|author||Maulik V Vaghela <email@example.com>||Wed Feb 27 12:06:26 2019 +0530|
|committer||Patrick Georgi <firstname.lastname@example.org>||Thu Feb 28 13:46:47 2019 +0000|
mb/google/hatch: Add GPIO programming for GPP_C0 to GPP_C7 coreboot did not program all GPIOs from C0 to C7 correctly which are SMBUS GPIO. Some of the GPIOs are left in default mode which is native function but we need to configure as GPIO mode and provide proper configuration as per schematic. After fixing GPIO, CSME power gating issue also gets fixed since SMBUS was not getting idle due to GPIO configuration and CSME was not getting power gated due to SMBUS. BUG=b:123702553 BRANCH=none TEST=Check on hatch board. CSME was not getting power gated for s0ix. After applying this patch CSME is power gated now Change-Id: I5c6b9310dcc7bade0023abd5524781ce71df28be Signed-off-by: Maulik V Vaghela <email@example.com> Reviewed-on: https://review.coreboot.org/c/31640 Tested-by: build bot (Jenkins) <firstname.lastname@example.org> Reviewed-by: Furquan Shaikh <email@example.com>
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_TOOLCHAINKconfig option if you're feeling lucky (no support in this case).
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:
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.