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review.coreboot.org / coreboot / e0c738c3df3b26fc5bedf8c876146cae150b5256
commite0c738c3df3b26fc5bedf8c876146cae150b5256[log] [tgz]
authorFelix Held <felix-coreboot@felixheld.de>Thu Mar 31 01:29:32 2022 +0200
committerFelix Held <felix-coreboot@felixheld.de>Fri Apr 01 14:31:55 2022 +0000
tree6b0f5020d82544822ba80238bf4ab685dc71216e
parent3363db01735e9c9f59d19093a1e059139ae90d78 [diff]
soc/amd/sabrina/i2c: handle all I2C pads as I23C pad type

Contradicting the PPR #57243 version 1.56, the I2C3 pad control register
in the MISC ACPIMMIO region is the same new I23C pad type as the
corresponding registers for I2C0..2 and not the older I2C pad control
register type used on Picasso and Cezanne. All I2C pads being of the new
I23C type is in line with the GPIOMUX settings for the pins used by
I2C0..3 that can alternatively connect the pins to an I3C controller.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I51b0ddf8ba2ccfee823e3d4d26a77b11825b1029
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63233
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2 files changed
tree: 6b0f5020d82544822ba80238bf4ab685dc71216e
  1. 3rdparty/
  2. configs/
  3. Documentation/
  4. LICENSES/
  5. payloads/
  6. spd/
  7. src/
  8. tests/
  9. util/
  10. .checkpatch.conf
  11. .clang-format
  12. .editorconfig
  13. .gitignore
  14. .gitmodules
  15. .gitreview
  16. .mailmap
  17. AUTHORS
  18. COPYING
  19. gnat.adc
  20. MAINTAINERS
  21. Makefile
  22. Makefile.inc
  23. README.md
  24. toolchain.inc
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.