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;
 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        /* Disable interrupts which might cause a timeout here */
 453        flag = disable_interrupts();
 454
 455        /* Start erase on unprotected sectors */
 456        for (sect = s_first; sect <= s_last; sect++) {
 457                if (info->protect[sect] == 0) { /* not protected */
 458                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 459
 460                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 461                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 462                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 463                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 464                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 465                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 466                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 467                                for (i = 0; i < 50; i++)
 468                                        udelay(1000);   /* wait 1 ms */
 469                        } else {
 470                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 471                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 472                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 473                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 474                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 475                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 476                        }
 477                        /*
 478                         * Wait for each sector to complete, it's more
 479                         * reliable.  According to AMD Spec, you must
 480                         * issue all erase commands within a specified
 481                         * timeout.  This has been seen to fail, especially
 482                         * if printf()s are included (for debug)!!
 483                         */
 484                        wait_for_DQ7_1(info, sect);
 485                }
 486        }
 487
 488        /* re-enable interrupts if necessary */
 489        if (flag)
 490                enable_interrupts();
 491
 492        /* wait at least 80us - let's wait 1 ms */
 493        udelay(1000);
 494
 495        /* reset to read mode */
 496        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 497        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 498
 499        printf(" done\n");
 500        return 0;
 501}
 502
 503/*-----------------------------------------------------------------------
 504 * Copy memory to flash, returns:
 505 * 0 - OK
 506 * 1 - write timeout
 507 * 2 - Flash not erased
 508 */
 509int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 510{
 511        ulong cp, wp, data;
 512        int i, l, rc;
 513
 514        wp = (addr & ~3);       /* get lower word aligned address */
 515
 516        /*
 517         * handle unaligned start bytes
 518         */
 519        if ((l = addr - wp) != 0) {
 520                data = 0;
 521                for (i = 0, cp = wp; i < l; ++i, ++cp)
 522                        data = (data << 8) | (*(uchar *) cp);
 523
 524                for (; i < 4 && cnt > 0; ++i) {
 525                        data = (data << 8) | *src++;
 526                        --cnt;
 527                        ++cp;
 528                }
 529
 530                for (; cnt == 0 && i < 4; ++i, ++cp)
 531                        data = (data << 8) | (*(uchar *) cp);
 532
 533                if ((rc = write_word(info, wp, data)) != 0)
 534                        return (rc);
 535
 536                wp += 4;
 537        }
 538
 539        /*
 540         * handle word aligned part
 541         */
 542        while (cnt >= 4) {
 543                data = 0;
 544                for (i = 0; i < 4; ++i)
 545                        data = (data << 8) | *src++;
 546
 547                if ((rc = write_word(info, wp, data)) != 0)
 548                        return (rc);
 549
 550                wp += 4;
 551                cnt -= 4;
 552        }
 553
 554        if (cnt == 0)
 555                return (0);
 556
 557        /*
 558         * handle unaligned tail bytes
 559         */
 560        data = 0;
 561        for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 562                data = (data << 8) | *src++;
 563                --cnt;
 564        }
 565        for (; i < 4; ++i, ++cp)
 566                data = (data << 8) | (*(uchar *) cp);
 567
 568        return (write_word(info, wp, data));
 569}
 570
 571/*-----------------------------------------------------------------------
 572 * Copy memory to flash, returns:
 573 * 0 - OK
 574 * 1 - write timeout
 575 * 2 - Flash not erased
 576 */
 577#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 578static int write_word(flash_info_t * info, ulong dest, ulong data)
 579{
 580        if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 581                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 582                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 583                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 584                return write_word_2(info, dest, data);
 585        } else {
 586                return write_word_1(info, dest, data);
 587        }
 588}
 589
 590static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 591#else
 592static int write_word(flash_info_t * info, ulong dest, ulong data)
 593#endif
 594{
 595        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 596        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 597        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 598        ulong start;
 599        int i, flag;
 600
 601        /* Check if Flash is (sufficiently) erased */
 602        if ((*((vu_long *)dest) & data) != data)
 603                return (2);
 604
 605        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 606                /* Disable interrupts which might cause a timeout here */
 607                flag = disable_interrupts();
 608
 609                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 610                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 611                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 612
 613                dest2[i] = data2[i];
 614
 615                /* re-enable interrupts if necessary */
 616                if (flag)
 617                        enable_interrupts();
 618
 619                /* data polling for D7 */
 620                start = get_timer(0);
 621                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 622                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 623
 624                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 625                                return (1);
 626                }
 627        }
 628
 629        return (0);
 630}
 631
 632#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 633
 634#undef  CONFIG_SYS_FLASH_WORD_SIZE
 635#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 636
 637/*
 638 * The following code cannot be run from FLASH!
