git.sur5r.net Git - u-boot/blob - board/snmc/qs860t/flash.c

   1 /*
   2  * (C) Copyright 2003
   3  * MuLogic B.V.
   4  *
   5  * (C) Copyright 2001
   6  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <ppc4xx.h>
  29 #include <asm/u-boot.h>
  30 #include <asm/processor.h>
  31
  32 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
  33
  34
  35 #ifdef CFG_FLASH_16BIT
  36 #define FLASH_WORD_SIZE unsigned short
  37 #define FLASH_ID_MASK   0xFFFF
  38 #else
  39 #define FLASH_WORD_SIZE unsigned long
  40 #define FLASH_ID_MASK   0xFFFFFFFF
  41 #endif
  42
  43 /*-----------------------------------------------------------------------
  44  * Functions
  45  */
  46 /* stolen from esteem192e/flash.c */
  47 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info);
  48
  49 #ifndef CFG_FLASH_16BIT
  50 static int write_word (flash_info_t *info, ulong dest, ulong data);
  51 #else
  52 static int write_short (flash_info_t *info, ulong dest, ushort data);
  53 #endif
  54 static void flash_get_offsets (ulong base, flash_info_t *info);
  55
  56
  57 /*-----------------------------------------------------------------------
  58  */
  59
  60 unsigned long flash_init (void)
  61 {
  62         unsigned long size_b0, size_b1;
  63         int i;
  64         uint pbcr;
  65         unsigned long base_b0, base_b1;
  66
  67         /* Init: no FLASHes known */
  68         for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
  69                 flash_info[i].flash_id = FLASH_UNKNOWN;
  70         }
  71
  72         /* Static FLASH Bank configuration here - FIXME XXX */
  73
  74         size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE1_PRELIM, &flash_info[0]);
  75
  76         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  77                 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  78                         size_b0, size_b0<<20);
  79         }
  80
  81         /* Only one bank */
  82         if (CFG_MAX_FLASH_BANKS == 1)
  83         {
  84                 /* Setup offsets */
  85                 flash_get_offsets (FLASH_BASE1_PRELIM, &flash_info[0]);
  86
  87                 /* Monitor protection ON by default */
  88 #if 0   /* sand: */
  89                 (void)flash_protect(FLAG_PROTECT_SET,
  90                         FLASH_BASE1_PRELIM-CFG_MONITOR_LEN+size_b0,
  91                         FLASH_BASE1_PRELIM-1+size_b0,
  92                         &flash_info[0]);
  93 #else
  94                 (void)flash_protect(FLAG_PROTECT_SET,
  95                         CFG_MONITOR_BASE,
  96                         CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
  97                         &flash_info[0]);
  98 #endif
  99                 size_b1 = 0 ;
 100                 flash_info[0].size = size_b0;
 101         }
 102         /* 2 banks */
 103         else
 104         {
 105                 size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE1_PRELIM, &flash_info[1]);
 106
 107                 /* Re-do sizing to get full correct info */
 108                 if (size_b1)
 109                 {
 110                         mtdcr(ebccfga, pb0cr);
 111                         pbcr = mfdcr(ebccfgd);
 112                         mtdcr(ebccfga, pb0cr);
 113                         base_b1 = -size_b1;
 114                         pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
 115                         mtdcr(ebccfgd, pbcr);
 116                 }
 117
 118                 if (size_b0)
 119                 {
 120                         mtdcr(ebccfga, pb1cr);
 121                         pbcr = mfdcr(ebccfgd);
 122                         mtdcr(ebccfga, pb1cr);
 123                         base_b0 = base_b1 - size_b0;
 124                         pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
 125                         mtdcr(ebccfgd, 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_BASE1_PRELIM-CFG_MONITOR_LEN+size_b0,
 136                         FLASH_BASE1_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+CFG_MONITOR_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-CFG_MONITOR_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-CFG_MONITOR_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) == INTEL_ID_28F320J3A ||
 183                 (info->flash_id & FLASH_TYPEMASK) == INTEL_ID_28F640J3A ||
 184                 (info->flash_id & FLASH_TYPEMASK) == INTEL_ID_28F128J3A) {
 185                 for (i = 0; i < info->sector_count; i++) {
 186                         info->start[i] = base + (i * info->size/info->sector_count);
 187                 }
 188         }
 189         else if (info->flash_id & FLASH_BTYPE) {
 190                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 191
 192 #ifndef CFG_FLASH_16BIT
 193                         /* set sector offsets for bottom boot block type */
