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 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 */ 236 237 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int 238 flag, int argc, char *argv[]) 239 { 240 int i; 241 int rcode = 0; 242 243 if (argc == 1) { /*show list of commands */ 244 cmd_tbl_t *cmd_array[cmd_items]; 245 int i, j, swaps; 246 247 /* Make array of commands from .uboot_cmd section */ 248 cmdtp = cmd_start; 249 for (i = 0; i < cmd_items; i++) { 250 cmd_array[i] = cmdtp++; 251 } 252 253 /* Sort command list (trivial bubble sort) */ 254 for (i = cmd_items - 1; i > 0; --i) { 255 swaps = 0; 256 for (j = 0; j < i; ++j) { 257 if (strcmp (cmd_array[j]->name, 258 cmd_array[j + 1]->name) > 0) { 259 cmd_tbl_t *tmp; 260 tmp = cmd_array[j]; 261 cmd_array[j] = cmd_array[j + 1]; 262 cmd_array[j + 1] = tmp; 263 ++swaps; 264 } 265 } 266 if (!swaps) 267 break; 268 } 269 270 /* print short help (usage) */ 271 for (i = 0; i < cmd_items; i++) { 272 const char *usage = cmd_array[i]->usage; 273 274 /* allow user abort */ 275 if (ctrlc ()) 276 return 1; 277 if (usage == NULL) 278 continue; 279 printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH, 280 cmd_array[i]->name, usage); 281 } 282 return 0; 283 } 284 /* 285 * command help (long version) 286 */ 287 for (i = 1; i < argc; ++i) { 288 if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) { 289 #ifdef CONFIG_SYS_LONGHELP 290 /* found - print (long) help info */ 291 puts (cmdtp->name); 292 putc (' '); 293 if (cmdtp->help) { 294 puts (cmdtp->help); 295 } else { 296 puts ("- No help available.\n"); 297 rcode = 1; 298 } 299 putc ('\n'); 300 #else /* no long help available */ 301 if (cmdtp->usage) 302 printf ("%s - %s\n", cmdtp->name, cmdtp->usage); 303 #endif /* CONFIG_SYS_LONGHELP */ 304 } else { 305 printf ("Unknown command '%s' - try 'help'" 306 " without arguments for list of all" 307 " known commands\n\n", argv[i] 308 ); 309 rcode = 1; 310 } 311 } 312 return rcode; 313 } 314 315 int do_help (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) 316 { 317 return _do_help(&__u_boot_cmd_start, 318 &__u_boot_cmd_end - &__u_boot_cmd_start, 319 cmdtp, flag, argc, argv); 320 } 321 322 323 U_BOOT_CMD( 324 help, CONFIG_SYS_MAXARGS, 1, do_help, 325 "print online help", 326 "[command ...]\n" 327 " - show help information (for 'command')\n" 328 "'help' prints online help for the monitor commands.\n\n" 329 "Without arguments, it prints a short usage message for all commands.\n\n" 330 "To get detailed help information for specific commands you can type\n" 331 "'help' with one or more command names as arguments.\n" 332 ); 333 334 /* This do not ust the U_BOOT_CMD macro as ? can't be used in symbol names */ 335 #ifdef CONFIG_SYS_LONGHELP 336 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 337 "?", CONFIG_SYS_MAXARGS, 1, do_help, 338 "alias for 'help'", 339 NULL 340 }; 341 #else 342 cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = { 343 "?", CONFIG_SYS_MAXARGS, 1, do_help, 344 "alias for 'help'" 345 }; 346 #endif /* CONFIG_SYS_LONGHELP */ 347 348 /*************************************************************************** 349 * find command table entry for a command 350 */ 351 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len) 352 { 353 cmd_tbl_t *cmdtp; 354 cmd_tbl_t *cmdtp_temp = table; /*Init value */ 355 const char *p; 356 int len; 357 int n_found = 0; 358 359 /* 360 * Some commands allow length modifiers (like "cp.b"); 361 * compare command name only until first dot. 362 */ 363 len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd); 364 365 for (cmdtp = table; 366 cmdtp != table + table_len; 