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 static int abortboot_keyed(int bootdelay) 93 { 94 int abort = 0; 95 uint64_t etime = endtick(bootdelay); 96 struct { 97 char* str; 98 u_int len; 99 int retry; 100 } 101 delaykey [] = { 102 { str: getenv ("bootdelaykey"), retry: 1 }, 103 { str: getenv ("bootdelaykey2"), retry: 1 }, 104 { str: getenv ("bootstopkey"), retry: 0 }, 105 { str: getenv ("bootstopkey2"), retry: 0 }, 106 }; 107 108 char presskey [MAX_DELAY_STOP_STR]; 109 u_int presskey_len = 0; 110 u_int presskey_max = 0; 111 u_int i; 112 113 #ifndef CONFIG_ZERO_BOOTDELAY_CHECK 114 if (bootdelay == 0) 115 return 0; 116 #endif 117 118 # ifdef CONFIG_AUTOBOOT_PROMPT 119 printf(CONFIG_AUTOBOOT_PROMPT); 120 # endif 121 122 # ifdef CONFIG_AUTOBOOT_DELAY_STR 123 if (delaykey[0].str == NULL) 124 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 125 # endif 126 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 127 if (delaykey[1].str == NULL) 128 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 129 # endif 130 # ifdef CONFIG_AUTOBOOT_STOP_STR 131 if (delaykey[2].str == NULL) 132 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 133 # endif 134 # ifdef CONFIG_AUTOBOOT_STOP_STR2 135 if (delaykey[3].str == NULL) 136 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 137 # endif 138 139 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 140 delaykey[i].len = delaykey[i].str == NULL ? 141 0 : strlen (delaykey[i].str); 142 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 143 MAX_DELAY_STOP_STR : delaykey[i].len; 144 145 presskey_max = presskey_max > delaykey[i].len ? 146 presskey_max : delaykey[i].len; 147 148 # if DEBUG_BOOTKEYS 149 printf("%s key:<%s>\n", 150 delaykey[i].retry ? "delay" : "stop", 151 delaykey[i].str ? delaykey[i].str : "NULL"); 152 # endif 153 } 154 155 /* In order to keep up with incoming data, check timeout only 156 * when catch up. 157 */ 158 do { 159 if (tstc()) { 160 if (presskey_len < presskey_max) { 161 presskey [presskey_len ++] = getc(); 162 } 163 else { 164 for (i = 0; i < presskey_max - 1; i ++) 165 presskey [i] = presskey [i + 1]; 166 167 presskey [i] = getc(); 168 } 169 } 170 171 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 172 if (delaykey[i].len > 0 && 173 presskey_len >= delaykey[i].len && 174 memcmp (presskey + presskey_len - delaykey[i].len, 175 delaykey[i].str, 176 delaykey[i].len) == 0) { 177 # if DEBUG_BOOTKEYS 178 printf("got %skey\n", 179 delaykey[i].retry ? "delay" : "stop"); 180 # endif 181 182 # ifdef CONFIG_BOOT_RETRY_TIME 183 /* don't retry auto boot */ 184 if (! delaykey[i].retry) 185 retry_time = -1; 186 # endif 187 abort = 1; 188 } 189 } 190 } while (!abort && get_ticks() <= etime); 191 192 # if DEBUG_BOOTKEYS 193 if (!abort) 194 puts("key timeout\n"); 195 # endif 196 197 #ifdef CONFIG_SILENT_CONSOLE 198 if (abort) 199 gd->flags &= ~GD_FLG_SILENT; 200 #endif 201 202 return abort; 203 } 204 205 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 206 207 #ifdef CONFIG_MENUKEY 208 static int menukey = 0; 209 #endif 210 211 static int abortboot_normal(int bootdelay) 212 { 213 int abort = 0; 214 unsigned long ts; 215 216 #ifdef CONFIG_MENUPROMPT 217 printf(CONFIG_MENUPROMPT); 218 #else 219 if (bootdelay >= 0) 220 printf("Hit any key to stop autoboot: %2d ", bootdelay); 221 #endif 222 223 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 224 /* 225 * Check if key already pressed 226 * Don't check if bootdelay < 0 227 */ 228 if (bootdelay >= 0) { 229 if (tstc()) { /* we got a key press */ 230 (void) getc(); /* consume input */ 231 puts ("\b\b\b 0"); 232 abort = 1; /* don't auto boot */ 233 } 234 } 235 #endif 236 237 while ((bootdelay > 0) && (!abort)) { 238 --bootdelay; 239 /* delay 1000 ms */ 240 ts = get_timer(0); 241 do { 242 if (tstc()) { /* we got a key press */ 243 abort = 1; /* don't auto boot */ 244 bootdelay = 0; /* no more delay */ 245 # ifdef CONFIG_MENUKEY 246 menukey = getc(); 247 # else 248 (void) getc(); /* consume input */ 249 # endif 250 break; 251 } 252 udelay(10000); 253 } while (!abort && get_timer(ts) < 1000); 254 255 printf("\b\b\b%2d ", bootdelay); 256 } 257 258 putc('\n'); 259 260 #ifdef CONFIG_SILENT_CONSOLE 261 if (abort) 262 gd->flags &= ~GD_FLG_SILENT; 263 #endif 264 265 return abort; 266 } 267 # endif /* CONFIG_AUTOBOOT_KEYED */ 268 269 static int abortboot(int bootdelay) 270 { 271 #ifdef CONFIG_AUTOBOOT_KEYED 272 return abortboot_keyed(bootdelay); 273 #else 274 return abortboot_normal(bootdelay); 275 #endif 276 } 277 #endif /* CONFIG_BOOTDELAY */ 278 279 /* 280 * Runs the given boot command securely. Specifically: 281 * - Doesn't run the command with the shell (run_command or parse_string_outer), 282 * since that's a lot of code surface that an attacker might exploit. 