 194                         info->start[0] = base + 0x00000000;
 195                         info->start[1] = base + 0x00004000;
 196                         info->start[2] = base + 0x00008000;
 197                         info->start[3] = base + 0x0000C000;
 198                         info->start[4] = base + 0x00010000;
 199                         info->start[5] = base + 0x00014000;
 200                         info->start[6] = base + 0x00018000;
 201                         info->start[7] = base + 0x0001C000;
 202                         for (i = 8; i < info->sector_count; i++) {
 203                                 info->start[i] = base + (i * 0x00020000) - 0x000E0000;
 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                 } else {
 229                         /* set sector offsets for bottom boot block type */
 230                         info->start[0] = base + 0x00000000;
 231                         info->start[1] = base + 0x00004000;
 232                         info->start[2] = base + 0x00006000;
 233                         info->start[3] = base + 0x00008000;
 234                         for (i = 4; i < info->sector_count; i++) {
 235                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
 236                         }
 237                 }
 238 #endif
 239         } else {
 240                 /* set sector offsets for top boot block type */
 241                 i = info->sector_count - 1;
 242                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
 243
 244 #ifndef CFG_FLASH_16BIT
 245                         info->start[i--] = base + info->size - 0x00004000;
 246                         info->start[i--] = base + info->size - 0x00008000;
 247                         info->start[i--] = base + info->size - 0x0000C000;
 248                         info->start[i--] = base + info->size - 0x00010000;
 249                         info->start[i--] = base + info->size - 0x00014000;
 250                         info->start[i--] = base + info->size - 0x00018000;
 251                         info->start[i--] = base + info->size - 0x0001C000;
 252                         for (; i >= 0; i--) {
 253                                 info->start[i] = base + i * 0x00020000;
 254                         }
 255                 } else {
 256
 257                         info->start[i--] = base + info->size - 0x00008000;
 258                         info->start[i--] = base + info->size - 0x0000C000;
 259                         info->start[i--] = base + info->size - 0x00010000;
 260                         for (; i >= 0; i--) {
 261                                 info->start[i] = base + i * 0x00020000;
 262                         }
 263                 }
 264 #else
 265                         info->start[i--] = base + info->size - 0x00002000;
 266                         info->start[i--] = base + info->size - 0x00004000;
 267                         info->start[i--] = base + info->size - 0x00006000;
 268                         info->start[i--] = base + info->size - 0x00008000;
 269                         info->start[i--] = base + info->size - 0x0000A000;
 270                         info->start[i--] = base + info->size - 0x0000C000;
 271                         info->start[i--] = base + info->size - 0x0000E000;
 272                         for (; i >= 0; i--) {
 273                                 info->start[i] = base + i * 0x00010000;
 274                         }
 275                 } else {
 276                         info->start[i--] = base + info->size - 0x00004000;
 277                         info->start[i--] = base + info->size - 0x00006000;
 278                         info->start[i--] = base + info->size - 0x00008000;
 279                         for (; i >= 0; i--) {
 280                                 info->start[i] = base + i * 0x00010000;
 281                         }
 282                 }
 283 #endif
 284         }
 285 }
 286
 287 /*-----------------------------------------------------------------------
 288  */
 289
 290 void flash_print_info  (flash_info_t *info)
 291 {
 292         int i;
 293         uchar *boottype;
 294         uchar botboot[]=", bottom boot sect)\n";
 295         uchar topboot[]=", top boot sector)\n";
 296
 297         if (info->flash_id == FLASH_UNKNOWN) {
 298                 printf ("missing or unknown FLASH type\n");
 299                 return;
 300         }
 301
 302         switch (info->flash_id & FLASH_VENDMASK) {
 303         case FLASH_MAN_AMD:     printf ("AMD ");                break;
 304         case FLASH_MAN_FUJ:     printf ("FUJITSU ");            break;
 305         case FLASH_MAN_SST:     printf ("SST ");                break;
 306         case FLASH_MAN_STM:     printf ("STM ");                break;
 307         case FLASH_MAN_INTEL:   printf ("INTEL ");              break;
