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                 printf("%*s", (int)(eol_num - num), ""); \
 647                 do {                                    \
 648                         getcmd_putch(CTL_BACKSPACE);    \
 649                 } while (--eol_num > num);              \
 650         }                                               \
 651 }
 652
 653 #define REFRESH_TO_EOL() {                      \
 654         if (num < eol_num) {                    \
 655                 wlen = eol_num - num;           \
 656                 putnstr(buf + num, wlen);       \
 657                 num = eol_num;                  \
 658         }                                       \
 659 }
 660
 661 static void cread_add_char(char ichar, int insert, unsigned long *num,
 662                unsigned long *eol_num, char *buf, unsigned long len)
 663 {
 664         unsigned long wlen;
 665
 666         /* room ??? */
 667         if (insert || *num == *eol_num) {
 668                 if (*eol_num > len - 1) {
 669                         getcmd_cbeep();
 670                         return;
 671                 }
 672                 (*eol_num)++;
 673         }
 674
 675         if (insert) {
 676                 wlen = *eol_num - *num;
 677                 if (wlen > 1) {
 678                         memmove(&buf[*num+1], &buf[*num], wlen-1);
 679                 }
 680
 681                 buf[*num] = ichar;
 682                 putnstr(buf + *num, wlen);
 683                 (*num)++;
 684                 while (--wlen) {
 685                         getcmd_putch(CTL_BACKSPACE);
 686                 }
 687         } else {
 688                 /* echo the character */
 689                 wlen = 1;
 690                 buf[*num] = ichar;
 691                 putnstr(buf + *num, wlen);
 692                 (*num)++;
 693         }
 694 }
 695
 696 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
 697               unsigned long *eol_num, char *buf, unsigned long len)
 698 {
 699         while (strsize--) {
 700                 cread_add_char(*str, insert, num, eol_num, buf, len);
 701                 str++;
 702         }
 703 }
 704
 705 static int cread_line(const char *const prompt, char *buf, unsigned int *len)
 706 {
 707         unsigned long num = 0;
 708         unsigned long eol_num = 0;
 709         unsigned long wlen;
 710         char ichar;
 711         int insert = 1;
 712         int esc_len = 0;
 713         char esc_save[8];
 714         int init_len = strlen(buf);
 715
 716         if (init_len)
 717                 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
 718
 719         while (1) {
 720 #ifdef CONFIG_BOOT_RETRY_TIME
 721                 while (!tstc()) {       /* while no incoming data */
 722                         if (retry_time >= 0 && get_ticks() > endtime)
 723                                 return (-2);    /* timed out */
 724                         WATCHDOG_RESET();
 725                 }
 726 #endif
 727
 728                 ichar = getcmd_getch();
 729
 730                 if ((ichar == '\n') || (ichar == '\r')) {
 731                         putc('\n');
 732                         break;
 733                 }
 734
 735                 /*
 736                  * handle standard linux xterm esc sequences for arrow key, etc.
 737                  */
 738                 if (esc_len != 0) {
 739                         if (esc_len == 1) {
 740                                 if (ichar == '[') {
 741                                         esc_save[esc_len] = ichar;
 742                                         esc_len = 2;
 743                                 } else {
 744                                         cread_add_str(esc_save, esc_len, insert,
 745                                                       &num, &eol_num, buf, *len);
 746                                         esc_len = 0;
 747                                 }
 748                                 continue;
 749                         }
 750
 751                         switch (ichar) {
 752
 753                         case 'D':       /* <- key */
 754                                 ichar = CTL_CH('b');
 755                                 esc_len = 0;
 756                                 break;
 757                         case 'C':       /* -> key */
 758                                 ichar = CTL_CH('f');
 759                                 esc_len = 0;
 760                                 break;  /* pass off to ^F handler */
 761                         case 'H':       /* Home key */
 762                                 ichar = CTL_CH('a');
 763                                 esc_len = 0;
 764                                 break;  /* pass off to ^A handler */
 765                         case 'A':       /* up arrow */
 766                                 ichar = CTL_CH('p');
 767                                 esc_len = 0;
 768                                 break;  /* pass off to ^P handler */
 769                         case 'B':       /* down arrow */
 770                                 ichar = CTL_CH('n');
 771                                 esc_len = 0;
 772                                 break;  /* pass off to ^N handler */
 773                         default:
 774                                 esc_save[esc_len++] = ichar;
 775                                 cread_add_str(esc_save, esc_len, insert,
 776                                               &num, &eol_num, buf, *len);
 777                                 esc_len = 0;
 778                                 continue;
 779                         }
 780                 }
 781
 782                 switch (ichar) {
 783                 case 0x1b:
 784                         if (esc_len == 0) {
 785                                 esc_save[esc_len] = ichar;
