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 CFG_HUSH_PARSER
  38 #include <hush.h>
  39 #endif
  40
  41 #include <post.h>
  42
  43 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST)
  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
  60 #define MAX_DELAY_STOP_STR 32
  61
  62 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
  63 static int abortboot(int);
  64 #endif
  65
  66 #undef DEBUG_PARSER
  67
  68 char        console_buffer[CFG_CBSIZE];         /* console I/O buffer   */
  69 int nobootdelay;
  70
  71 #ifndef CONFIG_CMDLINE_EDITING
  72 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
  73 static char erase_seq[] = "\b \b";              /* erase sequence       */
  74 static char   tab_seq[] = "        ";           /* used to expand TABs  */
  75 #endif /* CONFIG_CMDLINE_EDITING */
  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 #ifdef CFG_PREBOOT_OVERRIDE
  94 extern char *preboot_override;
  95 #endif
  96
  97
  98 /***************************************************************************
  99  * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
 100  * returns: 0 -  no key string, allow autoboot
 101  *          1 - got key string, abort
 102  */
 103 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
 104 # if defined(CONFIG_AUTOBOOT_KEYED)
 105 static __inline__ int abortboot(int bootdelay)
 106 {
 107         int abort = 0;
 108         uint64_t etime = endtick(bootdelay);
 109         struct {
 110                 char* str;
 111                 u_int len;
 112                 int retry;
 113         }
 114         delaykey [] = {
 115                 { str: getenv ("bootdelaykey"),  retry: 1 },
 116                 { str: getenv ("bootdelaykey2"), retry: 1 },
 117                 { str: getenv ("bootstopkey"),   retry: 0 },
 118                 { str: getenv ("bootstopkey2"),  retry: 0 },
 119         };
 120
 121         char presskey [MAX_DELAY_STOP_STR];
 122         u_int presskey_len = 0;
 123         u_int presskey_max = 0;
 124         u_int i;
 125
 126 #  ifdef CONFIG_AUTOBOOT_PROMPT
 127         printf(CONFIG_AUTOBOOT_PROMPT, bootdelay);
 128 #  endif
 129
 130 #  ifdef CONFIG_AUTOBOOT_DELAY_STR
 131         if (delaykey[0].str == NULL)
 132                 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
 133 #  endif
 134 #  ifdef CONFIG_AUTOBOOT_DELAY_STR2
 135         if (delaykey[1].str == NULL)
 136                 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
 137 #  endif
 138 #  ifdef CONFIG_AUTOBOOT_STOP_STR
 139         if (delaykey[2].str == NULL)
 140                 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
 141 #  endif
 142 #  ifdef CONFIG_AUTOBOOT_STOP_STR2
 143         if (delaykey[3].str == NULL)
 144                 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
 145 #  endif
 146
 147         for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
 148                 delaykey[i].len = delaykey[i].str == NULL ?
 149                                     0 : strlen (delaykey[i].str);
 150                 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
 151                                     MAX_DELAY_STOP_STR : delaykey[i].len;
 152
 153                 presskey_max = presskey_max > delaykey[i].len ?
 154                                     presskey_max : delaykey[i].len;
 155
 156 #  if DEBUG_BOOTKEYS
 157                 printf("%s key:<%s>\n",
 158                        delaykey[i].retry ? "delay" : "stop",
 159                        delaykey[i].str ? delaykey[i].str : "NULL");
 160 #  endif
 161         }
 162
 163         /* In order to keep up with incoming data, check timeout only
 164          * when catch up.
