commit | b95530486998889b5afce8df260a694a0333693c | [log] [tgz] |
---|---|---|
author | Subrata Banik <subratabanik@google.com> | Thu Nov 24 23:48:13 2022 +0530 |
committer | Subrata Banik <subratabanik@google.com> | Fri Dec 02 07:52:07 2022 +0000 |
tree | e8306646c6f01062837cd2df69d4a7c2a32e777e | |
parent | adbef6d2b3d46b3deaca49e93eb6e1b905c0ae61 [diff] |
soc/intel/meteorlake: Allow sending late EOP cmd to CSE This patch selects SOC_INTEL_CSE_SEND_EOP_LATE config to let IA common code to skip sending CSE EOP cmd during finalize operation rather uses boot state machine (either payload load or payload boot) to delay in sending EOP cmd to CSE. BUG=b:260041679 TEST=Able to boot to Google/Rex with this patch and observed ~150ms savings in boot time Without this patch: 942:before sending EOP to ME 1,795,702 (354) 943:after sending EOP to ME 1,950,526 (154,824) With this patch: 942:before sending EOP to ME 2,051,406 (35,484) 943:after sending EOP to ME 2,057,583 (6,177) Signed-off-by: Subrata Banik <subratabanik@google.com> Change-Id: I7d44d5eff890ac78e3075d49cc249f740686dd0d Reviewed-on: https://review.coreboot.org/c/coreboot/+/69999 Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com> Reviewed-by: Kapil Porwal <kapilporwal@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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.