1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * Add to readline cmdline-editing by 6 * (C) Copyright 2005 7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com> 8 * 9 * See file CREDITS for list of people who contributed to this 10 * project. 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 25 * MA 02111-1307 USA 26 */ 27 28 /* #define DEBUG */ 29 30 #include <common.h> 31 #include <watchdog.h> 32 #include <command.h> 33 #include <fdtdec.h> 34 #include <malloc.h> 35 #include <version.h> 36 #ifdef CONFIG_MODEM_SUPPORT 37 #include <malloc.h> /* for free() prototype */ 38 #endif 39 40 #ifdef CONFIG_SYS_HUSH_PARSER 41 #include <hush.h> 42 #endif 43 44 #ifdef CONFIG_OF_CONTROL 45 #include <fdtdec.h> 46 #endif 47 48 #include <post.h> 49 #include <linux/ctype.h> 50 #include <menu.h> 51 52 DECLARE_GLOBAL_DATA_PTR; 53 54 /* 55 * Board-specific Platform code can reimplement show_boot_progress () if needed 56 */ 57 void inline __show_boot_progress (int val) {} 58 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress"))); 59 60 #define MAX_DELAY_STOP_STR 32 61 62 #undef DEBUG_PARSER 63 64 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ 65 66 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); 67 static const char erase_seq[] = "\b \b"; /* erase sequence */ 68 static const char tab_seq[] = " "; /* used to expand TABs */ 69 70 #ifdef CONFIG_BOOT_RETRY_TIME 71 static uint64_t endtime = 0; /* must be set, default is instant timeout */ 72 static int retry_time = -1; /* -1 so can call readline before main_loop */ 73 #endif 74 75 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) 76 77 #ifndef CONFIG_BOOT_RETRY_MIN 78 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 79 #endif 80 81 #ifdef CONFIG_MODEM_SUPPORT 82 int do_mdm_init = 0; 83 extern void mdm_init(void); /* defined in board.c */ 84 #endif 85 86 /*************************************************************************** 87 * Watch for 'delay' seconds for autoboot stop or autoboot delay string. 88 * returns: 0 - no key string, allow autoboot 1 - got key string, abort 89 */ 90 #if defined(CONFIG_BOOTDELAY) 91 # if defined(CONFIG_AUTOBOOT_KEYED) 92 #ifndef CONFIG_MENU 93 static inline 94 #endif 95 int abortboot(int bootdelay) 96 { 97 int abort = 0; 98 uint64_t etime = endtick(bootdelay); 99 struct { 100 char* str; 101 u_int len; 102 int retry; 103 } 104 delaykey [] = { 105 { str: getenv ("bootdelaykey"), retry: 1 }, 106 { str: getenv ("bootdelaykey2"), retry: 1 }, 107 { str: getenv ("bootstopkey"), retry: 0 }, 108 { str: getenv ("bootstopkey2"), retry: 0 }, 109 }; 110 111 char presskey [MAX_DELAY_STOP_STR]; 112 u_int presskey_len = 0; 113 u_int presskey_max = 0; 114 u_int i; 115 116 #ifndef CONFIG_ZERO_BOOTDELAY_CHECK 117 if (bootdelay == 0) 118 return 0; 119 #endif 120 121 # ifdef CONFIG_AUTOBOOT_PROMPT 122 printf(CONFIG_AUTOBOOT_PROMPT); 123 # endif 124 125 # ifdef CONFIG_AUTOBOOT_DELAY_STR 126 if (delaykey[0].str == NULL) 127 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 128 # endif 129 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 130 if (delaykey[1].str == NULL) 131 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 132 # endif 133 # ifdef CONFIG_AUTOBOOT_STOP_STR 134 if (delaykey[2].str == NULL) 135 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 136 # endif 137 # ifdef CONFIG_AUTOBOOT_STOP_STR2 138 if (delaykey[3].str == NULL) 139 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 140 # endif 141 142 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 143 delaykey[i].len = delaykey[i].str == NULL ? 144 0 : strlen (delaykey[i].str); 145 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 146 MAX_DELAY_STOP_STR : delaykey[i].len; 147 148 presskey_max = presskey_max > delaykey[i].len ? 149 presskey_max : delaykey[i].len; 150 151 # if DEBUG_BOOTKEYS 152 printf("%s key:<%s>\n", 153 delaykey[i].retry ? "delay" : "stop", 154 delaykey[i].str ? delaykey[i].str : "NULL"); 155 # endif 156 } 157 158 /* In order to keep up with incoming data, check timeout only 159 * when catch up. 160 */ 161 do { 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 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 175 if (delaykey[i].len > 0 && 176 presskey_len >= delaykey[i].len && 177 memcmp (presskey + presskey_len - delaykey[i].len, 178 delaykey[i].str, 179 delaykey[i].len) == 0) { 180 # if DEBUG_BOOTKEYS 181 printf("got %skey\n", 182 delaykey[i].retry ? "delay" : "stop"); 183 # endif 184 185 # ifdef CONFIG_BOOT_RETRY_TIME 186 /* don't retry auto boot */ 187 if (! delaykey[i].retry) 188 retry_time = -1; 189 # endif 190 abort = 1; 191 } 192 } 193 } while (!abort && get_ticks() <= etime); 194 195 # if DEBUG_BOOTKEYS 196 if (!abort) 197 