uboot/board/esteem192e/flash.c
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   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#include <common.h>
  25#include <mpc8xx.h>
  26
  27flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips        */
  28
  29#ifdef CONFIG_FLASH_16BIT
  30#define FLASH_WORD_SIZE unsigned short
  31#define FLASH_ID_MASK   0xFFFF
  32#else
  33#define FLASH_WORD_SIZE unsigned long
  34#define FLASH_ID_MASK   0xFFFFFFFF
  35#endif
  36
  37/*-----------------------------------------------------------------------
  38 * Functions
  39 */
  40
  41ulong flash_get_size (volatile FLASH_WORD_SIZE * addr, flash_info_t * info);
  42
  43#ifndef CONFIG_FLASH_16BIT
  44static int write_word (flash_info_t * info, ulong dest, ulong data);
  45#else
  46static int write_short (flash_info_t * info, ulong dest, ushort data);
  47#endif
  48/*int flash_write (uchar *, ulong, ulong); */
  49/*flash_info_t *addr2info (ulong);   */
  50
  51static void flash_get_offsets (ulong base, flash_info_t * info);
  52
  53/*-----------------------------------------------------------------------
  54 */
  55unsigned long flash_init (void)
  56{
  57        volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
  58        volatile memctl8xx_t *memctl = &immap->im_memctl;
  59        unsigned long size_b0, size_b1;
  60        int i;
  61
  62        /* Init: no FLASHes known */
  63        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  64                flash_info[i].flash_id = FLASH_UNKNOWN;
  65        }
  66
  67        /* Static FLASH Bank configuration here - FIXME XXX */
  68
  69        size_b0 =
  70                flash_get_size ((volatile FLASH_WORD_SIZE *)
  71                                FLASH_BASE0_PRELIM, &flash_info[0]);
  72        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  73                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0 << 20);
  74        }
  75
  76        size_b1 =
  77                flash_get_size ((volatile FLASH_WORD_SIZE *)
  78                                FLASH_BASE1_PRELIM, &flash_info[1]);
  79
  80        if (size_b1 > size_b0) {
  81                printf ("## ERROR: "
  82                        "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
  83                        size_b1, size_b1 << 20, size_b0, size_b0 << 20);
  84                flash_info[0].flash_id = FLASH_UNKNOWN;
  85                flash_info[1].flash_id = FLASH_UNKNOWN;
  86                flash_info[0].sector_count = -1;
  87                flash_info[1].sector_count = -1;
  88                flash_info[0].size = 0;
  89                flash_info[1].size = 0;
  90                return (0);
  91        }
  92
  93        /* Remap FLASH according to real size */
  94        memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
  95        memctl->memc_br0 = CONFIG_SYS_FLASH_BASE | 0x00000801;  /*  (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; */
  96
  97        /* Re-do sizing to get full correct info */
  98
  99        size_b0 = flash_get_size ((volatile FLASH_WORD_SIZE *) CONFIG_SYS_FLASH_BASE,
 100                                  &flash_info[0]);
 101        flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
 102
 103#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 104        /* monitor protection ON by default */
 105        (void) flash_protect (FLAG_PROTECT_SET,
 106                              CONFIG_SYS_MONITOR_BASE,
 107                              CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
 108                              &flash_info[0]);
 109#endif
 110
 111        if (size_b1) {
 112                memctl->memc_or1 =
 113                        CONFIG_SYS_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
 114                memctl->memc_br1 =
 115                        (CONFIG_SYS_FLASH_BASE | 0x00000801) + (size_b0 & BR_BA_MSK);
 116                /*((CONFIG_SYS_FLASH_BASE + size_b0) & BR_BA_MSK) |
 117                   BR_MS_GPCM | BR_V; */
 118
 119                /* Re-do sizing to get full correct info */
 120                size_b1 =
 121                        flash_get_size ((volatile FLASH_WORD_SIZE
 122                                         *) (CONFIG_SYS_FLASH_BASE + size_b0),
 123                                        &flash_info[1]);
 124
 125                flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]);
 126
 127#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 128                /* monitor protection ON by default */
 129                (void) flash_protect (FLAG_PROTECT_SET,
 130                                      CONFIG_SYS_MONITOR_BASE,
 131                                      CONFIG_SYS_MONITOR_BASE + monitor_flash_len -
 132                                      1, &flash_info[1]);
 133#endif
 134        } else {
 135                memctl->memc_br1 = 0;   /* invalidate bank */
 136
 137                flash_info[1].flash_id = FLASH_UNKNOWN;
 138                flash_info[1].sector_count = -1;
 139        }
 140
 141        flash_info[0].size = size_b0;
 142        flash_info[1].size = size_b1;
 143
 144        return (size_b0 + size_b1);
 145}
 146
 147/*-----------------------------------------------------------------------
 148 */
 149static void flash_get_offsets (ulong base, flash_info_t * info)
 150{
 151        int i;
 152
 153        /* set up sector start adress table */
 154        if (info->flash_id & FLASH_BTYPE) {
