board/mpl/common/flash.c

   1 /*
   2  * (C) Copyright 2000, 2001
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Modified 4/5/2001
  26  * Wait for completion of each sector erase command issued
  27  * 4/5/2001
  28  * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  29  */
  30
  31 /*
  32  * Modified 3/7/2001
  33  * - adopted for pip405, Denis Peter, MPL AG Switzerland
  34  * TODO:
  35  * clean-up
  36  */
  37
  38 #include <common.h>
  39 #include <ppc4xx.h>
  40 #include <asm/processor.h>
  41 #ifdef CONFIG_PIP405
  42 #include "../pip405/pip405.h"
  43 #endif
  44 #ifdef CONFIG_MIP405
  45 #include "../mip405/mip405.h"
  46 #endif
  47 #include "common_util.h"
  48
  49 flash_info_t    flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips        */
  50 /*-----------------------------------------------------------------------
  51  * Functions
  52  */
  53 static ulong flash_get_size (vu_long *addr, flash_info_t *info);
  54 static int write_word (flash_info_t *info, ulong dest, ulong data);
  55 static void flash_get_offsets (ulong base, flash_info_t *info);
  56
  57 void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt);
  58
  59
  60 #ifdef CONFIG_ADCIOP
  61 #define ADDR0           0x0aa9
  62 #define ADDR1           0x0556
  63 #define FLASH_WORD_SIZE unsigned char
  64 #endif
  65
  66 #ifdef CONFIG_CPCI405
  67 #define ADDR0           0x5555
  68 #define ADDR1           0x2aaa
  69 #define FLASH_WORD_SIZE unsigned short
  70 #endif
  71
  72 #ifdef CONFIG_PIP405
  73 #define ADDR0           0x5555
  74 #define ADDR1           0x2aaa
  75 #define FLASH_WORD_SIZE unsigned short
  76 #endif
  77
  78 #ifdef CONFIG_MIP405
  79 #define ADDR0           0x5555
  80 #define ADDR1           0x2aaa
  81 #define FLASH_WORD_SIZE unsigned short
  82 #endif
  83
  84 #define FALSE           0
  85 #define TRUE            1
  86
  87 /*-----------------------------------------------------------------------
  88  */
  89
  90
  91 unsigned long flash_init (void)
  92 {
  93         unsigned long size_b0, size_b1;
  94         int i;
  95   unsigned long pbcr;
  96   unsigned long base_b0, base_b1;
  97   unsigned char rc;
  98
  99   rc=switch_cs(FALSE); /* map Flash High */
 100
 101         if(rc)
 102                 printf("(MPS Boot) ");
 103         else
 104                 printf("(Flash Boot) ");
 105         /* Init: no FLASHes known */
 106         for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
 107                 flash_info[i].flash_id = FLASH_UNKNOWN;
 108         }
 109
 110         /* Static FLASH Bank configuration here - FIXME XXX */
 111
 112         size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
 113
 114         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
 115                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
 116                         size_b0, size_b0<<20);
 117         }
 118         /* Only one bank */
 119         if (CFG_MAX_FLASH_BANKS == 1)
 120           {
 121             /* Setup offsets */
 122                         /*  flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]); */
 123             /* Monitor protection ON by default */
 124 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
 125                     flash_protect(FLAG_PROTECT_SET,
 126                                 CFG_MONITOR_BASE,
 127                                 CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
 128                                 &flash_info[0]);
 129 #endif
 130             size_b1 = 0 ;
 131             flash_info[0].size = size_b0;
 132           }
 133
 134         /* 2 banks */
 135         else
 136           {
 137             size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
 138
 139             /* Re-do sizing to get full correct info */
 140
 141             if (size_b1)
 142               {
 143                 mtdcr(ebccfga, pb0cr);
 144                 pbcr = mfdcr(ebccfgd);
 145                 mtdcr(ebccfga, pb0cr);
 146                 base_b1 = -size_b1;
 147                 pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
 148                 mtdcr(ebccfgd, pbcr);
 149                 /*          printf("pb1cr = %x\n", pbcr); */
 150               }
 151
 152             if (size_b0)
 153               {
 154                 mtdcr(ebccfga, pb1cr);
 155                 pbcr = mfdcr(ebccfgd);
 156                 mtdcr(ebccfga, pb1cr);
 157                 base_b0 = base_b1 - size_b0;
 158                 pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
 159                 mtdcr(ebccfgd, pbcr);
 160                 /*            printf("pb0cr = %x\n", pbcr); */
 161               }
 162
 163             size_b0 = flash_get_size((vu_long *)base_b0, &flash_info[0]);
 164
 165             flash_get_offsets (base_b0, &flash_info[0]);
 166
 167             /* monitor protection ON by default */
 168             (void)flash_protect(FLAG_PROTECT_SET,
 169                                 base_b0+size_b0-CFG_MONITOR_LEN,
