include/asm-arc/serial.h

/*
 * Copyright Codito Technologies (www.codito.com)
 *
 *  include/asm-arc/serial.h
 *
 *  Copyright (C)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Authors : Sandeep Patil (sandeep.patil@codito.com)
 *           Pradeep Sawlani (pradeep.sawlani@codito.com)
 */

#ifndef	_ASM_ARC_SERIAL_H
#define	_ASM_ARC_SERIAL_H

#include <config.h>

typedef volatile struct {
	volatile unsigned char id0 __attribute__((aligned(4)));
	volatile unsigned char id1 __attribute__((aligned(4)));
	volatile unsigned char id2 __attribute__((aligned(4)));
	volatile unsigned char id3 __attribute__((aligned(4)));
	volatile unsigned char data __attribute__((aligned(4)));
	volatile unsigned char status __attribute__((aligned(4)));
	volatile unsigned char baudl __attribute__((aligned(4)));
	volatile unsigned char baudh __attribute__((aligned(4)));
} arc_uart;

/*
 * Define the number of ports supported and their irqs.
 */
#define NR_PORTS 1

#define	CONSOLE_BAUD_RATE CONFIG_ARC_SERIAL_BAUD


#define UART_RXENB		0x04
#define UART_RXEMPTY		0x20
#define UART_FRAME_ERR		0x01
#define UART_OVERFLOW_ERR	0x02

#define UART_TXENB		0x40
#define UART_TXEMPTY		0x80

/* UART control registers */
#define ARC_UART_CREG_DATATX	UART_BASEADDR + 0x4
#define ARC_UART_CREG_DATARX	UART_BASEADDR + 0x4
#define ARC_UART_CREG_STATUS	UART_BASEADDR + 0x5
#endif	/* _ASM_ARC_SERIAL_H */