t result; - - memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); - to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); - memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); - - result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); - if (result != TPM_SUCCESS) - return result; - - if (out_digest) - memcpy(out_digest, response + kTpmResponseHeaderLength, - kPcrDigestLength); - return result; -} diff --git a/src/lib/tlcl_internal.h b/src/lib/tlcl_internal.h deleted file mode 100644 index 8261b0d..0000000 --- a/src/lib/tlcl_internal.h +++ /dev/null @@ -1,61 +0,0 @@ -/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef TPM_LITE_TLCL_INTERNAL_H_ -#define TPM_LITE_TLCL_INTERNAL_H_ - -/* - * These numbers derive from adding the sizes of command fields as shown in the - * TPM commands manual. - */ -#define kTpmRequestHeaderLength 10 -#define kTpmResponseHeaderLength 10 -#define kTpmReadInfoLength 12 -#define kEncAuthLength 20 -#define kPcrDigestLength 20 - - -/* - * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM - * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command - * buffer into a variable. - */ -__attribute__((unused)) -static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { - buffer[0] = (uint8_t)(x >> 24); - buffer[1] = (uint8_t)((x >> 16) & 0xff); - buffer[2] = (uint8_t)((x >> 8) & 0xff); - buffer[3] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { - *x = ((buffer[0] << 24) | - (buffer[1] << 16) | - (buffer[2] << 8) | - buffer[3]); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { - buffer[0] = (uint8_t)(x >> 8); - buffer[1] = (uint8_t)(x & 0xff); -} - -/* - * See comment for above function. - */ -__attribute__((unused)) -static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { - *x = (buffer[0] << 8) | buffer[1]; -} - -#endif /* TPM_LITE_TLCL_INTERNAL_H_ */ diff --git a/src/lib/tlcl_structures.h b/src/lib/tlcl_structures.h deleted file mode 100644 index 36c1bb9..0000000 --- a/src/lib/tlcl_structures.h +++ /dev/null @@ -1,138 +0,0 @@ -/* This file is automatically generated */ - -const struct s_tpm_extend_cmd{ - uint8_t buffer[34]; - uint16_t pcrNum; - uint16_t inDigest; -} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, -10, 14, }; - -const struct s_tpm_get_random_cmd{ - uint8_t buffer[14]; - uint16_t bytesRequested; -} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, -10, }; - -const struct s_tpm_getownership_cmd{ - uint8_t buffer[22]; -} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, -}; - -const struct s_tpm_getpermissions_cmd{ - uint8_t buffer[22]; - uint16_t index; -} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, -18, }; - -const struct s_tpm_getstclearflags_cmd{ - uint8_t buffer[22]; -} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, -}; - -const struct s_tpm_getflags_cmd{ - uint8_t buffer[22]; -} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, -}; - -const struct s_tpm_physicalsetdeactivated_cmd{ - uint8_t buffer[11]; - uint16_t deactivated; -} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, -10, }; - -const struct s_tpm_physicalenable_cmd{ - uint8_t buffer[10]; -} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, -}; - -const struct s_tpm_physicaldisable_cmd{ - uint8_t buffer[10]; -} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, -}; - -const struct s_tpm_forceclear_cmd{ - uint8_t buffer[10]; -} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, -}; - -const struct s_tpm_readpubek_cmd{ - uint8_t buffer[30]; -} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, -}; - -const struct s_tpm_continueselftest_cmd{ - uint8_t buffer[10]; -} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, -}; - -const struct s_tpm_selftestfull_cmd{ - uint8_t buffer[10]; -} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, -}; - -const struct s_tpm_resume_cmd{ - uint8_t buffer[12]; -} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, -}; - -const struct s_tpm_savestate_cmd{ - uint8_t buffer[10]; -} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, -}; - -const struct s_tpm_startup_cmd{ - uint8_t buffer[12]; -} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, -}; - -const struct s_tpm_finalizepp_cmd{ - uint8_t buffer[12]; -} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, -}; - -const struct s_tpm_pplock_cmd{ - uint8_t buffer[12]; -} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, -}; - -const struct s_tpm_ppenable_cmd{ - uint8_t buffer[12]; -} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, -}; - -const struct s_tpm_ppassert_cmd{ - uint8_t buffer[12]; -} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, -}; - -const struct s_tpm_pcr_read_cmd{ - uint8_t buffer[14]; - uint16_t pcrNum; -} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, -10, }; - -const struct s_tpm_nv_read_cmd{ - uint8_t buffer[22]; - uint16_t index; - uint16_t length; -} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, -10, 18, }; - -const struct s_tpm_nv_write_cmd{ - uint8_t