board/tb0229/flash.c

   1 /*
   2  * (C) Masami Komiya <mkomiya@sonare.it> 2004
   3  *
   4  * (C) Copyright 2001-2004
   5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <ppc4xx.h>
  28 #include <asm/processor.h>
  29
  30 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips        */
  31
  32
  33 #ifdef CONFIG_SYS_FLASH_16BIT
  34 #define FLASH_WORD_SIZE unsigned short
  35 #define FLASH_ID_MASK   0xFFFF
  36 #else
  37 #define FLASH_WORD_SIZE unsigned long
  38 #define FLASH_ID_MASK   0xFFFFFFFF
  39 #endif
  40
  41 /*-----------------------------------------------------------------------
  42  * Functions
  43  */
  44 /* stolen from esteem192e/flash.c */
  45 ulong flash_get_size (volatile FLASH_WORD_SIZE * addr, flash_info_t * info);
  46
  47 #ifndef CONFIG_SYS_FLASH_16BIT
  48 static int write_word (flash_info_t * info, ulong dest, ulong data);
  49 #else
  50 static int write_short (flash_info_t * info, ulong dest, ushort data);
  51 #endif
  52 static void flash_get_offsets (ulong base, flash_info_t * info);
  53
  54
  55 /*-----------------------------------------------------------------------
  56  */
  57
  58 unsigned long flash_init (void)
  59 {
  60         unsigned long size_b0, size_b1;
  61         int i;
  62         uint pbcr;
  63         unsigned long base_b0, base_b1;
  64
  65         /* Init: no FLASHes known */
  66         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  67                 flash_info[i].flash_id = FLASH_UNKNOWN;
  68         }
  69
  70         /* Static FLASH Bank configuration here - FIXME XXX */
  71
  72         size_b0 =
  73                 flash_get_size ((volatile FLASH_WORD_SIZE *) CONFIG_SYS_FLASH_BASE,
  74                                 &flash_info[0]);
  75
  76         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  77                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0 << 20);
  78         }
  79
  80         /* Only one bank */
  81         if (CONFIG_SYS_MAX_FLASH_BANKS == 1) {
  82                 /* Setup offsets */
  83                 flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
  84
  85                 /* Monitor protection ON by default */
  86 #if 0                           /* sand: */
  87                 (void) flash_protect (FLAG_PROTECT_SET,
  88                                       FLASH_BASE0_PRELIM - monitor_flash_len +
  89                                       size_b0,
  90                                       FLASH_BASE0_PRELIM - 1 + size_b0,
  91                                       &flash_info[0]);
  92 #else
  93                 (void) flash_protect (FLAG_PROTECT_SET,
  94                                       CONFIG_SYS_MONITOR_BASE,
  95                                       CONFIG_SYS_MONITOR_BASE + monitor_flash_len -
  96                                       1, &flash_info[0]);
  97 #endif
  98                 size_b1 = 0;
  99                 flash_info[0].size = size_b0;
 100         }
 101 #ifdef CONFIG_SYS_FLASH_BASE_2
 102         /* 2 banks */
 103         else {
 104                 size_b1 =
 105                         flash_get_size ((volatile FLASH_WORD_SIZE *)
 106                                         CONFIG_SYS_FLASH_BASE_2, &flash_info[1]);
 107
 108                 /* Re-do sizing to get full correct info */
 109
 110                 if (size_b1) {
 111                         mtdcr (ebccfga, pb0cr);
 112                         pbcr = mfdcr (ebccfgd);
 113                         mtdcr (ebccfga, pb0cr);
 114                         base_b1 = -size_b1;
 115                         pbcr = (pbcr & 0x0001ffff) | base_b1 |
 116                                 (((size_b1 / 1024 / 1024) - 1) << 17);
 117                         mtdcr (ebccfgd, pbcr);
 118                         /*          printf("pb1cr = %x\n", pbcr); */
 119                 }
 120
 121                 if (size_b0) {
 122                         mtdcr (ebccfga, pb1cr);
 123                         pbcr = mfdcr (ebccfgd);
 124                         mtdcr (ebccfga, pb1cr);
 125                         base_b0 = base_b1 - size_b0;
 126                         pbcr = (pbcr & 0x0001ffff) | base_b0 |
 127                                 (((size_b0 / 1024 / 1024) - 1) << 17);
 128                         mtdcr (ebccfgd, pbcr);
 129                         /*            printf("pb0cr = %x\n", pbcr); */
 130                 }
 131
 132                 size_b0 =
 133                         flash_get_size ((volatile FLASH_WORD_SIZE *) base_b0,
 134                                         &flash_info[0]);
 135
 136                 flash_get_offsets (base_b0, &flash_info[0]);
 137
 138                 /* monitor protection ON by default */
 139 #if 0                           /* sand: */
 140                 (void) flash_protect (FLAG_PROTECT_SET,
 141                                       FLASH_BASE0_PRELIM - monitor_flash_len +
 142                                       size_b0,
 143                                       FLASH_BASE0_PRELIM - 1 + size_b0,
 144                                       &flash_info[0]);
 145 #else
 146                 (void) flash_protect (FLAG_PROTECT_SET,
 147                                       CONFIG_SYS_MONITOR_BASE,
 148                                       CONFIG_SYS_MONITOR_BASE + monitor_flash_len -
 149                                       1, &flash_info[0]);
 150 #endif
 151
 152                 if (size_b1) {
 153                         /* Re-do sizing to get full correct info */
 154                         size_b1 =
 155                                 flash_get_size ((volatile FLASH_WORD_SIZE *)
 156                                                 base_b1, &flash_info[1]);
 157
 158                         flash_get_offsets (base_b1, &flash_info[1]);
 159
 160                         /* monitor protection ON by default */
 161                         (void) flash_protect (FLAG_PROTECT_SET,
 162                                               base_b1 + size_b1 -
 163                                               monitor_flash_len,
 164                                               base_b1 + size_b1 - 1,
