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 inline 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 *argv[]);               /* for do_reset() prototype */
  55 #endif
  56
  57 extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *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];          /* 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 #if defined(CONFIG_UPDATE_TFTP)
 309         update_tftp ();
 310 #endif /* CONFIG_UPDATE_TFTP */
 311
 312 #ifdef CONFIG_BOOTCOUNT_LIMIT
 313         bootcount = bootcount_load();
 314         bootcount++;
 315         bootcount_store (bootcount);
 316         sprintf (bcs_set, "%lu", bootcount);
 317         setenv ("bootcount", bcs_set);
 318         bcs = getenv ("bootlimit");
 319         bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
 320 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 321
 322 #ifdef CONFIG_MODEM_SUPPORT
 323         debug ("DEBUG: main_loop:   do_mdm_init=%d\n", do_mdm_init);
 324         if (do_mdm_init) {
 325                 char *str = strdup(getenv("mdm_cmd"));
 326                 setenv ("preboot", str);  /* set or delete definition */
 327                 if (str != NULL)
 328                         free (str);
 329                 mdm_init(); /* wait for modem connection */
 330         }
 331 #endif  /* CONFIG_MODEM_SUPPORT */
 332
 333 #ifdef CONFIG_VERSION_VARIABLE
 334         {
 335                 extern char version_string[];
 336
 337                 setenv ("ver", version_string);  /* set version variable */
 338         }
 339 #endif /* CONFIG_VERSION_VARIABLE */
 340
 341 #ifdef CONFIG_SYS_HUSH_PARSER
 342         u_boot_hush_start ();
 343 #endif
 344
 345 #if defined(CONFIG_HUSH_INIT_VAR)
 346         hush_init_var ();
 347 #endif
 348
 349 #ifdef CONFIG_AUTO_COMPLETE
 350         install_auto_complete();
 351 #endif
 352
 353 #ifdef CONFIG_PREBOOT
 354         if ((p = getenv ("preboot")) != NULL) {
 355 # ifdef CONFIG_AUTOBOOT_KEYED
 356                 int prev = disable_ctrlc(1);    /* disable Control C checking */
 357 # endif
 358
 359 # ifndef CONFIG_SYS_HUSH_PARSER
 360                 run_command (p, 0);
 361 # else
 362                 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
 363                                     FLAG_EXIT_FROM_LOOP);
 364 # endif
 365
 366 # ifdef CONFIG_AUTOBOOT_KEYED
 367                 disable_ctrlc(prev);    /* restore Control C checking */
 368 # endif
 369         }
 370 #endif /* CONFIG_PREBOOT */
 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 #ifdef CONFIG_AMIGAONEG3SE
 433         {
 434             extern void video_banner(void);
 435             video_banner();
 436         }
 437 #endif
 438
 439         /*
 440          * Main Loop for Monitor Command Processing
 441          */
 442 #ifdef CONFIG_SYS_HUSH_PARSER
 443         parse_file_outer();
 444         /* This point is never reached */
 445         for (;;);
 446 #else
 447         for (;;) {
 448 #ifdef CONFIG_BOOT_RETRY_TIME
 449                 if (rc >= 0) {
 450                         /* Saw enough of a valid command to
 451                          * restart the timeout.
