coreboot-gerrit January 2020

coreboot-gerrit@coreboot.org

1 participants
1869 discussions

Change in ...coreboot[master]: mainboard/samsung/350v5c: add initial board files
by Kacper Słomiński (Code Review) 07 Aug '23

07 Aug '23

Kacper Słomiński has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/30942 Change subject: mainboard/samsung/350v5c: add initial board files ...................................................................... mainboard/samsung/350v5c: add initial board files Signed-off-by: Kacper Słomiński <kacper.slominski72(a)gmail.com> Change-Id: I64fcf931938fb3b158b9576b787f452bf6077843 --- A src/mainboard/samsung/350v5c/Kconfig A src/mainboard/samsung/350v5c/Kconfig.name A src/mainboard/samsung/350v5c/Makefile.inc A src/mainboard/samsung/350v5c/acpi/ec.asl A src/mainboard/samsung/350v5c/acpi/platform.asl A src/mainboard/samsung/350v5c/acpi/superio.asl A src/mainboard/samsung/350v5c/acpi_tables.c A src/mainboard/samsung/350v5c/board_info.txt A src/mainboard/samsung/350v5c/devicetree.cb A src/mainboard/samsung/350v5c/dsdt.asl A src/mainboard/samsung/350v5c/gnvs.c A src/mainboard/samsung/350v5c/gpio.c A src/mainboard/samsung/350v5c/hda_verb.c A src/mainboard/samsung/350v5c/mainboard.c A src/mainboard/samsung/350v5c/romstage.c 15 files changed, 705 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/42/30942/1 diff --git a/src/mainboard/samsung/350v5c/Kconfig b/src/mainboard/samsung/350v5c/Kconfig new file mode 100644 index 0000000..5ec7139 --- /dev/null +++ b/src/mainboard/samsung/350v5c/Kconfig @@ -0,0 +1,53 @@ +if BOARD_SAMSUNG_350V5C + +config BOARD_SPECIFIC_OPTIONS + def_bool y + select BOARD_ROMSIZE_KB_6144 + select CPU_INTEL_SOCKET_RPGA989 + select EC_ACPI + select HAVE_ACPI_RESUME + select HAVE_ACPI_TABLES + select INTEL_INT15 + select NORTHBRIDGE_INTEL_IVYBRIDGE + select SANDYBRIDGE_IVYBRIDGE_LVDS + select SERIRQ_CONTINUOUS_MODE + select SOUTHBRIDGE_INTEL_C216 + select SYSTEM_TYPE_LAPTOP + select USE_NATIVE_RAMINIT + +config MAINBOARD_DIR + string + default samsung/350v5c + +config MAINBOARD_PART_NUMBER + string + default "350V5C" + +config VGA_BIOS_FILE + string + default "pci8086,0166.rom" + +config VGA_BIOS_ID + string + default "8086,0166" + +config MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID + hex + default 0xc0d8 + +config MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID + hex + default 0x144d + +config DRAM_RESET_GATE_GPIO # FIXME: check this + int + default 60 + +config MAX_CPUS + int + default 8 + +config USBDEBUG_HCD_INDEX # FIXME: check this + int + default 2 +endif diff --git a/src/mainboard/samsung/350v5c/Kconfig.name b/src/mainboard/samsung/350v5c/Kconfig.name new file mode 100644 index 0000000..9a2e96a --- /dev/null +++ b/src/mainboard/samsung/350v5c/Kconfig.name @@ -0,0 +1,2 @@ +config BOARD_SAMSUNG_350V5C + bool "350V5C" diff --git a/src/mainboard/samsung/350v5c/Makefile.inc b/src/mainboard/samsung/350v5c/Makefile.inc new file mode 100644 index 0000000..c55eebe --- /dev/null +++ b/src/mainboard/samsung/350v5c/Makefile.inc @@ -0,0 +1,2 @@ +romstage-y += gpio.c +ramstage-y += gnvs.c diff --git a/src/mainboard/samsung/350v5c/acpi/ec.asl b/src/mainboard/samsung/350v5c/acpi/ec.asl new file mode 100644 index 0000000..f2f4269 --- /dev/null +++ b/src/mainboard/samsung/350v5c/acpi/ec.asl @@ -0,0 +1,7 @@ +Device(EC) +{ + Name (_HID, EISAID("PNP0C09")) + Name (_UID, 0) + Name (_GPE, 23) +/* FIXME: EC support */ +} diff --git a/src/mainboard/samsung/350v5c/acpi/platform.asl b/src/mainboard/samsung/350v5c/acpi/platform.asl new file mode 100644 index 0000000..c2862c9 --- /dev/null +++ b/src/mainboard/samsung/350v5c/acpi/platform.asl @@ -0,0 +1,10 @@ +Method(_WAK,1) +{ + /* FIXME: EC support */ + Return(Package(){0,0}) +} + +Method(_PTS,1) +{ + /* FIXME: EC support */ +} diff --git a/src/mainboard/samsung/350v5c/acpi/superio.asl b/src/mainboard/samsung/350v5c/acpi/superio.asl new file mode 100644 index 0000000..f2b35ba --- /dev/null +++ b/src/mainboard/samsung/350v5c/acpi/superio.asl @@ -0,0 +1 @@ +#include <drivers/pc80/pc/ps2_controller.asl> diff --git a/src/mainboard/samsung/350v5c/acpi_tables.c b/src/mainboard/samsung/350v5c/acpi_tables.c new file mode 100644 index 0000000..2997587 --- /dev/null +++ b/src/mainboard/samsung/350v5c/acpi_tables.c @@ -0,0 +1 @@ +/* dummy */ diff --git a/src/mainboard/samsung/350v5c/board_info.txt b/src/mainboard/samsung/350v5c/board_info.txt new file mode 100644 index 0000000..cdbf8b8 --- /dev/null +++ b/src/mainboard/samsung/350v5c/board_info.txt @@ -0,0 +1,4 @@ +Category: laptop +ROM protocol: SPI +Flashrom support: n +FIXME: put ROM package, ROM socketed, Release year diff --git a/src/mainboard/samsung/350v5c/devicetree.cb b/src/mainboard/samsung/350v5c/devicetree.cb new file mode 100644 index 0000000..91093c0 --- /dev/null +++ b/src/mainboard/samsung/350v5c/devicetree.cb @@ -0,0 +1,119 @@ +chip northbridge/intel/sandybridge # FIXME: check gfx.ndid and gfx.did + register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }" + register "gfx.link_frequency_270_mhz" = "0" + register "gfx.ndid" = "3" + register "gfx.use_spread_spectrum_clock" = "0" + register "gpu_cpu_backlight" = "0x00000000" + register "gpu_dp_b_hotplug" = "0" + register "gpu_dp_c_hotplug" = "0" + register "gpu_dp_d_hotplug" = "0" + register "gpu_panel_port_select" = "0" + register "gpu_panel_power_backlight_off_delay" = "0" + register "gpu_panel_power_backlight_on_delay" = "0" + register "gpu_panel_power_cycle_delay" = "0" + register "gpu_panel_power_down_delay" = "0" + register "gpu_panel_power_up_delay" = "0" + register "gpu_pch_backlight" = "0x00000000" + device cpu_cluster 0x0 on + chip cpu/intel/socket_rPGA989 + device lapic 0x0 on + end + end + chip cpu/intel/model_206ax # FIXME: check all registers + register "c1_acpower" = "1" + register "c1_battery" = "1" + register "c2_acpower" = "3" + register "c2_battery" = "3" + register "c3_acpower" = "5" + register "c3_battery" = "5" + device lapic 0xacac off + end + end + end + device domain 0x0 on + chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH + register "c2_latency" = "0x0065" + register "docking_supported" = "1" + register "gen1_dec" = "0x00040069" + register "gen2_dec" = "0x0004fd61" + register "gen3_dec" = "0x00000000" + register "gen4_dec" = "0x00000000" + register "gpi7_routing" = "2" + register "p_cnt_throttling_supported" = "0" + register "pcie_hotplug_map" = "{ 0, 0, 0, 0, 0, 0, 0, 0 }" + register "pcie_port_coalesce" = "1" + register "sata_interface_speed_support" = "0x3" + register "sata_port_map" = "0x11" + register "spi_lvscc" = "0x2005" + register "spi_uvscc" = "0x2005" + register "superspeed_capable_ports" = "0x0000000f" + register "xhci_overcurrent_mapping" = "0x00000c03" + register "xhci_switchable_ports" = "0x0000000f" + device pci 14.0 on # USB 3.0 Controller + subsystemid 0x144d 0xc0d8 + end + device pci 16.0 on # Management Engine Interface 1 + subsystemid 0x144d 0xc0d8 + end + device pci 16.1 off # Management Engine Interface 2 + end + device pci 16.2 off # Management Engine IDE-R + end + device pci 16.3 off # Management Engine KT + end + device pci 19.0 off # Intel Gigabit Ethernet + end + device pci 1a.0 on # USB2 EHCI #2 + subsystemid 0x144d 0xc0d8 + end + device pci 1b.0 on # High Definition Audio Audio controller + subsystemid 0x144d 0xc0d8 + end + device pci 1c.0 on # PCIe Port #1 + subsystemid 0x144d 0xc0d8 + end + device pci 1c.1 on # PCIe Port #2 + subsystemid 0x144d 0xc0d8 + end + device pci 1c.2 off # PCIe Port #3 + end + device pci 1c.3 off # PCIe Port #4 + end + device pci 1c.4 off # PCIe Port #5 + end + device pci 1c.5 off # PCIe Port #6 + end + device pci 1c.6 off # PCIe Port #7 + end + device pci 1c.7 off # PCIe Port #8 + end + device pci 1d.0 on # USB2 EHCI #1 + subsystemid 0x144d 0xc0d8 + end + device pci 1e.0 off # PCI bridge + end + device pci 1f.0 on # LPC bridge PCI-LPC bridge + subsystemid 0x144d 0xc0d8 + end + device pci 1f.2 on # SATA Controller 1 + subsystemid 0x144d 0xc0d8 + end + device pci 1f.3 on # SMBus + subsystemid 0x144d 0xc0d8 + end + device pci 1f.5 off # SATA Controller 2 + end + device pci 1f.6 off # Thermal + end + end + device pci 00.0 on # Host bridge Host bridge + subsystemid 0x144d 0xc0d8 + end + device pci 01.0 on # PCIe Bridge for discrete graphics + subsystemid 0x144d 0xc0d8 + end + device pci 02.0 on # Internal graphics VGA controller + subsystemid 0x144d 0xc0d8 + end + end +end diff --git a/src/mainboard/samsung/350v5c/dsdt.asl b/src/mainboard/samsung/350v5c/dsdt.asl new file mode 100644 index 0000000..fb55547 --- /dev/null +++ b/src/mainboard/samsung/350v5c/dsdt.asl @@ -0,0 +1,30 @@ +#define BRIGHTNESS_UP \_SB.PCI0.GFX0.INCB +#define BRIGHTNESS_DOWN \_SB.PCI0.GFX0.DECB +#define ACPI_VIDEO_DEVICE \_SB.PCI0.GFX0 +#include <arch/acpi.h> +DefinitionBlock( + "dsdt.aml", + "DSDT", + 0x02, // DSDT revision: ACPI 2.0 and up + OEM_ID, + ACPI_TABLE_CREATOR, + 0x20141018 // OEM revision +) +{ + // Some generic macros + #include "acpi/platform.asl" + #include <cpu/intel/model_206ax/acpi/cpu.asl> + #include <southbridge/intel/bd82x6x/acpi/platform.asl> + /* global NVS and variables. */ + #include <southbridge/intel/bd82x6x/acpi/globalnvs.asl> + #include <southbridge/intel/bd82x6x/acpi/sleepstates.asl> + + Scope (\_SB) { + Device (PCI0) + { + #include <northbridge/intel/sandybridge/acpi/sandybridge.asl> + #include <drivers/intel/gma/acpi/default_brightness_levels.asl> + #include <southbridge/intel/bd82x6x/acpi/pch.asl> + } + } +} diff --git a/src/mainboard/samsung/350v5c/gnvs.c b/src/mainboard/samsung/350v5c/gnvs.c new file mode 100644 index 0000000..6b731cc --- /dev/null +++ b/src/mainboard/samsung/350v5c/gnvs.c @@ -0,0 +1,36 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2014 Vladimir Serbinenko + * + * 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 <southbridge/intel/bd82x6x/nvs.h> + +/* FIXME: check this function. */ +void acpi_create_gnvs(global_nvs_t *gnvs) +{ + /* Disable USB ports in S3 by default */ + gnvs->s3u0 = 0; + gnvs->s3u1 = 0; + + /* Disable USB ports in S5 by default */ + gnvs->s5u0 = 0; + gnvs->s5u1 = 0; + + // the lid is open by default. + gnvs->lids = 1; + + gnvs->tcrt = 100; + gnvs->tpsv = 90; +} diff --git a/src/mainboard/samsung/350v5c/gpio.c b/src/mainboard/samsung/350v5c/gpio.c new file mode 100644 index 0000000..6bf860f --- /dev/null +++ b/src/mainboard/samsung/350v5c/gpio.c @@ -0,0 +1,232 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2014 Vladimir Serbinenko + * + * 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 <southbridge/intel/common/gpio.h> + +static const struct pch_gpio_set1 pch_gpio_set1_mode = { + .gpio0 = GPIO_MODE_GPIO, + .gpio1 = GPIO_MODE_GPIO, + .gpio2 = GPIO_MODE_GPIO, + .gpio3 = GPIO_MODE_GPIO, + .gpio4 = GPIO_MODE_GPIO, + .gpio5 = GPIO_MODE_GPIO, + .gpio6 = GPIO_MODE_GPIO, + .gpio7 = GPIO_MODE_GPIO, + .gpio8 = GPIO_MODE_GPIO, + .gpio9 = GPIO_MODE_NATIVE, + .gpio10 = GPIO_MODE_NATIVE, + .gpio11 = GPIO_MODE_GPIO, + .gpio12 = GPIO_MODE_GPIO, + .gpio13 = GPIO_MODE_NATIVE, + .gpio14 = GPIO_MODE_GPIO, + .gpio15 = GPIO_MODE_GPIO, + .gpio16 = GPIO_MODE_NATIVE, + .gpio17 = GPIO_MODE_GPIO, + .gpio18 = GPIO_MODE_NATIVE, + .gpio19 = GPIO_MODE_NATIVE, + .gpio20 = GPIO_MODE_NATIVE, + .gpio21 = GPIO_MODE_NATIVE, + .gpio22 = GPIO_MODE_GPIO, + .gpio23 = GPIO_MODE_NATIVE, + .gpio24 = GPIO_MODE_GPIO, + .gpio25 = GPIO_MODE_NATIVE, + .gpio26 = GPIO_MODE_NATIVE, + .gpio27 = GPIO_MODE_GPIO, + .gpio28 = GPIO_MODE_GPIO, + .gpio29 = GPIO_MODE_GPIO, + .gpio30 = GPIO_MODE_NATIVE, + .gpio31 = GPIO_MODE_NATIVE, +}; + +static const struct pch_gpio_set1 pch_gpio_set1_direction = { + .gpio0 = GPIO_DIR_INPUT, + .gpio1 = GPIO_DIR_INPUT, + .gpio2 = GPIO_DIR_INPUT, + .gpio3 = GPIO_DIR_INPUT, + .gpio4 = GPIO_DIR_OUTPUT, + .gpio5 = GPIO_DIR_INPUT, + .gpio6 = GPIO_DIR_INPUT, + .gpio7 = GPIO_DIR_INPUT, + .gpio8 = GPIO_DIR_INPUT, + .gpio11 = GPIO_DIR_INPUT, + .gpio12 = GPIO_DIR_OUTPUT, + .gpio14 = GPIO_DIR_INPUT, + .gpio15 = GPIO_DIR_INPUT, + .gpio17 = GPIO_DIR_INPUT, + .gpio22 = GPIO_DIR_INPUT, + .gpio24 = GPIO_DIR_OUTPUT, + .gpio27 = GPIO_DIR_OUTPUT, + .gpio28 = GPIO_DIR_OUTPUT, + .gpio29 = GPIO_DIR_OUTPUT, +}; + +static const struct pch_gpio_set1 pch_gpio_set1_level = { + .gpio4 = GPIO_LEVEL_LOW, + .gpio12 = GPIO_LEVEL_HIGH, + .gpio24 = GPIO_LEVEL_LOW, + .gpio27 = GPIO_LEVEL_LOW, + .gpio28 = GPIO_LEVEL_LOW, + .gpio29 = GPIO_LEVEL_HIGH, +}; + +static const struct pch_gpio_set1 pch_gpio_set1_reset = { + .gpio24 = GPIO_RESET_RSMRST, + .gpio30 = GPIO_RESET_RSMRST, +}; + +static const struct pch_gpio_set1 pch_gpio_set1_invert = { + .gpio1 = GPIO_INVERT, + .gpio3 = GPIO_INVERT, + .gpio7 = GPIO_INVERT, + .gpio8 = GPIO_INVERT, + .gpio15 = GPIO_INVERT, +}; + +static const struct pch_gpio_set1 pch_gpio_set1_blink = { +}; + +static const struct pch_gpio_set2 pch_gpio_set2_mode = { + .gpio32 = GPIO_MODE_NATIVE, + .gpio33 = GPIO_MODE_NATIVE, + .gpio34 = GPIO_MODE_GPIO, + .gpio35 = GPIO_MODE_GPIO, + .gpio36 = GPIO_MODE_NATIVE, + .gpio37 = GPIO_MODE_GPIO, + .gpio38 = GPIO_MODE_GPIO, + .gpio39 = GPIO_MODE_GPIO, + .gpio40 = GPIO_MODE_NATIVE, + .gpio41 = GPIO_MODE_NATIVE, + .gpio42 = GPIO_MODE_GPIO, + .gpio43 = GPIO_MODE_NATIVE, + .gpio44 = GPIO_MODE_NATIVE, + .gpio45 = GPIO_MODE_GPIO, + .gpio46 = GPIO_MODE_GPIO, + .gpio47 = GPIO_MODE_NATIVE, + .gpio48 = GPIO_MODE_GPIO, + .gpio49 = GPIO_MODE_GPIO, + .gpio50 = GPIO_MODE_GPIO, + .gpio51 = GPIO_MODE_GPIO, + .gpio52 = GPIO_MODE_GPIO, + .gpio53 = GPIO_MODE_GPIO, + .gpio54 = GPIO_MODE_GPIO, + .gpio55 = GPIO_MODE_GPIO, + .gpio56 = GPIO_MODE_GPIO, + .gpio57 = GPIO_MODE_GPIO, + .gpio58 = GPIO_MODE_NATIVE, + .gpio59 = GPIO_MODE_NATIVE, + .gpio60 = GPIO_MODE_GPIO, + .gpio61 = GPIO_MODE_GPIO, + .gpio62 = GPIO_MODE_NATIVE, + .gpio63 = GPIO_MODE_NATIVE, +}; + +static const struct pch_gpio_set2 pch_gpio_set2_direction = { + .gpio34 = GPIO_DIR_OUTPUT, + .gpio35 = GPIO_DIR_OUTPUT, + .gpio37 = GPIO_DIR_OUTPUT, + .gpio38 = GPIO_DIR_INPUT, + .gpio39 = GPIO_DIR_INPUT, + .gpio42 = GPIO_DIR_OUTPUT, + .gpio45 = GPIO_DIR_INPUT, + .gpio46 = GPIO_DIR_INPUT, + .gpio48 = GPIO_DIR_INPUT, + .gpio49 = GPIO_DIR_OUTPUT, + .gpio50 = GPIO_DIR_OUTPUT, + .gpio51 = GPIO_DIR_OUTPUT, + .gpio52 = GPIO_DIR_OUTPUT, + .gpio53 = GPIO_DIR_OUTPUT, + .gpio54 = GPIO_DIR_OUTPUT, + .gpio55 = GPIO_DIR_OUTPUT, + .gpio56 = GPIO_DIR_INPUT, + .gpio57 = GPIO_DIR_INPUT, + .gpio60 = GPIO_DIR_OUTPUT, + .gpio61 = GPIO_DIR_OUTPUT, +}; + +static const struct pch_gpio_set2 pch_gpio_set2_level = { + .gpio34 = GPIO_LEVEL_LOW, + .gpio35 = GPIO_LEVEL_HIGH, + .gpio37 = GPIO_LEVEL_LOW, + .gpio42 = GPIO_LEVEL_LOW, + .gpio49 = GPIO_LEVEL_LOW, + .gpio50 = GPIO_LEVEL_HIGH, + .gpio51 = GPIO_LEVEL_HIGH, + .gpio52 = GPIO_LEVEL_HIGH, + .gpio53 = GPIO_LEVEL_HIGH, + .gpio54 = GPIO_LEVEL_HIGH, + .gpio55 = GPIO_LEVEL_HIGH, + .gpio60 = GPIO_LEVEL_HIGH, + .gpio61 = GPIO_LEVEL_HIGH, +}; + +static const struct pch_gpio_set2 pch_gpio_set2_reset = { +}; + +static const struct pch_gpio_set3 pch_gpio_set3_mode = { + .gpio64 = GPIO_MODE_NATIVE, + .gpio65 = GPIO_MODE_NATIVE, + .gpio66 = GPIO_MODE_GPIO, + .gpio67 = GPIO_MODE_GPIO, + .gpio68 = GPIO_MODE_GPIO, + .gpio69 = GPIO_MODE_GPIO, + .gpio70 = GPIO_MODE_NATIVE, + .gpio71 = GPIO_MODE_NATIVE, + .gpio72 = GPIO_MODE_NATIVE, + .gpio73 = GPIO_MODE_NATIVE, + .gpio74 = GPIO_MODE_GPIO, + .gpio75 = GPIO_MODE_NATIVE, +}; + +static const struct pch_gpio_set3 pch_gpio_set3_direction = { + .gpio66 = GPIO_DIR_OUTPUT, + .gpio67 = GPIO_DIR_INPUT, + .gpio68 = GPIO_DIR_OUTPUT, + .gpio69 = GPIO_DIR_INPUT, + .gpio74 = GPIO_DIR_OUTPUT, +}; + +static const struct pch_gpio_set3 pch_gpio_set3_level = { + .gpio66 = GPIO_LEVEL_LOW, + .gpio68 = GPIO_LEVEL_LOW, + .gpio74 = GPIO_LEVEL_HIGH, +}; + +static const struct pch_gpio_set3 pch_gpio_set3_reset = { +}; + +const struct pch_gpio_map mainboard_gpio_map = { + .set1 = { + .mode = &pch_gpio_set1_mode, + .direction = &pch_gpio_set1_direction, + .level = &pch_gpio_set1_level, + .blink = &pch_gpio_set1_blink, + .invert = &pch_gpio_set1_invert, + .reset = &pch_gpio_set1_reset, + }, + .set2 = { + .mode = &pch_gpio_set2_mode, + .direction = &pch_gpio_set2_direction, + .level = &pch_gpio_set2_level, + .reset = &pch_gpio_set2_reset, + }, + .set3 = { + .mode = &pch_gpio_set3_mode, + .direction = &pch_gpio_set3_direction, + .level = &pch_gpio_set3_level, + .reset = &pch_gpio_set3_reset, + }, +}; diff --git a/src/mainboard/samsung/350v5c/hda_verb.c b/src/mainboard/samsung/350v5c/hda_verb.c new file mode 100644 index 0000000..d05fc02 --- /dev/null +++ b/src/mainboard/samsung/350v5c/hda_verb.c @@ -0,0 +1,76 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2014 Vladimir Serbinenko + * + * 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 <device/azalia_device.h> + +const u32 cim_verb_data[] = { + 0x10ec0269, /* Codec Vendor / Device ID: Realtek */ + 0x144dc0d8, /* Subsystem ID */ + + 0x0000000b, /* Number of 4 dword sets */ + /* NID 0x01: Subsystem ID. */ + AZALIA_SUBVENDOR(0x0, 0x144dc0d8), + + /* NID 0x12. */ + AZALIA_PIN_CFG(0x0, 0x12, 0x411111f0), + + /* NID 0x14. */ + AZALIA_PIN_CFG(0x0, 0x14, 0x90170110), + + /* NID 0x15. */ + AZALIA_PIN_CFG(0x0, 0x15, 0x0421101f), + + /* NID 0x17. */ + AZALIA_PIN_CFG(0x0, 0x17, 0x411111f0), + + /* NID 0x18. */ + AZALIA_PIN_CFG(0x0, 0x18, 0x04a11820), + + /* NID 0x19. */ + AZALIA_PIN_CFG(0x0, 0x19, 0x90a7092f), + + /* NID 0x1a. */ + AZALIA_PIN_CFG(0x0, 0x1a, 0x411111f0), + + /* NID 0x1b. */ + AZALIA_PIN_CFG(0x0, 0x1b, 0x411111f0), + + /* NID 0x1d. */ + AZALIA_PIN_CFG(0x0, 0x1d, 0x4005822d), + + /* NID 0x1e. */ + AZALIA_PIN_CFG(0x0, 0x1e, 0x411111f0), + 0x80862806, /* Codec Vendor / Device ID: Intel */ + 0x144dc0d8, /* Subsystem ID */ + + 0x00000004, /* Number of 4 dword sets */ + /* NID 0x01: Subsystem ID. */ + AZALIA_SUBVENDOR(0x3, 0x144dc0d8), + + /* NID 0x05. */ + AZALIA_PIN_CFG(0x3, 0x05, 0x18560010), + + /* NID 0x06. */ + AZALIA_PIN_CFG(0x3, 0x06, 0x58560020), + + /* NID 0x07. */ + AZALIA_PIN_CFG(0x3, 0x07, 0x58560030), +}; + +const u32 pc_beep_verbs[0] = {}; + +AZALIA_ARRAY_SIZES; diff --git a/src/mainboard/samsung/350v5c/mainboard.c b/src/mainboard/samsung/350v5c/mainboard.c new file mode 100644 index 0000000..44f4fa4 --- /dev/null +++ b/src/mainboard/samsung/350v5c/mainboard.c @@ -0,0 +1,50 @@ +#include <device/device.h> +#include <drivers/intel/gma/int15.h> +#include <southbridge/intel/bd82x6x/pch.h> +#include <ec/acpi/ec.h> +#include <console/console.h> +#include <pc80/keyboard.h> + +static void mainboard_init(struct device *dev) +{ + /* FIXME: trim this down or remove if necessary */ + { + int i; + const u8 dmp[256] = { + /* 00 */ 0x00, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 10 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 20 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 30 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 40 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 50 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 60 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 70 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 80 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* 90 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* a0 */ 0x00, 0x04, 0x00, 0x84, 0xc1, 0x00, 0x00, 0x61, 0x64, 0x00, 0x00, 0x08, 0x64, 0x19, 0x00, 0xd8, + /* b0 */ 0x00, 0x00, 0xff, 0x33, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x0f, 0x00, 0x4b, 0x00, 0x00, + /* c0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* d0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* e0 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + /* f0 */ 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }; + + printk(BIOS_DEBUG, "Replaying EC dump ..."); + for (i = 0; i < 256; i++) + ec_write (i, dmp[i]); + printk(BIOS_DEBUG, "done\n"); + } + pc_keyboard_init(NO_AUX_DEVICE); +} + +static void mainboard_enable(struct device *dev) +{ + dev->ops->init = mainboard_init; + + /* FIXME: fix those values*/ + install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_DEFAULT, GMA_INT15_BOOT_DISPLAY_DEFAULT, 0); +} + +struct chip_operations mainboard_ops = { + .enable_dev = mainboard_enable, +}; diff --git a/src/mainboard/samsung/350v5c/romstage.c b/src/mainboard/samsung/350v5c/romstage.c new file mode 100644 index 0000000..860b045 --- /dev/null +++ b/src/mainboard/samsung/350v5c/romstage.c @@ -0,0 +1,82 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * Copyright (C) 2014 Vladimir Serbinenko + * + * 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 <stdint.h> +#include <string.h> +#include <lib.h> +#include <timestamp.h> +#include <arch/byteorder.h> +#include <arch/io.h> +#include <device/pci_def.h> +#include <device/pnp_def.h> +#include <cpu/x86/lapic.h> +#include <arch/acpi.h> +#include <console/console.h> +#include "northbridge/intel/sandybridge/sandybridge.h" +#include "northbridge/intel/sandybridge/raminit_native.h" +#include "southbridge/intel/bd82x6x/pch.h" +#include <southbridge/intel/common/gpio.h> +#include <arch/cpu.h> +#include <cpu/x86/msr.h> + +void pch_enable_lpc(void) +{ + pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3c00); + pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00040069); + pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x0004fd61); + pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x00000000); + pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000000); + pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0000); +} + +void mainboard_rcba_config(void) +{ +} + +const struct southbridge_usb_port mainboard_usb_ports[] = { + { 1, 1, 0 }, + { 1, 1, 0 }, + { 1, 1, 1 }, + { 1, 1, 1 }, + { 0, 0, 2 }, + { 0, 0, 2 }, + { 0, 0, 3 }, + { 0, 0, 3 }, + { 1, 1, 4 }, + { 1, 1, 4 }, + { 0, 0, 5 }, + { 1, 0, 5 }, + { 0, 0, 6 }, + { 0, 0, 6 }, +}; + +void mainboard_early_init(int s3resume) +{ +} + +void mainboard_config_superio(void) +{ +} + +/* FIXME: Put proper SPD map here. */ +void mainboard_get_spd(spd_raw_data *spd, bool id_only) +{ + read_spd(&spd[0], 0x50, id_only); + read_spd(&spd[1], 0x51, id_only); + read_spd(&spd[2], 0x52, id_only); + read_spd(&spd[3], 0x53, id_only); +} -- To view, visit https://review.coreboot.org/c/coreboot/+/30942 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I64fcf931938fb3b158b9576b787f452bf6077843 Gerrit-Change-Number: 30942 Gerrit-PatchSet: 1 Gerrit-Owner: Kacper Słomiński <kacper.slominski72(a)gmail.com> Gerrit-MessageType: newchange

