tree 9b54eb872d98fff7beea7006a823020b51f2efe0
parent c484c1a9f6929f2720ec300b134ffb1c817d8683
author Subrata Banik <subratabanik@google.com> 1680790868 +0530
committer Subrata Banik <subratabanik@google.com> 1681213134 +0000

mb/google/rex: Update Debug Flash Layout to fit WP_RO within 4MB

This patch updates the Rex debug flash layout to optimize WP_RO to 4MB.

Changes for chromeos.fmd:

SI_BIOS:
     RW_SECTION_A/B: Increase to 7.5MB.
     RW_LEGACY: Introduce with 1MB.
     RW_MISC: Increased to 1MB.
     RW_UNUSED: 2MB (reserved)
     WP_RO: Reduce to 4MB

Additionally, ensure RW_SECTION_B region starts at 16MB boundary in the
SPI Flash.

BUG=b:277143384
TEST=Able to build and boot google/rex with FSP release and debug image.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I4ab69eb24937d58c8bc5d3c0a6e5cb70b843a1ae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74253
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>