 170                                 base_b0+size_b0-1,
 171                                 &flash_info[0]);
 172
 173             if (size_b1) {
 174               /* Re-do sizing to get full correct info */
 175               size_b1 = flash_get_size((vu_long *)base_b1, &flash_info[1]);
 176
 177               flash_get_offsets (base_b1, &flash_info[1]);
 178
 179               /* monitor protection ON by default */
 180               (void)flash_protect(FLAG_PROTECT_SET,
 181                                   base_b1+size_b1-CFG_MONITOR_LEN,
 182                                   base_b1+size_b1-1,
 183                                   &flash_info[1]);
 184               /* monitor protection OFF by default (one is enough) */
 185               (void)flash_protect(FLAG_PROTECT_CLEAR,
 186                                   base_b0+size_b0-CFG_MONITOR_LEN,
 187                                   base_b0+size_b0-1,
 188                                   &flash_info[0]);
 189             } else {
 190               flash_info[1].flash_id = FLASH_UNKNOWN;
 191               flash_info[1].sector_count = -1;
 192             }
 193
 194             flash_info[0].size = size_b0;
 195             flash_info[1].size = size_b1;
 196           }/* else 2 banks */
 197         switch_cs(rc); /* switch mode back */
 198         return (size_b0 + size_b1);
 199 }
 200
 201
 202 static void flash_get_offsets (ulong base, flash_info_t *info)
 203 {
 204         return;
 205 }
 206 #if 0
 207 /*-----------------------------------------------------------------------
 208  */
 209 static void flash_get_offsets (ulong base, flash_info_t *info)
 210 {
 211         int i;
 212
 213         /* set up sector start address table */
 214   if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 215             (info->flash_id  == FLASH_AM040)){
 216                 for (i = 0; i < info->sector_count; i++)
 217                         info->start[i] = base + (i * 0x00010000);
 218   }
 219   else {
 220                 if (info->flash_id & FLASH_BTYPE) {
 221                 /* set sector offsets for bottom boot block type        */
 222                 info->start[0] = base + 0x00000000;
 223                 info->start[1] = base + 0x00004000;
 224                 info->start[2] = base + 0x00006000;
 225                 info->start[3] = base + 0x00008000;
 226                 for (i = 4; i < info->sector_count; i++) {
 227                         info->start[i] = base + (i * 0x00010000) - 0x00030000;
 228                 }
 229             } else {
 230                 /* set sector offsets for top boot block type           */
 231                 i = info->sector_count - 1;
 232                 info->start[i--] = base + info->size - 0x00004000;
 233                 info->start[i--] = base + info->size - 0x00006000;
 234                 info->start[i--] = base + info->size - 0x00008000;
 235                 for (; i >= 0; i--) {
 236                         info->start[i] = base + i * 0x00010000;
 237                 }
 238             }
 239         }
 240 }
 241
 242 #endif
 243 /*-----------------------------------------------------------------------
 244  */
 245 void flash_print_info  (flash_info_t *info)
 246 {
 247         int i;
 248     int k;
 249         int size;
 250     int erased;
 251     volatile unsigned long *flash;
 252
 253         if (info->flash_id == FLASH_UNKNOWN) {
 254                 printf ("missing or unknown FLASH type\n");
 255                 return;
 256         }
 257
 258         switch (info->flash_id & FLASH_VENDMASK) {
 259         case FLASH_MAN_AMD:     printf ("AMD ");                break;
 260         case FLASH_MAN_FUJ:     printf ("FUJITSU ");            break;
 261         case FLASH_MAN_SST:     printf ("SST ");                break;
 262         case FLASH_MAN_INTEL:   printf ("Intel ");              break;
 263         default:                printf ("Unknown Vendor ");     break;
 264         }
 265
 266         switch (info->flash_id & FLASH_TYPEMASK) {
 267         case FLASH_AM040:       printf ("AM29F040 (512 Kbit, uniform sector size)\n");
 268                                 break;
 269         case FLASH_AM400B:      printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
 270                                 break;
 271         case FLASH_AM400T:      printf ("AM29LV400T (4 Mbit, top boot sector)\n");
 272                                 break;
 273         case FLASH_AM800B:      printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
 274                                 break;
 275         case FLASH_AM800T:      printf ("AM29LV800T (8 Mbit, top boot sector)\n");
 276                                 break;
 277         case FLASH_AM160B:      printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
 278                                 break;
 279         case FLASH_AM160T:      printf ("AM29LV160T (16 Mbit, top boot sector)\n");
 280                                 break;
