2 * (C) Copyright 2002-2004
3 * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 * Marius Groeger <mgroeger@sysgo.de>
10 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
11 * Alex Zuepke <azu@sysgo.de>
13 * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 DECLARE_GLOBAL_DATA_PTR;
36 void serial_setbrg (void)
40 switch (gd->baudrate) {
41 case 1200: reg = 191; break;
42 case 9600: reg = 23; break;
43 case 19200: reg = 11; break;
44 case 38400: reg = 5; break;
45 case 57600: reg = 3; break;
46 case 115200: reg = 1; break;
47 default: hang (); break;
50 /* init serial serial 1,2 */
51 IO_SYSCON1 = SYSCON1_UART1EN;
52 IO_SYSCON2 = SYSCON2_UART2EN;
54 reg |= UBRLCR_WRDLEN8;
62 * Initialise the serial port with the given baudrate. The settings
63 * are always 8 data bits, no parity, 1 stop bit, no start bits.
66 int serial_init (void)
75 * Output a single byte to the serial port.
77 void serial_putc (const char c)
81 /* If \n, also do \r */
85 tmo = get_timer (0) + 1 * CONFIG_SYS_HZ;
86 while (IO_SYSFLG1 & SYSFLG1_UTXFF)
87 if (get_timer (0) > tmo)
94 * Read a single byte from the serial port. Returns 1 on success, 0
95 * otherwise. When the function is succesfull, the character read is
96 * written into its argument c.
98 int serial_tstc (void)
100 return !(IO_SYSFLG1 & SYSFLG1_URXFE);
104 * Read a single byte from the serial port. Returns 1 on success, 0
105 * otherwise. When the function is succesfull, the character read is
106 * written into its argument c.
108 int serial_getc (void)
110 while (IO_SYSFLG1 & SYSFLG1_URXFE);
112 return IO_UARTDR1 & 0xff;
116 serial_puts (const char *s)