board/prodrive/common/flash.c

   1 /*
   2  * (C) Copyright 2006
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/processor.h>
  10
  11 flash_info_t    flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
  12
  13 /*
  14  * Functions
  15  */
  16 static int write_word(flash_info_t *info, ulong dest, ulong data);
  17
  18 void flash_print_info(flash_info_t *info)
  19 {
  20         int i;
  21         int k;
  22         int size;
  23         int erased;
  24         volatile unsigned long *flash;
  25
  26         if (info->flash_id == FLASH_UNKNOWN) {
  27                 printf ("missing or unknown FLASH type\n");
  28                 return;
  29         }
  30
  31         switch (info->flash_id & FLASH_VENDMASK) {
  32         case FLASH_MAN_AMD:     printf ("AMD ");                break;
  33         case FLASH_MAN_FUJ:     printf ("FUJITSU ");            break;
  34         case FLASH_MAN_SST:     printf ("SST ");                break;
  35         case FLASH_MAN_STM:     printf ("ST ");                 break;
  36         case FLASH_MAN_EXCEL:   printf ("Excel Semiconductor "); break;
  37         default:                printf ("Unknown Vendor ");     break;
  38         }
  39
  40         switch (info->flash_id & FLASH_TYPEMASK) {
  41         case FLASH_AM400B:      printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
  42                 break;
  43         case FLASH_AM400T:      printf ("AM29LV400T (4 Mbit, top boot sector)\n");
  44                 break;
  45         case FLASH_AM800B:      printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
  46                 break;
  47         case FLASH_AM800T:      printf ("AM29LV800T (8 Mbit, top boot sector)\n");
  48                 break;
  49         case FLASH_AM160B:      printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
  50                 break;
  51         case FLASH_AM160T:      printf ("AM29LV160T (16 Mbit, top boot sector)\n");
  52                 break;
  53         case FLASH_AM320T:      printf ("AM29LV320T (32 M, top sector)\n");
  54                 break;
  55         case FLASH_AM320B:      printf ("AM29LV320B (32 M, bottom sector)\n");
  56                 break;
  57         case FLASH_AMDL322T:    printf ("AM29DL322T (32 M, top sector)\n");
  58                 break;
  59         case FLASH_AMDL322B:    printf ("AM29DL322B (32 M, bottom sector)\n");
  60                 break;
  61         case FLASH_AMDL323T:    printf ("AM29DL323T (32 M, top sector)\n");
  62                 break;
  63         case FLASH_AMDL323B:    printf ("AM29DL323B (32 M, bottom sector)\n");
  64                 break;
  65         case FLASH_SST020:      printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
  66                 break;
  67         case FLASH_SST040:      printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
  68                 break;
  69         default:                printf ("Unknown Chip Type\n");
  70                 break;
  71         }
  72
  73         printf ("  Size: %ld MB in %d Sectors\n",
  74                 info->size >> 20, info->sector_count);
  75
  76         printf ("  Sector Start Addresses:");
  77         for (i=0; i<info->sector_count; ++i) {
  78 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
  79                 /*
  80                  * Check if whole sector is erased
  81                  */
  82                 if (i != (info->sector_count-1))
  83                         size = info->start[i+1] - info->start[i];
  84                 else
  85                         size = info->start[0] + info->size - info->start[i];
  86                 erased = 1;
  87                 flash = (volatile unsigned long *)info->start[i];
  88                 size = size >> 2;        /* divide by 4 for longword access */
  89                 for (k=0; k<size; k++) {
  90                         if (*flash++ != 0xffffffff) {
  91                                 erased = 0;
  92                                 break;
  93                         }
  94                 }
  95
  96                 if ((i % 5) == 0)
  97                         printf ("\n   ");
  98                 /* print empty and read-only info */
  99                 printf (" %08lX%s%s",
 100                         info->start[i],
 101                         erased ? " E" : "  ",
 102                         info->protect[i] ? "RO " : "   ");
 103 #else
 104                 if ((i % 5) == 0)
 105                         printf ("\n   ");
 106                 printf (" %08lX%s",
 107                         info->start[i],
 108                         info->protect[i] ? " (RO)" : "     ");
 109 #endif
 110
 111         }
 112         printf ("\n");
 113         return;
 114 }
 115
 116 /*
 117  * The following code cannot be run from FLASH!
