LXR uboot/board/amcc/common/flash.c

   1/*
   2 * (C) Copyright 2004-2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6 * Add support for Am29F016D and dynamic switch setting.
   7 *
   8 * See file CREDITS for list of people who contributed to this
   9 * project.
  10 *
  11 * This program is free software; you can redistribute it and/or
  12 * modify it under the terms of the GNU General Public License as
  13 * published by the Free Software Foundation; either version 2 of
  14 * the License, or (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24 * MA 02111-1307 USA
  25 */
  26
  27/*
  28 * Modified 4/5/2001
  29 * Wait for completion of each sector erase command issued
  30 * 4/5/2001
  31 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  32 */
  33
  34#include <common.h>
  35#include <asm/ppc4xx.h>
  36#include <asm/processor.h>
  37
  38flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
  39
  40/*-----------------------------------------------------------------------
  41 * Functions
  42 */
  43static int write_word(flash_info_t * info, ulong dest, ulong data);
  44#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
  45static int write_word_1(flash_info_t * info, ulong dest, ulong data);
  46static int write_word_2(flash_info_t * info, ulong dest, ulong data);
  47static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
  48static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
  49static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
  50static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
  51#endif
  52
  53void flash_print_info(flash_info_t * info)
  54{
  55        int i;
  56        int k;
  57        int size;
  58        int erased;
  59        volatile unsigned long *flash;
  60
  61        if (info->flash_id == FLASH_UNKNOWN) {
  62                printf("missing or unknown FLASH type\n");
  63                return;
  64        }
  65
  66        switch (info->flash_id & FLASH_VENDMASK) {
  67        case FLASH_MAN_AMD:
  68                printf("AMD ");
  69                break;
  70        case FLASH_MAN_STM:
  71                printf("STM ");
  72                break;
  73        case FLASH_MAN_FUJ:
  74                printf("FUJITSU ");
  75                break;
  76        case FLASH_MAN_SST:
  77                printf("SST ");
  78                break;
  79        case FLASH_MAN_MX:
  80                printf ("MACRONIX ");
  81                break;
  82        default:
  83                printf("Unknown Vendor ");
  84                break;
  85        }
  86
  87        switch (info->flash_id & FLASH_TYPEMASK) {
  88        case FLASH_AM040:
  89                printf("AM29F040 (512 Kbit, uniform sector size)\n");
  90                break;
  91        case FLASH_AM400B:
  92                printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
  93                break;
  94        case FLASH_AM400T:
  95                printf("AM29LV400T (4 Mbit, top boot sector)\n");
  96                break;
  97        case FLASH_AM800B:
  98                printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
  99                break;
 100        case FLASH_AM800T:
 101                printf("AM29LV800T (8 Mbit, top boot sector)\n");
 102                break;
 103        case FLASH_AMD016:
 104                printf("AM29F016D (16 Mbit, uniform sector size)\n");
 105                break;
 106        case FLASH_AM160B:
 107                printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 108                break;
 109        case FLASH_AM160T:
 110                printf("AM29LV160T (16 Mbit, top boot sector)\n");
 111                break;
 112        case FLASH_AM320B:
 113                printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 114                break;
 115        case FLASH_AM320T:
 116                printf("AM29LV320T (32 Mbit, top boot sector)\n");
 117                break;
 118        case FLASH_AM033C:
 119                printf("AM29LV033C (32 Mbit, top boot sector)\n");
 120                break;
 121        case FLASH_SST800A:
 122                printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 123                break;
 124        case FLASH_SST160A:
 125                printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 126                break;
 127        case FLASH_STMW320DT:
 128                printf ("M29W320DT (32 M, top sector)\n");
 129                break;
 130        case FLASH_MXLV320T:
 131                printf ("MXLV320T (32 Mbit, top sector)\n");
 132                break;
 133        default:
 134                printf("Unknown Chip Type\n");
 135                break;
 136        }
 137
 138        printf("  Size: %ld KB in %d Sectors\n",
 139               info->size >> 10, info->sector_count);
 140
 141        printf("  Sector Start Addresses:");
 142        for (i = 0; i < info->sector_count; ++i) {
 143                /*
 144                 * Check if whole sector is erased
 145                 */
 146                if (i != (info->sector_count - 1))
 147                        size = info->start[i + 1] - info->start[i];
 148                else
 149                        size = info->start[0] + info->size - info->start[i];
 150                erased = 1;
 151                flash = (volatile unsigned long *)info->start[i];
 152                size = size >> 2;       /* divide by 4 for longword access */
 153                for (k = 0; k < size; k++) {
 154                        if (*flash++ != 0xffffffff) {
 155                                erased = 0;
 156                                break;
 157                        }
 158                }
 159
 160                if ((i % 5) == 0)
 161                        printf("\n   ");
 162                printf(" %08lX%s%s",
 163                       info->start[i],
 164                       erased ? " E" : "  ", info->protect[i] ? "RO " : "   ");
 165        }
 166        printf("\n");
 167        return;
 168}
 169
 170
 171/*
 172 * The following code cannot be run from FLASH!
