1 #ifndef _GPXE_SERIAL_H 2 #define _GPXE_SERIAL_H 3 4 /** @file 5 * 6 * Serial driver functions 7 * 8 */ 9 10 extern void serial_putc(int ch); 11 extern int serial_getc(void); 12 extern void serial_init(void); 13 14 #endif /* _GPXE_SERIAL_H */ 15