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  * 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 /*
  28  * Modified 4/5/2001
  29  * Wait for completion of each sector erase command issued
  30  * 4/5/2001
  31  * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  32  */
  33
  34 #include <common.h>
  35 #include <asm/ppc4xx.h>
  36 #include <asm/processor.h>
  37 #include <asm/ppc440.h>
  38 #include "yucca.h"
  39
  40 #ifdef DEBUG
  41 #define DEBUGF(x...) printf(x)
  42 #else
  43 #define DEBUGF(x...)
  44 #endif                          /* DEBUG */
  45
  46 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips */
  47
  48 /*
  49  * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
  50  */
  51 static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
  52         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 0:boot from small flash */
  53         {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
  54         {0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
  55         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
  56         {0xe7F00000, 0xe7F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
  57         {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
  58         {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
  59         {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
  60         {0xfff00000, 0xfff80000, 0xe7c00001}, /* 8:boot from small flash */
  61 };
  62
  63 /*
  64  * include common flash code (for amcc boards)
  65  */
  66 /*-----------------------------------------------------------------------
  67  * Functions
  68  */
  69 static int write_word(flash_info_t * info, ulong dest, ulong data);
  70 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
  71 static int write_word_1(flash_info_t * info, ulong dest, ulong data);
  72 static int write_word_2(flash_info_t * info, ulong dest, ulong data);
  73 static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
  74 static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
  75 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
  76 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
  77 #endif
  78
  79 void flash_print_info(flash_info_t * info)
  80 {
  81         int i;
  82         int k;
  83         int size;
  84         int erased;
  85         volatile unsigned long *flash;
  86
  87         if (info->flash_id == FLASH_UNKNOWN) {
  88                 printf("missing or unknown FLASH type\n");
  89                 return;
  90         }
  91
  92         switch (info->flash_id & FLASH_VENDMASK) {
  93                 case FLASH_MAN_AMD:
  94                         printf("AMD ");
  95                         break;
  96                 case FLASH_MAN_STM:
  97                         printf("STM ");
  98                         break;
  99                 case FLASH_MAN_FUJ:
 100                         printf("FUJITSU ");
 101                         break;
 102                 case FLASH_MAN_SST:
 103                         printf("SST ");
 104                         break;
 105                 case FLASH_MAN_MX:
 106                         printf("MIXC ");
 107                         break;
 108                 default:
 109                         printf("Unknown Vendor ");
 110                         break;
 111         }
 112
 113         switch (info->flash_id & FLASH_TYPEMASK) {
 114                 case FLASH_AM040:
 115                         printf("AM29F040 (512 Kbit, uniform sector size)\n");
 116                         break;
 117                 case FLASH_AM400B:
 118                         printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
 119                         break;
 120                 case FLASH_AM400T:
 121                         printf("AM29LV400T (4 Mbit, top boot sector)\n");
 122                         break;
 123                 case FLASH_AM800B:
 124                         printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
 125                         break;
 126                 case FLASH_AM800T:
 127                         printf("AM29LV800T (8 Mbit, top boot sector)\n");
 128                         break;
 129                 case FLASH_AMD016:
 130                         printf("AM29F016D (16 Mbit, uniform sector size)\n");
 131                         break;
 132                 case FLASH_AM160B:
 133                         printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
 134                         break;
 135                 case FLASH_AM160T:
 136                         printf("AM29LV160T (16 Mbit, top boot sector)\n");
 137                         break;
 138                 case FLASH_AM320B:
 139                         printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
 140                         break;
 141                 case FLASH_AM320T:
 142                         printf("AM29LV320T (32 Mbit, top boot sector)\n");
 143                         break;
 144                 case FLASH_AM033C:
 145                         printf("AM29LV033C (32 Mbit, top boot sector)\n");
 146                         break;
 147                 case FLASH_SST800A:
 148                         printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
 149                         break;
 150                 case FLASH_SST160A:
 151                         printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
 152                         break;
 153                 case FLASH_STMW320DT:
 154                         printf ("M29W320DT (32 M, top sector)\n");
 155                         break;
 156                 case FLASH_MXLV320T:
 157                         printf ("MXLV320T (32 Mbit, top sector)\n");
 158                         break;
 159                 default:
 160                         printf("Unknown Chip Type\n");
 161                         break;
 162         }
 163
 164         printf("  Size: %ld KB in %d Sectors\n",
 165                         info->size >> 10, info->sector_count);
 166
 167         printf("  Sector Start Addresses:");
 168         for (i = 0; i < info->sector_count; ++i) {
 169                 /*
 170                  * Check if whole sector is erased
 171                  */
 172                 if (i != (info->sector_count - 1))
 173                         size = info->start[i + 1] - info->start[i];
 174                 else
 175                         size = info->start[0] + info->size - info->start[i];
 176                 erased = 1;
 177                 flash = (volatile unsigned long *)info->start[i];
 178                 size = size >> 2;       /* divide by 4 for longword access */
 179                 for (k = 0; k < size; k++) {
 180                         if (*flash++ != 0xffffffff) {
 181                                 erased = 0;
 182                                 break;
 183                         }
 184                 }
 185
 186                 if ((i % 5) == 0)
 187                         printf("\n   ");
 188                 printf(" %08lX%s%s",
 189                                 info->start[i],
 190                                 erased ? " E" : "  ",
 191                                 info->protect[i] ? "RO " : "   ");
 192         }
 193         printf("\n");
 194         return;
 195 }
 196
 197
 198 /*
 199  * The following code cannot be run from FLASH!