 639 */
 640static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 641{
 642        short i;
 643        int n;
 644        CONFIG_SYS_FLASH_WORD_SIZE value;
 645        ulong base = (ulong) addr;
 646        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 647
 648        DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 649
 650        /* issue bank reset to return to read mode */
 651        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 652        /* Write auto select command: read Manufacturer ID */
 653        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 654        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 655        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 656        udelay(1000);
 657
 658        value = addr2[0];
 659        DEBUGF("FLASH MANUFACT: %x\n", value);
 660
 661        switch (value) {
 662                case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 663                        info->flash_id = FLASH_MAN_AMD;
 664                        break;
 665                case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 666                        info->flash_id = FLASH_MAN_FUJ;
 667                        break;
 668                case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 669                        info->flash_id = FLASH_MAN_SST;
 670                        break;
 671                case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 672                        info->flash_id = FLASH_MAN_STM;
 673                        break;
 674                case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 675                        info->flash_id = FLASH_MAN_MX;
 676                        break;
 677                default:
 678                        info->flash_id = FLASH_UNKNOWN;
 679                        info->sector_count = 0;
 680                        info->size = 0;
 681                        return (0);     /* no or unknown flash  */
 682        }
 683
 684        value = addr2[1];       /* device ID            */
 685        DEBUGF("\nFLASH DEVICEID: %x\n", value);
 686
 687        switch (value) {
 688                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 689                        info->flash_id += FLASH_AM320T;
 690                        info->sector_count = 71;
 691                        info->size = 0x00400000;
 692                        break;  /* => 4 MB      */
 693                case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 694                        info->flash_id += FLASH_AM320B;
 695                        info->sector_count = 71;
 696                        info->size = 0x00400000;
 697                        break;  /* => 4 MB      */
 698                case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 699                        info->flash_id += FLASH_STMW320DT;
 700                        info->sector_count = 67;
 701                        info->size = 0x00400000;
 702                        break;  /* => 4 MB      */
 703                case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 704                        info->flash_id += FLASH_MXLV320T;
 705                        info->sector_count = 71;
 706                        info->size = 0x00400000;
 707                        break;  /* => 4 MB      */
 708                default:
 709                        info->flash_id = FLASH_UNKNOWN;
 710                        return (0);     /* => no or unknown flash */
 711        }
 712
 713        /* set up sector start address table */
 714        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 715                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 716                        ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 717                for (i = 0; i < info->sector_count; i++)
 718                        info->start[i] = base + (i * 0x00010000);
 719        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 720                /* set sector offsets for top boot block type           */
 721                base += info->size;
 722                i = info->sector_count;
 723                /*  1 x 16k boot sector */
 724                base -= 16 << 10;
 725                --i;
 726                info->start[i] = base;
 727                /*  2 x 8k  boot sectors */
 728                for (n = 0; n < 2; ++n) {
 729                        base -= 8 << 10;
 730                        --i;
 731                        info->start[i] = base;
 732                }
 733                /*  1 x 32k boot sector */
 734                base -= 32 << 10;
 735                --i;
 736                info->start[i] = base;
 737
 738                while (i > 0) {                 /* 64k regular sectors  */
 739                        base -= 64 << 10;
 740                        --i;
 741                        info->start[i] = base;
 742                }
 743        } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 744                i = info->sector_count - 1;
 745                info->start[i--] = base + info->size - 0x00002000;
 746                info->start[i--] = base + info->size - 0x00004000;
 747                info->start[i--] = base + info->size - 0x00006000;
 748                info->start[i--] = base + info->size - 0x00008000;
 749                info->start[i--] = base + info->size - 0x0000a000;
 750                info->start[i--] = base + info->size - 0x0000c000;
 751                info->start[i--] = base + info->size - 0x0000e000;
 752                info->start[i--] = base + info->size - 0x00010000;
 753
 754                for (; i >= 0; i--)
 755                        info->start[i] = base + i * 0x00010000;
 756        } else {
 757                if (info->flash_id & FLASH_BTYPE) {
 758                        /* set sector offsets for bottom boot block type        */
 759                        info->start[0] = base + 0x00000000;
 760                        info->start[1] = base + 0x00004000;
 761                        info->start[2] = base + 0x00006000;
 762                        info->start[3] = base + 0x00008000;
 763
 764                        for (i = 4; i < info->sector_count; i++)
 765                                info->start[i] = base + (i * 0x00010000) - 0x00030000;
 766                } else {
 767                        /* set sector offsets for top boot block type           */
 768                        i = info->sector_count - 1;
 769                        info->start[i--] = base + info->size - 0x00004000;
 770                        info->start[i--] = base + info->size - 0x00006000;
 771                        info->start[i--] = base + info->size - 0x00008000;
 772
 773                        for (; i >= 0; i--)
 774                                info->start[i] = base + i * 0x00010000;
 775                }
 776        }
 777
 778        /* check for protected sectors */
 779        for (i = 0; i < info->sector_count; i++) {
 780                /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 781                /* D0 = 1 if protected */
 782                addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 783
 784                /* For AMD29033C flash we need to resend the command of *
 785                 * reading flash protection for upper 8 Mb of flash     */
 786                if (i == 32) {
 787                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 788                        addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 789                        addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 790                }
 791
 792                if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 793                        info->protect[i] = 0;
 794                else
 795                        info->protect[i] = addr2[2] & 1;
 796        }
 797
 798        /* issue bank reset to return to read mode */
 799        addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 800
 801        return (info->size);
 802}
 803
 804static int wait_for_DQ7_2(flash_info_t * info, int sect)
 805{
 806        ulong start, now, last;
 807        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 808                (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 809