 155                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 156
 157#ifndef CONFIG_FLASH_16BIT
 158                        /* set sector offsets for bottom boot block type        */
 159                        info->start[0] = base + 0x00000000;
 160                        info->start[1] = base + 0x00004000;
 161                        info->start[2] = base + 0x00008000;
 162                        info->start[3] = base + 0x0000C000;
 163                        info->start[4] = base + 0x00010000;
 164                        info->start[5] = base + 0x00014000;
 165                        info->start[6] = base + 0x00018000;
 166                        info->start[7] = base + 0x0001C000;
 167                        for (i = 8; i < info->sector_count; i++) {
 168                                info->start[i] =
 169                                        base + (i * 0x00020000) - 0x000E0000;
 170                        }
 171                } else {
 172                        /* set sector offsets for bottom boot block type        */
 173                        info->start[0] = base + 0x00000000;
 174                        info->start[1] = base + 0x00008000;
 175                        info->start[2] = base + 0x0000C000;
 176                        info->start[3] = base + 0x00010000;
 177                        for (i = 4; i < info->sector_count; i++) {
 178                                info->start[i] =
 179                                        base + (i * 0x00020000) - 0x00060000;
 180                        }
 181                }
 182#else
 183                        /* set sector offsets for bottom boot block type        */
 184                        info->start[0] = base + 0x00000000;
 185                        info->start[1] = base + 0x00002000;
 186                        info->start[2] = base + 0x00004000;
 187                        info->start[3] = base + 0x00006000;
 188                        info->start[4] = base + 0x00008000;
 189                        info->start[5] = base + 0x0000A000;
 190                        info->start[6] = base + 0x0000C000;
 191                        info->start[7] = base + 0x0000E000;
 192                        for (i = 8; i < info->sector_count; i++) {
 193                                info->start[i] =
 194                                        base + (i * 0x00010000) - 0x00070000;
 195                        }
 196                } else {
 197                        /* set sector offsets for bottom boot block type        */
 198                        info->start[0] = base + 0x00000000;
 199                        info->start[1] = base + 0x00004000;
 200                        info->start[2] = base + 0x00006000;
 201                        info->start[3] = base + 0x00008000;
 202                        for (i = 4; i < info->sector_count; i++) {
 203                                info->start[i] =
 204                                        base + (i * 0x00010000) - 0x00030000;
 205                        }
 206                }
 207#endif
 208        } else {
 209                /* set sector offsets for top boot block type           */
 210                i = info->sector_count - 1;
 211                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 212
 213#ifndef CONFIG_FLASH_16BIT
 214                        info->start[i--] = base + info->size - 0x00004000;
 215                        info->start[i--] = base + info->size - 0x00008000;
 216                        info->start[i--] = base + info->size - 0x0000C000;
 217                        info->start[i--] = base + info->size - 0x00010000;
 218                        info->start[i--] = base + info->size - 0x00014000;
 219                        info->start[i--] = base + info->size - 0x00018000;
 220                        info->start[i--] = base + info->size - 0x0001C000;
 221                        for (; i >= 0; i--) {
 222                                info->start[i] = base + i * 0x00020000;
 223                        }
 224
 225                } else {
 226
 227                        info->start[i--] = base + info->size - 0x00008000;
 228                        info->start[i--] = base + info->size - 0x0000C000;
 229                        info->start[i--] = base + info->size - 0x00010000;
 230                        for (; i >= 0; i--) {
 231                                info->start[i] = base + i * 0x00020000;
 232                        }
 233                }
 234#else
 235                        info->start[i--] = base + info->size - 0x00002000;
 236                        info->start[i--] = base + info->size - 0x00004000;
 237                        info->start[i--] = base + info->size - 0x00006000;
 238                        info->start[i--] = base + info->size - 0x00008000;
 239                        info->start[i--] = base + info->size - 0x0000A000;
 240                        info->start[i--] = base + info->size - 0x0000C000;
 241                        info->start[i--] = base + info->size - 0x0000E000;
 242                        for (; i >= 0; i--) {
 243                                info->start[i] = base + i * 0x00010000;
 244                        }
 245
 246                } else {
 247
 248                        info->start[i--] = base + info->size - 0x00004000;
 249                        info->start[i--] = base + info->size - 0x00006000;
 250                        info->start[i--] = base + info->size - 0x00008000;