 165          */
 166         while (!abort && get_ticks() <= etime) {
 167                 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
 168                         if (delaykey[i].len > 0 &&
 169                             presskey_len >= delaykey[i].len &&
 170                             memcmp (presskey + presskey_len - delaykey[i].len,
 171                                     delaykey[i].str,
 172                                     delaykey[i].len) == 0) {
 173 #  if DEBUG_BOOTKEYS
 174                                 printf("got %skey\n",
 175                                        delaykey[i].retry ? "delay" : "stop");
 176 #  endif
 177
 178 #  ifdef CONFIG_BOOT_RETRY_TIME
 179                                 /* don't retry auto boot */
 180                                 if (! delaykey[i].retry)
 181                                         retry_time = -1;
 182 #  endif
 183                                 abort = 1;
 184                         }
 185                 }
 186
 187                 if (tstc()) {
 188                         if (presskey_len < presskey_max) {
 189                                 presskey [presskey_len ++] = getc();
 190                         }
 191                         else {
 192                                 for (i = 0; i < presskey_max - 1; i ++)
 193                                         presskey [i] = presskey [i + 1];
 194
 195                                 presskey [i] = getc();
 196                         }
 197                 }
 198         }
 199 #  if DEBUG_BOOTKEYS
 200         if (!abort)
 201                 puts("key timeout\n");
 202 #  endif
 203
 204 #ifdef CONFIG_SILENT_CONSOLE
 205         if (abort)
 206                 gd->flags &= ~GD_FLG_SILENT;
 207 #endif
 208
 209         return abort;
 210 }
 211
 212 # else  /* !defined(CONFIG_AUTOBOOT_KEYED) */
 213
 214 #ifdef CONFIG_MENUKEY
 215 static int menukey = 0;
 216 #endif
 217
 218 static __inline__ int abortboot(int bootdelay)
 219 {
 220         int abort = 0;
 221
 222 #ifdef CONFIG_MENUPROMPT
 223         printf(CONFIG_MENUPROMPT, bootdelay);
 224 #else
 225         printf("Hit any key to stop autoboot: %2d ", bootdelay);
 226 #endif
 227
 228 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
 229         /*
 230          * Check if key already pressed
 231          * Don't check if bootdelay < 0
 232          */
 233         if (bootdelay >= 0) {
 234                 if (tstc()) {   /* we got a key press   */
 235                         (void) getc();  /* consume input        */
 236                         puts ("\b\b\b 0");
 237                         abort = 1;      /* don't auto boot      */
 238                 }
 239         }
 240 #endif
 241
 242         while ((bootdelay > 0) && (!abort)) {
 243                 int i;
 244
 245                 --bootdelay;
 246                 /* delay 100 * 10ms */
 247                 for (i=0; !abort && i<100; ++i) {
 248                         if (tstc()) {   /* we got a key press   */
 249                                 abort  = 1;     /* don't auto boot      */
 250                                 bootdelay = 0;  /* no more delay        */
 251 # ifdef CONFIG_MENUKEY
 252                                 menukey = getc();
 253 # else
 254                                 (void) getc();  /* consume input        */
 255 # endif
 256                                 break;
 257                         }
 258                         udelay(10000);
 259                 }
 260
 261                 printf("\b\b\b%2d ", bootdelay);
 262         }
 263
 264         putc('\n');
 265
 266 #ifdef CONFIG_SILENT_CONSOLE
 267         if (abort)
 268                 gd->flags &= ~GD_FLG_SILENT;
 269 #endif
 270
 271         return abort;
 272 }
 273 # endif /* CONFIG_AUTOBOOT_KEYED */
 274 #endif  /* CONFIG_BOOTDELAY >= 0  */
 275
 276 /****************************************************************************/
 277
 278 void main_loop (void)
 279 {
 280 #ifndef CFG_HUSH_PARSER
 281         static char lastcommand[CFG_CBSIZE] = { 0, };
 282         int len;
 283         int rc = 1;
 284         int flag;
 285 #endif
 286
 287 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
 288         char *s;
 289         int bootdelay;
 290 #endif
 291 #if defined(CONFIG_PREBOOT) || defined(CFG_PREBOOT_OVERRIDE)
 292         char *p = NULL;
 293 #endif
 294 #ifdef CONFIG_BOOTCOUNT_LIMIT
 295         unsigned long bootcount = 0;
 296         unsigned long bootlimit = 0;
 297         char *bcs;
 298         char bcs_set[16];
 299 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 300