buffer[256]; - uint16_t index; - uint16_t length; - uint16_t data; -} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, -10, 18, 22, }; - -const struct s_tpm_nv_definespace_cmd{ - uint8_t buffer[101]; - uint16_t index; - uint16_t perm; - uint16_t size; -} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, -12, 70, 77, }; - -const int kWriteInfoLength = 12; -const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/lib/tpm/Makefile.inc b/src/lib/tpm/Makefile.inc new file mode 100644 index 0000000..81a3eb9 --- /dev/null +++ b/src/lib/tpm/Makefile.inc @@ -0,0 +1,13 @@ +ifneq ($(CONFIG_CHROMEOS),y) +romstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +ramstage-$(CONFIG_LPC_TPM) += tss.c tspi.c +else +romstage-$(CONFIG_LPC_TPM) += tspi.c +endif + +ifeq ($(MOCK_TPM),1) +libverstage-y += mocked_tss.c +else +libverstage-y += tss.c +endif + diff --git a/src/lib/tpm/mocked_tss.c b/src/lib/tpm/mocked_tss.c new file mode 100644 index 0000000..ce956ad --- /dev/null +++ b/src/lib/tpm/mocked_tss.c @@ -0,0 +1,136 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The ChromiumOS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <tpm/tss.h> + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +uint32_t tlcl_lib_init(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_resume(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_continue_self_test(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_set_global_lock(void) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + VBDEBUG("MOCK_TPM: %s\n", __func__); + return TPM_E_NO_DEVICE; +} diff --git a/src/lib/tpm/tspi.c b/src/lib/tpm/tspi.c new file mode 100644 index 0000000..00848f1 --- /dev/null +++ b/src/lib/tpm/tspi.c @@ -0,0 +1,95 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 The Chromium OS Authors. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc. + */ + +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> + +#include <tpm/tss.h> +#include <tpm/tspi.h> + +void init_tpm(int s3resume) +{ + u32 result = 0; + + if (CONFIG_TPM_DEACTIVATE) { + printk(BIOS_SPEW, "TPM: Deactivate\n"); + + result = tlcl_set_deactivated(1); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + /* Doing TPM startup when we're not coming in on the S3 resume path + * saves us roughly 20ms in boot time only. This does not seem to + * be worth an API change to vboot_reference-firmware right now, so + * let's keep the code around, but just bail out early: + */ + if (s3resume ? CONFIG_NO_TPM_RESUME + : CONFIG_SKIP_TPM_STARTUP_ON_NORMAL_BOOT) + return; + + printk(BIOS_DEBUG, "TPM initialization.\n"); + + if(tlcl_lib_init() != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + + if (s3resume) { + /* S3 Resume */ + printk(BIOS_SPEW, "TPM: Resume\n"); + + result = tlcl_resume(); + if(result == TPM_E_INVALID_POSTINIT) { + /* We're on a platform where the TPM maintains power + * in S3, so it's already initialized. + */ + printk(BIOS_DEBUG, "TPM: Already initialized.\n"); + return; + } else if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } else { + printk(BIOS_SPEW, "TPM: Startup\n"); + result = tlcl_startup(); + if(result != TPM_SUCCESS) { + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + return; + } + } + + if (result == TPM_SUCCESS) { + printk(BIOS_SPEW, "TPM: OK.\n"); + return; + } + + printk(BIOS_ERR, "TPM: Error code 0x%x.\n", result); + + if (CONFIG_TPM_INIT_FAILURE_IS_FATAL) { + printk(BIOS_ERR, "Hard reset!\n"); + post_code(POST_TPM_FAILURE); + if (IS_ENABLED(CONFIG_CONSOLE_CBMEM_DUMP_TO_UART)) + cbmem_dump_console(); + hard_reset(); + } +} \ No newline at end of file diff --git a/src/lib/tpm/tss.c b/src/lib/tpm/tss.c new file mode 100644 index 0000000..fed9d45 --- /dev/null +++ b/src/lib/tpm/tss.c @@ -0,0 +1,331 @@ +/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* A lightweight TPM command library. + * + * The general idea is that TPM commands are array of bytes whose + * fields are mostly compile-time constant. The goal is to build much + * of the commands at compile time (or build time) and change some of + * the fields at run time as needed. The code in + * utility/tlcl_generator.c builds structures containing the commands, + * as well as the offsets of the fields that need to be set at run + * time. + */ + +#include <assert.h> +#include <string.h> +#include <tpm/tss.h> +#include <pc80/tpm.h> +#include <console/cbmem_console.h> +#include <console/console.h> +#include <reset.h> +#include "tss_internal.h" +#include "tss_structures.h" + +#ifdef FOR_TEST +#include <stdio.h> +#define VBDEBUG(format, args...) printf(format, ## args) +#else +#include <console/console.h> +#define VBDEBUG(format, args...) printk(BIOS_DEBUG, format, ## args) +#endif + +#define UNKNOWN_ERROR 0x10000001 // see VBOOT2 error codes.. + +static int tpm_send_receive(const uint8_t *request, + uint32_t request_length, + uint8_t *response, + uint32_t *response_length) +{ + size_t len = *response_length; + if (tis_sendrecv(request, request_length, response, &len)) + return