5 23

Change in ...coreboot[master]: libpayload: import libfdt from upstream
by Philipp Hug (Code Review) 07 Aug '23

07 Aug '23

Philipp Hug has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/31355 Change subject: libpayload: import libfdt from upstream ...................................................................... libpayload: import libfdt from upstream Import libfdt from dtc upstream. fdt is required for RISC-V. Change-Id: If48195e748f958d7076b1635a45182c447ea4aeb Signed-off-by: Philipp Hug <philipp(a)hug.cx> --- M payloads/libpayload/Kconfig M payloads/libpayload/Makefile.inc A payloads/libpayload/include/libfdt/fdt.h A payloads/libpayload/include/libfdt/libfdt.h A payloads/libpayload/include/libfdt/libfdt_env.h A payloads/libpayload/include/libfdt/libfdt_internal.h A payloads/libpayload/libfdt/Makefile.inc A payloads/libpayload/libfdt/fdt.c A payloads/libpayload/libfdt/fdt_addresses.c A payloads/libpayload/libfdt/fdt_empty_tree.c A payloads/libpayload/libfdt/fdt_overlay.c A payloads/libpayload/libfdt/fdt_ro.c A payloads/libpayload/libfdt/fdt_rw.c A payloads/libpayload/libfdt/fdt_strerror.c A payloads/libpayload/libfdt/fdt_sw.c A payloads/libpayload/libfdt/fdt_wip.c A payloads/libpayload/libfdt/version.lds 17 files changed, 5,889 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/31355/1 diff --git a/payloads/libpayload/Kconfig b/payloads/libpayload/Kconfig index a79269f..5bfbd54 100644 --- a/payloads/libpayload/Kconfig +++ b/payloads/libpayload/Kconfig @@ -204,6 +204,12 @@ help CBFS is the archive format of coreboot +config FDT + bool "FDT support" + default n + help + Flattened device tree support + config LZMA bool "LZMA decoder" default y diff --git a/payloads/libpayload/Makefile.inc b/payloads/libpayload/Makefile.inc index 7787762..052a3f0 100644 --- a/payloads/libpayload/Makefile.inc +++ b/payloads/libpayload/Makefile.inc @@ -44,6 +44,7 @@ classes-$(CONFIG_LP_CURSES) += libcurses classes-$(CONFIG_LP_PDCURSES) += libmenu libform libpanel classes-$(CONFIG_LP_CBFS) += libcbfs +classes-$(CONFIG_LP_FDT) += libfdt classes-$(CONFIG_LP_LZMA) += liblzma classes-$(CONFIG_LP_LZ4) += liblz4 classes-$(CONFIG_LP_REMOTEGDB) += libgdb @@ -54,6 +55,7 @@ subdirs-y += crypto libc drivers libpci gdb subdirs-$(CONFIG_LP_CURSES) += curses subdirs-$(CONFIG_LP_CBFS) += libcbfs +subdirs-$(CONFIG_LP_FDT) += libfdt subdirs-$(CONFIG_LP_LZMA) += liblzma subdirs-$(CONFIG_LP_LZ4) += liblz4 diff --git a/payloads/libpayload/include/libfdt/fdt.h b/payloads/libpayload/include/libfdt/fdt.h new file mode 100644 index 0000000..a351d49 --- /dev/null +++ b/payloads/libpayload/include/libfdt/fdt.h @@ -0,0 +1,111 @@ +#ifndef FDT_H +#define FDT_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * Copyright 2012 Kim Phillips, Freescale Semiconductor. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __ASSEMBLY__ + +struct fdt_header { + fdt32_t magic; /* magic word FDT_MAGIC */ + fdt32_t totalsize; /* total size of DT block */ + fdt32_t off_dt_struct; /* offset to structure */ + fdt32_t off_dt_strings; /* offset to strings */ + fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ + fdt32_t version; /* format version */ + fdt32_t last_comp_version; /* last compatible version */ + + /* version 2 fields below */ + fdt32_t boot_cpuid_phys; /* Which physical CPU id we're + booting on */ + /* version 3 fields below */ + fdt32_t size_dt_strings; /* size of the strings block */ + + /* version 17 fields below */ + fdt32_t size_dt_struct; /* size of the structure block */ +}; + +struct fdt_reserve_entry { + fdt64_t address; + fdt64_t size; +}; + +struct fdt_node_header { + fdt32_t tag; + char name[0]; +}; + +struct fdt_property { + fdt32_t tag; + fdt32_t len; + fdt32_t nameoff; + char data[0]; +}; + +#endif /* !__ASSEMBLY */ + +#define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ +#define FDT_TAGSIZE sizeof(fdt32_t) + +#define FDT_BEGIN_NODE 0x1 /* Start node: full name */ +#define FDT_END_NODE 0x2 /* End node */ +#define FDT_PROP 0x3 /* Property: name off, \ + size, content */ +#define FDT_NOP 0x4 /* nop */ +#define FDT_END 0x9 + +#define FDT_V1_SIZE (7 * sizeof(fdt32_t)) +#define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) +#define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) +#define FDT_V16_SIZE FDT_V3_SIZE +#define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) + +#endif /* FDT_H */ diff --git a/payloads/libpayload/include/libfdt/libfdt.h b/payloads/libpayload/include/libfdt/libfdt.h new file mode 100644 index 0000000..894bf53 --- /dev/null +++ b/payloads/libpayload/include/libfdt/libfdt.h @@ -0,0 +1,1968 @@ +#ifndef LIBFDT_H +#define LIBFDT_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <libfdt_env.h> +#include <fdt.h> + +#define FDT_FIRST_SUPPORTED_VERSION 0x02 +#define FDT_LAST_SUPPORTED_VERSION 0x11 + +/* Error codes: informative error codes */ +#define FDT_ERR_NOTFOUND 1 +/* FDT_ERR_NOTFOUND: The requested node or property does not exist */ +#define FDT_ERR_EXISTS 2 +/* FDT_ERR_EXISTS: Attempted to create a node or property which + * already exists */ +#define FDT_ERR_NOSPACE 3 +/* FDT_ERR_NOSPACE: Operation needed to expand the device + * tree, but its buffer did not have sufficient space to + * contain the expanded tree. Use fdt_open_into() to move the + * device tree to a buffer with more space. */ + +/* Error codes: codes for bad parameters */ +#define FDT_ERR_BADOFFSET 4 +/* FDT_ERR_BADOFFSET: Function was passed a structure block + * offset which is out-of-bounds, or which points to an + * unsuitable part of the structure for the operation. */ +#define FDT_ERR_BADPATH 5 +/* FDT_ERR_BADPATH: Function was passed a badly formatted path + * (e.g. missing a leading / for a function which requires an + * absolute path) */ +#define FDT_ERR_BADPHANDLE 6 +/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle. + * This can be caused either by an invalid phandle property + * length, or the phandle value was either 0 or -1, which are + * not permitted. */ +#define FDT_ERR_BADSTATE 7 +/* FDT_ERR_BADSTATE: Function was passed an incomplete device + * tree created by the sequential-write functions, which is + * not sufficiently complete for the requested operation. */ + +/* Error codes: codes for bad device tree blobs */ +#define FDT_ERR_TRUNCATED 8 +/* FDT_ERR_TRUNCATED: FDT or a sub-block is improperly + * terminated (overflows, goes outside allowed bounds, or + * isn't properly terminated). */ +#define FDT_ERR_BADMAGIC 9 +/* FDT_ERR_BADMAGIC: Given "device tree" appears not to be a + * device tree at all - it is missing the flattened device + * tree magic number. */ +#define FDT_ERR_BADVERSION 10 +/* FDT_ERR_BADVERSION: Given device tree has a version which + * can't be handled by the requested operation. For + * read-write functions, this may mean that fdt_open_into() is + * required to convert the tree to the expected version. */ +#define FDT_ERR_BADSTRUCTURE 11 +/* FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt + * structure block or other serious error (e.g. misnested + * nodes, or subnodes preceding properties). */ +#define FDT_ERR_BADLAYOUT 12 +/* FDT_ERR_BADLAYOUT: For read-write functions, the given + * device tree has it's sub-blocks in an order that the + * function can't handle (memory reserve map, then structure, + * then strings). Use fdt_open_into() to reorganize the tree + * into a form suitable for the read-write operations. */ + +/* "Can't happen" error indicating a bug in libfdt */ +#define FDT_ERR_INTERNAL 13 +/* FDT_ERR_INTERNAL: libfdt has failed an internal assertion. + * Should never be returned, if it is, it indicates a bug in + * libfdt itself. */ + +/* Errors in device tree content */ +#define FDT_ERR_BADNCELLS 14 +/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells + * or similar property with a bad format or value */ + +#define FDT_ERR_BADVALUE 15 +/* FDT_ERR_BADVALUE: Device tree has a property with an unexpected + * value. For example: a property expected to contain a string list + * is not NUL-terminated within the length of its value. */ + +#define FDT_ERR_BADOVERLAY 16 +/* FDT_ERR_BADOVERLAY: The device tree overlay, while + * correctly structured, cannot be applied due to some + * unexpected or missing value, property or node. */ + +#define FDT_ERR_NOPHANDLES 17 +/* FDT_ERR_NOPHANDLES: The device tree doesn't have any + * phandle available anymore without causing an overflow */ + +#define FDT_ERR_MAX 17 + +/**********************************************************************/ +/* Low-level functions (you probably don't need these) */ +/**********************************************************************/ + +#ifndef SWIG /* This function is not useful in Python */ +const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen); +#endif +static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen) +{ + return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen); +} + +uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset); + +/* + * Alignment helpers: + * These helpers access words from a device tree blob. They're + * built to work even with unaligned pointers on platforms (ike + * ARM) that don't like unaligned loads and stores + */ + +static inline uint32_t fdt32_ld(const fdt32_t *p) +{ + const uint8_t *bp = (const uint8_t *)p; + + return ((uint32_t)bp[0] << 24) + | ((uint32_t)bp[1] << 16) + | ((uint32_t)bp[2] << 8) + | bp[3]; +} + +static inline uint64_t fdt64_ld(const fdt64_t *p) +{ + const uint8_t *bp = (const uint8_t *)p; + + return ((uint64_t)bp[0] << 56) + | ((uint64_t)bp[1] << 48) + | ((uint64_t)bp[2] << 40) + | ((uint64_t)bp[3] << 32) + | ((uint64_t)bp[4] << 24) + | ((uint64_t)bp[5] << 16) + | ((uint64_t)bp[6] << 8) + | bp[7]; +} + +/**********************************************************************/ +/* Traversal functions */ +/**********************************************************************/ + +int fdt_next_node(const void *fdt, int offset, int *depth); + +/** + * fdt_first_subnode() - get offset of first direct subnode + * + * @fdt: FDT blob + * @offset: Offset of node to check + * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none + */ +int fdt_first_subnode(const void *fdt, int offset); + +/** + * fdt_next_subnode() - get offset of next direct subnode + * + * After first calling fdt_first_subnode(), call this function repeatedly to + * get direct subnodes of a parent node. + * + * @fdt: FDT blob + * @offset: Offset of previous subnode + * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more + * subnodes + */ +int fdt_next_subnode(const void *fdt, int offset); + +/** + * fdt_for_each_subnode - iterate over all subnodes of a parent + * + * @node: child node (int, lvalue) + * @fdt: FDT blob (const void *) + * @parent: parent node (int) + * + * This is actually a wrapper around a for loop and would be used like so: + * + * fdt_for_each_subnode(node, fdt, parent) { + * Use node + * ... + * } + * + * if ((node < 0) && (node != -FDT_ERR_NOTFOUND)) { + * Error handling + * } + * + * Note that this is implemented as a macro and @node is used as + * iterator in the loop. The parent variable be constant or even a + * literal. + * + */ +#define fdt_for_each_subnode(node, fdt, parent) \ + for (node = fdt_first_subnode(fdt, parent); \ + node >= 0; \ + node = fdt_next_subnode(fdt, node)) + +/**********************************************************************/ +/* General functions */ +/**********************************************************************/ +#define fdt_get_header(fdt, field) \ + (fdt32_ld(&((const struct fdt_header *)(fdt))->field)) +#define fdt_magic(fdt) (fdt_get_header(fdt, magic)) +#define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize)) +#define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct)) +#define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings)) +#define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap)) +#define fdt_version(fdt) (fdt_get_header(fdt, version)) +#define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version)) +#define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys)) +#define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings)) +#define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct)) + +#define fdt_set_hdr_(name) \ + static inline void fdt_set_##name(void *fdt, uint32_t val) \ + { \ + struct fdt_header *fdth = (struct fdt_header *)fdt; \ + fdth->name = cpu_to_fdt32(val); \ + } +fdt_set_hdr_(magic); +fdt_set_hdr_(totalsize); +fdt_set_hdr_(off_dt_struct); +fdt_set_hdr_(off_dt_strings); +fdt_set_hdr_(off_mem_rsvmap); +fdt_set_hdr_(version); +fdt_set_hdr_(last_comp_version); +fdt_set_hdr_(boot_cpuid_phys); +fdt_set_hdr_(size_dt_strings); +fdt_set_hdr_(size_dt_struct); +#undef fdt_set_hdr_ + +/** + * fdt_header_size - return the size of the tree's header + * @fdt: pointer to a flattened device tree + */ +size_t fdt_header_size_(uint32_t version); +static inline size_t fdt_header_size(const void *fdt) +{ + return fdt_header_size_(fdt_version(fdt)); +} + +/** + * fdt_check_header - sanity check a device tree header + + * @fdt: pointer to data which might be a flattened device tree + * + * fdt_check_header() checks that the given buffer contains what + * appears to be a flattened device tree, and that the header contains + * valid information (to the extent that can be determined from the + * header alone). + * + * returns: + * 0, if the buffer appears to contain a valid device tree + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_TRUNCATED, standard meanings, as above + */ +int fdt_check_header(const void *fdt); + +/** + * fdt_move - move a device tree around in memory + * @fdt: pointer to the device tree to move + * @buf: pointer to memory where the device is to be moved + * @bufsize: size of the memory space at buf + * + * fdt_move() relocates, if possible, the device tree blob located at + * fdt to the buffer at buf of size bufsize. The buffer may overlap + * with the existing device tree blob at fdt. Therefore, + * fdt_move(fdt, fdt, fdt_totalsize(fdt)) + * should always succeed. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, bufsize is insufficient to contain the device tree + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, standard meanings + */ +int fdt_move(const void *fdt, void *buf, int bufsize); + +/**********************************************************************/ +/* Read-only functions */ +/**********************************************************************/ + +int fdt_check_full(const void *fdt, size_t bufsize); + +/** + * fdt_get_string - retrieve a string from the strings block of a device tree + * @fdt: pointer to the device tree blob + * @stroffset: offset of the string within the strings block (native endian) + * @lenp: optional pointer to return the string's length + * + * fdt_get_string() retrieves a pointer to a single string from the + * strings block of the device tree blob at fdt, and optionally also + * returns the string's length in *lenp. + * + * returns: + * a pointer to the string, on success + * NULL, if stroffset is out of bounds, or doesn't point to a valid string + */ +const char *fdt_get_string(const void *fdt, int stroffset, int *lenp); + +/** + * fdt_string - retrieve a string from the strings block of a device tree + * @fdt: pointer to the device tree blob + * @stroffset: offset of the string within the strings block (native endian) + * + * fdt_string() retrieves a pointer to a single string from the + * strings block of the device tree blob at fdt. + * + * returns: + * a pointer to the string, on success + * NULL, if stroffset is out of bounds, or doesn't point to a valid string + */ +const char *fdt_string(const void *fdt, int stroffset); + +/** + * fdt_get_max_phandle - retrieves the highest phandle in a tree + * @fdt: pointer to the device tree blob + * + * fdt_get_max_phandle retrieves the highest phandle in the given + * device tree. This will ignore badly formatted phandles, or phandles + * with a value of 0 or -1. + * + * returns: + * the highest phandle on success + * 0, if no phandle was found in the device tree + * -1, if an error occurred + */ +uint32_t fdt_get_max_phandle(const void *fdt); + +/** + * fdt_num_mem_rsv - retrieve the number of memory reserve map entries + * @fdt: pointer to the device tree blob + * + * Returns the number of entries in the device tree blob's memory + * reservation map. This does not include the terminating 0,0 entry + * or any other (0,0) entries reserved for expansion. + * + * returns: + * the number of entries + */ +int fdt_num_mem_rsv(const void *fdt); + +/** + * fdt_get_mem_rsv - retrieve one memory reserve map entry + * @fdt: pointer to the device tree blob + * @address, @size: pointers to 64-bit variables + * + * On success, *address and *size will contain the address and size of + * the n-th reserve map entry from the device tree blob, in + * native-endian format. + * + * returns: + * 0, on success + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, standard meanings + */ +int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size); + +/** + * fdt_subnode_offset_namelen - find a subnode based on substring + * @fdt: pointer to the device tree blob + * @parentoffset: structure block offset of a node + * @name: name of the subnode to locate + * @namelen: number of characters of name to consider + * + * Identical to fdt_subnode_offset(), but only examine the first + * namelen characters of name for matching the subnode name. This is + * useful for finding subnodes based on a portion of a larger string, + * such as a full path. + */ +#ifndef SWIG /* Not available in Python */ +int fdt_subnode_offset_namelen(const void *fdt, int parentoffset, + const char *name, int namelen); +#endif +/** + * fdt_subnode_offset - find a subnode of a given node + * @fdt: pointer to the device tree blob + * @parentoffset: structure block offset of a node + * @name: name of the subnode to locate + * + * fdt_subnode_offset() finds a subnode of the node at structure block + * offset parentoffset with the given name. name may include a unit + * address, in which case fdt_subnode_offset() will find the subnode + * with that unit address, or the unit address may be omitted, in + * which case fdt_subnode_offset() will find an arbitrary subnode + * whose name excluding unit address matches the given name. + * + * returns: + * structure block offset of the requested subnode (>=0), on success + * -FDT_ERR_NOTFOUND, if the requested subnode does not exist + * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE + * tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings. + */ +int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name); + +/** + * fdt_path_offset_namelen - find a tree node by its full path + * @fdt: pointer to the device tree blob + * @path: full path of the node to locate + * @namelen: number of characters of path to consider + * + * Identical to fdt_path_offset(), but only consider the first namelen + * characters of path as the path name. + */ +#ifndef SWIG /* Not available in Python */ +int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen); +#endif + +/** + * fdt_path_offset - find a tree node by its full path + * @fdt: pointer to the device tree blob + * @path: full path of the node to locate + * + * fdt_path_offset() finds a node of a given path in the device tree. + * Each path component may omit the unit address portion, but the + * results of this are undefined if any such path component is + * ambiguous (that is if there are multiple nodes at the relevant + * level matching the given component, differentiated only by unit + * address). + * + * returns: + * structure block offset of the node with the requested path (>=0), on + * success + * -FDT_ERR_BADPATH, given path does not begin with '/' or is invalid + * -FDT_ERR_NOTFOUND, if the requested node does not exist + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings. + */ +int fdt_path_offset(const void *fdt, const char *path); + +/** + * fdt_get_name - retrieve the name of a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: structure block offset of the starting node + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_get_name() retrieves the name (including unit address) of the + * device tree node at structure block offset nodeoffset. If lenp is + * non-NULL, the length of this name is also returned, in the integer + * pointed to by lenp. + * + * returns: + * pointer to the node's name, on success + * If lenp is non-NULL, *lenp contains the length of that name + * (>=0) + * NULL, on error + * if lenp is non-NULL *lenp contains an error code (<0): + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE + * tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, standard meanings + */ +const char *fdt_get_name(const void *fdt, int nodeoffset, int *lenp); + +/** + * fdt_first_property_offset - find the offset of a node's first property + * @fdt: pointer to the device tree blob + * @nodeoffset: structure block offset of a node + * + * fdt_first_property_offset() finds the first property of the node at + * the given structure block offset. + * + * returns: + * structure block offset of the property (>=0), on success + * -FDT_ERR_NOTFOUND, if the requested node has no properties + * -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings. + */ +int fdt_first_property_offset(const void *fdt, int nodeoffset); + +/** + * fdt_next_property_offset - step through a node's properties + * @fdt: pointer to the device tree blob + * @offset: structure block offset of a property + * + * fdt_next_property_offset() finds the property immediately after the + * one at the given structure block offset. This will be a property + * of the same node as the given property. + * + * returns: + * structure block offset of the next property (>=0), on success + * -FDT_ERR_NOTFOUND, if the given property is the last in its node + * -FDT_ERR_BADOFFSET, if nodeoffset did not point to an FDT_PROP tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings. + */ +int fdt_next_property_offset(const void *fdt, int offset); + +/** + * fdt_for_each_property_offset - iterate over all properties of a node + * + * @property_offset: property offset (int, lvalue) + * @fdt: FDT blob (const void *) + * @node: node offset (int) + * + * This is actually a wrapper around a for loop and would be used like so: + * + * fdt_for_each_property_offset(property, fdt, node) { + * Use property + * ... + * } + * + * if ((property < 0) && (property != -FDT_ERR_NOTFOUND)) { + * Error handling + * } + * + * Note that this is implemented as a macro and property is used as + * iterator in the loop. The node variable can be constant or even a + * literal. + */ +#define fdt_for_each_property_offset(property, fdt, node) \ + for (property = fdt_first_property_offset(fdt, node); \ + property >= 0; \ + property = fdt_next_property_offset(fdt, property)) + +/** + * fdt_get_property_by_offset - retrieve the property at a given offset + * @fdt: pointer to the device tree blob + * @offset: offset of the property to retrieve + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_get_property_by_offset() retrieves a pointer to the + * fdt_property structure within the device tree blob at the given + * offset. If lenp is non-NULL, the length of the property value is + * also returned, in the integer pointed to by lenp. + * + * Note that this code only works on device tree versions >= 16. fdt_getprop() + * works on all versions. + * + * returns: + * pointer to the structure representing the property + * if lenp is non-NULL, *lenp contains the length of the property + * value (>=0) + * NULL, on error + * if lenp is non-NULL, *lenp contains an error code (<0): + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +const struct fdt_property *fdt_get_property_by_offset(const void *fdt, + int offset, + int *lenp); + +/** + * fdt_get_property_namelen - find a property based on substring + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to find + * @name: name of the property to find + * @namelen: number of characters of name to consider + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * Identical to fdt_get_property(), but only examine the first namelen + * characters of name for matching the property name. + */ +#ifndef SWIG /* Not available in Python */ +const struct fdt_property *fdt_get_property_namelen(const void *fdt, + int nodeoffset, + const char *name, + int namelen, int *lenp); +#endif + +/** + * fdt_get_property - find a given property in a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to find + * @name: name of the property to find + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_get_property() retrieves a pointer to the fdt_property + * structure within the device tree blob corresponding to the property + * named 'name' of the node at offset nodeoffset. If lenp is + * non-NULL, the length of the property value is also returned, in the + * integer pointed to by lenp. + * + * returns: + * pointer to the structure representing the property + * if lenp is non-NULL, *lenp contains the length of the property + * value (>=0) + * NULL, on error + * if lenp is non-NULL, *lenp contains an error code (<0): + * -FDT_ERR_NOTFOUND, node does not have named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE + * tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +const struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset, + const char *name, int *lenp); +static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset, + const char *name, + int *lenp) +{ + return (struct fdt_property *)(uintptr_t) + fdt_get_property(fdt, nodeoffset, name, lenp); +} + +/** + * fdt_getprop_by_offset - retrieve the value of a property at a given offset + * @fdt: pointer to the device tree blob + * @offset: offset of the property to read + * @namep: pointer to a string variable (will be overwritten) or NULL + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_getprop_by_offset() retrieves a pointer to the value of the + * property at structure block offset 'offset' (this will be a pointer + * to within the device blob itself, not a copy of the value). If + * lenp is non-NULL, the length of the property value is also + * returned, in the integer pointed to by lenp. If namep is non-NULL, + * the property's namne will also be returned in the char * pointed to + * by namep (this will be a pointer to within the device tree's string + * block, not a new copy of the name). + * + * returns: + * pointer to the property's value + * if lenp is non-NULL, *lenp contains the length of the property + * value (>=0) + * if namep is non-NULL *namep contiains a pointer to the property + * name. + * NULL, on error + * if lenp is non-NULL, *lenp contains an error code (<0): + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_PROP tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +#ifndef SWIG /* This function is not useful in Python */ +const void *fdt_getprop_by_offset(const void *fdt, int offset, + const char **namep, int *lenp); +#endif + +/** + * fdt_getprop_namelen - get property value based on substring + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to find + * @name: name of the property to find + * @namelen: number of characters of name to consider + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * Identical to fdt_getprop(), but only examine the first namelen + * characters of name for matching the property name. + */ +#ifndef SWIG /* Not available in Python */ +const void *fdt_getprop_namelen(const void *fdt, int nodeoffset, + const char *name, int namelen, int *lenp); +static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset, + const char *name, int namelen, + int *lenp) +{ + return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name, + namelen, lenp); +} +#endif + +/** + * fdt_getprop - retrieve the value of a given property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to find + * @name: name of the property to find + * @lenp: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_getprop() retrieves a pointer to the value of the property + * named 'name' of the node at offset nodeoffset (this will be a + * pointer to within the device blob itself, not a copy of the value). + * If lenp is non-NULL, the length of the property value is also + * returned, in the integer pointed to by lenp. + * + * returns: + * pointer to the property's value + * if lenp is non-NULL, *lenp contains the length of the property + * value (>=0) + * NULL, on error + * if lenp is non-NULL, *lenp contains an error code (<0): + * -FDT_ERR_NOTFOUND, node does not have named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE + * tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +const void *fdt_getprop(const void *fdt, int nodeoffset, + const char *name, int *lenp); +static inline void *fdt_getprop_w(void *fdt, int nodeoffset, + const char *name, int *lenp) +{ + return (void *)(uintptr_t)fdt_getprop(fdt, nodeoffset, name, lenp); +} + +/** + * fdt_get_phandle - retrieve the phandle of a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: structure block offset of the node + * + * fdt_get_phandle() retrieves the phandle of the device tree node at + * structure block offset nodeoffset. + * + * returns: + * the phandle of the node at nodeoffset, on success (!= 0, != -1) + * 0, if the node has no phandle, or another error occurs + */ +uint32_t fdt_get_phandle(const void *fdt, int nodeoffset); + +/** + * fdt_get_alias_namelen - get alias based on substring + * @fdt: pointer to the device tree blob + * @name: name of the alias th look up + * @namelen: number of characters of name to consider + * + * Identical to fdt_get_alias(), but only examine the first namelen + * characters of name for matching the alias name. + */ +#ifndef SWIG /* Not available in Python */ +const char *fdt_get_alias_namelen(const void *fdt, + const char *name, int namelen); +#endif + +/** + * fdt_get_alias - retrieve the path referenced by a given alias + * @fdt: pointer to the device tree blob + * @name: name of the alias th look up + * + * fdt_get_alias() retrieves the value of a given alias. That is, the + * value of the property named 'name' in the node /aliases. + * + * returns: + * a pointer to the expansion of the alias named 'name', if it exists + * NULL, if the given alias or the /aliases node does not exist + */ +const char *fdt_get_alias(const void *fdt, const char *name); + +/** + * fdt_get_path - determine the full path of a node + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose path to find + * @buf: character buffer to contain the returned path (will be overwritten) + * @buflen: size of the character buffer at buf + * + * fdt_get_path() computes the full path of the node at offset + * nodeoffset, and records that path in the buffer at buf. + * + * NOTE: This function is expensive, as it must scan the device tree + * structure from the start to nodeoffset. + * + * returns: + * 0, on success + * buf contains the absolute path of the node at + * nodeoffset, as a NUL-terminated string. + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1) + * characters and will not fit in the given buffer. + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen); + +/** + * fdt_supernode_atdepth_offset - find a specific ancestor of a node + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose parent to find + * @supernodedepth: depth of the ancestor to find + * @nodedepth: pointer to an integer variable (will be overwritten) or NULL + * + * fdt_supernode_atdepth_offset() finds an ancestor of the given node + * at a specific depth from the root (where the root itself has depth + * 0, its immediate subnodes depth 1 and so forth). So + * fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, NULL); + * will always return 0, the offset of the root node. If the node at + * nodeoffset has depth D, then: + * fdt_supernode_atdepth_offset(fdt, nodeoffset, D, NULL); + * will return nodeoffset itself. + * + * NOTE: This function is expensive, as it must scan the device tree + * structure from the start to nodeoffset. + * + * returns: + * structure block offset of the node at node offset's ancestor + * of depth supernodedepth (>=0), on success + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of + * nodeoffset + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset, + int supernodedepth, int *nodedepth); + +/** + * fdt_node_depth - find the depth of a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose parent to find + * + * fdt_node_depth() finds the depth of a given node. The root node + * has depth 0, its immediate subnodes depth 1 and so forth. + * + * NOTE: This function is expensive, as it must scan the device tree + * structure from the start to nodeoffset. + * + * returns: + * depth of the node at nodeoffset (>=0), on success + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_node_depth(const void *fdt, int nodeoffset); + +/** + * fdt_parent_offset - find the parent of a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose parent to find + * + * fdt_parent_offset() locates the parent node of a given node (that + * is, it finds the offset of the node which contains the node at + * nodeoffset as a subnode). + * + * NOTE: This function is expensive, as it must scan the device tree + * structure from the start to nodeoffset, *twice*. + * + * returns: + * structure block offset of the parent of the node at nodeoffset + * (>=0), on success + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_parent_offset(const void *fdt, int nodeoffset); + +/** + * fdt_node_offset_by_prop_value - find nodes with a given property value + * @fdt: pointer to the device tree blob + * @startoffset: only find nodes after this offset + * @propname: property name to check + * @propval: property value to search for + * @proplen: length of the value in propval + * + * fdt_node_offset_by_prop_value() returns the offset of the first + * node after startoffset, which has a property named propname whose + * value is of length proplen and has value equal to propval; or if + * startoffset is -1, the very first such node in the tree. + * + * To iterate through all nodes matching the criterion, the following + * idiom can be used: + * offset = fdt_node_offset_by_prop_value(fdt, -1, propname, + * propval, proplen); + * while (offset != -FDT_ERR_NOTFOUND) { + * // other code here + * offset = fdt_node_offset_by_prop_value(fdt, offset, propname, + * propval, proplen); + * } + * + * Note the -1 in the first call to the function, if 0 is used here + * instead, the function will never locate the root node, even if it + * matches the criterion. + * + * returns: + * structure block offset of the located node (>= 0, >startoffset), + * on success + * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the + * tree after startoffset + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_node_offset_by_prop_value(const void *fdt, int startoffset, + const char *propname, + const void *propval, int proplen); + +/** + * fdt_node_offset_by_phandle - find the node with a given phandle + * @fdt: pointer to the device tree blob + * @phandle: phandle value + * + * fdt_node_offset_by_phandle() returns the offset of the node + * which has the given phandle value. If there is more than one node + * in the tree with the given phandle (an invalid tree), results are + * undefined. + * + * returns: + * structure block offset of the located node (>= 0), on success + * -FDT_ERR_NOTFOUND, no node with that phandle exists + * -FDT_ERR_BADPHANDLE, given phandle value was invalid (0 or -1) + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle); + +/** + * fdt_node_check_compatible: check a node's compatible property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of a tree node + * @compatible: string to match against + * + * + * fdt_node_check_compatible() returns 0 if the given node contains a + * 'compatible' property with the given string as one of its elements, + * it returns non-zero otherwise, or on error. + * + * returns: + * 0, if the node has a 'compatible' property listing the given string + * 1, if the node has a 'compatible' property, but it does not list + * the given string + * -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property + * -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_node_check_compatible(const void *fdt, int nodeoffset, + const char *compatible); + +/** + * fdt_node_offset_by_compatible - find nodes with a given 'compatible' value + * @fdt: pointer to the device tree blob + * @startoffset: only find nodes after this offset + * @compatible: 'compatible' string to match against + * + * fdt_node_offset_by_compatible() returns the offset of the first + * node after startoffset, which has a 'compatible' property which + * lists the given compatible string; or if startoffset is -1, the + * very first such node in the tree. + * + * To iterate through all nodes matching the criterion, the following + * idiom can be used: + * offset = fdt_node_offset_by_compatible(fdt, -1, compatible); + * while (offset != -FDT_ERR_NOTFOUND) { + * // other code here + * offset = fdt_node_offset_by_compatible(fdt, offset, compatible); + * } + * + * Note the -1 in the first call to the function, if 0 is used here + * instead, the function will never locate the root node, even if it + * matches the criterion. + * + * returns: + * structure block offset of the located node (>= 0, >startoffset), + * on success + * -FDT_ERR_NOTFOUND, no node matching the criterion exists in the + * tree after startoffset + * -FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, standard meanings + */ +int fdt_node_offset_by_compatible(const void *fdt, int startoffset, + const char *compatible); + +/** + * fdt_stringlist_contains - check a string list property for a string + * @strlist: Property containing a list of strings to check + * @listlen: Length of property + * @str: String to search for + * + * This is a utility function provided for convenience. The list contains + * one or more strings, each terminated by \0, as is found in a device tree + * "compatible" property. + * + * @return: 1 if the string is found in the list, 0 not found, or invalid list + */ +int fdt_stringlist_contains(const char *strlist, int listlen, const char *str); + +/** + * fdt_stringlist_count - count the number of strings in a string list + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of a tree node + * @property: name of the property containing the string list + * @return: + * the number of strings in the given property + * -FDT_ERR_BADVALUE if the property value is not NUL-terminated + * -FDT_ERR_NOTFOUND if the property does not exist + */ +int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property); + +/** + * fdt_stringlist_search - find a string in a string list and return its index + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of a tree node + * @property: name of the property containing the string list + * @string: string to look up in the string list + * + * Note that it is possible for this function to succeed on property values + * that are not NUL-terminated. That's because the function will stop after + * finding the first occurrence of @string. This can for example happen with + * small-valued cell properties, such as #address-cells, when searching for + * the empty string. + * + * @return: + * the index of the string in the list of strings + * -FDT_ERR_BADVALUE if the property value is not NUL-terminated + * -FDT_ERR_NOTFOUND if the property does not exist or does not contain + * the given string + */ +int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property, + const char *string); + +/** + * fdt_stringlist_get() - obtain the string at a given index in a string list + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of a tree node + * @property: name of the property containing the string list + * @index: index of the string to return + * @lenp: return location for the string length or an error code on failure + * + * Note that this will successfully extract strings from properties with + * non-NUL-terminated values. For example on small-valued cell properties + * this function will return the empty string. + * + * If non-NULL, the length of the string (on success) or a negative error-code + * (on failure) will be stored in the integer pointer to by lenp. + * + * @return: + * A pointer to the string at the given index in the string list or NULL on + * failure. On success the length of the string will be stored in the memory + * location pointed to by the lenp parameter, if non-NULL. On failure one of + * the following negative error codes will be returned in the lenp parameter + * (if non-NULL): + * -FDT_ERR_BADVALUE if the property value is not NUL-terminated + * -FDT_ERR_NOTFOUND if the property does not exist + */ +const char *fdt_stringlist_get(const void *fdt, int nodeoffset, + const char *property, int index, + int *lenp); + +/**********************************************************************/ +/* Read-only functions (addressing related) */ +/**********************************************************************/ + +/** + * FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells + * + * This is the maximum value for #address-cells, #size-cells and + * similar properties that will be processed by libfdt. IEE1275 + * requires that OF implementations handle values up to 4. + * Implementations may support larger values, but in practice higher + * values aren't used. + */ +#define FDT_MAX_NCELLS 4 + +/** + * fdt_address_cells - retrieve address size for a bus represented in the tree + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node to find the address size for + * + * When the node has a valid #address-cells property, returns its value. + * + * returns: + * 0 <= n < FDT_MAX_NCELLS, on success + * 2, if the node has no #address-cells property + * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid + * #address-cells property + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_address_cells(const void *fdt, int nodeoffset); + +/** + * fdt_size_cells - retrieve address range size for a bus represented in the + * tree + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node to find the address range size for + * + * When the node has a valid #size-cells property, returns its value. + * + * returns: + * 0 <= n < FDT_MAX_NCELLS, on success + * 1, if the node has no #size-cells property + * -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid + * #size-cells property + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_size_cells(const void *fdt, int nodeoffset); + + +/**********************************************************************/ +/* Write-in-place functions */ +/**********************************************************************/ + +/** + * fdt_setprop_inplace_namelen_partial - change a property's value, + * but not its size + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @namelen: number of characters of name to consider + * @idx: index of the property to change in the array + * @val: pointer to data to replace the property value with + * @len: length of the property value + * + * Identical to fdt_setprop_inplace(), but modifies the given property + * starting from the given index, and using only the first characters + * of the name. It is useful when you want to manipulate only one value of + * an array and you have a string that doesn't end with \0. + */ +#ifndef SWIG /* Not available in Python */ +int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset, + const char *name, int namelen, + uint32_t idx, const void *val, + int len); +#endif + +/** + * fdt_setprop_inplace - change a property's value, but not its size + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: pointer to data to replace the property value with + * @len: length of the property value + * + * fdt_setprop_inplace() replaces the value of a given property with + * the data in val, of length len. This function cannot change the + * size of a property, and so will only work if len is equal to the + * current length of the property. + * + * This function will alter only the bytes in the blob which contain + * the given property value, and will not alter or move any other part + * of the tree. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, if len is not equal to the property's current length + * -FDT_ERR_NOTFOUND, node does not have the named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +#ifndef SWIG /* Not available in Python */ +int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, + const void *val, int len); +#endif + +/** + * fdt_setprop_inplace_u32 - change the value of a 32-bit integer property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 32-bit integer value to replace the property with + * + * fdt_setprop_inplace_u32() replaces the value of a given property + * with the 32-bit integer value in val, converting val to big-endian + * if necessary. This function cannot change the size of a property, + * and so will only work if the property already exists and has length + * 4. + * + * This function will alter only the bytes in the blob which contain + * the given property value, and will not alter or move any other part + * of the tree. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, if the property's length is not equal to 4 + * -FDT_ERR_NOTFOUND, node does not have the named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset, + const char *name, uint32_t val) +{ + fdt32_t tmp = cpu_to_fdt32(val); + return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_setprop_inplace_u64 - change the value of a 64-bit integer property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 64-bit integer value to replace the property with + * + * fdt_setprop_inplace_u64() replaces the value of a given property + * with the 64-bit integer value in val, converting val to big-endian + * if necessary. This function cannot change the size of a property, + * and so will only work if the property already exists and has length + * 8. + * + * This function will alter only the bytes in the blob which contain + * the given property value, and will not alter or move any other part + * of the tree. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, if the property's length is not equal to 8 + * -FDT_ERR_NOTFOUND, node does not have the named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset, + const char *name, uint64_t val) +{ + fdt64_t tmp = cpu_to_fdt64(val); + return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_setprop_inplace_cell - change the value of a single-cell property + * + * This is an alternative name for fdt_setprop_inplace_u32() + */ +static inline int fdt_setprop_inplace_cell(void *fdt, int nodeoffset, + const char *name, uint32_t val) +{ + return fdt_setprop_inplace_u32(fdt, nodeoffset, name, val); +} + +/** + * fdt_nop_property - replace a property with nop tags + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to nop + * @name: name of the property to nop + * + * fdt_nop_property() will replace a given property's representation + * in the blob with FDT_NOP tags, effectively removing it from the + * tree. + * + * This function will alter only the bytes in the blob which contain + * the property, and will not alter or move any other part of the + * tree. + * + * returns: + * 0, on success + * -FDT_ERR_NOTFOUND, node does not have the named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_nop_property(void *fdt, int nodeoffset, const char *name); + +/** + * fdt_nop_node - replace a node (subtree) with nop tags + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node to nop + * + * fdt_nop_node() will replace a given node's representation in the + * blob, including all its subnodes, if any, with FDT_NOP tags, + * effectively removing it from the tree. + * + * This function will alter only the bytes in the blob which contain + * the node and its properties and subnodes, and will not alter or + * move any other part of the tree. + * + * returns: + * 0, on success + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_nop_node(void *fdt, int nodeoffset); + +/**********************************************************************/ +/* Sequential write functions */ +/**********************************************************************/ + +int fdt_create(void *buf, int bufsize); +int fdt_resize(void *fdt, void *buf, int bufsize); +int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size); +int fdt_finish_reservemap(void *fdt); +int fdt_begin_node(void *fdt, const char *name); +int fdt_property(void *fdt, const char *name, const void *val, int len); +static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val) +{ + fdt32_t tmp = cpu_to_fdt32(val); + return fdt_property(fdt, name, &tmp, sizeof(tmp)); +} +static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val) +{ + fdt64_t tmp = cpu_to_fdt64(val); + return fdt_property(fdt, name, &tmp, sizeof(tmp)); +} + +#ifndef SWIG /* Not available in Python */ +static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val) +{ + return fdt_property_u32(fdt, name, val); +} +#endif + +/** + * fdt_property_placeholder - add a new property and return a ptr to its value + * + * @fdt: pointer to the device tree blob + * @name: name of property to add + * @len: length of property value in bytes + * @valp: returns a pointer to where where the value should be placed + * + * returns: + * 0, on success + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_NOSPACE, standard meanings + */ +int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp); + +#define fdt_property_string(fdt, name, str) \ + fdt_property(fdt, name, str, strlen(str) + 1) +int fdt_end_node(void *fdt); +int fdt_finish(void *fdt); + +/**********************************************************************/ +/* Read-write functions */ +/**********************************************************************/ + +int fdt_create_empty_tree(void *buf, int bufsize); +int fdt_open_into(const void *fdt, void *buf, int bufsize); +int fdt_pack(void *fdt); + +/** + * fdt_add_mem_rsv - add one memory reserve map entry + * @fdt: pointer to the device tree blob + * @address, @size: 64-bit values (native endian) + * + * Adds a reserve map entry to the given blob reserving a region at + * address address of length size. + * + * This function will insert data into the reserve map and will + * therefore change the indexes of some entries in the table. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new reservation entry + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size); + +/** + * fdt_del_mem_rsv - remove a memory reserve map entry + * @fdt: pointer to the device tree blob + * @n: entry to remove + * + * fdt_del_mem_rsv() removes the n-th memory reserve map entry from + * the blob. + * + * This function will delete data from the reservation table and will + * therefore change the indexes of some entries in the table. + * + * returns: + * 0, on success + * -FDT_ERR_NOTFOUND, there is no entry of the given index (i.e. there + * are less than n+1 reserve map entries) + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_del_mem_rsv(void *fdt, int n); + +/** + * fdt_set_name - change the name of a given node + * @fdt: pointer to the device tree blob + * @nodeoffset: structure block offset of a node + * @name: name to give the node + * + * fdt_set_name() replaces the name (including unit address, if any) + * of the given node with the given string. NOTE: this function can't + * efficiently check if the new name is unique amongst the given + * node's siblings; results are undefined if this function is invoked + * with a name equal to one of the given node's siblings. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob + * to contain the new name + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, standard meanings + */ +int fdt_set_name(void *fdt, int nodeoffset, const char *name); + +/** + * fdt_setprop - create or change a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: pointer to data to set the property value to + * @len: length of the property value + * + * fdt_setprop() sets the value of the named property in the given + * node to the given value and length, creating the property if it + * does not already exist. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_setprop(void *fdt, int nodeoffset, const char *name, + const void *val, int len); + +/** + * fdt_setprop_placeholder - allocate space for a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @len: length of the property value + * @prop_data: return pointer to property data + * + * fdt_setprop_placeholer() allocates the named property in the given node. + * If the property exists it is resized. In either case a pointer to the + * property data is returned. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name, + int len, void **prop_data); + +/** + * fdt_setprop_u32 - set a property to a 32-bit integer + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 32-bit integer value for the property (native endian) + * + * fdt_setprop_u32() sets the value of the named property in the given + * node to the given 32-bit integer value (converting to big-endian if + * necessary), or creates a new property with that value if it does + * not already exist. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name, + uint32_t val) +{ + fdt32_t tmp = cpu_to_fdt32(val); + return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_setprop_u64 - set a property to a 64-bit integer + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 64-bit integer value for the property (native endian) + * + * fdt_setprop_u64() sets the value of the named property in the given + * node to the given 64-bit integer value (converting to big-endian if + * necessary), or creates a new property with that value if it does + * not already exist. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name, + uint64_t val) +{ + fdt64_t tmp = cpu_to_fdt64(val); + return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_setprop_cell - set a property to a single cell value + * + * This is an alternative name for fdt_setprop_u32() + */ +static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name, + uint32_t val) +{ + return fdt_setprop_u32(fdt, nodeoffset, name, val); +} + +/** + * fdt_setprop_string - set a property to a string value + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @str: string value for the property + * + * fdt_setprop_string() sets the value of the named property in the + * given node to the given string value (using the length of the + * string to determine the new length of the property), or creates a + * new property with that value if it does not already exist. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +#define fdt_setprop_string(fdt, nodeoffset, name, str) \ + fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str) + 1) + + +/** + * fdt_setprop_empty - set a property to an empty value + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * + * fdt_setprop_empty() sets the value of the named property in the + * given node to an empty (zero length) value, or creates a new empty + * property if it does not already exist. + * + * This function may insert or delete data from the blob, and will + * therefore change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +#define fdt_setprop_empty(fdt, nodeoffset, name) \ + fdt_setprop((fdt), (nodeoffset), (name), NULL, 0) + +/** + * fdt_appendprop - append to or create a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to append to + * @val: pointer to data to append to the property value + * @len: length of the data to append to the property value + * + * fdt_appendprop() appends the value to the named property in the + * given node, creating the property if it does not already exist. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_appendprop(void *fdt, int nodeoffset, const char *name, + const void *val, int len); + +/** + * fdt_appendprop_u32 - append a 32-bit integer value to a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 32-bit integer value to append to the property (native endian) + * + * fdt_appendprop_u32() appends the given 32-bit integer value + * (converting to big-endian if necessary) to the value of the named + * property in the given node, or creates a new property with that + * value if it does not already exist. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_appendprop_u32(void *fdt, int nodeoffset, + const char *name, uint32_t val) +{ + fdt32_t tmp = cpu_to_fdt32(val); + return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_appendprop_u64 - append a 64-bit integer value to a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @val: 64-bit integer value to append to the property (native endian) + * + * fdt_appendprop_u64() appends the given 64-bit integer value + * (converting to big-endian if necessary) to the value of the named + * property in the given node, or creates a new property with that + * value if it does not already exist. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +static inline int fdt_appendprop_u64(void *fdt, int nodeoffset, + const char *name, uint64_t val) +{ + fdt64_t tmp = cpu_to_fdt64(val); + return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp)); +} + +/** + * fdt_appendprop_cell - append a single cell value to a property + * + * This is an alternative name for fdt_appendprop_u32() + */ +static inline int fdt_appendprop_cell(void *fdt, int nodeoffset, + const char *name, uint32_t val) +{ + return fdt_appendprop_u32(fdt, nodeoffset, name, val); +} + +/** + * fdt_appendprop_string - append a string to a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to change + * @name: name of the property to change + * @str: string value to append to the property + * + * fdt_appendprop_string() appends the given string to the value of + * the named property in the given node, or creates a new property + * with that value if it does not already exist. + * + * This function may insert data into the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there is insufficient free space in the blob to + * contain the new property value + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_TRUNCATED, standard meanings + */ +#define fdt_appendprop_string(fdt, nodeoffset, name, str) \ + fdt_appendprop((fdt), (nodeoffset), (name), (str), strlen(str) + 1) + +/** + * fdt_delprop - delete a property + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node whose property to nop + * @name: name of the property to nop + * + * fdt_del_property() will delete the given property. + * + * This function will delete data from the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_NOTFOUND, node does not have the named property + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_delprop(void *fdt, int nodeoffset, const char *name); + +/** + * fdt_add_subnode_namelen - creates a new node based on substring + * @fdt: pointer to the device tree blob + * @parentoffset: structure block offset of a node + * @name: name of the subnode to locate + * @namelen: number of characters of name to consider + * + * Identical to fdt_add_subnode(), but use only the first namelen + * characters of name as the name of the new node. This is useful for + * creating subnodes based on a portion of a larger string, such as a + * full path. + */ +#ifndef SWIG /* Not available in Python */ +int fdt_add_subnode_namelen(void *fdt, int parentoffset, + const char *name, int namelen); +#endif + +/** + * fdt_add_subnode - creates a new node + * @fdt: pointer to the device tree blob + * @parentoffset: structure block offset of a node + * @name: name of the subnode to locate + * + * fdt_add_subnode() creates a new node as a subnode of the node at + * structure block offset parentoffset, with the given name (which + * should include the unit address, if any). + * + * This function will insert data into the blob, and will therefore + * change the offsets of some existing nodes. + + * returns: + * structure block offset of the created nodeequested subnode (>=0), on + * success + * -FDT_ERR_NOTFOUND, if the requested subnode does not exist + * -FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE + * tag + * -FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of + * the given name + * -FDT_ERR_NOSPACE, if there is insufficient free space in the + * blob to contain the new node + * -FDT_ERR_NOSPACE + * -FDT_ERR_BADLAYOUT + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings. + */ +int fdt_add_subnode(void *fdt, int parentoffset, const char *name); + +/** + * fdt_del_node - delete a node (subtree) + * @fdt: pointer to the device tree blob + * @nodeoffset: offset of the node to nop + * + * fdt_del_node() will remove the given node, including all its + * subnodes if any, from the blob. + * + * This function will delete data from the blob, and will therefore + * change the offsets of some existing nodes. + * + * returns: + * 0, on success + * -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_del_node(void *fdt, int nodeoffset); + +/** + * fdt_overlay_apply - Applies a DT overlay on a base DT + * @fdt: pointer to the base device tree blob + * @fdto: pointer to the device tree overlay blob + * + * fdt_overlay_apply() will apply the given device tree overlay on the + * given base device tree. + * + * Expect the base device tree to be modified, even if the function + * returns an error. + * + * returns: + * 0, on success + * -FDT_ERR_NOSPACE, there's not enough space in the base device tree + * -FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or + * properties in the base DT + * -FDT_ERR_BADPHANDLE, + * -FDT_ERR_BADOVERLAY, + * -FDT_ERR_NOPHANDLES, + * -FDT_ERR_INTERNAL, + * -FDT_ERR_BADLAYOUT, + * -FDT_ERR_BADMAGIC, + * -FDT_ERR_BADOFFSET, + * -FDT_ERR_BADPATH, + * -FDT_ERR_BADVERSION, + * -FDT_ERR_BADSTRUCTURE, + * -FDT_ERR_BADSTATE, + * -FDT_ERR_TRUNCATED, standard meanings + */ +int fdt_overlay_apply(void *fdt, void *fdto); + +/**********************************************************************/ +/* Debugging / informational functions */ +/**********************************************************************/ + +const char *fdt_strerror(int errval); + +#endif /* LIBFDT_H */ diff --git a/payloads/libpayload/include/libfdt/libfdt_env.h b/payloads/libpayload/include/libfdt/libfdt_env.h new file mode 100644 index 0000000..edc7e26 --- /dev/null +++ b/payloads/libpayload/include/libfdt/libfdt_env.h @@ -0,0 +1,135 @@ +#ifndef LIBFDT_ENV_H +#define LIBFDT_ENV_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * Copyright 2012 Kim Phillips, Freescale Semiconductor. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> + +#ifdef __CHECKER__ +#define FDT_FORCE __attribute__((force)) +#define FDT_BITWISE __attribute__((bitwise)) +#else +#define FDT_FORCE +#define FDT_BITWISE +#endif + +typedef uint16_t FDT_BITWISE fdt16_t; +typedef uint32_t FDT_BITWISE fdt32_t; +typedef uint64_t FDT_BITWISE fdt64_t; + +#define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n]) +#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1)) +#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3)) +#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7)) + +static inline uint16_t fdt16_to_cpu(fdt16_t x) +{ + return (FDT_FORCE uint16_t)CPU_TO_FDT16(x); +} +static inline fdt16_t cpu_to_fdt16(uint16_t x) +{ + return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x); +} + +static inline uint32_t fdt32_to_cpu(fdt32_t x) +{ + return (FDT_FORCE uint32_t)CPU_TO_FDT32(x); +} +static inline fdt32_t cpu_to_fdt32(uint32_t x) +{ + return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x); +} + +static inline uint64_t fdt64_to_cpu(fdt64_t x) +{ + return (FDT_FORCE uint64_t)CPU_TO_FDT64(x); +} +static inline fdt64_t cpu_to_fdt64(uint64_t x) +{ + return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x); +} +#undef CPU_TO_FDT64 +#undef CPU_TO_FDT32 +#undef CPU_TO_FDT16 +#undef EXTRACT_BYTE + +#ifdef __APPLE__ +#include <AvailabilityMacros.h> + +/* strnlen() is not available on Mac OS < 10.7 */ +#if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7) + +#define strnlen fdt_strnlen + +/* + * fdt_strnlen: returns the length of a string or max_count - which ever is + * smallest. + * Input 1 string: the string whose size is to be determined + * Input 2 max_count: the maximum value returned by this function + * Output: length of the string or max_count (the smallest of the two) + */ +static inline size_t fdt_strnlen(const char *string, size_t max_count) +{ + const char *p = memchr(string, 0, max_count); + return p ? p - string : max_count; +} + +#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \ + MAC_OS_X_VERSION_10_7) */ + +#endif /* __APPLE__ */ + +#endif /* LIBFDT_ENV_H */ diff --git a/payloads/libpayload/include/libfdt/libfdt_internal.h b/payloads/libpayload/include/libfdt/libfdt_internal.h new file mode 100644 index 0000000..4c0e9f9 --- /dev/null +++ b/payloads/libpayload/include/libfdt/libfdt_internal.h @@ -0,0 +1,95 @@ +#ifndef LIBFDT_INTERNAL_H +#define LIBFDT_INTERNAL_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <fdt.h> + +#define FDT_ALIGN(x, a) (((x) + (a)-1) & ~((a)-1)) +#define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE)) + +int fdt_ro_probe_(const void *fdt); +#define FDT_RO_PROBE(fdt) \ + { \ + int err_; \ + if ((err_ = fdt_ro_probe_(fdt)) != 0) \ + return err_; \ + } + +int fdt_check_node_offset_(const void *fdt, int offset); +int fdt_check_prop_offset_(const void *fdt, int offset); +const char *fdt_find_string_(const char *strtab, int tabsize, const char *s); +int fdt_node_end_offset_(void *fdt, int nodeoffset); + +static inline const void *fdt_offset_ptr_(const void *fdt, int offset) +{ + return (const char *)fdt + fdt_off_dt_struct(fdt) + offset; +} + +static inline void *fdt_offset_ptr_w_(void *fdt, int offset) +{ + return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset); +} + +static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n) +{ + const struct fdt_reserve_entry *rsv_table = + (const struct fdt_reserve_entry *)((const char *)fdt + fdt_off_mem_rsvmap(fdt)); + + return rsv_table + n; +} +static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n) +{ + return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n); +} + +#define FDT_SW_MAGIC (~FDT_MAGIC) + +#endif /* LIBFDT_INTERNAL_H */ diff --git a/payloads/libpayload/libfdt/Makefile.inc b/payloads/libpayload/libfdt/Makefile.inc new file mode 100644 index 0000000..19e1ea9 --- /dev/null +++ b/payloads/libpayload/libfdt/Makefile.inc @@ -0,0 +1,41 @@ +## +## This file is part of the libpayload project. +## +## Copyright (C) 2019 Philipp Hug <philipp(a)hug.cx> +## +## Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions +## are met: +## 1. Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## 2. Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in the +## documentation and/or other materials provided with the distribution. +## 3. The name of the author may not be used to endorse or promote products +## derived from this software without specific prior written permission. +## +## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +## SUCH DAMAGE. +## + +libfdt-$(CONFIG_LP_FDT) += fdt.c +libfdt-$(CONFIG_LP_FDT) += fdt_ro.c +#libfdt-$(CONFIG_LP_FDT) += fdt_wip.c +#libfdt-$(CONFIG_LP_FDT) += fdt_sw.c +#libfdt-$(CONFIG_LP_FDT) += fdt_rw.c +#libfdt-$(CONFIG_LP_FDT) += fdt_strerror.c +#libfdt-$(CONFIG_LP_FDT) += fdt_empty_tree.c +#libfdt-$(CONFIG_LP_FDT) += fdt_addresses.c +#libfdt-$(CONFIG_LP_FDT) += fdt_overlay.c + +INCLUDES += -Iinclude/libfdt +CLFAGS += -D_GNU_SOURCE diff --git a/payloads/libpayload/libfdt/fdt.c b/payloads/libpayload/libfdt/fdt.c new file mode 100644 index 0000000..ca45f25 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt.c @@ -0,0 +1,330 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +/* + * Minimal sanity check for a read-only tree. fdt_ro_probe_() checks + * that the given buffer contains what appears to be a flattened + * device tree with sane information in its header. + */ +int fdt_ro_probe_(const void *fdt) +{ + if (fdt_magic(fdt) == FDT_MAGIC) { + /* Complete tree */ + if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) + return -FDT_ERR_BADVERSION; + if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION) + return -FDT_ERR_BADVERSION; + } else if (fdt_magic(fdt) == FDT_SW_MAGIC) { + /* Unfinished sequential-write blob */ + if (fdt_size_dt_struct(fdt) == 0) + return -FDT_ERR_BADSTATE; + } else { + return -FDT_ERR_BADMAGIC; + } + + return 0; +} + +static int check_off_(uint32_t hdrsize, uint32_t totalsize, uint32_t off) +{ + return (off >= hdrsize) && (off <= totalsize); +} + +static int check_block_(uint32_t hdrsize, uint32_t totalsize, + uint32_t base, uint32_t size) +{ + if (!check_off_(hdrsize, totalsize, base)) + return 0; /* block start out of bounds */ + if ((base + size) < base) + return 0; /* overflow */ + if (!check_off_(hdrsize, totalsize, base + size)) + return 0; /* block end out of bounds */ + return 1; +} + +size_t fdt_header_size_(uint32_t version) +{ + if (version <= 1) + return FDT_V1_SIZE; + else if (version <= 2) + return FDT_V2_SIZE; + else if (version <= 3) + return FDT_V3_SIZE; + else if (version <= 16) + return FDT_V16_SIZE; + else + return FDT_V17_SIZE; +} + +int fdt_check_header(const void *fdt) +{ + size_t hdrsize; + + if (fdt_magic(fdt) != FDT_MAGIC) + return -FDT_ERR_BADMAGIC; + hdrsize = fdt_header_size(fdt); + if ((fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) + || (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)) + return -FDT_ERR_BADVERSION; + if (fdt_version(fdt) < fdt_last_comp_version(fdt)) + return -FDT_ERR_BADVERSION; + + if ((fdt_totalsize(fdt) < hdrsize) + || (fdt_totalsize(fdt) > INT_MAX)) + return -FDT_ERR_TRUNCATED; + + /* Bounds check memrsv block */ + if (!check_off_(hdrsize, fdt_totalsize(fdt), fdt_off_mem_rsvmap(fdt))) + return -FDT_ERR_TRUNCATED; + + /* Bounds check structure block */ + if (fdt_version(fdt) < 17) { + if (!check_off_(hdrsize, fdt_totalsize(fdt), + fdt_off_dt_struct(fdt))) + return -FDT_ERR_TRUNCATED; + } else { + if (!check_block_(hdrsize, fdt_totalsize(fdt), + fdt_off_dt_struct(fdt), + fdt_size_dt_struct(fdt))) + return -FDT_ERR_TRUNCATED; + } + + /* Bounds check strings block */ + if (!check_block_(hdrsize, fdt_totalsize(fdt), + fdt_off_dt_strings(fdt), fdt_size_dt_strings(fdt))) + return -FDT_ERR_TRUNCATED; + + return 0; +} + +const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len) +{ + unsigned absoffset = offset + fdt_off_dt_struct(fdt); + + if ((absoffset < offset) + || ((absoffset + len) < absoffset) + || (absoffset + len) > fdt_totalsize(fdt)) + return NULL; + + if (fdt_version(fdt) >= 0x11) + if (((offset + len) < offset) + || ((offset + len) > fdt_size_dt_struct(fdt))) + return NULL; + + return fdt_offset_ptr_(fdt, offset); +} + +uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset) +{ + const fdt32_t *tagp, *lenp; + uint32_t tag; + int offset = startoffset; + const char *p; + + *nextoffset = -FDT_ERR_TRUNCATED; + tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE); + if (!tagp) + return FDT_END; /* premature end */ + tag = fdt32_to_cpu(*tagp); + offset += FDT_TAGSIZE; + + *nextoffset = -FDT_ERR_BADSTRUCTURE; + switch (tag) { + case FDT_BEGIN_NODE: + /* skip name */ + do { + p = fdt_offset_ptr(fdt, offset++, 1); + } while (p && (*p != '\0')); + if (!p) + return FDT_END; /* premature end */ + break; + + case FDT_PROP: + lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp)); + if (!lenp) + return FDT_END; /* premature end */ + /* skip-name offset, length and value */ + offset += sizeof(struct fdt_property) - FDT_TAGSIZE + + fdt32_to_cpu(*lenp); + if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 && ((offset - fdt32_to_cpu(*lenp)) % 8) != 0) + offset += 4; + break; + + case FDT_END: + case FDT_END_NODE: + case FDT_NOP: + break; + + default: + return FDT_END; + } + + if (!fdt_offset_ptr(fdt, startoffset, offset - startoffset)) + return FDT_END; /* premature end */ + + *nextoffset = FDT_TAGALIGN(offset); + return tag; +} + +int fdt_check_node_offset_(const void *fdt, int offset) +{ + if ((offset < 0) || (offset % FDT_TAGSIZE) + || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE)) + return -FDT_ERR_BADOFFSET; + + return offset; +} + +int fdt_check_prop_offset_(const void *fdt, int offset) +{ + if ((offset < 0) || (offset % FDT_TAGSIZE) + || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP)) + return -FDT_ERR_BADOFFSET; + + return offset; +} + +int fdt_next_node(const void *fdt, int offset, int *depth) +{ + int nextoffset = 0; + uint32_t tag; + + if (offset >= 0) + if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0) + return nextoffset; + + do { + offset = nextoffset; + tag = fdt_next_tag(fdt, offset, &nextoffset); + + switch (tag) { + case FDT_PROP: + case FDT_NOP: + break; + + case FDT_BEGIN_NODE: + if (depth) + (*depth)++; + break; + + case FDT_END_NODE: + if (depth && ((--(*depth)) < 0)) + return nextoffset; + break; + + case FDT_END: + if ((nextoffset >= 0) + || ((nextoffset == -FDT_ERR_TRUNCATED) && !depth)) + return -FDT_ERR_NOTFOUND; + else + return nextoffset; + } + } while (tag != FDT_BEGIN_NODE); + + return offset; +} + +int fdt_first_subnode(const void *fdt, int offset) +{ + int depth = 0; + + offset = fdt_next_node(fdt, offset, &depth); + if (offset < 0 || depth != 1) + return -FDT_ERR_NOTFOUND; + + return offset; +} + +int fdt_next_subnode(const void *fdt, int offset) +{ + int depth = 1; + + /* + * With respect to the parent, the depth of the next subnode will be + * the same as the last. + */ + do { + offset = fdt_next_node(fdt, offset, &depth); + if (offset < 0 || depth < 1) + return -FDT_ERR_NOTFOUND; + } while (depth > 1); + + return offset; +} + +const char *fdt_find_string_(const char *strtab, int tabsize, const char *s) +{ + int len = strlen(s) + 1; + const char *last = strtab + tabsize - len; + const char *p; + + for (p = strtab; p <= last; p++) + if (memcmp(p, s, len) == 0) + return p; + return NULL; +} + +int fdt_move(const void *fdt, void *buf, int bufsize) +{ + FDT_RO_PROBE(fdt); + + if (fdt_totalsize(fdt) > bufsize) + return -FDT_ERR_NOSPACE; + + memmove(buf, fdt, fdt_totalsize(fdt)); + return 0; +} diff --git a/payloads/libpayload/libfdt/fdt_addresses.c b/payloads/libpayload/libfdt/fdt_addresses.c new file mode 100644 index 0000000..f13a87d --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_addresses.c @@ -0,0 +1,97 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2014 David Gibson <david(a)gibson.dropbear.id.au> + * Copyright (C) 2018 embedded brains GmbH + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +static int fdt_cells(const void *fdt, int nodeoffset, const char *name) +{ + const fdt32_t *c; + int val; + int len; + + c = fdt_getprop(fdt, nodeoffset, name, &len); + if (!c) + return len; + + if (len != sizeof(*c)) + return -FDT_ERR_BADNCELLS; + + val = fdt32_to_cpu(*c); + if ((val <= 0) || (val > FDT_MAX_NCELLS)) + return -FDT_ERR_BADNCELLS; + + return val; +} + +int fdt_address_cells(const void *fdt, int nodeoffset) +{ + int val; + + val = fdt_cells(fdt, nodeoffset, "#address-cells"); + if (val == -FDT_ERR_NOTFOUND) + return 2; + return val; +} + +int fdt_size_cells(const void *fdt, int nodeoffset) +{ + int val; + + val = fdt_cells(fdt, nodeoffset, "#size-cells"); + if (val == -FDT_ERR_NOTFOUND) + return 1; + return val; +} diff --git a/payloads/libpayload/libfdt/fdt_empty_tree.c b/payloads/libpayload/libfdt/fdt_empty_tree.c new file mode 100644 index 0000000..1bc6478 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_empty_tree.c @@ -0,0 +1,83 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2012 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +int fdt_create_empty_tree(void *buf, int bufsize) +{ + int err; + + err = fdt_create(buf, bufsize); + if (err) + return err; + + err = fdt_finish_reservemap(buf); + if (err) + return err; + + err = fdt_begin_node(buf, ""); + if (err) + return err; + + err = fdt_end_node(buf); + if (err) + return err; + + err = fdt_finish(buf); + if (err) + return err; + + return fdt_open_into(buf, buf, bufsize); +} diff --git a/payloads/libpayload/libfdt/fdt_overlay.c b/payloads/libpayload/libfdt/fdt_overlay.c new file mode 100644 index 0000000..7d2327c --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_overlay.c @@ -0,0 +1,920 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2016 Free Electrons + * Copyright (C) 2016 NextThing Co. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +/** + * overlay_get_target_phandle - retrieves the target phandle of a fragment + * @fdto: pointer to the device tree overlay blob + * @fragment: node offset of the fragment in the overlay + * + * overlay_get_target_phandle() retrieves the target phandle of an + * overlay fragment when that fragment uses a phandle (target + * property) instead of a path (target-path property). + * + * returns: + * the phandle pointed by the target property + * 0, if the phandle was not found + * -1, if the phandle was malformed + */ +static uint32_t overlay_get_target_phandle(const void *fdto, int fragment) +{ + const fdt32_t *val; + int len; + + val = fdt_getprop(fdto, fragment, "target", &len); + if (!val) + return 0; + + if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1)) + return (uint32_t)-1; + + return fdt32_to_cpu(*val); +} + +/** + * overlay_get_target - retrieves the offset of a fragment's target + * @fdt: Base device tree blob + * @fdto: Device tree overlay blob + * @fragment: node offset of the fragment in the overlay + * @pathp: pointer which receives the path of the target (or NULL) + * + * overlay_get_target() retrieves the target offset in the base + * device tree of a fragment, no matter how the actual targetting is + * done (through a phandle or a path) + * + * returns: + * the targetted node offset in the base device tree + * Negative error code on error + */ +static int overlay_get_target(const void *fdt, const void *fdto, + int fragment, char const **pathp) +{ + uint32_t phandle; + const char *path = NULL; + int path_len = 0, ret; + + /* Try first to do a phandle based lookup */ + phandle = overlay_get_target_phandle(fdto, fragment); + if (phandle == (uint32_t)-1) + return -FDT_ERR_BADPHANDLE; + + /* no phandle, try path */ + if (!phandle) { + /* And then a path based lookup */ + path = fdt_getprop(fdto, fragment, "target-path", &path_len); + if (path) + ret = fdt_path_offset(fdt, path); + else + ret = path_len; + } else + ret = fdt_node_offset_by_phandle(fdt, phandle); + + /* + * If we haven't found either a target or a + * target-path property in a node that contains a + * __overlay__ subnode (we wouldn't be called + * otherwise), consider it a improperly written + * overlay + */ + if (ret < 0 && path_len == -FDT_ERR_NOTFOUND) + ret = -FDT_ERR_BADOVERLAY; + + /* return on error */ + if (ret < 0) + return ret; + + /* return pointer to path (if available) */ + if (pathp) + *pathp = path ? path : NULL; + + return ret; +} + +/** + * overlay_phandle_add_offset - Increases a phandle by an offset + * @fdt: Base device tree blob + * @node: Device tree overlay blob + * @name: Name of the property to modify (phandle or linux,phandle) + * @delta: offset to apply + * + * overlay_phandle_add_offset() increments a node phandle by a given + * offset. + * + * returns: + * 0 on success. + * Negative error code on error + */ +static int overlay_phandle_add_offset(void *fdt, int node, + const char *name, uint32_t delta) +{ + const fdt32_t *val; + uint32_t adj_val; + int len; + + val = fdt_getprop(fdt, node, name, &len); + if (!val) + return len; + + if (len != sizeof(*val)) + return -FDT_ERR_BADPHANDLE; + + adj_val = fdt32_to_cpu(*val); + if ((adj_val + delta) < adj_val) + return -FDT_ERR_NOPHANDLES; + + adj_val += delta; + if (adj_val == (uint32_t)-1) + return -FDT_ERR_NOPHANDLES; + + return fdt_setprop_inplace_u32(fdt, node, name, adj_val); +} + +/** + * overlay_adjust_node_phandles - Offsets the phandles of a node + * @fdto: Device tree overlay blob + * @node: Offset of the node we want to adjust + * @delta: Offset to shift the phandles of + * + * overlay_adjust_node_phandles() adds a constant to all the phandles + * of a given node. This is mainly use as part of the overlay + * application process, when we want to update all the overlay + * phandles to not conflict with the overlays of the base device tree. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_adjust_node_phandles(void *fdto, int node, + uint32_t delta) +{ + int child; + int ret; + + ret = overlay_phandle_add_offset(fdto, node, "phandle", delta); + if (ret && ret != -FDT_ERR_NOTFOUND) + return ret; + + ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta); + if (ret && ret != -FDT_ERR_NOTFOUND) + return ret; + + fdt_for_each_subnode(child, fdto, node) + { + ret = overlay_adjust_node_phandles(fdto, child, delta); + if (ret) + return ret; + } + + return 0; +} + +/** + * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay + * @fdto: Device tree overlay blob + * @delta: Offset to shift the phandles of + * + * overlay_adjust_local_phandles() adds a constant to all the + * phandles of an overlay. This is mainly use as part of the overlay + * application process, when we want to update all the overlay + * phandles to not conflict with the overlays of the base device tree. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_adjust_local_phandles(void *fdto, uint32_t delta) +{ + /* + * Start adjusting the phandles from the overlay root + */ + return overlay_adjust_node_phandles(fdto, 0, delta); +} + +/** + * overlay_update_local_node_references - Adjust the overlay references + * @fdto: Device tree overlay blob + * @tree_node: Node offset of the node to operate on + * @fixup_node: Node offset of the matching local fixups node + * @delta: Offset to shift the phandles of + * + * overlay_update_local_nodes_references() update the phandles + * pointing to a node within the device tree overlay by adding a + * constant delta. + * + * This is mainly used as part of a device tree application process, + * where you want the device tree overlays phandles to not conflict + * with the ones from the base device tree before merging them. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_update_local_node_references(void *fdto, + int tree_node, + int fixup_node, + uint32_t delta) +{ + int fixup_prop; + int fixup_child; + int ret; + + fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) + { + const fdt32_t *fixup_val; + const char *tree_val; + const char *name; + int fixup_len; + int tree_len; + int i; + + fixup_val = fdt_getprop_by_offset(fdto, fixup_prop, + &name, &fixup_len); + if (!fixup_val) + return fixup_len; + + if (fixup_len % sizeof(uint32_t)) + return -FDT_ERR_BADOVERLAY; + + tree_val = fdt_getprop(fdto, tree_node, name, &tree_len); + if (!tree_val) { + if (tree_len == -FDT_ERR_NOTFOUND) + return -FDT_ERR_BADOVERLAY; + + return tree_len; + } + + for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) { + fdt32_t adj_val; + uint32_t poffset; + + poffset = fdt32_to_cpu(fixup_val[i]); + + /* + * phandles to fixup can be unaligned. + * + * Use a memcpy for the architectures that do + * not support unaligned accesses. + */ + memcpy(&adj_val, tree_val + poffset, sizeof(adj_val)); + + adj_val = cpu_to_fdt32(fdt32_to_cpu(adj_val) + delta); + + ret = fdt_setprop_inplace_namelen_partial(fdto, + tree_node, + name, + strlen(name), + poffset, + &adj_val, + sizeof(adj_val)); + if (ret == -FDT_ERR_NOSPACE) + return -FDT_ERR_BADOVERLAY; + + if (ret) + return ret; + } + } + + fdt_for_each_subnode(fixup_child, fdto, fixup_node) + { + const char *fixup_child_name = fdt_get_name(fdto, fixup_child, + NULL); + int tree_child; + + tree_child = fdt_subnode_offset(fdto, tree_node, + fixup_child_name); + if (tree_child == -FDT_ERR_NOTFOUND) + return -FDT_ERR_BADOVERLAY; + if (tree_child < 0) + return tree_child; + + ret = overlay_update_local_node_references(fdto, + tree_child, + fixup_child, + delta); + if (ret) + return ret; + } + + return 0; +} + +/** + * overlay_update_local_references - Adjust the overlay references + * @fdto: Device tree overlay blob + * @delta: Offset to shift the phandles of + * + * overlay_update_local_references() update all the phandles pointing + * to a node within the device tree overlay by adding a constant + * delta to not conflict with the base overlay. + * + * This is mainly used as part of a device tree application process, + * where you want the device tree overlays phandles to not conflict + * with the ones from the base device tree before merging them. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_update_local_references(void *fdto, uint32_t delta) +{ + int fixups; + + fixups = fdt_path_offset(fdto, "/__local_fixups__"); + if (fixups < 0) { + /* There's no local phandles to adjust, bail out */ + if (fixups == -FDT_ERR_NOTFOUND) + return 0; + + return fixups; + } + + /* + * Update our local references from the root of the tree + */ + return overlay_update_local_node_references(fdto, 0, fixups, + delta); +} + +/** + * overlay_fixup_one_phandle - Set an overlay phandle to the base one + * @fdt: Base Device Tree blob + * @fdto: Device tree overlay blob + * @symbols_off: Node offset of the symbols node in the base device tree + * @path: Path to a node holding a phandle in the overlay + * @path_len: number of path characters to consider + * @name: Name of the property holding the phandle reference in the overlay + * @name_len: number of name characters to consider + * @poffset: Offset within the overlay property where the phandle is stored + * @label: Label of the node referenced by the phandle + * + * overlay_fixup_one_phandle() resolves an overlay phandle pointing to + * a node in the base device tree. + * + * This is part of the device tree overlay application process, when + * you want all the phandles in the overlay to point to the actual + * base dt nodes. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_fixup_one_phandle(void *fdt, void *fdto, + int symbols_off, + const char *path, uint32_t path_len, + const char *name, uint32_t name_len, + int poffset, const char *label) +{ + const char *symbol_path; + uint32_t phandle; + fdt32_t phandle_prop; + int symbol_off, fixup_off; + int prop_len; + + if (symbols_off < 0) + return symbols_off; + + symbol_path = fdt_getprop(fdt, symbols_off, label, + &prop_len); + if (!symbol_path) + return prop_len; + + symbol_off = fdt_path_offset(fdt, symbol_path); + if (symbol_off < 0) + return symbol_off; + + phandle = fdt_get_phandle(fdt, symbol_off); + if (!phandle) + return -FDT_ERR_NOTFOUND; + + fixup_off = fdt_path_offset_namelen(fdto, path, path_len); + if (fixup_off == -FDT_ERR_NOTFOUND) + return -FDT_ERR_BADOVERLAY; + if (fixup_off < 0) + return fixup_off; + + phandle_prop = cpu_to_fdt32(phandle); + return fdt_setprop_inplace_namelen_partial(fdto, fixup_off, + name, name_len, poffset, + &phandle_prop, + sizeof(phandle_prop)); +}; + +/** + * overlay_fixup_phandle - Set an overlay phandle to the base one + * @fdt: Base Device Tree blob + * @fdto: Device tree overlay blob + * @symbols_off: Node offset of the symbols node in the base device tree + * @property: Property offset in the overlay holding the list of fixups + * + * overlay_fixup_phandle() resolves all the overlay phandles pointed + * to in a __fixups__ property, and updates them to match the phandles + * in use in the base device tree. + * + * This is part of the device tree overlay application process, when + * you want all the phandles in the overlay to point to the actual + * base dt nodes. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off, + int property) +{ + const char *value; + const char *label; + int len; + + value = fdt_getprop_by_offset(fdto, property, + &label, &len); + if (!value) { + if (len == -FDT_ERR_NOTFOUND) + return -FDT_ERR_INTERNAL; + + return len; + } + + do { + const char *path, *name, *fixup_end; + const char *fixup_str = value; + uint32_t path_len, name_len; + uint32_t fixup_len; + char *sep, *endptr; + int poffset, ret; + + fixup_end = memchr(value, '\0', len); + if (!fixup_end) + return -FDT_ERR_BADOVERLAY; + fixup_len = fixup_end - fixup_str; + + len -= fixup_len + 1; + value += fixup_len + 1; + + path = fixup_str; + sep = memchr(fixup_str, ':', fixup_len); + if (!sep || *sep != ':') + return -FDT_ERR_BADOVERLAY; + + path_len = sep - path; + if (path_len == (fixup_len - 1)) + return -FDT_ERR_BADOVERLAY; + + fixup_len -= path_len + 1; + name = sep + 1; + sep = memchr(name, ':', fixup_len); + if (!sep || *sep != ':') + return -FDT_ERR_BADOVERLAY; + + name_len = sep - name; + if (!name_len) + return -FDT_ERR_BADOVERLAY; + + poffset = strtoul(sep + 1, &endptr, 10); + if ((*endptr != '\0') || (endptr <= (sep + 1))) + return -FDT_ERR_BADOVERLAY; + + ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off, + path, path_len, name, name_len, + poffset, label); + if (ret) + return ret; + } while (len > 0); + + return 0; +} + +/** + * overlay_fixup_phandles - Resolve the overlay phandles to the base + * device tree + * @fdt: Base Device Tree blob + * @fdto: Device tree overlay blob + * + * overlay_fixup_phandles() resolves all the overlay phandles pointing + * to nodes in the base device tree. + * + * This is one of the steps of the device tree overlay application + * process, when you want all the phandles in the overlay to point to + * the actual base dt nodes. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_fixup_phandles(void *fdt, void *fdto) +{ + int fixups_off, symbols_off; + int property; + + /* We can have overlays without any fixups */ + fixups_off = fdt_path_offset(fdto, "/__fixups__"); + if (fixups_off == -FDT_ERR_NOTFOUND) + return 0; /* nothing to do */ + if (fixups_off < 0) + return fixups_off; + + /* And base DTs without symbols */ + symbols_off = fdt_path_offset(fdt, "/__symbols__"); + if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND))) + return symbols_off; + + fdt_for_each_property_offset(property, fdto, fixups_off) + { + int ret; + + ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property); + if (ret) + return ret; + } + + return 0; +} + +/** + * overlay_apply_node - Merges a node into the base device tree + * @fdt: Base Device Tree blob + * @target: Node offset in the base device tree to apply the fragment to + * @fdto: Device tree overlay blob + * @node: Node offset in the overlay holding the changes to merge + * + * overlay_apply_node() merges a node into a target base device tree + * node pointed. + * + * This is part of the final step in the device tree overlay + * application process, when all the phandles have been adjusted and + * resolved and you just have to merge overlay into the base device + * tree. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_apply_node(void *fdt, int target, + void *fdto, int node) +{ + int property; + int subnode; + + fdt_for_each_property_offset(property, fdto, node) + { + const char *name; + const void *prop; + int prop_len; + int ret; + + prop = fdt_getprop_by_offset(fdto, property, &name, + &prop_len); + if (prop_len == -FDT_ERR_NOTFOUND) + return -FDT_ERR_INTERNAL; + if (prop_len < 0) + return prop_len; + + ret = fdt_setprop(fdt, target, name, prop, prop_len); + if (ret) + return ret; + } + + fdt_for_each_subnode(subnode, fdto, node) + { + const char *name = fdt_get_name(fdto, subnode, NULL); + int nnode; + int ret; + + nnode = fdt_add_subnode(fdt, target, name); + if (nnode == -FDT_ERR_EXISTS) { + nnode = fdt_subnode_offset(fdt, target, name); + if (nnode == -FDT_ERR_NOTFOUND) + return -FDT_ERR_INTERNAL; + } + + if (nnode < 0) + return nnode; + + ret = overlay_apply_node(fdt, nnode, fdto, subnode); + if (ret) + return ret; + } + + return 0; +} + +/** + * overlay_merge - Merge an overlay into its base device tree + * @fdt: Base Device Tree blob + * @fdto: Device tree overlay blob + * + * overlay_merge() merges an overlay into its base device tree. + * + * This is the next to last step in the device tree overlay application + * process, when all the phandles have been adjusted and resolved and + * you just have to merge overlay into the base device tree. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_merge(void *fdt, void *fdto) +{ + int fragment; + + fdt_for_each_subnode(fragment, fdto, 0) + { + int overlay; + int target; + int ret; + + /* + * Each fragments will have an __overlay__ node. If + * they don't, it's not supposed to be merged + */ + overlay = fdt_subnode_offset(fdto, fragment, "__overlay__"); + if (overlay == -FDT_ERR_NOTFOUND) + continue; + + if (overlay < 0) + return overlay; + + target = overlay_get_target(fdt, fdto, fragment, NULL); + if (target < 0) + return target; + + ret = overlay_apply_node(fdt, target, fdto, overlay); + if (ret) + return ret; + } + + return 0; +} + +static int get_path_len(const void *fdt, int nodeoffset) +{ + int len = 0, namelen; + const char *name; + + FDT_RO_PROBE(fdt); + + for (;;) { + name = fdt_get_name(fdt, nodeoffset, &namelen); + if (!name) + return namelen; + + /* root? we're done */ + if (namelen == 0) + break; + + nodeoffset = fdt_parent_offset(fdt, nodeoffset); + if (nodeoffset < 0) + return nodeoffset; + len += namelen + 1; + } + + /* in case of root pretend it's "/" */ + if (len == 0) + len++; + return len; +} + +/** + * overlay_symbol_update - Update the symbols of base tree after a merge + * @fdt: Base Device Tree blob + * @fdto: Device tree overlay blob + * + * overlay_symbol_update() updates the symbols of the base tree with the + * symbols of the applied overlay + * + * This is the last step in the device tree overlay application + * process, allowing the reference of overlay symbols by subsequent + * overlay operations. + * + * returns: + * 0 on success + * Negative error code on failure + */ +static int overlay_symbol_update(void *fdt, void *fdto) +{ + int root_sym, ov_sym, prop, path_len, fragment, target; + int len, frag_name_len, ret, rel_path_len; + const char *s, *e; + const char *path; + const char *name; + const char *frag_name; + const char *rel_path; + const char *target_path; + char *buf; + void *p; + + ov_sym = fdt_subnode_offset(fdto, 0, "__symbols__"); + + /* if no overlay symbols exist no problem */ + if (ov_sym < 0) + return 0; + + root_sym = fdt_subnode_offset(fdt, 0, "__symbols__"); + + /* it no root symbols exist we should create them */ + if (root_sym == -FDT_ERR_NOTFOUND) + root_sym = fdt_add_subnode(fdt, 0, "__symbols__"); + + /* any error is fatal now */ + if (root_sym < 0) + return root_sym; + + /* iterate over each overlay symbol */ + fdt_for_each_property_offset(prop, fdto, ov_sym) + { + path = fdt_getprop_by_offset(fdto, prop, &name, &path_len); + if (!path) + return path_len; + + /* verify it's a string property (terminated by a single \0) */ + if (path_len < 1 || memchr(path, '\0', path_len) != &path[path_len - 1]) + return -FDT_ERR_BADVALUE; + + /* keep end marker to avoid strlen() */ + e = path + path_len; + + /* format: /<fragment-name>/__overlay__/<relative-subnode-path> */ + + if (*path != '/') + return -FDT_ERR_BADVALUE; + + /* get fragment name first */ + s = strchr(path + 1, '/'); + if (!s) + return -FDT_ERR_BADOVERLAY; + + frag_name = path + 1; + frag_name_len = s - path - 1; + + /* verify format; safe since "s" lies in \0 terminated prop */ + len = sizeof("/__overlay__/") - 1; + if ((e - s) < len || memcmp(s, "/__overlay__/", len)) + return -FDT_ERR_BADOVERLAY; + + rel_path = s + len; + rel_path_len = e - rel_path; + + /* find the fragment index in which the symbol lies */ + ret = fdt_subnode_offset_namelen(fdto, 0, frag_name, + frag_name_len); + /* not found? */ + if (ret < 0) + return -FDT_ERR_BADOVERLAY; + fragment = ret; + + /* an __overlay__ subnode must exist */ + ret = fdt_subnode_offset(fdto, fragment, "__overlay__"); + if (ret < 0) + return -FDT_ERR_BADOVERLAY; + + /* get the target of the fragment */ + ret = overlay_get_target(fdt, fdto, fragment, &target_path); + if (ret < 0) + return ret; + target = ret; + + /* if we have a target path use */ + if (!target_path) { + ret = get_path_len(fdt, target); + if (ret < 0) + return ret; + len = ret; + } else { + len = strlen(target_path); + } + + ret = fdt_setprop_placeholder(fdt, root_sym, name, + len + (len > 1) + rel_path_len + 1, &p); + if (ret < 0) + return ret; + + if (!target_path) { + /* again in case setprop_placeholder changed it */ + ret = overlay_get_target(fdt, fdto, fragment, &target_path); + if (ret < 0) + return ret; + target = ret; + } + + buf = p; + if (len > 1) { /* target is not root */ + if (!target_path) { + ret = fdt_get_path(fdt, target, buf, len + 1); + if (ret < 0) + return ret; + } else + memcpy(buf, target_path, len + 1); + + } else + len--; + + buf[len] = '/'; + memcpy(buf + len + 1, rel_path, rel_path_len); + buf[len + 1 + rel_path_len] = '\0'; + } + + return 0; +} + +int fdt_overlay_apply(void *fdt, void *fdto) +{ + uint32_t delta = fdt_get_max_phandle(fdt); + int ret; + + FDT_RO_PROBE(fdt); + FDT_RO_PROBE(fdto); + + ret = overlay_adjust_local_phandles(fdto, delta); + if (ret) + goto err; + + ret = overlay_update_local_references(fdto, delta); + if (ret) + goto err; + + ret = overlay_fixup_phandles(fdt, fdto); + if (ret) + goto err; + + ret = overlay_merge(fdt, fdto); + if (ret) + goto err; + + ret = overlay_symbol_update(fdt, fdto); + if (ret) + goto err; + + /* + * The overlay has been damaged, erase its magic. + */ + fdt_set_magic(fdto, ~0); + + return 0; + +err: + /* + * The overlay might have been damaged, erase its magic. + */ + fdt_set_magic(fdto, ~0); + + /* + * The base device tree might have been damaged, erase its + * magic. + */ + fdt_set_magic(fdt, ~0); + + return ret; +} diff --git a/payloads/libpayload/libfdt/fdt_ro.c b/payloads/libpayload/libfdt/fdt_ro.c new file mode 100644 index 0000000..3204e70 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_ro.c @@ -0,0 +1,920 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +static int fdt_nodename_eq_(const void *fdt, int offset, + const char *s, int len) +{ + int olen; + const char *p = fdt_get_name(fdt, offset, &olen); + + if (!p || olen < len) + /* short match */ + return 0; + + if (memcmp(p, s, len) != 0) + return 0; + + if (p[len] == '\0') + return 1; + else if (!memchr(s, '@', len) && (p[len] == '@')) + return 1; + else + return 0; +} + +const char *fdt_get_string(const void *fdt, int stroffset, int *lenp) +{ + uint32_t absoffset = stroffset + fdt_off_dt_strings(fdt); + size_t len; + int err; + const char *s, *n; + + err = fdt_ro_probe_(fdt); + if (err != 0) + goto fail; + + err = -FDT_ERR_BADOFFSET; + if (absoffset >= fdt_totalsize(fdt)) + goto fail; + len = fdt_totalsize(fdt) - absoffset; + + if (fdt_magic(fdt) == FDT_MAGIC) { + if (stroffset < 0) + goto fail; + if (fdt_version(fdt) >= 17) { + if (stroffset >= fdt_size_dt_strings(fdt)) + goto fail; + if ((fdt_size_dt_strings(fdt) - stroffset) < len) + len = fdt_size_dt_strings(fdt) - stroffset; + } + } else if (fdt_magic(fdt) == FDT_SW_MAGIC) { + if ((stroffset >= 0) + || (stroffset < -fdt_size_dt_strings(fdt))) + goto fail; + if ((-stroffset) < len) + len = -stroffset; + } else { + err = -FDT_ERR_INTERNAL; + goto fail; + } + + s = (const char *)fdt + absoffset; + n = memchr(s, '\0', len); + if (!n) { + /* missing terminating NULL */ + err = -FDT_ERR_TRUNCATED; + goto fail; + } + + if (lenp) + *lenp = n - s; + return s; + +fail: + if (lenp) + *lenp = err; + return NULL; +} + +const char *fdt_string(const void *fdt, int stroffset) +{ + return fdt_get_string(fdt, stroffset, NULL); +} + +static int fdt_string_eq_(const void *fdt, int stroffset, + const char *s, int len) +{ + int slen; + const char *p = fdt_get_string(fdt, stroffset, &slen); + + return p && (slen == len) && (memcmp(p, s, len) == 0); +} + +uint32_t fdt_get_max_phandle(const void *fdt) +{ + uint32_t max_phandle = 0; + int offset; + + for (offset = fdt_next_node(fdt, -1, NULL);; + offset = fdt_next_node(fdt, offset, NULL)) { + uint32_t phandle; + + if (offset == -FDT_ERR_NOTFOUND) + return max_phandle; + + if (offset < 0) + return (uint32_t)-1; + + phandle = fdt_get_phandle(fdt, offset); + if (phandle == (uint32_t)-1) + continue; + + if (phandle > max_phandle) + max_phandle = phandle; + } + + return 0; +} + +static const struct fdt_reserve_entry *fdt_mem_rsv(const void *fdt, int n) +{ + int offset = n * sizeof(struct fdt_reserve_entry); + int absoffset = fdt_off_mem_rsvmap(fdt) + offset; + + if (absoffset < fdt_off_mem_rsvmap(fdt)) + return NULL; + if (absoffset > fdt_totalsize(fdt) - sizeof(struct fdt_reserve_entry)) + return NULL; + return fdt_mem_rsv_(fdt, n); +} + +int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size) +{ + const struct fdt_reserve_entry *re; + + FDT_RO_PROBE(fdt); + re = fdt_mem_rsv(fdt, n); + if (!re) + return -FDT_ERR_BADOFFSET; + + *address = fdt64_ld(&re->address); + *size = fdt64_ld(&re->size); + return 0; +} + +int fdt_num_mem_rsv(const void *fdt) +{ + int i; + const struct fdt_reserve_entry *re; + + for (i = 0; (re = fdt_mem_rsv(fdt, i)) != NULL; i++) { + if (fdt64_ld(&re->size) == 0) + return i; + } + return -FDT_ERR_TRUNCATED; +} + +static int nextprop_(const void *fdt, int offset) +{ + uint32_t tag; + int nextoffset; + + do { + tag = fdt_next_tag(fdt, offset, &nextoffset); + + switch (tag) { + case FDT_END: + if (nextoffset >= 0) + return -FDT_ERR_BADSTRUCTURE; + else + return nextoffset; + + case FDT_PROP: + return offset; + } + offset = nextoffset; + } while (tag == FDT_NOP); + + return -FDT_ERR_NOTFOUND; +} + +int fdt_subnode_offset_namelen(const void *fdt, int offset, + const char *name, int namelen) +{ + int depth; + + FDT_RO_PROBE(fdt); + + for (depth = 0; + (offset >= 0) && (depth >= 0); + offset = fdt_next_node(fdt, offset, &depth)) + if ((depth == 1) + && fdt_nodename_eq_(fdt, offset, name, namelen)) + return offset; + + if (depth < 0) + return -FDT_ERR_NOTFOUND; + return offset; /* error */ +} + +int fdt_subnode_offset(const void *fdt, int parentoffset, + const char *name) +{ + return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name)); +} + +int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen) +{ + const char *end = path + namelen; + const char *p = path; + int offset = 0; + + FDT_RO_PROBE(fdt); + + /* see if we have an alias */ + if (*path != '/') { + const char *q = memchr(path, '/', end - p); + + if (!q) + q = end; + + p = fdt_get_alias_namelen(fdt, p, q - p); + if (!p) + return -FDT_ERR_BADPATH; + offset = fdt_path_offset(fdt, p); + + p = q; + } + + while (p < end) { + const char *q; + + while (*p == '/') { + p++; + if (p == end) + return offset; + } + q = memchr(p, '/', end - p); + if (!q) + q = end; + + offset = fdt_subnode_offset_namelen(fdt, offset, p, q - p); + if (offset < 0) + return offset; + + p = q; + } + + return offset; +} + +int fdt_path_offset(const void *fdt, const char *path) +{ + return fdt_path_offset_namelen(fdt, path, strlen(path)); +} + +const char *fdt_get_name(const void *fdt, int nodeoffset, int *len) +{ + const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset); + const char *nameptr; + int err; + + if (((err = fdt_ro_probe_(fdt)) != 0) + || ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0)) + goto fail; + + nameptr = nh->name; + + if (fdt_version(fdt) < 0x10) { + /* + * For old FDT versions, match the naming conventions of V16: + * give only the leaf name (after all /). The actual tree + * contents are loosely checked. + */ + const char *leaf; + leaf = strrchr(nameptr, '/'); + if (leaf == NULL) { + err = -FDT_ERR_BADSTRUCTURE; + goto fail; + } + nameptr = leaf + 1; + } + + if (len) + *len = strlen(nameptr); + + return nameptr; + +fail: + if (len) + *len = err; + return NULL; +} + +int fdt_first_property_offset(const void *fdt, int nodeoffset) +{ + int offset; + + if ((offset = fdt_check_node_offset_(fdt, nodeoffset)) < 0) + return offset; + + return nextprop_(fdt, offset); +} + +int fdt_next_property_offset(const void *fdt, int offset) +{ + if ((offset = fdt_check_prop_offset_(fdt, offset)) < 0) + return offset; + + return nextprop_(fdt, offset); +} + +static const struct fdt_property *fdt_get_property_by_offset_(const void *fdt, + int offset, + int *lenp) +{ + int err; + const struct fdt_property *prop; + + if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) { + if (lenp) + *lenp = err; + return NULL; + } + + prop = fdt_offset_ptr_(fdt, offset); + + if (lenp) + *lenp = fdt32_ld(&prop->len); + + return prop; +} + +const struct fdt_property *fdt_get_property_by_offset(const void *fdt, + int offset, + int *lenp) +{ + /* Prior to version 16, properties may need realignment + * and this API does not work. fdt_getprop_*() will, however. */ + + if (fdt_version(fdt) < 0x10) { + if (lenp) + *lenp = -FDT_ERR_BADVERSION; + return NULL; + } + + return fdt_get_property_by_offset_(fdt, offset, lenp); +} + +static const struct fdt_property *fdt_get_property_namelen_(const void *fdt, + int offset, + const char *name, + int namelen, + int *lenp, + int *poffset) +{ + for (offset = fdt_first_property_offset(fdt, offset); + (offset >= 0); + (offset = fdt_next_property_offset(fdt, offset))) { + const struct fdt_property *prop; + + if (!