283 * Because of this, we don't do any argument parsing--the secure boot command 284 * has to be a full-fledged u-boot command. 285 * - Doesn't check for keypresses before booting, since that could be a 286 * security hole; also disables Ctrl-C. 287 * - Doesn't allow the command to return. 288 * 289 * Upon any failures, this function will drop into an infinite loop after 290 * printing the error message to console. 291 */ 292 293 #if defined(CONFIG_BOOTDELAY) && defined(CONFIG_OF_CONTROL) 294 static void secure_boot_cmd(char *cmd) 295 { 296 cmd_tbl_t *cmdtp; 297 int rc; 298 299 if (!cmd) { 300 printf("## Error: Secure boot command not specified\n"); 301 goto err; 302 } 303 304 /* Disable Ctrl-C just in case some command is used that checks it. */ 305 disable_ctrlc(1); 306 307 /* Find the command directly. */ 308 cmdtp = find_cmd(cmd); 309 if (!cmdtp) { 310 printf("## Error: \"%s\" not defined\n", cmd); 311 goto err; 312 } 313 314 /* Run the command, forcing no flags and faking argc and argv. */ 315 rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd); 316 317 /* Shouldn't ever return from boot command. */ 318 printf("## Error: \"%s\" returned (code %d)\n", cmd, rc); 319 320 err: 321 /* 322 * Not a whole lot to do here. Rebooting won't help much, since we'll 323 * just end up right back here. Just loop. 324 */ 325 hang(); 326 } 327 328 static void process_fdt_options(const void *blob) 329 { 330 ulong addr; 331 332 /* Add an env variable to point to a kernel payload, if available */ 333 addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); 334 if (addr) 335 setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 336 337 /* Add an env variable to point to a root disk, if available */ 338 addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); 339 if (addr) 340 setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 341 } 342 #endif /* CONFIG_OF_CONTROL */ 343 344 #ifdef CONFIG_BOOTDELAY 345 static void process_boot_delay(void) 346 { 347 #ifdef CONFIG_OF_CONTROL 348 char *env; 349 #endif 350 char *s; 351 int bootdelay; 352 #ifdef CONFIG_BOOTCOUNT_LIMIT 353 unsigned long bootcount = 0; 354 unsigned long bootlimit = 0; 355 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 356 357 #ifdef CONFIG_BOOTCOUNT_LIMIT 358 bootcount = bootcount_load(); 359 bootcount++; 360 bootcount_store (bootcount); 361 setenv_ulong("bootcount", bootcount); 362 bootlimit = getenv_ulong("bootlimit", 10, 0); 363 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 364 365 s = getenv ("bootdelay"); 366 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 367 368 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 369 370 #if defined(CONFIG_MENU_SHOW) 371 bootdelay = menu_show(bootdelay); 372 #endif 373 # ifdef CONFIG_BOOT_RETRY_TIME 374 init_cmd_timeout (); 375 # endif /* CONFIG_BOOT_RETRY_TIME */ 376 377 #ifdef CONFIG_POST 378 if (gd->flags & GD_FLG_POSTFAIL) { 379 s = getenv("failbootcmd"); 380 } 381 else 382 #endif /* CONFIG_POST */ 383 #ifdef CONFIG_BOOTCOUNT_LIMIT 384 if (bootlimit && (bootcount > bootlimit)) { 385 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", 386 (unsigned)bootlimit); 387 s = getenv ("altbootcmd"); 388 } 389 else 390 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 391 s = getenv ("bootcmd"); 392 #ifdef CONFIG_OF_CONTROL 393 /* Allow the fdt to override the boot command */ 394 env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd"); 395 if (env) 396 s = env; 397 398 process_fdt_options(gd->fdt_blob); 399 400 /* 401 * If the bootsecure option was chosen, use secure_boot_cmd(). 