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Felix Held 56b037b857 soc/amd/*/northbridge,root_complex: simplify mmconf_resource index 
In the northbridge's and root complex' read_resources function, the
mmconf resource used the number of the MMIO_CONF_BASE MSR as index which
might be misleading. Instead use idx++ as a unique index for this
resource.

TEST=Resource allocator doesn't complain and no related warnings or
errors in dmesg. The update_constraints console output changes like
expected:

Before: PCI: 00:00.0 c0010058 base f8000000 limit fbffffff mem (fixed)
After: PCI: 00:00.0 06 base f8000000 limit fbffffff mem (fixed)

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Id66c6153fad86bed36db7bd2455075f4a0850750
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62545
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
 		2022-03-03 22:45:02 +00:00
3rdparty Update fsp submodule to upstream master 2022-03-01 01:53:17 +00:00
Documentation Documentation/mainboard: Add QEMU POWER9 to index site 2022-03-02 17:47:57 +00:00
LICENSES treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
configs src/mainboard/emulation/qemu-power9/*: add QEMU POWER9 mainboard 2022-02-11 20:14:55 +00:00
payloads libpayload/bin/lpgcc: Make lpgcc provide TPM configuration for vboot 2022-03-03 22:38:59 +00:00
spd spd/lp4x: Generate initial SPD for MT53E2G32D4NQ-046 WT:C 2022-02-24 00:31:25 +00:00
src soc/amd/*/northbridge,root_complex: simplify mmconf_resource index 2022-03-03 22:45:02 +00:00
tests tests/include: Move EMPTY_WRAP() macro to tests/include/test.h 2022-02-10 21:16:49 +00:00
util util/docker/coreboot-jenkins-node: Alphabetize installed tools 2022-03-02 13:09:55 +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

Copyright and License

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.