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Julius Werner a9b44f4c79 spd_bin: Replace get_spd_cbfs_rdev() with spd_cbfs_map() 
In pursuit of the goal of eliminating the proliferation of raw region
devices to represent CBFS files outside of the CBFS core code, this
patch removes the get_spd_cbfs_rdev() API and instead replaces it with
spd_cbfs_map() which will find and map the SPD file in one go and return
a pointer to the relevant section. (This makes it impossible to unmap
the mapping again, which all but one of the users didn't bother to do
anyway since the API is only used on platforms with memory-mapped
flash. Presumably this will stay that way in the future so this is not
something worth worrying about.)

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Iec7571bec809f2f0712e7a97b4c853b8b40702d1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50350
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2021-03-17 08:10:35 +00:00
3rdparty Update chromeec submodule to upstream master 2021-03-16 11:18:34 +00:00
configs configs/config.google_volteer.build_test_purposes: Add file 2021-03-03 09:02:39 +00:00
Documentation Documentation: Add deprecation notice for SAR support in VPD 2021-03-17 07:56:39 +00:00
LICENSES treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
payloads payloads/LinuxBoot/u-root: add boot template to u-root 2021-03-14 02:41:56 +00:00
src spd_bin: Replace get_spd_cbfs_rdev() with spd_cbfs_map() 2021-03-17 08:10:35 +00:00
tests tests: Add lib/memrange-test test case 2021-03-15 06:10:24 +00:00
util cbfs: Move stage header into a CBFS attribute 2021-03-17 08:10:00 +00:00
.checkpatch.conf
.clang-format
.editorconfig
.gitignore .gitignore: Ignore .test/.dependencies globally 2020-10-31 18:21:36 +00:00
.gitmodules 3rdparty: Add STM as a submodule 2020-09-30 10:17:03 +00:00
.gitreview
AUTHORS AUTHORS, util/: Drop individual copyright notices 2020-05-09 21:21:32 +00:00
COPYING
gnat.adc treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
MAINTAINERS vendor: mediatek: Add mediatek mt8192 dram initialization code 2021-03-08 01:49:52 +00:00
Makefile Makefile: Add $(xcompile) to specify where to write xcompile 2020-12-23 03:40:35 +00:00
Makefile.inc Makefile.inc: Don't compile bare structs with asan-global=1 2021-03-17 08:04:06 +00:00
README.md
toolchain.inc toolchain.inc: Update and fix the test-toolchain target 2021-02-24 11:29:39 +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.