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mb/google/bluey: Increase MRC cache size

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Increase the size of the Memory Reference Code (MRC) cache to prevent
boot failures.

Previously, the MRC cache was 64K (32K for recovery and 32K for
read/write), which was insufficient for the firmware. This change
expands the UNIFIED_MRC_CACHE to 128K, with RECOVERY_MRC_CACHE and
RW_MRC_CACHE each receiving 64K.

BUG=b:437402936
TEST=Able to build and boot google/quenbi till depthcharge.

w/o this patch:

```
[ERROR]  REGF metadata allocation failed: 3880 data blocks 2048 total blocks
[ERROR]  MRC: failed to update 'RW_MRC_CACHE'.
```

w/ this patch:

```
[DEBUG]  FMAP: area RW_MRC_CACHE found @ c10000 (65536 bytes)
...
[DEBUG]  FMAP: area RW_MRC_CACHE found @ c10000 (65536 bytes)
[DEBUG]  MRC: Checking cached data update for 'RW_MRC_CACHE'.
[DEBUG]  read SPI 0xc10010 0xf27c: 5011 us, 12387 KB/s, 99.096 Mbps
[DEBUG]  MRC: cache data 'RW_MRC_CACHE' needs update.
[INFO ]  REGF update can't fit. Will empty.
[DEBUG]  SF: Successfully erased 65536 bytes @ 0xc10000
[DEBUG]  MRC: updated 'RW_MRC_CACHE'.

```

Change-Id: Ie456f9ab870eab06c2d23cb5d2734faf644a2176
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88727
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
This commit is contained in:
Subrata Banik 2025-08-09 02:15:35 +05:30
commit 795157a606
1 changed files with 4 additions and 4 deletions
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8
src/mainboard/google/bluey/chromeos.fmd
View file

@ -13,10 +13,10 @@ FLASH@0x0 CONFIG_ROM_SIZE {
RO_VPD(PRESERVE) 16K
}
RW_MISC 120K {
UNIFIED_MRC_CACHE(PRESERVE) 64K {
RECOVERY_MRC_CACHE 32K
RW_MRC_CACHE 32K
RW_MISC 184K {
UNIFIED_MRC_CACHE(PRESERVE) 128K {
RECOVERY_MRC_CACHE 64K
RW_MRC_CACHE 64K
}
RW_ELOG(PRESERVE) 4K
RW_SHARED 4K {