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 #if defined(CONFIG_UPDATE_TFTP) 61 int update_tftp (ulong addr); 62 #endif /* CONFIG_UPDATE_TFTP */ 63 64 #define MAX_DELAY_STOP_STR 32 65 66 #undef DEBUG_PARSER 67 68 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ 69 70 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); 71 static const char erase_seq[] = "\b \b"; /* erase sequence */ 72 static const char tab_seq[] = " "; /* used to expand TABs */ 73 74 #ifdef CONFIG_BOOT_RETRY_TIME 75 static uint64_t endtime = 0; /* must be set, default is instant timeout */ 76 static int retry_time = -1; /* -1 so can call readline before main_loop */ 77 #endif 78 79 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) 80 81 #ifndef CONFIG_BOOT_RETRY_MIN 82 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 83 #endif 84 85 #ifdef CONFIG_MODEM_SUPPORT 86 int do_mdm_init = 0; 87 extern void mdm_init(void); /* defined in board.c */ 88 #endif 89 90 /*************************************************************************** 91 * Watch for 'delay' seconds for autoboot stop or autoboot delay string. 92 * returns: 0 - no key string, allow autoboot 1 - got key string, abort 93 */ 94 #if defined(CONFIG_BOOTDELAY) 95 # if defined(CONFIG_AUTOBOOT_KEYED) 96 #ifndef CONFIG_MENU 97 static inline 98 #endif 99 int abortboot(int bootdelay) 100 { 101 int abort = 0; 102 uint64_t etime = endtick(bootdelay); 103 struct { 104 char* str; 105 u_int len; 106 int retry; 107 } 108 delaykey [] = { 109 { str: getenv ("bootdelaykey"), retry: 1 }, 110 { str: getenv ("bootdelaykey2"), retry: 1 }, 111 { str: getenv ("bootstopkey"), retry: 0 }, 112 { str: getenv ("bootstopkey2"), retry: 0 }, 113 }; 114 115 char presskey [MAX_DELAY_STOP_STR]; 116 u_int presskey_len = 0; 117 u_int presskey_max = 0; 118 u_int i; 119 120 #ifndef CONFIG_ZERO_BOOTDELAY_CHECK 121 if (bootdelay == 0) 122 return 0; 123 #endif 124 125 # ifdef CONFIG_AUTOBOOT_PROMPT 126 printf(CONFIG_AUTOBOOT_PROMPT); 127 # endif 128 129 # ifdef CONFIG_AUTOBOOT_DELAY_STR 130 if (delaykey[0].str == NULL) 131 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 132 # endif 133 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 134 if (delaykey[1].str == NULL) 135 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 136 # endif 137 # ifdef CONFIG_AUTOBOOT_STOP_STR 138 if (delaykey[2].str == NULL) 139 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 140 # endif 141 # ifdef CONFIG_AUTOBOOT_STOP_STR2 142 if (delaykey[3].str == NULL) 143 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 144 # endif 145 146 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 147 delaykey[i].len = delaykey[i].str == NULL ? 148 0 : strlen (delaykey[i].str); 149 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 150 MAX_DELAY_STOP_STR : delaykey[i].len; 151 152 presskey_max = presskey_max > delaykey[i].len ? 153 presskey_max : delaykey[i].len; 154 155 # if DEBUG_BOOTKEYS 156 printf("%s key:<%s>\n", 157 delaykey[i].retry ? "delay" : "stop", 158 delaykey[i].str ? delaykey[i].str : "NULL"); 159 # endif 160 } 161 162 /* In order to keep up with incoming data, check timeout only 163 * when catch up. 164 */ 165 do { 166 if (tstc()) { 167 if (presskey_len < presskey_max) { 168 presskey [presskey_len ++] = getc(); 169 } 170 else { 171 for (i = 0; i < presskey_max - 1; i ++) 172 presskey [i] = presskey [i + 1]; 173 174 presskey [i] = getc(); 175 } 176 } 177 178 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 179 if (delaykey[i].len > 0 && 180 presskey_len >= delaykey[i].len && 181 memcmp (presskey + presskey_len - delaykey[i].len, 182 delaykey[i].str, 183 delaykey[i].len) == 0) { 184 # if DEBUG_BOOTKEYS 185 printf("got %skey\n", 186 delaykey[i].retry ? "delay" : "stop"); 187 # endif 188 189 # ifdef CONFIG_BOOT_RETRY_TIME 190 /* don't retry auto boot */ 191 if (! delaykey[i].retry) 192 retry_time = -1; 193 # endif 194 abort = 1; 195 } 196 } 197 } while (!abort && get_ticks() <= etime); 198 199 # if DEBUG_BOOTKEYS 200 if (!abort) 201 puts("key timeout\n"); 202 # endif 203 204 #ifdef CONFIG_SILENT_CONSOLE 205 if (abort) 206 gd->flags &= ~GD_FLG_SILENT; 207 #endif 208 209 return abort; 210 } 211 212 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 213 214 #ifdef CONFIG_MENUKEY 215 static int menukey = 0; 216 #endif 217 218 #ifndef CONFIG_MENU 219 static inline 220 #endif 221 int abortboot(int bootdelay) 222 { 223 int abort = 0; 224 unsigned long ts; 225 226 #ifdef CONFIG_MENUPROMPT 227 printf(CONFIG_MENUPROMPT); 228 #else 229 if (bootdelay >= 0) 230 printf("Hit any key to stop autoboot: %2d ", bootdelay); 231 #endif 232 233 