diff options
| author | Julius Werner <jwerner@chromium.org> | 2019-12-11 17:09:39 -0800 |
|---|---|---|
| committer | Philipp Deppenwiese <zaolin.daisuki@gmail.com> | 2020-11-21 10:43:53 +0000 |
| commit | 1e37c9ca465a14d55adeacb332354771543437b5 (patch) | |
| tree | 6b38606a32261cb99a4518b925278e97c8f120a6 /src/commonlib/include | |
| parent | 7d11513ab3281ef3bee83b4b523219b683d3ddc1 (diff) | |
cbfs: Add metadata cache
This patch adds a new CBFS "mcache" (metadata cache) -- a memory buffer
that stores the headers of all CBFS files. Similar to the existing FMAP
cache, this cache should reduce the amount of SPI accesses we need to do
every boot: rather than having to re-read all CBFS headers from SPI
flash every time we're looking for a file, we can just walk the same
list in this in-memory copy and finally use it to directly access the
flash at the right position for the file data.
This patch adds the code to support the cache but doesn't enable it on
any platform. The next one will turn it on by default.
Change-Id: I5b1084bfdad1c6ab0ee1b143ed8dd796827f4c65
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38423
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/commonlib/include')
| -rw-r--r-- | src/commonlib/include/commonlib/cbmem_id.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/commonlib/include/commonlib/cbmem_id.h b/src/commonlib/include/commonlib/cbmem_id.h index 6b4d60469e..ab7cf63843 100644 --- a/src/commonlib/include/commonlib/cbmem_id.h +++ b/src/commonlib/include/commonlib/cbmem_id.h @@ -67,6 +67,8 @@ #define CBMEM_ID_ROM2 0x524f4d32 #define CBMEM_ID_ROM3 0x524f4d33 #define CBMEM_ID_FMAP 0x464d4150 +#define CBMEM_ID_CBFS_RO_MCACHE 0x524d5346 +#define CBMEM_ID_CBFS_RW_MCACHE 0x574d5346 #define CBMEM_ID_FSP_LOGO 0x4c4f474f #define CBMEM_ID_SMM_COMBUFFER 0x53534d32 @@ -129,5 +131,7 @@ { CBMEM_ID_ROM1, "VGA ROM #1 "}, \ { CBMEM_ID_ROM2, "VGA ROM #2 "}, \ { CBMEM_ID_ROM3, "VGA ROM #3 "}, \ - { CBMEM_ID_FMAP, "FMAP "}, + { CBMEM_ID_FMAP, "FMAP "}, \ + { CBMEM_ID_CBFS_RO_MCACHE, "RO MCACHE "}, \ + { CBMEM_ID_CBFS_RW_MCACHE, "RW MCACHE "} #endif /* _CBMEM_ID_H_ */ |