[M] Change in flashrom[main]: ichspi.c: Add support for region 9 and beyond in Meteor Lake

[Hsuan-ting Chen (Code Review)]

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Hello Hsuan Ting Chen, Subrata Banik, build bot (Jenkins),

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

https://review.coreboot.org/c/flashrom/+/81357?usp=email

to look at the new patch set (#2).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: ichspi.c: Add support for region 9 and beyond in Meteor Lake
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ichspi.c: Add support for region 9 and beyond in Meteor Lake

Since Meteor Lake, configuring region access for FREG9 and higher is
necessary. This configuration is determined using BIOS_BM registers:

BIOS_BM_RAP (Offset 0x118): BIOS Master Read Access Permissions.
Each bit [15:0] corresponds to a region [15:0].
A set bit grants BIOS master read access.

BIOS_BM_WAP (Offset 0x11c): BIOS Master Write Access Permissions.
Each bit [15:0] corresponds to a region [15:0].
A set bit grants BIOS master write/erase access.

BUG=b:319773700, b:304439294
BUG=b:319336080
TEST=On MTL, use flashrom -VV to see correct FREG9 access
TEST=On ADL, use flashrom -VV to see not break anything

Change-Id: I1e06e7b3d470423a6014e623826d9234fdebfbf9
Signed-off-by: [e-mail] 
---
M ichspi.c
1 file changed, 67 insertions(+), 14 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/57/81357/2