drivers/cfi_flash.c

   1 /*
   2  * (C) Copyright 2002-2004
   3  * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
   4  *
   5  * Copyright (C) 2003 Arabella Software Ltd.
   6  * Yuli Barcohen <yuli@arabellasw.com>
   7  * Modified to work with AMD flashes
   8  *
   9  * Copyright (C) 2004
  10  * Ed Okerson
  11  * Modified to work with little-endian systems.
  12  *
  13  * See file CREDITS for list of people who contributed to this
  14  * project.
  15  *
  16  * This program is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU General Public License as
  18  * published by the Free Software Foundation; either version 2 of
  19  * the License, or (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  29  * MA 02111-1307 USA
  30  *
  31  * History
  32  * 01/20/2004 - combined variants of original driver.
  33  * 01/22/2004 - Write performance enhancements for parallel chips (Tolunay)
  34  * 01/23/2004 - Support for x8/x16 chips (Rune Raknerud)
  35  * 01/27/2004 - Little endian support Ed Okerson
  36  *
  37  * Tested Architectures
  38  * Port Width  Chip Width    # of banks    Flash Chip  Board
  39  * 32          16            1             28F128J3    seranoa/eagle
  40  * 64          16            1             28F128J3    seranoa/falcon
  41  *
  42  */
  43
  44 /* The DEBUG define must be before common to enable debugging */
  45 /* #define DEBUG        */
  46
  47 #include <common.h>
  48 #include <asm/processor.h>
  49 #include <asm/byteorder.h>
  50 #include <linux/byteorder/swab.h>
  51 #ifdef  CFG_FLASH_CFI_DRIVER
  52
  53 /*
  54  * This file implements a Common Flash Interface (CFI) driver for U-Boot.
  55  * The width of the port and the width of the chips are determined at initialization.
  56  * These widths are used to calculate the address for access CFI data structures.
  57  * It has been tested on an Intel Strataflash implementation and AMD 29F016D.
  58  *
  59  * References
  60  * JEDEC Standard JESD68 - Common Flash Interface (CFI)
  61  * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
  62  * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
  63  * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
  64  *
  65  * TODO
  66  *
  67  * Use Primary Extended Query table (PRI) and Alternate Algorithm Query
  68  * Table (ALT) to determine if protection is available
  69  *
  70  * Add support for other command sets Use the PRI and ALT to determine command set
  71  * Verify erase and program timeouts.
  72  */
  73
  74 #ifndef CFG_FLASH_BANKS_LIST
  75 #define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE }
  76 #endif
  77
  78 #define FLASH_CMD_CFI                   0x98
  79 #define FLASH_CMD_READ_ID               0x90
  80 #define FLASH_CMD_RESET                 0xff
  81 #define FLASH_CMD_BLOCK_ERASE           0x20
  82 #define FLASH_CMD_ERASE_CONFIRM         0xD0
  83 #define FLASH_CMD_WRITE                 0x40
  84 #define FLASH_CMD_PROTECT               0x60
  85 #define FLASH_CMD_PROTECT_SET           0x01
  86 #define FLASH_CMD_PROTECT_CLEAR         0xD0
  87 #define FLASH_CMD_CLEAR_STATUS          0x50
  88 #define FLASH_CMD_WRITE_TO_BUFFER       0xE8
  89 #define FLASH_CMD_WRITE_BUFFER_CONFIRM  0xD0
  90
  91 #define FLASH_STATUS_DONE               0x80
  92 #define FLASH_STATUS_ESS                0x40
  93 #define FLASH_STATUS_ECLBS              0x20
  94 #define FLASH_STATUS_PSLBS              0x10
  95 #define FLASH_STATUS_VPENS              0x08
  96 #define FLASH_STATUS_PSS                0x04
  97 #define FLASH_STATUS_DPS                0x02
  98 #define FLASH_STATUS_R                  0x01
  99 #define FLASH_STATUS_PROTECT            0x01
 100
 101 #define AMD_CMD_RESET                   0xF0
 102 #define AMD_CMD_WRITE                   0xA0
 103 #define AMD_CMD_ERASE_START             0x80
 104 #define AMD_CMD_ERASE_SECTOR            0x30
 105 #define AMD_CMD_UNLOCK_START            0xAA
 106 #define AMD_CMD_UNLOCK_ACK              0x55
 107
 108 #define AMD_STATUS_TOGGLE               0x40
 109 #define AMD_STATUS_ERROR                0x20
 110 #define AMD_ADDR_ERASE_START            0x555
 111 #define AMD_ADDR_START                  0x555
 112 #define AMD_ADDR_ACK                    0x2AA
 113
 114 #define FLASH_OFFSET_CFI                0x55
 115 #define FLASH_OFFSET_CFI_RESP           0x10
 116 #define FLASH_OFFSET_PRIMARY_VENDOR     0x13
 117 #define FLASH_OFFSET_WTOUT              0x1F
 118 #define FLASH_OFFSET_WBTOUT             0x20
 119 #define FLASH_OFFSET_ETOUT              0x21
 120 #define FLASH_OFFSET_CETOUT             0x22
 121 #define FLASH_OFFSET_WMAX_TOUT          0x23
 122 #define FLASH_OFFSET_WBMAX_TOUT         0x24
 123 #define FLASH_OFFSET_EMAX_TOUT          0x25
 124 #define FLASH_OFFSET_CEMAX_TOUT         0x26
 125 #define FLASH_OFFSET_SIZE               0x27
 126 #define FLASH_OFFSET_INTERFACE          0x28
 127 #define FLASH_OFFSET_BUFFER_SIZE        0x2A
 128 #define FLASH_OFFSET_NUM_ERASE_REGIONS  0x2C
 129 #define FLASH_OFFSET_ERASE_REGIONS      0x2D
 130 #define FLASH_OFFSET_PROTECT            0x02
 131 #define FLASH_OFFSET_USER_PROTECTION    0x85
 132 #define FLASH_OFFSET_INTEL_PROTECTION   0x81
 133
 134
 135 #define FLASH_MAN_CFI                   0x01000000
 136
