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 <ppc4xx.h>
  36 #include <asm/processor.h>
  37 #include <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, l_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         l_sect = -1;
 453
 454         /* Disable interrupts which might cause a timeout here */
 455         flag = disable_interrupts();
 456
 457         /* Start erase on unprotected sectors */
 458         for (sect = s_first; sect <= s_last; sect++) {
 459                 if (info->protect[sect] == 0) { /* not protected */
 460                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 461
 462                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 463                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 464                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 465                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 466                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 467                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 468                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 469                                 for (i = 0; i < 50; i++)
 470                                         udelay(1000);   /* wait 1 ms */
 471                         } else {
 472                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 473                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 474                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 475                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 476                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 477                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 478                         }
 479                         l_sect = sect;
 480                         /*
 481                          * Wait for each sector to complete, it's more
 482                          * reliable.  According to AMD Spec, you must
 483                          * issue all erase commands within a specified
 484                          * timeout.  This has been seen to fail, especially
 485                          * if printf()s are included (for debug)!!
 486                          */
 487                         wait_for_DQ7_1(info, sect);
 488                 }
 489         }
 490
 491         /* re-enable interrupts if necessary */
 492         if (flag)
 493                 enable_interrupts();
 494
 495         /* wait at least 80us - let's wait 1 ms */
 496         udelay(1000);
 497
 498         /* reset to read mode */
 499         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 500         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 501
 502         printf(" done\n");
 503         return 0;
 504 }
 505
 506 /*-----------------------------------------------------------------------
 507  * Copy memory to flash, returns:
 508  * 0 - OK
 509  * 1 - write timeout
 510  * 2 - Flash not erased
 511  */
 512 int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 513 {
 514         ulong cp, wp, data;
 515         int i, l, rc;
 516
 517         wp = (addr & ~3);       /* get lower word aligned address */
 518
 519         /*
 520          * handle unaligned start bytes
 521          */
 522         if ((l = addr - wp) != 0) {
 523                 data = 0;
 524                 for (i = 0, cp = wp; i < l; ++i, ++cp)
 525                         data = (data << 8) | (*(uchar *) cp);
 526
 527                 for (; i < 4 && cnt > 0; ++i) {
 528                         data = (data << 8) | *src++;
 529                         --cnt;
 530                         ++cp;
 531                 }
 532
 533                 for (; cnt == 0 && i < 4; ++i, ++cp)
 534                         data = (data << 8) | (*(uchar *) cp);
 535
 536                 if ((rc = write_word(info, wp, data)) != 0)
 537                         return (rc);
 538
 539                 wp += 4;
 540         }
 541
 542         /*
 543          * handle word aligned part
 544          */
 545         while (cnt >= 4) {
 546                 data = 0;
 547                 for (i = 0; i < 4; ++i)
 548                         data = (data << 8) | *src++;
 549
 550                 if ((rc = write_word(info, wp, data)) != 0)
 551                         return (rc);
 552
 553                 wp += 4;
 554                 cnt -= 4;
 555         }
 556
 557         if (cnt == 0)
 558                 return (0);
 559
 560         /*
 561          * handle unaligned tail bytes
 562          */
 563         data = 0;
 564         for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
 565                 data = (data << 8) | *src++;
 566                 --cnt;
 567         }
 568         for (; i < 4; ++i, ++cp)
 569                 data = (data << 8) | (*(uchar *) cp);
 570
 571         return (write_word(info, wp, data));
 572 }
 573
 574 /*-----------------------------------------------------------------------
 575  * Copy memory to flash, returns:
 576  * 0 - OK
 577  * 1 - write timeout
 578  * 2 - Flash not erased
 579  */
 580 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 581 static int write_word(flash_info_t * info, ulong dest, ulong data)
 582 {
 583         if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
 584                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
 585                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) ||
 586                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T)) {
 587                 return write_word_2(info, dest, data);
 588         } else {
 589                 return write_word_1(info, dest, data);
 590         }
 591 }
 592
 593 static int write_word_1(flash_info_t * info, ulong dest, ulong data)
 594 #else
 595 static int write_word(flash_info_t * info, ulong dest, ulong data)
 596 #endif
 597 {
 598         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 599         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 600         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 601         ulong start;
 602         int i, flag;
 603
 604         /* Check if Flash is (sufficiently) erased */
 605         if ((*((vu_long *)dest) & data) != data)
 606                 return (2);
 607
 608         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 609                 /* Disable interrupts which might cause a timeout here */
 610                 flag = disable_interrupts();
 611
 612                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 613                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 614                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 615
 616                 dest2[i] = data2[i];
 617
 618                 /* re-enable interrupts if necessary */
 619                 if (flag)
 620                         enable_interrupts();
 621
 622                 /* data polling for D7 */
 623                 start = get_timer(0);
 624                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 625                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 626
 627                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 628                                 return (1);
 629                 }
 630         }
 631
 632         return (0);
 633 }
 634
 635 #ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
 636
 637 #undef  CONFIG_SYS_FLASH_WORD_SIZE
 638 #define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
 639
 640 /*
 641  * The following code cannot be run from FLASH!
