board/eric/flash.c

   1 /*
   2  * (C) Copyright 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 #include <common.h>
  25 #include <ppc4xx.h>
  26 #include <asm/processor.h>
  27
  28 flash_info_t    flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips        */
  29
  30
  31 #ifdef CFG_FLASH_16BIT
  32 #define FLASH_WORD_SIZE unsigned short
  33 #define FLASH_ID_MASK   0xFFFF
  34 #else
  35 #define FLASH_WORD_SIZE unsigned long
  36 #define FLASH_ID_MASK   0xFFFFFFFF
  37 #endif
  38
  39 /*-----------------------------------------------------------------------
  40  * Functions
  41  */
  42 /* stolen from esteem192e/flash.c */
  43 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info);
  44
  45 #ifndef CFG_FLASH_16BIT
  46 static int write_word (flash_info_t *info, ulong dest, ulong data);
  47 #else
  48 static int write_short (flash_info_t *info, ulong dest, ushort data);
  49 #endif
  50 static void flash_get_offsets (ulong base, flash_info_t *info);
  51
  52
  53 /*-----------------------------------------------------------------------
  54  */
  55
  56 unsigned long flash_init (void)
  57 {
  58         unsigned long size_b0, size_b1;
  59         int i;
  60         uint pbcr;
  61         unsigned long base_b0, base_b1;
  62
  63         /* Init: no FLASHes known */
  64         for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
  65                 flash_info[i].flash_id = FLASH_UNKNOWN;
  66         }
  67
  68         /* Static FLASH Bank configuration here - FIXME XXX */
  69
  70         size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE0_PRELIM, &flash_info[0]);
  71
  72         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  73                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  74                         size_b0, size_b0<<20);
  75         }
  76
  77         /* Only one bank */
  78         if (CFG_MAX_FLASH_BANKS == 1)
  79           {
  80             /* Setup offsets */
  81             flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
  82
  83             /* Monitor protection ON by default */
  84 #if 0       /* sand: */
  85             (void)flash_protect(FLAG_PROTECT_SET,
  86                                 FLASH_BASE0_PRELIM-monitor_flash_len+size_b0,
  87                                 FLASH_BASE0_PRELIM-1+size_b0,
  88                                 &flash_info[0]);
  89 #else
  90             (void)flash_protect(FLAG_PROTECT_SET,
  91                                 CFG_MONITOR_BASE,
  92                                 CFG_MONITOR_BASE+monitor_flash_len-1,
  93                                 &flash_info[0]);
  94 #endif
  95             size_b1 = 0 ;
  96             flash_info[0].size = size_b0;
  97           }
  98
  99         /* 2 banks */
 100         else
 101           {
 102             size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE1_PRELIM, &flash_info[1]);
 103
 104             /* Re-do sizing to get full correct info */
 105
 106             if (size_b1)
 107               {
 108                 mtdcr(ebccfga, pb0cr);
 109                 pbcr = mfdcr(ebccfgd);
 110                 mtdcr(ebccfga, pb0cr);
 111                 base_b1 = -size_b1;
 112                 pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
 113                 mtdcr(ebccfgd, pbcr);
 114                 /*          printf("pb1cr = %x\n", pbcr); */
 115               }
 116
 117             if (size_b0)
 118               {
 119                 mtdcr(ebccfga, pb1cr);
 120                 pbcr = mfdcr(ebccfgd);
 121                 mtdcr(ebccfga, pb1cr);
 122                 base_b0 = base_b1 - size_b0;
 123                 pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
 124                 mtdcr(ebccfgd, pbcr);
 125                 /*            printf("pb0cr = %x\n", pbcr); */
 126               }
 127
 128             size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]);
 129
 130             flash_get_offsets (base_b0, &flash_info[0]);
 131
 132             /* monitor protection ON by default */
 133 #if 0       /* sand: */
 134             (void)flash_protect(FLAG_PROTECT_SET,
 135                                 FLASH_BASE0_PRELIM-monitor_flash_len+size_b0,
 136                                 FLASH_BASE0_PRELIM-1+size_b0,
 137                                 &flash_info[0]);
 138 #else
 139             (void)flash_protect(FLAG_PROTECT_SET,
 140                                 CFG_MONITOR_BASE,
 141                                 CFG_MONITOR_BASE+monitor_flash_len-1,
 142                                 &flash_info[0]);
 143 #endif
 144
 145             if (size_b1) {
 146               /* Re-do sizing to get full correct info */
 147               size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b1, &flash_info[1]);
 148
 149               flash_get_offsets (base_b1, &flash_info[1]);
 150
 151               /* monitor protection ON by default */
 152               (void)flash_protect(FLAG_PROTECT_SET,
 153                                   base_b1+size_b1-monitor_flash_len,
 154                                   base_b1+size_b1-1,
 155                                   &flash_info[1]);
 156               /* monitor protection OFF by default (one is enough) */
 157               (void)flash_protect(FLAG_PROTECT_CLEAR,
 158                                   base_b0+size_b0-monitor_flash_len,
