March 2022 - coreboot-gerrit - mail.coreboot.org

Change in coreboot[master]: Documentation: added more payload links and descriptions
by Zoltan Baldaszti (Code Review) Aug. 7, 2023

Aug. 7, 2023

Zoltan Baldaszti has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/45829 ) Change subject: Documentation: added more payload links and descriptions ...................................................................... Documentation: added more payload links and descriptions Change-Id: I13c10edbc7fbb7017641ab025982c658cbeb3610 Signed-off-by: Zoltan Baldaszti <bztemail(a)gmail.com> --- M Documentation/payloads.md 1 file changed, 35 insertions(+), 7 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/45829/1 diff --git a/Documentation/payloads.md b/Documentation/payloads.md index eee841e..bee8393 100644 --- a/Documentation/payloads.md +++ b/Documentation/payloads.md @@ -23,17 +23,45 @@ coreboot payload, but these days this function is available directly in the CorebootPayloadPkg part of its source tree. +## iPXE + +[iPXE](https://ipxe.org) is the leading open source network boot firmware. +It provides a full PXE Implementation enchaced with additional features such +as booting from HTTP, iSCSI, FCoE, AoE, wireless, WAN, infiniband. + ## GRUB2 -GRUB2 was originally written as a bootloader and that's its most popular -purpose, but it can also be compiled as a coreboot payload. +[GRUB2](https://www.gnu.org/software/grub) was originally written as a +bootloader and that's its most popular purpose, but it can also be compiled +as a coreboot payload. + +## U-Boot + +[U-Boot](https://www.denx.de/wiki/U-Boot) is a boot loader for Embedded boards +based on PowerPC, ARM, MIPS and several other processors, which can be +installed in a boot ROM and used to initialize and test the hardware or to +download and run application code. + +## FILO + +[FILO](https://www.coreboot.org/FILO) loads boot images from local filesystem, +without help from legacy BIOS services. Expected usage is to flash it into +the BIOS ROM together with coreboot. + +## BOOTBOOT + +[BOOTBOOT](https://gitlab.com/bztsrc/bootboot) is a multi-platform, +architecture agnostic boot protocol. The protocol describes how to boot an +ELF64 or PE32+ executable inside an initial ram disk image into clean 64 bit +mode. This version uses libpayload to do that. Initrd can be in ROM or on +disk a GPT partition or a file on a FAT formatted ESP partition. ## Linux -There are several projects using Linux as a payload (which was the -configuration that gave coreboot its original name, LinuxBIOS). That kernel is -often rather small and serves to load a current kernel from somewhere, e.g. -disk or network, and run that through the kexec mechanism. +There are several projects using [Linux](https://kernel.org) as a payload +(which was the configuration that gave coreboot its original name, LinuxBIOS). +That kernel is often rather small and serves to load a current kernel from +somewhere, e.g. disk or network, and run that through the kexec mechanism. Two aspects emphasized by proponents of Linux-as-a-payload are the availability of well-tested, battle-hardened drivers (as compared to @@ -51,4 +79,4 @@ For more details have a look at [heads-wiki]. [Heads]: https://github.com/osresearch/heads -[heads-wiki]: http://osresearch.net/ \ No newline at end of file +[heads-wiki]: http://osresearch.net/ -- To view, visit https://review.coreboot.org/c/coreboot/+/45829 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I13c10edbc7fbb7017641ab025982c658cbeb3610 Gerrit-Change-Number: 45829 Gerrit-PatchSet: 1 Gerrit-Owner: Zoltan Baldaszti <bztemail(a)gmail.com> Gerrit-MessageType: newchange

5 9

Change in coreboot[master]: [TEST] abuild: Default to !CHROMEOS
by Nico Huber (Code Review) Aug. 7, 2023

Aug. 7, 2023

Nico Huber has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/49056 ) Change subject: [TEST] abuild: Default to !CHROMEOS ...................................................................... [TEST] abuild: Default to !CHROMEOS Change-Id: I9ae4bc22f70be5b8d8efa35f0cc8aa2d36a5531a Signed-off-by: Nico Huber <nico.h(a)gmx.de> --- M util/abuild/abuild 1 file changed, 1 insertion(+), 1 deletion(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/56/49056/1 diff --git a/util/abuild/abuild b/util/abuild/abuild index 408de12..59da54c 100755 --- a/util/abuild/abuild +++ b/util/abuild/abuild @@ -655,7 +655,7 @@ clean_objs=false verboseopt='V=0' customizing="" -configoptions="" +configoptions="# CONFIG_CHROMEOS is not set\n" # testclass needs to be undefined if not used for variable expansion to work unset testclass while true ; do -- To view, visit https://review.coreboot.org/c/coreboot/+/49056 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I9ae4bc22f70be5b8d8efa35f0cc8aa2d36a5531a Gerrit-Change-Number: 49056 Gerrit-PatchSet: 1 Gerrit-Owner: Nico Huber <nico.h(a)gmx.de> Gerrit-MessageType: newchange

5 13

Change in coreboot[master]: soc/intel/common: Add romstage common stage file
by Bernardo Perez Priego (Code Review) Aug. 7, 2023

Aug. 7, 2023

Bernardo Perez Priego has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/37628 ) Change subject: soc/intel/common: Add romstage common stage file ...................................................................... soc/intel/common: Add romstage common stage file This patch will ensures all intel soc is using common stage files to make coreboot design flow align across all socs. CPU, SA, PCH, MCH programming sequence might be different between socs but the function call should route from same location across all soc. Signed-off-by: Bernardo Perez Priego <bernardo.perez.priego(a)intel.com> Change-Id: I06d43ac29f5e87ce731a470e5e145adea07ece4c --- M src/cpu/intel/car/romstage.c A src/soc/intel/common/basecode/include/intelbasecode/romstage.h A src/soc/intel/common/basecode/romstage/Makefile.inc A src/soc/intel/common/basecode/romstage/romstage.c 4 files changed, 162 insertions(+), 6 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/28/37628/1 diff --git a/src/cpu/intel/car/romstage.c b/src/cpu/intel/car/romstage.c index 1f8eb9a..55d3c9d 100644 --- a/src/cpu/intel/car/romstage.c +++ b/src/cpu/intel/car/romstage.c @@ -52,9 +52,6 @@ for (i = 0; i < num_guards; i++) stack_base[i] = stack_guard; - if (CONFIG(VBOOT_EARLY_EC_SYNC)) - vboot_sync_ec(); - mainboard_romstage_entry(); /* Check the stack. */ @@ -64,9 +61,6 @@ printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n"); } - if (CONFIG(SMM_TSEG)) - smm_list_regions(); - prepare_and_run_postcar(&early_mtrrs); /* We do not return here. */ } diff --git a/src/soc/intel/common/basecode/include/intelbasecode/romstage.h b/src/soc/intel/common/basecode/include/intelbasecode/romstage.h new file mode 100644 index 0000000..0cebbbf --- /dev/null +++ b/src/soc/intel/common/basecode/include/intelbasecode/romstage.h @@ -0,0 +1,37 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Intel Corporation. + * + * 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. + */ + +#ifndef SOC_INTEL_COMMON_BASECODE_ROMSTAGE_H +#define SOC_INTEL_COMMON_BASECODE_ROMSTAGE_H + +#include <stddef.h> +#include <stdint.h> +#include <fsp/soc_binding.h> + +struct romstage_ops { + void (*soc_early_init)(void); + void (*soc_init)(void); + void (*pch_early_init)(void); + void (*pch_init)(void); + void (*cpu_early_init)(void); + void (*cpu_init)(void); + bool (*is_s3wake)(void); + void (*soc_mem_init_params)(FSP_M_CONFIG *mupd); +}; + +/* SoC Override function */ +struct romstage_ops *soc_get_ops(void); + +#endif diff --git a/src/soc/intel/common/basecode/romstage/Makefile.inc b/src/soc/intel/common/basecode/romstage/Makefile.inc new file mode 100644 index 0000000..29763fb --- /dev/null +++ b/src/soc/intel/common/basecode/romstage/Makefile.inc @@ -0,0 +1 @@ +romstage-y += romstage.c diff --git a/src/soc/intel/common/basecode/romstage/romstage.c b/src/soc/intel/common/basecode/romstage/romstage.c new file mode 100644 index 0000000..55c4ab5 --- /dev/null +++ b/src/soc/intel/common/basecode/romstage/romstage.c @@ -0,0 +1,124 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2019 Intel Corporation. + * + * 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. + */ + +#include <arch/early_variables.h> +#include <romstage_common.h> +#include <cpu/x86/pae.h> +#include <intelbasecode/romstage.h> +#include <intelblocks/systemagent.h> +#include <soc/iomap.h> +#include <soc/romstage.h> + +static const struct romstage_ops s_romstage_ops; + +__weak struct romstage_ops *soc_get_ops(void) +{ + return (struct romstage_ops *)&s_romstage_ops; +} + +void romstage_early_init(void) +{ + struct romstage_ops *rs_ops = soc_get_ops(); + + rs_ops->soc_early_init(); + rs_ops->pch_early_init(); + rs_ops->cpu_early_init(); +} + +void romstage_init(void) +{ + struct romstage_ops *rs_ops = soc_get_ops(); + + rs_ops->soc_init(); + rs_ops->pch_init(); + rs_ops->cpu_init(); +} + +void romstage_cmn_soc_early_init(void) +{ + systemagent_early_init(); + heci_init(HECI1_BASE_ADDRESS); +} + +void romstage_cmn_soc_init(void) +{ +} + +void romstage_cmn_pch_early_init(void) +{ +} + +void romstage_cmn_cpu_early_init(void) +{ +} + +void romstage_cmn_pch_init(void) +{ +} + +void romstage_cmn_cpu_init(void) +{ +} + +bool romstage_cmn_is_s3wake(void) +{ + struct chipset_power_state *ps = pmc_get_power_state(); + return pmc_fill_power_state(ps) == ACPI_S3; +} + +void romstage_cmn_soc_mem_init_param(FSP_M_CONFIG *m_cfg) +{ +} + +static const struct romstage_ops s_romstage_ops = { + &romstage_cmn_soc_early_init, + &romstage_cmn_soc_init, + &romstage_cmn_pch_early_init, + &romstage_cmn_pch_init, + &romstage_cmn_cpu_early_init, + &romstage_cmn_cpu_init, + &romstage_cmn_is_s3wake, + &romstage_cmn_mb_mem_init_param, + &romstage_cmn_soc_mem_init_param +}; + +/* + Main romstage function +*/ +asmlinkage void mainboard_romstage_entry(void) +{ + if (CONFIG(VBOOT_EARLY_EC_SYNC)) + vboot_sync_ec(rs_ops->fill_power_state()); + + romstage_early_init(); + romstage_init(); + fsp_memory_init(rs_ops->is_s3wake()); + + if (CONFIG(SMM_TSEG)) + smm_list_regions(); +} + +/* + Callback function for FSP memory initialization +*/ +void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) +{ + struct romstage_ops *rs_ops = soc_get_ops(); + + FSP_M_CONFIG *m_cfg; + rs_ops->soc_mem_init_params(m_cfg); + mainboard_memory_init_params(m_cfg); +} + -- To view, visit https://review.coreboot.org/c/coreboot/+/37628 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I06d43ac29f5e87ce731a470e5e145adea07ece4c Gerrit-Change-Number: 37628 Gerrit-PatchSet: 1 Gerrit-Owner: Bernardo Perez Priego <bernardo.perez.priego(a)intel.com> Gerrit-MessageType: newchange

