1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * FLASH support 10 */ 11 #include <common.h> 12 #include <command.h> 13 14 #ifdef CONFIG_HAS_DATAFLASH 15 #include <dataflash.h> 16 #endif 17 18 #if defined(CONFIG_CMD_MTDPARTS) 19 #include <jffs2/jffs2.h> 20 21 /* partition handling routines */ 22 int mtdparts_init(void); 23 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num); 24 int find_dev_and_part(const char *id, struct mtd_device **dev, 25 u8 *part_num, struct part_info **part); 26 #endif 27 28 #ifdef CONFIG_MTD_NOR_FLASH 29 #include <flash.h> 30 #include <mtd/cfi_flash.h> 31 extern flash_info_t flash_info[]; /* info for FLASH chips */ 32 33 /* 34 * The user interface starts numbering for Flash banks with 1 35 * for historical reasons. 36 */ 37 38 /* 39 * this routine looks for an abbreviated flash range specification. 40 * the syntax is B:SF[-SL], where B is the bank number, SF is the first 41 * sector to erase, and SL is the last sector to erase (defaults to SF). 42 * bank numbers start at 1 to be consistent with other specs, sector numbers 43 * start at zero. 44 * 45 * returns: 1 - correct spec; *pinfo, *psf and *psl are 46 * set appropriately 47 * 0 - doesn't look like an abbreviated spec 48 * -1 - looks like an abbreviated spec, but got 49 * a parsing error, a number out of range, 50 * or an invalid flash bank. 51 */ 52 static int 53 abbrev_spec (char *str, flash_info_t ** pinfo, int *psf, int *psl) 54 { 55 flash_info_t *fp; 56 int bank, first, last; 57 char *p, *ep; 58 59 if ((p = strchr (str, ':')) == NULL) 60 return 0; 61 *p++ = '\0'; 62 63 bank = simple_strtoul (str, &ep, 10); 64 if (ep == str || *ep != '\0' || 65 bank < 1 || bank > CONFIG_SYS_MAX_FLASH_BANKS || 66 (fp = &flash_info[bank - 1])->flash_id == FLASH_UNKNOWN) 67 return -1; 68 69 str = p; 70 if ((p = strchr (str, '-')) != NULL) 71 *p++ = '\0'; 72 73 first = simple_strtoul (str, &ep, 10); 74 if (ep == str || *ep != '\0' || first >= fp->sector_count) 75 return -1; 76 77 if (p != NULL) { 78 last = simple_strtoul (p, &ep, 10); 79 if (ep == p || *ep != '\0' || 80 last < first || last >= fp->sector_count) 81 return -1; 82 } else { 83 last = first; 84 } 85 86 *pinfo = fp; 87 *psf = first; 88 *psl = last; 89 90 return 1; 91 } 92 93 /* 94 * Take *addr in Flash and adjust it to fall on the end of its sector 95 */ 96 int flash_sect_roundb (ulong *addr) 97 { 98 flash_info_t *info; 99 ulong bank, sector_end_addr; 100 char found; 101 int i; 102 103 /* find the end addr of the sector where the *addr is */ 104 found = 0; 105 for (bank = 0; bank < CONFIG_SYS_MAX_FLASH_BANKS && !found; ++bank) { 106 info = &flash_info[bank]; 107 for (i = 0; i < info->sector_count && !found; ++i) { 108 /* get the end address of the sector */ 109 if (i == info->sector_count - 1) { 110 sector_end_addr = info->start[0] + 111 info->size - 1; 112 } else { 113 sector_end_addr = info->start[i+1] - 1; 114 } 115 116 if (*addr <= sector_end_addr && 117 *addr >= info->start[i]) { 118 found = 1; 119 /* adjust *addr if necessary */ 120 if (*addr < sector_end_addr) 121 *addr = sector_end_addr; 122 } /* sector */ 123 } /* bank */ 124 } 125 if (!found) { 126 /* error, address not in flash */ 127 printf("Error: end address (0x%08lx) not in flash!