 452                          */
 453                         reset_cmd_timeout();
 454                 }
 455 #endif
 456                 len = readline (CONFIG_SYS_PROMPT);
 457
 458                 flag = 0;       /* assume no special flags for now */
 459                 if (len > 0)
 460                         strcpy (lastcommand, console_buffer);
 461                 else if (len == 0)
 462                         flag |= CMD_FLAG_REPEAT;
 463 #ifdef CONFIG_BOOT_RETRY_TIME
 464                 else if (len == -2) {
 465                         /* -2 means timed out, retry autoboot
 466                          */
 467                         puts ("\nTimed out waiting for command\n");
 468 # ifdef CONFIG_RESET_TO_RETRY
 469                         /* Reinit board to run initialization code again */
 470                         do_reset (NULL, 0, 0, NULL);
 471 # else
 472                         return;         /* retry autoboot */
 473 # endif
 474                 }
 475 #endif
 476
 477                 if (len == -1)
 478                         puts ("<INTERRUPT>\n");
 479                 else
 480                         rc = run_command (lastcommand, flag);
 481
 482                 if (rc <= 0) {
 483                         /* invalid command or not repeatable, forget it */
 484                         lastcommand[0] = 0;
 485                 }
 486         }
 487 #endif /*CONFIG_SYS_HUSH_PARSER*/
 488 }
 489
 490 #ifdef CONFIG_BOOT_RETRY_TIME
 491 /***************************************************************************
 492  * initialize command line timeout
 493  */
 494 void init_cmd_timeout(void)
 495 {
 496         char *s = getenv ("bootretry");
 497
 498         if (s != NULL)
 499                 retry_time = (int)simple_strtol(s, NULL, 10);
 500         else
 501                 retry_time =  CONFIG_BOOT_RETRY_TIME;
 502
 503         if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
 504                 retry_time = CONFIG_BOOT_RETRY_MIN;
 505 }
 506
 507 /***************************************************************************
 508  * reset command line timeout to retry_time seconds
 509  */
 510 void reset_cmd_timeout(void)
 511 {
 512         endtime = endtick(retry_time);
 513 }
 514 #endif
 515
 516 #ifdef CONFIG_CMDLINE_EDITING
 517
 518 /*
 519  * cmdline-editing related codes from vivi.
 520  * Author: Janghoon Lyu <nandy@mizi.com>
 521  */
 522
 523 #define putnstr(str,n)  do {                    \
 524                 printf ("%.*s", (int)n, str);   \
 525         } while (0)
 526
 527 #define CTL_CH(c)               ((c) - 'a' + 1)
 528
 529 #define MAX_CMDBUF_SIZE         256
 530
 531 #define CTL_BACKSPACE           ('\b')
 532 #define DEL                     ((char)255)
 533 #define DEL7                    ((char)127)
 534 #define CREAD_HIST_CHAR         ('!')
 535
 536 #define getcmd_putch(ch)        putc(ch)
 537 #define getcmd_getch()          getc()
 538 #define getcmd_cbeep()          getcmd_putch('\a')
 539
 540 #define HIST_MAX                20
 541 #define HIST_SIZE               MAX_CMDBUF_SIZE
 542
 543 static int hist_max = 0;
 544 static int hist_add_idx = 0;
 545 static int hist_cur = -1;
 546 unsigned hist_num = 0;
 547
 548 char* hist_list[HIST_MAX];
 549 char hist_lines[HIST_MAX][HIST_SIZE];
 550
 551 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
 552
 553 static void hist_init(void)
 554 {
 555         int i;
 556
 557         hist_max = 0;
 558         hist_add_idx = 0;
 559         hist_cur = -1;
 560         hist_num = 0;
 561
 562         for (i = 0; i < HIST_MAX; i++) {
 563                 hist_list[i] = hist_lines[i];
 564                 hist_list[i][0] = '\0';
 565         }
 566 }
 567
 568 static void cread_add_to_hist(char *line)
 569 {
 570         strcpy(hist_list[hist_add_idx], line);
 571
 572         if (++hist_add_idx >= HIST_MAX)
 573                 hist_add_idx = 0;
 574
 575         if (hist_add_idx > hist_max)
 576                 hist_max = hist_add_idx;
 577
 578         hist_num++;
 579 }
 580
 581 static char* hist_prev(void)
 582 {
 583         char *ret;
 584         int old_cur;
 585
 586         if (hist_cur < 0)
 587                 return NULL;
 588
 589         old_cur = hist_cur;
 590         if (--hist_cur < 0)
 591                 hist_cur = hist_max;
 592
 593         if (hist_cur == hist_add_idx) {
 594                 hist_cur = old_cur;
 595                 ret = NULL;
 596         } else
 597                 ret = hist_list[hist_cur];
 598
 599         return (ret);
 600 }
 601
 602 static char* hist_next(void)
 603 {
 604         char *ret;
 605
 606         if (hist_cur < 0)