 308         default:                printf ("Unknown Vendor ");     break;
 309         }
 310
 311         if (info->flash_id & 0x0001 ) {
 312                 boottype = botboot;
 313         } else {
 314                 boottype = topboot;
 315         }
 316
 317         switch (info->flash_id & FLASH_TYPEMASK) {
 318         case FLASH_AM400B:      printf ("AM29LV400B (4 Mbit%s",boottype);
 319                                 break;
 320         case FLASH_AM400T:      printf ("AM29LV400T (4 Mbit%s",boottype);
 321                                 break;
 322         case FLASH_AM800B:      printf ("AM29LV800B (8 Mbit%s",boottype);
 323                                 break;
 324         case FLASH_AM800T:      printf ("AM29LV800T (8 Mbit%s",boottype);
 325                                 break;
 326         case FLASH_AM160B:      printf ("AM29LV160B (16 Mbit%s",boottype);
 327                                 break;
 328         case FLASH_AM160T:      printf ("AM29LV160T (16 Mbit%s",boottype);
 329                                 break;
 330         case FLASH_AM320B:      printf ("AM29LV320B (32 Mbit%s",boottype);
 331                                 break;
 332         case FLASH_AM320T:      printf ("AM29LV320T (32 Mbit%s",boottype);
 333                                 break;
 334         case FLASH_INTEL800B:   printf ("INTEL28F800B (8 Mbit%s",boottype);
 335                                 break;
 336         case FLASH_INTEL800T:   printf ("INTEL28F800T (8 Mbit%s",boottype);
 337                                 break;
 338         case FLASH_INTEL160B:   printf ("INTEL28F160B (16 Mbit%s",boottype);
 339                                 break;
 340         case FLASH_INTEL160T:   printf ("INTEL28F160T (16 Mbit%s",boottype);
 341                                 break;
 342         case FLASH_INTEL320B:   printf ("INTEL28F320B (32 Mbit%s",boottype);
 343                                 break;
 344         case FLASH_INTEL320T:   printf ("INTEL28F320T (32 Mbit%s",boottype);
 345                                 break;
 346         case FLASH_AMDL322T:    printf ("AM29DL322T (32 Mbit%s",boottype);
 347                                 break;
 348
 349 #if 0 /* enable when devices are available */
 350
 351         case FLASH_INTEL640B:   printf ("INTEL28F640B (64 Mbit%s",boottype);
 352                                 break;
 353         case FLASH_INTEL640T:   printf ("INTEL28F640T (64 Mbit%s",boottype);
 354                                 break;
 355 #endif
 356         case INTEL_ID_28F320J3A:        printf ("INTEL28F320JA3 (32 Mbit%s",boottype);
 357                                 break;
 358         case INTEL_ID_28F640J3A:        printf ("INTEL28F640JA3 (64 Mbit%s",boottype);
 359                                 break;
 360         case INTEL_ID_28F128J3A:        printf ("INTEL28F128JA3 (128 Mbit%s",boottype);
 361                                 break;
 362
 363         default:                printf ("Unknown Chip Type\n");
 364                                 break;
 365         }
 366
 367         printf ("  Size: %ld MB in %d Sectors\n",
 368                 info->size >> 20, info->sector_count);
 369
 370         printf ("  Sector Start Addresses:");
 371         for (i=0; i<info->sector_count; ++i) {
 372                 if ((i % 5) == 0)
 373                         printf ("\n   ");
 374                 printf (" %08lX%s",
 375                         info->start[i],
 376                         info->protect[i] ? " (RO)" : "     "
 377                 );
 378         }
 379         printf ("\n");
 380         return;
 381 }
 382
 383
 384 /*-----------------------------------------------------------------------
 385  */
 386
 387
 388 /*-----------------------------------------------------------------------
 389  */
 390
 391 /*
 392  * The following code cannot be run from FLASH!
 393  */
 394 ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info)
 395 {
 396         short i;
 397         ulong base = (ulong)addr;
 398         FLASH_WORD_SIZE value;
 399
 400         /* Write auto select command: read Manufacturer ID */
 401
 402
 403 #ifndef CFG_FLASH_16BIT
 404
 405         /*
 406          * Note: if it is an AMD flash and the word at addr[0000]
 407          * is 0x00890089 this routine will think it is an Intel
 408          * flash device and may(most likely) cause trouble.
 409          */
 410
 411         addr[0x0000] = 0x00900090;
 412         if(addr[0x0000] != 0x00890089){
 413                 addr[0x0555] = 0x00AA00AA;
 414                 addr[0x02AA] = 0x00550055;
 415                 addr[0x0555] = 0x00900090;
 416 #else
 417
 418         /*
 419          * Note: if it is an AMD flash and the word at addr[0000]
 420          * is 0x0089 this routine will think it is an Intel
 421          * flash device and may(most likely) cause trouble.