367 cmdtp++) { 368 if (strncmp (cmd, cmdtp->name, len) == 0) { 369 if (len == strlen (cmdtp->name)) 370 return cmdtp; /* full match */ 371 372 cmdtp_temp = cmdtp; /* abbreviated command ? */ 373 n_found++; 374 } 375 } 376 if (n_found == 1) { /* exactly one match */ 377 return cmdtp_temp; 378 } 379 380 return NULL; /* not found or ambiguous command */ 381 } 382 383 cmd_tbl_t *find_cmd (const char *cmd) 384 { 385 int len = &__u_boot_cmd_end - &__u_boot_cmd_start; 386 return find_cmd_tbl(cmd, &__u_boot_cmd_start, len); 387 } 388 389 void cmd_usage(cmd_tbl_t *cmdtp) 390 { 391 printf("Usage:\n%s - %s\n\n", cmdtp->name, cmdtp->usage); 392 } 393 394 #ifdef CONFIG_AUTO_COMPLETE 395 396 int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 397 { 398 static char tmp_buf[512]; 399 int space; 400 401 space = last_char == '\0' || last_char == ' ' || last_char == '\t'; 402 403 if (space && argc == 1) 404 return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf); 405 406 if (!space && argc == 2) 407 return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf); 408 409 return 0; 410 } 411 412 static void install_auto_complete_handler(const char *cmd, 413 int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[])) 414 { 415 cmd_tbl_t *cmdtp; 416 417 cmdtp = find_cmd(cmd); 418 if (cmdtp == NULL) 419 return; 420 421 cmdtp->complete = complete; 422 } 423 424 void install_auto_complete(void) 425 { 426 install_auto_complete_handler("printenv", var_complete); 427 install_auto_complete_handler("setenv", var_complete); 428 #if defined(CONFIG_CMD_RUN) 429 install_auto_complete_handler("run", var_complete); 430 #endif 431 } 432 433 /*************************************************************************************/ 434 435 static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[]) 436 { 437 cmd_tbl_t *cmdtp; 438 const char *p; 439 int len, clen; 440 int n_found = 0; 441 const char *cmd; 442 443 /* sanity? */ 444 if (maxv < 2) 445 return -2; 446 447 cmdv[0] = NULL; 448 449 if (argc == 0) { 450 /* output full list of commands */ 451 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 452 if (n_found >= maxv - 2) { 453 cmdv[n_found++] = "..."; 454 break; 455 } 456 cmdv[n_found++] = cmdtp->name; 457 } 458 cmdv[n_found] = NULL; 459 return n_found; 460 } 461 462 /* more than one arg or one but the start of the next */ 463 if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) { 464 cmdtp = find_cmd(argv[0]); 465 if (cmdtp == NULL || cmdtp->complete == NULL) { 466 cmdv[0] = NULL; 467 return 0; 468 } 469 return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv); 470 } 471 472 cmd = argv[0]; 473 /* 474 * Some commands allow length modifiers (like "cp.b"); 475 * compare command name only until first dot. 476 */ 477 p = strchr(cmd, '.'); 478 if (p == NULL) 479 len = strlen(cmd); 480 else 481 len = p - cmd; 482 483 /* return the partial matches */ 484 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) { 485 486 clen = strlen(cmdtp->name); 487 if (clen < len) 488 continue; 489 490 if (memcmp(cmd, cmdtp->name, len) != 0) 491 continue; 492 493 /* too many! */ 494 if (n_found >= maxv - 2) { 495 cmdv[n_found++] = "..."; 496 break; 497 } 498 499 cmdv[n_found++] = cmdtp->name; 500 } 501 502 cmdv[n_found] = NULL; 503 return n_found; 504 } 505 506 static int make_argv(char *s, int argvsz, char *argv[]) 507 { 508 int argc = 0; 509 510 /* split into argv */ 511 while (argc < argvsz - 1) { 512 513 /* skip any white space */ 514 while ((*s == ' ') || (*s == '\t')) 515 ++s; 516 517 if (*s == '\0') /* end of s, no more args */ 518 break; 519 520 argv[argc++] = s; /* begin of argument string */ 