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

   1/*
   2 * (C) Copyright 2006
   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#include <asm/ppc440.h>
  38#include "yucca.h"
  39
  40#ifdef DEBUG
  41#define DEBUGF(x...) printf(x)
  42#else
  43#define DEBUGF(x...)
  44#endif                          /* DEBUG */
  45
  46flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
  47
  48/*
  49 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
  50 */
  51static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
  52        {0xfff00000, 0xfff80000, 0xe7c00001}, /* 0:boot from small flash */
  53        {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
  54        {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
  55        {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
  56        {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
  57        {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
  58        {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
  59        {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
  60        {0xfff00000, 0xfff80000, 0xe7c00001}, /* 8:boot from small flash */
  61};
  62
  63/*
  64 * include common flash code (for amcc boards)
  65 */
  66/*-----------------------------------------------------------------------
  67 * Functions
  68 */
  69static int write_word(flash_info_t * info, ulong dest, ulong data);
  70#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
  71static int write_word_1(flash_info_t * info, ulong dest, ulong data);
  72static int write_word_2(flash_info_t * info, ulong dest, ulong data);
  73static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
  74static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
  75static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
  76static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
  77#endif
  78
  79void flash_print_info(flash_info_t * info)
  80{
  81        int i;
  82        int k;
  83        int size;
  84        int erased;
  85        volatile unsigned long *flash;
  86
  87        if (info->flash_id == FLASH_UNKNOWN) {
  88                printf("missing or unknown FLASH type\n");
  89                return;
  90        }
  91
  92        switch (info->flash_id & FLASH_VENDMASK) {
  93                case FLASH_MAN_AMD:
  94                        printf("AMD ");
  95                        break;
  96                case FLASH_MAN_STM:
  97                        printf("STM ");
  98                        break;
  99                case FLASH_MAN_FUJ:
 100                        printf("FUJITSU ");
 101                        break;
 102                case FLASH_MAN_SST:
 103                        printf("SST ");
 104                        break;
 105                case FLASH_MAN_MX:
 106                        printf("MIXC ");
 107                        break;
 108                default:
 109                        printf("Unknown Vendor ");
 110                        break;
 111        }
 112
 113        switch (info->flash_id & FLASH_TYPEMASK) {
 114                case FLASH_AM040:
 115                        printf("AM29F040 (512 Kbit, uniform sector size)\n");
 116                        break;
 117                case FLASH_AM400B:
 118                        printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 119                        break;
 120                case FLASH_AM400T:
 121                        printf("AM29LV400T (4 Mbit, top boot sector)\n");
 122                        break;
 123                case FLASH_AM800B:
 124                        printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 125                        break;
 126                case FLASH_AM800T:
 127                        printf("AM29LV800T (8 Mbit, top boot sector)\n");
 128                        break;
 129                case FLASH_AMD016:
 130                        printf("AM29F016D (16 Mbit, uniform sector size)\n");
 131                        break;
 132                case FLASH_AM160B:
 133                        printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 134                        break;
 135                case FLASH_AM160T:
 136                        printf("AM29LV160T (16 Mbit, top boot sector)\n");
 137                        break;
 138                case FLASH_AM320B:
 139                        printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 140                        break;
 141                case FLASH_AM320T:
 142                        printf("AM29LV320T (32 Mbit, top boot sector)\n");
 143                        break;
 144                case FLASH_AM033C:
 145                        printf("AM29LV033C (32 Mbit, top boot sector)\n");
 146                        break;
 147                case FLASH_SST800A:
 148                        printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 149                        break;
 150                case FLASH_SST160A:
 151                        printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 152                        break;
 153                case FLASH_STMW320DT:
 154                        printf ("M29W320DT (32 M, top sector)\n");
 155                        break;
 156                case FLASH_MXLV320T:
 157                        printf ("MXLV320T (32 Mbit, top sector)\n");
 158                        break;
 159                default:
 160                        printf("Unknown Chip Type\n");
 161                        break;
 162        }
 163
 164        printf("  Size: %ld KB in %d Sectors\n",
 165                        info->size >> 10, info->sector_count);
 166
 167        printf("  Sector Start Addresses:");
 168        for (i = 0; i < info->sector_count; ++i) {
 169                /*
 170                 * Check if whole sector is erased
 171                 */
 172                if (i != (info->sector_count - 1))
 173                        size = info->start[i + 1] - info->start[i];
 174                else
 175                        size = info->start[0] + info->size - info->start[i];
 176                erased = 1;
 177                flash = (volatile unsigned long *)info->start[i];
 178                size = size >> 2;       /* divide by 4 for longword access */
 179                for (k = 0; k < size; k++) {
 180                        if (*flash++ != 0xffffffff) {
 181                                erased = 0;
 182                                break;
 183                        }
 184                }
 185
 186                if ((i % 5) == 0)
 187                        printf("\n   ");
 188                printf(" %08lX%s%s",
 189                                info->start[i],
 190                                erased ? " E" : "  ",
 191                                info->protect[i] ? "RO " : "   ");
 192        }
 193        printf("\n");
 194        return;
 195}
 196
 197
 198/*
 199 * The following code cannot be run from FLASH!
