common/cmd_flash.c

   1 /*
   2  * (C) Copyright 2000
   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  * FLASH support
  26  */
  27 #include <common.h>
  28 #include <command.h>
  29
  30 #ifdef CONFIG_HAS_DATAFLASH
  31 #include <dataflash.h>
  32 #endif
  33
  34 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
  35 #include <jffs2/jffs2.h>
  36
  37 /* parition handling routines */
  38 int mtdparts_init(void);
  39 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
  40 int find_dev_and_part(const char *id, struct mtd_device **dev,
  41                 u8 *part_num, struct part_info **part);
  42 #endif
  43
  44 #ifndef CONFIG_SYS_NO_FLASH
  45 extern flash_info_t flash_info[];       /* info for FLASH chips */
  46
  47 /*
  48  * The user interface starts numbering for Flash banks with 1
  49  * for historical reasons.
  50  */
  51
  52 /*
  53  * this routine looks for an abbreviated flash range specification.
  54  * the syntax is B:SF[-SL], where B is the bank number, SF is the first
  55  * sector to erase, and SL is the last sector to erase (defaults to SF).
  56  * bank numbers start at 1 to be consistent with other specs, sector numbers
  57  * start at zero.
  58  *
  59  * returns:     1       - correct spec; *pinfo, *psf and *psl are
  60  *                        set appropriately
  61  *              0       - doesn't look like an abbreviated spec
  62  *              -1      - looks like an abbreviated spec, but got
  63  *                        a parsing error, a number out of range,
  64  *                        or an invalid flash bank.
  65  */
  66 static int
  67 abbrev_spec (char *str, flash_info_t ** pinfo, int *psf, int *psl)
  68 {
  69         flash_info_t *fp;
  70         int bank, first, last;
  71         char *p, *ep;
  72
  73         if ((p = strchr (str, ':')) == NULL)
  74                 return 0;
  75         *p++ = '\0';
  76
  77         bank = simple_strtoul (str, &ep, 10);
  78         if (ep == str || *ep != '\0' ||
  79                 bank < 1 || bank > CONFIG_SYS_MAX_FLASH_BANKS ||
  80                 (fp = &flash_info[bank - 1])->flash_id == FLASH_UNKNOWN)
  81                 return -1;
  82
  83         str = p;
  84         if ((p = strchr (str, '-')) != NULL)
  85                 *p++ = '\0';
  86
  87         first = simple_strtoul (str, &ep, 10);
  88         if (ep == str || *ep != '\0' || first >= fp->sector_count)
  89                 return -1;
  90
  91         if (p != NULL) {
  92                 last = simple_strtoul (p, &ep, 10);
  93                 if (ep == p || *ep != '\0' ||
  94                         last < first || last >= fp->sector_count)
  95                         return -1;
  96         } else {
  97                 last = first;
  98         }
  99
 100         *pinfo = fp;
 101         *psf = first;
 102         *psl = last;
 103
 104         return 1;
 105 }
 106
 107 /*
 108  * Take *addr in Flash and adjust it to fall on the end of its sector
 109  */
 110 int flash_sect_roundb (ulong *addr)
 111 {
 112         flash_info_t *info;
 113         ulong bank, sector_end_addr;
 114         char found;
 115         int i;
 116
 117         /* find the end addr of the sector where the *addr is */
 118         found = 0;
 119         for (bank = 0; bank < CONFIG_SYS_MAX_FLASH_BANKS && !found; ++bank) {
 120                 info = &flash_info[bank];
 121                 for (i = 0; i < info->sector_count && !found; ++i) {
 122                         /* get the end address of the sector */
 123                         if (i == info->sector_count - 1) {
 124                                 sector_end_addr = info->start[0] +
 125                                                                 info->size - 1;
 126                         } else {
 127                                 sector_end_addr = info->start[i+1] - 1;
 128                         }
 129
 130                         if (*addr <= sector_end_addr &&
 131                                                 *addr >= info->start[i]) {
 132                                 found = 1;
 133                                 /* adjust *addr if necessary */
 134                                 if (*addr < sector_end_addr)
 135                                         *addr = sector_end_addr;
 136                         } /* sector */
 137                 } /* bank */
 138         }
 139         if (!found) {
 140                 /* error, addres not in flash */
 141                 printf("Error: end address (0x%08lx) not in flash!\n", *addr);
 142                 return 1;
 143         }
 144
 145         return 0;
 146 }
 147
 148 /*
 149  * This function computes the start and end addresses for both
 150  * erase and protect commands. The range of the addresses on which
 151  * either of the commands is to operate can be given in two forms:
 152  * 1. <cmd> start end - operate on <'start',  'end')
 153  * 2. <cmd> start +length - operate on <'start', start + length)
 154  * If the second form is used and the end address doesn't fall on the
 155  * sector boundary, than it will be adjusted to the next sector boundary.