402 * Always use 'env' in this case, since bootsecure requres that the 403 * bootcmd was specified in the FDT too. 404 */ 405 if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0)) 406 secure_boot_cmd(env); 407 408 #endif /* CONFIG_OF_CONTROL */ 409 410 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 411 412 if (bootdelay != -1 && s && !abortboot(bootdelay)) { 413 #ifdef CONFIG_AUTOBOOT_KEYED 414 int prev = disable_ctrlc(1); /* disable Control C checking */ 415 #endif 416 417 run_command_list(s, -1, 0); 418 419 #ifdef CONFIG_AUTOBOOT_KEYED 420 disable_ctrlc(prev); /* restore Control C checking */ 421 #endif 422 } 423 424 #ifdef CONFIG_MENUKEY 425 if (menukey == CONFIG_MENUKEY) { 426 s = getenv("menucmd"); 427 if (s) 428 run_command_list(s, -1, 0); 429 } 430 #endif /* CONFIG_MENUKEY */ 431 } 432 #endif /* CONFIG_BOOTDELAY */ 433 434 void main_loop(void) 435 { 436 #ifndef CONFIG_SYS_HUSH_PARSER 437 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, }; 438 int len; 439 int rc = 1; 440 int flag; 441 #endif 442 #ifdef CONFIG_PREBOOT 443 char *p; 444 #endif 445 446 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 447 448 #ifdef CONFIG_MODEM_SUPPORT 449 debug("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 450 if (do_mdm_init) { 451 char *str = strdup(getenv("mdm_cmd")); 452 setenv("preboot", str); /* set or delete definition */ 453 if (str != NULL) 454 free(str); 455 mdm_init(); /* wait for modem connection */ 456 } 457 #endif /* CONFIG_MODEM_SUPPORT */ 458 459 #ifdef CONFIG_VERSION_VARIABLE 460 { 461 setenv("ver", version_string); /* set version variable */ 462 } 463 #endif /* CONFIG_VERSION_VARIABLE */ 464 465 #ifdef CONFIG_SYS_HUSH_PARSER 466 u_boot_hush_start(); 467 #endif 468 469 #if defined(CONFIG_HUSH_INIT_VAR) 470 hush_init_var(); 471 #endif 472 473 #ifdef CONFIG_PREBOOT 474 p = getenv("preboot"); 475 if (p != NULL) { 476 # ifdef CONFIG_AUTOBOOT_KEYED 477 int prev = disable_ctrlc(1); /* disable Control C checking */ 478 # endif 479 480 run_command_list(p, -1, 0); 481 482 # ifdef CONFIG_AUTOBOOT_KEYED 483 disable_ctrlc(prev); /* restore Control C checking */ 484 # endif 485 } 486 #endif /* CONFIG_PREBOOT */ 487 488 #if defined(CONFIG_UPDATE_TFTP) 489 update_tftp(0UL); 490 #endif /* CONFIG_UPDATE_TFTP */ 491 492 #ifdef CONFIG_BOOTDELAY 493 process_boot_delay(); 494 #endif 495 /* 496 * Main Loop for Monitor Command Processing 497 */ 498 #ifdef CONFIG_SYS_HUSH_PARSER 499 parse_file_outer(); 500 /* This point is never reached */ 501 for (;;); 502 #else 503 for (;;) { 504 #ifdef CONFIG_BOOT_RETRY_TIME 505 if (rc >= 0) { 506 /* Saw enough of a valid command to 507 * restart the timeout. 508 */ 509 reset_cmd_timeout(); 510 } 511 #endif 512 len = readline (CONFIG_SYS_PROMPT); 513 514 flag = 0; /* assume no special flags for now */ 515 if (len > 0) 516 strcpy (lastcommand, console_buffer); 517 else if (len == 0) 518 flag |= CMD_FLAG_REPEAT; 519 #ifdef CONFIG_BOOT_RETRY_TIME 520 else if (len == -2) { 521 /* -2 means timed out, retry autoboot 522 */ 523 puts ("\nTimed out waiting for command\n"); 524 # ifdef CONFIG_RESET_TO_RETRY 525 /* Reinit board to run initialization code again */ 526 do_reset (NULL, 0, 0, NULL); 527 # else 528 return; /* retry autoboot */ 529 # endif 530 } 531 #endif 532 533 if (len == -1) 534 puts ("<INTERRUPT>\n"); 535 else 536 rc = run_command(lastcommand, flag); 537 538 if (rc <= 0) { 539 /* invalid command or not repeatable, forget it */ 540 lastcommand[0] = 0; 541 } 542 } 543 #endif /*CONFIG_SYS_HUSH_PARSER*/ 544 } 545 546 #ifdef CONFIG_BOOT_RETRY_TIME 547 /*************************************************************************** 548 * initialize command line timeout 549 */ 550 void init_cmd_timeout(void) 551 { 552 char *s = getenv ("bootretry"); 553 554 if (s != NULL) 555 retry_time = (int)simple_strtol(s, NULL, 10); 556 else 557 retry_time = CONFIG_BOOT_RETRY_TIME; 558 559 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 560 retry_time = CONFIG_BOOT_RETRY_MIN; 561 } 562 563 /*************************************************************************** 564 * reset command line timeout to retry_time seconds 565 */ 566 void reset_cmd_timeout(void) 567 { 568 endtime = endtick(retry_time); 569 } 570 #endif 571 572 #ifdef CONFIG_CMDLINE_EDITING 573 574 /* 575 * cmdline-editing related codes from vivi. 576 * Author: Janghoon Lyu <nandy@mizi.com> 577 */ 578 579 #define putnstr(str,n) do { \ 580 printf ("%.*s", (int)n, str); \ 581 } while (0) 582 583 #define CTL_CH(c) ((c) - 'a' + 1) 584 #define CTL_BACKSPACE ('\b') 585 #define DEL ((char)255) 586 #define DEL7 ((char)127) 587 #define CREAD_HIST_CHAR ('!') 