-#define CONFIG_SYS_PCIE3_MEM_BASE 0x80000000
-#define CONFIG_SYS_PCIE3_MEM_PHYS CONFIG_SYS_PCIE3_MEM_BASE
+#define CONFIG_SYS_PCIE3_MEM_VIRT 0x80000000
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_PCIE3_MEM_BUS 0xe0000000
+#define CONFIG_SYS_PCIE3_MEM_PHYS 0xc00000000ull
+#else
+#define CONFIG_SYS_PCIE3_MEM_BUS 0x80000000
+#define CONFIG_SYS_PCIE3_MEM_PHYS 0x80000000
+#endif