common/main.c

   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 #ifdef CONFIG_MODEM_SUPPORT
  34 #include <malloc.h>             /* for free() prototype */
  35 #endif
  36
  37 #ifdef CONFIG_SYS_HUSH_PARSER
  38 #include <hush.h>
  39 #endif
  40
  41 #include <post.h>
  42
  43 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
  44 DECLARE_GLOBAL_DATA_PTR;
  45 #endif
  46
  47 /*
  48  * Board-specific Platform code can reimplement show_boot_progress () if needed
  49  */
  50 void inline __show_boot_progress (int val) {}
  51 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress")));
  52
  53 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
  54 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);                /* for do_reset() prototype */
  55 #endif
  56
  57 extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  58
  59 #if defined(CONFIG_UPDATE_TFTP)
  60 void update_tftp (void);
  61 #endif /* CONFIG_UPDATE_TFTP */
  62
  63 #define MAX_DELAY_STOP_STR 32
  64
  65 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
  66 static int abortboot(int);
  67 #endif
  68
  69 #undef DEBUG_PARSER
  70
  71 char        console_buffer[CONFIG_SYS_CBSIZE + 1];      /* console I/O buffer   */
  72
  73 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
  74 static char erase_seq[] = "\b \b";              /* erase sequence       */
  75 static char   tab_seq[] = "        ";           /* used to expand TABs  */
  76
  77 #ifdef CONFIG_BOOT_RETRY_TIME
  78 static uint64_t endtime = 0;  /* must be set, default is instant timeout */
  79 static int      retry_time = -1; /* -1 so can call readline before main_loop */
  80 #endif
  81
  82 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
  83
  84 #ifndef CONFIG_BOOT_RETRY_MIN
  85 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
  86 #endif
  87
  88 #ifdef CONFIG_MODEM_SUPPORT
  89 int do_mdm_init = 0;
  90 extern void mdm_init(void); /* defined in board.c */
  91 #endif
  92
  93 /***************************************************************************
  94  * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
  95  * returns: 0 -  no key string, allow autoboot
  96  *          1 - got key string, abort
  97  */
  98 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
  99 # if defined(CONFIG_AUTOBOOT_KEYED)
 100 static __inline__ int abortboot(int bootdelay)
 101 {
 102         int abort = 0;
 103         uint64_t etime = endtick(bootdelay);
 104         struct {
 105                 char* str;
 106                 u_int len;
 107                 int retry;
 108         }
 109         delaykey [] = {
 110                 { str: getenv ("bootdelaykey"),  retry: 1 },
 111                 { str: getenv ("bootdelaykey2"), retry: 1 },
 112                 { str: getenv ("bootstopkey"),   retry: 0 },
 113                 { str: getenv ("bootstopkey2"),  retry: 0 },
 114         };
 115
 116         char presskey [MAX_DELAY_STOP_STR];
 117         u_int presskey_len = 0;
 118         u_int presskey_max = 0;
 119         u_int i;
 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 static __inline__ int abortboot(int bootdelay)
 215 {
 216         int abort = 0;
 217
 218 #ifdef CONFIG_MENUPROMPT
 219         printf(CONFIG_MENUPROMPT);
 220 #else
 221         printf("Hit any key to stop autoboot: %2d ", bootdelay);
 222 #endif
 223
 224 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
 225         /*
 226          * Check if key already pressed
 227          * Don't check if bootdelay < 0
 228          */
 229         if (bootdelay >= 0) {
 230                 if (tstc()) {   /* we got a key press   */
 231                         (void) getc();  /* consume input        */
 232                         puts ("\b\b\b 0");
 233                         abort = 1;      /* don't auto boot      */
 234                 }
 235         }
 236 #endif
 237
 238         while ((bootdelay > 0) && (!abort)) {
 239                 int i;
 240
 241                 --bootdelay;
 242                 /* delay 100 * 10ms */
 243                 for (i=0; !abort && i<100; ++i) {
 244                         if (tstc()) {   /* we got a key press   */
 245                                 abort  = 1;     /* don't auto boot      */
 246                                 bootdelay = 0;  /* no more delay        */
 247 # ifdef CONFIG_MENUKEY
 248                                 menukey = getc();
 249 # else
 250                                 (void) getc();  /* consume input        */
 251 # endif
 252                                 break;
 253                         }
 254                         udelay(10000);
 255                 }
 256
 257                 printf("\b\b\b%2d ", bootdelay);
 258         }
 259
 260         putc('\n');
 261
 262 #ifdef CONFIG_SILENT_CONSOLE
 263         if (abort)
 264                 gd->flags &= ~GD_FLG_SILENT;
 265 #endif
 266
 267         return abort;
 268 }
 269 # endif /* CONFIG_AUTOBOOT_KEYED */
 270 #endif  /* CONFIG_BOOTDELAY >= 0  */
 271
 272 /****************************************************************************/
 273
 274 void main_loop (void)
 275 {
 276 #ifndef CONFIG_SYS_HUSH_PARSER
 277         static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, };
 278         int len;
 279         int rc = 1;
 280         int flag;
 281 #endif
 282
 283 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
 284         char *s;