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 234 /* 235 * Check if key already pressed 236 * Don't check if bootdelay < 0 237 */ 238 if (bootdelay >= 0) { 239 if (tstc()) { /* we got a key press */ 240 (void) getc(); /* consume input */ 241 puts ("\b\b\b 0"); 242 abort = 1; /* don't auto boot */ 243 } 244 } 245 #endif 246 247 while ((bootdelay > 0) && (!abort)) { 248 --bootdelay; 249 /* delay 1000 ms */ 250 ts = get_timer(0); 251 do { 252 if (tstc()) { /* we got a key press */ 253 abort = 1; /* don't auto boot */ 254 bootdelay = 0; /* no more delay */ 255 # ifdef CONFIG_MENUKEY 256 menukey = getc(); 257 # else 258 (void) getc(); /* consume input */ 259 # endif 260 break; 261 } 262 udelay(10000); 263 } while (!abort && get_timer(ts) < 1000); 264 265 printf("\b\b\b%2d ", bootdelay); 266 } 267 268 putc('\n'); 269 270 #ifdef CONFIG_SILENT_CONSOLE 271 if (abort) 272 gd->flags &= ~GD_FLG_SILENT; 273 #endif 274 275 return abort; 276 } 277 # endif /* CONFIG_AUTOBOOT_KEYED */ 278 #endif /* CONFIG_BOOTDELAY */ 279 280 /* 281 * Runs the given boot command securely. Specifically: 282 * - Doesn't run the command with the shell (run_command or parse_string_outer), 283 * since that's a lot of code surface that an attacker might exploit. 284 * Because of this, we don't do any argument parsing--the secure boot command 285 * has to be a full-fledged u-boot command. 286 * - Doesn't check for keypresses before booting, since that could be a 287 * security hole; also disables Ctrl-C. 288 * - Doesn't allow the command to return. 289 * 290 * Upon any failures, this function will drop into an infinite loop after 291 * printing the error message to console. 292 */ 293 294 #if defined(CONFIG_BOOTDELAY) && defined(CONFIG_OF_CONTROL) 295 static void secure_boot_cmd(char *cmd) 296 { 297 cmd_tbl_t *cmdtp; 298 int rc; 299 300 if (!cmd) { 301 printf("## Error: Secure boot command not specified\n"); 302 goto err; 303 } 304 305 /* Disable Ctrl-C just in case some command is used that checks it. */ 306 disable_ctrlc(1); 307 308 /* Find the command directly. */ 309 cmdtp = find_cmd(cmd); 310 if (!cmdtp) { 311 printf("## Error: \"%s\" not defined\n", cmd); 312 goto err; 313 } 314 315 /* Run the command, forcing no flags and faking argc and argv. */ 316 rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd); 317 318 /* Shouldn't ever return from boot command. */ 319 printf("## Error: \"%s\" returned (code %d)\n", cmd, rc); 320 321 err: 322 /* 323 * Not a whole lot to do here. Rebooting won't help much, since we'll 324 * just end up right back here. Just loop. 325 */ 326 hang(); 327 } 328 329 static void process_fdt_options(const void *blob) 330 { 331 ulong addr; 332 333 /* Add an env variable to point to a kernel payload, if available */ 334 addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); 335 if (addr) 336 setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 337 338 /* Add an env variable to point to a root disk, if available */ 339 addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); 340 if (addr) 341 setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 342 } 343 #endif /* CONFIG_OF_CONTROL */ 344 345 346 /****************************************************************************/ 347 348 void main_loop (void) 349 { 350 #ifndef CONFIG_SYS_HUSH_PARSER 351 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, }; 352 int len; 353 int rc = 1; 354 int flag; 355 #endif 356 #if defined(CONFIG_BOOTDELAY) && defined(CONFIG_OF_CONTROL) 357 char *env; 358 #endif 359 #if defined(CONFIG_BOOTDELAY) 360 char *s; 361 int bootdelay; 362 #endif 363 #ifdef CONFIG_PREBOOT 364 char *p; 365 #endif 366 #ifdef CONFIG_BOOTCOUNT_LIMIT 367 unsigned long bootcount = 0; 368 unsigned long bootlimit = 0; 369 char *bcs; 370 char bcs_set[16]; 371 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 372 373 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 374 375 #ifdef CONFIG_BOOTCOUNT_LIMIT 376 bootcount = bootcount_load(); 377 bootcount++; 378 bootcount_store (bootcount); 379 sprintf (bcs_set, "%lu", bootcount); 380 setenv ("bootcount", bcs_set); 381 bcs = getenv ("bootlimit"); 382 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; 383 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 384 385 #ifdef CONFIG_MODEM_SUPPORT 386 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 387 if (do_mdm_init) { 388 char *str = strdup(getenv("mdm_cmd")); 389 setenv ("preboot", str); /* set or delete definition */ 390 if (str != NULL) 391 free (str); 392 mdm_init(); /* wait for modem connection */ 393 } 394 #endif /* CONFIG_MODEM_SUPPORT */ 395 396 #ifdef CONFIG_VERSION_VARIABLE 397 { 