 200 */
 201#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 202static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 203{
 204        /* bit 0 used for big flash marking */
 205        if ((ulong)addr & 0x1)
 206                return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
 207        else
 208                return flash_get_size_1(addr, info);
 209}
 210
 211static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
 212#else
 213static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 214#endif
 215{
 216        short i;
 217        CONFIG_SYS_FLASH_WORD_SIZE value;
 218        ulong base = (ulong) addr;
 219        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 220
 221        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 222
 223        /* Write auto select command: read Manufacturer ID */
 224        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 225        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 226        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 227        udelay(1000);
 228
 229        value = addr2[0];
 230        DEBUGF("FLASH MANUFACT: %x\n", value);
 231
 232        switch (value) {
 233                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 234                        info->flash_id = FLASH_MAN_AMD;
 235                        break;
 236                case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 237                        info->flash_id = FLASH_MAN_FUJ;
 238                        break;
 239                case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 240                        info->flash_id = FLASH_MAN_SST;
 241                        break;
 242                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 243                        info->flash_id = FLASH_MAN_STM;
 244                        break;
 245                default:
 246                        info->flash_id = FLASH_UNKNOWN;
 247                        info->sector_count = 0;
 248                        info->size = 0;
 249                        return (0);     /* no or unknown flash  */
 250        }
 251
 252        value = addr2[1];       /* device ID            */
 253        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 254
 255        switch (value) {
 256                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
 257                        info->flash_id += FLASH_AM040;
 258                        info->sector_count = 8;
 259                        info->size = 0x0080000; /* => 512 ko */
 260                        break;
 261
 262                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
 263                        info->flash_id += FLASH_AM040;
 264                        info->sector_count = 8;
 265                        info->size = 0x0080000; /* => 512 ko */
 266                        break;
 267
 268                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
 269                        info->flash_id += FLASH_AM040;
 270                        info->sector_count = 8;
 271                        info->size = 0x0080000; /* => 512 ko */
 272                        break;
 273
 274                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
 275                        info->flash_id += FLASH_AMD016;
 276                        info->sector_count = 32;
 277                        info->size = 0x00200000;
 278                        break;          /* => 2 MB              */
 279
 280                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
 281                        info->flash_id += FLASH_AMDLV033C;
 282                        info->sector_count = 64;
 283                        info->size = 0x00400000;
 284                        break;          /* => 4 MB              */
 285
 286                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
 287                        info->flash_id += FLASH_AM400T;
 288                        info->sector_count = 11;
 289                        info->size = 0x00080000;
 290                        break;          /* => 0.5 MB            */
 291
 292                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
 293                        info->flash_id += FLASH_AM400B;
 294                        info->sector_count = 11;
 295                        info->size = 0x00080000;
 296                        break;          /* => 0.5 MB            */
 297
 298                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
 299                        info->flash_id += FLASH_AM800T;
 300                        info->sector_count = 19;
 301                        info->size = 0x00100000;
 302                        break;          /* => 1 MB              */
 303
 304                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
 305                        info->flash_id += FLASH_AM800B;
 306                        info->sector_count = 19;
 307                        info->size = 0x00100000;
 308                        break;          /* => 1 MB              */
 309
 310                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
 311                        info->flash_id += FLASH_AM160T;
 312                        info->sector_count = 35;
 313                        info->size = 0x00200000;
 314                        break;          /* => 2 MB              */
 315
 316                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
 317                        info->flash_id += FLASH_AM160B;
 318                        info->sector_count = 35;
 319                        info->size = 0x00200000;
 320                        break;          /* => 2 MB              */
 321
 322                default:
 323                        info->flash_id = FLASH_UNKNOWN;
 324                        return (0);     /* => no or unknown flash */
 325        }
 326
 327        /* set up sector start address table */
 328        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 329                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 330                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 331                for (i = 0; i < info->sector_count; i++)
 332                        info->start[i] = base + (i * 0x00010000);
 333        } else {
 334                if (info->flash_id & FLASH_BTYPE) {
 335                        /* set sector offsets for bottom boot block type        */
 336                        info->start[0] = base + 0x00000000;
 337                        info->start[1] = base + 0x00004000;
 338                        info->start[2] = base + 0x00006000;