 165                                               &flash_info[1]);
 166                         /* monitor protection OFF by default (one is enough) */
 167                         (void) flash_protect (FLAG_PROTECT_CLEAR,
 168                                               base_b0 + size_b0 -
 169                                               monitor_flash_len,
 170                                               base_b0 + size_b0 - 1,
 171                                               &flash_info[0]);
 172                 } else {
 173                         flash_info[1].flash_id = FLASH_UNKNOWN;
 174                         flash_info[1].sector_count = -1;
 175                 }
 176
 177                 flash_info[0].size = size_b0;
 178                 flash_info[1].size = size_b1;
 179         }                       /* else 2 banks */
 180 #endif
 181         return (size_b0 + size_b1);
 182 }
 183
 184
 185 /*-----------------------------------------------------------------------
 186  */
 187
 188 static void flash_get_offsets (ulong base, flash_info_t * info)
 189 {
 190         int i;
 191
 192         /* set up sector start adress table */
 193         if ((info->flash_id & FLASH_TYPEMASK) == FLASH_28F320J3A ||
 194             (info->flash_id & FLASH_TYPEMASK) == FLASH_28F640J3A ||
 195             (info->flash_id & FLASH_TYPEMASK) == FLASH_28F128J3A) {
 196                 for (i = 0; i < info->sector_count; i++) {
 197                         info->start[i] =
 198                                 base + (i * info->size / info->sector_count);
 199                 }
 200         } else if (info->flash_id & FLASH_BTYPE) {
 201                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 202
 203 #ifndef CONFIG_SYS_FLASH_16BIT
 204                         /* set sector offsets for bottom boot block type        */
 205                         info->start[0] = base + 0x00000000;
 206                         info->start[1] = base + 0x00004000;
 207                         info->start[2] = base + 0x00008000;
 208                         info->start[3] = base + 0x0000C000;
 209                         info->start[4] = base + 0x00010000;
 210                         info->start[5] = base + 0x00014000;
 211                         info->start[6] = base + 0x00018000;
 212                         info->start[7] = base + 0x0001C000;
 213                         for (i = 8; i < info->sector_count; i++) {
 214                                 info->start[i] =
 215                                         base + (i * 0x00020000) - 0x000E0000;
 216                         }
 217                 } else {
 218                         /* set sector offsets for bottom boot block type        */
 219                         info->start[0] = base + 0x00000000;
 220                         info->start[1] = base + 0x00008000;
 221                         info->start[2] = base + 0x0000C000;
 222                         info->start[3] = base + 0x00010000;
 223                         for (i = 4; i < info->sector_count; i++) {
 224                                 info->start[i] =
 225                                         base + (i * 0x00020000) - 0x00060000;
 226                         }
 227                 }
 228 #else
 229                         /* set sector offsets for bottom boot block type        */
 230                         info->start[0] = base + 0x00000000;
 231                         info->start[1] = base + 0x00002000;
 232                         info->start[2] = base + 0x00004000;
 233                         info->start[3] = base + 0x00006000;
 234                         info->start[4] = base + 0x00008000;
 235                         info->start[5] = base + 0x0000A000;
 236                         info->start[6] = base + 0x0000C000;
 237                         info->start[7] = base + 0x0000E000;
 238                         for (i = 8; i < info->sector_count; i++) {
 239                                 info->start[i] =
 240                                         base + (i * 0x00010000) - 0x00070000;
 241                         }
 242                 } else {
 243                         /* set sector offsets for bottom boot block type        */
 244                         info->start[0] = base + 0x00000000;
 245                         info->start[1] = base + 0x00004000;
 246                         info->start[2] = base + 0x00006000;
 247                         info->start[3] = base + 0x00008000;
 248                         for (i = 4; i < info->sector_count; i++) {
 249                                 info->start[i] =
 250                                         base + (i * 0x00010000) - 0x00030000;
 251                         }
 252                 }
 253 #endif
 254         } else {
 255                 /* set sector offsets for top boot block type           */
 256                 i = info->sector_count - 1;
 257                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 258
 259 #ifndef CONFIG_SYS_FLASH_16BIT
 260                         info->start[i--] = base + info->size - 0x00004000;
 261                         info->start[i--] = base + info->size - 0x00008000;
 262                         info->start[i--] = base + info->size - 0x0000C000;
 263                         info->start[i--] = base + info->size - 0x00010000;
 264                         info->start[i--] = base + info->size - 0x00014000;
 265                         info->start[i--] = base + info->size - 0x00018000;
 266                         info->start[i--] = base + info->size - 0x0001C000;
 267                         for (; i >= 0; i--) {
 268                                 info->start[i] = base + i * 0x00020000;
 269                         }
 270
 271                 } else {
 272
 273                         info->start[i--] = base + info->size - 0x00008000;
 274                         info->start[i--] = base + info->size - 0x0000C000;
 275                         info->start[i--] = base + info->size - 0x00010000;
 276                         for (; i >= 0; i--) {