398 setenv ("ver", version_string); /* set version variable */ 399 } 400 #endif /* CONFIG_VERSION_VARIABLE */ 401 402 #ifdef CONFIG_SYS_HUSH_PARSER 403 u_boot_hush_start (); 404 #endif 405 406 #if defined(CONFIG_HUSH_INIT_VAR) 407 hush_init_var (); 408 #endif 409 410 #ifdef CONFIG_PREBOOT 411 if ((p = getenv ("preboot")) != NULL) { 412 # ifdef CONFIG_AUTOBOOT_KEYED 413 int prev = disable_ctrlc(1); /* disable Control C checking */ 414 # endif 415 416 run_command_list(p, -1, 0); 417 418 # ifdef CONFIG_AUTOBOOT_KEYED 419 disable_ctrlc(prev); /* restore Control C checking */ 420 # endif 421 } 422 #endif /* CONFIG_PREBOOT */ 423 424 #if defined(CONFIG_UPDATE_TFTP) 425 update_tftp (0UL); 426 #endif /* CONFIG_UPDATE_TFTP */ 427 428 #if defined(CONFIG_BOOTDELAY) 429 s = getenv ("bootdelay"); 430 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 431 432 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 433 434 #if defined(CONFIG_MENU_SHOW) 435 bootdelay = menu_show(bootdelay); 436 #endif 437 # ifdef CONFIG_BOOT_RETRY_TIME 438 init_cmd_timeout (); 439 # endif /* CONFIG_BOOT_RETRY_TIME */ 440 441 #ifdef CONFIG_POST 442 if (gd->flags & GD_FLG_POSTFAIL) { 443 s = getenv("failbootcmd"); 444 } 445 else 446 #endif /* CONFIG_POST */ 447 #ifdef CONFIG_BOOTCOUNT_LIMIT 448 if (bootlimit && (bootcount > bootlimit)) { 449 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", 450 (unsigned)bootlimit); 451 s = getenv ("altbootcmd"); 452 } 453 else 454 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 455 s = getenv ("bootcmd"); 456 #ifdef CONFIG_OF_CONTROL 457 /* Allow the fdt to override the boot command */ 458 env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd"); 459 if (env) 460 s = env; 461 462 process_fdt_options(gd->fdt_blob); 463 464 /* 465 * If the bootsecure option was chosen, use secure_boot_cmd(). 466 * Always use 'env' in this case, since bootsecure requres that the 467 * bootcmd was specified in the FDT too. 468 */ 469 if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0)) 470 secure_boot_cmd(env); 471 472 #endif /* CONFIG_OF_CONTROL */ 473 474 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 475 476 if (bootdelay != -1 && s && !abortboot(bootdelay)) { 477 # ifdef CONFIG_AUTOBOOT_KEYED 478 int prev = disable_ctrlc(1); /* disable Control C checking */ 479 # endif 480 481 run_command_list(s, -1, 0); 482 483 # ifdef CONFIG_AUTOBOOT_KEYED 484 disable_ctrlc(prev); /* restore Control C checking */ 485 # endif 486 } 487 488 # ifdef CONFIG_MENUKEY 489 if (menukey == CONFIG_MENUKEY) { 490 s = getenv("menucmd"); 491 if (s) 492 run_command_list(s, -1, 0); 493 } 494 #endif /* CONFIG_MENUKEY */ 495 #endif /* CONFIG_BOOTDELAY */ 496 497 /* 498 * Main Loop for Monitor Command Processing 499 */ 500 #ifdef CONFIG_SYS_HUSH_PARSER 501 parse_file_outer(); 502 /* This point is never reached */ 503 for (;;); 504 #else 505 for (;;) { 506 #ifdef CONFIG_BOOT_RETRY_TIME 507 if (rc >= 0) { 508 /* Saw enough of a valid command to 509 * restart the timeout. 510 */ 511 reset_cmd_timeout(); 512 } 513 #endif 514 len = readline (CONFIG_SYS_PROMPT); 515 516 flag = 0; /* assume no special flags for now */ 517 if (len > 0) 518 strcpy (lastcommand, console_buffer); 519 else if (len == 0) 520 flag |= CMD_FLAG_REPEAT; 521 #ifdef CONFIG_BOOT_RETRY_TIME 522 else if (len == -2) { 523 /* -2 means timed out, retry autoboot 524 */ 525 puts ("\nTimed out waiting for command\n"); 526 # ifdef CONFIG_RESET_TO_RETRY 527 /* Reinit board to run initialization code again */ 528 do_reset (NULL, 0, 0, NULL); 529 # else 530 return; /* retry autoboot */ 531 # endif 532 } 533 #endif 534 535 if (len == -1) 536 puts ("<INTERRUPT>\n"); 537 else 538 rc = run_command(lastcommand, flag); 539 540 if (rc <= 0) { 541 /* invalid command or not repeatable, forget it */ 542 lastcommand[0] = 0; 543 } 544 } 545 #endif /*CONFIG_SYS_HUSH_PARSER*/ 546 } 547 548 #ifdef CONFIG_BOOT_RETRY_TIME 549 /*************************************************************************** 550 * initialize command line timeout 551 */ 552 void init_cmd_timeout(void) 553 { 554 char *s = getenv ("bootretry"); 555 556 if (s != NULL) 557 retry_time = (int)simple_strtol(s, NULL, 10); 558 else 559 retry_time = CONFIG_BOOT_RETRY_TIME; 560 561 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 562 retry_time = CONFIG_BOOT_RETRY_MIN; 563 } 564 565 /*************************************************************************** 566 * reset command line timeout to retry_time seconds 567 */ 568 void reset_cmd_timeout(void) 569 { 570 endtime = endtick(retry_time); 571 } 572 #endif 573 574 #ifdef CONFIG_CMDLINE_EDITING 575 576 /* 577 * cmdline-editing related codes from vivi. 578 * Author: Janghoon Lyu <nandy@mizi.com> 579 */ 580 581 #define putnstr(str,n) do { \ 582 printf ("%.