 786                                 esc_len = 1;
 787                         } else {
 788                                 puts("impossible condition #876\n");
 789                                 esc_len = 0;
 790                         }
 791                         break;
 792
 793                 case CTL_CH('a'):
 794                         BEGINNING_OF_LINE();
 795                         break;
 796                 case CTL_CH('c'):       /* ^C - break */
 797                         *buf = '\0';    /* discard input */
 798                         return (-1);
 799                 case CTL_CH('f'):
 800                         if (num < eol_num) {
 801                                 getcmd_putch(buf[num]);
 802                                 num++;
 803                         }
 804                         break;
 805                 case CTL_CH('b'):
 806                         if (num) {
 807                                 getcmd_putch(CTL_BACKSPACE);
 808                                 num--;
 809                         }
 810                         break;
 811                 case CTL_CH('d'):
 812                         if (num < eol_num) {
 813                                 wlen = eol_num - num - 1;
 814                                 if (wlen) {
 815                                         memmove(&buf[num], &buf[num+1], wlen);
 816                                         putnstr(buf + num, wlen);
 817                                 }
 818
 819                                 getcmd_putch(' ');
 820                                 do {
 821                                         getcmd_putch(CTL_BACKSPACE);
 822                                 } while (wlen--);
 823                                 eol_num--;
 824                         }
 825                         break;
 826                 case CTL_CH('k'):
 827                         ERASE_TO_EOL();
 828                         break;
 829                 case CTL_CH('e'):
 830                         REFRESH_TO_EOL();
 831                         break;
 832                 case CTL_CH('o'):
 833                         insert = !insert;
 834                         break;
 835                 case CTL_CH('x'):
 836                 case CTL_CH('u'):
 837                         BEGINNING_OF_LINE();
 838                         ERASE_TO_EOL();
 839                         break;
 840                 case DEL:
 841                 case DEL7:
 842                 case 8:
 843                         if (num) {
 844                                 wlen = eol_num - num;
 845                                 num--;
 846                                 memmove(&buf[num], &buf[num+1], wlen);
 847                                 getcmd_putch(CTL_BACKSPACE);
 848                                 putnstr(buf + num, wlen);
 849                                 getcmd_putch(' ');
 850                                 do {
 851                                         getcmd_putch(CTL_BACKSPACE);
 852                                 } while (wlen--);
 853                                 eol_num--;
 854                         }
 855                         break;
 856                 case CTL_CH('p'):
 857                 case CTL_CH('n'):
 858                 {
 859                         char * hline;
 860
 861                         esc_len = 0;
 862
 863                         if (ichar == CTL_CH('p'))
 864                                 hline = hist_prev();
 865                         else
 866                                 hline = hist_next();
 867
 868                         if (!hline) {
 869                                 getcmd_cbeep();
 870                                 continue;
 871                         }
 872
 873                         /* nuke the current line */
 874                         /* first, go home */
 875                         BEGINNING_OF_LINE();
 876
 877                         /* erase to end of line */
 878                         ERASE_TO_EOL();
 879
 880                         /* copy new line into place and display */
 881                         strcpy(buf, hline);
 882                         eol_num = strlen(buf);
 883                         REFRESH_TO_EOL();
 884                         continue;
 885                 }
 886 #ifdef CONFIG_AUTO_COMPLETE
 887                 case '\t': {
 888                         int num2, col;
 889
 890                         /* do not autocomplete when in the middle */
 891                         if (num < eol_num) {
 892                                 getcmd_cbeep();
 893                                 break;
 894                         }
 895
 896                         buf[num] = '\0';
 897                         col = strlen(prompt) + eol_num;
 898                         num2 = num;
 899                         if (cmd_auto_complete(prompt, buf, &num2, &col)) {
 900                                 col = num2 - num;
 901                                 num += col;
 902                                 eol_num += col;
 903                         }
 904                         break;
 905                 }
 906 #endif
 907                 default:
 908                         cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
 909                         break;
 910                 }
 911         }
 912         *len = eol_num;
 913         buf[eol_num] = '\0';    /* lose the newline */
 914
 915         if (buf[0] && buf[0] != CREAD_HIST_CHAR)
 916                 cread_add_to_hist(buf);
 917         hist_cur = hist_add_idx;
 918
 919         return 0;
 920 }
 921
 922 #endif /* CONFIG_CMDLINE_EDITING */
 923
 924 /****************************************************************************/
 925
 926 /*
 927  * Prompt for input and read a line.
