serial_initfunc(mpc8xx_serial_initialize);
 serial_initfunc(pxa_serial_initialize);
 serial_initfunc(s3c24xx_serial_initialize);
+serial_initfunc(s5p_serial_initialize);
 
 void serial_register(struct serial_device *dev)
 {
 #endif /* CONFIG_SYS_NS16550_SERIAL */
        pxa_serial_initialize();
        s3c24xx_serial_initialize();
-#if defined(CONFIG_S5P)
-       serial_register(&s5p_serial0_device);
-       serial_register(&s5p_serial1_device);
-       serial_register(&s5p_serial2_device);
-       serial_register(&s5p_serial3_device);
-#endif
+       s5p_serial_initialize();
 #if defined(CONFIG_MPC512X)
 #if defined(CONFIG_SYS_PSC1)
        serial_register(&serial1_device);
 
 #error "CONFIG_SERIAL? missing."
 #endif
 }
+
+void s5p_serial_initialize(void)
+{
+       serial_register(&s5p_serial0_device);
+       serial_register(&s5p_serial1_device);
+       serial_register(&s5p_serial2_device);
+       serial_register(&s5p_serial3_device);
+}
 
 extern struct serial_device uartlite_serial3_device;
 #endif
 
-#if defined(CONFIG_S5P)
-extern struct serial_device s5p_serial0_device;
-extern struct serial_device s5p_serial1_device;
-extern struct serial_device s5p_serial2_device;
-extern struct serial_device s5p_serial3_device;
-#endif
-
 #if defined(CONFIG_OMAP3_ZOOM2)
 extern struct serial_device zoom2_serial_device0;
 extern struct serial_device zoom2_serial_device1;