commit | 175e4c59a0025dc4636669734ae4ed756cb1af5f | [log] [tgz] |
---|---|---|
author | Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com> | Thu Feb 11 18:25:43 2021 -0600 |
committer | Martin Roth <martinroth@google.com> | Wed Feb 17 17:15:07 2021 +0000 |
tree | c38b103ddc555e36b8c009dc7d0c3f7f52fffa07 | |
parent | 7a92e3895f84daab1c9051eede1d8a33446321a5 [diff] |
drivers/intel/fsp2_0: Allow larger FSPS UPD than expected in coreboot Enforcing the exact match of FSPS UPD block size between FSP and coreboot mandates simultaneous updates to coreboot and FSP repos. Allow coreboot to proceed if its UPD structure is smaller than FSP one. This usually indicates that FSPS has an updated (larger) UPD structure which should be soon matched/updated on the coreboot side to keep them in sync. While this is an undesirable situation that should be corrected ASAP, it is safe from coreboot perspective. It is safe (as long as default values in FSP UPD are sane enough to boot) because FSPS UPD buffer is allocated on the heap with the size specified in FSPS (larger) and filled with FSPS default values. This allows FSP UPD changes to be submitted first followed by changes in coreboot repo. Note that this only applies to the case when entire FSPS UPD structure grows which should be rare as FSP should allocate enough reserve space, anticipating future expansion, to keep the structure from growing when new members are added. BUG=b:171234996 BRANCH=Zork TEST=build Trembyle Change-Id: I557fd3a1f208b5b444ccf76e1552e74ecf4decad Signed-off-by: Nikolai Vyssotski <nikolai.vyssotski@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50576 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Martin Roth <martinroth@google.com>
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.
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.
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
ANY_TOOLCHAIN
Kconfig option if you're feeling lucky (no support in this case).Optional:
make menuconfig
and make nconfig
)Please consult https://www.coreboot.org/Build_HOWTO for details.
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.
Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:
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.