board/svm_sc8xx/flash.c

   1 /*
   2  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <mpc8xx.h>
   9
  10 #ifndef CONFIG_ENV_ADDR
  11 #define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
  12 #endif
  13
  14 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
  15
  16 /*-----------------------------------------------------------------------
  17  * Functions
  18  */
  19 static int write_word(flash_info_t *info, ulong dest, ulong data);
  20
  21 #ifdef CONFIG_BOOT_8B
  22 static int my_in_8(unsigned char *addr);
  23 static void my_out_8(unsigned char *addr, int val);
  24 #endif
  25 #ifdef CONFIG_BOOT_16B
  26 static int my_in_be16(unsigned short *addr);
  27 static void my_out_be16(unsigned short *addr, int val);
  28 #endif
  29 #ifdef CONFIG_BOOT_32B
  30 static unsigned my_in_be32(unsigned *addr);
  31 static void my_out_be32(unsigned *addr, int val);
  32 #endif
  33 /*-----------------------------------------------------------------------
  34  */
  35
  36 unsigned long flash_init(void)
  37 {
  38         volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
  39         volatile memctl8xx_t *memctl = &immap->im_memctl;
  40         unsigned long size_b0, size_b1;
  41         int i;
  42
  43         size_b0 = 0;
  44         size_b1 = 0;
  45         /* Init: no FLASHes known */
  46         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
  47                 flash_info[i].flash_id = FLASH_UNKNOWN;
  48
  49 #ifdef CONFIG_SYS_DOC_BASE
  50 #ifndef CONFIG_FEL8xx_AT
  51         /* 32k bytes */
  52         memctl->memc_or5 = (0xffff8000 | CONFIG_SYS_OR_TIMING_DOC);
  53         memctl->memc_br5 = CONFIG_SYS_DOC_BASE | 0x401;
  54 #else
  55         /* 32k bytes */
  56         memctl->memc_or3 = (0xffff8000 | CONFIG_SYS_OR_TIMING_DOC);
  57         memctl->memc_br3 = CONFIG_SYS_DOC_BASE | 0x401;
  58 #endif
  59 #endif
  60 #if defined(CONFIG_BOOT_8B)
  61         size_b0 = 0x80000;      /* 512 K */
  62
  63         flash_info[0].flash_id = FLASH_MAN_AMD | FLASH_AM040;
  64         flash_info[0].sector_count = 8;
  65         flash_info[0].size = 0x00080000;
  66
  67         /* set up sector start address table */
  68         for (i = 0; i < flash_info[0].sector_count; i++)
  69                 flash_info[0].start[i] = 0x40000000 + (i * 0x10000);
  70
  71         /* protect all sectors */
  72         for (i = 0; i < flash_info[0].sector_count; i++)
  73                 flash_info[0].protect[i] = 0x1;
  74
  75 #elif defined(CONFIG_BOOT_16B)
  76         size_b0 = 0x400000;     /* 4MB , assume AMD29LV320B */
  77
  78         flash_info[0].flash_id = FLASH_MAN_AMD | FLASH_AM320B;
  79         flash_info[0].sector_count = 67;
  80         flash_info[0].size = 0x00400000;
  81
  82         /* set up sector start address table */
  83         flash_info[0].start[0] = 0x40000000;
  84         flash_info[0].start[1] = 0x40000000 + 0x4000;
  85         flash_info[0].start[2] = 0x40000000 + 0x6000;
  86         flash_info[0].start[3] = 0x40000000 + 0x8000;
  87
  88         for (i = 4; i < flash_info[0].sector_count; i++) {
  89                 flash_info[0].start[i] =
  90                         0x40000000 + 0x10000 + ((i - 4) * 0x10000);
  91         }
  92
  93         /* protect all sectors */
  94         for (i = 0; i < flash_info[0].sector_count; i++)
  95                 flash_info[0].protect[i] = 0x1;
  96 #endif
  97
  98 #ifdef CONFIG_BOOT_32B
  99
 100         /* Static FLASH Bank configuration here - FIXME XXX */
 101         size_b0 = flash_get_size((vu_long *) FLASH_BASE0_PRELIM,
 102                                &flash_info[0]);
 103
 104         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
 105                 printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
 106                         size_b0, size_b0 << 20);
 107         }
 108
 109         size_b1 = flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
 110                                &flash_info[1]);
 111
 112         if (size_b1 > size_b0) {
 113                 printf("## ERROR: "