 339                        info->start[3] = base + 0x00008000;
 340                        for (i = 4; i < info->sector_count; i++) {
 341                                info->start[i] =
 342                                        base + (i * 0x00010000) - 0x00030000;
 343                        }
 344                } else {
 345                        /* set sector offsets for top boot block type           */
 346                        i = info->sector_count - 1;
 347                        info->start[i--] = base + info->size - 0x00004000;
 348                        info->start[i--] = base + info->size - 0x00006000;
 349                        info->start[i--] = base + info->size - 0x00008000;
 350                        for (; i >= 0; i--) {
 351                                info->start[i] = base + i * 0x00010000;
 352                        }
 353                }
 354        }
 355
 356        /* check for protected sectors */
 357        for (i = 0; i < info->sector_count; i++) {
 358                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 359                /* D0 = 1 if protected */
 360                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 361
 362                /* For AMD29033C flash we need to resend the command of *
 363                 * reading flash protection for upper 8 Mb of flash     */
 364                if (i == 32) {
 365                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 366                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 367                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 368                }
 369
 370                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 371                        info->protect[i] = 0;
 372                else
 373                        info->protect[i] = addr2[2] & 1;
 374        }
 375
 376        /* issue bank reset to return to read mode */
 377        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 378
 379        return (info->size);
 380}
 381
 382static int wait_for_DQ7_1(flash_info_t * info, int sect)
 383{
 384        ulong start, now, last;
 385        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 386                (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 387
 388        start = get_timer(0);
 389        last = start;
 390        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 391                        (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 392                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 393                        printf("Timeout\n");
 394                        return -1;
 395                }
 396                /* show that we're waiting */
 397                if ((now - last) > 1000) {      /* every second */
 398                        putc('.');
 399                        last = now;
 400                }
 401        }
 402        return 0;
 403}
 404
 405#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 406int flash_erase(flash_info_t * info, int s_first, int s_last)
 407{
 408        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 409                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 410                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 411                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 412                return flash_erase_2(info, s_first, s_last);
 413        } else {
 414                return flash_erase_1(info, s_first, s_last);
 415        }
 416}
 417
 418static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
 419#else
 420int flash_erase(flash_info_t * info, int s_first, int s_last)
 421#endif
 422{
 423        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 424        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 425        int flag, prot, sect, l_sect;
 426        int i;
 427
 428        if ((s_first < 0) || (s_first > s_last)) {
 429                if (info->flash_id == FLASH_UNKNOWN)
 430                        printf("- missing\n");
 431                else
 432                        printf("- no sectors to erase\n");
 433                return 1;
 434        }
 435
 436        if (info->flash_id == FLASH_UNKNOWN) {
 437                printf("Can't erase unknown flash type - aborted\n");
 438                return 1;
 439        }
 440
 441        prot = 0;
 442        for (sect = s_first; sect <= s_last; ++sect) {
 443                if (info->protect[sect])
 444                        prot++;
 445        }
 446
 447        if (prot)
 448                printf("- Warning: %d protected sectors will not be erased!", prot);
 449
 450        printf("\n");
 451
 452        l_sect = -1;
 453
 454        /* Disable interrupts which might cause a timeout here */
 455        flag = disable_interrupts();
 456
 457        /* Start erase on unprotected sectors */
 458        for (sect = s_first; sect <= s_last; sect++) {
 459                if (info->protect[sect] == 0) { /* not protected */
 460                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 461
 462                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 463                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 464                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 465                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 466                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 467                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 468                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 469                                for (i = 0; i < 50; i++)
 470                                        udelay(1000);   /* wait 1 ms */
 471                        } else {
 472                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 473                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 474                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 475                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 476                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 477                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 478                        }
 479                        l_sect = sect;
 480                        /*
 481                         * Wait for each sector to complete, it's more
 482                         * reliable.  According to AMD Spec, you must
 483                         * issue all erase commands within a specified
 484                         * timeout.  This has been seen to fail, especially
 485                         * if printf()s are included (for debug)!!