 285         int bootdelay;
 286 #endif
 287 #ifdef CONFIG_PREBOOT
 288         char *p;
 289 #endif
 290 #ifdef CONFIG_BOOTCOUNT_LIMIT
 291         unsigned long bootcount = 0;
 292         unsigned long bootlimit = 0;
 293         char *bcs;
 294         char bcs_set[16];
 295 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 296
 297 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
 298         ulong bmp = 0;          /* default bitmap */
 299         extern int trab_vfd (ulong bitmap);
 300
 301 #ifdef CONFIG_MODEM_SUPPORT
 302         if (do_mdm_init)
 303                 bmp = 1;        /* alternate bitmap */
 304 #endif
 305         trab_vfd (bmp);
 306 #endif  /* CONFIG_VFD && VFD_TEST_LOGO */
 307
 308 #ifdef CONFIG_BOOTCOUNT_LIMIT
 309         bootcount = bootcount_load();
 310         bootcount++;
 311         bootcount_store (bootcount);
 312         sprintf (bcs_set, "%lu", bootcount);
 313         setenv ("bootcount", bcs_set);
 314         bcs = getenv ("bootlimit");
 315         bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
 316 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 317
 318 #ifdef CONFIG_MODEM_SUPPORT
 319         debug ("DEBUG: main_loop:   do_mdm_init=%d\n", do_mdm_init);
 320         if (do_mdm_init) {
 321                 char *str = strdup(getenv("mdm_cmd"));
 322                 setenv ("preboot", str);  /* set or delete definition */
 323                 if (str != NULL)
 324                         free (str);
 325                 mdm_init(); /* wait for modem connection */
 326         }
 327 #endif  /* CONFIG_MODEM_SUPPORT */
 328
 329 #ifdef CONFIG_VERSION_VARIABLE
 330         {
 331                 extern char version_string[];
 332
 333                 setenv ("ver", version_string);  /* set version variable */
 334         }
 335 #endif /* CONFIG_VERSION_VARIABLE */
 336
 337 #ifdef CONFIG_SYS_HUSH_PARSER
 338         u_boot_hush_start ();
 339 #endif
 340
 341 #if defined(CONFIG_HUSH_INIT_VAR)
 342         hush_init_var ();
 343 #endif
 344
 345 #ifdef CONFIG_AUTO_COMPLETE
 346         install_auto_complete();
 347 #endif
 348
 349 #ifdef CONFIG_PREBOOT
 350         if ((p = getenv ("preboot")) != NULL) {
 351 # ifdef CONFIG_AUTOBOOT_KEYED
 352                 int prev = disable_ctrlc(1);    /* disable Control C checking */
 353 # endif
 354
 355 # ifndef CONFIG_SYS_HUSH_PARSER
 356                 run_command (p, 0);
 357 # else
 358                 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
 359                                     FLAG_EXIT_FROM_LOOP);
 360 # endif
 361
 362 # ifdef CONFIG_AUTOBOOT_KEYED
 363                 disable_ctrlc(prev);    /* restore Control C checking */
 364 # endif
 365         }
 366 #endif /* CONFIG_PREBOOT */
 367
 368 #if defined(CONFIG_UPDATE_TFTP)
 369         update_tftp ();
 370 #endif /* CONFIG_UPDATE_TFTP */
 371
 372 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
 373         s = getenv ("bootdelay");
 374         bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
 375
 376         debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
 377
 378 # ifdef CONFIG_BOOT_RETRY_TIME
 379         init_cmd_timeout ();
 380 # endif /* CONFIG_BOOT_RETRY_TIME */
 381
 382 #ifdef CONFIG_POST
 383         if (gd->flags & GD_FLG_POSTFAIL) {
 384                 s = getenv("failbootcmd");
 385         }
 386         else
 387 #endif /* CONFIG_POST */
 388 #ifdef CONFIG_BOOTCOUNT_LIMIT
 389         if (bootlimit && (bootcount > bootlimit)) {
 390                 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
 391                         (unsigned)bootlimit);
 392                 s = getenv ("altbootcmd");
 393         }
 394         else
 395 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 396                 s = getenv ("bootcmd");
 397
 398         debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
 399
 400         if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
 401 # ifdef CONFIG_AUTOBOOT_KEYED
 402                 int prev = disable_ctrlc(1);    /* disable Control C checking */
 403 # endif
 404
 405 # ifndef CONFIG_SYS_HUSH_PARSER
 406                 run_command (s, 0);
 407 # else
 408                 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
 409                                     FLAG_EXIT_FROM_LOOP);
 410 # endif
 411
 412 # ifdef CONFIG_AUTOBOOT_KEYED
 413                 disable_ctrlc(prev);    /* restore Control C checking */
 414 # endif
 415         }
 416
 417 # ifdef CONFIG_MENUKEY
 418         if (menukey == CONFIG_MENUKEY) {
 419             s = getenv("menucmd");
 420             if (s) {
 421 # ifndef CONFIG_SYS_HUSH_PARSER
 422                 run_command (s, 0);
 423 # else
 424                 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
 425                                     FLAG_EXIT_FROM_LOOP);
 426 # endif
 427             }
 428         }
 429 #endif /* CONFIG_MENUKEY */
 430 #endif /* CONFIG_BOOTDELAY */
 431
 432         /*
 433          * Main Loop for Monitor Command Processing
 434          */
 435 #ifdef CONFIG_SYS_HUSH_PARSER
 436         parse_file_outer();
 437         /* This point is never reached */
 438         for (;;);
 439 #else
 440         for (;;) {
 441 #ifdef CONFIG_BOOT_RETRY_TIME
 442                 if (rc >= 0) {
 443                         /* Saw enough of a valid command to
 444                          * restart the timeout.