 173 */
 174#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 175static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 176{
 177        /* bit 0 used for big flash marking */
 178        if ((ulong)addr & 0x1) {
 179                return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
 180        } else {
 181                return flash_get_size_1(addr, info);
 182        }
 183}
 184
 185static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
 186#else
 187static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 188#endif
 189{
 190        short i;
 191        CONFIG_SYS_FLASH_WORD_SIZE value;
 192        ulong base = (ulong) addr;
 193        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 194
 195        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 196
 197        /* Write auto select command: read Manufacturer ID */
 198        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 199        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 200        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 201        udelay(1000);
 202
 203        value = addr2[0];
 204        DEBUGF("FLASH MANUFACT: %x\n", value);
 205
 206        switch (value) {
 207        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 208                info->flash_id = FLASH_MAN_AMD;
 209                break;
 210        case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 211                info->flash_id = FLASH_MAN_FUJ;
 212                break;
 213        case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 214                info->flash_id = FLASH_MAN_SST;
 215                break;
 216        case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 217                info->flash_id = FLASH_MAN_STM;
 218                break;
 219        default:
 220                info->flash_id = FLASH_UNKNOWN;
 221                info->sector_count = 0;
 222                info->size = 0;
 223                return (0);     /* no or unknown flash  */
 224        }
 225
 226        value = addr2[1];       /* device ID */
 227        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 228
 229        switch (value) {
 230        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
 231                info->flash_id += FLASH_AM040;
 232                info->sector_count = 8;
 233                info->size = 0x0080000;         /* => 512 KiB */
 234                break;
 235
 236        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
 237                info->flash_id += FLASH_AM040;
 238                info->sector_count = 8;
 239                info->size = 0x0080000;         /* => 512 KiB */
 240                break;
 241
 242        case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
 243                info->flash_id += FLASH_AM040;
 244                info->sector_count = 8;
 245                info->size = 0x0080000;         /* => 512 KiB */
 246                break;
 247
 248        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
 249                info->flash_id += FLASH_AMD016;
 250                info->sector_count = 32;
 251                info->size = 0x00200000;        /* => 2 MiB */
 252                break;
 253
 254        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
 255                info->flash_id += FLASH_AMDLV033C;
 256                info->sector_count = 64;
 257                info->size = 0x00400000;        /* => 4 MiB */
 258                break;
 259
 260        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
 261                info->flash_id += FLASH_AM400T;
 262                info->sector_count = 11;
 263                info->size = 0x00080000;        /* => 512 KiB */
 264                break;
 265
 266        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
 267                info->flash_id += FLASH_AM400B;
 268                info->sector_count = 11;
 269                info->size = 0x00080000;        /* => 512 KiB */
 270                break;
 271
 272        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
 273                info->flash_id += FLASH_AM800T;
 274                info->sector_count = 19;
 275                info->size = 0x00100000;        /* => 1 MiB */
 276                break;
 277
 278        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
 279                info->flash_id += FLASH_AM800B;
 280                info->sector_count = 19;
 281                info->size = 0x00100000;        /* => 1 MiB */
 282                break;
 283
 284        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
 285                info->flash_id += FLASH_AM160T;
 286                info->sector_count = 35;
 287                info->size = 0x00200000;        /* => 2 MiB */
 288                break;
 289
 290        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
 291                info->flash_id += FLASH_AM160B;
 292                info->sector_count = 35;
 293                info->size = 0x00200000;        /* => 2 MiB */
 294                break;
 295
 296        default:
 297                info->flash_id = FLASH_UNKNOWN;
 298                return (0);     /* => no or unknown flash */
 299        }
 300
 301        /* set up sector start address table */
 302        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 303            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 304            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 305                for (i = 0; i < info->sector_count; i++)
 306                        info->start[i] = base + (i * 0x00010000);
 307        } else {
 308                if (info->flash_id & FLASH_BTYPE) {
 309                        /* set sector offsets for bottom boot block type */
 310                        info->start[0] = base + 0x00000000;
 311                        info->start[1] = base + 0x00004000;
 312                        info->start[2] = base + 0x00006000;
 313                        info->start[3] = base + 0x00008000;
 314                        for (i = 4; i < info->sector_count; i++) {
 315                                info->start[i] =
 316                                    base + (i * 0x00010000) - 0x00030000;
 317                        }
 318                } else {
 319                        /* set sector offsets for top boot block type */