UNKNOWN_ERROR; + /* check 64->32bit overflow and (re)check response buffer overflow */ + if (len > *response_length) + return UNKNOWN_ERROR; + *response_length = len; + return TPM_SUCCESS; +} + +/* Sets the size field of a TPM command. */ +static inline void set_tpm_command_size(uint8_t* buffer, uint32_t size) { + to_tpm_uint32(buffer + sizeof(uint16_t), size); +} + +/* Gets the size field of a TPM command. */ +__attribute__((unused)) +static inline int tpm_command_size(const uint8_t* buffer) { + uint32_t size; + from_tpm_uint32(buffer + sizeof(uint16_t), &size); + return (int) size; +} + +/* Gets the code field of a TPM command. */ +static inline int tpm_command_code(const uint8_t* buffer) { + uint32_t code; + from_tpm_uint32(buffer + sizeof(uint16_t) + sizeof(uint32_t), &code); + return code; +} + +/* Gets the return code field of a TPM result. */ +static inline int tpm_return_code(const uint8_t* buffer) { + return tpm_command_code(buffer); +} + +/* Like TlclSendReceive below, but do not retry if NEEDS_SELFTEST or + * DOING_SELFTEST errors are returned. + */ +static uint32_t tlcl_send_receive_no_retry(const uint8_t* request, + uint8_t* response, int max_length) { + uint32_t response_length = max_length; + uint32_t result; + + result = tpm_send_receive(request, tpm_command_size(request), + response, &response_length); + if (0 != result) { + /* Communication with TPM failed, so response is garbage */ + VBDEBUG("TPM: command 0x%x send/receive failed: 0x%x\n", + tpm_command_code(request), result); + return result; + } + /* Otherwise, use the result code from the response */ + result = tpm_return_code(response); + + /* TODO: add paranoia about returned response_length vs. max_length + * (and possibly expected length from the response header). See + * crosbug.com/17017 */ + + VBDEBUG("TPM: command 0x%x returned 0x%x\n", + tpm_command_code(request), result); + +return result; +} + + +/* Sends a TPM command and gets a response. Returns 0 if success or the TPM + * error code if error. Waits for the self test to complete if needed. */ +uint32_t tlcl_send_receive(const uint8_t* request, uint8_t* response, + int max_length) { + uint32_t result = tlcl_send_receive_no_retry(request, response, + max_length); + /* If the command fails because the self test has not completed, try it + * again after attempting to ensure that the self test has completed. */ + if (result == TPM_E_NEEDS_SELFTEST || result == TPM_E_DOING_SELFTEST) { + result = tlcl_continue_self_test(); + if (result != TPM_SUCCESS) + return result; +#if defined(TPM_BLOCKING_CONTINUESELFTEST) || defined(VB_RECOVERY_MODE) + /* Retry only once */ + result = tlcl_send_receive_no_retry(request, response, + max_length); +#else + /* This needs serious testing. The TPM specification says: "iii. + * The caller MUST wait for the actions of TPM_ContinueSelfTest + * to complete before reissuing the command C1." But, if + * ContinueSelfTest is non-blocking, how do we know that the + * actions have completed other than trying again? */ + do { + result = tlcl_send_receive_no_retry(request, response, + max_length); + } while (result == TPM_E_DOING_SELFTEST); +#endif + } + return result; +} + +/* Sends a command and returns the error code. */ +static uint32_t send(const uint8_t* command) { + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + return tlcl_send_receive(command, response, sizeof(response)); +} + +/* Exported functions. */ + +uint32_t tlcl_lib_init(void) { + if (tis_init()) + return UNKNOWN_ERROR; + if (tis_open()) + return UNKNOWN_ERROR; + return TPM_SUCCESS; +} + +uint32_t tlcl_startup(void) { + VBDEBUG("TPM: Startup\n"); + return send(tpm_startup_cmd.buffer); +} + +uint32_t tlcl_resume(void) { + VBDEBUG("TPM: Resume\n"); + return send(tpm_resume_cmd.buffer); +} + +uint32_t tlcl_self_test_full(void) +{ + VBDEBUG("TPM: Self test full\n"); + return send(tpm_selftestfull_cmd.buffer); +} + +uint32_t tlcl_continue_self_test(void) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + VBDEBUG("TPM: Continue self test\n"); + /* Call the No Retry version of SendReceive to avoid recursion. */ + return tlcl_send_receive_no_retry(tpm_continueselftest_cmd.buffer, + response, sizeof(response)); +} + +uint32_t tlcl_define_space(uint32_t index, uint32_t perm, uint32_t size) +{ + struct s_tpm_nv_definespace_cmd cmd; + VBDEBUG("TPM: TlclDefineSpace(0x%x, 0x%x, %d)\n", index, perm, size); + memcpy(&cmd, &tpm_nv_definespace_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.perm, perm); + to_tpm_uint32(cmd.buffer + tpm_nv_definespace_cmd.size, size); + return send(cmd.buffer); +} + +uint32_t tlcl_write(uint32_t index, const void* data, uint32_t length) +{ + struct s_tpm_nv_write_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + const int total_length = + kTpmRequestHeaderLength + kWriteInfoLength + length; + + VBDEBUG("TPM: tlcl_write(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_write_cmd, sizeof(cmd)); + assert(total_length <= TPM_LARGE_ENOUGH_COMMAND_SIZE); + set_tpm_command_size(cmd.buffer, total_length); + + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_write_cmd.length, length); + memcpy(cmd.buffer + tpm_nv_write_cmd.data, data, length); + + return tlcl_send_receive(cmd.buffer, response, sizeof(response)); +} + +uint32_t tlcl_read(uint32_t index, void* data, uint32_t length) +{ + struct s_tpm_nv_read_cmd cmd; + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t result_length; + uint32_t result; + + VBDEBUG("TPM: tlcl_read(0x%x, %d)\n", index, length); + memcpy(&cmd, &tpm_nv_read_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.index, index); + to_tpm_uint32(cmd.buffer + tpm_nv_read_cmd.length, length); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result == TPM_SUCCESS && length > 0) { + uint8_t* nv_read_cursor = response + kTpmResponseHeaderLength; + from_tpm_uint32(nv_read_cursor, &result_length); + nv_read_cursor += sizeof(uint32_t); + memcpy(data, nv_read_cursor, result_length); + } + + return result; +} + + +uint32_t tlcl_assert_physical_presence(void) { + VBDEBUG("TPM: Asserting physical presence\n"); + return send(tpm_ppassert_cmd.buffer); +} + +uint32_t tlcl_physical_presence_cmd_enable(void) { + VBDEBUG("TPM: Enable the physical presence command\n"); + return send(tpm_ppenable_cmd.buffer); +} + +uint32_t tlcl_finalize_physical_presence(void) { + VBDEBUG("TPM: Enable PP cmd, disable HW pp, and set lifetime lock\n"); + return send(tpm_finalizepp_cmd.buffer); +} + +uint32_t tlcl_set_nv_locked(void) { + VBDEBUG("TPM: Set NV locked\n"); + return tlcl_define_space(TPM_NV_INDEX_LOCK, 0, 0); +} + +uint32_t tlcl_force_clear(void) { + VBDEBUG("TPM: Force clear\n"); + return send(tpm_forceclear_cmd.buffer); +} + +uint32_t tlcl_set_enable(void) { + VBDEBUG("TPM: Enabling TPM\n"); + return send(tpm_physicalenable_cmd.buffer); +} + +uint32_t tlcl_set_deactivated(uint8_t flag) +{ + struct s_tpm_physicalsetdeactivated_cmd cmd; + VBDEBUG("TPM: SetDeactivated(%d)\n", flag); + memcpy(&cmd, &tpm_physicalsetdeactivated_cmd, sizeof(cmd)); + *(cmd.buffer + cmd.deactivated) = flag; + return send(cmd.buffer); +} + +uint32_t tlcl_get_permanent_flags(TPM_PERMANENT_FLAGS* pflags) +{ + uint8_t response[TPM_LARGE_ENOUGH_COMMAND_SIZE]; + uint32_t size; + uint32_t result = tlcl_send_receive(tpm_getflags_cmd.buffer, response, + sizeof(response)); + if (result != TPM_SUCCESS) + return result; + from_tpm_uint32(response + kTpmResponseHeaderLength, &size); + assert(size == sizeof(TPM_PERMANENT_FLAGS)); + memcpy(pflags, response + kTpmResponseHeaderLength + sizeof(size), + sizeof(TPM_PERMANENT_FLAGS)); + return result; +} + +uint32_t tlcl_get_flags(uint8_t* disable, uint8_t* deactivated, + uint8_t *nvlocked) +{ + TPM_PERMANENT_FLAGS pflags; + uint32_t result = tlcl_get_permanent_flags(&pflags); + if (result == TPM_SUCCESS) { + if (disable) + *disable = pflags.disable; + if (deactivated) + *deactivated = pflags.deactivated; + if (nvlocked) + *nvlocked = pflags.nvLocked; + VBDEBUG("TPM: flags disable=%d, deactivated=%d, nvlocked=%d\n", + pflags.disable, pflags.deactivated, pflags.nvLocked); + } + return result; +} + +uint32_t tlcl_set_global_lock(void) +{ + uint32_t x; + VBDEBUG("TPM: Set global lock\n"); + return tlcl_write(TPM_NV_INDEX0, (uint8_t*) &x, 0); +} + +uint32_t tlcl_extend(int pcr_num, const uint8_t* in_digest, + uint8_t* out_digest) +{ + struct s_tpm_extend_cmd cmd; + uint8_t response[kTpmResponseHeaderLength + kPcrDigestLength]; + uint32_t result; + + memcpy(&cmd, &tpm_extend_cmd, sizeof(cmd)); + to_tpm_uint32(cmd.buffer + tpm_extend_cmd.pcrNum, pcr_num); + memcpy(cmd.buffer + cmd.inDigest, in_digest, kPcrDigestLength); + + result = tlcl_send_receive(cmd.buffer, response, sizeof(response)); + if (result != TPM_SUCCESS) + return result; + + if (out_digest) + memcpy(out_digest, response + kTpmResponseHeaderLength, + kPcrDigestLength); + return result; +} \ No newline at end of file diff --git a/src/lib/tpm/tss_internal.h b/src/lib/tpm/tss_internal.h new file mode 100644 index 0000000..bc56b12 --- /dev/null +++ b/src/lib/tpm/tss_internal.h @@ -0,0 +1,61 @@ +/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef LIB_TPM_TSS_INTERNAL_H +#define LIB_TPM_TSS_INTERNAL_H + +/* + * These numbers derive from adding the sizes of command fields as shown in the + * TPM commands manual. + */ +#define kTpmRequestHeaderLength 10 +#define kTpmResponseHeaderLength 10 +#define kTpmReadInfoLength 12 +#define kEncAuthLength 20 +#define kPcrDigestLength 20 + + +/* + * Conversion functions. to_tpm_TYPE puts a value of type TYPE into a TPM + * command buffer. from_tpm_TYPE gets a value of type TYPE from a TPM command + * buffer into a variable. + */ +__attribute__((unused)) +static inline void to_tpm_uint32(uint8_t *buffer, uint32_t x) { + buffer[0] = (uint8_t)(x >> 24); + buffer[1] = (uint8_t)((x >> 16) & 0xff); + buffer[2] = (uint8_t)((x >> 8) & 0xff); + buffer[3] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint32(const uint8_t *buffer, uint32_t *x) { + *x = ((buffer[0] << 