 642  */
 643 static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
 644 {
 645         short i;
 646         int n;
 647         CONFIG_SYS_FLASH_WORD_SIZE value;
 648         ulong base = (ulong) addr;
 649         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
 650
 651         DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
 652
 653         /* issue bank reset to return to read mode */
 654         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 655         /* Write auto select command: read Manufacturer ID */
 656         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 657         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 658         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
 659         udelay(1000);
 660
 661         value = addr2[0];
 662         DEBUGF("FLASH MANUFACT: %x\n", value);
 663
 664         switch (value) {
 665                 case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
 666                         info->flash_id = FLASH_MAN_AMD;
 667                         break;
 668                 case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
 669                         info->flash_id = FLASH_MAN_FUJ;
 670                         break;
 671                 case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
 672                         info->flash_id = FLASH_MAN_SST;
 673                         break;
 674                 case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
 675                         info->flash_id = FLASH_MAN_STM;
 676                         break;
 677                 case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
 678                         info->flash_id = FLASH_MAN_MX;
 679                         break;
 680                 default:
 681                         info->flash_id = FLASH_UNKNOWN;
 682                         info->sector_count = 0;
 683                         info->size = 0;
 684                         return (0);     /* no or unknown flash  */
 685         }
 686
 687         value = addr2[1];       /* device ID            */
 688         DEBUGF("\nFLASH DEVICEID: %x\n", value);
 689
 690         switch (value) {
 691                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
 692                         info->flash_id += FLASH_AM320T;
 693                         info->sector_count = 71;
 694                         info->size = 0x00400000;
 695                         break;  /* => 4 MB      */
 696                 case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
 697                         info->flash_id += FLASH_AM320B;
 698                         info->sector_count = 71;
 699                         info->size = 0x00400000;
 700                         break;  /* => 4 MB      */
 701                 case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
 702                         info->flash_id += FLASH_STMW320DT;
 703                         info->sector_count = 67;
 704                         info->size = 0x00400000;
 705                         break;  /* => 4 MB      */
 706                 case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
 707                         info->flash_id += FLASH_MXLV320T;
 708                         info->sector_count = 71;
 709                         info->size = 0x00400000;
 710                         break;  /* => 4 MB      */
 711                 default:
 712                         info->flash_id = FLASH_UNKNOWN;
 713                         return (0);     /* => no or unknown flash */
 714         }
 715
 716         /* set up sector start address table */
 717         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 718                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
 719                         ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
 720                 for (i = 0; i < info->sector_count; i++)
 721                         info->start[i] = base + (i * 0x00010000);
 722         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
 723                 /* set sector offsets for top boot block type           */
 724                 base += info->size;
 725                 i = info->sector_count;
 726                 /*  1 x 16k boot sector */
 727                 base -= 16 << 10;
 728                 --i;
 729                 info->start[i] = base;
 730                 /*  2 x 8k  boot sectors */
 731                 for (n = 0; n < 2; ++n) {
 732                         base -= 8 << 10;
 733                         --i;
 734                         info->start[i] = base;
 735                 }
 736                 /*  1 x 32k boot sector */
 737                 base -= 32 << 10;
 738                 --i;
 739                 info->start[i] = base;
 740
 741                 while (i > 0) {                 /* 64k regular sectors  */
 742                         base -= 64 << 10;
 743                         --i;
 744                         info->start[i] = base;
 745                 }
 746         } else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
 747                 i = info->sector_count - 1;
 748                 info->start[i--] = base + info->size - 0x00002000;
 749                 info->start[i--] = base + info->size - 0x00004000;
 750                 info->start[i--] = base + info->size - 0x00006000;
 751                 info->start[i--] = base + info->size - 0x00008000;
 752                 info->start[i--] = base + info->size - 0x0000a000;
 753                 info->start[i--] = base + info->size - 0x0000c000;
 754                 info->start[i--] = base + info->size - 0x0000e000;
 755                 info->start[i--] = base + info->size - 0x00010000;
 756
 757                 for (; i >= 0; i--)
 758                         info->start[i] = base + i * 0x00010000;
 759         } else {
 760                 if (info->flash_id & FLASH_BTYPE) {
 761                         /* set sector offsets for bottom boot block type        */
 762                         info->start[0] = base + 0x00000000;
 763                         info->start[1] = base + 0x00004000;
 764                         info->start[2] = base + 0x00006000;