 928  * If  CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
 929  * time out when time goes past endtime (timebase time in ticks).
 930  * Return:      number of read characters
 931  *              -1 if break
 932  *              -2 if timed out
 933  */
 934 int readline (const char *const prompt)
 935 {
 936         /*
 937          * If console_buffer isn't 0-length the user will be prompted to modify
 938          * it instead of entering it from scratch as desired.
 939          */
 940         console_buffer[0] = '\0';
 941
 942         return readline_into_buffer(prompt, console_buffer);
 943 }
 944
 945
 946 int readline_into_buffer (const char *const prompt, char * buffer)
 947 {
 948         char *p = buffer;
 949 #ifdef CONFIG_CMDLINE_EDITING
 950         unsigned int len=MAX_CMDBUF_SIZE;
 951         int rc;
 952         static int initted = 0;
 953
 954         /*
 955          * History uses a global array which is not
 956          * writable until after relocation to RAM.
 957          * Revert to non-history version if still
 958          * running from flash.
 959          */
 960         if (gd->flags & GD_FLG_RELOC) {
 961                 if (!initted) {
 962                         hist_init();
 963                         initted = 1;
 964                 }
 965
 966                 if (prompt)
 967                         puts (prompt);
 968
 969                 rc = cread_line(prompt, p, &len);
 970                 return rc < 0 ? rc : len;
 971
 972         } else {
 973 #endif  /* CONFIG_CMDLINE_EDITING */
 974         char * p_buf = p;
 975         int     n = 0;                          /* buffer index         */
 976         int     plen = 0;                       /* prompt length        */
 977         int     col;                            /* output column cnt    */
 978         char    c;
 979
 980         /* print prompt */
 981         if (prompt) {
 982                 plen = strlen (prompt);
 983                 puts (prompt);
 984         }
 985         col = plen;
 986
 987         for (;;) {
 988 #ifdef CONFIG_BOOT_RETRY_TIME
 989                 while (!tstc()) {       /* while no incoming data */
 990                         if (retry_time >= 0 && get_ticks() > endtime)
 991                                 return (-2);    /* timed out */
 992                         WATCHDOG_RESET();
 993                 }
 994 #endif
 995                 WATCHDOG_RESET();               /* Trigger watchdog, if needed */
 996
 997 #ifdef CONFIG_SHOW_ACTIVITY
 998                 while (!tstc()) {
 999                         extern void show_activity(int arg);
1000                         show_activity(0);
1001                         WATCHDOG_RESET();
1002                 }
1003 #endif
1004                 c = getc();
1005
1006                 /*
1007                  * Special character handling
1008                  */
1009                 switch (c) {
1010                 case '\r':                              /* Enter                */
1011                 case '\n':
1012                         *p = '\0';
1013                         puts ("\r\n");
1014                         return (p - p_buf);
1015
1016                 case '\0':                              /* nul                  */
1017                         continue;
1018
1019                 case 0x03:                              /* ^C - break           */
1020                         p_buf[0] = '\0';        /* discard input */
1021                         return (-1);
1022
1023                 case 0x15:                              /* ^U - erase line      */
1024                         while (col > plen) {
1025                                 puts (erase_seq);
1026                                 --col;
1027                         }
1028                         p = p_buf;
1029                         n = 0;
1030                         continue;
1031
1032                 case 0x17:                              /* ^W - erase word      */
1033                         p=delete_char(p_buf, p, &col, &n, plen);
1034                         while ((n > 0) && (*p != ' ')) {
1035                                 p=delete_char(p_buf, p, &col, &n, plen);
1036                         }
1037                         continue;
1038
1039                 case 0x08:                              /* ^H  - backspace      */
1040                 case 0x7F:                              /* DEL - backspace      */
1041                         p=delete_char(p_buf, p, &col, &n, plen);
1042                         continue;
1043
1044                 default:
1045                         /*
1046                          * Must be a normal character then
1047                          */
1048                         if (n < CONFIG_SYS_CBSIZE-2) {