 200  */
 201 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 202 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 203 {
 204         /* bit 0 used for big flash marking */
 205         if ((ulong)addr & 0x1)
 206                 return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
 207         else
 208                 return flash_get_size_1(addr, info);
 209 }
 210
 211 static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
 212 #else
 213 static ulong flash_get_size(vu_long * addr, flash_info_t * info)
 214 #endif
 215 {
 216         short i;
 217         CONFIG_SYS_FLASH_WORD_SIZE value;
 218         ulong base = (ulong) addr;
 219         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 220
 221         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 222
 223         /* Write auto select command: read Manufacturer ID */
 224         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 225         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 226         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 227         udelay(1000);
 228
 229         value = addr2[0];
 230         DEBUGF("FLASH MANUFACT: %x\n", value);
 231
 232         switch (value) {
 233                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 234                         info->flash_id = FLASH_MAN_AMD;
 235                         break;
 236                 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 237                         info->flash_id = FLASH_MAN_FUJ;
 238                         break;
 239                 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 240                         info->flash_id = FLASH_MAN_SST;
 241                         break;
 242                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 243                         info->flash_id = FLASH_MAN_STM;
 244                         break;
 245                 default:
 246                         info->flash_id = FLASH_UNKNOWN;
 247                         info->sector_count = 0;
 248                         info->size = 0;
 249                         return (0);     /* no or unknown flash  */
 250         }
 251
 252         value = addr2[1];       /* device ID            */
 253         DEBUGF("\nFLASH DEVICEID: %x\n", value);
 254
 255         switch (value) {
 256                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
 257                         info->flash_id += FLASH_AM040;
 258                         info->sector_count = 8;
 259                         info->size = 0x0080000; /* => 512 ko */
 260                         break;
 261
 262                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
 263                         info->flash_id += FLASH_AM040;
 264                         info->sector_count = 8;
 265                         info->size = 0x0080000; /* => 512 ko */
 266                         break;
 267
 268                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
 269                         info->flash_id += FLASH_AM040;
 270                         info->sector_count = 8;
 271                         info->size = 0x0080000; /* => 512 ko */
 272                         break;
 273
 274                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
 275                         info->flash_id += FLASH_AMD016;
 276                         info->sector_count = 32;
 277                         info->size = 0x00200000;
 278                         break;          /* => 2 MB              */
 279
 280                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
 281                         info->flash_id += FLASH_AMDLV033C;
 282                         info->sector_count = 64;
 283                         info->size = 0x00400000;
 284                         break;          /* => 4 MB              */
 285
 286                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
 287                         info->flash_id += FLASH_AM400T;
 288                         info->sector_count = 11;
 289                         info->size = 0x00080000;
 290                         break;          /* => 0.5 MB            */
 291
 292                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
 293                         info->flash_id += FLASH_AM400B;
 294                         info->sector_count = 11;
 295                         info->size = 0x00080000;
 296                         break;          /* => 0.5 MB            */
 297
 298                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
 299                         info->flash_id += FLASH_AM800T;
 300                         info->sector_count = 19;
 301                         info->size = 0x00100000;
 302                         break;          /* => 1 MB              */
 303
 304                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
 305                         info->flash_id += FLASH_AM800B;
 306                         info->sector_count = 19;
 307                         info->size = 0x00100000;
 308                         break;          /* => 1 MB              */
 309
 310                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
 311                         info->flash_id += FLASH_AM160T;
 312                         info->sector_count = 35;
 313                         info->size = 0x00200000;
 314                         break;          /* => 2 MB              */
 315
 316                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
 317                         info->flash_id += FLASH_AM160B;
 318                         info->sector_count = 35;
 319                         info->size = 0x00200000;
 320                         break;          /* => 2 MB              */
 321
 322                 default:
 323                         info->flash_id = FLASH_UNKNOWN;
 324                         return (0);     /* => no or unknown flash */
 325         }
 326
 327         /* set up sector start address table */
 328         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 329                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 330                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 331                 for (i = 0; i < info->sector_count; i++)
 332                         info->start[i] = base + (i * 0x00010000);
 333         } else {
 334                 if (info->flash_id & FLASH_BTYPE) {
 335                         /* set sector offsets for bottom boot block type        */
 336                         info->start[0] = base + 0x00000000;
 337                         info->start[1] = base + 0x00004000;
 338                         info->start[2] = base + 0x00006000;
