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review.coreboot.org / coreboot / 09f767dc2757c538ab3fdf2fb76f91131313e062
commit09f767dc2757c538ab3fdf2fb76f91131313e062[log] [tgz]
authorFelix Held <felix-coreboot@felixheld.de>Wed Aug 04 19:33:51 2021 +0200
committerFelix Held <felix-coreboot@felixheld.de>Sat Sep 04 02:47:24 2021 +0000
tree69796beb57f8fff1ab8a552301b43c955be4c42b
parent2709cff57da4784d08f67fe95054f278fcd4411b [diff]
sb/amd/pi/hudson/soc/gpio: add SOC_GPIO_TOTAL_PINS definition

EGPIO132 is the last documented GPIO on the GPIO controller in the NDA
version of the BKDG for AMD Family 16h Models 30h-3Fh Processors (#52740
Rev 3.06) which is the only SoC using this code, so define
SOC_GPIO_TOTAL_PINS as 133, since the internal GPIO numbers are
0-indexed. This definition will be needed the subsequent patch that'll
add the remote GPIO support to the common AMD GPIO code to make sure
that the compiler can optimize out the code path needed to support the
remote GPIO access which isn't available on this platform anyway.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I877d462c5e753c9bbb3461dbb10cde2adc2cb12c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56809
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed
tree: 69796beb57f8fff1ab8a552301b43c955be4c42b
  1. 3rdparty/
  2. configs/
  3. Documentation/
  4. LICENSES/
  5. payloads/
  6. src/
  7. tests/
  8. util/
  9. .checkpatch.conf
  10. .clang-format
  11. .editorconfig
  12. .gitignore
  13. .gitmodules
  14. .gitreview
  15. AUTHORS
  16. COPYING
  17. gnat.adc
  18. MAINTAINERS
  19. Makefile
  20. Makefile.inc
  21. README.md
  22. 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.