#ifndef __SERIAL_H__
  #define __SERIAL_H__

  #include <post.h>

  struct serial_device {

  	/* enough bytes to match alignment of following func pointer */

  	char	name[16];

  	int	(*start)(void);
  	int	(*stop)(void);

  	void	(*setbrg)(void);
  	int	(*getc)(void);
  	int	(*tstc)(void);
  	void	(*putc)(const char c);
  	void	(*puts)(const char *s);

  #if CONFIG_POST & CONFIG_SYS_POST_UART

  	void	(*loop)(int);

  #endif

  	struct serial_device	*next;

  };

  void default_serial_puts(const char *s);

  extern struct serial_device serial_smc_device;
  extern struct serial_device serial_scc_device;

  extern struct serial_device *default_serial_console(void);

  #if	defined(CONFIG_405GP) || \

  	defined(CONFIG_405EP) || defined(CONFIG_405EZ) || \
  	defined(CONFIG_405EX) || defined(CONFIG_440) || \
  	defined(CONFIG_MB86R0x) || defined(CONFIG_MPC5xxx) || \
  	defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || \
  	defined(CONFIG_MPC86xx) || defined(CONFIG_SYS_SC520) || \

  	defined(CONFIG_TEGRA) || defined(CONFIG_SYS_COREBOOT) || \

  	defined(CONFIG_MICROBLAZE)

  extern struct serial_device serial0_device;
  extern struct serial_device serial1_device;

  #endif

  extern struct serial_device eserial1_device;
  extern struct serial_device eserial2_device;

  extern void serial_register(struct serial_device *);

  extern void serial_initialize(void);

  extern void serial_stdio_init(void);

  extern int serial_assign(const char *name);

  extern void serial_reinit_all(void);

  /* For usbtty */

  #ifdef CONFIG_USB_TTY

  extern int usbtty_getc(void);
  extern void usbtty_putc(const char c);
  extern void usbtty_puts(const char *str);
  extern int usbtty_tstc(void);

  #else
  
  /* stubs */
  #define usbtty_getc() 0
  #define usbtty_putc(a)
  #define usbtty_puts(a)
  #define usbtty_tstc() 0
  
  #endif /* CONFIG_USB_TTY */

  #if defined(CONFIG_MPC512X)

  extern struct stdio_dev *open_port(int num, int baudrate);
  extern int close_port(int num);
  extern int write_port(struct stdio_dev *port, char *buf);
  extern int read_port(struct stdio_dev *port, char *buf, int size);
  #endif

  #endif