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 #ifdef CONFIG_MENUKEY 183 static int menukey = 0; 184 #endif 185 186 static __inline__ int abortboot(int bootdelay) 187 { 188 int abort = 0; 189 190 #ifdef CONFIG_MENUPROMPT 191 printf(CONFIG_MENUPROMPT, bootdelay); 192 #else 193 printf("Hit any key to stop autoboot: %2d ", bootdelay); 194 #endif 195 196 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 197 /* 198 * Check if key already pressed 199 * Don't check if bootdelay < 0 200 */ 201 if (bootdelay >= 0) { 202 if (tstc()) { /* we got a key press */ 203 (void) getc(); /* consume input */ 204 printf ("\b\b\b 0\n"); 205 return 1; /* don't auto boot */ 206 } 207 } 208 #endif 209 210 while (bootdelay > 0) { 211 int i; 212 213 --bootdelay; 214 /* delay 100 * 10ms */ 215 for (i=0; !abort && i<100; ++i) { 216 if (tstc()) { /* we got a key press */ 217 abort = 1; /* don't auto boot */ 218 bootdelay = 0; /* no more delay */ 219 # ifdef CONFIG_MENUKEY 220 menukey = getc(); 221 # else 222 (void) getc(); /* consume input */ 223 # endif 224 break; 225 } 226 udelay (10000); 227 } 228 229 printf ("\b\b\b%2d ", bootdelay); 230 } 231 232 putc ('\n'); 233 234 return abort; 235 } 236 # endif /* CONFIG_AUTOBOOT_KEYED */ 237 #endif /* CONFIG_BOOTDELAY >= 0 */ 238 239 /****************************************************************************/ 240 241 void main_loop (void) 242 { 243 #ifndef CFG_HUSH_PARSER 244 static char lastcommand[CFG_CBSIZE] = { 0, }; 245 int len; 246 int rc = 1; 247 int flag; 248 #endif 249 250 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 251 char *s; 252 int bootdelay; 253 #endif 254 #ifdef CONFIG_PREBOOT 255 char *p; 256 #endif 257 258 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO) 259 ulong bmp = 0; /* default bitmap */ 260 extern int trab_vfd (ulong bitmap); 261 262 #ifdef CONFIG_MODEM_SUPPORT 263 if (do_mdm_init) 264 bmp = 1; /* alternate bitmap */ 265 #endif 266 trab_vfd (bmp); 267 #endif /* CONFIG_VFD && VFD_TEST_LOGO */ 268 269 #ifdef CONFIG_MODEM_SUPPORT 270 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 271 if (do_mdm_init) { 272 uchar *str = strdup(getenv("mdm_cmd")); 273 setenv ("preboot", str); /* set or delete definition */ 274 if (str != NULL) 275 free (str); 276 mdm_init(); /* wait for modem connection */ 277 } 278 #endif /* CONFIG_MODEM_SUPPORT */ 279 280 #ifdef CFG_HUSH_PARSER 281 u_boot_hush_start (); 282 #endif 283 284 #ifdef CONFIG_PREBOOT 285 if ((p = getenv ("preboot")) != NULL) { 286 # ifdef CONFIG_AUTOBOOT_KEYED 287 int prev = disable_ctrlc(1); /* disable Control C checking */ 288 # endif 289 290 # ifndef CFG_HUSH_PARSER 291 run_command (p, 0); 292 # else 293 parse_string_outer(p, FLAG_PARSE_SEMICOLON | 294 FLAG_EXIT_FROM_LOOP); 295 # endif 296 297 # ifdef CONFIG_AUTOBOOT_KEYED 298 disable_ctrlc(prev); /* restore Control C checking */ 299 # endif 300 } 301 #endif /* CONFIG_PREBOOT */ 302 303 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 304 s = getenv ("bootdelay"); 305 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 306 307 #if 0 308 printf ("### main_loop entered:\n\n"); 309 #endif 310 311 # ifdef CONFIG_BOOT_RETRY_TIME 312 s = getenv ("bootretry"); 313 if (s != NULL) 314 retry_time = (int)simple_strtoul(s, NULL, 10); 315 else 316 retry_time = CONFIG_BOOT_RETRY_TIME; 317 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 318 retry_time = CONFIG_BOOT_RETRY_MIN; 319 # endif /* CONFIG_BOOT_RETRY_TIME */ 320 321 s = getenv ("bootcmd"); 322 if (bootdelay >= 0 && s && !abortboot (bootdelay)) { 323 # ifdef CONFIG_AUTOBOOT_KEYED 324 int prev = disable_ctrlc(1); /* disable Control C checking */ 325 # endif 326 327 # ifndef CFG_HUSH_PARSER 328 run_command (s, 0); 329 # else 330 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 331 FLAG_EXIT_FROM_LOOP); 332 # endif 333 334 # ifdef CONFIG_AUTOBOOT_KEYED 335 disable_ctrlc(prev); /* restore Control C checking */ 336 # endif 337 } 338 339 # ifdef CONFIG_MENUKEY 340 if (menukey == CONFIG_MENUKEY) 341 { 342 s = getenv("menucmd"); 343 