 137 #define CFI_CMDSET_NONE             0
 138 #define CFI_CMDSET_INTEL_EXTENDED   1
 139 #define CFI_CMDSET_AMD_STANDARD     2
 140 #define CFI_CMDSET_INTEL_STANDARD   3
 141 #define CFI_CMDSET_AMD_EXTENDED     4
 142 #define CFI_CMDSET_MITSU_STANDARD   256
 143 #define CFI_CMDSET_MITSU_EXTENDED   257
 144 #define CFI_CMDSET_SST              258
 145
 146
 147 typedef union {
 148         unsigned char c;
 149         unsigned short w;
 150         unsigned long l;
 151         unsigned long long ll;
 152 } cfiword_t;
 153
 154 typedef union {
 155         volatile unsigned char *cp;
 156         volatile unsigned short *wp;
 157         volatile unsigned long *lp;
 158         volatile unsigned long long *llp;
 159 } cfiptr_t;
 160
 161 #define NUM_ERASE_REGIONS 4
 162
 163 static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
 164
 165 flash_info_t flash_info[CFG_MAX_FLASH_BANKS];   /* info for FLASH chips   */
 166
 167 /*-----------------------------------------------------------------------
 168  * Functions
 169  */
 170
 171 typedef unsigned long flash_sect_t;
 172
 173 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c);
 174 static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf);
 175 static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 176 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect);
 177 static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 178 static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 179 static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 180 static int flash_detect_cfi (flash_info_t * info);
 181 static ulong flash_get_size (ulong base, int banknum);
 182 static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword);
 183 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 184                                     ulong tout, char *prompt);
 185 #ifdef CFG_FLASH_USE_BUFFER_WRITE
 186 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int len);
 187 #endif
 188
 189 /*-----------------------------------------------------------------------
 190  * create an address based on the offset and the port width
 191  */
 192 inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset)
 193 {
 194         return ((uchar *) (info->start[sect] + (offset * info->portwidth)));
 195 }
 196
 197 #ifdef DEBUG
 198 /*-----------------------------------------------------------------------
 199  * Debug support
 200  */
 201 void print_longlong (char *str, unsigned long long data)
 202 {
 203         int i;
 204         char *cp;
 205
 206         cp = (unsigned char *) &data;
 207         for (i = 0; i < 8; i++)
 208                 sprintf (&str[i * 2], "%2.2x", *cp++);
 209 }
 210 static void flash_printqry (flash_info_t * info, flash_sect_t sect)
 211 {
 212         cfiptr_t cptr;
 213         int x, y;
 214
 215         for (x = 0; x < 0x40; x += 16 / info->portwidth) {
 216                 cptr.cp =
 217                         flash_make_addr (info, sect,
 218                                          x + FLASH_OFFSET_CFI_RESP);
 219                 debug ("%p : ", cptr.cp);
 220                 for (y = 0; y < 16; y++) {
 221                         debug ("%2.2x ", cptr.cp[y]);
 222                 }
 223                 debug (" ");
 224                 for (y = 0; y < 16; y++) {
 225                         if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) {
 226                                 debug ("%c", cptr.cp[y]);
 227                         } else {
 228                                 debug (".");
 229                         }
 230                 }
 231                 debug ("\n");
 232         }
 233 }
 234 #endif
 235
 236
 237 /*-----------------------------------------------------------------------
 238  * read a character at a port width address
 239  */
 240 inline uchar flash_read_uchar (flash_info_t * info, uint offset)
 241 {
 242         uchar *cp;
 243
 244         cp = flash_make_addr (info, 0, offset);
 245 #if defined(__LITTLE_ENDIAN)
 246         return (cp[0]);
 247 #else
 248         return (cp[info->portwidth - 1]);
 249 #endif
 250 }
 251
 252 /*-----------------------------------------------------------------------
 253  * read a short word by swapping for ppc format.
 254  */
 255 ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset)
 256 {
 257         uchar *addr;
 258         ushort retval;
 259
 260 #ifdef DEBUG
 261         int x;
 262 #endif
 263         addr = flash_make_addr (info, sect, offset);
 264
 265 #ifdef DEBUG
 266         debug ("ushort addr is at %p info->portwidth = %d\n", addr,
 267                info->portwidth);
 268         for (x = 0; x < 2 * info->portwidth; x++) {
 269                 debug ("addr[%x] = 0x%x\n", x, addr[x]);
 270         }
 271 #endif
 272 #if defined(__LITTLE_ENDIAN)
 273         retval = ((addr[(info->portwidth)] << 8) | addr[0]);
 274 #else
 275         retval = ((addr[(2 * info->portwidth) - 1] << 8) |
 276                   addr[info->portwidth - 1]);
 277 #endif
 278
 279         debug ("retval = 0x%x\n", retval);
 280         return retval;
 281 }
 282
 283 /*-----------------------------------------------------------------------
 284  * read a long word by picking the least significant byte of each maiximum
 285  * port size word. Swap for ppc format.