puts("key timeout\n"); 198 # endif 199 200 #ifdef CONFIG_SILENT_CONSOLE 201 if (abort) 202 gd->flags &= ~GD_FLG_SILENT; 203 #endif 204 205 return abort; 206 } 207 208 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 209 210 #ifdef CONFIG_MENUKEY 211 static int menukey = 0; 212 #endif 213 214 #ifndef CONFIG_MENU 215 static inline 216 #endif 217 int abortboot(int bootdelay) 218 { 219 int abort = 0; 220 unsigned long ts; 221 222 #ifdef CONFIG_MENUPROMPT 223 printf(CONFIG_MENUPROMPT); 224 #else 225 if (bootdelay >= 0) 226 printf("Hit any key to stop autoboot: %2d ", bootdelay); 227 #endif 228 229 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 230 /* 231 * Check if key already pressed 232 * Don't check if bootdelay < 0 233 */ 234 if (bootdelay >= 0) { 235 if (tstc()) { /* we got a key press */ 236 (void) getc(); /* consume input */ 237 puts ("\b\b\b 0"); 238 abort = 1; /* don't auto boot */ 239 } 240 } 241 #endif 242 243 while ((bootdelay > 0) && (!abort)) { 244 --bootdelay; 245 /* delay 1000 ms */ 246 ts = get_timer(0); 247 do { 248 if (tstc()) { /* we got a key press */ 249 abort = 1; /* don't auto boot */ 250 bootdelay = 0; /* no more delay */ 251 # ifdef CONFIG_MENUKEY 252 menukey = getc(); 253 # else 254 (void) getc(); /* consume input */ 255 # endif 256 break; 257 } 258 udelay(10000); 259 } while (!abort && get_timer(ts) < 1000); 260 261 printf("\b\b\b%2d ", bootdelay); 262 } 263 264 putc('\n'); 265 266 #ifdef CONFIG_SILENT_CONSOLE 267 if (abort) 268 gd->flags &= ~GD_FLG_SILENT; 269 #endif 270 271 return abort; 272 } 273 # endif /* CONFIG_AUTOBOOT_KEYED */ 274 #endif /* CONFIG_BOOTDELAY */ 275 276 /* 277 * Runs the given boot command securely. Specifically: 278 * - Doesn't run the command with the shell (run_command or parse_string_outer), 279 * since that's a lot of code surface that an attacker might exploit. 280 * Because of this, we don't do any argument parsing--the secure boot command 281 * has to be a full-fledged u-boot command. 282 * - Doesn't check for keypresses before booting, since that could be a 283 * security hole; also disables Ctrl-C. 284 * - Doesn't allow the command to return. 285 * 286 * Upon any failures, this function will drop into an infinite loop after 287 * printing the error message to console. 288 */ 289 290 #if defined(CONFIG_BOOTDELAY) && defined(CONFIG_OF_CONTROL) 291 static void secure_boot_cmd(char *cmd) 292 { 293 cmd_tbl_t *cmdtp; 294 int rc; 295 296 if (!cmd) { 297 printf("## Error: Secure boot command not specified\n"); 298 goto err; 299 } 300 301 /* Disable Ctrl-C just in case some command is used that checks it. */ 302 disable_ctrlc(1); 303 304 /* Find the command directly. */ 305 cmdtp = find_cmd(cmd); 306 if (!cmdtp) { 307 printf("## Error: \"%s\" not defined\n", cmd); 308 goto err; 309 } 310 311 /* Run the command, forcing no flags and faking argc and argv. */ 312 rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd); 313 314 /* Shouldn't ever return from boot command. */ 315 printf("## Error: \"%s\" returned (code %d)\n", cmd, rc); 316 317 err: 318 /* 319 * Not a whole lot to do here. Rebooting won't help much, since we'll 320 * just end up right back here. Just loop. 321 */ 322 hang(); 323 } 324 325 static void process_fdt_options(const void *blob) 326 { 327 ulong addr; 328 329 /* Add an env variable to point to a kernel payload, if available */ 330 addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); 331 if (addr) 332 setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 333 334 /* Add an env variable to point to a root disk, if available */ 335 addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); 336 if (addr) 337 setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 338 } 339 #endif /* CONFIG_OF_CONTROL */ 340 341 342 /****************************************************************************/ 343 344 void main_loop (void) 345 { 346 #ifndef CONFIG_SYS_HUSH_PARSER 347 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, }; 348 int len; 349 int rc = 1; 350 int flag; 351 #endif 352 #if defined(CONFIG_BOOTDELAY) && defined(CONFIG_OF_CONTROL) 353 char *env; 354 #endif 355 #if defined(CONFIG_BOOTDELAY) 356 char *s; 357 int bootdelay; 358 #endif 359 #ifdef CONFIG_PREBOOT 360 char *p; 361 #endif 362 #ifdef CONFIG_BOOTCOUNT_LIMIT 363 unsigned long bootcount = 0; 364 unsigned long bootlimit = 0; 365 char *bcs; 366 char bcs_set[16]; 367 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 368 369 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 370 371 #ifdef CONFIG_BOOTCOUNT_LIMIT 372 bootcount = bootcount_load(); 373 bootcount++; 374 bootcount_store (bootcount); 375 sprintf (bcs_set, "%lu", bootcount); 376 setenv ("bootcount", bcs_set); 377 bcs = getenv ("bootlimit"); 378 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; 379 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 380 381 #ifdef CONFIG_MODEM_SUPPORT 382 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 383 if (do_mdm_init) { 384 char *str = strdup(getenv("mdm_cmd")); 385 setenv ("preboot", str); /* set or delete definition */ 386 if (str != NULL) 387 free (str); 388 mdm_init(); /* wait for modem connection */ 389 } 390 #endif /* CONFIG_MODEM_SUPPORT */ 391 392 #ifdef CONFIG_VERSION_VARIABLE 393 { 394 setenv ("ver", version_string); /* set version variable */ 395 } 396 #endif /* CONFIG_VERSION_VARIABLE */ 397 398 #ifdef CONFIG_SYS_HUSH_PARSER 399 u_boot_hush_start (); 400 #endif 401 402 #if defined(CONFIG_HUSH_INIT_VAR) 403 hush_init_var (); 404 #endif 405 406 #ifdef CONFIG_PREBOOT 407 if ((p = getenv ("preboot")) != NULL) { 408 # ifdef CONFIG_AUTOBOOT_KEYED 409 int prev = disable_ctrlc(1); /* disable Control C checking */ 410 # endif 411 412 run_command_list(p, -1, 0); 413 414 # ifdef CONFIG_AUTOBOOT_KEYED 415 disable_ctrlc(prev); /* restore Control C checking */ 416 # endif 417 } 418 #endif /* CONFIG_PREBOOT */ 419 420 #if defined(CONFIG_UPDATE_TFTP) 421 update_tftp (0UL); 422 #endif /* CONFIG_UPDATE_TFTP */ 423 424 #if defined(CONFIG_BOOTDELAY) 425 s = getenv ("bootdelay"); 426 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 427 428 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 429 430 #if defined(CONFIG_MENU_SHOW) 431 bootdelay = menu_show(bootdelay); 432 #endif 433 # ifdef CONFIG_BOOT_RETRY_TIME 434 init_cmd_timeout (); 435 # endif /* CONFIG_BOOT_RETRY_TIME */ 436 437 #ifdef CONFIG_POST 438 if (gd->flags & GD_FLG_POSTFAIL) { 439 s = getenv("failbootcmd"); 440 } 441 else 442 #endif /* CONFIG_POST */ 443 #ifdef CONFIG_BOOTCOUNT_LIMIT 444 if (bootlimit && (bootcount > bootlimit)) { 445 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", 446 (unsigned)bootlimit); 447 s = getenv ("altbootcmd"); 448 } 449 else 450 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 451 s = getenv ("bootcmd"); 452 #ifdef CONFIG_OF_CONTROL 453 /* Allow the fdt to override the boot command */ 454 env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd"); 455 if (env) 456 s = env; 457 458 process_fdt_options(gd->fdt_blob); 459 460 /* 461 * If the bootsecure option was chosen, use secure_boot_cmd(). 462 * Always use 'env' in this case, since bootsecure requres that the 463 * bootcmd was specified in the FDT too. 464 */ 465 if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0)) 466 secure_boot_cmd(env); 467 468 #endif /* CONFIG_OF_CONTROL */ 469 470 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 471 472 if (bootdelay != -1 && s && !abortboot(bootdelay)) { 473 # ifdef CONFIG_AUTOBOOT_KEYED 474 int prev = disable_ctrlc(1); /* disable Control C checking */ 475 # endif 476 477 run_command_list(s, -1, 0); 478 479 # ifdef CONFIG_AUTOBOOT_KEYED 480 disable_ctrlc(prev); /* restore Control C checking */ 481 # endif 482 } 483 484 # ifdef CONFIG_MENUKEY 485 if (menukey == CONFIG_MENUKEY) { 486 s = getenv("menucmd"); 487 if (s) 488 run_command_list(s, -1, 0); 489 } 490 #endif /* CONFIG_MENUKEY */ 491 #endif /* CONFIG_BOOTDELAY */ 492 493 /* 494 * Main Loop for Monitor Command Processing 495 */ 496 #ifdef CONFIG_SYS_HUSH_PARSER 497 parse_file_outer(); 498 /* This point is never reached */ 499 for (;;); 500 #else 501 for (;;) { 502 #ifdef CONFIG_BOOT_RETRY_TIME 503 if (rc >= 0) { 504 /* Saw enough of a valid command to 505 * restart the timeout. 506 */ 507 reset_cmd_timeout(); 508 } 509 #endif 510 len = readline (CONFIG_SYS_PROMPT); 511 512 flag = 0; /* assume no special flags for now */ 513 if (len > 0) 514 strcpy (lastcommand, console_buffer); 515 else if (len == 0) 516 flag |= CMD_FLAG_REPEAT; 517 #ifdef CONFIG_BOOT_RETRY_TIME 518 else if (len == -2) { 519 /* -2 means timed out, retry autoboot 520 */ 521 puts ("\nTimed out waiting for command\n"); 522 # ifdef CONFIG_RESET_TO_RETRY 523 /* Reinit board to run initialization code again */ 524 do_reset (NULL, 0, 0, NULL); 525 # else 526 return; /* retry autoboot */ 527 # endif 528 } 529 #endif 530 531 if (len == -1) 532 puts ("<INTERRUPT>\n"); 533 else 534 rc = run_command(lastcommand, flag); 535 536 if (rc <= 0) { 537 /* invalid command or not repeatable, forget it */ 538 lastcommand[0] = 0; 539 } 540 } 541 #endif /*CONFIG_SYS_HUSH_PARSER*/ 542 } 543 544 #ifdef CONFIG_BOOT_RETRY_TIME 545 /*************************************************************************** 546 * initialize command line timeout 547 */ 548 void init_cmd_timeout(void) 549 { 550 char *s = getenv ("bootretry"); 551 552 if (s != NULL) 553 retry_time = (int)simple_strtol(s, NULL, 10); 554 else 555 retry_time = CONFIG_BOOT_RETRY_TIME; 556 557 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 558 retry_time = CONFIG_BOOT_RETRY_MIN; 559 } 560 561 /*************************************************************************** 562 * reset command line timeout to retry_time seconds 563 */ 564 void reset_cmd_timeout(void) 565 { 566 endtime = endtick(retry_time); 567 } 568 #endif 569 570 #ifdef CONFIG_CMDLINE_EDITING 571 572 /* 573 * cmdline-editing related codes from vivi. 574 * Author: Janghoon Lyu <nandy@mizi.com> 575 */ 576 577 #define putnstr(str,n) do { \ 578 printf ("%.