diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index 5876ce8..f1ad9bb 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -31,6 +31,7 @@
 #ifndef __ARCH_H__
 #define __ARCH_H__
 
+#include <utils.h>
 
 /*******************************************************************************
  * MIDR bit definitions
@@ -418,6 +419,15 @@
 #define EC_BITS(x)			(x >> ESR_EC_SHIFT) & ESR_EC_MASK
 
 /*******************************************************************************
+ * Definitions of register offsets, fields and macros for CPU system
+ * instructions.
+ ******************************************************************************/
+
+#define TLBI_ADDR_SHIFT		12
+#define TLBI_ADDR_MASK		ULL(0x00000FFFFFFFFFFF)
+#define TLBI_ADDR(x)		(((x) >> TLBI_ADDR_SHIFT) & TLBI_ADDR_MASK)
+
+/*******************************************************************************
  * Definitions of register offsets and fields in the CNTCTLBase Frame of the
  * system level implementation of the Generic Timer.
  ******************************************************************************/
diff --git a/include/lib/aarch64/arch_helpers.h b/include/lib/aarch64/arch_helpers.h
index d70c9ae..d4507cc 100644
--- a/include/lib/aarch64/arch_helpers.h
+++ b/include/lib/aarch64/arch_helpers.h
@@ -124,6 +124,13 @@
 DEFINE_SYSOP_TYPE_FUNC(tlbi, alle3is)
 DEFINE_SYSOP_TYPE_FUNC(tlbi, vmalle1)
 
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaae1is)
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vaale1is)
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae2is)
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale2is)
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vae3is)
+DEFINE_SYSOP_TYPE_PARAM_FUNC(tlbi, vale3is)
+
 /*******************************************************************************
  * Cache maintenance accessor prototypes
  ******************************************************************************/
@@ -181,6 +188,7 @@
 DEFINE_SYSOP_TYPE_FUNC(dmb, st)
 DEFINE_SYSOP_TYPE_FUNC(dmb, ld)
 DEFINE_SYSOP_TYPE_FUNC(dsb, ish)
+DEFINE_SYSOP_TYPE_FUNC(dsb, ishst)
 DEFINE_SYSOP_TYPE_FUNC(dmb, ish)
 DEFINE_SYSOP_FUNC(isb)