drivers/mtd/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  *
   8  * Copyright (C) 2004
   9  * Ed Okerson
  10  *
  11  * Copyright (C) 2006
  12  * Tolunay Orkun <listmember@orkun.us>
  13  *
  14  * See file CREDITS for list of people who contributed to this
  15  * project.
  16  *
  17  * This program is free software; you can redistribute it and/or
  18  * modify it under the terms of the GNU General Public License as
  19  * published by the Free Software Foundation; either version 2 of
  20  * the License, or (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program; if not, write to the Free Software
  29  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  30  * MA 02111-1307 USA
  31  *
  32  */
  33
  34 /* The DEBUG define must be before common to enable debugging */
  35 /* #define DEBUG        */
  36
  37 #include <common.h>
  38 #include <asm/processor.h>
  39 #include <asm/io.h>
  40 #include <asm/byteorder.h>
  41 #include <environment.h>
  42 #include <mtd/cfi_flash.h>
  43
  44 /*
  45  * This file implements a Common Flash Interface (CFI) driver for
  46  * U-Boot.
  47  *
  48  * The width of the port and the width of the chips are determined at
  49  * initialization.  These widths are used to calculate the address for
  50  * access CFI data structures.
  51  *
  52  * References
  53  * JEDEC Standard JESD68 - Common Flash Interface (CFI)
  54  * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
  55  * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
  56  * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
  57  * AMD CFI Specification, Release 2.0 December 1, 2001
  58  * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
  59  *   Device IDs, Publication Number 25538 Revision A, November 8, 2001
  60  *
  61  * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
  62  * reading and writing ... (yes there is such a Hardware).
  63  */
  64
  65 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
  66 static uint flash_verbose = 1;
  67
  68 flash_info_t flash_info[CFI_MAX_FLASH_BANKS];   /* FLASH chips info */
  69
  70 /*
  71  * Check if chip width is defined. If not, start detecting with 8bit.
  72  */
  73 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
  74 #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_8BIT
  75 #endif
  76
  77 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
  78 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
  79 #endif
  80
  81 static phys_addr_t __cfi_flash_bank_addr(int i)
  82 {
  83         return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
  84 }
  85 phys_addr_t cfi_flash_bank_addr(int i)
  86         __attribute__((weak, alias("__cfi_flash_bank_addr")));
  87
  88 static void __flash_write8(u8 value, void *addr)
  89 {
  90         __raw_writeb(value, addr);
  91 }
  92
  93 static void __flash_write16(u16 value, void *addr)
  94 {
  95         __raw_writew(value, addr);
  96 }
  97
  98 static void __flash_write32(u32 value, void *addr)
  99 {
 100         __raw_writel(value, addr);
 101 }
 102
 103 static void __flash_write64(u64 value, void *addr)
 104 {
 105         /* No architectures currently implement __raw_writeq() */
 106         *(volatile u64 *)addr = value;
 107 }
 108
 109 static u8 __flash_read8(void *addr)
 110 {
 111         return __raw_readb(addr);
 112 }
 113
 114 static u16 __flash_read16(void *addr)
 115 {
 116         return __raw_readw(addr);
 117 }
 118
 119 static u32 __flash_read32(void *addr)
 120 {
 121         return __raw_readl(addr);
 122 }
 123
 124 static u64 __flash_read64(void *addr)
 125 {
 126         /* No architectures currently implement __raw_readq() */
 127         return *(volatile u64 *)addr;
 128 }
 129
 130 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
 131 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
 132 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
 133 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
 134 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
 135 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
 136 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
 137 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
 138 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
 139 #else
 140 #define flash_write8    __flash_write8
 141 #define flash_write16   __flash_write16
 142 #define flash_write32   __flash_write32
 143 #define flash_write64   __flash_write64
 144 #define flash_read8     __flash_read8
 145 #define flash_read16    __flash_read16
 146 #define flash_read32    __flash_read32
 147 #define flash_read64    __flash_read64
 148 #endif
 149
 150 /*-----------------------------------------------------------------------
 151  */
 152 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
 153 flash_info_t *flash_get_info(ulong base)
 154 {
 155         int i;
 156         flash_info_t *info = NULL;
 157
 158         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
 159                 info = & flash_info[i];
 160                 if (info->size && info->start[0] <= base &&
 161                     base <= info->start[0] + info->size - 1)
 162                         break;
 163         }
 164
 165         return info;
 166 }
 167 #endif
 168
 169 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
 170 {
 171         if (sect != (info->sector_count - 1))
 172                 return info->start[sect + 1] - info->start[sect];
 173         else
 174                 return info->start[0] + info->size - info->start[sect];
 175 }
 176
 177 /*-----------------------------------------------------------------------
 178  * create an address based on the offset and the port width
 179  */
 180 static inline void *
 181 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
 182 {
 183         unsigned int byte_offset = offset * info->portwidth;
 184
 185         return (void *)(info->start[sect] + byte_offset);
 186 }
 187
 188 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
 189                 unsigned int offset, void *addr)
 190 {
 191 }
 192
 193 /*-----------------------------------------------------------------------
 194  * make a proper sized command based on the port and chip widths
 195  */
 196 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
 197 {
 198         int i;
 199         int cword_offset;
 200         int cp_offset;
 201 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 202         u32 cmd_le = cpu_to_le32(cmd);
 203 #endif
 204         uchar val;
 205         uchar *cp = (uchar *) cmdbuf;
 206
 207         for (i = info->portwidth; i > 0; i--){
 208                 cword_offset = (info->portwidth-i)%info->chipwidth;
 209 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 210                 cp_offset = info->portwidth - i;
 211                 val = *((uchar*)&cmd_le + cword_offset);
 212 #else
 213                 cp_offset = i - 1;
 214                 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
 215 #endif
 216                 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
 217         }
 218 }
 219
 220 #ifdef DEBUG
 221 /*-----------------------------------------------------------------------
 222  * Debug support
 223  */
 224 static void print_longlong (char *str, unsigned long long data)
 225 {
 226         int i;
 227         char *cp;
 228
 229         cp = (char *) &data;
 230         for (i = 0; i < 8; i++)
 231                 sprintf (&str[i * 2], "%2.2x", *cp++);
 232 }
 233
 234 static void flash_printqry (struct cfi_qry *qry)
 235 {
 236         u8 *p = (u8 *)qry;
 237         int x, y;
 238
 239         for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
 240                 debug("%02x : ", x);
 241                 for (y = 0; y < 16; y++)
 242                         debug("%2.2x ", p[x + y]);
 243                 debug(" ");
 244                 for (y = 0; y < 16; y++) {
 245                         unsigned char c = p[x + y];
 246                         if (c >= 0x20 && c <= 0x7e)
 247                                 debug("%c", c);
 248                         else
 249                                 debug(".");
 250                 }
 251                 debug("\n");
 252         }
 253 }
 254 #endif
 255
 256
 257 /*-----------------------------------------------------------------------
 258  * read a character at a port width address
 259  */
 260 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
 261 {
 262         uchar *cp;
 263         uchar retval;
 264
 265         cp = flash_map (info, 0, offset);
 266 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 267         retval = flash_read8(cp);
 268 #else
 269         retval = flash_read8(cp + info->portwidth - 1);
 270 #endif
 271         flash_unmap (info, 0, offset, cp);
 272         return retval;
 273 }
 274
 275 /*-----------------------------------------------------------------------
 276  * read a word at a port width address, assume 16bit bus
 277  */
 278 static inline ushort flash_read_word (flash_info_t * info, uint offset)
 279 {
 280         ushort *addr, retval;
 281
 282         addr = flash_map (info, 0, offset);
 283         retval = flash_read16 (addr);
 284         flash_unmap (info, 0, offset, addr);
 285         return retval;
 286 }
 287
 288
 289 /*-----------------------------------------------------------------------
 290  * read a long word by picking the least significant byte of each maximum
 291  * port size word. Swap for ppc format.
