diff --git a/plat/socionext/uniphier/include/platform_def.h b/plat/socionext/uniphier/include/platform_def.h
index 546670e..9b006a9 100644
--- a/plat/socionext/uniphier/include/platform_def.h
+++ b/plat/socionext/uniphier/include/platform_def.h
@@ -27,26 +27,28 @@
 #define PLAT_MAX_OFF_STATE		2
 #define PLAT_MAX_RET_STATE		1
 
-#define UNIPHIER_SEC_DRAM_BASE		0x80000000
+#define BL2_BASE			0x80000000
+#define BL2_LIMIT			0x80080000
+
+/* 0x80080000-0x81000000: reserved for DSP */
+
+#define UNIPHIER_SEC_DRAM_BASE		0x81000000
 #define UNIPHIER_SEC_DRAM_LIMIT		0x82000000
 #define UNIPHIER_SEC_DRAM_SIZE		((UNIPHIER_SEC_DRAM_LIMIT) - \
 					 (UNIPHIER_SEC_DRAM_BASE))
 
-#define BL2_BASE			(UNIPHIER_SEC_DRAM_BASE)
-#define BL2_LIMIT			((BL2_BASE) + 0x00020000)
+#define BL31_BASE			0x81000000
+#define BL31_LIMIT			0x81080000
 
-#define BL31_BASE			(BL2_LIMIT)
-#define BL31_LIMIT			((BL31_BASE) + 0x00080000)
-
-#define BL32_BASE			(BL31_LIMIT)
-#define BL32_LIMIT			(UNIPHIER_SEC_DRAM_LIMIT)
+#define BL32_BASE			0x81080000
+#define BL32_LIMIT			0x81180000
 
 #define PLAT_PHY_ADDR_SPACE_SIZE	(1ULL << 32)
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 32)
 
 #define PLAT_XLAT_TABLES_DYNAMIC	1
 #define MAX_XLAT_TABLES			7
-#define MAX_MMAP_REGIONS		6
+#define MAX_MMAP_REGIONS		7
 
 #define MAX_IO_HANDLES			2
 #define MAX_IO_DEVICES			2