 445                          */
 446                         reset_cmd_timeout();
 447                 }
 448 #endif
 449                 len = readline (CONFIG_SYS_PROMPT);
 450
 451                 flag = 0;       /* assume no special flags for now */
 452                 if (len > 0)
 453                         strcpy (lastcommand, console_buffer);
 454                 else if (len == 0)
 455                         flag |= CMD_FLAG_REPEAT;
 456 #ifdef CONFIG_BOOT_RETRY_TIME
 457                 else if (len == -2) {
 458                         /* -2 means timed out, retry autoboot
 459                          */
 460                         puts ("\nTimed out waiting for command\n");
 461 # ifdef CONFIG_RESET_TO_RETRY
 462                         /* Reinit board to run initialization code again */
 463                         do_reset (NULL, 0, 0, NULL);
 464 # else
 465                         return;         /* retry autoboot */
 466 # endif
 467                 }
 468 #endif
 469
 470                 if (len == -1)
 471                         puts ("<INTERRUPT>\n");
 472                 else
 473                         rc = run_command (lastcommand, flag);
 474
 475                 if (rc <= 0) {
 476                         /* invalid command or not repeatable, forget it */
 477                         lastcommand[0] = 0;
 478                 }
 479         }
 480 #endif /*CONFIG_SYS_HUSH_PARSER*/
 481 }
 482
 483 #ifdef CONFIG_BOOT_RETRY_TIME
 484 /***************************************************************************
 485  * initialize command line timeout
 486  */
 487 void init_cmd_timeout(void)
 488 {
 489         char *s = getenv ("bootretry");
 490
 491         if (s != NULL)
 492                 retry_time = (int)simple_strtol(s, NULL, 10);
 493         else
 494                 retry_time =  CONFIG_BOOT_RETRY_TIME;
 495
 496         if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
 497                 retry_time = CONFIG_BOOT_RETRY_MIN;
 498 }
 499
 500 /***************************************************************************
 501  * reset command line timeout to retry_time seconds
 502  */
 503 void reset_cmd_timeout(void)
 504 {
 505         endtime = endtick(retry_time);
 506 }
 507 #endif
 508
 509 #ifdef CONFIG_CMDLINE_EDITING
 510
 511 /*
 512  * cmdline-editing related codes from vivi.
 513  * Author: Janghoon Lyu <nandy@mizi.com>
 514  */
 515
 516 #define putnstr(str,n)  do {                    \
 517                 printf ("%.*s", (int)n, str);   \
 518         } while (0)
 519
 520 #define CTL_CH(c)               ((c) - 'a' + 1)
 521
 522 #define MAX_CMDBUF_SIZE         CONFIG_SYS_CBSIZE
 523
 524 #define CTL_BACKSPACE           ('\b')
 525 #define DEL                     ((char)255)
 526 #define DEL7                    ((char)127)
 527 #define CREAD_HIST_CHAR         ('!')
 528
 529 #define getcmd_putch(ch)        putc(ch)
 530 #define getcmd_getch()          getc()
 531 #define getcmd_cbeep()          getcmd_putch('\a')
 532
 533 #define HIST_MAX                20
 534 #define HIST_SIZE               MAX_CMDBUF_SIZE
 535
 536 static int hist_max = 0;
 537 static int hist_add_idx = 0;
 538 static int hist_cur = -1;
 539 unsigned hist_num = 0;
 540
 541 char* hist_list[HIST_MAX];
 542 char hist_lines[HIST_MAX][HIST_SIZE + 1];        /* Save room for NULL */
 543
 544 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
 545
 546 static void hist_init(void)
 547 {
 548         int i;
 549
 550         hist_max = 0;
 551         hist_add_idx = 0;
 552         hist_cur = -1;
 553         hist_num = 0;
 554
 555         for (i = 0; i < HIST_MAX; i++) {
 556                 hist_list[i] = hist_lines[i];
 557                 hist_list[i][0] = '\0';
 558         }
 559 }
 560
 561 static void cread_add_to_hist(char *line)
 562 {
 563         strcpy(hist_list[hist_add_idx], line);
 564
 565         if (++hist_add_idx >= HIST_MAX)
 566                 hist_add_idx = 0;
 567
 568         if (hist_add_idx > hist_max)
 569                 hist_max = hist_add_idx;
 570
 571         hist_num++;
 572 }
 573
 574 static char* hist_prev(void)
 575 {
 576         char *ret;
 577         int old_cur;
 578
 579         if (hist_cur < 0)
 580                 return NULL;
 581
 582         old_cur = hist_cur;
 583         if (--hist_cur < 0)
 584                 hist_cur = hist_max;
 585
 586         if (hist_cur == hist_add_idx) {
 587                 hist_cur = old_cur;
 588                 ret = NULL;
 589         } else
 590                 ret = hist_list[hist_cur];
 591
 592         return (ret);
 593 }
 594
 595 static char* hist_next(void)
 596 {
 597         char *ret;
 598
 599         if (hist_cur < 0)
 600                 return NULL;
