|author||Edward O'Callaghan <firstname.lastname@example.org>||Mon Jan 20 18:21:13 2020 +1100|
|committer||Edward O'Callaghan <email@example.com>||Fri Feb 07 03:33:43 2020 +0000|
mainboard/hatch: Fix puff DP output on cold boots Wait for HPD DP unless HDMI is plugged. Some Type-C monitors do not immediately assert HPD. If we continue to boot without HPD asserted, Depthcharge fails to show pictures on a monitor even if HPD is asserted later. Similar to that of b:72387533 however our DP&HDMI are beind a MST. See commit d182b63347c744c on how this was done for mainboard/fizz. BUG=b:147992492 BRANCH=none TEST=Verify firmware screen is displayed even when a type-c monitor does not immediately assert HPD. Verify if HDMI monitor is connected, AP does not wait (and firmware screen is displayed on HDMI monitor). Change-Id: I19d40056e58f1737f87fd07d62b07a723a63d610 Signed-off-by: Edward O'Callaghan <firstname.lastname@example.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38475 Tested-by: build bot (Jenkins) <email@example.com> Reviewed-by: Daisuke Nojiri <firstname.lastname@example.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_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.