diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c
index 0bbc0e2dc5d4..36182fcfaebc 100644
--- a/arch/arm/plat-s3c64xx/cpu.c
+++ b/arch/arm/plat-s3c64xx/cpu.c
@@ -68,7 +68,7 @@ static struct cpu_table cpu_ids[] __initdata = {
 
 static struct map_desc s3c_iodesc[] __initdata = {
 	{
-		.virtual	= S3C_VA_SYS,
+		.virtual	= (unsigned long)S3C_VA_SYS,
 		.pfn		= __phys_to_pfn(S3C64XX_PA_SYSCON),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,
@@ -78,22 +78,22 @@ static struct map_desc s3c_iodesc[] __initdata = {
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,
 	}, {
-		.virtual	= S3C_VA_VIC0,
+		.virtual	= (unsigned long)S3C_VA_VIC0,
 		.pfn		= __phys_to_pfn(S3C64XX_PA_VIC0),
 		.length		= SZ_16K,
 		.type		= MT_DEVICE,
 	}, {
-		.virtual	= S3C_VA_VIC1,
+		.virtual	= (unsigned long)S3C_VA_VIC1,
 		.pfn		= __phys_to_pfn(S3C64XX_PA_VIC1),
 		.length		= SZ_16K,
 		.type		= MT_DEVICE,
 	}, {
-		.virtual	= S3C_VA_TIMER,
+		.virtual	= (unsigned long)S3C_VA_TIMER,
 		.pfn		= __phys_to_pfn(S3C_PA_TIMER),
 		.length		= SZ_16K,
 		.type		= MT_DEVICE,
 	}, {
-		.virtual	= S3C64XX_VA_GPIO,
+		.virtual	= (unsigned long)S3C64XX_VA_GPIO,
 		.pfn		= __phys_to_pfn(S3C64XX_PA_GPIO),
 		.length		= SZ_4K,
 		.type		= MT_DEVICE,