 159                                   base_b0+size_b0-1,
 160                                   &flash_info[0]);
 161             } else {
 162               flash_info[1].flash_id = FLASH_UNKNOWN;
 163               flash_info[1].sector_count = -1;
 164             }
 165
 166             flash_info[0].size = size_b0;
 167             flash_info[1].size = size_b1;
 168           }/* else 2 banks */
 169         return (size_b0 + size_b1);
 170 }
 171
 172
 173
 174 /*-----------------------------------------------------------------------
 175  */
 176
 177 static void flash_get_offsets (ulong base, flash_info_t *info)
 178 {
 179         int i;
 180
 181         /* set up sector start adress table */
 182         if ((info->flash_id & FLASH_TYPEMASK) == FLASH_28F320J3A ||
 183             (info->flash_id & FLASH_TYPEMASK) == FLASH_28F640J3A ||
 184             (info->flash_id & FLASH_TYPEMASK) == FLASH_28F128J3A) {
 185             for (i = 0; i < info->sector_count; i++) {
 186                 info->start[i] = base + (i * info->size/info->sector_count);
 187             }
 188         } else if (info->flash_id & FLASH_BTYPE) {
 189              if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 190
 191 #ifndef CFG_FLASH_16BIT
 192                 /* set sector offsets for bottom boot block type        */
 193                 info->start[0] = base + 0x00000000;
 194                 info->start[1] = base + 0x00004000;
 195                 info->start[2] = base + 0x00008000;
 196                 info->start[3] = base + 0x0000C000;
 197                 info->start[4] = base + 0x00010000;
 198                 info->start[5] = base + 0x00014000;
 199                 info->start[6] = base + 0x00018000;
 200                 info->start[7] = base + 0x0001C000;
 201                 for (i = 8; i < info->sector_count; i++) {
 202                         info->start[i] = base + (i * 0x00020000) - 0x000E0000;
 203                 }
 204                }
 205              else {
 206                 /* set sector offsets for bottom boot block type        */
 207                 info->start[0] = base + 0x00000000;
 208                 info->start[1] = base + 0x00008000;
 209                 info->start[2] = base + 0x0000C000;
 210                 info->start[3] = base + 0x00010000;
 211                 for (i = 4; i < info->sector_count; i++) {
 212                         info->start[i] = base + (i * 0x00020000) - 0x00060000;
 213                 }
 214                }
 215 #else
 216                 /* set sector offsets for bottom boot block type        */
 217                 info->start[0] = base + 0x00000000;
 218                 info->start[1] = base + 0x00002000;
 219                 info->start[2] = base + 0x00004000;
 220                 info->start[3] = base + 0x00006000;
 221                 info->start[4] = base + 0x00008000;
 222                 info->start[5] = base + 0x0000A000;
 223                 info->start[6] = base + 0x0000C000;
 224                 info->start[7] = base + 0x0000E000;
 225                 for (i = 8; i < info->sector_count; i++) {
 226                         info->start[i] = base + (i * 0x00010000) - 0x00070000;
 227                 }
 228                }
 229              else {
 230                 /* set sector offsets for bottom boot block type        */
 231                 info->start[0] = base + 0x00000000;
 232                 info->start[1] = base + 0x00004000;
 233                 info->start[2] = base + 0x00006000;
 234                 info->start[3] = base + 0x00008000;
 235                 for (i = 4; i < info->sector_count; i++) {
 236                         info->start[i] = base + (i * 0x00010000) - 0x00030000;
 237                 }
 238                }
 239 #endif
 240         } else {
 241                 /* set sector offsets for top boot block type           */
 242                 i = info->sector_count - 1;
 243              if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 244
 245 #ifndef CFG_FLASH_16BIT
 246                 info->start[i--] = base + info->size - 0x00004000;
 247                 info->start[i--] = base + info->size - 0x00008000;
 248                 info->start[i--] = base + info->size - 0x0000C000;
 249                 info->start[i--] = base + info->size - 0x00010000;
 250                 info->start[i--] = base + info->size - 0x00014000;
 251                 info->start[i--] = base + info->size - 0x00018000;
 252                 info->start[i--] = base + info->size - 0x0001C000;
 253                 for (; i >= 0; i--) {
 254                         info->start[i] = base + i * 0x00020000;
 255                 }
 256
 257                } else {
 258
 259                 info->start[i--] = base + info->size - 0x00008000;
 260                 info->start[i--] = base + info->size - 0x0000C000;
 261                 info->start[i--] = base + info->size - 0x00010000;
 262                 for (; i >= 0; i--) {
 263                         info->start[i] = base + i * 0x00020000;
 264                 }
 265                }
 266 #else
 267                 info->start[i--] = base + info->size - 0x00002000;
 268                 info->start[i--] = base + info->size - 0x00004000;
 269                 info->start[i--] = base + info->size - 0x00006000;
 270                 info->start[i--] = base + info->size - 0x00008000;
