diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 9ea8bfd..ab32b18 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -793,6 +793,15 @@
 	TLBIRPALOS(addr, TLBI_SZ_512M);
 }
 
+/*
+ * Invalidate TLBs of GPT entries by Physical address, last level.
+ *
+ * @pa: the starting address for the range
+ *      of invalidation
+ * @size: size of the range of invalidation
+ */
+void gpt_tlbi_by_pa_ll(uint64_t pa, size_t size);
+
 /* Previously defined accessor functions with incomplete register names  */
 
 #define read_current_el()	read_CurrentEl()