diff --git a/arch/arm/mach-s5pv210/include/mach/map.h b/arch/arm/mach-s5pv210/include/mach/map.h
index 12a409f964ca2d9666078075bd4f034c7947c9ce..0e24ba14cd265b4e13f1b7e5c0c122e0c8b47b65 100644
--- a/arch/arm/mach-s5pv210/include/mach/map.h
+++ b/arch/arm/mach-s5pv210/include/mach/map.h
@@ -57,6 +57,8 @@
 
 #define S5P_SZ_UART		SZ_256
 
+#define S3C_VA_UARTx(x)		(S3C_VA_UART + ((x) * S3C_UART_OFFSET))
+
 #define S5PV210_PA_SROMC	(0xE8000000)
 
 #define S5PV210_PA_CFCON	(0xE8200000)