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-rw-r--r--src/soc/intel/common/Kconfig4
-rw-r--r--src/soc/intel/common/mrc_cache.c116
-rw-r--r--src/soc/intel/common/mrc_cache.h4
3 files changed, 93 insertions, 31 deletions
diff --git a/src/soc/intel/common/Kconfig b/src/soc/intel/common/Kconfig
index 7ae7e60396..23dd601154 100644
--- a/src/soc/intel/common/Kconfig
+++ b/src/soc/intel/common/Kconfig
@@ -31,6 +31,10 @@ config HAS_RECOVERY_MRC_CACHE
bool
default n
+config MRC_SETTINGS_VARIABLE_DATA
+ bool
+ default n
+
endif # CACHE_MRC_SETTINGS
config DISPLAY_MTRRS
diff --git a/src/soc/intel/common/mrc_cache.c b/src/soc/intel/common/mrc_cache.c
index 7b660438ae..e9d670ec40 100644
--- a/src/soc/intel/common/mrc_cache.c
+++ b/src/soc/intel/common/mrc_cache.c
@@ -35,6 +35,14 @@ struct mrc_data_region {
uint32_t size;
};
+enum result {
+ WRITE_FAILURE = -1,
+ ERASE_FAILURE = -2,
+ OTHER_FAILURE = -3,
+ UPDATE_SUCCESS = 0,
+ ALREADY_UPTODATE = 1
+};
+
/* common code */
static int mrc_cache_get_region(const char *name,
struct mrc_data_region *region)
@@ -235,6 +243,16 @@ int mrc_cache_get_current(const struct mrc_saved_data **cache)
return mrc_cache_get_current_with_version(cache, 0);
}
+int mrc_cache_get_vardata(const struct mrc_saved_data **cache, uint32_t version)
+{
+ struct mrc_data_region region;
+
+ if (mrc_cache_get_region(VARIABLE_MRC_CACHE, &region) < 0)
+ return -1;
+
+ return __mrc_cache_get_current(&region, cache, version);
+}
+
/* Fill in mrc_saved_data structure with payload. */
static void mrc_cache_fill(struct mrc_saved_data *cache, const void *data,
size_t size, uint32_t version)
@@ -247,15 +265,15 @@ static void mrc_cache_fill(struct mrc_saved_data *cache, const void *data,
cache->size);
}
-int mrc_cache_stash_data_with_version(const void *data, size_t size,
- uint32_t version)
+static int _mrc_stash_data(const void *data, size_t size, uint32_t version,
+ uint32_t cbmem_id)
{
int cbmem_size;
struct mrc_saved_data *cache;
cbmem_size = sizeof(*cache) + ALIGN(size, 16);
- cache = cbmem_add(CBMEM_ID_MRCDATA, cbmem_size);
+ cache = cbmem_add(cbmem_id, cbmem_size);
if (cache == NULL) {
printk(BIOS_ERR, "MRC: No space in cbmem for training data.\n");
@@ -273,6 +291,18 @@ int mrc_cache_stash_data_with_version(const void *data, size_t size,
return 0;
}
+int mrc_cache_stash_data_with_version(const void *data, size_t size,
+ uint32_t version)
+{
+ return _mrc_stash_data(data, size, version, CBMEM_ID_MRCDATA);
+}
+
+int mrc_cache_stash_vardata(const void *data, size_t size, uint32_t version)
+{
+ return _mrc_stash_data(data, size, version, CBMEM_ID_VAR_MRCDATA);
+}
+
+
int mrc_cache_stash_data(const void *data, size_t size)
{
return mrc_cache_stash_data_with_version(data, size, 0);
@@ -324,51 +354,57 @@ mrc_cache_next_slot(const struct mrc_data_region *region,
return next_slot;
}
-static void log_event_cache_update(uint8_t slot, uint8_t status)
+static void log_event_cache_update(uint8_t slot, enum result res)
{
const int type = ELOG_TYPE_MEM_CACHE_UPDATE;
struct elog_event_mem_cache_update event = {
- .slot = slot,
- .status = status,
+ .slot = slot
};
+ /* Filter through interesting events only */
+ switch (res) {
+ case WRITE_FAILURE: /* fall-through */
+ case ERASE_FAILURE: /* fall-through */
+ case OTHER_FAILURE: /* fall-through */
+ event.status = ELOG_MEM_CACHE_UPDATE_STATUS_FAIL;
+ break;
+ case UPDATE_SUCCESS:
+ event.status = ELOG_MEM_CACHE_UPDATE_STATUS_SUCCESS;
+ break;
+ default:
+ return;
+ }
+
if (elog_add_event_raw(type, &event, sizeof(event)) < 0)
printk(BIOS_ERR, "Failed to log mem cache update event.\n");
}
-static void update_mrc_region(void)
+static int update_mrc_cache_type(uint32_t cbmem_id, const char *region_name)
{
const struct mrc_saved_data *current_boot;
const struct mrc_saved_data *current_saved;
const struct mrc_saved_data *next_slot;
struct mrc_data_region region;
