diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index b46d410..b7cf30f 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -18,11 +18,17 @@
 /* The traditional U-Boot load address is 160MB into DRAM, so at 0x4a000000 */
 #define PLAT_SUNXI_NS_IMAGE_OFFSET	(SUNXI_DRAM_BASE + (160U << 20))
 
+/* How much memory to reserve as secure for BL32, if configured */
+#define SUNXI_DRAM_SEC_SIZE		(32U << 20)
+
+/* How much DRAM to map */
+#define SUNXI_DRAM_MAP_SIZE		(64U << 20)
+
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 
 #define MAX_MMAP_REGIONS		(4 + PLATFORM_MMAP_REGIONS)
-#define MAX_XLAT_TABLES			2
+#define MAX_XLAT_TABLES			1
 
 #define PLAT_MAX_PWR_LVL_STATES		U(2)
 #define PLAT_MAX_RET_STATE		U(1)
@@ -34,13 +40,13 @@
 					 PLATFORM_CORE_COUNT)
 
 #define PLAT_PHY_ADDR_SPACE_SIZE	(1ULL << 32)
-#define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 32)
+#define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 28)
 
 #define PLATFORM_CLUSTER_COUNT		1
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER_COUNT * \
 					 PLATFORM_MAX_CPUS_PER_CLUSTER)
 #define PLATFORM_MAX_CPUS_PER_CLUSTER	4
-#define PLATFORM_MMAP_REGIONS		3
+#define PLATFORM_MMAP_REGIONS		4
 #define PLATFORM_STACK_SIZE		(0x1000 / PLATFORM_CORE_COUNT)
 
 #ifndef SPD_none
diff --git a/plat/allwinner/common/sunxi_common.c b/plat/allwinner/common/sunxi_common.c
index fc9bf20..ef6f04c 100644
--- a/plat/allwinner/common/sunxi_common.c
+++ b/plat/allwinner/common/sunxi_common.c
@@ -17,8 +17,12 @@
 			MT_MEMORY | MT_RW | MT_SECURE),
 	MAP_REGION_FLAT(SUNXI_DEV_BASE, SUNXI_DEV_SIZE,
 			MT_DEVICE | MT_RW | MT_SECURE),
-	MAP_REGION_FLAT(SUNXI_DRAM_BASE, SUNXI_DRAM_SIZE,
-			MT_MEMORY | MT_RW | MT_NS),
+	MAP_REGION(SUNXI_DRAM_BASE, SUNXI_DRAM_VIRT_BASE, SUNXI_DRAM_SEC_SIZE,
+			MT_MEMORY | MT_RW | MT_SECURE),
+	MAP_REGION(PLAT_SUNXI_NS_IMAGE_OFFSET,
+		   SUNXI_DRAM_VIRT_BASE + SUNXI_DRAM_SEC_SIZE,
+		   SUNXI_DRAM_MAP_SIZE,
+		   MT_MEMORY | MT_RO | MT_NS),
 	{},
 };
 
diff --git a/plat/allwinner/sun50i_a64/include/sunxi_mmap.h b/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
index 7d46487..28b1dd3 100644
--- a/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
+++ b/plat/allwinner/sun50i_a64/include/sunxi_mmap.h
@@ -21,7 +21,7 @@
 #define SUNXI_DEV_BASE			0x01000000
 #define SUNXI_DEV_SIZE			0x01000000
 #define SUNXI_DRAM_BASE			0x40000000
-#define SUNXI_DRAM_SIZE			0x80000000
+#define SUNXI_DRAM_VIRT_BASE		0x02000000
 
 /* Memory-mapped devices */
 #define SUNXI_CPU_MBIST_BASE		0x01502000
diff --git a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
index f2d5aed..901e536 100644
--- a/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
+++ b/plat/allwinner/sun50i_h6/include/sunxi_mmap.h
@@ -21,7 +21,7 @@
 #define SUNXI_DEV_BASE			0x01000000
 #define SUNXI_DEV_SIZE			0x09000000
 #define SUNXI_DRAM_BASE			0x40000000
-#define SUNXI_DRAM_SIZE			0xc0000000
+#define SUNXI_DRAM_VIRT_BASE		0x0a000000
 
 /* Memory-mapped devices */
 #define SUNXI_SYSCON_BASE		0x03000000