if (s) 344 { 345 # ifndef CFG_HUSH_PARSER 346 run_command (s, bd, 0); 347 # else 348 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 349 FLAG_EXIT_FROM_LOOP); 350 # endif 351 } 352 } 353 #endif /* CONFIG_MENUKEY */ 354 #endif /* CONFIG_BOOTDELAY */ 355 356 #ifdef CONFIG_AMIGAONEG3SE 357 { 358 extern void video_banner(void); 359 video_banner(); 360 } 361 #endif 362 363 /* 364 * Main Loop for Monitor Command Processing 365 */ 366 #ifdef CFG_HUSH_PARSER 367 parse_file_outer(); 368 /* This point is never reached */ 369 for (;;); 370 #else 371 for (;;) { 372 #ifdef CONFIG_BOOT_RETRY_TIME 373 if (rc >= 0) { 374 /* Saw enough of a valid command to 375 * restart the timeout. 376 */ 377 reset_cmd_timeout(); 378 } 379 #endif 380 len = readline (CFG_PROMPT); 381 382 flag = 0; /* assume no special flags for now */ 383 if (len > 0) 384 strcpy (lastcommand, console_buffer); 385 else if (len == 0) 386 flag |= CMD_FLAG_REPEAT; 387 #ifdef CONFIG_BOOT_RETRY_TIME 388 else if (len == -2) { 389 /* -2 means timed out, retry autoboot 390 */ 391 printf("\nTimed out waiting for command\n"); 392 # ifdef CONFIG_RESET_TO_RETRY 393 /* Reinit board to run initialization code again */ 394 do_reset (NULL, 0, 0, NULL); 395 # else 396 return; /* retry autoboot */ 397 # endif 398 } 399 #endif 400 401 if (len == -1) 402 printf ("<INTERRUPT>\n"); 403 else 404 rc = run_command (lastcommand, flag); 405 406 if (rc <= 0) { 407 /* invalid command or not repeatable, forget it */ 408 lastcommand[0] = 0; 409 } 410 } 411 #endif /*CFG_HUSH_PARSER*/ 412 } 413 414 /*************************************************************************** 415 * reset command line timeout to retry_time seconds 416 */ 417 #ifdef CONFIG_BOOT_RETRY_TIME 418 void reset_cmd_timeout(void) 419 { 420 endtime = endtick(retry_time); 421 } 422 #endif 423 424 /****************************************************************************/ 425 426 /* 427 * Prompt for input and read a line. 428 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 429 * time out when time goes past endtime (timebase time in ticks). 430 * Return: number of read characters 431 * -1 if break 432 * -2 if timed out 433 */ 434 int readline (const char *const prompt) 435 { 436 char *p = console_buffer; 437 int n = 0; /* buffer index */ 438 int plen = 0; /* prompt length */ 439 int col; /* output column cnt */ 440 char c; 441 442 /* print prompt */ 443 if (prompt) { 444 plen = strlen (prompt); 445 puts (prompt); 446 } 447 col = plen; 448 449 for (;;) { 450 #ifdef CONFIG_BOOT_RETRY_TIME 451 while (!tstc()) { /* while no incoming data */ 452 if (retry_time >= 0 && get_ticks() > endtime) 453 return (-2); /* timed out */ 454 } 455 #endif 456 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 457 458 #ifdef CONFIG_SHOW_ACTIVITY 459 while (!tstc()) { 460 extern void show_activity(int arg); 461 show_activity(0); 462 } 463 #endif 464 c = getc(); 465 466 /* 467 * Special character handling 468 */ 469 switch (c) { 470 case '\r': /* Enter */ 471 case '\n': 472 *p = '\0'; 473 puts ("\r\n"); 474 return (p - console_buffer); 475 476 case 0x03: /* ^C - break */ 477 console_buffer[0] = '\0'; /* discard input */ 478 return (-1); 479 480 case 0x15: /* ^U - erase line */ 481 while (col > plen) { 482 puts (erase_seq); 483 --col; 484 } 485 p = console_buffer; 486 n = 0; 487 continue; 488 489 case 0x17: /* ^W - erase word */ 490 p=delete_char(console_buffer, p, &col, &n, plen); 491 while ((n > 0) && (*p != ' ')) { 492 p=delete_char(console_buffer, p, &col, &n, plen); 493 } 494 continue; 495 496 case 0x08: /* ^H - backspace */ 497 case 0x7F: /* DEL - backspace */ 498 p=delete_char(console_buffer, p, &col, &n, plen); 499 continue; 500 501 default: 502 /* 503 * Must be a normal character then 504 */ 505 if (n < CFG_CBSIZE-2) { 506 if (c == '\t') { /* expand TABs */ 507 puts (tab_seq+(col&07)); 508 col += 8 - (col&07); 509 } else { 510 ++col; /* echo input */ 511 putc (c); 512 } 513 *p++ = c; 514 ++n; 515 } else { /* Buffer full */ 516 putc ('\a'); 517 } 518 } 519 } 520 } 