 339                         info->start[3] = base + 0x00008000;
 340                         for (i = 4; i < info->sector_count; i++) {
 341                                 info->start[i] =
 342                                         base + (i * 0x00010000) - 0x00030000;
 343                         }
 344                 } else {
 345                         /* set sector offsets for top boot block type           */
 346                         i = info->sector_count - 1;
 347                         info->start[i--] = base + info->size - 0x00004000;
 348                         info->start[i--] = base + info->size - 0x00006000;
 349                         info->start[i--] = base + info->size - 0x00008000;
 350                         for (; i >= 0; i--) {
 351                                 info->start[i] = base + i * 0x00010000;
 352                         }
 353                 }
 354         }
 355
 356         /* check for protected sectors */
 357         for (i = 0; i < info->sector_count; i++) {
 358                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 359                 /* D0 = 1 if protected */
 360                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 361
 362                 /* For AMD29033C flash we need to resend the command of *
 363                  * reading flash protection for upper 8 Mb of flash     */
 364                 if (i == 32) {
 365                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 366                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 367                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 368                 }
 369
 370                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 371                         info->protect[i] = 0;
 372                 else
 373                         info->protect[i] = addr2[2] & 1;
 374         }
 375
 376         /* issue bank reset to return to read mode */
 377         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 378
 379         return (info->size);
 380 }
 381
 382 static int wait_for_DQ7_1(flash_info_t * info, int sect)
 383 {
 384         ulong start, now, last;
 385         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 386                 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 387
 388         start = get_timer(0);
 389         last = start;
 390         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 391                         (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 392                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 393                         printf("Timeout\n");
 394                         return -1;
 395                 }
 396                 /* show that we're waiting */
 397                 if ((now - last) > 1000) {      /* every second */
 398                         putc('.');
 399                         last = now;
 400                 }
 401         }
 402         return 0;
 403 }
 404
 405 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 406 int flash_erase(flash_info_t * info, int s_first, int s_last)
 407 {
 408         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 409                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 410                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 411                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 412                 return flash_erase_2(info, s_first, s_last);
 413         } else {
 414                 return flash_erase_1(info, s_first, s_last);
 415         }
 416 }
 417
 418 static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
 419 #else
 420 int flash_erase(flash_info_t * info, int s_first, int s_last)
 421 #endif
 422 {
 423         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 424         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 425         int flag, prot, sect;
 426         int i;
 427
 428         if ((s_first < 0) || (s_first > s_last)) {
 429                 if (info->flash_id == FLASH_UNKNOWN)
 430                         printf("- missing\n");
 431                 else
 432                         printf("- no sectors to erase\n");
 433                 return 1;
 434         }
 435
 436         if (info->flash_id == FLASH_UNKNOWN) {
 437                 printf("Can't erase unknown flash type - aborted\n");
 438                 return 1;
 439         }
 440
 441         prot = 0;
 442         for (sect = s_first; sect <= s_last; ++sect) {
 443                 if (info->protect[sect])
 444                         prot++;
 445         }
 446
 447         if (prot)
 448                 printf("- Warning: %d protected sectors will not be erased!", prot);
 449
 450         printf("\n");
 451
 452         /* Disable interrupts which might cause a timeout here */
 453         flag = disable_interrupts();
 454
 455         /* Start erase on unprotected sectors */
 456         for (sect = s_first; sect <= s_last; sect++) {
 457                 if (info->protect[sect] == 0) { /* not protected */
 458                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 459
 460                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 461                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 462                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 463                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 464                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 465                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 466                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 467                                 for (i = 0; i < 50; i++)
 468                                         udelay(1000);   /* wait 1 ms */
 469                         } else {
 470                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 471                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 472                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 473                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 474                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 475                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 476                         }
 477                         /*
 478                          * Wait for each sector to complete, it's more
 479                          * reliable.  According to AMD Spec, you must
 480                          * issue all erase commands within a specified
 481                          * timeout.  This has been seen to fail, especially
 482                          * if printf()s are included (for debug)!!
