diff --git a/src/include/boot/coreboot_tables.h b/src/include/boot/coreboot_tables.h
index 35ebd6eb3c..c8d52517f9 100644
--- a/src/include/boot/coreboot_tables.h
+++ b/src/include/boot/coreboot_tables.h
@@ -229,6 +229,7 @@ struct lb_gpios {
 #define LB_TAB_VBOOT_HANDOFF	0x0020
 #define LB_TAB_DMA		0x0022
 #define LB_TAG_RAM_OOPS		0x0023
+#define LB_TAG_MTC		0x002b
 struct lb_range {
 	uint32_t tag;
 	uint32_t size;
diff --git a/src/include/cbmem_id.h b/src/include/cbmem_id.h
index b9c5ff2d9b..1b0377075e 100644
--- a/src/include/cbmem_id.h
+++ b/src/include/cbmem_id.h
@@ -43,6 +43,7 @@
 #define CBMEM_ID_MEMINFO	0x494D454D
 #define CBMEM_ID_MPTABLE	0x534d5054
 #define CBMEM_ID_MRCDATA	0x4d524344
+#define CBMEM_ID_MTC		0xcb31d31c
 #define CBMEM_ID_NONE		0x00000000
 #define CBMEM_ID_PIRQ		0x49525154
 #define CBMEM_ID_POWER_STATE	0x50535454
@@ -88,6 +89,7 @@
 	{ CBMEM_ID_MEMINFO,		"MEM INFO   " }, \
 	{ CBMEM_ID_MPTABLE,		"SMP TABLE  " }, \
 	{ CBMEM_ID_MRCDATA,		"MRC DATA   " }, \
+	{ CBMEM_ID_MTC,			"MTC        " }, \
 	{ CBMEM_ID_PIRQ,		"IRQ TABLE  " }, \
 	{ CBMEM_ID_POWER_STATE,		"POWER STATE" }, \
 	{ CBMEM_ID_RAM_OOPS,		"RAMOOPS    " }, \