qemu/roms/u-boot/board/amcc/yucca/flash.c

   1 /*
   2  * (C) Copyright 2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6  * Add support for Am29F016D and dynamic switch setting.
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 /*
  12  * Modified 4/5/2001
  13  * Wait for completion of each sector erase command issued
  14  * 4/5/2001
  15  * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  16  */
  17
  18 #include <common.h>
  19 #include <asm/ppc4xx.h>
  20 #include <asm/processor.h>
  21 #include <asm/ppc440.h>
  22 #include "yucca.h"
  23
  24 #ifdef DEBUG
  25 #define DEBUGF(x...) printf(x)
  26 #else
  27 #define DEBUGF(x...)
  28 #endif                          /* DEBUG */
  29
  30 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
  31
  32 /*
  33  * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
  34  */
  35 static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
  36         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 0:boot from small flash */
  37         {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
  38         {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
  39         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
  40         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
  41         {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
  42         {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
  43         {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
  44         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 8:boot from small flash */
  45 };
  46
  47 /*
  48  * include common flash code (for amcc boards)
  49  */
  50 /*-----------------------------------------------------------------------
  51  * Functions
  52  */
  53 static int write_word(flash_info_t * info, ulong dest, ulong data);
  54 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
  55 static int write_word_1(flash_info_t * info, ulong dest, ulong data);
  56 static int write_word_2(flash_info_t * info, ulong dest, ulong data);
  57 static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
  58 static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
  59 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
  60 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
  61 #endif
  62
  63 void flash_print_info(flash_info_t * info)
  64 {
  65         int i;
  66         int k;
  67         int size;
  68         int erased;
  69         volatile unsigned long *flash;
  70
  71         if (info->flash_id == FLASH_UNKNOWN) {
  72                 printf("missing or unknown FLASH type\n");
  73                 return;
  74         }
  75
  76         switch (info->flash_id & FLASH_VENDMASK) {
  77                 case FLASH_MAN_AMD:
  78                         printf("AMD ");
  79                         break;
  80                 case FLASH_MAN_STM:
  81                         printf("STM ");
  82                         break;
  83                 case FLASH_MAN_FUJ:
  84                         printf("FUJITSU ");
  85                         break;
  86                 case FLASH_MAN_SST:
  87                         printf("SST ");
  88                         break;
  89                 case FLASH_MAN_MX:
  90                         printf("MIXC ");
  91                         break;
  92                 default:
  93                         printf("Unknown Vendor ");
  94                         break;
  95         }
  96
  97         switch (info->flash_id & FLASH_TYPEMASK) {
  98                 case FLASH_AM040:
  99                         printf("AM29F040 (512 Kbit, uniform sector size)\n");
 100                         break;
 101                 case FLASH_AM400B:
 102                         printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 103                         break;
 104                 case FLASH_AM400T:
 105                         printf("AM29LV400T (4 Mbit, top boot sector)\n");
 106                         break;
 107                 case FLASH_AM800B:
 108                         printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 109                         break;
 110                 case FLASH_AM800T:
 111                         printf("AM29LV800T (8 Mbit, top boot sector)\n");
 112                         break;
 113                 case FLASH_AMD016:
 114                         printf("AM29F016D (16 Mbit, uniform sector size)\n");
 115                         break;
 116                 case FLASH_AM160B:
 117                         printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 118                         break;
 119                 case FLASH_AM160T:
 120                         printf("AM29LV160T (16 Mbit, top boot sector)\n");
 121                         break;
 122                 case FLASH_AM320B:
 123                         printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 124                         break;
 125                 case FLASH_AM320T:
 126                         printf("AM29LV320T (32 Mbit, top boot sector)\n");
 127                         break;
 128                 case FLASH_AM033C:
 129                         printf("AM29LV033C (32 Mbit, top boot sector)\n");
 130                         break;
 131                 case FLASH_SST800A:
 132                         printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 133                         break;
 134                 case FLASH_SST160A:
 135                         printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 136                         break;
 137                 case FLASH_STMW320DT:
 138                         printf ("M29W320DT (32 M, top sector)\n");
 139                         break;
 140                 case FLASH_MXLV320T:
 141                         printf ("MXLV320T (32 Mbit, top sector)\n");
 142                         break;
 143                 default:
 144                         printf("Unknown Chip Type\n");
 145                         break;
 146         }
 147
 148         printf("  Size: %ld KB in %d Sectors\n",
 149                         info->size >> 10, info->sector_count);
 150
 151         printf("  Sector Start Addresses:");
 152         for (i = 0; i < info->sector_count; ++i) {
 153                 /*
 154                  * Check if whole sector is erased
 155                  */
 156                 if (i != (info->sector_count - 1))
 157                         size = info->start[i + 1] - info->start[i];
 158                 else
 159                         size = info->start[0] + info->size - info->start[i];
 160                 erased = 1;
 161                 flash = (volatile unsigned long *)info->start[i];
 162                 size = size >> 2;       /* divide by 4 for longword access */
 163                 for (k = 0; k < size; k++) {
 164                         if (*flash++ != 0xffffffff) {
 165                                 erased = 0;