*s", (int)n, str); \ 583 } while (0) 584 585 #define CTL_CH(c) ((c) - 'a' + 1) 586 #define CTL_BACKSPACE ('\b') 587 #define DEL ((char)255) 588 #define DEL7 ((char)127) 589 #define CREAD_HIST_CHAR ('!') 590 591 #define getcmd_putch(ch) putc(ch) 592 #define getcmd_getch() getc() 593 #define getcmd_cbeep() getcmd_putch('\a') 594 595 #define HIST_MAX 20 596 #define HIST_SIZE CONFIG_SYS_CBSIZE 597 598 static int hist_max; 599 static int hist_add_idx; 600 static int hist_cur = -1; 601 static unsigned hist_num; 602 603 static char *hist_list[HIST_MAX]; 604 static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ 605 606 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) 607 608 static void hist_init(void) 609 { 610 int i; 611 612 hist_max = 0; 613 hist_add_idx = 0; 614 hist_cur = -1; 615 hist_num = 0; 616 617 for (i = 0; i < HIST_MAX; i++) { 618 hist_list[i] = hist_lines[i]; 619 hist_list[i][0] = '\0'; 620 } 621 } 622 623 static void cread_add_to_hist(char *line) 624 { 625 strcpy(hist_list[hist_add_idx], line); 626 627 if (++hist_add_idx >= HIST_MAX) 628 hist_add_idx = 0; 629 630 if (hist_add_idx > hist_max) 631 hist_max = hist_add_idx; 632 633 hist_num++; 634 } 635 636 static char* hist_prev(void) 637 { 638 char *ret; 639 int old_cur; 640 641 if (hist_cur < 0) 642 return NULL; 643 644 old_cur = hist_cur; 645 if (--hist_cur < 0) 646 hist_cur = hist_max; 647 648 if (hist_cur == hist_add_idx) { 649 hist_cur = old_cur; 650 ret = NULL; 651 } else 652 ret = hist_list[hist_cur]; 653 654 return (ret); 655 } 656 657 static char* hist_next(void) 658 { 659 char *ret; 660 661 if (hist_cur < 0) 662 return NULL; 663 664 if (hist_cur == hist_add_idx) 665 return NULL; 666 667 if (++hist_cur > hist_max) 668 hist_cur = 0; 669 670 if (hist_cur == hist_add_idx) { 671 ret = ""; 672 } else 673 ret = hist_list[hist_cur]; 674 675 return (ret); 676 } 677 678 #ifndef CONFIG_CMDLINE_EDITING 679 static void cread_print_hist_list(void) 680 { 681 int i; 682 unsigned long n; 683 684 n = hist_num - hist_max; 685 686 i = hist_add_idx + 1; 687 while (1) { 688 if (i > hist_max) 689 i = 0; 690 if (i == hist_add_idx) 691 break; 692 printf("%s\n", hist_list[i]); 693 n++; 694 i++; 695 } 696 } 697 #endif /* CONFIG_CMDLINE_EDITING */ 698 699 #define BEGINNING_OF_LINE() { \ 700 while (num) { \ 701 getcmd_putch(CTL_BACKSPACE); \ 702 num--; \ 703 } \ 704 } 705 706 #define ERASE_TO_EOL() { \ 707 if (num < eol_num) { \ 708 printf("%*s", (int)(eol_num - num), ""); \ 709 do { \ 710 getcmd_putch(CTL_BACKSPACE); \ 711 } while (--eol_num > num); \ 712 } \ 713 } 714 715 #define REFRESH_TO_EOL() { \ 716 if (num < eol_num) { \ 717 wlen = eol_num - num; \ 718 putnstr(buf + num, wlen); \ 719 num = eol_num; \ 720 } \ 721 } 722 723 static void cread_add_char(char ichar, int insert, unsigned long *num, 724 unsigned long *eol_num, char *buf, unsigned long len) 725 { 726 unsigned long wlen; 727 728 /* room ??? */ 729 if (insert || *num == *eol_num) { 730 if (*eol_num > len - 1) { 731 getcmd_cbeep(); 732 return; 733 } 734 (*eol_num)++; 735 } 736 737 if (insert) { 738 wlen = *eol_num - *num; 739 if (wlen > 1) { 740 memmove(&buf[*num+1], &buf[*num], wlen-1); 741 } 742 743 buf[*num] = ichar; 744 putnstr(buf + *num, wlen); 745 (*num)++; 746 while (--wlen) { 747 getcmd_putch(CTL_BACKSPACE); 748 } 749 } else { 750 /* echo the character */ 751 wlen = 1; 752 buf[*num] = ichar; 753 putnstr(buf + *num, wlen); 754 (*num)++; 755 } 756 } 757 758 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, 759 unsigned long *eol_num, char *buf, unsigned long len) 760 { 761 while (strsize--) { 762 cread_add_char(*str, insert, num, eol_num, buf, len); 763 str++; 764 } 765 } 766 767 static int cread_line(const char *const prompt, char *buf, unsigned int *len, 768 int timeout) 769 { 770 unsigned long num = 0; 771 unsigned long eol_num = 0; 772 unsigned long wlen; 773 char ichar; 774 int insert = 1; 775 int esc_len = 0; 776 char esc_save[8]; 777 int init_len = strlen(buf); 778 int first = 1; 779 780 if (init_len) 781 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); 782 783 while (1) { 784 #ifdef CONFIG_BOOT_RETRY_TIME 785 while (!tstc()) { /* while no incoming data */ 786 if (retry_time >= 0 && get_ticks() > endtime) 787 return (-2); /* timed out */ 788 WATCHDOG_RESET(); 789 } 790 #endif 791 if (first && timeout) { 792 uint64_t etime = endtick(timeout); 793 794 while (!tstc()) { /* while no incoming data */ 795 if (get_ticks() >= etime) 796 return -2; /* timed out */ 797 WATCHDOG_RESET(); 