 271                 info->start[i--] = base + info->size - 0x0000A000;
 272                 info->start[i--] = base + info->size - 0x0000C000;
 273                 info->start[i--] = base + info->size - 0x0000E000;
 274                 for (; i >= 0; i--) {
 275                         info->start[i] = base + i * 0x00010000;
 276                 }
 277
 278                } else {
 279
 280                 info->start[i--] = base + info->size - 0x00004000;
 281                 info->start[i--] = base + info->size - 0x00006000;
 282                 info->start[i--] = base + info->size - 0x00008000;
 283                 for (; i >= 0; i--) {
 284                         info->start[i] = base + i * 0x00010000;
 285                 }
 286                }
 287 #endif
 288         }
 289
 290
 291 }
 292
 293 /*-----------------------------------------------------------------------
 294  */
 295
 296 void flash_print_info  (flash_info_t *info)
 297 {
 298         int i;
 299         uchar *boottype;
 300         uchar botboot[]=", bottom boot sect)\n";
 301         uchar topboot[]=", top boot sector)\n";
 302
 303         if (info->flash_id == FLASH_UNKNOWN) {
 304                 printf ("missing or unknown FLASH type\n");
 305                 return;
 306         }
 307
 308         switch (info->flash_id & FLASH_VENDMASK) {
 309         case FLASH_MAN_AMD:     printf ("AMD ");                break;
 310         case FLASH_MAN_FUJ:     printf ("FUJITSU ");            break;
 311         case FLASH_MAN_SST:     printf ("SST ");                break;
 312         case FLASH_MAN_STM:     printf ("STM ");                break;
 313         case FLASH_MAN_INTEL:   printf ("INTEL ");              break;
 314         default:                printf ("Unknown Vendor ");     break;
 315         }
 316
 317         if (info->flash_id & 0x0001 ) {
 318         boottype = botboot;
 319         } else {
 320         boottype = topboot;
 321         }
 322
 323         switch (info->flash_id & FLASH_TYPEMASK) {
 324         case FLASH_AM400B:      printf ("AM29LV400B (4 Mbit%s",boottype);
 325                                 break;
 326         case FLASH_AM400T:      printf ("AM29LV400T (4 Mbit%s",boottype);
 327                                 break;
 328         case FLASH_AM800B:      printf ("AM29LV800B (8 Mbit%s",boottype);
 329                                 break;
 330         case FLASH_AM800T:      printf ("AM29LV800T (8 Mbit%s",boottype);
 331                                 break;
 332         case FLASH_AM160B:      printf ("AM29LV160B (16 Mbit%s",boottype);
 333                                 break;
 334         case FLASH_AM160T:      printf ("AM29LV160T (16 Mbit%s",boottype);
 335                                 break;
 336         case FLASH_AM320B:      printf ("AM29LV320B (32 Mbit%s",boottype);
 337                                 break;
 338         case FLASH_AM320T:      printf ("AM29LV320T (32 Mbit%s",boottype);
 339                                 break;
 340         case FLASH_INTEL800B:   printf ("INTEL28F800B (8 Mbit%s",boottype);
 341                                 break;
 342         case FLASH_INTEL800T:   printf ("INTEL28F800T (8 Mbit%s",boottype);
 343                                 break;
 344         case FLASH_INTEL160B:   printf ("INTEL28F160B (16 Mbit%s",boottype);
 345                                 break;
 346         case FLASH_INTEL160T:   printf ("INTEL28F160T (16 Mbit%s",boottype);
 347                                 break;
 348         case FLASH_INTEL320B:   printf ("INTEL28F320B (32 Mbit%s",boottype);
 349                                 break;
 350         case FLASH_INTEL320T:   printf ("INTEL28F320T (32 Mbit%s",boottype);
 351                                 break;
 352
 353 #if 0 /* enable when devices are available */
 354
 355         case FLASH_INTEL640B:   printf ("INTEL28F640B (64 Mbit%s",boottype);
 356                                 break;
 357         case FLASH_INTEL640T:   printf ("INTEL28F640T (64 Mbit%s",boottype);
 358                                 break;
 359 #endif
 360         case FLASH_28F320J3A:   printf ("INTEL28F320J3A (32 Mbit%s",boottype);
 361                                 break;
 362         case FLASH_28F640J3A:   printf ("INTEL28F640J3A (64 Mbit%s",boottype);
 363                                 break;
 364         case FLASH_28F128J3A:   printf ("INTEL28F128J3A (128 Mbit%s",boottype);
 365                                 break;
 366
 367         default:                printf ("Unknown Chip Type\n");
 368                                 break;
 369         }
 370
 371         printf ("  Size: %ld MB in %d Sectors\n",
 372                 info->size >> 20, info->sector_count);
 373
 374         printf ("  Sector Start Addresses:");
 375         for (i=0; i<info->sector_count; ++i) {
 376                 if ((i % 5) == 0)
 377                         printf ("\n   ");
 378                 printf (" %08lX%s",
 379                         info->start[i],
 380                         info->protect[i] ? " (RO)" : "     "
 381                 );
 382         }
 383         printf ("\n");
 384         return;
 385 }
 386
 387
 388 /*-----------------------------------------------------------------------
 389  */
 390
 391
 392 /*-----------------------------------------------------------------------
 393  */
 394
 395 /*
 396  * The following code cannot be run from FLASH!