 486                         */
 487                        wait_for_DQ7_1(info, sect);
 488                }
 489        }
 490
 491        /* re-enable interrupts if necessary */
 492        if (flag)
 493                enable_interrupts();
 494
 495        /* wait at least 80us - let's wait 1 ms */
 496        udelay(1000);
 497
 498        /* reset to read mode */
 499        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 500        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 501
 502        printf(" done\n");
 503        return 0;
 504}
 505
 506/*-----------------------------------------------------------------------
 507 * Copy memory to flash, returns:
 508 * 0 - OK
 509 * 1 - write timeout
 510 * 2 - Flash not erased
 511 */
 512int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 513{
 514        ulong cp, wp, data;
 515        int i, l, rc;
 516
 517        wp = (addr & ~3);       /* get lower word aligned address */
 518
 519        /*
 520         * handle unaligned start bytes
 521         */
 522        if ((l = addr - wp) != 0) {
 523                data = 0;
 524                for (i = 0, cp = wp; i < l; ++i, ++cp)
 525                        data = (data << 8) | (*(uchar *) cp);
 526
 527                for (; i < 4 && cnt > 0; ++i) {
 528                        data = (data << 8) | *src++;
 529                        --cnt;
 530                        ++cp;
 531                }
 532
 533                for (; cnt == 0 && i < 4; ++i, ++cp)
 534                        data = (data << 8) | (*(uchar *) cp);
 535
 536                if ((rc = write_word(info, wp, data)) != 0)
 537                        return (rc);
 538
 539                wp += 4;
 540        }
 541
 542        /*
 543         * handle word aligned part
 544         */
 545        while (cnt >= 4) {
 546                data = 0;
 547                for (i = 0; i < 4; ++i)
 548                        data = (data << 8) | *src++;
 549
 550                if ((rc = write_word(info, wp, data)) != 0)
 551                        return (rc);
 552
 553                wp += 4;
 554                cnt -= 4;
 555        }
 556
 557        if (cnt == 0)
 558                return (0);
 559
 560        /*
 561         * handle unaligned tail bytes
 562         */
 563        data = 0;
 564        for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 565                data = (data << 8) | *src++;
 566                --cnt;
 567        }
 568        for (; i < 4; ++i, ++cp)
 569                data = (data << 8) | (*(uchar *) cp);
 570
 571        return (write_word(info, wp, data));
 572}
 573
 574/*-----------------------------------------------------------------------
 575 * Copy memory to flash, returns:
 576 * 0 - OK
 577 * 1 - write timeout
 578 * 2 - Flash not erased
 579 */
 580#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 581static int write_word(flash_info_t * info, ulong dest, ulong data)
 582{
 583        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 584                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 585                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 586                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 587                return write_word_2(info, dest, data);
 588        } else {
 589                return write_word_1(info, dest, data);
 590        }
 591}
 592
 593static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 594#else
 595static int write_word(flash_info_t * info, ulong dest, ulong data)
 596#endif
 597{
 598        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 599        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 600        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 601        ulong start;
 602        int i, flag;
 603
 604        /* Check if Flash is (sufficiently) erased */
 605        if ((*((vu_long *)dest) & data) != data)
 606                return (2);
 607
 608        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 609                /* Disable interrupts which might cause a timeout here */
 610                flag = disable_interrupts();
 611
 612                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 613                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 614                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 615
 616                dest2[i] = data2[i];
 617
 618                /* re-enable interrupts if necessary */
 619                if (flag)
 620                        enable_interrupts();
 621
 622                /* data polling for D7 */
 623                start = get_timer(0);
 624                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 625                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 626
 627                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 628                                return (1);
 629                }
 630        }
 631
 632        return (0);
 633}
 634
 635#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 636
 637#undef  CONFIG_SYS_FLASH_WORD_SIZE
 638#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 639
 640/*
 641 * The following code cannot be run from FLASH!