798 } 799 first = 0; 800 } 801 802 ichar = getcmd_getch(); 803 804 if ((ichar == '\n') || (ichar == '\r')) { 805 putc('\n'); 806 break; 807 } 808 809 /* 810 * handle standard linux xterm esc sequences for arrow key, etc. 811 */ 812 if (esc_len != 0) { 813 if (esc_len == 1) { 814 if (ichar == '[') { 815 esc_save[esc_len] = ichar; 816 esc_len = 2; 817 } else { 818 cread_add_str(esc_save, esc_len, insert, 819 &num, &eol_num, buf, *len); 820 esc_len = 0; 821 } 822 continue; 823 } 824 825 switch (ichar) { 826 827 case 'D': /* <- key */ 828 ichar = CTL_CH('b'); 829 esc_len = 0; 830 break; 831 case 'C': /* -> key */ 832 ichar = CTL_CH('f'); 833 esc_len = 0; 834 break; /* pass off to ^F handler */ 835 case 'H': /* Home key */ 836 ichar = CTL_CH('a'); 837 esc_len = 0; 838 break; /* pass off to ^A handler */ 839 case 'A': /* up arrow */ 840 ichar = CTL_CH('p'); 841 esc_len = 0; 842 break; /* pass off to ^P handler */ 843 case 'B': /* down arrow */ 844 ichar = CTL_CH('n'); 845 esc_len = 0; 846 break; /* pass off to ^N handler */ 847 default: 848 esc_save[esc_len++] = ichar; 849 cread_add_str(esc_save, esc_len, insert, 850 &num, &eol_num, buf, *len); 851 esc_len = 0; 852 continue; 853 } 854 } 855 856 switch (ichar) { 857 case 0x1b: 858 if (esc_len == 0) { 859 esc_save[esc_len] = ichar; 860 esc_len = 1; 861 } else { 862 puts("impossible condition #876\n"); 863 esc_len = 0; 864 } 865 break; 866 867 case CTL_CH('a'): 868 BEGINNING_OF_LINE(); 869 break; 870 case CTL_CH('c'): /* ^C - break */ 871 *buf = '\0'; /* discard input */ 872 return (-1); 873 case CTL_CH('f'): 874 if (num < eol_num) { 875 getcmd_putch(buf[num]); 876 num++; 877 } 878 break; 879 case CTL_CH('b'): 880 if (num) { 881 getcmd_putch(CTL_BACKSPACE); 882 num--; 883 } 884 break; 885 case CTL_CH('d'): 886 if (num < eol_num) { 887 wlen = eol_num - num - 1; 888 if (wlen) { 889 memmove(&buf[num], &buf[num+1], wlen); 890 putnstr(buf + num, wlen); 891 } 892 893 getcmd_putch(' '); 894 do { 895 getcmd_putch(CTL_BACKSPACE); 896 } while (wlen--); 897 eol_num--; 898 } 899 break; 900 case CTL_CH('k'): 901 ERASE_TO_EOL(); 902 break; 903 case CTL_CH('e'): 904 REFRESH_TO_EOL(); 905 break; 906 case CTL_CH('o'): 907 insert = !insert; 908 break; 909 case CTL_CH('x'): 910 case CTL_CH('u'): 911 BEGINNING_OF_LINE(); 912 ERASE_TO_EOL(); 913 break; 914 case DEL: 915 case DEL7: 916 case 8: 917 if (num) { 918 wlen = eol_num - num; 919 num--; 920 memmove(&buf[num], &buf[num+1], wlen); 921 getcmd_putch(CTL_BACKSPACE); 922 putnstr(buf + num, wlen); 923 getcmd_putch(' '); 924 do { 925 getcmd_putch(CTL_BACKSPACE); 926 } while (wlen--); 927 eol_num--; 928 } 929 break; 930 case CTL_CH('p'): 931 case CTL_CH('n'): 932 { 933 char * hline; 934 935 esc_len = 0; 936 937 if (ichar == CTL_CH('p')) 938 hline = hist_prev(); 939 else 940 hline = hist_next(); 941 942 if (!hline) { 943 getcmd_cbeep(); 944 continue; 945 } 946 947 /* nuke the current line */ 948 /* first, go home */ 949 BEGINNING_OF_LINE(); 950 951 /* erase to end of line */ 952 ERASE_TO_EOL(); 953 954 /* copy new line into place and display */ 955 strcpy(buf, hline); 956 eol_num = strlen(buf); 957 REFRESH_TO_EOL(); 958 continue; 959 } 960 #ifdef CONFIG_AUTO_COMPLETE 961 case '\t': { 962 int num2, col; 963 964 /* do not autocomplete when in the middle */ 965 if (num < eol_num) { 966 getcmd_cbeep(); 967 break; 968 } 969 970 buf[num] = '\0'; 971 col = strlen(prompt) + eol_num; 972 num2 = num; 973 if (cmd_auto_complete(prompt, buf, &num2, &col)) { 974 col = num2 - num; 975 num += col; 976 eol_num += col; 977 } 978 break; 979 } 980 #endif 981 default: 982 cread_add_char(ichar, insert, &num, &eol_num, buf, *len); 983 break; 984 } 985 } 986 *len = eol_num; 987 buf[eol_num] = '\0'; /* lose the newline */ 988 989 if (buf[0] && buf[0] != CREAD_HIST_CHAR) 990 cread_add_to_hist(buf); 991 hist_cur = hist_add_idx; 992 993 return 0; 994 } 995 996 #endif /* CONFIG_CMDLINE_EDITING */ 997 998 /****************************************************************************/ 999 1000 /* 1001 * Prompt for input and read a line. 1002 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 1003 * time out when time goes past endtime (timebase time in ticks). 1004 * Return: number of read characters 1005 * -1 if break 1006 * -2 if timed out 1007 */ 1008 int readline (const char *const prompt) 1009 { 1010 /* 1011 * If console_buffer isn't 0-length the user will be prompted to modify 1012 * it instead of entering it from scratch as desired. 