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Eugene Myers 34010e8adb security/intel/stm: Make sure stm_resource_heap is consistent
When a parallel SMM relocation is being done, there is a good chance
that the value for stm_resource_heap is not consistent across processors.
Rather than holding (via a lock) processors until this value is set and
then flushing the cache so that all processors see the same value, this
solution moves the code such that all processors set it, thus maintaining
parallelism and keeping the code simple.

Change-Id: I2e5385c47124adcd99803337167984b6307af860
Signed-off-by: Eugene Myers <edmyers@tycho.nsa.gov>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55629
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2023-06-10 03:21:23 +00:00
3rdparty 3rdparty/intel-microcode: Update to 2020118 release 2021-02-22 07:35:05 +00:00
Documentation Documentation: Add OCP Mono Lake mainboard 2021-10-04 18:41:50 +00:00
LICENSES LICENSES: Add licenses used in the coreboot repo 2019-10-30 08:23:51 +00:00
configs security/intel/stm: Add STM support 2021-02-22 07:33:43 +00:00
payloads mmio: Fix buffer_to_fifo32() order of arguments 2019-11-19 06:17:04 +00:00
src security/intel/stm: Make sure stm_resource_heap is consistent 2023-06-10 03:21:23 +00:00
util util/chromeos: Indent code blocks instead of using ``` 2019-11-19 13:28:25 +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
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.gitignore .gitignore: Add an exception for Kconfig.debug 2019-10-22 12:57:32 +00:00
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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 Makefile.inc: Replace linker flag -nostartfiles with --nmagic 2022-02-22 15:26:23 +00:00
README.md README.md: Remove link to deprecated wiki 2019-11-16 20:39:55 +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

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.