diff --git a/src/arch/x86/cpu.c b/src/arch/x86/cpu.c
index 5afae8b486..cba105a5db 100644
--- a/src/arch/x86/cpu.c
+++ b/src/arch/x86/cpu.c
@@ -19,6 +19,7 @@
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/lapic.h>
+#include <cpu/x86/tsc.h>
 #include <arch/cpu.h>
 #include <device/path.h>
 #include <device/device.h>
@@ -291,4 +292,21 @@ void cpu_initialize(unsigned int index)
 
 void lb_arch_add_records(struct lb_header *header)
 {
+	uint32_t freq_khz;
+	struct lb_tsc_info *tsc_info;
+
+	/* Don't advertise a TSC rate unless it's constant. */
+	if (!IS_ENABLED(CONFIG_TSC_CONSTANT_RATE))
+		return;
+
+	freq_khz = tsc_freq_mhz() * 1000;
+
+	/* No use exposing a TSC frequency that is zero. */
+	if (freq_khz == 0)
+		return;
+
+	tsc_info = (void *)lb_new_record(header);
+	tsc_info->tag = LB_TAG_TSC_INFO;
+	tsc_info->size = sizeof(*tsc_info);
+	tsc_info->freq_khz = freq_khz;
 }
diff --git a/src/commonlib/include/commonlib/coreboot_tables.h b/src/commonlib/include/commonlib/coreboot_tables.h
index 43adb09375..5c28791594 100644
--- a/src/commonlib/include/commonlib/coreboot_tables.h
+++ b/src/commonlib/include/commonlib/coreboot_tables.h
@@ -335,6 +335,14 @@ struct lb_cbmem_entry {
 	uint32_t id;
 };
 
+#define LB_TAG_TSC_INFO 0x0032
+struct lb_tsc_info {
+	uint32_t tag;
+	uint32_t size;
+
+	uint32_t freq_khz;
+};
+
 #define LB_TAG_SERIALNO		0x002a
 #define MAX_SERIALNO_LENGTH	32