 320                        i = info->sector_count - 1;
 321                        info->start[i--] = base + info->size - 0x00004000;
 322                        info->start[i--] = base + info->size - 0x00006000;
 323                        info->start[i--] = base + info->size - 0x00008000;
 324                        for (; i >= 0; i--) {
 325                                info->start[i] = base + i * 0x00010000;
 326                        }
 327                }
 328        }
 329
 330        /* check for protected sectors */
 331        for (i = 0; i < info->sector_count; i++) {
 332                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 333                /* D0 = 1 if protected */
 334                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 335
 336                /* For AMD29033C flash we need to resend the command of *
 337                 * reading flash protection for upper 8 Mb of flash     */
 338                if (i == 32) {
 339                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 340                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 341                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 342                }
 343
 344                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 345                        info->protect[i] = 0;
 346                else
 347                        info->protect[i] = addr2[2] & 1;
 348        }
 349
 350        /* issue bank reset to return to read mode */
 351        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 352
 353        return (info->size);
 354}
 355
 356static int wait_for_DQ7_1(flash_info_t * info, int sect)
 357{
 358        ulong start, now, last;
 359        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 360            (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 361
 362        start = get_timer(0);
 363        last = start;
 364        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 365               (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 366                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 367                        printf("Timeout\n");
 368                        return -1;
 369                }
 370                /* show that we're waiting */
 371                if ((now - last) > 1000) {      /* every second */
 372                        putc('.');
 373                        last = now;
 374                }
 375        }
 376        return 0;
 377}
 378
 379#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 380int flash_erase(flash_info_t * info, int s_first, int s_last)
 381{
 382        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 383            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 384            ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
 385            ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
 386                return flash_erase_2(info, s_first, s_last);
 387        } else {
 388                return flash_erase_1(info, s_first, s_last);
 389        }
 390}
 391
 392static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
 393#else
 394int flash_erase(flash_info_t * info, int s_first, int s_last)
 395#endif
 396{
 397        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 398        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 399        int flag, prot, sect;
 400        int i;
 401
 402        if ((s_first < 0) || (s_first > s_last)) {
 403                if (info->flash_id == FLASH_UNKNOWN) {
 404                        printf("- missing\n");
 405                } else {
 406                        printf("- no sectors to erase\n");
 407                }
 408                return 1;
 409        }
 410
 411        if (info->flash_id == FLASH_UNKNOWN) {
 412                printf("Can't erase unknown flash type - aborted\n");
 413                return 1;
 414        }
 415
 416        prot = 0;
 417        for (sect = s_first; sect <= s_last; ++sect) {
 418                if (info->protect[sect]) {
 419                        prot++;
 420                }
 421        }
 422
 423        if (prot) {
 424                printf("- Warning: %d protected sectors will not be erased!\n",
 425                       prot);
 426        } else {
 427                printf("\n");
 428        }
 429
 430        /* Disable interrupts which might cause a timeout here */
 431        flag = disable_interrupts();
 432
 433        /* Start erase on unprotected sectors */
 434        for (sect = s_first; sect <= s_last; sect++) {
 435                if (info->protect[sect] == 0) { /* not protected */
 436                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 437
 438                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 439                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 440                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 441                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 442                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 443                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 444                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 445                                for (i = 0; i < 50; i++)
 446                                        udelay(1000);   /* wait 1 ms */
 447                        } else {
 448                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 449                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 450                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 451                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 452                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 453                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 454                        }
 455                        /*
 456                         * Wait for each sector to complete, it's more
 457                         * reliable.  According to AMD Spec, you must
 458                         * issue all erase commands within a specified
 459                         * timeout.  This has been seen to fail, especially
 460                         * if printf()s are included (for debug)!!