 301 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
 302         ulong bmp = 0;          /* default bitmap */
 303         extern int trab_vfd (ulong bitmap);
 304
 305 #ifdef CONFIG_MODEM_SUPPORT
 306         if (do_mdm_init)
 307                 bmp = 1;        /* alternate bitmap */
 308 #endif
 309         trab_vfd (bmp);
 310 #endif  /* CONFIG_VFD && VFD_TEST_LOGO */
 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 CFG_HUSH_PARSER
 342         u_boot_hush_start ();
 343 #endif
 344
 345 #ifdef CONFIG_AUTO_COMPLETE
 346         install_auto_complete();
 347 #endif
 348
 349 #if defined(CONFIG_PREBOOT) || defined(CFG_PREBOOT_OVERRIDE)
 350 #ifdef CONFIG_PREBOOT
 351         p = getenv ("preboot");
 352 #endif
 353 #ifdef CFG_PREBOOT_OVERRIDE
 354         if (preboot_override) {
 355                 /* for convenience, preboot_override may end in \n, not \0 */
 356                 p = strchr(preboot_override, '\n');
 357                 if (p)
 358                         *p = 0;
 359                 /* make sure we can overwrite the load area if we want to */
 360                 p = strdup(preboot_override);
 361                 /* clean the image in case we want to flash it */
 362                 preboot_override = NULL;
 363         }
 364 #endif /* CFG_PREBOOT_OVERRIDE */
 365         if (p) {
 366 # ifdef CONFIG_AUTOBOOT_KEYED
 367                 int prev = disable_ctrlc(1);    /* disable Control C checking */
 368 # endif
 369
 370 # ifndef CFG_HUSH_PARSER
 371                 run_command (p, 0);
 372 # else
 373                 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
 374                                     FLAG_EXIT_FROM_LOOP);
 375 # endif
 376
 377 # ifdef CONFIG_AUTOBOOT_KEYED
 378                 disable_ctrlc(prev);    /* restore Control C checking */
 379 # endif
 380         }
 381 #endif /* CONFIG_PREBOOT || CFG_PREBOOT_OVERRIDE */
 382
 383 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
 384         s = getenv ("bootdelay");
 385         bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
 386
 387         debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
 388
 389 # ifdef CONFIG_BOOT_RETRY_TIME
 390         init_cmd_timeout ();
 391 # endif /* CONFIG_BOOT_RETRY_TIME */
 392
 393 #ifdef CONFIG_POST
 394         if (gd->flags & GD_FLG_POSTFAIL) {
 395                 s = getenv("failbootcmd");
 396         }
 397         else
 398 #endif /* CONFIG_POST */
 399 #ifdef CONFIG_BOOTCOUNT_LIMIT
 400         if (bootlimit && (bootcount > bootlimit)) {
 401                 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
 402                         (unsigned)bootlimit);
 403                 s = getenv ("altbootcmd");
 404         }
 405         else
 406 #endif /* CONFIG_BOOTCOUNT_LIMIT */
 407                 s = getenv ("bootcmd");
 408
 409         debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
 410
 411         if (!nobootdelay && bootdelay >= 0 && s && !abortboot (bootdelay)) {
 412 # ifdef CONFIG_AUTOBOOT_KEYED
 413                 int prev = disable_ctrlc(1);    /* disable Control C checking */
 414 # endif
 415
 416 # ifndef CFG_HUSH_PARSER
 417                 run_command (s, 0);
 418 # else
 419                 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
 420                                     FLAG_EXIT_FROM_LOOP);
 421 # endif
 422
 423 # ifdef CONFIG_AUTOBOOT_KEYED
 424                 disable_ctrlc(prev);    /* restore Control C checking */
 425 # endif
 426         }
 427
 428 # ifdef CONFIG_MENUKEY
 429         if (menukey == CONFIG_MENUKEY) {
 430             s = getenv("menucmd");
 431             if (s) {
 432 # ifndef CFG_HUSH_PARSER
 433                 run_command (s, 0);
 434 # else
 435                 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
 436                                     FLAG_EXIT_FROM_LOOP);
 437 # endif
 438             }
 439         }
 440 #endif /* CONFIG_MENUKEY */
 441 #endif  /* CONFIG_BOOTDELAY */
 442
 443 #ifdef CONFIG_AMIGAONEG3SE
 444         {
 445             extern void video_banner(void);
 446             video_banner();
 447         }
 448 #endif
 449
 450         /*
 451          * Main Loop for Monitor Command Processing
 452          */
 453 #ifdef CFG_HUSH_PARSER
 454         parse_file_outer();
 455         /* This point is never reached */
 456         for (;;);
 457 #else
 458         for (;;) {
 459 #ifdef CONFIG_BOOT_RETRY_TIME
 460                 if (rc >= 0) {
 461                         /* Saw enough of a valid command to
 462                          * restart the timeout.