 277                                 info->start[i] = base + i * 0x00020000;
 278                         }
 279                 }
 280 #else
 281                         info->start[i--] = base + info->size - 0x00002000;
 282                         info->start[i--] = base + info->size - 0x00004000;
 283                         info->start[i--] = base + info->size - 0x00006000;
 284                         info->start[i--] = base + info->size - 0x00008000;
 285                         info->start[i--] = base + info->size - 0x0000A000;
 286                         info->start[i--] = base + info->size - 0x0000C000;
 287                         info->start[i--] = base + info->size - 0x0000E000;
 288                         for (; i >= 0; i--) {
 289                                 info->start[i] = base + i * 0x00010000;
 290                         }
 291
 292                 } else {
 293
 294                         info->start[i--] = base + info->size - 0x00004000;
 295                         info->start[i--] = base + info->size - 0x00006000;
 296                         info->start[i--] = base + info->size - 0x00008000;
 297                         for (; i >= 0; i--) {
 298                                 info->start[i] = base + i * 0x00010000;
 299                         }
 300                 }
 301 #endif
 302         }
 303
 304
 305 }
 306
 307 /*-----------------------------------------------------------------------
 308  */
 309
 310 void flash_print_info (flash_info_t * info)
 311 {
 312         int i;
 313         uchar *boottype;
 314         uchar botboot[] = ", bottom boot sect)\n";
 315         uchar topboot[] = ", top boot sector)\n";
 316
 317         if (info->flash_id == FLASH_UNKNOWN) {
 318                 printf ("missing or unknown FLASH type\n");
 319                 return;
 320         }
 321
 322         switch (info->flash_id & FLASH_VENDMASK) {
 323         case FLASH_MAN_AMD:
 324                 printf ("AMD ");
 325                 break;
 326         case FLASH_MAN_FUJ:
 327                 printf ("FUJITSU ");
 328                 break;
 329         case FLASH_MAN_SST:
 330                 printf ("SST ");
 331                 break;
 332         case FLASH_MAN_STM:
 333                 printf ("STM ");
 334                 break;
 335         case FLASH_MAN_INTEL:
 336                 printf ("INTEL ");
 337                 break;
 338         default:
 339                 printf ("Unknown Vendor ");
 340                 break;
 341         }
 342
 343         if (info->flash_id & 0x0001) {
 344                 boottype = botboot;
 345         } else {
 346                 boottype = topboot;
 347         }
 348
 349         switch (info->flash_id & FLASH_TYPEMASK) {
 350         case FLASH_AM400B:
 351                 printf ("AM29LV400B (4 Mbit%s", boottype);
 352                 break;
 353         case FLASH_AM400T:
 354                 printf ("AM29LV400T (4 Mbit%s", boottype);
 355                 break;
 356         case FLASH_AM800B:
 357                 printf ("AM29LV800B (8 Mbit%s", boottype);
 358                 break;
 359         case FLASH_AM800T:
 360                 printf ("AM29LV800T (8 Mbit%s", boottype);
 361                 break;
 362         case FLASH_AM160B:
 363                 printf ("AM29LV160B (16 Mbit%s", boottype);
 364                 break;
 365         case FLASH_AM160T:
 366                 printf ("AM29LV160T (16 Mbit%s", boottype);
 367                 break;
 368         case FLASH_AM320B:
 369                 printf ("AM29LV320B (32 Mbit%s", boottype);
 370                 break;
 371         case FLASH_AM320T:
 372                 printf ("AM29LV320T (32 Mbit%s", boottype);
 373                 break;
 374         case FLASH_INTEL800B:
 375                 printf ("INTEL28F800B (8 Mbit%s", boottype);
 376                 break;
 377         case FLASH_INTEL800T:
 378                 printf ("INTEL28F800T (8 Mbit%s", boottype);
 379                 break;
 380         case FLASH_INTEL160B:
 381                 printf ("INTEL28F160B (16 Mbit%s", boottype);
 382                 break;
 383         case FLASH_INTEL160T:
 384                 printf ("INTEL28F160T (16 Mbit%s", boottype);
 385                 break;
 386         case FLASH_INTEL320B:
 387                 printf ("INTEL28F320B (32 Mbit%s", boottype);
 388                 break;
 389         case FLASH_INTEL320T:
 390                 printf ("INTEL28F320T (32 Mbit%s", boottype);
 391                 break;
 392
 393 #if 0                           /* enable when devices are available */
 394
 395         case FLASH_INTEL640B:
 396                 printf ("INTEL28F640B (64 Mbit%s", boottype);
 397                 break;
 398         case FLASH_INTEL640T:
 399                 printf ("INTEL28F640T (64 Mbit%s", boottype);
 400                 break;
 401 #endif
 402         case FLASH_28F320J3A:
 403                 printf ("INTEL28F320J3A (32 Mbit%s", boottype);
 404                 break;
 405         case FLASH_28F640J3A:
 406                 printf ("INTEL28F640J3A (64 Mbit%s", boottype);
 407                 break;
 408         case FLASH_28F128J3A:
 409                 printf ("INTEL28F128J3A (128 Mbit%s", boottype);
 410                 break;
 411
 412         default:
 413                 printf ("Unknown Chip Type\n");
 414                 break;
 415         }
 416
 417         printf ("  Size: %ld MB in %d Sectors\n",
 418                 info->size >> 20, info->sector_count);
 419
 420         printf ("  Sector Start Addresses:");
 421         for (i = 0; i < info->sector_count; ++i) {
 422                 if ((i % 5) == 0)
 423                         printf ("\n   ");
 424                 printf (" %08lX%s",
 425                         info->start[i], info->protect[i] ? " (RO)" : "     ");
 426         }
 427         printf ("\n");
 428         return;
 429 }
 430
 431
 432 /*-----------------------------------------------------------------------
 433  */
 434
 435
 436 /*-----------------------------------------------------------------------
 437  */
 438
 439 /*
 440  * The following code cannot be run from FLASH!