 292  */
 293 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
 294                               uint offset)
 295 {
 296         uchar *addr;
 297         ulong retval;
 298
 299 #ifdef DEBUG
 300         int x;
 301 #endif
 302         addr = flash_map (info, sect, offset);
 303
 304 #ifdef DEBUG
 305         debug ("long addr is at %p info->portwidth = %d\n", addr,
 306                info->portwidth);
 307         for (x = 0; x < 4 * info->portwidth; x++) {
 308                 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
 309         }
 310 #endif
 311 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 312         retval = ((flash_read8(addr) << 16) |
 313                   (flash_read8(addr + info->portwidth) << 24) |
 314                   (flash_read8(addr + 2 * info->portwidth)) |
 315                   (flash_read8(addr + 3 * info->portwidth) << 8));
 316 #else
 317         retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
 318                   (flash_read8(addr + info->portwidth - 1) << 16) |
 319                   (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
 320                   (flash_read8(addr + 3 * info->portwidth - 1)));
 321 #endif
 322         flash_unmap(info, sect, offset, addr);
 323
 324         return retval;
 325 }
 326
 327 /*
 328  * Write a proper sized command to the correct address
 329  */
 330 void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
 331                       uint offset, u32 cmd)
 332 {
 333
 334         void *addr;
 335         cfiword_t cword;
 336
 337         addr = flash_map (info, sect, offset);
 338         flash_make_cmd (info, cmd, &cword);
 339         switch (info->portwidth) {
 340         case FLASH_CFI_8BIT:
 341                 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
 342                        cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 343                 flash_write8(cword.c, addr);
 344                 break;
 345         case FLASH_CFI_16BIT:
 346                 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
 347                        cmd, cword.w,
 348                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 349                 flash_write16(cword.w, addr);
 350                 break;
 351         case FLASH_CFI_32BIT:
 352                 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
 353                        cmd, cword.l,
 354                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 355                 flash_write32(cword.l, addr);
 356                 break;
 357         case FLASH_CFI_64BIT:
 358 #ifdef DEBUG
 359                 {
 360                         char str[20];
 361
 362                         print_longlong (str, cword.ll);
 363
 364                         debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 365                                addr, cmd, str,
 366                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 367                 }
 368 #endif
 369                 flash_write64(cword.ll, addr);
 370                 break;
 371         }
 372
 373         /* Ensure all the instructions are fully finished */
 374         sync();
 375
 376         flash_unmap(info, sect, offset, addr);
 377 }
 378
 379 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
 380 {
 381         flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
 382         flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
 383 }
 384
 385 /*-----------------------------------------------------------------------
 386  */
 387 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
 388                           uint offset, uchar cmd)
 389 {
 390         void *addr;
 391         cfiword_t cword;
 392         int retval;
 393
 394         addr = flash_map (info, sect, offset);
 395         flash_make_cmd (info, cmd, &cword);
 396
 397         debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
 398         switch (info->portwidth) {
 399         case FLASH_CFI_8BIT:
 400                 debug ("is= %x %x\n", flash_read8(addr), cword.c);
 401                 retval = (flash_read8(addr) == cword.c);
 402                 break;
 403         case FLASH_CFI_16BIT:
 404                 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
 405                 retval = (flash_read16(addr) == cword.w);
 406                 break;
 407         case FLASH_CFI_32BIT:
 408                 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
 409                 retval = (flash_read32(addr) == cword.l);
 410                 break;
 411         case FLASH_CFI_64BIT:
 412 #ifdef DEBUG
 413                 {
 414                         char str1[20];
 415                         char str2[20];
 416
 417                         print_longlong (str1, flash_read64(addr));
 418                         print_longlong (str2, cword.ll);
 419                         debug ("is= %s %s\n", str1, str2);
 420                 }
 421 #endif
 422                 retval = (flash_read64(addr) == cword.ll);
 423                 break;
 424         default:
 425                 retval = 0;
 426                 break;
 427         }
 428         flash_unmap(info, sect, offset, addr);
 429
 430         return retval;
 431 }
 432
 433 /*-----------------------------------------------------------------------
 434  */
 435 static int flash_isset (flash_info_t * info, flash_sect_t sect,
 436                         uint offset, uchar cmd)
 437 {
 438         void *addr;
 439         cfiword_t cword;
 440         int retval;
 441
 442         addr = flash_map (info, sect, offset);
 443         flash_make_cmd (info, cmd, &cword);
 444         switch (info->portwidth) {
 445         case FLASH_CFI_8BIT:
 446                 retval = ((flash_read8(addr) & cword.c) == cword.c);
 447                 break;
 448         case FLASH_CFI_16BIT:
 449                 retval = ((flash_read16(addr) & cword.w) == cword.w);
 450                 break;
 451         case FLASH_CFI_32BIT:
 452                 retval = ((flash_read32(addr) & cword.l) == cword.l);
 453                 break;
 454         case FLASH_CFI_64BIT:
 455                 retval = ((flash_read64(addr) & cword.ll) == cword.ll);
 456                 break;
 457         default:
 458                 retval = 0;
 459                 break;
 460         }
 461         flash_unmap(info, sect, offset, addr);
 462
 463         return retval;
 464 }
 465
 466 /*-----------------------------------------------------------------------
 467  */
 468 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
 469                          uint offset, uchar cmd)
 470 {
 471         void *addr;
 472         cfiword_t cword;
 473         int retval;
 474
 475         addr = flash_map (info, sect, offset);
 476         flash_make_cmd (info, cmd, &cword);
 477         switch (info->portwidth) {
 478         case FLASH_CFI_8BIT:
 479                 retval = flash_read8(addr) != flash_read8(addr);
 480                 break;
 481         case FLASH_CFI_16BIT:
 482                 retval = flash_read16(addr) != flash_read16(addr);
 483                 break;
 484         case FLASH_CFI_32BIT:
 485                 retval = flash_read32(addr) != flash_read32(addr);
 486                 break;
 487         case FLASH_CFI_64BIT:
 488                 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
 489                            (flash_read32(addr+4) != flash_read32(addr+4)) );
 490                 break;
 491         default:
 492                 retval = 0;
 493                 break;
 494         }
 495         flash_unmap(info, sect, offset, addr);
 496
 497         return retval;
 498 }
 499
 500 /*
 501  * flash_is_busy - check to see if the flash is busy
 502  *
 503  * This routine checks the status of the chip and returns true if the
 504  * chip is busy.
 505  */
 506 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
 507 {
 508         int retval;
 509
 510         switch (info->vendor) {
 511         case CFI_CMDSET_INTEL_PROG_REGIONS:
 512         case CFI_CMDSET_INTEL_STANDARD:
 513         case CFI_CMDSET_INTEL_EXTENDED:
 514                 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
 515                 break;
 516         case CFI_CMDSET_AMD_STANDARD:
 517         case CFI_CMDSET_AMD_EXTENDED:
 518 #ifdef CONFIG_FLASH_CFI_LEGACY
 519         case CFI_CMDSET_AMD_LEGACY:
 520 #endif
 521                 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
 522                 break;
 523         default:
 524                 retval = 0;
 525         }
 526         debug ("flash_is_busy: %d\n", retval);
 527         return retval;
 528 }
 529
 530 /*-----------------------------------------------------------------------
 531  *  wait for XSR.7 to be set. Time out with an error if it does not.
 532  *  This routine does not set the flash to read-array mode.
