commit | 214c719eed83967b8f0564feca65eebb3d83f5bc | [log] [tgz] |
---|---|---|
author | Aamir Bohra <aamir.bohra@intel.com> | Mon May 18 12:17:45 2020 +0530 |
committer | Patrick Georgi <pgeorgi@google.com> | Wed Jun 10 18:30:59 2020 +0000 |
tree | 2d7703ccd8ba66fc7b3d635894b8ea1b6ad4f486 | |
parent | b468d569f6acc2815158ec5ce7d54e20ec98a89b [diff] |
mb/google/dedede: Add mainboard acpi support for GPIO PM configuration Setting the default values for GPIO community power management, causes issues in detecting TPM interrupts. So to avoid that GPIO PM has to be disabled in devicetree. But for S0ix it is needed. This patch implements a workaround in ASL code to enable GPIO PM on S0ix entry and disable it on S0ix exit. This patch adds the following three platform specific methods. 1. MS0X to enable power management features for GPIO communities on low power mode entry and disables it on exit. 2. MPTS to enable power management features for GPIO communities when preparing to sleep. 3. MWAK to disable power management features for GPIO communities on waking up. BUG=b:153847814 TEST=Verify S0ix is working. GPIO PM configuration is upadated on low power mode entry and exit. Change-Id: I7225b78ab2ac5bf17f93230cd85cd21e836d807d Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41502 Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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.