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Karthikeyan Ramasubramanian ad7c33abd2 soc/amd/cezanne: Add support to perform early EC sync
Ideally we would like to perform EC Software Sync in payload. But with
the hardware requirement (EC_IN_RW) and firmware requirement (TPM
command to get EC execution environment) not met yet, adding the support
to perform early EC Software sync. With EFS2 enabled, this will also
help cr50 to set the boot mode as NORMAL instead of NO_BOOT.

BUG=None
TEST=Build and Boot to OS in Guybrush. Ensure that the EC software sync
is successfully complete.
CBFS: Found 'ecrw.hash' @0x50400 size 0x20 in mcache @0x020171ec
VB2:check_ec_hash() Hexp RW(active): 2dd8dbb78d0c626358a626037973a3d81982f88f3f38e7f759039bf84e05ccc6
VB2:check_ec_hash()            Hmir: 2dd8dbb78d0c626358a626037973a3d81982f88f3f38e7f759039bf84e05ccc6
<snip>
VB2:check_ec_hash() Heff RW(active): 2dd8dbb78d0c626358a626037973a3d81982f88f3f38e7f759039bf84e05ccc6
VB2:sync_ec() select_rw=RW(active)

Change-Id: I820e651c6b22a833fef6f17a4ceb5a8cfb6f1616
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52008
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
2021-04-02 16:25:03 +00:00
3rdparty Update amd_blobs submodule to upstream master 2021-03-28 16:06:19 +00:00
Documentation mb/purism/librem_14: Move/fix touchpad interrupt GPIO 2021-03-28 16:05:57 +00:00
LICENSES treewide: Remove trailing whitespace 2021-02-17 17:30:05 +00:00
configs mb/system76/gaze15: Add System76 Gazelle 15 2021-03-24 07:53:40 +00:00
payloads payloads/LinuxBoot/u-root: add boot template to u-root 2021-03-14 02:41:56 +00:00
src soc/amd/cezanne: Add support to perform early EC sync 2021-04-02 16:25:03 +00:00
tests tests/include/tests/test.h: Add TEST_REGION_UNALLOCATED 2021-03-28 16:00:01 +00:00
util util: Add DDR4 generic SPD for H4AAG165WB-BCWE 2021-03-22 11:26:40 +00:00
.checkpatch.conf
.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: Ignore .test/.dependencies globally 2020-10-31 18:21:36 +00:00
.gitmodules 3rdparty: Add STM as a submodule 2020-09-30 10:17:03 +00:00
.gitreview
AUTHORS AUTHORS, util/: Drop individual copyright notices 2020-05-09 21:21:32 +00:00
COPYING
MAINTAINERS vendor: mediatek: Add mediatek mt8192 dram initialization code 2021-03-08 01:49:52 +00:00
Makefile Makefile.inc: Use `additional-dirs` for $(objcbfs), $(objgenerated) 2021-03-27 19:34:58 +00:00
Makefile.inc Makefile.inc: Use `additional-dirs` for $(objcbfs), $(objgenerated) 2021-03-27 19:34:58 +00:00
README.md README.md: Remove link to deprecated wiki 2019-11-16 20:39:55 +00:00
gnat.adc treewide: Remove "this file is part of" lines 2020-05-11 17:11:40 +00:00
toolchain.inc toolchain.inc: Update and fix the test-toolchain target 2021-02-24 11:29:39 +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.