*s", (int)n, str); \ 579 } while (0) 580 581 #define CTL_CH(c) ((c) - 'a' + 1) 582 #define CTL_BACKSPACE ('\b') 583 #define DEL ((char)255) 584 #define DEL7 ((char)127) 585 #define CREAD_HIST_CHAR ('!') 586 587 #define getcmd_putch(ch) putc(ch) 588 #define getcmd_getch() getc() 589 #define getcmd_cbeep() getcmd_putch('\a') 590 591 #define HIST_MAX 20 592 #define HIST_SIZE CONFIG_SYS_CBSIZE 593 594 static int hist_max; 595 static int hist_add_idx; 596 static int hist_cur = -1; 597 static unsigned hist_num; 598 599 static char *hist_list[HIST_MAX]; 600 static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ 601 602 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) 603 604 static void hist_init(void) 605 { 606 int i; 607 608 hist_max = 0; 609 hist_add_idx = 0; 610 hist_cur = -1; 611 hist_num = 0; 612 613 for (i = 0; i < HIST_MAX; i++) { 614 hist_list[i] = hist_lines[i]; 615 hist_list[i][0] = '\0'; 616 } 617 } 618 619 static void cread_add_to_hist(char *line) 620 { 621 strcpy(hist_list[hist_add_idx], line); 622 623 if (++hist_add_idx >= HIST_MAX) 624 hist_add_idx = 0; 625 626 if (hist_add_idx > hist_max) 627 hist_max = hist_add_idx; 628 629 hist_num++; 630 } 631 632 static char* hist_prev(void) 633 { 634 char *ret; 635 int old_cur; 636 637 if (hist_cur < 0) 638 return NULL; 639 640 old_cur = hist_cur; 641 if (--hist_cur < 0) 642 hist_cur = hist_max; 643 644 if (hist_cur == hist_add_idx) { 645 hist_cur = old_cur; 646 ret = NULL; 647 } else 648 ret = hist_list[hist_cur]; 649 650 return (ret); 651 } 652 653 static char* hist_next(void) 654 { 655 char *ret; 656 657 if (hist_cur < 0) 658 return NULL; 659 660 if (hist_cur == hist_add_idx) 661 return NULL; 662 663 if (++hist_cur > hist_max) 664 hist_cur = 0; 665 666 if (hist_cur == hist_add_idx) { 667 ret = ""; 668 } else 669 ret = hist_list[hist_cur]; 670 671 return (ret); 672 } 673 674 #ifndef CONFIG_CMDLINE_EDITING 675 static void cread_print_hist_list(void) 676 { 677 int i; 678 unsigned long n; 679 680 n = hist_num - hist_max; 681 682 i = hist_add_idx + 1; 683 while (1) { 684 if (i > hist_max) 685 i = 0; 686 if (i == hist_add_idx) 687 break; 688 printf("%s\n", hist_list[i]); 689 n++; 690 i++; 691 } 692 } 693 #endif /* CONFIG_CMDLINE_EDITING */ 694 695 #define BEGINNING_OF_LINE() { \ 696 while (num) { \ 697 getcmd_putch(CTL_BACKSPACE); \ 698 num--; \ 699 } \ 700 } 701 702 #define ERASE_TO_EOL() { \ 703 if (num < eol_num) { \ 704 printf("%*s", (int)(eol_num - num), ""); \ 705 do { \ 706 getcmd_putch(CTL_BACKSPACE); \ 707 } while (--eol_num > num); \ 708 } \ 709 } 710 711 #define REFRESH_TO_EOL() { \ 712 if (num < eol_num) { \ 713 wlen = eol_num - num; \ 714 putnstr(buf + num, wlen); \ 715 num = eol_num; \ 716 } \ 717 } 718 719 static void cread_add_char(char ichar, int insert, unsigned long *num, 720 unsigned long *eol_num, char *buf, unsigned long len) 721 { 722 unsigned long wlen; 723 724 /* room ??? */ 725 if (insert || *num == *eol_num) { 726 if (*eol_num > len - 1) { 727 getcmd_cbeep(); 728 return; 729 } 730 (*eol_num)++; 731 } 732 733 if (insert) { 734 wlen = *eol_num - *num; 735 if (wlen > 1) { 736 memmove(&buf[*num+1], &buf[*num], wlen-1); 737 } 738 739 buf[*num] = ichar; 740 putnstr(buf + *num, wlen); 741 (*num)++; 742 while (--wlen) { 743 getcmd_putch(CTL_BACKSPACE); 744 } 745 } else { 746 /* echo the character */ 747 wlen = 1; 748 buf[*num] = ichar; 749 putnstr(buf + *num, wlen); 750 (*num)++; 751 } 752 } 753 754 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, 755 unsigned long *eol_num, char *buf, unsigned long len) 756 { 757 while (strsize--) { 758 cread_add_char(*str, insert, num, eol_num, buf, len); 759 str++; 760 } 761 } 762 763 static int cread_line(const char *const prompt, char *buf, unsigned int *len, 764 int timeout) 765 { 766 unsigned long num = 0; 767 unsigned long eol_num = 0; 768 unsigned long wlen; 769 char ichar; 770 int insert = 1; 771 int esc_len = 0; 772 char esc_save[8]; 773 int init_len = strlen(buf); 774 int first = 1; 775 776 if (init_len) 777 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); 778 779 while (1) { 780 #ifdef CONFIG_BOOT_RETRY_TIME 781 while (!tstc()) { /* while