- const char *region_name = DEFAULT_MRC_CACHE;
- uint8_t slot = ELOG_MEM_CACHE_UPDATE_SLOT_NORMAL;
+ int res;
printk(BIOS_DEBUG, "MRC: Updating cache data.\n");
- if (vboot_recovery_mode_enabled() &&
- IS_ENABLED(CONFIG_HAS_RECOVERY_MRC_CACHE)) {
- region_name = RECOVERY_MRC_CACHE;
- slot = ELOG_MEM_CACHE_UPDATE_SLOT_RECOVERY;
- }
-
printk(BIOS_ERR, "MRC: Cache region selected - %s\n", region_name);
if (mrc_cache_get_region(region_name, &region)) {
printk(BIOS_ERR, "MRC: Could not obtain cache region.\n");
- return;
+ return OTHER_FAILURE;
}
- current_boot = cbmem_find(CBMEM_ID_MRCDATA);
+ current_boot = cbmem_find(cbmem_id);
if (!current_boot) {
printk(BIOS_ERR, "MRC: No cache in cbmem.\n");
- return;
+ return OTHER_FAILURE;
}
if (!mrc_cache_valid(&region, current_boot)) {
printk(BIOS_ERR, "MRC: Cache data in cbmem invalid.\n");
- return;
+ return OTHER_FAILURE;
}
current_saved = NULL;
@@ -379,7 +415,7 @@ static void update_mrc_region(void)
!memcmp(&current_saved->data[0], &current_boot->data[0],
current_saved->size)) {
printk(BIOS_DEBUG, "MRC: Cache up to date.\n");
- return;
+ return ALREADY_UPTODATE;
}
}
@@ -391,21 +427,15 @@ static void update_mrc_region(void)
if (nvm_erase(region.base, region.size) < 0) {
printk(BIOS_DEBUG, "MRC: Failure erasing "
"region %s.\n", region_name);
- return;
+ return ERASE_FAILURE;
}
}
next_slot = region.base;
}
- if (nvm_write((void *)next_slot, current_boot,
- current_boot->size + sizeof(*current_boot))) {
- printk(BIOS_DEBUG, "MRC: Failure writing MRC cache to %s:%p\n",
- region_name, next_slot);
- log_event_cache_update(slot, ELOG_MEM_CACHE_UPDATE_STATUS_FAIL);
- } else {
- log_event_cache_update(slot,
- ELOG_MEM_CACHE_UPDATE_STATUS_SUCCESS);
- }
+ res = nvm_write((void *)next_slot, current_boot, current_boot->size
+ + sizeof(*current_boot));
+ return res < 0 ? WRITE_FAILURE : UPDATE_SUCCESS;
}
static void protect_mrc_region(void)
@@ -429,7 +459,31 @@ static void protect_mrc_region(void)
static void update_mrc_cache(void *unused)
{
- update_mrc_region();
+ uint8_t slot;
+ const char *region_name;
+ enum result res;
+
+ /* First update either recovery or default cache */
+ if (vboot_recovery_mode_enabled() &&
+ IS_ENABLED(CONFIG_HAS_RECOVERY_MRC_CACHE)) {
+ region_name = RECOVERY_MRC_CACHE;
+ slot = ELOG_MEM_CACHE_UPDATE_SLOT_RECOVERY;
+ } else {
+ region_name = DEFAULT_MRC_CACHE;
+ slot = ELOG_MEM_CACHE_UPDATE_SLOT_NORMAL;
+ }
+
+ res = update_mrc_cache_type(CBMEM_ID_MRCDATA, region_name);
+ log_event_cache_update(slot, res);
+
+ /* Next update variable cache if in use */
+ if (IS_ENABLED(CONFIG_MRC_SETTINGS_VARIABLE_DATA)) {
+ res = update_mrc_cache_type(CBMEM_ID_VAR_MRCDATA,
+ VARIABLE_MRC_CACHE);
+ log_event_cache_update(ELOG_MEM_CACHE_UPDATE_SLOT_VARIABLE,
+ res);
+ }
+
protect_mrc_region();
}
diff --git a/src/soc/intel/common/mrc_cache.h b/src/soc/intel/common/mrc_cache.h
index 850acd6c0a..6414accfcf 100644
--- a/src/soc/intel/common/mrc_cache.h
+++ b/src/soc/intel/common/mrc_cache.h
@@ -20,6 +20,7 @@
#include <stdint.h>
#define DEFAULT_MRC_CACHE "RW_MRC_CACHE"
+#define VARIABLE_MRC_CACHE "RW_VAR_MRC_CACHE"
#define RECOVERY_MRC_CACHE "RECOVERY_MRC_CACHE"
#define UNIFIED_MRC_CACHE "UNIFIED_MRC_CACHE"
@@ -36,6 +37,8 @@ struct mrc_saved_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);
+int mrc_cache_get_vardata(const struct mrc_saved_data **cache,
+ uint32_t version);
int mrc_cache_get_current_from_region(const struct mrc_saved_data **cache,
uint32_t version,
const char *region_name);
@@ -44,5 +47,6 @@ int mrc_cache_get_current_from_region(const struct mrc_saved_data **cache,
int mrc_cache_stash_data(const void *data, size_t size);
int mrc_cache_stash_data_with_version(const void *data, size_t size,
uint32_t version);
+int mrc_cache_stash_vardata(const void *data, size_t size, uint32_t version);
#endif /* _COMMON_MRC_CACHE_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 03:28:31 +0000