 251                        for (; i >= 0; i--) {
 252                                info->start[i] = base + i * 0x00010000;
 253                        }
 254                }
 255#endif
 256        }
 257
 258
 259}
 260
 261/*-----------------------------------------------------------------------
 262 */
 263void flash_print_info (flash_info_t * info)
 264{
 265        int i;
 266        uchar *boottype;
 267        uchar botboot[] = ", bottom boot sect)\n";
 268        uchar topboot[] = ", top boot sector)\n";
 269
 270        if (info->flash_id == FLASH_UNKNOWN) {
 271                printf ("missing or unknown FLASH type\n");
 272                return;
 273        }
 274
 275        switch (info->flash_id & FLASH_VENDMASK) {
 276        case FLASH_MAN_AMD:
 277                printf ("AMD ");
 278                break;
 279        case FLASH_MAN_FUJ:
 280                printf ("FUJITSU ");
 281                break;
 282        case FLASH_MAN_SST:
 283                printf ("SST ");
 284                break;
 285        case FLASH_MAN_STM:
 286                printf ("STM ");
 287                break;
 288        case FLASH_MAN_INTEL:
 289                printf ("INTEL ");
 290                break;
 291        default:
 292                printf ("Unknown Vendor ");
 293                break;
 294        }
 295
 296        if (info->flash_id & 0x0001) {
 297                boottype = botboot;
 298        } else {
 299                boottype = topboot;
 300        }
 301
 302        switch (info->flash_id & FLASH_TYPEMASK) {
 303        case FLASH_AM400B:
 304                printf ("AM29LV400B (4 Mbit%s", boottype);
 305                break;
 306        case FLASH_AM400T:
 307                printf ("AM29LV400T (4 Mbit%s", boottype);
 308                break;
 309        case FLASH_AM800B:
 310                printf ("AM29LV800B (8 Mbit%s", boottype);
 311                break;
 312        case FLASH_AM800T:
 313                printf ("AM29LV800T (8 Mbit%s", boottype);
 314                break;
 315        case FLASH_AM160B:
 316                printf ("AM29LV160B (16 Mbit%s", boottype);
 317                break;
 318        case FLASH_AM160T:
 319                printf ("AM29LV160T (16 Mbit%s", boottype);
 320                break;
 321        case FLASH_AM320B:
 322                printf ("AM29LV320B (32 Mbit%s", boottype);
 323                break;
 324        case FLASH_AM320T:
 325                printf ("AM29LV320T (32 Mbit%s", boottype);
 326                break;
 327        case FLASH_INTEL800B:
 328                printf ("INTEL28F800B (8 Mbit%s", boottype);
 329                break;
 330        case FLASH_INTEL800T:
 331                printf ("INTEL28F800T (8 Mbit%s", boottype);
 332                break;
 333        case FLASH_INTEL160B:
 334                printf ("INTEL28F160B (16 Mbit%s", boottype);
 335                break;
 336        case FLASH_INTEL160T:
 337                printf ("INTEL28F160T (16 Mbit%s", boottype);
 338                break;
 339        case FLASH_INTEL320B:
 340                printf ("INTEL28F320B (32 Mbit%s", boottype);
 341                break;
 342        case FLASH_INTEL320T:
 343                printf ("INTEL28F320T (32 Mbit%s", boottype);
 344                break;
 345
 346#if 0                           /* enable when devices are available */
 347
 348        case FLASH_INTEL640B:
 349                printf ("INTEL28F640B (64 Mbit%s", boottype);
 350                break;
 351        case FLASH_INTEL640T:
 352                printf ("INTEL28F640T (64 Mbit%s", boottype);
 353                break;
 354#endif
 355
 356        default:
 357                printf ("Unknown Chip Type\n");
 358                break;
 359        }
 360
 361        printf ("  Size: %ld MB in %d Sectors\n",
 362                info->size >> 20, info->sector_count);
 363
 364        printf ("  Sector Start Addresses:");
 365        for (i = 0; i < info->sector_count; ++i) {
 366                if ((i % 5) == 0)
 367                        printf ("\n   ");
 368                printf (" %08lX%s",
 369                        info->start[i], info->protect[i] ? " (RO)" : "     ");
 370        }
 371        printf ("\n");
 372        return;
 373}
 374
 375/*-----------------------------------------------------------------------
 376 */
 377
 378
 379/*-----------------------------------------------------------------------
 380 */
 381
 382/*
 383 * The following code cannot be run from FLASH!
 384 */
 385ulong flash_get_size (volatile FLASH_WORD_SIZE * addr, flash_info_t * info)
 386{
 387        short i;
 388        ulong base = (ulong) addr;
 389        FLASH_WORD_SIZE value;
 390
 391        /* Write auto select command: read Manufacturer ID */
 392
 393
 394#ifndef CONFIG_FLASH_16BIT
 395
 396        /*
 397         * Note: if it is an AMD flash and the word at addr[0000]
 398         * is 0x00890089 this routine will think it is an Intel
 399         * flash device and may(most likely) cause trouble.
 400         */
 401
 402        addr[0x0000] = 0x00900090;
 403        if (addr[0x0000] != 0x00890089) {
 404                addr[0x0555] = 0x00AA00AA;
 405                addr[0x02AA] = 0x00550055;
 406                addr[0x0555] = 0x00900090;
 407#else
 408
 409        /*
 410         * Note: if it is an AMD flash and the word at addr[0000]
 411         * is 0x0089 this routine will think it is an Intel
 412         * flash device and may(most likely) cause trouble.
