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review.coreboot.org / coreboot / aa69e2859df03229e4d48c36d914666544ba8eec
commitaa69e2859df03229e4d48c36d914666544ba8eec[log] [tgz]
authorPuthikorn Voravootivat <puthik@chromium.org>Fri Aug 31 11:05:40 2018 -0700
committerFurquan Shaikh <furquan@google.com>Wed Sep 26 21:22:16 2018 +0000
treef831b150b3d4ac22bc34a64ca1a7e313d6bd3eb6
parent8ac6a19155b2e65dec83032e9b6ce9aa9a9e121b [diff]
mb/google/poppy/variants/nocturne: Update DPTF settings

The previous does not work well enough when testing with
high ambient temperature. Update DPTF settings to make
it work better.

List of tweaks:
1. Raise DRAM Critical temperature from 48C to 55C
   Note that there are mechanisms in EC that complement
   this because of DPTF limitation that we can't have
   multiple passive temperatures.
2. Lower response time for DRAM temp sensor from 60s to 5s.
3. Increase throttle priority to the charger when DRAM hit
   passive temperature from 100 to 200.

BUG=b:112550414
BRANCH=None
TEST=Manually tested by thermal team.

Change-Id: Idf7efa76b2c6085cf97aa9f65c6ce066e8cff99a
Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org>
Reviewed-on: https://review.coreboot.org/28738
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
1 file changed
tree: f831b150b3d4ac22bc34a64ca1a7e313d6bd3eb6
  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.