24) | + (buffer[1] << 16) | + (buffer[2] << 8) | + buffer[3]); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void to_tpm_uint16(uint8_t *buffer, uint16_t x) { + buffer[0] = (uint8_t)(x >> 8); + buffer[1] = (uint8_t)(x & 0xff); +} + +/* + * See comment for above function. + */ +__attribute__((unused)) +static inline void from_tpm_uint16(const uint8_t *buffer, uint16_t *x) { + *x = (buffer[0] << 8) | buffer[1]; +} + +#endif /* LIB_TPM_TSS_INTERNAL_H */ \ No newline at end of file diff --git a/src/lib/tpm/tss_structures.h b/src/lib/tpm/tss_structures.h new file mode 100644 index 0000000..36c1bb9 --- /dev/null +++ b/src/lib/tpm/tss_structures.h @@ -0,0 +1,138 @@ +/* This file is automatically generated */ + +const struct s_tpm_extend_cmd{ + uint8_t buffer[34]; + uint16_t pcrNum; + uint16_t inDigest; +} tpm_extend_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14, }, +10, 14, }; + +const struct s_tpm_get_random_cmd{ + uint8_t buffer[14]; + uint16_t bytesRequested; +} tpm_get_random_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x46, }, +10, }; + +const struct s_tpm_getownership_cmd{ + uint8_t buffer[22]; +} tpm_getownership_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x11, }, +}; + +const struct s_tpm_getpermissions_cmd{ + uint8_t buffer[22]; + uint16_t index; +} tpm_getpermissions_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x11, 0x0, 0x0, 0x0, 0x4, }, +18, }; + +const struct s_tpm_getstclearflags_cmd{ + uint8_t buffer[22]; +} tpm_getstclearflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x9, }, +}; + +const struct s_tpm_getflags_cmd{ + uint8_t buffer[22]; +} tpm_getflags_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x1, 0x8, }, +}; + +const struct s_tpm_physicalsetdeactivated_cmd{ + uint8_t buffer[11]; + uint16_t deactivated; +} tpm_physicalsetdeactivated_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72, }, +10, }; + +const struct s_tpm_physicalenable_cmd{ + uint8_t buffer[10]; +} tpm_physicalenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f, }, +}; + +const struct s_tpm_physicaldisable_cmd{ + uint8_t buffer[10]; +} tpm_physicaldisable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70, }, +}; + +const struct s_tpm_forceclear_cmd{ + uint8_t buffer[10]; +} tpm_forceclear_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d, }, +}; + +const struct s_tpm_readpubek_cmd{ + uint8_t buffer[30]; +} tpm_readpubek_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c, }, +}; + +const struct s_tpm_continueselftest_cmd{ + uint8_t buffer[10]; +} tpm_continueselftest_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53, }, +}; + +const struct s_tpm_selftestfull_cmd{ + uint8_t buffer[10]; +} tpm_selftestfull_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50, }, +}; + +const struct s_tpm_resume_cmd{ + uint8_t buffer[12]; +} tpm_resume_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x2, }, +}; + +const struct s_tpm_savestate_cmd{ + uint8_t buffer[10]; +} tpm_savestate_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x98, }, +}; + +const struct s_tpm_startup_cmd{ + uint8_t buffer[12]; +} tpm_startup_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x1, }, +}; + +const struct s_tpm_finalizepp_cmd{ + uint8_t buffer[12]; +} tpm_finalizepp_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, }, +}; + +const struct s_tpm_pplock_cmd{ + uint8_t buffer[12]; +} tpm_pplock_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x4, }, +}; + +const struct s_tpm_ppenable_cmd{ + uint8_t buffer[12]; +} tpm_ppenable_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x20, }, +}; + +const struct s_tpm_ppassert_cmd{ + uint8_t buffer[12]; +} tpm_ppassert_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x8, }, +}; + +const struct s_tpm_pcr_read_cmd{ + uint8_t buffer[14]; + uint16_t pcrNum; +} tpm_pcr_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15, }, +10, }; + +const struct s_tpm_nv_read_cmd{ + uint8_t buffer[22]; + uint16_t index; + uint16_t length; +} tpm_nv_read_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf, }, +10, 18, }; + +const struct s_tpm_nv_write_cmd{ + uint8_t buffer[256]; + uint16_t index; + uint16_t length; + uint16_t data; +} tpm_nv_write_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd, }, +10, 18, 22, }; + +const struct s_tpm_nv_definespace_cmd{ + uint8_t buffer[101]; + uint16_t index; + uint16_t perm; + uint16_t size; +} tpm_nv_definespace_cmd = {{0x0, 0xc1, 0x0, 0x0, 0x0, 0x65, 0x0, 0x0, 0x0, 0xcc, 0x0, 0x18, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x3, 0, 0, 0, 0x1f, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x0, 0x17, }, +12, 70, 77, }; + +const int kWriteInfoLength = 12; +const int kNvDataPublicPermissionsOffset = 60; diff --git a/src/mainboard/google/link/romstage.c b/src/mainboard/google/link/romstage.c index e9b4a09..1837d50 100644 --- a/src/mainboard/google/link/romstage.c +++ b/src/mainboard/google/link/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/msr.h> #include <halt.h> #include "gpio.h" -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <southbridge/intel/bd82x6x/chip.h> diff --git a/src/mainboard/google/parrot/romstage.c b/src/mainboard/google/parrot/romstage.c index a947c48..209611e 100644 --- a/src/mainboard/google/parrot/romstage.c +++ b/src/mainboard/google/parrot/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <cbfs.