 413         */
 414
 415        addr[0x0000] = 0x0090;
 416
 417        if (addr[0x0000] != 0x0089) {
 418                addr[0x0555] = 0x00AA;
 419                addr[0x02AA] = 0x0055;
 420                addr[0x0555] = 0x0090;
 421#endif
 422        }
 423        value = addr[0];
 424
 425        switch (value) {
 426        case (AMD_MANUFACT & FLASH_ID_MASK):
 427                info->flash_id = FLASH_MAN_AMD;
 428                break;
 429        case (FUJ_MANUFACT & FLASH_ID_MASK):
 430                info->flash_id = FLASH_MAN_FUJ;
 431                break;
 432        case (STM_MANUFACT & FLASH_ID_MASK):
 433                info->flash_id = FLASH_MAN_STM;
 434                break;
 435        case (SST_MANUFACT & FLASH_ID_MASK):
 436                info->flash_id = FLASH_MAN_SST;
 437                break;
 438        case (INTEL_MANUFACT & FLASH_ID_MASK):
 439                info->flash_id = FLASH_MAN_INTEL;
 440                break;
 441        default:
 442                info->flash_id = FLASH_UNKNOWN;
 443                info->sector_count = 0;
 444                info->size = 0;
 445                return (0);     /* no or unknown flash  */
 446
 447        }
 448
 449        value = addr[1];        /* device ID            */
 450
 451        switch (value) {
 452
 453        case (AMD_ID_LV400T & FLASH_ID_MASK):
 454                info->flash_id += FLASH_AM400T;
 455                info->sector_count = 11;
 456                info->size = 0x00100000;
 457                break;          /* => 1 MB              */
 458
 459        case (AMD_ID_LV400B & FLASH_ID_MASK):
 460                info->flash_id += FLASH_AM400B;
 461                info->sector_count = 11;
 462                info->size = 0x00100000;
 463                break;          /* => 1 MB              */
 464
 465        case (AMD_ID_LV800T & FLASH_ID_MASK):
 466                info->flash_id += FLASH_AM800T;
 467                info->sector_count = 19;
 468                info->size = 0x00200000;
 469                break;          /* => 2 MB              */
 470
 471        case (AMD_ID_LV800B & FLASH_ID_MASK):
 472                info->flash_id += FLASH_AM800B;
 473                info->sector_count = 19;
 474                info->size = 0x00200000;
 475                break;          /* => 2 MB              */
 476
 477        case (AMD_ID_LV160T & FLASH_ID_MASK):
 478                info->flash_id += FLASH_AM160T;
 479                info->sector_count = 35;
 480                info->size = 0x00400000;
 481                break;          /* => 4 MB              */
 482
 483        case (AMD_ID_LV160B & FLASH_ID_MASK):
 484                info->flash_id += FLASH_AM160B;
 485                info->sector_count = 35;
 486                info->size = 0x00400000;
 487                break;          /* => 4 MB              */
 488#if 0                           /* enable when device IDs are available */
 489        case (AMD_ID_LV320T & FLASH_ID_MASK):
 490                info->flash_id += FLASH_AM320T;
 491                info->sector_count = 67;
 492                info->size = 0x00800000;
 493                break;          /* => 8 MB              */
 494
 495        case (AMD_ID_LV320B & FLASH_ID_MASK):
 496                info->flash_id += FLASH_AM320B;
 497                info->sector_count = 67;
 498                info->size = 0x00800000;
 499                break;          /* => 8 MB              */
 500#endif
 501
 502        case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
 503                info->flash_id += FLASH_INTEL800T;
 504                info->sector_count = 23;
 505                info->size = 0x00200000;
 506                break;          /* => 2 MB              */
 507
 508        case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
 509                info->flash_id += FLASH_INTEL800B;
 510                info->sector_count = 23;
 511                info->size = 0x00200000;
 512                break;          /* => 2 MB              */
 513
 514        case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
 515                info->flash_id += FLASH_INTEL160T;
 516                info->sector_count = 39;
 517                info->size = 0x00400000;
 518                break;          /* => 4 MB              */
 519
 520        case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
 521                info->flash_id += FLASH_INTEL160B;
 522                info->sector_count = 39;
 523                info->size = 0x00400000;
 524                break;          /* => 4 MB              */
 525
 526        case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 527                info->flash_id += FLASH_INTEL320T;
 528                info->sector_count = 71;
 529                info->size = 0x00800000;
 530                break;          /* => 8 MB              */
 531
 532        case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 533                info->flash_id += FLASH_AM320B;
 534                info->sector_count = 71;
 535                info->size = 0x00800000;
 536                break;          /* => 8 MB              */
 537
 538#if 0                           /* enable when devices are available */
 539        case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 540                info->flash_id += FLASH_INTEL320T;
 541                info->sector_count = 135;
 542                info->size = 0x01000000;
 543                break;          /* => 16 MB             */
 544
 545        case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 546                info->flash_id += FLASH_AM320B;
 547                info->sector_count = 135;
 548                info->size = 0x01000000;
 549                break;          /* => 16 MB             */
 550#endif
 551        default:
 552                info->flash_id = FLASH_UNKNOWN;
 553                return (0);     /* => no or unknown flash */
 554
 555        }
 556
 557        /* set up sector start adress table */
 558        if (info->flash_id & FLASH_BTYPE) {
