]> git.ipfire.org Git - people/ms/u-boot.git/blob - common/main.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
* Get (mostly) rid of CFG_MONITOR_LEN definition; compute real length
[people/ms/u-boot.git] / common / main.c
1 /*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24 /* #define DEBUG */
25
26 #include <common.h>
27 #include <watchdog.h>
28 #include <command.h>
29 #include <cmd_nvedit.h>
30 #include <cmd_bootm.h>
31 #include <malloc.h>
32 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
33 #include <cmd_boot.h> /* for do_reset() prototype */
34 #endif
35
36 #ifdef CFG_HUSH_PARSER
37 #include <hush.h>
38 #endif
39
40 #define MAX_DELAY_STOP_STR 32
41
42 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
43 static int parse_line (char *, char *[]);
44 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
45 static int abortboot(int);
46 #endif
47
48 #undef DEBUG_PARSER
49
50 char console_buffer[CFG_CBSIZE]; /* console I/O buffer */
51
52 static char erase_seq[] = "\b \b"; /* erase sequence */
53 static char tab_seq[] = " "; /* used to expand TABs */
54
55 #ifdef CONFIG_BOOT_RETRY_TIME
56 static uint64_t endtime = 0; /* must be set, default is instant timeout */
57 static int retry_time = -1; /* -1 so can call readline before main_loop */
58 #endif
59
60 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
61
62 #ifndef CONFIG_BOOT_RETRY_MIN
63 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
64 #endif
65
66 #ifdef CONFIG_MODEM_SUPPORT
67 int do_mdm_init = 0;
68 extern void mdm_init(void); /* defined in board.c */
69 #endif
70
71 /***************************************************************************
72 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
73 * returns: 0 - no key string, allow autoboot
74 * 1 - got key string, abort
75 */
76 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
77 # if defined(CONFIG_AUTOBOOT_KEYED)
78 static __inline__ int abortboot(int bootdelay)
79 {
80 int abort = 0;
81 uint64_t etime = endtick(bootdelay);
82 struct
83 {
84 char* str;
85 u_int len;
86 int retry;
87 }
88 delaykey [] =
89 {
90 { str: getenv ("bootdelaykey"), retry: 1 },
91 { str: getenv ("bootdelaykey2"), retry: 1 },
92 { str: getenv ("bootstopkey"), retry: 0 },
93 { str: getenv ("bootstopkey2"), retry: 0 },
94 };
95
96 char presskey [MAX_DELAY_STOP_STR];
97 u_int presskey_len = 0;
98 u_int presskey_max = 0;
99 u_int i;
100
101 # ifdef CONFIG_AUTOBOOT_PROMPT
102 printf (CONFIG_AUTOBOOT_PROMPT, bootdelay);
103 # endif
104
105 # ifdef CONFIG_AUTOBOOT_DELAY_STR
106 if (delaykey[0].str == NULL)
107 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
108 # endif
109 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
110 if (delaykey[1].str == NULL)
111 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
112 # endif
113 # ifdef CONFIG_AUTOBOOT_STOP_STR
114 if (delaykey[2].str == NULL)
115 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
116 # endif
117 # ifdef CONFIG_AUTOBOOT_STOP_STR2
118 if (delaykey[3].str == NULL)
119 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
120 # endif
121
122 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
123 delaykey[i].len = delaykey[i].str == NULL ?
124 0 : strlen (delaykey[i].str);
125 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
126 MAX_DELAY_STOP_STR : delaykey[i].len;
127
128 presskey_max = presskey_max > delaykey[i].len ?
129 presskey_max : delaykey[i].len;
130
131 # if DEBUG_BOOTKEYS
132 printf("%s key:<%s>\n",
133 delaykey[i].retry ? "delay" : "stop",
134 delaykey[i].str ? delaykey[i].str : "NULL");
135 # endif
136 }
137
138 /* In order to keep up with incoming data, check timeout only
139 * when catch up.