 533  */
 534 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 535                                ulong tout, char *prompt)
 536 {
 537         ulong start;
 538
 539 #if CONFIG_SYS_HZ != 1000
 540         if ((ulong)CONFIG_SYS_HZ > 100000)
 541                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 542         else
 543                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 544 #endif
 545
 546         /* Wait for command completion */
 547         reset_timer();
 548         start = get_timer (0);
 549         while (flash_is_busy (info, sector)) {
 550                 if (get_timer (start) > tout) {
 551                         printf ("Flash %s timeout at address %lx data %lx\n",
 552                                 prompt, info->start[sector],
 553                                 flash_read_long (info, sector, 0));
 554                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 555                         return ERR_TIMOUT;
 556                 }
 557                 udelay (1);             /* also triggers watchdog */
 558         }
 559         return ERR_OK;
 560 }
 561
 562 /*-----------------------------------------------------------------------
 563  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 564  * do a full status check.
 565  *
 566  * This routine sets the flash to read-array mode.
 567  */
 568 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 569                                     ulong tout, char *prompt)
 570 {
 571         int retcode;
 572
 573         retcode = flash_status_check (info, sector, tout, prompt);
 574         switch (info->vendor) {
 575         case CFI_CMDSET_INTEL_PROG_REGIONS:
 576         case CFI_CMDSET_INTEL_EXTENDED:
 577         case CFI_CMDSET_INTEL_STANDARD:
 578                 if ((retcode != ERR_OK)
 579                     && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 580                         retcode = ERR_INVAL;
 581                         printf ("Flash %s error at address %lx\n", prompt,
 582                                 info->start[sector]);
 583                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
 584                                          FLASH_STATUS_PSLBS)) {
 585                                 puts ("Command Sequence Error.\n");
 586                         } else if (flash_isset (info, sector, 0,
 587                                                 FLASH_STATUS_ECLBS)) {
 588                                 puts ("Block Erase Error.\n");
 589                                 retcode = ERR_NOT_ERASED;
 590                         } else if (flash_isset (info, sector, 0,
 591                                                 FLASH_STATUS_PSLBS)) {
 592                                 puts ("Locking Error\n");
 593                         }
 594                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 595                                 puts ("Block locked.\n");
 596                                 retcode = ERR_PROTECTED;
 597                         }
 598                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 599                                 puts ("Vpp Low Error.\n");
 600                 }
 601                 flash_write_cmd (info, sector, 0, info->cmd_reset);
 602                 break;
 603         default:
 604                 break;
 605         }
 606         return retcode;
 607 }
 608
 609 static int use_flash_status_poll(flash_info_t *info)
 610 {
 611 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 612         if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
 613             info->vendor == CFI_CMDSET_AMD_STANDARD)
 614                 return 1;
 615 #endif
 616         return 0;
 617 }
 618
 619 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 620                              ulong tout, char *prompt)
 621 {
 622 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 623         ulong start;
 624         int ready;
 625
 626 #if CONFIG_SYS_HZ != 1000
 627         if ((ulong)CONFIG_SYS_HZ > 100000)
 628                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 629         else
 630                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 631 #endif
 632
 633         /* Wait for command completion */
 634         reset_timer();
 635         start = get_timer(0);
 636         while (1) {
 637                 switch (info->portwidth) {
 638                 case FLASH_CFI_8BIT:
 639                         ready = flash_read8(dst) == flash_read8(src);
 640                         break;
 641                 case FLASH_CFI_16BIT:
 642                         ready = flash_read16(dst) == flash_read16(src);
 643                         break;
 644                 case FLASH_CFI_32BIT:
 645                         ready = flash_read32(dst) == flash_read32(src);
 646                         break;
 647                 case FLASH_CFI_64BIT:
 648                         ready = flash_read64(dst) == flash_read64(src);
 649                         break;
 650                 default:
 651                         ready = 0;
 652                         break;
 653                 }
 654                 if (ready)
 655                         break;
 656                 if (get_timer(start) > tout) {
 657                         printf("Flash %s timeout at address %lx data %lx\n",
 658                                prompt, (ulong)dst, (ulong)flash_read8(dst));
 659                         return ERR_TIMOUT;
 660                 }
 661                 udelay(1);              /* also triggers watchdog */
 662         }
 663 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
 664         return ERR_OK;
 665 }
 666
 667 /*-----------------------------------------------------------------------
 668  */
 669 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 670 {
 671 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 672         unsigned short  w;
 673         unsigned int    l;
 674         unsigned long long ll;
 675 #endif
 676
 677         switch (info->portwidth) {
 678         case FLASH_CFI_8BIT:
 679                 cword->c = c;
 680                 break;
 681         case FLASH_CFI_16BIT:
 682 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 683                 w = c;
 684                 w <<= 8;
 685                 cword->w = (cword->w >> 8) | w;
 686 #else
 687                 cword->w = (cword->w << 8) | c;
 688 #endif
 689                 break;
 690         case FLASH_CFI_32BIT:
 691 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 692                 l = c;
 693                 l <<= 24;
 694                 cword->l = (cword->l >> 8) | l;
 695 #else
 696                 cword->l = (cword->l << 8) | c;
 697 #endif
 698                 break;
 699         case FLASH_CFI_64BIT:
 700 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 701                 ll = c;
 702                 ll <<= 56;
 703                 cword->ll = (cword->ll >> 8) | ll;
 704 #else
 705                 cword->ll = (cword->ll << 8) | c;
 706 #endif
 707                 break;
 708         }
 709 }
 710
 711 /*
 712  * Loop through the sector table starting from the previously found sector.
 713  * Searches forwards or backwards, dependent on the passed address.
 714  */
 715 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
 716 {
 717         static flash_sect_t saved_sector = 0; /* previously found sector */
 718         flash_sect_t sector = saved_sector;
 719
 720         while ((info->start[sector] < addr)
 721                         && (sector < info->sector_count - 1))
 722                 sector++;
 723         while ((info->start[sector] > addr) && (sector > 0))
 724                 /*
 725                  * also decrements the sector in case of an overshot
 726                  * in the first loop
 727                  */
 728                 sector--;
 729
 730         saved_sector = sector;
 731         return sector;
 732 }
 733
 734 /*-----------------------------------------------------------------------
 735  */
 736 static int flash_write_cfiword (flash_info_t * info, ulong dest,
 737                                 cfiword_t cword)
 738 {
 739         void *dstaddr = (void *)dest;
 740         int flag;
 741         flash_sect_t sect = 0;
 742         char sect_found = 0;
 743
 744         /* Check if Flash is (sufficiently) erased */
 745         switch (info->portwidth) {
 746         case FLASH_CFI_8BIT:
 747                 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
 748                 break;
 749         case FLASH_CFI_16BIT:
 750                 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
 751                 break;
 752         case FLASH_CFI_32BIT:
 753                 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
 754                 break;
 755         case FLASH_CFI_64BIT:
 756                 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
 757                 break;
 758         default:
 759                 flag = 0;
 760                 break;
 761         }
 762         if (!flag)
 763                 return ERR_NOT_ERASED;
 764
 765         /* Disable interrupts which might cause a timeout here */
 766         flag = disable_interrupts ();
 767
 768         switch (info->vendor) {
 769         case CFI_CMDSET_INTEL_PROG_REGIONS:
 770         case CFI_CMDSET_INTEL_EXTENDED:
 771         case CFI_CMDSET_INTEL_STANDARD:
 772                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 773                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