\n", *addr); 128 return 1; 129 } 130 131 return 0; 132 } 133 134 /* 135 * This function computes the start and end addresses for both 136 * erase and protect commands. The range of the addresses on which 137 * either of the commands is to operate can be given in two forms: 138 * 1. <cmd> start end - operate on <'start', 'end') 139 * 2. <cmd> start +length - operate on <'start', start + length) 140 * If the second form is used and the end address doesn't fall on the 141 * sector boundary, than it will be adjusted to the next sector boundary. 142 * If it isn't in the flash, the function will fail (return -1). 143 * Input: 144 * arg1, arg2: address specification (i.e. both command arguments) 145 * Output: 146 * addr_first, addr_last: computed address range 147 * Return: 148 * 1: success 149 * -1: failure (bad format, bad address). 150 */ 151 static int 152 addr_spec(char *arg1, char *arg2, ulong *addr_first, ulong *addr_last) 153 { 154 char *ep; 155 char len_used; /* indicates if the "start +length" form used */ 156 157 *addr_first = simple_strtoul(arg1, &ep, 16); 158 if (ep == arg1 || *ep != '\0') 159 return -1; 160 161 len_used = 0; 162 if (arg2 && *arg2 == '+'){ 163 len_used = 1; 164 ++arg2; 165 } 166 167 *addr_last = simple_strtoul(arg2, &ep, 16); 168 if (ep == arg2 || *ep != '\0') 169 return -1; 170 171 if (len_used){ 172 /* 173 * *addr_last has the length, compute correct *addr_last 174 * XXX watch out for the integer overflow! Right now it is 175 * checked for in both the callers. 176 */ 177 *addr_last = *addr_first + *addr_last - 1; 178 179 /* 180 * It may happen that *addr_last doesn't fall on the sector 181 * boundary. We want to round such an address to the next 182 * sector boundary, so that the commands don't fail later on. 183 */ 184 185 if (flash_sect_roundb(addr_last) > 0) 186 return -1; 187 } /* "start +length" from used */ 188 189 return 1; 190 } 191 192 static int 193 flash_fill_sect_ranges (ulong addr_first, ulong addr_last, 194 int *s_first, int *s_last, 195 int *s_count ) 196 { 197 flash_info_t *info; 198 ulong bank; 199 int rcode = 0; 200 201 *s_count = 0; 202 203 for (bank=0; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank) { 204 s_first[bank] = -1; /* first sector to erase */ 205 s_last [bank] = -1; /* last sector to erase */ 206 } 207 208 for (bank=0,info = &flash_info[0]; 209 (bank < CONFIG_SYS_MAX_FLASH_BANKS) && (addr_first <= addr_last); 210 ++bank, ++info) { 211 ulong b_end; 212 int sect; 213 short s_end; 214 215 if (info->flash_id == FLASH_UNKNOWN) { 216 continue; 217 } 218 219 b_end = info->start[0] + info->size - 1; /* bank end addr */ 220 s_end = info->sector_count - 1; /* last sector */ 221 222 223 for (sect=0; sect < info->sector_count; ++sect) { 224 ulong end; /* last address in current sect */ 225 226 end = (sect == s_end) ? b_end : info->start[sect + 1] - 1; 227 228 if (addr_first > end) 229 continue; 230 if (addr_last < info->start[sect]) 231 continue; 232 233 if (addr_first == info->start[sect]) { 234 s_first[bank] = sect; 235 } 236 if (addr_last == end) { 237 s_last[bank] = sect; 238 } 239 } 240 if (s_first[bank] >= 0) { 241 if (s_last[bank] < 0) { 242 if (addr_last > b_end) { 243 s_last[bank] = s_end; 244 } else { 245 puts ("Error: end address" 246 " not on sector boundary\n"); 247 rcode = 1; 248 break; 249 } 250 } 251 if (s_last[bank] < s_first[bank]) { 252 puts ("Error: end sector" 253 " precedes start sector\n"); 254 rcode = 1; 255 break; 256 } 257 sect = s_last[bank]; 258 addr_first = (sect == s_end) ? b_end + 1: info->start[sect + 1]; 259 (*s_count) += s_last[bank] - s_first[bank] + 1; 260 } else if (addr_first >= info->start[0] && addr_first < b_end) { 261 puts ("Error: start address not on sector boundary\n"); 262 rcode = 1; 263 break; 264 } else if (s_last[bank] >= 0) { 265 puts ("Error: cannot span across banks when they are" 266 " mapped in reverse order\n"); 267 rcode = 1; 268 break; 269 } 270 } 271 272 return rcode; 273 } 274 #endif /* CONFIG_MTD_NOR_FLASH */ 275 276 static int do_flinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 277 { 278 #ifdef CONFIG_MTD_NOR_FLASH 279 ulong bank; 280 #endif 281 282 #ifdef CONFIG_HAS_DATAFLASH 283 dataflash_print_info(); 284 #endif 285 286 #ifdef CONFIG_MTD_NOR_FLASH 287 if (argc == 1) { /* print info for all FLASH banks */ 288 for (bank=0; bank <CONFIG_SYS_MAX_FLASH_BANKS; ++bank) { 289 printf ("\nBank # %ld: ", bank+1); 290 291 flash_print_info (&flash_info[bank]); 292 } 293 return 0; 294 } 295 296 bank = simple_strtoul(argv[1], NULL, 16); 297 if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { 298 printf ("Only FLASH Banks # 1 ... # %d supported\n", 299 CONFIG_SYS_MAX_FLASH_BANKS); 300 return 1; 301 } 302 printf ("\nBank # %ld: ", bank); 303 flash_print_info (&flash_info[bank-1]); 304 #endif /* CONFIG_MTD_NOR_FLASH */ 305 return 0; 306 } 307 308 static int do_flerase(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 309 { 310 #ifdef CONFIG_MTD_NOR_FLASH 311 flash_info_t *info = NULL; 312 ulong bank, addr_first, addr_last; 313 int n, sect_first = 0, sect_last = 0; 314 #if defined(CONFIG_CMD_MTDPARTS) 315 struct mtd_device *dev; 316 struct part_info *part; 317 u8 dev_type, dev_num, pnum; 318 #endif 319 int rcode = 0; 320 321 if (argc < 2) 322 return CMD_RET_USAGE; 323 324 if (strcmp(argv[1], "all") == 0) { 325 for (bank=1; bank<=CONFIG_SYS_MAX_FLASH_BANKS; ++bank) { 326 printf ("Erase Flash Bank # %ld ", bank); 327 info = &flash_info[bank-1]; 328 rcode = flash_erase (info, 0, info->sector_count-1); 329 } 330 return rcode; 331 } 332 333 if ((n = abbrev_spec(argv[1], &info, §_first, §_last)) != 0) { 334 if (n < 0) { 335 puts ("Bad sector specification\n"); 336 return 1; 337 } 338 printf ("Erase Flash Sectors %d-%d in Bank # %zu ", 339 sect_first, sect_last, (info-flash_info)+1); 340 rcode = flash_erase(info, sect_first, sect_last); 341 return rcode; 342 } 343 344 #if defined(CONFIG_CMD_MTDPARTS) 345 /* erase <part-id> - erase partition */ 346 if ((argc == 2) && (mtd_id_parse(argv[1], NULL, &dev_type, &dev_num) == 0)) { 347 mtdparts_init(); 348 if (find_dev_and_part(argv[1], &dev, &pnum, &part) == 0) { 349 if (dev->id->type == MTD_DEV_TYPE_NOR) { 350 bank = dev->id->num; 351 info = &flash_info[bank]; 352 addr_first = part->offset + info->start[0]; 353 addr_last = addr_first + part->size - 1; 354 355 printf ("Erase Flash Partition %s, " 356 "bank %ld, 0x%08lx - 0x%08lx ", 357 argv[1], bank, addr_first, 358 addr_last); 359 360 rcode = flash_sect_erase(addr_first, addr_last); 361 return rcode; 362 } 363 364 printf("cannot erase, not a NOR device\n"); 365 return 1; 366 } 367 } 368 #endif 369 370 if (argc != 3) 371 return CMD_RET_USAGE; 372 373 if (strcmp(argv[1], "bank") == 0) { 374 bank = simple_strtoul(argv[2], NULL, 16); 375 if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { 376 printf ("Only FLASH Banks # 1 ... # %d supported\n", 377 CONFIG_SYS_MAX_FLASH_BANKS); 378 return 1; 379 } 