140 */
141 while (!abort && get_ticks() <= etime) {
142 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
143 if (delaykey[i].len > 0 &&
144 presskey_len >= delaykey[i].len &&
145 memcmp (presskey + presskey_len - delaykey[i].len,
146 delaykey[i].str,
147 delaykey[i].len) == 0) {
148 # if DEBUG_BOOTKEYS
149 printf("got %skey\n",
150 delaykey[i].retry ? "delay" : "stop");
151 # endif
152
153 # ifdef CONFIG_BOOT_RETRY_TIME
154 /* don't retry auto boot */
155 if (! delaykey[i].retry)
156 retry_time = -1;
157 # endif
158 abort = 1;
159 }
160 }
161
162 if (tstc()) {
163 if (presskey_len < presskey_max) {
164 presskey [presskey_len ++] = getc();
165 }
166 else {
167 for (i = 0; i < presskey_max - 1; i ++)
168 presskey [i] = presskey [i + 1];
169
170 presskey [i] = getc();
171 }
172 }
173 }
174 # if DEBUG_BOOTKEYS
175 if (!abort)
176 printf("key timeout\n");
177 # endif
178
179 return abort;
180 }
181
182 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
183
184 #ifdef CONFIG_MENUKEY
185 static int menukey = 0;
186 #endif
187
188 static __inline__ int abortboot(int bootdelay)
189 {
190 int abort = 0;
191
192 #ifdef CONFIG_MENUPROMPT
193 printf(CONFIG_MENUPROMPT, bootdelay);
194 #else
195 printf("Hit any key to stop autoboot: %2d ", bootdelay);
196 #endif
197
198 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
199 /*
200 * Check if key already pressed
201 * Don't check if bootdelay < 0
202 */
203 if (bootdelay >= 0) {
204 if (tstc()) { /* we got a key press */
205 (void) getc(); /* consume input */
206 printf ("\b\b\b 0\n");
207 return 1; /* don't auto boot */
208 }
209 }
210 #endif
211
212 while (bootdelay > 0) {
213 int i;
214
215 --bootdelay;
216 /* delay 100 * 10ms */
217 for (i=0; !abort && i<100; ++i) {
218 if (tstc()) { /* we got a key press */
219 abort = 1; /* don't auto boot */
220 bootdelay = 0; /* no more delay */
221 # ifdef CONFIG_MENUKEY
222 menukey = getc();
223 # else
224 (void) getc(); /* consume input */
225 # endif
226 break;
227 }
228 udelay (10000);
229 }
230
231 printf ("\b\b\b%2d ", bootdelay);
232 }
233
234 putc ('\n');
235
236 return abort;
237 }
238 # endif /* CONFIG_AUTOBOOT_KEYED */
239 #endif /* CONFIG_BOOTDELAY >= 0 */
240
241 /****************************************************************************/
242
243 void main_loop (void)
244 {
245 #ifndef CFG_HUSH_PARSER
246 static char lastcommand[CFG_CBSIZE] = { 0, };
247 int len;
248 int rc = 1;
249 int flag;
250 #endif
251
252 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
253 char *s;
254 int bootdelay;
255 #endif
256 #ifdef CONFIG_PREBOOT
257 char *p;
258 #endif
259
260 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
261 ulong bmp = 0; /* default bitmap */
262 extern int trab_vfd (ulong bitmap);
263
264 #ifdef CONFIG_MODEM_SUPPORT
265 if (do_mdm_init)
266 bmp = 1; /* alternate bitmap */
267 #endif
268 trab_vfd (bmp);
269 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
270
271 #ifdef CONFIG_MODEM_SUPPORT
272 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init);
273 if (do_mdm_init) {
274 uchar *str = strdup(getenv("mdm_cmd"));
275 setenv ("preboot", str); /* set or delete definition */
276 if (str != NULL)
277 free (str);
278 mdm_init(); /* wait for modem connection */
279 }
280 #endif /* CONFIG_MODEM_SUPPORT */
281
282 #ifdef CONFIG_VERSION_VARIABLE
283 {
284 extern char version_string[];
285 char *str = getenv("ver");
286
287 if (!str)
288 setenv ("ver", version_string); /* set version variable */
289 }
290 #endif /* CONFIG_VERSION_VARIABLE */
291
292 #ifdef CFG_HUSH_PARSER
293 u_boot_hush_start ();
294 #endif
295
296 #ifdef CONFIG_PREBOOT