1013 */ 1014 console_buffer[0] = '\0'; 1015 1016 return readline_into_buffer(prompt, console_buffer, 0); 1017 } 1018 1019 1020 int readline_into_buffer(const char *const prompt, char *buffer, int timeout) 1021 { 1022 char *p = buffer; 1023 #ifdef CONFIG_CMDLINE_EDITING 1024 unsigned int len = CONFIG_SYS_CBSIZE; 1025 int rc; 1026 static int initted = 0; 1027 1028 /* 1029 * History uses a global array which is not 1030 * writable until after relocation to RAM. 1031 * Revert to non-history version if still 1032 * running from flash. 1033 */ 1034 if (gd->flags & GD_FLG_RELOC) { 1035 if (!initted) { 1036 hist_init(); 1037 initted = 1; 1038 } 1039 1040 if (prompt) 1041 puts (prompt); 1042 1043 rc = cread_line(prompt, p, &len, timeout); 1044 return rc < 0 ? rc : len; 1045 1046 } else { 1047 #endif /* CONFIG_CMDLINE_EDITING */ 1048 char * p_buf = p; 1049 int n = 0; /* buffer index */ 1050 int plen = 0; /* prompt length */ 1051 int col; /* output column cnt */ 1052 char c; 1053 1054 /* print prompt */ 1055 if (prompt) { 1056 plen = strlen (prompt); 1057 puts (prompt); 1058 } 1059 col = plen; 1060 1061 for (;;) { 1062 #ifdef CONFIG_BOOT_RETRY_TIME 1063 while (!tstc()) { /* while no incoming data */ 1064 if (retry_time >= 0 && get_ticks() > endtime) 1065 return (-2); /* timed out */ 1066 WATCHDOG_RESET(); 1067 } 1068 #endif 1069 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 1070 1071 #ifdef CONFIG_SHOW_ACTIVITY 1072 while (!tstc()) { 1073 show_activity(0); 1074 WATCHDOG_RESET(); 1075 } 1076 #endif 1077 c = getc(); 1078 1079 /* 1080 * Special character handling 1081 */ 1082 switch (c) { 1083 case '\r': /* Enter */ 1084 case '\n': 1085 *p = '\0'; 1086 puts ("\r\n"); 1087 return (p - p_buf); 1088 1089 case '\0': /* nul */ 1090 continue; 1091 1092 case 0x03: /* ^C - break */ 1093 p_buf[0] = '\0'; /* discard input */ 1094 return (-1); 1095 1096 case 0x15: /* ^U - erase line */ 1097 while (col > plen) { 1098 puts (erase_seq); 1099 --col; 1100 } 1101 p = p_buf; 1102 n = 0; 1103 continue; 1104 1105 case 0x17: /* ^W - erase word */ 1106 p=delete_char(p_buf, p, &col, &n, plen); 1107 while ((n > 0) && (*p != ' ')) { 1108 p=delete_char(p_buf, p, &col, &n, plen); 1109 } 1110 continue; 1111 1112 case 0x08: /* ^H - backspace */ 1113 case 0x7F: /* DEL - backspace */ 1114 p=delete_char(p_buf, p, &col, &n, plen); 1115 continue; 1116 1117 default: 1118 /* 1119 * Must be a normal character then 1120 */ 1121 if (n < CONFIG_SYS_CBSIZE-2) { 1122 if (c == '\t') { /* expand TABs */ 1123 #ifdef CONFIG_AUTO_COMPLETE 1124 /* if auto completion triggered just continue */ 1125 *p = '\0'; 1126 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { 1127 p = p_buf + n; /* reset */ 1128 continue; 1129 } 1130 #endif 1131 puts (tab_seq+(col&07)); 1132 col += 8 - (col&07); 1133 } else { 1134 char buf[2]; 1135 1136 /* 1137 * Echo input using puts() to force am 1138 * LCD flush if we are using an LCD 1139 */ 1140 ++col; 1141 buf[0] = c; 1142 buf[1] = '\0'; 1143 puts(buf); 1144 } 1145 *p++ = c; 1146 ++n; 1147 } else { /* Buffer full */ 1148 putc ('\a'); 1149 } 1150 } 1151 } 1152 #ifdef CONFIG_CMDLINE_EDITING 1153 } 1154 #endif 1155 } 1156 1157 /****************************************************************************/ 1158 1159 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 1160 { 1161 char *s; 1162 1163 if (*np == 0) { 1164 return (p); 1165 } 1166 1167 if (*(--p) == '\t') { /* will retype the whole line */ 1168 while (*colp > plen) { 1169 puts (erase_seq); 1170 (*colp)--; 1171 } 1172 for (s=buffer; s<p; ++s) { 1173 if (*s == '\t') { 1174 puts (tab_seq+((*colp) & 07)); 1175 *colp += 8 - ((*colp) & 07); 1176 } else { 1177 ++(*colp); 1178 putc (*s); 1179 } 1180 } 1181 } else { 1182 puts (erase_seq); 1183 (*colp)--; 1184 } 1185 (*np)--; 1186 return (p); 1187 } 1188 1189 /****************************************************************************/ 1190 1191 int parse_line (char *line, char *argv[]) 1192 { 1193 int nargs = 0; 1194 1195 #ifdef DEBUG_PARSER 1196 printf ("parse_line: \"%s\"\n", line); 1197 #endif 1198 while (nargs < CONFIG_SYS_MAXARGS) { 1199 1200 /* skip any white space */ 1201 while (isblank(*line)) 1202 ++line; 1203 1204 if (*line == '\0') { /* end of line, no more args */ 1205 argv[nargs] = NULL; 1206 #ifdef DEBUG_PARSER 1207 printf ("parse_line: nargs=%d\n", nargs); 1208 #endif 1209 return (nargs); 1210 } 1211 1212 argv[nargs++] = line; /* begin of argument string */ 1213 1214 /* find end of string */ 1215 while (*line && !isblank(*line)) 1216 ++line; 1217 1218 if (*line == '\0') { /* end of line, no more args */ 1219 argv[nargs] = NULL; 1220 #ifdef DEBUG_PARSER 1221 printf ("parse_line: nargs=%d\n", nargs); 1222 #endif 1223 return (nargs); 1224 } 1225 1226 *line++ = '\0'; /* terminate current arg */ 1227 } 1228 1229 