 114                         "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
 115                         size_b1, size_b1 << 20, size_b0, size_b0 << 20);
 116                 flash_info[0].flash_id = FLASH_UNKNOWN;
 117                 flash_info[1].flash_id = FLASH_UNKNOWN;
 118                 flash_info[0].sector_count = -1;
 119                 flash_info[1].sector_count = -1;
 120                 flash_info[0].size = 0;
 121                 flash_info[1].size = 0;
 122
 123                 return 0;
 124         }
 125
 126         /* Remap FLASH according to real size */
 127         memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH |
 128                                 (-size_b0 & OR_AM_MSK);
 129         memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) |
 130                                 BR_MS_GPCM | BR_V;
 131
 132         /* Re-do sizing to get full correct info */
 133         size_b0 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE,
 134                                 &flash_info[0]);
 135
 136         flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
 137
 138 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 139         /* monitor protection ON by default */
 140         flash_protect(FLAG_PROTECT_SET,
 141                 CONFIG_SYS_MONITOR_BASE,
 142                 CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
 143                 &flash_info[0]);
 144 #endif
 145
 146 #ifdef  CONFIG_ENV_IS_IN_FLASH
 147         /* ENV protection ON by default */
 148         flash_protect(FLAG_PROTECT_SET,
 149                 CONFIG_ENV_ADDR,
 150                 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
 151 #endif
 152
 153         if (size_b1) {
 154                 memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH |
 155                         (-size_b1 & 0xFFFF8000);
 156                 memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE +
 157                         size_b0) & BR_BA_MSK) | BR_MS_GPCM | BR_V;
 158
 159                 /* Re-do sizing to get full correct info */
 160                 size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE +
 161                                         size_b0), &flash_info[1]);
 162
 163                 flash_get_offsets(CONFIG_SYS_FLASH_BASE + size_b0,
 164                                   &flash_info[1]);
 165
 166 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
 167                 /* monitor protection ON by default */
 168                 flash_protect(FLAG_PROTECT_SET,
 169                               CONFIG_SYS_MONITOR_BASE,
 170                               CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
 171                               &flash_info[1]);
 172 #endif
 173
 174 #ifdef  CONFIG_ENV_IS_IN_FLASH
 175                 /* ENV protection ON by default */
 176                 flash_protect(FLAG_PROTECT_SET,
 177                               CONFIG_ENV_ADDR,
 178                               CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
 179                               &flash_info[1]);
 180 #endif
 181         } else {
 182                 memctl->memc_br1 = 0;   /* invalidate bank */
 183
 184                 flash_info[1].flash_id = FLASH_UNKNOWN;
 185                 flash_info[1].sector_count = -1;
 186         }
 187
 188         flash_info[0].size = size_b0;
 189         flash_info[1].size = size_b1;
 190
 191
 192 #endif /* CONFIG_BOOT_32B */
 193
 194         return size_b0 + size_b1;
 195 }
 196
 197
 198 void flash_print_info(flash_info_t *info)
 199 {
 200         int i;
 201
 202         if (info->flash_id == FLASH_UNKNOWN) {
 203                 printf("missing or unknown FLASH type\n");
 204                 return;
 205         }
 206
 207         switch (info->flash_id & FLASH_VENDMASK) {
 208         case FLASH_MAN_AMD:
 209                 printf("AMD ");
 210                 break;
 211         case FLASH_MAN_FUJ:
 212                 printf("FUJITSU ");
 213                 break;
 214         default:
 215                 printf("Unknown Vendor ");
 216                 break;
 217         }
 218
 219         switch (info->flash_id & FLASH_TYPEMASK) {
 220         case FLASH_AM400B:
 221                 printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 222                 break;
 223         case FLASH_AM400T:
 224                 printf("AM29LV400T (4 Mbit, top boot sector)\n");
 225                 break;
 226         case FLASH_AM800B:
 227                 printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 228                 break;
 229         case FLASH_AM800T:
 230                 printf("AM29LV800T (8 Mbit, top boot sector)\n");
 231                 break;
 232         case FLASH_AM160B:
 233                 printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 234                 break;
 235         case FLASH_AM160T:
 236                 printf("AM29LV160T (16 Mbit, top boot sector)\n");
 237                 break;
 238         case FLASH_AM320B:
 239                 printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 240                 break;
 241         case FLASH_AM320T:
 242                 printf("AM29LV320T (32 Mbit, top boot sector)\n");
 243                 break;
 244         default:
 245                 printf("Unknown Chip Type\n");
 246                 break;
 247         }
 248
 249         printf("  Size: %ld MB in %d Sectors\n",
 250                 info->size >> 20, info->sector_count);
 251
 252         printf("  Sector Start Addresses:");
 253         for (i = 0; i < info->sector_count; ++i) {
 254                 if ((i % 5) == 0)
 255                         printf("\n   ");
 256                 printf(" %08lX%s",
 257                        info->start[i], info->protect[i] ? " (RO)" : "     ");
 258         }
 259         printf("\n");
 260         return;
 261 }
 262
 263 /*
 264  * The following code cannot be run from FLASH!
 265  */
 266
 267 int flash_erase(flash_info_t *info, int s_first, int s_last)
 268 {
 269         vu_long *addr = (vu_long *) (info->start[0]);
 270         int flag, prot, sect, l_sect, in_mid, in_did;
 271         ulong start, now, last;
 272
 273         if ((s_first < 0) || (s_first > s_last)) {
 274                 if (info->flash_id == FLASH_UNKNOWN)
 275                         printf("- missing\n");
 276                 else
 277                         printf("- no sectors to erase\n");
 278
 279                 return 1;
 280         }
 281
 282         if ((info->flash_id == FLASH_UNKNOWN) ||
 283             (info->flash_id > FLASH_AMD_COMP)) {
 284                 printf("Can't erase unknown flash type %08lx - aborted\n",
 285                        info->flash_id);
 286                 return 1;
 287         }
 288
 289         prot = 0;
 290         for (sect = s_first; sect <= s_last; ++sect) {
 291                 if (info->protect[sect])
 292                         prot++;
 293         }
 294
 295         if (prot) {
 296                 printf("- Warning: %d protected sectors will not be erased!\n",
 297                         prot);
 298         } else {
 299                 printf("\n");
 300         }
 301
 302         l_sect = -1;
 303
 304         /* Disable interrupts which might cause a timeout here */
 305         flag = disable_interrupts();
 306
 307 #if defined(CONFIG_BOOT_8B)
 308         my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
 309         my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
 310         my_out_8((unsigned char *)((ulong)addr + 0x555), 0x90);
 311
 312         in_mid = my_in_8((unsigned char *)addr);
 313         in_did = my_in_8((unsigned char *)((ulong)addr + 1));
 314
 315         printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
 316
 317         my_out_8((unsigned char *)addr, 0xf0);
 318         udelay(1);
 319
 320         my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
 321         my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
 322         my_out_8((unsigned char *)((ulong)addr + 0x555), 0x80);
 323         my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