(prop = fdt_get_property_by_offset_(fdt, offset, lenp))) { + offset = -FDT_ERR_INTERNAL; + break; + } + if (fdt_string_eq_(fdt, fdt32_ld(&prop->nameoff), + name, namelen)) { + if (poffset) + *poffset = offset; + return prop; + } + } + + if (lenp) + *lenp = offset; + return NULL; +} + + +const struct fdt_property *fdt_get_property_namelen(const void *fdt, + int offset, + const char *name, + int namelen, int *lenp) +{ + /* Prior to version 16, properties may need realignment + * and this API does not work. fdt_getprop_*() will, however. */ + if (fdt_version(fdt) < 0x10) { + if (lenp) + *lenp = -FDT_ERR_BADVERSION; + return NULL; + } + + return fdt_get_property_namelen_(fdt, offset, name, namelen, lenp, + NULL); +} + + +const struct fdt_property *fdt_get_property(const void *fdt, + int nodeoffset, + const char *name, int *lenp) +{ + return fdt_get_property_namelen(fdt, nodeoffset, name, + strlen(name), lenp); +} + +const void *fdt_getprop_namelen(const void *fdt, int nodeoffset, + const char *name, int namelen, int *lenp) +{ + int poffset; + const struct fdt_property *prop; + + prop = fdt_get_property_namelen_(fdt, nodeoffset, name, namelen, lenp, + &poffset); + if (!prop) + return NULL; + + /* Handle realignment */ + if (fdt_version(fdt) < 0x10 && (poffset + sizeof(*prop)) % 8 && fdt32_ld(&prop->len) >= 8) + return prop->data + 4; + return prop->data; +} + +const void *fdt_getprop_by_offset(const void *fdt, int offset, + const char **namep, int *lenp) +{ + const struct fdt_property *prop; + + prop = fdt_get_property_by_offset_(fdt, offset, lenp); + if (!prop) + return NULL; + if (namep) { + const char *name; + int namelen; + name = fdt_get_string(fdt, fdt32_ld(&prop->nameoff), + &namelen); + if (!name) { + if (lenp) + *lenp = namelen; + return NULL; + } + *namep = name; + } + + /* Handle realignment */ + if (fdt_version(fdt) < 0x10 && (offset + sizeof(*prop)) % 8 && fdt32_ld(&prop->len) >= 8) + return prop->data + 4; + return prop->data; +} + +const void *fdt_getprop(const void *fdt, int nodeoffset, + const char *name, int *lenp) +{ + return fdt_getprop_namelen(fdt, nodeoffset, name, strlen(name), lenp); +} + +uint32_t fdt_get_phandle(const void *fdt, int nodeoffset) +{ + const fdt32_t *php; + int len; + + /* FIXME: This is a bit sub-optimal, since we potentially scan + * over all the properties twice. */ + php = fdt_getprop(fdt, nodeoffset, "phandle", &len); + if (!php || (len != sizeof(*php))) { + php = fdt_getprop(fdt, nodeoffset, "linux,phandle", &len); + if (!php || (len != sizeof(*php))) + return 0; + } + + return fdt32_ld(php); +} + +const char *fdt_get_alias_namelen(const void *fdt, + const char *name, int namelen) +{ + int aliasoffset; + + aliasoffset = fdt_path_offset(fdt, "/aliases"); + if (aliasoffset < 0) + return NULL; + + return fdt_getprop_namelen(fdt, aliasoffset, name, namelen, NULL); +} + +const char *fdt_get_alias(const void *fdt, const char *name) +{ + return fdt_get_alias_namelen(fdt, name, strlen(name)); +} + +int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen) +{ + int pdepth = 0, p = 0; + int offset, depth, namelen; + const char *name; + + FDT_RO_PROBE(fdt); + + if (buflen < 2) + return -FDT_ERR_NOSPACE; + + for (offset = 0, depth = 0; + (offset >= 0) && (offset <= nodeoffset); + offset = fdt_next_node(fdt, offset, &depth)) { + while (pdepth > depth) { + do { + p--; + } while (buf[p - 1] != '/'); + pdepth--; + } + + if (pdepth >= depth) { + name = fdt_get_name(fdt, offset, &namelen); + if (!name) + return namelen; + if ((p + namelen + 1) <= buflen) { + memcpy(buf + p, name, namelen); + p += namelen; + buf[p++] = '/'; + pdepth++; + } + } + + if (offset == nodeoffset) { + if (pdepth < (depth + 1)) + return -FDT_ERR_NOSPACE; + + if (p > 1) /* special case so that root path is "/", not "" */ + p--; + buf[p] = '\0'; + return 0; + } + } + + if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0)) + return -FDT_ERR_BADOFFSET; + else if (offset == -FDT_ERR_BADOFFSET) + return -FDT_ERR_BADSTRUCTURE; + + return offset; /* error from fdt_next_node() */ +} + +int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset, + int supernodedepth, int *nodedepth) +{ + int offset, depth; + int supernodeoffset = -FDT_ERR_INTERNAL; + + FDT_RO_PROBE(fdt); + + if (supernodedepth < 0) + return -FDT_ERR_NOTFOUND; + + for (offset = 0, depth = 0; + (offset >= 0) && (offset <= nodeoffset); + offset = fdt_next_node(fdt, offset, &depth)) { + if (depth == supernodedepth) + supernodeoffset = offset; + + if (offset == nodeoffset) { + if (nodedepth) + *nodedepth = depth; + + if (supernodedepth > depth) + return -FDT_ERR_NOTFOUND; + else + return supernodeoffset; + } + } + + if ((offset == -FDT_ERR_NOTFOUND) || (offset >= 0)) + return -FDT_ERR_BADOFFSET; + else if (offset == -FDT_ERR_BADOFFSET) + return -FDT_ERR_BADSTRUCTURE; + + return offset; /* error from fdt_next_node() */ +} + +int fdt_node_depth(const void *fdt, int nodeoffset) +{ + int nodedepth; + int err; + + err = fdt_supernode_atdepth_offset(fdt, nodeoffset, 0, &nodedepth); + if (err) + return (err < 0) ? err : -FDT_ERR_INTERNAL; + return nodedepth; +} + +int fdt_parent_offset(const void *fdt, int nodeoffset) +{ + int nodedepth = fdt_node_depth(fdt, nodeoffset); + + if (nodedepth < 0) + return nodedepth; + return fdt_supernode_atdepth_offset(fdt, nodeoffset, + nodedepth - 1, NULL); +} + +int fdt_node_offset_by_prop_value(const void *fdt, int startoffset, + const char *propname, + const void *propval, int proplen) +{ + int offset; + const void *val; + int len; + + FDT_RO_PROBE(fdt); + + /* FIXME: The algorithm here is pretty horrible: we scan each + * property of a node in fdt_getprop(), then if that didn't + * find what we want, we scan over them again making our way + * to the next node. Still it's the easiest to implement + * approach; performance can come later. */ + for (offset = fdt_next_node(fdt, startoffset, NULL); + offset >= 0; + offset = fdt_next_node(fdt, offset, NULL)) { + val = fdt_getprop(fdt, offset, propname, &len); + if (val && (len == proplen) + && (memcmp(val, propval, len) == 0)) + return offset; + } + + return offset; /* error from fdt_next_node() */ +} + +int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle) +{ + int offset; + + if ((phandle == 0) || (phandle == -1)) + return -FDT_ERR_BADPHANDLE; + + FDT_RO_PROBE(fdt); + + /* FIXME: The algorithm here is pretty horrible: we + * potentially scan each property of a node in + * fdt_get_phandle(), then if that didn't find what + * we want, we scan over them again making our way to the next + * node. Still it's the easiest to implement approach; + * performance can come later. */ + for (offset = fdt_next_node(fdt, -1, NULL); + offset >= 0; + offset = fdt_next_node(fdt, offset, NULL)) { + if (fdt_get_phandle(fdt, offset) == phandle) + return offset; + } + + return offset; /* error from fdt_next_node() */ +} + +int fdt_stringlist_contains(const char *strlist, int listlen, const char *str) +{ + int len = strlen(str); + const char *p; + + while (listlen >= len) { + if (memcmp(str, strlist, len + 1) == 0) + return 1; + p = memchr(strlist, '\0', listlen); + if (!p) + return 0; /* malformed strlist.. */ + listlen -= (p - strlist) + 1; + strlist = p + 1; + } + return 0; +} + +int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property) +{ + const char *list, *end; + int length, count = 0; + + list = fdt_getprop(fdt, nodeoffset, property, &length); + if (!list) + return length; + + end = list + length; + + while (list < end) { + length = strnlen(list, end - list) + 1; + + /* Abort if the last string isn't properly NUL-terminated. */ + if (list + length > end) + return -FDT_ERR_BADVALUE; + + list += length; + count++; + } + + return count; +} + +int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property, + const char *string) +{ + int length, len, idx = 0; + const char *list, *end; + + list = fdt_getprop(fdt, nodeoffset, property, &length); + if (!list) + return length; + + len = strlen(string) + 1; + end = list + length; + + while (list < end) { + length = strnlen(list, end - list) + 1; + + /* Abort if the last string isn't properly NUL-terminated. */ + if (list + length > end) + return -FDT_ERR_BADVALUE; + + if (length == len && memcmp(list, string, length) == 0) + return idx; + + list += length; + idx++; + } + + return -FDT_ERR_NOTFOUND; +} + +const char *fdt_stringlist_get(const void *fdt, int nodeoffset, + const char *property, int idx, + int *lenp) +{ + const char *list, *end; + int length; + + list = fdt_getprop(fdt, nodeoffset, property, &length); + if (!list) { + if (lenp) + *lenp = length; + + return NULL; + } + + end = list + length; + + while (list < end) { + length = strnlen(list, end - list) + 1; + + /* Abort if the last string isn't properly NUL-terminated. */ + if (list + length > end) { + if (lenp) + *lenp = -FDT_ERR_BADVALUE; + + return NULL; + } + + if (idx == 0) { + if (lenp) + *lenp = length - 1; + + return list; + } + + list += length; + idx--; + } + + if (lenp) + *lenp = -FDT_ERR_NOTFOUND; + + return NULL; +} + +int fdt_node_check_compatible(const void *fdt, int nodeoffset, + const char *compatible) +{ + const void *prop; + int len; + + prop = fdt_getprop(fdt, nodeoffset, "compatible", &len); + if (!prop) + return len; + + return !fdt_stringlist_contains(prop, len, compatible); +} + +int fdt_node_offset_by_compatible(const void *fdt, int startoffset, + const char *compatible) +{ + int offset, err; + + FDT_RO_PROBE(fdt); + + /* FIXME: The algorithm here is pretty horrible: we scan each + * property of a node in fdt_node_check_compatible(), then if + * that didn't find what we want, we scan over them again + * making our way to the next node. Still it's the easiest to + * implement approach; performance can come later. */ + for (offset = fdt_next_node(fdt, startoffset, NULL); + offset >= 0; + offset = fdt_next_node(fdt, offset, NULL)) { + err = fdt_node_check_compatible(fdt, offset, compatible); + if ((err < 0) && (err != -FDT_ERR_NOTFOUND)) + return err; + else if (err == 0) + return offset; + } + + return offset; /* error from fdt_next_node() */ +} + +int fdt_check_full(const void *fdt, size_t bufsize) +{ + int err; + int num_memrsv; + int offset, nextoffset = 0; + uint32_t tag; + unsigned depth = 0; + const void *prop; + const char *propname; + + if (bufsize < FDT_V1_SIZE) + return -FDT_ERR_TRUNCATED; + err = fdt_check_header(fdt); + if (err != 0) + return err; + if (bufsize < fdt_totalsize(fdt)) + return -FDT_ERR_TRUNCATED; + + num_memrsv = fdt_num_mem_rsv(fdt); + if (num_memrsv < 0) + return num_memrsv; + + while (1) { + offset = nextoffset; + tag = fdt_next_tag(fdt, offset, &nextoffset); + + if (nextoffset < 0) + return nextoffset; + + switch (tag) { + case FDT_NOP: + break; + + case FDT_END: + if (depth != 0) + return -FDT_ERR_BADSTRUCTURE; + return 0; + + case FDT_BEGIN_NODE: + depth++; + if (depth > INT_MAX) + return -FDT_ERR_BADSTRUCTURE; + break; + + case FDT_END_NODE: + if (depth == 0) + return -FDT_ERR_BADSTRUCTURE; + depth--; + break; + + case FDT_PROP: + prop = fdt_getprop_by_offset(fdt, offset, &propname, + &err); + if (!prop) + return err; + break; + + default: + return -FDT_ERR_INTERNAL; + } + } +} diff --git a/payloads/libpayload/libfdt/fdt_rw.c b/payloads/libpayload/libfdt/fdt_rw.c new file mode 100644 index 0000000..941b364 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_rw.c @@ -0,0 +1,502 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +static int fdt_blocks_misordered_(const void *fdt, + int mem_rsv_size, int struct_size) +{ + return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8)) + || (fdt_off_dt_struct(fdt) < (fdt_off_mem_rsvmap(fdt) + mem_rsv_size)) + || (fdt_off_dt_strings(fdt) < (fdt_off_dt_struct(fdt) + struct_size)) + || (fdt_totalsize(fdt) < (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt))); +} + +static int fdt_rw_probe_(void *fdt) +{ + FDT_RO_PROBE(fdt); + + if (fdt_version(fdt) < 17) + return -FDT_ERR_BADVERSION; + if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry), + fdt_size_dt_struct(fdt))) + return -FDT_ERR_BADLAYOUT; + if (fdt_version(fdt) > 17) + fdt_set_version(fdt, 17); + + return 0; +} + +#define FDT_RW_PROBE(fdt) \ + { \ + int err_; \ + if ((err_ = fdt_rw_probe_(fdt)) != 0) \ + return err_; \ + } + +static inline int fdt_data_size_(void *fdt) +{ + return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt); +} + +static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen) +{ + char *p = splicepoint; + char *end = (char *)fdt + fdt_data_size_(fdt); + + if (((p + oldlen) < p) || ((p + oldlen) > end)) + return -FDT_ERR_BADOFFSET; + if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt)) + return -FDT_ERR_BADOFFSET; + if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt))) + return -FDT_ERR_NOSPACE; + memmove(p + newlen, p + oldlen, end - p - oldlen); + return 0; +} + +static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p, + int oldn, int newn) +{ + int delta = (newn - oldn) * sizeof(*p); + int err; + err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p)); + if (err) + return err; + fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta); + fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta); + return 0; +} + +static int fdt_splice_struct_(void *fdt, void *p, + int oldlen, int newlen) +{ + int delta = newlen - oldlen; + int err; + + if ((err = fdt_splice_(fdt, p, oldlen, newlen))) + return err; + + fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta); + fdt_set_off_dt_strings(fdt, fdt_off_dt_strings(fdt) + delta); + return 0; +} + +static int fdt_splice_string_(void *fdt, int newlen) +{ + void *p = (char *)fdt + + fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt); + int err; + + if ((err = fdt_splice_(fdt, p, 0, newlen))) + return err; + + fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen); + return 0; +} + +static int fdt_find_add_string_(void *fdt, const char *s) +{ + char *strtab = (char *)fdt + fdt_off_dt_strings(fdt); + const char *p; + char *new; + int len = strlen(s) + 1; + int err; + + p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s); + if (p) + /* found it */ + return (p - strtab); + + new = strtab + fdt_size_dt_strings(fdt); + err = fdt_splice_string_(fdt, len); + if (err) + return err; + + memcpy(new, s, len); + return (new - strtab); +} + +int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size) +{ + struct fdt_reserve_entry *re; + int err; + + FDT_RW_PROBE(fdt); + + re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt)); + err = fdt_splice_mem_rsv_(fdt, re, 0, 1); + if (err) + return err; + + re->address = cpu_to_fdt64(address); + re->size = cpu_to_fdt64(size); + return 0; +} + +int fdt_del_mem_rsv(void *fdt, int n) +{ + struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n); + + FDT_RW_PROBE(fdt); + + if (n >= fdt_num_mem_rsv(fdt)) + return -FDT_ERR_NOTFOUND; + + return fdt_splice_mem_rsv_(fdt, re, 1, 0); +} + +static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name, + int len, struct fdt_property **prop) +{ + int oldlen; + int err; + + *prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen); + if (!*prop) + return oldlen; + + if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen), + FDT_TAGALIGN(len)))) + return err; + + (*prop)->len = cpu_to_fdt32(len); + return 0; +} + +static int fdt_add_property_(void *fdt, int nodeoffset, const char *name, + int len, struct fdt_property **prop) +{ + int proplen; + int nextoffset; + int namestroff; + int err; + + if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0) + return nextoffset; + + namestroff = fdt_find_add_string_(fdt, name); + if (namestroff < 0) + return namestroff; + + *prop = fdt_offset_ptr_w_(fdt, nextoffset); + proplen = sizeof(**prop) + FDT_TAGALIGN(len); + + err = fdt_splice_struct_(fdt, *prop, 0, proplen); + if (err) + return err; + + (*prop)->tag = cpu_to_fdt32(FDT_PROP); + (*prop)->nameoff = cpu_to_fdt32(namestroff); + (*prop)->len = cpu_to_fdt32(len); + return 0; +} + +int fdt_set_name(void *fdt, int nodeoffset, const char *name) +{ + char *namep; + int oldlen, newlen; + int err; + + FDT_RW_PROBE(fdt); + + namep = (char *)(uintptr_t)fdt_get_name(fdt, nodeoffset, &oldlen); + if (!namep) + return oldlen; + + newlen = strlen(name); + + err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen + 1), + FDT_TAGALIGN(newlen + 1)); + if (err) + return err; + + memcpy(namep, name, newlen + 1); + return 0; +} + +int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name, + int len, void **prop_data) +{ + struct fdt_property *prop; + int err; + + FDT_RW_PROBE(fdt); + + err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop); + if (err == -FDT_ERR_NOTFOUND) + err = fdt_add_property_(fdt, nodeoffset, name, len, &prop); + if (err) + return err; + + *prop_data = prop->data; + return 0; +} + +int fdt_setprop(void *fdt, int nodeoffset, const char *name, + const void *val, int len) +{ + void *prop_data; + int err; + + err = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data); + if (err) + return err; + + if (len) + memcpy(prop_data, val, len); + return 0; +} + +int fdt_appendprop(void *fdt, int nodeoffset, const char *name, + const void *val, int len) +{ + struct fdt_property *prop; + int err, oldlen, newlen; + + FDT_RW_PROBE(fdt); + + prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen); + if (prop) { + newlen = len + oldlen; + err = fdt_splice_struct_(fdt, prop->data, + FDT_TAGALIGN(oldlen), + FDT_TAGALIGN(newlen)); + if (err) + return err; + prop->len = cpu_to_fdt32(newlen); + memcpy(prop->data + oldlen, val, len); + } else { + err = fdt_add_property_(fdt, nodeoffset, name, len, &prop); + if (err) + return err; + memcpy(prop->data, val, len); + } + return 0; +} + +int fdt_delprop(void *fdt, int nodeoffset, const char *name) +{ + struct fdt_property *prop; + int len, proplen; + + FDT_RW_PROBE(fdt); + + prop = fdt_get_property_w(fdt, nodeoffset, name, &len); + if (!prop) + return len; + + proplen = sizeof(*prop) + FDT_TAGALIGN(len); + return fdt_splice_struct_(fdt, prop, proplen, 0); +} + +int fdt_add_subnode_namelen(void *fdt, int parentoffset, + const char *name, int namelen) +{ + struct fdt_node_header *nh; + int offset, nextoffset; + int nodelen; + int err; + uint32_t tag; + fdt32_t *endtag; + + FDT_RW_PROBE(fdt); + + offset = fdt_subnode_offset_namelen(fdt, parentoffset, name, namelen); + if (offset >= 0) + return -FDT_ERR_EXISTS; + else if (offset != -FDT_ERR_NOTFOUND) + return offset; + + /* Try to place the new node after the parent's properties */ + fdt_next_tag(fdt, parentoffset, &nextoffset); /* skip the BEGIN_NODE */ + do { + offset = nextoffset; + tag = fdt_next_tag(fdt, offset, &nextoffset); + } while ((tag == FDT_PROP) || (tag == FDT_NOP)); + + nh = fdt_offset_ptr_w_(fdt, offset); + nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen + 1) + FDT_TAGSIZE; + + err = fdt_splice_struct_(fdt, nh, 0, nodelen); + if (err) + return err; + + nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE); + memset(nh->name, 0, FDT_TAGALIGN(namelen + 1)); + memcpy(nh->name, name, namelen); + endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE); + *endtag = cpu_to_fdt32(FDT_END_NODE); + + return offset; +} + +int fdt_add_subnode(void *fdt, int parentoffset, const char *name) +{ + return fdt_add_subnode_namelen(fdt, parentoffset, name, strlen(name)); +} + +int fdt_del_node(void *fdt, int nodeoffset) +{ + int endoffset; + + FDT_RW_PROBE(fdt); + + endoffset = fdt_node_end_offset_(fdt, nodeoffset); + if (endoffset < 0) + return endoffset; + + return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset), + endoffset - nodeoffset, 0); +} + +static void fdt_packblocks_(const char *old, char *new, + int mem_rsv_size, int struct_size) +{ + int mem_rsv_off, struct_off, strings_off; + + mem_rsv_off = FDT_ALIGN(sizeof(struct fdt_header), 8); + struct_off = mem_rsv_off + mem_rsv_size; + strings_off = struct_off + struct_size; + + memmove(new + mem_rsv_off, old + fdt_off_mem_rsvmap(old), mem_rsv_size); + fdt_set_off_mem_rsvmap(new, mem_rsv_off); + + memmove(new + struct_off, old + fdt_off_dt_struct(old), struct_size); + fdt_set_off_dt_struct(new, struct_off); + fdt_set_size_dt_struct(new, struct_size); + + memmove(new + strings_off, old + fdt_off_dt_strings(old), + fdt_size_dt_strings(old)); + fdt_set_off_dt_strings(new, strings_off); + fdt_set_size_dt_strings(new, fdt_size_dt_strings(old)); +} + +int fdt_open_into(const void *fdt, void *buf, int bufsize) +{ + int err; + int mem_rsv_size, struct_size; + int newsize; + const char *fdtstart = fdt; + const char *fdtend = fdtstart + fdt_totalsize(fdt); + char *tmp; + + FDT_RO_PROBE(fdt); + + mem_rsv_size = (fdt_num_mem_rsv(fdt) + 1) + * sizeof(struct fdt_reserve_entry); + + if (fdt_version(fdt) >= 17) { + struct_size = fdt_size_dt_struct(fdt); + } else { + struct_size = 0; + while (fdt_next_tag(fdt, struct_size, &struct_size) != FDT_END) + ; + if (struct_size < 0) + return struct_size; + } + + if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) { + /* no further work necessary */ + err = fdt_move(fdt, buf, bufsize); + if (err) + return err; + fdt_set_version(buf, 17); + fdt_set_size_dt_struct(buf, struct_size); + fdt_set_totalsize(buf, bufsize); + return 0; + } + + /* Need to reorder */ + newsize = FDT_ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size + + struct_size + fdt_size_dt_strings(fdt); + + if (bufsize < newsize) + return -FDT_ERR_NOSPACE; + + /* First attempt to build converted tree at beginning of buffer */ + tmp = buf; + /* But if that overlaps with the old tree... */ + if (((tmp + newsize) > fdtstart) && (tmp < fdtend)) { + /* Try right after the old tree instead */ + tmp = (char *)(uintptr_t)fdtend; + if ((tmp + newsize) > ((char *)buf + bufsize)) + return -FDT_ERR_NOSPACE; + } + + fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size); + memmove(buf, tmp, newsize); + + fdt_set_magic(buf, FDT_MAGIC); + fdt_set_totalsize(buf, bufsize); + fdt_set_version(buf, 17); + fdt_set_last_comp_version(buf, 16); + fdt_set_boot_cpuid_phys(buf, fdt_boot_cpuid_phys(fdt)); + + return 0; +} + +int fdt_pack(void *fdt) +{ + int mem_rsv_size; + + FDT_RW_PROBE(fdt); + + mem_rsv_size = (fdt_num_mem_rsv(fdt) + 1) + * sizeof(struct fdt_reserve_entry); + fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt)); + fdt_set_totalsize(fdt, fdt_data_size_(fdt)); + + return 0; +} diff --git a/payloads/libpayload/libfdt/fdt_strerror.c b/payloads/libpayload/libfdt/fdt_strerror.c new file mode 100644 index 0000000..39d58e6 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_strerror.c @@ -0,0 +1,104 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +struct fdt_errtabent { + const char *str; +}; + +#define FDT_ERRTABENT(val) \ + [(val)] = { \ + .str = #val, \ + } + +static struct fdt_errtabent fdt_errtable[] = { + FDT_ERRTABENT(FDT_ERR_NOTFOUND), + FDT_ERRTABENT(FDT_ERR_EXISTS), + FDT_ERRTABENT(FDT_ERR_NOSPACE), + + FDT_ERRTABENT(FDT_ERR_BADOFFSET), + FDT_ERRTABENT(FDT_ERR_BADPATH), + FDT_ERRTABENT(FDT_ERR_BADPHANDLE), + FDT_ERRTABENT(FDT_ERR_BADSTATE), + + FDT_ERRTABENT(FDT_ERR_TRUNCATED), + FDT_ERRTABENT(FDT_ERR_BADMAGIC), + FDT_ERRTABENT(FDT_ERR_BADVERSION), + FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE), + FDT_ERRTABENT(FDT_ERR_BADLAYOUT), + FDT_ERRTABENT(FDT_ERR_INTERNAL), + FDT_ERRTABENT(FDT_ERR_BADNCELLS), + FDT_ERRTABENT(FDT_ERR_BADVALUE), + FDT_ERRTABENT(FDT_ERR_BADOVERLAY), + FDT_ERRTABENT(FDT_ERR_NOPHANDLES), +}; +#define FDT_ERRTABSIZE (sizeof(fdt_errtable) / sizeof(fdt_errtable[0])) + +const char *fdt_strerror(int errval) +{ + if (errval > 0) + return "<valid offset/length>"; + else if (errval == 0) + return "<no error>"; + else if (errval > -FDT_ERRTABSIZE) { + const char *s = fdt_errtable[-errval].str; + + if (s) + return s; + } + + return "<unknown error>"; +} diff --git a/payloads/libpayload/libfdt/fdt_sw.c b/payloads/libpayload/libfdt/fdt_sw.c new file mode 100644 index 0000000..c4e3f86 --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_sw.c @@ -0,0 +1,365 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +static int fdt_sw_probe_(void *fdt) +{ + if (fdt_magic(fdt) == FDT_MAGIC) + return -FDT_ERR_BADSTATE; + else if (fdt_magic(fdt) != FDT_SW_MAGIC) + return -FDT_ERR_BADMAGIC; + return 0; +} + +#define FDT_SW_PROBE(fdt) \ + { \ + int err; \ + if ((err = fdt_sw_probe_(fdt)) != 0) \ + return err; \ + } + +/* 'memrsv' state: Initial state after fdt_create() + * + * Allowed functions: + * fdt_add_reservmap_entry() + * fdt_finish_reservemap() [moves to 'struct' state] + */ +static int fdt_sw_probe_memrsv_(void *fdt) +{ + int err = fdt_sw_probe_(fdt); + if (err) + return err; + + if (fdt_off_dt_strings(fdt) != 0) + return -FDT_ERR_BADSTATE; + return 0; +} + +#define FDT_SW_PROBE_MEMRSV(fdt) \ + { \ + int err; \ + if ((err = fdt_sw_probe_memrsv_(fdt)) != 0) \ + return err; \ + } + +/* 'struct' state: Enter this state after fdt_finish_reservemap() + * + * Allowed functions: + * fdt_begin_node() + * fdt_end_node() + * fdt_property*() + * fdt_finish() [moves to 'complete' state] + */ +static int fdt_sw_probe_struct_(void *fdt) +{ + int err = fdt_sw_probe_(fdt); + if (err) + return err; + + if (fdt_off_dt_strings(fdt) != fdt_totalsize(fdt)) + return -FDT_ERR_BADSTATE; + return 0; +} + +#define FDT_SW_PROBE_STRUCT(fdt) \ + { \ + int err; \ + if ((err = fdt_sw_probe_struct_(fdt)) != 0) \ + return err; \ + } + +/* 'complete' state: Enter this state after fdt_finish() + * + * Allowed functions: none + */ + +static void *fdt_grab_space_(void *fdt, size_t len) +{ + int offset = fdt_size_dt_struct(fdt); + int spaceleft; + + spaceleft = fdt_totalsize(fdt) - fdt_off_dt_struct(fdt) + - fdt_size_dt_strings(fdt); + + if ((offset + len < offset) || (offset + len > spaceleft)) + return NULL; + + fdt_set_size_dt_struct(fdt, offset + len); + return fdt_offset_ptr_w_(fdt, offset); +} + +int fdt_create(void *buf, int bufsize) +{ + const size_t hdrsize = FDT_ALIGN(sizeof(struct fdt_header), + sizeof(struct fdt_reserve_entry)); + void *fdt = buf; + + if (bufsize < hdrsize) + return -FDT_ERR_NOSPACE; + + memset(buf, 0, bufsize); + + fdt_set_magic(fdt, FDT_SW_MAGIC); + fdt_set_version(fdt, FDT_LAST_SUPPORTED_VERSION); + fdt_set_last_comp_version(fdt, FDT_FIRST_SUPPORTED_VERSION); + fdt_set_totalsize(fdt, bufsize); + + fdt_set_off_mem_rsvmap(fdt, hdrsize); + fdt_set_off_dt_struct(fdt, fdt_off_mem_rsvmap(fdt)); + fdt_set_off_dt_strings(fdt, 0); + + return 0; +} + +int fdt_resize(void *fdt, void *buf, int bufsize) +{ + size_t headsize, tailsize; + char *oldtail, *newtail; + + FDT_SW_PROBE(fdt); + + headsize = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt); + tailsize = fdt_size_dt_strings(fdt); + + if ((headsize + tailsize) > fdt_totalsize(fdt)) + return -FDT_ERR_INTERNAL; + + if ((headsize + tailsize) > bufsize) + return -FDT_ERR_NOSPACE; + + oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize; + newtail = (char *)buf + bufsize - tailsize; + + /* Two cases to avoid clobbering data if the old and new + * buffers partially overlap */ + if (buf <= fdt) { + memmove(buf, fdt, headsize); + memmove(newtail, oldtail, tailsize); + } else { + memmove(newtail, oldtail, tailsize); + memmove(buf, fdt, headsize); + } + + fdt_set_totalsize(buf, bufsize); + if (fdt_off_dt_strings(buf)) + fdt_set_off_dt_strings(buf, bufsize); + + return 0; +} + +int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size) +{ + struct fdt_reserve_entry *re; + int offset; + + FDT_SW_PROBE_MEMRSV(fdt); + + offset = fdt_off_dt_struct(fdt); + if ((offset + sizeof(*re)) > fdt_totalsize(fdt)) + return -FDT_ERR_NOSPACE; + + re = (struct fdt_reserve_entry *)((char *)fdt + offset); + re->address = cpu_to_fdt64(addr); + re->size = cpu_to_fdt64(size); + + fdt_set_off_dt_struct(fdt, offset + sizeof(*re)); + + return 0; +} + +int fdt_finish_reservemap(void *fdt) +{ + int err = fdt_add_reservemap_entry(fdt, 0, 0); + + if (err) + return err; + + fdt_set_off_dt_strings(fdt, fdt_totalsize(fdt)); + return 0; +} + +int fdt_begin_node(void *fdt, const char *name) +{ + struct fdt_node_header *nh; + int namelen; + + FDT_SW_PROBE_STRUCT(fdt); + + namelen = strlen(name) + 1; + nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen)); + if (!nh) + return -FDT_ERR_NOSPACE; + + nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE); + memcpy(nh->name, name, namelen); + return 0; +} + +int fdt_end_node(void *fdt) +{ + fdt32_t *en; + + FDT_SW_PROBE_STRUCT(fdt); + + en = fdt_grab_space_(fdt, FDT_TAGSIZE); + if (!en) + return -FDT_ERR_NOSPACE; + + *en = cpu_to_fdt32(FDT_END_NODE); + return 0; +} + +static int fdt_find_add_string_(void *fdt, const char *s) +{ + char *strtab = (char *)fdt + fdt_totalsize(fdt); + const char *p; + int strtabsize = fdt_size_dt_strings(fdt); + int len = strlen(s) + 1; + int struct_top, offset; + + p = fdt_find_string_(strtab - strtabsize, strtabsize, s); + if (p) + return p - strtab; + + /* Add it */ + offset = -strtabsize - len; + struct_top = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt); + if (fdt_totalsize(fdt) + offset < struct_top) + return 0; /* no more room :( */ + + memcpy(strtab + offset, s, len); + fdt_set_size_dt_strings(fdt, strtabsize + len); + return offset; +} + +int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp) +{ + struct fdt_property *prop; + int nameoff; + + FDT_SW_PROBE_STRUCT(fdt); + + nameoff = fdt_find_add_string_(fdt, name); + if (nameoff == 0) + return -FDT_ERR_NOSPACE; + + prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len)); + if (!prop) + return -FDT_ERR_NOSPACE; + + prop->tag = cpu_to_fdt32(FDT_PROP); + prop->nameoff = cpu_to_fdt32(nameoff); + prop->len = cpu_to_fdt32(len); + *valp = prop->data; + return 0; +} + +int fdt_property(void *fdt, const char *name, const void *val, int len) +{ + void *ptr; + int ret; + + ret = fdt_property_placeholder(fdt, name, len, &ptr); + if (ret) + return ret; + memcpy(ptr, val, len); + return 0; +} + +int fdt_finish(void *fdt) +{ + char *p = (char *)fdt; + fdt32_t *end; + int oldstroffset, newstroffset; + uint32_t tag; + int offset, nextoffset; + + FDT_SW_PROBE_STRUCT(fdt); + + /* Add terminator */ + end = fdt_grab_space_(fdt, sizeof(*end)); + if (!end) + return -FDT_ERR_NOSPACE; + *end = cpu_to_fdt32(FDT_END); + + /* Relocate the string table */ + oldstroffset = fdt_totalsize(fdt) - fdt_size_dt_strings(fdt); + newstroffset = fdt_off_dt_struct(fdt) + fdt_size_dt_struct(fdt); + memmove(p + newstroffset, p + oldstroffset, fdt_size_dt_strings(fdt)); + fdt_set_off_dt_strings(fdt, newstroffset); + + /* Walk the structure, correcting string offsets */ + offset = 0; + while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) { + if (tag == FDT_PROP) { + struct fdt_property *prop = + fdt_offset_ptr_w_(fdt, offset); + int nameoff; + + nameoff = fdt32_to_cpu(prop->nameoff); + nameoff += fdt_size_dt_strings(fdt); + prop->nameoff = cpu_to_fdt32(nameoff); + } + offset = nextoffset; + } + if (nextoffset < 0) + return nextoffset; + + /* Finally, adjust the header */ + fdt_set_totalsize(fdt, newstroffset + fdt_size_dt_strings(fdt)); + fdt_set_magic(fdt, FDT_MAGIC); + return 0; +} diff --git a/payloads/libpayload/libfdt/fdt_wip.c b/payloads/libpayload/libfdt/fdt_wip.c new file mode 100644 index 0000000..534c1cb --- /dev/null +++ b/payloads/libpayload/libfdt/fdt_wip.c @@ -0,0 +1,139 @@ +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * + * libfdt is dual licensed: you can use it either under the terms of + * the GPL, or the BSD license, at your option. + * + * a) This library 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; either version 2 of the + * License, or (at your option) any later version. + * + * This library 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 library; if not, write to the Free + * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Alternatively, + * + * b) Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "libfdt_env.h" + +#include <fdt.h> +#include <libfdt.h> + +#include "libfdt_internal.h" + +int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset, + const char *name, int namelen, + uint32_t idx, const void *val, + int len) +{ + void *propval; + int proplen; + + propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen, + &proplen); + if (!propval) + return proplen; + + if (proplen < (len + idx)) + return -FDT_ERR_NOSPACE; + + memcpy((char *)propval + idx, val, len); + return 0; +} + +int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, + const void *val, int len) +{ + const void *propval; + int proplen; + + propval = fdt_getprop(fdt, nodeoffset, name, &proplen); + if (!propval) + return proplen; + + if (proplen != len) + return -FDT_ERR_NOSPACE; + + return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name, + strlen(name), 0, + val, len); +} + +static void fdt_nop_region_(void *start, int len) +{ + fdt32_t *p; + + for (p = start; (char *)p < ((char *)start + len); p++) + *p = cpu_to_fdt32(FDT_NOP); +} + +int fdt_nop_property(void *fdt, int nodeoffset, const char *name) +{ + struct fdt_property *prop; + int len; + + prop = fdt_get_property_w(fdt, nodeoffset, name, &len); + if (!prop) + return len; + + fdt_nop_region_(prop, len + sizeof(*prop)); + + return 0; +} + +int fdt_node_end_offset_(void *fdt, int offset) +{ + int depth = 0; + + while ((offset >= 0) && (depth >= 0)) + offset = fdt_next_node(fdt, offset, &depth); + + return offset; +} + +int fdt_nop_node(void *fdt, int nodeoffset) +{ + int endoffset; + + endoffset = fdt_node_end_offset_(fdt, nodeoffset); + if (endoffset < 0) + return endoffset; + + fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0), + endoffset - nodeoffset); + return 0; +} diff --git a/payloads/libpayload/libfdt/version.lds b/payloads/libpayload/libfdt/version.lds new file mode 100644 index 0000000..9f5d708 --- /dev/null +++ b/payloads/libpayload/libfdt/version.lds @@ -0,0 +1,71 @@ +LIBFDT_1.2 { + global: + fdt_next_node; + fdt_check_header; + fdt_move; + fdt_string; + fdt_num_mem_rsv; + fdt_get_mem_rsv; + fdt_subnode_offset_namelen; + fdt_subnode_offset; + fdt_path_offset_namelen; + fdt_path_offset; + fdt_get_name; + fdt_get_property_namelen; + fdt_get_property; + fdt_getprop_namelen; + fdt_getprop; + fdt_get_phandle; + fdt_get_alias_namelen; + fdt_get_alias; + fdt_get_path; + fdt_supernode_atdepth_offset; + fdt_node_depth; + fdt_parent_offset; + fdt_node_offset_by_prop_value; + fdt_node_offset_by_phandle; + fdt_node_check_compatible; + fdt_node_offset_by_compatible; + fdt_setprop_inplace; + fdt_nop_property; + fdt_nop_node; + fdt_create; + fdt_add_reservemap_entry; + fdt_finish_reservemap; + fdt_begin_node; + fdt_property; + fdt_end_node; + fdt_finish; + fdt_open_into; + fdt_pack; + fdt_add_mem_rsv; + fdt_del_mem_rsv; + fdt_set_name; + fdt_setprop; + fdt_delprop; + fdt_add_subnode_namelen; + fdt_add_subnode; + fdt_del_node; + fdt_strerror; + fdt_offset_ptr; + fdt_next_tag; + fdt_appendprop; + fdt_create_empty_tree; + fdt_first_property_offset; + fdt_get_property_by_offset; + fdt_getprop_by_offset; + fdt_next_property_offset; + fdt_first_subnode; + fdt_next_subnode; + fdt_address_cells; + fdt_size_cells; + fdt_stringlist_contains; + fdt_stringlist_count; + fdt_stringlist_search; + fdt_stringlist_get; + fdt_resize; + fdt_overlay_apply; + fdt_get_string; + local: + *; +}; -- To view, visit https://review.coreboot.org/c/coreboot/+/31355 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: If48195e748f958d7076b1635a45182c447ea4aeb Gerrit-Change-Number: 31355 Gerrit-PatchSet: 1 Gerrit-Owner: Philipp Hug <philipp(a)hug.cx> Gerrit-Reviewer: Martin Roth <martinroth(a)google.com> Gerrit-Reviewer: Patrick Georgi <pgeorgi(a)google.com> Gerrit-Reviewer: Philipp Hug <philipp(a)hug.cx> Gerrit-MessageType: newchange

