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| author | Subrata Banik <subratabanik@google.com> | 2023-06-19 12:07:29 +0000 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-06-23 04:49:45 +0000 |
| commit | f31ab7a4976760b63e1ca01fa9490893a0a712bc (patch) | |
| tree | 27e24f718e18af2633b94b334c3b9b67eb32d2ca /src/commonlib | |
| parent | 79274e01a3722a559f46c3ae284e7057b54cbecb (diff) | |
| download | coreboot-f31ab7a4976760b63e1ca01fa9490893a0a712bc.tar.gz coreboot-f31ab7a4976760b63e1ca01fa9490893a0a712bc.tar.bz2 coreboot-f31ab7a4976760b63e1ca01fa9490893a0a712bc.zip | |
{commonlib/drivers}: Have option to store MRC version inside CBMEM
This patch introduces CBMEM ID to store the MRC version (similar to
existing implementation that stores the FSP-M version inside CBMEM ID)
inside cbmem so the version information is available across the
different coreboot stages. For example:
* romstage: Use the CBMEM ID version information to check if the MRC
cache is valid and need to erase the MRC cache
* ramstage: Use the CBMEM ID to store the MRC cache into the
non-volatile space.
BUG=b:261689642
TEST=Able to build and boot google/rex and dump the MRC version as
below.
cbmem --list
CBMEM table of contents:
NAME ID START LENGTH
...
21. MRC VERSION 5f43524d 75ffeb60 00000004
...
localhost ~ # cbmem -r 5f43524d | hexdump
00000000 01 12 07 00
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I91f735239b33c6f8ba41c076048903e4b213c6a2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75921
Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/commonlib')
| -rw-r--r-- | src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h b/src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h index 5080812da46a..8e6e6cdc2f06 100644 --- a/src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h +++ b/src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h @@ -27,6 +27,7 @@ #define CBMEM_ID_FSP_RESERVED_MEMORY 0x46535052 #define CBMEM_ID_FSP_RUNTIME 0x52505346 #define CBMEM_ID_FSPM_VERSION 0x56505346 +#define CBMEM_ID_MRC_VERSION 0x5f43524d #define CBMEM_ID_GDT 0x4c474454 #define CBMEM_ID_HOB_POINTER 0x484f4221 #define CBMEM_ID_IGD_OPREGION 0x4f444749 @@ -112,6 +113,7 @@ { CBMEM_ID_FSP_RESERVED_MEMORY, "FSP MEMORY " }, \ { CBMEM_ID_FSP_RUNTIME, "FSP RUNTIME" }, \ { CBMEM_ID_FSPM_VERSION, "FSPM VERSION" }, \ + { CBMEM_ID_MRC_VERSION, "MRC VERSION" }, \ { CBMEM_ID_GDT, "GDT " }, \ { CBMEM_ID_HOB_POINTER, "HOB " }, \ { CBMEM_ID_IGD_OPREGION, "IGD OPREGION" }, \ |