588 589 #define getcmd_putch(ch) putc(ch) 590 #define getcmd_getch() getc() 591 #define getcmd_cbeep() getcmd_putch('\a') 592 593 #define HIST_MAX 20 594 #define HIST_SIZE CONFIG_SYS_CBSIZE 595 596 static int hist_max; 597 static int hist_add_idx; 598 static int hist_cur = -1; 599 static unsigned hist_num; 600 601 static char *hist_list[HIST_MAX]; 602 static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ 603 604 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) 605 606 static void hist_init(void) 607 { 608 int i; 609 610 hist_max = 0; 611 hist_add_idx = 0; 612 hist_cur = -1; 613 hist_num = 0; 614 615 for (i = 0; i < HIST_MAX; i++) { 616 hist_list[i] = hist_lines[i]; 617 hist_list[i][0] = '\0'; 618 } 619 } 620 621 static void cread_add_to_hist(char *line) 622 { 623 strcpy(hist_list[hist_add_idx], line); 624 625 if (++hist_add_idx >= HIST_MAX) 626 hist_add_idx = 0; 627 628 if (hist_add_idx > hist_max) 629 hist_max = hist_add_idx; 630 631 hist_num++; 632 } 633 634 static char* hist_prev(void) 635 { 636 char *ret; 637 int old_cur; 638 639 if (hist_cur < 0) 640 return NULL; 641 642 old_cur = hist_cur; 643 if (--hist_cur < 0) 644 hist_cur = hist_max; 645 646 if (hist_cur == hist_add_idx) { 647 hist_cur = old_cur; 648 ret = NULL; 649 } else 650 ret = hist_list[hist_cur]; 651 652 return (ret); 653 } 654 655 static char* hist_next(void) 656 { 657 char *ret; 658 659 if (hist_cur < 0) 660 return NULL; 661 662 if (hist_cur == hist_add_idx) 663 return NULL; 664 665 if (++hist_cur > hist_max) 666 hist_cur = 0; 667 668 if (hist_cur == hist_add_idx) { 669 ret = ""; 670 } else 671 ret = hist_list[hist_cur]; 672 673 return (ret); 674 } 675 676 #ifndef CONFIG_CMDLINE_EDITING 677 static void cread_print_hist_list(void) 678 { 679 int i; 680 unsigned long n; 681 682 n = hist_num - hist_max; 683 684 i = hist_add_idx + 1; 685 while (1) { 686 if (i > hist_max) 687 i = 0; 688 if (i == hist_add_idx) 689 break; 690 printf("%s\n", hist_list[i]); 691 n++; 692 i++; 693 } 694 } 695 #endif /* CONFIG_CMDLINE_EDITING */ 696 697 #define BEGINNING_OF_LINE() { \ 698 while (num) { \ 699 getcmd_putch(CTL_BACKSPACE); \ 700 num--; \ 701 } \ 702 } 703 704 #define ERASE_TO_EOL() { \ 705 if (num < eol_num) { \ 706 printf("%*s", (int)(eol_num - num), ""); \ 707 do { \ 708 getcmd_putch(CTL_BACKSPACE); \ 709 } while (--eol_num > num); \ 710 } \ 711 } 712 713 #define REFRESH_TO_EOL() { \ 714 if (num < eol_num) { \ 715 wlen = eol_num - num; \ 716 putnstr(buf + num, wlen); \ 717 num = eol_num; \ 718 } \ 719 } 720 721 static void cread_add_char(char ichar, int insert, unsigned long *num, 722 unsigned long *eol_num, char *buf, unsigned long len) 723 { 724 unsigned long wlen; 725 726 /* room ??? */ 727 if (insert || *num == *eol_num) { 728 if (*eol_num > len - 1) { 729 getcmd_cbeep(); 730 return; 731 } 732 (*eol_num)++; 733 } 734 735 if (insert) { 736 wlen = *eol_num - *num; 737 if (wlen > 1) { 738 memmove(&buf[*num+1], &buf[*num], wlen-1); 739 } 740 741 buf[*num] = ichar; 742 putnstr(buf + *num, wlen); 743 (*num)++; 744 while (--wlen) { 745 getcmd_putch(CTL_BACKSPACE); 746 } 747 } else { 748 /* echo the character */ 749 wlen = 1; 750 buf[*num] = ichar; 751 putnstr(buf + *num, wlen); 752 (*num)++; 753 } 754 } 755 756 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, 757 unsigned long *eol_num, char *buf, unsigned long len) 758 { 759 while (strsize--) { 760 cread_add_char(*str, insert, num, eol_num, buf, len); 761 str++; 762 } 763 } 764 765 static int cread_line(const char *const prompt, char *buf, unsigned int *len, 766 int timeout) 767 { 768 unsigned long num = 0; 769 unsigned long eol_num = 0; 770 unsigned long wlen; 771 char ichar; 772 int insert = 1; 773 int esc_len = 0; 774 char esc_save[8]; 775 int init_len = strlen(buf); 776 int first = 1; 777 778 if (init_len) 779 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); 780 781 while (1) { 782 #ifdef CONFIG_BOOT_RETRY_TIME 783 while (!tstc()) { /* while no incoming data */ 784 if (retry_time >= 0 && get_ticks() > endtime) 785 return (-2); /* timed out */ 786 WATCHDOG_RESET(); 787 } 788 #endif 789 if (first && timeout) { 790 uint64_t etime = endtick(timeout); 791 792 while (!tstc()) { /* while no incoming data */ 793 if (get_ticks() >= etime) 794 return -2; /* timed out */ 795 WATCHDOG_RESET(); 796 } 797 first = 0; 798 } 799 800 ichar = getcmd_getch(); 801 802 if ((ichar == '\n') || (ichar == '\r')) { 803 putc('\n'); 804 break; 805 } 806 807 /* 808 * handle standard linux xterm esc sequences for arrow key, etc. 809 */ 810 if (esc_len != 0) { 811 if (esc_len == 1) { 812 if (ichar == '[') { 813 esc_save[esc_len] = ichar; 814 esc_len = 2; 815 } else { 816 cread_add_str(esc_save, esc_len, insert, 817 &num, &eol_num, buf, *len); 818 esc_len = 0; 819 } 820 continue; 821 } 822 823 switch (ichar) { 824 825 case 'D': /* <- key */ 826 ichar = CTL_CH('b'); 827 esc_len = 0; 828 break; 829 case 'C': /* -> key */ 830 ichar = CTL_CH('f'); 