 463                          */
 464                         reset_cmd_timeout();
 465                 }
 466 #endif
 467                 len = readline (CFG_PROMPT);
 468
 469                 flag = 0;       /* assume no special flags for now */
 470                 if (len > 0)
 471                         strcpy (lastcommand, console_buffer);
 472                 else if (len == 0)
 473                         flag |= CMD_FLAG_REPEAT;
 474 #ifdef CONFIG_BOOT_RETRY_TIME
 475                 else if (len == -2) {
 476                         /* -2 means timed out, retry autoboot
 477                          */
 478                         puts ("\nTimed out waiting for command\n");
 479 # ifdef CONFIG_RESET_TO_RETRY
 480                         /* Reinit board to run initialization code again */
 481                         do_reset (NULL, 0, 0, NULL);
 482 # else
 483                         return;         /* retry autoboot */
 484 # endif
 485                 }
 486 #endif
 487
 488                 if (len == -1)
 489                         puts ("<INTERRUPT>\n");
 490                 else
 491                         rc = run_command (lastcommand, flag);
 492
 493                 if (rc <= 0) {
 494                         /* invalid command or not repeatable, forget it */
 495                         lastcommand[0] = 0;
 496                 }
 497         }
 498 #endif /*CFG_HUSH_PARSER*/
 499 }
 500
 501 #ifdef CONFIG_BOOT_RETRY_TIME
 502 /***************************************************************************
 503  * initialize command line timeout
 504  */
 505 void init_cmd_timeout(void)
 506 {
 507         char *s = getenv ("bootretry");
 508
 509         if (s != NULL)
 510                 retry_time = (int)simple_strtol(s, NULL, 10);
 511         else
 512                 retry_time =  CONFIG_BOOT_RETRY_TIME;
 513
 514         if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
 515                 retry_time = CONFIG_BOOT_RETRY_MIN;
 516 }
 517
 518 /***************************************************************************
 519  * reset command line timeout to retry_time seconds
 520  */
 521 void reset_cmd_timeout(void)
 522 {
 523         endtime = endtick(retry_time);
 524 }
 525 #endif
 526
 527 #ifdef CONFIG_CMDLINE_EDITING
 528
 529 /*
 530  * cmdline-editing related codes from vivi.
 531  * Author: Janghoon Lyu <nandy@mizi.com>
 532  */
 533
 534 #define putnstr(str,n)  do {                    \
 535                 printf ("%.*s", n, str);        \
 536         } while (0)
 537
 538 #define CTL_CH(c)               ((c) - 'a' + 1)
 539
 540 #define MAX_CMDBUF_SIZE         256
 541
 542 #define CTL_BACKSPACE           ('\b')
 543 #define DEL                     ((char)255)
 544 #define DEL7                    ((char)127)
 545 #define CREAD_HIST_CHAR         ('!')
