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                 i -= (i % info->portwidth);
 521                 wp += i;
 522                 src += i;
 523                 cnt -= i;
 524         }
 525 #else
 526         while (cnt >= info->portwidth) {
 527                 cword.l = 0;
 528                 for (i = 0; i < info->portwidth; i++) {
 529                         flash_add_byte (info, &cword, *src++);
 530                 }
 531                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
 532                         return rc;
 533                 wp += info->portwidth;
 534                 cnt -= info->portwidth;
 535         }
 536 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
 537         if (cnt == 0) {
 538                 return (0);
 539         }
 540
 541         /*
 542          * handle unaligned tail bytes
 543          */
 544         cword.l = 0;
 545         for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
 546                 flash_add_byte (info, &cword, *src++);
 547                 --cnt;
 548         }
 549         for (; i < info->portwidth; ++i, ++cp) {
 550                 flash_add_byte (info, &cword, (*(uchar *) cp));
 551         }
 552
 553         return flash_write_cfiword (info, wp, cword);
 554 }
 555
 556 /*-----------------------------------------------------------------------
 557  */
 558 #ifdef CFG_FLASH_PROTECTION
 559
 560 int flash_real_protect (flash_info_t * info, long sector, int prot)
 561 {
 562         int retcode = 0;
 563
 564         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 565         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
 566         if (prot)
 567                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
 568         else
 569                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
 570
 571         if ((retcode =
 572              flash_full_status_check (info, sector, info->erase_blk_tout,
 573                                       prot ? "protect" : "unprotect")) == 0) {
 574
 575                 info->protect[sector] = prot;
 576                 /* Intel's unprotect unprotects all locking */
 577                 if (prot == 0) {
 578                         flash_sect_t i;
 579
 580                         for (i = 0; i < info->sector_count; i++) {
 581                                 if (info->protect[i])
 582                                         flash_real_protect (info, i, 1);
 583                         }
 584                 }
 585         }
 586         return retcode;
 587 }
 588
 589 /*-----------------------------------------------------------------------
 590  * flash_read_user_serial - read the OneTimeProgramming cells
 591  */
 592 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
 593                              int len)
 594 {
 595         uchar *src;
 596         uchar *dst;
 597
 598         dst = buffer;
 599         src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
 600         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
 601         memcpy (dst, src + offset, len);
 602         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 603 }
 604
 605 /*
 606  * flash_read_factory_serial - read the device Id from the protection area
 607  */
 608 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
 609                                 int len)
 610 {
 611         uchar *src;
 612
 613         src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
 614         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
 615         memcpy (buffer, src + offset, len);
 616         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 617 }
 618
 619 #endif /* CFG_FLASH_PROTECTION */
 620
 621 /*
 622  * flash_is_busy - check to see if the flash is busy
 623  * This routine checks the status of the chip and returns true if the chip is busy
 624  */
 625 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
 626 {
 627         int retval;
 628
 629         switch (info->vendor) {
 630         case CFI_CMDSET_INTEL_STANDARD:
 631         case CFI_CMDSET_INTEL_EXTENDED:
 632                 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
 633                 break;
 634         case CFI_CMDSET_AMD_STANDARD:
 635         case CFI_CMDSET_AMD_EXTENDED:
 636                 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
 637                 break;
 638         default:
 639                 retval = 0;
 640         }
 641         debug ("flash_is_busy: %d\n", retval);
 642         return retval;
 643 }
 644
 645 /*-----------------------------------------------------------------------
 646  *  wait for XSR.7 to be set. Time out with an error if it does not.
 647  *  This routine does not set the flash to read-array mode.