 397  */
 398 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info)
 399 {
 400         short i;
 401         ulong base = (ulong)addr;
 402         FLASH_WORD_SIZE value;
 403
 404         /* Write auto select command: read Manufacturer ID */
 405
 406
 407 #ifndef CFG_FLASH_16BIT
 408
 409         /*
 410          * Note: if it is an AMD flash and the word at addr[0000]
 411          * is 0x00890089 this routine will think it is an Intel
 412          * flash device and may(most likely) cause trouble.
 413          */
 414
 415         addr[0x0000] = 0x00900090;
 416         if(addr[0x0000] != 0x00890089){
 417                 addr[0x0555] = 0x00AA00AA;
 418                 addr[0x02AA] = 0x00550055;
 419                 addr[0x0555] = 0x00900090;
 420 #else
 421
 422         /*
 423          * Note: if it is an AMD flash and the word at addr[0000]
 424          * is 0x0089 this routine will think it is an Intel
 425          * flash device and may(most likely) cause trouble.
 426          */
 427
 428         addr[0x0000] = 0x0090;
 429
 430         if(addr[0x0000] != 0x0089){
 431                 addr[0x0555] = 0x00AA;
 432                 addr[0x02AA] = 0x0055;
 433                 addr[0x0555] = 0x0090;
 434 #endif
 435         }
 436         value = addr[0];
 437
 438         switch (value) {
 439         case (AMD_MANUFACT & FLASH_ID_MASK):
 440                 info->flash_id = FLASH_MAN_AMD;
 441                 break;
 442         case (FUJ_MANUFACT & FLASH_ID_MASK):
 443                 info->flash_id = FLASH_MAN_FUJ;
 444                 break;
 445         case (STM_MANUFACT & FLASH_ID_MASK):
 446                 info->flash_id = FLASH_MAN_STM;
 447                 break;
 448         case (SST_MANUFACT & FLASH_ID_MASK):
 449                 info->flash_id = FLASH_MAN_SST;
 450                 break;
 451         case (INTEL_MANUFACT & FLASH_ID_MASK):
 452                 info->flash_id = FLASH_MAN_INTEL;
 453                 break;
 454         default:
 455                 info->flash_id = FLASH_UNKNOWN;
 456                 info->sector_count = 0;
 457                 info->size = 0;
 458                 return (0);                     /* no or unknown flash  */
 459
 460         }
 461
 462         value = addr[1];                        /* device ID            */
 463
 464         switch (value) {
 465
 466         case (AMD_ID_LV400T & FLASH_ID_MASK):
 467                 info->flash_id += FLASH_AM400T;
 468                 info->sector_count = 11;
 469                 info->size = 0x00100000;
 470                 break;                          /* => 1 MB              */
 471
 472         case (AMD_ID_LV400B & FLASH_ID_MASK):
 473                 info->flash_id += FLASH_AM400B;
 474                 info->sector_count = 11;
 475                 info->size = 0x00100000;
 476                 break;                          /* => 1 MB              */
 477
 478         case (AMD_ID_LV800T & FLASH_ID_MASK):
 479                 info->flash_id += FLASH_AM800T;
 480                 info->sector_count = 19;
 481                 info->size = 0x00200000;
 482                 break;                          /* => 2 MB              */
 483
 484         case (AMD_ID_LV800B & FLASH_ID_MASK):
 485                 info->flash_id += FLASH_AM800B;
 486                 info->sector_count = 19;
 487                 info->size = 0x00200000;
 488                 break;                          /* => 2 MB              */
 489
 490         case (AMD_ID_LV160T & FLASH_ID_MASK):
 491                 info->flash_id += FLASH_AM160T;
 492                 info->sector_count = 35;
 493                 info->size = 0x00400000;
 494                 break;                          /* => 4 MB              */
 495
 496         case (AMD_ID_LV160B & FLASH_ID_MASK):
 497                 info->flash_id += FLASH_AM160B;
 498                 info->sector_count = 35;
 499                 info->size = 0x00400000;
 500                 break;                          /* => 4 MB              */
 501 #if 0   /* enable when device IDs are available */
 502         case (AMD_ID_LV320T & FLASH_ID_MASK):
 503                 info->flash_id += FLASH_AM320T;
 504                 info->sector_count = 67;
 505                 info->size = 0x00800000;
 506                 break;                          /* => 8 MB              */
 507
 508         case (AMD_ID_LV320B & FLASH_ID_MASK):
 509                 info->flash_id += FLASH_AM320B;
 510                 info->sector_count = 67;
 511                 info->size = 0x00800000;
 512                 break;                          /* => 8 MB              */
 513 #endif
 514
 515         case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
 516                 info->flash_id += FLASH_INTEL800T;
 517                 info->sector_count = 23;
 518                 info->size = 0x00200000;
 519                 break;                          /* => 2 MB              */
 520
 521         case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
 522                 info->flash_id += FLASH_INTEL800B;
 523                 info->sector_count = 23;
 524                 info->size = 0x00200000;
 525                 break;                          /* => 2 MB              */
 526
 527         case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
