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drivers/intel/fsp2_0: Update MRC cache with dead version in recovery

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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>
This commit is contained in:
Furquan Shaikh 2016-07-24 08:48:34 -07:00
parent c31973760f
commit af8ef2a810
1 changed files with 10 additions and 0 deletions
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10
src/drivers/intel/fsp2_0/memory_init.c
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@ -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 */