no incoming data */ 782 if (retry_time >= 0 && get_ticks() > endtime) 783 return (-2); /* timed out */ 784 WATCHDOG_RESET(); 785 } 786 #endif 787 if (first && timeout) { 788 uint64_t etime = endtick(timeout); 789 790 while (!tstc()) { /* while no incoming data */ 791 if (get_ticks() >= etime) 792 return -2; /* timed out */ 793 WATCHDOG_RESET(); 794 } 795 first = 0; 796 } 797 798 ichar = getcmd_getch(); 799 800 if ((ichar == '\n') || (ichar == '\r')) { 801 putc('\n'); 802 break; 803 } 804 805 /* 806 * handle standard linux xterm esc sequences for arrow key, etc. 807 */ 808 if (esc_len != 0) { 809 if (esc_len == 1) { 810 if (ichar == '[') { 811 esc_save[esc_len] = ichar; 812 esc_len = 2; 813 } else { 814 cread_add_str(esc_save, esc_len, insert, 815 &num, &eol_num, buf, *len); 816 esc_len = 0; 817 } 818 continue; 819 } 820 821 switch (ichar) { 822 823 case 'D': /* <- key */ 824 ichar = CTL_CH('b'); 825 esc_len = 0; 826 break; 827 case 'C': /* -> key */ 828 ichar = CTL_CH('f'); 829 esc_len = 0; 830 break; /* pass off to ^F handler */ 831 case 'H': /* Home key */ 832 ichar = CTL_CH('a'); 833 esc_len = 0; 834 break; /* pass off to ^A handler */ 835 case 'A': /* up arrow */ 836 ichar = CTL_CH('p'); 837 esc_len = 0; 838 break; /* pass off to ^P handler */ 839 case 'B': /* down arrow */ 840 ichar = CTL_CH('n'); 841 esc_len = 0; 842 break; /* pass off to ^N handler */ 843 default: 844 esc_save[esc_len++] = ichar; 845 cread_add_str(esc_save, esc_len, insert, 846 &num, &eol_num, buf, *len); 847 esc_len = 0; 848 continue; 849 } 850 } 851 852 switch (ichar) { 853 case 0x1b: 854 if (esc_len == 0) { 855 esc_save[esc_len] = ichar; 856 esc_len = 1; 857 } else { 858 puts("impossible condition #876\n"); 859 esc_len = 0; 860 } 861 break; 862 863 case CTL_CH('a'): 864 BEGINNING_OF_LINE(); 865 break; 866 case CTL_CH('c'): /* ^C - break */ 867 *buf = '\0'; /* discard input */ 868 return (-1); 869 case CTL_CH('f'): 870 if (num < eol_num) { 871 getcmd_putch(buf[num]); 872 num++; 873 } 874 break; 875 case CTL_CH('b'): 876 if (num) { 877 getcmd_putch(CTL_BACKSPACE); 878 num--; 879 } 880 break; 881 case CTL_CH('d'): 882 if (num < eol_num) { 883 wlen = eol_num - num - 1; 884 if (wlen) { 885 memmove(&buf[num], &buf[num+1], wlen); 886 putnstr(buf + num, wlen); 887 } 888 889 getcmd_putch(' '); 890 do { 891 getcmd_putch(CTL_BACKSPACE); 892 } while (wlen--); 893 eol_num--; 894 } 895 break; 896 case CTL_CH('k'): 897 ERASE_TO_EOL(); 898 break; 899 case CTL_CH('e'): 900 REFRESH_TO_EOL(); 901 break; 902 case CTL_CH('o'): 903 insert = !insert; 904 break; 905 case CTL_CH('x'): 906 case CTL_CH('u'): 907 BEGINNING_OF_LINE(); 908 ERASE_TO_EOL(); 909 break; 910 case DEL: 911 case DEL7: 912 case 8: 913 if (num) { 914 wlen = eol_num - num; 915 num--; 916 memmove(&buf[num], &buf[num+1], wlen); 917 getcmd_putch(CTL_BACKSPACE); 918 putnstr(buf + num, wlen); 919 getcmd_putch(' '); 920 do { 921 getcmd_putch(CTL_BACKSPACE); 922 } while (wlen--); 923 eol_num--; 924 } 925 break; 926 case CTL_CH('p'): 927 case CTL_CH('n'): 928 { 929 char * hline; 930 931 esc_len = 0; 932 933 if (ichar == CTL_CH('p')) 934 hline = hist_prev(); 935 else 936 hline = hist_next(); 937 938 if (!hline) { 939 getcmd_cbeep(); 940 continue; 941 } 942 943 /* nuke the current line */ 944 /* first, go home */ 945 BEGINNING_OF_LINE(); 946 947 /* erase to end of line */ 948 ERASE_TO_EOL(); 949 950 /* copy new line into place and display */ 951 strcpy(buf, hline); 952 eol_num = strlen(buf); 953 REFRESH_TO_EOL(); 954 continue; 955 } 956 #ifdef CONFIG_AUTO_COMPLETE 957 case '\t': { 958 int num2, col; 959 960 /* do not autocomplete when in the middle */ 961 if (num < eol_num) { 962 getcmd_cbeep(); 963 break; 964 } 965 966 buf[num] = '\0'; 967 col = strlen(prompt) + eol_num; 968 num2 = num; 969 if (cmd_auto_complete(prompt, buf, &num2, &col)) { 970 col = num2 - num; 971 num += col; 972 eol_num += col; 973 } 974 break; 975 } 976 #endif 977 default: 978 cread_add_char(ichar, insert, &num, &eol_num, buf, *len); 979 break; 980 } 981 } 982 *len = eol_num; 983 buf[eol_num] = '\0'; /* lose the newline */ 984 985 if (buf[0] && buf[0] != CREAD_HIST_CHAR) 986 cread_add_to_hist(buf); 987 hist_cur = hist_add_idx; 988 989 return 0; 990 } 991 992 #endif /* CONFIG_CMDLINE_EDITING */ 993 994 /****************************************************************************/ 995 996 /* 997 * Prompt for input and read a line. 998 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 999 * time out when time goes past endtime (timebase time in ticks). 1000 * Return: number of read characters 1001 * -1 if break 1002 * -2 if timed out 1003 */ 1004 int readline (const char *const prompt) 1005 { 1006 /* 1007 * If console_buffer isn't 0-length the user will be prompted to modify 1008 * it instead of entering it from scratch as desired. 