 765                         info->start[3] = base + 0x00008000;
 766
 767                         for (i = 4; i < info->sector_count; i++)
 768                                 info->start[i] = base + (i * 0x00010000) - 0x00030000;
 769                 } else {
 770                         /* set sector offsets for top boot block type           */
 771                         i = info->sector_count - 1;
 772                         info->start[i--] = base + info->size - 0x00004000;
 773                         info->start[i--] = base + info->size - 0x00006000;
 774                         info->start[i--] = base + info->size - 0x00008000;
 775
 776                         for (; i >= 0; i--)
 777                                 info->start[i] = base + i * 0x00010000;
 778                 }
 779         }
 780
 781         /* check for protected sectors */
 782         for (i = 0; i < info->sector_count; i++) {
 783                 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
 784                 /* D0 = 1 if protected */
 785                 addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
 786
 787                 /* For AMD29033C flash we need to resend the command of *
 788                  * reading flash protection for upper 8 Mb of flash     */
 789                 if (i == 32) {
 790                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
 791                         addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
 792                         addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
 793                 }
 794
 795                 if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
 796                         info->protect[i] = 0;
 797                 else
 798                         info->protect[i] = addr2[2] & 1;
 799         }
 800
 801         /* issue bank reset to return to read mode */
 802         addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
 803
 804         return (info->size);
 805 }
 806
 807 static int wait_for_DQ7_2(flash_info_t * info, int sect)
 808 {
 809         ulong start, now, last;
 810         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
 811                 (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 812
 813         start = get_timer(0);
 814         last = start;
 815         while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 816                         (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
 817                 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
 818                         printf("Timeout\n");
 819                         return -1;
 820                 }
 821                 /* show that we're waiting */
 822                 if ((now - last) > 1000) {      /* every second */
 823                         putc('.');
 824                         last = now;
 825                 }
 826         }
 827         return 0;
 828 }
 829
 830 static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
 831 {
 832         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 833         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
 834         int flag, prot, sect, l_sect;
 835         int i;
 836
 837         if ((s_first < 0) || (s_first > s_last)) {
 838                 if (info->flash_id == FLASH_UNKNOWN)
 839                         printf("- missing\n");
 840                 else
 841                         printf("- no sectors to erase\n");
 842                 return 1;
 843         }
 844
 845         if (info->flash_id == FLASH_UNKNOWN) {
 846                 printf("Can't erase unknown flash type - aborted\n");
 847                 return 1;
 848         }
 849
 850         prot = 0;
 851         for (sect = s_first; sect <= s_last; ++sect) {
 852                 if (info->protect[sect])
 853                         prot++;
 854         }
 855
 856         if (prot)
 857                 printf("- Warning: %d protected sectors will not be erased!",   prot);
 858
 859         printf("\n");
 860
 861         l_sect = -1;
 862
 863         /* Disable interrupts which might cause a timeout here */
 864         flag = disable_interrupts();
 865
 866         /* Start erase on unprotected sectors */
 867         for (sect = s_first; sect <= s_last; sect++) {
 868                 if (info->protect[sect] == 0) { /* not protected */
 869                         addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
 870
 871                         if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
 872                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 873                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 874                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 875                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 876                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 877                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;     /* block erase */
 878                                 for (i = 0; i < 50; i++)
 879                                         udelay(1000);   /* wait 1 ms */
 880                         } else {
 881                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 882                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 883                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
 884                                 addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 885                                 addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 886                                 addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;     /* sector erase */
 887                         }
 888                         l_sect = sect;
 889                         /*
 890                          * Wait for each sector to complete, it's more
 891                          * reliable.  According to AMD Spec, you must
 892                          * issue all erase commands within a specified
 893                          * timeout.  This has been seen to fail, especially
 894                          * if printf()s are included (for debug)!!