 607                 return NULL;
 608
 609         if (hist_cur == hist_add_idx)
 610                 return NULL;
 611
 612         if (++hist_cur > hist_max)
 613                 hist_cur = 0;
 614
 615         if (hist_cur == hist_add_idx) {
 616                 ret = "";
 617         } else
 618                 ret = hist_list[hist_cur];
 619
 620         return (ret);
 621 }
 622
 623 #ifndef CONFIG_CMDLINE_EDITING
 624 static void cread_print_hist_list(void)
 625 {
 626         int i;
 627         unsigned long n;
 628
 629         n = hist_num - hist_max;
 630
 631         i = hist_add_idx + 1;
 632         while (1) {
 633                 if (i > hist_max)
 634                         i = 0;
 635                 if (i == hist_add_idx)
 636                         break;
 637                 printf("%s\n", hist_list[i]);
 638                 n++;
 639                 i++;
 640         }
 641 }
 642 #endif /* CONFIG_CMDLINE_EDITING */
 643
 644 #define BEGINNING_OF_LINE() {                   \
 645         while (num) {                           \
 646                 getcmd_putch(CTL_BACKSPACE);    \
 647                 num--;                          \
 648         }                                       \
 649 }
 650
 651 #define ERASE_TO_EOL() {                                \
 652         if (num < eol_num) {                            \
 653                 int tmp;                                \
 654                 for (tmp = num; tmp < eol_num; tmp++)   \
 655                         getcmd_putch(' ');              \
 656                 while (tmp-- > num)                     \
 657                         getcmd_putch(CTL_BACKSPACE);    \
 658                 eol_num = num;                          \
 659         }                                               \
 660 }
 661
 662 #define REFRESH_TO_EOL() {                      \
 663         if (num < eol_num) {                    \
 664                 wlen = eol_num - num;           \
 665                 putnstr(buf + num, wlen);       \
 666                 num = eol_num;                  \
 667         }                                       \
 668 }
 669
 670 static void cread_add_char(char ichar, int insert, unsigned long *num,
 671                unsigned long *eol_num, char *buf, unsigned long len)
 672 {
 673         unsigned long wlen;
 674
 675         /* room ??? */
 676         if (insert || *num == *eol_num) {
 677                 if (*eol_num > len - 1) {
 678                         getcmd_cbeep();
 679                         return;
 680                 }
 681                 (*eol_num)++;
 682         }
 683
 684         if (insert) {
 685                 wlen = *eol_num - *num;
 686                 if (wlen > 1) {
 687                         memmove(&buf[*num+1], &buf[*num], wlen-1);
 688                 }
 689
 690                 buf[*num] = ichar;
 691                 putnstr(buf + *num, wlen);
 692                 (*num)++;
 693                 while (--wlen) {
 694                         getcmd_putch(CTL_BACKSPACE);
 695                 }
 696         } else {
 697                 /* echo the character */
 698                 wlen = 1;
 699                 buf[*num] = ichar;
 700                 putnstr(buf + *num, wlen);
 701                 (*num)++;
 702         }
 703 }
 704
 705 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
 706               unsigned long *eol_num, char *buf, unsigned long len)
 707 {
 708         while (strsize--) {
 709                 cread_add_char(*str, insert, num, eol_num, buf, len);
 710                 str++;
 711         }
 712 }
 713
 714 static int cread_line(const char *const prompt, char *buf, unsigned int *len)
 715 {
 716         unsigned long num = 0;
 717         unsigned long eol_num = 0;
 718         unsigned long rlen;
 719         unsigned long wlen;
 720         char ichar;
 721         int insert = 1;
 722         int esc_len = 0;
 723         int rc = 0;
 724         char esc_save[8];
 725
 726         while (1) {
 727                 rlen = 1;
 728 #ifdef CONFIG_BOOT_RETRY_TIME
 729                 while (!tstc()) {       /* while no incoming data */
 730                         if (retry_time >= 0 && get_ticks() > endtime)
 731                                 return (-2);    /* timed out */
 732                 }
 733 #endif
 734
 735                 ichar = getcmd_getch();
 736
 737                 if ((ichar == '\n') || (ichar == '\r')) {
 738                         putc('\n');
 739                         break;
 740                 }
 741
 742                 /*
 743                  * handle standard linux xterm esc sequences for arrow key, etc.