 546
 547 #define getcmd_putch(ch)        putc(ch)
 548 #define getcmd_getch()          getc()
 549 #define getcmd_cbeep()          getcmd_putch('\a')
 550
 551 #define HIST_MAX                20
 552 #define HIST_SIZE               MAX_CMDBUF_SIZE
 553
 554 static int hist_max = 0;
 555 static int hist_add_idx = 0;
 556 static int hist_cur = -1;
 557 unsigned hist_num = 0;
 558
 559 char* hist_list[HIST_MAX];
 560 char hist_lines[HIST_MAX][HIST_SIZE];
 561
 562 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
 563
 564 static void hist_init(void)
 565 {
 566         int i;
 567
 568         hist_max = 0;
 569         hist_add_idx = 0;
 570         hist_cur = -1;
 571         hist_num = 0;
 572
 573         for (i = 0; i < HIST_MAX; i++) {
 574                 hist_list[i] = hist_lines[i];
 575                 hist_list[i][0] = '\0';
 576         }
 577 }
 578
 579 static void cread_add_to_hist(char *line)
 580 {
 581         strcpy(hist_list[hist_add_idx], line);
 582
 583         if (++hist_add_idx >= HIST_MAX)
 584                 hist_add_idx = 0;
 585
 586         if (hist_add_idx > hist_max)
 587                 hist_max = hist_add_idx;
 588
 589         hist_num++;
 590 }
 591
 592 static char* hist_prev(void)
 593 {
 594         char *ret;
 595         int old_cur;
 596
 597         if (hist_cur < 0)
 598                 return NULL;
 599
 600         old_cur = hist_cur;
 601         if (--hist_cur < 0)
 602                 hist_cur = hist_max;
 603
 604         if (hist_cur == hist_add_idx) {
 605                 hist_cur = old_cur;
 606                 ret = NULL;
 607         } else
 608                 ret = hist_list[hist_cur];
 609
 610         return (ret);
 611 }
 612
 613 static char* hist_next(void)
 614 {
 615         char *ret;
 616
 617         if (hist_cur < 0)
 618                 return NULL;
 619
 620         if (hist_cur == hist_add_idx)
 621                 return NULL;
 622
 623         if (++hist_cur > hist_max)
 624                 hist_cur = 0;
 625
 626         if (hist_cur == hist_add_idx) {
 627                 ret = "";
 628         } else
 629                 ret = hist_list[hist_cur];
 630
 631         return (ret);
 632 }
 633
 634 #ifndef CONFIG_CMDLINE_EDITING
 635 static void cread_print_hist_list(void)
 636 {
 637         int i;
 638         unsigned long n;
 639
 640         n = hist_num - hist_max;
 641
 642         i = hist_add_idx + 1;
 643         while (1) {
 644                 if (i > hist_max)
 645                         i = 0;
 646                 if (i == hist_add_idx)
 647                         break;
 648                 printf("%s\n", hist_list[i]);
 649                 n++;
 650                 i++;
 651         }
 652 }
 653 #endif /* CONFIG_CMDLINE_EDITING */
 654
 655 #define BEGINNING_OF_LINE() {                   \
 656         while (num) {                           \
 657                 getcmd_putch(CTL_BACKSPACE);    \
 658                 num--;                          \
 659         }                                       \
 660 }
 661
 662 #define ERASE_TO_EOL() {                                \
 663         if (num < eol_num) {                            \
 664                 int tmp;                                \
 665                 for (tmp = num; tmp < eol_num; tmp++)   \
 666                         getcmd_putch(' ');              \
 667                 while (tmp-- > num)                     \
 668                         getcmd_putch(CTL_BACKSPACE);    \
 669                 eol_num = num;                          \
 670         }                                               \
 671 }
 672
 673 #define REFRESH_TO_EOL() {                      \
 674         if (num < eol_num) {                    \
 675                 wlen = eol_num - num;           \
 676                 putnstr(buf + num, wlen);       \
 677                 num = eol_num;                  \
 678         }                                       \
 679 }
 680
 681 static void cread_add_char(char ichar, int insert, unsigned long *num,
 682                unsigned long *eol_num, char *buf, unsigned long len)
 683 {
 684         unsigned long wlen;
 685
 686         /* room ??? */
 687         if (insert || *num == *eol_num) {
 688                 if (*eol_num > len - 1) {
 689                         getcmd_cbeep();
 690                         return;
 691                 }
 692                 (*eol_num)++;
 693         }
 694
 695         if (insert) {
 696                 wlen = *eol_num - *num;
 697                 if (wlen > 1) {
 698                         memmove(&buf[*num+1], &buf[*num], wlen-1);
 699                 }
 700
 701                 buf[*num] = ichar;
 702                 putnstr(buf + *num, wlen);
 703                 (*num)++;
 704                 while (--wlen) {
 705                         getcmd_putch(CTL_BACKSPACE);
 706                 }
 707         } else {
 708                 /* echo the character */
