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
|
/*
* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@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
*/
/*
* Command Processor Table
*/
#include <common.h>
#include <command.h>
int
do_version (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
extern char version_string[];
printf ("\n%s\n", version_string);
return 0;
}
int
do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int i, putnl = 1;
for (i = 1; i < argc; i++) {
char *p = argv[i], c;
if (i > 1)
putc(' ');
while ((c = *p++) != '\0') {
if (c == '\\' && *p == 'c') {
putnl = 0;
p++;
} else {
putc(c);
}
}
}
if (putnl)
putc('\n');
return 0;
}
/*
* Use puts() instead of printf() to avoid printf buffer overflow
* for long help messages
*/
int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int i;
int rcode = 0;
if (argc == 1) { /*show list of commands */
int cmd_items = (((int) &__u_boot_cmd_end) -
((int) &__u_boot_cmd_start)) /
sizeof (*cmdtp);
int end_sort;
cmd_tbl_t *cmd_array[(cmd_items + 1)];
int i;
/* Make list of commands from .uboot_cmd section */
cmdtp = (cmd_tbl_t *) & __u_boot_cmd_start;
for (i = 1; i <= cmd_items; i++) {
cmd_array[i] = cmdtp;
cmdtp++;
}
/* Sort command list */
end_sort = 0;
for (i = 1; end_sort != 1 || i <= cmd_items - 1; i++) {
if (i == cmd_items) { /* Last command */
end_sort = 1;
i = 1;
}
if (strcmp (cmd_array[i]->name, cmd_array[i + 1]->name) > 0) {
end_sort = 0;
*cmd_array[0] = *cmd_array[i];
*cmd_array[i] = *cmd_array[i + 1];
*cmd_array[i + 1] = *cmd_array[0];
}
}
/* print short help (usage) */
for (cmdtp = (cmd_tbl_t *) & __u_boot_cmd_start;
cmdtp != (cmd_tbl_t *) & __u_boot_cmd_end; cmdtp++) {
/* allow user abort */
if (ctrlc ())
return 1;
if (cmdtp->usage == NULL)
continue;
puts (cmdtp->usage);
}
return 0;
}
/*
* command help (long version)
*/
for (i = 1; i < argc; ++i) {
if ((cmdtp = find_cmd (argv[i])) != NULL) {
#ifdef CFG_LONGHELP
/* found - print (long) help info */
puts (cmdtp->name);
putc (' ');
if (cmdtp->help) {
puts (cmdtp->help);
} else {
puts ("- No help available.\n");
rcode = 1;
}
putc ('\n');
#else /* no long help available */
if (cmdtp->usage)
puts (cmdtp->usage);
#endif /* CFG_LONGHELP */
} else {
printf ("Unknown command '%s' - try 'help'"
" without arguments for list of all"
" known commands\n\n", argv[i]
);
rcode = 1;
}
}
return rcode;
}
cmd_tbl_t U_BOOT_CMD(HELP) = MK_CMD_ENTRY(
"help", CFG_MAXARGS, 1, do_help,
"help - print online help\n",
"[command ...]\n"
" - show help information (for 'command')\n"
"'help' prints online help for the monitor commands.\n\n"
"Without arguments, it prints a short usage message for all commands.\n\n"
"To get detailed help information for specific commands you can type\n"
"'help' with one or more command names as arguments.\n"
);
cmd_tbl_t U_BOOT_CMD(QUES) = MK_CMD_ENTRY(
"?", CFG_MAXARGS, 1, do_help,
"? - alias for 'help'\n",
NULL
);
cmd_tbl_t U_BOOT_CMD(VERS) = MK_CMD_ENTRY(
"version", 1, 1, do_version,
"version - print monitor version\n",
NULL
);
cmd_tbl_t U_BOOT_CMD(ECHO) = MK_CMD_ENTRY(
"echo", CFG_MAXARGS, 1, do_echo,
"echo - echo args to console\n",
"[args..]\n"
" - echo args to console; \\c suppresses newline\n"
);
/***************************************************************************
* find command table entry for a command
*/
cmd_tbl_t *find_cmd (const char *cmd)
{
cmd_tbl_t *cmdtp;
cmd_tbl_t *cmdtp_temp = &__u_boot_cmd_start; /*Init value */
int one_cmd_name = 0;
for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
if ((strncmp (cmd, cmdtp->name, strlen (cmd)) == 0) &&
(strlen (cmd) == strlen (cmdtp->name)))
return cmdtp;
else if (strncmp (cmd, cmdtp->name, strlen (cmd)) == 0) {
cmdtp_temp = cmdtp;
one_cmd_name++;
} else;
}
if (one_cmd_name == 1)
return cmdtp_temp;
return NULL; /* not found || one_cmd_name >2 */
}
|