 118  */
 119 static ulong flash_get_size(vu_long *addr, flash_info_t *info)
 120 {
 121         short i;
 122         short n;
 123         CONFIG_SYS_FLASH_WORD_SIZE value;
 124         ulong base = (ulong)addr;
 125         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)addr;
 126
 127         /* Write auto select command: read Manufacturer ID */
 128         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 129         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 130         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
 131
 132         value = addr2[CONFIG_SYS_FLASH_READ0];
 133
 134         switch (value) {
 135         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
 136                 info->flash_id = FLASH_MAN_AMD;
 137                 break;
 138         case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
 139                 info->flash_id = FLASH_MAN_FUJ;
 140                 break;
 141         case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
 142                 info->flash_id = FLASH_MAN_SST;
 143                 break;
 144         case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
 145                 info->flash_id = FLASH_MAN_STM;
 146                 break;
 147         case (CONFIG_SYS_FLASH_WORD_SIZE)EXCEL_MANUFACT:
 148                 info->flash_id = FLASH_MAN_EXCEL;
 149                 break;
 150         default:
 151                 info->flash_id = FLASH_UNKNOWN;
 152                 info->sector_count = 0;
 153                 info->size = 0;
 154                 return (0);                     /* no or unknown flash  */
 155         }
 156
 157         value = addr2[CONFIG_SYS_FLASH_READ1];          /* device ID            */
 158
 159         switch (value) {
 160         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
 161                 info->flash_id += FLASH_AM400T;
 162                 info->sector_count = 11;
 163                 info->size = 0x00080000;
 164                 break;                          /* => 0.5 MB            */
 165
 166         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
 167                 info->flash_id += FLASH_AM400B;
 168                 info->sector_count = 11;
 169                 info->size = 0x00080000;
 170                 break;                          /* => 0.5 MB            */
 171
 172         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
 173                 info->flash_id += FLASH_AM800T;
 174                 info->sector_count = 19;
 175                 info->size = 0x00100000;
 176                 break;                          /* => 1 MB              */
 177
 178         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
 179                 info->flash_id += FLASH_AM800B;
 180                 info->sector_count = 19;
 181                 info->size = 0x00100000;
 182                 break;                          /* => 1 MB              */
 183
 184         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
 185                 info->flash_id += FLASH_AM160T;
 186                 info->sector_count = 35;
 187                 info->size = 0x00200000;
 188                 break;                          /* => 2 MB              */
 189
 190         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
 191                 info->flash_id += FLASH_AM160B;
 192                 info->sector_count = 35;
 193                 info->size = 0x00200000;
 194                 break;                          /* => 2 MB              */
 195
 196         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 197                 info->flash_id += FLASH_AM320T;
 198                 info->sector_count = 71;
 199                 info->size = 0x00400000;  break;        /* => 4 MB      */
 200
 201         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 202                 info->flash_id += FLASH_AM320B;
 203                 info->sector_count = 71;
 204                 info->size = 0x00400000;  break;        /* => 4 MB      */
 205
 206         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
 207                 info->flash_id += FLASH_AMDL322T;
 208                 info->sector_count = 71;
 209                 info->size = 0x00400000;  break;        /* => 4 MB      */
 210
 211         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
 212                 info->flash_id += FLASH_AMDL322B;
 213                 info->sector_count = 71;
 214                 info->size = 0x00400000;  break;        /* => 4 MB      */
 215
 216         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
 217                 info->flash_id += FLASH_AMDL323T;
 218                 info->sector_count = 71;
 219                 info->size = 0x00400000;  break;        /* => 4 MB      */
 220
 221         case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
 222                 info->flash_id += FLASH_AMDL323B;
 223                 info->sector_count = 71;
 224                 info->size = 0x00400000;  break;        /* => 4 MB      */
 225
 226         case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
 227                 info->flash_id += FLASH_SST020;
 228                 info->sector_count = 64;
 229                 info->size = 0x00040000;
 230                 break;                          /* => 256 kB            */
 231
 232         case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
 233                 info->flash_id += FLASH_SST040;
 234                 info->sector_count = 128;
 235                 info->size = 0x00080000;
 236                 break;                          /* => 512 kB            */
 237
 238         default:
 239                 info->flash_id = FLASH_UNKNOWN;
 240                 return (0);                     /* => no or unknown flash */
 241
 242         }
 243
 244         /* set up sector start address table */
 245         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 246                 for (i = 0; i < info->sector_count; i++)
 247                         info->start[i] = base + (i * 0x00001000);
 248         } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
 249                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
