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
36 void serial_setbrg (void)
38 DECLARE_GLOBAL_DATA_PTR;
42 if (gd->baudrate == 1200)
44 else if (gd->baudrate == 9600)
46 else if (gd->baudrate == 19200)
48 else if (gd->baudrate == 38400)
50 else if (gd->baudrate == 57600)
52 else if (gd->baudrate == 115200)
57 /* init serial serial 1,2 */
58 IO_SYSCON1 = SYSCON1_UART1EN;
59 IO_SYSCON2 = SYSCON2_UART2EN;
61 reg |= UBRLCR_WRDLEN8;
69 * Initialise the serial port with the given baudrate. The settings
70 * are always 8 data bits, no parity, 1 stop bit, no start bits.
73 int serial_init (void)
82 * Output a single byte to the serial port.
84 void serial_putc (const char c)
88 /* If \n, also do \r */
92 tmo = get_timer (0) + 1 * CFG_HZ;
93 while (IO_SYSFLG1 & SYSFLG1_UTXFF)
94 if (get_timer (0) > tmo)
101 * Read a single byte from the serial port. Returns 1 on success, 0
102 * otherwise. When the function is succesfull, the character read is
103 * written into its argument c.
105 int serial_tstc (void)
107 return !(IO_SYSFLG1 & SYSFLG1_URXFE);
111 * Read a single byte from the serial port. Returns 1 on success, 0
112 * otherwise. When the function is succesfull, the character read is
113 * written into its argument c.
115 int serial_getc (void)
117 while (IO_SYSFLG1 & SYSFLG1_URXFE);
119 return IO_UARTDR1 & 0xff;
123 serial_puts (const char *s)
130 #endif /* CONFIG_NETARM */