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
33 #if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
37 DECLARE_GLOBAL_DATA_PTR;
39 void serial_setbrg (void)
43 switch (gd->baudrate) {
44 case 1200: reg = 191; break;
45 case 9600: reg = 23; break;
46 case 19200: reg = 11; break;
47 case 38400: reg = 5; break;
48 case 57600: reg = 3; break;
49 case 115200: reg = 1; break;
50 default: hang (); break;
53 /* init serial serial 1,2 */
54 IO_SYSCON1 = SYSCON1_UART1EN;
55 IO_SYSCON2 = SYSCON2_UART2EN;
57 reg |= UBRLCR_WRDLEN8;
65 * Initialise the serial port with the given baudrate. The settings
66 * are always 8 data bits, no parity, 1 stop bit, no start bits.
69 int serial_init (void)
78 * Output a single byte to the serial port.
80 void serial_putc (const char c)
84 /* If \n, also do \r */
88 tmo = get_timer (0) + 1 * CFG_HZ;
89 while (IO_SYSFLG1 & SYSFLG1_UTXFF)
90 if (get_timer (0) > tmo)
97 * Read a single byte from the serial port. Returns 1 on success, 0
98 * otherwise. When the function is succesfull, the character read is
99 * written into its argument c.
101 int serial_tstc (void)
103 return !(IO_SYSFLG1 & SYSFLG1_URXFE);
107 * Read a single byte from the serial port. Returns 1 on success, 0
108 * otherwise. When the function is succesfull, the character read is
109 * written into its argument c.
111 int serial_getc (void)
113 while (IO_SYSFLG1 & SYSFLG1_URXFE);
115 return IO_UARTDR1 & 0xff;
119 serial_puts (const char *s)
126 #elif defined(CONFIG_LPC2292)
128 #include <asm/arch/hardware.h>
130 void serial_setbrg (void)
132 DECLARE_GLOBAL_DATA_PTR;
134 unsigned short divisor = 0;
136 switch (gd->baudrate) {
137 case 1200: divisor = 3072; break;
138 case 9600: divisor = 384; break;
139 case 19200: divisor = 192; break;
140 case 38400: divisor = 96; break;
141 case 57600: divisor = 64; break;
142 case 115200: divisor = 32; break;
143 default: hang (); break;
146 /* init serial UART0 */
149 PUT8(U0LCR, 0x80); /* DLAB=1 */
150 PUT8(U0DLL, (unsigned char)(divisor & 0x00FF));
151 PUT8(U0DLM, (unsigned char)(divisor >> 8));
152 PUT8(U0LCR, 0x03); /* 8N1, DLAB=0 */
153 PUT8(U0FCR, 1); /* Enable RX and TX FIFOs */
156 int serial_init (void)
158 unsigned long pinsel0;
162 pinsel0 = GET32(PINSEL0);
163 pinsel0 &= ~(0x00000003);
165 PUT32(PINSEL0, pinsel0);
170 void serial_putc (const char c)
174 while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
178 while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
182 int serial_getc (void)
184 while((GET8(U0LSR) & 1) == 0);
189 serial_puts (const char *s)
196 /* Test if there is a byte to read */
197 int serial_tstc (void)
199 return (GET8(U0LSR) & 1);