 324         my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
 325
 326         /* Start erase on unprotected sectors */
 327         for (sect = s_first; sect <= s_last; sect++) {
 328                 if (info->protect[sect] == 0) { /* not protected */
 329                         addr = (vu_long *) (info->start[sect]);
 330                         /*addr[0] = 0x00300030; */
 331                         my_out_8((unsigned char *)((ulong)addr), 0x30);
 332                         l_sect = sect;
 333                 }
 334         }
 335 #elif defined(CONFIG_BOOT_16B)
 336         my_out_be16((unsigned short *)((ulong)addr + (0xaaa)), 0xaa);
 337         my_out_be16((unsigned short *)((ulong)addr + (0x554)), 0x55);
 338         my_out_be16((unsigned short *)((ulong)addr + (0xaaa)), 0x90);
 339         in_mid = my_in_be16((unsigned short *)addr);
 340         in_did = my_in_be16((unsigned short *)((ulong)addr + 2));
 341         printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
 342         my_out_be16((unsigned short *)addr, 0xf0);
 343         udelay(1);
 344         my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
 345         my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
 346         my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0x80);
 347         my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
 348         my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
 349         /* Start erase on unprotected sectors */
 350         for (sect = s_first; sect <= s_last; sect++) {
 351                 if (info->protect[sect] == 0) { /* not protected */
 352                         addr = (vu_long *) (info->start[sect]);
 353                         my_out_be16((unsigned short *)((ulong)addr), 0x30);
 354                         l_sect = sect;
 355                 }
 356         }
 357
 358 #elif defined(CONFIG_BOOT_32B)
 359         my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
 360         my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
 361         my_out_be32((unsigned *)((ulong)addr + 0x1554), 0x90);
 362
 363         in_mid = my_in_be32((unsigned *)addr);
 364         in_did = my_in_be32((unsigned *)((ulong)addr + 4));
 365
 366         printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
 367
 368         my_out_be32((unsigned *) addr, 0xf0);
 369         udelay(1);
 370
 371         my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
 372         my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
 373         my_out_be32((unsigned *)((ulong)addr + 0x1554), 0x80);
 374         my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
 375         my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
 376
 377         /* Start erase on unprotected sectors */
 378         for (sect = s_first; sect <= s_last; sect++) {
 379                 if (info->protect[sect] == 0) { /* not protected */
 380                         addr = (vu_long *) (info->start[sect]);
 381                         my_out_be32((unsigned *)((ulong)addr), 0x00300030);
 382                         l_sect = sect;
 383                 }
 384         }
 385
 386 #else
 387 #error CONFIG_BOOT_(size)B missing.
 388 #endif
 389         /* re-enable interrupts if necessary */
 390         if (flag)
 391                 enable_interrupts();
 392
 393         /* wait at least 80us - let's wait 1 ms */
 394         udelay(1000);
 395
 396         /*
 397          * We wait for the last triggered sector
 398          */
 399         if (l_sect < 0)
 400                 goto DONE;
 401
 402         start = get_timer(0);
 403         last = start;
 404         addr = (vu_long *) (info->start[l_sect]);
 405 #if defined(CONFIG_BOOT_8B)
 406         while ((my_in_8((unsigned char *) addr) & 0x80) != 0x80)
 407 #elif defined(CONFIG_BOOT_16B)
 408         while ((my_in_be16((unsigned short *) addr) & 0x0080) != 0x0080)
 409 #elif defined(CONFIG_BOOT_32B)
 410         while ((my_in_be32((unsigned *) addr) & 0x00800080) != 0x00800080)
 411 #else
 412 #error CONFIG_BOOT_(size)B missing.