 156  * If it isn't in the flash, the function will fail (return -1).
 157  * Input:
 158  *    arg1, arg2: address specification (i.e. both command arguments)
 159  * Output:
 160  *    addr_first, addr_last: computed address range
 161  * Return:
 162  *    1: success
 163  *   -1: failure (bad format, bad address).
 164 */
 165 static int
 166 addr_spec(char *arg1, char *arg2, ulong *addr_first, ulong *addr_last)
 167 {
 168         char *ep;
 169         char len_used; /* indicates if the "start +length" form used */
 170
 171         *addr_first = simple_strtoul(arg1, &ep, 16);
 172         if (ep == arg1 || *ep != '\0')
 173                 return -1;
 174
 175         len_used = 0;
 176         if (arg2 && *arg2 == '+'){
 177                 len_used = 1;
 178                 ++arg2;
 179         }
 180
 181         *addr_last = simple_strtoul(arg2, &ep, 16);
 182         if (ep == arg2 || *ep != '\0')
 183                 return -1;
 184
 185         if (len_used){
 186                 /*
 187                  * *addr_last has the length, compute correct *addr_last
 188                  * XXX watch out for the integer overflow! Right now it is
 189                  * checked for in both the callers.
 190                  */
 191                 *addr_last = *addr_first + *addr_last - 1;
 192
 193                 /*
 194                  * It may happen that *addr_last doesn't fall on the sector
 195                  * boundary. We want to round such an address to the next
 196                  * sector boundary, so that the commands don't fail later on.
 197                  */
 198
 199                 if (flash_sect_roundb(addr_last) > 0)
 200                         return -1;
 201         } /* "start +length" from used */
 202
 203         return 1;
 204 }
 205
 206 static int
 207 flash_fill_sect_ranges (ulong addr_first, ulong addr_last,
 208                         int *s_first, int *s_last,
 209                         int *s_count )
 210 {
 211         flash_info_t *info;
 212         ulong bank;
 213         int rcode = 0;
 214
 215         *s_count = 0;
 216
 217         for (bank=0; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
 218                 s_first[bank] = -1;     /* first sector to erase        */
 219                 s_last [bank] = -1;     /* last  sector to erase        */
 220         }
 221
 222         for (bank=0,info = &flash_info[0];
 223              (bank < CONFIG_SYS_MAX_FLASH_BANKS) && (addr_first <= addr_last);
 224              ++bank, ++info) {
 225                 ulong b_end;
 226                 int sect;
 227                 short s_end;
 228
 229                 if (info->flash_id == FLASH_UNKNOWN) {
 230                         continue;
 231                 }
 232
 233                 b_end = info->start[0] + info->size - 1;        /* bank end addr */
 234                 s_end = info->sector_count - 1;                 /* last sector   */
 235
 236
 237                 for (sect=0; sect < info->sector_count; ++sect) {
 238                         ulong end;      /* last address in current sect */
 239
 240                         end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
 241
 242                         if (addr_first > end)
 243                                 continue;
 244                         if (addr_last < info->start[sect])
 245                                 continue;
 246
 247                         if (addr_first == info->start[sect]) {
 248                                 s_first[bank] = sect;
 249                         }
 250                         if (addr_last  == end) {
 251                                 s_last[bank]  = sect;
 252                         }
 253                 }
 254                 if (s_first[bank] >= 0) {
 255                         if (s_last[bank] < 0) {
 256                                 if (addr_last > b_end) {
 257                                         s_last[bank] = s_end;
 258                                 } else {
