source: SVN/rincon/u-boot/board/bmw/serial.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 1.8 KB
Line 
1/*
2 * (C) Copyright 2000
3 * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include "ns16550.h"
26
27DECLARE_GLOBAL_DATA_PTR;
28
29#if CONFIG_CONS_INDEX == 1
30static struct NS16550 *console =
31                (struct NS16550 *) (CFG_EUMB_ADDR + 0x4500);
32#elif CONFIG_CONS_INDEX == 2
33static struct NS16550 *console =
34                (struct NS16550 *) (CFG_EUMB_ADDR + 0x4500);
35#else
36#error no valid console defined
37#endif
38
39extern ulong get_bus_freq (ulong);
40
41int serial_init (void)
42{
43        int clock_divisor = gd->bus_clk / 16 / gd->baudrate;
44
45        NS16550_init (CONFIG_CONS_INDEX - 1, clock_divisor);
46
47        return (0);
48}
49
50void serial_putc (const char c)
51{
52        if (c == '\n') {
53                serial_putc ('\r');
54        }
55        NS16550_putc (console, c);
56}
57
58void serial_puts (const char *s)
59{
60        while (*s) {
61                serial_putc (*s++);
62        }
63}
64
65
66int serial_getc (void)
67{
68        return NS16550_getc (console);
69}
70
71int serial_tstc (void)
72{
73        return NS16550_tstc (console);
74}
75
76void serial_setbrg (void)
77{
78        int clock_divisor = get_bus_freq (0) / 16 / gd->baudrate;
79
80        NS16550_reinit (console, clock_divisor);
81}
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