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Felix Held 46e6a5883e Revert "drivers/intel/fsp2_0: use FSP to allocate APEI BERT memory region" 
This reverts commit ce0e2a0140 which was
originally introduced as a workaround for the bug that the Linux kernel
doesn't know what to do with type 16 memory region in the e820 table
where CBMEM resides and disallowed accessing it. After depthcharge was
patched to mark the type 16 region as a normal reserved region, the
Linux kernel now can access the BERT region and print BERT errors. When
SeaBIOS was used as payload it already marked the memory region
correctly, so it already worked in that case.

After commit 8c3a8df102 that removed the
usage of the BERT memory region reserved by the FSP driver by the AMD
Picasso and Cezanne SoCs and made them use CBMEM for the BERT region,
no other SoC code uses this functionality. The Intel Alderlake and
Tigerlake SoCs put the BERT region in CBMEM and never used this reserved
memory region and the change for the Intel server CPU to use this was
abandoned and never landed in upstream coreboot. AMD Stoneyridge is the
only other SoC/chipset that selects ACPI_BERT, but since it doesn't
select or use the FSP driver, it also won't be affected by this change.

TEST=Behavior of the BERT code doesn't change on Mandolin

Change-Id: I6ca095ca327cbf925edb59b89fff42ff9f96de5d
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56163
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 		2021-07-12 17:34:00 +00:00
3rdparty Update vboot submodule to upstream main 2021-07-01 09:38:12 +00:00
Documentation Documentation/drivers/dptf: Add oem variables support 2021-07-08 15:49:55 +00:00
LICENSES treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
configs configs: Explicitly specify vendor and mainboard 2021-07-07 05:48:25 +00:00
payloads nvs: Add Chrome OS NVS (CNVS) information to coreboot tables 2021-06-18 18:38:14 +00:00
src Revert "drivers/intel/fsp2_0: use FSP to allocate APEI BERT memory region" 2021-07-12 17:34:00 +00:00
tests helpers: Introduce retry macro 2021-06-26 10:09:06 +00:00
util amdfwtool: Fix the NULL pointer in parameters 2021-07-08 18:52:00 +00:00
.checkpatch.conf lint: checkpatch: Only exclude specific src/vendorcode/ subdirectories 2021-04-06 16:04:41 +00:00
.clang-format
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.editorconfig
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.gitignore .gitignore: Ignore .test/.dependencies globally 2020-10-31 18:21:36 +00:00
.gitmodules .gitmodules: Update intel-microcode submodule to track branch=main 2021-06-09 17:20:50 +00:00
.gitreview
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AUTHORS
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COPYING
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MAINTAINERS Revert "src/mainboard: Add Star Labs labtop series" 2021-06-04 18:52:32 +00:00
Makefile tests: improve code coverage support 2021-05-19 19:56:02 +00:00
Makefile.inc Revert "Makefile.inc: Drop the cbfs master header from non-X86" 2021-07-09 00:52:10 +00:00
README.md
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gnat.adc
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toolchain.inc toolchain.inc: copy architecture specific CFLAGS to GCC_ADAFLAGS 2021-07-01 09:43:54 +00:00

README.md

coreboot README

coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload.

With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required.

coreboot was formerly known as LinuxBIOS.

Payloads

After the basic initialization of the hardware has been performed, any desired "payload" can be started by coreboot.

See https://www.coreboot.org/Payloads for a list of supported payloads.

Supported Hardware

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

Build Requirements

  • make
  • gcc / g++ Because Linux distribution compilers tend to use lots of patches. coreboot does lots of "unusual" things in its build system, some of which break due to those patches, sometimes by gcc aborting, sometimes - and that's worse - by generating broken object code. Two options: use our toolchain (eg. make crosstools-i386) or enable the ANY_TOOLCHAIN Kconfig option if you're feeling lucky (no support in this case).
  • iasl (for targets with ACPI support)
  • pkg-config
  • libssl-dev (openssl)

Optional:

  • doxygen (for generating/viewing documentation)
  • gdb (for better debugging facilities on some targets)
  • ncurses (for make menuconfig and make nconfig)
  • flex and bison (for regenerating parsers)

Building coreboot

Please consult https://www.coreboot.org/Build_HOWTO for details.

Testing coreboot Without Modifying Your Hardware

If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU.

Please see https://www.coreboot.org/QEMU for details.

Website and Mailing List

Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:

https://www.coreboot.org

You can contact us directly on the coreboot mailing list:

https://www.coreboot.org/Mailinglist

Copyright and License

The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.

coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.

This makes the resulting coreboot images licensed under the GPL, version 2.