 422          */
 423
 424         addr[0x0000] = 0x0090;
 425
 426         if(addr[0x0000] != 0x0089){
 427                 addr[0x0555] = 0x00AA;
 428                 addr[0x02AA] = 0x0055;
 429                 addr[0x0555] = 0x0090;
 430 #endif
 431         }
 432         value = addr[0];
 433
 434         switch (value) {
 435         case (AMD_MANUFACT & FLASH_ID_MASK):
 436                 info->flash_id = FLASH_MAN_AMD;
 437                 break;
 438         case (FUJ_MANUFACT & FLASH_ID_MASK):
 439                 info->flash_id = FLASH_MAN_FUJ;
 440                 break;
 441         case (STM_MANUFACT & FLASH_ID_MASK):
 442                 info->flash_id = FLASH_MAN_STM;
 443                 break;
 444         case (SST_MANUFACT & FLASH_ID_MASK):
 445                 info->flash_id = FLASH_MAN_SST;
 446                 break;
 447         case (INTEL_MANUFACT & FLASH_ID_MASK):
 448                 info->flash_id = FLASH_MAN_INTEL;
 449                 break;
 450         default:
 451                 info->flash_id = FLASH_UNKNOWN;
 452                 info->sector_count = 0;
 453                 info->size = 0;
 454                 return (0); /* no or unknown flash */
 455
 456         }
 457
 458         value = addr[1];                        /* device ID            */
 459
 460         switch (value) {
 461
 462         case (AMD_ID_LV400T & FLASH_ID_MASK):
 463                 info->flash_id += FLASH_AM400T;
 464                 info->sector_count = 11;
 465                 info->size = 0x00100000;
 466                 break;                          /* => 1 MB              */
 467
 468         case (AMD_ID_LV400B & FLASH_ID_MASK):
 469                 info->flash_id += FLASH_AM400B;
 470                 info->sector_count = 11;
 471                 info->size = 0x00100000;
 472                 break;                          /* => 1 MB              */
 473
 474         case (AMD_ID_LV800T & FLASH_ID_MASK):
 475                 info->flash_id += FLASH_AM800T;
 476                 info->sector_count = 19;
 477                 info->size = 0x00200000;
 478                 break;                          /* => 2 MB              */
 479
 480         case (AMD_ID_LV800B & FLASH_ID_MASK):
 481                 info->flash_id += FLASH_AM800B;
 482                 info->sector_count = 19;
 483                 info->size = 0x00200000;
 484                 break;                          /* => 2 MB              */
 485
 486         case (AMD_ID_LV160T & FLASH_ID_MASK):
 487                 info->flash_id += FLASH_AM160T;
 488                 info->sector_count = 35;
 489                 info->size = 0x00400000;
 490                 break;                          /* => 4 MB              */
 491
 492         case (AMD_ID_LV160B & FLASH_ID_MASK):
 493                 info->flash_id += FLASH_AM160B;
 494                 info->sector_count = 35;
 495                 info->size = 0x00400000;
 496                 break;                          /* => 4 MB              */
 497 #if 0   /* enable when device IDs are available */
 498         case (AMD_ID_LV320T & FLASH_ID_MASK):
 499                 info->flash_id += FLASH_AM320T;
 500                 info->sector_count = 67;
 501                 info->size = 0x00800000;
 502                 break;                          /* => 8 MB              */
 503
 504         case (AMD_ID_LV320B & FLASH_ID_MASK):
 505                 info->flash_id += FLASH_AM320B;
 506                 info->sector_count = 67;
 507                 info->size = 0x00800000;
 508                 break;                          /* => 8 MB              */
 509 #endif
 510
 511         case (AMD_ID_DL322T & FLASH_ID_MASK):
 512                 info->flash_id += FLASH_AMDL322T;
 513                 info->sector_count = 71;
 514                 info->size = 0x00800000;
 515                 break;                          /* => 8 MB              */
 516
 517         case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
 518                 info->flash_id += FLASH_INTEL800T;
 519                 info->sector_count = 23;
 520                 info->size = 0x00200000;
 521                 break;                          /* => 2 MB              */
 522
 523         case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
 524                 info->flash_id += FLASH_INTEL800B;
 525                 info->sector_count = 23;
 526                 info->size = 0x00200000;
 527                 break;                          /* => 2 MB              */
 528
 529         case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
 530                 info->flash_id += FLASH_INTEL160T;
 531                 info->sector_count = 39;
 532                 info->size = 0x00400000;
 533                 break;                          /* => 4 MB              */
 534
 535         case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
 536                 info->flash_id += FLASH_INTEL160B;
 537                 info->sector_count = 39;
 538                 info->size = 0x00400000;
 539                 break;                          /* => 4 MB              */