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS); 1230 1231 #ifdef DEBUG_PARSER 1232 printf ("parse_line: nargs=%d\n", nargs); 1233 #endif 1234 return (nargs); 1235 } 1236 1237 /****************************************************************************/ 1238 1239 #ifndef CONFIG_SYS_HUSH_PARSER 1240 static void process_macros (const char *input, char *output) 1241 { 1242 char c, prev; 1243 const char *varname_start = NULL; 1244 int inputcnt = strlen (input); 1245 int outputcnt = CONFIG_SYS_CBSIZE; 1246 int state = 0; /* 0 = waiting for '$' */ 1247 1248 /* 1 = waiting for '(' or '{' */ 1249 /* 2 = waiting for ')' or '}' */ 1250 /* 3 = waiting for ''' */ 1251 #ifdef DEBUG_PARSER 1252 char *output_start = output; 1253 1254 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), 1255 input); 1256 #endif 1257 1258 prev = '\0'; /* previous character */ 1259 1260 while (inputcnt && outputcnt) { 1261 c = *input++; 1262 inputcnt--; 1263 1264 if (state != 3) { 1265 /* remove one level of escape characters */ 1266 if ((c == '\\') && (prev != '\\')) { 1267 if (inputcnt-- == 0) 1268 break; 1269 prev = c; 1270 c = *input++; 1271 } 1272 } 1273 1274 switch (state) { 1275 case 0: /* Waiting for (unescaped) $ */ 1276 if ((c == '\'') && (prev != '\\')) { 1277 state = 3; 1278 break; 1279 } 1280 if ((c == '$') && (prev != '\\')) { 1281 state++; 1282 } else { 1283 *(output++) = c; 1284 outputcnt--; 1285 } 1286 break; 1287 case 1: /* Waiting for ( */ 1288 if (c == '(' || c == '{') { 1289 state++; 1290 varname_start = input; 1291 } else { 1292 state = 0; 1293 *(output++) = '$'; 1294 outputcnt--; 1295 1296 if (outputcnt) { 1297 *(output++) = c; 1298 outputcnt--; 1299 } 1300 } 1301 break; 1302 case 2: /* Waiting for ) */ 1303 if (c == ')' || c == '}') { 1304 int i; 1305 char envname[CONFIG_SYS_CBSIZE], *envval; 1306 int envcnt = input - varname_start - 1; /* Varname # of chars */ 1307 1308 /* Get the varname */ 1309 for (i = 0; i < envcnt; i++) { 1310 envname[i] = varname_start[i]; 1311 } 1312 envname[i] = 0; 1313 1314 /* Get its value */ 1315 envval = getenv (envname); 1316 1317 /* Copy into the line if it exists */ 1318 if (envval != NULL) 1319 while ((*envval) && outputcnt) { 1320 *(output++) = *(envval++); 1321 outputcnt--; 1322 } 1323 /* Look for another '$' */ 1324 state = 0; 1325 } 1326 break; 1327 case 3: /* Waiting for ' */ 1328 if ((c == '\'') && (prev != '\\')) { 1329 state = 0; 1330 } else { 1331 *(output++) = c; 1332 outputcnt--; 1333 } 1334 break; 1335 } 1336 prev = c; 1337 } 1338 1339 if (outputcnt) 1340 *output = 0; 1341 else 1342 *(output - 1) = 0; 1343 1344 #ifdef DEBUG_PARSER 1345 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 1346 strlen (output_start), output_start); 1347 #endif 1348 } 1349 1350 /**************************************************************************** 1351 * returns: 1352 * 1 - command executed, repeatable 1353 * 0 - command executed but not repeatable, interrupted commands are 1354 * always considered not repeatable 1355 * -1 - not executed (unrecognized, bootd recursion or too many args) 1356 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is 1357 * considered unrecognized) 1358 * 1359 * WARNING: 1360 * 1361 * We must create a temporary copy of the command since the command we get 1362 * may be the result from getenv(), which returns a pointer directly to 1363 * the environment data, which may change magicly when the command we run 1364 * creates or modifies environment variables (like "bootp" does). 1365 */ 1366 static int builtin_run_command(const char *cmd, int flag) 1367 { 1368 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */ 1369 char *token; /* start of token in cmdbuf */ 1370 char *sep; /* end of token (separator) in cmdbuf */ 1371 char finaltoken[CONFIG_SYS_CBSIZE]; 1372 char *str = cmdbuf; 1373 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 1374 int argc, inquotes; 1375 int repeatable = 1; 1376 int rc = 0; 1377 1378 #ifdef DEBUG_PARSER 1379 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 1380 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 1381 puts ("\"\n"); 1382 #endif 1383 1384 clear_ctrlc(); /* forget any previous Control C */ 1385 1386 if (!cmd || !*cmd) { 1387 return -1; /* empty command */ 1388 } 1389 1390 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) { 1391 puts ("## Command too long!