 286  */
 287 ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
 288 {
 289         uchar *addr;
 290         ulong retval;
 291
 292 #ifdef DEBUG
 293         int x;
 294 #endif
 295         addr = flash_make_addr (info, sect, offset);
 296
 297 #ifdef DEBUG
 298         debug ("long addr is at %p info->portwidth = %d\n", addr,
 299                info->portwidth);
 300         for (x = 0; x < 4 * info->portwidth; x++) {
 301                 debug ("addr[%x] = 0x%x\n", x, addr[x]);
 302         }
 303 #endif
 304 #if defined(__LITTLE_ENDIAN)
 305         retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) |
 306                 (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8);
 307 #else
 308         retval = (addr[(2 * info->portwidth) - 1] << 24) |
 309                 (addr[(info->portwidth) - 1] << 16) |
 310                 (addr[(4 * info->portwidth) - 1] << 8) |
 311                 addr[(3 * info->portwidth) - 1];
 312 #endif
 313         return retval;
 314 }
 315
 316 /*-----------------------------------------------------------------------
 317  */
 318 unsigned long flash_init (void)
 319 {
 320         unsigned long size = 0;
 321         int i;
 322
 323         /* Init: no FLASHes known */
 324         for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
 325                 flash_info[i].flash_id = FLASH_UNKNOWN;
 326                 size += flash_info[i].size = flash_get_size (bank_base[i], i);
 327                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
 328                         printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
 329                                 i, flash_info[i].size, flash_info[i].size << 20);
 330                 }
 331         }
 332
 333         /* Monitor protection ON by default */
 334 #if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
 335         flash_protect (FLAG_PROTECT_SET,
 336                        CFG_MONITOR_BASE,
 337                        CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
 338                        &flash_info[0]);
 339 #endif
 340
 341         return (size);
 342 }
 343
 344 /*-----------------------------------------------------------------------
 345  */
 346 int flash_erase (flash_info_t * info, int s_first, int s_last)
 347 {
 348         int rcode = 0;
 349         int prot;
 350         flash_sect_t sect;
 351
 352         if (info->flash_id != FLASH_MAN_CFI) {
 353                 puts ("Can't erase unknown flash type - aborted\n");
 354                 return 1;
 355         }
 356         if ((s_first < 0) || (s_first > s_last)) {
 357                 puts ("- no sectors to erase\n");
 358                 return 1;
 359         }
 360
 361         prot = 0;
 362         for (sect = s_first; sect <= s_last; ++sect) {
 363                 if (info->protect[sect]) {
 364                         prot++;
 365                 }
 366         }
 367         if (prot) {
 368                 printf ("- Warning: %d protected sectors will not be erased!\n", prot);
 369         } else {
 370                 putc ('\n');
 371         }
 372
 373
 374         for (sect = s_first; sect <= s_last; sect++) {
 375                 if (info->protect[sect] == 0) { /* not protected */
 376                         switch (info->vendor) {
 377                         case CFI_CMDSET_INTEL_STANDARD:
 378                         case CFI_CMDSET_INTEL_EXTENDED:
 379                                 flash_write_cmd (info, sect, 0, FLASH_CMD_CLEAR_STATUS);
 380                                 flash_write_cmd (info, sect, 0, FLASH_CMD_BLOCK_ERASE);
 381                                 flash_write_cmd (info, sect, 0, FLASH_CMD_ERASE_CONFIRM);
 382                                 break;
 383                         case CFI_CMDSET_AMD_STANDARD:
 384                         case CFI_CMDSET_AMD_EXTENDED:
 385                                 flash_unlock_seq (info, sect);
 386                                 flash_write_cmd (info, sect, AMD_ADDR_ERASE_START,
 387                                                         AMD_CMD_ERASE_START);
 388                                 flash_unlock_seq (info, sect);
 389                                 flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR);
 390                                 break;
 391                         default:
 392                                 debug ("Unkown flash vendor %d\n",
 393                                        info->vendor);
 394                                 break;
 395                         }
 396
 397                         if (flash_full_status_check
 398                             (info, sect, info->erase_blk_tout, "erase")) {
 399                                 rcode = 1;
 400                         } else
 401                                 putc ('.');
 402                 }
 403         }
 404         puts (" done\n");
 405         return rcode;
 406 }
 407
 408 /*-----------------------------------------------------------------------
 409  */
 410 void flash_print_info (flash_info_t * info)
 411 {
 412         int i;
 413
 414         if (info->flash_id != FLASH_MAN_CFI) {
 415                 puts ("missing or unknown FLASH type\n");
 416                 return;
 417         }
 418
 419         printf ("CFI conformant FLASH (%d x %d)",
 420                 (info->portwidth << 3), (info->chipwidth << 3));
 421         printf ("  Size: %ld MB in %d Sectors\n",
 422                 info->size >> 20, info->sector_count);
 423         printf (" Erase timeout %ld ms, write timeout %ld ms, buffer write timeout %ld ms, buffer size %d\n",
 424                 info->erase_blk_tout,
 425                 info->write_tout,
 426                 info->buffer_write_tout,
 427                 info->buffer_size);
 428
 429         puts ("  Sector Start Addresses:");
 430         for (i = 0; i < info->sector_count; ++i) {
 431 #ifdef CFG_FLASH_EMPTY_INFO
 432                 int k;
 433                 int size;
 434                 int erased;
 435                 volatile unsigned long *flash;
 436
 437                 /*
 438                  * Check if whole sector is erased
 439                  */
 440                 if (i != (info->sector_count - 1))
 441                         size = info->start[i + 1] - info->start[i];
 442                 else
 443                         size = info->start[0] + info->size - info->start[i];
 444                 erased = 1;
 445                 flash = (volatile unsigned long *) info->start[i];
 446                 size = size >> 2;       /* divide by 4 for longword access */
 447                 for (k = 0; k < size; k++) {
 448                         if (*flash++ != 0xffffffff) {
 449                                 erased = 0;
 450                                 break;
 451                         }
 452                 }
 453
 454                 if ((i % 5) == 0)
 455                         printf ("\n");
 456                 /* print empty and read-only info */
