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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000
* Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
*/
#include <common.h>
#include <clock_legacy.h>
#include <ns16550.h>
#include <serial.h>
#include <linux/compiler.h>
#ifndef CONFIG_NS16550_MIN_FUNCTIONS
DECLARE_GLOBAL_DATA_PTR;
#if !defined(CONFIG_CONS_INDEX)
#elif (CONFIG_CONS_INDEX < 1) || (CONFIG_CONS_INDEX > 6)
#error "Invalid console index value."
#endif
#if CONFIG_CONS_INDEX == 1 && !defined(CONFIG_SYS_NS16550_COM1)
#error "Console port 1 defined but not configured."
#elif CONFIG_CONS_INDEX == 2 && !defined(CONFIG_SYS_NS16550_COM2)
#error "Console port 2 defined but not configured."
#elif CONFIG_CONS_INDEX == 3 && !defined(CONFIG_SYS_NS16550_COM3)
#error "Console port 3 defined but not configured."
#elif CONFIG_CONS_INDEX == 4 && !defined(CONFIG_SYS_NS16550_COM4)
#error "Console port 4 defined but not configured."
#elif CONFIG_CONS_INDEX == 5 && !defined(CONFIG_SYS_NS16550_COM5)
#error "Console port 5 defined but not configured."
#elif CONFIG_CONS_INDEX == 6 && !defined(CONFIG_SYS_NS16550_COM6)
#error "Console port 6 defined but not configured."
#endif
/* Note: The port number specified in the functions is 1 based.
* the array is 0 based.
*/
static struct ns16550 *serial_ports[6] = {
#ifdef CONFIG_SYS_NS16550_COM1
(struct ns16550 *)CONFIG_SYS_NS16550_COM1,
#else
NULL,
#endif
#ifdef CONFIG_SYS_NS16550_COM2
(struct ns16550 *)CONFIG_SYS_NS16550_COM2,
#else
NULL,
#endif
#ifdef CONFIG_SYS_NS16550_COM3
(struct ns16550 *)CONFIG_SYS_NS16550_COM3,
#else
NULL,
#endif
#ifdef CONFIG_SYS_NS16550_COM4
(struct ns16550 *)CONFIG_SYS_NS16550_COM4,
#else
NULL,
#endif
#ifdef CONFIG_SYS_NS16550_COM5
(struct ns16550 *)CONFIG_SYS_NS16550_COM5,
#else
NULL,
#endif
#ifdef CONFIG_SYS_NS16550_COM6
(struct ns16550 *)CONFIG_SYS_NS16550_COM6
#else
NULL
#endif
};
#define PORT serial_ports[port-1]
/* Multi serial device functions */
#define DECLARE_ESERIAL_FUNCTIONS(port) \
static int eserial##port##_init(void) \
{ \
int clock_divisor; \
clock_divisor = ns16550_calc_divisor(serial_ports[port-1], \
CONFIG_SYS_NS16550_CLK, gd->baudrate); \
ns16550_init(serial_ports[port - 1], clock_divisor); \
return 0 ; \
} \
static void eserial##port##_setbrg(void) \
{ \
serial_setbrg_dev(port); \
} \
static int eserial##port##_getc(void) \
{ \
return serial_getc_dev(port); \
} \
static int eserial##port##_tstc(void) \
{ \
return serial_tstc_dev(port); \
} \
static void eserial##port##_putc(const char c) \
{ \
serial_putc_dev(port, c); \
} \
static void eserial##port##_puts(const char *s) \
{ \
serial_puts_dev(port, s); \
}
/* Serial device descriptor */
#define INIT_ESERIAL_STRUCTURE(port, __name) { \
.name = __name, \
.start = eserial##port##_init, \
.stop = NULL, \
.setbrg = eserial##port##_setbrg, \
.getc = eserial##port##_getc, \
.tstc = eserial##port##_tstc, \
.putc = eserial##port##_putc, \
.puts = eserial##port##_puts, \
}