380 printf ("Erase Flash Bank # %ld ", bank); 381 info = &flash_info[bank-1]; 382 rcode = flash_erase (info, 0, info->sector_count-1); 383 return rcode; 384 } 385 386 if (addr_spec(argv[1], argv[2], &addr_first, &addr_last) < 0){ 387 printf ("Bad address format\n"); 388 return 1; 389 } 390 391 if (addr_first >= addr_last) 392 return CMD_RET_USAGE; 393 394 rcode = flash_sect_erase(addr_first, addr_last); 395 return rcode; 396 #else 397 return 0; 398 #endif /* CONFIG_MTD_NOR_FLASH */ 399 } 400 401 #ifdef CONFIG_MTD_NOR_FLASH 402 int flash_sect_erase (ulong addr_first, ulong addr_last) 403 { 404 flash_info_t *info; 405 ulong bank; 406 int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_FLASH_BANKS]; 407 int erased = 0; 408 int planned; 409 int rcode = 0; 410 411 rcode = flash_fill_sect_ranges (addr_first, addr_last, 412 s_first, s_last, &planned ); 413 414 if (planned && (rcode == 0)) { 415 for (bank=0,info = &flash_info[0]; 416 (bank < CONFIG_SYS_MAX_FLASH_BANKS) && (rcode == 0); 417 ++bank, ++info) { 418 if (s_first[bank]>=0) { 419 erased += s_last[bank] - s_first[bank] + 1; 420 debug ("Erase Flash from 0x%08lx to 0x%08lx " 421 "in Bank # %ld ", 422 info->start[s_first[bank]], 423 (s_last[bank] == info->sector_count) ? 424 info->start[0] + info->size - 1: 425 info->start[s_last[bank]+1] - 1, 426 bank+1); 427 rcode = flash_erase (info, s_first[bank], s_last[bank]); 428 } 429 } 430 if (rcode == 0) 431 printf("Erased %d sectors\n", erased); 432 } else if (rcode == 0) { 433 puts ("Error: start and/or end address" 434 " not on sector boundary\n"); 435 rcode = 1; 436 } 437 return rcode; 438 } 439 #endif /* CONFIG_MTD_NOR_FLASH */ 440 441 static int do_protect(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 442 { 443 int rcode = 0; 444 #ifdef CONFIG_MTD_NOR_FLASH 445 flash_info_t *info = NULL; 446 ulong bank; 447 int i, n, sect_first = 0, sect_last = 0; 448 #if defined(CONFIG_CMD_MTDPARTS) 449 struct mtd_device *dev; 450 struct part_info *part; 451 u8 dev_type, dev_num, pnum; 452 #endif 453 #endif /* CONFIG_MTD_NOR_FLASH */ 454 #ifdef CONFIG_HAS_DATAFLASH 455 int status; 456 #endif 457 #if defined(CONFIG_MTD_NOR_FLASH) || defined(CONFIG_HAS_DATAFLASH) 458 int p; 459 ulong addr_first, addr_last; 460 #endif 461 462 if (argc < 3) 463 return CMD_RET_USAGE; 464 465 #if defined(CONFIG_MTD_NOR_FLASH) || defined(CONFIG_HAS_DATAFLASH) 466 if (strcmp(argv[1], "off") == 0) 467 p = 0; 468 else if (strcmp(argv[1], "on") == 0) 469 p = 1; 470 else 471 return CMD_RET_USAGE; 472 #endif 473 474 #ifdef CONFIG_HAS_DATAFLASH 475 if ((strcmp(argv[2], "all") != 0) && (strcmp(argv[2], "bank") != 0)) { 476 addr_first = simple_strtoul(argv[2], NULL, 16); 477 addr_last = simple_strtoul(argv[3], NULL, 16); 478 479 if (addr_dataflash(addr_first) && addr_dataflash(addr_last)) { 480 status = dataflash_real_protect(p,addr_first,addr_last); 481 if (status < 0){ 482 puts ("Bad DataFlash sector specification\n"); 483 return 1; 484 } 485 printf("%sProtect %d DataFlash Sectors\n", 486 p ? "" : "Un-", status); 487 return 0; 488 } 489 } 490 #endif 491 492 #ifdef CONFIG_MTD_NOR_FLASH 493 if (strcmp(argv[2], "all") == 0) { 494 for (bank=1; bank<=CONFIG_SYS_MAX_FLASH_BANKS; ++bank) { 495 info = &flash_info[bank-1]; 496 if (info->flash_id == FLASH_UNKNOWN) { 497 continue; 498 } 499 printf ("%sProtect Flash Bank # %ld\n", 500 p ? "" : "Un-", bank); 501 502 for (i=0; i<info->sector_count; ++i) { 503 #if defined(CONFIG_SYS_FLASH_PROTECTION) 504 if (flash_real_protect(info, i, p)) 505 rcode = 1; 506 putc ('.'); 507 #else 508 info->protect[i] = p; 509 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 510 } 511 #if defined(CONFIG_SYS_FLASH_PROTECTION) 512 if (!rcode) puts (" done\n"); 513 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 514 } 515 return rcode; 516 } 517 518 if ((n = abbrev_spec(argv[2], &info, §_first, §_last)) != 0) { 519 if (n < 0) { 520 puts ("Bad sector specification\n"); 521 return 1; 522 } 523 printf("%sProtect Flash Sectors %d-%d in Bank # %zu\n", 524 p ? "" : "Un-", sect_first, sect_last, 525 (info-flash_info)+1); 526 for (i = sect_first; i <= sect_last; i++) { 527 #if defined(CONFIG_SYS_FLASH_PROTECTION) 528 if (flash_real_protect(info, i, p)) 529 rcode = 1; 530 putc ('.'); 531 #else 532 info->protect[i] = p; 533 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 534 } 535 536 #if defined(CONFIG_SYS_FLASH_PROTECTION) 537 if (!rcode) puts (" done\n"); 538 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 539 540 return rcode; 541 } 542 543 #if defined(CONFIG_CMD_MTDPARTS) 544 /* protect on/off <part-id> */ 545 if ((argc == 3) && (mtd_id_parse(argv[2], NULL, &dev_type, &dev_num) == 0)) { 546 mtdparts_init(); 547 if (find_dev_and_part(argv[2], &dev, &pnum, &part) == 0) { 548 if (dev->id->type == MTD_DEV_TYPE_NOR) { 549 bank = dev->id->num; 550 info = &flash_info[bank]; 551 addr_first = part->offset + info->start[0]; 552 addr_last = addr_first + part->size - 1; 553 554 printf ("%sProtect Flash Partition %s, " 555 "bank %ld, 0x%08lx - 0x%08lx\n", 556 p ? "" : "Un", argv[1], 557 bank, addr_first, addr_last); 558 559 rcode = flash_sect_protect (p, addr_first, addr_last); 560 return rcode; 561 } 562 563 printf("cannot %sprotect, not a NOR device\n", 564 p ? "" : "un"); 565 return 1; 566 } 567 } 568 #endif 569 570 if (argc != 4) 571 return CMD_RET_USAGE; 572 573 if (strcmp(argv[2], "bank") == 0) { 574 bank = simple_strtoul(argv[3], NULL, 16); 575 if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { 576 printf ("Only FLASH Banks # 1 ... # %d supported\n", 577 CONFIG_SYS_MAX_FLASH_BANKS); 578 return 1; 579 } 580 printf ("%sProtect Flash Bank # %ld\n", 581 p ? "" : "Un-", bank); 582 info = &flash_info[bank-1]; 583 584 if (info->flash_id == FLASH_UNKNOWN) { 585 puts ("missing or unknown FLASH type\n"); 586 return 1; 587 } 588 for (i=0; i<info->sector_count; ++i) { 589 #if defined(CONFIG_SYS_FLASH_PROTECTION) 590 if (flash_real_protect(info, i, p)) 591 rcode = 1; 592 putc ('.'); 593 #else 594 info->protect[i] = p; 595 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 596 } 597 598 #if defined(CONFIG_SYS_FLASH_PROTECTION) 599 if (!rcode) puts (" done\n"); 600 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 601 602 return rcode; 603 } 604 605 if (addr_spec(argv[2], argv[3], &addr_first, &addr_last) < 0){ 606 printf("Bad address format\n"); 607 return 1; 608 } 609 610 if (addr_first >= addr_last) 611 return CMD_RET_USAGE; 612 613 rcode = flash_sect_protect (p, addr_first, addr_last); 614 #endif /* CONFIG_MTD_NOR_FLASH */ 615 return rcode; 616 } 617 618 #ifdef CONFIG_MTD_NOR_FLASH 619 int flash_sect_protect (int p, ulong addr_first, ulong addr_last) 620 { 621 flash_info_t *info; 622 ulong bank; 623 int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_FLASH_BANKS]; 624 int protected, i; 625 int planned; 626 int rcode; 627 628 rcode = flash_fill_sect_ranges( addr_first, addr_last, s_first, s_last, &planned ); 629 630 protected = 0; 631 632 if (planned && (rcode == 0)) { 633 for (bank=0,info = &flash_info[0]; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank, ++info) { 634 if (info->flash_id == FLASH_UNKNOWN) { 635 continue; 636 } 637 638 if (s_first[bank]>=0 && s_first[bank]<=s_last[bank]) { 639 debug ("%sProtecting sectors %d..