 774                 break;
 775         case CFI_CMDSET_AMD_EXTENDED:
 776         case CFI_CMDSET_AMD_STANDARD:
 777                 sect = find_sector(info, dest);
 778                 flash_unlock_seq (info, sect);
 779                 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 780                 sect_found = 1;
 781                 break;
 782 #ifdef CONFIG_FLASH_CFI_LEGACY
 783         case CFI_CMDSET_AMD_LEGACY:
 784                 sect = find_sector(info, dest);
 785                 flash_unlock_seq (info, 0);
 786                 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 787                 sect_found = 1;
 788                 break;
 789 #endif
 790         }
 791
 792         switch (info->portwidth) {
 793         case FLASH_CFI_8BIT:
 794                 flash_write8(cword.c, dstaddr);
 795                 break;
 796         case FLASH_CFI_16BIT:
 797                 flash_write16(cword.w, dstaddr);
 798                 break;
 799         case FLASH_CFI_32BIT:
 800                 flash_write32(cword.l, dstaddr);
 801                 break;
 802         case FLASH_CFI_64BIT:
 803                 flash_write64(cword.ll, dstaddr);
 804                 break;
 805         }
 806
 807         /* re-enable interrupts if necessary */
 808         if (flag)
 809                 enable_interrupts ();
 810
 811         if (!sect_found)
 812                 sect = find_sector (info, dest);
 813
 814         if (use_flash_status_poll(info))
 815                 return flash_status_poll(info, &cword, dstaddr,
 816                                          info->write_tout, "write");
 817         else
 818                 return flash_full_status_check(info, sect,
 819                                                info->write_tout, "write");
 820 }
 821
 822 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 823
 824 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 825                                   int len)
 826 {
 827         flash_sect_t sector;
 828         int cnt;
 829         int retcode;
 830         void *src = cp;
 831         void *dst = (void *)dest;
 832         void *dst2 = dst;
 833         int flag = 0;
 834         uint offset = 0;
 835         unsigned int shift;
 836         uchar write_cmd;
 837
 838         switch (info->portwidth) {
 839         case FLASH_CFI_8BIT:
 840                 shift = 0;
 841                 break;
 842         case FLASH_CFI_16BIT:
 843                 shift = 1;
 844                 break;
 845         case FLASH_CFI_32BIT:
 846                 shift = 2;
 847                 break;
 848         case FLASH_CFI_64BIT:
 849                 shift = 3;
 850                 break;
 851         default:
 852                 retcode = ERR_INVAL;
 853                 goto out_unmap;
 854         }
 855
 856         cnt = len >> shift;
 857
 858         while ((cnt-- > 0) && (flag == 0)) {
 859                 switch (info->portwidth) {
 860                 case FLASH_CFI_8BIT:
 861                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 862                                 flash_read8(src));
 863                         src += 1, dst2 += 1;
 864                         break;
 865                 case FLASH_CFI_16BIT:
 866                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 867                                 flash_read16(src));
 868                         src += 2, dst2 += 2;
 869                         break;
 870                 case FLASH_CFI_32BIT:
 871                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 872                                 flash_read32(src));
 873                         src += 4, dst2 += 4;
 874                         break;
 875                 case FLASH_CFI_64BIT:
 876                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 877                                 flash_read64(src));
 878                         src += 8, dst2 += 8;
 879                         break;
 880                 }
 881         }
 882         if (!flag) {
 883                 retcode = ERR_NOT_ERASED;
 884                 goto out_unmap;
 885         }
 886
 887         src = cp;
 888         sector = find_sector (info, dest);
 889
 890         switch (info->vendor) {
 891         case CFI_CMDSET_INTEL_PROG_REGIONS:
 892         case CFI_CMDSET_INTEL_STANDARD:
 893         case CFI_CMDSET_INTEL_EXTENDED:
 894                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 895                                         FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
 896                 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 897                 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
 898                 flash_write_cmd (info, sector, 0, write_cmd);
 899                 retcode = flash_status_check (info, sector,
 900                                               info->buffer_write_tout,
 901                                               "write to buffer");
 902                 if (retcode == ERR_OK) {
 903                         /* reduce the number of loops by the width of
 904                          * the port */
 905                         cnt = len >> shift;
 906                         flash_write_cmd (info, sector, 0, cnt - 1);
 907                         while (cnt-- > 0) {
 908                                 switch (info->portwidth) {
 909                                 case FLASH_CFI_8BIT:
 910                                         flash_write8(flash_read8(src), dst);
 911                                         src += 1, dst += 1;
 912                                         break;
 913                                 case FLASH_CFI_16BIT:
 914                                         flash_write16(flash_read16(src), dst);
 915                                         src += 2, dst += 2;
 916                                         break;
 917                                 case FLASH_CFI_32BIT:
 918                                         flash_write32(flash_read32(src), dst);
 919                                         src += 4, dst += 4;
 920                                         break;
 921                                 case FLASH_CFI_64BIT:
 922                                         flash_write64(flash_read64(src), dst);
 923                                         src += 8, dst += 8;
 924                                         break;
 925                                 default:
 926                                         retcode = ERR_INVAL;
 927                                         goto out_unmap;
 928                                 }
 929                         }
 930                         flash_write_cmd (info, sector, 0,
 931                                          FLASH_CMD_WRITE_BUFFER_CONFIRM);
 932                         retcode = flash_full_status_check (
 933                                 info, sector, info->buffer_write_tout,
 934                                 "buffer write");
 935                 }
 936
 937                 break;
 938
 939         case CFI_CMDSET_AMD_STANDARD:
 940         case CFI_CMDSET_AMD_EXTENDED:
 941                 flash_unlock_seq(info,0);
 942
 943 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 944                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 945 #endif
 946                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
 947                 cnt = len >> shift;
 948                 flash_write_cmd(info, sector, offset, cnt - 1);
 949
 950                 switch (info->portwidth) {
 951                 case FLASH_CFI_8BIT:
 952                         while (cnt-- > 0) {
 953                                 flash_write8(flash_read8(src), dst);
 954                                 src += 1, dst += 1;
 955                         }
 956                         break;
 957                 case FLASH_CFI_16BIT:
 958                         while (cnt-- > 0) {
 959                                 flash_write16(flash_read16(src), dst);
 960                                 src += 2, dst += 2;
 961                         }
 962                         break;
 963                 case FLASH_CFI_32BIT:
 964                         while (cnt-- > 0) {
 965                                 flash_write32(flash_read32(src), dst);
 966                                 src += 4, dst += 4;
 967                         }
 968                         break;
 969                 case FLASH_CFI_64BIT:
 970                         while (cnt-- > 0) {
 971                                 flash_write64(flash_read64(src), dst);
 972                                 src += 8, dst += 8;
 973                         }
 974                         break;
 975                 default:
 976                         retcode = ERR_INVAL;
 977                         goto out_unmap;
 978                 }
 979
 980                 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
 981                 if (use_flash_status_poll(info))
 982                         retcode = flash_status_poll(info, src - (1 << shift),
 983                                                     dst - (1 << shift),
 984                                                     info->buffer_write_tout,
 985                                                     "buffer write");
 986                 else
 987                         retcode = flash_full_status_check(info, sector,
 988                                                           info->buffer_write_tout,
