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
|
/*
* (C) Copyright 2008
* Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de.
*
* 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 <malloc.h>
#ifdef CONFIG_CONSOLE_MUX
void iomux_printdevs(const int console)
{
int i;
struct stdio_dev *dev;
for (i = 0; i < cd_count[console]; i++) {
dev = console_devices[console][i];
printf("%s ", dev->name);
}
printf("\n");
}
/* This tries to preserve the old list if an error occurs. */
int iomux_doenv(const int console, const char *arg)
{
char *console_args, *temp, **start;
int i, j, k, io_flag, cs_idx, repeat;
struct stdio_dev *dev;
struct stdio_dev **cons_set;
console_args = strdup(arg);
if (console_args == NULL)
return 1;
/*
* Check whether a comma separated list of devices was
* entered and count how many devices were entered.
* The array start[] has pointers to the beginning of
* each device name (up to MAX_CONSARGS devices).
*
* Have to do this twice - once to count the number of
* commas and then again to populate start.
*/
i = 0;
temp = console_args;
for (;;) {
temp = strchr(temp, ',');
if (temp != NULL) {
i++;
temp++;
continue;
}
/* There's always one entry more than the number of commas. */
i++;
break;
}
start = (char **)malloc(i * sizeof(char *));
if (start == NULL) {
free(console_args);
return 1;
}
i = 0;
start[0] = console_args;
for (;;) {
temp = strchr(start[i++], ',');
if (temp == NULL)
break;
*temp = '\0';
start[i] = temp + 1;
}
cons_set = (struct stdio_dev **)calloc(i, sizeof(struct stdio_dev *));
if (cons_set == NULL) {
free(start);
free(console_args);
return 1;
}
switch (console) {
case stdin:
io_flag = DEV_FLAGS_INPUT;
break;
case stdout:
case stderr:
io_flag = DEV_FLAGS_OUTPUT;
break;
default:
free(start);
free(console_args);
free(cons_set);
return 1;
}
cs_idx = 0;
for (j = 0; j < i; j++) {
/*
* Check whether the device exists and is valid.
* console_assign() also calls search_device(),
* but I need the pointer to the device.
*/
dev = search_device(io_flag, start[j]);
if (dev == NULL)
continue;
/*
* Prevent multiple entries for a device.
*/
repeat = 0;
for (k = 0; k < cs_idx; k++) {
if (dev == cons_set[k]) {
repeat++;
break;
}
}
if (repeat)
continue;
/*
* Try assigning the specified device.
* This could screw up the console settings for apps.
*/
if (console_assign(console, start[j]) < 0)
continue;
/*
* This was taken from common/cmd_nvedit.c.
* This will never work because serial_assign() returns
* 1 upon error, not -1.
* This would almost always return an error anyway because
* serial_assign() expects the name of a serial device, like
* serial_smc, but the user generally only wants to set serial.
*/
if (serial_assign(start[j]) < 0)
continue;
cons_set[cs_idx++] = dev;
}
free(console_args);
free(start);
/* failed to set any console */
if (cs_idx == 0) {
free(cons_set);
return 1;
} else {
/* Works even if console_devices[console] is NULL. */
console_devices[console] =
(struct stdio_dev **)realloc(console_devices[console],
cs_idx * sizeof(struct stdio_dev *));
if (console_devices[console] == NULL) {
free(cons_set);
return 1;
}
memcpy(console_devices[console], cons_set, cs_idx *
sizeof(struct stdio_dev *));
cd_count[console] = cs_idx;
}
free(cons_set);
return 0;
}
#endif /* CONFIG_CONSOLE_MUX */
|
