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soc/intel/common/mrc_cache: Don't assume FMAP is tied to CHROMEOS 

The old code only checked for an RW_MRC_CACHE region when
CONFIG_CHROMEOS was selected. This assumption is not necessarily true,
as one can have FMAP without a CHROMEOS build. As a result, always
search FMAP first before falling back on CBFS for locating the MRC
cache region.
The old logic where CHROMEOS builds would fail when RW_MRC_CACHE was
not found is preserved, such that behavior does not change.

Change-Id: I3596ef3235eff661af055968ea641f3e9671cdcd
Signed-off-by: Alexandru Gagniuc <alexandrux.gagniuc@intel.com>
Reviewed-on: https://review.coreboot.org/14757
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Alexandru Gagniuc 2016-04-12 14:52:29 -07:00 committed by Aaron Durbin
parent 010225c777
commit 810caa9949
1 changed files with 10 additions and 6 deletions
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10
src/soc/intel/common/mrc_cache.c
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@ -35,23 +35,27 @@ struct mrc_data_region {
/* common code */
static int mrc_cache_get_region(struct mrc_data_region *region)
{
if (IS_ENABLED(CONFIG_CHROMEOS)) {
bool located_by_fmap = true;
struct region_device rdev;
if (fmap_locate_area_as_rdev("RW_MRC_CACHE", &rdev))
located_by_fmap = false;
/* CHROMEOS builds must get their MRC cache from FMAP. */
if (IS_ENABLED(CONFIG_CHROMEOS) && !located_by_fmap)
return -1;
if (located_by_fmap) {
region->size = region_device_sz(&rdev);
region->base = rdev_mmap_full(&rdev);
if (region->base == NULL)
return -1;
return 0;
} else {
region->base = (void *)CONFIG_MRC_SETTINGS_CACHE_BASE;
region->size = CONFIG_MRC_SETTINGS_CACHE_SIZE;
}
return 0;
}