 709                 wlen = 1;
 710                 buf[*num] = ichar;
 711                 putnstr(buf + *num, wlen);
 712                 (*num)++;
 713         }
 714 }
 715
 716 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
 717               unsigned long *eol_num, char *buf, unsigned long len)
 718 {
 719         while (strsize--) {
 720                 cread_add_char(*str, insert, num, eol_num, buf, len);
 721                 str++;
 722         }
 723 }
 724
 725 static int cread_line(const char *const prompt, char *buf, unsigned int *len)
 726 {
 727         unsigned long num = 0;
 728         unsigned long eol_num = 0;
 729         unsigned long rlen;
 730         unsigned long wlen;
 731         char ichar;
 732         int insert = 1;
 733         int esc_len = 0;
 734         int rc = 0;
 735         char esc_save[8];
 736
 737         while (1) {
 738                 rlen = 1;
 739 #ifdef CONFIG_BOOT_RETRY_TIME
 740                 while (!tstc()) {       /* while no incoming data */
 741                         if (retry_time >= 0 && get_ticks() > endtime)
 742                                 return (-2);    /* timed out */
 743                 }
 744 #endif
 745
 746                 ichar = getcmd_getch();
 747
 748                 if ((ichar == '\n') || (ichar == '\r')) {
 749                         putc('\n');
 750                         break;
 751                 }
 752
 753                 /*
 754                  * handle standard linux xterm esc sequences for arrow key, etc.
 755                  */
 756                 if (esc_len != 0) {
 757                         if (esc_len == 1) {
 758                                 if (ichar == '[') {
 759                                         esc_save[esc_len] = ichar;
 760                                         esc_len = 2;
 761                                 } else {
 762                                         cread_add_str(esc_save, esc_len, insert,
 763                                                       &num, &eol_num, buf, *len);
 764                                         esc_len = 0;
 765                                 }
 766                                 continue;
 767                         }
 768
 769                         switch (ichar) {
 770
 771                         case 'D':       /* <- key */
 772                                 ichar = CTL_CH('b');
 773                                 esc_len = 0;
 774                                 break;
 775                         case 'C':       /* -> key */
 776                                 ichar = CTL_CH('f');
 777                                 esc_len = 0;
 778                                 break;  /* pass off to ^F handler */
 779                         case 'H':       /* Home key */
 780                                 ichar = CTL_CH('a');
 781                                 esc_len = 0;
 782                                 break;  /* pass off to ^A handler */
 783                         case 'A':       /* up arrow */
 784                                 ichar = CTL_CH('p');
 785                                 esc_len = 0;
 786                                 break;  /* pass off to ^P handler */
 787                         case 'B':       /* down arrow */
 788                                 ichar = CTL_CH('n');
 789                                 esc_len = 0;
 790                                 break;  /* pass off to ^N handler */
 791                         default:
 792                                 esc_save[esc_len++] = ichar;
 793                                 cread_add_str(esc_save, esc_len, insert,
 794                                               &num, &eol_num, buf, *len);
 795                                 esc_len = 0;
 796                                 continue;
 797                         }
 798                 }
 799
 800                 switch (ichar) {
 801                 case 0x1b:
 802                         if (esc_len == 0) {
 803                                 esc_save[esc_len] = ichar;
 804                                 esc_len = 1;
 805                         } else {
 806                                 puts("impossible condition #876\n");
 807                                 esc_len = 0;
 808                         }
 809                         break;
 810
 811                 case CTL_CH('a'):
 812                         BEGINNING_OF_LINE();
 813                         break;
 814                 case CTL_CH('c'):       /* ^C - break */
 815                         *buf = '\0';    /* discard input */
 816                         return (-1);
 817                 case CTL_CH('f'):
 818                         if (num < eol_num) {
 819                                 getcmd_putch(buf[num]);
 820                                 num++;
 821                         }
 822                         break;
 823                 case CTL_CH('b'):
