diff --git a/include/plat/arm/common/arm_def.h b/include/plat/arm/common/arm_def.h
index 5dae30e..55747bf 100644
--- a/include/plat/arm/common/arm_def.h
+++ b/include/plat/arm/common/arm_def.h
@@ -95,6 +95,23 @@
 #define ARM_TZC_NS_DRAM_S_ACCESS	TZC_REGION_S_NONE
 #endif
 
+#ifdef SPD_opteed
+/*
+ * BL2 needs to map 3.5MB from 512KB offset in TZC_DRAM1 in order to
+ * load/authenticate the trusted os extra image. The first 512KB of TZC_DRAM1
+ * are reserved for trusted os (OPTEE). The extra image loading for OPTEE is
+ * paged image which only include the paging part using virtual memory but
+ * without "init" data. OPTEE will copy the "init" data (from pager image) to
+ * the first 512KB of TZC_DRAM, and then copy the extra image behind the "init"
+ * data.
+ */
+#define ARM_OPTEE_PAGEABLE_LOAD_BASE	(ARM_AP_TZC_DRAM1_BASE + 0x80000)
+#define ARM_OPTEE_PAGEABLE_LOAD_SIZE	0x380000
+#define ARM_OPTEE_PAGEABLE_LOAD_MEM	MAP_REGION_FLAT(		\
+					ARM_OPTEE_PAGEABLE_LOAD_BASE,	\
+					ARM_OPTEE_PAGEABLE_LOAD_SIZE,	\
+					MT_MEMORY | MT_RW | MT_SECURE)
+#endif /* SPD_opteed */
 
 #define ARM_NS_DRAM1_BASE		ARM_DRAM1_BASE
 #define ARM_NS_DRAM1_SIZE		(ARM_DRAM1_SIZE -		\