common/cmd_flash.c

   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 #ifndef CONFIG_SYS_NO_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_SYS_NO_FLASH */
 275
 276 static int do_flinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 277 {
 278 #ifndef CONFIG_SYS_NO_FLASH
 279         ulong bank;
 280 #endif
 281
 282 #ifdef CONFIG_HAS_DATAFLASH
 283         dataflash_print_info();
 284 #endif
 285
 286 #ifndef CONFIG_SYS_NO_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_SYS_NO_FLASH */
 305         return 0;
 306 }
 307
 308 static int do_flerase(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 309 {
 310 #ifndef CONFIG_SYS_NO_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, &sect_first, &sect_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_SYS_NO_FLASH */
 399 }
 400
 401 #ifndef CONFIG_SYS_NO_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_SYS_NO_FLASH */
 440
 441 static int do_protect(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 442 {
 443         int rcode = 0;
 444 #ifndef CONFIG_SYS_NO_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_SYS_NO_FLASH */
 454 #ifdef CONFIG_HAS_DATAFLASH
 455         int status;
 456 #endif
 457 #if !defined(CONFIG_SYS_NO_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_SYS_NO_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 #ifndef CONFIG_SYS_NO_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, &sect_first, &sect_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_SYS_NO_FLASH */
 615         return rcode;
 616 }
 617
 618 #ifndef CONFIG_SYS_NO_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_SYS_NO_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