 744                  */
 745                 if (esc_len != 0) {
 746                         if (esc_len == 1) {
 747                                 if (ichar == '[') {
 748                                         esc_save[esc_len] = ichar;
 749                                         esc_len = 2;
 750                                 } else {
 751                                         cread_add_str(esc_save, esc_len, insert,
 752                                                       &num, &eol_num, buf, *len);
 753                                         esc_len = 0;
 754                                 }
 755                                 continue;
 756                         }
 757
 758                         switch (ichar) {
 759
 760                         case 'D':       /* <- key */
 761                                 ichar = CTL_CH('b');
 762                                 esc_len = 0;
 763                                 break;
 764                         case 'C':       /* -> key */
 765                                 ichar = CTL_CH('f');
 766                                 esc_len = 0;
 767                                 break;  /* pass off to ^F handler */
 768                         case 'H':       /* Home key */
 769                                 ichar = CTL_CH('a');
 770                                 esc_len = 0;
 771                                 break;  /* pass off to ^A handler */
 772                         case 'A':       /* up arrow */
 773                                 ichar = CTL_CH('p');
 774                                 esc_len = 0;
 775                                 break;  /* pass off to ^P handler */
 776                         case 'B':       /* down arrow */
 777                                 ichar = CTL_CH('n');
 778                                 esc_len = 0;
 779                                 break;  /* pass off to ^N handler */
 780                         default:
 781                                 esc_save[esc_len++] = ichar;
 782                                 cread_add_str(esc_save, esc_len, insert,
 783                                               &num, &eol_num, buf, *len);
 784                                 esc_len = 0;
 785                                 continue;
 786                         }
 787                 }
 788
 789                 switch (ichar) {
 790                 case 0x1b:
 791                         if (esc_len == 0) {
 792                                 esc_save[esc_len] = ichar;
 793                                 esc_len = 1;
 794                         } else {
 795                                 puts("impossible condition #876\n");
 796                                 esc_len = 0;
 797                         }
 798                         break;
 799
 800                 case CTL_CH('a'):
 801                         BEGINNING_OF_LINE();
 802                         break;
 803                 case CTL_CH('c'):       /* ^C - break */
 804                         *buf = '\0';    /* discard input */
 805                         return (-1);
 806                 case CTL_CH('f'):
 807                         if (num < eol_num) {
 808                                 getcmd_putch(buf[num]);
 809                                 num++;
 810                         }
 811                         break;
 812                 case CTL_CH('b'):
 813                         if (num) {
 814                                 getcmd_putch(CTL_BACKSPACE);
 815                                 num--;
 816                         }
 817                         break;
 818                 case CTL_CH('d'):
 819                         if (num < eol_num) {
 820                                 wlen = eol_num - num - 1;
 821                                 if (wlen) {
 822                                         memmove(&buf[num], &buf[num+1], wlen);
 823                                         putnstr(buf + num, wlen);
 824                                 }
 825
 826                                 getcmd_putch(' ');
 827                                 do {
 828                                         getcmd_putch(CTL_BACKSPACE);
 829                                 } while (wlen--);
 830                                 eol_num--;
 831                         }
 832                         break;
 833                 case CTL_CH('k'):
 834                         ERASE_TO_EOL();
 835                         break;
 836                 case CTL_CH('e'):
 837                         REFRESH_TO_EOL();
 838                         break;