 250                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 251                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
 252                 /* set sector offsets for bottom boot block type        */
 253                 for (i=0; i<8; ++i) {           /*  8 x 8k boot sectors */
 254                         info->start[i] = base;
 255                         base += 8 << 10;
 256                 }
 257                 while (i < info->sector_count) {        /* 64k regular sectors  */
 258                         info->start[i] = base;
 259                         base += 64 << 10;
 260                         ++i;
 261                 }
 262         } else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
 263                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
 264                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 265                    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
 266                 /* set sector offsets for top boot block type           */
 267                 base += info->size;
 268                 i = info->sector_count;
 269                 for (n=0; n<8; ++n) {           /*  8 x 8k boot sectors */
 270                         base -= 8 << 10;
 271                         --i;
 272                         info->start[i] = base;
 273                 }
 274                 while (i > 0) {                 /* 64k regular sectors  */
 275                         base -= 64 << 10;
 276                         --i;
 277                         info->start[i] = base;
 278                 }
 279         } else {
 280                 if (info->flash_id & FLASH_BTYPE) {
 281                         /* set sector offsets for bottom boot block type        */
 282                         info->start[0] = base + 0x00000000;
 283                         info->start[1] = base + 0x00004000;
 284                         info->start[2] = base + 0x00006000;
 285                         info->start[3] = base + 0x00008000;
 286                         for (i = 4; i < info->sector_count; i++) {
 287                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
 288                         }
 289                 } else {
 290                         /* set sector offsets for top boot block type           */
 291                         i = info->sector_count - 1;
 292                         info->start[i--] = base + info->size - 0x00004000;
 293                         info->start[i--] = base + info->size - 0x00006000;
 294                         info->start[i--] = base + info->size - 0x00008000;
 295                         for (; i >= 0; i--) {
 296                                 info->start[i] = base + i * 0x00010000;
 297                         }
 298                 }
 299         }
 300
 301         /* check for protected sectors */
 302         for (i = 0; i < info->sector_count; i++) {
 303                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 304                 /* D0 = 1 if protected */
 305                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 306                 if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
 307                         info->protect[i] = 0;
 308                 else
 309                         info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
 310         }
 311
 312         /*
 313          * Prevent writes to uninitialized FLASH.
 314          */
 315         if (info->flash_id != FLASH_UNKNOWN) {
 316                 addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
 317                 *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0;        /* reset bank */
 318         }
 319
 320         return (info->size);
 321 }
 322
 323
 324 int flash_erase(flash_info_t *info, int s_first, int s_last)
 325 {
 326         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 327         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 328         int flag, prot, sect, l_sect;
 329         ulong start, now, last;
 330
 331         if ((s_first < 0) || (s_first > s_last)) {
 332                 if (info->flash_id == FLASH_UNKNOWN)
 333                         printf ("- missing\n");
 334                 else
 335                         printf ("- no sectors to erase\n");
 336                 return 1;
 337         }
 338
 339         if (info->flash_id == FLASH_UNKNOWN) {
 340                 printf ("Can't erase unknown flash type - aborted\n");
 341                 return 1;
 342         }
 343
 344         prot = 0;
 345         for (sect=s_first; sect<=s_last; ++sect)
 346                 if (info->protect[sect])
 347                         prot++;
 348
 349         if (prot)
 350                 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
 351         else
 352                 printf ("\n");
 353
 354         l_sect = -1;
 355
 356         /* Disable interrupts which might cause a timeout here */
 357         flag = disable_interrupts();
 358
 359         /* Start erase on unprotected sectors */
 360         for (sect = s_first; sect<=s_last; sect++) {
 361                 if (info->protect[sect] == 0) { /* not protected */
 362                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
 363                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 364                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 365                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 366                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
 367                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 368                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 369                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030;  /* sector erase */
 370
 371                                 /* re-enable interrupts if necessary */
 372                                 if (flag) {
 373                                         enable_interrupts();
 374                                         flag = 0;
 375                                 }
 376
 377                                 /* data polling for D7 */
 378                                 start = get_timer (0);