static void _serial_putc(const char c, const int port)
{
if (c == '\n')
ns16550_putc(PORT, '\r');
ns16550_putc(PORT, c);
}
static void _serial_puts(const char *s, const int port)
{
while (*s) {
_serial_putc(*s++, port);
}
}
static int _serial_getc(const int port)
{
return ns16550_getc(PORT);
}
static int _serial_tstc(const int port)
{
return ns16550_tstc(PORT);
}
static void _serial_setbrg(const int port)
{
int clock_divisor;
clock_divisor = ns16550_calc_divisor(PORT, CONFIG_SYS_NS16550_CLK,
gd->baudrate);
ns16550_reinit(PORT, clock_divisor);
}
static inline void
serial_putc_dev(unsigned int dev_index,const char c)
{
_serial_putc(c,dev_index);
}
static inline void
serial_puts_dev(unsigned int dev_index,const char *s)
{
_serial_puts(s,dev_index);
}
static inline int
serial_getc_dev(unsigned int dev_index)
{
return _serial_getc(dev_index);
}
static inline int
serial_tstc_dev(unsigned int dev_index)
{
return _serial_tstc(dev_index);
}
static inline void
serial_setbrg_dev(unsigned int dev_index)
{
_serial_setbrg(dev_index);
}
#if defined(CONFIG_SYS_NS16550_COM1)
DECLARE_ESERIAL_FUNCTIONS(1);
struct serial_device eserial1_device =
INIT_ESERIAL_STRUCTURE(1, "eserial0");
#endif
#if defined(CONFIG_SYS_NS16550_COM2)
DECLARE_ESERIAL_FUNCTIONS(2);
struct serial_device eserial2_device =
INIT_ESERIAL_STRUCTURE(2, "eserial1");
#endif
#if defined(CONFIG_SYS_NS16550_COM3)
DECLARE_ESERIAL_FUNCTIONS(3);
struct serial_device eserial3_device =
INIT_ESERIAL_STRUCTURE(3, "eserial2");
#endif
#if defined(CONFIG_SYS_NS16550_COM4)
DECLARE_ESERIAL_FUNCTIONS(4);
struct serial_device eserial4_device =
INIT_ESERIAL_STRUCTURE(4, "eserial3");
#endif
#if defined(CONFIG_SYS_NS16550_COM5)
DECLARE_ESERIAL_FUNCTIONS(5);
struct serial_device eserial5_device =
INIT_ESERIAL_STRUCTURE(5, "eserial4");
#endif
#if defined(CONFIG_SYS_NS16550_COM6)
DECLARE_ESERIAL_FUNCTIONS(6);
struct serial_device eserial6_device =
INIT_ESERIAL_STRUCTURE(6, "eserial5");
#endif
__weak struct serial_device *default_serial_console(void)
{
#if CONFIG_CONS_INDEX == 1
return &eserial1_device;
#elif CONFIG_CONS_INDEX == 2
return &eserial2_device;
#elif CONFIG_CONS_INDEX == 3
return &eserial3_device;
#elif CONFIG_CONS_INDEX == 4
return &eserial4_device;
#elif CONFIG_CONS_INDEX == 5
return &eserial5_device;
#elif CONFIG_CONS_INDEX == 6
return &eserial6_device;
#else
#error "Bad CONFIG_CONS_INDEX."
#endif
}
void ns16550_serial_initialize(void)
{
#if defined(CONFIG_SYS_NS16550_COM1)
serial_register(&eserial1_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM2)
serial_register(&eserial2_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM3)
serial_register(&eserial3_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM4)
serial_register(&eserial4_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM5)
serial_register(&eserial5_device);
#endif
#if defined(CONFIG_SYS_NS16550_COM6)
serial_register(&eserial6_device);
#endif
}
#endif /* !CONFIG_NS16550_MIN_FUNCTIONS */
|