 457                 printf (" %08lX%s%s",
 458                         info->start[i],
 459                         erased ? " E" : "  ",
 460                         info->protect[i] ? "RO " : "   ");
 461 #else
 462                 if ((i % 5) == 0)
 463                         printf ("\n   ");
 464                 printf (" %08lX%s",
 465                         info->start[i], info->protect[i] ? " (RO)" : "     ");
 466 #endif
 467         }
 468         putc ('\n');
 469         return;
 470 }
 471
 472 /*-----------------------------------------------------------------------
 473  * Copy memory to flash, returns:
 474  * 0 - OK
 475  * 1 - write timeout
 476  * 2 - Flash not erased
 477  */
 478 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 479 {
 480         ulong wp;
 481         ulong cp;
 482         int aln;
 483         cfiword_t cword;
 484         int i, rc;
 485
 486 #ifdef CFG_FLASH_USE_BUFFER_WRITE
 487         int buffered_size;
 488 #endif
 489         /* get lower aligned address */
 490         /* get lower aligned address */
 491         wp = (addr & ~(info->portwidth - 1));
 492
 493         /* handle unaligned start */
 494         if ((aln = addr - wp) != 0) {
 495                 cword.l = 0;
 496                 cp = wp;
 497                 for (i = 0; i < aln; ++i, ++cp)
 498                         flash_add_byte (info, &cword, (*(uchar *) cp));
 499
 500                 for (; (i < info->portwidth) && (cnt > 0); i++) {
 501                         flash_add_byte (info, &cword, *src++);
 502                         cnt--;
 503                         cp++;
 504                 }
 505                 for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp)
 506                         flash_add_byte (info, &cword, (*(uchar *) cp));
 507                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
 508                         return rc;
 509                 wp = cp;
 510         }
 511
 512         /* handle the aligned part */
 513 #ifdef CFG_FLASH_USE_BUFFER_WRITE
 514         buffered_size = (info->portwidth / info->chipwidth);
 515         buffered_size *= info->buffer_size;
 516         while (cnt >= info->portwidth) {
 517                 i = buffered_size > cnt ? cnt : buffered_size;
 518                 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
 519                         return rc;
 520                 wp += i;
 521                 src += i;
 522                 cnt -= i;
 523         }
 524 #else
 525         while (cnt >= info->portwidth) {
 526                 cword.l = 0;
 527                 for (i = 0; i < info->portwidth; i++) {
 528                         flash_add_byte (info, &cword, *src++);
 529                 }
 530                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
 531                         return rc;
 532                 wp += info->portwidth;
 533                 cnt -= info->portwidth;
 534         }
 535 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
 536         if (cnt == 0) {
 537                 return (0);
 538         }
 539
 540         /*
 541          * handle unaligned tail bytes
 542          */
 543         cword.l = 0;
 544         for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
 545                 flash_add_byte (info, &cword, *src++);
 546                 --cnt;
 547         }
 548         for (; i < info->portwidth; ++i, ++cp) {
 549                 flash_add_byte (info, &cword, (*(uchar *) cp));
 550         }
 551
 552         return flash_write_cfiword (info, wp, cword);
 553 }
 554
 555 /*-----------------------------------------------------------------------
 556  */
 557 #ifdef CFG_FLASH_PROTECTION
 558
 559 int flash_real_protect (flash_info_t * info, long sector, int prot)
 560 {
 561         int retcode = 0;
 562
 563         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 564         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
 565         if (prot)
 566                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
 567         else
 568                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
 569
 570         if ((retcode =
 571              flash_full_status_check (info, sector, info->erase_blk_tout,
 572                                       prot ? "protect" : "unprotect")) == 0) {
 573
 574                 info->protect[sector] = prot;
 575                 /* Intel's unprotect unprotects all locking */
 576                 if (prot == 0) {
 577                         flash_sect_t i;
 578
 579                         for (i = 0; i < info->sector_count; i++) {
 580                                 if (info->protect[i])
 581                                         flash_real_protect (info, i, 1);
 582                         }
 583                 }
 584         }
 585         return retcode;
 586 }
 587
 588 /*-----------------------------------------------------------------------
 589  * flash_read_user_serial - read the OneTimeProgramming cells
 590  */
 591 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
 592                              int len)
 593 {
 594         uchar *src;
 595         uchar *dst;
 596
 597         dst = buffer;
 598         src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
 599         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
 600         memcpy (dst, src + offset, len);
 601         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 602 }
 603
 604 /*
 605  * flash_read_factory_serial - read the device Id from the protection area
 606  */
 607 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
 608                                 int len)
 609 {
 610         uchar *src;
 611
 612         src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
 613         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
 614         memcpy (buffer, src + offset, len);
 615         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 616 }
 617
 618 #endif /* CFG_FLASH_PROTECTION */
 619
 620 /*
 621  * flash_is_busy - check to see if the flash is busy
 622  * This routine checks the status of the chip and returns true if the chip is busy
 623  */
 624 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
 625 {
 626         int retval;
 627
 628         switch (info->vendor) {
 629         case CFI_CMDSET_INTEL_STANDARD:
 630         case CFI_CMDSET_INTEL_EXTENDED:
 631                 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
 632                 break;
 633         case CFI_CMDSET_AMD_STANDARD:
 634         case CFI_CMDSET_AMD_EXTENDED:
 635                 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
 636                 break;
 637         default:
 638                 retval = 0;
 639         }
 640         debug ("flash_is_busy: %d\n", retval);
 641         return retval;
 642 }
 643
 644 /*-----------------------------------------------------------------------
 645  *  wait for XSR.7 to be set. Time out with an error if it does not.