 259                                         puts ("Error: end address"
 260                                                 " not on sector boundary\n");
 261                                         rcode = 1;
 262                                         break;
 263                                 }
 264                         }
 265                         if (s_last[bank] < s_first[bank]) {
 266                                 puts ("Error: end sector"
 267                                         " precedes start sector\n");
 268                                 rcode = 1;
 269                                 break;
 270                         }
 271                         sect = s_last[bank];
 272                         addr_first = (sect == s_end) ? b_end + 1: info->start[sect + 1];
 273                         (*s_count) += s_last[bank] - s_first[bank] + 1;
 274                 } else if (addr_first >= info->start[0] && addr_first < b_end) {
 275                         puts ("Error: start address not on sector boundary\n");
 276                         rcode = 1;
 277                         break;
 278                 } else if (s_last[bank] >= 0) {
 279                         puts ("Error: cannot span across banks when they are"
 280                                " mapped in reverse order\n");
 281                         rcode = 1;
 282                         break;
 283                 }
 284         }
 285
 286         return rcode;
 287 }
 288 #endif /* CONFIG_SYS_NO_FLASH */
 289
 290 int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 291 {
 292 #ifndef CONFIG_SYS_NO_FLASH
 293         ulong bank;
 294 #endif
 295
 296 #ifdef CONFIG_HAS_DATAFLASH
 297         dataflash_print_info();
 298 #endif
 299
 300 #ifndef CONFIG_SYS_NO_FLASH
 301         if (argc == 1) {        /* print info for all FLASH banks */
 302                 for (bank=0; bank <CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
 303                         printf ("\nBank # %ld: ", bank+1);
 304
 305                         flash_print_info (&flash_info[bank]);
 306                 }
 307                 return 0;
 308         }
 309
 310         bank = simple_strtoul(argv[1], NULL, 16);
 311         if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) {
 312                 printf ("Only FLASH Banks # 1 ... # %d supported\n",
 313                         CONFIG_SYS_MAX_FLASH_BANKS);
 314                 return 1;
 315         }
 316         printf ("\nBank # %ld: ", bank);
 317         flash_print_info (&flash_info[bank-1]);
 318 #endif /* CONFIG_SYS_NO_FLASH */
 319         return 0;
 320 }
 321
 322 int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 323 {
 324 #ifndef CONFIG_SYS_NO_FLASH
 325         flash_info_t *info;
 326         ulong bank, addr_first, addr_last;
 327         int n, sect_first, sect_last;
 328 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
 329         struct mtd_device *dev;
 330         struct part_info *part;
 331         u8 dev_type, dev_num, pnum;
 332 #endif
 333         int rcode = 0;
 334
 335         if (argc < 2) {
 336                 cmd_usage(cmdtp);
 337                 return 1;
 338         }
 339
 340         if (strcmp(argv[1], "all") == 0) {
 341                 for (bank=1; bank<=CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
 342                         printf ("Erase Flash Bank # %ld ", bank);
 343                         info = &flash_info[bank-1];
 344                         rcode = flash_erase (info, 0, info->sector_count-1);
 345                 }
 346                 return rcode;
 347         }
 348
 349         if ((n = abbrev_spec(argv[1], &info, &sect_first, &sect_last)) != 0) {
 350                 if (n < 0) {
 351                         puts ("Bad sector specification\n");
 352                         return 1;
 353                 }
 354                 printf ("Erase Flash Sectors %d-%d in Bank # %zu ",
 355                         sect_first, sect_last, (info-flash_info)+1);
