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review.coreboot.org / coreboot / bb3d01a24959c507fa8efb28d654b1e69cc660cc
commitbb3d01a24959c507fa8efb28d654b1e69cc660cc[log] [tgz]
authorLijian Zhao <lijian.zhao@intel.com>Thu Dec 20 21:34:40 2018 -0800
committerDuncan Laurie <dlaurie@chromium.org>Fri Dec 21 22:27:08 2018 +0000
treea99a880810bbac6f57f245096e58af9a70c49d51
parent7ec8d4b8f05434c6705f79bd00863a6dd0b6c836 [diff]
mb/google/sarien: Disable pcie interface for wwan

WWAN chip support 3 interfaces as pci express, USB 2.0 and USB 3.0, the
usgae of Sarien choose to only use USB interface but not over pci
express, so totally disable pci express root port 12.

BUG=b:1246720
TEST=Boot up into OS with WWAN attached, cold boot and warm boot 10
cyles can still device can be listed under lsusb.

Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Change-Id: Ic4da393c0c0d903848111e1c037c2730c86afa7d
Reviewed-on: https://review.coreboot.org/c/30350
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
2 files changed
tree: a99a880810bbac6f57f245096e58af9a70c49d51
  1. 3rdparty/
  2. configs/
  3. Documentation/
  4. payloads/
  5. src/
  6. util/
  7. .checkpatch.conf
  8. .clang-format
  9. .gitignore
  10. .gitmodules
  11. .gitreview
  12. COPYING
  13. gnat.adc
  14. MAINTAINERS
  15. Makefile
  16. Makefile.inc
  17. README.md
  18. 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.