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Martin Roth 6a62cc85e6 mb/google/zork: Set S0IX_SLP_L high in S0, low in S3
This is used as a signal to show the system state.  It hadn't been used
up to this point as we're not currently using S0i3, but the fingerprint
sensor will use it to go into a low power mode, so set it appropriately
on Trembyle.  Dalboz devices don't use the FPMCU, but set there as well
so that the state matches.

BUG=b:174695987
TEST=Verify GPIO state in S0 and S3 with the EC
BRANCH=Zork

Signed-off-by: Martin Roth <martinroth@chromium.org>
Change-Id: Ibc725905909830d44f77c2498a26edf6d7a3dc05
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48255
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Vincent Palatin <vpalatin@google.com>
Reviewed-by: Rob Barnes <robbarnes@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-12-03 23:44:28 +00:00
3rdparty 3rdparty/amd_blobs: Update pointer for picasso SMU and FSP 2020-12-02 15:20:35 +00:00
Documentation docs/mb/supermicro/x11-lga-series: Update documentation 2020-11-27 20:49:16 +00:00
LICENSES drivers: Use SPDX identifiers 2020-05-25 22:19:21 +00:00
configs configs: Add a sample config for scaleway tagada 2020-11-20 00:45:37 +00:00
payloads libpayload/usb: Add format string checking to usb_debug 2020-11-22 22:34:55 +00:00
src mb/google/zork: Set S0IX_SLP_L high in S0, low in S3 2020-12-03 23:44:28 +00:00
tests edist-test: Fix _Static_assert missing message string 2020-12-02 10:38:25 +00:00
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README.md

coreboot README

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.

Payloads

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.

Supported Hardware

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

Build Requirements

  • make
  • gcc / g++ Because Linux distribution compilers tend to use lots of patches. coreboot does lots of "unusual" things in its build system, some of which break due to those patches, sometimes by gcc aborting, sometimes - and that's worse - by generating broken object code. Two options: use our toolchain (eg. make crosstools-i386) or enable the ANY_TOOLCHAIN Kconfig option if you're feeling lucky (no support in this case).
  • iasl (for targets with ACPI support)
  • pkg-config
  • libssl-dev (openssl)

Optional:

  • doxygen (for generating/viewing documentation)
  • gdb (for better debugging facilities on some targets)
  • ncurses (for make menuconfig and make nconfig)
  • flex and bison (for regenerating parsers)

Building coreboot

Please consult https://www.coreboot.org/Build_HOWTO for details.

Testing coreboot Without Modifying Your Hardware

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.

Website and Mailing List

Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:

https://www.coreboot.org

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.