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Karthikeyan Ramasubramanian 44e449b15c mb/google/skyrim/var/skyrim: Add supported memory parts
Add supported memory parts and generate the associated DRAM part ID.
Also for MT62F2G32D8DR-031 WT:B memory part, add a custom SPD that
configures the DRAM speed at 5500 MHz. Use this custom SPD until that
part can operate at full speed (i.e. 6400 MHz).

BUG=None
TEST=Build Skyrim.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: Id87e79f5d6187d57d74487841c09aa309f1450b4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63599
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Robert Zieba <robertzieba@google.com>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
2022-04-14 22:25:05 +00:00
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configs src/mainboard/emulation/qemu-power9/*: add QEMU POWER9 mainboard 2022-02-11 20:14:55 +00:00
payloads payloads/LinuxBoot: Fix u-root branch 2022-04-13 14:30:37 +00:00
spd spd/lp5: Add new part MT62F2G32D8DR-031 2022-03-10 15:16:52 +00:00
src mb/google/skyrim/var/skyrim: Add supported memory parts 2022-04-14 22:25:05 +00:00
tests tests/lib: Add space before single line comment termination 2022-03-27 15:33:39 +00:00
util util/apcb/apcb_v3_edit.py: Edit APCB based on different SPD magic 2022-04-14 22:24:09 +00:00
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README.md
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toolchain.inc build system: immediately report what users are supposed to look into 2021-10-18 16:39:25 +00:00

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.