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "ec/compal/ene932/ec.h" static void pch_enable_lpc(void) diff --git a/src/mainboard/google/stout/romstage.c b/src/mainboard/google/stout/romstage.c index 31b61e2..9d9f761 100644 --- a/src/mainboard/google/stout/romstage.c +++ b/src/mainboard/google/stout/romstage.c @@ -40,7 +40,7 @@ #include <halt.h> #include "gpio.h" #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <cbfs.h> #include <ec/quanta/it8518/ec.h> #include "ec.h" diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c index bcf498b..d612d67 100644 --- a/src/mainboard/intel/emeraldlake2/romstage.c +++ b/src/mainboard/intel/emeraldlake2/romstage.c @@ -39,7 +39,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #define SIO_PORT 0x164e diff --git a/src/mainboard/lenovo/t530/Kconfig b/src/mainboard/lenovo/t530/Kconfig index f144afb..6aef758 100644 --- a/src/mainboard/lenovo/t530/Kconfig +++ b/src/mainboard/lenovo/t530/Kconfig @@ -23,6 +23,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy select MAINBOARD_DO_NATIVE_VGA_INIT # default to native vga init select ENABLE_VMX select MAINBOARD_HAS_LPC_TPM + select MAINBOARD_HAS_CHROMEOS # Workaround for EC/KBC IRQ1. select SERIRQ_CONTINUOUS_MODE diff --git a/src/mainboard/lenovo/x201/romstage.c b/src/mainboard/lenovo/x201/romstage.c index 1e335d3..bb49b49 100644 --- a/src/mainboard/lenovo/x201/romstage.c +++ b/src/mainboard/lenovo/x201/romstage.c @@ -37,7 +37,7 @@ #include <timestamp.h> #include <arch/acpi.h> #include <cbmem.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #include "dock.h" diff --git a/src/mainboard/samsung/lumpy/romstage.c b/src/mainboard/samsung/lumpy/romstage.c index 015ae08..cea088d 100644 --- a/src/mainboard/samsung/lumpy/romstage.c +++ b/src/mainboard/samsung/lumpy/romstage.c @@ -32,7 +32,7 @@ #include <cbmem.h> #include <console/console.h> #include <bootmode.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <northbridge/intel/sandybridge/sandybridge.h> #include <northbridge/intel/sandybridge/raminit.h> #include <southbridge/intel/bd82x6x/pch.h> diff --git a/src/mainboard/samsung/stumpy/romstage.c b/src/mainboard/samsung/stumpy/romstage.c index 161c8d1..2906815 100644 --- a/src/mainboard/samsung/stumpy/romstage.c +++ b/src/mainboard/samsung/stumpy/romstage.c @@ -41,7 +41,7 @@ #include <cpu/x86/bist.h> #include <cpu/x86/msr.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "gpio.h" #if CONFIG_DRIVERS_UART_8250IO #include <superio/smsc/lpc47n207/lpc47n207.h> diff --git a/src/northbridge/intel/sandybridge/romstage_native.c b/src/northbridge/intel/sandybridge/romstage_native.c index 45f671c..13696bd 100644 --- a/src/northbridge/intel/sandybridge/romstage_native.c +++ b/src/northbridge/intel/sandybridge/romstage_native.c @@ -32,7 +32,7 @@ #include <device/pci_def.h> #include <device/device.h> #include <halt.h> -#include <tpm.h> +#include <tpm/tspi.h> #include "raminit_native.h" #include <northbridge/intel/sandybridge/chip.h> #include "southbridge/intel/bd82x6x/pch.h" diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index 1b93eb6..108faf3 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -33,7 +33,7 @@ #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <vendorcode/google/chromeos/chromeos.h> #include <soc/gpio.h> #include <soc/iomap.h> diff --git a/src/soc/intel/braswell/romstage/romstage.c b/src/soc/intel/braswell/romstage/romstage.c index 64a3dee..fa9a815 100644 --- a/src/soc/intel/braswell/romstage/romstage.c +++ b/src/soc/intel/braswell/romstage/romstage.c @@ -50,7 +50,7 @@ #include <soc/romstage.h> #include <soc/smm.h> #include <soc/spi.h> -#include <tpm.h> +#include <tpm/tsṕi.h> void program_base_addresses(void) { diff --git a/src/soc/intel/broadwell/romstage/romstage.c b/src/soc/intel/broadwell/romstage/romstage.c index 27fb0f2..166ee30 100644 --- a/src/soc/intel/broadwell/romstage/romstage.c +++ b/src/soc/intel/broadwell/romstage/romstage.c @@ -29,7 +29,7 @@ #include <cbmem.h> #include <cpu/x86/mtrr.h> #include <elog.h> -#include <tpm.h> +#include <tpm/tspi.h> #include <romstage_handoff.h> #include <stage_cache.h> #include <timestamp.h> diff --git a/src/vendorcode/google/chromeos/vboot2/antirollback.c b/src/vendorcode/google/chromeos/vboot2/antirollback.c index 407b19c..f947c35 100644 --- a/src/vendorcode/google/chromeos/vboot2/antirollback.c +++ b/src/vendorcode/google/chromeos/vboot2/antirollback.c @@ -9,8 +9,8 @@ #include <antirollback.h> #include <stdlib.h> #include <string.h> -#include <tpm_lite/tlcl.h> -#include <tpm_lite/tss_constants.h> +#include <tpm/tss.h> +#include <tpm/tss_constants.h> #include <vb2_api.h> #ifndef offsetof