 166                                 break;
 167                         }
 168                 }
 169
 170                 if ((i % 5) == 0)
 171                         printf("\n   ");
 172                 printf(" %08lX%s%s",
 173                                 info->start[i],
 174                                 erased ? " E" : "  ",
 175                                 info->protect[i] ? "RO " : "   ");
 176         }
 177         printf("\n");
 178         return;
 179 }
 180
 181
 182 /*
 183  * The following code cannot be run from FLASH!
 184  */
 185 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 186 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 187 {
 188         /* bit 0 used for big flash marking */
 189         if ((ulong)addr & 0x1)
 190                 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
 191         else
 192                 return flash_get_size_1(addr, info);
 193 }
 194
 195 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
 196 #else
 197 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 198 #endif
 199 {
 200         short i;
 201         CONFIG_SYS_FLASH_WORD_SIZE value;
 202         ulong base = (ulong) addr;
 203         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 204
 205         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 206
 207         /* Write auto select command: read Manufacturer ID */
 208         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 209         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 210         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 211         udelay(1000);
 212
 213         value = addr2[0];
 214         DEBUGF("FLASH MANUFACT: %x\n", value);
 215
 216         switch (value) {
 217                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 218                         info->flash_id = FLASH_MAN_AMD;
 219                         break;
 220                 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 221                         info->flash_id = FLASH_MAN_FUJ;
 222                         break;
 223                 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 224                         info->flash_id = FLASH_MAN_SST;
 225                         break;
 226                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 227                         info->flash_id = FLASH_MAN_STM;
 228                         break;
 229                 default:
 230                         info->flash_id = FLASH_UNKNOWN;
 231                         info->sector_count = 0;
 232                         info->size = 0;
 233                         return (0);     /* no or unknown flash  */
 234         }
 235
 236         value = addr2[1];       /* device ID            */
 237         DEBUGF("\nFLASH DEVICEID: %x\n", value);
 238
 239         switch (value) {
 240                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
 241                         info->flash_id += FLASH_AM040;
 242                         info->sector_count = 8;
 243                         info->size = 0x0080000; /* => 512 ko */
 244                         break;
 245
 246                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
 247                         info->flash_id += FLASH_AM040;
 248                         info->sector_count = 8;
 249                         info->size = 0x0080000; /* => 512 ko */
 250                         break;
 251
 252                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
 253                         info->flash_id += FLASH_AM040;
 254                         info->sector_count = 8;
 255                         info->size = 0x0080000; /* => 512 ko */
 256                         break;
 257
 258                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
 259                         info->flash_id += FLASH_AMD016;
 260                         info->sector_count = 32;
 261                         info->size = 0x00200000;
 262                         break;          /* => 2 MB              */
 263
 264                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
 265                         info->flash_id += FLASH_AMDLV033C;
 266                         info->sector_count = 64;
 267                         info->size = 0x00400000;
 268                         break;          /* => 4 MB              */
 269
 270                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
 271                         info->flash_id += FLASH_AM400T;
 272                         info->sector_count = 11;
 273                         info->size = 0x00080000;
 274                         break;          /* => 0.5 MB            */
 275
 276                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
 277                         info->flash_id += FLASH_AM400B;
 278                         info->sector_count = 11;
 279                         info->size = 0x00080000;
 280                         break;          /* => 0.5 MB            */
 281
 282                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
 283                         info->flash_id += FLASH_AM800T;
 284                         info->sector_count = 19;
 285                         info->size = 0x00100000;
 286                         break;          /* => 1 MB              */
 287
 288                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
 289                         info->flash_id += FLASH_AM800B;
 290                         info->sector_count = 19;
 291                         info->size = 0x00100000;
 292                         break;          /* => 1 MB              */
 293
 294                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
 295                         info->flash_id += FLASH_AM160T;
 296                         info->sector_count = 35;
 297                         info->size = 0x00200000;
 298                         break;          /* => 2 MB              */
 299
 300                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
 301                         info->flash_id += FLASH_AM160B;
 302                         info->sector_count = 35;
 303                         info->size = 0x00200000;
 304                         break;          /* => 2 MB              */
 305
 306                 default:
 307                         info->flash_id = FLASH_UNKNOWN;
 308                         return (0);     /* => no or unknown flash */
 309         }
 310
 311         /* set up sector start address table */
 312         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 313                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 314                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 315                 for (i = 0; i < info->sector_count; i++)
 316                         info->start[i] = base + (i * 0x00010000);
 317         } else {
 318                 if (info->flash_id & FLASH_BTYPE) {