521 522 /****************************************************************************/ 523 524 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 525 { 526 char *s; 527 528 if (*np == 0) { 529 return (p); 530 } 531 532 if (*(--p) == '\t') { /* will retype the whole line */ 533 while (*colp > plen) { 534 puts (erase_seq); 535 (*colp)--; 536 } 537 for (s=buffer; s<p; ++s) { 538 if (*s == '\t') { 539 puts (tab_seq+((*colp) & 07)); 540 *colp += 8 - ((*colp) & 07); 541 } else { 542 ++(*colp); 543 putc (*s); 544 } 545 } 546 } else { 547 puts (erase_seq); 548 (*colp)--; 549 } 550 (*np)--; 551 return (p); 552 } 553 554 /****************************************************************************/ 555 556 int parse_line (char *line, char *argv[]) 557 { 558 int nargs = 0; 559 560 #ifdef DEBUG_PARSER 561 printf ("parse_line: \"%s\"\n", line); 562 #endif 563 while (nargs < CFG_MAXARGS) { 564 565 /* skip any white space */ 566 while ((*line == ' ') || (*line == '\t')) { 567 ++line; 568 } 569 570 if (*line == '\0') { /* end of line, no more args */ 571 argv[nargs] = NULL; 572 #ifdef DEBUG_PARSER 573 printf ("parse_line: nargs=%d\n", nargs); 574 #endif 575 return (nargs); 576 } 577 578 argv[nargs++] = line; /* begin of argument string */ 579 580 /* find end of string */ 581 while (*line && (*line != ' ') && (*line != '\t')) { 582 ++line; 583 } 584 585 if (*line == '\0') { /* end of line, no more args */ 586 argv[nargs] = NULL; 587 #ifdef DEBUG_PARSER 588 printf ("parse_line: nargs=%d\n", nargs); 589 #endif 590 return (nargs); 591 } 592 593 *line++ = '\0'; /* terminate current arg */ 594 } 595 596 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); 597 598 #ifdef DEBUG_PARSER 599 printf ("parse_line: nargs=%d\n", nargs); 600 #endif 601 return (nargs); 602 } 603 604 /****************************************************************************/ 605 606 static void process_macros (const char *input, char *output) 607 { 608 char c, prev; 609 const char *varname_start = NULL; 610 int inputcnt = strlen (input); 611 int outputcnt = CFG_CBSIZE; 612 int state = 0; /* 0 = waiting for '$' */ 613 /* 1 = waiting for '(' */ 614 /* 2 = waiting for ')' */ 615 616 #ifdef DEBUG_PARSER 617 char *output_start = output; 618 619 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); 620 #endif 621 622 prev = '\0'; /* previous character */ 623 624 while (inputcnt && outputcnt) { 625 c = *input++; 626 inputcnt--; 627 628 /* remove one level of escape characters */ 629 if ((c == '\\') && (prev != '\\')) { 630 if (inputcnt-- == 0) 631 break; 632 prev = c; 633 c = *input++; 634 } 635 636 switch (state) { 637 case 0: /* Waiting for (unescaped) $ */ 638 if ((c == '$') && (prev != '\\')) { 639 state++; 640 } else { 641 *(output++) = c; 642 outputcnt--; 643 } 644 break; 645 case 1: /* Waiting for ( */ 646 if (c == '(') { 647 state++; 648 varname_start = input; 649 } else { 650 state = 0; 651 *(output++) = '$'; 652 outputcnt--; 653 654 if (outputcnt) { 655 *(output++) = c; 656 outputcnt--; 657 } 658 } 659 break; 660 case 2: /* Waiting for ) */ 661 if (c == ')') { 662 int i; 663 char envname[CFG_CBSIZE], *envval; 664 int envcnt = input-varname_start-1; /* Varname # of chars */ 665 666 /* Get the varname */ 667 for (i = 0; i < envcnt; i++) { 668 envname[i] = varname_start[i]; 669 } 670 envname[i] = 0; 671 672 /* Get its value */ 673 envval = getenv (envname); 674 675 /* Copy into the line if it exists */ 676 if (envval != NULL) 677 while ((*envval) && outputcnt) { 678 *(output++) = *(envval++); 679 outputcnt--; 680 } 681 /* Look for another '$' */ 682 state = 0; 683 } 684 break; 685 } 686 687 prev = c; 688 } 689 690 if (outputcnt) 691 *output = 0; 692 693 #ifdef DEBUG_PARSER 694 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 695 strlen(output_start), output_start); 696 #endif 697 } 698 699 /**************************************************************************** 700 * returns: 701 * 1 - command executed, repeatable 702 * 0 - command executed but not repeatable, interrupted commands are 703 * always considered not repeatable 704 * -1 - not executed (unrecognized, bootd recursion or too many args) 705 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is 706 * considered unrecognized) 707 * 708 * WARNING: 709 * 710 * We must create a temporary copy of the command since the command we get 711 * may be the result from getenv(), which returns a pointer directly to 712 * the environment data, which may change magicly when the command we run 713 * creates or modifies environment variables (like "bootp" does). 