diff options
| -rw-r--r-- | src/drivers/smmstore/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/drivers/smmstore/store.c | 24 | ||||
| -rw-r--r-- | src/include/smmstore.h | 2 |
3 files changed, 27 insertions, 1 deletions
diff --git a/src/drivers/smmstore/Makefile.inc b/src/drivers/smmstore/Makefile.inc index 6d9a9d6a2f..03f85c5130 100644 --- a/src/drivers/smmstore/Makefile.inc +++ b/src/drivers/smmstore/Makefile.inc @@ -1,4 +1,4 @@ -ramstage-$(CONFIG_SMMSTORE) += store.c +all-$(CONFIG_SMMSTORE) += store.c ifeq ($(CONFIG_SMMSTORE),y) $(call src-to-obj,ramstage,$(dir)/store.c) : $(obj)/fmap_config.h diff --git a/src/drivers/smmstore/store.c b/src/drivers/smmstore/store.c index 96cb761e40..e0f0f57097 100644 --- a/src/drivers/smmstore/store.c +++ b/src/drivers/smmstore/store.c @@ -88,6 +88,30 @@ static int lookup_store(struct region_device *rstore) return rdev_chain(rstore, rdev, 0, region_device_sz(rdev)); } + /* this function is non reentrant */ +int smmstore_lookup_region(struct region_device *rstore) +{ + static int done; + static int ret; + static struct region_device rdev; + + if (!done) { + + done = 1; + + if (fmap_locate_area_as_rdev_rw(SMMSTORE_REGION, &rdev)) { + printk(BIOS_WARNING, + "smm store: Unable to find SMM store FMAP region '%s'\n", + SMMSTORE_REGION); + ret = -1; + } else { + ret = 0; + } + } + + *rstore = rdev; + return ret; +} /* * Read entire store into user provided buffer * diff --git a/src/include/smmstore.h b/src/include/smmstore.h index dfd9336c4d..d3940abc3f 100644 --- a/src/include/smmstore.h +++ b/src/include/smmstore.h @@ -115,6 +115,8 @@ int smmstore_rawclear_region(uint32_t block_id); #if ENV_RAMSTAGE int smmstore_get_info(struct smmstore_params_info *info); #endif +struct region_device; +int smmstore_lookup_region(struct region_device *rstore); /* Advertise SMMSTORE v2 support */ struct lb_header; |