 646  *  This routine does not set the flash to read-array mode.
 647  */
 648 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 649                                ulong tout, char *prompt)
 650 {
 651         ulong start;
 652
 653         /* Wait for command completion */
 654         start = get_timer (0);
 655         while (flash_is_busy (info, sector)) {
 656                 if (get_timer (start) > info->erase_blk_tout * CFG_HZ) {
 657                         printf ("Flash %s timeout at address %lx data %lx\n",
 658                                 prompt, info->start[sector],
 659                                 flash_read_long (info, sector, 0));
 660                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 661                         return ERR_TIMOUT;
 662                 }
 663         }
 664         return ERR_OK;
 665 }
 666
 667 /*-----------------------------------------------------------------------
 668  * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
 669  * This routine sets the flash to read-array mode.
 670  */
 671 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 672                                     ulong tout, char *prompt)
 673 {
 674         int retcode;
 675
 676         retcode = flash_status_check (info, sector, tout, prompt);
 677         switch (info->vendor) {
 678         case CFI_CMDSET_INTEL_EXTENDED:
 679         case CFI_CMDSET_INTEL_STANDARD:
 680                 if ((retcode != ERR_OK)
 681                     && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 682                         retcode = ERR_INVAL;
 683                         printf ("Flash %s error at address %lx\n", prompt,
 684                                 info->start[sector]);
 685                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
 686                                 puts ("Command Sequence Error.\n");
 687                         } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
 688                                 puts ("Block Erase Error.\n");
 689                                 retcode = ERR_NOT_ERASED;
 690                         } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
 691                                 puts ("Locking Error\n");
 692                         }
 693                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 694                                 puts ("Block locked.\n");
 695                                 retcode = ERR_PROTECTED;
 696                         }
 697                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 698                                 puts ("Vpp Low Error.\n");
 699                 }
 700                 flash_write_cmd (info, sector, 0, FLASH_CMD_RESET);
 701                 break;
 702         default:
 703                 break;
 704         }
 705         return retcode;
 706 }
 707
 708 /*-----------------------------------------------------------------------
 709  */
 710 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 711 {
 712 #if defined(__LITTLE_ENDIAN)
 713         unsigned short  w;
 714         unsigned int    l;
 715         unsigned long long ll;
 716 #endif
 717
 718         switch (info->portwidth) {
 719         case FLASH_CFI_8BIT:
 720                 cword->c = c;
 721                 break;
 722         case FLASH_CFI_16BIT:
 723 #if defined(__LITTLE_ENDIAN)
 724                 w = c;
 725                 w <<= 8;
 726                 cword->w = (cword->w >> 8) | w;
 727 #else
 728                 cword->w = (cword->w << 8) | c;
 729 #endif
 730                 break;
 731         case FLASH_CFI_32BIT:
 732 #if defined(__LITTLE_ENDIAN)
 733                 l = c;
 734                 l <<= 24;
 735                 cword->l = (cword->l >> 8) | l;
 736 #else
 737                 cword->l = (cword->l << 8) | c;
 738 #endif
 739                 break;
 740         case FLASH_CFI_64BIT:
 741 #if defined(__LITTLE_ENDIAN)
 742                 ll = c;
 743                 ll <<= 56;
 744                 cword->ll = (cword->ll >> 8) | ll;
 745 #else
 746                 cword->ll = (cword->ll << 8) | c;
 747 #endif
 748                 break;
 749         }
 750 }
 751
 752
 753 /*-----------------------------------------------------------------------
 754  * make a proper sized command based on the port and chip widths
 755  */
 756 static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
 757 {
 758         int i;
 759
 760 #if defined(__LITTLE_ENDIAN)
 761         ushort stmpw;
 762         uint   stmpi;
 763 #endif
 764         uchar *cp = (uchar *) cmdbuf;
 765
 766         for (i = 0; i < info->portwidth; i++)
 767                 *cp++ = ((i + 1) % info->chipwidth) ? '\0' : cmd;
 768 #if defined(__LITTLE_ENDIAN)
 769         switch (info->portwidth) {
 770         case FLASH_CFI_8BIT:
 771                 break;
 772         case FLASH_CFI_16BIT:
 773                 stmpw = *(ushort *) cmdbuf;
 774                 *(ushort *) cmdbuf = __swab16 (stmpw);
 775                 break;
 776         case FLASH_CFI_32BIT:
 777                 stmpi = *(uint *) cmdbuf;
 778                 *(uint *) cmdbuf = __swab32 (stmpi);
 779                 break;
 780         default:
 781                 puts ("WARNING: flash_make_cmd: unsuppported LittleEndian mode\n");
 782                 break;
 783         }
 784 #endif
 785 }
 786
 787 /*
 788  * Write a proper sized command to the correct address
 789  */
 790 static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 791 {
 792
 793         volatile cfiptr_t addr;
 794         cfiword_t cword;
 795
 796         addr.cp = flash_make_addr (info, sect, offset);
 797         flash_make_cmd (info, cmd, &cword);
 798         switch (info->portwidth) {
 799         case FLASH_CFI_8BIT:
 800                 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
 801                        cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 802                 *addr.cp = cword.c;
 803                 break;
 804         case FLASH_CFI_16BIT:
 805                 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
 806                        cmd, cword.w,
 807                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 808                 *addr.wp = cword.w;
 809                 break;
 810         case FLASH_CFI_32BIT:
 811                 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
 812                        cmd, cword.l,
 813                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 814                 *addr.lp = cword.l;