297 if ((p = getenv ("preboot")) != NULL) {
298 # ifdef CONFIG_AUTOBOOT_KEYED
299 int prev = disable_ctrlc(1); /* disable Control C checking */
300 # endif
301
302 # ifndef CFG_HUSH_PARSER
303 run_command (p, 0);
304 # else
305 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
306 FLAG_EXIT_FROM_LOOP);
307 # endif
308
309 # ifdef CONFIG_AUTOBOOT_KEYED
310 disable_ctrlc(prev); /* restore Control C checking */
311 # endif
312 }
313 #endif /* CONFIG_PREBOOT */
314
315 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
316 s = getenv ("bootdelay");
317 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
318
319 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
320
321 # ifdef CONFIG_BOOT_RETRY_TIME
322 s = getenv ("bootretry");
323 if (s != NULL)
324 retry_time = (int)simple_strtoul(s, NULL, 10);
325 else
326 retry_time = CONFIG_BOOT_RETRY_TIME;
327 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
328 retry_time = CONFIG_BOOT_RETRY_MIN;
329 # endif /* CONFIG_BOOT_RETRY_TIME */
330
331 s = getenv ("bootcmd");
332
333 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
334
335 if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
336 # ifdef CONFIG_AUTOBOOT_KEYED
337 int prev = disable_ctrlc(1); /* disable Control C checking */
338 # endif
339
340 # ifndef CFG_HUSH_PARSER
341 run_command (s, 0);
342 # else
343 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
344 FLAG_EXIT_FROM_LOOP);
345 # endif
346
347 # ifdef CONFIG_AUTOBOOT_KEYED
348 disable_ctrlc(prev); /* restore Control C checking */
349 # endif
350 }
351
352 # ifdef CONFIG_MENUKEY
353 if (menukey == CONFIG_MENUKEY) {
354 s = getenv("menucmd");
355 if (s) {
356 # ifndef CFG_HUSH_PARSER
357 run_command (s, bd, 0);
358 # else
359 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
360 FLAG_EXIT_FROM_LOOP);
361 # endif
362 }
363 }
364 #endif /* CONFIG_MENUKEY */
365 #endif /* CONFIG_BOOTDELAY */
366
367 #ifdef CONFIG_AMIGAONEG3SE
368 {
369 extern void video_banner(void);
370 video_banner();
371 }
372 #endif
373
374 /*
375 * Main Loop for Monitor Command Processing
376 */
377 #ifdef CFG_HUSH_PARSER
378 parse_file_outer();
379 /* This point is never reached */
380 for (;;);
381 #else
382 for (;;) {
383 #ifdef CONFIG_BOOT_RETRY_TIME
384 if (rc >= 0) {
385 /* Saw enough of a valid command to
386 * restart the timeout.
387 */
388 reset_cmd_timeout();
389 }
390 #endif
391 len = readline (CFG_PROMPT);
392
393 flag = 0; /* assume no special flags for now */
394 if (len > 0)
395 strcpy (lastcommand, console_buffer);
396 else if (len == 0)
397 flag |= CMD_FLAG_REPEAT;
398 #ifdef CONFIG_BOOT_RETRY_TIME
399 else if (len == -2) {
400 /* -2 means timed out, retry autoboot
401 */
402 printf("\nTimed out waiting for command\n");
403 # ifdef CONFIG_RESET_TO_RETRY
404 /* Reinit board to run initialization code again */
405 do_reset (NULL, 0, 0, NULL);
406 # else
407 return; /* retry autoboot */
408 # endif
409 }
410 #endif
411
412 if (len == -1)
413 printf ("<INTERRUPT>\n");
414 else
415 rc = run_command (lastcommand, flag);
416
417 if (rc <= 0) {
418 /* invalid command or not repeatable, forget it */
419 lastcommand[0] = 0;
420 }
421 }
422 #endif /*CFG_HUSH_PARSER*/
423 }
424
425 /***************************************************************************
426 * reset command line timeout to retry_time seconds
427 */
428 #ifdef CONFIG_BOOT_RETRY_TIME
429 void reset_cmd_timeout(void)
430 {
431 endtime = endtick(retry_time);
432 }
433 #endif
434
435 /****************************************************************************/
436
437 /*
438 * Prompt for input and read a line.
