diff --git a/src/northbridge/intel/nehalem/northbridge.c b/src/northbridge/intel/nehalem/northbridge.c
index 6fc61c3..8f55e3c 100644
--- a/src/northbridge/intel/nehalem/northbridge.c
+++ b/src/northbridge/intel/nehalem/northbridge.c
@@ -180,6 +180,11 @@
 	return pci_read_config32(dev, TSEG) & ~1;
 }
 
+u32 northbridge_get_tseg_size(void)
+{
+	return CONFIG_SMM_TSEG_SIZE;
+}
+
 static void mc_set_resources(struct device *dev)
 {
 	/* And call the normal set_resources */