1049                                 if (c == '\t') {        /* expand TABs          */
1050 #ifdef CONFIG_AUTO_COMPLETE
1051                                         /* if auto completion triggered just continue */
1052                                         *p = '\0';
1053                                         if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
1054                                                 p = p_buf + n;  /* reset */
1055                                                 continue;
1056                                         }
1057 #endif
1058                                         puts (tab_seq+(col&07));
1059                                         col += 8 - (col&07);
1060                                 } else {
1061                                         ++col;          /* echo input           */
1062                                         putc (c);
1063                                 }
1064                                 *p++ = c;
1065                                 ++n;
1066                         } else {                        /* Buffer full          */
1067                                 putc ('\a');
1068                         }
1069                 }
1070         }
1071 #ifdef CONFIG_CMDLINE_EDITING
1072         }
1073 #endif
1074 }
1075
1076 /****************************************************************************/
1077
1078 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1079 {
1080         char *s;
1081
1082         if (*np == 0) {
1083                 return (p);
1084         }
1085
1086         if (*(--p) == '\t') {                   /* will retype the whole line   */
1087                 while (*colp > plen) {
1088                         puts (erase_seq);
1089                         (*colp)--;
1090                 }
1091                 for (s=buffer; s<p; ++s) {
1092                         if (*s == '\t') {
1093                                 puts (tab_seq+((*colp) & 07));
1094                                 *colp += 8 - ((*colp) & 07);
1095                         } else {
1096                                 ++(*colp);
1097                                 putc (*s);
1098                         }
1099                 }
1100         } else {
1101                 puts (erase_seq);
1102                 (*colp)--;
1103         }
1104         (*np)--;
1105         return (p);
1106 }
1107
1108 /****************************************************************************/
1109
1110 int parse_line (char *line, char *argv[])
1111 {
1112         int nargs = 0;
1113
1114 #ifdef DEBUG_PARSER
1115         printf ("parse_line: \"%s\"\n", line);
1116 #endif
1117         while (nargs < CONFIG_SYS_MAXARGS) {
1118
1119                 /* skip any white space */
1120                 while ((*line == ' ') || (*line == '\t')) {
1121                         ++line;
1122                 }
1123
1124                 if (*line == '\0') {    /* end of line, no more args    */
1125                         argv[nargs] = NULL;
1126 #ifdef DEBUG_PARSER
1127                 printf ("parse_line: nargs=%d\n", nargs);
1128 #endif
1129                         return (nargs);
1130                 }
1131
1132                 argv[nargs++] = line;   /* begin of argument string     */
1133
1134                 /* find end of string */
1135                 while (*line && (*line != ' ') && (*line != '\t')) {
1136                         ++line;
1137                 }
1138
1139                 if (*line == '\0') {    /* end of line, no more args    */
1140                         argv[nargs] = NULL;
1141 #ifdef DEBUG_PARSER
1142                 printf ("parse_line: nargs=%d\n", nargs);
1143 #endif
1144                         return (nargs);
1145                 }
1146
1147                 *line++ = '\0';         /* terminate current arg         */
1148         }
1149
1150         printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
1151
1152 #ifdef DEBUG_PARSER
1153         printf ("parse_line: nargs=%d\n", nargs);
1154 #endif
1155         return (nargs);
1156 }
1157
1158 /****************************************************************************/
1159
1160 static void process_macros (const char *input, char *output)
1161 {
1162         char c, prev;
1163         const char *varname_start = NULL;
1164         int inputcnt = strlen (input);
1165         int outputcnt = CONFIG_SYS_CBSIZE;
1166         int state = 0;          /* 0 = waiting for '$'  */
1167
1168         /* 1 = waiting for '(' or '{' */
1169         /* 2 = waiting for ')' or '}' */
1170         /* 3 = waiting for '''  */
1171 #ifdef DEBUG_PARSER
1172         char *output_start = output;
1173
1174         printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1175                 input);
1176 #endif
1177
1178         prev = '\0';            /* previous character   */
