diff --git a/include/plat/arm/css/common/css_def.h b/include/plat/arm/css/common/css_def.h
index 99491f8..3fa4c15 100644
--- a/include/plat/arm/css/common/css_def.h
+++ b/include/plat/arm/css/common/css_def.h
@@ -50,6 +50,10 @@
 #define NSRAM_BASE			0x2e000000
 #define NSRAM_SIZE			0x00008000
 
+/* System Security Control Registers */
+#define SSC_REG_BASE			0x2a420000
+#define SSC_GPRETN			(SSC_REG_BASE + 0x030)
+
 /* The slave_bootsecure controls access to GPU, DMC and CS. */
 #define CSS_NIC400_SLAVE_BOOTSECURE	8
 
@@ -112,6 +116,8 @@
  */
 #define BL30_BASE			BL31_BASE
 
+#define SCP_BL2U_BASE			BL31_BASE
+
 #define PLAT_ARM_SHARED_RAM_CACHED	MHU_PAYLOAD_CACHED
 
 /* Load address of Non-Secure Image for CSS platform ports */