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Wim Vervoorn a1c259beef security/vboot: Add rw_region_only support to vboot 
In some case where the flash space is limited or when a large payload such as LinuxBoot
is used, the RO region may not be large enough to contain all components that would
normally be added.

This patch adds the possibility to add specific components to the RW regions only in
the same way as the RO_ONLY_SUPPORT does for the RO region.

Please note: this applies only to the items that would normally be added to all regions.
If the payload is directed to the RW region only, a recovery payload needs to be added
to the RO region manually.

BUG=N/A
TEST=build

Change-Id: Ie0df9b5dfc6df4f24efc5582a1aec9ecfb48c44d
Signed-off-by: Wim Vervoorn <wvervoorn@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36544
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
 		2019-11-11 10:38:34 +00:00
3rdparty submodules: Add 3rdparty/amd_blobs 2019-10-31 12:28:38 +00:00
Documentation Documentation: Add some significant 4.11 release notes 2019-11-11 10:31:14 +00:00
LICENSES LICENSES: Add licenses used in the coreboot repo 2019-10-30 08:23:51 +00:00
configs configs/config.facebook_fbg1701: Add config file 2019-11-08 09:19:03 +00:00
payloads libpayload: usbmsc: update return value of CSW transfer 2019-11-11 10:25:24 +00:00
src security/vboot: Add rw_region_only support to vboot 2019-11-11 10:38:34 +00:00
util util/lint/kconfig_lint: Handle glob prefix and suffix 2019-11-06 14:01:00 +00:00
.checkpatch.conf .checkpatch.conf: Ignore a few more warnings 2018-08-13 12:23:24 +00:00
.clang-format lint/clang-format: set to 96 chars per line 2019-06-13 20:14:00 +00:00
.editorconfig Add .editorconfig file 2019-09-10 12:52:18 +00:00
.gitignore .gitignore: Add an exception for Kconfig.debug 2019-10-22 12:57:32 +00:00
.gitmodules submodules: Add 3rdparty/amd_blobs 2019-10-31 12:28:38 +00:00
.gitreview
…
AUTHORS Updated AUTHORS file for src/drivers 2019-10-22 12:55:27 +00:00
COPYING
…
MAINTAINERS MAINTAINERS: Add supermicro/x11-lga1151-series 2019-10-17 19:54:15 +00:00
Makefile Makefile.inc: Add a class 'all' to link files in all stage except SMM 2019-10-30 08:26:54 +00:00
Makefile.inc cpu/qemu-x86: Add x86_64 bootblock support 2019-11-04 11:58:58 +00:00
README.md README: Convert to Markdown 2018-09-16 13:01:58 +00:00
gnat.adc
…
toolchain.inc Split MAYBE_STATIC to _BSS and _NONZERO variants 2019-08-26 20:56:29 +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.