5 16

Change in coreboot[master]: soc/intel/common: Move reset request into intel_fw_update
by Sridhar Siricilla (Code Review) Aug. 7, 2023

Aug. 7, 2023

Sridhar Siricilla has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46819 ) Change subject: soc/intel/common: Move reset request into intel_fw_update ...................................................................... soc/intel/common: Move reset request into intel_fw_update The patch implements below functionalities: 1. Move reset request from CSE FW Update 2. Implement intel_fw_sync(), which triggers UCODE and CSE Lite FW update and trigger global reset if one of the FW update requests reset. This patch prevents triggering global reset having separate reset request in UCODE update or CSE Lite FW Update. Signed-off-by: Sridhar Siricilla <sridhar.siricilla(a)intel.com> Change-Id: I50da4206de05e552de68af7fa0afaef2dac33004 --- A src/soc/intel/common/basecode/fw_update/fw_update.c M src/soc/intel/common/block/cse/cse_lite.c M src/soc/intel/common/block/include/intelblocks/cse.h 3 files changed, 105 insertions(+), 52 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/19/46819/1 diff --git a/src/soc/intel/common/basecode/fw_update/fw_update.c b/src/soc/intel/common/basecode/fw_update/fw_update.c new file mode 100644 index 0000000..45d2d968 --- /dev/null +++ b/src/soc/intel/common/basecode/fw_update/fw_update.c @@ -0,0 +1,63 @@ +#include <bootstate.h> +#include <console/console.h> +#include <halt.h> +#include <intelbasecode/ucode_update.h> +#include <reset.h> +#include <security/vboot/misc.h> +#include <security/vboot/vboot_common.h> +#include <soc/intel/common/reset.h> +#include <vb2_api.h> +#include <intelblocks/cse.h> + +__weak void cse_board_reset(void) +{ + /* Default weak implementation, does nothing. */ +} + +void trigger_global_reset() { + + cse_board_reset(); + + /* If board does not perform the reset, then perform global_reset */ + do_global_reset(); + + die("cse_lite: Failed to reset the system\n"); +} + +static uint8_t update_ucode(void) +{ + if (CONFIG(INTEL_TOP_SWAP_MULTI_FIT_UCODE_UPDATE)) { + uint8_t reset_req = 0; + if (update_ucode_and_topswap_state(&reset_req)) { + /* Update failed */ + if (CONFIG(VBOOT)) { + printk(BIOS_DEBUG, "ucode: Failed to update microcode\n"); + struct vb2_context *ctx = vboot_get_context(); + if (ctx == NULL) + die("ucode: Failed to trigger recovery mode\n"); + vb2api_fail(ctx, 0x36, 0x0); + vboot_save_data(ctx); + vboot_reboot(); + } + } + return reset_req; + } +} + +static void intel_fw_update(void *unused) +{ + if (update_ucode() || cse_fw_sync()) + trigger_global_reset(); +} + + +#if CONFIG(SOC_INTEL_TIGERLAKE) || CONFIG(SOC_INTEL_JASPERLAKE) + +/* + * This needs to happen after the MRC cache write to avoid a 2nd + * memory training sequence. + */ +BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_ENTRY, intel_fw_update, NULL); +#else +BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY, intel_fw_update, NULL); +#endif diff --git a/src/soc/intel/common/block/cse/cse_lite.c b/src/soc/intel/common/block/cse/cse_lite.c index 77a8d5f..6006e13 100644 --- a/src/soc/intel/common/block/cse/cse_lite.c +++ b/src/soc/intel/common/block/cse/cse_lite.c @@ -414,43 +414,28 @@ return true; } -__weak void cse_board_reset(void) -{ - /* Default weak implementation, does nothing. */ -} - -/* Set the CSE's next boot partition and issues system reset */ -static bool cse_set_and_boot_from_next_bp(enum boot_partition_id bp) -{ - if (!cse_set_next_boot_partition(bp)) - return false; - - /* Allow the board to perform a reset for CSE RO<->RW jump */ - cse_board_reset(); - - /* If board does not perform the reset, then perform global_reset */ - do_global_reset(); - - die("cse_lite: Failed to reset the system\n"); - - /* Control never reaches here */ - return false; -} - -static bool cse_boot_to_rw(const struct cse_bp_info *cse_bp_info) +static bool cse_set_next_bp_to_rw(const struct cse_bp_info *cse_bp_info, uint8_t *reset_req) { if (cse_get_current_bp(cse_bp_info) == RW) return true; - return cse_set_and_boot_from_next_bp(RW); + if (!cse_set_next_boot_partition(RW)) + return false; + + *reset_req = 1; + return true; } -static bool cse_boot_to_ro(const struct cse_bp_info *cse_bp_info) +static bool cse_set_next_bp_to_ro(const struct cse_bp_info *cse_bp_info, uint8_t *reset_req) { if (cse_get_current_bp(cse_bp_info) == RO) return true; - return cse_set_and_boot_from_next_bp(RO); + if (!cse_set_next_boot_partition(RO)) + return false; + + *reset_req = 1; + return truel } static bool cse_get_rw_rdev(struct region_device *rdev) @@ -701,7 +686,7 @@ * It returns true if RW partition doesn't indicate BP_STATUS_DATA_FAILURE * otherwise false if any operation fails. */ -static bool cse_fix_data_failure_err(const struct cse_bp_info *cse_bp_info) +static bool cse_fix_data_failure_err(const struct cse_bp_info *cse_bp_info, uint8_t *reset_req) { /* * If RW partition status indicates BP_STATUS_DATA_FAILURE, @@ -715,7 +700,7 @@ if (!cse_data_clear_request(cse_bp_info)) return false; - return cse_boot_to_rw(cse_bp_info); + return cse_set_next_bp_to_rw(cse_bp_info, reset_req); } static bool cse_erase_rw_region(const struct region_device *target_rdev) @@ -798,16 +783,19 @@ } static bool cse_prep_for_rw_update(const struct cse_bp_info *cse_bp_info, - const struct cse_cbfs_rw_info *source_info) + const struct cse_cbfs_rw_info *source_info, uint8_t *reset_req) { /* * To set CSE's operation mode to HMRFPO mode: * 1. Ensure CSE to boot from RO(BP1) * 2. Send HMRFPO_ENABLE command to CSE */ - if (!cse_boot_to_ro(cse_bp_info)) + if (!cse_set_boot_to_ro(cse_bp_info, reset_req)) return false; + if (*reset_req) + return true; + if (cse_is_downgrade_instance(cse_bp_info, source_info) && !cse_data_clear_request(cse_bp_info)) { printk(BIOS_ERR, "cse_lite: CSE FW downgrade is aborted\n"); @@ -818,7 +806,8 @@ } static enum csme_failure_reason cse_trigger_fw_update(const struct cse_bp_info *cse_bp_info, - const struct cse_cbfs_rw_info *source_info, struct region_device *target_rdev) + const struct cse_cbfs_rw_info *source_info, struct region_device *target_rdev, + uint8_t *reset_req) { struct region_device source_rdev; @@ -836,7 +825,7 @@ } } - if (!cse_prep_for_rw_update(cse_bp_info, source_info)) { + if (!cse_prep_for_rw_update(cse_bp_info, source_info, reset_req)) { rv = CSE_LITE_SKU_COMMUNICATION_ERROR; goto error_exit; } @@ -850,7 +839,7 @@ } static uint8_t cse_fw_update(const struct cse_bp_info *cse_bp_info, - const struct region_device *source_info_rdev) + const struct region_device *source_info_rdev, uint8_t *reset_req) { struct region_device target_rdev; @@ -869,7 +858,7 @@ if (cse_is_update_required(cse_bp_info, &source_info, &target_rdev)) { printk(BIOS_DEBUG, "cse_lite: CSE RW update is initiated\n"); - return cse_trigger_fw_update(cse_bp_info, &source_info, &target_rdev); + return cse_trigger_fw_update(cse_bp_info, &source_info, &target_rdev, reset_req); } if (!cse_is_rw_bp_status_valid(cse_bp_info)) @@ -878,19 +867,19 @@ return 0; } -void cse_fw_sync(void *unused) +uint8_t cse_fw_sync(void) { static struct get_bp_info_rsp cse_bp_info; if (vboot_recovery_mode_enabled()) { printk(BIOS_DEBUG, "cse_lite: Skip switching to RW in the recovery path\n"); - return; + return 0; } /* If CSE SKU type is not Lite, skip enabling CSE Lite SKU */ if (!cse_is_hfs3_fw_sku_lite()) { printk(BIOS_ERR, "cse_lite: Not a CSE Lite SKU\n"); - return; + return 0; } if (!cse_get_bp_info(&cse_bp_info)) { @@ -898,9 +887,15 @@ cse_trigger_recovery(CSE_LITE_SKU_COMMUNICATION_ERROR); } - if (!cse_fix_data_failure_err(&cse_bp_info.bp_info)) + uint8_t reset_req = 0; + + if (!cse_fix_data_failure_err(&cse_bp_info.bp_info, &reset_req)) cse_trigger_recovery(CSE_LITE_SKU_DATA_WIPE_ERROR); + if(reset_req) + return reset_req; + + /* * If CSE CBFS RW blob metadata is present in CBFS, then trigger CSE firmware update. * The driver triggers recovery if CSE CBFS RW metadata is present in the CBFS and CSE @@ -909,23 +904,17 @@ uint8_t rv; struct region_device source_info_rdev; if (cse_get_cbfs_rdev(&source_info_rdev)) { - rv = cse_fw_update(&cse_bp_info.bp_info, &source_info_rdev); + rv = cse_fw_update(&cse_bp_info.bp_info, &source_info_rdev, &reset_req); if (rv) cse_trigger_recovery(rv); } - if (!cse_boot_to_rw(&cse_bp_info.bp_info)) { + if(reset_req) + return reset_req; + + if (!cse_set_next_bp_to_rw(&cse_bp_info.bp_info, &reset_req)) { printk(BIOS_ERR, "cse_lite: Failed to switch to RW\n"); cse_trigger_recovery(CSE_LITE_SKU_RW_SWITCH_ERROR); } + return reset_req; } - -#if CONFIG(SOC_INTEL_TIGERLAKE) || CONFIG(SOC_INTEL_JASPERLAKE) -/* - * This needs to happen after the MRC cache write to avoid a 2nd - * memory training sequence. - */ -BOOT_STATE_INIT_ENTRY(BS_DEV_RESOURCES, BS_ON_ENTRY, cse_fw_sync, NULL); -#else -BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_ENTRY, cse_fw_sync, NULL); -#endif diff --git a/src/soc/intel/common/block/include/intelblocks/cse.h b/src/soc/intel/common/block/include/intelblocks/cse.h index f554933..0ac5d74 100644 --- a/src/soc/intel/common/block/include/intelblocks/cse.h +++ b/src/soc/intel/common/block/include/intelblocks/cse.h @@ -216,8 +216,9 @@ * boot from RW and triggers recovery mode if CSE fails to jump to RW. * In software triggered recovery mode, the function allows CSE to boot from whatever is * currently selected partition. + * Returns 1 if reset is required otherwise 0. */ -void cse_fw_sync(void *unused); +uint8_t cse_fw_sync(void); /* Perform a board-specific reset sequence for CSE RO<->RW jump */ void cse_board_reset(void); -- To view, visit https://review.coreboot.org/c/coreboot/+/46819 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I50da4206de05e552de68af7fa0afaef2dac33004 Gerrit-Change-Number: 46819 Gerrit-PatchSet: 1 Gerrit-Owner: Sridhar Siricilla <sridhar.siricilla(a)intel.com> Gerrit-Reviewer: Patrick Rudolph <siro(a)das-labor.org> Gerrit-MessageType: newchange

