diff --git a/src/commonlib/include/commonlib/timestamp_serialized.h b/src/commonlib/include/commonlib/timestamp_serialized.h
index de3e1bb624..3d518b77b2 100644
--- a/src/commonlib/include/commonlib/timestamp_serialized.h
+++ b/src/commonlib/include/commonlib/timestamp_serialized.h
@@ -119,7 +119,8 @@ enum timestamp_id {
 	TS_ME_ICC_CONFIG_START = 945,
 	TS_ME_HOST_BOOT_PREP_DONE = 946,
 	TS_ME_RECEIVED_CRDA_FROM_PMC = 947,
-	TS_FIT_UCODE_LOADED = 948,
+	TS_START_CSE_FW_SYNC = 948,
+	TS_END_CSE_FW_SYNC = 949,
 
 	/* 950+ reserved for vendorcode extensions (950-999: intel/fsp) */
 	TS_FSP_MEMORY_INIT_START = 950,
@@ -280,7 +281,8 @@ static const struct timestamp_id_to_name {
 	{ TS_ME_ICC_CONFIG_START,	"CSE started to handle ICC configuration"},
 	{ TS_ME_HOST_BOOT_PREP_DONE,	"CSE sent 'Host BIOS Prep Done' to PMC"},
 	{ TS_ME_RECEIVED_CRDA_FROM_PMC,	"CSE received 'CPU Reset Done Ack sent' from PMC"},
-	{ TS_FIT_UCODE_LOADED,		"CPU has loaded UCODE/PCODE from FIT"},
+	{ TS_START_CSE_FW_SYNC,		"starting CSE firmware sync"},
+	{ TS_END_CSE_FW_SYNC,		"finished CSE firmware sync"},
 
 	/* FSP related timestamps */
 	{ TS_FSP_MEMORY_INIT_START, "calling FspMemoryInit" },