Attention is currently required from: Marx Wang, Tim Wawrzynczak, Rizwan Qureshi, Sridhar Siricilla, Balaji Manigandan, Nick Vaccaro, Patrick Rudolph. Hello Marx Wang, build bot (Jenkins), Tim Wawrzynczak, Rizwan Qureshi, Sridhar Siricilla, Balaji Manigandan, Nick Vaccaro, Kane Chen, Patrick Rudolph,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/59685
to look at the new patch set (#13).
Change subject: soc/intel/common: Add support for CSE IOM/NPHY sub-parition update ......................................................................
soc/intel/common: Add support for CSE IOM/NPHY sub-parition update
This patch adds the following support to coreboot 1. Kconfig to add IOM/NPHY in the COREBOOT/FW_MAIN_A/FW_MAIN_B partition of BIOS 2. Helper functions to support update.
Pre-requisites to enable IOM/NPHY FW Update: 1.NPHY and IOM blobs have to be added to added COREBOOT, FW_MAIN_A and FW_MAIN_B through board configuration files. CONFIG_SOC_INTEL_CSE_IOM_CBFS_FILE: IOM blob Path SOC_INTEL_CSE_NPHY_CBFS_FILE: NPHY blob path
2.Enable CONFIG_CSE_SUB_PARTITION_UPDATE to enable CSE sub-partition NPHY/IOM update.
coreboot follows below procedure to update NPHY and IOM: NPHY Update: 1.coreboot will navigate through the CSE region, identify the CSE’s NPHY FW version and BIOS NPHY version. 2.Compare both versions, if there is a difference, CSE will trigger an NPHY FW update. Otherwise, skips the NPHY FW update.
IOM Update: 1.coreboot will navigate through the CSE region, identify CSE's IOM FW version and BIOS IOM version. 2.Compares both versions, if there is a difference, coreboot will trigger an IOM FW update.Otherwise, skip IOM FW update.
Before coreboot triggers update of NPHY/IOM, BIOS sends SET BOOT PARTITION INFO(RO) to CSE and issues GLOBAL RESET commands if CSE boots from RW. coreboot updates CSE's NPHY and IOM sub-partition only if CSE boots from CSE RO Boot partition.
Once CSE boots from RO, BIOS sends HMRFPO command to CSE, then triggers update of NPHY and IOM FW in the CSE Region(RO and RW).
coreboot triggers NPHY/IOM update procedure in all ChromeOS boot modes(Normal and Recovery).
BUG=b:202143532 BRANCH=None TEST=Build and verify CSE sub-partitions IOM and NPHY are getting updated with CBFS IOM and NPHY blobs.
Change-Id: I7c0cda51314c4f722f5432486a43e19b46f4b240 Signed-off-by: Krishna Prasad Bhat krishna.p.bhat.d@intel.com --- M src/soc/intel/alderlake/romstage/romstage.c M src/soc/intel/common/block/cse/Kconfig M src/soc/intel/common/block/cse/Makefile.inc M src/soc/intel/common/block/cse/cse_lite.c M src/soc/intel/common/block/include/intelblocks/cse.h A src/soc/intel/common/block/include/intelblocks/cse_layout.h 6 files changed, 505 insertions(+), 4 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/85/59685/13