 483                          */
 484                         wait_for_DQ7_1(info, sect);
 485                 }
 486         }
 487
 488         /* re-enable interrupts if necessary */
 489         if (flag)
 490                 enable_interrupts();
 491
 492         /* wait at least 80us - let's wait 1 ms */
 493         udelay(1000);
 494
 495         /* reset to read mode */
 496         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 497         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 498
 499         printf(" done\n");
 500         return 0;
 501 }
 502
 503 /*-----------------------------------------------------------------------
 504  * Copy memory to flash, returns:
 505  * 0 - OK
 506  * 1 - write timeout
 507  * 2 - Flash not erased
 508  */
 509 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 510 {
 511         ulong cp, wp, data;
 512         int i, l, rc;
 513
 514         wp = (addr & ~3);       /* get lower word aligned address */
 515
 516         /*
 517          * handle unaligned start bytes
 518          */
 519         if ((l = addr - wp) != 0) {
 520                 data = 0;
 521                 for (i = 0, cp = wp; i < l; ++i, ++cp)
 522                         data = (data << 8) | (*(uchar *) cp);
 523
 524                 for (; i < 4 && cnt > 0; ++i) {
 525                         data = (data << 8) | *src++;
 526                         --cnt;
 527                         ++cp;
 528                 }
 529
 530                 for (; cnt == 0 && i < 4; ++i, ++cp)
 531                         data = (data << 8) | (*(uchar *) cp);
 532
 533                 if ((rc = write_word(info, wp, data)) != 0)
 534                         return (rc);
 535
 536                 wp += 4;
 537         }
 538
 539         /*
 540          * handle word aligned part
 541          */
 542         while (cnt >= 4) {
 543                 data = 0;
 544                 for (i = 0; i < 4; ++i)
 545                         data = (data << 8) | *src++;
 546
 547                 if ((rc = write_word(info, wp, data)) != 0)
 548                         return (rc);
 549
 550                 wp += 4;
 551                 cnt -= 4;
 552         }
 553
 554         if (cnt == 0)
 555                 return (0);
 556
 557         /*
 558          * handle unaligned tail bytes
 559          */
 560         data = 0;
 561         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 562                 data = (data << 8) | *src++;
 563                 --cnt;
 564         }
 565         for (; i < 4; ++i, ++cp)
 566                 data = (data << 8) | (*(uchar *) cp);
 567
 568         return (write_word(info, wp, data));
 569 }
 570
 571 /*-----------------------------------------------------------------------
 572  * Copy memory to flash, returns:
 573  * 0 - OK
 574  * 1 - write timeout
 575  * 2 - Flash not erased
 576  */
 577 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 578 static int write_word(flash_info_t * info, ulong dest, ulong data)
 579 {
 580         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 581                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 582                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 583                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 584                 return write_word_2(info, dest, data);
 585         } else {
 586                 return write_word_1(info, dest, data);
 587         }
 588 }
 589
 590 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 591 #else
 592 static int write_word(flash_info_t * info, ulong dest, ulong data)
 593 #endif
 594 {
 595         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 596         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 597         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 598         ulong start;
 599         int i, flag;
 600
 601         /* Check if Flash is (sufficiently) erased */
 602         if ((*((vu_long *)dest) & data) != data)
 603                 return (2);
 604
 605         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 606                 /* Disable interrupts which might cause a timeout here */
 607                 flag = disable_interrupts();
 608
 609                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 610                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 611                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 612
 613                 dest2[i] = data2[i];
 614
 615                 /* re-enable interrupts if necessary */
 616                 if (flag)
 617                         enable_interrupts();
 618
 619                 /* data polling for D7 */
 620                 start = get_timer(0);
 621                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 622                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 623
 624                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 625                                 return (1);
 626                 }
 627         }
 628
 629         return (0);
 630 }
 631
 632 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 633
 634 #undef  CONFIG_SYS_FLASH_WORD_SIZE
 635 #define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 636
 637 /*
 638  * The following code cannot be run from FLASH!
