1 /* 2 * (C) Copyright 2000-2003 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* 25 * Command Processor Table 26 */ 27 28 #include <common.h> 29 #include <command.h> 30 31 int 32 do_version (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 33 { 34 extern char version_string[]; 35 printf ("\n%s\n", version_string); 36 return 0; 37 } 38 39 U_BOOT_CMD( 40 version, 1, 1, do_version, 41 "print monitor version", 42 NULL 43 ); 44 45 #if defined(CONFIG_CMD_ECHO) 46 47 int 48 do_echo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 49 { 50 int i, putnl = 1; 51 52 for (i = 1; i < argc; i++) { 53 char *p = argv[i], c; 54 55 if (i > 1) 56 putc(' '); 57 while ((c = *p++) != '\0') { 58 if (c == '\\' && *p == 'c') { 59 putnl = 0; 60 p++; 61 } else { 62 putc(c); 63 } 64 } 65 } 66 67 if (putnl) 68 putc('\n'); 69 return 0; 70 } 71 72 U_BOOT_CMD( 73 echo, CONFIG_SYS_MAXARGS, 1, do_echo, 74 "echo args to console", 75 "[args..]\n" 76 " - echo args to console; \\c suppresses newline\n" 77 ); 78 79 #endif 80 81 #ifdef CONFIG_SYS_HUSH_PARSER 82 83 int 84 do_test (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 85 { 86 char **ap; 87 int left, adv, expr, last_expr, neg, last_cmp; 88 89 /* args? */ 90 if (argc < 3) 91 return 1; 92 93 #if 0 94 { 95 printf("test:"); 96 left = 1; 97 while (argv[left]) 98 printf(" %s", argv[left++]); 99 } 100 #endif 101 102 last_expr = 0; 103 left = argc - 1; ap = argv + 1; 104 if (left > 0 && strcmp(ap[0], "!") == 0) { 105 neg = 1; 106 ap++; 107 left--; 108 } else 109 neg = 0; 110 111 expr = -1; 112 last_cmp = -1; 113 last_expr = -1; 114 while (left > 0) { 115 116 if (strcmp(ap[0], "-o") == 0 || strcmp(ap[0], "-a") == 0) 117 adv = 1; 118 else if (strcmp(ap[0], "-z") == 0 || strcmp(ap[0], "-n") == 0) 119 adv = 2; 120 else 121 adv = 3; 122 123 if (left < adv) { 124 expr = 1; 125 break; 126 } 127 128 if (adv == 1) { 129 if (strcmp(ap[0], "-o") == 0) { 130 last_expr = expr; 131 last_cmp = 0; 132 } else if (strcmp(ap[0], "-a") == 0) { 133 last_expr = expr; 134 last_cmp = 1; 135 } else { 136 expr = 1; 137 break; 138 } 139 } 140 141 if (adv == 2) { 142 if (strcmp(ap[0], "-z") == 0) 143 expr = strlen(ap[1]) == 0 ? 1 : 0; 144 else if (strcmp(ap[0], "-n") == 0) 145 expr = strlen(ap[1]) == 0 ? 0 : 1; 146 else { 147 expr = 1; 148 break; 149 } 150 151 if (last_cmp == 0) 152 expr = last_expr || expr; 153 else if (last_cmp == 1) 154 expr = last_expr && expr; 155 last_cmp = -1; 156 } 157 158 if (adv == 3) { 159 if (strcmp(ap[1], "=") == 0) 160 expr = strcmp(ap[0], ap[2]) == 0; 161 else if (strcmp(ap[1], "!=") == 0) 162 expr = strcmp(ap[0], ap[2]) != 0; 163 else if (strcmp(ap[1], ">") == 0) 164 expr = strcmp(ap[0], ap[2]) > 0; 165 else if (strcmp(ap[1], "<") == 0) 166 expr = strcmp(ap[0], ap[2]) < 0; 167 else if (strcmp(ap[1], "-eq") == 0) 168 expr = simple_strtol(ap[0], NULL, 10) == simple_strtol(ap[2], NULL, 10); 169 else if (strcmp(ap[1], "-ne") == 0) 170 expr = simple_strtol(ap[0], NULL, 10) != simple_strtol(ap[2], NULL, 10); 171 else if (strcmp(ap[1], "-lt") == 0) 172 expr = simple_strtol(ap[0], NULL, 10) < simple_strtol(ap[2], NULL, 10); 173 else if (strcmp(ap[1], "-le") == 0) 174 expr = simple_strtol(ap[0], NULL, 10) <= simple_strtol(ap[2], NULL, 10); 175 else if (strcmp(ap[1], "-gt") == 0) 176 expr = simple_strtol(ap[0], NULL, 10) > simple_strtol(ap[2], NULL, 10); 177 else if (strcmp(ap[1], "-ge") == 0) 178 expr = simple_strtol(ap[0], NULL, 10) >= simple_strtol(ap[2], NULL, 10); 179 else { 180 expr = 1; 181 break; 182 } 183 184 if (last_cmp == 0) 185 expr = last_expr || expr; 186 else if (last_cmp == 1) 187 expr = last_expr && expr; 188 last_cmp = -1; 189 } 190 191 ap += adv; left -= adv; 192 } 193 194 if (neg) 195 expr = !expr; 196 197 expr = !expr; 198 199 debug (": returns %d\n", expr); 200 201 return expr; 202 } 203 204 U_BOOT_CMD( 205 test, CONFIG_SYS_MAXARGS, 1, do_test, 206 "minimal test like /bin/sh", 207 "[args..]