diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index fb8cbc0..bef6032 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -155,7 +155,10 @@
 #define SCTLR_A_BIT		(1 << 1)
 #define SCTLR_C_BIT		(1 << 2)
 #define SCTLR_SA_BIT		(1 << 3)
+#define SCTLR_CP15BEN_BIT	(1 << 5)
 #define SCTLR_I_BIT		(1 << 12)
+#define SCTLR_NTWI_BIT		(1 << 16)
+#define SCTLR_NTWE_BIT		(1 << 18)
 #define SCTLR_WXN_BIT		(1 << 19)
 #define SCTLR_EE_BIT		(1 << 25)