Gitiles
Code Review Sign In
review.coreboot.org / coreboot / b5e729c129ab505d3ae74474d8b67a64f5231431
commitb5e729c129ab505d3ae74474d8b67a64f5231431[log] [tgz]
authorMichał Żygowski <michal.zygowski@3mdeb.com>Mon May 09 18:22:39 2022 +0200
committerFelix Held <felix-coreboot@felixheld.de>Fri Jun 24 21:56:01 2022 +0000
treec54ba3cbc4e0737a6a23c385550f8ec45a00e65a
parentbe5e7851b8755aad9c63086a853bd72175158b85 [diff]
drivers/mrc_cache: Do not verify TPM MRC hash if secdata is mocked

Having PTT means mocking secdata, so saving/reading the hash always
succeeds, but there is no data stored/read from/to TPM. The code
comparing MRC hashes did not care if secdata mocking was enabled
and failed during hash comparison with invalid data. This broke the
fastboot even if the MRC cache data was filled and correctly
checksummed. If mocking is enabled simply fallback to checksum
computing to proceed with fastboot.

TEST=Boot MSI PRO Z690-A WIFI DDR4 in fastboot mode with PTT and vboot
enabled.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: Ic0cf04b129fe1c5e94cd8a803bb21aa350c3f8da
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64221
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed
tree: c54ba3cbc4e0737a6a23c385550f8ec45a00e65a
  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:

  • 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.