 413 #endif
 414         {
 415                 now = get_timer(start);
 416                 if (now > CONFIG_SYS_FLASH_ERASE_TOUT) {
 417                         printf("Timeout\n");
 418                         return 1;
 419                 }
 420                 /* show that we're waiting */
 421                 if ((now - last) > 1000) {      /* every second */
 422                         putc('.');
 423                         last = now;
 424                 }
 425         }
 426 DONE:
 427         /* reset to read mode */
 428         addr = (volatile unsigned long *) info->start[0];
 429
 430 #if defined(CONFIG_BOOT_8B)
 431         my_out_8((unsigned char *) addr, 0xf0);
 432 #elif defined(CONFIG_BOOT_16B)
 433         my_out_be16((unsigned short *) addr, 0x00f0);
 434 #elif defined(CONFIG_BOOT_32B)
 435         my_out_be32((unsigned *) addr, 0x00F000F0);     /* reset bank */
 436 #else
 437 #error CONFIG_BOOT_(size)B missing.
 438 #endif
 439         printf(" done\n");
 440         return 0;
 441 }
 442
 443 /*
 444  * Copy memory to flash, returns:
 445  * 0 - OK
 446  * 1 - write timeout
 447  * 2 - Flash not erased
 448  */
 449
 450 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 451 {
 452         ulong cp, wp, data;
 453         int i, l, rc;
 454
 455         wp = (addr & ~3);       /* get lower word aligned address */
 456
 457         /*
 458          * handle unaligned start bytes
 459          */
 460         l = addr - wp;
 461
 462         if (l != 0) {
 463                 data = 0;
 464                 for (i = 0, cp = wp; i < l; ++i, ++cp)
 465                         data = (data << 8) | (*(uchar *) cp);
 466
 467                 for (; i < 4 && cnt > 0; ++i) {
 468                         data = (data << 8) | *src++;
 469                         --cnt;
 470                         ++cp;
 471                 }
 472                 for (; cnt == 0 && i < 4; ++i, ++cp)
 473                         data = (data << 8) | (*(uchar *) cp);
 474
 475                 rc = write_word(info, wp, data);
 476
 477                 if (rc != 0)
 478                         return rc;
 479
 480                 wp += 4;
 481         }
 482
 483         /*
 484          * handle word aligned part
 485          */
 486         while (cnt >= 4) {
 487                 data = 0;
 488                 for (i = 0; i < 4; ++i)
 489                         data = (data << 8) | *src++;
 490
 491                 rc = write_word(info, wp, data);
 492
 493                 if (rc != 0)
 494                         return rc;
 495
 496                 wp += 4;
 497                 cnt -= 4;
 498         }
 499
 500         if (cnt == 0)
 501                 return 0;
 502
 503         /*
 504          * handle unaligned tail bytes
 505          */
 506         data = 0;
 507         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 508                 data = (data << 8) | *src++;
 509                 --cnt;
 510         }
 511         for (; i < 4; ++i, ++cp)
 512                 data = (data << 8) | (*(uchar *) cp);
 513
 514         return write_word(info, wp, data);
 515 }
 516
 517 /*
 518  * Write a word to Flash, returns:
 519  * 0 - OK
 520  * 1 - write timeout
 521  * 2 - Flash not erased
 522  */
 523 static int write_word(flash_info_t *info, ulong dest, ulong data)
 524 {
 525         ulong addr = (ulong) (info->start[0]);
 526         ulong start;
 527         int flag;
 528         ulong i;
 529         int data_short[2];
 530
 531         /* Check if Flash is (sufficiently) erased */
 532         if (((ulong)*(ulong *)dest & data) != data)
 533                 return 2;
 534
 535         /* Disable interrupts which might cause a timeout here */
 536         flag = disable_interrupts();
 537 #if defined(CONFIG_BOOT_8B)
 538 #ifdef DEBUG
 539         {
 540                 int in_mid, in_did;
 541
 542                 my_out_8((unsigned char *) (addr + 0x555), 0xaa);
 543                 my_out_8((unsigned char *) (addr + 0x2aa), 0x55);
 544                 my_out_8((unsigned char *) (addr + 0x555), 0x90);
 545
 546                 in_mid = my_in_8((unsigned char *) addr);
 547                 in_did = my_in_8((unsigned char *) (addr + 1));
 548
 549                 printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
 550