6 14

Change in coreboot[master]: [TESTME]lenovo/x220: Attempt to fix broken DRAM init
by Patrick Rudolph (Code Review) Aug. 7, 2023

Aug. 7, 2023

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/39043 ) Change subject: [TESTME]lenovo/x220: Attempt to fix broken DRAM init ...................................................................... [TESTME]lenovo/x220: Attempt to fix broken DRAM init Enable power on WWAN as it has SMBUS connected. Might resolv an issue where DRAM init fails as no EEPROM is found on the bus. Untested. Change-Id: Ia7a2ca370124ecf743b000998b56855d5ed8f573 Signed-off-by: Patrick Rudolph <patrick.rudolph(a)9elements.com> --- M src/ec/lenovo/h8/Makefile.inc M src/mainboard/lenovo/x220/early_init.c 2 files changed, 15 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/43/39043/1 diff --git a/src/ec/lenovo/h8/Makefile.inc b/src/ec/lenovo/h8/Makefile.inc index 51c11be..9c8687a 100644 --- a/src/ec/lenovo/h8/Makefile.inc +++ b/src/ec/lenovo/h8/Makefile.inc @@ -18,6 +18,8 @@ ramstage-y += panic.c endif +romstage += wwan.c + ramstage-y += h8.c ramstage-y += bluetooth.c ramstage-y += wwan.c diff --git a/src/mainboard/lenovo/x220/early_init.c b/src/mainboard/lenovo/x220/early_init.c index 3429c1b..ae16f0c 100644 --- a/src/mainboard/lenovo/x220/early_init.c +++ b/src/mainboard/lenovo/x220/early_init.c @@ -24,6 +24,7 @@ #include <southbridge/intel/bd82x6x/pch.h> #include <southbridge/intel/common/gpio.h> #include <cpu/x86/msr.h> +#include <ec/lenovo/h8/h8.h> void mainboard_fill_pei_data(struct pei_data *pei_data) { @@ -74,6 +75,18 @@ *pei_data = pei_data_template; } +void mainboard_early_init(int s3_resume) +{ + /* + * The WWAN slot has SMBUS connected. Turn on power to make sure + * SMBUS is usable and DRAM init will succeed. + * ramstage will turn it off, in case it's not needed. + * TODO: Does GPIO42 (SMB_3B_EN) help here? + */ + if (h8_has_wwan()) + h8_wwan_enable(true); +} + void mainboard_get_spd(spd_raw_data *spd, bool id_only) { read_spd (&spd[0], 0x50, id_only); -- To view, visit https://review.coreboot.org/c/coreboot/+/39043 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: Ia7a2ca370124ecf743b000998b56855d5ed8f573 Gerrit-Change-Number: 39043 Gerrit-PatchSet: 1 Gerrit-Owner: Patrick Rudolph <patrick.rudolph(a)9elements.com> Gerrit-MessageType: newchange

6 13

Change in coreboot[master]: amdfwtool: Use *number in config file as NVRAM entry
by Bao Zheng (Code Review) Aug. 7, 2023

