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* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <common.h>
#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
DECLARE_GLOBAL_DATA_PTR;
void serial_setbrg (void)
{
unsigned int reg = 0;
switch (gd->baudrate) {
case 1200: reg = 191; break;
case 9600: reg = 23; break;
case 19200: reg = 11; break;
case 38400: reg = 5; break;
case 57600: reg = 3; break;
case 115200: reg = 1; break;
default: hang (); break;
}
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/* init serial serial 1,2 */
IO_SYSCON1 = SYSCON1_UART1EN;
IO_SYSCON2 = SYSCON2_UART2EN;
reg |= UBRLCR_WRDLEN8;
IO_UBRLCR1 = reg;
IO_UBRLCR2 = reg;
}
/*
* Initialise the serial port with the given baudrate. The settings
* are always 8 data bits, no parity, 1 stop bit, no start bits.
*
*/
int serial_init (void)
{
serial_setbrg ();
return (0);
}
/*
* Output a single byte to the serial port.
*/
void serial_putc (const char c)
{
int tmo;
/* If \n, also do \r */
if (c == '\n')
serial_putc ('\r');
tmo = get_timer (0) + 1 * CONFIG_SYS_HZ;
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while (IO_SYSFLG1 & SYSFLG1_UTXFF)
if (get_timer (0) > tmo)
break;
IO_UARTDR1 = c;
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int serial_tstc (void)
{
return !(IO_SYSFLG1 & SYSFLG1_URXFE);
}
/*
* Read a single byte from the serial port. Returns 1 on success, 0
* otherwise. When the function is succesfull, the character read is
* written into its argument c.
*/
int serial_getc (void)
{
while (IO_SYSFLG1 & SYSFLG1_URXFE);
return IO_UARTDR1 & 0xff;
}
void
serial_puts (const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