 839                 case CTL_CH('o'):
 840                         insert = !insert;
 841                         break;
 842                 case CTL_CH('x'):
 843                 case CTL_CH('u'):
 844                         BEGINNING_OF_LINE();
 845                         ERASE_TO_EOL();
 846                         break;
 847                 case DEL:
 848                 case DEL7:
 849                 case 8:
 850                         if (num) {
 851                                 wlen = eol_num - num;
 852                                 num--;
 853                                 memmove(&buf[num], &buf[num+1], wlen);
 854                                 getcmd_putch(CTL_BACKSPACE);
 855                                 putnstr(buf + num, wlen);
 856                                 getcmd_putch(' ');
 857                                 do {
 858                                         getcmd_putch(CTL_BACKSPACE);
 859                                 } while (wlen--);
 860                                 eol_num--;
 861                         }
 862                         break;
 863                 case CTL_CH('p'):
 864                 case CTL_CH('n'):
 865                 {
 866                         char * hline;
 867
 868                         esc_len = 0;
 869
 870                         if (ichar == CTL_CH('p'))
 871                                 hline = hist_prev();
 872                         else
 873                                 hline = hist_next();
 874
 875                         if (!hline) {
 876                                 getcmd_cbeep();
 877                                 continue;
 878                         }
 879
 880                         /* nuke the current line */
 881                         /* first, go home */
 882                         BEGINNING_OF_LINE();
 883
 884                         /* erase to end of line */
 885                         ERASE_TO_EOL();
 886
 887                         /* copy new line into place and display */
 888                         strcpy(buf, hline);
 889                         eol_num = strlen(buf);
 890                         REFRESH_TO_EOL();
 891                         continue;
 892                 }
 893 #ifdef CONFIG_AUTO_COMPLETE
 894                 case '\t': {
 895                         int num2, col;
 896
 897                         /* do not autocomplete when in the middle */
 898                         if (num < eol_num) {
 899                                 getcmd_cbeep();
 900                                 break;
 901                         }
 902
 903                         buf[num] = '\0';
 904                         col = strlen(prompt) + eol_num;
 905                         num2 = num;
 906                         if (cmd_auto_complete(prompt, buf, &num2, &col)) {
 907                                 col = num2 - num;
 908                                 num += col;
 909                                 eol_num += col;
 910                         }
 911                         break;
 912                 }
 913 #endif
 914                 default:
 915                         cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
 916                         break;
 917                 }
 918         }
 919         *len = eol_num;
 920         buf[eol_num] = '\0';    /* lose the newline */
 921
 922         if (buf[0] && buf[0] != CREAD_HIST_CHAR)
 923                 cread_add_to_hist(buf);
 924         hist_cur = hist_add_idx;
 925
 926         return (rc);
 927 }
 928
 929 #endif /* CONFIG_CMDLINE_EDITING */
 930
 931 /****************************************************************************/
 932
 933 /*
 934  * Prompt for input and read a line.
 935  * If  CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
 936  * time out when time goes past endtime (timebase time in ticks).
 937  * Return:      number of read characters
 938  *              -1 if break
 939  *              -2 if timed out
 940  */
 941 int readline (const char *const prompt)
 942 {
 943         return readline_into_buffer(prompt, console_buffer);
 944 }
 945
 946
 947 int readline_into_buffer (const char *const prompt, char * buffer)
 948 {
 949         char *p = buffer;
 950 #ifdef CONFIG_CMDLINE_EDITING
 951         unsigned int len=MAX_CMDBUF_SIZE;
 952         int rc;
 953         static int initted = 0;
 954
 955         /*
 956          * History uses a global array which is not
 957          * writable until after relocation to RAM.
 958          * Revert to non-history version if still
 959          * running from flash.
