diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
index 4032dfd..4afdd41 100644
--- a/drivers/serial/serial.c
+++ b/drivers/serial/serial.c
@@ -22,6 +22,7 @@
  */
 
 #include <common.h>
+#include <linux/compiler.h>
 
 #include <ns16550.h>
 #ifdef CONFIG_NS87308
@@ -335,4 +336,20 @@
 DECLARE_ESERIAL_FUNCTIONS(4);
 struct serial_device eserial4_device =
 	INIT_ESERIAL_STRUCTURE(4,"eserial3","EUART4");
+
+__weak struct serial_device *default_serial_console(void)
+{
+#if CONFIG_CONS_INDEX == 1
+	return &eserial1_device;
+#elif CONFIG_CONS_INDEX == 2
+	return &eserial2_device;
+#elif CONFIG_CONS_INDEX == 3
+	return &eserial3_device;
+#elif CONFIG_CONS_INDEX == 4
+	return &eserial4_device;
+#else
+#error "Bad CONFIG_CONS_INDEX."
+#endif
+}
+
 #endif /* CONFIG_SERIAL_MULTI */
diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c
index abdbff1..ff35ce5 100644
--- a/drivers/serial/serial_s3c24x0.c
+++ b/drivers/serial/serial_s3c24x0.c
@@ -19,6 +19,7 @@
  */
 
 #include <common.h>
+#include <linux/compiler.h>
 #include <asm/arch/s3c24x0_cpu.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -310,4 +311,17 @@
 DECLARE_S3C_SERIAL_FUNCTIONS(2);
 struct serial_device s3c24xx_serial2_device =
 INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2", "S3UART3");
+
+__weak struct serial_device *default_serial_console(void)
+{
+#if defined(CONFIG_SERIAL1)
+	return &s3c24xx_serial0_device;
+#elif defined(CONFIG_SERIAL2)
+	return &s3c24xx_serial1_device;
+#elif defined(CONFIG_SERIAL3)
+	return &s3c24xx_serial2_device;
+#else
+#error "CONFIG_SERIAL? missing."
+#endif
+}
 #endif /* CONFIG_SERIAL_MULTI */
diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index f1ffa29..6604aa9 100644
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -22,6 +22,7 @@
  */
 
 #include <common.h>
+#include <linux/compiler.h>
 #include <asm/io.h>
 #include <asm/arch/uart.h>
 #include <asm/arch/clk.h>
@@ -205,3 +206,18 @@
 DECLARE_S5P_SERIAL_FUNCTIONS(3);
 struct serial_device s5p_serial3_device =
 	INIT_S5P_SERIAL_STRUCTURE(3, "s5pser3", "S5PUART3");
+
+__weak struct serial_device *default_serial_console(void)
+{
+#if defined(CONFIG_SERIAL0)
+	return &s5p_serial0_device;
+#elif defined(CONFIG_SERIAL1)
+	return &s5p_serial1_device;
+#elif defined(CONFIG_SERIAL2)
+	return &s5p_serial2_device;
+#elif defined(CONFIG_SERIAL3)
+	return &s5p_serial3_device;
+#else
+#error "CONFIG_SERIAL? missing."
+#endif
+}