Aug. 7, 2023

Hello Zheng Bao, I'd like you to do a code review. Please visit https://review.coreboot.org/c/coreboot/+/49015 to review the following change. Change subject: amdfwtool: Use *number in config file as NVRAM entry ...................................................................... amdfwtool: Use *number in config file as NVRAM entry Add the entry like XXXX_FW_TYPE_STRING *0xXXXXX to config file. Then the required size of space will be allocated related to the firmware type. Change-Id: I98c94b4087f8a174f7d5753a30695a10f1b796ae Signed-off-by: Zheng Bao <fishbaozi(a)gmail.com> --- M src/soc/amd/picasso/Makefile.inc M src/soc/amd/stoneyridge/Makefile.inc M src/southbridge/amd/pi/hudson/Makefile.inc M util/amdfwtool/amdfwtool.c M util/amdfwtool/amdfwtool.h M util/amdfwtool/data_parse.c 6 files changed, 35 insertions(+), 13 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/15/49015/1 diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc index a0f3ec4..08d2817 100644 --- a/src/soc/amd/picasso/Makefile.inc +++ b/src/soc/amd/picasso/Makefile.inc @@ -213,7 +213,7 @@ # Add all the files listed in the config file POUND_SIGN=$(call strip_quotes, "\#") -DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) +DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /*/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) AMDFW_COMMON_ARGS=$(OPT_PSP_APCB_FILES) \ $(OPT_PSP_APCB_FILES_BK) \ diff --git a/src/soc/amd/stoneyridge/Makefile.inc b/src/soc/amd/stoneyridge/Makefile.inc index 969f512..f7ef699 100644 --- a/src/soc/amd/stoneyridge/Makefile.inc +++ b/src/soc/amd/stoneyridge/Makefile.inc @@ -141,7 +141,7 @@ # Add all the files listed in the config file POUND_SIGN=$(call strip_quotes, "\#") -DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) +DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /*/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) $(obj)/amdfw.rom: $(call strip_quotes, $(CONFIG_STONEYRIDGE_XHCI_FWM_FILE)) \ $(call strip_quotes, $(CONFIG_STONEYRIDGE_GEC_FWM_FILE)) \ diff --git a/src/southbridge/amd/pi/hudson/Makefile.inc b/src/southbridge/amd/pi/hudson/Makefile.inc index 215a5a1..3d96823 100644 --- a/src/southbridge/amd/pi/hudson/Makefile.inc +++ b/src/southbridge/amd/pi/hudson/Makefile.inc @@ -110,7 +110,7 @@ # Add all the files listed in the config file POUND_SIGN=$(call strip_quotes, "\#") -DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) +DEP_FILES= $(patsubst %,$(FIRMWARE_LOCATION)/%, $(shell sed -e /^$(POUND_SIGN)/d -e /*/d -e /^FIRMWARE_LOCATION/d $(CONFIG_AMDFW_CONFIG_FILE) | awk '{print $$2}' )) $(obj)/amdfw.rom: $(call strip_quotes, $(CONFIG_HUDSON_XHCI_FWM_FILE)) \ $(call strip_quotes, $(CONFIG_HUDSON_IMC_FWM_FILE)) \ diff --git a/util/amdfwtool/amdfwtool.c b/util/amdfwtool/amdfwtool.c index f167e5e..b6c9c8d 100644 --- a/util/amdfwtool/amdfwtool.c +++ b/util/amdfwtool/amdfwtool.c @@ -775,6 +775,13 @@ ctx->current = ALIGN(ctx->current + bytes, BLOB_ALIGNMENT); count++; + } else if (fw_table[i].blank_size != 0) { + pspdir->entries[count].type = fw_table[i].type; + pspdir->entries[count].subprog = fw_table[i].subprog; + pspdir->entries[count].rsvd = 0; + pspdir->entries[count].size = (uint32_t)fw_table[i].blank_size; + pspdir->entries[count].addr = RUN_CURRENT(*ctx); + count++; } else { /* This APU doesn't have this firmware. */ } @@ -1018,11 +1025,15 @@ fw_table[i].type == AMD_BIOS_APCB_BK) ctx->current = ALIGN( ctx->current, ERASE_ALIGNMENT); - bytes = copy_blob(BUFF_CURRENT(*ctx), - fw_table[i].filename, BUFF_ROOM(*ctx)); - if (bytes <= 0) { - free(ctx->rom); - exit(1); + if (fw_table[i].filename != NULL) { + bytes = copy_blob(BUFF_CURRENT(*ctx), + fw_table[i].filename, BUFF_ROOM(*ctx)); + if (bytes <= 0) { + free(ctx->rom); + exit(1); + } + } else if (fw_table[i].blank_size != 0){ + bytes = fw_table[i].blank_size; } biosdir->entries[count].size = (uint32_t)bytes; diff --git a/util/amdfwtool/amdfwtool.h b/util/amdfwtool/amdfwtool.h index 6ae4675..beaa360 100644 --- a/util/amdfwtool/amdfwtool.h +++ b/util/amdfwtool/amdfwtool.h @@ -109,6 +109,7 @@ uint8_t subprog; int level; uint64_t other; + uint32_t blank_size; } amd_fw_entry; typedef struct _amd_cb_config { diff --git a/util/amdfwtool/data_parse.c b/util/amdfwtool/data_parse.c index 017c689..de31242 100644 --- a/util/amdfwtool/data_parse.c +++ b/util/amdfwtool/data_parse.c @@ -254,7 +254,10 @@ while (psp_tableptr->type != AMD_FW_INVALID) { /* instance are not used in PSP table */ if (psp_tableptr->type == fw_type && psp_tableptr->subprog == subprog) { - psp_tableptr->filename = filename; + if (filename[0] == '*') + psp_tableptr->blank_size = strtoull(&filename[1], NULL, 16); + else + psp_tableptr->filename = filename; break; } psp_tableptr++; @@ -330,7 +333,10 @@ if (bhd_tableptr->type == fw_type && bhd_tableptr->subpr == subprog && bhd_tableptr->inst == instance) { - bhd_tableptr->filename = filename; + if (filename[0] == '*') + bhd_tableptr->blank_size = strtoull(&filename[1], NULL, 16); + else + bhd_tableptr->filename = filename; break; } bhd_tableptr++; @@ -440,9 +446,13 @@ continue; } else { path_filename = malloc(MAX_LINE_SIZE); - strcpy(path_filename, dir); - strcat(path_filename, "/"); - strcat(path_filename, &(oneline[match[2].rm_so])); + if (oneline[match[2].rm_so] == '*') { + strcpy(path_filename, &(oneline[match[2].rm_so])); + } else { + strcpy(path_filename, dir); + strcat(path_filename, "/"); + strcat(path_filename, &(oneline[match[2].rm_so])); + } if (find_register_fw_filename_psp_dir( &(oneline[match[1].rm_so]), -- To view, visit https://review.coreboot.org/c/coreboot/+/49015 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I98c94b4087f8a174f7d5753a30695a10f1b796ae Gerrit-Change-Number: 49015 Gerrit-PatchSet: 1 Gerrit-Owner: Bao Zheng <fishbaozi(a)gmail.com> Gerrit-Reviewer: Felix Held <felix-coreboot(a)felixheld.de> Gerrit-Reviewer: Jason Glenesk <jason.glenesk(a)gmail.com> Gerrit-Reviewer: Marshall Dawson <marshalldawson3rd(a)gmail.com> Gerrit-Reviewer: Martin Roth <martinroth(a)google.com> Gerrit-Reviewer: Patrick Georgi <pgeorgi(a)google.com> Gerrit-Reviewer: Zheng Bao Gerrit-MessageType: newchange

5 53

Change in coreboot[master]: sb/intel/lynxpoint: Setup gpio in bootblock
by Arthur Heymans (Code Review) Aug. 7, 2023