 895                          */
 896                         wait_for_DQ7_2(info, sect);
 897                 }
 898         }
 899
 900         /* re-enable interrupts if necessary */
 901         if (flag)
 902                 enable_interrupts();
 903
 904         /* wait at least 80us - let's wait 1 ms */
 905         udelay(1000);
 906
 907         /* reset to read mode */
 908         addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
 909         addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;      /* reset bank */
 910
 911         printf(" done\n");
 912         return 0;
 913 }
 914
 915 static int write_word_2(flash_info_t * info, ulong dest, ulong data)
 916 {
 917         volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
 918         volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
 919         volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
 920         ulong start;
 921         int i;
 922
 923         /* Check if Flash is (sufficiently) erased */
 924         if ((*((vu_long *)dest) & data) != data)
 925                 return (2);
 926
 927         for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
 928                 int flag;
 929
 930                 /* Disable interrupts which might cause a timeout here */
 931                 flag = disable_interrupts();
 932
 933                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
 934                 addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
 935                 addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00A000A0;
 936
 937                 dest2[i] = data2[i];
 938
 939                 /* re-enable interrupts if necessary */
 940                 if (flag)
 941                         enable_interrupts();
 942
 943                 /* data polling for D7 */
 944                 start = get_timer(0);
 945                 while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
 946                                 (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
 947
 948                         if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
 949                                 return (1);
 950                 }
 951         }
 952
 953         return (0);
 954 }
 955 #endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
 956
 957 /*-----------------------------------------------------------------------
 958  * Functions
 959  */
 960 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
 961 static int write_word(flash_info_t * info, ulong dest, ulong data);
 962
 963 /*-----------------------------------------------------------------------
 964  */
 965
 966 unsigned long flash_init(void)
 967 {
 968         unsigned long total_b = 0;
 969         unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
 970         unsigned short index = 0;
 971         int i;
 972         unsigned long val;
 973         unsigned long ebc_boot_size;
 974         unsigned long boot_selection;
 975
 976         mfsdr(sdr_pstrp0, val);
 977         index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 28;
 978
 979         if ((index == 0xc) || (index == 8)) {
 980                 /*
 981                  * Boot Settings in IIC EEprom address 0xA8 or 0xA0
 982                  * Read Serial Device Strap Register1 in PPC440SPe
 983                  */
 984                 mfsdr(sdr_sdstp1, val);
 985                 boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
 986                 ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
 987
 988                 switch(boot_selection) {
 989                         case SDR0_SDSTP1_BOOT_SEL_EBC:
 990                                 switch(ebc_boot_size) {
 991                                         case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
 992                                                 index = 3;
 993                                                 break;
 994                                         case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
 995                                                 index = 0;
 996                                                 break;
 997                                 }
 998                                 break;
 999
1000                         case SDR0_SDSTP1_BOOT_SEL_PCI:
1001                                 index = 1;
1002                                 break;
1003
1004                 }
1005         } /*else if (index == 0) {*/
1006 /*              if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE)*/
1007 /*                      index = 8;*/ /* sram below op code flash -> new index 8*/
1008 /*      }*/
1009
1010         DEBUGF("\n");
1011         DEBUGF("FLASH: Index: %d\n", index);
1012
1013         /* Init: no FLASHes known */
1014         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1015                 flash_info[i].flash_id = FLASH_UNKNOWN;
1016                 flash_info[i].sector_count = -1;
1017                 flash_info[i].size = 0;
1018
1019                 /* check whether the address is 0 */
1020                 if (flash_addr_table[index][i] == 0)
1021                         continue;
1022
1023                 /* call flash_get_size() to initialize sector address */
1024                 size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
1025                                 &flash_info[i]);
1026
1027                 flash_info[i].size = size_b[i];
1028
1029                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1030                         printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
1031                                         i, size_b[i], size_b[i] << 20);
1032                         flash_info[i].sector_count = -1;
1033                         flash_info[i].size = 0;
1034                 }
1035
1036                 /* Monitor protection ON by default */
1037                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
1038                                     CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
1039                                     &flash_info[i]);
1040 #if defined(CONFIG_ENV_IS_IN_FLASH)
1041                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
1042                                     CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1043                                     &flash_info[i]);
1044 #if defined(CONFIG_ENV_ADDR_REDUND)
1045                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
1046                                     CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
1047                                     &flash_info[i]);
1048 #endif
1049 #endif
1050                 total_b += flash_info[i].size;
1051         }
1052
1053         return total_b;
1054 }