521 522 /* find end of string */ 523 while (*s && (*s != ' ') && (*s != '\t')) 524 ++s; 525 526 if (*s == '\0') /* end of s, no more args */ 527 break; 528 529 *s++ = '\0'; /* terminate current arg */ 530 } 531 argv[argc] = NULL; 532 533 return argc; 534 } 535 536 static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[]) 537 { 538 int ll = leader != NULL ? strlen(leader) : 0; 539 int sl = sep != NULL ? strlen(sep) : 0; 540 int len, i; 541 542 if (banner) { 543 puts("\n"); 544 puts(banner); 545 } 546 547 i = linemax; /* force leader and newline */ 548 while (*argv != NULL) { 549 len = strlen(*argv) + sl; 550 if (i + len >= linemax) { 551 puts("\n"); 552 if (leader) 553 puts(leader); 554 i = ll - sl; 555 } else if (sep) 556 puts(sep); 557 puts(*argv++); 558 i += len; 559 } 560 printf("\n"); 561 } 562 563 static int find_common_prefix(char *argv[]) 564 { 565 int i, len; 566 char *anchor, *s, *t; 567 568 if (*argv == NULL) 569 return 0; 570 571 /* begin with max */ 572 anchor = *argv++; 573 len = strlen(anchor); 574 while ((t = *argv++) != NULL) { 575 s = anchor; 576 for (i = 0; i < len; i++, t++, s++) { 577 if (*t != *s) 578 break; 579 } 580 len = s - anchor; 581 } 582 return len; 583 } 584 585 static char tmp_buf[CONFIG_SYS_CBSIZE]; /* copy of console I/O buffer */ 586 587 int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp) 588 { 589 int n = *np, col = *colp; 590 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 591 char *cmdv[20]; 592 char *s, *t; 593 const char *sep; 594 int i, j, k, len, seplen, argc; 595 int cnt; 596 char last_char; 597 598 if (strcmp(prompt, CONFIG_SYS_PROMPT) != 0) 599 return 0; /* not in normal console */ 600 601 cnt = strlen(buf); 602 if (cnt >= 1) 603 last_char = buf[cnt - 1]; 604 else 605 last_char = '\0'; 606 607 /* copy to secondary buffer which will be affected */ 608 strcpy(tmp_buf, buf); 609 610 /* separate into argv */ 611 argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv); 612 613 /* do the completion and return the possible completions */ 614 i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv); 615 616 /* no match; bell and out */ 617 if (i == 0) { 618 if (argc > 1) /* allow tab for non command */ 619 return 0; 620 putc('\a'); 621 return 1; 622 } 623 624 s = NULL; 625 len = 0; 626 sep = NULL; 627 seplen = 0; 628 if (i == 1) { /* one match; perfect */ 629 k = strlen(argv[argc - 1]); 630 s = cmdv[0] + k; 631 len = strlen(s); 632 sep = " "; 633 seplen = 1; 634 } else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) { /* more */ 635 k = strlen(argv[argc - 1]); 636 j -= k; 637 if (j > 0) { 638 s = cmdv[0] + k; 639 len = j; 640 } 641 } 642 643 if (s != NULL) { 644 k = len + seplen; 645 /* make sure it fits */ 646 if (n + k >= CONFIG_SYS_CBSIZE - 2) { 647 putc('\a'); 648 return 1; 649 } 650 651 t = buf + cnt; 652 for (i = 0; i < len; i++) 653 *t++ = *s++; 654 if (sep != NULL) 655 for (i = 0; i < seplen; i++) 656 *t++ = sep[i]; 657 *t = '\0'; 658 n += k; 659 col += k; 660 puts(t - k); 661 if (sep == NULL) 662 putc('\a'); 663 *np = n; 664 *colp = col; 665 } else { 666 print_argv(NULL, " ", " ", 78, cmdv); 667 668 puts(prompt); 669 puts(buf); 670 } 671 return 1; 672 } 673 674 #endif 675 676 #ifdef CMD_DATA_SIZE 677 int cmd_get_data_size(char* arg, int default_size) 678 { 679 /* Check for a size specification .b, .w or .l. 680 */ 681 int len = strlen(arg); 682 if (len > 2 && arg[len-2] == '.') { 683 switch(arg[len-1]) { 684 case 'b': 685 return 1; 686 case 'w': 687 return 2; 688 case 'l': 689 return 4; 690 case 's': 691 return -2; 692 default: 693 return -1; 694 } 695 } 696 return default_size; 697 } 698 #endif 699