diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2015-12-09 15:04:49 -0600 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2015-12-11 00:20:02 +0100 |
| commit | bc6e7c0905d6490ba54aee264b8dcaa09ed50ea3 (patch) | |
| tree | 415e1d21f91bc01ed36333a6cf2db8edd901a854 /src/soc/intel/common/mrc_cache.h | |
| parent | a606598150320f87d1780b6443ccb960fa4bd21e (diff) | |
mrc_cache: add version field
In order to allow for updateable memory init code on intel x86
platforms one needs to ensure the saved mrc data matches the code
consuming the data. To that end add a version field to the saved
data structure.
BUG=chrome-os-partner:46050
BRANCH=None
TEST=Built and booted on glados. Suspended and resumed. Also verified
version mismatch path.
Change-Id: Ie86db1750af5d9bff6446999b0d04b60612f8d29
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12700
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc/intel/common/mrc_cache.h')
| -rw-r--r-- | src/soc/intel/common/mrc_cache.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/soc/intel/common/mrc_cache.h b/src/soc/intel/common/mrc_cache.h index 9af3ef10c5..25d9316aec 100644 --- a/src/soc/intel/common/mrc_cache.h +++ b/src/soc/intel/common/mrc_cache.h @@ -24,14 +24,18 @@ struct mrc_saved_data { uint32_t signature; uint32_t size; uint32_t checksum; - uint32_t reserved; + uint32_t version; uint8_t data[0]; } __attribute__((packed)); /* Locate the most recently saved MRC data. */ int mrc_cache_get_current(const struct mrc_saved_data **cache); +int mrc_cache_get_current_with_version(const struct mrc_saved_data **cache, + uint32_t version); /* Stash the resulting MRC data to be saved in non-volatile storage later. */ int mrc_cache_stash_data(void *data, size_t size); +int mrc_cache_stash_data_with_version(void *data, size_t size, + uint32_t version); #endif /* _COMMON_MRC_CACHE_H_ */ |