 319                         /* set sector offsets for bottom boot block type        */
 320                         info->start[0] = base + 0x00000000;
 321                         info->start[1] = base + 0x00004000;
 322                         info->start[2] = base + 0x00006000;
 323                         info->start[3] = base + 0x00008000;
 324                         for (i = 4; i < info->sector_count; i++) {
 325                                 info->start[i] =
 326                                         base + (i * 0x00010000) - 0x00030000;
 327                         }
 328                 } else {
 329                         /* set sector offsets for top boot block type           */
 330                         i = info->sector_count - 1;
 331                         info->start[i--] = base + info->size - 0x00004000;
 332                         info->start[i--] = base + info->size - 0x00006000;
 333                         info->start[i--] = base + info->size - 0x00008000;
 334                         for (; i >= 0; i--) {
 335                                 info->start[i] = base + i * 0x00010000;
 336                         }
 337                 }
 338         }
 339
 340         /* check for protected sectors */
 341         for (i = 0; i < info->sector_count; i++) {
 342                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 343                 /* D0 = 1 if protected */
 344                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 345
 346                 /* For AMD29033C flash we need to resend the command of *
 347                  * reading flash protection for upper 8 Mb of flash     */
 348                 if (i == 32) {
 349                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 350                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 351                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 352                 }
 353
 354                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 355                         info->protect[i] = 0;
 356                 else
 357                         info->protect[i] = addr2[2] & 1;
 358         }
 359
 360         /* issue bank reset to return to read mode */
 361         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 362
 363         return (info->size);
 364 }
 365
 366 static int wait_for_DQ7_1(flash_info_t * info, int sect)
 367 {
 368         ulong start, now, last;
 369         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 370                 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 371
 372         start = get_timer(0);
 373         last = start;
 374         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 375                         (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 376                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 377                         printf("Timeout\n");
 378                         return -1;
 379                 }
 380                 /* show that we're waiting */
 381                 if ((now - last) > 1000) {      /* every second */
 382                         putc('.');
 383                         last = now;
 384                 }
 385         }
 386         return 0;
 387 }
 388
 389 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 390 int flash_erase(flash_info_t * info, int s_first, int s_last)
 391 {
 392         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 393                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 394                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 395                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 396                 return flash_erase_2(info, s_first, s_last);
 397         } else {
 398                 return flash_erase_1(info, s_first, s_last);
 399         }
 400 }
 401
 402 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
 403 #else
 404 int flash_erase(flash_info_t * info, int s_first, int s_last)
 405 #endif
 406 {
 407         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 408         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 409         int flag, prot, sect;
 410         int i;
 411
 412         if ((s_first < 0) || (s_first > s_last)) {
 413                 if (info->flash_id == FLASH_UNKNOWN)
 414                         printf("- missing\n");
 415                 else
 416                         printf("- no sectors to erase\n");
 417                 return 1;
 418         }
 419
 420         if (info->flash_id == FLASH_UNKNOWN) {
 421                 printf("Can't erase unknown flash type - aborted\n");
 422                 return 1;
 423         }
 424
 425         prot = 0;
 426         for (sect = s_first; sect <= s_last; ++sect) {
 427                 if (info->protect[sect])
 428                         prot++;
 429         }
 430
 431         if (prot)
 432                 printf("- Warning: %d protected sectors will not be erased!", prot);
 433
 434         printf("\n");
 435
 436         /* Disable interrupts which might cause a timeout here */
 437         flag = disable_interrupts();
 438
 439         /* Start erase on unprotected sectors */
 440         for (sect = s_first; sect <= s_last; sect++) {
 441                 if (info->protect[sect] == 0) { /* not protected */
 442                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 443
 444                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 445                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 446                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 447                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 448                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 449                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 450                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 451                                 for (i = 0; i < 50; i++)
 452                                         udelay(1000);   /* wait 1 ms */
 453                         } else {
 454                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 455                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 456                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 457                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 458                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 459                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 460                         }
 461                         /*
 462                          * Wait for each sector to complete, it's more
 463                          * reliable.  According to AMD Spec, you must
 464                          * issue all erase commands within a specified
 465                          * timeout.  This has been seen to fail, especially
 466                          * if printf()s are included (for debug)!!
