1. 根目录:
2. arch
3. avr32
4. include
5. asm
6. serial.h

#ifndef _ASM_SERIAL_H
#define _ASM_SERIAL_H

/*
 * This assumes you have a 1.8432 MHz clock for your UART.
 *
 * It'd be nice if someone built a serial card with a 24.576 MHz
 * clock, since the 16550A is capable of handling a top speed of 1.5
 * megabits/second; but this requires the faster clock.
 */
#define BASE_BAUD (1843200 / 16)

#endif /* _ASM_SERIAL_H */