1009 */ 1010 console_buffer[0] = '\0'; 1011 1012 return readline_into_buffer(prompt, console_buffer, 0); 1013 } 1014 1015 1016 int readline_into_buffer(const char *const prompt, char *buffer, int timeout) 1017 { 1018 char *p = buffer; 1019 #ifdef CONFIG_CMDLINE_EDITING 1020 unsigned int len = CONFIG_SYS_CBSIZE; 1021 int rc; 1022 static int initted = 0; 1023 1024 /* 1025 * History uses a global array which is not 1026 * writable until after relocation to RAM. 1027 * Revert to non-history version if still 1028 * running from flash. 1029 */ 1030 if (gd->flags & GD_FLG_RELOC) { 1031 if (!initted) { 1032 hist_init(); 1033 initted = 1; 1034 } 1035 1036 if (prompt) 1037 puts (prompt); 1038 1039 rc = cread_line(prompt, p, &len, timeout); 1040 return rc < 0 ? rc : len; 1041 1042 } else { 1043 #endif /* CONFIG_CMDLINE_EDITING */ 1044 char * p_buf = p; 1045 int n = 0; /* buffer index */ 1046 int plen = 0; /* prompt length */ 1047 int col; /* output column cnt */ 1048 char c; 1049 1050 /* print prompt */ 1051 if (prompt) { 1052 plen = strlen (prompt); 1053 puts (prompt); 1054 } 1055 col = plen; 1056 1057 for (;;) { 1058 #ifdef CONFIG_BOOT_RETRY_TIME 1059 while (!tstc()) { /* while no incoming data */ 1060 if (retry_time >= 0 && get_ticks() > endtime) 1061 return (-2); /* timed out */ 1062 WATCHDOG_RESET(); 1063 } 1064 #endif 1065 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 1066 1067 #ifdef CONFIG_SHOW_ACTIVITY 1068 while (!tstc()) { 1069 show_activity(0); 1070 WATCHDOG_RESET(); 1071 } 1072 #endif 1073 c = getc(); 1074 1075 /* 1076 * Special character handling 1077 */ 1078 switch (c) { 1079 case '\r': /* Enter */ 1080 case '\n': 1081 *p = '\0'; 1082 puts ("\r\n"); 1083 return (p - p_buf); 1084 1085 case '\0': /* nul */ 1086 continue; 1087 1088 case 0x03: /* ^C - break */ 1089 p_buf[0] = '\0'; /* discard input */ 1090 return (-1); 1091 1092 case 0x15: /* ^U - erase line */ 1093 while (col > plen) { 1094 puts (erase_seq); 1095 --col; 1096 } 1097 p = p_buf; 1098 n = 0; 1099 continue; 1100 1101 case 0x17: /* ^W - erase word */ 1102 p=delete_char(p_buf, p, &col, &n, plen); 1103 while ((n > 0) && (*p != ' ')) { 1104 p=delete_char(p_buf, p, &col, &n, plen); 1105 } 1106 continue; 1107 1108 case 0x08: /* ^H - backspace */ 1109 case 0x7F: /* DEL - backspace */ 1110 p=delete_char(p_buf, p, &col, &n, plen); 1111 continue; 1112 1113 default: 1114 /* 1115 * Must be a normal character then 1116 */ 1117 if (n < CONFIG_SYS_CBSIZE-2) { 1118 if (c == '\t') { /* expand TABs */ 1119 #ifdef CONFIG_AUTO_COMPLETE 1120 /* if auto completion triggered just continue */ 1121 *p = '\0'; 1122 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { 1123 p = p_buf + n; /* reset */ 1124 continue; 1125 } 1126 #endif 1127 puts (tab_seq+(col&07)); 1128 col += 8 - (col&07); 1129 } else { 1130 char buf[2]; 1131 1132 /* 1133 * Echo input using puts() to force am 1134 * LCD flush if we are using an LCD 1135 */ 1136 ++col; 1137 buf[0] = c; 1138 buf[1] = '\0'; 1139 puts(buf); 1140 } 1141 *p++ = c; 1142 ++n; 1143 } else { /* Buffer full */ 1144 putc ('\a'); 1145 } 1146 } 1147 } 1148 #ifdef CONFIG_CMDLINE_EDITING 1149 } 1150 #endif 1151 } 1152 1153 /****************************************************************************/ 1154 1155 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 1156 { 1157 char *s; 1158 1159 if (*np == 0) { 1160 return (p); 1161 } 1162 1163 if (*(--p) == '\t') { /* will retype the whole line */ 1164 while (*colp > plen) { 1165 puts (erase_seq); 1166 (*colp)--; 1167 } 1168 for (s=buffer; s<p; ++s) { 1169 if (*s == '\t') { 1170 puts (tab_seq+((*colp) & 07)); 1171 *colp += 8 - ((*colp) & 07); 1172 } else { 1173 ++(*colp); 1174 putc (*s); 1175 } 1176 } 1177 } else { 1178 puts (erase_seq); 1179 (*colp)--; 1180 } 1181 (*np)--; 1182 return (p); 1183 } 1184 1185 /****************************************************************************/ 1186 1187 int parse_line (char *line, char *argv[]) 1188 { 1189 int nargs = 0; 1190 1191 #ifdef DEBUG_PARSER 1192 printf ("parse_line: \"%s\"\n", line); 1193 #endif 1194 while (nargs < CONFIG_SYS_MAXARGS) { 1195 1196 /* skip any white space */ 1197 while (isblank(*line)) 1198 ++line; 1199 1200 if (*line == '\0') { /* end of line, no more args */ 1201 argv[nargs] = NULL; 1202 #ifdef DEBUG_PARSER 1203 printf ("parse_line: nargs=%d\n", nargs); 1204 #endif 1205 return (nargs); 1206 } 1207 1208 argv[nargs++] = line; /* begin of argument string */ 1209 1210 /* find end of string */ 1211 while (*line && !isblank(*line)) 1212 ++line; 1213 1214 if (*line == '\0') { /* end of line, no more args */ 1215 argv[nargs] = NULL; 1216 #ifdef DEBUG_PARSER 1217 