2 * (C) Copyright 2000-2009
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * Command Processor Table
30 #include <linux/ctype.h>
33 * Use puts() instead of printf() to avoid printf buffer overflow
34 * for long help messages
37 int _do_help (cmd_tbl_t
*cmd_start
, int cmd_items
, cmd_tbl_t
* cmdtp
, int
38 flag
, int argc
, char * const argv
[])
43 if (argc
== 1) { /*show list of commands */
44 cmd_tbl_t
*cmd_array
[cmd_items
];
47 /* Make array of commands from .uboot_cmd section */
49 for (i
= 0; i
< cmd_items
; i
++) {
50 cmd_array
[i
] = cmdtp
++;
53 /* Sort command list (trivial bubble sort) */
54 for (i
= cmd_items
- 1; i
> 0; --i
) {
56 for (j
= 0; j
< i
; ++j
) {
57 if (strcmp (cmd_array
[j
]->name
,
58 cmd_array
[j
+ 1]->name
) > 0) {
61 cmd_array
[j
] = cmd_array
[j
+ 1];
62 cmd_array
[j
+ 1] = tmp
;
70 /* print short help (usage) */
71 for (i
= 0; i
< cmd_items
; i
++) {
72 const char *usage
= cmd_array
[i
]->usage
;
74 /* allow user abort */
79 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH
,
80 cmd_array
[i
]->name
, usage
);
85 * command help (long version)
87 for (i
= 1; i
< argc
; ++i
) {
88 if ((cmdtp
= find_cmd_tbl (argv
[i
], cmd_start
, cmd_items
)) != NULL
) {
89 rcode
|= cmd_usage(cmdtp
);
91 printf ("Unknown command '%s' - try 'help'"
92 " without arguments for list of all"
93 " known commands\n\n", argv
[i
]
101 /***************************************************************************
102 * find command table entry for a command
104 cmd_tbl_t
*find_cmd_tbl (const char *cmd
, cmd_tbl_t
*table
, int table_len
)
107 cmd_tbl_t
*cmdtp_temp
= table
; /*Init value */
115 * Some commands allow length modifiers (like "cp.b");
116 * compare command name only until first dot.
118 len
= ((p
= strchr(cmd
, '.')) == NULL
) ? strlen (cmd
) : (p
- cmd
);
121 cmdtp
!= table
+ table_len
;
123 if (strncmp (cmd
, cmdtp
->name
, len
) == 0) {
124 if (len
== strlen (cmdtp
->name
))
125 return cmdtp
; /* full match */
127 cmdtp_temp
= cmdtp
; /* abbreviated command ? */
131 if (n_found
== 1) { /* exactly one match */
135 return NULL
; /* not found or ambiguous command */
138 cmd_tbl_t
*find_cmd (const char *cmd
)
140 int len
= &__u_boot_cmd_end
- &__u_boot_cmd_start
;
141 return find_cmd_tbl(cmd
, &__u_boot_cmd_start
, len
);
144 int cmd_usage(const cmd_tbl_t
*cmdtp
)
146 printf("%s - %s\n\n", cmdtp
->name
, cmdtp
->usage
);
148 #ifdef CONFIG_SYS_LONGHELP
149 printf("Usage:\n%s ", cmdtp
->name
);
152 puts ("- No additional help available.\n");
158 #endif /* CONFIG_SYS_LONGHELP */
162 #ifdef CONFIG_AUTO_COMPLETE
164 int var_complete(int argc
, char * const argv
[], char last_char
, int maxv
, char *cmdv
[])
166 static char tmp_buf
[512];
169 space
= last_char
== '\0' || isblank(last_char
);
171 if (space
&& argc
== 1)
172 return env_complete("", maxv
, cmdv
, sizeof(tmp_buf
), tmp_buf
);
174 if (!space
&& argc
== 2)
175 return env_complete(argv
[1], maxv
, cmdv
, sizeof(tmp_buf
), tmp_buf
);
180 /*************************************************************************************/
182 static int complete_cmdv(int argc
, char * const argv
[], char last_char
, int maxv
, char *cmdv
[])
197 /* output full list of commands */
198 for (cmdtp
= &__u_boot_cmd_start
; cmdtp
!= &__u_boot_cmd_end
; cmdtp
++) {
199 if (n_found
>= maxv
- 2) {
200 cmdv
[n_found
++] = "...";
203 cmdv
[n_found
++] = cmdtp
->name
;
205 cmdv
[n_found
] = NULL
;
209 /* more than one arg or one but the start of the next */
210 if (argc
> 1 || (last_char
== '\0' || isblank(last_char
))) {
211 cmdtp
= find_cmd(argv
[0]);
212 if (cmdtp
== NULL
|| cmdtp
->complete
== NULL
) {
216 return (*cmdtp
->complete
)(argc
, argv
, last_char
, maxv
, cmdv
);
221 * Some commands allow length modifiers (like "cp.b");
222 * compare command name only until first dot.