Aug. 7, 2023

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36712 ) Change subject: sb/intel/lynxpoint: Setup gpio in bootblock ...................................................................... sb/intel/lynxpoint: Setup gpio in bootblock GPIO setup is needed for verstage. verstage can also still happen after romstage so keep the GPIO init there too. Change-Id: I448ca12f5ddab362983429c508e518b7042ef760 Signed-off-by: Arthur Heymans <arthur(a)aheymans.xyz> --- M src/mainboard/asrock/h81m-hds/Makefile.inc M src/mainboard/google/beltino/Makefile.inc M src/mainboard/google/slippy/Makefile.inc M src/mainboard/intel/baskingridge/Makefile.inc M src/mainboard/supermicro/x10slm-f/Makefile.inc M src/southbridge/intel/common/Makefile.inc M src/southbridge/intel/lynxpoint/Makefile.inc M src/southbridge/intel/lynxpoint/bootblock.c M src/southbridge/intel/lynxpoint/early_pch.c M src/southbridge/intel/lynxpoint/pch.h 10 files changed, 22 insertions(+), 10 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/36712/1 diff --git a/src/mainboard/asrock/h81m-hds/Makefile.inc b/src/mainboard/asrock/h81m-hds/Makefile.inc index de18bc5..3fc7ac7 100644 --- a/src/mainboard/asrock/h81m-hds/Makefile.inc +++ b/src/mainboard/asrock/h81m-hds/Makefile.inc @@ -16,4 +16,5 @@ romstage-y += gpio.c ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads +bootblock-y += gpio.c bootblock-y += bootblock.c diff --git a/src/mainboard/google/beltino/Makefile.inc b/src/mainboard/google/beltino/Makefile.inc index 7535350..0ecb31d 100644 --- a/src/mainboard/google/beltino/Makefile.inc +++ b/src/mainboard/google/beltino/Makefile.inc @@ -23,5 +23,7 @@ romstage-y += variants/$(VARIANT_DIR)/led.c romstage-y += variants/$(VARIANT_DIR)/gpio.c +bootblock-y += variants/$(VARIANT_DIR)/gpio.c + subdirs-y += variants/$(VARIANT_DIR) CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/include diff --git a/src/mainboard/google/slippy/Makefile.inc b/src/mainboard/google/slippy/Makefile.inc index f80dcab..e35f93e 100644 --- a/src/mainboard/google/slippy/Makefile.inc +++ b/src/mainboard/google/slippy/Makefile.inc @@ -23,6 +23,8 @@ romstage-y += variants/$(VARIANT_DIR)/romstage.c romstage-y += variants/$(VARIANT_DIR)/gpio.c +bootblock-y += variants/$(VARIANT_DIR)/gpio.c + subdirs-y += variants/$(VARIANT_DIR) ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads diff --git a/src/mainboard/intel/baskingridge/Makefile.inc b/src/mainboard/intel/baskingridge/Makefile.inc index 91a7963..8f12999 100644 --- a/src/mainboard/intel/baskingridge/Makefile.inc +++ b/src/mainboard/intel/baskingridge/Makefile.inc @@ -17,6 +17,7 @@ ramstage-y += chromeos.c verstage-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += chromeos.c +bootblock-y += gpio.c romstage-y += gpio.c smm-y += mainboard_smi.c diff --git a/src/mainboard/supermicro/x10slm-f/Makefile.inc b/src/mainboard/supermicro/x10slm-f/Makefile.inc index 301070b..0b4f367 100644 --- a/src/mainboard/supermicro/x10slm-f/Makefile.inc +++ b/src/mainboard/supermicro/x10slm-f/Makefile.inc @@ -15,4 +15,5 @@ ## romstage-y += gpio.c +bootblock-y += gpio.c bootblock-y += bootblock.c diff --git a/src/southbridge/intel/common/Makefile.inc b/src/southbridge/intel/common/Makefile.inc index 5ca7daf..433a310 100644 --- a/src/southbridge/intel/common/Makefile.inc +++ b/src/southbridge/intel/common/Makefile.inc @@ -34,6 +34,7 @@ romstage-$(CONFIG_USBDEBUG) += usb_debug.c ramstage-$(CONFIG_USBDEBUG) += usb_debug.c +bootblock-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_GPIO) += gpio.c romstage-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_GPIO) += gpio.c ramstage-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_GPIO) += gpio.c smm-$(CONFIG_SOUTHBRIDGE_INTEL_COMMON_GPIO) += gpio.c diff --git a/src/southbridge/intel/lynxpoint/Makefile.inc b/src/southbridge/intel/lynxpoint/Makefile.inc index e53ed8d..bacaf74 100644 --- a/src/southbridge/intel/lynxpoint/Makefile.inc +++ b/src/southbridge/intel/lynxpoint/Makefile.inc @@ -50,6 +50,7 @@ romstage-y += rcba.c pmutil.c ifeq ($(CONFIG_INTEL_LYNXPOINT_LP),y) +bootblock-y += lp_gpio.c romstage-y += lp_gpio.c ramstage-y += lp_gpio.c smm-y += lp_gpio.c diff --git a/src/southbridge/intel/lynxpoint/bootblock.c b/src/southbridge/intel/lynxpoint/bootblock.c index 39e6925..abcb35b 100644 --- a/src/southbridge/intel/lynxpoint/bootblock.c +++ b/src/southbridge/intel/lynxpoint/bootblock.c @@ -16,6 +16,7 @@ #include <device/pci_ops.h> #include <cpu/intel/car/bootblock.h> #include "pch.h" +#include "lp_gpio.h" /* * Enable Prefetching and Caching. @@ -33,14 +34,6 @@ pci_write_config8(dev, 0xdc, reg8); } - -static void map_rcba(void) -{ - pci_devfn_t dev = PCI_DEV(0, 0x1f, 0); - - pci_write_config32(dev, RCBA, (uintptr_t)DEFAULT_RCBA | 1); -} - static void enable_port80_on_lpc(void) { /* Enable port 80 POST on LPC. The chipset does this by default, @@ -72,7 +65,7 @@ void bootblock_early_southbridge_init(void) { - map_rcba(); + pch_enable_bars(); enable_spi_prefetch(); enable_port80_on_lpc(); set_spi_speed(); @@ -83,3 +76,12 @@ pch_enable_lpc(); mainboard_config_superio(); } + +void bootblock_southbridge_init(void) +{ +#if CONFIG(INTEL_LYNXPOINT_LP) + setup_pch_lp_gpios(mainboard_gpio_map); +#else + setup_pch_gpios(mainboard_gpio_map); +#endif +} diff --git a/src/southbridge/intel/lynxpoint/early_pch.c b/src/southbridge/intel/lynxpoint/early_pch.c index b49d3cf..9cf021e 100644 --- a/src/southbridge/intel/lynxpoint/early_pch.c +++ b/src/southbridge/intel/lynxpoint/early_pch.c @@ -45,7 +45,7 @@ return id == PCH_TYPE_LPT_LP; } -static void pch_enable_bars(void) +void pch_enable_bars(void) { /* Setting up Southbridge. In the northbridge code. */ pci_write_config32(PCH_LPC_DEV, RCBA, (uintptr_t)DEFAULT_RCBA | 1); diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h index 8802be1..561c5b7 100644 --- a/src/southbridge/intel/lynxpoint/pch.h +++ b/src/southbridge/intel/lynxpoint/pch.h @@ -184,6 +184,7 @@ int early_pch_init(const struct rcba_config_instruction *rcba_config); void pch_enable_lpc(void); void mainboard_config_superio(void); +void pch_enable_bars(void); #define MAINBOARD_POWER_OFF 0 #define MAINBOARD_POWER_ON 1 -- To view, visit https://review.coreboot.org/c/coreboot/+/36712 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I448ca12f5ddab362983429c508e518b7042ef760 Gerrit-Change-Number: 36712 Gerrit-PatchSet: 1 Gerrit-Owner: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-Reviewer: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-Reviewer: Martin Roth <martinroth(a)google.com> Gerrit-Reviewer: Patrick Georgi <pgeorgi(a)google.com> Gerrit-Reviewer: Patrick Rudolph <siro(a)das-labor.org> Gerrit-Reviewer: Tristan Corrick <tristan(a)corrick.kiwi> Gerrit-MessageType: newchange

4 7

Change in coreboot[master]: mb/*/*{haswell}: Link gpio.c and add a const global for lp variant
by Arthur Heymans (Code Review) Aug. 7, 2023