 642 */
 643static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 644{
 645        short i;
 646        int n;
 647        CONFIG_SYS_FLASH_WORD_SIZE value;
 648        ulong base = (ulong) addr;
 649        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 650
 651        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 652
 653        /* issue bank reset to return to read mode */
 654        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 655        /* Write auto select command: read Manufacturer ID */
 656        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 657        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 658        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 659        udelay(1000);
 660
 661        value = addr2[0];
 662        DEBUGF("FLASH MANUFACT: %x\n", value);
 663
 664        switch (value) {
 665                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 666                        info->flash_id = FLASH_MAN_AMD;
 667                        break;
 668                case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 669                        info->flash_id = FLASH_MAN_FUJ;
 670                        break;
 671                case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 672                        info->flash_id = FLASH_MAN_SST;
 673                        break;
 674                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 675                        info->flash_id = FLASH_MAN_STM;
 676                        break;
 677                case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 678                        info->flash_id = FLASH_MAN_MX;
 679                        break;
 680                default:
 681                        info->flash_id = FLASH_UNKNOWN;
 682                        info->sector_count = 0;
 683                        info->size = 0;
 684                        return (0);     /* no or unknown flash  */
 685        }
 686
 687        value = addr2[1];       /* device ID            */
 688        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 689
 690        switch (value) {
 691                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 692                        info->flash_id += FLASH_AM320T;
 693                        info->sector_count = 71;
 694                        info->size = 0x00400000;
 695                        break;  /* => 4 MB      */
 696                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 697                        info->flash_id += FLASH_AM320B;
 698                        info->sector_count = 71;
 699                        info->size = 0x00400000;
 700                        break;  /* => 4 MB      */
 701                case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 702                        info->flash_id += FLASH_STMW320DT;
 703                        info->sector_count = 67;
 704                        info->size = 0x00400000;
 705                        break;  /* => 4 MB      */
 706                case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 707                        info->flash_id += FLASH_MXLV320T;
 708                        info->sector_count = 71;
 709                        info->size = 0x00400000;
 710                        break;  /* => 4 MB      */
 711                default:
 712                        info->flash_id = FLASH_UNKNOWN;
 713                        return (0);     /* => no or unknown flash */
 714        }
 715
 716        /* set up sector start address table */
 717        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 718                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 719                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 720                for (i = 0; i < info->sector_count; i++)
 721                        info->start[i] = base + (i * 0x00010000);
 722        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 723                /* set sector offsets for top boot block type           */
 724                base += info->size;
 725                i = info->sector_count;
 726                /*  1 x 16k boot sector */
 727                base -= 16 << 10;
 728                --i;
 729                info->start[i] = base;
 730                /*  2 x 8k  boot sectors */
 731                for (n = 0; n < 2; ++n) {
 732                        base -= 8 << 10;
 733                        --i;
 734                        info->start[i] = base;
 735                }
 736                /*  1 x 32k boot sector */
 737                base -= 32 << 10;
 738                --i;
 739                info->start[i] = base;
 740
 741                while (i > 0) {                 /* 64k regular sectors  */
 742                        base -= 64 << 10;
 743                        --i;
 744                        info->start[i] = base;
 745                }
 746        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 747                i = info->sector_count - 1;
 748                info->start[i--] = base + info->size - 0x00002000;
 749                info->start[i--] = base + info->size - 0x00004000;
 750                info->start[i--] = base + info->size - 0x00006000;
 751                info->start[i--] = base + info->size - 0x00008000;
 752                info->start[i--] = base + info->size - 0x0000a000;
 753                info->start[i--] = base + info->size - 0x0000c000;
 754                info->start[i--] = base + info->size - 0x0000e000;
 755                info->start[i--] = base + info->size - 0x00010000;
 756
 757                for (; i >= 0; i--)
 758                        info->start[i] = base + i * 0x00010000;
 759        } else {
 760                if (info->flash_id & FLASH_BTYPE) {
 761                        /* set sector offsets for bottom boot block type        */
 762                        info->start[0] = base + 0x00000000;
 763                        info->start[1] = base + 0x00004000;