 960          */
 961         if (gd->flags & GD_FLG_RELOC) {
 962                 if (!initted) {
 963                         hist_init();
 964                         initted = 1;
 965                 }
 966
 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                 }
 993 #endif
 994                 WATCHDOG_RESET();               /* Trigger watchdog, if needed */
 995
 996 #ifdef CONFIG_SHOW_ACTIVITY
 997                 while (!tstc()) {
 998                         extern void show_activity(int arg);
 999                         show_activity(0);
1000                 }
1001 #endif
1002                 c = getc();
1003
1004                 /*
1005                  * Special character handling
1006                  */
1007                 switch (c) {
1008                 case '\r':                              /* Enter                */
1009                 case '\n':
1010                         *p = '\0';
1011                         puts ("\r\n");
1012                         return (p - p_buf);
1013
1014                 case '\0':                              /* nul                  */
1015                         continue;
1016
1017                 case 0x03:                              /* ^C - break           */
1018                         p_buf[0] = '\0';        /* discard input */
1019                         return (-1);
1020
1021                 case 0x15:                              /* ^U - erase line      */
1022                         while (col > plen) {
1023                                 puts (erase_seq);
1024                                 --col;
1025                         }
1026                         p = p_buf;
1027                         n = 0;
1028                         continue;
1029
1030                 case 0x17:                              /* ^W - erase word      */
1031                         p=delete_char(p_buf, p, &col, &n, plen);
1032                         while ((n > 0) && (*p != ' ')) {
1033                                 p=delete_char(p_buf, p, &col, &n, plen);
1034                         }
1035                         continue;
1036
1037                 case 0x08:                              /* ^H  - backspace      */
1038                 case 0x7F:                              /* DEL - backspace      */
1039                         p=delete_char(p_buf, p, &col, &n, plen);
1040                         continue;
1041
1042                 default:
1043                         /*
1044                          * Must be a normal character then
1045                          */
1046                         if (n < CONFIG_SYS_CBSIZE-2) {
1047                                 if (c == '\t') {        /* expand TABs          */
1048 #ifdef CONFIG_AUTO_COMPLETE
1049                                         /* if auto completion triggered just continue */
1050                                         *p = '\0';
1051                                         if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
1052                                                 p = p_buf + n;  /* reset */
1053                                                 continue;
1054                                         }
1055 #endif
1056                                         puts (tab_seq+(col&07));
1057                                         col += 8 - (col&07);
1058                                 } else {
1059                                         ++col;          /* echo input           */
1060                                         putc (c);
1061                                 }
1062                                 *p++ = c;
1063                                 ++n;
1064                         } else {                        /* Buffer full          */
1065                                 putc ('\a');
1066                         }
1067                 }
1068         }
1069 #ifdef CONFIG_CMDLINE_EDITING
1070         }
1071 #endif
1072 }
1073
1074 /****************************************************************************/
1075
1076 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1077 {
1078         char *s;
1079
1080         if (*np == 0) {
1081                 return (p);
1082         }
1083
1084         if (*(--p) == '\t') {                   /* will retype the whole line   */
1085                 while (*colp > plen) {
1086                         puts (erase_seq);
1087                         (*colp)--;
1088                 }
1089                 for (s=buffer; s<p; ++s) {
1090                         if (*s == '\t') {
1091                                 puts (tab_seq+((*colp) & 07));
1092                                 *colp += 8 - ((*colp) & 07);
1093                         } else {
1094                                 ++(*colp);
1095                                 putc (*s);
1096                         }
1097                 }
1098         } else {
1099                 puts (erase_seq);
1100                 (*colp)--;
1101         }
1102         (*np)--;
1103         return (p);
1104 }
1105
1106 /****************************************************************************/
1107
1108 int parse_line (char *line, char *argv[])
1109 {
1110         int nargs = 0;
1111
1112 #ifdef DEBUG_PARSER
1113         printf ("parse_line: \"%s\"\n", line);
1114 #endif
1115         while (nargs < CONFIG_SYS_MAXARGS) {
1116
1117                 /* skip any white space */
1118                 while ((*line == ' ') || (*line == '\t')) {
1119                         ++line;
1120                 }
1121
1122                 if (*line == '\0') {    /* end of line, no more args    */
1123                         argv[nargs] = NULL;
1124 #ifdef DEBUG_PARSER
1125                 printf ("parse_line: nargs=%d\n", nargs);
1126 #endif
1127                         return (nargs);
1128                 }
1129
1130                 argv[nargs++] = line;   /* begin of argument string     */
1131
1132                 /* find end of string */
1133                 while (*line && (*line != ' ') && (*line != '\t')) {
1134                         ++line;
1135                 }
1136
