diff --git a/plat/xilinx/zynqmp/zynqmp_def.h b/plat/xilinx/zynqmp/zynqmp_def.h
index e90ad02..45fa387 100644
--- a/plat/xilinx/zynqmp/zynqmp_def.h
+++ b/plat/xilinx/zynqmp/zynqmp_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -174,4 +174,6 @@
 #define ACTLR_EL3_L2ACTLR_BIT	(1 << 6)
 #define ACTLR_EL3_CPUACTLR_BIT	(1 << 0)
 
+#define IOU_SLCR_BASEADDR		0xFF180000
+
 #endif /* __ZYNQMP_DEF_H__ */