diff options
| author | Subrata Banik <subratabanik@google.com> | 2023-04-06 15:12:22 +0530 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-04-11 11:38:23 +0000 |
| commit | 9629f94c4e7acd50a198cdec90418e3a2405127c (patch) | |
| tree | 0752cdd8e436bc35956d07032256371480158fc2 /src | |
| parent | cda48b297c75ca79a956bb2033c5ed28e426543c (diff) | |
mb/google/rex: Update Flash Layout to fit WP_RO within 4MB
This patch updates the Rex flash layout to optimize WP_RO to 4MB.
The idea is to create more space inside FW_RW_A/B to accommodate
multiple blobs to boot google/rex with different Intel MTL SoC stepping.
Changes for chromeos.fmd:
SI_BIOS:
RW_SECTION_A/B: Reduce to 7MB.
RW_LEGACY: Reduce to 1MB.
RW_MISC: Increased to 1MB.
RW_UNUSED: 3MB (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.
Change-Id: Iccf83b7bb66d0d5503e0ff9e9a819051296c6724
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74229
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/rex/chromeos.fmd | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/src/mainboard/google/rex/chromeos.fmd b/src/mainboard/google/rex/chromeos.fmd index 3521232ece..b2c0e84b6b 100644 --- a/src/mainboard/google/rex/chromeos.fmd +++ b/src/mainboard/google/rex/chromeos.fmd @@ -4,38 +4,45 @@ FLASH 32M { SI_ME } SI_BIOS 23M { - RW_SECTION_A 7092K { + RW_SECTION_A 7M { VBLOCK_A 8K FW_MAIN_A(CBFS) RW_FWID_A 64 ME_RW_A(CBFS) 4400K } - RW_MISC 152K { - RW_ELOG(PRESERVE) 4K - RW_SHARED 4K { - SHARED_DATA 4K - } - RW_VPD(PRESERVE) 8K - RW_NVRAM(PRESERVE) 8K - UNIFIED_MRC_CACHE(PRESERVE) 128K { - RECOVERY_MRC_CACHE 64K - RW_MRC_CACHE 64K - } - } # This section starts at the 16M boundary in SPI flash. # MTL does not support a region crossing this boundary, # because the SPI flash is memory-mapped into two non- # contiguous windows. - RW_SECTION_B 7092K { + RW_SECTION_B 7M { VBLOCK_B 8K FW_MAIN_B(CBFS) RW_FWID_B 64 ME_RW_B(CBFS) 4400K } + RW_MISC 1M { + UNIFIED_MRC_CACHE(PRESERVE) 128K { + RECOVERY_MRC_CACHE 64K + RW_MRC_CACHE 64K + } + RW_ELOG(PRESERVE) 16K + RW_SHARED 16K { + SHARED_DATA 8K + VBLOCK_DEV 8K + } + # The RW_SPD_CACHE region is only used for rex variants that use DDRx memory. + # It is placed in the common `chromeos.fmd` file because it is only 4K and there + # is free space in the RW_MISC region that cannot be easily reclaimed because + # the RW_SECTION_B must start on the 16M boundary. + RW_SPD_CACHE(PRESERVE) 4K + RW_VPD(PRESERVE) 8K + RW_NVRAM(PRESERVE) 24K + } RW_LEGACY(CBFS) 1M + RW_UNUSED 3M # Make WP_RO region align with SPI vendor # memory protected range specification. - WP_RO 8M { + WP_RO 4M { RO_VPD(PRESERVE) 16K RO_GSCVD 8K RO_SECTION { |