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
|
/*
* (C) Copyright 2000
* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
*
* 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
*/
#include <common.h>
#include <serial.h>
#include <linux/compiler.h>
#include "ns16550.h"
DECLARE_GLOBAL_DATA_PTR;
#if CONFIG_CONS_INDEX == 1
static struct NS16550 *console =
(struct NS16550 *) (CONFIG_SYS_EUMB_ADDR + 0x4500);
#elif CONFIG_CONS_INDEX == 2
static struct NS16550 *console =
(struct NS16550 *) (CONFIG_SYS_EUMB_ADDR + 0x4500);
#else
#error no valid console defined
#endif
extern ulong get_bus_freq (ulong);
static int bmw_serial_init(void)
{
int clock_divisor = gd->bus_clk / 16 / gd->baudrate;
NS16550_init (CONFIG_CONS_INDEX - 1, clock_divisor);
return (0);
}
static void bmw_serial_putc(const char c)
{
if (c == '\n') {
serial_putc ('\r');
}
NS16550_putc (console, c);
}
static void bmw_serial_puts(const char *s)
{
while (*s) {
serial_putc (*s++);
}
}
static int bmw_serial_getc(void)
{
return NS16550_getc (console);
}
static int bmw_serial_tstc(void)
{
return NS16550_tstc (console);
}
static void bmw_serial_setbrg(void)
{
int clock_divisor = get_bus_freq (0) / 16 / gd->baudrate;
NS16550_reinit (console, clock_divisor);
}
#ifdef CONFIG_SERIAL_MULTI
static struct serial_device bmw_serial_drv = {
.name = "bmw_serial",
.start = bmw_serial_init,
.stop = NULL,
.setbrg = bmw_serial_setbrg,
.putc = bmw_serial_putc,
.puts = bmw_serial_puts,
.getc = bmw_serial_getc,
.tstc = bmw_serial_tstc,
};
void bmw_serial_initialize(void)
{
serial_register(&bmw_serial_drv);
}
__weak struct serial_device *default_serial_console(void)
{
return &bmw_serial_drv;
}
#else
int serial_init(void)
{
return bmw_serial_init();
}
void serial_setbrg(void)
{
bmw_serial_setbrg();
}
void serial_putc(const char c)
{
bmw_serial_putc(c);
}
void serial_puts(const char *s)
{
bmw_serial_puts(s);
}
int serial_getc(void)
{
return bmw_serial_getc();
}
int serial_tstc(void)
{
return bmw_serial_tstc();
}
#endif
|