 551                 my_out_8((unsigned char *) addr, 0xf0);
 552                 udelay(1);
 553         }
 554 #endif
 555         {
 556                 int data_ch[4];
 557
 558                 data_ch[0] = (int) ((data >> 24) & 0xff);
 559                 data_ch[1] = (int) ((data >> 16) & 0xff);
 560                 data_ch[2] = (int) ((data >> 8) & 0xff);
 561                 data_ch[3] = (int) (data & 0xff);
 562
 563                 for (i = 0; i < 4; i++) {
 564                         my_out_8((unsigned char *) (addr + 0x555), 0xaa);
 565                         my_out_8((unsigned char *) (addr + 0x2aa), 0x55);
 566                         my_out_8((unsigned char *) (addr + 0x555), 0xa0);
 567                         my_out_8((unsigned char *) (dest + i), data_ch[i]);
 568
 569                         /* re-enable interrupts if necessary */
 570                         if (flag)
 571                                 enable_interrupts();
 572
 573                         start = get_timer(0);
 574                         while ((my_in_8((unsigned char *)(dest + i))) !=
 575                                (data_ch[i])) {
 576                                 if (get_timer(start) >
 577                                     CONFIG_SYS_FLASH_WRITE_TOUT) {
 578                                         return 1;
 579                                 }
 580                         }
 581                 }               /* for */
 582         }
 583 #elif defined(CONFIG_BOOT_16B)
 584         data_short[0] = (int) (data >> 16) & 0xffff;
 585         data_short[1] = (int) data & 0xffff;
 586         for (i = 0; i < 2; i++) {
 587                 my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
 588                 my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
 589                 my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xa0);
 590                 my_out_be16((unsigned short *)(dest + (i * 2)),
 591                             data_short[i]);
 592
 593                 /* re-enable interrupts if necessary */
 594                 if (flag)
 595                         enable_interrupts();
 596
 597                 start = get_timer(0);
 598                 while ((my_in_be16((unsigned short *)(dest + (i * 2)))) !=
 599                                                         (data_short[i])) {
 600                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 601                                 return 1;
 602                 }
 603         }
 604 #elif defined(CONFIG_BOOT_32B)
 605         addr[0x0555] = 0x00AA00AA;
 606         addr[0x02AA] = 0x00550055;
 607         addr[0x0555] = 0x00A000A0;
 608
 609         *((vu_long *)dest) = data;
 610
 611         /* re-enable interrupts if necessary */
 612         if (flag)
 613                 enable_interrupts();
 614
 615         /* data polling for D7 */
 616         start = get_timer(0);
 617         while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
 618                 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 619                         return 1;
 620         }
 621 #endif
 622         return 0;
 623 }
 624
 625 #ifdef CONFIG_BOOT_8B
 626 static int my_in_8(unsigned char *addr)
 627 {
 628         int ret;
 629         __asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
 630
 631         return ret;
 632 }
 633
 634 static void my_out_8(unsigned char *addr, int val)
 635 {
 636         __asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
 637 }
 638 #endif
 639 #ifdef CONFIG_BOOT_16B
 640 static int my_in_be16(unsigned short *addr)
 641 {
 642         int ret;
 643         __asm__ __volatile__("lhz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
 644
 645         return ret;
 646 }
 647
 648 static void my_out_be16(unsigned short *addr, int val)
 649 {
 650         __asm__ __volatile__("sth%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
 651 }
 652 #endif
 653 #ifdef CONFIG_BOOT_32B
 654 static unsigned my_in_be32(unsigned *addr)
 655 {
 656         unsigned ret;
 657         __asm__ __volatile__("lwz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
 658
 659         return ret;
 660 }
 661
 662 static void my_out_be32(unsigned *addr, int val)
 663 {
 664         __asm__ __volatile__("stw%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
 665 }
 666 #endif