 559                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 560
 561#ifndef CONFIG_FLASH_16BIT
 562                        /* set sector offsets for bottom boot block type        */
 563                        info->start[0] = base + 0x00000000;
 564                        info->start[1] = base + 0x00004000;
 565                        info->start[2] = base + 0x00008000;
 566                        info->start[3] = base + 0x0000C000;
 567                        info->start[4] = base + 0x00010000;
 568                        info->start[5] = base + 0x00014000;
 569                        info->start[6] = base + 0x00018000;
 570                        info->start[7] = base + 0x0001C000;
 571                        for (i = 8; i < info->sector_count; i++) {
 572                                info->start[i] =
 573                                        base + (i * 0x00020000) - 0x000E0000;
 574                        }
 575                } else {
 576                        /* set sector offsets for bottom boot block type        */
 577                        info->start[0] = base + 0x00000000;
 578                        info->start[1] = base + 0x00008000;
 579                        info->start[2] = base + 0x0000C000;
 580                        info->start[3] = base + 0x00010000;
 581                        for (i = 4; i < info->sector_count; i++) {
 582                                info->start[i] =
 583                                        base + (i * 0x00020000) - 0x00060000;
 584                        }
 585                }
 586#else
 587                        /* set sector offsets for bottom boot block type        */
 588                        info->start[0] = base + 0x00000000;
 589                        info->start[1] = base + 0x00002000;
 590                        info->start[2] = base + 0x00004000;
 591                        info->start[3] = base + 0x00006000;
 592                        info->start[4] = base + 0x00008000;
 593                        info->start[5] = base + 0x0000A000;
 594                        info->start[6] = base + 0x0000C000;
 595                        info->start[7] = base + 0x0000E000;
 596                        for (i = 8; i < info->sector_count; i++) {
 597                                info->start[i] =
 598                                        base + (i * 0x00010000) - 0x00070000;
 599                        }
 600                } else {
 601                        /* set sector offsets for bottom boot block type        */
 602                        info->start[0] = base + 0x00000000;
 603                        info->start[1] = base + 0x00004000;
 604                        info->start[2] = base + 0x00006000;
 605                        info->start[3] = base + 0x00008000;
 606                        for (i = 4; i < info->sector_count; i++) {
 607                                info->start[i] =
 608                                        base + (i * 0x00010000) - 0x00030000;
 609                        }
 610                }
 611#endif
 612        } else {
 613                /* set sector offsets for top boot block type           */
 614                i = info->sector_count - 1;
 615                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 616
 617#ifndef CONFIG_FLASH_16BIT
 618                        info->start[i--] = base + info->size - 0x00004000;
 619                        info->start[i--] = base + info->size - 0x00008000;
 620                        info->start[i--] = base + info->size - 0x0000C000;
 621                        info->start[i--] = base + info->size - 0x00010000;
 622                        info->start[i--] = base + info->size - 0x00014000;
 623                        info->start[i--] = base + info->size - 0x00018000;
 624                        info->start[i--] = base + info->size - 0x0001C000;
 625                        for (; i >= 0; i--) {
 626                                info->start[i] = base + i * 0x00020000;
 627                        }
 628
 629                } else {
 630
 631                        info->start[i--] = base + info->size - 0x00008000;
 632                        info->start[i--] = base + info->size - 0x0000C000;
 633                        info->start[i--] = base + info->size - 0x00010000;
 634                        for (; i >= 0; i--) {
 635                                info->start[i] = base + i * 0x00020000;
 636                        }
 637                }
 638#else
 639                        info->start[i--] = base + info->size - 0x00002000;
 640                        info->start[i--] = base + info->size - 0x00004000;
 641                        info->start[i--] = base + info->size - 0x00006000;
 642                        info->start[i--] = base + info->size - 0x00008000;
 643                        info->start[i--] = base + info->size - 0x0000A000;
 644                        info->start[i--] = base + info->size - 0x0000C000;
 645                        info->start[i--] = base + info->size - 0x0000E000;
 646                        for (; i >= 0; i--) {
 647                                info->start[i] = base + i * 0x00010000;
 648                        }
 649
 650                } else {
 651
 652                        info->start[i--] = base + info->size - 0x00004000;
 653                        info->start[i--] = base + info->size - 0x00006000;
 654                        info->start[i--] = base + info->size - 0x00008000;
 655                        for (; i >= 0; i--) {
 656                                info->start[i] = base + i * 0x00010000;
 657                        }
 658                }
 659#endif
 660        }
 661
 662        /* check for protected sectors */
 663        for (i = 0; i < info->sector_count; i++) {
 664                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 665                /* D0 = 1 if protected */
 666                addr = (volatile FLASH_WORD_SIZE *) (info->start[i]);
 667                info->protect[i] = addr[2] & 1;
 668        }
 669
 670        /*
 671         * Prevent writes to uninitialized FLASH.
