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Ronak Kanabar 69a9565339 soc/intel/cannonlake: SoC specific microcode update check 
For CFL and WHL, Microcode is being loaded from FIT. Both
supports the PRMRR/SGX feature. If This is supported the FIT
microcode load will set the msr (0x08b) with the Patch id one
less than the id in the microcode binary. This results in
Microcode getting reloaded again in bootblock and ramstage.
Avoid the microcode reload by checking for PRMRR support.
CFL and WHL CPU die are based on KBL CPU so we need to have
this check, where CNL CPU die is not based on KBL CPU so
skip this check for CNL.

BUG=b:124126405
Signed-off-by: Ronak Kanabar <ronak.kanabar@intel.com>

Change-Id: I3311a7413d27044f9c819179e5b0cb9a67b46955
Reviewed-on: https://review.coreboot.org/c/31492
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
 		2019-02-21 19:10:23 +00:00
3rdparty Update vboot submodule to upstream master 2019-01-16 06:27:49 +00:00
Documentation Documentation: take the sting out of the requirements 2019-02-20 16:15:05 +00:00
configs mb/intel/galileo: Drop the FSP1.1 option 2019-02-11 12:28:52 +00:00
payloads libpayload/sys/types.h: Add definition for off_t 2019-02-13 12:03:03 +00:00
src soc/intel/cannonlake: SoC specific microcode update check 2019-02-21 19:10:23 +00:00
util ACPI: Correct asl_compiler_revision value 2019-02-21 19:07:31 +00:00
.checkpatch.conf .checkpatch.conf: Ignore a few more warnings 2018-08-13 12:23:24 +00:00
.clang-format clang-format: change it to better match our style 2018-07-31 23:25:29 +00:00
.gitignore util/bucts: Add tool to manipulate BUC.TS bit on Intel targets 2018-11-19 08:19:16 +00:00
.gitmodules submodules: add FSP mirror as non-default submodule 2018-09-02 03:07:50 +00:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
MAINTAINERS MAINTAINERS: Tag denverton-ns as Odd Fixes 2019-01-09 10:00:46 +00:00
Makefile Hook up Kconfig Ada spec file 2019-02-06 16:20:35 +00:00
Makefile.inc Makefile.inc: Keep .asl intermediates 2019-02-21 16:05:14 +00:00
README.md README: Convert to Markdown 2018-09-16 13:01:58 +00:00
gnat.adc gnat.adc: Do not generate assertion code for Refined_Post 2016-10-29 01:33:31 +02:00
toolchain.inc arch/power8: Rename to ppc64 2018-11-30 20:02:17 +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.