diff --git a/src/soc/intel/baytrail/baytrail/efi_wrapper.h b/src/soc/intel/baytrail/baytrail/efi_wrapper.h
index 6682f95cfc..3304d03451 100644
--- a/src/soc/intel/baytrail/baytrail/efi_wrapper.h
+++ b/src/soc/intel/baytrail/baytrail/efi_wrapper.h
@@ -29,7 +29,7 @@
 #ifndef __EFI_WRAPPER_H__
 #define __EFI_WRAPPER_H__
 
-#define EFI_WRAPPER_VER 1
+#define EFI_WRAPPER_VER 2
 
 /* Provide generic x86 calling conventions. */
 #define ABI_X86 __attribute((regparm(0)))
@@ -44,6 +44,8 @@ struct efi_wrapper_params {
 	int version;
 
 	void ABI_X86 (*console_out)(unsigned char byte);
+
+	unsigned int tsc_ticks_per_microsecond;
 } __attribute__((packed));
 
 typedef int ABI_X86 (*efi_wrapper_entry_t)(struct efi_wrapper_params *);
diff --git a/src/soc/intel/baytrail/refcode.c b/src/soc/intel/baytrail/refcode.c
index 1d88ef7eb9..9b5aa6790e 100644
--- a/src/soc/intel/baytrail/refcode.c
+++ b/src/soc/intel/baytrail/refcode.c
@@ -19,6 +19,7 @@
 
 #include <cbmem.h>
 #include <console/console.h>
+#include <cpu/x86/tsc.h>
 #include <rmodule.h>
 
 #include <baytrail/ramstage.h>
@@ -47,6 +48,7 @@ void baytrail_run_reference_code(void)
 		return;
 	}
 
+	wrp.tsc_ticks_per_microsecond = tsc_freq_mhz();
 	entry = refcode.entry;
 
 	/* Call into reference code. */