\n" 208 " - test functionality\n" 209 ); 210 211 int 212 do_exit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 213 { 214 int r; 215 216 r = 0; 217 if (argc > 1) 218 r = simple_strtoul(argv[1], NULL, 10); 219 220 return -r - 2; 221 } 222 223 U_BOOT_CMD( 224 exit, 2, 1, do_exit, 225 "exit script", 226 " - exit functionality\n" 227 ); 228 229 230 #endif 231 232 /* 233 * Use puts() instead of printf() to avoid printf buffer overflow 234 * for long help messages 235 */ 236 int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 237 { 238 int i; 239 int rcode = 0; 240 241 if (argc == 1) { /*show list of commands */ 242 243 int cmd_items = &__u_boot_cmd_end - 244 &__u_boot_cmd_start; /* pointer arith! */ 245 cmd_tbl_t *cmd_array[cmd_items]; 246 int i, j, swaps; 247 248 /* Make array of commands from .uboot_cmd section */ 249 cmdtp = &__u_boot_cmd_start; 250 for (i = 0; i < cmd_items; i++) { 251 cmd_array[i] = cmdtp++; 252 } 253 254 /* Sort command list (trivial bubble sort) */ 255 for (i = cmd_items - 1; i > 0; --i) { 256 swaps = 0; 257 for (j = 0; j < i; ++j) { 258 if (strcmp (cmd_array[j]->name, 259 cmd_array[j + 1]->name) > 0) { 260 cmd_tbl_t *tmp; 261 tmp = cmd_array[j]; 262 cmd_array[j] = cmd_array[j + 1]; 263 cmd_array[j + 1] = tmp; 264 ++swaps; 265 } 266 } 267 if (!swaps) 268 break; 269 } 270 271 /* print short help (usage) */ 272 for (i = 0; i < cmd_items; i++) { 273 const char *usage = cmd_array[i]->usage; 274 275 /* allow user abort */ 276 if (ctrlc ()) 277 return 1; 278 if (usage == NULL) 279 continue; 280 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH, 281 cmd_array[i]->name, usage); 282 } 283 return 0; 284 } 285 /* 286 * command help (long version) 287 */ 288 for (i = 1; i < argc; ++i) { 289 if ((cmdtp = find_cmd (argv[i])) != NULL) { 290 #ifdef CONFIG_SYS_LONGHELP 291 /* found - print (long) help info */ 292 puts (cmdtp->name); 293 putc (' '); 294 if (cmdtp->help) { 295 puts (cmdtp->help); 296 } else { 297 puts ("- No help available.\n"); 298 rcode = 1; 299 } 300 putc ('\n'); 301 #else /* no long help available */ 302 if (cmdtp->usage) 303 printf ("%s - %s\n", cmdtp->name, cmdtp->usage); 304 #endif /* CONFIG_SYS_LONGHELP */ 305 } else { 306 printf ("Unknown command '%s' - try 'help'" 307 " without arguments for list of all" 308 " known commands\n\n", argv[i] 309 ); 310 rcode = 1; 311 } 312 } 313 return rcode; 314 } 315 316 317 U_BOOT_CMD( 318 help, CONFIG_SYS_MAXARGS, 1, do_help, 319 "print online help", 320 "[command ...]\n" 321 " - show help information (for 'command')\n" 322 "'help' prints online help for the monitor commands.\n\n" 323 "Without arguments, it prints a short usage message for all commands.\n\n" 324 "To get detailed help information for specific commands you can type\n" 325 "'help' with one or more command names as arguments.\n" 326 ); 327 328 /* This do not ust the U_BOOT_CMD macro as ? can't be used in symbol names */ 329 #ifdef CONFIG_SYS_LONGHELP 330 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 331 "?", CONFIG_SYS_MAXARGS, 1, do_help, 332 "alias for 'help'", 333 NULL 334 }; 335 #else 336 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 337 "?", CONFIG_SYS_MAXARGS, 1, do_help, 338 "alias for 'help'" 339 }; 340 #endif /* CONFIG_SYS_LONGHELP */ 341 342 /*************************************************************************** 343 * find command table entry for a command 344 */ 345 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len) 346 { 347 cmd_tbl_t *cmdtp; 348 cmd_tbl_t *cmdtp_temp = table; /*Init value */ 349 const char *p; 