printf ("parse_line: nargs=%d\n", nargs); 1218 #endif 1219 return (nargs); 1220 } 1221 1222 *line++ = '\0'; /* terminate current arg */ 1223 } 1224 1225 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS); 1226 1227 #ifdef DEBUG_PARSER 1228 printf ("parse_line: nargs=%d\n", nargs); 1229 #endif 1230 return (nargs); 1231 } 1232 1233 /****************************************************************************/ 1234 1235 #ifndef CONFIG_SYS_HUSH_PARSER 1236 static void process_macros (const char *input, char *output) 1237 { 1238 char c, prev; 1239 const char *varname_start = NULL; 1240 int inputcnt = strlen (input); 1241 int outputcnt = CONFIG_SYS_CBSIZE; 1242 int state = 0; /* 0 = waiting for '$' */ 1243 1244 /* 1 = waiting for '(' or '{' */ 1245 /* 2 = waiting for ')' or '}' */ 1246 /* 3 = waiting for ''' */ 1247 #ifdef DEBUG_PARSER 1248 char *output_start = output; 1249 1250 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), 1251 input); 1252 #endif 1253 1254 prev = '\0'; /* previous character */ 1255 1256 while (inputcnt && outputcnt) { 1257 c = *input++; 1258 inputcnt--; 1259 1260 if (state != 3) { 1261 /* remove one level of escape characters */ 1262 if ((c == '\\') && (prev != '\\')) { 1263 if (inputcnt-- == 0) 1264 break; 1265 prev = c; 1266 c = *input++; 1267 } 1268 } 1269 1270 switch (state) { 1271 case 0: /* Waiting for (unescaped) $ */ 1272 if ((c == '\'') && (prev != '\\')) { 1273 state = 3; 1274 break; 1275 } 1276 if ((c == '$') && (prev != '\\')) { 1277 state++; 1278 } else { 1279 *(output++) = c; 1280 outputcnt--; 1281 } 1282 break; 1283 case 1: /* Waiting for ( */ 1284 if (c == '(' || c == '{') { 1285 state++; 1286 varname_start = input; 1287 } else { 1288 state = 0; 1289 *(output++) = '$'; 1290 outputcnt--; 1291 1292 if (outputcnt) { 1293 *(output++) = c; 1294 outputcnt--; 1295 } 1296 } 1297 break; 1298 case 2: /* Waiting for ) */ 1299 if (c == ')' || c == '}') { 1300 int i; 1301 char envname[CONFIG_SYS_CBSIZE], *envval; 1302 int envcnt = input - varname_start - 1; /* Varname # of chars */ 1303 1304 /* Get the varname */ 1305 for (i = 0; i < envcnt; i++) { 1306 envname[i] = varname_start[i]; 1307 } 1308 envname[i] = 0; 1309 1310 /* Get its value */ 1311 envval = getenv (envname); 1312 1313 /* Copy into the line if it exists */ 1314 if (envval != NULL) 1315 while ((*envval) && outputcnt) { 1316 *(output++) = *(envval++); 1317 outputcnt--; 1318 } 1319 /* Look for another '$' */ 1320 state = 0; 1321 } 1322 break; 1323 case 3: /* Waiting for ' */ 1324 if ((c == '\'') && (prev != '\\')) { 1325 state = 0; 1326 } else { 1327 *(output++) = c; 1328 outputcnt--; 1329 } 1330 break; 1331 } 1332 prev = c; 1333 } 1334 1335 if (outputcnt) 1336 *output = 0; 1337 else 1338 *(output - 1) = 0; 1339 1340 #ifdef DEBUG_PARSER 1341 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 1342 strlen (output_start), output_start); 1343 #endif 1344 } 1345 1346 /**************************************************************************** 1347 * returns: 1348 * 1 - command executed, repeatable 1349 * 0 - command executed but not repeatable, interrupted commands are 1350 * always considered not repeatable 1351 * -1 - not executed (unrecognized, bootd recursion or too many args) 1352 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is 1353 * considered unrecognized) 1354 * 1355 * WARNING: 1356 * 1357 * We must create a temporary copy of the command since the command we get 1358 * may be the result from getenv(), which returns a pointer directly to 1359 * the environment data, which may change magicly when the command we run 1360 * creates or modifies environment variables (like "bootp" does). 1361 */ 1362 static int builtin_run_command(const char *cmd, int flag) 1363 { 1364 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */ 1365 char *token; /* start of token in cmdbuf */ 1366 char *sep; /* end of token (separator) in cmdbuf */ 1367 char finaltoken[CONFIG_SYS_CBSIZE]; 1368 char *str = cmdbuf; 1369 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 1370 int argc, inquotes; 1371 int repeatable = 1; 1372 int rc = 0; 1373 1374 #ifdef DEBUG_PARSER 1375 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 1376 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 1377 puts ("\"\n"); 1378 #endif 1379 1380 clear_ctrlc(); /* forget any previous Control C */ 1381 1382 if (!cmd || !*cmd) { 1383 return -1; /* empty command */ 1384 } 1385 1386 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) { 1387 puts ("## Command too long!