831 esc_len = 0; 832 break; /* pass off to ^F handler */ 833 case 'H': /* Home key */ 834 ichar = CTL_CH('a'); 835 esc_len = 0; 836 break; /* pass off to ^A handler */ 837 case 'A': /* up arrow */ 838 ichar = CTL_CH('p'); 839 esc_len = 0; 840 break; /* pass off to ^P handler */ 841 case 'B': /* down arrow */ 842 ichar = CTL_CH('n'); 843 esc_len = 0; 844 break; /* pass off to ^N handler */ 845 default: 846 esc_save[esc_len++] = ichar; 847 cread_add_str(esc_save, esc_len, insert, 848 &num, &eol_num, buf, *len); 849 esc_len = 0; 850 continue; 851 } 852 } 853 854 switch (ichar) { 855 case 0x1b: 856 if (esc_len == 0) { 857 esc_save[esc_len] = ichar; 858 esc_len = 1; 859 } else { 860 puts("impossible condition #876\n"); 861 esc_len = 0; 862 } 863 break; 864 865 case CTL_CH('a'): 866 BEGINNING_OF_LINE(); 867 break; 868 case CTL_CH('c'): /* ^C - break */ 869 *buf = '\0'; /* discard input */ 870 return (-1); 871 case CTL_CH('f'): 872 if (num < eol_num) { 873 getcmd_putch(buf[num]); 874 num++; 875 } 876 break; 877 case CTL_CH('b'): 878 if (num) { 879 getcmd_putch(CTL_BACKSPACE); 880 num--; 881 } 882 break; 883 case CTL_CH('d'): 884 if (num < eol_num) { 885 wlen = eol_num - num - 1; 886 if (wlen) { 887 memmove(&buf[num], &buf[num+1], wlen); 888 putnstr(buf + num, wlen); 889 } 890 891 getcmd_putch(' '); 892 do { 893 getcmd_putch(CTL_BACKSPACE); 894 } while (wlen--); 895 eol_num--; 896 } 897 break; 898 case CTL_CH('k'): 899 ERASE_TO_EOL(); 900 break; 901 case CTL_CH('e'): 902 REFRESH_TO_EOL(); 903 break; 904 case CTL_CH('o'): 905 insert = !insert; 906 break; 907 case CTL_CH('x'): 908 case CTL_CH('u'): 909 BEGINNING_OF_LINE(); 910 ERASE_TO_EOL(); 911 break; 912 case DEL: 913 case DEL7: 914 case 8: 915 if (num) { 916 wlen = eol_num - num; 917 num--; 918 memmove(&buf[num], &buf[num+1], wlen); 919 getcmd_putch(CTL_BACKSPACE); 920 putnstr(buf + num, wlen); 921 getcmd_putch(' '); 922 do { 923 getcmd_putch(CTL_BACKSPACE); 924 } while (wlen--); 925 eol_num--; 926 } 927 break; 928 case CTL_CH('p'): 929 case CTL_CH('n'): 930 { 931 char * hline; 932 933 esc_len = 0; 934 935 if (ichar == CTL_CH('p')) 936 hline = hist_prev(); 937 else 938 hline = hist_next(); 939 940 if (!hline) { 941 getcmd_cbeep(); 942 continue; 943 } 944 945 /* nuke the current line */ 946 /* first, go home */ 947 BEGINNING_OF_LINE(); 948 949 /* erase to end of line */ 950 ERASE_TO_EOL(); 951 952 /* copy new line into place and display */ 953 strcpy(buf, hline); 954 eol_num = strlen(buf); 955 REFRESH_TO_EOL(); 956 continue; 957 } 958 #ifdef CONFIG_AUTO_COMPLETE 959 case '\t': { 960 int num2, col; 961 962 /* do not autocomplete when in the middle */ 963 if (num < eol_num) { 964 getcmd_cbeep(); 965 break; 966 } 967 968 buf[num] = '\0'; 969 col = strlen(prompt) + eol_num; 970 num2 = num; 971 if (cmd_auto_complete(prompt, buf, &num2, &col)) { 972 col = num2 - num; 973 num += col; 974 eol_num += col; 975 } 976 break; 977 } 978 #endif 979 default: 980 cread_add_char(ichar, insert, &num, &eol_num, buf, *len); 981 break; 982 } 983 } 984 *len = eol_num; 985 buf[eol_num] = '\0'; /* lose the newline */ 986 987 if (buf[0] && buf[0] != CREAD_HIST_CHAR) 988 cread_add_to_hist(buf); 989 hist_cur = hist_add_idx; 990 991 return 0; 992 } 993 994 #endif /* CONFIG_CMDLINE_EDITING */ 995 996 /****************************************************************************/ 997 998 /* 999 * Prompt for input and read a line. 1000 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 1001 * time out when time goes past endtime (timebase time in ticks). 1002 * Return: number of read characters 1003 * -1 if break 1004 * -2 if timed out 1005 */ 1006 int readline (const char *const prompt) 1007 { 1008 /* 1009 * If console_buffer isn't 0-length the user will be prompted to modify 1010 * it instead of entering it from scratch as desired. 1011 */ 1012 console_buffer[0] = '\0'; 1013 1014 return readline_into_buffer(prompt, console_buffer, 0); 1015 } 1016 1017 1018 int readline_into_buffer(const char *const prompt, char *buffer, int timeout) 1019 { 1020 char *p = buffer; 1021 #ifdef CONFIG_CMDLINE_EDITING 1022 unsigned int len = CONFIG_SYS_CBSIZE; 1023 int rc; 1024 static int initted = 0; 1025 1026 /* 1027 * History uses a global array which is not 1028 * writable until after relocation to RAM. 1029 * Revert to non-history version if still 1030 * running from flash. 