224 p
= strchr(cmd
, '.');
230 /* return the partial matches */
231 for (cmdtp
= &__u_boot_cmd_start
; cmdtp
!= &__u_boot_cmd_end
; cmdtp
++) {
233 clen
= strlen(cmdtp
->name
);
237 if (memcmp(cmd
, cmdtp
->name
, len
) != 0)
241 if (n_found
>= maxv
- 2) {
242 cmdv
[n_found
++] = "...";
246 cmdv
[n_found
++] = cmdtp
->name
;
249 cmdv
[n_found
] = NULL
;
253 static int make_argv(char *s
, int argvsz
, char *argv
[])
257 /* split into argv */
258 while (argc
< argvsz
- 1) {
260 /* skip any white space */
264 if (*s
== '\0') /* end of s, no more args */
267 argv
[argc
++] = s
; /* begin of argument string */
269 /* find end of string */
270 while (*s
&& !isblank(*s
))
273 if (*s
== '\0') /* end of s, no more args */
276 *s
++ = '\0'; /* terminate current arg */
283 static void print_argv(const char *banner
, const char *leader
, const char *sep
, int linemax
, char * const argv
[])
285 int ll
= leader
!= NULL
? strlen(leader
) : 0;
286 int sl
= sep
!= NULL
? strlen(sep
) : 0;
294 i
= linemax
; /* force leader and newline */
295 while (*argv
!= NULL
) {
296 len
= strlen(*argv
) + sl
;
297 if (i
+ len
>= linemax
) {
310 static int find_common_prefix(char * const argv
[])
313 char *anchor
, *s
, *t
;
320 len
= strlen(anchor
);
321 while ((t
= *argv
++) != NULL
) {
323 for (i
= 0; i
< len
; i
++, t
++, s
++) {
332 static char tmp_buf
[CONFIG_SYS_CBSIZE
]; /* copy of console I/O buffer */
334 int cmd_auto_complete(const char *const prompt
, char *buf
, int *np
, int *colp
)
336 int n
= *np
, col
= *colp
;
337 char *argv
[CONFIG_SYS_MAXARGS
+ 1]; /* NULL terminated */
341 int i
, j
, k
, len
, seplen
, argc
;
345 if (strcmp(prompt
, CONFIG_SYS_PROMPT
) != 0)
346 return 0; /* not in normal console */
350 last_char
= buf
[cnt
- 1];
354 /* copy to secondary buffer which will be affected */
355 strcpy(tmp_buf
, buf
);
357 /* separate into argv */
358 argc
= make_argv(tmp_buf
, sizeof(argv
)/sizeof(argv
[0]), argv
);
360 /* do the completion and return the possible completions */
361 i
= complete_cmdv(argc
, argv
, last_char
, sizeof(cmdv
)/sizeof(cmdv
[0]), cmdv
);
363 /* no match; bell and out */
365 if (argc
> 1) /* allow tab for non command */
375 if (i
== 1) { /* one match; perfect */
376 k
= strlen(argv
[argc
- 1]);
381 } else if (i
> 1 && (j
= find_common_prefix(cmdv
)) != 0) { /* more */
382 k
= strlen(argv
[argc
- 1]);
392 /* make sure it fits */
393 if (n
+ k
>= CONFIG_SYS_CBSIZE
- 2) {
399 for (i
= 0; i
< len
; i
++)
402 for (i
= 0; i
< seplen
; i
++)
413 print_argv(NULL
, " ", " ", 78, cmdv
);
424 int cmd_get_data_size(char* arg
, int default_size
)
426 /* Check for a size specification .b, .w or .l.
428 int len
= strlen(arg
);
429 if (len
> 2 && arg
[len
-2] == '.') {
447 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
448 DECLARE_GLOBAL_DATA_PTR
;
450 void fixup_cmdtable(cmd_tbl_t
*cmdtp
, int size
)
454 if (gd
->reloc_off
== 0)
457 for (i
= 0; i
< size
; i
++) {
460 addr
= (ulong
) (cmdtp
->cmd
) + gd
->reloc_off
;
462 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
463 cmdtp
->name
, (ulong
) (cmdtp
->cmd
), addr
);
466 (int (*)(struct cmd_tbl_s
*, int, int, char * const []))addr
;
467 addr
= (ulong
)(cmdtp
->name
) + gd
->reloc_off
;
468 cmdtp
->name
= (char *)addr
;
470 addr
= (ulong
)(cmdtp
->usage
) + gd
->reloc_off
;
471 cmdtp
->usage
= (char *)addr
;
473 #ifdef CONFIG_SYS_LONGHELP
475 addr
= (ulong
)(cmdtp
->help
) + gd
->reloc_off
;
476 cmdtp
->help
= (char *)addr
;
479 #ifdef CONFIG_AUTO_COMPLETE
480 if (cmdtp
->complete
) {
481 addr
= (ulong
)(cmdtp
->complete
) + gd
->reloc_off
;
483 (int (*)(int, char * const [], char, int, char * []))addr
;