 441  */
 442 ulong flash_get_size (volatile FLASH_WORD_SIZE * addr, flash_info_t * info)
 443 {
 444         short i;
 445         ulong base = (ulong) addr;
 446         FLASH_WORD_SIZE value;
 447
 448         /* Write auto select command: read Manufacturer ID */
 449
 450
 451 #ifndef CONFIG_SYS_FLASH_16BIT
 452
 453         /*
 454          * Note: if it is an AMD flash and the word at addr[0000]
 455          * is 0x00890089 this routine will think it is an Intel
 456          * flash device and may(most likely) cause trouble.
 457          */
 458
 459         addr[0x0000] = 0x00900090;
 460         if (addr[0x0000] != 0x00890089) {
 461                 addr[0x0555] = 0x00AA00AA;
 462                 addr[0x02AA] = 0x00550055;
 463                 addr[0x0555] = 0x00900090;
 464 #else
 465
 466         /*
 467          * Note: if it is an AMD flash and the word at addr[0000]
 468          * is 0x0089 this routine will think it is an Intel
 469          * flash device and may(most likely) cause trouble.
 470          */
 471
 472         addr[0x0000] = 0x0090;
 473
 474         if (addr[0x0000] != 0x0089) {
 475                 addr[0x0555] = 0x00AA;
 476                 addr[0x02AA] = 0x0055;
 477                 addr[0x0555] = 0x0090;
 478 #endif
 479         }
 480         value = addr[0];
 481
 482         switch (value) {
 483         case (AMD_MANUFACT & FLASH_ID_MASK):
 484                 info->flash_id = FLASH_MAN_AMD;
 485                 break;
 486         case (FUJ_MANUFACT & FLASH_ID_MASK):
 487                 info->flash_id = FLASH_MAN_FUJ;
 488                 break;
 489         case (STM_MANUFACT & FLASH_ID_MASK):
 490                 info->flash_id = FLASH_MAN_STM;
 491                 break;
 492         case (SST_MANUFACT & FLASH_ID_MASK):
 493                 info->flash_id = FLASH_MAN_SST;
 494                 break;
 495         case (INTEL_MANUFACT & FLASH_ID_MASK):
 496                 info->flash_id = FLASH_MAN_INTEL;
 497                 break;
 498         default:
 499                 info->flash_id = FLASH_UNKNOWN;
 500                 info->sector_count = 0;
 501                 info->size = 0;
 502                 return (0);     /* no or unknown flash  */
 503
 504         }
 505
 506         value = addr[1];        /* device ID            */
 507
 508         switch (value) {
 509
 510         case (AMD_ID_LV400T & FLASH_ID_MASK):
 511                 info->flash_id += FLASH_AM400T;
 512                 info->sector_count = 11;
 513                 info->size = 0x00100000;
 514                 break;          /* => 1 MB              */
 515
 516         case (AMD_ID_LV400B & FLASH_ID_MASK):
 517                 info->flash_id += FLASH_AM400B;
 518                 info->sector_count = 11;
 519                 info->size = 0x00100000;
 520                 break;          /* => 1 MB              */
 521
 522         case (AMD_ID_LV800T & FLASH_ID_MASK):
 523                 info->flash_id += FLASH_AM800T;
 524                 info->sector_count = 19;
 525                 info->size = 0x00200000;
 526                 break;          /* => 2 MB              */
 527
 528         case (AMD_ID_LV800B & FLASH_ID_MASK):
 529                 info->flash_id += FLASH_AM800B;
 530                 info->sector_count = 19;
 531                 info->size = 0x00200000;
 532                 break;          /* => 2 MB              */
 533
 534         case (AMD_ID_LV160T & FLASH_ID_MASK):
 535                 info->flash_id += FLASH_AM160T;
 536                 info->sector_count = 35;
 537                 info->size = 0x00400000;
 538                 break;          /* => 4 MB              */
 539
 540         case (AMD_ID_LV160B & FLASH_ID_MASK):
 541                 info->flash_id += FLASH_AM160B;
 542                 info->sector_count = 35;
 543                 info->size = 0x00400000;
 544                 break;          /* => 4 MB              */
 545 #if 0                           /* enable when device IDs are available */
 546         case (AMD_ID_LV320T & FLASH_ID_MASK):
 547                 info->flash_id += FLASH_AM320T;
 548                 info->sector_count = 67;
 549                 info->size = 0x00800000;
 550                 break;          /* => 8 MB              */
 551
 552         case (AMD_ID_LV320B & FLASH_ID_MASK):
 553                 info->flash_id += FLASH_AM320B;
 554                 info->sector_count = 67;
 555                 info->size = 0x00800000;
 556                 break;          /* => 8 MB              */
 557 #endif
 558
 559         case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
 560                 info->flash_id += FLASH_INTEL800T;
 561                 info->sector_count = 23;
 562                 info->size = 0x00200000;
 563                 break;          /* => 2 MB              */
 564
 565         case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
 566                 info->flash_id += FLASH_INTEL800B;
 567                 info->sector_count = 23;
 568                 info->size = 0x00200000;
 569                 break;          /* => 2 MB              */
 570
 571         case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
 572                 info->flash_id += FLASH_INTEL160T;
 573                 info->sector_count = 39;
 574                 info->size = 0x00400000;
 575                 break;          /* => 4 MB              */
 576
 577         case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
 578                 info->flash_id += FLASH_INTEL160B;
 579                 info->sector_count = 39;
 580                 info->size = 0x00400000;
 581                 break;          /* => 4 MB              */