1137                 if (*line == '\0') {    /* end of line, no more args    */
1138                         argv[nargs] = NULL;
1139 #ifdef DEBUG_PARSER
1140                 printf ("parse_line: nargs=%d\n", nargs);
1141 #endif
1142                         return (nargs);
1143                 }
1144
1145                 *line++ = '\0';         /* terminate current arg         */
1146         }
1147
1148         printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
1149
1150 #ifdef DEBUG_PARSER
1151         printf ("parse_line: nargs=%d\n", nargs);
1152 #endif
1153         return (nargs);
1154 }
1155
1156 /****************************************************************************/
1157
1158 static void process_macros (const char *input, char *output)
1159 {
1160         char c, prev;
1161         const char *varname_start = NULL;
1162         int inputcnt = strlen (input);
1163         int outputcnt = CONFIG_SYS_CBSIZE;
1164         int state = 0;          /* 0 = waiting for '$'  */
1165
1166         /* 1 = waiting for '(' or '{' */
1167         /* 2 = waiting for ')' or '}' */
1168         /* 3 = waiting for '''  */
1169 #ifdef DEBUG_PARSER
1170         char *output_start = output;
1171
1172         printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1173                 input);
1174 #endif
1175
1176         prev = '\0';            /* previous character   */
1177
1178         while (inputcnt && outputcnt) {
1179                 c = *input++;
1180                 inputcnt--;
1181
1182                 if (state != 3) {
1183                         /* remove one level of escape characters */
1184                         if ((c == '\\') && (prev != '\\')) {
1185                                 if (inputcnt-- == 0)
1186                                         break;
1187                                 prev = c;
1188                                 c = *input++;
1189                         }
1190                 }
1191
1192                 switch (state) {
1193                 case 0: /* Waiting for (unescaped) $    */
1194                         if ((c == '\'') && (prev != '\\')) {
1195                                 state = 3;
1196                                 break;
1197                         }
1198                         if ((c == '$') && (prev != '\\')) {
1199                                 state++;
1200                         } else {
1201                                 *(output++) = c;
1202                                 outputcnt--;
1203                         }
1204                         break;
1205                 case 1: /* Waiting for (        */
1206                         if (c == '(' || c == '{') {
1207                                 state++;
1208                                 varname_start = input;
1209                         } else {
1210                                 state = 0;
1211                                 *(output++) = '$';
1212                                 outputcnt--;
1213
1214                                 if (outputcnt) {
1215                                         *(output++) = c;
1216                                         outputcnt--;
1217                                 }
1218                         }
1219                         break;
1220                 case 2: /* Waiting for )        */
1221                         if (c == ')' || c == '}') {
1222                                 int i;
1223                                 char envname[CONFIG_SYS_CBSIZE], *envval;
1224                                 int envcnt = input - varname_start - 1; /* Varname # of chars */
1225
1226                                 /* Get the varname */
1227                                 for (i = 0; i < envcnt; i++) {
1228                                         envname[i] = varname_start[i];
1229                                 }
1230                                 envname[i] = 0;
1231
1232                                 /* Get its value */
1233                                 envval = getenv (envname);
1234
1235                                 /* Copy into the line if it exists */
1236                                 if (envval != NULL)
1237                                         while ((*envval) && outputcnt) {
1238                                                 *(output++) = *(envval++);
1239                                                 outputcnt--;
1240                                         }
1241                                 /* Look for another '$' */
1242                                 state = 0;
1243                         }
1244                         break;
1245                 case 3: /* Waiting for '        */
1246                         if ((c == '\'') && (prev != '\\')) {
1247                                 state = 0;
1248                         } else {
1249                                 *(output++) = c;
1250                                 outputcnt--;
1251                         }
1252                         break;
1253                 }
1254                 prev = c;
1255         }
1256
1257         if (outputcnt)
1258                 *output = 0;
1259         else
1260                 *(output - 1) = 0;
1261
1262 #ifdef DEBUG_PARSER
1263         printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1264                 strlen (output_start), output_start);
1265 #endif
1266 }
1267
1268 /****************************************************************************
1269  * returns:
1270  *      1  - command executed, repeatable
1271  *      0  - command executed but not repeatable, interrupted commands are
1272  *           always considered not repeatable
1273  *      -1 - not executed (unrecognized, bootd recursion or too many args)
1274  *           (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1275  *           considered unrecognized)
1276  *
1277  * WARNING:
1278  *
1279  * We must create a temporary copy of the command since the command we get
1280  * may be the result from getenv(), which returns a pointer directly to
1281  * the environment data, which may change magicly when the command we run
1282  * creates or modifies environment variables (like "bootp" does).