 356                 rcode = flash_erase(info, sect_first, sect_last);
 357                 return rcode;
 358         }
 359
 360 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
 361         /* erase <part-id> - erase partition */
 362         if ((argc == 2) && (mtd_id_parse(argv[1], NULL, &dev_type, &dev_num) == 0)) {
 363                 mtdparts_init();
 364                 if (find_dev_and_part(argv[1], &dev, &pnum, &part) == 0) {
 365                         if (dev->id->type == MTD_DEV_TYPE_NOR) {
 366                                 bank = dev->id->num;
 367                                 info = &flash_info[bank];
 368                                 addr_first = part->offset + info->start[0];
 369                                 addr_last = addr_first + part->size - 1;
 370
 371                                 printf ("Erase Flash Parition %s, "
 372                                                 "bank %ld, 0x%08lx - 0x%08lx ",
 373                                                 argv[1], bank, addr_first,
 374                                                 addr_last);
 375
 376                                 rcode = flash_sect_erase(addr_first, addr_last);
 377                                 return rcode;
 378                         }
 379
 380                         printf("cannot erase, not a NOR device\n");
 381                         return 1;
 382                 }
 383         }
 384 #endif
 385
 386         if (argc != 3) {
 387                 cmd_usage(cmdtp);
 388                 return 1;
 389         }
 390
 391         if (strcmp(argv[1], "bank") == 0) {
 392                 bank = simple_strtoul(argv[2], NULL, 16);
 393                 if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) {
 394                         printf ("Only FLASH Banks # 1 ... # %d supported\n",
 395                                 CONFIG_SYS_MAX_FLASH_BANKS);
 396                         return 1;
 397                 }
 398                 printf ("Erase Flash Bank # %ld ", bank);
 399                 info = &flash_info[bank-1];
 400                 rcode = flash_erase (info, 0, info->sector_count-1);
 401                 return rcode;
 402         }
 403
 404         if (addr_spec(argv[1], argv[2], &addr_first, &addr_last) < 0){
 405                 printf ("Bad address format\n");
 406                 return 1;
 407         }
 408
 409         if (addr_first >= addr_last) {
 410                 cmd_usage(cmdtp);
 411                 return 1;
 412         }
 413
 414         rcode = flash_sect_erase(addr_first, addr_last);
 415         return rcode;
 416 #else
 417         return 0;
 418 #endif /* CONFIG_SYS_NO_FLASH */
 419 }
 420
 421 #ifndef CONFIG_SYS_NO_FLASH
 422 int flash_sect_erase (ulong addr_first, ulong addr_last)
 423 {
 424         flash_info_t *info;
 425         ulong bank;
 426 #ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
 427         int s_first[CONFIG_SYS_MAX_FLASH_BANKS_DETECT], s_last[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
 428 #else
 429         int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_FLASH_BANKS];
 430 #endif
 431         int erased = 0;
 432         int planned;
 433         int rcode = 0;
 434
 435         rcode = flash_fill_sect_ranges (addr_first, addr_last,
 436                                         s_first, s_last, &planned );
 437
 438         if (planned && (rcode == 0)) {
 439                 for (bank=0,info = &flash_info[0];
 440                      (bank < CONFIG_SYS_MAX_FLASH_BANKS) && (rcode == 0);
 441                      ++bank, ++info) {
 442                         if (s_first[bank]>=0) {
 443                                 erased += s_last[bank] - s_first[bank] + 1;
 444                                 debug ("Erase Flash from 0x%08lx to 0x%08lx "
 445                                         "in Bank # %ld ",
 446                                         info->start[s_first[bank]],
 447                                         (s_last[bank] == info->sector_count) ?
