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cos / mirrors / cros / chromiumos / third_party / coreboot / refs/heads/stabilize-14695.85.B
commit02ced5736bb9a850e691ec3afb029739535cdb98[log] [tgz]
authorArthur Heymans <arthur@aheymans.xyz>Wed Nov 27 17:34:37 2019 +0100
committerChromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Apr 13 01:26:53 2022 +0000
tree0fdf0b0895233be6a9c3201168052f4f78bf09ec
parentda4d0226c9da9b582e381b649533bc4b4fe0f4cf [diff]
UPSTREAM: cpu/x86/smm: Add sinkhole mitigation to relocatable smmstub

The sinkhole exploit exists in placing the lapic base such that it
messes with GDT. This can be mitigated by checking the lapic MSR
against the current program counter.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37289
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Change-Id: I49927c4f4218552b732bac8aae551d845ad7f079
GitOrigin-RevId: 95af254e116802490481c6293ae752f5b61e561b
Change-Id: Ia6f8fb8beac116b9ee9ba7dd0df30cbf5a598c03
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/3581091
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
1 file changed
tree: 0fdf0b0895233be6a9c3201168052f4f78bf09ec
  1. configs/
  2. Documentation/
  3. LICENSES/
  4. payloads/
  5. spd/
  6. src/
  7. tests/
  8. util/
  9. .checkpatch.conf
  10. .clang-format
  11. .editorconfig
  12. .gitignore
  13. .gitmodules
  14. .gitreview
  15. .mailmap
  16. AUTHORS
  17. COPYING
  18. gnat.adc
  19. MAINTAINERS
  20. Makefile
  21. Makefile.inc
  22. OWNERS
  23. PRESUBMIT.cfg
  24. README.md
  25. toolchain.inc
  26. unblocked_terms.txt
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.