diff --git a/plat/layerscape/common/include/fsl_csu.h b/plat/layerscape/common/include/fsl_csu.h
new file mode 100644
index 0000000..680911e
--- /dev/null
+++ b/plat/layerscape/common/include/fsl_csu.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __FSL_CSU_H__
+#define __FSL_CSU_H__
+
+enum csu_cslx_access {
+	CSU_NS_SUP_R = 0x08,
+	CSU_NS_SUP_W = 0x80,
+	CSU_NS_SUP_RW = 0x88,
+	CSU_NS_USER_R = 0x04,
+	CSU_NS_USER_W = 0x40,
+	CSU_NS_USER_RW = 0x44,
+	CSU_S_SUP_R = 0x02,
+	CSU_S_SUP_W = 0x20,
+	CSU_S_SUP_RW = 0x22,
+	CSU_S_USER_R = 0x01,
+	CSU_S_USER_W = 0x10,
+	CSU_S_USER_RW = 0x11,
+	CSU_ALL_RW = 0xff,
+};
+
+struct csu_ns_dev {
+	uintptr_t ind;
+	uint32_t val;
+};
+
+void enable_layerscape_ns_access(void);
+
+#endif