diff --git a/include/common/aarch64/el3_common_macros.S b/include/common/aarch64/el3_common_macros.S
index 03b977e..143c70c 100644
--- a/include/common/aarch64/el3_common_macros.S
+++ b/include/common/aarch64/el3_common_macros.S
@@ -70,9 +70,14 @@
 	 *
 	 * SCR_EL3.EA: Set to one to route External Aborts and SError Interrupts
 	 *  to EL3 when executing at any EL.
+	 *
+	 * SCR_EL3.{API,APK}: For Armv8.3 pointer authentication feature,
+	 * disable traps to EL3 when accessing key registers or using pointer
+	 * authentication instructions from lower ELs.
 	 * ---------------------------------------------------------------------
 	 */
-	mov	x0, #((SCR_RESET_VAL | SCR_EA_BIT | SCR_SIF_BIT) \
+	mov_imm	x0, ((SCR_RESET_VAL | SCR_EA_BIT | SCR_SIF_BIT | \
+				SCR_API_BIT | SCR_APK_BIT) \
 			& ~(SCR_TWE_BIT | SCR_TWI_BIT | SCR_SMD_BIT))
 	msr	scr_el3, x0
 
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index a6022cb..e6842e1 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -218,6 +218,8 @@
 /* SCR definitions */
 #define SCR_RES1_BITS		((U(1) << 4) | (U(1) << 5))
 #define SCR_FIEN_BIT		(U(1) << 21)
+#define SCR_API_BIT		(U(1) << 17)
+#define SCR_APK_BIT		(U(1) << 16)
 #define SCR_TWE_BIT		(U(1) << 13)
 #define SCR_TWI_BIT		(U(1) << 12)
 #define SCR_ST_BIT		(U(1) << 11)
@@ -274,6 +276,8 @@
 #define VTTBR_BADDR_SHIFT	U(0)
 
 /* HCR definitions */
+#define HCR_API_BIT		(ULL(1) << 41)
+#define HCR_APK_BIT		(ULL(1) << 40)
 #define HCR_RW_SHIFT		U(31)
 #define HCR_RW_BIT		(ULL(1) << HCR_RW_SHIFT)
 #define HCR_AMO_BIT		(ULL(1) << 5)