 672         */
 673        if (info->flash_id != FLASH_UNKNOWN) {
 674                addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 675                if ((info->flash_id & 0xFF00) == FLASH_MAN_INTEL) {
 676                        *addr = (0x00F000F0 & FLASH_ID_MASK);   /* reset bank */
 677                } else {
 678                        *addr = (0x00FF00FF & FLASH_ID_MASK);   /* reset bank */
 679                }
 680        }
 681
 682        return (info->size);
 683}
 684
 685
 686/*-----------------------------------------------------------------------
 687 */
 688
 689int flash_erase (flash_info_t * info, int s_first, int s_last)
 690{
 691
 692        volatile FLASH_WORD_SIZE *addr =
 693                (volatile FLASH_WORD_SIZE *) (info->start[0]);
 694        int flag, prot, sect, l_sect, barf;
 695        ulong start, now, last;
 696        int rcode = 0;
 697
 698        if ((s_first < 0) || (s_first > s_last)) {
 699                if (info->flash_id == FLASH_UNKNOWN) {
 700                        printf ("- missing\n");
 701                } else {
 702                        printf ("- no sectors to erase\n");
 703                }
 704                return 1;
 705        }
 706
 707        if ((info->flash_id == FLASH_UNKNOWN) ||
 708            ((info->flash_id > FLASH_AMD_COMP) &&
 709             ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL))) {
 710                printf ("Can't erase unknown flash type - aborted\n");
 711                return 1;
 712        }
 713
 714        prot = 0;
 715        for (sect = s_first; sect <= s_last; ++sect) {
 716                if (info->protect[sect]) {
 717                        prot++;
 718                }
 719        }
 720
 721        if (prot) {
 722                printf ("- Warning: %d protected sectors will not be erased!\n", prot);
 723        } else {
 724                printf ("\n");
 725        }
 726
 727        l_sect = -1;
 728
 729        /* Disable interrupts which might cause a timeout here */
 730        flag = disable_interrupts ();
 731        if (info->flash_id < FLASH_AMD_COMP) {
 732#ifndef CONFIG_FLASH_16BIT
 733                addr[0x0555] = 0x00AA00AA;
 734                addr[0x02AA] = 0x00550055;
 735                addr[0x0555] = 0x00800080;
 736                addr[0x0555] = 0x00AA00AA;
 737                addr[0x02AA] = 0x00550055;
 738#else
 739                addr[0x0555] = 0x00AA;
 740                addr[0x02AA] = 0x0055;
 741                addr[0x0555] = 0x0080;
 742                addr[0x0555] = 0x00AA;
 743                addr[0x02AA] = 0x0055;
 744#endif
 745                /* Start erase on unprotected sectors */
 746                for (sect = s_first; sect <= s_last; sect++) {
 747                        if (info->protect[sect] == 0) { /* not protected */
 748                                addr = (volatile FLASH_WORD_SIZE *) (info->start[sect]);
 749                                addr[0] = (0x00300030 & FLASH_ID_MASK);
 750                                l_sect = sect;
 751                        }
 752                }
 753
 754                /* re-enable interrupts if necessary */
 755                if (flag)
 756                        enable_interrupts ();
 757
 758                /* wait at least 80us - let's wait 1 ms */
 759                udelay (1000);
 760
 761                /*
 762                 * We wait for the last triggered sector
 763                 */
 764                if (l_sect < 0)
 765                        goto DONE;
 766
 767                start = get_timer (0);
 768                last = start;
 769                addr = (volatile FLASH_WORD_SIZE *) (info->start[l_sect]);
 770                while ((addr[0] & (0x00800080 & FLASH_ID_MASK)) !=
 771                       (0x00800080 & FLASH_ID_MASK)) {
 772                        if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 773                                printf ("Timeout\n");
 774                                return 1;
 775                        }
 776                        /* show that we're waiting */
 777                        if ((now - last) > 1000) {      /* every second */
 778                                serial_putc ('.');
 779                                last = now;
 780                        }
 781                }
 782
 783              DONE:
 784                /* reset to read mode */
 785                addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 786                addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
 787        } else {
 788
 789
 790                for (sect = s_first; sect <= s_last; sect++) {
 791                        if (info->protect[sect] == 0) { /* not protected */
 792                                barf = 0;
 793#ifndef CONFIG_FLASH_16BIT
 794                                addr = (vu_long *) (info->start[sect]);
 795                                addr[0] = 0x00200020;
 796                                addr[0] = 0x00D000D0;
 797                                while (!(addr[0] & 0x00800080));        /* wait for error or finish */
 798                                if (addr[0] & 0x003A003A) {     /* check for error */
 799                                        barf = addr[0] & 0x003A0000;
 800                                        if (barf) {
 801                                                barf >>= 16;
 802                                        } else {
 803                                                barf = addr[0] & 0x0000003A;
 804                                        }
 805                                }
 806#else
 807                                addr = (vu_short *) (info->start[sect]);
 808                                addr[0] = 0x0020;
 809                                addr[0] = 0x00D0;