 815                 break;
 816         case FLASH_CFI_64BIT:
 817 #ifdef DEBUG
 818                 {
 819                         char str[20];
 820
 821                         print_longlong (str, cword.ll);
 822
 823                         debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 824                                addr.llp, cmd, str,
 825                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 826                 }
 827 #endif
 828                 *addr.llp = cword.ll;
 829                 break;
 830         }
 831 }
 832
 833 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
 834 {
 835         flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START);
 836         flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK);
 837 }
 838
 839 /*-----------------------------------------------------------------------
 840  */
 841 static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 842 {
 843         cfiptr_t cptr;
 844         cfiword_t cword;
 845         int retval;
 846
 847         cptr.cp = flash_make_addr (info, sect, offset);
 848         flash_make_cmd (info, cmd, &cword);
 849
 850         debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
 851         switch (info->portwidth) {
 852         case FLASH_CFI_8BIT:
 853                 debug ("is= %x %x\n", cptr.cp[0], cword.c);
 854                 retval = (cptr.cp[0] == cword.c);
 855                 break;
 856         case FLASH_CFI_16BIT:
 857                 debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
 858                 retval = (cptr.wp[0] == cword.w);
 859                 break;
 860         case FLASH_CFI_32BIT:
 861                 debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
 862                 retval = (cptr.lp[0] == cword.l);
 863                 break;
 864         case FLASH_CFI_64BIT:
 865 #ifdef DEBUG
 866                 {
 867                         char str1[20];
 868                         char str2[20];
 869
 870                         print_longlong (str1, cptr.llp[0]);
 871                         print_longlong (str2, cword.ll);
 872                         debug ("is= %s %s\n", str1, str2);
 873                 }
 874 #endif
 875                 retval = (cptr.llp[0] == cword.ll);
 876                 break;
 877         default:
 878                 retval = 0;
 879                 break;
 880         }
 881         return retval;
 882 }
 883
 884 /*-----------------------------------------------------------------------
 885  */
 886 static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 887 {
 888         cfiptr_t cptr;
 889         cfiword_t cword;
 890         int retval;
 891
 892         cptr.cp = flash_make_addr (info, sect, offset);
 893         flash_make_cmd (info, cmd, &cword);
 894         switch (info->portwidth) {
 895         case FLASH_CFI_8BIT:
 896                 retval = ((cptr.cp[0] & cword.c) == cword.c);
 897                 break;
 898         case FLASH_CFI_16BIT:
 899                 retval = ((cptr.wp[0] & cword.w) == cword.w);
 900                 break;
 901         case FLASH_CFI_32BIT:
 902                 retval = ((cptr.lp[0] & cword.l) == cword.l);
 903                 break;
 904         case FLASH_CFI_64BIT:
 905                 retval = ((cptr.llp[0] & cword.ll) == cword.ll);
 906                 break;
 907         default:
 908                 retval = 0;
 909                 break;
 910         }
 911         return retval;
 912 }
 913
 914 /*-----------------------------------------------------------------------
 915  */
 916 static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 917 {
 918         cfiptr_t cptr;
 919         cfiword_t cword;
 920         int retval;
 921
 922         cptr.cp = flash_make_addr (info, sect, offset);
 923         flash_make_cmd (info, cmd, &cword);
 924         switch (info->portwidth) {
 925         case FLASH_CFI_8BIT:
 926                 retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c));
 927                 break;
 928         case FLASH_CFI_16BIT:
 929                 retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
 930                 break;
 931         case FLASH_CFI_32BIT:
 932                 retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l));
 933                 break;
 934         case FLASH_CFI_64BIT:
 935                 retval = ((cptr.llp[0] & cword.ll) !=
 936                           (cptr.llp[0] & cword.ll));
 937                 break;
 938         default:
 939                 retval = 0;
 940                 break;
 941         }
 942         return retval;
 943 }
 944
 945 /*-----------------------------------------------------------------------
 946  * detect if flash is compatible with the Common Flash Interface (CFI)
 947  * http://www.jedec.org/download/search/jesd68.pdf
 948  *
 949 */
 950 static int flash_detect_cfi (flash_info_t * info)
 951 {
 952         debug ("flash detect cfi\n");
 953
 954         for (info->portwidth = FLASH_CFI_8BIT;
 955              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
 956                 for (info->chipwidth = FLASH_CFI_BY8;
 957                      info->chipwidth <= info->portwidth;
 958                      info->chipwidth <<= 1) {
 959                         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 960                         flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI);
 961                         if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
 962                             && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
 963                             && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
 964                                 info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
 965                                 debug ("device interface is %d\n",
 966                                        info->interface);
 967                                 debug ("found port %d chip %d ",
 968                                        info->portwidth, info->chipwidth);
 969                                 debug ("port %d bits chip %d bits\n",
 970                                        info->portwidth << CFI_FLASH_SHIFT_WIDTH,
 971                                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 972                                 return 1;
 973                         }
 974                 }
 975         }
 976         debug ("not found\n");
 977         return 0;
 978 }
 979
 980 /*
 981  * The following code cannot be run from FLASH!
