diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index e6ca6010f4ff21b7574154782d1b307309591f2b..de44174b257961613efda7e552428acd9661ac50 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -39,12 +39,10 @@
 
 #define MAX_XLAT_TABLES			1
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 28)
-#define SUNXI_BL33_VIRT_BASE		(SUNXI_DRAM_VIRT_BASE + SUNXI_DRAM_SEC_SIZE)
 
-#endif /* SUNXI_BL31_IN_DRAM */
+#define SUNXI_BL33_VIRT_BASE		SUNXI_DRAM_VIRT_BASE
 
-/* How much memory to reserve as secure for BL32, if configured */
-#define SUNXI_DRAM_SEC_SIZE		(32U << 20)
+#endif /* SUNXI_BL31_IN_DRAM */
 
 /* How much DRAM to map (to map BL33, for fetching the DTB from U-Boot) */
 #define SUNXI_DRAM_MAP_SIZE		(64U << 20)
@@ -52,7 +50,7 @@
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 
-#define MAX_STATIC_MMAP_REGIONS		4
+#define MAX_STATIC_MMAP_REGIONS		3
 #define MAX_MMAP_REGIONS		(5 + MAX_STATIC_MMAP_REGIONS)
 
 #define PLAT_CSS_SCP_COM_SHARED_MEM_BASE \
diff --git a/plat/allwinner/common/sunxi_common.c b/plat/allwinner/common/sunxi_common.c
index d60d767aea4555741a72bf23403dbc5800212165..82410b1edf367ab5ceb81e43f0e134af66a98714 100644
--- a/plat/allwinner/common/sunxi_common.c
+++ b/plat/allwinner/common/sunxi_common.c
@@ -19,8 +19,6 @@ static const mmap_region_t sunxi_mmap[MAX_STATIC_MMAP_REGIONS + 1] = {
 			MT_DEVICE | MT_RW | MT_SECURE | MT_EXECUTE_NEVER),
 	MAP_REGION_FLAT(SUNXI_DEV_BASE, SUNXI_DEV_SIZE,
 			MT_DEVICE | MT_RW | MT_SECURE | MT_EXECUTE_NEVER),
-	MAP_REGION(SUNXI_DRAM_BASE, SUNXI_DRAM_VIRT_BASE, SUNXI_DRAM_SEC_SIZE,
-		   MT_RW_DATA | MT_SECURE),
 	MAP_REGION(PRELOADED_BL33_BASE, SUNXI_BL33_VIRT_BASE,
 		   SUNXI_DRAM_MAP_SIZE, MT_RW_DATA | MT_NS),
 	{},