 810                                while (!(addr[0] & 0x0080));    /* wait for error or finish */
 811                                if (addr[0] & 0x003A)   /* check for error */
 812                                        barf = addr[0] & 0x003A;
 813#endif
 814                                if (barf) {
 815                                        printf ("\nFlash error in sector at %lx\n", (unsigned long) addr);
 816                                        if (barf & 0x0002)
 817                                                printf ("Block locked, not erased.\n");
 818                                        if ((barf & 0x0030) == 0x0030)
 819                                                printf ("Command Sequence error.\n");
 820                                        if ((barf & 0x0030) == 0x0020)
 821                                                printf ("Block Erase error.\n");
 822                                        if (barf & 0x0008)
 823                                                printf ("Vpp Low error.\n");
 824                                        rcode = 1;
 825                                } else
 826                                        printf (".");
 827                                l_sect = sect;
 828                        }
 829                        addr = (volatile FLASH_WORD_SIZE *) info->start[0];
 830                        addr[0] = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
 831
 832                }
 833
 834        }
 835        printf (" done\n");
 836        return rcode;
 837}
 838
 839/*-----------------------------------------------------------------------
 840 */
 841
 842/*-----------------------------------------------------------------------
 843 * Copy memory to flash, returns:
 844 * 0 - OK
 845 * 1 - write timeout
 846 * 2 - Flash not erased
 847 */
 848
 849int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 850{
 851#ifndef CONFIG_FLASH_16BIT
 852        ulong cp, wp, data;
 853        int l;
 854#else
 855        ulong cp, wp;
 856        ushort data;
 857#endif
 858        int i, rc;
 859
 860#ifndef CONFIG_FLASH_16BIT
 861
 862
 863        wp = (addr & ~3);       /* get lower word aligned address */
 864
 865        /*
 866         * handle unaligned start bytes
 867         */
 868        if ((l = addr - wp) != 0) {
 869                data = 0;
 870                for (i = 0, cp = wp; i < l; ++i, ++cp) {
 871                        data = (data << 8) | (*(uchar *) cp);
 872                }
 873                for (; i < 4 && cnt > 0; ++i) {
 874                        data = (data << 8) | *src++;
 875                        --cnt;
 876                        ++cp;
 877                }
 878                for (; cnt == 0 && i < 4; ++i, ++cp) {
 879                        data = (data << 8) | (*(uchar *) cp);
 880                }
 881
 882                if ((rc = write_word (info, wp, data)) != 0) {
 883                        return (rc);
 884                }
 885                wp += 4;
 886        }
 887
 888        /*
 889         * handle word aligned part
 890         */
 891        while (cnt >= 4) {
 892                data = 0;
 893                for (i = 0; i < 4; ++i) {
 894                        data = (data << 8) | *src++;
 895                }
 896                if ((rc = write_word (info, wp, data)) != 0) {
 897                        return (rc);
 898                }
 899                wp += 4;
 900                cnt -= 4;
 901        }
 902
 903        if (cnt == 0) {
 904                return (0);
 905        }
 906
 907        /*
 908         * handle unaligned tail bytes
 909         */
 910        data = 0;
 911        for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 912                data = (data << 8) | *src++;
 913                --cnt;
 914        }
 915        for (; i < 4; ++i, ++cp) {
 916                data = (data << 8) | (*(uchar *) cp);
 917        }
 918
 919        return (write_word (info, wp, data));
 920
 921#else
 922        wp = (addr & ~1);       /* get lower word aligned address */
 923
 924        /*
 925         * handle unaligned start byte
 926         */
 927        if (addr - wp) {
 928                data = 0;
 929                data = (data << 8) | *src++;
 930                --cnt;
 931                if ((rc = write_short (info, wp, data)) != 0) {
 932                        return (rc);
 933                }
 934                wp += 2;
 935        }
 936
 937        /*
 938         * handle word aligned part
 939         */
 940/*      l = 0; used for debuging  */
 941        while (cnt >= 2) {
 942                data = 0;
 943                for (i = 0; i < 2; ++i) {
 944                        data = (data << 8) | *src++;
 945                }
 946
 947/*              if(!l){
 948                        printf("%x",data);
 949                        l = 1;
 950                }  used for debuging */
 951
 952                if ((rc = write_short (info, wp, data)) != 0) {
 953                        return (rc);
 954                }
 955                wp += 2;
 956                cnt -= 2;
 957        }
 958
 959        if (cnt == 0) {
 960                return (0);
 961        }
 962
 963        /*
 964         * handle unaligned tail bytes
 965         */
 966        data = 0;
 967        for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
 968                data = (data << 8) | *src++;
 969                --cnt;
 970        }
 971        for (; i < 2; ++i, ++cp) {
 972                data = (data << 8) | (*(uchar *) cp);
 973        }
 974
 975        return (write_short (info, wp, data));
 976
 977
 978#endif
 979}
 980
 981/*-----------------------------------------------------------------------
 982 * Write a word to Flash, returns:
 983 * 0 - OK
 984 * 1 - write timeout