 281         case FLASH_AM320B:      printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
 282                                 break;
 283         case FLASH_AM320T:      printf ("AM29LV320T (32 Mbit, top boot sector)\n");
 284                                 break;
 285         case FLASH_SST800A:     printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 286                                 break;
 287         case FLASH_SST160A:     printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 288                                 break;
 289         case FLASH_INTEL320T:   printf ("TE28F320C3 (32 Mbit, top sector size)\n");
 290                                 break;
 291         default:                printf ("Unknown Chip Type\n");
 292                                 break;
 293         }
 294
 295         printf ("  Size: %ld KB in %d Sectors\n",
 296                 info->size >> 10, info->sector_count);
 297
 298         printf ("  Sector Start Addresses:");
 299         for (i=0; i<info->sector_count; ++i) {
 300         /*
 301      * Check if whole sector is erased
 302      */
 303                 if (i != (info->sector_count-1))
 304         size = info->start[i+1] - info->start[i];
 305                 else
 306       size = info->start[0] + info->size - info->start[i];
 307     erased = 1;
 308     flash = (volatile unsigned long *)info->start[i];
 309     size = size >> 2;        /* divide by 4 for longword access */
 310     for (k=0; k<size; k++)
 311     {
 312         if (*flash++ != 0xffffffff)
 313                         {
 314                                 erased = 0;
 315                                 break;
 316                         }
 317                 }
 318                 if ((i % 5) == 0)
 319                         printf ("\n   ");
 320 #if 0 /* test-only */
 321                 printf (" %08lX%s",
 322                         info->start[i],
 323                         info->protect[i] ? " (RO)" : "     "
 324 #else
 325                 printf (" %08lX%s%s",
 326                         info->start[i],
 327                         erased ? " E" : "  ",
 328                         info->protect[i] ? "RO " : "   "
 329 #endif
 330                 );
 331         }
 332         printf ("\n");
 333
 334 }
 335
 336 /*-----------------------------------------------------------------------
 337  */
 338
 339
 340 /*-----------------------------------------------------------------------
 341  */
 342
 343 /*
 344  * The following code cannot be run from FLASH!
 345  */
 346 static ulong flash_get_size (vu_long *addr, flash_info_t *info)
 347 {
 348         short i;
 349         FLASH_WORD_SIZE value;
 350         ulong base = (ulong)addr;
 351         volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
 352
 353         /* Write auto select command: read Manufacturer ID */
 354         addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 355         addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 356         addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
 357
 358         value = addr2[0];
 359         /*      printf("flash_get_size value: %x\n",value); */
 360         switch (value) {
 361         case (FLASH_WORD_SIZE)AMD_MANUFACT:
 362                 info->flash_id = FLASH_MAN_AMD;
 363                 break;
 364         case (FLASH_WORD_SIZE)FUJ_MANUFACT:
 365                 info->flash_id = FLASH_MAN_FUJ;
 366                 break;
 367         case (FLASH_WORD_SIZE)INTEL_MANUFACT:
 368                 info->flash_id = FLASH_MAN_INTEL;
 369                 break;
 370         case (FLASH_WORD_SIZE)SST_MANUFACT:
 371                 info->flash_id = FLASH_MAN_SST;
 372                 break;
 373         default:
 374                 info->flash_id = FLASH_UNKNOWN;
 375                 info->sector_count = 0;
 376                 info->size = 0;
 377                 return (0);                     /* no or unknown flash  */
 378         }
 379         value = addr2[1];                       /* device ID            */
 380         /*      printf("Device value %x\n",value); */
 381         switch (value) {
 382         case (FLASH_WORD_SIZE)AMD_ID_F040B:
 383                 info->flash_id += FLASH_AM040;
 384                 info->sector_count = 8;
 385                 info->size = 0x0080000; /* => 512 ko */
 386                 break;
 387         case (FLASH_WORD_SIZE)AMD_ID_LV400T:
 388                 info->flash_id += FLASH_AM400T;
 389                 info->sector_count = 11;
 390                 info->size = 0x00080000;
 391                 break;                          /* => 0.5 MB            */
 392
 393         case (FLASH_WORD_SIZE)AMD_ID_LV400B:
 394                 info->flash_id += FLASH_AM400B;
 395                 info->sector_count = 11;
 396                 info->size = 0x00080000;
 397                 break;                          /* => 0.5 MB            */
 398
 399         case (FLASH_WORD_SIZE)AMD_ID_LV800T:
 400                 info->flash_id += FLASH_AM800T;
 401                 info->sector_count = 19;
 402                 info->size = 0x00100000;
 403                 break;                          /* => 1 MB              */
 404
 405         case (FLASH_WORD_SIZE)AMD_ID_LV800B:
 406                 info->flash_id += FLASH_AM800B;
 407                 info->sector_count = 19;
 408                 info->size = 0x00100000;
 409                 break;                          /* => 1 MB              */
 410
 411         case (FLASH_WORD_SIZE)AMD_ID_LV160T:
 412                 info->flash_id += FLASH_AM160T;
 413                 info->sector_count = 35;
 414                 info->size = 0x00200000;
 415                 break;                          /* => 2 MB              */
 416
 417         case (FLASH_WORD_SIZE)AMD_ID_LV160B:
 418                 info->flash_id += FLASH_AM160B;
 419                 info->sector_count = 35;
 420                 info->size = 0x00200000;
 421                 break;                          /* => 2 MB              */
 422 #if 0   /* enable when device IDs are available */
 423         case (FLASH_WORD_SIZE)AMD_ID_LV320T:
 424                 info->flash_id += FLASH_AM320T;
 425                 info->sector_count = 67;
 426                 info->size = 0x00400000;
 427                 break;                          /* => 4 MB              */
 428
 429         case (FLASH_WORD_SIZE)AMD_ID_LV320B:
 430                 info->flash_id += FLASH_AM320B;
 431                 info->sector_count = 67;
 432                 info->size = 0x00400000;
 433                 break;                          /* => 4 MB              */
 434 #endif
 435         case (FLASH_WORD_SIZE)SST_ID_xF800A:
 436                 info->flash_id += FLASH_SST800A;
 437                 info->sector_count = 16;
 438                 info->size = 0x00100000;
 439                 break;                          /* => 1 MB              */
 440         case (FLASH_WORD_SIZE)INTEL_ID_28F320C3T:
 441                 info->flash_id += FLASH_INTEL320T;
 442                 info->sector_count = 71;
 443                 info->size = 0x00400000;
 444                 break;                          /* => 4 MB              */
 445
 446
 447         case (FLASH_WORD_SIZE)SST_ID_xF160A:
 448                 info->flash_id += FLASH_SST160A;
 449                 info->sector_count = 32;
 450                 info->size = 0x00200000;
 451                 break;                          /* => 2 MB              */
 452
 453         default:
 454                 info->flash_id = FLASH_UNKNOWN;
 455                 return (0);                     /* => no or unknown flash */
 456
 457         }
 458
 459         /* set up sector start address table */
 460   if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 461             (info->flash_id  == FLASH_AM040)){
 462                 for (i = 0; i < info->sector_count; i++)
 463                         info->start[i] = base + (i * 0x00010000);
 464   } else {
 465                 if (info->flash_id & FLASH_BTYPE) {
 466                 /* set sector offsets for bottom boot block type        */
 467                 info->start[0] = base + 0x00000000;
 468                 info->start[1] = base + 0x00004000;
 469                 info->start[2] = base + 0x00006000;
 470                 info->start[3] = base + 0x00008000;
 471                 for (i = 4; i < info->sector_count; i++)
 472                         info->start[i] = base + (i * 0x00010000) - 0x00030000;
 473           }
 474           else {
 475                         /* set sector offsets for top boot block type           */
 476                         i = info->sector_count - 1;
 477                         if(info->sector_count==71) {
 478
 479                                 info->start[i--] = base + info->size - 0x00002000;
 480                                 info->start[i--] = base + info->size - 0x00004000;
 481                                 info->start[i--] = base + info->size - 0x00006000;
 482                                 info->start[i--] = base + info->size - 0x00008000;
 483                                 info->start[i--] = base + info->size - 0x0000A000;
 484                                 info->start[i--] = base + info->size - 0x0000C000;
 485                                 info->start[i--] = base + info->size - 0x0000E000;
 486                                 for (; i >= 0; i--)
 487                                         info->start[i] = base + i * 0x000010000;
 488                         }
 489                         else {
 490                                 info->start[i--] = base + info->size - 0x00004000;
 491                                 info->start[i--] = base + info->size - 0x00006000;
 492                                 info->start[i--] = base + info->size - 0x00008000;
 493                                 for (; i >= 0; i--)
 494                                         info->start[i] = base + i * 0x00010000;
