diff --git a/plat/socionext/uniphier/include/platform_def.h b/plat/socionext/uniphier/include/platform_def.h
index 546670e..301aa14 100644
--- a/plat/socionext/uniphier/include/platform_def.h
+++ b/plat/socionext/uniphier/include/platform_def.h
@@ -9,6 +9,7 @@
 
 #include <common_def.h>
 #include <tbbr/tbbr_img_def.h>
+#include <utils_def.h>
 
 #define PLATFORM_STACK_SIZE		0x1000
 
@@ -27,26 +28,28 @@
 #define PLAT_MAX_OFF_STATE		2
 #define PLAT_MAX_RET_STATE		1
 
-#define UNIPHIER_SEC_DRAM_BASE		0x80000000
-#define UNIPHIER_SEC_DRAM_LIMIT		0x82000000
+#define BL2_BASE			ULL(0x80000000)
+#define BL2_LIMIT			ULL(0x80080000)
+
+/* 0x80080000-0x81000000: reserved for DSP */
+
+#define UNIPHIER_SEC_DRAM_BASE		0x81000000ULL
+#define UNIPHIER_SEC_DRAM_LIMIT		0x82000000ULL
 #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			ULL(0x81000000)
+#define BL31_LIMIT			ULL(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			ULL(0x81080000)
+#define BL32_LIMIT			ULL(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
diff --git a/plat/socionext/uniphier/uniphier_bl2_setup.c b/plat/socionext/uniphier/uniphier_bl2_setup.c
index daf0c45..29108c0 100644
--- a/plat/socionext/uniphier/uniphier_bl2_setup.c
+++ b/plat/socionext/uniphier/uniphier_bl2_setup.c
@@ -15,6 +15,9 @@
 
 #include "uniphier.h"
 
+#define BL2_END			(unsigned long)(&__BL2_END__)
+#define BL2_SIZE		((BL2_END) - (BL2_BASE))
+
 static int uniphier_bl2_kick_scp;
 
 void bl2_el3_early_platform_setup(u_register_t x0, u_register_t x1,
@@ -24,6 +27,9 @@
 }
 
 static const struct mmap_region uniphier_bl2_mmap[] = {
+	/* for BL31, BL32 */
+	MAP_REGION_FLAT(UNIPHIER_SEC_DRAM_BASE, UNIPHIER_SEC_DRAM_SIZE,
+			MT_MEMORY | MT_RW | MT_SECURE),
 	/* for SCP, BL33 */
 	MAP_REGION_FLAT(UNIPHIER_NS_DRAM_BASE, UNIPHIER_NS_DRAM_SIZE,
 			MT_MEMORY | MT_RW | MT_NS),
@@ -36,8 +42,7 @@
 	int skip_scp = 0;
 	int ret;
 
-	uniphier_mmap_setup(UNIPHIER_SEC_DRAM_BASE, UNIPHIER_SEC_DRAM_SIZE,
-			    uniphier_bl2_mmap);
+	uniphier_mmap_setup(BL2_BASE, BL2_SIZE, uniphier_bl2_mmap);
 	enable_mmu_el3(0);
 
 	soc = uniphier_get_soc_id();
diff --git a/plat/socionext/uniphier/uniphier_io_storage.c b/plat/socionext/uniphier/uniphier_io_storage.c
index bc31350..ed1f6fa 100644
--- a/plat/socionext/uniphier/uniphier_io_storage.c
+++ b/plat/socionext/uniphier/uniphier_io_storage.c
@@ -18,8 +18,11 @@
 
 #include "uniphier.h"
 
-#define UNIPHIER_ROM_REGION_BASE	0x00000000
-#define UNIPHIER_ROM_REGION_SIZE	0x10000000
+#define UNIPHIER_ROM_REGION_BASE	0x00000000ULL
+#define UNIPHIER_ROM_REGION_SIZE	0x10000000ULL
+
+#define UNIPHIER_OCM_REGION_BASE	0x30000000ULL
+#define UNIPHIER_OCM_REGION_SIZE	0x00040000ULL
 
 static const io_dev_connector_t *uniphier_fip_dev_con;
 static uintptr_t uniphier_fip_dev_handle;
@@ -271,6 +274,18 @@
 	if (ret)
 		return ret;
 
+	/*
+	 * on-chip SRAM region: should be DEVICE attribute because the USB
+	 * load functions provided by the ROM use this memory region as a work
+	 * area, but do not cater to cache coherency.
+	 */
+	ret = mmap_add_dynamic_region(UNIPHIER_OCM_REGION_BASE,
+				      UNIPHIER_OCM_REGION_BASE,
+				      UNIPHIER_OCM_REGION_SIZE,
+				      MT_DEVICE | MT_RW | MT_SECURE);
+	if (ret)
+		return ret;
+
 	ret = uniphier_usb_init(soc_id, &block_dev_spec);
 	if (ret)
 		return ret;
diff --git a/plat/socionext/uniphier/uniphier_xlat_setup.c b/plat/socionext/uniphier/uniphier_xlat_setup.c
index 6532c49..3112ecd 100644
--- a/plat/socionext/uniphier/uniphier_xlat_setup.c
+++ b/plat/socionext/uniphier/uniphier_xlat_setup.c
@@ -8,11 +8,8 @@
 #include <platform_def.h>
 #include <xlat_tables_v2.h>
 
-#define UNIPHIER_OCM_REGION_BASE	0x30000000
-#define UNIPHIER_OCM_REGION_SIZE	0x00040000
-
-#define UNIPHIER_REG_REGION_BASE	0x50000000
-#define UNIPHIER_REG_REGION_SIZE	0x20000000
+#define UNIPHIER_REG_REGION_BASE	0x50000000ULL
+#define UNIPHIER_REG_REGION_SIZE	0x20000000ULL
 
 void uniphier_mmap_setup(uintptr_t total_base, size_t total_size,
 			 const struct mmap_region *mmap)
@@ -37,15 +34,6 @@
 			BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE,
 			MT_DEVICE | MT_RW | MT_SECURE);
 
-	/*
-	 * on-chip SRAM region: should be DEVICE attribute because the USB
-	 * load functions provided by the ROM use this memory region as a work
-	 * area, but do not cater to cache coherency.
-	 */
-	mmap_add_region(UNIPHIER_OCM_REGION_BASE, UNIPHIER_OCM_REGION_BASE,
-			UNIPHIER_OCM_REGION_SIZE,
-			MT_DEVICE | MT_RW | MT_SECURE);
-
 	/* register region */
 	mmap_add_region(UNIPHIER_REG_REGION_BASE, UNIPHIER_REG_REGION_BASE,
 			UNIPHIER_REG_REGION_SIZE,