diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index f1e5a9bca24..50921182b7c 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -199,7 +199,7 @@ static struct tagtable __tagtable_##fn __tag = { tag, fn }
 #endif
 
 struct membank {
-	unsigned long start;
+	phys_addr_t start;
 	unsigned long size;
 	unsigned int highmem;
 };
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 77af580953e..9d4a84402ae 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -442,7 +442,7 @@ static struct machine_desc * __init setup_machine(unsigned int nr)
 	return list;
 }
 
-static int __init arm_add_memory(unsigned long start, unsigned long size)
+static int __init arm_add_memory(phys_addr_t start, unsigned long size)
 {
 	struct membank *bank = &meminfo.bank[meminfo.nr_banks];
 
@@ -478,7 +478,8 @@ static int __init arm_add_memory(unsigned long start, unsigned long size)
 static int __init early_mem(char *p)
 {
 	static int usermem __initdata = 0;
-	unsigned long size, start;
+	unsigned long size;
+	phys_addr_t start;
 	char *endp;
 
 	/*