diff --git a/src/northbridge/intel/gm45/ram_calc.c b/src/northbridge/intel/gm45/ram_calc.c
index 9a65e19..92f1a7f 100644
--- a/src/northbridge/intel/gm45/ram_calc.c
+++ b/src/northbridge/intel/gm45/ram_calc.c
@@ -21,6 +21,7 @@
 #include <arch/io.h>
 #include <device/pci_def.h>
 #include <console/console.h>
+#include <cpu/intel/romstage.h>
 #include <cbmem.h>
 #include "gm45.h"
 
@@ -105,3 +106,8 @@
 {
 	return (void *) smm_region_start();
 }
+
+void *setup_stack_and_mtrrs(void)
+{
+	return (void*)CONFIG_RAMTOP;
+}