Aug. 7, 2023

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36710 ) Change subject: mb/*/*{haswell}: Link gpio.c and add a const global for lp variant ...................................................................... mb/*/*{haswell}: Link gpio.c and add a const global for lp variant This is similar to how sb/common/intel handles it. The advantage is that the gpio configuration does not need to be passed on that much. Change-Id: I6d07f0d4d3aaf4e8662d6f7dc8238d14a16fd04d Signed-off-by: Arthur Heymans <arthur(a)aheymans.xyz> --- M src/cpu/intel/haswell/haswell.h M src/cpu/intel/haswell/romstage.c M src/mainboard/asrock/h81m-hds/romstage.c M src/mainboard/google/beltino/Makefile.inc M src/mainboard/google/beltino/romstage.c R src/mainboard/google/beltino/variants/mccloud/gpio.c R src/mainboard/google/beltino/variants/monroe/gpio.c R src/mainboard/google/beltino/variants/panther/gpio.c R src/mainboard/google/beltino/variants/tricky/gpio.c R src/mainboard/google/beltino/variants/zako/gpio.c M src/mainboard/google/slippy/Makefile.inc R src/mainboard/google/slippy/variants/falco/gpio.c M src/mainboard/google/slippy/variants/falco/romstage.c R src/mainboard/google/slippy/variants/leon/gpio.c M src/mainboard/google/slippy/variants/leon/romstage.c R src/mainboard/google/slippy/variants/peppy/gpio.c M src/mainboard/google/slippy/variants/peppy/romstage.c R src/mainboard/google/slippy/variants/wolf/gpio.c M src/mainboard/google/slippy/variants/wolf/romstage.c M src/mainboard/intel/baskingridge/Makefile.inc R src/mainboard/intel/baskingridge/gpio.c M src/mainboard/intel/baskingridge/romstage.c M src/mainboard/supermicro/x10slm-f/romstage.c M src/southbridge/intel/lynxpoint/early_pch.c M src/southbridge/intel/lynxpoint/lp_gpio.h M src/southbridge/intel/lynxpoint/pch.h 26 files changed, 25 insertions(+), 73 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/10/36710/1 diff --git a/src/cpu/intel/haswell/haswell.h b/src/cpu/intel/haswell/haswell.h index 4c67ba8..7459011 100644 --- a/src/cpu/intel/haswell/haswell.h +++ b/src/cpu/intel/haswell/haswell.h @@ -134,7 +134,6 @@ struct rcba_config_instruction; struct romstage_params { struct pei_data *pei_data; - const void *gpio_map; const struct rcba_config_instruction *rcba_config; void (*copy_spd)(struct pei_data *); }; diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index 34fd7b0..e28ebf4 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -33,7 +33,7 @@ enable_lapic(); - wake_from_s3 = early_pch_init(params->gpio_map, params->rcba_config); + wake_from_s3 = early_pch_init(params->rcba_config); /* Perform some early chipset initialization required * before RAM initialization can work diff --git a/src/mainboard/asrock/h81m-hds/romstage.c b/src/mainboard/asrock/h81m-hds/romstage.c index 3deae75..dd4043e 100644 --- a/src/mainboard/asrock/h81m-hds/romstage.c +++ b/src/mainboard/asrock/h81m-hds/romstage.c @@ -92,7 +92,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], }; diff --git a/src/mainboard/google/beltino/Makefile.inc b/src/mainboard/google/beltino/Makefile.inc index e1bebc1..7535350 100644 --- a/src/mainboard/google/beltino/Makefile.inc +++ b/src/mainboard/google/beltino/Makefile.inc @@ -21,6 +21,7 @@ smm-y += smihandler.c variants/$(VARIANT_DIR)/led.c romstage-y += variants/$(VARIANT_DIR)/led.c +romstage-y += variants/$(VARIANT_DIR)/gpio.c subdirs-y += variants/$(VARIANT_DIR) CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/include diff --git a/src/mainboard/google/beltino/romstage.c b/src/mainboard/google/beltino/romstage.c index f206664..5c91bec 100644 --- a/src/mainboard/google/beltino/romstage.c +++ b/src/mainboard/google/beltino/romstage.c @@ -24,7 +24,6 @@ #include <southbridge/intel/lynxpoint/pch.h> #include <superio/ite/common/ite.h> #include <superio/ite/it8772f/it8772f.h> -#include <variant/gpio.h> #include "onboard.h" const struct rcba_config_instruction rcba_config[] = { @@ -128,7 +127,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], }; diff --git a/src/mainboard/google/beltino/variants/mccloud/include/variant/gpio.h b/src/mainboard/google/beltino/variants/mccloud/gpio.c similarity index 98% rename from src/mainboard/google/beltino/variants/mccloud/include/variant/gpio.h rename to src/mainboard/google/beltino/variants/mccloud/gpio.c index 116eeeb..47979d2b 100644 --- a/src/mainboard/google/beltino/variants/mccloud/include/variant/gpio.h +++ b/src/mainboard/google/beltino/variants/mccloud/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef MCCLOUD_GPIO_H -#define MCCLOUD_GPIO_H - +#include <stdint.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/beltino/variants/monroe/include/variant/gpio.h b/src/mainboard/google/beltino/variants/monroe/gpio.c similarity index 98% rename from src/mainboard/google/beltino/variants/monroe/include/variant/gpio.h rename to src/mainboard/google/beltino/variants/monroe/gpio.c index 8423e1e..22ef848 100644 --- a/src/mainboard/google/beltino/variants/monroe/include/variant/gpio.h +++ b/src/mainboard/google/beltino/variants/monroe/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef MONROE_GPIO_H -#define MONROE_GPIO_H - +#include <stdint.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/beltino/variants/panther/include/variant/gpio.h b/src/mainboard/google/beltino/variants/panther/gpio.c similarity index 98% rename from src/mainboard/google/beltino/variants/panther/include/variant/gpio.h rename to src/mainboard/google/beltino/variants/panther/gpio.c index e48f0b4..08142a8 100644 --- a/src/mainboard/google/beltino/variants/panther/include/variant/gpio.h +++ b/src/mainboard/google/beltino/variants/panther/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef PANTHER_GPIO_H -#define PANTHER_GPIO_H - +#include <stdint.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/beltino/variants/tricky/include/variant/gpio.h b/src/mainboard/google/beltino/variants/tricky/gpio.c similarity index 98% rename from src/mainboard/google/beltino/variants/tricky/include/variant/gpio.h rename to src/mainboard/google/beltino/variants/tricky/gpio.c index 6980ebb..df5d333 100644 --- a/src/mainboard/google/beltino/variants/tricky/include/variant/gpio.h +++ b/src/mainboard/google/beltino/variants/tricky/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef TRICKY_GPIO_H -#define TRICKY_GPIO_H - +#include <stdint.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/beltino/variants/zako/include/variant/gpio.h b/src/mainboard/google/beltino/variants/zako/gpio.c similarity index 98% rename from src/mainboard/google/beltino/variants/zako/include/variant/gpio.h rename to src/mainboard/google/beltino/variants/zako/gpio.c index dffefd6..e533bf0 100644 --- a/src/mainboard/google/beltino/variants/zako/include/variant/gpio.h +++ b/src/mainboard/google/beltino/variants/zako/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef ZAKO_GPIO_H -#define ZAKO_GPIO_H - +#include <stdint.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/slippy/Makefile.inc b/src/mainboard/google/slippy/Makefile.inc index 921f9e7..f80dcab 100644 --- a/src/mainboard/google/slippy/Makefile.inc +++ b/src/mainboard/google/slippy/Makefile.inc @@ -21,6 +21,7 @@ smm-y += smihandler.c romstage-y += variants/$(VARIANT_DIR)/romstage.c +romstage-y += variants/$(VARIANT_DIR)/gpio.c subdirs-y += variants/$(VARIANT_DIR) diff --git a/src/mainboard/google/slippy/variants/falco/include/variant/gpio.h b/src/mainboard/google/slippy/variants/falco/gpio.c similarity index 97% rename from src/mainboard/google/slippy/variants/falco/include/variant/gpio.h rename to src/mainboard/google/slippy/variants/falco/gpio.c index c35b81e..3fdc032 100644 --- a/src/mainboard/google/slippy/variants/falco/include/variant/gpio.h +++ b/src/mainboard/google/slippy/variants/falco/gpio.c @@ -13,10 +13,8 @@ * GNU General Public License for more details. */ -#ifndef FALCO_GPIO_H -#define FALCO_GPIO_H - -struct pch_lp_gpio_map; +#include <stdint.h> +#include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { LP_GPIO_UNUSED, /* 0: UNUSED */ @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/slippy/variants/falco/romstage.c b/src/mainboard/google/slippy/variants/falco/romstage.c index 1903588..656bf70 100644 --- a/src/mainboard/google/slippy/variants/falco/romstage.c +++ b/src/mainboard/google/slippy/variants/falco/romstage.c @@ -24,7 +24,6 @@ #include <northbridge/intel/haswell/raminit.h> #include <southbridge/intel/lynxpoint/pch.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> -#include <variant/gpio.h> #include "../../variant.h" const struct rcba_config_instruction rcba_config[] = { @@ -165,7 +164,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], .copy_spd = copy_spd, }; diff --git a/src/mainboard/google/slippy/variants/leon/include/variant/gpio.h b/src/mainboard/google/slippy/variants/leon/gpio.c similarity index 97% rename from src/mainboard/google/slippy/variants/leon/include/variant/gpio.h rename to src/mainboard/google/slippy/variants/leon/gpio.c index 7527ff2..5ea78f9 100644 --- a/src/mainboard/google/slippy/variants/leon/include/variant/gpio.h +++ b/src/mainboard/google/slippy/variants/leon/gpio.c @@ -13,10 +13,8 @@ * GNU General Public License for more details. */ -#ifndef LEON_GPIO_H -#define LEON_GPIO_H - -struct pch_lp_gpio_map; +#include <stdint.h> +#include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { LP_GPIO_UNUSED, /* 0: UNUSED */ @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/slippy/variants/leon/romstage.c b/src/mainboard/google/slippy/variants/leon/romstage.c index 3ef8eec..2eeb86d 100644 --- a/src/mainboard/google/slippy/variants/leon/romstage.c +++ b/src/mainboard/google/slippy/variants/leon/romstage.c @@ -24,7 +24,6 @@ #include <northbridge/intel/haswell/raminit.h> #include <southbridge/intel/lynxpoint/pch.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> -#include <variant/gpio.h> #include "../../variant.h" const struct rcba_config_instruction rcba_config[] = { @@ -160,7 +159,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], .copy_spd = copy_spd, }; diff --git a/src/mainboard/google/slippy/variants/peppy/include/variant/gpio.h b/src/mainboard/google/slippy/variants/peppy/gpio.c similarity index 97% rename from src/mainboard/google/slippy/variants/peppy/include/variant/gpio.h rename to src/mainboard/google/slippy/variants/peppy/gpio.c index 8eb3da9..00e6a54 100644 --- a/src/mainboard/google/slippy/variants/peppy/include/variant/gpio.h +++ b/src/mainboard/google/slippy/variants/peppy/gpio.c @@ -13,10 +13,8 @@ * GNU General Public License for more details. */ -#ifndef PEPPY_GPIO_H -#define PEPPY_GPIO_H - -struct pch_lp_gpio_map; +#include <stdint.h> +#include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { LP_GPIO_UNUSED, /* 0: UNUSED */ @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/slippy/variants/peppy/romstage.c b/src/mainboard/google/slippy/variants/peppy/romstage.c index 71eafc2..048a154 100644 --- a/src/mainboard/google/slippy/variants/peppy/romstage.c +++ b/src/mainboard/google/slippy/variants/peppy/romstage.c @@ -25,7 +25,6 @@ #include <northbridge/intel/haswell/raminit.h> #include <southbridge/intel/lynxpoint/pch.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> -#include <variant/gpio.h> #include "../../onboard.h" #include "../../variant.h" @@ -177,7 +176,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], .copy_spd = copy_spd, }; diff --git a/src/mainboard/google/slippy/variants/wolf/include/variant/gpio.h b/src/mainboard/google/slippy/variants/wolf/gpio.c similarity index 97% rename from src/mainboard/google/slippy/variants/wolf/include/variant/gpio.h rename to src/mainboard/google/slippy/variants/wolf/gpio.c index 5c72f73..1dbd5ff 100644 --- a/src/mainboard/google/slippy/variants/wolf/include/variant/gpio.h +++ b/src/mainboard/google/slippy/variants/wolf/gpio.c @@ -13,10 +13,8 @@ * GNU General Public License for more details. */ -#ifndef WOLF_GPIO_H -#define WOLF_GPIO_H - -struct pch_lp_gpio_map; +#include <stdint.h> +#include <southbridge/intel/lynxpoint/lp_gpio.h> const struct pch_lp_gpio_map mainboard_gpio_map[] = { LP_GPIO_UNUSED, /* 0: UNUSED */ @@ -116,5 +114,3 @@ LP_GPIO_UNUSED, /* 94: UNUSED */ LP_GPIO_END }; - -#endif diff --git a/src/mainboard/google/slippy/variants/wolf/romstage.c b/src/mainboard/google/slippy/variants/wolf/romstage.c index 7fcf085..cc67c93 100644 --- a/src/mainboard/google/slippy/variants/wolf/romstage.c +++ b/src/mainboard/google/slippy/variants/wolf/romstage.c @@ -25,7 +25,6 @@ #include <northbridge/intel/haswell/raminit.h> #include <southbridge/intel/lynxpoint/pch.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> -#include <variant/gpio.h> #include "../../variant.h" const struct rcba_config_instruction rcba_config[] = { @@ -164,7 +163,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], .copy_spd = copy_spd, }; diff --git a/src/mainboard/intel/baskingridge/Makefile.inc b/src/mainboard/intel/baskingridge/Makefile.inc index e34704d..91a7963 100644 --- a/src/mainboard/intel/baskingridge/Makefile.inc +++ b/src/mainboard/intel/baskingridge/Makefile.inc @@ -17,4 +17,6 @@ ramstage-y += chromeos.c verstage-$(CONFIG_VBOOT_SEPARATE_VERSTAGE) += chromeos.c +romstage-y += gpio.c + smm-y += mainboard_smi.c diff --git a/src/mainboard/intel/baskingridge/gpio.h b/src/mainboard/intel/baskingridge/gpio.c similarity index 98% rename from src/mainboard/intel/baskingridge/gpio.h rename to src/mainboard/intel/baskingridge/gpio.c index f2be9e3..3a33f09 100644 --- a/src/mainboard/intel/baskingridge/gpio.h +++ b/src/mainboard/intel/baskingridge/gpio.c @@ -13,9 +13,7 @@ * GNU General Public License for more details. */ -#ifndef BASKING_RIDGE_GPIO_H -#define BASKING_RIDGE_GPIO_H - +#include <stdint.h> #include <southbridge/intel/common/gpio.h> const struct pch_gpio_set1 pch_gpio_set1_mode = { diff --git a/src/mainboard/intel/baskingridge/romstage.c b/src/mainboard/intel/baskingridge/romstage.c index 1a10931..3d03ab3 100644 --- a/src/mainboard/intel/baskingridge/romstage.c +++ b/src/mainboard/intel/baskingridge/romstage.c @@ -134,7 +134,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = &rcba_config[0], .copy_spd = NULL, }; diff --git a/src/mainboard/supermicro/x10slm-f/romstage.c b/src/mainboard/supermicro/x10slm-f/romstage.c index 552ebd2..46ec7b2 100644 --- a/src/mainboard/supermicro/x10slm-f/romstage.c +++ b/src/mainboard/supermicro/x10slm-f/romstage.c @@ -90,7 +90,6 @@ struct romstage_params romstage_params = { .pei_data = &pei_data, - .gpio_map = &mainboard_gpio_map, .rcba_config = rcba_config, }; diff --git a/src/southbridge/intel/lynxpoint/early_pch.c b/src/southbridge/intel/lynxpoint/early_pch.c index 25ffdc4..b49d3cf 100644 --- a/src/southbridge/intel/lynxpoint/early_pch.c +++ b/src/southbridge/intel/lynxpoint/early_pch.c @@ -99,17 +99,16 @@ { } -int early_pch_init(const void *gpio_map, - const struct rcba_config_instruction *rcba_config) +int early_pch_init(const struct rcba_config_instruction *rcba_config) { int wake_from_s3; pch_enable_bars(); #if CONFIG(INTEL_LYNXPOINT_LP) - setup_pch_lp_gpios(gpio_map); + setup_pch_lp_gpios(mainboard_gpio_map); #else - setup_pch_gpios(gpio_map); + setup_pch_gpios(mainboard_gpio_map); #endif pch_generic_setup(); diff --git a/src/southbridge/intel/lynxpoint/lp_gpio.h b/src/southbridge/intel/lynxpoint/lp_gpio.h index 8436243..0464226 100644 --- a/src/southbridge/intel/lynxpoint/lp_gpio.h +++ b/src/southbridge/intel/lynxpoint/lp_gpio.h @@ -160,6 +160,8 @@ u8 pirq; } __packed; +extern const struct pch_lp_gpio_map mainboard_gpio_map[]; + /* Configure GPIOs with mainboard provided settings */ void setup_pch_lp_gpios(const struct pch_lp_gpio_map map[]); diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h index d83dd17..8802be1 100644 --- a/src/southbridge/intel/lynxpoint/pch.h +++ b/src/southbridge/intel/lynxpoint/pch.h @@ -181,8 +181,7 @@ #endif void enable_usb_bar(void); -int early_pch_init(const void *gpio_map, - const struct rcba_config_instruction *rcba_config); +int early_pch_init(const struct rcba_config_instruction *rcba_config); void pch_enable_lpc(void); void mainboard_config_superio(void); -- To view, visit https://review.coreboot.org/c/coreboot/+/36710 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I6d07f0d4d3aaf4e8662d6f7dc8238d14a16fd04d Gerrit-Change-Number: 36710 Gerrit-PatchSet: 1 Gerrit-Owner: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-MessageType: newchange

