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 CFG_HUSH_PARSER 283 u_boot_hush_start (); 284 #endif 285 286 #ifdef CONFIG_PREBOOT 287 if ((p = getenv ("preboot")) != NULL) { 288 # ifdef CONFIG_AUTOBOOT_KEYED 289 int prev = disable_ctrlc(1); /* disable Control C checking */ 290 # endif 291 292 # ifndef CFG_HUSH_PARSER 293 run_command (p, 0); 294 # else 295 parse_string_outer(p, FLAG_PARSE_SEMICOLON | 296 FLAG_EXIT_FROM_LOOP); 297 # endif 298 299 # ifdef CONFIG_AUTOBOOT_KEYED 300 disable_ctrlc(prev); /* restore Control C checking */ 301 # endif 302 } 303 #endif /* CONFIG_PREBOOT */ 304 305 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 306 s = getenv ("bootdelay"); 307 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 308 309 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 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"); 322 323 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 324 325 if (bootdelay >= 0 && s && !abortboot (bootdelay)) { 326 # ifdef CONFIG_AUTOBOOT_KEYED 327 int prev = disable_ctrlc(1); /* disable Control C checking */ 328 # endif 329 330 # ifndef CFG_HUSH_PARSER 331 run_command (s, 0); 332 # else 333 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 334 FLAG_EXIT_FROM_LOOP); 335 # endif 336 337 # ifdef CONFIG_AUTOBOOT_KEYED 338 disable_ctrlc(prev); /* restore Control C checking */ 339 # endif 340 } 341 342 # ifdef CONFIG_MENUKEY 343 if (menukey == CONFIG_MENUKEY) { 344 s = getenv("menucmd"); 345 if (s) { 346 # ifndef CFG_HUSH_PARSER 347 run_command (s, bd, 0); 348 # else 349 parse_string_outer(s, FLAG_PARSE_SEMICOLON | 350 FLAG_EXIT_FROM_LOOP); 351 # endif 352 } 353 } 354 #endif /* CONFIG_MENUKEY */ 355 #endif /* CONFIG_BOOTDELAY */ 356 357 #ifdef CONFIG_AMIGAONEG3SE 358 { 359 extern void video_banner(void); 360 video_banner(); 361 } 362 #endif 363 364 /* 365 * Main Loop for Monitor Command Processing 366 */ 367 #ifdef CFG_HUSH_PARSER 368 parse_file_outer(); 369 /* This point is never reached */ 370 for (;;); 371 #else 372 for (;;) { 373 #ifdef CONFIG_BOOT_RETRY_TIME 374 if (rc >= 0) { 375 /* Saw enough of a valid command to 376 * restart the timeout. 377 */ 378 reset_cmd_timeout(); 379 } 380 #endif 381 len = readline (CFG_PROMPT); 382 383 flag = 0; /* assume no special flags for now */ 384 if (len > 0) 385 strcpy (lastcommand, console_buffer); 386 else if (len == 0) 387 flag |= CMD_FLAG_REPEAT; 388 #ifdef CONFIG_BOOT_RETRY_TIME 389 else if (len == -2) { 390 /* -2 means timed out, retry autoboot 391 */ 392 printf("\nTimed out waiting for command\n"); 393 # ifdef CONFIG_RESET_TO_RETRY 394 /* Reinit board to run initialization code again */ 395 do_reset (NULL, 0, 0, NULL); 396 # else 397 return; /* retry autoboot */ 398 # endif 399 } 400 #endif 401 402 if (len == -1) 403 printf ("<INTERRUPT>\n"); 404 else 405 rc = run_command (lastcommand, flag); 406 407 if (rc <= 0) { 408 /* invalid command or not repeatable, forget it */ 409 lastcommand[0] = 0; 410 } 411 } 412 #endif /*CFG_HUSH_PARSER*/ 413 } 414 415 /*************************************************************************** 416 * reset command line timeout to retry_time seconds 417 */ 418 #ifdef CONFIG_BOOT_RETRY_TIME 419 void reset_cmd_timeout(void) 420 { 421 endtime = endtick(retry_time); 422 } 423 #endif 424 425 /****************************************************************************/ 426 427 /* 428 * Prompt for input and read a line. 429 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 430 * time out when time goes past endtime (timebase time in ticks). 