5 5

Change in ...coreboot[master]: Include required files to compile in postcar to skip ramstage
by Subrata Banik (Code Review) 07 Aug '23

07 Aug '23

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/32675 Change subject: Include required files to compile in postcar to skip ramstage ...................................................................... Include required files to compile in postcar to skip ramstage Change-Id: I5269d562baf8f216e17794ffceb8f97061483515 Signed-off-by: Subrata Banik <subrata.banik(a)intel.com> --- M src/arch/x86/Makefile.inc A src/arch/x86/c_postcar_start.S M src/arch/x86/exit_car.S M src/commonlib/Makefile.inc M src/cpu/intel/microcode/Makefile.inc M src/cpu/intel/turbo/Makefile.inc M src/cpu/x86/Makefile.inc M src/cpu/x86/lapic/Makefile.inc M src/cpu/x86/mtrr/Makefile.inc M src/cpu/x86/name/Makefile.inc M src/cpu/x86/smm/Makefile.inc M src/device/Makefile.inc M src/drivers/elog/Makefile.inc M src/drivers/intel/fsp2_0/Makefile.inc M src/drivers/intel/fsp2_0/ppi/Makefile.inc M src/drivers/intel/gma/Makefile.inc M src/drivers/mrc_cache/Makefile.inc M src/drivers/pc80/pc/Makefile.inc M src/ec/google/chromeec/Makefile.inc M src/lib/Makefile.inc M src/security/vboot/Makefile.inc M src/soc/intel/common/Makefile.inc M src/vendorcode/google/chromeos/Makefile.inc 23 files changed, 378 insertions(+), 1 deletion(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/75/32675/1 diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index 6e4ee76..63e84ca 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -283,6 +283,20 @@ postcar-y += postcar.c postcar-$(CONFIG_COLLECT_TIMESTAMPS_TSC) += timestamp.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpigen.c +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpigen_dsm.c +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpi_device.c +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpi_pld.c +postcar-y += c_postcar_start.S +postcar-y += cpu.c +postcar-$(CONFIG_IOAPIC) += ioapic.c +postcar-$(CONFIG_GENERATE_SMBIOS_TABLES) += smbios.c +postcar-y += tables.c +postcar-$(CONFIG_HAVE_ACPI_RESUME) += wakeup.S +endif + LDFLAGS_postcar += -Map $(objcbfs)/postcar.map $(objcbfs)/postcar.debug: $$(postcar-objs) diff --git a/src/arch/x86/c_postcar_start.S b/src/arch/x86/c_postcar_start.S new file mode 100644 index 0000000..70c38b5 --- /dev/null +++ b/src/arch/x86/c_postcar_start.S @@ -0,0 +1,216 @@ +/* + * This file is part of the coreboot project. + * + * 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 <cpu/x86/post_code.h> + +/* Place the stack in the bss section. It's not necessary to define it in the + * the linker script. */ + .section .bss, "aw", @nobits +.global _stack +.global _estack + +/* Stack alignment is not enforced with rmodule loader, reserve one + * extra CPU such that alignment can be enforced on entry. */ +.align CONFIG_STACK_SIZE +_stack: +.space (CONFIG_MAX_CPUS+1)*CONFIG_STACK_SIZE +_estack: +#if CONFIG(COOP_MULTITASKING) +.global thread_stacks +thread_stacks: +.space CONFIG_STACK_SIZE*CONFIG_NUM_THREADS +#endif + + .section ".text._start", "ax", @progbits +#ifdef __x86_64__ + .code64 +#else + .code32 +#endif + .globl cstart +cstart: + cli + lgdt %cs:gdtaddr +#ifndef __x86_64__ + ljmp $0x10, $1f +#endif +1: movl $0x18, %eax + movl %eax, %ds + movl %eax, %es + movl %eax, %ss + movl %eax, %fs + movl %eax, %gs +#ifdef __x86_64__ + mov $0x48, %ecx + call SetCodeSelector +#endif + + post_code(POST_ENTRY_C_START) /* post 13 */ + + cld + + /** poison the stack. Code should not count on the + * stack being full of zeros. This stack poisoning + * recently uncovered a bug in the broadcast SIPI + * code. + */ + leal _stack, %edi + movl $_estack, %ecx + subl %edi, %ecx + shrl $2, %ecx /* it is 32 bit aligned, right? */ + movl $0xDEADBEEF, %eax + rep + stosl + + /* Set new stack with enforced alignment. */ + movl $_estack, %esp + andl $(~(CONFIG_STACK_SIZE-1)), %esp + +#if CONFIG(COOP_MULTITASKING) + /* Push the thread pointer. */ + push $0 +#endif + /* Push the CPU index and struct CPU */ + push $0 + push $0 + + /* + * Now we are finished. Memory is up, data is copied and + * bss is cleared. Now we call the main routine and + * let it do the rest. + */ + post_code(POST_PRE_HARDWAREMAIN) /* post fe */ + + andl $0xFFFFFFF0, %esp + + call main + /* NOTREACHED */ +.Lhlt: + post_code(POST_DEAD_CODE) /* post ee */ + hlt + jmp .Lhlt + + .globl gdt, gdt_end + +gdtaddr: + .word gdt_end - gdt - 1 +#ifdef __x86_64__ + .quad gdt +#else + .long gdt /* we know the offset */ +#endif + + .data + + /* This is the gdt for GCC part of coreboot. + * It is different from the gdt in ROMCC/ASM part of coreboot + * which is defined in entry32.inc + * + * When the machine is initially started, we use a very simple + * gdt from ROM (that in entry32.inc) which only contains those + * entries we need for protected mode. + * + * When we're executing code from RAM, we want to do more complex + * stuff, like initializing PCI option ROMs in real mode, or doing + * a resume from a suspend to RAM. + */ +gdt: + /* selgdt 0, unused */ + .word 0x0000, 0x0000 /* dummy */ + .byte 0x00, 0x00, 0x00, 0x00 + + /* selgdt 8, unused */ + .word 0x0000, 0x0000 /* dummy */ + .byte 0x00, 0x00, 0x00, 0x00 + + /* selgdt 0x10, flat code segment */ + .word 0xffff, 0x0000 + .byte 0x00, 0x9b, 0xcf, 0x00 /* G=1 and 0x0f, So we get 4Gbytes for + * limit + */ + + /* selgdt 0x18, flat data segment */ + .word 0xffff, 0x0000 +#ifdef __x86_64__ + .byte 0x00, 0x92, 0xcf, 0x00 +#else + .byte 0x00, 0x93, 0xcf, 0x00 +#endif + + /* selgdt 0x20, unused */ + .word 0x0000, 0x0000 /* dummy */ + .byte 0x00, 0x00, 0x00, 0x00 + + /* The next two entries are used for executing VGA option ROMs */ + + /* selgdt 0x28 16 bit 64k code at 0x00000000 */ + .word 0xffff, 0x0000 + .byte 0, 0x9a, 0, 0 + + /* selgdt 0x30 16 bit 64k data at 0x00000000 */ + .word 0xffff, 0x0000 + .byte 0, 0x92, 0, 0 + + /* The next two entries are used for ACPI S3 RESUME */ + + /* selgdt 0x38, flat data segment 16 bit */ + .word 0x0000, 0x0000 /* dummy */ + .byte 0x00, 0x93, 0x8f, 0x00 /* G=1 and 0x0f, So we get 4Gbytes for + * limit + */ + + /* selgdt 0x40, flat code segment 16 bit */ + .word 0xffff, 0x0000 + .byte 0x00, 0x9b, 0x8f, 0x00 /* G=1 and 0x0f, So we get 4Gbytes for + * limit + */ + +#ifdef __x86_64__ + /* selgdt 0x48, flat x64 code segment */ + .word 0xffff, 0x0000 + .byte 0x00, 0x9b, 0xaf, 0x00 +#endif +gdt_end: + + .section ".text._start", "ax", @progbits +#ifdef __x86_64__ +SetCodeSelector: + # save rsp because iret will align it to a 16 byte boundary + mov %rsp, %rdx + + # use iret to jump to a 64-bit offset in a new code segment + # iret will pop cs:rip, flags, then ss:rsp + mov %ss, %ax # need to push ss.. + push %rax # push ss instuction not valid in x64 mode, + # so use ax + push %rsp + pushfq + push %rcx # cx is code segment selector from caller + mov $setCodeSelectorLongJump, %rax + push %rax + + # the iret will continue at next instruction, with the new cs value + # loaded + iretq + +setCodeSelectorLongJump: + # restore rsp, it might not have been 16-byte aligned on entry + mov %rdx, %rsp + ret + + .previous +.code64 +#else + .previous +.code32 +#endif diff --git a/src/arch/x86/exit_car.S b/src/arch/x86/exit_car.S index 769a758..234c716 100644 --- a/src/arch/x86/exit_car.S +++ b/src/arch/x86/exit_car.S @@ -126,6 +126,9 @@ /* Align stack to 16 bytes at call instruction. */ andl $0xfffffff0, %esp +#if CONFIG(SKIP_RAMSTAGE) + call cstart +#endif /* Call into main for postcar. */ call main /* Should never return. */ diff --git a/src/commonlib/Makefile.inc b/src/commonlib/Makefile.inc index b6e8913..1865be5 100644 --- a/src/commonlib/Makefile.inc +++ b/src/commonlib/Makefile.inc @@ -38,3 +38,8 @@ postcar-y += lz4_wrapper.c ramstage-y += sort.c + +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_PLATFORM_USES_FSP2_0) += fsp_relocate.c +postcar-y += sort.c +endif diff --git a/src/cpu/intel/microcode/Makefile.inc b/src/cpu/intel/microcode/Makefile.inc index 2df1d5e..922d340 100644 --- a/src/cpu/intel/microcode/Makefile.inc +++ b/src/cpu/intel/microcode/Makefile.inc @@ -3,3 +3,6 @@ ramstage-$(CONFIG_SUPPORT_CPU_UCODE_IN_CBFS) += microcode.c romstage-$(CONFIG_SUPPORT_CPU_UCODE_IN_CBFS) += microcode.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_SUPPORT_CPU_UCODE_IN_CBFS) += microcode.c +endif \ No newline at end of file diff --git a/src/cpu/intel/turbo/Makefile.inc b/src/cpu/intel/turbo/Makefile.inc index 48ec55d..68b46c7 100644 --- a/src/cpu/intel/turbo/Makefile.inc +++ b/src/cpu/intel/turbo/Makefile.inc @@ -1 +1,2 @@ +postcar-$(CONFIG_SKIP_RAMSTAGE) += turbo.c ramstage-y += turbo.c diff --git a/src/cpu/x86/Makefile.inc b/src/cpu/x86/Makefile.inc index 3e8a664..e68f21e 100644 --- a/src/cpu/x86/Makefile.inc +++ b/src/cpu/x86/Makefile.inc @@ -37,3 +37,29 @@ $(call src-to-obj,ramstage,$(SIPI_BIN).manual): $(SIPI_BIN) @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" cd $(dir $<); $(OBJCOPY_rmodules_$(ARCH-ramstage-y)) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) + +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_PARALLEL_MP) += mp_init.c +postcar-y += backup_default_smm.c + +ifeq ($(CONFIG_PARALLEL_MP),y) +postcar-srcs += $(SIPI_BIN).manual +endif +rmodules_$(ARCH-postcar-y)-$(CONFIG_PARALLEL_MP) += sipi_vector.S + +$(SIPI_DOTO): $(call src-to-obj,rmodules_$(ARCH-postcar-y),src/cpu/x86/sipi_vector.S) + $(CC_rmodules_$(ARCH-postcar-y)) $(CFLAGS_rmodules_$(ARCH-postcar-y)) -nostdlib -r -o $@ $^ + +ifeq ($(CONFIG_ARCH_POSTCAR_X86_32),y) +$(eval $(call rmodule_link,$(SIPI_ELF), $(SIPI_DOTO), 0,x86_32)) +else +$(eval $(call rmodule_link,$(SIPI_ELF), $(SIPI_DOTO), 0,x86_64)) +endif + +$(SIPI_BIN): $(SIPI_RMOD) + $(OBJCOPY_postcar) -O binary $< $@ + +$(call src-to-obj,postcar,$(SIPI_BIN).manual): $(SIPI_BIN) + @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" + cd $(dir $<); $(OBJCOPY_rmodules_$(ARCH-postcar-y)) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) +endif diff --git a/src/cpu/x86/lapic/Makefile.inc b/src/cpu/x86/lapic/Makefile.inc index 9454f8f..a6a59c7 100644 --- a/src/cpu/x86/lapic/Makefile.inc +++ b/src/cpu/x86/lapic/Makefile.inc @@ -1,4 +1,5 @@ ramstage-y += lapic.c +postcar-$(CONFIG_SKIP_RAMSTAGE) += lapic.c ramstage-y += lapic_cpu_init.c ramstage-$(CONFIG_SMP) += secondary.S romstage-$(CONFIG_UDELAY_LAPIC) += apic_timer.c diff --git a/src/cpu/x86/mtrr/Makefile.inc b/src/cpu/x86/mtrr/Makefile.inc index caa6e9c..47ba4c2 100644 --- a/src/cpu/x86/mtrr/Makefile.inc +++ b/src/cpu/x86/mtrr/Makefile.inc @@ -1,4 +1,5 @@ ramstage-y += mtrr.c +postcar-$(CONFIG_SKIP_RAMSTAGE) += mtrr.c romstage-y += earlymtrr.c bootblock-y += earlymtrr.c diff --git a/src/cpu/x86/name/Makefile.inc b/src/cpu/x86/name/Makefile.inc index 5dba1a2..e1515496 100644 --- a/src/cpu/x86/name/Makefile.inc +++ b/src/cpu/x86/name/Makefile.inc @@ -14,3 +14,4 @@ ## ramstage-y += name.c +postcar-$(CONFIG_SKIP_RAMSTAGE) += name.c diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc index 32f5ea7..7bcd10e 100644 --- a/src/cpu/x86/smm/Makefile.inc +++ b/src/cpu/x86/smm/Makefile.inc @@ -14,10 +14,16 @@ ## ramstage-y += smm_module_loader.c +postcar-$(CONFIG_SKIP_RAMSTAGE) += smm_module_loader.c ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y) $(eval $(call create_class_compiler,smm,x86_32)) $(eval $(call create_class_compiler,smmstub,x86_32)) +#if CONFIG(SKIP_RAMSTAGE) +else ifeq ($(CONFIG_ARCH_POSTCAR_X86_32),y) +$(eval $(call create_class_compiler,smm,x86_32)) +$(eval $(call create_class_compiler,smmstub,x86_32)) +#endif else $(eval $(call create_class_compiler,smm,x86_64)) $(eval $(call create_class_compiler,smmstub,x86_64)) @@ -36,6 +42,12 @@ @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" cd $(dir $<); $(OBJCOPY_smm) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +$(call src-to-obj,postcar,$(obj)/cpu/x86/smm/smm.manual): $(obj)/smm/smm + @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" + cd $(dir $<); $(OBJCOPY_smm) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) +endif + ifeq ($(CONFIG_SMM_TSEG),y) smmstub-y += smm_stub.S @@ -45,6 +57,11 @@ ramstage-srcs += $(obj)/cpu/x86/smm/smm.manual ramstage-srcs += $(obj)/cpu/x86/smm/smmstub.manual +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-srcs += $(obj)/cpu/x86/smm/smm.manual +postcar-srcs += $(obj)/cpu/x86/smm/smmstub.manual +endif + # SMM Stub Module. The stub is used as a trampoline for relocation and normal # SMM handling. $(obj)/smmstub/smmstub.o: $$(smmstub-objs) @@ -53,6 +70,10 @@ # Link the SMM stub module with a 0-byte heap. ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y) $(eval $(call rmodule_link,$(obj)/smmstub/smmstub.elf, $(obj)/smmstub/smmstub.o, 0,x86_32)) +#if CONFIG(SKIP_RAMSTAGE) +else ifeq ($(CONFIG_ARCH_POSTCAR_X86_32),y) +$(eval $(call rmodule_link,$(obj)/smmstub/smmstub.elf, $(obj)/smmstub/smmstub.o, 0,x86_32)) +#endif else $(eval $(call rmodule_link,$(obj)/smmstub/smmstub.elf, $(obj)/smmstub/smmstub.o, 0,x86_64)) endif @@ -64,10 +85,20 @@ @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" cd $(dir $<); $(OBJCOPY_smmstub) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +$(call src-to-obj,postcar,$(obj)/cpu/x86/smm/smmstub.manual): $(obj)/smmstub/smmstub + @printf " OBJCOPY $(subst $(obj)/,,$(@))\n" + cd $(dir $<); $(OBJCOPY_smmstub) -I binary $(notdir $<) $(target-objcopy) $(abspath $@) +endif + # C-based SMM handler. ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y) $(eval $(call rmodule_link,$(obj)/smm/smm.elf, $(obj)/smm/smm.o, $(CONFIG_SMM_MODULE_HEAP_SIZE),x86_32)) +#if CONFIG(SKIP_RAMSTAGE) +else ifeq ($(CONFIG_ARCH_POSTCAR_X86_32),y) +$(eval $(call rmodule_link,$(obj)/smm/smm.elf, $(obj)/smm/smm.o, $(CONFIG_SMM_MODULE_HEAP_SIZE),x86_32)) +#endif else $(eval $(call rmodule_link,$(obj)/smm/smm.elf, $(obj)/smm/smm.o, $(CONFIG_SMM_MODULE_HEAP_SIZE),x86_64)) endif @@ -84,6 +115,9 @@ ifeq ($(CONFIG_HAVE_SMI_HANDLER),y) ramstage-srcs += $(obj)/cpu/x86/smm/smm.manual +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-srcs += $(obj)/cpu/x86/smm/smm.manual +endif endif smm-y += smmhandler.S diff --git a/src/device/Makefile.inc b/src/device/Makefile.inc index baa45be..90c814d 100644 --- a/src/device/Makefile.inc +++ b/src/device/Makefile.inc @@ -7,6 +7,13 @@ ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_64) += pnp_device.c ramstage-y += smbus_ops.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-y += device.c +postcar-y += root_device.c +postcar-y += cpu_device.c +postcar-y += device_util.c +endif + ifeq ($(CONFIG_AZALIA_PLUGIN_SUPPORT),y) ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/hda_verb.c endif @@ -22,7 +29,16 @@ bootblock-y += pci_early.c verstage-y += pci_early.c romstage-y += pci_early.c + +ifneq ($(CONFIG_SKIP_RAMSTAGE),y) postcar-y += pci_early.c +else +postcar-y += pci_device.c +postcar-y += pci_rom.c +postcar-$(CONFIG_PCIX_PLUGIN_SUPPORT) += pcix_device.c +postcar-$(CONFIG_PCIEXP_PLUGIN_SUPPORT) += pciexp_device.c +postcar-$(CONFIG_CARDBUS_PLUGIN_SUPPORT) += cardbus_device.c +endif ramstage-y += pci_class.c ramstage-y += pci_device.c diff --git a/src/drivers/elog/Makefile.inc b/src/drivers/elog/Makefile.inc index cce1c3d..fcf995f 100644 --- a/src/drivers/elog/Makefile.inc +++ b/src/drivers/elog/Makefile.inc @@ -1,7 +1,11 @@ bootblock-$(CONFIG_ELOG_PRERAM) += elog.c verstage-$(CONFIG_ELOG_PRERAM) += elog.c romstage-$(CONFIG_ELOG_PRERAM) += elog.c +ifneq ($(CONFIG_SKIP_RAMSTAGE),y) postcar-$(CONFIG_ELOG_PRERAM) += elog.c +else +postcar-$(CONFIG_ELOG) += elog.c +endif ramstage-$(CONFIG_ELOG) += elog.c smm-$(CONFIG_ELOG_GSMI) += elog.c gsmi.c diff --git a/src/drivers/intel/fsp2_0/Makefile.inc b/src/drivers/intel/fsp2_0/Makefile.inc index d627a3d..b363214 100644 --- a/src/drivers/intel/fsp2_0/Makefile.inc +++ b/src/drivers/intel/fsp2_0/Makefile.inc @@ -39,6 +39,13 @@ ramstage-y += util.c ramstage-$(CONFIG_MMA) += mma_core.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_RUN_FSP_GOP) += graphics.c +postcar-y += silicon_init.c +postcar-y += util.c +postcar-y += debug.c +endif + postcar-$(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM) += stage_cache.c postcar-$(CONFIG_FSP_CAR) += temp_ram_exit.c postcar-$(CONFIG_FSP_CAR) += util.c diff --git a/src/drivers/intel/fsp2_0/ppi/Makefile.inc b/src/drivers/intel/fsp2_0/ppi/Makefile.inc index 67c4966..dc75f29 100644 --- a/src/drivers/intel/fsp2_0/ppi/Makefile.inc +++ b/src/drivers/intel/fsp2_0/ppi/Makefile.inc @@ -13,4 +13,7 @@ # GNU General Public License for more details. # +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_FSP_USES_MP_SERVICES_PPI) += mp_service_ppi.c +endif ramstage-$(CONFIG_FSP_USES_MP_SERVICES_PPI) += mp_service_ppi.c diff --git a/src/drivers/intel/gma/Makefile.inc b/src/drivers/intel/gma/Makefile.inc index e128ad6..3a6af8b 100644 --- a/src/drivers/intel/gma/Makefile.inc +++ b/src/drivers/intel/gma/Makefile.inc @@ -20,7 +20,9 @@ endif ramstage-$(CONFIG_INTEL_GMA_ACPI) += acpi.c ramstage-$(CONFIG_INTEL_GMA_ACPI) += opregion.c - +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_INTEL_GMA_ACPI) += opregion.c +endif # add_vbt_to_cbfs, first argument is the filename in cbfs, the second one # is the filename in the coreboot tree. add_vbt_to_cbfs= \ diff --git a/src/drivers/mrc_cache/Makefile.inc b/src/drivers/mrc_cache/Makefile.inc index 0d226fe..a58285f 100644 --- a/src/drivers/mrc_cache/Makefile.inc +++ b/src/drivers/mrc_cache/Makefile.inc @@ -1,2 +1,5 @@ romstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c +endif ramstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c diff --git a/src/drivers/pc80/pc/Makefile.inc b/src/drivers/pc80/pc/Makefile.inc index 8c348e3..86dcd94 100644 --- a/src/drivers/pc80/pc/Makefile.inc +++ b/src/drivers/pc80/pc/Makefile.inc @@ -1,5 +1,6 @@ ifeq ($(CONFIG_ARCH_X86),y) +postcar-$(CONFIG_SKIP_RAMSTAGE) += isa-dma.c ramstage-y += isa-dma.c ramstage-y += i8254.c ramstage-y += i8259.c diff --git a/src/ec/google/chromeec/Makefile.inc b/src/ec/google/chromeec/Makefile.inc index 4593c73..44b5eb8 100644 --- a/src/ec/google/chromeec/Makefile.inc +++ b/src/ec/google/chromeec/Makefile.inc @@ -34,6 +34,12 @@ romstage-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-y += ec.c +postcar-$(CONFIG_EC_GOOGLE_CHROMEEC_LPC) += ec_lpc.c +postcar-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c +endif + CHROMEEC_SOURCE ?= $(top)/3rdparty/chromeec # These are Chrome EC firmware images that a payload (such as depthcharge) can diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index 1350152..6a1b5c1 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -165,6 +165,18 @@ postcar-y += imd_cbmem.c postcar-y += imd.c postcar-y += romstage_handoff.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-y += region_file.c +postcar-y += selfboot.c +postcar-y += coreboot_table.c +postcar-y += bootmem.c +postcar-y += malloc.c +postcar-y += fallback_boot.c +postcar-y += compute_ip_checksum.c +postcar-y += stack.c +postcar-y += wrdd.c +postcar-y += memrange.c +endif bootblock-y += hexdump.c ramstage-y += hexdump.c diff --git a/src/security/vboot/Makefile.inc b/src/security/vboot/Makefile.inc index 6d2096d..f4217ba 100644 --- a/src/security/vboot/Makefile.inc +++ b/src/security/vboot/Makefile.inc @@ -47,6 +47,13 @@ romstage-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c ramstage-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-y += gbb.c +postcar-y += vbnv.c +postcar-$(CONFIG_VBOOT_VBNV_CMOS) += vbnv_cmos.c +postcar-$(CONFIG_VBOOT_VBNV_CMOS_BACKUP_TO_FLASH) += vbnv_flash.c +endif + bootblock-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c verstage-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c romstage-$(CONFIG_VBOOT_VBNV_EC) += vbnv_ec.c diff --git a/src/soc/intel/common/Makefile.inc b/src/soc/intel/common/Makefile.inc index 22d350c..9d131a3 100644 --- a/src/soc/intel/common/Makefile.inc +++ b/src/soc/intel/common/Makefile.inc @@ -21,6 +21,11 @@ ramstage-y += vbt.c ramstage-$(CONFIG_SOC_INTEL_COMMON_NHLT) += nhlt.c +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE) += acpi_wake_source.c +postcar-y += vbt.c +endif + bootblock-$(CONFIG_TPM_CR50) += tpm_tis.c verstage-$(CONFIG_TPM_CR50) += tpm_tis.c romstage-$(CONFIG_TPM_CR50) += tpm_tis.c diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc index 000d056..5b72336 100644 --- a/src/vendorcode/google/chromeos/Makefile.inc +++ b/src/vendorcode/google/chromeos/Makefile.inc @@ -13,6 +13,12 @@ ## GNU General Public License for more details. ## +ifeq ($(CONFIG_SKIP_RAMSTAGE),y) +postcar-$(CONFIG_HAVE_ACPI_TABLES) += gnvs.c +postcar-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c +postcar-$(CONFIG_CHROMEOS_RAMOOPS) += ramoops.c +endif + ramstage-$(CONFIG_ELOG) += elog.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += gnvs.c ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c -- To view, visit https://review.coreboot.org/c/coreboot/+/32675 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I5269d562baf8f216e17794ffceb8f97061483515 Gerrit-Change-Number: 32675 Gerrit-PatchSet: 1 Gerrit-Owner: Subrata Banik <subrata.banik(a)intel.com> Gerrit-MessageType: newchange

3 3

Change in ...coreboot[master]: src/drivers/intel/fsp1_0: add option to specify MRC and ucode location
by Michał Żygowski (Code Review) 07 Aug '23

07 Aug '23

Michał Żygowski has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/30752 Change subject: src/drivers/intel/fsp1_0: add option to specify MRC and ucode location ...................................................................... src/drivers/intel/fsp1_0: add option to specify MRC and ucode location Change aims to give better control over CBFS content on FSP1.0 boards. Specifying location of MRC cache and microcode will allow to save more space in CBFS. Signed-off-by: Michał Żygowski <michal.zygowski(a)3mdeb.com> Change-Id: I23e4e43bdddd7836ef74a2831e631d77599cdcca --- M src/drivers/intel/fsp1_0/Kconfig M src/drivers/intel/fsp1_0/Makefile.inc 2 files changed, 16 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/52/30752/1 diff --git a/src/drivers/intel/fsp1_0/Kconfig b/src/drivers/intel/fsp1_0/Kconfig index c7f6c18..6044c0e 100644 --- a/src/drivers/intel/fsp1_0/Kconfig +++ b/src/drivers/intel/fsp1_0/Kconfig @@ -89,6 +89,19 @@ should be a full sector of the flash ROM chip and nothing else should be included in CBFS in any sector that the fast boot cache data is in. +config MRC_CACHE_LOC + hex "MRC cache location in CBFS" + depends on ENABLE_MRC_CACHE && !MRC_CACHE_FMAP + help + Define the location of MRC cache data in CBFS. + +config CPU_MICROCODE_CBFS_LOC + hex "Microcode update base address in CBFS" + depends on CPU_MICROCODE_CBFS_GENERATE || CPU_MICROCODE_CBFS_EXTERNAL_HEADER + help + The location (base address) in CBFS that contains the + microcode update binary. + config VIRTUAL_ROM_SIZE hex "Virtual ROM Size" default ROM_SIZE diff --git a/src/drivers/intel/fsp1_0/Makefile.inc b/src/drivers/intel/fsp1_0/Makefile.inc index 67741a9..4936022 100644 --- a/src/drivers/intel/fsp1_0/Makefile.inc +++ b/src/drivers/intel/fsp1_0/Makefile.inc @@ -44,6 +44,9 @@ mrc.cache-file := $(obj)/mrc.cache mrc.cache-align := 0x10000 mrc.cache-type := mrc_cache +ifneq ($(CONFIG_MRC_CACHE_LOC),) +mrc.cache-COREBOOT-position := $(CONFIG_MRC_CACHE_LOC) +endif endif endif -- To view, visit https://review.coreboot.org/c/coreboot/+/30752 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I23e4e43bdddd7836ef74a2831e631d77599cdcca Gerrit-Change-Number: 30752 Gerrit-PatchSet: 1 Gerrit-Owner: Michał Żygowski <michal.zygowski(a)3mdeb.com> Gerrit-MessageType: newchange

