source: bootcd/isolinux/syslinux-6.03/gpxe/src/config/serial.h

#ifndef CONFIG_SERIAL_H
#define CONFIG_SERIAL_H

/** @file
 *
 * Serial port configuration
 *
 * These options affect the operation of the serial console.  They
 * take effect only if the serial console is included using the
 * CONSOLE_SERIAL option.
 *
 */

FILE_LICENCE ( GPL2_OR_LATER );

#define COM1            0x3f8
#define COM2            0x2f8
#define COM3            0x3e8
#define COM4            0x2e8

#define COMCONSOLE      COM1            /* I/O port address */

/* Keep settings from a previous user of the serial port (e.g. lilo or
 * LinuxBIOS), ignoring COMSPEED, COMDATA, COMPARITY and COMSTOP.
 */
#undef  COMPRESERVE

#ifndef COMPRESERVE
#define COMSPEED        115200          /* Baud rate */
#define COMDATA         8               /* Data bits */
#define COMPARITY       0               /* Parity: 0=None, 1=Odd, 2=Even */
#define COMSTOP         1               /* Stop bits */
#endif

#endif /* CONFIG_SERIAL_H */