commit | c636142b025f3026d0ff4dcd6ed4a369b3b93f3d | [log] [tgz] |
---|---|---|
author | Matt DeVillier <matt.devillier@gmail.com> | Mon Mar 28 22:35:42 2022 -0500 |
committer | Paul Fagerburg <pfagerburg@chromium.org> | Tue May 31 13:44:02 2022 +0000 |
tree | aeb74aea6e7d44a7fbe7e83b250f6bc657763ab0 | |
parent | ee849ba62574ac52e04d80f774a374d9b7558f67 [diff] |
drivers/i2c/generic: Add support for i2c device detection Add 'detect' flag which can be attached to devices which may or may not be present at runtime, and for which coreboot should probe the i2c bus to confirm device presence prior to adding an entry for it in the SSDT. This is useful for boards which may utilize touchpads/touchscreens from multiple vendors, so that only the device(s) present are added to the SSDT. This relieves the burden from the OS to detect/probe if a device is actually present and allows the OS to trust the ACPI _STA value. Change-Id: I1a4169ed6416d544773a37d29cdcc154d3c28519 Signed-off-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/63211 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin L Roth <gaumless@tutanota.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@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.