 601
 602         if (hist_cur == hist_add_idx)
 603                 return NULL;
 604
 605         if (++hist_cur > hist_max)
 606                 hist_cur = 0;
 607
 608         if (hist_cur == hist_add_idx) {
 609                 ret = "";
 610         } else
 611                 ret = hist_list[hist_cur];
 612
 613         return (ret);
 614 }
 615
 616 #ifndef CONFIG_CMDLINE_EDITING
 617 static void cread_print_hist_list(void)
 618 {
 619         int i;
 620         unsigned long n;
 621
 622         n = hist_num - hist_max;
 623
 624         i = hist_add_idx + 1;
 625         while (1) {
 626                 if (i > hist_max)
 627                         i = 0;
 628                 if (i == hist_add_idx)
 629                         break;
 630                 printf("%s\n", hist_list[i]);
 631                 n++;
 632                 i++;
 633         }
 634 }
 635 #endif /* CONFIG_CMDLINE_EDITING */
 636
 637 #define BEGINNING_OF_LINE() {                   \
 638         while (num) {                           \
 639                 getcmd_putch(CTL_BACKSPACE);    \
 640                 num--;                          \
 641         }                                       \
 642 }
 643
 644 #define ERASE_TO_EOL() {                                \
 645         if (num < eol_num) {                            \
 646                 int tmp;                                \
 647                 for (tmp = num; tmp < eol_num; tmp++)   \
 648                         getcmd_putch(' ');              \
 649                 while (tmp-- > num)                     \
 650                         getcmd_putch(CTL_BACKSPACE);    \
 651                 eol_num = num;                          \
 652         }                                               \
 653 }
 654
 655 #define REFRESH_TO_EOL() {                      \
 656         if (num < eol_num) {                    \
 657                 wlen = eol_num - num;           \
 658                 putnstr(buf + num, wlen);       \
 659                 num = eol_num;                  \
 660         }                                       \
 661 }
 662
 663 static void cread_add_char(char ichar, int insert, unsigned long *num,
 664                unsigned long *eol_num, char *buf, unsigned long len)
 665 {
 666         unsigned long wlen;
 667
 668         /* room ??? */
 669         if (insert || *num == *eol_num) {
 670                 if (*eol_num > len - 1) {
 671                         getcmd_cbeep();
 672                         return;
 673                 }
 674                 (*eol_num)++;
 675         }
 676
 677         if (insert) {
 678                 wlen = *eol_num - *num;
 679                 if (wlen > 1) {
 680                         memmove(&buf[*num+1], &buf[*num], wlen-1);
 681                 }
 682
 683                 buf[*num] = ichar;
 684                 putnstr(buf + *num, wlen);
 685                 (*num)++;
 686                 while (--wlen) {
 687                         getcmd_putch(CTL_BACKSPACE);
 688                 }
 689         } else {
 690                 /* echo the character */
 691                 wlen = 1;
 692                 buf[*num] = ichar;
 693                 putnstr(buf + *num, wlen);
 694                 (*num)++;
 695         }
 696 }
 697
 698 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
 699               unsigned long *eol_num, char *buf, unsigned long len)
 700 {
 701         while (strsize--) {
 702                 cread_add_char(*str, insert, num, eol_num, buf, len);
 703                 str++;
 704         }
 705 }
 706
 707 static int cread_line(const char *const prompt, char *buf, unsigned int *len)
 708 {
 709         unsigned long num = 0;
 710         unsigned long eol_num = 0;
 711         unsigned long wlen;
 712         char ichar;
 713         int insert = 1;
 714         int esc_len = 0;
 715         char esc_save[8];
 716         int init_len = strlen(buf);
 717
 718         if (init_len)
 719                 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
 720
 721         while (1) {
 722 #ifdef CONFIG_BOOT_RETRY_TIME
 723                 while (!tstc()) {       /* while no incoming data */
 724                         if (retry_time >= 0 && get_ticks() > endtime)
 725                                 return (-2);    /* timed out */
 726                         WATCHDOG_RESET();
 727                 }
 728 #endif
 729
 730                 ichar = getcmd_getch();
 731
 732                 if ((ichar == '\n') || (ichar == '\r')) {
 733                         putc('\n');
 734                         break;
 735                 }
 736
 737                 /*
 738                  * handle standard linux xterm esc sequences for arrow key, etc.