431 * Return: number of read characters 432 * -1 if break 433 * -2 if timed out 434 */ 435 int readline (const char *const prompt) 436 { 437 char *p = console_buffer; 438 int n = 0; /* buffer index */ 439 int plen = 0; /* prompt length */ 440 int col; /* output column cnt */ 441 char c; 442 443 /* print prompt */ 444 if (prompt) { 445 plen = strlen (prompt); 446 puts (prompt); 447 } 448 col = plen; 449 450 for (;;) { 451 #ifdef CONFIG_BOOT_RETRY_TIME 452 while (!tstc()) { /* while no incoming data */ 453 if (retry_time >= 0 && get_ticks() > endtime) 454 return (-2); /* timed out */ 455 } 456 #endif 457 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 458 459 #ifdef CONFIG_SHOW_ACTIVITY 460 while (!tstc()) { 461 extern void show_activity(int arg); 462 show_activity(0); 463 } 464 #endif 465 c = getc(); 466 467 /* 468 * Special character handling 469 */ 470 switch (c) { 471 case '\r': /* Enter */ 472 case '\n': 473 *p = '\0'; 474 puts ("\r\n"); 475 return (p - console_buffer); 476 477 case 0x03: /* ^C - break */ 478 console_buffer[0] = '\0'; /* discard input */ 479 return (-1); 480 481 case 0x15: /* ^U - erase line */ 482 while (col > plen) { 483 puts (erase_seq); 484 --col; 485 } 486 p = console_buffer; 487 n = 0; 488 continue; 489 490 case 0x17: /* ^W - erase word */ 491 p=delete_char(console_buffer, p, &col, &n, plen); 492 while ((n > 0) && (*p != ' ')) { 493 p=delete_char(console_buffer, p, &col, &n, plen); 494 } 495 continue; 496 497 case 0x08: /* ^H - backspace */ 498 case 0x7F: /* DEL - backspace */ 499 p=delete_char(console_buffer, p, &col, &n, plen); 500 continue; 501 502 default: 503 /* 504 * Must be a normal character then 505 */ 506 if (n < CFG_CBSIZE-2) { 507 if (c == '\t') { /* expand TABs */ 508 puts (tab_seq+(col&07)); 509 col += 8 - (col&07); 510 } else { 511 ++col; /* echo input */ 512 putc (c); 513 } 514 *p++ = c; 515 ++n; 516 } else { /* Buffer full */ 517 putc ('\a'); 518 } 519 } 520 } 521 } 522 523 /****************************************************************************/ 524 525 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 526 { 527 char *s; 528 529 if (*np == 0) { 530 return (p); 531 } 532 533 if (*(--p) == '\t') { /* will retype the whole line */ 534 while (*colp > plen) { 535 puts (erase_seq); 536 (*colp)--; 537 } 538 for (s=buffer; s<p; ++s) { 539 if (*s == '\t') { 540 puts (tab_seq+((*colp) & 07)); 541 *colp += 8 - ((*colp) & 07); 542 } else { 543 ++(*colp); 544 putc (*s); 545 } 546 } 547 } else { 548 puts (erase_seq); 549 (*colp)--; 550 } 551 (*np)--; 552 return (p); 553 } 554 555 /****************************************************************************/ 556 557 int parse_line (char *line, char *argv[]) 558 { 559 int nargs = 0; 560 561 #ifdef DEBUG_PARSER 562 printf ("parse_line: \"%s\"\n", line); 563 #endif 564 while (nargs < CFG_MAXARGS) { 565 566 /* skip any white space */ 567 while ((*line == ' ') || (*line == '\t')) { 568 ++line; 569 } 570 571 if (*line == '\0') { /* end of line, no more args */ 572 argv[nargs] = NULL; 573 #ifdef DEBUG_PARSER 574 printf ("parse_line: nargs=%d\n", nargs); 575 #endif 576 return (nargs); 577 } 578 579 argv[nargs++] = line; /* begin of argument string */ 580 581 /* find end of string */ 582 while (*line && (*line != ' ') && (*line != '\t')) { 583 ++line; 584 } 585 586 if (*line == '\0') { /* end of line, no more args */ 587 argv[nargs] = NULL; 588 #ifdef DEBUG_PARSER 589 printf ("parse_line: nargs=%d\n", nargs); 590 #endif 591 return (nargs); 592 } 593 594 *line++ = '\0'; /* terminate current arg */ 595 } 596 597 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); 598 599 #ifdef DEBUG_PARSER 600 printf ("parse_line: nargs=%d\n", nargs); 601 #endif 602 return (nargs); 603 } 604 605 /****************************************************************************/ 606 607 static void process_macros (const char *input, char *output) 608 { 609 char c, prev; 610 const char *varname_start = NULL; 611 int inputcnt = strlen (input); 612 int outputcnt = CFG_CBSIZE; 613 int state = 0; /* 0 = waiting for '$' */ 614 /* 1 = waiting for '(' */ 615 /* 2 = waiting for ')' */ 616 /* 3 = waiting for ''' */ 617 #ifdef DEBUG_PARSER 618 char *output_start = output; 619 620 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); 621 #endif 622 623 prev = '\0'; /* previous character */ 624 625 while (inputcnt && outputcnt) { 626 c = *input++; 627 inputcnt--; 628 629 if (state!=3) { 630 /* remove one level of escape characters */ 631 if ((c == '\\') && (prev != '\\')) { 632 if (inputcnt-- == 0) 633 break; 634 prev = c; 635 c = *input++; 636 } 637 } 638 639 switch (state) { 640 case 0: /* Waiting for (unescaped) $ */ 641 if ((c == '\'') && (prev != '\\')) { 642 state = 3; 643 if (inputcnt) 644 inputcnt--; 645 break; 646 } 647 if ((c == '$') && (prev != '\\')) { 648 state++; 649 } else { 650 *(output++) = c; 651 outputcnt--; 652 } 653 break; 654 case 1: /* Waiting for ( */ 655 if (c == '(') { 656 state++; 657 varname_start = input; 658 } else { 659 state = 0; 660 *(output++) = '$'; 661 outputcnt--; 662 663 if (outputcnt) { 664 *(output++) = c; 665 outputcnt--; 666 } 667 } 668 break; 669 case 2: /* Waiting for ) */ 670 if (c == ')') { 671 int i; 672 char envname[CFG_CBSIZE], *envval; 673 int envcnt = input-varname_start-1; /* Varname # of chars */ 674 675 /* Get the varname */ 676 for (i = 0; i < envcnt; i++) { 677 envname[i] = varname_start[i]; 678 } 679 envname[i] = 0; 680 681 /* Get its value */ 682 envval = getenv (envname); 683 684 /* Copy into the line if it exists */ 685 if (envval != NULL) 686 while ((*envval) && outputcnt) { 687 *(output++) = *(envval++); 688 outputcnt--; 689 } 690 /* Look for another '$' */ 691 state = 0; 692 } 693 break; 694 case 3: /* Waiting for ' */ 695 if ((c == '\'') && (prev != '\\')) { 696 state = 0; 697 if (inputcnt) 698 inputcnt--; 699 } else { 700 *(output++) = c; 701 outputcnt--; 702 } 703 break; 704 } 705 prev = c; 706 } 707 708 if (outputcnt) 709 *output = 0; 710 711 #ifdef DEBUG_PARSER 712 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 713 strlen(output_start), output_start); 714 #endif 715 } 716 717 /**************************************************************************** 718 * returns: 719 * 1 - command executed, repeatable 720 * 0 - command executed but not repeatable, interrupted commands are 721 * always considered not repeatable 722 * -1 - not executed (unrecognized, bootd recursion or too many args) 723 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is 724 * considered unrecognized) 725 * 726 * WARNING: 727 * 728 * We must create a temporary copy of the command since the command we get 729 * may be the result from getenv(), which returns a pointer directly to 730 * the environment data, which may change magicly when the command we run 731 * creates or modifies environment variables (like "bootp" does). 