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
32 * Use puts() instead of printf() to avoid printf buffer overflow
33 * for long help messages
36 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
37 flag, int argc, char * const argv[])
42 if (argc == 1) { /*show list of commands */
43 cmd_tbl_t *cmd_array[cmd_items];
46 /* Make array of commands from .uboot_cmd section */
48 for (i = 0; i < cmd_items; i++) {
49 cmd_array[i] = cmdtp++;
52 /* Sort command list (trivial bubble sort) */
53 for (i = cmd_items - 1; i > 0; --i) {
55 for (j = 0; j < i; ++j) {
56 if (strcmp (cmd_array[j]->name,
57 cmd_array[j + 1]->name) > 0) {
60 cmd_array[j] = cmd_array[j + 1];
61 cmd_array[j + 1] = tmp;
69 /* print short help (usage) */
70 for (i = 0; i < cmd_items; i++) {
71 const char *usage = cmd_array[i]->usage;
73 /* allow user abort */
78 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH,
79 cmd_array[i]->name, usage);
84 * command help (long version)
86 for (i = 1; i < argc; ++i) {
87 if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) {
88 rcode |= cmd_usage(cmdtp);
90 printf ("Unknown command '%s' - try 'help'"
91 " without arguments for list of all"
92 " known commands\n\n", argv[i]
100 /***************************************************************************
101 * find command table entry for a command
103 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len)
106 cmd_tbl_t *cmdtp_temp = table; /*Init value */
114 * Some commands allow length modifiers (like "cp.b");
115 * compare command name only until first dot.
117 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd);
120 cmdtp != table + table_len;
122 if (strncmp (cmd, cmdtp->name, len) == 0) {
123 if (len == strlen (cmdtp->name))
124 return cmdtp; /* full match */
126 cmdtp_temp = cmdtp; /* abbreviated command ? */
130 if (n_found == 1) { /* exactly one match */
134 return NULL; /* not found or ambiguous command */
137 cmd_tbl_t *find_cmd (const char *cmd)
139 int len = &__u_boot_cmd_end - &__u_boot_cmd_start;
140 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len);
143 int cmd_usage(const cmd_tbl_t *cmdtp)
145 printf("%s - %s\n\n", cmdtp->name, cmdtp->usage);
147 #ifdef CONFIG_SYS_LONGHELP
148 printf("Usage:\n%s ", cmdtp->name);
151 puts ("- No additional help available.\n");
157 #endif /* CONFIG_SYS_LONGHELP */
161 #ifdef CONFIG_AUTO_COMPLETE
163 int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[])
165 static char tmp_buf[512];
168 space = last_char == '\0' || last_char == ' ' || last_char == '\t';
170 if (space && argc == 1)
171 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf);
173 if (!space && argc == 2)
174 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf);
179 /*************************************************************************************/
181 static int complete_cmdv(int argc, char * const argv[], char last_char, int maxv, char *cmdv[])
196 /* output full list of commands */
197 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
198 if (n_found >= maxv - 2) {
199 cmdv[n_found++] = "...";
202 cmdv[n_found++] = cmdtp->name;
204 cmdv[n_found] = NULL;
208 /* more than one arg or one but the start of the next */
209 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) {
210 cmdtp = find_cmd(argv[0]);
211 if (cmdtp == NULL || cmdtp->complete == NULL) {
215 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv);
220 * Some commands allow length modifiers (like "cp.b");
221 * compare command name only until first dot.
223 p = strchr(cmd, '.');
229 /* return the partial matches */
230 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
232 clen = strlen(cmdtp->name);
236 if (memcmp(cmd, cmdtp->name, len) != 0)
240 if (n_found >= maxv - 2) {
241 cmdv[n_found++] = "...";
245 cmdv[n_found++] = cmdtp->name;
248 cmdv[n_found] = NULL;
252 static int make_argv(char *s, int argvsz, char *argv[])
256 /* split into argv */
257 while (argc < argvsz - 1) {
259 /* skip any white space */
260 while ((*s == ' ') || (*s == '\t'))
263 if (*s == '\0') /* end of s, no more args */
266 argv[argc++] = s; /* begin of argument string */
268 /* find end of string */
269 while (*s && (*s != ' ') && (*s != '\t'))
272 if (*s == '\0') /* end of s, no more args */
275 *s++ = '\0'; /* terminate current arg */
282 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char * const argv[])
284 int ll = leader != NULL ? strlen(leader) : 0;
285 int sl = sep != NULL ? strlen(sep) : 0;
293 i = linemax; /* force leader and newline */
294 while (*argv != NULL) {
295 len = strlen(*argv) + sl;
296 if (i + len >= linemax) {
309 static int find_common_prefix(char * const argv[])
312 char *anchor, *s, *t;
319 len = strlen(anchor);
320 while ((t = *argv++) != NULL) {
322 for (i = 0; i < len; i++, t++, s++) {
331 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */
333 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp)
335 int n = *np, col = *colp;
336 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
340 int i, j, k, len, seplen, argc;
344 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0)
345 return 0; /* not in normal console */
349 last_char = buf[cnt - 1];
353 /* copy to secondary buffer which will be affected */
354 strcpy(tmp_buf, buf);
356 /* separate into argv */
357 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv);
359 /* do the completion and return the possible completions */
360 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv);
362 /* no match; bell and out */
364 if (argc > 1) /* allow tab for non command */
374 if (i == 1) { /* one match; perfect */
375 k = strlen(argv[argc - 1]);
380 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */
381 k = strlen(argv[argc - 1]);
391 /* make sure it fits */
392 if (n + k >= CONFIG_SYS_CBSIZE - 2) {
398 for (i = 0; i < len; i++)
401 for (i = 0; i < seplen; i++)
412 print_argv(NULL, " ", " ", 78, cmdv);
423 int cmd_get_data_size(char* arg, int default_size)
425 /* Check for a size specification .b, .w or .l.
427 int len = strlen(arg);
428 if (len > 2 && arg[len-2] == '.') {
446 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
447 DECLARE_GLOBAL_DATA_PTR;
449 void fixup_cmdtable(cmd_tbl_t *cmdtp, int size)
453 if (gd->reloc_off == 0)
456 for (i = 0; i < size; i++) {
459 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
461 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
462 cmdtp->name, (ulong) (cmdtp->cmd), addr);
465 (int (*)(struct cmd_tbl_s *, int, int, char * const []))addr;
466 addr = (ulong)(cmdtp->name) + gd->reloc_off;
467 cmdtp->name = (char *)addr;
469 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
470 cmdtp->usage = (char *)addr;
472 #ifdef CONFIG_SYS_LONGHELP
474 addr = (ulong)(cmdtp->help) + gd->reloc_off;
475 cmdtp->help = (char *)addr;