 528                 info->flash_id += FLASH_INTEL160T;
 529                 info->sector_count = 39;
 530                 info->size = 0x00400000;
 531                 break;                          /* => 4 MB              */
 532
 533         case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
 534                 info->flash_id += FLASH_INTEL160B;
 535                 info->sector_count = 39;
 536                 info->size = 0x00400000;
 537                 break;                          /* => 4 MB              */
 538
 539         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 540                 info->flash_id += FLASH_INTEL320T;
 541                 info->sector_count = 71;
 542                 info->size = 0x00800000;
 543                 break;                          /* => 8 MB              */
 544
 545         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 546                 info->flash_id += FLASH_AM320B;
 547                 info->sector_count = 71;
 548                 info->size = 0x00800000;
 549                 break;                          /* => 8 MB              */
 550
 551 #if 0 /* enable when devices are available */
 552         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 553                 info->flash_id += FLASH_INTEL320T;
 554                 info->sector_count = 135;
 555                 info->size = 0x01000000;
 556                 break;                          /* => 16 MB             */
 557
 558         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 559                 info->flash_id += FLASH_AM320B;
 560                 info->sector_count = 135;
 561                 info->size = 0x01000000;
 562                 break;                          /* => 16 MB             */
 563 #endif
 564         case (INTEL_ID_28F320J3A & FLASH_ID_MASK):
 565                 info->flash_id += FLASH_28F320J3A;
 566                 info->sector_count = 32;
 567                 info->size = 0x00400000;
 568                 break;                          /* => 32 MBit   */
 569         case (INTEL_ID_28F640J3A & FLASH_ID_MASK):
 570                 info->flash_id += FLASH_28F640J3A;
 571                 info->sector_count = 64;
 572                 info->size = 0x00800000;
 573                 break;                          /* => 64 MBit   */
 574         case (INTEL_ID_28F128J3A & FLASH_ID_MASK):
 575                 info->flash_id += FLASH_28F128J3A;
 576                 info->sector_count = 128;
 577                 info->size = 0x01000000;
 578                 break;                          /* => 128 MBit          */
 579
 580         default:
 581                 /* FIXME*/
 582                 info->flash_id = FLASH_UNKNOWN;
 583                 return (0);                     /* => no or unknown flash */
 584         }
 585
 586         flash_get_offsets(base, info);
 587
 588         /* check for protected sectors */
 589         for (i = 0; i < info->sector_count; i++) {
 590                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 591                 /* D0 = 1 if protected */
 592                 addr = (volatile FLASH_WORD_SIZE *)(info->start[i]);
 593                 info->protect[i] = addr[2] & 1;
 594         }
 595
 596         /*
 597          * Prevent writes to uninitialized FLASH.
 598          */
 599         if (info->flash_id != FLASH_UNKNOWN) {
 600                 addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 601                 if( (info->flash_id & 0xFF00) == FLASH_MAN_INTEL){
 602                    *addr = (0x00F000F0 & FLASH_ID_MASK);        /* reset bank */
 603                 } else {
 604                    *addr = (0x00FF00FF & FLASH_ID_MASK);        /* reset bank */
 605                 }
 606         }
 607
 608         return (info->size);
 609 }
 610
 611
 612 /*-----------------------------------------------------------------------
 613  */
 614
 615 int     flash_erase (flash_info_t *info, int s_first, int s_last)
 616 {
 617
 618         volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);
 619         int flag, prot, sect, l_sect, barf;
 620         ulong start, now, last;
 621         int rcode = 0;
 622
 623         if ((s_first < 0) || (s_first > s_last)) {
 624                 if (info->flash_id == FLASH_UNKNOWN) {
 625                         printf ("- missing\n");
 626                 } else {
 627                         printf ("- no sectors to erase\n");
 628                 }
 629                 return 1;
 630         }
 631
 632         if ((info->flash_id == FLASH_UNKNOWN) ||
 633             ((info->flash_id > FLASH_AMD_COMP) &&
 634              ( (info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL ) ) ){
 635                 printf ("Can't erase unknown flash type - aborted\n");
 636                 return 1;
 637         }
 638
 639         prot = 0;
 640         for (sect=s_first; sect<=s_last; ++sect) {
 641                 if (info->protect[sect]) {
 642                         prot++;
 643                 }
 644         }
 645
 646         if (prot) {
 647                 printf ("- Warning: %d protected sectors will not be erased!\n",
 648                         prot);
 649         } else {
 650                 printf ("\n");
 651         }
 652
 653         l_sect = -1;
 654
 655         /* Disable interrupts which might cause a timeout here */