 639  */
 640 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 641 {
 642         short i;
 643         int n;
 644         CONFIG_SYS_FLASH_WORD_SIZE value;
 645         ulong base = (ulong) addr;
 646         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 647
 648         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 649
 650         /* issue bank reset to return to read mode */
 651         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 652         /* Write auto select command: read Manufacturer ID */
 653         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 654         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 655         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 656         udelay(1000);
 657
 658         value = addr2[0];
 659         DEBUGF("FLASH MANUFACT: %x\n", value);
 660
 661         switch (value) {
 662                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 663                         info->flash_id = FLASH_MAN_AMD;
 664                         break;
 665                 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 666                         info->flash_id = FLASH_MAN_FUJ;
 667                         break;
 668                 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 669                         info->flash_id = FLASH_MAN_SST;
 670                         break;
 671                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 672                         info->flash_id = FLASH_MAN_STM;
 673                         break;
 674                 case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 675                         info->flash_id = FLASH_MAN_MX;
 676                         break;
 677                 default:
 678                         info->flash_id = FLASH_UNKNOWN;
 679                         info->sector_count = 0;
 680                         info->size = 0;
 681                         return (0);     /* no or unknown flash  */
 682         }
 683
 684         value = addr2[1];       /* device ID            */
 685         DEBUGF("\nFLASH DEVICEID: %x\n", value);
 686
 687         switch (value) {
 688                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 689                         info->flash_id += FLASH_AM320T;
 690                         info->sector_count = 71;
 691                         info->size = 0x00400000;
 692                         break;  /* => 4 MB      */
 693                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 694                         info->flash_id += FLASH_AM320B;
 695                         info->sector_count = 71;
 696                         info->size = 0x00400000;
 697                         break;  /* => 4 MB      */
 698                 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 699                         info->flash_id += FLASH_STMW320DT;
 700                         info->sector_count = 67;
 701                         info->size = 0x00400000;
 702                         break;  /* => 4 MB      */
 703                 case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 704                         info->flash_id += FLASH_MXLV320T;
 705                         info->sector_count = 71;
 706                         info->size = 0x00400000;
 707                         break;  /* => 4 MB      */
 708                 default:
 709                         info->flash_id = FLASH_UNKNOWN;
 710                         return (0);     /* => no or unknown flash */
 711         }
 712
 713         /* set up sector start address table */
 714         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 715                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 716                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 717                 for (i = 0; i < info->sector_count; i++)
 718                         info->start[i] = base + (i * 0x00010000);
 719         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 720                 /* set sector offsets for top boot block type           */
 721                 base += info->size;
 722                 i = info->sector_count;
 723                 /*  1 x 16k boot sector */
 724                 base -= 16 << 10;
 725                 --i;
 726                 info->start[i] = base;
 727                 /*  2 x 8k  boot sectors */
 728                 for (n = 0; n < 2; ++n) {
 729                         base -= 8 << 10;
 730                         --i;
 731                         info->start[i] = base;
 732                 }
 733                 /*  1 x 32k boot sector */
 734                 base -= 32 << 10;
 735                 --i;
 736                 info->start[i] = base;
 737
 738                 while (i > 0) {                 /* 64k regular sectors  */
 739                         base -= 64 << 10;
 740                         --i;
 741                         info->start[i] = base;
 742                 }
 743         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 744                 i = info->sector_count - 1;
 745                 info->start[i--] = base + info->size - 0x00002000;
 746                 info->start[i--] = base + info->size - 0x00004000;
 747                 info->start[i--] = base + info->size - 0x00006000;
 748                 info->start[i--] = base + info->size - 0x00008000;
 749                 info->start[i--] = base + info->size - 0x0000a000;
 750                 info->start[i--] = base + info->size - 0x0000c000;
 751                 info->start[i--] = base + info->size - 0x0000e000;
 752                 info->start[i--] = base + info->size - 0x00010000;
 753
 754                 for (; i >= 0; i--)
 755                         info->start[i] = base + i * 0x00010000;
 756         } else {
 757                 if (info->flash_id & FLASH_BTYPE) {
 758                         /* set sector offsets for bottom boot block type        */
 759                         info->start[0] = base + 0x00000000;