 824                         if (num) {
 825                                 getcmd_putch(CTL_BACKSPACE);
 826                                 num--;
 827                         }
 828                         break;
 829                 case CTL_CH('d'):
 830                         if (num < eol_num) {
 831                                 wlen = eol_num - num - 1;
 832                                 if (wlen) {
 833                                         memmove(&buf[num], &buf[num+1], wlen);
 834                                         putnstr(buf + num, wlen);
 835                                 }
 836
 837                                 getcmd_putch(' ');
 838                                 do {
 839                                         getcmd_putch(CTL_BACKSPACE);
 840                                 } while (wlen--);
 841                                 eol_num--;
 842                         }
 843                         break;
 844                 case CTL_CH('k'):
 845                         ERASE_TO_EOL();
 846                         break;
 847                 case CTL_CH('e'):
 848                         REFRESH_TO_EOL();
 849                         break;
 850                 case CTL_CH('o'):
 851                         insert = !insert;
 852                         break;
 853                 case CTL_CH('x'):
 854                 case CTL_CH('u'):
 855                         BEGINNING_OF_LINE();
 856                         ERASE_TO_EOL();
 857                         break;
 858                 case DEL:
 859                 case DEL7:
 860                 case 8:
 861                         if (num) {
 862                                 wlen = eol_num - num;
 863                                 num--;
 864                                 memmove(&buf[num], &buf[num+1], wlen);
 865                                 getcmd_putch(CTL_BACKSPACE);
 866                                 putnstr(buf + num, wlen);
 867                                 getcmd_putch(' ');
 868                                 do {
 869                                         getcmd_putch(CTL_BACKSPACE);
 870                                 } while (wlen--);
 871                                 eol_num--;
 872                         }
 873                         break;
 874                 case CTL_CH('p'):
 875                 case CTL_CH('n'):
 876                 {
 877                         char * hline;
 878
 879                         esc_len = 0;
 880
 881                         if (ichar == CTL_CH('p'))
 882                                 hline = hist_prev();
 883                         else
 884                                 hline = hist_next();
 885
 886                         if (!hline) {
 887                                 getcmd_cbeep();
 888                                 continue;
 889                         }
 890
 891                         /* nuke the current line */
 892                         /* first, go home */
 893                         BEGINNING_OF_LINE();
 894
 895                         /* erase to end of line */
 896                         ERASE_TO_EOL();
 897
 898                         /* copy new line into place and display */
 899                         strcpy(buf, hline);
 900                         eol_num = strlen(buf);
 901                         REFRESH_TO_EOL();
 902                         continue;
 903                 }
 904 #ifdef CONFIG_AUTO_COMPLETE
 905                 case '\t': {
 906                         int num2, col;
 907
 908                         /* do not autocomplete when in the middle */
 909                         if (num < eol_num) {
 910                                 getcmd_cbeep();
 911                                 break;
 912                         }
 913
 914                         buf[num] = '\0';
 915                         col = strlen(prompt) + eol_num;
 916                         num2 = num;
 917                         if (cmd_auto_complete(prompt, buf, &num2, &col)) {
 918                                 col = num2 - num;
 919                                 num += col;
 920                                 eol_num += col;
 921                         }
 922                         break;
 923                 }
 924 #endif
 925                 default:
 926                         cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
 927                         break;
 928                 }
 929         }
 930         *len = eol_num;
 931         buf[eol_num] = '\0';    /* lose the newline */
 932
 933         if (buf[0] && buf[0] != CREAD_HIST_CHAR)
 934                 cread_add_to_hist(buf);
 935         hist_cur = hist_add_idx;
 936
 937         return (rc);
 938 }
 939
 940 #endif /* CONFIG_CMDLINE_EDITING */
 941
 942 /****************************************************************************/
 943
 944 /*
 945  * Prompt for input and read a line.