 739                  */
 740                 if (esc_len != 0) {
 741                         if (esc_len == 1) {
 742                                 if (ichar == '[') {
 743                                         esc_save[esc_len] = ichar;
 744                                         esc_len = 2;
 745                                 } else {
 746                                         cread_add_str(esc_save, esc_len, insert,
 747                                                       &num, &eol_num, buf, *len);
 748                                         esc_len = 0;
 749                                 }
 750                                 continue;
 751                         }
 752
 753                         switch (ichar) {
 754
 755                         case 'D':       /* <- key */
 756                                 ichar = CTL_CH('b');
 757                                 esc_len = 0;
 758                                 break;
 759                         case 'C':       /* -> key */
 760                                 ichar = CTL_CH('f');
 761                                 esc_len = 0;
 762                                 break;  /* pass off to ^F handler */
 763                         case 'H':       /* Home key */
 764                                 ichar = CTL_CH('a');
 765                                 esc_len = 0;
 766                                 break;  /* pass off to ^A handler */
 767                         case 'A':       /* up arrow */
 768                                 ichar = CTL_CH('p');
 769                                 esc_len = 0;
 770                                 break;  /* pass off to ^P handler */
 771                         case 'B':       /* down arrow */
 772                                 ichar = CTL_CH('n');
 773                                 esc_len = 0;
 774                                 break;  /* pass off to ^N handler */
 775                         default:
 776                                 esc_save[esc_len++] = ichar;
 777                                 cread_add_str(esc_save, esc_len, insert,
 778                                               &num, &eol_num, buf, *len);
 779                                 esc_len = 0;
 780                                 continue;
 781                         }
 782                 }
 783
 784                 switch (ichar) {
 785                 case 0x1b:
 786                         if (esc_len == 0) {
 787                                 esc_save[esc_len] = ichar;
 788                                 esc_len = 1;
 789                         } else {
 790                                 puts("impossible condition #876\n");
 791                                 esc_len = 0;
 792                         }
 793                         break;
 794
 795                 case CTL_CH('a'):
 796                         BEGINNING_OF_LINE();
 797                         break;
 798                 case CTL_CH('c'):       /* ^C - break */
 799                         *buf = '\0';    /* discard input */
 800                         return (-1);
 801                 case CTL_CH('f'):
 802                         if (num < eol_num) {
 803                                 getcmd_putch(buf[num]);
 804                                 num++;
 805                         }
 806                         break;
 807                 case CTL_CH('b'):
 808                         if (num) {
 809                                 getcmd_putch(CTL_BACKSPACE);
 810                                 num--;
 811                         }
 812                         break;
 813                 case CTL_CH('d'):
 814                         if (num < eol_num) {
 815                                 wlen = eol_num - num - 1;
 816                                 if (wlen) {
 817                                         memmove(&buf[num], &buf[num+1], wlen);
 818                                         putnstr(buf + num, wlen);
 819                                 }
 820
 821                                 getcmd_putch(' ');
 822                                 do {
 823                                         getcmd_putch(CTL_BACKSPACE);
 824                                 } while (wlen--);
 825                                 eol_num--;
 826                         }
 827                         break;
 828                 case CTL_CH('k'):
 829                         ERASE_TO_EOL();
 830                         break;
 831                 case CTL_CH('e'):
 832                         REFRESH_TO_EOL();
 833                         break;
 834                 case CTL_CH('o'):
 835                         insert = !insert;
 836                         break;
 837                 case CTL_CH('x'):
 838                 case CTL_CH('u'):
 839                         BEGINNING_OF_LINE();
 840                         ERASE_TO_EOL();
 841                         break;
 842                 case DEL:
 843                 case DEL7:
 844                 case 8:
 845                         if (num) {
 846                                 wlen = eol_num - num;
 847                                 num--;
 848                                 memmove(&buf[num], &buf[num+1], wlen);
 849                                 getcmd_putch(CTL_BACKSPACE);
 850                                 putnstr(buf + num, wlen);
 851                                 getcmd_putch(' ');
 852                                 do {
 853                                         getcmd_putch(CTL_BACKSPACE);
 854                                 } while (wlen--);
 855                                 eol_num--;
 856                         }
 857                         break;
 858                 case CTL_CH('p'):
 859                 case CTL_CH('n'):
 860                 {
 861                         char * hline;
 862
 863                         esc_len = 0;
 864
 865                         if (ichar == CTL_CH('p'))
 866                                 hline = hist_prev();
 867                         else
 868                                 hline = hist_next();
 869
 870                         if (!hline) {
 871                                 getcmd_cbeep();
 872                                 continue;
 873                         }
 874
 875                         /* nuke the current line */
 876                         /* first, go home */
 877                         BEGINNING_OF_LINE();
 878
 879                         /* erase to end of line */
 880                         ERASE_TO_EOL();
 881
 882                         /* copy new line into place and display */
 883                         strcpy(buf, hline);
 884                         eol_num = strlen(buf);
 885                         REFRESH_TO_EOL();
 886                         continue;
 887                 }
 888 #ifdef CONFIG_AUTO_COMPLETE
 889                 case '\t': {
 890                         int num2, col;
 891
 892                         /* do not autocomplete when in the middle */
 893                         if (num < eol_num) {
 894                                 getcmd_cbeep();
 895                                 break;
 896                         }
 897
 898                         buf[num] = '\0';
 899                         col = strlen(prompt) + eol_num;
 900                         num2 = num;
 901                         if (cmd_auto_complete(prompt, buf, &num2, &col)) {
 902                                 col = num2 - num;
 903                                 num += col;
 904                                 eol_num += col;
 905                         }
 906                         break;
 907                 }
 908 #endif
 909                 default:
 910                         cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
 911                         break;
 912                 }
 913         }
 914         *len = eol_num;
 915         buf[eol_num] = '\0';    /* lose the newline */
 916
 917         if (buf[0] && buf[0] != CREAD_HIST_CHAR)
 918                 cread_add_to_hist(buf);
 919         hist_cur = hist_add_idx;
 920
 921         return 0;
 922 }
 923
 924 #endif /* CONFIG_CMDLINE_EDITING */
 925
 926 /****************************************************************************/
 927
 928 /*
 929  * Prompt for input and read a line.
 930  * If  CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
 931  * time out when time goes past endtime (timebase time in ticks).
 932  * Return:      number of read characters
 933  *              -1 if break
 934  *              -2 if timed out
 935  */
 936 int readline (const char *const prompt)
 937 {
 938         /*
 939          * If console_buffer isn't 0-length the user will be prompted to modify
 940          * it instead of entering it from scratch as desired.