 760                         info->start[1] = base + 0x00004000;
 761                         info->start[2] = base + 0x00006000;
 762                         info->start[3] = base + 0x00008000;
 763
 764                         for (i = 4; i < info->sector_count; i++)
 765                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
 766                 } else {
 767                         /* set sector offsets for top boot block type           */
 768                         i = info->sector_count - 1;
 769                         info->start[i--] = base + info->size - 0x00004000;
 770                         info->start[i--] = base + info->size - 0x00006000;
 771                         info->start[i--] = base + info->size - 0x00008000;
 772
 773                         for (; i >= 0; i--)
 774                                 info->start[i] = base + i * 0x00010000;
 775                 }
 776         }
 777
 778         /* check for protected sectors */
 779         for (i = 0; i < info->sector_count; i++) {
 780                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 781                 /* D0 = 1 if protected */
 782                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 783
 784                 /* For AMD29033C flash we need to resend the command of *
 785                  * reading flash protection for upper 8 Mb of flash     */
 786                 if (i == 32) {
 787                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 788                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 789                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 790                 }
 791
 792                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 793                         info->protect[i] = 0;
 794                 else
 795                         info->protect[i] = addr2[2] & 1;
 796         }
 797
 798         /* issue bank reset to return to read mode */
 799         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 800
 801         return (info->size);
 802 }
 803
 804 static int wait_for_DQ7_2(flash_info_t * info, int sect)
 805 {
 806         ulong start, now, last;
 807         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 808                 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 809
 810         start = get_timer(0);
 811         last = start;
 812         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 813                         (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 814                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 815                         printf("Timeout\n");
 816                         return -1;
 817                 }
 818                 /* show that we're waiting */
 819                 if ((now - last) > 1000) {      /* every second */
 820                         putc('.');
 821                         last = now;
 822                 }
 823         }
 824         return 0;
 825 }
 826
 827 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 828 {
 829         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 830         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 831         int flag, prot, sect;
 832         int i;
 833
 834         if ((s_first < 0) || (s_first > s_last)) {
 835                 if (info->flash_id == FLASH_UNKNOWN)
 836                         printf("- missing\n");
 837                 else
 838                         printf("- no sectors to erase\n");
 839                 return 1;
 840         }
 841
 842         if (info->flash_id == FLASH_UNKNOWN) {
 843                 printf("Can't erase unknown flash type - aborted\n");
 844                 return 1;
 845         }
 846
 847         prot = 0;
 848         for (sect = s_first; sect <= s_last; ++sect) {
 849                 if (info->protect[sect])
 850                         prot++;
 851         }
 852
 853         if (prot)
 854                 printf("- Warning: %d protected sectors will not be erased!",   prot);
 855
 856         printf("\n");
 857
 858         /* Disable interrupts which might cause a timeout here */
 859         flag = disable_interrupts();
 860
 861         /* Start erase on unprotected sectors */
 862         for (sect = s_first; sect <= s_last; sect++) {
 863                 if (info->protect[sect] == 0) { /* not protected */
 864                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 865
 866                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 867                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 868                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 869                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 870                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 871                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 872                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 873                                 for (i = 0; i < 50; i++)
 874                                         udelay(1000);   /* wait 1 ms */
 875                         } else {
 876                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 877                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 878                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 879                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 880                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 881                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 882                         }
 883                         /*
 884                          * Wait for each sector to complete, it's more
 885                          * reliable.  According to AMD Spec, you must
 886                          * issue all erase commands within a specified
 887                          * timeout.  This has been seen to fail, especially
 888                          * if printf()s are included (for debug)!!