 582
 583         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 584                 info->flash_id += FLASH_INTEL320T;
 585                 info->sector_count = 71;
 586                 info->size = 0x00800000;
 587                 break;          /* => 8 MB              */
 588
 589         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 590                 info->flash_id += FLASH_AM320B;
 591                 info->sector_count = 71;
 592                 info->size = 0x00800000;
 593                 break;          /* => 8 MB              */
 594
 595 #if 0                           /* enable when devices are available */
 596         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 597                 info->flash_id += FLASH_INTEL320T;
 598                 info->sector_count = 135;
 599                 info->size = 0x01000000;
 600                 break;          /* => 16 MB             */
 601
 602         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 603                 info->flash_id += FLASH_AM320B;
 604                 info->sector_count = 135;
 605                 info->size = 0x01000000;
 606                 break;          /* => 16 MB             */
 607 #endif
 608         case (INTEL_ID_28F320J3A & FLASH_ID_MASK):
 609                 info->flash_id += FLASH_28F320J3A;
 610                 info->sector_count = 32;
 611                 info->size = 0x00400000;
 612                 break;          /* => 32 MBit   */
 613         case (INTEL_ID_28F640J3A & FLASH_ID_MASK):
 614                 info->flash_id += FLASH_28F640J3A;
 615                 info->sector_count = 64;
 616                 info->size = 0x00800000;
 617                 break;          /* => 64 MBit   */
 618         case (INTEL_ID_28F128J3A & FLASH_ID_MASK):
 619                 info->flash_id += FLASH_28F128J3A;
 620                 info->sector_count = 128;
 621                 info->size = 0x01000000;
 622                 break;          /* => 128 MBit          */
 623
 624         default:
 625                 /* FIXME */
 626                 info->flash_id = FLASH_UNKNOWN;
 627                 return (0);     /* => no or unknown flash */
 628         }
 629
 630         flash_get_offsets (base, info);
 631
 632         /* check for protected sectors */
 633         for (i = 0; i < info->sector_count; i++) {
 634                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 635                 /* D0 = 1 if protected */
 636                 addr = (volatile FLASH_WORD_SIZE *) (info->start[i]);
 637                 info->protect[i] = addr[2] & 1;
 638         }
 639
 640         /*
 641          * Prevent writes to uninitialized FLASH.
 642          */
 643         if (info->flash_id != FLASH_UNKNOWN) {
 644                 addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 645                 if ((info->flash_id & 0xFF00) == FLASH_MAN_INTEL) {
 646                         *addr = (0x00F000F0 & FLASH_ID_MASK);   /* reset bank */
 647                 } else {
 648                         *addr = (0x00FF00FF & FLASH_ID_MASK);   /* reset bank */
 649                 }
 650         }
 651
 652         return (info->size);
 653 }
 654
 655
 656 /*-----------------------------------------------------------------------
 657  */
 658
 659 int flash_erase (flash_info_t * info, int s_first, int s_last)
 660 {
 661
 662         volatile FLASH_WORD_SIZE *addr =
 663                 (volatile FLASH_WORD_SIZE *) (info->start[0]);
 664         int flag, prot, sect, l_sect, barf;
 665         ulong start, now, last;
 666         int rcode = 0;
 667
 668         if ((s_first < 0) || (s_first > s_last)) {
 669                 if (info->flash_id == FLASH_UNKNOWN) {
 670                         printf ("- missing\n");
 671                 } else {
 672                         printf ("- no sectors to erase\n");
 673                 }
 674                 return 1;
 675         }
 676
 677         if ((info->flash_id == FLASH_UNKNOWN) ||
 678             ((info->flash_id > FLASH_AMD_COMP) &&
 679              ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL))) {
 680                 printf ("Can't erase unknown flash type - aborted\n");
 681                 return 1;
 682         }
 683
 684         prot = 0;
 685         for (sect = s_first; sect <= s_last; ++sect) {
 686                 if (info->protect[sect]) {
 687                         prot++;
 688                 }
 689         }
 690
 691         if (prot) {
 692                 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
 693         } else {
 694                 printf ("\n");
 695         }
 696
 697         l_sect = -1;
 698
 699         /* Disable interrupts which might cause a timeout here */
 700         flag = disable_interrupts ();
 701         if (info->flash_id < FLASH_AMD_COMP) {
 702 #ifndef CONFIG_SYS_FLASH_16BIT
 703                 addr[0x0555] = 0x00AA00AA;
 704                 addr[0x02AA] = 0x00550055;
 705                 addr[0x0555] = 0x00800080;
 706                 addr[0x0555] = 0x00AA00AA;
 707                 addr[0x02AA] = 0x00550055;
 708 #else
 709                 addr[0x0555] = 0x00AA;
 710                 addr[0x02AA] = 0x0055;
 711                 addr[0x0555] = 0x0080;
 712                 addr[0x0555] = 0x00AA;
 713                 addr[0x02AA] = 0x0055;
 714 #endif
 715                 /* Start erase on unprotected sectors */
 716                 for (sect = s_first; sect <= s_last; sect++) {
 717                         if (info->protect[sect] == 0) { /* not protected */
 718                                 addr = (volatile FLASH_WORD_SIZE *) (info->
 719                                                                      start