 941          */
 942         console_buffer[0] = '\0';
 943
 944         return readline_into_buffer(prompt, console_buffer);
 945 }
 946
 947
 948 int readline_into_buffer (const char *const prompt, char * buffer)
 949 {
 950         char *p = buffer;
 951 #ifdef CONFIG_CMDLINE_EDITING
 952         unsigned int len=MAX_CMDBUF_SIZE;
 953         int rc;
 954         static int initted = 0;
 955
 956         /*
 957          * History uses a global array which is not
 958          * writable until after relocation to RAM.
 959          * Revert to non-history version if still
 960          * running from flash.
 961          */
 962         if (gd->flags & GD_FLG_RELOC) {
 963                 if (!initted) {
 964                         hist_init();
 965                         initted = 1;
 966                 }
 967
 968                 if (prompt)
 969                         puts (prompt);
 970
 971                 rc = cread_line(prompt, p, &len);
 972                 return rc < 0 ? rc : len;
 973
 974         } else {
 975 #endif  /* CONFIG_CMDLINE_EDITING */
 976         char * p_buf = p;
 977         int     n = 0;                          /* buffer index         */
 978         int     plen = 0;                       /* prompt length        */
 979         int     col;                            /* output column cnt    */
 980         char    c;
 981
 982         /* print prompt */
 983         if (prompt) {
 984                 plen = strlen (prompt);
 985                 puts (prompt);
 986         }
 987         col = plen;
 988
 989         for (;;) {
 990 #ifdef CONFIG_BOOT_RETRY_TIME
 991                 while (!tstc()) {       /* while no incoming data */
 992                         if (retry_time >= 0 && get_ticks() > endtime)
 993                                 return (-2);    /* timed out */
 994                         WATCHDOG_RESET();
 995                 }
 996 #endif
 997                 WATCHDOG_RESET();               /* Trigger watchdog, if needed */
 998
 999 #ifdef CONFIG_SHOW_ACTIVITY
1000                 while (!tstc()) {
1001                         extern void show_activity(int arg);
1002                         show_activity(0);
1003                         WATCHDOG_RESET();
1004                 }
1005 #endif
1006                 c = getc();
1007
1008                 /*
1009                  * Special character handling
1010                  */
1011                 switch (c) {
1012                 case '\r':                              /* Enter                */
1013                 case '\n':
1014                         *p = '\0';
1015                         puts ("\r\n");
1016                         return (p - p_buf);
1017
1018                 case '\0':                              /* nul                  */
1019                         continue;
1020
1021                 case 0x03:                              /* ^C - break           */
1022                         p_buf[0] = '\0';        /* discard input */
1023                         return (-1);
1024
1025                 case 0x15:                              /* ^U - erase line      */
1026                         while (col > plen) {
1027                                 puts (erase_seq);
1028                                 --col;
1029                         }
1030                         p = p_buf;
1031                         n = 0;
1032                         continue;
1033
1034                 case 0x17:                              /* ^W - erase word      */
1035                         p=delete_char(p_buf, p, &col, &n, plen);
1036                         while ((n > 0) && (*p != ' ')) {
1037                                 p=delete_char(p_buf, p, &col, &n, plen);
1038                         }
1039                         continue;
1040
1041                 case 0x08:                              /* ^H  - backspace      */
1042                 case 0x7F:                              /* DEL - backspace      */
1043                         p=delete_char(p_buf, p, &col, &n, plen);
1044                         continue;
1045
1046                 default:
1047                         /*
1048                          * Must be a normal character then
1049                          */
1050                         if (n < CONFIG_SYS_CBSIZE-2) {
1051                                 if (c == '\t') {        /* expand TABs          */
1052 #ifdef CONFIG_AUTO_COMPLETE
1053                                         /* if auto completion triggered just continue */
1054                                         *p = '\0';
1055                                         if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
1056                                                 p = p_buf + n;  /* reset */
1057                                                 continue;
1058                                         }
1059 #endif
1060                                         puts (tab_seq+(col&07));
1061                                         col += 8 - (col&07);
1062                                 } else {
1063                                         ++col;          /* echo input           */
1064                                         putc (c);
1065                                 }
1066                                 *p++ = c;
1067                                 ++n;
1068                         } else {                        /* Buffer full          */
1069                                 putc ('\a');
1070                         }
1071                 }
1072         }
1073 #ifdef CONFIG_CMDLINE_EDITING
1074         }
1075 #endif
1076 }
1077
1078 /****************************************************************************/
1079
1080 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1081 {
1082         char *s;
1083
1084         if (*np == 0) {
1085                 return (p);
1086         }
1087
1088         if (*(--p) == '\t') {                   /* will retype the whole line   */
1089                 while (*colp > plen) {
1090                         puts (erase_seq);
1091                         (*colp)--;
1092                 }
1093                 for (s=buffer; s<p; ++s) {
1094                         if (*s == '\t') {
1095                                 puts (tab_seq+((*colp) & 07));
1096                                 *colp += 8 - ((*colp) & 07);
1097                         } else {
1098                                 ++(*colp);
1099                                 putc (*s);
1100                         }
1101                 }
1102         } else {
1103                 puts (erase_seq);
1104                 (*colp)--;
1105         }
1106         (*np)--;
1107         return (p);
1108 }
1109
1110 /****************************************************************************/
1111
1112 int parse_line (char *line, char *argv[])
1113 {
1114         int nargs = 0;
1115
1116 #ifdef DEBUG_PARSER
1117         printf ("parse_line: \"%s\"\n", line);
1118 #endif