1031 */ 1032 if (gd->flags & GD_FLG_RELOC) { 1033 if (!initted) { 1034 hist_init(); 1035 initted = 1; 1036 } 1037 1038 if (prompt) 1039 puts (prompt); 1040 1041 rc = cread_line(prompt, p, &len, timeout); 1042 return rc < 0 ? rc : len; 1043 1044 } else { 1045 #endif /* CONFIG_CMDLINE_EDITING */ 1046 char * p_buf = p; 1047 int n = 0; /* buffer index */ 1048 int plen = 0; /* prompt length */ 1049 int col; /* output column cnt */ 1050 char c; 1051 1052 /* print prompt */ 1053 if (prompt) { 1054 plen = strlen (prompt); 1055 puts (prompt); 1056 } 1057 col = plen; 1058 1059 for (;;) { 1060 #ifdef CONFIG_BOOT_RETRY_TIME 1061 while (!tstc()) { /* while no incoming data */ 1062 if (retry_time >= 0 && get_ticks() > endtime) 1063 return (-2); /* timed out */ 1064 WATCHDOG_RESET(); 1065 } 1066 #endif 1067 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 1068 1069 #ifdef CONFIG_SHOW_ACTIVITY 1070 while (!tstc()) { 1071 show_activity(0); 1072 WATCHDOG_RESET(); 1073 } 1074 #endif 1075 c = getc(); 1076 1077 /* 1078 * Special character handling 1079 */ 1080 switch (c) { 1081 case '\r': /* Enter */ 1082 case '\n': 1083 *p = '\0'; 1084 puts ("\r\n"); 1085 return (p - p_buf); 1086 1087 case '\0': /* nul */ 1088 continue; 1089 1090 case 0x03: /* ^C - break */ 1091 p_buf[0] = '\0'; /* discard input */ 1092 return (-1); 1093 1094 case 0x15: /* ^U - erase line */ 1095 while (col > plen) { 1096 puts (erase_seq); 1097 --col; 1098 } 1099 p = p_buf; 1100 n = 0; 1101 continue; 1102 1103 case 0x17: /* ^W - erase word */ 1104 p=delete_char(p_buf, p, &col, &n, plen); 1105 while ((n > 0) && (*p != ' ')) { 1106 p=delete_char(p_buf, p, &col, &n, plen); 1107 } 1108 continue; 1109 1110 case 0x08: /* ^H - backspace */ 1111 case 0x7F: /* DEL - backspace */ 1112 p=delete_char(p_buf, p, &col, &n, plen); 1113 continue; 1114 1115 default: 1116 /* 1117 * Must be a normal character then 1118 */ 1119 if (n < CONFIG_SYS_CBSIZE-2) { 1120 if (c == '\t') { /* expand TABs */ 1121 #ifdef CONFIG_AUTO_COMPLETE 1122 /* if auto completion triggered just continue */ 1123 *p = '\0'; 1124 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { 1125 p = p_buf + n; /* reset */ 1126 continue; 1127 } 1128 #endif 1129 puts (tab_seq+(col&07)); 1130 col += 8 - (col&07); 1131 } else { 1132 char buf[2]; 1133 1134 /* 1135 * Echo input using puts() to force am 1136 * LCD flush if we are using an LCD 1137 */ 1138 ++col; 1139 buf[0] = c; 1140 buf[1] = '\0'; 1141 puts(buf); 1142 } 1143 *p++ = c; 1144 ++n; 1145 } else { /* Buffer full */ 1146 putc ('\a'); 1147 } 1148 } 1149 } 1150 #ifdef CONFIG_CMDLINE_EDITING 1151 } 1152 #endif 1153 } 1154 1155 /****************************************************************************/ 1156 1157 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 1158 { 1159 char *s; 1160 1161 if (*np == 0) { 1162 return (p); 1163 } 1164 1165 if (*(--p) == '\t') { /* will retype the whole line */ 1166 while (*colp > plen) { 1167 puts (erase_seq); 1168 (*colp)--; 1169 } 1170 for (s=buffer; s<p; ++s) { 1171 if (*s == '\t') { 1172 puts (tab_seq+((*colp) & 07)); 1173 *colp += 8 - ((*colp) & 07); 1174 } else { 1175 ++(*colp); 1176 putc (*s); 1177 } 1178 } 1179 } else { 1180 puts (erase_seq); 1181 (*colp)--; 1182 } 1183 (*np)--; 1184 return (p); 1185 } 1186 1187 /****************************************************************************/ 1188 1189 int parse_line (char *line, char *argv[]) 1190 { 1191 int nargs = 0; 1192 1193 #ifdef DEBUG_PARSER 1194 printf ("parse_line: \"%s\"\n", line); 1195 #endif 1196 while (nargs < CONFIG_SYS_MAXARGS) { 1197 1198 /* skip any white space */ 1199 while (isblank(*line)) 1200 ++line; 1201 1202 if (*line == '\0') { /* end of line, no more args */ 1203 argv[nargs] = NULL; 1204 #ifdef DEBUG_PARSER 1205 printf ("parse_line: nargs=%d\n", nargs); 1206 #endif 1207 return (nargs); 1208 } 1209 1210 argv[nargs++] = line; /* begin of argument string */ 1211 1212 /* find end of string */ 1213 while (*line && !isblank(*line)) 1214 ++line; 1215 1216 if (*line == '\0') { /* end of line, no more args */ 1217 argv[nargs] = NULL; 1218 #ifdef DEBUG_PARSER 1219 printf ("parse_line: nargs=%d\n", nargs); 1220 #endif 1221 return (nargs); 1222 } 1223 1224 *line++ = '\0'; /* terminate current arg */ 1225 } 1226 1227 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS); 1228 1229 #ifdef DEBUG_PARSER 1230 printf ("parse_line: nargs=%d\n", nargs); 1231 #endif 1232 return (nargs); 1233 } 1234 1235 /****************************************************************************/ 1236 1237 #ifndef CONFIG_SYS_HUSH_PARSER 1238 static void process_macros (const char *input, char *output) 1239 { 1240 char c, prev; 1241 const char *varname_start = NULL; 1242 int inputcnt = strlen (input); 1243 int outputcnt = CONFIG_SYS_CBSIZE; 1244 int state = 0; /* 0 = waiting for '$' */ 1245 1246 /* 1 = waiting for '(' or '{' */ 1247 /* 2 = waiting for ')' or '}' */ 1248 /* 3 = waiting for ''' */ 1249 #ifdef DEBUG_PARSER 1250 char *output_start = output; 1251 1252 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), 1253 input); 1254 #endif 1255 1256 prev = '\0'; /* previous character */ 1257 1258 while (inputcnt && outputcnt) { 1259 c = *input++; 1260 inputcnt--; 1261 1262 if (state != 3) { 1263 /* remove one level of escape characters */ 1264 if ((c == '\\') && (prev != '\\')) { 1265 if (inputcnt-- == 0) 1266 break; 1267 prev = c; 1268 c = *input++; 1269 } 1270 } 1271 1272 switch (state) { 1273 case 0: /* Waiting for (unescaped) $ */ 1274 if ((c == '\'') && (prev != '\\')) { 1275 state = 3; 1276 break; 1277 } 1278 if ((c == '$') && (prev != '\\')) { 1279 state++; 1280 } else { 1281 *(output++) = c; 1282 outputcnt--; 1283 } 1284 break; 1285 case 1: /* Waiting for ( */ 1286 if (c == '(' || c == '{') { 1287 state++; 1288 varname_start = input; 1289 } else { 1290 state = 0; 1291 *(output++) = '$'; 1292 outputcnt--; 1293 1294 if (outputcnt) { 1295 *(output++) = c; 1296 outputcnt--; 1297 } 1298 } 1299 break; 1300 case 2: /* Waiting for ) */ 1301 if (c == ')' || c == '}') { 1302 int i; 1303 char envname[CONFIG_SYS_CBSIZE], *envval; 1304 int envcnt = input - varname_start - 1; /* Varname # of chars */ 1305 1306 /* Get the varname */ 1307 for (i = 0; i < envcnt; i++) { 1308 envname[i] = varname_start[i]; 1309 } 1310 envname[i] = 0; 1311 1312 /* Get its value */ 1313 envval = getenv (envname); 1314 1315 /* Copy into the line if it exists */ 1316 if (envval != NULL) 1317 while ((*envval) && outputcnt) { 1318 *(output++) = *(envval++); 1319 outputcnt--; 1320 } 1321 /* Look for another '$' */ 1322 state = 0; 1323 } 1324 break; 1325 case 3: /* Waiting for ' */ 1326 if ((c == '\'') && (prev != '\\')) { 1327 state = 0; 1328 } else { 1329 *(output++) = c; 1330 outputcnt--; 1331 } 1332 break; 1333 } 1334 prev = c; 1335 } 1336 1337 if (outputcnt) 1338 *output = 0; 1339 else 1340 *(output - 1) = 0; 1341 1342 #ifdef DEBUG_PARSER 1343 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 1344 strlen (output_start), output_start); 1345 #endif 1346 } 1347 1348 /**************************************************************************** 1349 * returns: 1350 * 1 - command executed, repeatable 1351 * 0 - command executed but not repeatable, interrupted commands are 1352 * always considered not repeatable 1353 * -1 - not executed (unrecognized, bootd recursion or too many args) 1354 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is 1355 * considered unrecognized) 1356 * 1357 * WARNING: 1358 * 1359 * We must create a temporary copy of the command since the command we get 1360 * may be the result from getenv(), which returns a pointer directly to 1361 * the environment data, which may change magicly when the command we run 1362 * creates or modifies environment variables (like "bootp" does). 1363 */ 1364 static int builtin_run_command(const char *cmd, int flag) 1365 { 1366 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */ 1367 char *token; /* start of token in cmdbuf */ 1368 char *sep; /* end of token (separator) in cmdbuf */ 1369 char finaltoken[CONFIG_SYS_CBSIZE]; 1370 char *str = cmdbuf; 1371 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 1372 int argc, inquotes; 1373 int repeatable = 1; 1374 int rc = 0; 1375 1376 #ifdef DEBUG_PARSER 1377 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 1378 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 1379 puts ("\"\n"); 1380 #endif 1381 1382 clear_ctrlc(); /* forget any previous Control C */ 1383 1384 if (!cmd || !*cmd) { 1385 return -1; /* empty command */ 1386 } 1387 1388 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) { 1389 puts ("## Command too long!