 467                          */
 468                         wait_for_DQ7_1(info, sect);
 469                 }
 470         }
 471
 472         /* re-enable interrupts if necessary */
 473         if (flag)
 474                 enable_interrupts();
 475
 476         /* wait at least 80us - let's wait 1 ms */
 477         udelay(1000);
 478
 479         /* reset to read mode */
 480         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 481         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 482
 483         printf(" done\n");
 484         return 0;
 485 }
 486
 487 /*-----------------------------------------------------------------------
 488  * Copy memory to flash, returns:
 489  * 0 - OK
 490  * 1 - write timeout
 491  * 2 - Flash not erased
 492  */
 493 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 494 {
 495         ulong cp, wp, data;
 496         int i, l, rc;
 497
 498         wp = (addr & ~3);       /* get lower word aligned address */
 499
 500         /*
 501          * handle unaligned start bytes
 502          */
 503         if ((l = addr - wp) != 0) {
 504                 data = 0;
 505                 for (i = 0, cp = wp; i < l; ++i, ++cp)
 506                         data = (data << 8) | (*(uchar *) cp);
 507
 508                 for (; i < 4 && cnt > 0; ++i) {
 509                         data = (data << 8) | *src++;
 510                         --cnt;
 511                         ++cp;
 512                 }
 513
 514                 for (; cnt == 0 && i < 4; ++i, ++cp)
 515                         data = (data << 8) | (*(uchar *) cp);
 516
 517                 if ((rc = write_word(info, wp, data)) != 0)
 518                         return (rc);
 519
 520                 wp += 4;
 521         }
 522
 523         /*
 524          * handle word aligned part
 525          */
 526         while (cnt >= 4) {
 527                 data = 0;
 528                 for (i = 0; i < 4; ++i)
 529                         data = (data << 8) | *src++;
 530
 531                 if ((rc = write_word(info, wp, data)) != 0)
 532                         return (rc);
 533
 534                 wp += 4;
 535                 cnt -= 4;
 536         }
 537
 538         if (cnt == 0)
 539                 return (0);
 540
 541         /*
 542          * handle unaligned tail bytes
 543          */
 544         data = 0;
 545         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 546                 data = (data << 8) | *src++;
 547                 --cnt;
 548         }
 549         for (; i < 4; ++i, ++cp)
 550                 data = (data << 8) | (*(uchar *) cp);
 551
 552         return (write_word(info, wp, data));
 553 }
 554
 555 /*-----------------------------------------------------------------------
 556  * Copy memory to flash, returns:
 557  * 0 - OK
 558  * 1 - write timeout
 559  * 2 - Flash not erased
 560  */
 561 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 562 static int write_word(flash_info_t * info, ulong dest, ulong data)
 563 {
 564         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 565                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 566                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 567                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 568                 return write_word_2(info, dest, data);
 569         } else {
 570                 return write_word_1(info, dest, data);
 571         }
 572 }
 573
 574 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 575 #else
 576 static int write_word(flash_info_t * info, ulong dest, ulong data)
 577 #endif
 578 {
 579         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 580         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 581         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 582         ulong start;
 583         int i, flag;
 584
 585         /* Check if Flash is (sufficiently) erased */
 586         if ((*((vu_long *)dest) & data) != data)
 587                 return (2);
 588
 589         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 590                 /* Disable interrupts which might cause a timeout here */
 591                 flag = disable_interrupts();
 592
 593                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 594                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 595                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 596
 597                 dest2[i] = data2[i];
 598
 599                 /* re-enable interrupts if necessary */
 600                 if (flag)
 601                         enable_interrupts();
 602
 603                 /* data polling for D7 */
 604                 start = get_timer(0);
 605                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 606                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 607
 608                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 609                                 return (1);
 610                 }
 611         }
 612
 613         return (0);
 614 }
 615
 616 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 617
 618 #undef  CONFIG_SYS_FLASH_WORD_SIZE
 619 #define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 620
 621 /*
 622  * The following code cannot be run from FLASH!