 461                         */
 462                        wait_for_DQ7_1(info, sect);
 463                }
 464        }
 465
 466        /* re-enable interrupts if necessary */
 467        if (flag)
 468                enable_interrupts();
 469
 470        /* wait at least 80us - let's wait 1 ms */
 471        udelay(1000);
 472
 473        /* reset to read mode */
 474        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 475        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 476
 477        printf(" done\n");
 478        return 0;
 479}
 480
 481/*-----------------------------------------------------------------------
 482 * Copy memory to flash, returns:
 483 * 0 - OK
 484 * 1 - write timeout
 485 * 2 - Flash not erased
 486 */
 487int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 488{
 489        ulong cp, wp, data;
 490        int i, l, rc;
 491
 492        wp = (addr & ~3);       /* get lower word aligned address */
 493
 494        /*
 495         * handle unaligned start bytes
 496         */
 497        if ((l = addr - wp) != 0) {
 498                data = 0;
 499                for (i = 0, cp = wp; i < l; ++i, ++cp) {
 500                        data = (data << 8) | (*(uchar *) cp);
 501                }
 502                for (; i < 4 && cnt > 0; ++i) {
 503                        data = (data << 8) | *src++;
 504                        --cnt;
 505                        ++cp;
 506                }
 507                for (; cnt == 0 && i < 4; ++i, ++cp) {
 508                        data = (data << 8) | (*(uchar *) cp);
 509                }
 510
 511                if ((rc = write_word(info, wp, data)) != 0) {
 512                        return (rc);
 513                }
 514                wp += 4;
 515        }
 516
 517        /*
 518         * handle word aligned part
 519         */
 520        while (cnt >= 4) {
 521                data = 0;
 522                for (i = 0; i < 4; ++i) {
 523                        data = (data << 8) | *src++;
 524                }
 525                if ((rc = write_word(info, wp, data)) != 0) {
 526                        return (rc);
 527                }
 528                wp += 4;
 529                cnt -= 4;
 530        }
 531
 532        if (cnt == 0) {
 533                return (0);
 534        }
 535
 536        /*
 537         * handle unaligned tail bytes
 538         */
 539        data = 0;
 540        for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 541                data = (data << 8) | *src++;
 542                --cnt;
 543        }
 544        for (; i < 4; ++i, ++cp) {
 545                data = (data << 8) | (*(uchar *) cp);
 546        }
 547
 548        return (write_word(info, wp, data));
 549}
 550
 551/*-----------------------------------------------------------------------
 552 * Copy memory to flash, returns:
 553 * 0 - OK
 554 * 1 - write timeout
 555 * 2 - Flash not erased
 556 */
 557#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 558static int write_word(flash_info_t * info, ulong dest, ulong data)
 559{
 560        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 561            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 562            ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
 563            ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
 564                return write_word_2(info, dest, data);
 565        } else {
 566                return write_word_1(info, dest, data);
 567        }
 568}
 569
 570static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 571#else
 572static int write_word(flash_info_t * info, ulong dest, ulong data)
 573#endif
 574{
 575        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 576        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 577        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 578        ulong start;
 579        int i;
 580
 581        /* Check if Flash is (sufficiently) erased */
 582        if ((*((vu_long *)dest) & data) != data) {
 583                return (2);
 584        }
 585
 586        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 587                int flag;
 588
 589                /* Disable interrupts which might cause a timeout here */
 590                flag = disable_interrupts();
 591
 592                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 593                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 594                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 595
 596                dest2[i] = data2[i];
 597
 598                /* re-enable interrupts if necessary */
 599                if (flag)
 600                        enable_interrupts();
 601
 602                /* data polling for D7 */
 603                start = get_timer(0);
 604                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 605                       (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 606
 607                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
 608                                return (1);
 609                        }
 610                }
 611        }
 612
 613        return (0);
 614}
 615
 616#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 617
 618#undef  CONFIG_SYS_FLASH_WORD_SIZE
 619#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 620
 621/*
 622 * The following code cannot be run from FLASH!