 540
 541         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 542                 info->flash_id += FLASH_INTEL320T;
 543                 info->sector_count = 71;
 544                 info->size = 0x00800000;
 545                 break;                          /* => 8 MB              */
 546
 547         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 548                 info->flash_id += FLASH_AM320B;
 549                 info->sector_count = 71;
 550                 info->size = 0x00800000;
 551                 break;                          /* => 8 MB              */
 552
 553 #if 0 /* enable when devices are available */
 554         case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
 555                 info->flash_id += FLASH_INTEL320T;
 556                 info->sector_count = 135;
 557                 info->size = 0x01000000;
 558                 break;                          /* => 16 MB             */
 559
 560         case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
 561                 info->flash_id += FLASH_AM320B;
 562                 info->sector_count = 135;
 563                 info->size = 0x01000000;
 564                 break;                          /* => 16 MB             */
 565 #endif
 566         case (INTEL_ID_28F320J3A & FLASH_ID_MASK):
 567                 info->flash_id += FLASH_28F320J3A;
 568                 info->sector_count = 32;
 569                 info->size = 0x00400000;
 570                 break;                          /* => 32 MBit   */
 571         case (INTEL_ID_28F640J3A & FLASH_ID_MASK):
 572                 info->flash_id += FLASH_28F640J3A;
 573                 info->sector_count = 64;
 574                 info->size = 0x00800000;
 575                 break;                          /* => 64 MBit   */
 576         case (INTEL_ID_28F128J3A & FLASH_ID_MASK):
 577                 info->flash_id += FLASH_28F128J3A;
 578                 info->sector_count = 128;
 579                 info->size = 0x01000000;
 580                 break;                          /* => 128 MBit          */
 581
 582         default:
 583                 /* FIXME*/
 584                 info->flash_id = FLASH_UNKNOWN;
 585                 return (0);                     /* => no or unknown flash */
 586         }
 587
 588         flash_get_offsets(base, info);
 589
 590         /* check for protected sectors */
 591         for (i = 0; i < info->sector_count; i++) {
 592                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 593                 /* D0 = 1 if protected */
 594                 addr = (volatile FLASH_WORD_SIZE *)(info->start[i]);
 595                 info->protect[i] = addr[2] & 1;
 596         }
 597
 598         /*
 599          * Prevent writes to uninitialized FLASH.
 600          */
 601         if (info->flash_id != FLASH_UNKNOWN) {
 602                 addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 603                 if( (info->flash_id & 0xFF00) == FLASH_MAN_INTEL){
 604                         *addr = (0x00F000F0 & FLASH_ID_MASK);   /* reset bank */
 605                 } else {
 606                         *addr = (0x00FF00FF & FLASH_ID_MASK);   /* reset bank */
 607                 }
 608         }
 609
 610         return (info->size);
 611 }
 612
 613
 614 /*-----------------------------------------------------------------------
 615  */
 616
 617 int flash_erase (flash_info_t *info, int s_first, int s_last)
 618 {
 619
 620         volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);
 621         int flag, prot, sect, l_sect, barf;
 622         ulong start, now, last;
 623         int rcode = 0;
 624
 625         if ((s_first < 0) || (s_first > s_last)) {
 626                 if (info->flash_id == FLASH_UNKNOWN) {
 627                         printf ("- missing\n");
 628                 } else {
 629                         printf ("- no sectors to erase\n");
 630                 }
 631                 return 1;
 632         }
 633
 634         if ((info->flash_id == FLASH_UNKNOWN) ||
 635                 ((info->flash_id > FLASH_AMD_COMP) &&
 636                 ( (info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL ) ) ){
 637                 printf ("Can't erase unknown flash type - aborted\n");
 638                 return 1;
 639         }
 640
 641         prot = 0;
 642         for (sect=s_first; sect<=s_last; ++sect) {
 643                 if (info->protect[sect]) {
 644                         prot++;
 645                 }
 646         }
 647
 648         if (prot) {
 649                 printf ("- Warning: %d protected sectors will not be erased!\n",
 650                         prot);
 651         } else {
 652                 printf ("\n");
 653         }
 654
 655         l_sect = -1;
 656
 657         /* Disable interrupts which might cause a timeout here */
 658         flag = disable_interrupts();
 659     if(info->flash_id < FLASH_AMD_COMP) {
 660 #ifndef CFG_FLASH_16BIT
 661         addr[0x0555] = 0x00AA00AA;
 662         addr[0x02AA] = 0x00550055;