1283  */
1284
1285 int run_command (const char *cmd, int flag)
1286 {
1287         cmd_tbl_t *cmdtp;
1288         char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd          */
1289         char *token;                    /* start of token in cmdbuf     */
1290         char *sep;                      /* end of token (separator) in cmdbuf */
1291         char finaltoken[CONFIG_SYS_CBSIZE];
1292         char *str = cmdbuf;
1293         char *argv[CONFIG_SYS_MAXARGS + 1];     /* NULL terminated      */
1294         int argc, inquotes;
1295         int repeatable = 1;
1296         int rc = 0;
1297
1298 #ifdef DEBUG_PARSER
1299         printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1300         puts (cmd ? cmd : "NULL");      /* use puts - string may be loooong */
1301         puts ("\"\n");
1302 #endif
1303
1304         clear_ctrlc();          /* forget any previous Control C */
1305
1306         if (!cmd || !*cmd) {
1307                 return -1;      /* empty command */
1308         }
1309
1310         if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
1311                 puts ("## Command too long!\n");
1312                 return -1;
1313         }
1314
1315         strcpy (cmdbuf, cmd);
1316
1317         /* Process separators and check for invalid
1318          * repeatable commands
1319          */
1320
1321 #ifdef DEBUG_PARSER
1322         printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1323 #endif
1324         while (*str) {
1325
1326                 /*
1327                  * Find separator, or string end
1328                  * Allow simple escape of ';' by writing "\;"
1329                  */
1330                 for (inquotes = 0, sep = str; *sep; sep++) {
1331                         if ((*sep=='\'') &&
1332                             (*(sep-1) != '\\'))
1333                                 inquotes=!inquotes;
1334
1335                         if (!inquotes &&
1336                             (*sep == ';') &&    /* separator            */
1337                             ( sep != str) &&    /* past string start    */
1338                             (*(sep-1) != '\\')) /* and NOT escaped      */
1339                                 break;
1340                 }
1341
1342                 /*
1343                  * Limit the token to data between separators
1344                  */
1345                 token = str;
1346                 if (*sep) {
1347                         str = sep + 1;  /* start of command for next pass */
1348                         *sep = '\0';
1349                 }
1350                 else
1351                         str = sep;      /* no more commands for next pass */
1352 #ifdef DEBUG_PARSER
1353                 printf ("token: \"%s\"\n", token);
1354 #endif
1355
1356                 /* find macros in this token and replace them */
1357                 process_macros (token, finaltoken);
1358
1359                 /* Extract arguments */
1360                 if ((argc = parse_line (finaltoken, argv)) == 0) {
1361                         rc = -1;        /* no command at all */
1362                         continue;
1363                 }
1364
1365                 /* Look up command in command table */
1366                 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1367                         printf ("Unknown command '%s' - try 'help'\n", argv[0]);
1368                         rc = -1;        /* give up after bad command */
1369                         continue;
1370                 }
1371
1372                 /* found - check max args */
1373                 if (argc > cmdtp->maxargs) {
1374                         cmd_usage(cmdtp);
1375                         rc = -1;
1376                         continue;
1377                 }
1378
1379 #if defined(CONFIG_CMD_BOOTD)
1380                 /* avoid "bootd" recursion */
1381                 if (cmdtp->cmd == do_bootd) {
1382 #ifdef DEBUG_PARSER
1383                         printf ("[%s]\n", finaltoken);
1384 #endif
1385                         if (flag & CMD_FLAG_BOOTD) {
1386                                 puts ("'bootd' recursion detected\n");
1387                                 rc = -1;
1388                                 continue;
1389                         } else {
1390                                 flag |= CMD_FLAG_BOOTD;
1391                         }
1392                 }
1393 #endif
1394
1395                 /* OK - call function to do the command */
1396                 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
1397                         rc = -1;
1398                 }
1399
1400                 repeatable &= cmdtp->repeatable;
1401
1402                 /* Did the user stop this? */
1403                 if (had_ctrlc ())
1404                         return -1;      /* if stopped then not repeatable */
1405         }
1406
1407         return rc ? rc : repeatable;
1408 }
1409
1410 /****************************************************************************/
1411
1412 #if defined(CONFIG_CMD_RUN)
1413 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
1414 {
1415         int i;
1416
1417         if (argc < 2) {
1418                 cmd_usage(cmdtp);
1419                 return 1;
1420         }
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