3 6

Change in coreboot[master]: Documentation: Add cache as ram documentation
by Arthur Heymans (Code Review) Aug. 7, 2023

Aug. 7, 2023

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36126 ) Change subject: Documentation: Add cache as ram documentation ...................................................................... Documentation: Add cache as ram documentation This add documentation around coreboot's history of CAR usage. The history is reconstructed from articles and git/svn history, but should provide a good overview of the challenges and solutions coreboot came up with to deal with early code execution on X86 platforms. The technical details about CAr will come in follow-up patch and are marked as TODO for now. Change-Id: I964d59a6bd210f3d4d06220d2ec7166110ab2cf3 Signed-off-by: Arthur Heymans <arthur(a)aheymans.xyz> --- A Documentation/cpu/index.md A Documentation/cpu/x86/car.md M Documentation/index.md 3 files changed, 171 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/26/36126/1 diff --git a/Documentation/cpu/index.md b/Documentation/cpu/index.md new file mode 100644 index 0000000..d9f063f --- /dev/null +++ b/Documentation/cpu/index.md @@ -0,0 +1,5 @@ +# CPU-specific documentation + +This section contains documentation about coreboot on specific CPU. + +* [A gentle introduction to Cache-as-Ram on X86](x86/car.md) diff --git a/Documentation/cpu/x86/car.md b/Documentation/cpu/x86/car.md new file mode 100644 index 0000000..3d2983e --- /dev/null +++ b/Documentation/cpu/x86/car.md @@ -0,0 +1,165 @@ +# A gentle introduction to Cache-as-Ram on X86 + +This explains a bit of history on CAR in coreboot, how it works +and then finally give a more in depth overview at the steps of +how it is set up on Intel CPUs. + +## Glossary + +- Cache-as-RAM/CAR: Using not memory mapped CPU cache as execution + environment. +- XIP: Execute in place on a memory mapped medium +- SRAM: Static Random Access Memory, here: memory mapped memory + that needs no initialization. +- ROMCC: A C compiler using only the CPU registers. + +## Cache-as-Ram, the basics + +When an X86 platforms boot, it starts in a pretty bare environment. +The first instruction is fetched from the top of the boot medium, +which on most x86 platforms is memory mapped below 4G (in 32bit +protected mode). Not only do they start in 16bit 'real' mode, +most of the hardware starts uninitialized. This includes the dram +controller. Another thing about X86 platforms is that they generally +don't feature SRAM, static RAM. SRAM for this purpose of this text is +a small region of ram that is available without any initialization. +Without RAM this leaves the system with just CPU registers and a +memory mapped boot medium of which code can be executed in place (XIP) +to initialize the hardware. + +For simple dram controllers that environment is just fine and +initializing the dram controller in assembly code without using a +stack is very doable. Modern systems however require complex +initialization procedures and writing that in assembly would be either +too hard or simply impossible. To overcome this limitation a technique +called Cache-as-Ram exists. It allows to use the CPU's Cache-as-Ram. +This in turn makes it possible to write the early initialization code +in a higher level programming language compiled by a regular compiler, +e.g. GCC. Typically only the stack is placed in Cache-as-Ram and the +code is still executed in place, but copying code in the cache as ram +and executing from there is also possible. + +For coreboot this means that with only a very small amount of assembly +code to set up CAR, all the other code can written in C, which +compared to writing assembly tremendously increases development speed +and is much less error prone. + +## A bit of history on Cache-as-Ram in coreboot + +### Linux as a BIOS? The invention of romstage + +When LinuxBIOS, later coreboot, started out, the first naive attempt +to run the Linux kernel instead of the legacy BIOS interface, was to +jump straight to loading the kernel. This did not work at all, since +dram was not working at that point. LinuxBIOS v1 therefore +initialized the memory in assembly before it was able to load the +kernel. This executed in place and would later become romstage. It +turned that Linux needed other devices, like enumerated and have it's +resources allocated, so yet another stage, ramstage, was called into +life, but that's another story. + +### coreboot v2: romcc + +In 2003 AMD's K8 CPU's came out. Those CPU's featured an on die memory +controller and also a new point to point BUS for CPU <-> CPU and +CPU <-> IO controller (northbridge) devices. Writing support for +these in assembly became difficult and a better solution was needed. +This is where ROMCC came to the rescue in 2002. ROMCC is a 25K lines +of code C compiler, written by Eric Biederman, that does not use a +stack but uses CPU registers instead. Besides the 8 general purpose +registers on x86 the MMX and SSE registers, respectively _%mm0_-_%mm7_ +and _%xmm0_-_%xmm7_, can be used to store data. ROMCC also converts +all function calls to static inline functions. This has the +disadvantage that a ROMCC compiled stage must be compiled in one go, +linking is not possible. In practice you will see a lot of '#include +_some_file.c_' which is quite unusual in C, because it makes the +inclusion of files fragile. Given that limited amount +'register-stack', it also imposes restrictions on how many levels of +nested function can be achieved. One last issue with ROMCC is that +no-one really dared touching that code, due to its size and complexity +besides its original author. + +Coreboot used ROMCC in the following way: a bootblock written in both +assembly to enter 32bit protected mode would use ROMCC compiled code +to either jump to 'normal/romstage' or 'fallback/romstage' which in +turn was also compiled with romstage. + +### Cache-as-Ram + +While ROMCC was eventually used for early initialization, prior to +that development attempts were made to use the CPU's cache as RAM. +This would allow to use regular GCC compiled and linked code to +be used. The idea is to set up the CPU's cache to Write Back to a +region, while disable cacheline filling or simply hope that no cache +eviction or invalidation happens. Eric Biederman initially got CAR +working, but with the advent of Intel Hyperthreading on the Pentium 4, +on which CAR setup proved to be a little more difficult and he +developed ROMCC instead. + +Around 2006 a lot was learned from coreboot v2 with its ROMCC usage +and development on coreboot v3 was started. The decision was mode to +not use ROMCC anymore and use Cache Memory for early stages. The +results were good as init object code size is reduced by factor of +four. So the code was smaller and faster at the same time. + +coreboot v4 sort of merged v2 and v3, so it was a mix of ROMCC compiled +romstage and romstage with CAR. + +In 2014 Support for ROMCC compiled romstage was dropped. + +### Intel Apollolake, a new era: POSTCAR_STAGE and C_ENVIRONMENT_BOOTBLOCK + +In 2016 Intel released the ApolloLake architecture. This architecture +is a weird duck in the X86 pool. It is the first Intel CPU to feature +MMC as a boot medium and does not memory map it. It also features to +the main CPU read only SRAM that is mapped right below 4G. The +bootblock is copied to SRAM and executed. Given that the boot medium +is not always memory mapped XIP is not an option. The solution is to +set up CAR in the bootblock and copy the romstage in CAR. We call this +C_ENVIRONMENT_BOOTBLOCK, because it runs GCC compiled code. Granted +XIP is still possible on ApolloLake, but coreboot has to use Intel's +blob, FSP-M, and it is linked to run in CAR, so a blob actually forced +a nice feature in coreboot! + +Another issue arises with this setup. With romstage running from the +read only boot medium, you can continue executing code (albeit without +stack) to tear down the CAR and start executing code from 'real' RAM. +On ApolloLake with romstage executing from CAR, tearing down CAR in +there, would shooting in ones own foot, as our code would be gone +in doing so. The solution was to tear down CAR in a separate stage, +named 'postcar' stage. This provides a clean separation of programs +and results in needing less linker scripts hacks in romstage. This +solution was therefore adopted by many other platforms that still did +XIP. + +### AMD Zen, 2019 + +On AMD Zen the first CPU to come out of reset is the PSP and it +initializes the dram before pulling out the main CPU out of reset. +CAR won't be needed, nor used on this platform. + +### The future? + +For coreboot release 4.11, scheduled for october 2019, support for +ROMCC in the bootblock will be dropped as will support for the messy +tearing down of CAR in romstage as opposed to doing that in a separate +stage. + +## In depth analysis + +### CAR setup + +TODO: MTRR, IPI/hyperthreaded, ROM Caching, Non-evict + +### Linker symbols + +TODO: sharing things over multiple CAR stages: car.ld + +### CAR teardown + +TODO: postcarstage, NO_CAR_GLOBAL_MIGRATION + +## References +[2007, The Open Source BIOS is Ten An interview with the coreboot developers](http://www.h-online.com/open/features/The-Open-Source-BIOS-is-T… +[A Framework for Using Processor Cache-as-Ram (CAR)](https://www.coreboot.org/images/6/6c/LBCar.pdf) +[CAR: Using Cache-as-Ram in LinuxBIOS](https://www.coreboot.org/data/yhlu/cache_as_ram_lb_09142006.pdf) diff --git a/Documentation/index.md b/Documentation/index.md index 1c04ad3..85666cb 100644 --- a/Documentation/index.md +++ b/Documentation/index.md @@ -177,6 +177,7 @@ * [Display panel-specific documentation](gfx/display-panel.md) * [Architecture-specific documentation](arch/index.md) * [Platform independend drivers documentation](drivers/index.md) +* [CPU-specific documentation](cpu/index.md) * [Northbridge-specific documentation](northbridge/index.md) * [System on Chip-specific documentation](soc/index.md) * [Mainboard-specific documentation](mainboard/index.md) -- To view, visit https://review.coreboot.org/c/coreboot/+/36126 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I964d59a6bd210f3d4d06220d2ec7166110ab2cf3 Gerrit-Change-Number: 36126 Gerrit-PatchSet: 1 Gerrit-Owner: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-MessageType: newchange

