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Keith Hui 8bd784eba5 nb/intel/i440bx: Clean up register_values table 
The table of initial i440BX register values has a bitmask that allows
preserving certain bits as they are programmed. This feature has been
unused since day one and probably will never be used. So drop it.

Drop DRB, RPS, PGPOL registers from the table as they will be
programmed during RAM init. These two reductions combined saved ~104
bytes.

Drop unneeded SDRAMC "+0".

Slightly compact a comment block.

TEST=Boot tested on asus/p2b-ls, i440bx config did not change

Change-Id: I020f616455bb671fe284993a488beb6386a03d0d
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40391
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
 		2020-05-02 13:39:20 +00:00
3rdparty Update vboot submodule to upstream master 2020-05-01 06:27:49 +00:00
Documentation documentation: Add documentation ideas for season of docs 2020-05-01 13:47:06 +00:00
LICENSES LICENSES: Add licenses used in the coreboot repo 2019-10-30 08:23:51 +00:00
configs configs/config.facebook_fbg1701: Rename file 2020-04-22 13:48:40 +00:00
payloads libpayload: xhci: Fix CAPREG address calculation 2020-05-02 01:51:22 +00:00
src nb/intel/i440bx: Clean up register_values table 2020-05-02 13:39:20 +00:00
tests tests: Add device/i2c-test test case 2020-05-01 06:33:49 +00:00
util util/intelmetool: Fix 16-bit read/write PCI_COMMAND register 2020-05-01 06:18:46 +00:00
.checkpatch.conf
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.clang-format
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.editorconfig Add .editorconfig file 2019-09-10 12:52:18 +00:00
.gitignore cbfstool: Build vboot library 2020-03-23 08:34:23 +00:00
.gitmodules submodules: Add 3rdparty/amd_blobs 2019-10-31 12:28:38 +00:00
.gitreview
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AUTHORS AUTHORS: Add authors from util/ 2020-03-18 18:22:37 +00:00
COPYING
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MAINTAINERS MAINTAINERS: Update GA-H61M-S2PV 2020-04-16 17:02:28 +00:00
Makefile tests: Add build subsystem for unit testing coreboot 2020-05-01 06:32:47 +00:00
Makefile.inc Makefile: Set FMAP size to 0x200 for non-x86 boards with default fmd 2020-04-20 06:07:08 +00:00
README.md README.md: Remove link to deprecated wiki 2019-11-16 20:39:55 +00:00
gnat.adc
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toolchain.inc Makefile: Remove romcc 2019-12-27 08:59:59 +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

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.