 623  */
 624 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 625 {
 626         short i;
 627         int n;
 628         CONFIG_SYS_FLASH_WORD_SIZE value;
 629         ulong base = (ulong) addr;
 630         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 631
 632         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 633
 634         /* issue bank reset to return to read mode */
 635         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 636         /* Write auto select command: read Manufacturer ID */
 637         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 638         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 639         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 640         udelay(1000);
 641
 642         value = addr2[0];
 643         DEBUGF("FLASH MANUFACT: %x\n", value);
 644
 645         switch (value) {
 646                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 647                         info->flash_id = FLASH_MAN_AMD;
 648                         break;
 649                 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 650                         info->flash_id = FLASH_MAN_FUJ;
 651                         break;
 652                 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 653                         info->flash_id = FLASH_MAN_SST;
 654                         break;
 655                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 656                         info->flash_id = FLASH_MAN_STM;
 657                         break;
 658                 case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 659                         info->flash_id = FLASH_MAN_MX;
 660                         break;
 661                 default:
 662                         info->flash_id = FLASH_UNKNOWN;
 663                         info->sector_count = 0;
 664                         info->size = 0;
 665                         return (0);     /* no or unknown flash  */
 666         }
 667
 668         value = addr2[1];       /* device ID            */
 669         DEBUGF("\nFLASH DEVICEID: %x\n", value);
 670
 671         switch (value) {
 672                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 673                         info->flash_id += FLASH_AM320T;
 674                         info->sector_count = 71;
 675                         info->size = 0x00400000;
 676                         break;  /* => 4 MB      */
 677                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 678                         info->flash_id += FLASH_AM320B;
 679                         info->sector_count = 71;
 680                         info->size = 0x00400000;
 681                         break;  /* => 4 MB      */
 682                 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 683                         info->flash_id += FLASH_STMW320DT;
 684                         info->sector_count = 67;
 685                         info->size = 0x00400000;
 686                         break;  /* => 4 MB      */
 687                 case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 688                         info->flash_id += FLASH_MXLV320T;
 689                         info->sector_count = 71;
 690                         info->size = 0x00400000;
 691                         break;  /* => 4 MB      */
 692                 default:
 693                         info->flash_id = FLASH_UNKNOWN;
 694                         return (0);     /* => no or unknown flash */
 695         }
 696
 697         /* set up sector start address table */
 698         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 699                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 700                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 701                 for (i = 0; i < info->sector_count; i++)
 702                         info->start[i] = base + (i * 0x00010000);
 703         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 704                 /* set sector offsets for top boot block type           */
 705                 base += info->size;
 706                 i = info->sector_count;
 707                 /*  1 x 16k boot sector */
 708                 base -= 16 << 10;
 709                 --i;
 710                 info->start[i] = base;
 711                 /*  2 x 8k  boot sectors */
 712                 for (n = 0; n < 2; ++n) {
 713                         base -= 8 << 10;
 714                         --i;
 715                         info->start[i] = base;
 716                 }
 717                 /*  1 x 32k boot sector */
 718                 base -= 32 << 10;
 719                 --i;
 720                 info->start[i] = base;
 721
 722                 while (i > 0) {                 /* 64k regular sectors  */
 723                         base -= 64 << 10;
 724                         --i;
 725                         info->start[i] = base;
 726                 }
 727         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 728                 i = info->sector_count - 1;
 729                 info->start[i--] = base + info->size - 0x00002000;
 730                 info->start[i--] = base + info->size - 0x00004000;
 731                 info->start[i--] = base + info->size - 0x00006000;
 732                 info->start[i--] = base + info->size - 0x00008000;
 733                 info->start[i--] = base + info->size - 0x0000a000;
 734                 info->start[i--] = base + info->size - 0x0000c000;
 735                 info->start[i--] = base + info->size - 0x0000e000;
 736                 info->start[i--] = base + info->size - 0x00010000;
 737
 738                 for (; i >= 0; i--)
 739                         info->start[i] = base + i * 0x00010000;
 740         } else {
 741                 if (info->flash_id & FLASH_BTYPE) {
 742                         /* set sector offsets for bottom boot block type        */
 743                         info->start[0] = base + 0x00000000;
