source: SVN/rincon/u-boot/board/evb64260/serial.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 3.2 KB
Line 
1/*
2 * (C) Copyright 2001
3 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
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/*
25 * serial.c - serial support for the gal ev board
26 */
27
28/* supports both the 16650 duart and the MPSC */
29
30#include <common.h>
31#include <command.h>
32#include <galileo/memory.h>
33
34#if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2)
35#include <ns16550.h>
36#endif
37
38#include "serial.h"
39
40#include "mpsc.h"
41
42DECLARE_GLOBAL_DATA_PTR;
43
44#if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2)
45const NS16550_t COM_PORTS[] = { (NS16550_t) CFG_NS16550_COM1,
46                                (NS16550_t) CFG_NS16550_COM2 };
47#endif
48
49#ifdef CONFIG_MPSC
50
51int serial_init (void)
52{
53#if (defined CFG_INIT_CHAN1) || (defined CFG_INIT_CHAN2)
54        int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
55#endif
56
57        mpsc_init(gd->baudrate);
58
59        /* init the DUART chans so that KGDB in the kernel can use them */
60#ifdef CFG_INIT_CHAN1
61        NS16550_reinit(COM_PORTS[0], clock_divisor);
62#endif
63#ifdef CFG_INIT_CHAN2
64        NS16550_reinit(COM_PORTS[1], clock_divisor);
65#endif
66        return (0);
67}
68
69void
70serial_putc(const char c)
71{
72        if (c == '\n')
73                mpsc_putchar('\r');
74
75        mpsc_putchar(c);
76}
77
78int
79serial_getc(void)
80{
81        return mpsc_getchar();
82}
83
84int
85serial_tstc(void)
86{
87        return mpsc_test_char();
88}
89
90void
91serial_setbrg (void)
92{
93        galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate);
94}
95
96#else /* ! CONFIG_MPSC */
97
98int serial_init (void)
99{
100        int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
101
102#ifdef CFG_INIT_CHAN1
103        (void)NS16550_init(COM_PORTS[0], clock_divisor);
104#endif
105#ifdef CFG_INIT_CHAN2
106        (void)NS16550_init(COM_PORTS[1], clock_divisor);
107#endif
108
109        return (0);
110}
111
112void
113serial_putc(const char c)
114{
115        if (c == '\n')
116                NS16550_putc(COM_PORTS[CFG_DUART_CHAN], '\r');
117
118        NS16550_putc(COM_PORTS[CFG_DUART_CHAN], c);
119}
120
121int
122serial_getc(void)
123{
124        return NS16550_getc(COM_PORTS[CFG_DUART_CHAN]);
125}
126
127int
128serial_tstc(void)
129{
130        return NS16550_tstc(COM_PORTS[CFG_DUART_CHAN]);
131}
132
133void
134serial_setbrg (void)
135{
136        int clock_divisor = CFG_NS16550_CLK / 16 / gd->baudrate;
137
138#ifdef CFG_INIT_CHAN1
139        NS16550_reinit(COM_PORTS[0], clock_divisor);
140#endif
141#ifdef CFG_INIT_CHAN2
142        NS16550_reinit(COM_PORTS[1], clock_divisor);
143#endif
144}
145
146#endif /* CONFIG_MPSC */
147
148void
149serial_puts (const char *s)
150{
151        while (*s) {
152                serial_putc (*s++);
153        }
154}
155
156#if defined(CONFIG_CMD_KGDB)
157void
158kgdb_serial_init(void)
159{
160}
161
162void
163putDebugChar (int c)
164{
165        serial_putc (c);
166}
167
168void
169putDebugStr (const char *str)
170{
171        serial_puts (str);
172}
173
174int
175getDebugChar (void)
176{
177        return serial_getc();
178}
179
180void
181kgdb_interruptible (int yes)
182{
183        return;
184}
185#endif
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