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