 379                                 while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
 380                                        (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
 381                                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 382                                                 return (1);
 383                                 }
 384                         } else {
 385                                 if (sect == s_first) {
 386                                         addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 387                                         addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 388                                         addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
 389                                         addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 390                                         addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 391                                 }
 392                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030;  /* sector erase */
 393                         }
 394                         l_sect = sect;
 395                 }
 396         }
 397
 398         /* re-enable interrupts if necessary */
 399         if (flag)
 400                 enable_interrupts();
 401
 402         /* wait at least 80us - let's wait 1 ms */
 403         udelay (1000);
 404
 405         /*
 406          * We wait for the last triggered sector
 407          */
 408         if (l_sect < 0)
 409                 goto DONE;
 410
 411         start = get_timer (0);
 412         last  = start;
 413         addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
 414         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
 415                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 416                         printf ("Timeout\n");
 417                         return 1;
 418                 }
 419                 /* show that we're waiting */
 420                 if ((now - last) > 1000) {      /* every second */
 421                         putc ('.');
 422                         last = now;
 423                 }
 424         }
 425
 426 DONE:
 427         /* reset to read mode */
 428         addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
 429         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0;       /* reset bank */
 430
 431         printf (" done\n");
 432         return 0;
 433 }
 434
 435 /*
 436  * Copy memory to flash, returns:
 437  * 0 - OK
 438  * 1 - write timeout
 439  * 2 - Flash not erased
 440  */
 441 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 442 {
 443         ulong cp, wp, data;
 444         int i, l, rc;
 445
 446         wp = (addr & ~3);       /* get lower word aligned address */
 447
 448         /*
 449          * handle unaligned start bytes
 450          */
 451         if ((l = addr - wp) != 0) {
 452                 data = 0;
 453                 for (i=0, cp=wp; i<l; ++i, ++cp) {
 454                         data = (data << 8) | (*(uchar *)cp);
 455                 }
 456                 for (; i<4 && cnt>0; ++i) {
 457                         data = (data << 8) | *src++;
 458                         --cnt;
 459                         ++cp;
 460                 }
 461                 for (; cnt==0 && i<4; ++i, ++cp) {
 462                         data = (data << 8) | (*(uchar *)cp);
 463                 }
 464
 465                 if ((rc = write_word(info, wp, data)) != 0) {
 466                         return (rc);
 467                 }
 468                 wp += 4;
 469         }
 470
 471         /*
 472          * handle word aligned part
 473          */
 474         while (cnt >= 4) {
 475                 data = 0;
 476                 for (i=0; i<4; ++i)
 477                         data = (data << 8) | *src++;
 478                 if ((rc = write_word(info, wp, data)) != 0)
 479                         return (rc);
 480                 wp  += 4;
 481                 cnt -= 4;
 482         }
 483
 484         if (cnt == 0)
 485                 return (0);
 486
 487         /*
 488          * handle unaligned tail bytes
 489          */
 490         data = 0;
 491         for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
 492                 data = (data << 8) | *src++;
 493                 --cnt;
 494         }
 495         for (; i<4; ++i, ++cp)
 496                 data = (data << 8) | (*(uchar *)cp);
 497
 498         return (write_word(info, wp, data));
 499 }
 500
 501 /*
 502  * Write a word to Flash, returns:
 503  * 0 - OK
 504  * 1 - write timeout
 505  * 2 - Flash not erased
 506  */
 507 static int write_word(flash_info_t *info, ulong dest, ulong data)
 508 {
 509         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 510         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 511         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)&data;
 512         ulong start;
 513         int flag;
 514         int i;
 515
 516         /* Check if Flash is (sufficiently) erased */
 517         if ((*((vu_long *)dest) & data) != data)
 518                 return (2);
 519
 520         /* Disable interrupts which might cause a timeout here */
 521         flag = disable_interrupts();
 522
 523         for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 524                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
 525                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
 526                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
 527
 528                 dest2[i] = data2[i];
 529
 530                 /* re-enable interrupts if necessary */
 531                 if (flag)
 532                         enable_interrupts();
 533
 534                 /* data polling for D7 */
 535                 start = get_timer (0);
 536                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
 537                        (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
 538                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 539                                 return (1);
 540                 }
 541         }
 542
 543         return (0);
 544 }