 744                         info->start[1] = base + 0x00004000;
 745                         info->start[2] = base + 0x00006000;
 746                         info->start[3] = base + 0x00008000;
 747
 748                         for (i = 4; i < info->sector_count; i++)
 749                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
 750                 } else {
 751                         /* set sector offsets for top boot block type           */
 752                         i = info->sector_count - 1;
 753                         info->start[i--] = base + info->size - 0x00004000;
 754                         info->start[i--] = base + info->size - 0x00006000;
 755                         info->start[i--] = base + info->size - 0x00008000;
 756
 757                         for (; i >= 0; i--)
 758                                 info->start[i] = base + i * 0x00010000;
 759                 }
 760         }
 761
 762         /* check for protected sectors */
 763         for (i = 0; i < info->sector_count; i++) {
 764                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 765                 /* D0 = 1 if protected */
 766                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 767
 768                 /* For AMD29033C flash we need to resend the command of *
 769                  * reading flash protection for upper 8 Mb of flash     */
 770                 if (i == 32) {
 771                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 772                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 773                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 774                 }
 775
 776                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 777                         info->protect[i] = 0;
 778                 else
 779                         info->protect[i] = addr2[2] & 1;
 780         }
 781
 782         /* issue bank reset to return to read mode */
 783         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 784
 785         return (info->size);
 786 }
 787
 788 static int wait_for_DQ7_2(flash_info_t * info, int sect)
 789 {
 790         ulong start, now, last;
 791         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 792                 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 793
 794         start = get_timer(0);
 795         last = start;
 796         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 797                         (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 798                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 799                         printf("Timeout\n");
 800                         return -1;
 801                 }
 802                 /* show that we're waiting */
 803                 if ((now - last) > 1000) {      /* every second */
 804                         putc('.');
 805                         last = now;
 806                 }
 807         }
 808         return 0;
 809 }
 810
 811 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 812 {
 813         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 814         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 815         int flag, prot, sect;
 816         int i;
 817
 818         if ((s_first < 0) || (s_first > s_last)) {
 819                 if (info->flash_id == FLASH_UNKNOWN)
 820                         printf("- missing\n");
 821                 else
 822                         printf("- no sectors to erase\n");
 823                 return 1;
 824         }
 825
 826         if (info->flash_id == FLASH_UNKNOWN) {
 827                 printf("Can't erase unknown flash type - aborted\n");
 828                 return 1;
 829         }
 830
 831         prot = 0;
 832         for (sect = s_first; sect <= s_last; ++sect) {
 833                 if (info->protect[sect])
 834                         prot++;
 835         }
 836
 837         if (prot)
 838                 printf("- Warning: %d protected sectors will not be erased!",   prot);
 839
 840         printf("\n");
 841
 842         /* Disable interrupts which might cause a timeout here */
 843         flag = disable_interrupts();
 844
 845         /* Start erase on unprotected sectors */
 846         for (sect = s_first; sect <= s_last; sect++) {
 847                 if (info->protect[sect] == 0) { /* not protected */
 848                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 849
 850                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 851                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 852                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 853                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 854                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 855                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 856                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 857                                 for (i = 0; i < 50; i++)
 858                                         udelay(1000);   /* wait 1 ms */
 859                         } else {
 860                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 861                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 862                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 863                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 864                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 865                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 866                         }
 867                         /*
 868                          * Wait for each sector to complete, it's more
 869                          * reliable.  According to AMD Spec, you must
 870                          * issue all erase commands within a specified
 871                          * timeout.  This has been seen to fail, especially
 872                          * if printf()s are included (for debug)!!