 448                                                 info->start[0] + info->size - 1:
 449                                                 info->start[s_last[bank]+1] - 1,
 450                                         bank+1);
 451                                 rcode = flash_erase (info, s_first[bank], s_last[bank]);
 452                         }
 453                 }
 454                 printf ("Erased %d sectors\n", erased);
 455         } else if (rcode == 0) {
 456                 puts ("Error: start and/or end address"
 457                         " not on sector boundary\n");
 458                 rcode = 1;
 459         }
 460         return rcode;
 461 }
 462 #endif /* CONFIG_SYS_NO_FLASH */
 463
 464 int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 465 {
 466 #ifndef CONFIG_SYS_NO_FLASH
 467         flash_info_t *info;
 468         ulong bank;
 469         int i, n, sect_first, sect_last;
 470 #endif /* CONFIG_SYS_NO_FLASH */
 471         ulong addr_first, addr_last;
 472         int p;
 473 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
 474         struct mtd_device *dev;
 475         struct part_info *part;
 476         u8 dev_type, dev_num, pnum;
 477 #endif
 478         int rcode = 0;
 479 #ifdef CONFIG_HAS_DATAFLASH
 480         int status;
 481 #endif
 482
 483         if (argc < 3) {
 484                 cmd_usage(cmdtp);
 485                 return 1;
 486         }
 487
 488         if (strcmp(argv[1], "off") == 0) {
 489                 p = 0;
 490         } else if (strcmp(argv[1], "on") == 0) {
 491                 p = 1;
 492         } else {
 493                 cmd_usage(cmdtp);
 494                 return 1;
 495         }
 496
 497 #ifdef CONFIG_HAS_DATAFLASH
 498         if ((strcmp(argv[2], "all") != 0) && (strcmp(argv[2], "bank") != 0)) {
 499                 addr_first = simple_strtoul(argv[2], NULL, 16);
 500                 addr_last  = simple_strtoul(argv[3], NULL, 16);
 501
 502                 if (addr_dataflash(addr_first) && addr_dataflash(addr_last)) {
 503                         status = dataflash_real_protect(p,addr_first,addr_last);
 504                         if (status < 0){
 505                                 puts ("Bad DataFlash sector specification\n");
 506                                 return 1;
 507                         }
 508                         printf("%sProtect %d DataFlash Sectors\n",
 509                                 p ? "" : "Un-", status);
 510                         return 0;
 511                 }
 512         }
 513 #endif
 514
 515 #ifndef CONFIG_SYS_NO_FLASH
 516         if (strcmp(argv[2], "all") == 0) {
 517                 for (bank=1; bank<=CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
 518                         info = &flash_info[bank-1];
 519                         if (info->flash_id == FLASH_UNKNOWN) {
 520                                 continue;
 521                         }
 522                         printf ("%sProtect Flash Bank # %ld\n",
 523                                 p ? "" : "Un-", bank);
 524
 525                         for (i=0; i<info->sector_count; ++i) {
 526 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 527                                 if (flash_real_protect(info, i, p))
 528                                         rcode = 1;
 529                                 putc ('.');
 530 #else
 531                                 info->protect[i] = p;
 532 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 533                         }
 534 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 535                         if (!rcode) puts (" done\n");
 536 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 537                 }
 538                 return rcode;
 539         }
 540
 541         if ((n = abbrev_spec(argv[2], &info, &sect_first, &sect_last)) != 0) {
 542                 if (n < 0) {
 543                         puts ("Bad sector specification\n");
 544                         return 1;
 545                 }
 546                 printf("%sProtect Flash Sectors %d-%d in Bank # %zu\n",
 547                         p ? "" : "Un-", sect_first, sect_last,
 548                         (info-flash_info)+1);
 549                 for (i = sect_first; i <= sect_last; i++) {
 550 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 551                         if (flash_real_protect(info, i, p))
 552                                 rcode =  1;