1 0

Patch set updated for coreboot: cpu/amd/model_10xxx: Do not initialize SMM memory if SMM is disabled
by Timothy Pearson 13 Aug '15

13 Aug '15

Timothy Pearson (tpearson(a)raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/11211 -gerrit commit 01727632fbc6371a81e60ce77e0df3e1a1cdaa77 Author: Timothy Pearson <tpearson(a)raptorengineeringinc.com> Date: Wed Aug 12 11:19:10 2015 -0500 cpu/amd/model_10xxx: Do not initialize SMM memory if SMM is disabled In the wake of the recent Intel "Memoy Sinkhole" exploit a code review of the AMD SMM code was undertaken. While native Family 10h support does not appear to be affected by the same SMM flaw, it also does not require SMM to function. Therefore, the SMM memory range initialization should only be executed if SMM will be used on the target platform. Change-Id: I6531908a7724933e4ba5a2bbefeb89356197e8fd Signed-off-by: Timothy Pearson <tpearson(a)raptorengineeringinc.com> --- src/cpu/amd/model_10xxx/model_10xxx_init.c | 34 ++++++++++++++++++++++-------- 1 file changed, 25 insertions(+), 9 deletions(-) diff --git a/src/cpu/amd/model_10xxx/model_10xxx_init.c b/src/cpu/amd/model_10xxx/model_10xxx_init.c index c17f335..590b89d 100644 --- a/src/cpu/amd/model_10xxx/model_10xxx_init.c +++ b/src/cpu/amd/model_10xxx/model_10xxx_init.c @@ -99,15 +99,31 @@ static void model_10xxx_init(device_t dev) msr.hi &= ~(1 << (35-32)); wrmsr(BU_CFG2_MSR, msr); - /* Set SMM base address for this CPU */ - msr = rdmsr(SMM_BASE_MSR); - msr.lo = SMM_BASE - (lapicid() * 0x400); - wrmsr(SMM_BASE_MSR, msr); - - /* Enable the SMM memory window */ - msr = rdmsr(SMM_MASK_MSR); - msr.lo |= (1 << 0); /* Enable ASEG SMRAM Range */ - wrmsr(SMM_MASK_MSR, msr); + if (IS_ENABLED(CONFIG_HAVE_SMI_HANDLER)) { + printk(BIOS_DEBUG, "Initializing SMM ASeg memory\n"); + + /* Set SMM base address for this CPU */ + msr = rdmsr(SMM_BASE_MSR); + msr.lo = SMM_BASE - (lapicid() * 0x400); + wrmsr(SMM_BASE_MSR, msr); + + /* Enable the SMM memory window */ + msr = rdmsr(SMM_MASK_MSR); + msr.lo |= (1 << 0); /* Enable ASEG SMRAM Range */ + wrmsr(SMM_MASK_MSR, msr); + } else { + printk(BIOS_DEBUG, "Disabling SMM ASeg memory\n"); + + /* Set SMM base address for this CPU */ + msr = rdmsr(SMM_BASE_MSR); + msr.lo = SMM_BASE - (lapicid() * 0x400); + wrmsr(SMM_BASE_MSR, msr); + + /* Disable the SMM memory window */ + msr.hi = 0x0; + msr.lo = 0x0; + wrmsr(SMM_MASK_MSR, msr); + } /* Set SMMLOCK to avoid exploits messing with SMM */ msr = rdmsr(HWCR_MSR);

1 0

Patch merged into coreboot/master: libpayload: usb: don't prematurely free the usb device
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit e3260ec29a0bce2d57ba66b99ea1d87a56e1e18a Author: Aaron Durbin <adurbin(a)chromium.org> Date: Fri Jul 31 17:08:00 2015 -0500 libpayload: usb: don't prematurely free the usb device Before the controller's destroy_device() could interrogate the usbdev_t object usb_detach_device() was freeing and NULLing out the pointer. That results in all callers who needed that object to start accessing random bits of memory. This eventually led into free()ing memory it shouldn't which corrupted the allocator's state. Eventually, all forward progress was lost by way of a single ended linked list turning into a circular list. The culprit seems to be a bad merge in commit e00ba21. BUG=chrome-os-partner:43419 BRANCH=None TEST=Can boot into OS now w/o "hanging" on glados. Original-Change-Id: I86dcaa1dbaf112ac6782e90dad40f0932f273a1f Original-Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/290048 Original-Reviewed-by: Julius Werner <jwerner(a)chromium.org> Change-Id: I9135eb0f798bf7dbeccc7a033c3f8471720a0de5 Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Reviewed-on: http://review.coreboot.org/11173 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11173 for details. -gerrit