 623 */
 624static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 625{
 626        short i;
 627        int n;
 628        CONFIG_SYS_FLASH_WORD_SIZE value;
 629        ulong base = (ulong) addr;
 630        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 631
 632        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 633
 634        /* Write auto select command: read Manufacturer ID */
 635        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 636        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 637        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 638        udelay(1000);
 639
 640        value = addr2[0];
 641        DEBUGF("FLASH MANUFACT: %x\n", value);
 642
 643        switch (value) {
 644        case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 645                info->flash_id = FLASH_MAN_AMD;
 646                break;
 647        case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 648                info->flash_id = FLASH_MAN_FUJ;
 649                break;
 650        case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 651                info->flash_id = FLASH_MAN_SST;
 652                break;
 653        case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 654                info->flash_id = FLASH_MAN_STM;
 655                break;
 656        case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 657                info->flash_id = FLASH_MAN_MX;
 658                break;
 659        default:
 660                info->flash_id = FLASH_UNKNOWN;
 661                info->sector_count = 0;
 662                info->size = 0;
 663                return (0);     /* no or unknown flash  */
 664        }
 665
 666        value = addr2[1];       /* device ID */
 667
 668        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 669
 670        switch (value) {
 671
 672        case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 673                info->flash_id += FLASH_AM320T;
 674                info->sector_count = 71;
 675                info->size = 0x00400000;  break;        /* => 4 MiB     */
 676
 677        case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 678                info->flash_id += FLASH_AM320B;
 679                info->sector_count = 71;
 680                info->size = 0x00400000;  break;        /* => 4 MiB     */
 681
 682        case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 683                info->flash_id += FLASH_STMW320DT;
 684                info->sector_count = 67;
 685                info->size = 0x00400000;  break;        /* => 4 MiB     */
 686
 687        case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 688                info->flash_id += FLASH_MXLV320T;
 689                info->sector_count = 71;
 690                info->size = 0x00400000;
 691                break;  /* => 4 MB      */
 692
 693        default:
 694                info->flash_id = FLASH_UNKNOWN;
 695                return (0);     /* => no or unknown flash */
 696        }
 697
 698        /* set up sector start address table */
 699        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 700            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 701            ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 702                for (i = 0; i < info->sector_count; i++)
 703                        info->start[i] = base + (i * 0x00010000);
 704        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 705                /* set sector offsets for top boot block type           */
 706                base += info->size;
 707                i = info->sector_count;
 708                /*  1 x 16k boot sector */
 709                base -= 16 << 10;
 710                --i;
 711                info->start[i] = base;
 712                /*  2 x 8k  boot sectors */
 713                for (n=0; n<2; ++n) {
 714                        base -= 8 << 10;
 715                        --i;
 716                        info->start[i] = base;
 717                }
 718                /*  1 x 32k boot sector */
 719                base -= 32 << 10;
 720                --i;
 721                info->start[i] = base;
 722
 723                while (i > 0) {                 /* 64k regular sectors  */
 724                        base -= 64 << 10;
 725                        --i;
 726                        info->start[i] = base;
 727                }
 728        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 729                i = info->sector_count - 1;
 730                info->start[i--] = base + info->size - 0x00002000;
 731                info->start[i--] = base + info->size - 0x00004000;
 732                info->start[i--] = base + info->size - 0x00006000;
 733                info->start[i--] = base + info->size - 0x00008000;
 734                info->start[i--] = base + info->size - 0x0000a000;
 735                info->start[i--] = base + info->size - 0x0000c000;
 736                info->start[i--] = base + info->size - 0x0000e000;
 737                info->start[i--] = base + info->size - 0x00010000;
 738
 739                for (; i >= 0; i--)
 740                        info->start[i] = base + i * 0x00010000;
 741        } else {
 742                if (info->flash_id & FLASH_BTYPE) {
 743                        /* set sector offsets for bottom boot block type */
 744                        info->start[0] = base + 0x00000000;
 745                        info->start[1] = base + 0x00002000;
 746                        info->start[2] = base + 0x00004000;
 747                        info->start[3] = base + 0x00006000;
 748                        info->start[4] = base + 0x00008000;
 749                        info->start[5] = base + 0x0000a000;
 750                        info->start[6] = base + 0x0000c000;
 751                        info->start[7] = base + 0x0000e000;
 752                        for (i = 8; i < info->sector_count; i++) {
 753                                info->start[i] =
 754                                    base + ((i-7) * 0x00010000);
 755                        }
 756                } else {
 757                        /* set sector offsets for top boot block type */
 758                        i = info->sector_count - 1;
 759                        info->start[i--] = base + info->size - 0x00002000;
 760                        info->start[i--] = base + info->size - 0x00004000;
 761                        info->start[i--] = base + info->size - 0x00006000;
 762                        info->start[i--] = base + info->size - 0x00008000;
 763                        info->start[i--] = base + info->size - 0x0000a000;
 764                        info->start[i--] = base + info->size - 0x0000c000;
 765                        info->start[i--] = base + info->size - 0x0000e000;
 766                        for (; i >= 0; i--) {
 767                                info->start[i] = base + i * 0x00010000;
 768                        }
 769                }
 770        }
 771
 772        /* check for protected sectors */
 773        for (i = 0; i < info->sector_count; i++) {
 774                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 775                /* D0 = 1 if protected */
