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Kyösti Mälkki e8a3af1069 sb,soc/intel: Apply transitional flag TCO_SPACE_NOT_YET_SPLIT
Tree is inconsistent with the use of TCO register space offsets and
related preprocessor defines. The legacy space was offset from ACPI
PM base by 0x60, but this changed with later platforms. The convenient
way is to define the TCO registers relative to its base address and
subtract 0x60 here, but this change cannot be easily done tree-wide or
in one go.

For the transient period, apply TCO_SPACE_NOT_YET_SPLIT flag until
all platforms use a clean style of tco_{read,write} accessor functions
instead of {read,write}_pmbase16(), or worse, inw/outl().

Change-Id: I16213cdb13f98fccb261004b31e81a9a44cb6e3b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70043
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2022-11-28 10:08:23 +00:00
3rdparty 3rdparty/libgfxinit: Update submodule pointer to 066e52eeaa32 2022-11-26 08:11:52 +00:00
Documentation Docs: Add SPDX headers to Makefiles 2022-11-20 15:24:32 +00:00
LICENSES src/mb: Update unlicensable files with the CC-PDDC SPDX ID 2022-08-13 19:25:12 +00:00
configs configs: Buildtest 64bit amd/picasso 2022-11-16 04:22:29 +00:00
payloads libpayload: Fix compiler warnings 2022-11-21 21:08:30 +00:00
spd spd/lp5: Re-generate the SPD data 2022-10-28 12:06:29 +00:00
src sb,soc/intel: Apply transitional flag TCO_SPACE_NOT_YET_SPLIT 2022-11-28 10:08:23 +00:00
tests cbmem_top_chipset: Change the return value to uintptr_t 2022-11-18 16:00:45 +00:00
util util/testing: Fully clean all but the standard GCC build 2022-11-25 13:55:27 +00:00
.checkpatch.conf checkpatch.conf: Ignore check for pointer comparisons to NULL 2022-09-22 15:13:35 +00:00
.clang-format
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AUTHORS arm/libgcc: Support signed 64-bit division 2022-08-13 17:20:32 +00:00
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MAINTAINERS MAINTAINERS: Make Misc Fixes 2022-10-30 01:48:45 +00:00
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gnat.adc
toolchain.inc coreboot: Add support for include-what-you-use 2022-10-11 14:33:28 +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:

  • 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.