\n"); 1388 return -1; 1389 } 1390 1391 strcpy (cmdbuf, cmd); 1392 1393 /* Process separators and check for invalid 1394 * repeatable commands 1395 */ 1396 1397 #ifdef DEBUG_PARSER 1398 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 1399 #endif 1400 while (*str) { 1401 1402 /* 1403 * Find separator, or string end 1404 * Allow simple escape of ';' by writing "\;" 1405 */ 1406 for (inquotes = 0, sep = str; *sep; sep++) { 1407 if ((*sep=='\'') && 1408 (*(sep-1) != '\\')) 1409 inquotes=!inquotes; 1410 1411 if (!inquotes && 1412 (*sep == ';') && /* separator */ 1413 ( sep != str) && /* past string start */ 1414 (*(sep-1) != '\\')) /* and NOT escaped */ 1415 break; 1416 } 1417 1418 /* 1419 * Limit the token to data between separators 1420 */ 1421 token = str; 1422 if (*sep) { 1423 str = sep + 1; /* start of command for next pass */ 1424 *sep = '\0'; 1425 } 1426 else 1427 str = sep; /* no more commands for next pass */ 1428 #ifdef DEBUG_PARSER 1429 printf ("token: \"%s\"\n", token); 1430 #endif 1431 1432 /* find macros in this token and replace them */ 1433 process_macros (token, finaltoken); 1434 1435 /* Extract arguments */ 1436 if ((argc = parse_line (finaltoken, argv)) == 0) { 1437 rc = -1; /* no command at all */ 1438 continue; 1439 } 1440 1441 if (cmd_process(flag, argc, argv, &repeatable, NULL)) 1442 rc = -1; 1443 1444 /* Did the user stop this? */ 1445 if (had_ctrlc ()) 1446 return -1; /* if stopped then not repeatable */ 1447 } 1448 1449 return rc ? rc : repeatable; 1450 } 1451 #endif 1452 1453 /* 1454 * Run a command using the selected parser. 1455 * 1456 * @param cmd Command to run 1457 * @param flag Execution flags (CMD_FLAG_...) 1458 * @return 0 on success, or != 0 on error. 1459 */ 1460 int run_command(const char *cmd, int flag) 1461 { 1462 #ifndef CONFIG_SYS_HUSH_PARSER 1463 /* 1464 * builtin_run_command can return 0 or 1 for success, so clean up 1465 * its result. 1466 */ 1467 if (builtin_run_command(cmd, flag) == -1) 1468 return 1; 1469 1470 return 0; 1471 #else 1472 return parse_string_outer(cmd, 1473 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); 1474 #endif 1475 } 1476 1477 #ifndef CONFIG_SYS_HUSH_PARSER 1478 /** 1479 * Execute a list of command separated by ; or \n using the built-in parser. 1480 * 1481 * This function cannot take a const char * for the command, since if it 1482 * finds newlines in the string, it replaces them with \0. 1483 * 1484 * @param cmd String containing list of commands 1485 * @param flag Execution flags (CMD_FLAG_...) 1486 * @return 0 on success, or != 0 on error. 1487 */ 1488 static int builtin_run_command_list(char *cmd, int flag) 1489 { 1490 char *line, *next; 1491 int rcode = 0; 1492 1493 /* 1494 * Break into individual lines, and execute each line; terminate on 1495 * error. 1496 */ 1497 line = next = cmd; 1498 while (*next) { 1499 if (*next == '\n') { 1500 *next = '\0'; 1501 /* run only non-empty commands */ 1502 if (*line) { 1503 debug("** exec: \"%s\"\n", line); 1504 if (builtin_run_command(line, 0) < 0) { 1505 rcode = 1; 1506 break; 1507 } 1508 } 1509 line = next + 1; 1510 } 1511 ++next; 1512 } 1513 if (rcode == 0 && *line) 1514 rcode = (builtin_run_command(line, 0) >= 0); 1515 1516 return rcode; 1517 } 1518 #endif 1519 1520 int run_command_list(const char *cmd, int len, int flag) 1521 { 1522 int need_buff = 1; 1523 char *buff = (char *)cmd; /* cast away const */ 1524 int rcode = 0; 1525 1526 if (len == -1) { 1527 len = strlen(cmd); 1528 #ifdef CONFIG_SYS_HUSH_PARSER 1529 /* hush will never change our string */ 1530 need_buff = 0; 1531 #else 1532 /* the built-in parser will change our string if it sees \n */ 1533 need_buff = strchr(cmd, '\n') != NULL; 1534 #endif 1535 } 1536 if (need_buff) { 1537 buff = malloc(len + 1); 1538 if (!buff) 1539 return 1; 1540 memcpy(buff, cmd, len); 1541 buff[len] = '\0'; 1542 } 1543 #ifdef CONFIG_SYS_HUSH_PARSER 1544 rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON); 1545 #else 1546 /* 1547 * This function will overwrite any \n it sees with a \0, which 1548 * is why it can't work with a const char *. Here we are making 1549 * using of internal knowledge of this function, to avoid always 1550 * doing a malloc() which is actually required only in a case that 1551 * is pretty rare. 1552 */ 1553 rcode = builtin_run_command_list(buff, flag); 1554 if (need_buff) 1555 free(buff); 1556 #endif 1557 1558 return rcode; 1559 } 1560 1561 /****************************************************************************/ 1562 1563 #if defined(CONFIG_CMD_RUN) 1564 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 1565 { 1566 int i; 1567 1568 if (argc < 2) 1569 return CMD_RET_USAGE; 1570 1571 for (i=1; i<argc; ++i) { 1572 char *arg; 1573 1574 if ((arg = getenv (argv[i])) == NULL) { 1575 printf ("## Error: \"%s\" not defined\n", argv[i]); 1576 return 1; 1577 } 1578 1579 if (run_command(arg, flag) != 0) 1580 return 1; 1581 } 1582 return 0; 1583 } 1584 #endif 1585