 656         flag = disable_interrupts();
 657     if(info->flash_id < FLASH_AMD_COMP) {
 658 #ifndef CFG_FLASH_16BIT
 659         addr[0x0555] = 0x00AA00AA;
 660         addr[0x02AA] = 0x00550055;
 661         addr[0x0555] = 0x00800080;
 662         addr[0x0555] = 0x00AA00AA;
 663         addr[0x02AA] = 0x00550055;
 664 #else
 665         addr[0x0555] = 0x00AA;
 666         addr[0x02AA] = 0x0055;
 667         addr[0x0555] = 0x0080;
 668         addr[0x0555] = 0x00AA;
 669         addr[0x02AA] = 0x0055;
 670 #endif
 671         /* Start erase on unprotected sectors */
 672         for (sect = s_first; sect<=s_last; sect++) {
 673                 if (info->protect[sect] == 0) { /* not protected */
 674                         addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]);
 675                         addr[0] = (0x00300030 & FLASH_ID_MASK);
 676                         l_sect = sect;
 677                 }
 678         }
 679
 680         /* re-enable interrupts if necessary */
 681         if (flag)
 682                 enable_interrupts();
 683
 684         /* wait at least 80us - let's wait 1 ms */
 685         udelay (1000);
 686
 687         /*
 688          * We wait for the last triggered sector
 689          */
 690         if (l_sect < 0)
 691                 goto DONE;
 692
 693         start = get_timer (0);
 694         last  = start;
 695         addr = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);
 696         while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=
 697                           (0x00800080&FLASH_ID_MASK)  )
 698         {
 699                 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
 700                         printf ("Timeout\n");
 701                         return 1;
 702                 }
 703                 /* show that we're waiting */
 704                 if ((now - last) > 1000) {      /* every second */
 705                         serial_putc ('.');
 706                         last = now;
 707                 }
 708         }
 709
 710 DONE:
 711         /* reset to read mode */
 712         addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 713         addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
 714     } else {
 715
 716
 717         for (sect = s_first; sect<=s_last; sect++) {
 718                 if (info->protect[sect] == 0) { /* not protected */
 719                         barf = 0;
 720 #ifndef CFG_FLASH_16BIT
 721                         addr = (vu_long*)(info->start[sect]);
 722                         addr[0] = 0x00200020;
 723                         addr[0] = 0x00D000D0;
 724                         while(!(addr[0] & 0x00800080)); /* wait for error or finish */
 725                         if( addr[0] & 0x003A003A) {     /* check for error */
 726                                 barf = addr[0] & 0x003A0000;
 727                                 if( barf ) {
 728                                         barf >>=16;
 729                                 } else {
 730                                         barf = addr[0] & 0x0000003A;
 731                                 }
 732                         }
 733 #else
 734                         addr = (vu_short*)(info->start[sect]);
 735                         addr[0] = 0x0020;
 736                         addr[0] = 0x00D0;
 737                         while(!(addr[0] & 0x0080));     /* wait for error or finish */
 738                         if( addr[0] & 0x003A)   /* check for error */
 739                                 barf = addr[0] & 0x003A;
 740 #endif
 741                         if(barf) {
 742                                 printf("\nFlash error in sector at %lx\n",(unsigned long)addr);
 743                                 if(barf & 0x0002) printf("Block locked, not erased.\n");
 744                                 if((barf & 0x0030) == 0x0030)
 745                                         printf("Command Sequence error.\n");
 746                                 if((barf & 0x0030) == 0x0020)
 747                                         printf("Block Erase error.\n");
 748                                 if(barf & 0x0008) printf("Vpp Low error.\n");
 749                                 rcode = 1;
 750                         } else printf(".");
 751                         l_sect = sect;
 752                 }
 753         addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 754         addr[0] = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
 755
 756         }
 757
 758     }
 759         printf (" done\n");
 760         return rcode;
 761 }
 762
 763 /*-----------------------------------------------------------------------
 764  */
 765
 766 /*flash_info_t *addr2info (ulong addr)
 767 {
 768         flash_info_t *info;
 769         int i;
 770
 771         for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
 772                 if ((addr >= info->start[0]) &&
 773                     (addr < (info->start[0] + info->size)) ) {
 774                         return (info);
 775                 }
 776         }
 777
 778         return (NULL);
 779 }
 780 */
 781 /*-----------------------------------------------------------------------
 782  * Copy memory to flash.
 783  * Make sure all target addresses are within Flash bounds,
 784  * and no protected sectors are hit.