 648  */
 649 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 650                                ulong tout, char *prompt)
 651 {
 652         ulong start;
 653
 654         /* Wait for command completion */
 655         start = get_timer (0);
 656         while (flash_is_busy (info, sector)) {
 657                 if (get_timer (start) > info->erase_blk_tout * CFG_HZ) {
 658                         printf ("Flash %s timeout at address %lx data %lx\n",
 659                                 prompt, info->start[sector],
 660                                 flash_read_long (info, sector, 0));
 661                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 662                         return ERR_TIMOUT;
 663                 }
 664         }
 665         return ERR_OK;
 666 }
 667
 668 /*-----------------------------------------------------------------------
 669  * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
 670  * This routine sets the flash to read-array mode.
 671  */
 672 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 673                                     ulong tout, char *prompt)
 674 {
 675         int retcode;
 676
 677         retcode = flash_status_check (info, sector, tout, prompt);
 678         switch (info->vendor) {
 679         case CFI_CMDSET_INTEL_EXTENDED:
 680         case CFI_CMDSET_INTEL_STANDARD:
 681                 if ((retcode != ERR_OK)
 682                     && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 683                         retcode = ERR_INVAL;
 684                         printf ("Flash %s error at address %lx\n", prompt,
 685                                 info->start[sector]);
 686                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
 687                                 puts ("Command Sequence Error.\n");
 688                         } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
 689                                 puts ("Block Erase Error.\n");
 690                                 retcode = ERR_NOT_ERASED;
 691                         } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
 692                                 puts ("Locking Error\n");
 693                         }
 694                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 695                                 puts ("Block locked.\n");
 696                                 retcode = ERR_PROTECTED;
 697                         }
 698                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 699                                 puts ("Vpp Low Error.\n");
 700                 }
 701                 flash_write_cmd (info, sector, 0, FLASH_CMD_RESET);
 702                 break;
 703         default:
 704                 break;
 705         }
 706         return retcode;
 707 }
 708
 709 /*-----------------------------------------------------------------------
 710  */
 711 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 712 {
 713 #if defined(__LITTLE_ENDIAN)
 714         unsigned short  w;
 715         unsigned int    l;
 716         unsigned long long ll;
 717 #endif
 718
 719         switch (info->portwidth) {
 720         case FLASH_CFI_8BIT:
 721                 cword->c = c;
 722                 break;
 723         case FLASH_CFI_16BIT:
 724 #if defined(__LITTLE_ENDIAN)
 725                 w = c;
 726                 w <<= 8;
 727                 cword->w = (cword->w >> 8) | w;
 728 #else
 729                 cword->w = (cword->w << 8) | c;
 730 #endif
 731                 break;
 732         case FLASH_CFI_32BIT:
 733 #if defined(__LITTLE_ENDIAN)
 734                 l = c;
 735                 l <<= 24;
 736                 cword->l = (cword->l >> 8) | l;
 737 #else
 738                 cword->l = (cword->l << 8) | c;
 739 #endif
 740                 break;
 741         case FLASH_CFI_64BIT:
 742 #if defined(__LITTLE_ENDIAN)
 743                 ll = c;
 744                 ll <<= 56;
 745                 cword->ll = (cword->ll >> 8) | ll;
 746 #else
 747                 cword->ll = (cword->ll << 8) | c;
 748 #endif
 749                 break;
 750         }
 751 }
 752
 753
 754 /*-----------------------------------------------------------------------
 755  * make a proper sized command based on the port and chip widths
 756  */
 757 static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
 758 {
 759         int i;
 760
 761 #if defined(__LITTLE_ENDIAN)
 762         ushort stmpw;
 763         uint   stmpi;
 764 #endif
 765         uchar *cp = (uchar *) cmdbuf;
 766
 767         for (i = 0; i < info->portwidth; i++)
 768                 *cp++ = ((i + 1) % info->chipwidth) ? '\0' : cmd;
 769 #if defined(__LITTLE_ENDIAN)
 770         switch (info->portwidth) {
 771         case FLASH_CFI_8BIT:
 772                 break;
 773         case FLASH_CFI_16BIT:
 774                 stmpw = *(ushort *) cmdbuf;
 775                 *(ushort *) cmdbuf = __swab16 (stmpw);
 776                 break;
 777         case FLASH_CFI_32BIT:
 778                 stmpi = *(uint *) cmdbuf;
 779                 *(uint *) cmdbuf = __swab32 (stmpi);
 780                 break;
 781         default:
 782                 puts ("WARNING: flash_make_cmd: unsuppported LittleEndian mode\n");
 783                 break;
 784         }
 785 #endif
 786 }
 787
 788 /*
 789  * Write a proper sized command to the correct address
 790  */
 791 static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 792 {
 793
 794         volatile cfiptr_t addr;
 795         cfiword_t cword;
 796
 797         addr.cp = flash_make_addr (info, sect, offset);
 798         flash_make_cmd (info, cmd, &cword);
 799         switch (info->portwidth) {
 800         case FLASH_CFI_8BIT:
 801                 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
 802                        cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 803                 *addr.cp = cword.c;
 804                 break;
 805         case FLASH_CFI_16BIT:
 806                 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
 807                        cmd, cword.w,
 808                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 809                 *addr.wp = cword.w;
 810                 break;
 811         case FLASH_CFI_32BIT:
 812                 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
 813                        cmd, cword.l,
 814                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 815                 *addr.lp = cword.l;
 816                 break;
 817         case FLASH_CFI_64BIT:
 818 #ifdef DEBUG
 819                 {
 820                         char str[20];
 821
 822                         print_longlong (str, cword.ll);
 823
 824                         debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 825                                addr.llp, cmd, str,
 826                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 827                 }
 828 #endif
 829                 *addr.llp = cword.ll;
 830                 break;
 831         }
 832 }
 833
 834 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
 835 {
 836         flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START);
 837         flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK);
 838 }
 839
 840 /*-----------------------------------------------------------------------
 841  */
 842 static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 843 {
 844         cfiptr_t cptr;
 845         cfiword_t cword;
 846         int retval;
 847
 848         cptr.cp = flash_make_addr (info, sect, offset);
 849         flash_make_cmd (info, cmd, &cword);
 850
 851         debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
 852         switch (info->portwidth) {
 853         case FLASH_CFI_8BIT:
 854                 debug ("is= %x %x\n", cptr.cp[0], cword.c);
 855                 retval = (cptr.cp[0] == cword.c);
 856                 break;
 857         case FLASH_CFI_16BIT:
 858                 debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
 859                 retval = (cptr.wp[0] == cword.w);
 860                 break;
 861         case FLASH_CFI_32BIT:
 862                 debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
 863                 retval = (cptr.lp[0] == cword.l);
 864                 break;
 865         case FLASH_CFI_64BIT:
 866 #ifdef DEBUG
 867                 {
 868                         char str1[20];
 869                         char str2[20];
 870
 871                         print_longlong (str1, cptr.llp[0]);
 872                         print_longlong (str2, cword.ll);
 873                         debug ("is= %s %s\n", str1, str2);
 874                 }
 875 #endif
 876                 retval = (cptr.llp[0] == cword.ll);
 877                 break;
 878         default:
 879                 retval = 0;
 880                 break;
 881         }
 882         return retval;
 883 }
 884
 885 /*-----------------------------------------------------------------------
 886  */
 887 static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 888 {
 889         cfiptr_t cptr;
 890         cfiword_t cword;
 891         int retval;
 892
 893         cptr.cp = flash_make_addr (info, sect, offset);
 894         flash_make_cmd (info, cmd, &cword);
 895         switch (info->portwidth) {
 896         case FLASH_CFI_8BIT:
 897                 retval = ((cptr.cp[0] & cword.c) == cword.c);
 898                 break;
 899         case FLASH_CFI_16BIT:
 900                 retval = ((cptr.wp[0] & cword.w) == cword.w);
 901                 break;
 902         case FLASH_CFI_32BIT:
 903                 retval = ((cptr.lp[0] & cword.l) == cword.l);
 904                 break;
 905         case FLASH_CFI_64BIT:
 906                 retval = ((cptr.llp[0] & cword.ll) == cword.ll);
 907                 break;
 908         default:
 909                 retval = 0;
 910                 break;
 911         }
 912         return retval;
 913 }
 914
 915 /*-----------------------------------------------------------------------
 916  */
 917 static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
 918 {
 919         cfiptr_t cptr;
 920         cfiword_t cword;
 921         int retval;
 922
 923         cptr.cp = flash_make_addr (info, sect, offset);
 924         flash_make_cmd (info, cmd, &cword);
 925         switch (info->portwidth) {
 926         case FLASH_CFI_8BIT:
 927                 retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c));
 928                 break;
 929         case FLASH_CFI_16BIT:
 930                 retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
 931                 break;
 932         case FLASH_CFI_32BIT:
 933                 retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l));
 934                 break;
 935         case FLASH_CFI_64BIT:
 936                 retval = ((cptr.llp[0] & cword.ll) !=
 937                           (cptr.llp[0] & cword.ll));
 938                 break;
 939         default:
 940                 retval = 0;
 941                 break;
 942         }
 943         return retval;
 944 }
 945
 946 /*-----------------------------------------------------------------------
 947  * detect if flash is compatible with the Common Flash Interface (CFI)
 948  * http://www.jedec.org/download/search/jesd68.pdf
 949  *
 950 */
 951 static int flash_detect_cfi (flash_info_t * info)
 952 {
 953         debug ("flash detect cfi\n");
 954
 955         for (info->portwidth = FLASH_CFI_8BIT;
 956              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
 957                 for (info->chipwidth = FLASH_CFI_BY8;
 958                      info->chipwidth <= info->portwidth;
 959                      info->chipwidth <<= 1) {
 960                         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
 961                         flash_write_cmd (info, 0, FLASH_OFFSET_CFI, FLASH_CMD_CFI);
 962                         if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
 963                             && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
 964                             && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
 965                                 info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
 966                                 debug ("device interface is %d\n",
 967                                        info->interface);
 968                                 debug ("found port %d chip %d ",
 969                                        info->portwidth, info->chipwidth);
 970                                 debug ("port %d bits chip %d bits\n",
 971                                        info->portwidth << CFI_FLASH_SHIFT_WIDTH,
 972                                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 973                                 return 1;
 974                         }
 975                 }
 976         }
 977         debug ("not found\n");
 978         return 0;
 979 }
 980
 981 /*
 982  * The following code cannot be run from FLASH!
 983  *
 984  */
 985 static ulong flash_get_size (ulong base, int banknum)
 986 {
 987         flash_info_t *info = &flash_info[banknum];
 988         int i, j;
 989         flash_sect_t sect_cnt;
 990         unsigned long sector;
 991         unsigned long tmp;
 992         int size_ratio;
 993         uchar num_erase_regions;
 994         int erase_region_size;
 995         int erase_region_count;
 996
 997         info->start[0] = base;
 998
 999         if (flash_detect_cfi (info)) {
1000                 info->vendor = flash_read_ushort (info, 0, FLASH_OFFSET_PRIMARY_VENDOR);
1001 #ifdef DEBUG
1002                 flash_printqry (info, 0);
1003 #endif
1004                 switch (info->vendor) {
1005                 case CFI_CMDSET_INTEL_STANDARD:
1006                 case CFI_CMDSET_INTEL_EXTENDED:
1007                 default:
1008                         info->cmd_reset = FLASH_CMD_RESET;
1009                         break;
1010                 case CFI_CMDSET_AMD_STANDARD:
1011                 case CFI_CMDSET_AMD_EXTENDED:
1012                         info->cmd_reset = AMD_CMD_RESET;
1013                         break;
1014                 }
1015
1016                 debug ("manufacturer is %d\n", info->vendor);
1017                 size_ratio = info->portwidth / info->chipwidth;
1018                 /* if the chip is x8/x16 reduce the ratio by half */
1019                 if ((info->interface == FLASH_CFI_X8X16)