1119         while (nargs < CONFIG_SYS_MAXARGS) {
1120
1121                 /* skip any white space */
1122                 while ((*line == ' ') || (*line == '\t')) {
1123                         ++line;
1124                 }
1125
1126                 if (*line == '\0') {    /* end of line, no more args    */
1127                         argv[nargs] = NULL;
1128 #ifdef DEBUG_PARSER
1129                 printf ("parse_line: nargs=%d\n", nargs);
1130 #endif
1131                         return (nargs);
1132                 }
1133
1134                 argv[nargs++] = line;   /* begin of argument string     */
1135
1136                 /* find end of string */
1137                 while (*line && (*line != ' ') && (*line != '\t')) {
1138                         ++line;
1139                 }
1140
1141                 if (*line == '\0') {    /* end of line, no more args    */
1142                         argv[nargs] = NULL;
1143 #ifdef DEBUG_PARSER
1144                 printf ("parse_line: nargs=%d\n", nargs);
1145 #endif
1146                         return (nargs);
1147                 }
1148
1149                 *line++ = '\0';         /* terminate current arg         */
1150         }
1151
1152         printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
1153
1154 #ifdef DEBUG_PARSER
1155         printf ("parse_line: nargs=%d\n", nargs);
1156 #endif
1157         return (nargs);
1158 }
1159
1160 /****************************************************************************/
1161
1162 static void process_macros (const char *input, char *output)
1163 {
1164         char c, prev;
1165         const char *varname_start = NULL;
1166         int inputcnt = strlen (input);
1167         int outputcnt = CONFIG_SYS_CBSIZE;
1168         int state = 0;          /* 0 = waiting for '$'  */
1169
1170         /* 1 = waiting for '(' or '{' */
1171         /* 2 = waiting for ')' or '}' */
1172         /* 3 = waiting for '''  */
1173 #ifdef DEBUG_PARSER
1174         char *output_start = output;
1175
1176         printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1177                 input);
1178 #endif
1179
1180         prev = '\0';            /* previous character   */
1181
1182         while (inputcnt && outputcnt) {
1183                 c = *input++;
1184                 inputcnt--;
1185
1186                 if (state != 3) {
1187                         /* remove one level of escape characters */
1188                         if ((c == '\\') && (prev != '\\')) {
1189                                 if (inputcnt-- == 0)
1190                                         break;
1191                                 prev = c;
1192                                 c = *input++;
1193                         }
1194                 }
1195
1196                 switch (state) {
1197                 case 0: /* Waiting for (unescaped) $    */
1198                         if ((c == '\'') && (prev != '\\')) {
1199                                 state = 3;
1200                                 break;
1201                         }
1202                         if ((c == '$') && (prev != '\\')) {
1203                                 state++;
1204                         } else {
1205                                 *(output++) = c;
1206                                 outputcnt--;
1207                         }
1208                         break;
1209                 case 1: /* Waiting for (        */
1210                         if (c == '(' || c == '{') {
1211                                 state++;
1212                                 varname_start = input;
1213                         } else {
1214                                 state = 0;
1215                                 *(output++) = '$';
1216                                 outputcnt--;
1217
1218                                 if (outputcnt) {
1219                                         *(output++) = c;
1220                                         outputcnt--;
1221                                 }
1222                         }
1223                         break;
1224                 case 2: /* Waiting for )        */
1225                         if (c == ')' || c == '}') {
1226                                 int i;
1227                                 char envname[CONFIG_SYS_CBSIZE], *envval;
1228                                 int envcnt = input - varname_start - 1; /* Varname # of chars */
1229
1230                                 /* Get the varname */
1231                                 for (i = 0; i < envcnt; i++) {
1232                                         envname[i] = varname_start[i];
1233                                 }
1234                                 envname[i] = 0;
1235
1236                                 /* Get its value */
1237                                 envval = getenv (envname);
1238
1239                                 /* Copy into the line if it exists */
1240                                 if (envval != NULL)
1241                                         while ((*envval) && outputcnt) {
1242                                                 *(output++) = *(envval++);
1243                                                 outputcnt--;
1244                                         }
1245                                 /* Look for another '$' */
1246                                 state = 0;
1247                         }
1248                         break;
1249                 case 3: /* Waiting for '        */
1250                         if ((c == '\'') && (prev != '\\')) {
1251                                 state = 0;
1252                         } else {
1253                                 *(output++) = c;
1254                                 outputcnt--;
1255                         }
1256                         break;
1257                 }
1258                 prev = c;
1259         }
1260
1261         if (outputcnt)
1262                 *output = 0;
1263         else
1264                 *(output - 1) = 0;
1265
1266 #ifdef DEBUG_PARSER
1267         printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1268                 strlen (output_start), output_start);
1269 #endif
1270 }
1271
1272 /****************************************************************************
1273  * returns:
1274  *      1  - command executed, repeatable
1275  *      0  - command executed but not repeatable, interrupted commands are
1276  *           always considered not repeatable
1277  *      -1 - not executed (unrecognized, bootd recursion or too many args)
1278  *           (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1279  *           considered unrecognized)
1280  *
1281  * WARNING:
1282  *
1283  * We must create a temporary copy of the command since the command we get
1284  * may be the result from getenv(), which returns a pointer directly to
1285  * the environment data, which may change magicly when the command we run
1286  * creates or modifies environment variables (like "bootp" does).