 663         addr[0x0555] = 0x00800080;
 664         addr[0x0555] = 0x00AA00AA;
 665         addr[0x02AA] = 0x00550055;
 666 #else
 667         addr[0x0555] = 0x00AA;
 668         addr[0x02AA] = 0x0055;
 669         addr[0x0555] = 0x0080;
 670         addr[0x0555] = 0x00AA;
 671         addr[0x02AA] = 0x0055;
 672 #endif
 673         /* Start erase on unprotected sectors */
 674         for (sect = s_first; sect<=s_last; sect++) {
 675                 if (info->protect[sect] == 0) { /* not protected */
 676                         addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]);
 677                         addr[0] = (0x00300030 & FLASH_ID_MASK);
 678                         l_sect = sect;
 679                 }
 680         }
 681
 682         /* re-enable interrupts if necessary */
 683         if (flag)
 684                 enable_interrupts();
 685
 686         /* wait at least 80us - let's wait 1 ms */
 687         udelay (1000);
 688
 689         /*
 690          * We wait for the last triggered sector
 691          */
 692         if (l_sect < 0)
 693                 goto DONE;
 694
 695         start = get_timer (0);
 696         last  = start;
 697         addr = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);
 698         while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=
 699                 (0x00800080&FLASH_ID_MASK)  )
 700         {
 701                 if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
 702                         printf ("Timeout\n");
 703                         return 1;
 704                 }
 705                 /* show that we're waiting */
 706                 if ((now - last) > 1000) {      /* every second */
 707                         serial_putc ('.');
 708                         last = now;
 709                 }
 710         }
 711
 712 DONE:
 713         /* reset to read mode */
 714         addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 715         addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */
 716     } else {
 717
 718
 719         for (sect = s_first; sect<=s_last; sect++) {
 720                 if (info->protect[sect] == 0) { /* not protected */
 721                         barf = 0;
 722 #ifndef CFG_FLASH_16BIT
 723                         addr = (vu_long*)(info->start[sect]);
 724                         addr[0] = 0x00200020;
 725                         addr[0] = 0x00D000D0;
 726                         while(!(addr[0] & 0x00800080)); /* wait for error or finish */
 727                         if( addr[0] & 0x003A003A) {     /* check for error */
 728                                 barf = addr[0] & 0x003A0000;
 729                                 if( barf ) {
 730                                         barf >>=16;
 731                                 } else {
 732                                         barf = addr[0] & 0x0000003A;
 733                                 }
 734                         }
 735 #else
 736                         addr = (vu_short*)(info->start[sect]);
 737                         addr[0] = 0x0020;
 738                         addr[0] = 0x00D0;
 739                         while(!(addr[0] & 0x0080));     /* wait for error or finish */
 740                         if( addr[0] & 0x003A)   /* check for error */
 741                                 barf = addr[0] & 0x003A;
 742 #endif
 743                         if(barf) {
 744                                 printf("\nFlash error in sector at %lx\n",(unsigned long)addr);
 745                                 if(barf & 0x0002) printf("Block locked, not erased.\n");
 746                                 if((barf & 0x0030) == 0x0030)
 747                                         printf("Command Sequence error.\n");
 748                                 if((barf & 0x0030) == 0x0020)
 749                                         printf("Block Erase error.\n");
 750                                 if(barf & 0x0008) printf("Vpp Low error.\n");
 751                                 rcode = 1;
 752                         } else printf(".");
 753                         l_sect = sect;
 754                 }
 755         addr = (volatile FLASH_WORD_SIZE *)info->start[0];
 756         addr[0] = (0x00FF00FF & FLASH_ID_MASK); /* reset bank */
 757
 758         }
 759
 760     }
 761         printf (" done\n");
 762         return rcode;
 763 }
 764
 765 /*-----------------------------------------------------------------------
 766  */
 767
 768 /*flash_info_t *addr2info (ulong addr)
 769 {
 770         flash_info_t *info;
 771         int i;
 772
 773         for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
 774                 if ((addr >= info->start[0]) &&
 775                     (addr < (info->start[0] + info->size)) ) {
 776                         return (info);
 777                 }
 778         }
 779
 780         return (NULL);
 781 }
 782 */
 783 /*-----------------------------------------------------------------------
 784  * Copy memory to flash.
 785  * Make sure all target addresses are within Flash bounds,
 786  * and no protected sectors are hit.