 785  * Returns:
 786  * 0 - OK
 787  * 1 - write timeout
 788  * 2 - Flash not erased
 789  * 4 - target range includes protected sectors
 790  * 8 - target address not in Flash memory
 791  */
 792
 793 /*int flash_write (uchar *src, ulong addr, ulong cnt)
 794 {
 795         int i;
 796         ulong         end        = addr + cnt - 1;
 797         flash_info_t *info_first = addr2info (addr);
 798         flash_info_t *info_last  = addr2info (end );
 799         flash_info_t *info;
 800
 801         if (cnt == 0) {
 802                 return (0);
 803         }
 804
 805         if (!info_first || !info_last) {
 806                 return (8);
 807         }
 808
 809         for (info = info_first; info <= info_last; ++info) {
 810                 ulong b_end = info->start[0] + info->size;*/    /* bank end addr */
 811 /*              short s_end = info->sector_count - 1;
 812                 for (i=0; i<info->sector_count; ++i) {
 813                         ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
 814
 815                         if ((end >= info->start[i]) && (addr < e_addr) &&
 816                             (info->protect[i] != 0) ) {
 817                                 return (4);
 818                         }
 819                 }
 820         }
 821
 822 */      /* finally write data to flash */
 823 /*      for (info = info_first; info <= info_last && cnt>0; ++info) {
 824                 ulong len;
 825
 826                 len = info->start[0] + info->size - addr;
 827                 if (len > cnt)
 828                         len = cnt;
 829                 if ((i = write_buff(info, src, addr, len)) != 0) {
 830                         return (i);
 831                 }
 832                 cnt  -= len;
 833                 addr += len;
 834                 src  += len;
 835         }
 836         return (0);
 837 }
 838 */
 839 /*-----------------------------------------------------------------------
 840  * Copy memory to flash, returns:
 841  * 0 - OK
 842  * 1 - write timeout
 843  * 2 - Flash not erased
 844  */
 845
 846 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 847 {
 848 #ifndef CFG_FLASH_16BIT
 849         ulong cp, wp, data;
 850         int l;
 851 #else
 852         ulong cp, wp;
 853         ushort data;
 854 #endif
 855         int i, rc;
 856
 857 #ifndef CFG_FLASH_16BIT
 858
 859
 860         wp = (addr & ~3);       /* get lower word aligned address */
 861
 862         /*
 863          * handle unaligned start bytes
 864          */
 865         if ((l = addr - wp) != 0) {
 866                 data = 0;
 867                 for (i=0, cp=wp; i<l; ++i, ++cp) {
 868                         data = (data << 8) | (*(uchar *)cp);
 869                 }
 870                 for (; i<4 && cnt>0; ++i) {
 871                         data = (data << 8) | *src++;
 872                         --cnt;
 873                         ++cp;
 874                 }
 875                 for (; cnt==0 && i<4; ++i, ++cp) {
 876                         data = (data << 8) | (*(uchar *)cp);
 877                 }
 878
 879                 if ((rc = write_word(info, wp, data)) != 0) {
 880                         return (rc);
 881                 }
 882                 wp += 4;
 883         }
 884
 885         /*
 886          * handle word aligned part
 887          */
 888         while (cnt >= 4) {
 889                 data = 0;
 890                 for (i=0; i<4; ++i) {
 891                         data = (data << 8) | *src++;
 892                 }
 893                 if ((rc = write_word(info, wp, data)) != 0) {
 894                         return (rc);
 895                 }
 896                 wp  += 4;
 897                 cnt -= 4;
 898         }
 899
 900         if (cnt == 0) {
 901                 return (0);
 902         }
 903
 904         /*
 905          * handle unaligned tail bytes
 906          */
 907         data = 0;
 908         for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
 909                 data = (data << 8) | *src++;
 910                 --cnt;
 911         }
 912         for (; i<4; ++i, ++cp) {
 913                 data = (data << 8) | (*(uchar *)cp);
 914         }
 915
 916         return (write_word(info, wp, data));
 917
 918 #else
 919         wp = (addr & ~1);       /* get lower word aligned address */
 920
 921         /*
 922          * handle unaligned start byte
 923          */
 924         if (addr - wp) {
 925                 data = 0;
 926                 data = (data << 8) | *src++;
 927                 --cnt;
 928                 if ((rc = write_short(info, wp, data)) != 0) {
 929                         return (rc);
 930                 }
 931                 wp += 2;
 932         }
 933
 934         /*
 935          * handle word aligned part
 936          */
 937 /*      l = 0; used for debuging  */
 938         while (cnt >= 2) {
 939                 data = 0;
 940                 for (i=0; i<2; ++i) {
 941                         data = (data << 8) | *src++;
 942                 }
 943
 944 /*              if(!l){
 945                         printf("%x",data);
 946                         l = 1;
 947                 }  used for debuging */
 948
 949                 if ((rc = write_short(info, wp, data)) != 0) {
 950                         return (rc);
 951                 }
 952                 wp  += 2;
 953                 cnt -= 2;
 954         }
 955
 956         if (cnt == 0) {