 776                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 777
 778                /* For AMD29033C flash we need to resend the command of *
 779                 * reading flash protection for upper 8 Mb of flash     */
 780                if (i == 32) {
 781                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 782                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 783                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 784                }
 785
 786                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 787                        info->protect[i] = 0;
 788                else
 789                        info->protect[i] = addr2[2] & 1;
 790        }
 791
 792        /* issue bank reset to return to read mode */
 793        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 794
 795        return (info->size);
 796}
 797
 798static int wait_for_DQ7_2(flash_info_t * info, int sect)
 799{
 800        ulong start, now, last;
 801        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 802            (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 803
 804        start = get_timer(0);
 805        last = start;
 806        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 807               (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 808                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 809                        printf("Timeout\n");
 810                        return -1;
 811                }
 812                /* show that we're waiting */
 813                if ((now - last) > 1000) {      /* every second */
 814                        putc('.');
 815                        last = now;
 816                }
 817        }
 818        return 0;
 819}
 820
 821static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 822{
 823        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 824        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 825        int flag, prot, sect;
 826        int i;
 827
 828        if ((s_first < 0) || (s_first > s_last)) {
 829                if (info->flash_id == FLASH_UNKNOWN) {
 830                        printf("- missing\n");
 831                } else {
 832                        printf("- no sectors to erase\n");
 833                }
 834                return 1;
 835        }
 836
 837        if (info->flash_id == FLASH_UNKNOWN) {
 838                printf("Can't erase unknown flash type - aborted\n");
 839                return 1;
 840        }
 841
 842        prot = 0;
 843        for (sect = s_first; sect <= s_last; ++sect) {
 844                if (info->protect[sect]) {
 845                        prot++;
 846                }
 847        }
 848
 849        if (prot) {
 850                printf("- Warning: %d protected sectors will not be erased!\n",
 851                       prot);
 852        } else {
 853                printf("\n");
 854        }
 855
 856        /* Disable interrupts which might cause a timeout here */
 857        flag = disable_interrupts();
 858
 859        /* Start erase on unprotected sectors */
 860        for (sect = s_first; sect <= s_last; sect++) {
 861                if (info->protect[sect] == 0) { /* not protected */
 862                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 863
 864                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 865                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 866                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 867                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 868                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 869                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 870                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 871                                for (i = 0; i < 50; i++)
 872                                        udelay(1000);   /* wait 1 ms */
 873                        } else {
 874                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 875                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 876                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 877                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 878                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 879                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 880                        }
 881                        /*
 882                         * Wait for each sector to complete, it's more
 883                         * reliable.  According to AMD Spec, you must
 884                         * issue all erase commands within a specified
 885                         * timeout.  This has been seen to fail, especially
 886                         * if printf()s are included (for debug)!!
 887                         */
 888                        wait_for_DQ7_2(info, sect);
 889                }
 890        }
 891
 892        /* re-enable interrupts if necessary */
 893        if (flag)
 894                enable_interrupts();
 895
 896        /* wait at least 80us - let's wait 1 ms */
 897        udelay(1000);
 898
 899        /* reset to read mode */
 900        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 901        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 902
 903        printf(" done\n");
 904        return 0;
 905}
 906
 907static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 908{
 909        ulong *data_ptr = &data;
 910        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 911        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 912        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 913        ulong start;
 914        int i;
 915
 916        /* Check if Flash is (sufficiently) erased */
 917        if ((*((vu_long *)dest) & data) != data) {
 918                return (2);
 919        }
 920
 921        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 922                int flag;
 923
 924                /* Disable interrupts which might cause a timeout here */
 925                flag = disable_interrupts();
 926
 927                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 928                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 929                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 930
 931                dest2[i] = data2[i];
 932
 933                /* re-enable interrupts if necessary */
 934                if (flag)
 935                        enable_interrupts();
 936
 937                /* data polling for D7 */
 938                start = get_timer(0);
 939                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 940                       (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 941
 942                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
 943                                return (1);
 944                        }
 945                }
 946        }
 947
 948        return (0);
 949}
 950#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 951