 787  * Returns:
 788  * 0 - OK
 789  * 1 - write timeout
 790  * 2 - Flash not erased
 791  * 4 - target range includes protected sectors
 792  * 8 - target address not in Flash memory
 793  */
 794
 795 /*int flash_write (uchar *src, ulong addr, ulong cnt)
 796 {
 797         int i;
 798         ulong         end        = addr + cnt - 1;
 799         flash_info_t *info_first = addr2info (addr);
 800         flash_info_t *info_last  = addr2info (end );
 801         flash_info_t *info;
 802
 803         if (cnt == 0) {
 804                 return (0);
 805         }
 806
 807         if (!info_first || !info_last) {
 808                 return (8);
 809         }
 810
 811         for (info = info_first; info <= info_last; ++info) {
 812                 ulong b_end = info->start[0] + info->size;*/    /* bank end addr */
 813 /*              short s_end = info->sector_count - 1;
 814                 for (i=0; i<info->sector_count; ++i) {
 815                         ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
 816
 817                         if ((end >= info->start[i]) && (addr < e_addr) &&
 818                             (info->protect[i] != 0) ) {
 819                                 return (4);
 820                         }
 821                 }
 822         }
 823
 824 */      /* finally write data to flash */
 825 /*      for (info = info_first; info <= info_last && cnt>0; ++info) {
 826                 ulong len;
 827
 828                 len = info->start[0] + info->size - addr;
 829                 if (len > cnt)
 830                         len = cnt;
 831                 if ((i = write_buff(info, src, addr, len)) != 0) {
 832                         return (i);
 833                 }
 834                 cnt  -= len;
 835                 addr += len;
 836                 src  += len;
 837         }
 838         return (0);
 839 }
 840 */
 841 /*-----------------------------------------------------------------------
 842  * Copy memory to flash, returns:
 843  * 0 - OK
 844  * 1 - write timeout
 845  * 2 - Flash not erased
 846  */
 847
 848 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
 849 {
 850 #ifndef CFG_FLASH_16BIT
 851         ulong cp, wp, data;
 852         int l;
 853 #else
 854         ulong cp, wp;
 855         ushort data;
 856 #endif
 857         int i, rc;
 858
 859 #ifndef CFG_FLASH_16BIT
 860
 861
 862         wp = (addr & ~3);       /* get lower word aligned address */
 863
 864         /*
 865          * handle unaligned start bytes
 866          */
 867         if ((l = addr - wp) != 0) {
 868                 data = 0;
 869                 for (i=0, cp=wp; i<l; ++i, ++cp) {
 870                         data = (data << 8) | (*(uchar *)cp);
 871                 }
 872                 for (; i<4 && cnt>0; ++i) {
 873                         data = (data << 8) | *src++;
 874                         --cnt;
 875                         ++cp;
 876                 }
 877                 for (; cnt==0 && i<4; ++i, ++cp) {
 878                         data = (data << 8) | (*(uchar *)cp);
 879                 }
 880
 881                 if ((rc = write_word(info, wp, data)) != 0) {
 882                         return (rc);
 883                 }
 884                 wp += 4;
 885         }
 886
 887         /*
 888          * handle word aligned part
 889          */
 890         while (cnt >= 4) {
 891                 data = 0;
 892                 for (i=0; i<4; ++i) {
 893                         data = (data << 8) | *src++;
 894                 }
 895                 if ((rc = write_word(info, wp, data)) != 0) {
 896                         return (rc);
 897                 }
 898                 wp  += 4;
 899                 cnt -= 4;
 900         }
 901
 902         if (cnt == 0) {
 903                 return (0);
 904         }
 905
 906         /*
 907          * handle unaligned tail bytes
 908          */
 909         data = 0;
 910         for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
 911                 data = (data << 8) | *src++;
 912                 --cnt;
 913         }
 914         for (; i<4; ++i, ++cp) {
 915                 data = (data << 8) | (*(uchar *)cp);
 916         }
 917
 918         return (write_word(info, wp, data));
 919
 920 #else
 921         wp = (addr & ~1);       /* get lower word aligned address */
 922
 923         /*
 924          * handle unaligned start byte
 925          */
 926         if (addr - wp) {
 927                 data = 0;
 928                 data = (data << 8) | *src++;
 929                 --cnt;
 930                 if ((rc = write_short(info, wp, data)) != 0) {
 931                         return (rc);
 932                 }
 933                 wp += 2;
 934         }
 935
 936         /*
 937          * handle word aligned part
 938          */
 939 /*      l = 0; used for debuging  */
 940         while (cnt >= 2) {
 941                 data = 0;
 942                 for (i=0; i<2; ++i) {
 943                         data = (data << 8) | *src++;
 944                 }
 945
 946 /*              if(!l){
 947                         printf("%x",data);
 948                         l = 1;
 949                 }  used for debuging */
 950
 951                 if ((rc = write_short(info, wp, data)) != 0) {
 952                         return (rc);
 953                 }
 954                 wp  += 2;
 955                 cnt -= 2;
 956         }
 957
 958         if (cnt == 0) {
 959                 return (0);
 960         }
 961
 962         /*
 963          * handle unaligned tail bytes
 964          */
 965         data = 0;
 966         for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