1020                     && (info->chipwidth == FLASH_CFI_BY8)) {
1021                         size_ratio >>= 1;
1022                 }
1023                 num_erase_regions = flash_read_uchar (info, FLASH_OFFSET_NUM_ERASE_REGIONS);
1024                 debug ("size_ratio %d port %d bits chip %d bits\n",
1025                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1026                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1027                 debug ("found %d erase regions\n", num_erase_regions);
1028                 sect_cnt = 0;
1029                 sector = base;
1030                 for (i = 0; i < num_erase_regions; i++) {
1031                         if (i > NUM_ERASE_REGIONS) {
1032                                 printf ("%d erase regions found, only %d used\n",
1033                                         num_erase_regions, NUM_ERASE_REGIONS);
1034                                 break;
1035                         }
1036                         tmp = flash_read_long (info, 0,
1037                                                FLASH_OFFSET_ERASE_REGIONS +
1038                                                i * 4);
1039                         erase_region_size =
1040                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1041                         tmp >>= 16;
1042                         erase_region_count = (tmp & 0xffff) + 1;
1043                         debug ("erase_region_count = %d erase_region_size = %d\n",
1044                                 erase_region_count, erase_region_size);
1045                         for (j = 0; j < erase_region_count; j++) {
1046                                 info->start[sect_cnt] = sector;
1047                                 sector += (erase_region_size * size_ratio);
1048                                 info->protect[sect_cnt] =
1049                                         flash_isset (info, sect_cnt,
1050                                                      FLASH_OFFSET_PROTECT,
1051                                                      FLASH_STATUS_PROTECT);
1052                                 sect_cnt++;
1053                         }
1054                 }
1055
1056                 info->sector_count = sect_cnt;
1057                 /* multiply the size by the number of chips */
1058                 info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio;
1059                 info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
1060                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
1061                 info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
1062                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
1063                 info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
1064                 tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT);
1065                 info->write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT))) / 1000;
1066                 info->flash_id = FLASH_MAN_CFI;
1067                 if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
1068                         info->portwidth >>= 1;  /* XXX - Need to test on x8/x16 in parallel. */
1069                 }
1070         }
1071
1072         flash_write_cmd (info, 0, 0, FLASH_CMD_RESET);
1073         return (info->size);
1074 }
1075
1076
1077 /*-----------------------------------------------------------------------
1078  */
1079 static int flash_write_cfiword (flash_info_t * info, ulong dest,
1080                                 cfiword_t cword)
1081 {
1082
1083         cfiptr_t ctladdr;
1084         cfiptr_t cptr;
1085         int flag;
1086
1087         ctladdr.cp = flash_make_addr (info, 0, 0);
1088         cptr.cp = (uchar *) dest;
1089
1090
1091         /* Check if Flash is (sufficiently) erased */
1092         switch (info->portwidth) {
1093         case FLASH_CFI_8BIT:
1094                 flag = ((cptr.cp[0] & cword.c) == cword.c);
1095                 break;
1096         case FLASH_CFI_16BIT:
1097                 flag = ((cptr.wp[0] & cword.w) == cword.w);
1098                 break;
1099         case FLASH_CFI_32BIT:
1100                 flag = ((cptr.lp[0] & cword.l) == cword.l);
1101                 break;
1102         case FLASH_CFI_64BIT:
1103                 flag = ((cptr.lp[0] & cword.ll) == cword.ll);
1104                 break;
1105         default:
1106                 return 2;
1107         }
1108         if (!flag)
1109                 return 2;
1110
1111         /* Disable interrupts which might cause a timeout here */
1112         flag = disable_interrupts ();
1113
1114         switch (info->vendor) {
1115         case CFI_CMDSET_INTEL_EXTENDED:
1116         case CFI_CMDSET_INTEL_STANDARD:
1117                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
