commit | f7f1f1672f37faf5e2157c4e0edb20e84519e732 | [log] [tgz] |
---|---|---|
author | Felix Held <felix.held@amd.corp-partner.google.com> | Mon Sep 20 21:12:22 2021 +0200 |
committer | Felix Held <felix-coreboot@felixheld.de> | Wed Sep 22 15:54:52 2021 +0000 |
tree | 953a2651254bffed7e24e8757455bf6f971237f6 | |
parent | 67772d27a6d079a0af971bde81a27c4934268095 [diff] |
soc/amd/common/block/gpio_banks: Rework GPIO pad configuration Before this patch, gpio_configure_pads_with_override called program_gpios once for each GPIO that needed to be configured which resulted in base_num_pads - 1 unneeded master_switch_set/ master_switch_clr sequences for the gpio_configure_pads_with_override call. Instead implement gpio_configure_pads_with_override as the more generic function and program_gpios as a special case of that which passes an empty override configuration and override pad number to gpio_configure_pads_with_override. TEST=GPIO configuration and multiplexer register values are the same for all GPIOs on google/guybrush right before jumping to the payload before and after the patch. Change-Id: Ia8e47b2a278a1887db5406c1f863ddafa6a68675 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43050 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> 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:
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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.