2 1

Change in ...coreboot[master]: [WIP]drivers/fsp1.0: Use common code for to save fastboot data
by Arthur Heymans (Code Review) 07 Aug '23

07 Aug '23

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/30792 Change subject: [WIP]drivers/fsp1.0: Use common code for to save fastboot data ...................................................................... [WIP]drivers/fsp1.0: Use common code for to save fastboot data Change-Id: Ie8c355687d3d691ae4e3ca179b0b063598ff5ac2 Signed-off-by: Arthur Heymans <arthur(a)aheymans.xyz> --- M src/drivers/intel/fsp1_0/Kconfig M src/drivers/intel/fsp1_0/Makefile.inc D src/drivers/intel/fsp1_0/fastboot_cache.c M src/drivers/intel/fsp1_0/fsp_util.c M src/drivers/intel/fsp1_0/fsp_util.h M src/northbridge/intel/fsp_rangeley/fsp/Kconfig M src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c M src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c M src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c M src/soc/intel/fsp_broadwell_de/romstage/romstage.c M src/vendorcode/intel/Makefile.inc 11 files changed, 61 insertions(+), 425 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/30792/1 diff --git a/src/drivers/intel/fsp1_0/Kconfig b/src/drivers/intel/fsp1_0/Kconfig index 4d1c4df..fa1b4c8 100644 --- a/src/drivers/intel/fsp1_0/Kconfig +++ b/src/drivers/intel/fsp1_0/Kconfig @@ -61,57 +61,12 @@ config ENABLE_FSP_FAST_BOOT bool "Enable Fast Boot" - select ENABLE_MRC_CACHE default n help Enabling this feature will force the MRC data to be cached in NV storage to be used for speeding up boot time on future reboots and/or power cycles. -config ENABLE_MRC_CACHE - bool - default y if HAVE_ACPI_RESUME - default n - help - Enabling this feature will cause MRC data to be cached in NV storage. - This can either be used for fast boot, or just because the FSP wants - it to be saved. - -config MRC_CACHE_FMAP - bool "Use MRC Cache in FMAP" - depends on ENABLE_MRC_CACHE - default n - help - Use the region "RW_MRC_CACHE" in FMAP instead of "mrc.cache" in CBFS. - You must define a region in your FMAP named "RW_MRC_CACHE". - -config MRC_CACHE_SIZE - hex "Fast Boot Data Cache Size" - default 0x10000 - depends on ENABLE_MRC_CACHE - depends on !MRC_CACHE_FMAP - help - This is the amount of space in NV storage that is reserved for the - fast boot data cache storage. - - WARNING: Because this area will be erased and re-written, the size - should be a full sector of the flash ROM chip and nothing else should - be included in CBFS in any sector that the fast boot cache data is in. - -config VIRTUAL_ROM_SIZE - hex "Virtual ROM Size" - default ROM_SIZE - depends on ENABLE_MRC_CACHE - help - This is used to calculate the offset of the MRC data cache in NV - Storage for fast boot. If in doubt, leave this set to the default - which sets the virtual size equal to the ROM size. - - Example: Cougar Canyon 2 has two 8 MB SPI ROMs. When the SPI ROMs are - loaded with a 4 MB coreboot image, the virtual ROM size is 8 MB. When - the SPI ROMs are loaded with an 8 MB coreboot image, the virtual ROM - size is 16 MB. - config USE_GENERIC_FSP_CAR_INC bool default n diff --git a/src/drivers/intel/fsp1_0/Makefile.inc b/src/drivers/intel/fsp1_0/Makefile.inc index 67741a9..5580a8b7 100644 --- a/src/drivers/intel/fsp1_0/Makefile.inc +++ b/src/drivers/intel/fsp1_0/Makefile.inc @@ -18,9 +18,6 @@ ramstage-y += fsp_util.c hob.c romstage-y += fsp_util.c hob.c -ramstage-$(CONFIG_ENABLE_MRC_CACHE) += fastboot_cache.c -romstage-$(CONFIG_ENABLE_MRC_CACHE) += fastboot_cache.c - CPPFLAGS_common += -Isrc/drivers/intel/fsp1_0 -I$(objgenerated) cpu_incs-$(CONFIG_USE_GENERIC_FSP_CAR_INC) += $(src)/drivers/intel/fsp1_0/cache_as_ram.inc @@ -33,18 +30,4 @@ fsp.bin-options := --xip endif -ifeq ($(CONFIG_ENABLE_MRC_CACHE),y) -ifneq ($(CONFIG_MRC_CACHE_FMAP),y) -$(obj)/mrc.cache: - dd if=/dev/zero count=1 \ - bs=$(shell printf "%d" $(CONFIG_MRC_CACHE_SIZE) ) | \ - tr '\000' '\377' > $@ - -cbfs-files-y += mrc.cache -mrc.cache-file := $(obj)/mrc.cache -mrc.cache-align := 0x10000 -mrc.cache-type := mrc_cache -endif -endif - endif diff --git a/src/drivers/intel/fsp1_0/fastboot_cache.c b/src/drivers/intel/fsp1_0/fastboot_cache.c deleted file mode 100644 index 76241c8..0000000 --- a/src/drivers/intel/fsp1_0/fastboot_cache.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2012 Google Inc. - * Copyright (C) 2013-2014 Sage Electronic Engineering, LLC. - * - * 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 <stdint.h> -#include <string.h> -#include <bootstate.h> -#include <console/console.h> -#include <cbfs.h> -#include <fmap.h> -#include <ip_checksum.h> -#include <device/device.h> -#include <cbmem.h> -#include <spi-generic.h> -#include <spi_flash.h> -#include <lib.h> // hexdump -#include "fsp_util.h" - -/* convert a pointer to flash area into the offset inside the flash */ -static inline u32 to_flash_offset(void *p) { - return ((u32)p + CONFIG_VIRTUAL_ROM_SIZE); -} - -static struct mrc_data_container *next_mrc_block( - struct mrc_data_container *mrc_cache) -{ - /* MRC data blocks are aligned within the region */ - u32 mrc_size = sizeof(*mrc_cache) + mrc_cache->mrc_data_size; - if (mrc_size & (MRC_DATA_ALIGN - 1UL)) { - mrc_size &= ~(MRC_DATA_ALIGN - 1UL); - mrc_size += MRC_DATA_ALIGN; - } - - u8 *region_ptr = (u8*)mrc_cache; - region_ptr += mrc_size; - return (struct mrc_data_container *)region_ptr; -} - -static int is_mrc_cache(struct mrc_data_container *mrc_cache) -{ - return (!!mrc_cache) && (mrc_cache->mrc_signature == MRC_DATA_SIGNATURE); -} - -static u32 get_mrc_cache_region(struct mrc_data_container **mrc_region_ptr) -{ - size_t region_size; - - if (IS_ENABLED(CONFIG_MRC_CACHE_FMAP)) { - struct region_device rdev; - if (fmap_locate_area_as_rdev("RW_MRC_CACHE", &rdev) == 0) { - *mrc_region_ptr = rdev_mmap_full(&rdev); - return region_device_sz(&rdev); - } - *mrc_region_ptr = NULL; - return 0; - } else { - *mrc_region_ptr = cbfs_boot_map_with_leak("mrc.cache", - CBFS_TYPE_MRC_CACHE, - &region_size); - - return region_size; - } -} - -/* - * Find the largest index block in the MRC cache. Return NULL if none is - * found. - */ -static struct mrc_data_container *find_current_mrc_cache_local - (struct mrc_data_container *mrc_cache, u32 region_size) -{ - u32 region_end; - u32 entry_id = 0; - struct mrc_data_container *mrc_next = mrc_cache; - - region_end = (u32) mrc_cache + region_size; - - /* Search for the last filled entry in the region */ - while (is_mrc_cache(mrc_next)) { - entry_id++; - mrc_cache = mrc_next; - mrc_next = next_mrc_block(mrc_next); - if ((u32)mrc_next >= region_end) { - /* Stay in the MRC data region */ - break; - } - } - - if (entry_id == 0) { - printk(BIOS_ERR, "%s: No valid fast boot cache found.\n", __func__); - return NULL; - } - - /* Verify checksum */ - if (mrc_cache->mrc_checksum != - compute_ip_checksum(mrc_cache->mrc_data, - mrc_cache->mrc_data_size)) { - printk(BIOS_ERR, "%s: fast boot cache checksum mismatch\n", __func__); - return NULL; - } - - printk(BIOS_DEBUG, "%s: picked entry %u from cache block\n", __func__, - entry_id - 1); - - return mrc_cache; -} - -/* SPI code needs malloc/free. - * Also unknown if writing flash from XIP-flash code is a good idea - */ -#if !defined(__PRE_RAM__) -/* find the first empty block in the MRC cache area. - * If there's none, return NULL. - * - * @mrc_cache_base - base address of the MRC cache area - * @mrc_cache - current entry (for which we need to find next) - * @region_size - total size of the MRC cache area - */ -static struct mrc_data_container *find_next_mrc_cache - (struct mrc_data_container *mrc_cache_base, - struct mrc_data_container *mrc_cache, - u32 region_size) -{ - u32 region_end = (u32) mrc_cache_base + region_size; - u32 mrc_data_size = mrc_cache->mrc_data_size; - - mrc_cache = next_mrc_block(mrc_cache); - if (((u32)mrc_cache + mrc_data_size) >= region_end) { - /* Crossed the boundary */ - mrc_cache = NULL; - printk(BIOS_DEBUG, "%s: no available entries found\n", - __func__); - } else { - printk(BIOS_DEBUG, - "%s: picked next entry from cache block at %p\n", - __func__, mrc_cache); - } - - return mrc_cache; -} - -void update_mrc_cache(void *unused) -{ - printk(BIOS_DEBUG, "Updating fast boot cache data.\n"); - struct mrc_data_container *current = cbmem_find(CBMEM_ID_MRCDATA); - struct mrc_data_container *cache, *cache_base; - u32 cache_size; - struct spi_flash flash; - - if (!current) { - printk(BIOS_ERR, "No fast boot cache in cbmem. Can't update flash.\n"); - return; - } - if (current->mrc_data_size == -1) { - printk(BIOS_ERR, "Fast boot cache data in cbmem invalid.\n"); - return; - } - - cache_size = get_mrc_cache_region(&cache_base); - if (cache_base == NULL) { - printk(BIOS_ERR, "%s: could not find fast boot cache area\n", - __func__); - return; - } - - /* - * we need to: - * 0. compare MRC data to last mrc-cache block (exit if same) - */ - cache = find_current_mrc_cache_local(cache_base, cache_size); - - if (cache && (cache->mrc_data_size == current->mrc_data_size) && - (memcmp(cache, current, cache->mrc_data_size) == 0)) { - printk(BIOS_DEBUG, - "MRC data in flash is up to date. No update.\n"); - return; - } - - /* 1. use spi_flash_probe() to find the flash, then... */ - spi_init(); - if (spi_flash_probe(0, 0, &flash)) { - printk(BIOS_DEBUG, "Could not find SPI device\n"); - return; - } - - /* 2. look up the first unused block */ - if (cache) - cache = find_next_mrc_cache(cache_base, cache, cache_size); - - /* - * 3. if no such place exists, erase entire mrc-cache range & use - * block 0. First time around the erase is not needed, but this is a - * small overhead for simpler code. - */ - if (!cache) { - printk(BIOS_DEBUG, - "Need to erase the MRC cache region of %d bytes at %p\n", - cache_size, cache_base); - - spi_flash_erase(&flash, to_flash_offset(cache_base), - cache_size); - - /* we will start at the beginning again */ - cache = cache_base; - } - /* 4. write mrc data with spi_flash_write() */ - printk(BIOS_DEBUG, "Write MRC cache update to flash at %p\n", - cache); - spi_flash_write(&flash, to_flash_offset(cache), - current->mrc_data_size + sizeof(*current), current); -} - -#endif /* !defined(__PRE_RAM__) */ - -void *find_and_set_fastboot_cache(void) -{ - struct mrc_data_container *mrc_cache = NULL; - if (((mrc_cache = find_current_mrc_cache()) == NULL) || - (mrc_cache->mrc_data_size == -1UL)) { - printk(BIOS_DEBUG, "FSP MRC cache not present.\n"); - return NULL; - } - printk(BIOS_DEBUG, "FSP MRC cache present at %x.\n", (u32)mrc_cache); - printk(BIOS_SPEW, "Saved MRC data:\n"); - hexdump32(BIOS_SPEW, (void *)mrc_cache->mrc_data, (mrc_cache->mrc_data_size) / 4); - return (void *) mrc_cache->mrc_data; -} - -struct mrc_data_container *find_current_mrc_cache(void) -{ - struct mrc_data_container *cache_base; - u32 cache_size; - - cache_size = get_mrc_cache_region(&cache_base); - if (cache_base == NULL) { - printk(BIOS_ERR, "%s: could not find fast boot cache area\n", - __func__); - return NULL; - } - - /* - * we need to: - * 0. compare MRC data to last mrc-cache block (exit if same) - */ - return find_current_mrc_cache_local(cache_base, cache_size); -} diff --git a/src/drivers/intel/fsp1_0/fsp_util.c b/src/drivers/intel/fsp1_0/fsp_util.c index 71f6416..7253a56 100644 --- a/src/drivers/intel/fsp1_0/fsp_util.c +++ b/src/drivers/intel/fsp1_0/fsp_util.c @@ -23,6 +23,7 @@ #include <ip_checksum.h> #include <timestamp.h> #include <cpu/intel/microcode.h> +#include <mrc_cache.h> #ifndef __PRE_RAM__ /* Globals pointers for FSP structures */ @@ -213,6 +214,38 @@ } #endif /* FSP_RESERVE_MEMORY_SIZE */ +#if defined(__ROMSTAGE__) +/** + * Save the FSP memory HOB (mrc data) to the MRC area in CBMEM + */ +enum cb_err save_mrc_data(void *hob_start, uint32_t version) +{ + u32 *mrc_hob; + u32 *mrc_hob_data; + u32 mrc_hob_size; + int output_len; + const EFI_GUID mrc_guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID; + + mrc_hob = GetNextGuidHob(&mrc_guid, hob_start); + if (mrc_hob == NULL){ + printk(BIOS_DEBUG, "Memory Configure Data Hob is not present\n"); + return CB_ERR; + } + + mrc_hob_data = GET_GUID_HOB_DATA(mrc_hob); + mrc_hob_size = (u32) GET_HOB_LENGTH(mrc_hob); + + printk(BIOS_DEBUG, "Memory Configure Data Hob at %p (size = 0x%x).\n", + (void *)mrc_hob_data, mrc_hob_size); + + output_len = ALIGN(mrc_hob_size, 16); + + return mrc_cache_stash_data(MRC_TRAINING_DATA, version, mrc_hob_data, + mrc_hob_size); +} +#endif + + #ifndef __PRE_RAM__ /* Only parse HOB data in ramstage */ void print_fsp_info(void) { @@ -237,86 +270,6 @@ (u8)(fsp_header_ptr->ImageRevision & 0xff)); } - -#if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE) -/** - * Save the FSP memory HOB (mrc data) to the MRC area in CBMEM - */ -int save_mrc_data(void *hob_start) -{ - u32 *mrc_hob; - u32 *mrc_hob_data; - u32 mrc_hob_size; - struct mrc_data_container *mrc_data; - int output_len; - const EFI_GUID mrc_guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID; - - mrc_hob = GetNextGuidHob(&mrc_guid, hob_start); - if (mrc_hob == NULL){ - printk(BIOS_DEBUG, "Memory Configure Data Hob is not present\n"); - return(0); - } - - mrc_hob_data = GET_GUID_HOB_DATA (mrc_hob); - mrc_hob_size = (u32) GET_HOB_LENGTH(mrc_hob); - - printk(BIOS_DEBUG, "Memory Configure Data Hob at %p (size = 0x%x).\n", - (void *)mrc_hob_data, mrc_hob_size); - - output_len = ALIGN(mrc_hob_size, 16); - - /* Save the MRC S3/fast boot/ADR restore data to cbmem */ - mrc_data = cbmem_add (CBMEM_ID_MRCDATA, - output_len + sizeof(struct mrc_data_container)); - - /* Just return if there was a problem with getting CBMEM */ - if (mrc_data == NULL) { - printk(BIOS_WARNING, "CBMEM was not available to save the fast boot cache data.\n"); - return 0; - } - - printk(BIOS_DEBUG, "Copy FSP MRC DATA to HOB (source addr %p, dest addr %p, %u bytes)\n", - (void *)mrc_hob_data, mrc_data, output_len); - - mrc_data->mrc_signature = MRC_DATA_SIGNATURE; - mrc_data->mrc_data_size = output_len; - mrc_data->reserved = 0; - memcpy(mrc_data->mrc_data, (const void *)mrc_hob_data, mrc_hob_size); - - /* Zero the unused space in aligned buffer. */ - if (output_len > mrc_hob_size) - memset((mrc_data->mrc_data + mrc_hob_size), 0, - output_len - mrc_hob_size); - - mrc_data->mrc_checksum = compute_ip_checksum(mrc_data->mrc_data, - mrc_data->mrc_data_size); - - printk(BIOS_SPEW, "Fast boot data (includes align and checksum):\n"); - hexdump32(BIOS_SPEW, (void *)mrc_data->mrc_data, output_len / 4); - return (1); -} -#endif /* CONFIG_ENABLE_MRC_CACHE */ - -static void find_fsp_hob_update_mrc(void *unused) -{ - /* Set the global HOB list pointer */ - FspHobListPtr = (void *)*((u32 *) cbmem_find(CBMEM_ID_HOB_POINTER)); - - if (!FspHobListPtr){ - printk(BIOS_ERR, "ERROR: Could not find FSP HOB pointer in CBFS!\n"); - } else { - /* 0x0000: Print all types */ - print_hob_type_structure(0x000, FspHobListPtr); - - #if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE) - if (save_mrc_data(FspHobListPtr)) - update_mrc_cache(NULL); - else - printk(BIOS_DEBUG,"Not updating MRC data in flash.\n"); - #endif - } -} - /** @brief Notify FSP for PostPciEnumeration * * @param unused @@ -348,7 +301,4 @@ BOOT_STATE_INIT_ENTRY(BS_DEV_ENUMERATE, BS_ON_EXIT, fsp_after_pci_enum, NULL); BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_BOOT, BS_ON_ENTRY, fsp_finalize, NULL); -/* Update the MRC/fast boot cache as part of the late table writing stage */ -BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY, - find_fsp_hob_update_mrc, NULL); #endif /* #ifndef __PRE_RAM__ */ diff --git a/src/drivers/intel/fsp1_0/fsp_util.h b/src/drivers/intel/fsp1_0/fsp_util.h index d5d0160..b960158 100644 --- a/src/drivers/intel/fsp1_0/fsp_util.h +++ b/src/drivers/intel/fsp1_0/fsp_util.h @@ -19,10 +19,7 @@ #include <chipset_fsp_util.h> #include "fsp_values.h" -#if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE) -int save_mrc_data(void *hob_start); -void *find_and_set_fastboot_cache(void); -#endif +enum cb_err save_mrc_data(void *hob_start, uint32_t version); volatile u8 *find_fsp(void); void fsp_early_init(FSP_INFO_HEADER *fsp_info); @@ -75,10 +72,6 @@ struct mrc_data_container *find_current_mrc_cache(void); -#if !defined(__PRE_RAM__) -void update_mrc_cache(void *unused); -#endif - #endif /* The offset in bytes from the start of the info structure */ diff --git a/src/northbridge/intel/fsp_rangeley/fsp/Kconfig b/src/northbridge/intel/fsp_rangeley/fsp/Kconfig index 67ed66b..30fc94f 100644 --- a/src/northbridge/intel/fsp_rangeley/fsp/Kconfig +++ b/src/northbridge/intel/fsp_rangeley/fsp/Kconfig @@ -18,7 +18,6 @@ select PLATFORM_USES_FSP1_0 select USE_GENERIC_FSP_CAR_INC select FSP_USES_UPD - select ENABLE_MRC_CACHE #rangeley FSP always needs MRC data config FSP_FILE string diff --git a/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c b/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c index 7977575..03c51b3 100644 --- a/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c +++ b/src/northbridge/intel/fsp_rangeley/fsp/chipset_fsp_util.c @@ -23,6 +23,7 @@ #include <device/device.h> #include <southbridge/intel/fsp_rangeley/pci_devs.h> #include <drivers/intel/fsp1_0/fsp_util.h> +#include <include/mrc_cache.h> #include <fspvpd.h> #include <fspbootmode.h> #include "../chip.h" @@ -160,9 +161,11 @@ pFspInitParams->NvsBufferPtr = NULL; pFspRtBuffer->Common.BootMode = BOOT_WITH_FULL_CONFIGURATION; - /* Find the fastboot cache that was saved in the ROM */ - pFspInitParams->NvsBufferPtr = find_and_set_fastboot_cache(); - + struct region_device rdev; + if (mrc_cache_get_current(MRC_TRAINING_DATA, 1, &rdev)) { + /* Find the fastboot cache that was saved in the ROM */ + pFspInitParams->NvsBufferPtr = rdev_mmap_full(&rdev); + } return; } diff --git a/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c b/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c index 3786c0c..99f9548 100644 --- a/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c +++ b/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c @@ -24,6 +24,7 @@ #include <device/pci_def.h> #include <soc/pci_devs.h> #include <drivers/intel/fsp1_0/fsp_util.h> +#include <include/mrc_cache.h> #include "../chip.h" #include <arch/io.h> #include <soc/pmc.h> @@ -307,10 +308,13 @@ ConfigureDefaultUpdData(fsp_ptr, pFspRtBuffer->Common.UpdDataRgnPtr); pFspInitParams->NvsBufferPtr = NULL; -#if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE) - /* Find the fastboot cache that was saved in the ROM */ - pFspInitParams->NvsBufferPtr = find_and_set_fastboot_cache(); -#endif + if (IS_ENABLED(CONFIG_ENABLE_FSP_FAST_BOOT)) { + struct region_device rdev; + if (mrc_cache_get_current(MRC_TRAINING_DATA, 1, &rdev)) { + /* Find the fastboot cache that was saved in the ROM */ + pFspInitParams->NvsBufferPtr = rdev_mmap_full(&rdev); + } + } if (prev_sleep_state == ACPI_S3) { /* S3 resume */ diff --git a/src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c b/src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c index 800f686..3de1cea 100644 --- a/src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c +++ b/src/soc/intel/fsp_broadwell_de/fsp/chipset_fsp_util.c @@ -24,6 +24,7 @@ #include <device/device.h> #include <device/pci_def.h> #include <drivers/intel/fsp1_0/fsp_util.h> +#include <include/mrc_cache.h> #include <soc/pci_devs.h> #include <soc/romstage.h> #include <chip.h> @@ -128,11 +129,13 @@ ConfigureDefaultUpdData(pFspRtBuffer->Common.UpdDataRgnPtr); pFspInitParams->NvsBufferPtr = NULL; -#if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE) - /* Find the fastboot cache that was saved in the ROM */ - pFspInitParams->NvsBufferPtr = find_and_set_fastboot_cache(); -#endif - + if (IS_ENABLED(CONFIG_ENABLE_FSP_FAST_BOOT)) { + struct region_device rdev; + if (mrc_cache_get_current(MRC_TRAINING_DATA, 1, &rdev)) { + /* Find the fastboot cache that was saved in the ROM */ + pFspInitParams->NvsBufferPtr = rdev_mmap_full(&rdev); + } + } return; } diff --git a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c index 003ae22..590aec8 100644 --- a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c +++ b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c @@ -117,12 +117,15 @@ post_code(0x4d); cbmem_was_initted = !cbmem_recovery(0); - /* Save the HOB pointer in CBMEM to be used in ramstage*/ + /* Save the HOB pointer in CBMEM to be used in ramstage */ cbmem_hob_ptr = cbmem_add(CBMEM_ID_HOB_POINTER, sizeof(*hob_list_ptr)); if (cbmem_hob_ptr == NULL) die("Could not allocate cbmem for HOB pointer"); *(u32 *)cbmem_hob_ptr = (u32)hob_list_ptr; +#define MRC_CACHE_VERSION 1 /* TODO fetch FSP version */ + save_mrc_data(cbmem_hob_ptr, 1); + /* Load the ramstage. */ post_code(0x4e); run_ramstage(); diff --git a/src/vendorcode/intel/Makefile.inc b/src/vendorcode/intel/Makefile.inc index 33b2f81..9543756 100644 --- a/src/vendorcode/intel/Makefile.inc +++ b/src/vendorcode/intel/Makefile.inc @@ -18,6 +18,7 @@ FSP_PATH := $(call strip_quotes,$(CONFIG_FSP_VENDORCODE_HEADER_PATH)) FSP_SRC_FILES := $(wildcard src/vendorcode/intel/$(FSP_PATH)/srx/*.c) FSP_C_INPUTS := $(foreach file, $(FSP_SRC_FILES), $(FSP_PATH)/srx/$(notdir $(file))) +romstage-y += $(FSP_C_INPUTS) ramstage-y += $(FSP_C_INPUTS) CFLAGS_x86_32 += -Isrc/vendorcode/intel/$(FSP_PATH)/include -- To view, visit https://review.coreboot.org/c/coreboot/+/30792 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: Ie8c355687d3d691ae4e3ca179b0b063598ff5ac2 Gerrit-Change-Number: 30792 Gerrit-PatchSet: 1 Gerrit-Owner: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-Reviewer: Arthur Heymans <arthur(a)aheymans.xyz> Gerrit-Reviewer: David Guckian <david.guckian(a)intel.com> Gerrit-Reviewer: Huang Jin <huang.jin(a)intel.com> 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: Philipp Deppenwiese <zaolin.daisuki(a)gmail.com> Gerrit-Reviewer: York Yang <york.yang(a)intel.com> Gerrit-MessageType: newchange

