diff --git a/common/serial.c b/common/serial.c
index 2ede80eb983ae3149d0879d21acfa7ccd64427ea..84f05df8e1f4f9abdfc00ecf5c4bf7b46d639858 100644
--- a/common/serial.c
+++ b/common/serial.c
@@ -41,6 +41,7 @@ static void serial_null(void)
 		__attribute__((weak, alias("serial_null")));
 
 serial_initfunc(mpc8xx_serial_initialize);
+serial_initfunc(ns16550_serial_initialize);
 serial_initfunc(pxa_serial_initialize);
 serial_initfunc(s3c24xx_serial_initialize);
 serial_initfunc(s5p_serial_initialize);
@@ -66,20 +67,7 @@ void serial_register(struct serial_device *dev)
 void serial_initialize(void)
 {
 	mpc8xx_serial_initialize();
-#if defined(CONFIG_SYS_NS16550_SERIAL)
-#if defined(CONFIG_SYS_NS16550_COM1)
-	serial_register(&eserial1_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM2)
-	serial_register(&eserial2_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM3)
-	serial_register(&eserial3_device);
-#endif
-#if defined(CONFIG_SYS_NS16550_COM4)
-	serial_register(&eserial4_device);
-#endif
-#endif /* CONFIG_SYS_NS16550_SERIAL */
+	ns16550_serial_initialize();
 	pxa_serial_initialize();
 	s3c24xx_serial_initialize();
 	s5p_serial_initialize();
diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
index 9d92dee569c0744b06e0c0b65b4205c46c09ed25..00ad97c35b8a5b93728a9c29503bc30e9f47e3ce 100644
--- a/drivers/serial/serial.c
+++ b/drivers/serial/serial.c
@@ -340,4 +340,20 @@ __weak struct serial_device *default_serial_console(void)
 #endif
 }
 
+void ns16550_serial_initialize(void)
+{
+#if defined(CONFIG_SYS_NS16550_COM1)
+	serial_register(&eserial1_device);
+#endif
+#if defined(CONFIG_SYS_NS16550_COM2)
+	serial_register(&eserial2_device);
+#endif
+#if defined(CONFIG_SYS_NS16550_COM3)
+	serial_register(&eserial3_device);
+#endif
+#if defined(CONFIG_SYS_NS16550_COM4)
+	serial_register(&eserial4_device);
+#endif
+}
+
 #endif /* CONFIG_SERIAL_MULTI */
diff --git a/include/serial.h b/include/serial.h
index 71822c671c3da715276842f7d6bb05763ed4b45e..b44fac2496b4a250c311d9eb2df24bc3bab03763 100644
--- a/include/serial.h
+++ b/include/serial.h
@@ -34,14 +34,10 @@ extern struct serial_device *default_serial_console(void);
 	defined(CONFIG_MICROBLAZE)
 extern struct serial_device serial0_device;
 extern struct serial_device serial1_device;
-#if defined(CONFIG_SYS_NS16550_SERIAL)
+#endif
+
 extern struct serial_device eserial1_device;
 extern struct serial_device eserial2_device;
-extern struct serial_device eserial3_device;
-extern struct serial_device eserial4_device;
-#endif /* CONFIG_SYS_NS16550_SERIAL */
-
-#endif
 
 #if defined(CONFIG_OMAP3_ZOOM2)
 extern struct serial_device zoom2_serial_device0;