 889                          */
 890                         wait_for_DQ7_2(info, sect);
 891                 }
 892         }
 893
 894         /* re-enable interrupts if necessary */
 895         if (flag)
 896                 enable_interrupts();
 897
 898         /* wait at least 80us - let's wait 1 ms */
 899         udelay(1000);
 900
 901         /* reset to read mode */
 902         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 903         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 904
 905         printf(" done\n");
 906         return 0;
 907 }
 908
 909 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 910 {
 911         ulong *data_ptr = &data;
 912         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
 913         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
 914         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
 915         ulong start;
 916         int i;
 917
 918         /* Check if Flash is (sufficiently) erased */
 919         if ((*((vu_long *)dest) & data) != data)
 920                 return (2);
 921
 922         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 923                 int flag;
 924
 925                 /* Disable interrupts which might cause a timeout here */
 926                 flag = disable_interrupts();
 927
 928                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 929                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 930                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 931
 932                 dest2[i] = data2[i];
 933
 934                 /* re-enable interrupts if necessary */
 935                 if (flag)
 936                         enable_interrupts();
 937
 938                 /* data polling for D7 */
 939                 start = get_timer(0);
 940                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 941                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 942
 943                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 944                                 return (1);
 945                 }
 946         }
 947
 948         return (0);
 949 }
 950 #endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 951
 952 /*-----------------------------------------------------------------------
 953  * Functions
 954  */
 955 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 956 static int write_word(flash_info_t * info, ulong dest, ulong data);
 957
 958 /*-----------------------------------------------------------------------
 959  */
 960
 961 unsigned long flash_init(void)
 962 {
 963         unsigned long total_b = 0;
 964         unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 965         unsigned short index = 0;
 966         int i;
 967         unsigned long val;
 968         unsigned long ebc_boot_size;
 969         unsigned long boot_selection;
 970
 971         mfsdr(sdr_pstrp0, val);
 972         index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 973
 974         if ((index == 0xc) || (index == 8)) {
 975                 /*
 976                  * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 977                  * Read Serial Device Strap Register1 in PPC440SPe
 978                  */
 979                 mfsdr(SDR0_SDSTP1, val);
 980                 boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 981                 ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 982
 983                 switch(boot_selection) {
 984                         case SDR0_SDSTP1_BOOT_SEL_EBC:
 985                                 switch(ebc_boot_size) {
 986                                         case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 987                                                 index = 3;
 988                                                 break;
 989                                         case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 990                                                 index = 0;
 991                                                 break;
 992                                 }
 993                                 break;
 994
 995                         case SDR0_SDSTP1_BOOT_SEL_PCI:
 996                                 index = 1;
 997                                 break;
 998
 999                 }
1000         } /*else if (index == 0) {*/
1001 /*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
1002 /*                      index = 8;*/ /* sram below op code flash -> new index 8*/
1003 /*      }*/
1004
1005         DEBUGF("\n");
1006         DEBUGF("FLASH: Index: %d\n", index);
1007
1008         /* Init: no FLASHes known */
1009         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1010                 flash_info[i].flash_id = FLASH_UNKNOWN;
1011                 flash_info[i].sector_count = -1;
1012                 flash_info[i].size = 0;
1013
1014                 /* check whether the address is 0 */
1015                 if (flash_addr_table[index][i] == 0)
1016                         continue;
1017
1018                 /* call flash_get_size() to initialize sector address */
1019                 size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1020                                 &flash_info[i]);
1021
1022                 flash_info[i].size = size_b[i];
1023
1024                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1025                         printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1026                                         i, size_b[i], size_b[i] << 20);
1027                         flash_info[i].sector_count = -1;
1028                         flash_info[i].size = 0;
1029                 }
1030
1031                 /* Monitor protection ON by default */
1032                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
1033                                     CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
1034                                     &flash_info[i]);
1035 #if defined(CONFIG_ENV_IS_IN_FLASH)
1036                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
1037                                     CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1038                                     &flash_info[i]);
1039 #if defined(CONFIG_ENV_ADDR_REDUND)
1040                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
1041                                     CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
1042                                     &flash_info[i]);
1043 #endif
1044 #endif
1045                 total_b += flash_info[i].size;
1046         }
1047
1048         return total_b;
1049 }