1287  */
1288
1289 int run_command (const char *cmd, int flag)
1290 {
1291         cmd_tbl_t *cmdtp;
1292         char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd          */
1293         char *token;                    /* start of token in cmdbuf     */
1294         char *sep;                      /* end of token (separator) in cmdbuf */
1295         char finaltoken[CONFIG_SYS_CBSIZE];
1296         char *str = cmdbuf;
1297         char *argv[CONFIG_SYS_MAXARGS + 1];     /* NULL terminated      */
1298         int argc, inquotes;
1299         int repeatable = 1;
1300         int rc = 0;
1301
1302 #ifdef DEBUG_PARSER
1303         printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1304         puts (cmd ? cmd : "NULL");      /* use puts - string may be loooong */
1305         puts ("\"\n");
1306 #endif
1307
1308         clear_ctrlc();          /* forget any previous Control C */
1309
1310         if (!cmd || !*cmd) {
1311                 return -1;      /* empty command */
1312         }
1313
1314         if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
1315                 puts ("## Command too long!\n");
1316                 return -1;
1317         }
1318
1319         strcpy (cmdbuf, cmd);
1320
1321         /* Process separators and check for invalid
1322          * repeatable commands
1323          */
1324
1325 #ifdef DEBUG_PARSER
1326         printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1327 #endif
1328         while (*str) {
1329
1330                 /*
1331                  * Find separator, or string end
1332                  * Allow simple escape of ';' by writing "\;"
1333                  */
1334                 for (inquotes = 0, sep = str; *sep; sep++) {
1335                         if ((*sep=='\'') &&
1336                             (*(sep-1) != '\\'))
1337                                 inquotes=!inquotes;
1338
1339                         if (!inquotes &&
1340                             (*sep == ';') &&    /* separator            */
1341                             ( sep != str) &&    /* past string start    */
1342                             (*(sep-1) != '\\')) /* and NOT escaped      */
1343                                 break;
1344                 }
1345
1346                 /*
1347                  * Limit the token to data between separators
1348                  */
1349                 token = str;
1350                 if (*sep) {
1351                         str = sep + 1;  /* start of command for next pass */
1352                         *sep = '\0';
1353                 }
1354                 else
1355                         str = sep;      /* no more commands for next pass */
1356 #ifdef DEBUG_PARSER
1357                 printf ("token: \"%s\"\n", token);
1358 #endif
1359
1360                 /* find macros in this token and replace them */
1361                 process_macros (token, finaltoken);
1362
1363                 /* Extract arguments */
1364                 if ((argc = parse_line (finaltoken, argv)) == 0) {
1365                         rc = -1;        /* no command at all */
1366                         continue;
1367                 }
1368
1369                 /* Look up command in command table */
1370                 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1371                         printf ("Unknown command '%s' - try 'help'\n", argv[0]);
1372                         rc = -1;        /* give up after bad command */
1373                         continue;
1374                 }
1375
1376                 /* found - check max args */
1377                 if (argc > cmdtp->maxargs) {
1378                         cmd_usage(cmdtp);
1379                         rc = -1;
1380                         continue;
1381                 }
1382
1383 #if defined(CONFIG_CMD_BOOTD)
1384                 /* avoid "bootd" recursion */
1385                 if (cmdtp->cmd == do_bootd) {
1386 #ifdef DEBUG_PARSER
1387                         printf ("[%s]\n", finaltoken);
1388 #endif
1389                         if (flag & CMD_FLAG_BOOTD) {
1390                                 puts ("'bootd' recursion detected\n");
1391                                 rc = -1;
1392                                 continue;
1393                         } else {
1394                                 flag |= CMD_FLAG_BOOTD;
1395                         }
1396                 }
1397 #endif
1398
1399                 /* OK - call function to do the command */
1400                 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
1401                         rc = -1;
1402                 }
1403
1404                 repeatable &= cmdtp->repeatable;
1405
1406                 /* Did the user stop this? */
1407                 if (had_ctrlc ())
1408                         return -1;      /* if stopped then not repeatable */
1409         }
1410
1411         return rc ? rc : repeatable;
1412 }
1413
1414 /****************************************************************************/
1415
1416 #if defined(CONFIG_CMD_RUN)
1417 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
1418 {
1419         int i;
1420
1421         if (argc < 2) {
1422                 cmd_usage(cmdtp);
1423                 return 1;
1424         }
1425
1426         for (i=1; i<argc; ++i) {
1427                 char *arg;
1428
1429                 if ((arg = getenv (argv[i])) == NULL) {
1430                         printf ("## Error: \"%s\" not defined\n", argv[i]);
1431                         return 1;
1432                 }
1433 #ifndef CONFIG_SYS_HUSH_PARSER
1434                 if (run_command (arg, flag) == -1)
1435                         return 1;
1436 #else
1437                 if (parse_string_outer(arg,
1438                     FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
1439                         return 1;
1440 #endif
1441         }
1442         return 0;
1443 }
1444 #endif