1118                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
1119                 break;
1120         case CFI_CMDSET_AMD_EXTENDED:
1121         case CFI_CMDSET_AMD_STANDARD:
1122                 flash_unlock_seq (info, 0);
1123                 flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE);
1124                 break;
1125         }
1126
1127         switch (info->portwidth) {
1128         case FLASH_CFI_8BIT:
1129                 cptr.cp[0] = cword.c;
1130                 break;
1131         case FLASH_CFI_16BIT:
1132                 cptr.wp[0] = cword.w;
1133                 break;
1134         case FLASH_CFI_32BIT:
1135                 cptr.lp[0] = cword.l;
1136                 break;
1137         case FLASH_CFI_64BIT:
1138                 cptr.llp[0] = cword.ll;
1139                 break;
1140         }
1141
1142         /* re-enable interrupts if necessary */
1143         if (flag)
1144                 enable_interrupts ();
1145
1146         return flash_full_status_check (info, 0, info->write_tout, "write");
1147 }
1148
1149 #ifdef CFG_FLASH_USE_BUFFER_WRITE
1150
1151 /* loop through the sectors from the highest address
1152  * when the passed address is greater or equal to the sector address
1153  * we have a match
1154  */
1155 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
1156 {
1157         flash_sect_t sector;
1158
1159         for (sector = info->sector_count - 1; sector >= 0; sector--) {
1160                 if (addr >= info->start[sector])
1161                         break;
1162         }
1163         return sector;
1164 }
1165
1166 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
1167                                   int len)
1168 {
1169         flash_sect_t sector;
1170         int cnt;
1171         int retcode;
1172         volatile cfiptr_t src;
1173         volatile cfiptr_t dst;
1174         /* buffered writes in the AMD chip set is not supported yet */
1175         if((info->vendor ==  CFI_CMDSET_AMD_STANDARD) ||
1176                 (info->vendor == CFI_CMDSET_AMD_EXTENDED))
1177                 return ERR_INVAL;
1178
1179         src.cp = cp;
1180         dst.cp = (uchar *) dest;
1181         sector = find_sector (info, dest);
1182         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1183         flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
1184         if ((retcode =
1185              flash_status_check (info, sector, info->buffer_write_tout,
1186                                  "write to buffer")) == ERR_OK) {
1187                 /* reduce the number of loops by the width of the port  */
1188                 switch (info->portwidth) {
1189                 case FLASH_CFI_8BIT:
1190                         cnt = len;
1191                         break;
1192                 case FLASH_CFI_16BIT:
1193                         cnt = len >> 1;
1194                         break;
1195                 case FLASH_CFI_32BIT:
1196                         cnt = len >> 2;
1197                         break;
1198                 case FLASH_CFI_64BIT:
1199                         cnt = len >> 3;
1200                         break;
1201                 default:
1202                         return ERR_INVAL;
1203                         break;
1204                 }
1205                 flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
1206                 while (cnt-- > 0) {
1207                         switch (info->portwidth) {
1208                         case FLASH_CFI_8BIT:
1209                                 *dst.cp++ = *src.cp++;
1210                                 break;
1211                         case FLASH_CFI_16BIT:
1212                                 *dst.wp++ = *src.wp++;
1213                                 break;
1214                         case FLASH_CFI_32BIT:
1215                                 *dst.lp++ = *src.lp++;
1216                                 break;
1217                         case FLASH_CFI_64BIT:
1218                                 *dst.llp++ = *src.llp++;
1219                                 break;
1220                         default:
1221                                 return ERR_INVAL;
1222                                 break;
1223                         }
1224                 }
1225                 flash_write_cmd (info, sector, 0,
1226                                  FLASH_CMD_WRITE_BUFFER_CONFIRM);
1227                 retcode =
1228                         flash_full_status_check (info, sector,
1229                                                  info->buffer_write_tout,
1230                                                  "buffer write");
1231         }
1232         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1233         return retcode;
1234 }
1235 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
1236 #endif /* CFG_FLASH_CFI */