 957                 return (0);
 958         }
 959
 960         /*
 961          * handle unaligned tail bytes
 962          */
 963         data = 0;
 964         for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
 965                 data = (data << 8) | *src++;
 966                 --cnt;
 967         }
 968         for (; i<2; ++i, ++cp) {
 969                 data = (data << 8) | (*(uchar *)cp);
 970         }
 971
 972         return (write_short(info, wp, data));
 973
 974
 975 #endif
 976 }
 977
 978 /*-----------------------------------------------------------------------
 979  * Write a word to Flash, returns:
 980  * 0 - OK
 981  * 1 - write timeout
 982  * 2 - Flash not erased
 983  */
 984 #ifndef CFG_FLASH_16BIT
 985 static int write_word (flash_info_t *info, ulong dest, ulong data)
 986 {
 987         vu_long *addr = (vu_long*)(info->start[0]);
 988         ulong start,barf;
 989         int flag;
 990
 991
 992         /* Check if Flash is (sufficiently) erased */
 993         if ((*((vu_long *)dest) & data) != data) {
 994                 return (2);
 995         }
 996
 997         /* Disable interrupts which might cause a timeout here */
 998         flag = disable_interrupts();
 999
1000      if(info->flash_id > FLASH_AMD_COMP) {
1001         /* AMD stuff */
1002         addr[0x0555] = 0x00AA00AA;
1003         addr[0x02AA] = 0x00550055;
1004         addr[0x0555] = 0x00A000A0;
1005      } else {
1006         /* intel stuff */
1007         *addr = 0x00400040;
1008      }
1009         *((vu_long *)dest) = data;
1010
1011         /* re-enable interrupts if necessary */
1012         if (flag)
1013                 enable_interrupts();
1014
1015         /* data polling for D7 */
1016         start = get_timer (0);
1017
1018      if(info->flash_id > FLASH_AMD_COMP) {
1019
1020         while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
1021                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1022                         return (1);
1023                 }
1024         }
1025
1026      } else {
1027
1028         while(!(addr[0] & 0x00800080)){         /* wait for error or finish */
1029                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1030                         return (1);
1031         }
1032
1033         if( addr[0] & 0x003A003A) {     /* check for error */
1034                 barf = addr[0] & 0x003A0000;
1035                 if( barf ) {
1036                         barf >>=16;
1037                 } else {
1038                         barf = addr[0] & 0x0000003A;
1039                 }
1040                 printf("\nFlash write error at address %lx\n",(unsigned long)dest);
1041                 if(barf & 0x0002) printf("Block locked, not erased.\n");
1042                 if(barf & 0x0010) printf("Programming error.\n");
1043                 if(barf & 0x0008) printf("Vpp Low error.\n");
1044                 return(2);
1045         }
1046
1047
1048      }
1049
1050         return (0);
1051
1052 }
1053
1054 #else
1055
1056 static int write_short (flash_info_t *info, ulong dest, ushort data)
1057 {
1058         vu_short *addr = (vu_short*)(info->start[0]);
1059         ulong start,barf;
1060         int flag;
1061
1062         /* Check if Flash is (sufficiently) erased */
1063         if ((*((vu_short *)dest) & data) != data) {
1064                 return (2);
1065         }
1066
1067         /* Disable interrupts which might cause a timeout here */
1068         flag = disable_interrupts();
1069
1070      if(info->flash_id < FLASH_AMD_COMP) {
1071         /* AMD stuff */
1072         addr[0x0555] = 0x00AA;
1073         addr[0x02AA] = 0x0055;
1074         addr[0x0555] = 0x00A0;
1075      } else {
1076         /* intel stuff */
1077         *addr = 0x00D0;
1078         *addr = 0x0040;
1079      }
1080         *((vu_short *)dest) = data;
1081
1082         /* re-enable interrupts if necessary */
1083         if (flag)
1084                 enable_interrupts();
1085
1086         /* data polling for D7 */
1087         start = get_timer (0);
1088
1089      if(info->flash_id < FLASH_AMD_COMP) {
1090           /* AMD stuff */
1091         while ((*((vu_short *)dest) & 0x0080) != (data & 0x0080)) {
1092                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1093                         return (1);
1094                 }
1095         }
1096
1097      } else {
1098         /* intel stuff */
1099         while(!(addr[0] & 0x0080)){     /* wait for error or finish */
1100                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
1101         }
1102
1103         if( addr[0] & 0x003A) { /* check for error */
1104                 barf = addr[0] & 0x003A;
1105                 printf("\nFlash write error at address %lx\n",(unsigned long)dest);
1106                 if(barf & 0x0002) printf("Block locked, not erased.\n");
1107                 if(barf & 0x0010) printf("Programming error.\n");
1108                 if(barf & 0x0008) printf("Vpp Low error.\n");
1109                 return(2);
1110         }
1111         *addr = 0x00B0;
1112         *addr = 0x0070;
1113         while(!(addr[0] & 0x0080)){     /* wait for error or finish */
1114                 if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
1115         }
1116
1117         *addr = 0x00FF;
1118
1119      }
1120
1121         return (0);
1122
1123 }
1124
1125
1126 #endif
1127
1128 /*-----------------------------------------------------------------------
1129  */
1130