439 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
440 * time out when time goes past endtime (timebase time in ticks).
441 * Return: number of read characters
442 * -1 if break
443 * -2 if timed out
444 */
445 int readline (const char *const prompt)
446 {
447 char *p = console_buffer;
448 int n = 0; /* buffer index */
449 int plen = 0; /* prompt length */
450 int col; /* output column cnt */
451 char c;
452
453 /* print prompt */
454 if (prompt) {
455 plen = strlen (prompt);
456 puts (prompt);
457 }
458 col = plen;
459
460 for (;;) {
461 #ifdef CONFIG_BOOT_RETRY_TIME
462 while (!tstc()) { /* while no incoming data */
463 if (retry_time >= 0 && get_ticks() > endtime)
464 return (-2); /* timed out */
465 }
466 #endif
467 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
468
469 #ifdef CONFIG_SHOW_ACTIVITY
470 while (!tstc()) {
471 extern void show_activity(int arg);
472 show_activity(0);
473 }
474 #endif
475 c = getc();
476
477 /*
478 * Special character handling
479 */
480 switch (c) {
481 case '\r': /* Enter */
482 case '\n':
483 *p = '\0';
484 puts ("\r\n");
485 return (p - console_buffer);
486
487 case 0x03: /* ^C - break */
488 console_buffer[0] = '\0'; /* discard input */
489 return (-1);
490
491 case 0x15: /* ^U - erase line */
492 while (col > plen) {
493 puts (erase_seq);
494 --col;
495 }
496 p = console_buffer;
497 n = 0;
498 continue;
499
500 case 0x17: /* ^W - erase word */
501 p=delete_char(console_buffer, p, &col, &n, plen);
502 while ((n > 0) && (*p != ' ')) {
503 p=delete_char(console_buffer, p, &col, &n, plen);
504 }
505 continue;
506
507 case 0x08: /* ^H - backspace */
508 case 0x7F: /* DEL - backspace */
509 p=delete_char(console_buffer, p, &col, &n, plen);
510 continue;
511
512 default:
513 /*
514 * Must be a normal character then
515 */
516 if (n < CFG_CBSIZE-2) {
517 if (c == '\t') { /* expand TABs */
518 puts (tab_seq+(col&07));
519 col += 8 - (col&07);
520 } else {
521 ++col; /* echo input */
522 putc (c);
523 }
524 *p++ = c;
525 ++n;
526 } else { /* Buffer full */
527 putc ('\a');
528 }
529 }
530 }
531 }
532
533 /****************************************************************************/
534
535 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
536 {
537 char *s;
538
539 if (*np == 0) {
540 return (p);
541 }
542
543 if (*(--p) == '\t') { /* will retype the whole line */
544 while (*colp > plen) {
545 puts (erase_seq);
546 (*colp)--;
547 }
548 for (s=buffer; s<p; ++s) {
549 if (*s == '\t') {
550 puts (tab_seq+((*colp) & 07));
551 *colp += 8 - ((*colp) & 07);
552 } else {
553 ++(*colp);
554 putc (*s);
555 }
556 }
557 } else {
558 puts (erase_seq);
559 (*colp)--;
560 }
561 (*np)--;
562 return (p);
563 }
564
565 /****************************************************************************/
566
567 int parse_line (char *line, char *argv[])
568 {
569 int nargs = 0;
570
571 #ifdef DEBUG_PARSER
572 printf ("parse_line: \"%s\"\n", line);
573 #endif
574 while (nargs < CFG_MAXARGS) {
575
576 /* skip any white space */
577 while ((*line == ' ') || (*line == '\t')) {
578 ++line;
579 }
580
581 if (*line == '\0') { /* end of line, no more args */
582 argv[nargs] = NULL;
583 #ifdef DEBUG_PARSER
584 printf ("parse_line: nargs=%d\n", nargs);
585 #endif
586 return (nargs);
587 }
588
589 argv[nargs++] = line; /* begin of argument string */
590
591 /* find end of string */
592 while (*line && (*line != ' ') && (*line != '\t')) {
593 ++line;
594 }
595