 967                 data = (data << 8) | *src++;
 968                 --cnt;
 969         }
 970         for (; i<2; ++i, ++cp) {
 971                 data = (data << 8) | (*(uchar *)cp);
 972         }
 973
 974         return (write_short(info, wp, data));
 975
 976
 977 #endif
 978 }
 979
 980 /*-----------------------------------------------------------------------
 981  * Write a word to Flash, returns:
 982  * 0 - OK
 983  * 1 - write timeout
 984  * 2 - Flash not erased
 985  */
 986 #ifndef CFG_FLASH_16BIT
 987 static int write_word (flash_info_t *info, ulong dest, ulong data)
 988 {
 989         vu_long *addr = (vu_long*)(info->start[0]);
 990         ulong start,barf;
 991         int flag;
 992
 993
 994         /* Check if Flash is (sufficiently) erased */
 995         if ((*((vu_long *)dest) & data) != data) {
 996                 return (2);
 997         }
 998
 999         /* Disable interrupts which might cause a timeout here */
1000         flag = disable_interrupts();
1001
1002         if(info->flash_id > FLASH_AMD_COMP) {
1003                 /* AMD stuff */
1004                 addr[0x0555] = 0x00AA00AA;
1005                 addr[0x02AA] = 0x00550055;
1006                 addr[0x0555] = 0x00A000A0;
1007         } else {
1008                 /* intel stuff */
1009                 *addr = 0x00400040;
1010         }
1011         *((vu_long *)dest) = data;
1012
1013         /* re-enable interrupts if necessary */
1014         if (flag)
1015                 enable_interrupts();
1016
1017         /* data polling for D7 */
1018         start = get_timer (0);
1019
1020         if(info->flash_id > FLASH_AMD_COMP) {
1021                 while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
1022                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1023                                 return (1);
1024                         }
1025                 }
1026         } else {
1027                 while(!(addr[0] & 0x00800080)) {        /* wait for error or finish */
1028                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1029                                 return (1);
1030                         }
1031
1032                 if( addr[0] & 0x003A003A) {     /* check for error */
1033                         barf = addr[0] & 0x003A0000;
1034                         if( barf ) {
1035                                 barf >>=16;
1036                         } else {
1037                                 barf = addr[0] & 0x0000003A;
1038                         }
1039                         printf("\nFlash write error at address %lx\n",(unsigned long)dest);
1040                         if(barf & 0x0002) printf("Block locked, not erased.\n");
1041                         if(barf & 0x0010) printf("Programming error.\n");
1042                         if(barf & 0x0008) printf("Vpp Low error.\n");
1043                         return(2);
1044                 }
1045         }
1046
1047         return (0);
1048 }
1049
1050 #else
1051
1052 static int write_short (flash_info_t *info, ulong dest, ushort data)
1053 {
1054         vu_short *addr = (vu_short*)(info->start[0]);
1055         ulong start,barf;
1056         int flag;
1057
1058         /* Check if Flash is (sufficiently) erased */
1059         if ((*((vu_short *)dest) & data) != data) {
1060                 return (2);
1061         }
1062
1063         /* Disable interrupts which might cause a timeout here */
1064         flag = disable_interrupts();
1065
1066         if(info->flash_id < FLASH_AMD_COMP) {
1067                 /* AMD stuff */
1068                 addr[0x0555] = 0x00AA;
1069                 addr[0x02AA] = 0x0055;
1070                 addr[0x0555] = 0x00A0;
1071         } else {
1072                 /* intel stuff */
1073                 *addr = 0x00D0;
1074                 *addr = 0x0040;
1075         }
1076         *((vu_short *)dest) = data;
1077
1078         /* re-enable interrupts if necessary */
1079         if (flag)
1080                 enable_interrupts();
1081
1082         /* data polling for D7 */
1083         start = get_timer (0);
1084
1085         if(info->flash_id < FLASH_AMD_COMP) {
1086                 /* AMD stuff */
1087                 while ((*((vu_short *)dest) & 0x0080) != (data & 0x0080)) {
1088                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
1089                                 return (1);
1090                         }
1091                 }
1092
1093         } else {
1094                 /* intel stuff */
1095                 while(!(addr[0] & 0x0080)){     /* wait for error or finish */
1096                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
1097                 }
1098
1099                 if( addr[0] & 0x003A) { /* check for error */
1100                         barf = addr[0] & 0x003A;
1101                         printf("\nFlash write error at address %lx\n",(unsigned long)dest);
1102                         if(barf & 0x0002) printf("Block locked, not erased.\n");
1103                         if(barf & 0x0010) printf("Programming error.\n");
1104                         if(barf & 0x0008) printf("Vpp Low error.\n");
1105                         return(2);
1106                 }
1107                 *addr = 0x00B0;
1108                 *addr = 0x0070;
1109                 while(!(addr[0] & 0x0080)){     /* wait for error or finish */
1110                         if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
1111                 }
1112                 *addr = 0x00FF;
1113         }
1114         return (0);
1115 }
1116
1117
1118 #endif
1119
1120 /*-----------------------------------------------------------------------
1121  */