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review.coreboot.org / coreboot / 49236d4430a685ac519a0e885583da0841c8d792
commit49236d4430a685ac519a0e885583da0841c8d792[log] [tgz]
authorPiotr Szymaniak <szarpaj@grubelek.pl>Wed Mar 17 22:09:59 2021 +0100
committerPatrick Georgi <pgeorgi@google.com>Tue Apr 06 06:47:14 2021 +0000
tree7e23dd1048082c3a68a3d6033bac01a0c4ee85dc
parent736a1028fbaef97d32221cadb1f512c9a8960a76 [diff]
mb/lenovo/t420: Copy HDA verbs from vendor firmware

Background story (I think that's what great in opensource -
ppl leave there part of their lives):  ;-)
While trying to fix audio jack not working with coreboot and
Windows 10 with some help from hell__ and nico_h on IRC nico_h
discovered that t420 and t430 hda_verb.c are the same:
<nico_h> oddly, in coreboot source T420 and T430 have the same
  numbers for very different codecs... I suspect copy-pasta
Difference between /sys/class/sound/cardX/hwCXDY/init_pin_config
in vendor BIOS helped with the updated config. Connecting audio
jack now works flawless both in Linux and Windows.

Audio-related keyboard buttons: volup, voldown, mute works fine
both in Linux (Debian-based) and Windows 10. mutemic button works
(tested ie. with xev) but both in Linux and Windows 10 wont light
up or makes any effect.

+-----------------------------------+
|   init_pin_config dump from:      |
+----= VENDOR =---+---= coreboot =--+
| 0x19 0x04211040 | 0x19 0x04211040 |
| 0x1a 0x61a19050 | 0x1a 0x61a19050 |
| 0x1b 0x04a11060 | 0x1b 0x04a11060 |
| 0x1c 0x6121401f | 0x1c 0x6121401f |
| 0x1d 0x40f001f0 | 0x1d 0x40f001f0 |
| 0x1e 0x40f001f0 | 0x1e 0x40f001f0 |
| 0x1f 0x90170110 | 0x1f 0x90170110 |
| 0x20 0x40f001f0 | 0x20 0x40f001f0 |
| 0x22 0x40f001f0 | 0x22 0x40f001f0 |
| 0x23 0x90a60170 | 0x23 0x90a60170 |
+-----------------+-----------------+

Tested-by: Piotr Szymaniak

Signed-off-by: Piotr Szymaniak <szarpaj@grubelek.pl>
Change-Id: Ie5eba84e5ea590b7db00e189cd68e714bee7e410
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51612
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed
tree: 7e23dd1048082c3a68a3d6033bac01a0c4ee85dc
  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.