596 if (*line == '\0') { /* end of line, no more args */
597 argv[nargs] = NULL;
598 #ifdef DEBUG_PARSER
599 printf ("parse_line: nargs=%d\n", nargs);
600 #endif
601 return (nargs);
602 }
603
604 *line++ = '\0'; /* terminate current arg */
605 }
606
607 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS);
608
609 #ifdef DEBUG_PARSER
610 printf ("parse_line: nargs=%d\n", nargs);
611 #endif
612 return (nargs);
613 }
614
615 /****************************************************************************/
616
617 static void process_macros (const char *input, char *output)
618 {
619 char c, prev;
620 const char *varname_start = NULL;
621 int inputcnt = strlen (input);
622 int outputcnt = CFG_CBSIZE;
623 int state = 0; /* 0 = waiting for '$' */
624 /* 1 = waiting for '(' */
625 /* 2 = waiting for ')' */
626 /* 3 = waiting for ''' */
627 #ifdef DEBUG_PARSER
628 char *output_start = output;
629
630 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input);
631 #endif
632
633 prev = '\0'; /* previous character */
634
635 while (inputcnt && outputcnt) {
636 c = *input++;
637 inputcnt--;
638
639 if (state!=3) {
640 /* remove one level of escape characters */
641 if ((c == '\\') && (prev != '\\')) {
642 if (inputcnt-- == 0)
643 break;
644 prev = c;
645 c = *input++;
646 }
647 }
648
649 switch (state) {
650 case 0: /* Waiting for (unescaped) $ */
651 if ((c == '\'') && (prev != '\\')) {
652 state = 3;
653 break;
654 }
655 if ((c == '$') && (prev != '\\')) {
656 state++;
657 } else {
658 *(output++) = c;
659 outputcnt--;
660 }
661 break;
662 case 1: /* Waiting for ( */
663 if (c == '(') {
664 state++;
665 varname_start = input;
666 } else {
667 state = 0;
668 *(output++) = '$';
669 outputcnt--;
670
671 if (outputcnt) {
672 *(output++) = c;
673 outputcnt--;
674 }
675 }
676 break;
677 case 2: /* Waiting for ) */
678 if (c == ')') {
679 int i;
680 char envname[CFG_CBSIZE], *envval;
681 int envcnt = input-varname_start-1; /* Varname # of chars */
682
683 /* Get the varname */
684 for (i = 0; i < envcnt; i++) {
685 envname[i] = varname_start[i];
686 }
687 envname[i] = 0;
688
689 /* Get its value */
690 envval = getenv (envname);
691
692 /* Copy into the line if it exists */
693 if (envval != NULL)
694 while ((*envval) && outputcnt) {
695 *(output++) = *(envval++);
696 outputcnt--;
697 }
698 /* Look for another '$' */
699 state = 0;
700 }
701 break;
702 case 3: /* Waiting for ' */
703 if ((c == '\'') && (prev != '\\')) {
704 state = 0;
705 } else {
706 *(output++) = c;
707 outputcnt--;
708 }
709 break;
710 }
711 prev = c;
712 }
713
714 if (outputcnt)
715 *output = 0;
716
717 #ifdef DEBUG_PARSER
718 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
719 strlen(output_start), output_start);
720 #endif
721 }
722
723 /****************************************************************************
724 * returns:
725 * 1 - command executed, repeatable
726 * 0 - command executed but not repeatable, interrupted commands are
727 * always considered not repeatable
728 * -1 - not executed (unrecognized, bootd recursion or too many args)
729 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
730 * considered unrecognized)
731 *
732 * WARNING:
733 *
734 * We must create a temporary copy of the command since the command we get
735 * may be the result from getenv(), which returns a pointer directly to
736 * the environment data, which may change magicly when the command we run
737 * creates or modifies environment variables (like "bootp" does).