 720                                                                      [sect]);
 721                                 addr[0] = (0x00300030 & FLASH_ID_MASK);
 722                                 l_sect = sect;
 723                         }
 724                 }
 725
 726                 /* re-enable interrupts if necessary */
 727                 if (flag)
 728                         enable_interrupts ();
 729
 730                 /* wait at least 80us - let's wait 1 ms */
 731                 udelay (1000);
 732
 733                 /*
 734                  * We wait for the last triggered sector
 735                  */
 736                 if (l_sect < 0)
 737                         goto DONE;
 738
 739                 start = get_timer (0);
 740                 last = start;
 741                 addr = (volatile FLASH_WORD_SIZE *) (info->start[l_sect]);
 742                 while ((addr[0] & (0x00800080 & FLASH_ID_MASK)) !=
 743                        (0x00800080 & FLASH_ID_MASK)) {
 744                         if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 745                                 printf ("Timeout\n");
 746                                 return 1;
 747                         }
 748                         /* show that we're waiting */
 749                         if ((now - last) > 1000000) {   /* every second */
 750                                 serial_putc ('.');
 751                                 last = now;
 752                         }
 753                 }
 754
 755               DONE:
 756                 /* reset to read mode */
 757                 addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 758                 addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
 759         } else {
 760
 761
 762                 for (sect = s_first; sect <= s_last; sect++) {
 763                         if (info->protect[sect] == 0) { /* not protected */
 764                                 barf = 0;
 765 #ifndef CONFIG_SYS_FLASH_16BIT
 766                                 addr = (vu_long *) (info->start[sect]);
 767                                 addr[0] = 0x00500050;
 768                                 addr[0] = 0x00200020;
 769                                 addr[0] = 0x00D000D0;
 770                                 while (!(addr[0] & 0x00800080));        /* wait for error or finish */
 771                                 if (addr[0] & 0x003A003A) {     /* check for error */
 772                                         barf = addr[0] & 0x003A0000;
 773                                         if (barf) {
 774                                                 barf >>= 16;
 775                                         } else {
 776                                                 barf = addr[0] & 0x0000003A;
 777                                         }
 778                                 }
 779 #else
 780                                 addr = (vu_short *) (info->start[sect]);
 781                                 addr[0] = 0x0050;       /* clear status register */
 782                                 addr[0] = 0x0020;
 783                                 addr[0] = 0x00D0;
 784                                 while (!(addr[0] & 0x0080));    /* wait for error or finish */
 785                                 if (addr[0] & 0x003A)   /* check for error */
 786                                         barf = addr[0] & 0x003A;
 787 #endif
 788                                 if (barf) {
 789                                         printf ("\nFlash error in sector at %lx\n", (unsigned long) addr);
 790                                         if (barf & 0x0002)
 791                                                 printf ("Block locked, not erased.\n");
 792                                         if ((barf & 0x0030) == 0x0030)
 793                                                 printf ("Command Sequence error.\n");
 794                                         if ((barf & 0x0030) == 0x0020)
 795                                                 printf ("Block Erase error.\n");
 796                                         if (barf & 0x0008)
 797                                                 printf ("Vpp Low error.\n");
 798                                         rcode = 1;
 799                                 } else
 800                                         printf (".");
 801                                 l_sect = sect;
 802                         }
 803                         addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 804 #ifndef CONFIG_SYS_FLASH_16BIT
 805                         addr[0] = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
 806 #else
 807                         addr[0] = (0x00FF & FLASH_ID_MASK);     /* reset bank */
 808 #endif
 809                 }
 810
 811         }
 812         printf (" done\n");
 813         return rcode;
 814 }
 815
 816 /*-----------------------------------------------------------------------
 817  */
 818
 819 /*flash_info_t *addr2info (ulong addr)
 820 {
 821         flash_info_t *info;
 822         int i;
 823
 824         for (i=0, info=&flash_info[0]; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
 825                 if ((addr >= info->start[0]) &&
 826                     (addr < (info->start[0] + info->size)) ) {
 827                         return (info);
 828                 }
 829         }
 830
 831         return (NULL);
 832 }
 833 */
 834 /*-----------------------------------------------------------------------
 835  * Copy memory to flash.
 836  * Make sure all target addresses are within Flash bounds,
 837  * and no protected sectors are hit.