\n"); 1390 return -1; 1391 } 1392 1393 strcpy (cmdbuf, cmd); 1394 1395 /* Process separators and check for invalid 1396 * repeatable commands 1397 */ 1398 1399 #ifdef DEBUG_PARSER 1400 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 1401 #endif 1402 while (*str) { 1403 1404 /* 1405 * Find separator, or string end 1406 * Allow simple escape of ';' by writing "\;" 1407 */ 1408 for (inquotes = 0, sep = str; *sep; sep++) { 1409 if ((*sep=='\'') && 1410 (*(sep-1) != '\\')) 1411 inquotes=!inquotes; 1412 1413 if (!inquotes && 1414 (*sep == ';') && /* separator */ 1415 ( sep != str) && /* past string start */ 1416 (*(sep-1) != '\\')) /* and NOT escaped */ 1417 break; 1418 } 1419 1420 /* 1421 * Limit the token to data between separators 1422 */ 1423 token = str; 1424 if (*sep) { 1425 str = sep + 1; /* start of command for next pass */ 1426 *sep = '\0'; 1427 } 1428 else 1429 str = sep; /* no more commands for next pass */ 1430 #ifdef DEBUG_PARSER 1431 printf ("token: \"%s\"\n", token); 1432 #endif 1433 1434 /* find macros in this token and replace them */ 1435 process_macros (token, finaltoken); 1436 1437 /* Extract arguments */ 1438 if ((argc = parse_line (finaltoken, argv)) == 0) { 1439 rc = -1; /* no command at all */ 1440 continue; 1441 } 1442 1443 if (cmd_process(flag, argc, argv, &repeatable, NULL)) 1444 rc = -1; 1445 1446 /* Did the user stop this? */ 1447 if (had_ctrlc ()) 1448 return -1; /* if stopped then not repeatable */ 1449 } 1450 1451 return rc ? rc : repeatable; 1452 } 1453 #endif 1454 1455 /* 1456 * Run a command using the selected parser. 1457 * 1458 * @param cmd Command to run 1459 * @param flag Execution flags (CMD_FLAG_...) 1460 * @return 0 on success, or != 0 on error. 1461 */ 1462 int run_command(const char *cmd, int flag) 1463 { 1464 #ifndef CONFIG_SYS_HUSH_PARSER 1465 /* 1466 * builtin_run_command can return 0 or 1 for success, so clean up 1467 * its result. 1468 */ 1469 if (builtin_run_command(cmd, flag) == -1) 1470 return 1; 1471 1472 return 0; 1473 #else 1474 return parse_string_outer(cmd, 1475 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); 1476 #endif 1477 } 1478 1479 #ifndef CONFIG_SYS_HUSH_PARSER 1480 /** 1481 * Execute a list of command separated by ; or \n using the built-in parser. 1482 * 1483 * This function cannot take a const char * for the command, since if it 1484 * finds newlines in the string, it replaces them with \0. 1485 * 1486 * @param cmd String containing list of commands 1487 * @param flag Execution flags (CMD_FLAG_...) 1488 * @return 0 on success, or != 0 on error. 1489 */ 1490 static int builtin_run_command_list(char *cmd, int flag) 1491 { 1492 char *line, *next; 1493 int rcode = 0; 1494 1495 /* 1496 * Break into individual lines, and execute each line; terminate on 1497 * error. 1498 */ 1499 line = next = cmd; 1500 while (*next) { 1501 if (*next == '\n') { 1502 *next = '\0'; 1503 /* run only non-empty commands */ 1504 if (*line) { 1505 debug("** exec: \"%s\"\n", line); 1506 if (builtin_run_command(line, 0) < 0) { 1507 rcode = 1; 1508 break; 1509 } 1510 } 1511 line = next + 1; 1512 } 1513 ++next; 1514 } 1515 if (rcode == 0 && *line) 1516 rcode = (builtin_run_command(line, 0) >= 0); 1517 1518 return rcode; 1519 } 1520 #endif 1521 1522 int run_command_list(const char *cmd, int len, int flag) 1523 { 1524 int need_buff = 1; 1525 char *buff = (char *)cmd; /* cast away const */ 1526 int rcode = 0; 1527 1528 if (len == -1) { 1529 len = strlen(cmd); 1530 #ifdef CONFIG_SYS_HUSH_PARSER 1531 /* hush will never change our string */ 1532 need_buff = 0; 1533 #else 1534 /* the built-in parser will change our string if it sees \n */ 1535 need_buff = strchr(cmd, '\n') != NULL; 1536 #endif 1537 } 1538 if (need_buff) { 1539 buff = malloc(len + 1); 1540 if (!buff) 1541 return 1; 1542 memcpy(buff, cmd, len); 1543 buff[len] = '\0'; 1544 } 1545 #ifdef CONFIG_SYS_HUSH_PARSER 1546 rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON); 1547 #else 1548 /* 1549 * This function will overwrite any \n it sees with a \0, which 1550 * is why it can't work with a const char *. Here we are making 1551 * using of internal knowledge of this function, to avoid always 1552 * doing a malloc() which is actually required only in a case that 1553 * is pretty rare. 1554 */ 1555 rcode = builtin_run_command_list(buff, flag); 1556 if (need_buff) 1557 free(buff); 1558 #endif 1559 1560 return rcode; 1561 } 1562 1563 /****************************************************************************/ 1564 1565 #if defined(CONFIG_CMD_RUN) 1566 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 1567 { 1568 int i; 1569 1570 if (argc < 2) 1571 return CMD_RET_USAGE; 1572 1573 for (i=1; i<argc; ++i) { 1574 char *arg; 1575 1576 if ((arg = getenv (argv[i])) == NULL) { 1577 printf ("## Error: \"%s\" not defined\n", argv[i]); 1578 return 1; 1579 } 1580 1581 if (run_command(arg, flag) != 0) 1582 return 1; 1583 } 1584 return 0; 1585 } 1586 #endif 1587