diff --git a/common/console.c b/common/console.c
index 7e01886..8c650e0 100644
--- a/common/console.c
+++ b/common/console.c
@@ -479,7 +479,7 @@
 
 /** U-Boot INIT FUNCTIONS *************************************************/
 
-struct stdio_dev *search_device(int flags, char *name)
+struct stdio_dev *search_device(int flags, const char *name)
 {
 	struct stdio_dev *dev;
 
@@ -491,7 +491,7 @@
 	return NULL;
 }
 
-int console_assign(int file, char *devname)
+int console_assign(int file, const char *devname)
 {
 	int flag;
 	struct stdio_dev *dev;
diff --git a/common/stdio.c b/common/stdio.c
index ab7c5ab..b20772c 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -105,7 +105,7 @@
 	return &(devs.list);
 }
 
-struct stdio_dev* stdio_get_by_name(char* name)
+struct stdio_dev* stdio_get_by_name(const char *name)
 {
 	struct list_head *pos;
 	struct stdio_dev *dev;
@@ -155,7 +155,7 @@
  * returns 0 if success, -1 if device is assigned and 1 if devname not found
  */
 #ifdef	CONFIG_SYS_STDIO_DEREGISTER
-int stdio_deregister(char *devname)
+int stdio_deregister(const char *devname)
 {
 	int l;
 	struct list_head *pos;
diff --git a/include/common.h b/include/common.h
index 189ad81..0d1c872 100644
--- a/include/common.h
+++ b/include/common.h
@@ -655,7 +655,7 @@
 /* common/console.c */
 int	console_init_f(void);	/* Before relocation; uses the serial  stuff	*/
 int	console_init_r(void);	/* After  relocation; uses the console stuff	*/
-int	console_assign (int file, char *devname);	/* Assign the console	*/
+int	console_assign(int file, const char *devname);	/* Assign the console	*/
 int	ctrlc (void);
 int	had_ctrlc (void);	/* have we had a Control-C since last clear? */
 void	clear_ctrlc (void);	/* clear the Control-C condition */
diff --git a/include/iomux.h b/include/iomux.h
index e38a81e..fcf0f93 100644
--- a/include/iomux.h
+++ b/include/iomux.h
@@ -43,6 +43,6 @@
 
 int iomux_doenv(const int, const char *);
 void iomux_printdevs(const int);
-struct stdio_dev *search_device(int, char *);
+struct stdio_dev *search_device(int, const char *);
 
 #endif /* _IO_MUX_H */
diff --git a/include/stdio_dev.h b/include/stdio_dev.h
index 83da4cd..82ad463 100644
--- a/include/stdio_dev.h
+++ b/include/stdio_dev.h
@@ -93,10 +93,10 @@
 int	stdio_init (void);
 void	stdio_print_current_devices(void);
 #ifdef CONFIG_SYS_STDIO_DEREGISTER
-int	stdio_deregister(char *devname);
+int	stdio_deregister(const char *devname);
 #endif
 struct list_head* stdio_get_list(void);
-struct stdio_dev* stdio_get_by_name(char* name);
+struct stdio_dev* stdio_get_by_name(const char* name);
 struct stdio_dev* stdio_clone(struct stdio_dev *dev);
 
 #ifdef CONFIG_ARM_DCC_MULTI