1179
1180         while (inputcnt && outputcnt) {
1181                 c = *input++;
1182                 inputcnt--;
1183
1184                 if (state != 3) {
1185                         /* remove one level of escape characters */
1186                         if ((c == '\\') && (prev != '\\')) {
1187                                 if (inputcnt-- == 0)
1188                                         break;
1189                                 prev = c;
1190                                 c = *input++;
1191                         }
1192                 }
1193
1194                 switch (state) {
1195                 case 0: /* Waiting for (unescaped) $    */
1196                         if ((c == '\'') && (prev != '\\')) {
1197                                 state = 3;
1198                                 break;
1199                         }
1200                         if ((c == '$') && (prev != '\\')) {
1201                                 state++;
1202                         } else {
1203                                 *(output++) = c;
1204                                 outputcnt--;
1205                         }
1206                         break;
1207                 case 1: /* Waiting for (        */
1208                         if (c == '(' || c == '{') {
1209                                 state++;
1210                                 varname_start = input;
1211                         } else {
1212                                 state = 0;
1213                                 *(output++) = '$';
1214                                 outputcnt--;
1215
1216                                 if (outputcnt) {
1217                                         *(output++) = c;
1218                                         outputcnt--;
1219                                 }
1220                         }
1221                         break;
1222                 case 2: /* Waiting for )        */
1223                         if (c == ')' || c == '}') {
1224                                 int i;
1225                                 char envname[CONFIG_SYS_CBSIZE], *envval;
1226                                 int envcnt = input - varname_start - 1; /* Varname # of chars */
1227
1228                                 /* Get the varname */
1229                                 for (i = 0; i < envcnt; i++) {
1230                                         envname[i] = varname_start[i];
1231                                 }
1232                                 envname[i] = 0;
1233
1234                                 /* Get its value */
1235                                 envval = getenv (envname);
1236
1237                                 /* Copy into the line if it exists */
1238                                 if (envval != NULL)
1239                                         while ((*envval) && outputcnt) {
1240                                                 *(output++) = *(envval++);
1241                                                 outputcnt--;
1242                                         }
1243                                 /* Look for another '$' */
1244                                 state = 0;
1245                         }
1246                         break;
1247                 case 3: /* Waiting for '        */
1248                         if ((c == '\'') && (prev != '\\')) {
1249                                 state = 0;
1250                         } else {
1251                                 *(output++) = c;
1252                                 outputcnt--;
1253                         }
1254                         break;
1255                 }
1256                 prev = c;
1257         }
1258
1259         if (outputcnt)
1260                 *output = 0;
1261         else
1262                 *(output - 1) = 0;
1263
1264 #ifdef DEBUG_PARSER
1265         printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1266                 strlen (output_start), output_start);
1267 #endif
1268 }
1269
1270 /****************************************************************************
1271  * returns:
1272  *      1  - command executed, repeatable
1273  *      0  - command executed but not repeatable, interrupted commands are
1274  *           always considered not repeatable
1275  *      -1 - not executed (unrecognized, bootd recursion or too many args)
1276  *           (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1277  *           considered unrecognized)
1278  *
1279  * WARNING:
1280  *
1281  * We must create a temporary copy of the command since the command we get
1282  * may be the result from getenv(), which returns a pointer directly to
1283  * the environment data, which may change magicly when the command we run
1284  * creates or modifies environment variables (like "bootp" does).