738 */
739
740 int run_command (const char *cmd, int flag)
741 {
742 cmd_tbl_t *cmdtp;
743 char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */
744 char *token; /* start of token in cmdbuf */
745 char *sep; /* end of token (separator) in cmdbuf */
746 char finaltoken[CFG_CBSIZE];
747 char *str = cmdbuf;
748 char *argv[CFG_MAXARGS + 1]; /* NULL terminated */
749 int argc, inquotes;
750 int repeatable = 1;
751 int rc = 0;
752
753 #ifdef DEBUG_PARSER
754 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
755 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
756 puts ("\"\n");
757 #endif
758
759 clear_ctrlc(); /* forget any previous Control C */
760
761 if (!cmd || !*cmd) {
762 return -1; /* empty command */
763 }
764
765 if (strlen(cmd) >= CFG_CBSIZE) {
766 puts ("## Command too long!\n");
767 return -1;
768 }
769
770 strcpy (cmdbuf, cmd);
771
772 /* Process separators and check for invalid
773 * repeatable commands
774 */
775
776 #ifdef DEBUG_PARSER
777 printf ("[PROCESS_SEPARATORS] %s\n", cmd);
778 #endif
779 while (*str) {
780
781 /*
782 * Find separator, or string end
783 * Allow simple escape of ';' by writing "\;"
784 */
785 for (inquotes = 0, sep = str; *sep; sep++) {
786 if ((*sep=='\'') &&
787 (*(sep-1) != '\\'))
788 inquotes=!inquotes;
789
790 if (!inquotes &&
791 (*sep == ';') && /* separator */
792 ( sep != str) && /* past string start */
793 (*(sep-1) != '\\')) /* and NOT escaped */
794 break;
795 }
796
797 /*
798 * Limit the token to data between separators
799 */
800 token = str;
801 if (*sep) {
802 str = sep + 1; /* start of command for next pass */
803 *sep = '\0';
804 }
805 else
806 str = sep; /* no more commands for next pass */
807 #ifdef DEBUG_PARSER
808 printf ("token: \"%s\"\n", token);
809 #endif
810
811 /* find macros in this token and replace them */
812 process_macros (token, finaltoken);
813
814 /* Extract arguments */
815 argc = parse_line (finaltoken, argv);
816
817 /* Look up command in command table */
818 if ((cmdtp = find_cmd(argv[0])) == NULL) {
819 printf ("Unknown command '%s' - try 'help'\n", argv[0]);
820 rc = -1; /* give up after bad command */
821 continue;
822 }
823
824 /* found - check max args */
825 if (argc > cmdtp->maxargs) {
826 printf ("Usage:\n%s\n", cmdtp->usage);
827 rc = -1;
828 continue;
829 }
830
831 #if (CONFIG_COMMANDS & CFG_CMD_BOOTD)
832 /* avoid "bootd" recursion */
833 if (cmdtp->cmd == do_bootd) {
834 #ifdef DEBUG_PARSER
835 printf ("[%s]\n", finaltoken);
836 #endif
837 if (flag & CMD_FLAG_BOOTD) {
838 printf ("'bootd' recursion detected\n");
839 rc = -1;
840 continue;
841 }
842 else
843 flag |= CMD_FLAG_BOOTD;
844 }
845 #endif /* CFG_CMD_BOOTD */
846
847 /* OK - call function to do the command */
848 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
849 rc = -1;
850 }
851
852 repeatable &= cmdtp->repeatable;
853
854 /* Did the user stop this? */
855 if (had_ctrlc ())
856 return 0; /* if stopped then not repeatable */
857 }
858
859 return rc ? rc : repeatable;
860 }
861
862 /****************************************************************************/
863
864 #if (CONFIG_COMMANDS & CFG_CMD_RUN)
865 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
866 {
867 int i;
868
869 if (argc < 2) {
870 printf ("Usage:\n%s\n", cmdtp->usage);
871 return 1;
872 }
873
874 for (i=1; i<argc; ++i) {
875 char *arg;
876
877 if ((arg = getenv (argv[i])) == NULL) {
878 printf ("## Error: \"%s\" not defined\n", argv[i]);
879 return 1;
880 }
881 #ifndef CFG_HUSH_PARSER
882 if (run_command (arg, flag) == -1)
883 return 1;
884 #else
885 if (parse_string_outer(arg,
886 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
887 return 1;
888 #endif
889 }
890 return 0;
891 }
892 #endif /* CFG_CMD_RUN */
"Das U-Boot" Source Tree