commit | 5e5e789f9b115f7fb1e7c453cdf20df088ac893d | [log] [tgz] |
---|---|---|
author | Chris Morgan <macromorgan@hotmail.com> | Fri Feb 07 09:40:42 2020 -0600 |
committer | Patrick Georgi <pgeorgi@google.com> | Fri Mar 06 07:54:26 2020 +0000 |
tree | 0b4a2bd0c1658ed770485947b468073450345ae0 | |
parent | efc4be6bf1b132f8d280b7b840049ea6677405d3 [diff] |
nb/intel/haswell/peg: Add PEG driver stub This is a port of https://review.coreboot.org/c/coreboot/+/22337 to the Haswell northbridge. This code is necessary to support the dGPU of the t440p. Code was cut and pasted from Sandy Bridge with vendor IDs updated to the correct Haswell values. Tested on t440p with dGPU on Ubuntu 18.04.4 with 5.3.0-28 kernel. Without patches dmesg reports Nouveau is unable to read the VBIOS of the dGPU as it has an invalid checksum (I checked that the ROM in CBFS is correct). With this patch DRM works correctly with both the Nouveau driver and the Nvidia proprietary driver. Windows 10 1909 also tested but generates bluescreen once GPU driver is loaded. Change-Id: Ie5f089fb6fd774e6c61f4f9281e2945bd44edf27 Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38743 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.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.