\n"); 1392 return -1; 1393 } 1394 1395 strcpy (cmdbuf, cmd); 1396 1397 /* Process separators and check for invalid 1398 * repeatable commands 1399 */ 1400 1401 #ifdef DEBUG_PARSER 1402 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 1403 #endif 1404 while (*str) { 1405 1406 /* 1407 * Find separator, or string end 1408 * Allow simple escape of ';' by writing "\;" 1409 */ 1410 for (inquotes = 0, sep = str; *sep; sep++) { 1411 if ((*sep=='\'') && 1412 (*(sep-1) != '\\')) 1413 inquotes=!inquotes; 1414 1415 if (!inquotes && 1416 (*sep == ';') && /* separator */ 1417 ( sep != str) && /* past string start */ 1418 (*(sep-1) != '\\')) /* and NOT escaped */ 1419 break; 1420 } 1421 1422 /* 1423 * Limit the token to data between separators 1424 */ 1425 token = str; 1426 if (*sep) { 1427 str = sep + 1; /* start of command for next pass */ 1428 *sep = '\0'; 1429 } 1430 else 1431 str = sep; /* no more commands for next pass */ 1432 #ifdef DEBUG_PARSER 1433 printf ("token: \"%s\"\n", token); 1434 #endif 1435 1436 /* find macros in this token and replace them */ 1437 process_macros (token, finaltoken); 1438 1439 /* Extract arguments */ 1440 if ((argc = parse_line (finaltoken, argv)) == 0) { 1441 rc = -1; /* no command at all */ 1442 continue; 1443 } 1444 1445 if (cmd_process(flag, argc, argv, &repeatable, NULL)) 1446 rc = -1; 1447 1448 /* Did the user stop this? */ 1449 if (had_ctrlc ()) 1450 return -1; /* if stopped then not repeatable */ 1451 } 1452 1453 return rc ? rc : repeatable; 1454 } 1455 #endif 1456 1457 /* 1458 * Run a command using the selected parser. 1459 * 1460 * @param cmd Command to run 1461 * @param flag Execution flags (CMD_FLAG_...) 1462 * @return 0 on success, or != 0 on error. 1463 */ 1464 int run_command(const char *cmd, int flag) 1465 { 1466 #ifndef CONFIG_SYS_HUSH_PARSER 1467 /* 1468 * builtin_run_command can return 0 or 1 for success, so clean up 1469 * its result. 1470 */ 1471 if (builtin_run_command(cmd, flag) == -1) 1472 return 1; 1473 1474 return 0; 1475 #else 1476 return parse_string_outer(cmd, 1477 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); 1478 #endif 1479 } 1480 1481 #ifndef CONFIG_SYS_HUSH_PARSER 1482 /** 1483 * Execute a list of command separated by ; or \n using the built-in parser. 1484 * 1485 * This function cannot take a const char * for the command, since if it 1486 * finds newlines in the string, it replaces them with \0. 1487 * 1488 * @param cmd String containing list of commands 1489 * @param flag Execution flags (CMD_FLAG_...) 1490 * @return 0 on success, or != 0 on error. 1491 */ 1492 static int builtin_run_command_list(char *cmd, int flag) 1493 { 1494 char *line, *next; 1495 int rcode = 0; 1496 1497 /* 1498 * Break into individual lines, and execute each line; terminate on 1499 * error. 1500 */ 1501 line = next = cmd; 1502 while (*next) { 1503 if (*next == '\n') { 1504 *next = '\0'; 1505 /* run only non-empty commands */ 1506 if (*line) { 1507 debug("** exec: \"%s\"\n", line); 1508 if (builtin_run_command(line, 0) < 0) { 1509 rcode = 1; 1510 break; 1511 } 1512 } 1513 line = next + 1; 1514 } 1515 ++next; 1516 } 1517 if (rcode == 0 && *line) 1518 rcode = (builtin_run_command(line, 0) >= 0); 1519 1520 return rcode; 1521 } 1522 #endif 1523 1524 int run_command_list(const char *cmd, int len, int flag) 1525 { 1526 int need_buff = 1; 1527 char *buff = (char *)cmd; /* cast away const */ 1528 int rcode = 0; 1529 1530 if (len == -1) { 1531 len = strlen(cmd); 1532 #ifdef CONFIG_SYS_HUSH_PARSER 1533 /* hush will never change our string */ 1534 need_buff = 0; 1535 #else 1536 /* the built-in parser will change our string if it sees \n */ 1537 need_buff = strchr(cmd, '\n') != NULL; 1538 #endif 1539 } 1540 if (need_buff) { 1541 buff = malloc(len + 1); 1542 if (!buff) 1543 return 1; 1544 memcpy(buff, cmd, len); 1545 buff[len] = '\0'; 1546 } 1547 #ifdef CONFIG_SYS_HUSH_PARSER 1548 rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON); 1549 #else 1550 /* 1551 * This function will overwrite any \n it sees with a \0, which 1552 * is why it can't work with a const char *. Here we are making 1553 * using of internal knowledge of this function, to avoid always 1554 * doing a malloc() which is actually required only in a case that 1555 * is pretty rare. 1556 */ 1557 rcode = builtin_run_command_list(buff, flag); 1558 if (need_buff) 1559 free(buff); 1560 #endif 1561 1562 return rcode; 1563 } 1564 1565 /****************************************************************************/ 1566 1567 #if defined(CONFIG_CMD_RUN) 1568 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 1569 { 1570 int i; 1571 1572 if (argc < 2) 1573 return CMD_RET_USAGE; 1574 1575 for (i=1; i<argc; ++i) { 1576 char *arg; 1577 1578 if ((arg = getenv (argv[i])) == NULL) { 1579 printf ("## Error: \"%s\" not defined\n", argv[i]); 1580 return 1; 1581 } 1582 1583 if (run_command(arg, flag) != 0) 1584 return 1; 1585 } 1586 return 0; 1587 } 1588 #endif 1589