 838  * Returns:
 839  * 0 - OK
 840  * 1 - write timeout
 841  * 2 - Flash not erased
 842  * 4 - target range includes protected sectors
 843  * 8 - target address not in Flash memory
 844  */
 845
 846 /*int flash_write (uchar *src, ulong addr, ulong cnt)
 847 {
 848         int i;
 849         ulong         end        = addr + cnt - 1;
 850         flash_info_t *info_first = addr2info (addr);
 851         flash_info_t *info_last  = addr2info (end );
 852         flash_info_t *info;
 853
 854         if (cnt == 0) {
 855                 return (0);
 856         }
 857
 858         if (!info_first || !info_last) {
 859                 return (8);
 860         }
 861
 862         for (info = info_first; info <= info_last; ++info) {
 863                                                                                 ulong b_end = info->start[0] + info->size;*/ /* bank end addr */
 864 /*              short s_end = info->sector_count - 1;
 865                 for (i=0; i<info->sector_count; ++i) {
 866                         ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
 867
 868                         if ((end >= info->start[i]) && (addr < e_addr) &&
 869                             (info->protect[i] != 0) ) {
 870                                 return (4);
 871                         }
 872                 }
 873         }
 874
 875 */ /* finally write data to flash */
 876 /*      for (info = info_first; info <= info_last && cnt>0; ++info) {
 877                 ulong len;
 878
 879                 len = info->start[0] + info->size - addr;
 880                 if (len > cnt)
 881                         len = cnt;
 882                 if ((i = write_buff(info, src, addr, len)) != 0) {
 883                         return (i);
 884                 }
 885                 cnt  -= len;
 886                 addr += len;
 887                 src  += len;
 888         }
 889         return (0);
 890 }
 891 */
 892 /*-----------------------------------------------------------------------
 893  * Copy memory to flash, returns:
 894  * 0 - OK
 895  * 1 - write timeout
 896  * 2 - Flash not erased
 897  */
 898
 899 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 900 {
 901 #ifndef CONFIG_SYS_FLASH_16BIT
 902         ulong cp, wp, data;
 903         int l;
 904 #else
 905         ulong cp, wp;
 906         ushort data;
 907 #endif
 908         int i, rc;
 909
 910 #ifndef CONFIG_SYS_FLASH_16BIT
 911
 912
 913         wp = (addr & ~3);       /* get lower word aligned address */
 914
 915         /*
 916          * handle unaligned start bytes
 917          */
 918         if ((l = addr - wp) != 0) {
 919                 data = 0;
 920                 for (i = 0, cp = wp; i < l; ++i, ++cp) {
 921                         data = (data << 8) | (*(uchar *) cp);
 922                 }
 923                 for (; i < 4 && cnt > 0; ++i) {
 924                         data = (data << 8) | *src++;
 925                         --cnt;
 926                         ++cp;
 927                 }
 928                 for (; cnt == 0 && i < 4; ++i, ++cp) {
 929                         data = (data << 8) | (*(uchar *) cp);
 930                 }
 931
 932                 if ((rc = write_word (info, wp, data)) != 0) {
 933                         return (rc);
 934                 }
 935                 wp += 4;
 936         }
 937
 938         /*
 939          * handle word aligned part
 940          */
 941         while (cnt >= 4) {
 942                 data = 0;
 943                 for (i = 0; i < 4; ++i) {
 944                         data = (data << 8) | *src++;
 945                 }
 946                 if ((rc = write_word (info, wp, data)) != 0) {
 947                         return (rc);
 948                 }
 949                 wp += 4;
 950                 cnt -= 4;
 951         }
 952
 953         if (cnt == 0) {
 954                 return (0);
 955         }
 956
 957         /*
 958          * handle unaligned tail bytes
 959          */
 960         data = 0;
 961         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 962                 data = (data << 8) | *src++;
 963                 --cnt;
 964         }
 965         for (; i < 4; ++i, ++cp) {
 966                 data = (data << 8) | (*(uchar *) cp);
 967         }
 968
 969         return (write_word (info, wp, data));
 970
 971 #else
 972         wp = (addr & ~1);       /* get lower word aligned address */
 973
 974         /*
 975          * handle unaligned start byte
 976          */
 977         if (addr - wp) {
 978                 data = 0;
 979                 data = (data << 8) | *src++;
 980                 --cnt;
 981                 if ((rc = write_short (info, wp, data)) != 0) {
 982                         return (rc);
 983                 }
 984                 wp += 2;
 985         }
 986
 987         /*
 988          * handle word aligned part
 989          */
 990 /*      l = 0; used for debuging  */
 991         while (cnt >= 2) {
 992                 data = 0;
 993                 for (i = 0; i < 2; ++i) {
 994                         data = (data << 8) | *src++;
 995                 }
 996
 997 /*              if(!l){
 998                         printf("%x",data);
 999                         l = 1;
1000                 }  used for debuging */
1001
1002                 if ((rc = write_short (info, wp, data)) != 0) {
1003                         return (rc);
1004                 }
1005                 wp += 2;
1006                 cnt -= 2;
1007         }
1008
1009         if (cnt == 0) {
1010                 return (0);
1011         }
1012
1013         /*
1014          * handle unaligned tail bytes
1015          */
1016         data = 0;
1017         for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
1018                 data = (data << 8) | *src++;
1019                 --cnt;
1020         }
1021         for (; i < 2; ++i, ++cp) {
1022                 data = (data << 8) | (*(uchar *) cp);
1023         }
1024
1025         return (write_short (info, wp, data));
1026
1027
1028 #endif
1029 }
1030
