[M] Change in coreboot[main]: soc/intel/cmn/blk: Refactor CSE status flag and optimize forced sync

[Dinesh Gehlot (Code Review)]

Attention is currently required from: Dinesh Gehlot, Intel coreboot Reviewers, Kapil Porwal.

Hello Intel coreboot Reviewers, Kapil Porwal, Subrata Banik, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/86153?usp=email

to look at the new patch set (#15).

Change subject: soc/intel/cmn/blk: Refactor CSE status flag and optimize forced sync
......................................................................

soc/intel/cmn/blk: Refactor CSE status flag and optimize forced sync

This patch enhances the forced CSE sync mechanism by eliminating the
boot partition check for RO. It uses the persistent CMOS flags to
preserve the forced CSE update status across boots.

This patch also replaces the CSE status boolean variable with a bit
field to optimize CMOS memory utilization. Consequently, the remaining
bits can potentially be utilized for additional CSE states in future.

BUG=b:380220737
TEST=Verified forced CSE sync on google/rex0.

Change-Id: If1e4180cb5fec3990fdee2b0e412173b1c8c6ded
Signed-off-by: Dinesh Gehlot 
---
M src/soc/intel/common/block/cse/cse_lite.c
M src/soc/intel/common/block/include/intelblocks/cse.h
2 files changed, 71 insertions(+), 10 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/53/86153/15