 495                         }
 496                 }
 497         }
 498
 499         /* check for protected sectors */
 500         for (i = 0; i < info->sector_count; i++) {
 501                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 502                 /* D0 = 1 if protected */
 503                 addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
 504         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
 505         info->protect[i] = 0;
 506       else
 507         info->protect[i] = addr2[2] & 1;
 508         }
 509
 510         /*
 511          * Prevent writes to uninitialized FLASH.
 512          */
 513         if (info->flash_id != FLASH_UNKNOWN) {
 514 #if 0 /* test-only */
 515 #ifdef CONFIG_ADCIOP
 516                 addr2 = (volatile unsigned char *)info->start[0];
 517                 addr2[ADDR0] = 0xAA;
 518                 addr2[ADDR1] = 0x55;
 519                 addr2[ADDR0] = 0xF0;  /* reset bank */
 520 #else
 521                 addr2 = (FLASH_WORD_SIZE *)info->start[0];
 522                 *addr2 = (FLASH_WORD_SIZE)0x00F000F0;   /* reset bank */
 523 #endif
 524 #else /* test-only */
 525                 addr2 = (FLASH_WORD_SIZE *)info->start[0];
 526                 *addr2 = (FLASH_WORD_SIZE)0x00F000F0;   /* reset bank */
 527 #endif /* test-only */
 528         }
 529         return (info->size);
 530 }
 531
 532 int wait_for_DQ7(flash_info_t *info, int sect)
 533 {
 534         ulong start, now, last;
 535         volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
 536
 537         start = get_timer (0);
 538     last  = start;
 539     while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
 540         if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
 541             printf ("Timeout\n");
 542             return -1;
 543         }
 544         /* show that we're waiting */
 545         if ((now - last) > 1000) {  /* every second */
 546                                 putc ('.');
 547             last = now;
 548         }
 549     }
 550         return 0;
 551 }
 552
 553 int intel_wait_for_DQ7(flash_info_t *info, int sect)
 554 {
 555         ulong start, now, last;
 556         volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
 557
 558                 start = get_timer (0);
 559     last  = start;
 560     while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
 561         if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
 562             printf ("Timeout\n");
 563             return -1;
 564         }
 565         /* show that we're waiting */
 566         if ((now - last) > 1000) {  /* every second */
 567                                 putc ('.');
 568             last = now;
 569         }
 570     }
 571     addr[0]=(FLASH_WORD_SIZE)0x00500050;
 572         return 0;
 573 }
 574
 575 /*-----------------------------------------------------------------------
 576  */
 577
 578 int     flash_erase (flash_info_t *info, int s_first, int s_last)
 579 {
 580         volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
 581         volatile FLASH_WORD_SIZE *addr2;
 582         int flag, prot, sect, l_sect;
 583         int i;
 584
 585
 586         if ((s_first < 0) || (s_first > s_last)) {
 587                 if (info->flash_id == FLASH_UNKNOWN) {
 588                         printf ("- missing\n");
 589                 } else {
 590                         printf ("- no sectors to erase\n");
 591                 }
 592                 return 1;
 593         }
 594
 595         if (info->flash_id == FLASH_UNKNOWN) {
 596                 printf ("Can't erase unknown flash type - aborted\n");
 597                 return 1;
 598         }
 599
 600         prot = 0;
 601         for (sect=s_first; sect<=s_last; ++sect) {
 602                 if (info->protect[sect]) {
 603                         prot++;
 604                 }
 605         }
 606
 607         if (prot) {
 608                 printf ("- Warning: %d protected sectors will not be erased!\n",
 609                         prot);
 610         } else {
 611                 printf ("\n");
 612         }
 613
 614         l_sect = -1;
 615
 616         /* Disable interrupts which might cause a timeout here */
 617         flag = disable_interrupts();
 618
 619         /* Start erase on unprotected sectors */
 620         for (sect = s_first; sect<=s_last; sect++) {
 621                 if (info->protect[sect] == 0) { /* not protected */
 622                         addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
 623                         /*  printf("Erasing sector %p\n", addr2); */ /* CLH */
 624             if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 625                                 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 626                                 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 627                                 addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
