diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index f268167..f7d2420 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -223,6 +223,14 @@
 #define ID_AA64MMFR0_EL1_TGRAN16_SUPPORTED	ULL(0x1)
 #define ID_AA64MMFR0_EL1_TGRAN16_NOT_SUPPORTED	ULL(0x0)
 
+/* ID_AA64MMFR1_EL1 definitions */
+#define ID_AA64MMFR1_EL1_PAN_SHIFT		U(20)
+#define ID_AA64MMFR1_EL1_PAN_MASK		ULL(0xf)
+#define ID_AA64MMFR1_EL1_PAN_NOT_SUPPORTED	ULL(0x0)
+#define ID_AA64MMFR1_EL1_PAN_SUPPORTED		ULL(0x1)
+#define ID_AA64MMFR1_EL1_PAN2_SUPPORTED		ULL(0x2)
+#define ID_AA64MMFR1_EL1_PAN3_SUPPORTED		ULL(0x3)
+
 /* ID_AA64MMFR2_EL1 definitions */
 #define ID_AA64MMFR2_EL1		S3_0_C0_C7_2
 
@@ -289,6 +297,7 @@
 #define SCTLR_WXN_BIT		(ULL(1) << 19)
 #define SCTLR_UWXN_BIT		(ULL(1) << 20)
 #define SCTLR_IESB_BIT		(ULL(1) << 21)
+#define SCTLR_SPAN_BIT		(ULL(1) << 23)
 #define SCTLR_E0E_BIT		(ULL(1) << 24)
 #define SCTLR_EE_BIT		(ULL(1) << 25)
 #define SCTLR_UCI_BIT		(ULL(1) << 26)
@@ -371,6 +380,7 @@
 #define HCR_AMVOFFEN_BIT	(ULL(1) << 51)
 #define HCR_API_BIT		(ULL(1) << 41)
 #define HCR_APK_BIT		(ULL(1) << 40)
+#define HCR_E2H_BIT		(ULL(1) << 34)
 #define HCR_TGE_BIT		(ULL(1) << 27)
 #define HCR_RW_SHIFT		U(31)
 #define HCR_RW_BIT		(ULL(1) << HCR_RW_SHIFT)
@@ -952,6 +962,12 @@
 #define ERXPFGCTL_CDEN_BIT	(U(1) << 31)
 
 /*******************************************************************************
+ * Armv8.1 Registers - Privileged Access Never Registers
+ ******************************************************************************/
+#define PAN			S3_0_C4_C2_3
+#define PAN_BIT			BIT(22)
+
+/*******************************************************************************
  * Armv8.3 Pointer Authentication Registers
  ******************************************************************************/
 #define APIAKeyLo_EL1		S3_0_C2_C1_0
diff --git a/include/lib/aarch64/arch_features.h b/include/lib/aarch64/arch_features.h
index 15eb784..0ecd039 100644
--- a/include/lib/aarch64/arch_features.h
+++ b/include/lib/aarch64/arch_features.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2021, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -17,6 +17,12 @@
 	return true;
 }
 
+static inline bool is_armv8_1_pan_present(void)
+{
+	return ((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_PAN_SHIFT) &
+		ID_AA64MMFR1_EL1_PAN_MASK) != 0U;
+}
+
 static inline bool is_armv8_2_sve_present(void)
 {
 	return ((read_id_aa64pfr0_el1() >> ID_AA64PFR0_SVE_SHIFT) &
@@ -56,6 +62,12 @@
 	return (read_id_aa64isar1_el1() & mask) != 0U;
 }
 
+static inline bool is_armv8_4_dit_present(void)
+{
+	return ((read_id_aa64pfr0_el1() >> ID_AA64PFR0_DIT_SHIFT) &
+		ID_AA64PFR0_DIT_MASK) == 1U;
+}
+
 static inline bool is_armv8_4_ttst_present(void)
 {
 	return ((read_id_aa64mmfr2_el1() >> ID_AA64MMFR2_EL1_ST_SHIFT) &
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index 39f1e3b..801ad08 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -187,6 +187,8 @@
 DEFINE_SYSREG_READ_FUNC(CurrentEl)
 DEFINE_SYSREG_READ_FUNC(ctr_el0)
 DEFINE_SYSREG_RW_FUNCS(daif)
+DEFINE_SYSREG_RW_FUNCS(nzcv)
+DEFINE_SYSREG_READ_FUNC(spsel)
 DEFINE_SYSREG_RW_FUNCS(spsr_el1)
 DEFINE_SYSREG_RW_FUNCS(spsr_el2)
 DEFINE_SYSREG_RW_FUNCS(spsr_el3)
@@ -292,6 +294,7 @@
 DEFINE_SYSREG_READ_FUNC(midr_el1)
 DEFINE_SYSREG_READ_FUNC(mpidr_el1)
 DEFINE_SYSREG_READ_FUNC(id_aa64mmfr0_el1)
+DEFINE_SYSREG_READ_FUNC(id_aa64mmfr1_el1)
 
 DEFINE_SYSREG_RW_FUNCS(scr_el3)
 DEFINE_SYSREG_RW_FUNCS(hcr_el2)
@@ -451,6 +454,9 @@
 DEFINE_RENAME_SYSREG_READ_FUNC(erxmisc0_el1, ERXMISC0_EL1)
 DEFINE_RENAME_SYSREG_READ_FUNC(erxmisc1_el1, ERXMISC1_EL1)
 
+/* Armv8.1 Registers */
+DEFINE_RENAME_SYSREG_RW_FUNCS(pan, PAN)
+
 /* Armv8.2 Registers */
 DEFINE_RENAME_SYSREG_READ_FUNC(id_aa64mmfr2_el1, ID_AA64MMFR2_EL1)
 
@@ -479,6 +485,9 @@
 DEFINE_RENAME_SYSREG_RW_FUNCS(rgsr_el1, RGSR_EL1)
 DEFINE_RENAME_SYSREG_RW_FUNCS(gcr_el1, GCR_EL1)
 
+/* Armv8.4 Data Independent Timing */
+DEFINE_RENAME_SYSREG_RW_FUNCS(dit, DIT)
+
 /* Armv8.6 Fine Grained Virtualization Traps Registers */
 DEFINE_RENAME_SYSREG_RW_FUNCS(hfgrtr_el2,  HFGRTR_EL2)
 DEFINE_RENAME_SYSREG_RW_FUNCS(hfgwtr_el2,  HFGWTR_EL2)