350 int len; 351 int n_found = 0; 352 353 /* 354 * Some commands allow length modifiers (like "cp.b"); 355 * compare command name only until first dot. 356 */ 357 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd); 358 359 for (cmdtp = table; 360 cmdtp != table + table_len; 361 cmdtp++) { 362 if (strncmp (cmd, cmdtp->name, len) == 0) { 363 if (len == strlen (cmdtp->name)) 364 return cmdtp; /* full match */ 365 366 cmdtp_temp = cmdtp; /* abbreviated command ? */ 367 n_found++; 368 } 369 } 370 if (n_found == 1) { /* exactly one match */ 371 return cmdtp_temp; 372 } 373 374 return NULL; /* not found or ambiguous command */ 375 } 376 377 cmd_tbl_t *find_cmd (const char *cmd) 378 { 379 int len = &__u_boot_cmd_end - &__u_boot_cmd_start; 380 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len); 381 } 382 383 void cmd_usage(cmd_tbl_t *cmdtp) 384 { 385 printf("Usage:\n%s - %s\n\n", cmdtp->name, cmdtp->usage); 386 } 387 388 #ifdef CONFIG_AUTO_COMPLETE 389 390 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 391 { 392 static char tmp_buf[512]; 393 int space; 394 395 space = last_char == '\0' || last_char == ' ' || last_char == '\t'; 396 397 if (space && argc == 1) 398 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); 399 400 if (!space && argc == 2) 401 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); 402 403 return 0; 404 } 405 406 static void install_auto_complete_handler(const char *cmd, 407 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) 408 { 409 cmd_tbl_t *cmdtp; 410 411 cmdtp = find_cmd(cmd); 412 if (cmdtp == NULL) 413 return; 414 415 cmdtp->complete = complete; 416 } 417 418 void install_auto_complete(void) 419 { 420 install_auto_complete_handler("printenv", var_complete); 421 install_auto_complete_handler("setenv", var_complete); 422 #if defined(CONFIG_CMD_RUN) 423 install_auto_complete_handler("run", var_complete); 424 #endif 425 } 426 427 /*************************************************************************************/ 428 429 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 430 { 431 cmd_tbl_t *cmdtp; 432 const char *p; 433 int len, clen; 434 int n_found = 0; 435 const char *cmd; 436 437 /* sanity? */ 438 if (maxv < 2) 439 return -2; 440 441 cmdv[0] = NULL; 442 443 if (argc == 0) { 444 /* output full list of commands */ 445 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 446 if (n_found >= maxv - 2) { 447 cmdv[n_found++] = "..."; 448 break; 449 } 450 cmdv[n_found++] = cmdtp->name; 451 } 452 cmdv[n_found] = NULL; 453 return n_found; 454 } 455 456 /* more than one arg or one but the start of the next */ 457 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { 458 cmdtp = find_cmd(argv[0]); 459 if (cmdtp == NULL || cmdtp->complete == NULL) { 460 cmdv[0] = NULL; 461 return 0; 462 } 463 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); 464 } 465 466 cmd = argv[0]; 467 /* 468 * Some commands allow length modifiers (like "cp.b"); 469 * compare command name only until first dot. 470 */ 471 p = strchr(cmd, '.'); 472 if (p == NULL) 473 len = strlen(cmd); 474 else 475 len = p - cmd; 476 477 /* return the partial matches */ 478 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 479 480 clen = strlen(cmdtp->name); 481 if (clen < len) 482 continue; 483 484 if (memcmp(cmd, cmdtp->name, len) != 0) 485 continue; 486 487 /* too many! */ 488 if (n_found >= maxv - 2) { 489 cmdv[n_found++] = "..."; 490 break; 491 } 492 493 cmdv[n_found++] = cmdtp->name; 494 } 495 496 cmdv[n_found] = NULL; 497 return n_found; 498 } 499 500 static int make_argv(char *s, int argvsz, char *argv[]) 501 { 502 int argc = 0; 503 504 /* split into argv */ 505 while (argc < argvsz - 1) { 506 507 /* skip any white space */ 508 while ((*s == ' ') || (*s == '\t')) 509 ++s; 510 511 if (*s == '\0') /* end of s, no more args */ 512 break; 513 514 argv[argc++] = s; /* begin of argument string */ 515 516 /* find end of string */ 517 while (*s && (*s != ' ') && (*s != '\t')) 518 ++s; 519 520 if (*s == '\0') /* end of s, no more args */ 521 break; 522 523 *s++ = '\0'; /* terminate current arg */ 524 } 525 argv[argc] = NULL; 526 527 return argc; 528 } 529 530 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) 531 { 532 int ll = leader != NULL ? strlen(leader) : 0; 533 int sl = sep != NULL ? strlen(sep) : 0; 534 int len, i; 535 536 if (banner) { 537 puts("\n"); 538 puts(banner); 539 } 540 541 i = linemax; /* force leader and newline */ 542 while (*argv != NULL) { 543 len = strlen(*argv) + sl; 544 if (i + len >= linemax) { 545 puts("\n"); 546 if (leader) 547 puts(leader); 548 i = ll - sl; 549 } else if (sep) 550 puts(sep); 551 puts(*argv++); 552 i += len; 553 } 554 printf("\n"); 555 } 556 557 static int find_common_prefix(char *argv[]) 558 { 559 int i, len; 560 char *anchor, *s, *t; 561 562 if (*argv == NULL) 563 return 0; 564 565 /* begin with max */ 566 anchor = *argv++; 567 len = strlen(anchor); 568 while ((t = *argv++) != NULL) { 569 s = anchor; 570 for (i = 0; i < len; i++, t++, s++) { 571 if (*t != *s) 572 break; 573 } 574 len = s - anchor; 575 } 576 return len; 577 } 578 579 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */ 580 581 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) 582 { 583 int n = *np, col = *colp; 584 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 585 char *cmdv[20]; 586 char *s, *t; 587 const char *sep; 588 int i, j, k, len, seplen, argc; 589 int cnt; 590 char last_char; 591 592 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0) 593 return 0; /* not in normal console */ 594 595 cnt = strlen(buf); 596 if (cnt >= 1) 597 last_char = buf[cnt - 1]; 598 else 599 last_char = '\0'; 600 601 /* copy to secondary buffer which will be affected */ 602 strcpy(tmp_buf, buf); 603 604 /* separate into argv */ 605 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); 606 607 /* do the completion and return the possible completions */ 608 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); 609 610 /* no match; bell and out */ 611 if (i == 0) { 612 if (argc > 1) /* allow tab for non command */ 613 return 0; 614 putc('\a'); 615 return 1; 616 } 617 618 s = NULL; 619 len = 0; 620 sep = NULL; 621 seplen = 0; 622 if (i == 1) { /* one match; perfect */ 623 k = strlen(argv[argc - 1]); 624 s = cmdv[0] + k; 625 len = strlen(s); 626 sep = " "; 627 seplen = 1; 628 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ 629 k = strlen(argv[argc - 1]); 630 j -= k; 631 if (j > 0) { 632 s = cmdv[0] + k; 633 len = j; 634 } 635 } 636 637 if (s != NULL) { 638 k = len + seplen; 639 /* make sure it fits */ 640 if (n + k >= CONFIG_SYS_CBSIZE - 2) { 641 putc('\a'); 642 return 1; 643 } 644 645 t = buf + cnt; 646 for (i = 0; i < len; i++) 647 *t++ = *s++; 648 if (sep != NULL) 649 for (i = 0; i < seplen; i++) 650 *t++ = sep[i]; 651 *t = '\0'; 652 n += k; 653 col += k; 654 puts(t - k); 655 if (sep == NULL) 656 putc('\a'); 657 *np = n; 658 *colp = col; 659 } else { 660 print_argv(NULL, " ", " ", 78, cmdv); 661 662 puts(prompt); 663 puts(buf); 664 } 665 return 1; 666 } 667 668 #endif 669 670 #ifdef CMD_DATA_SIZE 671 int cmd_get_data_size(char* arg, int default_size) 672 { 673 /* Check for a size specification .b, .w or .l. 674 */ 675 int len = strlen(arg); 676 if (len > 2 && arg[len-2] == '.') { 677 switch(arg[len-1]) { 678 case 'b': 679 return 1; 680 case 'w': 681 return 2; 682 case 'l': 683 return 4; 684 case 's': 685 return -2; 686 default: 687 return -1; 688 } 689 } 690 return default_size; 691 } 692 #endif 693