-#define CONFIG_SYS_SDRAM_BASE (0x48000000)
-#define CONFIG_SYS_SDRAM_SIZE (1024u * 1024 * 1024 - 0x08000000)
-#define CONFIG_SYS_LOAD_ADDR (0x48080000)
-#define CONFIG_NR_DRAM_BANKS 1
+#define DRAM_RSV_SIZE 0x08000000
+#if defined(CONFIG_R8A7795)
+#define CONFIG_NR_DRAM_BANKS 4
+#define PHYS_SDRAM_1 (0x40000000 + DRAM_RSV_SIZE)
+#define PHYS_SDRAM_1_SIZE (0x40000000u - DRAM_RSV_SIZE)
+#define PHYS_SDRAM_2 0x500000000
+#define PHYS_SDRAM_2_SIZE 0x40000000u
+#define PHYS_SDRAM_3 0x600000000
+#define PHYS_SDRAM_3_SIZE 0x40000000u
+#define PHYS_SDRAM_4 0x700000000
+#define PHYS_SDRAM_4_SIZE 0x40000000u
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
+#define CONFIG_SYS_SDRAM_SIZE PHYS_SDRAM_1_SIZE
+#elif defined(CONFIG_R8A7796)
+#define CONFIG_NR_DRAM_BANKS 2
+#define PHYS_SDRAM_1 (0x40000000 + DRAM_RSV_SIZE)
+#define PHYS_SDRAM_1_SIZE (0x80000000u - DRAM_RSV_SIZE)
+#define PHYS_SDRAM_2 0x0600000000
+#define PHYS_SDRAM_2_SIZE 0x80000000u
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
+#define CONFIG_SYS_SDRAM_SIZE PHYS_SDRAM_1_SIZE
+#endif
+#define CONFIG_SYS_LOAD_ADDR 0x48080000
+#define CONFIG_VERY_BIG_RAM
+#define CONFIG_MAX_MEM_MAPPED CONFIG_SYS_SDRAM_SIZE