commit | 1a73eb08e79b4a53702ff9e9103bb3352391892b | [log] [tgz] |
---|---|---|
author | Tristan Corrick <tristan@corrick.kiwi> | Wed Oct 31 02:27:29 2018 +1300 |
committer | Nico Huber <nico.h@gmx.de> | Thu Nov 01 22:23:52 2018 +0000 |
tree | db1a824ac9abb5ee78f96bda5dabc7dd2d3dc2f1 | |
parent | fdf907e4405e5df84e9d5a29735e0506782d9c6d [diff] |
nb/intel/haswell/gma: Support boards that have DDI E connected On an ASRock H81M-HDS neither libgfxinit, nor Linux, is able to initialise the display when lanes are not configured to be shared between DDI A and DDI E. Intel's reference manual [1] states that the decision to share lanes between DDI A and DDI E is "based on board configuration". Hence, add a new field to the devicetree that boards can set. All existing Haswell boards have this unset, thus taking a value of 0, so there is no change to existing behaviour. [1]: Intel Open Source Graphics Programmer's Reference Manual (PRM) Volume 2c: Command Reference: Registers (Haswell) https://01.org/linuxgraphics/documentation/hardware-specification-prms/2013-intel-core-processor-family Change-Id: I6f7832293215d2b53e31b0a5c985e6098eb72f1b Signed-off-by: Tristan Corrick <tristan@corrick.kiwi> Reviewed-on: https://review.coreboot.org/29385 Reviewed-by: Nico Huber <nico.h@gmx.de> 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.