 628                                 addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 629                                 addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 630                                 addr2[0] = (FLASH_WORD_SIZE)0x00500050;  /* block erase */
 631                                 for (i=0; i<50; i++)
 632                                         udelay(1000);  /* wait 1 ms */
 633                     wait_for_DQ7(info, sect);
 634                   }
 635                   else {
 636                         if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
 637                                         addr2[0] = (FLASH_WORD_SIZE)0x00600060;  /* unlock sector */
 638                                         addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* sector erase */
 639                             intel_wait_for_DQ7(info, sect);
 640                                         addr2[0] = (FLASH_WORD_SIZE)0x00200020;  /* sector erase */
 641                                         addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* sector erase */
 642                             intel_wait_for_DQ7(info, sect);
 643                                 }
 644                                 else {
 645                                         addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 646                                         addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 647                                         addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
 648                                         addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 649                                         addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 650                                         addr2[0] = (FLASH_WORD_SIZE)0x00300030;  /* sector erase */
 651                             wait_for_DQ7(info, sect);
 652                                 }
 653                  }
 654                  l_sect = sect;
 655                     /*
 656                      * Wait for each sector to complete, it's more
 657                      * reliable.  According to AMD Spec, you must
 658                      * issue all erase commands within a specified
 659                      * timeout.  This has been seen to fail, especially
 660                      * if printf()s are included (for debug)!!
 661                      */
 662                  /*   wait_for_DQ7(info, sect); */
 663                 }
 664         }
 665
 666         /* re-enable interrupts if necessary */
 667         if (flag)
 668                 enable_interrupts();
 669
 670         /* wait at least 80us - let's wait 1 ms */
 671         udelay (1000);
 672
 673 #if 0
 674         /*
 675          * We wait for the last triggered sector
 676          */
 677         if (l_sect < 0)
 678                 goto DONE;
 679         wait_for_DQ7(info, l_sect);
 680
 681 DONE:
 682 #endif
 683         /* reset to read mode */
 684         addr = (FLASH_WORD_SIZE *)info->start[0];
 685         addr[0] = (FLASH_WORD_SIZE)0x00F000F0;  /* reset bank */
 686
 687         printf (" done\n");
 688         return 0;
 689 }
 690
 691 void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt)
 692 {
 693         int i;
 694         volatile FLASH_WORD_SIZE *addr2;
 695         long c;
 696         c= (long)cnt;
 697         for(i=info->sector_count-1;i>0;i--)
 698         {
 699                 if(addr>=info->start[i])
 700                         break;
 701         }
 702         do {
 703                 addr2 = (FLASH_WORD_SIZE *)(info->start[i]);
 704                 addr2[0] = (FLASH_WORD_SIZE)0x00600060;  /* unlock sector setup */
 705                 addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* unlock sector */
 706                 intel_wait_for_DQ7(info, i);
 707                 i++;
 708                 c-=(info->start[i]-info->start[i-1]);
 709         }while(c>0);
 710
 711
 712 }
 713
 714
 715 /*-----------------------------------------------------------------------
 716  * Copy memory to flash, returns:
 717  * 0 - OK
 718  * 1 - write timeout
 719  * 2 - Flash not erased
 720  */
 721
 722 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 723 {
 724         ulong cp, wp, data;
 725         int i, l, rc;
 726
 727         if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
 728                 unlock_intel_sectors(info,addr,cnt);
 729         }
 730         wp = (addr & ~3);       /* get lower word aligned address */
 731         /*
 732          * handle unaligned start bytes
 733          */
 734         if ((l = addr - wp) != 0) {
 735                 data = 0;
 736                 for (i=0, cp=wp; i<l; ++i, ++cp) {
 737                         data = (data << 8) | (*(uchar *)cp);
 738                 }
 739                 for (; i<4 && cnt>0; ++i) {
 740                         data = (data << 8) | *src++;
 741                         --cnt;
 742                         ++cp;