 989                                                           "buffer write");
 990                 break;
 991
 992         default:
 993                 debug ("Unknown Command Set\n");
 994                 retcode = ERR_INVAL;
 995                 break;
 996         }
 997
 998 out_unmap:
 999         return retcode;
1000 }
1001 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1002
1003
1004 /*-----------------------------------------------------------------------
1005  */
1006 int flash_erase (flash_info_t * info, int s_first, int s_last)
1007 {
1008         int rcode = 0;
1009         int prot;
1010         flash_sect_t sect;
1011         int st;
1012
1013         if (info->flash_id != FLASH_MAN_CFI) {
1014                 puts ("Can't erase unknown flash type - aborted\n");
1015                 return 1;
1016         }
1017         if ((s_first < 0) || (s_first > s_last)) {
1018                 puts ("- no sectors to erase\n");
1019                 return 1;
1020         }
1021
1022         prot = 0;
1023         for (sect = s_first; sect <= s_last; ++sect) {
1024                 if (info->protect[sect]) {
1025                         prot++;
1026                 }
1027         }
1028         if (prot) {
1029                 printf ("- Warning: %d protected sectors will not be erased!\n",
1030                         prot);
1031         } else if (flash_verbose) {
1032                 putc ('\n');
1033         }
1034
1035
1036         for (sect = s_first; sect <= s_last; sect++) {
1037                 if (info->protect[sect] == 0) { /* not protected */
1038                         switch (info->vendor) {
1039                         case CFI_CMDSET_INTEL_PROG_REGIONS:
1040                         case CFI_CMDSET_INTEL_STANDARD:
1041                         case CFI_CMDSET_INTEL_EXTENDED:
1042                                 flash_write_cmd (info, sect, 0,
1043                                                  FLASH_CMD_CLEAR_STATUS);
1044                                 flash_write_cmd (info, sect, 0,
1045                                                  FLASH_CMD_BLOCK_ERASE);
1046                                 flash_write_cmd (info, sect, 0,
1047                                                  FLASH_CMD_ERASE_CONFIRM);
1048                                 break;
1049                         case CFI_CMDSET_AMD_STANDARD:
1050                         case CFI_CMDSET_AMD_EXTENDED:
1051                                 flash_unlock_seq (info, sect);
1052                                 flash_write_cmd (info, sect,
1053                                                 info->addr_unlock1,
1054                                                 AMD_CMD_ERASE_START);
1055                                 flash_unlock_seq (info, sect);
1056                                 flash_write_cmd (info, sect, 0,
1057                                                  AMD_CMD_ERASE_SECTOR);
1058                                 break;
1059 #ifdef CONFIG_FLASH_CFI_LEGACY
1060                         case CFI_CMDSET_AMD_LEGACY:
1061                                 flash_unlock_seq (info, 0);
1062                                 flash_write_cmd (info, 0, info->addr_unlock1,
1063                                                 AMD_CMD_ERASE_START);
1064                                 flash_unlock_seq (info, 0);
1065                                 flash_write_cmd (info, sect, 0,
1066                                                 AMD_CMD_ERASE_SECTOR);
1067                                 break;
1068 #endif
1069                         default:
1070                                 debug ("Unkown flash vendor %d\n",
1071                                        info->vendor);
1072                                 break;
1073                         }
1074
1075                         if (use_flash_status_poll(info)) {
1076                                 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL;
1077                                 void *dest;
1078                                 dest = flash_map(info, sect, 0);
1079                                 st = flash_status_poll(info, &cword, dest,
1080                                                        info->erase_blk_tout, "erase");
1081                                 flash_unmap(info, sect, 0, dest);
1082                         } else
1083                                 st = flash_full_status_check(info, sect,
1084                                                              info->erase_blk_tout,
1085                                                              "erase");
1086                         if (st)
1087                                 rcode = 1;
1088                         else if (flash_verbose)
1089                                 putc ('.');
1090                 }
1091         }
1092
1093         if (flash_verbose)
1094                 puts (" done\n");
1095
1096         return rcode;
1097 }
1098
1099 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1100 static int sector_erased(flash_info_t *info, int i)
1101 {
1102         int k;
1103         int size;
1104         volatile unsigned long *flash;
1105
1106         /*
1107          * Check if whole sector is erased
1108          */
1109         size = flash_sector_size(info, i);
1110         flash = (volatile unsigned long *) info->start[i];
1111         /* divide by 4 for longword access */
1112         size = size >> 2;
1113
1114         for (k = 0; k < size; k++) {
1115                 if (*flash++ != 0xffffffff)
1116                         return 0;       /* not erased */
1117         }
1118
1119         return 1;                       /* erased */
1120 }
1121 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1122
1123 void flash_print_info (flash_info_t * info)
1124 {
1125         int i;
1126
1127         if (info->flash_id != FLASH_MAN_CFI) {
1128                 puts ("missing or unknown FLASH type\n");
1129                 return;
1130         }
1131
1132         printf ("%s FLASH (%d x %d)",
1133                 info->name,
1134                 (info->portwidth << 3), (info->chipwidth << 3));
1135         if (info->size < 1024*1024)
1136                 printf ("  Size: %ld kB in %d Sectors\n",
1137                         info->size >> 10, info->sector_count);
1138         else
1139                 printf ("  Size: %ld MB in %d Sectors\n",
1140                         info->size >> 20, info->sector_count);
1141         printf ("  ");
1142         switch (info->vendor) {
1143                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1144                         printf ("Intel Prog Regions");
1145                         break;
1146                 case CFI_CMDSET_INTEL_STANDARD:
1147                         printf ("Intel Standard");
1148                         break;
1149                 case CFI_CMDSET_INTEL_EXTENDED:
1150                         printf ("Intel Extended");
1151                         break;
1152                 case CFI_CMDSET_AMD_STANDARD:
1153                         printf ("AMD Standard");
1154                         break;
1155                 case CFI_CMDSET_AMD_EXTENDED:
1156                         printf ("AMD Extended");
1157                         break;
1158 #ifdef CONFIG_FLASH_CFI_LEGACY
1159                 case CFI_CMDSET_AMD_LEGACY:
1160                         printf ("AMD Legacy");
1161                         break;
1162 #endif
1163                 default:
1164                         printf ("Unknown (%d)", info->vendor);
1165                         break;
1166         }
1167         printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1168                 info->manufacturer_id);
1169         printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1170                 info->device_id);
1171         if (info->device_id == 0x7E) {
1172                 printf("%04X", info->device_id2);
1173         }
1174         printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1175                 info->erase_blk_tout,
1176                 info->write_tout);
1177         if (info->buffer_size > 1) {
1178                 printf ("  Buffer write timeout: %ld ms, "
1179                         "buffer size: %d bytes\n",
1180                 info->buffer_write_tout,
1181                 info->buffer_size);
1182         }
1183
1184         puts ("\n  Sector Start Addresses:");
1185         for (i = 0; i < info->sector_count; ++i) {
1186                 if (ctrlc())
1187                         break;
1188                 if ((i % 5) == 0)
1189                         putc('\n');
1190 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1191                 /* print empty and read-only info */
1192                 printf ("  %08lX %c %s ",
1193                         info->start[i],
1194                         sector_erased(info, i) ? 'E' : ' ',
1195                         info->protect[i] ? "RO" : "  ");
1196 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1197                 printf ("  %08lX   %s ",
1198                         info->start[i],
1199                         info->protect[i] ? "RO" : "  ");
1200 #endif
1201         }
1202         putc ('\n');
1203         return;
1204 }
1205
1206 /*-----------------------------------------------------------------------
1207  * This is used in a few places in write_buf() to show programming
1208  * progress.  Making it a function is nasty because it needs to do side
1209  * effect updates to digit and dots.  Repeated code is nasty too, so
1210  * we define it once here.