714 */ 715 716 int run_command (const char *cmd, int flag) 717 { 718 cmd_tbl_t *cmdtp; 719 char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ 720 char *token; /* start of token in cmdbuf */ 721 char *sep; /* end of token (separator) in cmdbuf */ 722 char finaltoken[CFG_CBSIZE]; 723 char *str = cmdbuf; 724 char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ 725 int argc; 726 int repeatable = 1; 727 728 #ifdef DEBUG_PARSER 729 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 730 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 731 puts ("\"\n"); 732 #endif 733 734 clear_ctrlc(); /* forget any previous Control C */ 735 736 if (!cmd || !*cmd) { 737 return -1; /* empty command */ 738 } 739 740 if (strlen(cmd) >= CFG_CBSIZE) { 741 puts ("## Command too long!\n"); 742 return -1; 743 } 744 745 strcpy (cmdbuf, cmd); 746 747 /* Process separators and check for invalid 748 * repeatable commands 749 */ 750 751 #ifdef DEBUG_PARSER 752 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 753 #endif 754 while (*str) { 755 756 /* 757 * Find separator, or string end 758 * Allow simple escape of ';' by writing "\;" 759 */ 760 for (sep = str; *sep; sep++) { 761 if ((*sep == ';') && /* separator */ 762 ( sep != str) && /* past string start */ 763 (*(sep-1) != '\\')) /* and NOT escaped */ 764 break; 765 } 766 767 /* 768 * Limit the token to data between separators 769 */ 770 token = str; 771 if (*sep) { 772 str = sep + 1; /* start of command for next pass */ 773 *sep = '\0'; 774 } 775 else 776 str = sep; /* no more commands for next pass */ 777 #ifdef DEBUG_PARSER 778 printf ("token: \"%s\"\n", token); 779 #endif 780 781 /* find macros in this token and replace them */ 782 process_macros (token, finaltoken); 783 784 /* Extract arguments */ 785 argc = parse_line (finaltoken, argv); 786 787 /* Look up command in command table */ 788 if ((cmdtp = find_cmd(argv[0])) == NULL) { 789 printf ("Unknown command '%s' - try 'help'\n", argv[0]); 790 return -1; /* give up after bad command */ 791 } 792 793 /* found - check max args */ 794 if (argc > cmdtp->maxargs) { 795 printf ("Usage:\n%s\n", cmdtp->usage); 796 return -1; 797 } 798 799 #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) 800 /* avoid "bootd" recursion */ 801 if (cmdtp->cmd == do_bootd) { 802 #ifdef DEBUG_PARSER 803 printf ("[%s]\n", finaltoken); 804 #endif 805 if (flag & CMD_FLAG_BOOTD) { 806 printf ("'bootd' recursion detected\n"); 807 return -1; 808 } 809 else 810 flag |= CMD_FLAG_BOOTD; 811 } 812 #endif /* CFG_CMD_BOOTD */ 813 814 /* OK - call function to do the command */ 815 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { 816 return (-1); 817 } 818 819 repeatable &= cmdtp->repeatable; 820 821 /* Did the user stop this? */ 822 if (had_ctrlc ()) 823 return 0; /* if stopped then not repeatable */ 824 } 825 826 return repeatable; 827 } 828 829 /****************************************************************************/ 830 831 #if (CONFIG_COMMANDS & CFG_CMD_RUN) 832 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 833 { 834 int i; 835 int rcode = 1; 836 837 if (argc < 2) { 838 printf ("Usage:\n%s\n", cmdtp->usage); 839 return 1; 840 } 841 842 for (i=1; i<argc; ++i) { 843 #ifndef CFG_HUSH_PARSER 844 if (run_command (getenv (argv[i]), flag) != -1) ++rcode; 845 #else 846 if (parse_string_outer(getenv (argv[i]), 847 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) == 0) ++rcode; 848 #endif 849 } 850 return ((rcode == i) ? 0 : 1); 851 } 852 #endif 853