 553                         putc ('.');
 554 #else
 555                         info->protect[i] = p;
 556 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 557                 }
 558
 559 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 560                 if (!rcode) puts (" done\n");
 561 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 562
 563                 return rcode;
 564         }
 565
 566 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
 567         /* protect on/off <part-id> */
 568         if ((argc == 3) && (mtd_id_parse(argv[2], NULL, &dev_type, &dev_num) == 0)) {
 569                 mtdparts_init();
 570                 if (find_dev_and_part(argv[2], &dev, &pnum, &part) == 0) {
 571                         if (dev->id->type == MTD_DEV_TYPE_NOR) {
 572                                 bank = dev->id->num;
 573                                 info = &flash_info[bank];
 574                                 addr_first = part->offset + info->start[0];
 575                                 addr_last = addr_first + part->size - 1;
 576
 577                                 printf ("%sProtect Flash Parition %s, "
 578                                                 "bank %ld, 0x%08lx - 0x%08lx\n",
 579                                                 p ? "" : "Un", argv[1],
 580                                                 bank, addr_first, addr_last);
 581
 582                                 rcode = flash_sect_protect (p, addr_first, addr_last);
 583                                 return rcode;
 584                         }
 585
 586                         printf("cannot %sprotect, not a NOR device\n",
 587                                         p ? "" : "un");
 588                         return 1;
 589                 }
 590         }
 591 #endif
 592
 593         if (argc != 4) {
 594                 cmd_usage(cmdtp);
 595                 return 1;
 596         }
 597
 598         if (strcmp(argv[2], "bank") == 0) {
 599                 bank = simple_strtoul(argv[3], NULL, 16);
 600                 if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) {
 601                         printf ("Only FLASH Banks # 1 ... # %d supported\n",
 602                                 CONFIG_SYS_MAX_FLASH_BANKS);
 603                         return 1;
 604                 }
 605                 printf ("%sProtect Flash Bank # %ld\n",
 606                         p ? "" : "Un-", bank);
 607                 info = &flash_info[bank-1];
 608
 609                 if (info->flash_id == FLASH_UNKNOWN) {
 610                         puts ("missing or unknown FLASH type\n");
 611                         return 1;
 612                 }
 613                 for (i=0; i<info->sector_count; ++i) {
 614 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 615                         if (flash_real_protect(info, i, p))
 616                                 rcode =  1;
 617                         putc ('.');
 618 #else
 619                         info->protect[i] = p;
 620 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 621                 }
 622
 623 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 624                 if (!rcode) puts (" done\n");
 625 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 626
 627                 return rcode;
 628         }
 629
 630         if (addr_spec(argv[2], argv[3], &addr_first, &addr_last) < 0){
 631                 printf("Bad address format\n");
 632                 return 1;
 633         }
 634
 635         if (addr_first >= addr_last) {
 636                 cmd_usage(cmdtp);
 637                 return 1;
 638         }
 639         rcode = flash_sect_protect (p, addr_first, addr_last);
 640 #endif /* CONFIG_SYS_NO_FLASH */
 641         return rcode;
 642 }
 643
 644 #ifndef CONFIG_SYS_NO_FLASH
 645 int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
 646 {
 647         flash_info_t *info;
 648         ulong bank;
 649 #ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
 650         int s_first[CONFIG_SYS_MAX_FLASH_BANKS_DETECT], s_last[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
 651 #else
 652         int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_FLASH_BANKS];
 653 #endif
 654         int protected, i;
 655         int planned;
 656         int rcode;
 657
 658         rcode = flash_fill_sect_ranges( addr_first, addr_last, s_first, s_last, &planned );
 659
