diff --git a/plat/arm/board/fvp/fvp_def.h b/plat/arm/board/fvp/fvp_def.h
index 5ac5d3c..acf3cf4 100644
--- a/plat/arm/board/fvp/fvp_def.h
+++ b/plat/arm/board/fvp/fvp_def.h
@@ -142,4 +142,15 @@
 #define FVP_NSAID_HDLCD0		2
 #define FVP_NSAID_CLCD			7
 
+/*******************************************************************************
+ * Memprotect definitions
+ ******************************************************************************/
+/* PSCI memory protect definitions:
+ * This variable is stored in a non-secure flash because some ARM reference
+ * platforms do not have secure NVRAM. Real systems that provided MEM_PROTECT
+ * support must use a secure NVRAM to store the PSCI MEM_PROTECT definitions.
+ */
+#define PLAT_ARM_MEM_PROT_ADDR		(V2M_FLASH0_BASE + \
+					 V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
+
 #endif /* __FVP_DEF_H__ */
diff --git a/plat/arm/board/juno/juno_def.h b/plat/arm/board/juno/juno_def.h
index d2834e1..63e2456 100644
--- a/plat/arm/board/juno/juno_def.h
+++ b/plat/arm/board/juno/juno_def.h
@@ -79,4 +79,15 @@
 #define JUNO_IRQ_GPU_SMMU_1		73
 #define JUNO_IRQ_ETR_SMMU		75
 
+/*******************************************************************************
+ * Memprotect definitions
+ ******************************************************************************/
+/* PSCI memory protect definitions:
+ * This variable is stored in a non-secure flash because some ARM reference
+ * platforms do not have secure NVRAM. Real systems that provided MEM_PROTECT
+ * support must use a secure NVRAM to store the PSCI MEM_PROTECT definitions.
+ */
+#define PLAT_ARM_MEM_PROT_ADDR		(V2M_FLASH0_BASE + \
+					 V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
+
 #endif /* __JUNO_DEF_H__ */
diff --git a/plat/arm/css/sgi/include/platform_def.h b/plat/arm/css/sgi/include/platform_def.h
index 0f02407..84ef2c4 100644
--- a/plat/arm/css/sgi/include/platform_def.h
+++ b/plat/arm/css/sgi/include/platform_def.h
@@ -96,4 +96,16 @@
 		GET_SSC_VERSION_CONFIG(mmio_read_32(SSC_VERSION))
 #endif /* __ASSEMBLY__ */
 
+/*******************************************************************************
+ * Memprotect definitions
+ ******************************************************************************/
+/* PSCI memory protect definitions:
+ * This variable is stored in a non-secure flash because some ARM reference
+ * platforms do not have secure NVRAM. Real systems that provided MEM_PROTECT
+ * support must use a secure NVRAM to store the PSCI MEM_PROTECT definitions.
+ */
+#define PLAT_ARM_MEM_PROT_ADDR		(V2M_FLASH0_BASE + \
+					 V2M_FLASH0_SIZE - V2M_FLASH_BLOCK_SIZE)
+
+
 #endif /* __PLATFORM_DEF_H__ */