1 /* 2 * (C) Copyright 2000-2009 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 "" 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" 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..]" 208 ); 209 210 int 211 do_exit (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) 212 { 213 int r; 214 215 r = 0; 216 if (argc > 1) 217 r = simple_strtoul(argv[1], NULL, 10); 218 219 return -r - 2; 220 } 221 222 U_BOOT_CMD( 223 exit, 2, 1, do_exit, 224 "exit script", 225 "" 226 ); 227 228 229 #endif 230 231 /* 232 * Use puts() instead of printf() to avoid printf buffer overflow 233 * for long help messages 234 */ 235 236 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int 237 flag, int argc, char *argv[]) 238 { 239 int i; 240 int rcode = 0; 241 242 if (argc == 1) { /*show list of commands */ 243 cmd_tbl_t *cmd_array[cmd_items]; 244 int i, j, swaps; 245 246 /* Make array of commands from .uboot_cmd section */ 247 cmdtp = cmd_start; 248 for (i = 0; i < cmd_items; i++) { 249 cmd_array[i] = cmdtp++; 250 } 251 252 /* Sort command list (trivial bubble sort) */ 253 for (i = cmd_items - 1; i > 0; --i) { 254 swaps = 0; 255 for (j = 0; j < i; ++j) { 256 if (strcmp (cmd_array[j]->name, 257 cmd_array[j + 1]->name) > 0) { 258 cmd_tbl_t *tmp; 259 tmp = cmd_array[j]; 260 cmd_array[j] = cmd_array[j + 1]; 261 cmd_array[j + 1] = tmp; 262 ++swaps; 263 } 264 } 265 if (!swaps) 266 break; 267 } 268 269 /* print short help (usage) */ 270 for (i = 0; i < cmd_items; i++) { 271 const char *usage = cmd_array[i]->usage; 272 273 /* allow user abort */ 274 if (ctrlc ()) 275 return 1; 276 if (usage == NULL) 277 continue; 278 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH, 279 cmd_array[i]->name, usage); 280 } 281 return 0; 282 } 283 /* 284 * command help (long version) 285 */ 286 for (i = 1; i < argc; ++i) { 287 if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) { 288 rcode |= cmd_usage(cmdtp); 289 } else { 290 printf ("Unknown command '%s' - try 'help'" 291 " without arguments for list of all" 292 " known commands\n\n", argv[i] 293 ); 294 rcode = 1; 295 } 296 } 297 return rcode; 298 } 299 300 int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 301 { 302 return _do_help(&__u_boot_cmd_start, 303 &__u_boot_cmd_end - &__u_boot_cmd_start, 304 cmdtp, flag, argc, argv); 305 } 306 307 308 U_BOOT_CMD( 309 help, CONFIG_SYS_MAXARGS, 1, do_help, 310 "print online help", 311 "[command ...]\n" 312 " - show help information (for 'command')\n" 313 "'help' prints online help for the monitor commands.\n\n" 314 "Without arguments, it prints a short usage message for all commands.\n\n" 315 "To get detailed help information for specific commands you can type\n" 316 "'help' with one or more command names as arguments." 317 ); 318 319 /* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */ 320 #ifdef CONFIG_SYS_LONGHELP 321 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 322 "?", CONFIG_SYS_MAXARGS, 1, do_help, 323 "alias for 'help'", 324 "" 325 }; 326 #else 327 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 328 "?", CONFIG_SYS_MAXARGS, 1, do_help, 329 "alias for 'help'" 330 }; 331 #endif /* CONFIG_SYS_LONGHELP */ 332 333 /*************************************************************************** 334 * find command table entry for a command 335 */ 336 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len) 337 { 338 cmd_tbl_t *cmdtp; 339 cmd_tbl_t *cmdtp_temp = table; /*Init value */ 340 const char *p; 341 int len; 342 int n_found = 0; 343 344 /* 345 * Some commands allow length modifiers (like "cp.b"); 346 * compare command name only until first dot. 347 */ 348 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd); 349 350 for (cmdtp = table; 351 cmdtp != table + table_len; 352 cmdtp++) { 353 if (strncmp (cmd, cmdtp->name, len) == 0) { 354 if (len == strlen (cmdtp->name)) 355 return cmdtp; /* full match */ 356 357 cmdtp_temp = cmdtp; /* abbreviated command ? */ 358 n_found++; 359 } 360 } 361 if (n_found == 1) { /* exactly one match */ 362 return cmdtp_temp; 363 } 364 365 return NULL; /* not found or ambiguous command */ 366 } 367 368 cmd_tbl_t *find_cmd (const char *cmd) 369 { 370 int len = &__u_boot_cmd_end - &__u_boot_cmd_start; 371 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len); 372 } 373 374 int cmd_usage(cmd_tbl_t *cmdtp) 375 { 376 printf("%s - %s\n\n", cmdtp->name, cmdtp->usage); 377 378 #ifdef CONFIG_SYS_LONGHELP 379 printf("Usage:\n%s ", cmdtp->name); 380 381 if (!cmdtp->help) { 382 puts ("- No additional help available.\n"); 383 return 1; 384 } 385 386 puts (cmdtp->help); 387 putc ('\n'); 388 #endif /* CONFIG_SYS_LONGHELP */ 389 return 0; 390 } 391 392 #ifdef CONFIG_AUTO_COMPLETE 393 394 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 395 { 396 static char tmp_buf[512]; 397 int space; 398 399 space = last_char == '\0' || last_char == ' ' || last_char == '\t'; 400 401 if (space && argc == 1) 402 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); 403 404 if (!space && argc == 2) 405 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); 406 407 return 0; 408 } 409 410 static void install_auto_complete_handler(const char *cmd, 411 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) 412 { 413 cmd_tbl_t *cmdtp; 414 415 cmdtp = find_cmd(cmd); 416 if (cmdtp == NULL) 417 return; 418 419 cmdtp->complete = complete; 420 } 421 422 void install_auto_complete(void) 423 { 424 install_auto_complete_handler("printenv", var_complete); 425 install_auto_complete_handler("setenv", var_complete); 426 #if defined(CONFIG_CMD_RUN) 427 install_auto_complete_handler("run", var_complete); 428 #endif 429 } 430 431 /*************************************************************************************/ 432 433 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 434 { 435 cmd_tbl_t *cmdtp; 436 const char *p; 437 int len, clen; 438 int n_found = 0; 439 const char *cmd; 440 441 /* sanity? */ 442 if (maxv < 2) 443 return -2; 444 445 cmdv[0] = NULL; 446 447 if (argc == 0) { 448 /* output full list of commands */ 449 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 450 if (n_found >= maxv - 2) { 451 cmdv[n_found++] = "..."; 452 break; 453 } 454 cmdv[n_found++] = cmdtp->name; 455 } 456 cmdv[n_found] = NULL; 457 return n_found; 458 } 459 460 /* more than one arg or one but the start of the next */ 461 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { 462 cmdtp = find_cmd(argv[0]); 463 if (cmdtp == NULL || cmdtp->complete == NULL) { 464 cmdv[0] = NULL; 465 return 0; 466 } 467 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); 468 } 469 470 cmd = argv[0]; 471 /* 472 * Some commands allow length modifiers (like "cp.b"); 473 * compare command name only until first dot. 474 */ 475 p = strchr(cmd, '.'); 476 if (p == NULL) 477 len = strlen(cmd); 478 else 479 len = p - cmd; 480 481 /* return the partial matches */ 482 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 483 484 clen = strlen(cmdtp->name); 485 if (clen < len) 486 continue; 487 488 if (memcmp(cmd, cmdtp->name, len) != 0) 489 continue; 490 491 /* too many! */ 492 if (n_found >= maxv - 2) { 493 cmdv[n_found++] = "..."; 494 break; 495 } 496 497 cmdv[n_found++] = cmdtp->name; 498 } 499 500 cmdv[n_found] = NULL; 501 return n_found; 502 } 503 504 static int make_argv(char *s, int argvsz, char *argv[]) 505 { 506 int argc = 0; 507 508 /* split into argv */ 509 while (argc < argvsz - 1) { 510 511 /* skip any white space */ 512 while ((*s == ' ') || (*s == '\t')) 513 ++s; 514 515 if (*s == '\0') /* end of s, no more args */ 516 break; 517 518 argv[argc++] = s; /* begin of argument string */ 519 520 /* find end of string */ 521 while (*s && (*s != ' ') && (*s != '\t')) 522 ++s; 523 524 if (*s == '\0') /* end of s, no more args */ 525 break; 526 527 *s++ = '\0'; /* terminate current arg */ 528 } 529 argv[argc] = NULL; 530 531 return argc; 532 } 533 534 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) 535 { 536 int ll = leader != NULL ? strlen(leader) : 0; 537 int sl = sep != NULL ? strlen(sep) : 0; 538 int len, i; 539 540 if (banner) { 541 puts("\n"); 542 puts(banner); 543 } 544 545 i = linemax; /* force leader and newline */ 546 while (*argv != NULL) { 547 len = strlen(*argv) + sl; 548 if (i + len >= linemax) { 549 puts("\n"); 550 if (leader) 551 puts(leader); 552 i = ll - sl; 553 } else if (sep) 554 puts(sep); 555 puts(*argv++); 556 i += len; 557 } 558 printf("\n"); 559 } 560 561 static int find_common_prefix(char *argv[]) 562 { 563 int i, len; 564 char *anchor, *s, *t; 565 566 if (*argv == NULL) 567 return 0; 568 569 /* begin with max */ 570 anchor = *argv++; 571 len = strlen(anchor); 572 while ((t = *argv++) != NULL) { 573 s = anchor; 574 for (i = 0; i < len; i++, t++, s++) { 575 if (*t != *s) 576 break; 577 } 578 len = s - anchor; 579 } 580 return len; 581 } 582 583 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */ 584 585 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) 586 { 587 int n = *np, col = *colp; 588 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 589 char *cmdv[20]; 590 char *s, *t; 591 const char *sep; 592 int i, j, k, len, seplen, argc; 593 int cnt; 594 char last_char; 595 596 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0) 597 return 0; /* not in normal console */ 598 599 cnt = strlen(buf); 600 if (cnt >= 1) 601 last_char = buf[cnt - 1]; 602 else 603 last_char = '\0'; 604 605 /* copy to secondary buffer which will be affected */ 606 strcpy(tmp_buf, buf); 607 608 /* separate into argv */ 609 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); 610 611 /* do the completion and return the possible completions */ 612 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); 613 614 /* no match; bell and out */ 615 if (i == 0) { 616 if (argc > 1) /* allow tab for non command */ 617 return 0; 618 putc('\a'); 619 return 1; 620 } 621 622 s = NULL; 623 len = 0; 624 sep = NULL; 625 seplen = 0; 626 if (i == 1) { /* one match; perfect */ 627 k = strlen(argv[argc - 1]); 628 s = cmdv[0] + k; 629 len = strlen(s); 630 sep = " "; 631 seplen = 1; 632 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ 633 k = strlen(argv[argc - 1]); 634 j -= k; 635 if (j > 0) { 636 s = cmdv[0] + k; 637 len = j; 638 } 639 } 640 641 if (s != NULL) { 642 k = len + seplen; 643 /* make sure it fits */ 644 if (n + k >= CONFIG_SYS_CBSIZE - 2) { 645 putc('\a'); 646 return 1; 647 } 648 649 t = buf + cnt; 650 for (i = 0; i < len; i++) 651 *t++ = *s++; 652 if (sep != NULL) 653 for (i = 0; i < seplen; i++) 654 *t++ = sep[i]; 655 *t = '\0'; 656 n += k; 657 col += k; 658 puts(t - k); 659 if (sep == NULL) 660 putc('\a'); 661 *np = n; 662 *colp = col; 663 } else { 664 print_argv(NULL, " ", " ", 78, cmdv); 665 666 puts(prompt); 667 puts(buf); 668 } 669 return 1; 670 } 671 672 #endif 673 674 #ifdef CMD_DATA_SIZE 675 int cmd_get_data_size(char* arg, int default_size) 676 { 677 /* Check for a size specification .b, .w or .l. 678 */ 679 int len = strlen(arg); 680 if (len > 2 && arg[len-2] == '.') { 681 switch(arg[len-1]) { 682 case 'b': 683 return 1; 684 case 'w': 685 return 2; 686 case 'l': 687 return 4; 688 case 's': 689 return -2; 690 default: 691 return -1; 692 } 693 } 694 return default_size; 695 } 696 #endif 697