 982  *
 983  */
 984 static ulong flash_get_size (ulong base, int banknum)
 985 {
 986         flash_info_t *info = &flash_info[banknum];
 987         int i, j;
 988         flash_sect_t sect_cnt;
 989         unsigned long sector;
 990         unsigned long tmp;
 991         int size_ratio;
 992         uchar num_erase_regions;
 993         int erase_region_size;
 994         int erase_region_count;
 995
 996         info->start[0] = base;
 997
 998         if (flash_detect_cfi (info)) {
 999                 info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR);
1000 #ifdef DEBUG
1001                 flash_printqry (info, 0);
1002 #endif
1003                 switch (info->vendor) {
1004                 case CFI_CMDSET_INTEL_STANDARD:
1005                 case CFI_CMDSET_INTEL_EXTENDED:
1006                 default:
1007                         info->cmd_reset = FLASH_CMD_RESET;
1008                         break;
1009                 case CFI_CMDSET_AMD_STANDARD:
1010                 case CFI_CMDSET_AMD_EXTENDED:
1011                         info->cmd_reset = AMD_CMD_RESET;
1012                         break;
1013                 }
1014
1015                 debug ("manufacturer is %d\n", info->vendor);
1016                 size_ratio = info->portwidth / info->chipwidth;
1017                 /* if the chip is x8/x16 reduce the ratio by half */
1018                 if ((info->interface == FLASH_CFI_X8X16)
1019                     && (info->chipwidth == FLASH_CFI_BY8)) {
1020                         size_ratio >>= 1;
1021                 }
1022                 num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS);
1023                 debug ("size_ratio %d port %d bits chip %d bits\n",
1024                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1025                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1026                 debug ("found %d erase regions\n", num_erase_regions);
1027                 sect_cnt = 0;
1028                 sector = base;
1029                 for (i = 0; i < num_erase_regions; i++) {
1030                         if (i > NUM_ERASE_REGIONS) {
1031                                 printf ("%d erase regions found, only %d used\n",
1032                                         num_erase_regions, NUM_ERASE_REGIONS);
1033                                 break;
1034                         }
1035                         tmp = flash_read_long (info, 0,
1036                                                FLASH_OFFSET_ERASE_REGIONS +
1037                                                i * 4);
1038                         erase_region_size =
1039                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1040                         tmp >>= 16;
1041                         erase_region_count = (tmp & 0xffff) + 1;
1042                         debug ("erase_region_count = %d erase_region_size = %d\n",
1043                                 erase_region_count, erase_region_size);
1044                         for (j = 0; j < erase_region_count; j++) {
1045                                 info->start[sect_cnt] = sector;
1046                                 sector += (erase_region_size * size_ratio);
1047                                 info->protect[sect_cnt] =
1048                                         flash_isset (info, sect_cnt,
1049                                                      FLASH_OFFSET_PROTECT,
1050                                                      FLASH_STATUS_PROTECT);
1051                                 sect_cnt++;
1052                         }
1053                 }
1054
1055                 info->sector_count = sect_cnt;
1056                 /* multiply the size by the number of chips */
1057                 info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio;
1058                 info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
1059                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
1060                 info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
1061                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
1062                 info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
1063                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT);
1064                 info->write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT))) / 1000;
1065                 info->flash_id = FLASH_MAN_CFI;
1066                 if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
1067                         info->portwidth >>= 1;  /* XXX - Need to test on x8/x16 in parallel. */
1068                 }
1069         }
1070
1071         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
1072         return (info->size);
1073 }
1074
1075
1076 /*-----------------------------------------------------------------------
1077  */
1078 static int flash_write_cfiword (flash_info_t * info, ulong dest,
1079                                 cfiword_t cword)
1080 {
1081
1082         cfiptr_t ctladdr;
1083         cfiptr_t cptr;
1084         int flag;
1085
1086         ctladdr.cp = flash_make_addr (info, 0, 0);
1087         cptr.cp = (uchar *) dest;
1088
1089
1090         /* Check if Flash is (sufficiently) erased */
1091         switch (info->portwidth) {
1092         case FLASH_CFI_8BIT:
1093                 flag = ((cptr.cp[0] & cword.c) == cword.c);
1094                 break;
1095         case FLASH_CFI_16BIT:
1096                 flag = ((cptr.wp[0] & cword.w) == cword.w);
1097                 break;
