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| author | Furquan Shaikh <furquan@google.com> | 2016-07-24 08:48:34 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2016-07-27 23:53:13 +0200 |
| commit | af8ef2a810f97b762d30de2b6f30d6ffefa0ae0e (patch) | |
| tree | 7ba9d235d73d376d902684bb23bb3c2714f953b8 /src/drivers | |
| parent | c31973760f7dd3db2b149cb512b0a9dbb9ef45cc (diff) | |
| download | coreboot-af8ef2a810f97b762d30de2b6f30d6ffefa0ae0e.tar.xz | |
drivers/intel/fsp2_0: Update MRC cache with dead version in recovery
If the system is in recovery, store the newly generated MRC data using a
dummy version which is not legit. This ensures that on next normal boot,
new MRC data will be generated and stored.
BUG=chrome-os-partner:55699
Change-Id: Ib13e8c978dc1b4fc8817fab16d0e606f210f2586
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15828
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/fsp2_0/memory_init.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp2_0/memory_init.c b/src/drivers/intel/fsp2_0/memory_init.c index 8afa6d701c..004d7a8ffd 100644 --- a/src/drivers/intel/fsp2_0/memory_init.c +++ b/src/drivers/intel/fsp2_0/memory_init.c @@ -57,6 +57,13 @@ static void save_memory_training_data(bool s3wake, uint32_t fsp_version) printk(BIOS_ERR, "Failed to stash MRC data\n"); } +/* + * On every trip to recovery, newly generated MRC data is stored with this + * version since it is not expected to be a legit version. This ensures that on + * next normal boot, memory re-training occurs and new MRC data is stored. + */ +#define MRC_DEAD_VERSION (0xdeaddead) + static enum fsp_status do_fsp_post_memory_init(void *hob_list_ptr, bool s3wake, uint32_t fsp_version) { @@ -86,6 +93,9 @@ static enum fsp_status do_fsp_post_memory_init(void *hob_list_ptr, bool s3wake, /* Now that CBMEM is up, save the list so ramstage can use it */ fsp_save_hob_list(hob_list_ptr); + if (recovery_mode_enabled()) + fsp_version = MRC_DEAD_VERSION; + save_memory_training_data(s3wake, fsp_version); /* Create romstage handof information */ |