732 */ 733 734 int run_command (const char *cmd, int flag) 735 { 736 cmd_tbl_t *cmdtp; 737 char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ 738 char *token; /* start of token in cmdbuf */ 739 char *sep; /* end of token (separator) in cmdbuf */ 740 char finaltoken[CFG_CBSIZE]; 741 char *str = cmdbuf; 742 char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ 743 int argc; 744 int repeatable = 1; 745 int inquotes; 746 747 #ifdef DEBUG_PARSER 748 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 749 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 750 puts ("\"\n"); 751 #endif 752 753 clear_ctrlc(); /* forget any previous Control C */ 754 755 if (!cmd || !*cmd) { 756 return -1; /* empty command */ 757 } 758 759 if (strlen(cmd) >= CFG_CBSIZE) { 760 puts ("## Command too long!\n"); 761 return -1; 762 } 763 764 strcpy (cmdbuf, cmd); 765 766 /* Process separators and check for invalid 767 * repeatable commands 768 */ 769 770 #ifdef DEBUG_PARSER 771 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 772 #endif 773 while (*str) { 774 775 /* 776 * Find separator, or string end 777 * Allow simple escape of ';' by writing "\;" 778 */ 779 for (inquotes = 0, sep = str; *sep; sep++) { 780 if ((*sep=='\'') && 781 (*(sep-1) != '\\')) 782 inquotes=!inquotes; 783 784 if (!inquotes && 785 (*sep == ';') && /* separator */ 786 ( sep != str) && /* past string start */ 787 (*(sep-1) != '\\')) /* and NOT escaped */ 788 break; 789 } 790 791 /* 792 * Limit the token to data between separators 793 */ 794 token = str; 795 if (*sep) { 796 str = sep + 1; /* start of command for next pass */ 797 *sep = '\0'; 798 } 799 else 800 str = sep; /* no more commands for next pass */ 801 #ifdef DEBUG_PARSER 802 printf ("token: \"%s\"\n", token); 803 #endif 804 805 /* find macros in this token and replace them */ 806 process_macros (token, finaltoken); 807 808 /* Extract arguments */ 809 argc = parse_line (finaltoken, argv); 810 811 /* Look up command in command table */ 812 if ((cmdtp = find_cmd(argv[0])) == NULL) { 813 printf ("Unknown command '%s' - try 'help'\n", argv[0]); 814 return -1; /* give up after bad command */ 815 } 816 817 /* found - check max args */ 818 if (argc > cmdtp->maxargs) { 819 printf ("Usage:\n%s\n", cmdtp->usage); 820 return -1; 821 } 822 823 #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) 824 /* avoid "bootd" recursion */ 825 if (cmdtp->cmd == do_bootd) { 826 #ifdef DEBUG_PARSER 827 printf ("[%s]\n", finaltoken); 828 #endif 829 if (flag & CMD_FLAG_BOOTD) { 830 printf ("'bootd' recursion detected\n"); 831 return -1; 832 } 833 else 834 flag |= CMD_FLAG_BOOTD; 835 } 836 #endif /* CFG_CMD_BOOTD */ 837 838 /* OK - call function to do the command */ 839 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { 840 return (-1); 841 } 842 843 repeatable &= cmdtp->repeatable; 844 845 /* Did the user stop this? */ 846 if (had_ctrlc ()) 847 return 0; /* if stopped then not repeatable */ 848 } 849 850 return repeatable; 851 } 852 853 /****************************************************************************/ 854 855 #if (CONFIG_COMMANDS & CFG_CMD_RUN) 856 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 857 { 858 int i; 859 int rcode = 1; 860 861 if (argc < 2) { 862 printf ("Usage:\n%s\n", cmdtp->usage); 863 return 1; 864 } 865 866 for (i=1; i<argc; ++i) { 867 #ifndef CFG_HUSH_PARSER 868 if (run_command (getenv (argv[i]), flag) != -1) ++rcode; 869 #else 870 if (parse_string_outer(getenv (argv[i]), 871 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) == 0) ++rcode; 872 #endif 873 } 874 return ((rcode == i) ? 0 : 1); 875 } 876 #endif 877