1098         case FLASH_CFI_32BIT:
1099                 flag = ((cptr.lp[0] & cword.l) == cword.l);
1100                 break;
1101         case FLASH_CFI_64BIT:
1102                 flag = ((cptr.lp[0] & cword.ll) == cword.ll);
1103                 break;
1104         default:
1105                 return 2;
1106         }
1107         if (!flag)
1108                 return 2;
1109
1110         /* Disable interrupts which might cause a timeout here */
1111         flag = disable_interrupts ();
1112
1113         switch (info->vendor) {
1114         case CFI_CMDSET_INTEL_EXTENDED:
1115         case CFI_CMDSET_INTEL_STANDARD:
1116                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
1117                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
1118                 break;
1119         case CFI_CMDSET_AMD_EXTENDED:
1120         case CFI_CMDSET_AMD_STANDARD:
1121                 flash_unlock_seq (info, 0);
1122                 flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE);
1123                 break;
1124         }
1125
1126         switch (info->portwidth) {
1127         case FLASH_CFI_8BIT:
1128                 cptr.cp[0] = cword.c;
1129                 break;
1130         case FLASH_CFI_16BIT:
1131                 cptr.wp[0] = cword.w;
1132                 break;
1133         case FLASH_CFI_32BIT:
1134                 cptr.lp[0] = cword.l;
1135                 break;
1136         case FLASH_CFI_64BIT:
1137                 cptr.llp[0] = cword.ll;
1138                 break;
1139         }
1140
1141         /* re-enable interrupts if necessary */
1142         if (flag)
1143                 enable_interrupts ();
1144
1145         return flash_full_status_check (info, 0, info->write_tout, "write");
1146 }
1147
1148 #ifdef CFG_FLASH_USE_BUFFER_WRITE
1149
1150 /* loop through the sectors from the highest address
1151  * when the passed address is greater or equal to the sector address
1152  * we have a match
1153  */
1154 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
1155 {
1156         flash_sect_t sector;
1157
1158         for (sector = info->sector_count - 1; sector >= 0; sector--) {
1159                 if (addr >= info->start[sector])
1160                         break;
1161         }
1162         return sector;
1163 }
1164
1165 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
1166                                   int len)
1167 {
1168         flash_sect_t sector;
1169         int cnt;
1170         int retcode;
1171         volatile cfiptr_t src;
1172         volatile cfiptr_t dst;
1173         /* buffered writes in the AMD chip set is not supported yet */
1174         if((info->vendor ==  CFI_CMDSET_AMD_STANDARD) ||
1175                 (info->vendor == CFI_CMDSET_AMD_EXTENDED))
1176                 return ERR_INVAL;
1177
1178         src.cp = cp;
1179         dst.cp = (uchar *) dest;
1180         sector = find_sector (info, dest);
1181         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1182         flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
1183         if ((retcode =
1184              flash_status_check (info, sector, info->buffer_write_tout,
1185                                  "write to buffer")) == ERR_OK) {
1186                 /* reduce the number of loops by the width of the port  */
1187                 switch (info->portwidth) {
1188                 case FLASH_CFI_8BIT:
1189                         cnt = len;
1190                         break;
1191                 case FLASH_CFI_16BIT:
1192                         cnt = len >> 1;
1193                         break;
1194                 case FLASH_CFI_32BIT:
1195                         cnt = len >> 2;
1196                         break;
1197                 case FLASH_CFI_64BIT:
1198                         cnt = len >> 3;
1199                         break;
1200                 default:
1201                         return ERR_INVAL;
1202                         break;
1203                 }
1204                 flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
1205                 while (cnt-- > 0) {
1206                         switch (info->portwidth) {
1207                         case FLASH_CFI_8BIT:
1208                                 *dst.cp++ = *src.cp++;
1209                                 break;
1210                         case FLASH_CFI_16BIT:
1211                                 *dst.wp++ = *src.wp++;
1212                                 break;
1213                         case FLASH_CFI_32BIT:
1214                                 *dst.lp++ = *src.lp++;
1215                                 break;
1216                         case FLASH_CFI_64BIT:
1217                                 *dst.llp++ = *src.llp++;
1218                                 break;
1219                         default:
1220                                 return ERR_INVAL;
1221                                 break;
1222                         }
1223                 }
1224                 flash_write_cmd (info, sector, 0,
1225                                  FLASH_CMD_WRITE_BUFFER_CONFIRM);
1226                 retcode =
1227                         flash_full_status_check (info, sector,
1228                                                  info->buffer_write_tout,
1229                                                  "buffer write");
1230         }
1231         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1232         return retcode;
1233 }
1234 #endif /* CFG_USE_FLASH_BUFFER_WRITE */
1235 #endif /* CFG_FLASH_CFI */