 764                        info->start[2] = base + 0x00006000;
 765                        info->start[3] = base + 0x00008000;
 766
 767                        for (i = 4; i < info->sector_count; i++)
 768                                info->start[i] = base + (i * 0x00010000) - 0x00030000;
 769                } else {
 770                        /* set sector offsets for top boot block type           */
 771                        i = info->sector_count - 1;
 772                        info->start[i--] = base + info->size - 0x00004000;
 773                        info->start[i--] = base + info->size - 0x00006000;
 774                        info->start[i--] = base + info->size - 0x00008000;
 775
 776                        for (; i >= 0; i--)
 777                                info->start[i] = base + i * 0x00010000;
 778                }
 779        }
 780
 781        /* check for protected sectors */
 782        for (i = 0; i < info->sector_count; i++) {
 783                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 784                /* D0 = 1 if protected */
 785                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 786
 787                /* For AMD29033C flash we need to resend the command of *
 788                 * reading flash protection for upper 8 Mb of flash     */
 789                if (i == 32) {
 790                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 791                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 792                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 793                }
 794
 795                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 796                        info->protect[i] = 0;
 797                else
 798                        info->protect[i] = addr2[2] & 1;
 799        }
 800
 801        /* issue bank reset to return to read mode */
 802        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 803
 804        return (info->size);
 805}
 806
 807static int wait_for_DQ7_2(flash_info_t * info, int sect)
 808{
 809        ulong start, now, last;
 810        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 811                (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 812
 813        start = get_timer(0);
 814        last = start;
 815        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 816                        (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 817                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 818                        printf("Timeout\n");
 819                        return -1;
 820                }
 821                /* show that we're waiting */
 822                if ((now - last) > 1000) {      /* every second */
 823                        putc('.');
 824                        last = now;
 825                }
 826        }
 827        return 0;
 828}
 829
 830static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 831{
 832        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 833        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 834        int flag, prot, sect, l_sect;
 835        int i;
 836
 837        if ((s_first < 0) || (s_first > s_last)) {
 838                if (info->flash_id == FLASH_UNKNOWN)
 839                        printf("- missing\n");
 840                else
 841                        printf("- no sectors to erase\n");
 842                return 1;
 843        }
 844
 845        if (info->flash_id == FLASH_UNKNOWN) {
 846                printf("Can't erase unknown flash type - aborted\n");
 847                return 1;
 848        }
 849
 850        prot = 0;
 851        for (sect = s_first; sect <= s_last; ++sect) {
 852                if (info->protect[sect])
 853                        prot++;
 854        }
 855
 856        if (prot)
 857                printf("- Warning: %d protected sectors will not be erased!",   prot);
 858
 859        printf("\n");
 860
 861        l_sect = -1;
 862
 863        /* Disable interrupts which might cause a timeout here */
 864        flag = disable_interrupts();
 865
 866        /* Start erase on unprotected sectors */
 867        for (sect = s_first; sect <= s_last; sect++) {
 868                if (info->protect[sect] == 0) { /* not protected */
 869                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 870
 871                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 872                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 873                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 874                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 875                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 876                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 877                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 878                                for (i = 0; i < 50; i++)
 879                                        udelay(1000);   /* wait 1 ms */
 880                        } else {
 881                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 882                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 883                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 884                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 885                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 886                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 887                        }
 888                        l_sect = sect;
 889                        /*
 890                         * Wait for each sector to complete, it's more
 891                         * reliable.  According to AMD Spec, you must
 892                         * issue all erase commands within a specified
 893                         * timeout.  This has been seen to fail, especially
 894                         * if printf()s are included (for debug)!!