1285  */
1286
1287 int run_command (const char *cmd, int flag)
1288 {
1289         cmd_tbl_t *cmdtp;
1290         char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd          */
1291         char *token;                    /* start of token in cmdbuf     */
1292         char *sep;                      /* end of token (separator) in cmdbuf */
1293         char finaltoken[CONFIG_SYS_CBSIZE];
1294         char *str = cmdbuf;
1295         char *argv[CONFIG_SYS_MAXARGS + 1];     /* NULL terminated      */
1296         int argc, inquotes;
1297         int repeatable = 1;
1298         int rc = 0;
1299
1300 #ifdef DEBUG_PARSER
1301         printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1302         puts (cmd ? cmd : "NULL");      /* use puts - string may be loooong */
1303         puts ("\"\n");
1304 #endif
1305
1306         clear_ctrlc();          /* forget any previous Control C */
1307
1308         if (!cmd || !*cmd) {
1309                 return -1;      /* empty command */
1310         }
1311
1312         if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
1313                 puts ("## Command too long!\n");
1314                 return -1;
1315         }
1316
1317         strcpy (cmdbuf, cmd);
1318
1319         /* Process separators and check for invalid
1320          * repeatable commands
1321          */
1322
1323 #ifdef DEBUG_PARSER
1324         printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1325 #endif
1326         while (*str) {
1327
1328                 /*
1329                  * Find separator, or string end
1330                  * Allow simple escape of ';' by writing "\;"
1331                  */
1332                 for (inquotes = 0, sep = str; *sep; sep++) {
1333                         if ((*sep=='\'') &&
1334                             (*(sep-1) != '\\'))
1335                                 inquotes=!inquotes;
1336
1337                         if (!inquotes &&
1338                             (*sep == ';') &&    /* separator            */
1339                             ( sep != str) &&    /* past string start    */
1340                             (*(sep-1) != '\\')) /* and NOT escaped      */
1341                                 break;
1342                 }
1343
1344                 /*
1345                  * Limit the token to data between separators
1346                  */
1347                 token = str;
1348                 if (*sep) {
1349                         str = sep + 1;  /* start of command for next pass */
1350                         *sep = '\0';
1351                 }
1352                 else
1353                         str = sep;      /* no more commands for next pass */
1354 #ifdef DEBUG_PARSER
1355                 printf ("token: \"%s\"\n", token);
1356 #endif
1357
1358                 /* find macros in this token and replace them */
1359                 process_macros (token, finaltoken);
1360
1361                 /* Extract arguments */
1362                 if ((argc = parse_line (finaltoken, argv)) == 0) {
1363                         rc = -1;        /* no command at all */
1364                         continue;
1365                 }
1366
1367                 /* Look up command in command table */
1368                 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1369                         printf ("Unknown command '%s' - try 'help'\n", argv[0]);
1370                         rc = -1;        /* give up after bad command */
1371                         continue;
1372                 }
1373
1374                 /* found - check max args */
1375                 if (argc > cmdtp->maxargs) {
1376                         cmd_usage(cmdtp);
1377                         rc = -1;
1378                         continue;
1379                 }
1380
1381 #if defined(CONFIG_CMD_BOOTD)
1382                 /* avoid "bootd" recursion */
1383                 if (cmdtp->cmd == do_bootd) {
1384 #ifdef DEBUG_PARSER
1385                         printf ("[%s]\n", finaltoken);
1386 #endif
1387                         if (flag & CMD_FLAG_BOOTD) {
1388                                 puts ("'bootd' recursion detected\n");
1389                                 rc = -1;
1390                                 continue;
1391                         } else {
1392                                 flag |= CMD_FLAG_BOOTD;
1393                         }
1394                 }
1395 #endif
1396
1397                 /* OK - call function to do the command */
1398                 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
1399                         rc = -1;
1400                 }
1401
1402                 repeatable &= cmdtp->repeatable;
1403
1404                 /* Did the user stop this? */
1405                 if (had_ctrlc ())
1406                         return -1;      /* if stopped then not repeatable */
1407         }
1408
1409         return rc ? rc : repeatable;
1410 }
1411
1412 /****************************************************************************/
1413
1414 #if defined(CONFIG_CMD_RUN)
1415 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
1416 {
1417         int i;
1418
1419         if (argc < 2)
1420                 return cmd_usage(cmdtp);
1421
1422         for (i=1; i<argc; ++i) {
1423                 char *arg;
1424
1425                 if ((arg = getenv (argv[i])) == NULL) {
1426                         printf ("## Error: \"%s\" not defined\n", argv[i]);
1427                         return 1;
1428                 }
1429 #ifndef CONFIG_SYS_HUSH_PARSER
1430                 if (run_command (arg, flag) == -1)
1431                         return 1;
1432 #else
1433                 if (parse_string_outer(arg,
1434                     FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
1435                         return 1;
1436 #endif
1437         }
1438         return 0;
1439 }
1440 #endif