 743                 }
 744                 for (; cnt==0 && i<4; ++i, ++cp) {
 745                         data = (data << 8) | (*(uchar *)cp);
 746                 }
 747
 748                 if ((rc = write_word(info, wp, data)) != 0) {
 749                         return (rc);
 750                 }
 751                 wp += 4;
 752         }
 753
 754         /*
 755          * handle word aligned part
 756          */
 757         while (cnt >= 4) {
 758                 data = 0;
 759                 for (i=0; i<4; ++i) {
 760                         data = (data << 8) | *src++;
 761                 }
 762                 if ((rc = write_word(info, wp, data)) != 0) {
 763                         return (rc);
 764                 }
 765                 wp  += 4;
 766                 if((wp % 0x10000)==0)
 767                         printf("."); /* show Progress */
 768                 cnt -= 4;
 769         }
 770
 771         if (cnt == 0) {
 772                 return (0);
 773         }
 774
 775         /*
 776          * handle unaligned tail bytes
 777          */
 778         data = 0;
 779         for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
 780                 data = (data << 8) | *src++;
 781                 --cnt;
 782         }
 783         for (; i<4; ++i, ++cp) {
 784                 data = (data << 8) | (*(uchar *)cp);
 785         }
 786         rc=write_word(info, wp, data);
 787         return rc;
 788 }
 789
 790 /*-----------------------------------------------------------------------
 791  * Write a word to Flash, returns:
 792  * 0 - OK
 793  * 1 - write timeout
 794  * 2 - Flash not erased
 795  */
 796 static FLASH_WORD_SIZE *read_val = (FLASH_WORD_SIZE *)0x200000;
 797
 798 static int write_word (flash_info_t *info, ulong dest, ulong data)
 799 {
 800         volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]);
 801         volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest;
 802         volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
 803         ulong start;
 804         int flag;
 805         int i;
 806
 807         /* Check if Flash is (sufficiently) erased */
 808         if ((*((volatile FLASH_WORD_SIZE *)dest) &
 809                 (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) {
 810                 return (2);
 811         }
 812         /* Disable interrupts which might cause a timeout here */
 813         flag = disable_interrupts();
 814         for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++)
 815         {
 816                 if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
 817                         /* intel style writting */
 818                         dest2[i] = (FLASH_WORD_SIZE)0x00500050;
 819                         dest2[i] = (FLASH_WORD_SIZE)0x00400040;
 820                         *read_val++ = data2[i];
 821                         dest2[i] = data2[i];
 822                         if (flag)
 823                                 enable_interrupts();
 824                         /* data polling for D7 */
 825                         start = get_timer (0);
 826                         udelay(10);
 827                         while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080)
 828                         {
 829                                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
 830                                         return (1);
 831                         }
 832                         dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */
 833                         udelay(10);
 834                         dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */
 835                         if(dest2[i]!=data2[i])
 836                                 printf("Error at %p 0x%04X != 0x%04X\n",&dest2[i],dest2[i],data2[i]);
 837                 }
 838                 else {
 839                         addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
 840                         addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
 841                         addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0;
 842                         dest2[i] = data2[i];
 843                         /* re-enable interrupts if necessary */
 844                         if (flag)
 845                                 enable_interrupts();
 846                         /* data polling for D7 */
 847                         start = get_timer (0);
 848                         while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) !=
 849                                 (data2[i] & (FLASH_WORD_SIZE)0x00800080)) {
 850                                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
 851                                         return (1);
 852                                 }
 853                         }
 854                 }
 855         }
 856         return (0);
 857 }
 858
 859 /*-----------------------------------------------------------------------
 860  */