1 0

Patch merged into coreboot/master: skylake: fix serial port with new code base
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit e33a1724b34d839fae16836a5bdde4d53a788c15 Author: Aaron Durbin <adurbin(a)chromium.org> Date: Thu Jul 30 16:52:56 2015 -0500 skylake: fix serial port with new code base Many Kconfig options changed in coreboot.org since skylake was first started. Fix Kconfig option name changes, and also provide a common option, UART_DEBUG that can be selected to select all the necessary options. Note: It's still a requirement to manually unset the 8250IO option because that's unconditionally set. BUG=chrome-os-partner:43419 BUG=chrome-os-partner:43463 BRANCH=None TEST=Built glados. Booted into kernel. Kernel reboots somewhere. Original-Change-Id: I9e6549ea0f1d6b9ffe64a73856ec87b5bc7b7091 Original-Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/289951 Original-Reviewed-by: Duncan Laurie <dlaurie(a)chromium.org> Change-Id: I0e6b492d7279cc35d4fb3ac17fd727177adce39d Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Reviewed-on: http://review.coreboot.org/11172 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11172 for details. -gerrit

1 0

Patch merged into coreboot/master: glados: Enable wake from EC via LAN_WAKE#
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit 14bb36c5ca08a646dd376d81199a6f22aa66b3d4 Author: Duncan Laurie <dlaurie(a)chromium.org> Date: Fri Jul 24 15:39:31 2015 -0700 glados: Enable wake from EC via LAN_WAKE# Enable the Deep Sx pins to allow wake from the EC via LAN_WAKE#. Report the EC wake pin LAN_WAKE as GPE[112]. BUG=chrome-os-partner:43079 BRANCH=none TEST=suspend/resume on glados with wake from keyboard Original-Change-Id: I99664e1e406d15e7460046a6168cbd3a377aaca4 Original-Signed-off-by: Duncan Laurie <dlaurie(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/288921 Original-Reviewed-by: Aaron Durbin <adurbin(a)chromium.org> Change-Id: I19db144ed5db183f47af03340886a5e770af8bc8 Signed-off-by: Duncan Laurie <dlaurie(a)chromium.org> Reviewed-on: http://review.coreboot.org/11171 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11171 for details. -gerrit

1 0

Patch merged into coreboot/master: skylake: Add Deep Sx configuration for wake pins
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit edf1cb78e29edd768ef9641093bb3eae3c8c91d7 Author: Duncan Laurie <dlaurie(a)chromium.org> Date: Fri Jul 24 15:37:13 2015 -0700 skylake: Add Deep Sx configuration for wake pins Add support for enabling various pins in Deep Sx by setting a register in the mainboard devicetree. BUG=chrome-os-partner:43079 BRANCH=none TEST=build and boot on glados Original-Change-Id: I1b4fb51f72b88bdc49096268bdd781750dcd089d Original-Signed-off-by: Duncan Laurie <dlaurie(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/288920 Original-Reviewed-by: Aaron Durbin <adurbin(a)chromium.org> Change-Id: I7555a92fecc6e78b579ec0bc18da202cb0c824e2 Signed-off-by: Duncan Laurie <dlaurie(a)chromium.org> Reviewed-on: http://review.coreboot.org/11170 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11170 for details. -gerrit

1 0

Patch merged into coreboot/master: uart8250mem: provide uart_fill_lb()
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit 4f7cf3a4466df8f84ef352d2d496a2e7a075ac13 Author: Aaron Durbin <adurbin(a)chromium.org> Date: Thu Jul 30 16:47:18 2015 -0500 uart8250mem: provide uart_fill_lb() There was no implementation for uart_fill_lb() in the 8250mem driver. Rectify this so when 8250MEM and CONSOLE_SERIAL are employed then the build doesn't fail. BUG=chrome-os-partner:43419 BRANCH=None TEST=Built with glados using 8250MEM Original-Change-Id: I35d6b15e47989c1854ddcee9c6d46711edffaf3e Original-Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/289899 Original-Reviewed-by: Patrick Georgi <pgeorgi(a)chromium.org> Change-Id: I972b069a4def666f509268816de91ed6c0f655d9 Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Reviewed-on: http://review.coreboot.org/11169 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11169 for details. -gerrit

1 0

Patch merged into coreboot/master: skylake: remove CBFS_SIZE option in SoC directory
by gerrit＠coreboot.org 13 Aug '15

13 Aug '15

the following patch was just integrated into master: commit 2ca12740716fd70efb50f97b41c539ece43ff66a Author: Aaron Durbin <adurbin(a)chromium.org> Date: Thu Jul 30 13:34:29 2015 -0500 skylake: remove CBFS_SIZE option in SoC directory CBFS_SIZE is living as a mainboard attribute. Because of the Kconfig include ordering the SoC *cannot* set the default. Remove from the soc Kconfig and add a default Kconfig for SOC_INTEL_SKYLAKE. BUG=chrome-os-partner:43419 BRANCH=None TEST=built glados Original-Change-Id: I8808177b573ce8e2158c9e598dbfea9ff84b97c7 Original-Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/289833 Original-Reviewed-by: Martin Roth <martinroth(a)google.com> Change-Id: Icf52d7861eee016a35be899e5486deb0924a0f3c Signed-off-by: Aaron Durbin <adurbin(a)chromium.org> Reviewed-on: http://review.coreboot.org/11168 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi(a)google.com> See http://review.coreboot.org/11168 for details. -gerrit

1 0

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coreboot-gerrit August 2015