%d in bank %ld\n", 640 p ? "" : "Un-", 641 s_first[bank], s_last[bank], bank+1); 642 protected += s_last[bank] - s_first[bank] + 1; 643 for (i=s_first[bank]; i<=s_last[bank]; ++i) { 644 #if defined(CONFIG_SYS_FLASH_PROTECTION) 645 if (flash_real_protect(info, i, p)) 646 rcode = 1; 647 putc ('.'); 648 #else 649 info->protect[i] = p; 650 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 651 } 652 } 653 } 654 #if defined(CONFIG_SYS_FLASH_PROTECTION) 655 puts (" done\n"); 656 #endif /* CONFIG_SYS_FLASH_PROTECTION */ 657 658 printf ("%sProtected %d sectors\n", 659 p ? "" : "Un-", protected); 660 } else if (rcode == 0) { 661 puts ("Error: start and/or end address" 662 " not on sector boundary\n"); 663 rcode = 1; 664 } 665 return rcode; 666 } 667 #endif /* CONFIG_MTD_NOR_FLASH */ 668 669 670 /**************************************************/ 671 #if defined(CONFIG_CMD_MTDPARTS) 672 # define TMP_ERASE "erase <part-id>\n - erase partition\n" 673 # define TMP_PROT_ON "protect on <part-id>\n - protect partition\n" 674 # define TMP_PROT_OFF "protect off <part-id>\n - make partition writable\n" 675 #else 676 # define TMP_ERASE /* empty */ 677 # define TMP_PROT_ON /* empty */ 678 # define TMP_PROT_OFF /* empty */ 679 #endif 680 681 U_BOOT_CMD( 682 flinfo, 2, 1, do_flinfo, 683 "print FLASH memory information", 684 "\n - print information for all FLASH memory banks\n" 685 "flinfo N\n - print information for FLASH memory bank # N" 686 ); 687 688 U_BOOT_CMD( 689 erase, 3, 0, do_flerase, 690 "erase FLASH memory", 691 "start end\n" 692 " - erase FLASH from addr 'start' to addr 'end'\n" 693 "erase start +len\n" 694 " - erase FLASH from addr 'start' to the end of sect " 695 "w/addr 'start'+'len'-1\n" 696 "erase N:SF[-SL]\n - erase sectors SF-SL in FLASH bank # N\n" 697 "erase bank N\n - erase FLASH bank # N\n" 698 TMP_ERASE 699 "erase all\n - erase all FLASH banks" 700 ); 701 702 U_BOOT_CMD( 703 protect, 4, 0, do_protect, 704 "enable or disable FLASH write protection", 705 "on start end\n" 706 " - protect FLASH from addr 'start' to addr 'end'\n" 707 "protect on start +len\n" 708 " - protect FLASH from addr 'start' to end of sect " 709 "w/addr 'start'+'len'-1\n" 710 "protect on N:SF[-SL]\n" 711 " - protect sectors SF-SL in FLASH bank # N\n" 712 "protect on bank N\n - protect FLASH bank # N\n" 713 TMP_PROT_ON 714 "protect on all\n - protect all FLASH banks\n" 715 "protect off start end\n" 716 " - make FLASH from addr 'start' to addr 'end' writable\n" 717 "protect off start +len\n" 718 " - make FLASH from addr 'start' to end of sect " 719 "w/addr 'start'+'len'-1 wrtable\n" 720 "protect off N:SF[-SL]\n" 721 " - make sectors SF-SL writable in FLASH bank # N\n" 722 "protect off bank N\n - make FLASH bank # N writable\n" 723 TMP_PROT_OFF 724 "protect off all\n - make all FLASH banks writable" 725 ); 726 727 #undef TMP_ERASE 728 #undef TMP_PROT_ON 729 #undef TMP_PROT_OFF 730