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Change in coreboot[master]: soc/intel/skylake: Add romstage common stage file
by Bernardo Perez Priego (Code Review) Aug. 7, 2023

Aug. 7, 2023

Bernardo Perez Priego has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/42213 ) Change subject: soc/intel/skylake: Add romstage common stage file ...................................................................... soc/intel/skylake: Add romstage common stage file Change-Id: I31dc5baca23c3d339fbe5fb06b8049789d9ba415 Signed-off-by: Bernardo Perez Priego <bernardo.perez.priego(a)intel.com> --- M src/soc/intel/skylake/Kconfig M src/soc/intel/skylake/Makefile.inc M src/soc/intel/skylake/include/soc/romstage.h M src/soc/intel/skylake/romstage/Makefile.inc D src/soc/intel/skylake/romstage/pch.c M src/soc/intel/skylake/romstage/romstage.c 6 files changed, 13 insertions(+), 29 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/13/42213/1 diff --git a/src/soc/intel/skylake/Kconfig b/src/soc/intel/skylake/Kconfig index 27c1084..c7b61bd 100644 --- a/src/soc/intel/skylake/Kconfig +++ b/src/soc/intel/skylake/Kconfig @@ -81,6 +81,8 @@ select TSC_SYNC_MFENCE select UDELAY_TSC select UDK_2015_BINDING + select SOC_INTEL_COMMON_BASECODE + select SOC_INTEL_COMMON_BASECODE_ROMSTAGE config FSP_HYPERTHREADING bool "Enable Hyper-Threading" diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc index 75121ab..ee81567 100644 --- a/src/soc/intel/skylake/Makefile.inc +++ b/src/soc/intel/skylake/Makefile.inc @@ -106,6 +106,7 @@ CPPFLAGS_common += -I$(src)/soc/intel/skylake CPPFLAGS_common += -I$(src)/soc/intel/skylake/include +CPPFLAGS_common += -I$(src)/soc/intel/common/basecode/include # Currently used for microcode path. CPPFLAGS_common += -I3rdparty/blobs/mainboard/$(MAINBOARDDIR) diff --git a/src/soc/intel/skylake/include/soc/romstage.h b/src/soc/intel/skylake/include/soc/romstage.h index b9eea98..cb11f50 100644 --- a/src/soc/intel/skylake/include/soc/romstage.h +++ b/src/soc/intel/skylake/include/soc/romstage.h @@ -7,7 +7,6 @@ void mainboard_memory_init_params(FSPM_UPD *mupd); void systemagent_early_init(void); -void romstage_pch_init(void); int smbus_read_byte(unsigned int device, unsigned int address); /* Board type */ enum board_type { diff --git a/src/soc/intel/skylake/romstage/Makefile.inc b/src/soc/intel/skylake/romstage/Makefile.inc index 1b069b6..dff89ce 100644 --- a/src/soc/intel/skylake/romstage/Makefile.inc +++ b/src/soc/intel/skylake/romstage/Makefile.inc @@ -1,4 +1,3 @@ romstage-y += ../../../../cpu/intel/car/romstage.c romstage-y += romstage.c romstage-y += systemagent.c -romstage-y += pch.c diff --git a/src/soc/intel/skylake/romstage/pch.c b/src/soc/intel/skylake/romstage/pch.c deleted file mode 100644 index c85bdd6..0000000 --- a/src/soc/intel/skylake/romstage/pch.c +++ /dev/null @@ -1,14 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#include <intelblocks/smbus.h> -#include <intelblocks/tco.h> -#include <soc/romstage.h> - -void romstage_pch_init(void) -{ - /* Program TCO_BASE_ADDRESS and TCO Timer Halt */ - tco_configure(); - - /* Program SMBUS_BASE_ADDRESS and enable it */ - smbus_common_init(); -} diff --git a/src/soc/intel/skylake/romstage/romstage.c b/src/soc/intel/skylake/romstage/romstage.c index 99f444a..c709cf8 100644 --- a/src/soc/intel/skylake/romstage/romstage.c +++ b/src/soc/intel/skylake/romstage/romstage.c @@ -21,6 +21,7 @@ #include <soc/systemagent.h> #include <string.h> #include <security/vboot/vboot_common.h> +#include <intelbasecode/romstage.h> #include "../chip.h" @@ -37,6 +38,8 @@ CHANNEL_PRESENT }; +void romstage_cpu_init(void) {/*Stub function*/} + /* Save the DIMM information for SMBIOS table 17 */ static void save_dimm_info(void) { @@ -126,20 +129,10 @@ printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt); } -void mainboard_romstage_entry(void) +void romstage_soc_post_mem_init(void) { - bool s3wake; - struct chipset_power_state *ps; - - /* Program MCHBAR, DMIBAR, GDXBAR and EDRAMBAR */ - systemagent_early_init(); - /* Program PCH init */ - romstage_pch_init(); - ps = pmc_get_power_state(); - s3wake = pmc_fill_power_state(ps) == ACPI_S3; - fsp_memory_init(s3wake); pmc_set_disb(); - if (!s3wake) + if (!romstage_is_s3wake()) save_dimm_info(); } @@ -269,7 +262,7 @@ m_cfg->PrimaryDisplay = config->PrimaryDisplay; } -void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version) +void romstage_soc_mem_init_params(FSPM_UPD *mupd, uint32_t version) { const struct soc_intel_skylake_config *config; FSP_M_CONFIG *m_cfg = &mupd->FspmConfig; @@ -303,6 +296,10 @@ soc_primary_gfx_config_params(m_cfg, config); m_t_cfg->SkipExtGfxScan = config->SkipExtGfxScan; +} + +void romstage_mb_mem_init_params(FSPM_UPD *mupd) +{ mainboard_memory_init_params(mupd); } -- To view, visit https://review.coreboot.org/c/coreboot/+/42213 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I31dc5baca23c3d339fbe5fb06b8049789d9ba415 Gerrit-Change-Number: 42213 Gerrit-PatchSet: 1 Gerrit-Owner: Bernardo Perez Priego <bernardo.perez.priego(a)intel.com> Gerrit-MessageType: newchange

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