 895                         */
 896                        wait_for_DQ7_2(info, sect);
 897                }
 898        }
 899
 900        /* re-enable interrupts if necessary */
 901        if (flag)
 902                enable_interrupts();
 903
 904        /* wait at least 80us - let's wait 1 ms */
 905        udelay(1000);
 906
 907        /* reset to read mode */
 908        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 909        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 910
 911        printf(" done\n");
 912        return 0;
 913}
 914
 915static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 916{
 917        ulong *data_ptr = &data;
 918        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 919        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 920        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 921        ulong start;
 922        int i;
 923
 924        /* Check if Flash is (sufficiently) erased */
 925        if ((*((vu_long *)dest) & data) != data)
 926                return (2);
 927
 928        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 929                int flag;
 930
 931                /* Disable interrupts which might cause a timeout here */
 932                flag = disable_interrupts();
 933
 934                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 935                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 936                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 937
 938                dest2[i] = data2[i];
 939
 940                /* re-enable interrupts if necessary */
 941                if (flag)
 942                        enable_interrupts();
 943
 944                /* data polling for D7 */
 945                start = get_timer(0);
 946                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 947                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 948
 949                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 950                                return (1);
 951                }
 952        }
 953
 954        return (0);
 955}
 956#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 957
 958/*-----------------------------------------------------------------------
 959 * Functions
 960 */
 961static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 962static int write_word(flash_info_t * info, ulong dest, ulong data);
 963
 964/*-----------------------------------------------------------------------
 965 */
 966
 967unsigned long flash_init(void)
 968{
 969        unsigned long total_b = 0;
 970        unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 971        unsigned short index = 0;
 972        int i;
 973        unsigned long val;
 974        unsigned long ebc_boot_size;
 975        unsigned long boot_selection;
 976
 977        mfsdr(sdr_pstrp0, val);
 978        index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 979
 980        if ((index == 0xc) || (index == 8)) {
 981                /*
 982                 * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 983                 * Read Serial Device Strap Register1 in PPC440SPe
 984                 */
 985                mfsdr(SDR0_SDSTP1, val);
 986                boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 987                ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 988
 989                switch(boot_selection) {
 990                        case SDR0_SDSTP1_BOOT_SEL_EBC:
 991                                switch(ebc_boot_size) {
 992                                        case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 993                                                index = 3;
 994                                                break;
 995                                        case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 996                                                index = 0;
 997                                                break;
 998                                }
 999                                break;
1000

1001                        case SDR0_SDSTP1_BOOT_SEL_PCI:
1002                                index = 1;
1003                                break;
1004
1005                }
1006        } /*else if (index == 0) {*/
1007/*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
1008/*                      index = 8;*/ /* sram below op code flash -> new index 8*/
1009/*      }*/
1010
1011        DEBUGF("\n");
1012        DEBUGF("FLASH: Index: %d\n", index);
1013
1014        /* Init: no FLASHes known */
1015        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1016                flash_info[i].flash_id = FLASH_UNKNOWN;
1017                flash_info[i].sector_count = -1;
1018                flash_info[i].size = 0;
1019
1020                /* check whether the address is 0 */
1021                if (flash_addr_table[index][i] == 0)
1022                        continue;
1023
1024                /* call flash_get_size() to initialize sector address */
1025                size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1026                                &flash_info[i]);
1027
1028                flash_info[i].size = size_b[i];
1029
1030                if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1031                        printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1032                                        i, size_b[i], size_b[i] << 20);
1033                        flash_info[i].sector_count = -1;
1034                        flash_info[i].size = 0;
1035                }
1036
1037                /* Monitor protection ON by default */
1038                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
1039                                    CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
1040                                    &flash_info[i]);
1041#if defined(CONFIG_ENV_IS_IN_FLASH)
1042                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
1043                                    CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1044                                    &flash_info[i]);
1045#if defined(CONFIG_ENV_ADDR_REDUND)
1046                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
1047                                    CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
1048                                    &flash_info[i]);
1049#endif
1050#endif
1051                total_b += flash_info[i].size;
1052        }
1053
1054        return total_b;
1055}
1056