1211  */
1212 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1213 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1214         if (flash_verbose) { \
1215                 dots -= dots_sub; \
1216                 if ((scale > 0) && (dots <= 0)) { \
1217                         if ((digit % 5) == 0) \
1218                                 printf ("%d", digit / 5); \
1219                         else \
1220                                 putc ('.'); \
1221                         digit--; \
1222                         dots += scale; \
1223                 } \
1224         }
1225 #else
1226 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1227 #endif
1228
1229 /*-----------------------------------------------------------------------
1230  * Copy memory to flash, returns:
1231  * 0 - OK
1232  * 1 - write timeout
1233  * 2 - Flash not erased
1234  */
1235 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1236 {
1237         ulong wp;
1238         uchar *p;
1239         int aln;
1240         cfiword_t cword;
1241         int i, rc;
1242 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1243         int buffered_size;
1244 #endif
1245 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1246         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1247         int scale = 0;
1248         int dots  = 0;
1249
1250         /*
1251          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1252          */
1253         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1254                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1255                         CONFIG_FLASH_SHOW_PROGRESS);
1256         }
1257 #endif
1258
1259         /* get lower aligned address */
1260         wp = (addr & ~(info->portwidth - 1));
1261
1262         /* handle unaligned start */
1263         if ((aln = addr - wp) != 0) {
1264                 cword.l = 0;
1265                 p = (uchar *)wp;
1266                 for (i = 0; i < aln; ++i)
1267                         flash_add_byte (info, &cword, flash_read8(p + i));
1268
1269                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1270                         flash_add_byte (info, &cword, *src++);
1271                         cnt--;
1272                 }
1273                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1274                         flash_add_byte (info, &cword, flash_read8(p + i));
1275
1276                 rc = flash_write_cfiword (info, wp, cword);
1277                 if (rc != 0)
1278                         return rc;
1279
1280                 wp += i;
1281                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1282         }
1283
1284         /* handle the aligned part */
1285 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1286         buffered_size = (info->portwidth / info->chipwidth);
1287         buffered_size *= info->buffer_size;
1288         while (cnt >= info->portwidth) {
1289                 /* prohibit buffer write when buffer_size is 1 */
1290                 if (info->buffer_size == 1) {
1291                         cword.l = 0;
1292                         for (i = 0; i < info->portwidth; i++)
1293                                 flash_add_byte (info, &cword, *src++);
1294                         if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1295                                 return rc;
1296                         wp += info->portwidth;
1297                         cnt -= info->portwidth;
1298                         continue;
1299                 }
1300
1301                 /* write buffer until next buffered_size aligned boundary */
1302                 i = buffered_size - (wp % buffered_size);
1303                 if (i > cnt)
1304                         i = cnt;
1305                 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1306                         return rc;
1307                 i -= i & (info->portwidth - 1);
1308                 wp += i;
1309                 src += i;
1310                 cnt -= i;
1311                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1312         }
1313 #else
1314         while (cnt >= info->portwidth) {
1315                 cword.l = 0;
1316                 for (i = 0; i < info->portwidth; i++) {
1317                         flash_add_byte (info, &cword, *src++);
1318                 }
1319                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1320                         return rc;
1321                 wp += info->portwidth;
1322                 cnt -= info->portwidth;
1323                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1324         }
1325 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1326
1327         if (cnt == 0) {
1328                 return (0);
1329         }
1330
1331         /*
1332          * handle unaligned tail bytes
1333          */
1334         cword.l = 0;
1335         p = (uchar *)wp;
1336         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1337                 flash_add_byte (info, &cword, *src++);
1338                 --cnt;
1339         }
1340         for (; i < info->portwidth; ++i)
1341                 flash_add_byte (info, &cword, flash_read8(p + i));
1342
1343         return flash_write_cfiword (info, wp, cword);
1344 }
1345
1346 /*-----------------------------------------------------------------------
1347  */
1348 #ifdef CONFIG_SYS_FLASH_PROTECTION
1349
1350 int flash_real_protect (flash_info_t * info, long sector, int prot)
1351 {
1352         int retcode = 0;
1353
1354         switch (info->vendor) {
1355                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1356                 case CFI_CMDSET_INTEL_STANDARD:
1357                 case CFI_CMDSET_INTEL_EXTENDED:
1358                         /*
1359                          * see errata called
1360                          * "Numonyx Axcell P33/P30 Specification Update" :)
1361                          */
1362                         flash_write_cmd (info, sector, 0, FLASH_CMD_READ_ID);
1363                         if (!flash_isequal (info, sector, FLASH_OFFSET_PROTECT,
1364                                             prot)) {
1365                                 /*
1366                                  * cmd must come before FLASH_CMD_PROTECT + 20us
1367                                  * Disable interrupts which might cause a timeout here.
1368                                  */
1369                                 int flag = disable_interrupts ();
1370                                 unsigned short cmd;
1371
1372                                 if (prot)
1373                                         cmd = FLASH_CMD_PROTECT_SET;
1374                                 else
1375                                         cmd = FLASH_CMD_PROTECT_CLEAR;
1376
1377                                 flash_write_cmd (info, sector, 0,
1378                                                   FLASH_CMD_PROTECT);
1379                                 flash_write_cmd (info, sector, 0, cmd);
1380                                 /* re-enable interrupts if necessary */
1381                                 if (flag)
1382                                         enable_interrupts ();
1383                         }
1384                         break;
1385                 case CFI_CMDSET_AMD_EXTENDED:
1386                 case CFI_CMDSET_AMD_STANDARD:
1387                         /* U-Boot only checks the first byte */
1388                         if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1389                                 if (prot) {
1390                                         flash_unlock_seq (info, 0);
1391                                         flash_write_cmd (info, 0,
1392                                                         info->addr_unlock1,
1393                                                         ATM_CMD_SOFTLOCK_START);
1394                                         flash_unlock_seq (info, 0);
1395                                         flash_write_cmd (info, sector, 0,
1396                                                         ATM_CMD_LOCK_SECT);
1397                                 } else {
1398                                         flash_write_cmd (info, 0,
1399                                                         info->addr_unlock1,
1400                                                         AMD_CMD_UNLOCK_START);
1401                                         if (info->device_id == ATM_ID_BV6416)
1402                                                 flash_write_cmd (info, sector,
1403                                                         0, ATM_CMD_UNLOCK_SECT);
1404                                 }
1405                         }
1406                         break;
1407 #ifdef CONFIG_FLASH_CFI_LEGACY
1408                 case CFI_CMDSET_AMD_LEGACY:
1409                         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1410                         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1411                         if (prot)
1412                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1413                         else
1414                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1415 #endif
1416         };
1417
1418         if ((retcode =
1419              flash_full_status_check (info, sector, info->erase_blk_tout,
1420                                       prot ? "protect" : "unprotect")) == 0) {
1421
1422                 info->protect[sector] = prot;
1423
1424                 /*
1425                  * On some of Intel's flash chips (marked via legacy_unlock)
1426                  * unprotect unprotects all locking.
1427                  */
1428                 if ((prot == 0) && (info->legacy_unlock)) {
1429                         flash_sect_t i;
1430
1431                         for (i = 0; i < info->sector_count; i++) {
1432                                 if (info->protect[i])
1433                                         flash_real_protect (info, i, 1);
1434                         }
1435                 }
1436         }
1437         return retcode;
1438 }
1439
1440 /*-----------------------------------------------------------------------
1441  * flash_read_user_serial - read the OneTimeProgramming cells
1442  */
1443 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1444                              int len)
1445 {
1446         uchar *src;
1447         uchar *dst;
1448
1449         dst = buffer;
1450         src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1451         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1452         memcpy (dst, src + offset, len);
1453         flash_write_cmd (info, 0, 0, info->cmd_reset);
1454         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1455 }
1456
1457 /*
1458  * flash_read_factory_serial - read the device Id from the protection area
1459  */
1460 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1461                                 int len)
1462 {
1463         uchar *src;
1464
1465         src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1466         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1467         memcpy (buffer, src + offset, len);
1468         flash_write_cmd (info, 0, 0, info->cmd_reset);
1469         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1470 }
1471
1472 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1473
1474 /*-----------------------------------------------------------------------
1475  * Reverse the order of the erase regions in the CFI QRY structure.
1476  * This is needed for chips that are either a) correctly detected as
1477  * top-boot, or b) buggy.