2 1

Change in ...coreboot[master]: Documentation: Explain SimpleELF
by Patrick Rudolph (Code Review) 07 Aug '23

07 Aug '23

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/33447 Change subject: Documentation: Explain SimpleELF ...................................................................... Documentation: Explain SimpleELF Explain coreboot's SELF format. Change-Id: Ia217af7d39505393ed9324fbe53b4ca7f3069e2e Signed-off-by: Patrick Rudolph <patrick.rudolph(a)9elements.com> --- M Documentation/lib/payloads/index.md A Documentation/lib/payloads/selfboot.md M Documentation/payloads.md 3 files changed, 44 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/33447/1 diff --git a/Documentation/lib/payloads/index.md b/Documentation/lib/payloads/index.md index 44daef1..b8eca8c 100644 --- a/Documentation/lib/payloads/index.md +++ b/Documentation/lib/payloads/index.md @@ -6,6 +6,10 @@ coreboot supports multiple payloads, depending on the architecture of the selected mainboard. +## SimpleELF + +- [SimpleELF format](selfboot.md) + ## FIT - [uImage.FIT support](fit.md) diff --git a/Documentation/lib/payloads/selfboot.md b/Documentation/lib/payloads/selfboot.md new file mode 100644 index 0000000..62a4393 --- /dev/null +++ b/Documentation/lib/payloads/selfboot.md @@ -0,0 +1,28 @@ +# Simple ELF standard + +coreboot is able to use static linked ELF binaries as payload. +To reduce complexity the ELF binaries are converted to coreboot's SimpleELF +(SELF) format. +The payload is therefore split into multiple sections by `cbfstool` at +build time, each having a unique loading address and possible compression. + +## SELF loader +The SELF loader implementation can be found in `src/lib/selfboot.c`. +It decompresses the SELF sections and places them in memory. + +If the payload overlaps with the loading stage (*RAMSTAGE*) and +`CONFIG_RELOCATABLE_RAMSTAGE` is selected, the loading stage is moved to another +location in RAM. + +SELF payloads are **never** relocatable and will always be placed at the +address they specify. If it's not possible to load the payload at the specified +address, the system won't boot. + +### Calling conventions +The SELF payload is called with a pointer to the coreboot tables as first +argument. + +**Note:** The only exception is made on [RISC-V] which does use the *HARTID* +and a pointer to the *FDT* as arguments. + +[RISC-V]: ../../arch/riscv/index.md diff --git a/Documentation/payloads.md b/Documentation/payloads.md index b1eae61..650818e 100644 --- a/Documentation/payloads.md +++ b/Documentation/payloads.md @@ -7,6 +7,12 @@ There is various software in that space that is either explicitly written as payload or can be made to work as one. +## ELF + +Executable and linking format (ELF) compatible static linked binaries can be +loaded as payload. +ELF binaries are loaded through the [SELF] boot mechanism. + ## SeaBIOS [SeaBIOS](https://www.seabios.org) is an open source implementation of @@ -14,6 +20,7 @@ since. While originally written for emulators such as QEMU, it can be made to work as a coreboot payload and all the necessary code is in SeaBIOS' mainline code. +SeaBIOS is loaded through the [SELF] boot mechanism. ## Tianocore @@ -40,3 +47,8 @@ firmware project drivers that often reinvent the wheel) and the ability to define boot policy with familiar tools, no matter if those are shell scripts or compiled userland programs written in C, Go or other programming languages. + +On x86 platforms Linux is loaded through the [SELF] boot mechanism, by adding a +*tampoline code* at the start of the kernel. + +[SELF]: lib/payloads/selfboot.md -- To view, visit https://review.coreboot.org/c/coreboot/+/33447 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: Ia217af7d39505393ed9324fbe53b4ca7f3069e2e Gerrit-Change-Number: 33447 Gerrit-PatchSet: 1 Gerrit-Owner: Patrick Rudolph <patrick.rudolph(a)9elements.com> Gerrit-MessageType: newchange

7 12

Change in coreboot[master]: util/pmh7tool: support OpenBSD
by Evgeny Zinoviev (Code Review) 07 Aug '23

07 Aug '23

Evgeny Zinoviev has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/38349 ) Change subject: util/pmh7tool: support OpenBSD ...................................................................... util/pmh7tool: support OpenBSD Change-Id: I8aeee4009fb38204b1bdbe6712d759ab17b2cbd9 Signed-off-by: Evgeny Zinoviev <me(a)ch1p.io> --- M util/pmh7tool/Makefile M util/pmh7tool/pmh7tool.c 2 files changed, 33 insertions(+), 3 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/49/38349/1 diff --git a/util/pmh7tool/Makefile b/util/pmh7tool/Makefile index 034ed40..0df7984 100644 --- a/util/pmh7tool/Makefile +++ b/util/pmh7tool/Makefile @@ -19,6 +19,10 @@ INSTALL = /usr/bin/env install PREFIX = /usr/local +ifeq ($(shell uname -s 2>/dev/null), OpenBSD) +LDFLAGS = -lamd64 +endif + all: $(PROGRAM) $(PROGRAM): pmh7tool.o diff --git a/util/pmh7tool/pmh7tool.c b/util/pmh7tool/pmh7tool.c index f03d97e..b268f9b 100644 --- a/util/pmh7tool/pmh7tool.c +++ b/util/pmh7tool/pmh7tool.c @@ -16,13 +16,36 @@ #include <stdio.h> #include <stdlib.h> #include <getopt.h> +#if !defined __OpenBSD__ #include <sys/io.h> +#endif #include <errno.h> #include <string.h> #include <unistd.h> #include <stdint.h> #include "pmh7tool.h" +#if defined __OpenBSD__ +#include <machine/sysarch.h> +static uint8_t inb(unsigned port) +{ + uint8_t data; + __asm volatile("inb %w1,%0" : "=a" (data) : "d" (port)); + return data; +} +static __inline void outb(uint8_t data, unsigned port) +{ + __asm volatile("outb %0,%w1" : : "a" (data), "d" (port)); +} + +#if defined __i386__ +#define iopl i386_iopl +#else +#define iopl amd64_iopl +#endif + +#endif + uint8_t pmh7_register_read(uint16_t reg) { outb(reg & 0xff, EC_LENOVO_PMH7_ADDR_L); @@ -85,7 +108,7 @@ int main(int argc, char *argv[]) { enum action act = HELP; - int opt, option_index = 0; + int i, opt, option_index = 0; long input_addr = 0, input_data = 0; static struct option long_options[] = { @@ -185,15 +208,18 @@ fprintf(stderr, "You must be root.\n"); exit(1); } - +#if !defined __OpenBSD__ if (ioperm(EC_LENOVO_PMH7_BASE, 0x10, 1)) { +#else + if (iopl(3)) { +#endif fprintf(stderr, "ioperm: %s\n", strerror(errno)); exit(1); } switch (act) { case DUMP: - for (int i = 0; i < 0x200; i++) { + for (i = 0; i < 0x200; i++) { if ((i % 0x10) == 0) { if (i != 0) printf("\n"); -- To view, visit https://review.coreboot.org/c/coreboot/+/38349 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I8aeee4009fb38204b1bdbe6712d759ab17b2cbd9 Gerrit-Change-Number: 38349 Gerrit-PatchSet: 1 Gerrit-Owner: Evgeny Zinoviev <me(a)ch1p.io> Gerrit-MessageType: newchange

5 9

Change in coreboot[master]: vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze: Remove redun...
by Name of user not set (Code Review) 07 Aug '23

07 Aug '23

awokd(a)danwin1210.me has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36001 ) Change subject: vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze: Remove redundant FIS code ...................................................................... vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze: Remove redundant FIS code From looking at neighboring code, disabling FIS based switching appears intentional, possibly due to errata. Clean and comment code so it is apparent. Change-Id: I4529716e951a9e7b63bdee11611dd78f2d41b464 Signed-off-by: Joe Moore <awokd(a)danwin1210.me> --- M src/vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze/YangtzeSataService.c 1 file changed, 4 insertions(+), 10 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/01/36001/1 diff --git a/src/vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze/YangtzeSataService.c b/src/vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze/YangtzeSataService.c index 9f526d8..293ea57 100644 --- a/src/vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze/YangtzeSataService.c +++ b/src/vendorcode/amd/agesa/f16kb/Proc/Fch/Sata/Family/Yangtze/YangtzeSataService.c @@ -367,11 +367,8 @@ AndMaskDword |= BIT12; } - if ( FchSataFisBasedSwitching ) { - AndMaskDword |= BIT10; - } else { - AndMaskDword |= BIT10; - } + // FchSataFisBasedSwitching + AndMaskDword |= BIT10; if ( FchSataAggrLinkPmCap ) { OrMaskDword |= BIT11; @@ -431,11 +428,8 @@ RwMem ((Bar5 + 0x0FC), AccessWidth32, (UINT32)~(BIT20), 0x00); } - if ( FchSataFisBasedSwitching ) { - RwMem ((Bar5 + 0x0F8), AccessWidth32, 0x00FFFFFF, 0x00); - } else { - RwMem ((Bar5 + 0x0F8), AccessWidth32, 0x00FFFFFF, 0x00); - } + // FchSataFisBasedSwitching + RwMem ((Bar5 + 0x0F8), AccessWidth32, 0x00FFFFFF, 0x00); if ( LocalCfgPtr->Sata.BiosOsHandOff == 1 ) { RwMem ((Bar5 + 0x24), AccessWidth8, (UINT32)~BIT0, BIT0); -- To view, visit https://review.coreboot.org/c/coreboot/+/36001 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I4529716e951a9e7b63bdee11611dd78f2d41b464 Gerrit-Change-Number: 36001 Gerrit-PatchSet: 1 Gerrit-Owner: awokd(a)danwin1210.me Gerrit-MessageType: newchange

4 8

Change in coreboot[master]: [WIP]Documentation: Add Intel microcode update mechanism
by Patrick Rudolph (Code Review) 07 Aug '23

07 Aug '23

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36539 ) Change subject: [WIP]Documentation: Add Intel microcode update mechanism ...................................................................... [WIP]Documentation: Add Intel microcode update mechanism Document microcode updates and how secure microcode updates are done in GNU/Linux. Propose how to do microcode updates in coreboot. Change-Id: I78350fc81cb0de7b0b2d9cbd8537e6b3815916c0 Signed-off-by: Patrick Rudolph <siro(a)das-labor.org> --- M Documentation/soc/intel/index.md A Documentation/soc/intel/microcode/index.md 2 files changed, 111 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/36539/1 diff --git a/Documentation/soc/intel/index.md b/Documentation/soc/intel/index.md index f30ff9a..1cf8548 100644 --- a/Documentation/soc/intel/index.md +++ b/Documentation/soc/intel/index.md @@ -2,6 +2,10 @@ This section contains documentation about coreboot on specific Intel SOCs. +## Common + +- [Microcode updates](microcode/index.md) + ## Platforms - [Common code development strategy](code_development_model/code_development_model.md) diff --git a/Documentation/soc/intel/microcode/index.md b/Documentation/soc/intel/microcode/index.md new file mode 100644 index 0000000..b7f5949 --- /dev/null +++ b/Documentation/soc/intel/microcode/index.md @@ -0,0 +1,107 @@ +# Microcode updates on Intel CPUs + +## What are microcodes? + +```eval_rst +Microcode is a computer hardware technique that interposes a layer of +organisation between the CPU hardware and the programmer-visible +instruction set architecture of the computer. [#1]_ +``` + +In coreboot the microcode updates are stored in files in the CBFS and +are used to update the CPU microcode at runtime using a special instruction. + +## How does a microcode update look like? + +The microcode update is a binary provided by Intel consisting out of +a header and data. +The header holds the processor signature for which the update is +intented and additional metadata. +For detailed information check the [Intel SDM] 253668-060US Chapter 9.11.1 + +## When are mirocode updates done? + +Microcode updates are stored in the CPU's SRAM and thus needs to be loaded +after a hard reset. However loading microcode updates is done multiple times +in coreboot's boot sequence. + +On some CPUs it's neccessary to do an microcode update before: +* Cache-As-RAM is enabled +* Legacy Intel TXT FIT boot is run +* MultiProcessor-Init is run + +On some CPUs it's neccessary to do an microcode update after: +* SMM setup was done +* SGX setup was done + +## How to do microcode updates? + +The following chapter is based multiple sources and testing due to lack of clear +documentation. + +In order to safely update microcode on any generation the GNU/Linux kernel +"late loading mechanism" takes a conservative approach and obeys the following +rules: + +```eval_rst +* All physical CPU cores must be updated with the same microcode version [#2]_ +* Caches need to be flushed on certain CPUs prior to microcode update [#3]_ +* The sibling thread must be idle while a microcode update is ongoing [#4]_ +* All other APs on the same package should be idle (or in Wait-for-SIPI) [#5]_ +* The microcode update is done sequentially [#6]_ +``` + +The downside of this approach is that it's very slow. + +It seems to be possible to run microcode updates in parallel on APs on specific +CPUs. + +## How to do microcode updates in coreboot ramstage? + +*TBD* + +Proposal: +1. Run microcode update sequential by default +2. Flush caches in non CAR environment before running a microcode update +3. Switch to parallel microcode update after extensive testing (10000 boot cycles) + +For parallel microcde update: +1. On Intel HT enabled CPUs spinlock the slibing thread of a logical core +2. On Intel HT enabled CPUs only update one thread of a physical core +3. Synchronize microcode loading. This will make sure no other computational work + is being done while an update occurs (thus no Wait-for-SIPI). + +## Intel Hyper-Threading enabled CPUs + +```eval_rst +According to Intel SDM a Hyper-Threading enabled core shares the microcode unit +between the logical CPU cores [#4]_. Intel NetBurst CPUs must not attempt to +update the microcode on both logical cores at the same time, this is safe for +newer CPU generations. +``` + +## Where to obtain the microcode updates? + +The microcode update files can be found on Intel's [Github Microcode]. + +## References +- [Wikipedia microcode] +- [Github Microcode] +- [Intel SDM] + +------------- +```eval_rst +.. [#1] Kent, Allen; Williams, James G. (April 5, 1993). `Encyclopedia of Computer Science and Technology: Volume 28 <http://https://books.google.com/books?id=EjWV8J8CQEYC>`_ +.. [#2] `Intel SDM Document 253668-060US`_ Chapter 9.11.6.3 "Update in a System Supporting Intel Hyper-Threading Technology" +.. [#3] GNU/Linux commit by Ashok Raj `<https://lore.kernel.org/patchwork/patch/890717/>`_ +.. [#4] `Intel SDM Document 253668-060US`_ Chapter 8.8.5 "Microcode Update Resources" +.. [#5] GNU/Linux commit by Ashok Raj `<https://lore.kernel.org/patchwork/patch/890713/>`_ +.. [#6] `Intel SDM Document 253668-060US`_ Chapter 9.11.6.3 "Update in a System Supporting Intel Hyper-Threading Technology" + +.. _Intel SDM Document 253668-060US: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-… + +``` + +[Wikipedia microcode]: https://en.wikipedia.org/wiki/Microcode +[Github Microcode]: https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files +[Intel SDM]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-… -- To view, visit https://review.coreboot.org/c/coreboot/+/36539 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I78350fc81cb0de7b0b2d9cbd8537e6b3815916c0 Gerrit-Change-Number: 36539 Gerrit-PatchSet: 1 Gerrit-Owner: Patrick Rudolph <siro(a)das-labor.org> Gerrit-MessageType: newchange

4 3

Change in ...coreboot[master]: lib.h: Add convenient memcpy() variants
by Nico Huber (Code Review) 07 Aug '23

07 Aug '23

Nico Huber has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/32740 Change subject: lib.h: Add convenient memcpy() variants ...................................................................... lib.h: Add convenient memcpy() variants Add two macros that should help in cases where the arguments are objects (not pointers) and the count of bytes to be copied is the size of one of them (or both). * memcpy_dlen(dst, src) copies `sizeof(dst)` bytes (destination length). * memcpy_elen(dst, src) asserts that both sizes match and copies as many bytes (equal length). Change-Id: I2b23066b3bcc29ff679e620f723ce1da5057aa03 Signed-off-by: Nico Huber <nico.h(a)gmx.de> --- M src/include/lib.h 1 file changed, 15 insertions(+), 0 deletions(-) git pull ssh://review.coreboot.org:29418/coreboot refs/changes/40/32740/1 diff --git a/src/include/lib.h b/src/include/lib.h index 098d62d..6cbe6f3 100644 --- a/src/include/lib.h +++ b/src/include/lib.h @@ -18,6 +18,7 @@ #ifndef __LIB_H__ #define __LIB_H__ #include <stdint.h> +#include <string.h> #include <types.h> /* Defined in src/lib/lzma.c. Returns decompressed size or 0 on error. */ @@ -69,4 +70,18 @@ /* Integer binary logarithm (rounding up): log2_ceil(0) == -1, log2(5) == 3 */ static inline int log2_ceil(u32 x) { return (x == 0) ? -1 : log2(x * 2 - 1); } +/* memcpy destination length (memcpy_dlen) copies `sizeof(dst)` bytes. */ +#define memcpy_dlen(dst, src) memcpy(dst, src, sizeof(dst)) + +/* + * memcpy equal length (memcpy_elen) + * Asserts that both objects `dst` and `src` + * have the same size and copies as many bytes. + */ +#define memcpy_elen(dst, src) do { \ + _Static_assert(sizeof(dst) == sizeof(src), \ + "`dst` and `src` need equal length!"); \ + memcpy_dlen(dst, src); \ +} while (0) + #endif /* __LIB_H__ */ -- To view, visit https://review.coreboot.org/c/coreboot/+/32740 To unsubscribe, or for help writing mail filters, visit https://review.coreboot.org/settings Gerrit-Project: coreboot Gerrit-Branch: master Gerrit-Change-Id: I2b23066b3bcc29ff679e620f723ce1da5057aa03 Gerrit-Change-Number: 32740 Gerrit-PatchSet: 1 Gerrit-Owner: Nico Huber <nico.h(a)gmx.de> Gerrit-MessageType: newchange

4 5

← Newer
1
...
4
5
6
7
8
9
10
...
187
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

coreboot-gerrit January 2020