 946  * If  CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
 947  * time out when time goes past endtime (timebase time in ticks).
 948  * Return:      number of read characters
 949  *              -1 if break
 950  *              -2 if timed out
 951  */
 952 int readline (const char *const prompt)
 953 {
 954         return readline_into_buffer(prompt, console_buffer);
 955 }
 956
 957
 958 int readline_into_buffer (const char *const prompt, char * buffer)
 959 {
 960         char *p = buffer;
 961 #ifdef CONFIG_CMDLINE_EDITING
 962         unsigned int len=MAX_CMDBUF_SIZE;
 963         int rc;
 964         static int initted = 0;
 965
 966         if (!initted) {
 967                 hist_init();
 968                 initted = 1;
 969         }
 970
 971         puts (prompt);
 972
 973         rc = cread_line(prompt, p, &len);
 974         return rc < 0 ? rc : len;
 975 #else
 976         char * p_buf = p;
 977         int     n = 0;                          /* buffer index         */
 978         int     plen = 0;                       /* prompt length        */
 979         int     col;                            /* output column cnt    */
 980         char    c;
 981
 982         /* print prompt */
 983         if (prompt) {
 984                 plen = strlen (prompt);
 985                 puts (prompt);
 986         }
 987         col = plen;
 988
 989         for (;;) {
 990 #ifdef CONFIG_BOOT_RETRY_TIME
 991                 while (!tstc()) {       /* while no incoming data */
 992                         if (retry_time >= 0 && get_ticks() > endtime)
 993                                 return (-2);    /* timed out */
 994                 }
 995 #endif
 996                 WATCHDOG_RESET();               /* Trigger watchdog, if needed */
 997
 998 #ifdef CONFIG_SHOW_ACTIVITY
 999                 while (!tstc()) {
1000                         extern void show_activity(int arg);
1001                         show_activity(0);
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 < CFG_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 #endif /* CONFIG_CMDLINE_EDITING */
1072 }
1073
1074 /****************************************************************************/
1075
1076 #ifndef CONFIG_CMDLINE_EDITING
1077 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1078 {
1079         char *s;
1080
1081         if (*np == 0) {
1082                 return (p);
1083         }
1084
1085         if (*(--p) == '\t') {                   /* will retype the whole line   */
1086                 while (*colp > plen) {
1087                         puts (erase_seq);
1088                         (*colp)--;
1089                 }
1090                 for (s=buffer; s<p; ++s) {
1091                         if (*s == '\t') {
1092                                 puts (tab_seq+((*colp) & 07));
1093                                 *colp += 8 - ((*colp) & 07);
1094                         } else {
1095                                 ++(*colp);
1096                                 putc (*s);
1097                         }
1098                 }
1099         } else {
1100                 puts (erase_seq);
1101                 (*colp)--;
1102         }
1103         (*np)--;
1104         return (p);
1105 }
1106 #endif /* CONFIG_CMDLINE_EDITING */
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 < CFG_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", CFG_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 = CFG_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[CFG_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 CFG_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[CFG_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[CFG_CBSIZE];
1294         char *str = cmdbuf;
1295         char *argv[CFG_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) >= CFG_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                         printf ("Usage:\n%s\n", cmdtp->usage);
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 *argv[])
1416 {
1417         int i;
1418
1419         if (argc < 2) {
1420                 printf ("Usage:\n%s\n", cmdtp->usage);
1421                 return 1;
1422         }
1423
1424         for (i=1; i<argc; ++i) {
1425                 char *arg;
1426
1427                 if ((arg = getenv (argv[i])) == NULL) {
1428                         printf ("## Error: \"%s\" not defined\n", argv[i]);
1429                         return 1;
1430                 }
1431 #ifndef CFG_HUSH_PARSER
1432                 if (run_command (arg, flag) == -1)
1433                         return 1;
1434 #else
1435                 if (parse_string_outer(arg,
1436                     FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
1437                         return 1;
1438 #endif
1439         }
1440         return 0;
1441 }
1442 #endif