 985 * 2 - Flash not erased
 986 */
 987#ifndef CONFIG_FLASH_16BIT
 988static int write_word (flash_info_t * info, ulong dest, ulong data)
 989{
 990        vu_long *addr = (vu_long *) (info->start[0]);
 991        ulong start, barf;
 992        int flag;
 993
 994
 995        /* Check if Flash is (sufficiently) erased */
 996        if ((*((vu_long *) dest) & data) != data) {
 997                return (2);
 998        }
 999
1000        /* Disable interrupts which might cause a timeout here */

1001        flag = disable_interrupts ();
1002
1003        if (info->flash_id > FLASH_AMD_COMP) {
1004                /* AMD stuff */
1005                addr[0x0555] = 0x00AA00AA;
1006                addr[0x02AA] = 0x00550055;
1007                addr[0x0555] = 0x00A000A0;
1008        } else {
1009                /* intel stuff */
1010                *addr = 0x00400040;
1011        }
1012        *((vu_long *) dest) = data;
1013
1014        /* re-enable interrupts if necessary */
1015        if (flag)
1016                enable_interrupts ();
1017
1018        /* data polling for D7 */
1019        start = get_timer (0);
1020
1021        if (info->flash_id > FLASH_AMD_COMP) {
1022
1023                while ((*((vu_long *) dest) & 0x00800080) !=
1024                       (data & 0x00800080)) {
1025                        if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1026                                return (1);
1027                        }
1028                }
1029
1030        } else {
1031
1032                while (!(addr[0] & 0x00800080)) {       /* wait for error or finish */
1033                        if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1034                                return (1);
1035                        }
1036
1037                        if (addr[0] & 0x003A003A) {     /* check for error */
1038                                barf = addr[0] & 0x003A0000;
1039                                if (barf) {
1040                                        barf >>= 16;
1041                                } else {
1042                                        barf = addr[0] & 0x0000003A;
1043                                }
1044                                printf ("\nFlash write error at address %lx\n", (unsigned long) dest);
1045                                if (barf & 0x0002)
1046                                        printf ("Block locked, not erased.\n");
1047                                if (barf & 0x0010)
1048                                        printf ("Programming error.\n");
1049                                if (barf & 0x0008)
1050                                        printf ("Vpp Low error.\n");
1051                                return (2);
1052                        }
1053
1054
1055                }
1056
1057                return (0);
1058
1059        }
1060
1061#else
1062
1063static int write_short (flash_info_t * info, ulong dest, ushort data)
1064{
1065        vu_short *addr = (vu_short *) (info->start[0]);
1066        ulong start, barf;
1067        int flag;
1068
1069        /* Check if Flash is (sufficiently) erased */
1070        if ((*((vu_short *) dest) & data) != data) {
1071                return (2);
1072        }
1073
1074        /* Disable interrupts which might cause a timeout here */
1075        flag = disable_interrupts ();
1076
1077        if (info->flash_id < FLASH_AMD_COMP) {
1078                /* AMD stuff */
1079                addr[0x0555] = 0x00AA;
1080                addr[0x02AA] = 0x0055;
1081                addr[0x0555] = 0x00A0;
1082        } else {
1083                /* intel stuff */
1084                *addr = 0x00D0;
1085                *addr = 0x0040;
1086        }
1087        *((vu_short *) dest) = data;
1088
1089        /* re-enable interrupts if necessary */
1090        if (flag)
1091                enable_interrupts ();
1092
1093        /* data polling for D7 */
1094        start = get_timer (0);
1095
1096        if (info->flash_id < FLASH_AMD_COMP) {
1097                /* AMD stuff */
1098                while ((*((vu_short *) dest) & 0x0080) != (data & 0x0080)) {
1099                        if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
1100                                return (1);
1101                        }
1102                }
1103
1104        } else {
1105                /* intel stuff */
1106                while (!(addr[0] & 0x0080)) {   /* wait for error or finish */
1107                        if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT)
1108                                return (1);
1109                }
1110
1111                if (addr[0] & 0x003A) { /* check for error */
1112                        barf = addr[0] & 0x003A;
1113                        printf ("\nFlash write error at address %lx\n",
1114                                (unsigned long) dest);
1115                        if (barf & 0x0002)
1116                                printf ("Block locked, not erased.\n");
1117                        if (barf & 0x0010)
1118                                printf ("Programming error.\n");
1119                        if (barf & 0x0008)
1120                                printf ("Vpp Low error.\n");
1121                        return (2);
1122                }
1123                *addr = 0x00B0;
1124                *addr = 0x0070;
1125                while (!(addr[0] & 0x0080)) {   /* wait for error or finish */
1126                        if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT)
1127                                return (1);
1128                }
1129                *addr = 0x00FF;
1130        }
1131        return (0);
1132}
1133
1134#endif
1135/*-----------------------------------------------------------------------*/
1136
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