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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CONSOLE_UART_H
#define CONSOLE_UART_H
#include <stdint.h>
/* Return the clock frequency UART uses as reference clock for
* baudrate generator. */
unsigned int uart_platform_refclk(void);
/* Return the baudrate determined from option_table, or when that is
* not used, CONFIG_TTYS0_BAUD.
*/
unsigned int default_baudrate(void);
/* Returns the divisor value for a given baudrate.
* The formula to satisfy is:
* refclk / divisor = baudrate * oversample
*/
unsigned int uart_baudrate_divisor(unsigned int baudrate,
unsigned int refclk, unsigned int oversample);
void uart_init(void);
void uart_tx_byte(unsigned char data);
void uart_tx_flush(void);
unsigned char uart_rx_byte(void);
int uart_can_rx_byte(void);
unsigned int uart_platform_base(int idx);
#if !defined(__ROMCC__)
static inline void *uart_platform_baseptr(int idx)
{
return (void *)uart_platform_base(idx);
}
#endif
void oxford_init(void);
void oxford_remap(unsigned int new_base);
#endif /* CONSOLE_UART_H */
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