 660         protected = 0;
 661
 662         if (planned && (rcode == 0)) {
 663                 for (bank=0,info = &flash_info[0]; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank, ++info) {
 664                         if (info->flash_id == FLASH_UNKNOWN) {
 665                                 continue;
 666                         }
 667
 668                         if (s_first[bank]>=0 && s_first[bank]<=s_last[bank]) {
 669                                 debug ("%sProtecting sectors %d..%d in bank %ld\n",
 670                                         p ? "" : "Un-",
 671                                         s_first[bank], s_last[bank], bank+1);
 672                                 protected += s_last[bank] - s_first[bank] + 1;
 673                                 for (i=s_first[bank]; i<=s_last[bank]; ++i) {
 674 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 675                                         if (flash_real_protect(info, i, p))
 676                                                 rcode = 1;
 677                                         putc ('.');
 678 #else
 679                                         info->protect[i] = p;
 680 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 681                                 }
 682                         }
 683                 }
 684 #if defined(CONFIG_SYS_FLASH_PROTECTION)
 685                 puts (" done\n");
 686 #endif  /* CONFIG_SYS_FLASH_PROTECTION */
 687
 688                 printf ("%sProtected %d sectors\n",
 689                         p ? "" : "Un-", protected);
 690         } else if (rcode == 0) {
 691                 puts ("Error: start and/or end address"
 692                         " not on sector boundary\n");
 693                 rcode = 1;
 694         }
 695         return rcode;
 696 }
 697 #endif /* CONFIG_SYS_NO_FLASH */
 698
 699
 700 /**************************************************/
 701 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_CMD_MTDPARTS)
 702 # define TMP_ERASE      "erase <part-id>\n    - erase partition\n"
 703 # define TMP_PROT_ON    "protect on <part-id>\n    - protect partition\n"
 704 # define TMP_PROT_OFF   "protect off <part-id>\n    - make partition writable\n"
 705 #else
 706 # define TMP_ERASE      /* empty */
 707 # define TMP_PROT_ON    /* empty */
 708 # define TMP_PROT_OFF   /* empty */
 709 #endif
 710
 711 U_BOOT_CMD(
 712         flinfo,    2,    1,    do_flinfo,
 713         "print FLASH memory information",
 714         "\n    - print information for all FLASH memory banks\n"
 715         "flinfo N\n    - print information for FLASH memory bank # N\n"
 716 );
 717
 718 U_BOOT_CMD(
 719         erase,   3,   0,  do_flerase,
 720         "erase FLASH memory",
 721         "start end\n"
 722         "    - erase FLASH from addr 'start' to addr 'end'\n"
 723         "erase start +len\n"
 724         "    - erase FLASH from addr 'start' to the end of sect "
 725         "w/addr 'start'+'len'-1\n"
 726         "erase N:SF[-SL]\n    - erase sectors SF-SL in FLASH bank # N\n"
 727         "erase bank N\n    - erase FLASH bank # N\n"
 728         TMP_ERASE
 729         "erase all\n    - erase all FLASH banks\n"
 730 );
 731
 732 U_BOOT_CMD(
 733         protect,  4,  0,   do_protect,
 734         "enable or disable FLASH write protection",
 735         "on  start end\n"
 736         "    - protect FLASH from addr 'start' to addr 'end'\n"
 737         "protect on start +len\n"
 738         "    - protect FLASH from addr 'start' to end of sect "
 739         "w/addr 'start'+'len'-1\n"
 740         "protect on  N:SF[-SL]\n"
 741         "    - protect sectors SF-SL in FLASH bank # N\n"
 742         "protect on  bank N\n    - protect FLASH bank # N\n"
 743         TMP_PROT_ON
 744         "protect on  all\n    - protect all FLASH banks\n"
 745         "protect off start end\n"
 746         "    - make FLASH from addr 'start' to addr 'end' writable\n"
 747         "protect off start +len\n"
 748         "    - make FLASH from addr 'start' to end of sect "
 749         "w/addr 'start'+'len'-1 wrtable\n"
 750         "protect off N:SF[-SL]\n"
 751         "    - make sectors SF-SL writable in FLASH bank # N\n"
 752         "protect off bank N\n    - make FLASH bank # N writable\n"
 753         TMP_PROT_OFF
 754         "protect off all\n    - make all FLASH banks writable\n"
 755 );
 756
 757 #undef  TMP_ERASE
 758 #undef  TMP_PROT_ON
 759 #undef  TMP_PROT_OFF