1478  */
1479 static void cfi_reverse_geometry(struct cfi_qry *qry)
1480 {
1481         unsigned int i, j;
1482         u32 tmp;
1483
1484         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1485                 tmp = qry->erase_region_info[i];
1486                 qry->erase_region_info[i] = qry->erase_region_info[j];
1487                 qry->erase_region_info[j] = tmp;
1488         }
1489 }
1490
1491 /*-----------------------------------------------------------------------
1492  * read jedec ids from device and set corresponding fields in info struct
1493  *
1494  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1495  *
1496  */
1497 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1498 {
1499         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1500         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1501         udelay(1000); /* some flash are slow to respond */
1502         info->manufacturer_id = flash_read_uchar (info,
1503                                         FLASH_OFFSET_MANUFACTURER_ID);
1504         info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1505                         flash_read_word (info, FLASH_OFFSET_DEVICE_ID) :
1506                         flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID);
1507         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1508 }
1509
1510 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1511 {
1512         info->cmd_reset = FLASH_CMD_RESET;
1513
1514         cmdset_intel_read_jedec_ids(info);
1515         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1516
1517 #ifdef CONFIG_SYS_FLASH_PROTECTION
1518         /* read legacy lock/unlock bit from intel flash */
1519         if (info->ext_addr) {
1520                 info->legacy_unlock = flash_read_uchar (info,
1521                                 info->ext_addr + 5) & 0x08;
1522         }
1523 #endif
1524
1525         return 0;
1526 }
1527
1528 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1529 {
1530         ushort bankId = 0;
1531         uchar  manuId;
1532
1533         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1534         flash_unlock_seq(info, 0);
1535         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1536         udelay(1000); /* some flash are slow to respond */
1537
1538         manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1539         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1540         while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1541                 bankId += 0x100;
1542                 manuId = flash_read_uchar (info,
1543                         bankId | FLASH_OFFSET_MANUFACTURER_ID);
1544         }
1545         info->manufacturer_id = manuId;
1546
1547         switch (info->chipwidth){
1548         case FLASH_CFI_8BIT:
1549                 info->device_id = flash_read_uchar (info,
1550                                                 FLASH_OFFSET_DEVICE_ID);
1551                 if (info->device_id == 0x7E) {
1552                         /* AMD 3-byte (expanded) device ids */
1553                         info->device_id2 = flash_read_uchar (info,
1554                                                 FLASH_OFFSET_DEVICE_ID2);
1555                         info->device_id2 <<= 8;
1556                         info->device_id2 |= flash_read_uchar (info,
1557                                                 FLASH_OFFSET_DEVICE_ID3);
1558                 }
1559                 break;
1560         case FLASH_CFI_16BIT:
1561                 info->device_id = flash_read_word (info,
1562                                                 FLASH_OFFSET_DEVICE_ID);
1563                 break;
1564         default:
1565                 break;
1566         }
1567         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1568 }
1569
1570 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1571 {
1572         info->cmd_reset = AMD_CMD_RESET;
1573
1574         cmdset_amd_read_jedec_ids(info);
1575         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1576
1577         return 0;
1578 }
1579
1580 #ifdef CONFIG_FLASH_CFI_LEGACY
1581 static void flash_read_jedec_ids (flash_info_t * info)
1582 {
1583         info->manufacturer_id = 0;
1584         info->device_id       = 0;
1585         info->device_id2      = 0;
1586
1587         switch (info->vendor) {
1588         case CFI_CMDSET_INTEL_PROG_REGIONS:
1589         case CFI_CMDSET_INTEL_STANDARD:
1590         case CFI_CMDSET_INTEL_EXTENDED:
1591                 cmdset_intel_read_jedec_ids(info);
1592                 break;
1593         case CFI_CMDSET_AMD_STANDARD:
1594         case CFI_CMDSET_AMD_EXTENDED:
1595                 cmdset_amd_read_jedec_ids(info);
1596                 break;
1597         default:
1598                 break;
1599         }
1600 }
1601
1602 /*-----------------------------------------------------------------------
1603  * Call board code to request info about non-CFI flash.
1604  * board_flash_get_legacy needs to fill in at least:
1605  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1606  */
1607 static int flash_detect_legacy(phys_addr_t base, int banknum)
1608 {
1609         flash_info_t *info = &flash_info[banknum];
1610
1611         if (board_flash_get_legacy(base, banknum, info)) {
1612                 /* board code may have filled info completely. If not, we
1613                    use JEDEC ID probing. */
1614                 if (!info->vendor) {
1615                         int modes[] = {
1616                                 CFI_CMDSET_AMD_STANDARD,
1617                                 CFI_CMDSET_INTEL_STANDARD
1618                         };
1619                         int i;
1620
1621                         for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1622                                 info->vendor = modes[i];
1623                                 info->start[0] =
1624                                         (ulong)map_physmem(base,
1625                                                            info->portwidth,
1626                                                            MAP_NOCACHE);
1627                                 if (info->portwidth == FLASH_CFI_8BIT
1628                                         && info->interface == FLASH_CFI_X8X16) {
1629                                         info->addr_unlock1 = 0x2AAA;
1630                                         info->addr_unlock2 = 0x5555;
1631                                 } else {
1632                                         info->addr_unlock1 = 0x5555;
1633                                         info->addr_unlock2 = 0x2AAA;
1634                                 }
1635                                 flash_read_jedec_ids(info);
1636                                 debug("JEDEC PROBE: ID %x %x %x\n",
1637                                                 info->manufacturer_id,
1638                                                 info->device_id,
1639                                                 info->device_id2);
1640                                 if (jedec_flash_match(info, info->start[0]))
1641                                         break;
1642                                 else
1643                                         unmap_physmem((void *)info->start[0],
1644                                                       MAP_NOCACHE);
1645                         }
1646                 }
1647
1648                 switch(info->vendor) {
1649                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1650                 case CFI_CMDSET_INTEL_STANDARD:
1651                 case CFI_CMDSET_INTEL_EXTENDED:
1652                         info->cmd_reset = FLASH_CMD_RESET;
1653                         break;
1654                 case CFI_CMDSET_AMD_STANDARD:
1655                 case CFI_CMDSET_AMD_EXTENDED:
1656                 case CFI_CMDSET_AMD_LEGACY:
1657                         info->cmd_reset = AMD_CMD_RESET;
1658                         break;
1659                 }
1660                 info->flash_id = FLASH_MAN_CFI;
1661                 return 1;
1662         }
1663         return 0; /* use CFI */
1664 }
1665 #else
1666 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1667 {
1668         return 0; /* use CFI */
1669 }
1670 #endif
1671
1672 /*-----------------------------------------------------------------------
1673  * detect if flash is compatible with the Common Flash Interface (CFI)
1674  * http://www.jedec.org/download/search/jesd68.pdf
1675  */
1676 static void flash_read_cfi (flash_info_t *info, void *buf,
1677                 unsigned int start, size_t len)
1678 {
1679         u8 *p = buf;
1680         unsigned int i;
1681
1682         for (i = 0; i < len; i++)
1683                 p[i] = flash_read_uchar(info, start + i);
1684 }
1685
1686 void __flash_cmd_reset(flash_info_t *info)
1687 {
1688         /*
1689          * We do not yet know what kind of commandset to use, so we issue
1690          * the reset command in both Intel and AMD variants, in the hope
1691          * that AMD flash roms ignore the Intel command.
