[S] Change in coreboot[master]: elog: Add PSR backup eventlog messages

[Krishna P Bhat D (Code Review)]

Krishna P Bhat D has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/75760?usp=email )

Change subject: elog: Add PSR backup eventlog messages
......................................................................

elog: Add PSR backup eventlog messages

Change-Id: I2459a2b941d28a87b6c78f75dbe8779d73328d7a
Signed-off-by: Krishna Prasad Bhat 
---
M src/commonlib/bsd/include/commonlib/bsd/elog.h
M src/soc/intel/common/block/cse/cse_lite.c
2 files changed, 18 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/60/75760/1

diff --git a/src/commonlib/bsd/include/commonlib/bsd/elog.h b/src/commonlib/bsd/include/commonlib/bsd/elog.h
index 783557f..9ab5232 100644
--- a/src/commonlib/bsd/include/commonlib/bsd/elog.h
+++ b/src/commonlib/bsd/include/commonlib/bsd/elog.h
@@ -372,6 +372,13 @@
 /* Only the 7-LSB are used for size */
 #define ELOG_MAX_EVENT_SIZE                    0x7F

+/* PSR Events */
+#define ELOG_TYPE_PSR_DATA_BACKUP	0xb9
+#define ELOG_PSR_DATA_BACKUP_SUCCESS	0
+#define ELOG_PSR_DATA_BACKUP_FAILED	1
+
+#define ELOG_PSR_DATA_LOST	0xba
+
 enum cb_err elog_verify_header(const struct elog_header *header);
 const struct event_header *elog_get_next_event(const struct event_header *event);
 const void *event_get_data(const struct event_header *event);
diff --git a/src/soc/intel/common/block/cse/cse_lite.c b/src/soc/intel/common/block/cse/cse_lite.c
index eff5bb7..1088acf 100644
--- a/src/soc/intel/common/block/cse/cse_lite.c
+++ b/src/soc/intel/common/block/cse/cse_lite.c
@@ -6,6 +6,7 @@
 #include <commonlib/region.h>
 #include <console/console.h>
 #include <cpu/cpu.h>
+#include <elog.h>
 #include <fmap.h>
 #include <intelbasecode/debug_feature.h>
 #include <intelblocks/cse.h>
@@ -786,11 +787,18 @@
    if (heci_send_receive(&req, sizeof(req),
    	&backup_psr_resp, &resp_size, HECI_PSR_ADDR)) {
    	printk(BIOS_ERR, "cse_lite: could not backup PSR data\n");
+		elog_add_event_byte(ELOG_TYPE_PSR_DATA_BACKUP, ELOG_PSR_DATA_BACKUP_FAILED);
    } else {
    	printk(BIOS_DEBUG, "cse_lite: PSR_HECI_FW_DOWNGRADE_BACKUP command sent\n");
-		if (backup_psr_resp.status != PSR_STATUS_SUCCESS)
+		if (backup_psr_resp.status != PSR_STATUS_SUCCESS) {
    		printk(BIOS_DEBUG, "cse_lite: PSR_HECI_FW_DOWNGRADE_BACKUP command"
    		       "returned %d\n", (int)backup_psr_resp.status);
+			elog_add_event_byte(ELOG_TYPE_PSR_DATA_BACKUP,
+						ELOG_PSR_DATA_BACKUP_FAILED);
+		} else {
+			elog_add_event_byte(ELOG_TYPE_PSR_DATA_BACKUP,
+						ELOG_PSR_DATA_BACKUP_SUCCESS);
+		}
    }

/* We have sent PSR backup command. Update this info in CMOS */
@@ -806,6 +814,8 @@
    if (status == CSE_UPDATE_DOWNGRADE)
    	backup_psr_data(cse_bp_info);

+	if (status == CSE_UPDATE_CORRUPTED)
+		elog_add_event(ELOG_PSR_DATA_LOST);
    /*
     * To set CSE's operation mode to HMRFPO mode:
     * 1. Ensure CSE to boot from RO(BP1)