1031 /*-----------------------------------------------------------------------
1032  * Write a word to Flash, returns:
1033  * 0 - OK
1034  * 1 - write timeout
1035  * 2 - Flash not erased
1036  */
1037 #ifndef CONFIG_SYS_FLASH_16BIT
1038 static int write_word (flash_info_t * info, ulong dest, ulong data)
1039 {
1040         vu_long *addr = (vu_long *) (info->start[0]);
1041         ulong start, barf;
1042         int flag;
1043
1044 #if defined (__MIPSEL__)
1045         data = cpu_to_be32 (data);
1046 #endif
1047
1048         /* Check if Flash is (sufficiently) erased */
1049         if ((*((vu_long *) dest) & data) != data) {
1050                 return (2);
1051         }
1052
1053         /* Disable interrupts which might cause a timeout here */
1054         flag = disable_interrupts ();
1055
1056         if (info->flash_id < FLASH_AMD_COMP) {
1057                 /* AMD stuff */
1058                 addr[0x0555] = 0x00AA00AA;
1059                 addr[0x02AA] = 0x00550055;
1060                 addr[0x0555] = 0x00A000A0;
1061         } else {
1062                 /* intel stuff */
1063                 *addr = 0x00400040;
1064         }
1065
1066         *((vu_long *) dest) = data;
1067
1068         /* re-enable interrupts if necessary */
1069         if (flag)
1070                 enable_interrupts ();
1071
1072         /* data polling for D7 */
1073         start = get_timer (0);
1074
1075         if (info->flash_id < FLASH_AMD_COMP) {
1076
1077                 while ((*((vu_long *) dest) & 0x00800080) !=
1078                        (data & 0x00800080)) {
1079                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1080                                 printf ("timeout\n");
1081                                 return (1);
1082                         }
1083                 }
1084
1085         } else {
1086
1087                 while (!(addr[0] & 0x00800080)) {       /* wait for error or finish */
1088                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1089                                 printf ("timeout\n");
1090                                 return (1);
1091                         }
1092                 }
1093
1094                 if (addr[0] & 0x003A003A) {     /* check for error */
1095                         barf = addr[0] & 0x003A0000;
1096                         if (barf) {
1097                                 barf >>= 16;
1098                         } else {
1099                                 barf = addr[0] & 0x0000003A;
1100                         }
1101                         printf ("\nFlash write error at address %lx\n",
1102                                 (unsigned long) dest);
1103                         if (barf & 0x0002)
1104                                 printf ("Block locked, not erased.\n");
1105                         if (barf & 0x0010)
1106                                 printf ("Programming error.\n");
1107                         if (barf & 0x0008)
1108                                 printf ("Vpp Low error.\n");
1109                         return (2);
1110                 }
1111
1112
1113         }
1114
1115         return (0);
1116 }
1117
1118 #else
1119
1120 static int write_short (flash_info_t * info, ulong dest, ushort data)
1121 {
1122         vu_short *addr = (vu_short *) (info->start[0]);
1123         ulong start, barf;
1124         int flag;
1125
1126 #if defined (__MIPSEL__)
1127         data = cpu_to_be16 (data);
1128 #endif
1129
1130         /* Check if Flash is (sufficiently) erased */
1131         if ((*((vu_short *) dest) & data) != data) {
1132                 return (2);
1133         }
1134
1135         /* Disable interrupts which might cause a timeout here */
1136         flag = disable_interrupts ();
1137
1138         if (info->flash_id < FLASH_AMD_COMP) {
1139                 /* AMD stuff */
1140                 addr[0x0555] = 0x00AA;
1141                 addr[0x02AA] = 0x0055;
1142                 addr[0x0555] = 0x00A0;
1143         } else {
1144                 /* intel stuff */
1145                 *addr = 0x00D0;
1146                 *addr = 0x0040;
1147         }
1148         *((vu_short *) dest) = data;
1149
1150         /* re-enable interrupts if necessary */
1151         if (flag)
1152                 enable_interrupts ();
1153
1154         /* data polling for D7 */
1155         start = get_timer (0);
1156
1157         if (info->flash_id < FLASH_AMD_COMP) {
1158                 /* AMD stuff */
1159                 while ((*((vu_short *) dest) & 0x0080) != (data & 0x0080)) {
1160                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1161                                 return (1);
1162                         }
1163                 }
1164
1165         } else {
1166                 /* intel stuff */
1167                 while (!(addr[0] & 0x0080)) {   /* wait for error or finish */
1168                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT)
1169                                 return (1);
1170                 }
1171
1172                 if (addr[0] & 0x003A) { /* check for error */
1173                         barf = addr[0] & 0x003A;
1174                         printf ("\nFlash write error at address %lx\n",
1175                                 (unsigned long) dest);
1176                         if (barf & 0x0002)
1177                                 printf ("Block locked, not erased.\n");
1178                         if (barf & 0x0010)
1179                                 printf ("Programming error.\n");
1180                         if (barf & 0x0008)
1181                                 printf ("Vpp Low error.\n");
1182                         return (2);
1183                 }
1184                 *addr = 0x00B0;
1185                 *addr = 0x0070;
1186                 while (!(addr[0] & 0x0080)) {   /* wait for error or finish */
1187                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT)
1188                                 return (1);
1189                 }
1190
1191                 *addr = 0x00FF;
1192
1193         }
1194
1195         return (0);
1196
1197 }
1198 #endif