summaryrefslogtreecommitdiffstats
path: root/board/evb64260/serial.c
blob: 9d711151f0cf455030b0b893fa9b477bcb8a1a10 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
/*
 * (C) Copyright 2001
 * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/*
 * serial.c - serial support for the gal ev board
 */

/* supports both the 16650 duart and the MPSC */

#include <common.h>
#include <command.h>
#include <galileo/memory.h>

#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
#include <ns16550.h>
#endif

#include "serial.h"

#include "mpsc.h"

DECLARE_GLOBAL_DATA_PTR;

#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
const NS16550_t COM_PORTS[] = { (NS16550_t) CONFIG_SYS_NS16550_COM1,
				(NS16550_t) CONFIG_SYS_NS16550_COM2 };
#endif

#ifdef CONFIG_MPSC

int serial_init (void)
{
#if (defined CONFIG_SYS_INIT_CHAN1) || (defined CONFIG_SYS_INIT_CHAN2)
	int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;
#endif

	mpsc_init(gd->baudrate);

	/* init the DUART chans so that KGDB in the kernel can use them */
#ifdef CONFIG_SYS_INIT_CHAN1
	NS16550_reinit(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
	NS16550_reinit(COM_PORTS[1], clock_divisor);
#endif
	return (0);
}

void
serial_putc(const char c)
{
	if (c == '\n')
		mpsc_putchar('\r');

	mpsc_putchar(c);
}

int
serial_getc(void)
{
	return mpsc_getchar();
}

int
serial_tstc(void)
{
	return mpsc_test_char();
}

void
serial_setbrg (void)
{
	galbrg_set_baudrate(CONFIG_MPSC_PORT, gd->baudrate);
}

#else /* ! CONFIG_MPSC */

int serial_init (void)
{
	int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;

#ifdef CONFIG_SYS_INIT_CHAN1
	(void)NS16550_init(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
	(void)NS16550_init(COM_PORTS[1], clock_divisor);
#endif

	return (0);
}

void
serial_putc(const char c)
{
	if (c == '\n')
		NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], '\r');

	NS16550_putc(COM_PORTS[CONFIG_SYS_DUART_CHAN], c);
}

int
serial_getc(void)
{
	return NS16550_getc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
}

int
serial_tstc(void)
{
	return NS16550_tstc(COM_PORTS[CONFIG_SYS_DUART_CHAN]);
}

void
serial_setbrg (void)
{
	int clock_divisor = CONFIG_SYS_NS16550_CLK / 16 / gd->baudrate;

#ifdef CONFIG_SYS_INIT_CHAN1
	NS16550_reinit(COM_PORTS[0], clock_divisor);
#endif
#ifdef CONFIG_SYS_INIT_CHAN2
	NS16550_reinit(COM_PORTS[1], clock_divisor);
#endif
}

#endif /* CONFIG_MPSC */

void
serial_puts (const char *s)
{
	while (*s) {
		serial_putc (*s++);
	}
}

#if defined(CONFIG_CMD_KGDB)
void
kgdb_serial_init(void)
{
}

void
putDebugChar (int c)
{
	serial_putc (c);
}

void
putDebugStr (const char *str)
{
	serial_puts (str);
}

int
getDebugChar (void)
{
	return serial_getc();
}

void
kgdb_interruptible (int yes)
{
	return;
}
#endif