commit | b7b5115360baa1ea0b9e8e554a12e9ac6da8fe87 | [log] [tgz] |
---|---|---|
author | Tim Wawrzynczak <twawrzynczak@chromium.org> | Thu Jul 01 08:38:30 2021 -0600 |
committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | Fri Sep 10 21:54:23 2021 +0000 |
tree | ad8b7f3c03feb71c99150dd43c12f58f71fcce9f | |
parent | 72d94026ce6ec2c6b363b70652e97c0041a70776 [diff] |
cannonlake mainboards: Set PMC as hidden in devicetree FSP-S hides the PMC from the PCI bus when it runs, but there are still initialization steps coreboot programs for the PMC. Therefore, change all of the cannonlake mainboards to set the PMC as hidden in the devicetree, which means the device will be skipped during enumeration, but device callbacks are still issued as if the device were enabled. TEST=Ran full patch train on google/dratini, disassembled SSDT and the PEPD device matches what is in pep.asl. Also verified via dmesg that the INT33A1 device is still initialized by the kernel. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: Ib4a20ce9075ce7653388a5d3e281fe774bf89355 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56008 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
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.
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.
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
ANY_TOOLCHAIN
Kconfig option if you're feeling lucky (no support in this case).Optional:
make menuconfig
and make nconfig
)Please consult https://www.coreboot.org/Build_HOWTO for details.
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.
Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:
You can contact us directly on the coreboot mailing list:
https://www.coreboot.org/Mailinglist
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.