 810        start = get_timer(0);
 811        last = start;
 812        while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 813                        (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 814                if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 815                        printf("Timeout\n");
 816                        return -1;
 817                }
 818                /* show that we're waiting */
 819                if ((now - last) > 1000) {      /* every second */
 820                        putc('.');
 821                        last = now;
 822                }
 823        }
 824        return 0;
 825}
 826
 827static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 828{
 829        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 830        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 831        int flag, prot, sect;
 832        int i;
 833
 834        if ((s_first < 0) || (s_first > s_last)) {
 835                if (info->flash_id == FLASH_UNKNOWN)
 836                        printf("- missing\n");
 837                else
 838                        printf("- no sectors to erase\n");
 839                return 1;
 840        }
 841
 842        if (info->flash_id == FLASH_UNKNOWN) {
 843                printf("Can't erase unknown flash type - aborted\n");
 844                return 1;
 845        }
 846
 847        prot = 0;
 848        for (sect = s_first; sect <= s_last; ++sect) {
 849                if (info->protect[sect])
 850                        prot++;
 851        }
 852
 853        if (prot)
 854                printf("- Warning: %d protected sectors will not be erased!",   prot);
 855
 856        printf("\n");
 857
 858        /* Disable interrupts which might cause a timeout here */
 859        flag = disable_interrupts();
 860
 861        /* Start erase on unprotected sectors */
 862        for (sect = s_first; sect <= s_last; sect++) {
 863                if (info->protect[sect] == 0) { /* not protected */
 864                        addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 865
 866                        if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 867                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 868                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 869                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 870                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 871                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 872                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 873                                for (i = 0; i < 50; i++)
 874                                        udelay(1000);   /* wait 1 ms */
 875                        } else {
 876                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 877                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 878                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 879                                addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 880                                addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 881                                addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 882                        }
 883                        /*
 884                         * Wait for each sector to complete, it's more
 885                         * reliable.  According to AMD Spec, you must
 886                         * issue all erase commands within a specified
 887                         * timeout.  This has been seen to fail, especially
 888                         * if printf()s are included (for debug)!!
 889                         */
 890                        wait_for_DQ7_2(info, sect);
 891                }
 892        }
 893
 894        /* re-enable interrupts if necessary */
 895        if (flag)
 896                enable_interrupts();
 897
 898        /* wait at least 80us - let's wait 1 ms */
 899        udelay(1000);
 900
 901        /* reset to read mode */
 902        addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 903        addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 904
 905        printf(" done\n");
 906        return 0;
 907}
 908
 909static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 910{
 911        ulong *data_ptr = &data;
 912        volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 913        volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 914        volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 915        ulong start;
 916        int i;
 917
 918        /* Check if Flash is (sufficiently) erased */
 919        if ((*((vu_long *)dest) & data) != data)
 920                return (2);
 921
 922        for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 923                int flag;
 924
 925                /* Disable interrupts which might cause a timeout here */
 926                flag = disable_interrupts();
 927
 928                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 929                addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 930                addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 931
 932                dest2[i] = data2[i];
 933
 934                /* re-enable interrupts if necessary */
 935                if (flag)
 936                        enable_interrupts();
 937
 938                /* data polling for D7 */
 939                start = get_timer(0);
 940                while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 941                                (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 942
 943                        if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 944                                return (1);
 945                }
 946        }
 947
 948        return (0);
 949}
 950#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 951
 952/*-----------------------------------------------------------------------
 953 * Functions
 954 */
 955static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 956static int write_word(flash_info_t * info, ulong dest, ulong data);
 957
 958/*-----------------------------------------------------------------------
 959 */
 960
 961unsigned long flash_init(void)
 962{
 963        unsigned long total_b = 0;
 964        unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 965        unsigned short index = 0;
 966        int i;
 967        unsigned long val;
 968        unsigned long ebc_boot_size;
 969        unsigned long boot_selection;
 970
 971        mfsdr(sdr_pstrp0, val);
 972        index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 973
 974        if ((index == 0xc) || (index == 8)) {
 975                /*
 976                 * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 977                 * Read Serial Device Strap Register1 in PPC440SPe
 978                 */
 979                mfsdr(SDR0_SDSTP1, val);
 980                boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 981                ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 982
 983                switch(boot_selection) {
 984                        case SDR0_SDSTP1_BOOT_SEL_EBC:
 985                                switch(ebc_boot_size) {
 986                                        case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 987                                                index = 3;
 988                                                break;
 989                                        case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 990                                                index = 0;
 991                                                break;
 992                                }
 993                                break;
 994
 995                        case SDR0_SDSTP1_BOOT_SEL_PCI:
 996                                index = 1;
 997                                break;
 998
 999                }
1000        } /*else if (index == 0) {*/

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