commit | 2526be8db381addd398afae55370127f3a747cdc | [log] [tgz] |
---|---|---|
author | Karthikeyan Ramasubramanian <kramasub@google.com> | Tue Oct 05 13:46:40 2021 -0600 |
committer | Felix Held <felix-coreboot@felixheld.de> | Wed Oct 13 17:39:30 2021 +0000 |
tree | 445c0ea8847b5b8a7137e5528ce1c727319924bf | |
parent | 5705b63a08d28ddf8c5a22600e19aa8dd8513614 [diff] |
soc/amd/common/block/spi: Support fast speed override Add support to override SPI ROM fast speed based on board version. This will allow boards to start at lower speeds during bringup and then switch to higher speeds after assessing the signal integrity. Also implement a default no-op override. BUG=None TEST=Build and boot to OS in Guybrush. Perform S5->S0, G3->S0, warm reset and suspend/resume cycles for 50 iterations each. Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Change-Id: Ia8ff3b3bdb53fee142527ae63aa7785945909304 Reviewed-on: https://review.coreboot.org/c/coreboot/+/58116 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Raul Rangel <rrangel@chromium.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.