 873                          */
 874                         wait_for_DQ7_2(info, sect);
 875                 }
 876         }
 877
 878         /* re-enable interrupts if necessary */
 879         if (flag)
 880                 enable_interrupts();
 881
 882         /* wait at least 80us - let's wait 1 ms */
 883         udelay(1000);
 884
 885         /* reset to read mode */
 886         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 887         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 888
 889         printf(" done\n");
 890         return 0;
 891 }
 892
 893 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 894 {
 895         ulong *data_ptr = &data;
 896         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 897         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 898         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 899         ulong start;
 900         int i;
 901
 902         /* Check if Flash is (sufficiently) erased */
 903         if ((*((vu_long *)dest) & data) != data)
 904                 return (2);
 905
 906         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 907                 int flag;
 908
 909                 /* Disable interrupts which might cause a timeout here */
 910                 flag = disable_interrupts();
 911
 912                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 913                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 914                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 915
 916                 dest2[i] = data2[i];
 917
 918                 /* re-enable interrupts if necessary */
 919                 if (flag)
 920                         enable_interrupts();
 921
 922                 /* data polling for D7 */
 923                 start = get_timer(0);
 924                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 925                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 926
 927                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 928                                 return (1);
 929                 }
 930         }
 931
 932         return (0);
 933 }
 934 #endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 935
 936 /*-----------------------------------------------------------------------
 937  * Functions
 938  */
 939 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 940 static int write_word(flash_info_t * info, ulong dest, ulong data);
 941
 942 /*-----------------------------------------------------------------------
 943  */
 944
 945 unsigned long flash_init(void)
 946 {
 947         unsigned long total_b = 0;
 948         unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 949         unsigned short index = 0;
 950         int i;
 951         unsigned long val;
 952         unsigned long ebc_boot_size;
 953         unsigned long boot_selection;
 954
 955         mfsdr(sdr_pstrp0, val);
 956         index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 957
 958         if ((index == 0xc) || (index == 8)) {
 959                 /*
 960                  * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 961                  * Read Serial Device Strap Register1 in PPC440SPe
 962                  */
 963                 mfsdr(SDR0_SDSTP1, val);
 964                 boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 965                 ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 966
 967                 switch(boot_selection) {
 968                         case SDR0_SDSTP1_BOOT_SEL_EBC:
 969                                 switch(ebc_boot_size) {
 970                                         case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 971                                                 index = 3;
 972                                                 break;
 973                                         case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 974                                                 index = 0;
 975                                                 break;
 976                                 }
 977                                 break;
 978
 979                         case SDR0_SDSTP1_BOOT_SEL_PCI:
 980                                 index = 1;
 981                                 break;
 982
 983                 }
 984         } /*else if (index == 0) {*/
 985 /*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
 986 /*                      index = 8;*/ /* sram below op code flash -> new index 8*/
 987 /*      }*/
 988
 989         DEBUGF("\n");
 990         DEBUGF("FLASH: Index: %d\n", index);
 991
 992         /* Init: no FLASHes known */
 993         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
 994                 flash_info[i].flash_id = FLASH_UNKNOWN;
 995                 flash_info[i].sector_count = -1;
 996                 flash_info[i].size = 0;
 997
 998                 /* check whether the address is 0 */
 999                 if (flash_addr_table[index][i] == 0)
1000                         continue;
1001
1002                 /* call flash_get_size() to initialize sector address */
1003                 size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1004                                 &flash_info[i]);
1005
1006                 flash_info[i].size = size_b[i];
1007
1008                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1009                         printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1010                                         i, size_b[i], size_b[i] << 20);
1011                         flash_info[i].sector_count = -1;
1012                         flash_info[i].size = 0;
1013                 }
1014
1015                 /* Monitor protection ON by default */
1016                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
1017                                     CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
1018                                     &flash_info[i]);
1019 #if defined(CONFIG_ENV_IS_IN_FLASH)
1020                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
1021                                     CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1022                                     &flash_info[i]);
1023 #if defined(CONFIG_ENV_ADDR_REDUND)
1024                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
1025                                     CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
1026                                     &flash_info[i]);
1027 #endif
1028 #endif
1029                 total_b += flash_info[i].size;
1030         }
1031
1032         return total_b;
1033 }