1692          */
1693         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1694         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1695 }
1696 void flash_cmd_reset(flash_info_t *info)
1697         __attribute__((weak,alias("__flash_cmd_reset")));
1698
1699 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1700 {
1701         int cfi_offset;
1702
1703         /* Issue FLASH reset command */
1704         flash_cmd_reset(info);
1705
1706         for (cfi_offset=0;
1707              cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1708              cfi_offset++) {
1709                 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1710                                  FLASH_CMD_CFI);
1711                 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1712                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1713                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1714                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1715                                         sizeof(struct cfi_qry));
1716                         info->interface = le16_to_cpu(qry->interface_desc);
1717
1718                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1719                         debug ("device interface is %d\n",
1720                                info->interface);
1721                         debug ("found port %d chip %d ",
1722                                info->portwidth, info->chipwidth);
1723                         debug ("port %d bits chip %d bits\n",
1724                                info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1725                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1726
1727                         /* calculate command offsets as in the Linux driver */
1728                         info->addr_unlock1 = 0x555;
1729                         info->addr_unlock2 = 0x2aa;
1730
1731                         /*
1732                          * modify the unlock address if we are
1733                          * in compatibility mode
1734                          */
1735                         if (    /* x8/x16 in x8 mode */
1736                                 ((info->chipwidth == FLASH_CFI_BY8) &&
1737                                         (info->interface == FLASH_CFI_X8X16)) ||
1738                                 /* x16/x32 in x16 mode */
1739                                 ((info->chipwidth == FLASH_CFI_BY16) &&
1740                                         (info->interface == FLASH_CFI_X16X32)))
1741                         {
1742                                 info->addr_unlock1 = 0xaaa;
1743                                 info->addr_unlock2 = 0x555;
1744                         }
1745
1746                         info->name = "CFI conformant";
1747                         return 1;
1748                 }
1749         }
1750
1751         return 0;
1752 }
1753
1754 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1755 {
1756         debug ("flash detect cfi\n");
1757
1758         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1759              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1760                 for (info->chipwidth = FLASH_CFI_BY8;
1761                      info->chipwidth <= info->portwidth;
1762                      info->chipwidth <<= 1)
1763                         if (__flash_detect_cfi(info, qry))
1764                                 return 1;
1765         }
1766         debug ("not found\n");
1767         return 0;
1768 }
1769
1770 /*
1771  * Manufacturer-specific quirks. Add workarounds for geometry
1772  * reversal, etc. here.
1773  */
1774 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1775 {
1776         /* check if flash geometry needs reversal */
1777         if (qry->num_erase_regions > 1) {
1778                 /* reverse geometry if top boot part */
1779                 if (info->cfi_version < 0x3131) {
1780                         /* CFI < 1.1, try to guess from device id */
1781                         if ((info->device_id & 0x80) != 0)
1782                                 cfi_reverse_geometry(qry);
1783                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1784                         /* CFI >= 1.1, deduct from top/bottom flag */
1785                         /* note: ext_addr is valid since cfi_version > 0 */
1786                         cfi_reverse_geometry(qry);
1787                 }
1788         }
1789 }
1790
1791 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1792 {
1793         int reverse_geometry = 0;
1794
1795         /* Check the "top boot" bit in the PRI */
1796         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1797                 reverse_geometry = 1;
1798
1799         /* AT49BV6416(T) list the erase regions in the wrong order.
1800          * However, the device ID is identical with the non-broken
1801          * AT49BV642D they differ in the high byte.
1802          */
1803         if (info->device_id == 0xd6 || info->device_id == 0xd2)
1804                 reverse_geometry = !reverse_geometry;
1805
1806         if (reverse_geometry)
1807                 cfi_reverse_geometry(qry);
1808 }
1809
1810 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1811 {
1812         /* check if flash geometry needs reversal */
1813         if (qry->num_erase_regions > 1) {
1814                 /* reverse geometry if top boot part */
1815                 if (info->cfi_version < 0x3131) {
1816                         /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1817                         if (info->device_id == 0x22CA ||
1818                             info->device_id == 0x2256) {
1819                                 cfi_reverse_geometry(qry);
1820                         }
1821                 }
1822         }
1823 }
1824
1825 /*
1826  * The following code cannot be run from FLASH!
1827  *
1828  */
1829 ulong flash_get_size (phys_addr_t base, int banknum)
1830 {
1831         flash_info_t *info = &flash_info[banknum];
1832         int i, j;
1833         flash_sect_t sect_cnt;
1834         phys_addr_t sector;
1835         unsigned long tmp;
1836         int size_ratio;
1837         uchar num_erase_regions;
1838         int erase_region_size;
1839         int erase_region_count;
1840         struct cfi_qry qry;
1841
1842         memset(&qry, 0, sizeof(qry));
1843
1844         info->ext_addr = 0;
1845         info->cfi_version = 0;
1846 #ifdef CONFIG_SYS_FLASH_PROTECTION
1847         info->legacy_unlock = 0;
1848 #endif
1849
1850         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1851
1852         if (flash_detect_cfi (info, &qry)) {
1853                 info->vendor = le16_to_cpu(qry.p_id);
1854                 info->ext_addr = le16_to_cpu(qry.p_adr);
1855                 num_erase_regions = qry.num_erase_regions;
1856
1857                 if (info->ext_addr) {
1858                         info->cfi_version = (ushort) flash_read_uchar (info,
1859                                                 info->ext_addr + 3) << 8;
1860                         info->cfi_version |= (ushort) flash_read_uchar (info,
1861                                                 info->ext_addr + 4);
1862                 }
1863
1864 #ifdef DEBUG
1865                 flash_printqry (&qry);
1866 #endif
1867
1868                 switch (info->vendor) {
1869                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1870                 case CFI_CMDSET_INTEL_STANDARD:
1871                 case CFI_CMDSET_INTEL_EXTENDED:
1872                         cmdset_intel_init(info, &qry);
1873                         break;
1874                 case CFI_CMDSET_AMD_STANDARD:
1875                 case CFI_CMDSET_AMD_EXTENDED:
1876                         cmdset_amd_init(info, &qry);
1877                         break;
1878                 default:
1879                         printf("CFI: Unknown command set 0x%x\n",
1880                                         info->vendor);
1881                         /*
1882                          * Unfortunately, this means we don't know how
1883                          * to get the chip back to Read mode. Might
1884                          * as well try an Intel-style reset...
1885                          */
1886                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1887                         return 0;
1888                 }
1889
1890                 /* Do manufacturer-specific fixups */
1891                 switch (info->manufacturer_id) {
1892                 case 0x0001:
1893                         flash_fixup_amd(info, &qry);
1894                         break;
1895                 case 0x001f:
1896                         flash_fixup_atmel(info, &qry);
1897                         break;
1898                 case 0x0020:
1899                         flash_fixup_stm(info, &qry);
1900                         break;
1901                 }
1902
1903                 debug ("manufacturer is %d\n", info->vendor);
1904                 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1905                 debug ("device id is 0x%x\n", info->device_id);
1906                 debug ("device id2 is 0x%x\n", info->device_id2);
1907                 debug ("cfi version is 0x%04x\n", info->cfi_version);
1908
1909                 size_ratio = info->portwidth / info->chipwidth;
1910                 /* if the chip is x8/x16 reduce the ratio by half */
1911                 if ((info->interface == FLASH_CFI_X8X16)
1912                     && (info->chipwidth == FLASH_CFI_BY8)) {
1913                         size_ratio >>= 1;
1914                 }
1915                 debug ("size_ratio %d port %d bits chip %d bits\n",
1916                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1917                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1918                 debug ("found %d erase regions\n", num_erase_regions);
1919                 sect_cnt = 0;
1920                 sector = base;
1921                 for (i = 0; i < num_erase_regions; i++) {
1922                         if (i > NUM_ERASE_REGIONS) {
1923                                 printf ("%d erase regions found, only %d used\n",
1924                                         num_erase_regions, NUM_ERASE_REGIONS);
1925                                 break;
1926                         }
1927
1928                         tmp = le32_to_cpu(qry.erase_region_info[i]);
1929                         debug("erase region %u: 0x%08lx\n", i, tmp);
1930
1931                         erase_region_count = (tmp & 0xffff) + 1;
1932                         tmp >>= 16;
1933                         erase_region_size =
1934                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1935                         debug ("erase_region_count = %d erase_region_size = %d\n",
1936                                 erase_region_count, erase_region_size);
1937                         for (j = 0; j < erase_region_count; j++) {
1938                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1939                                         printf("ERROR: too many flash sectors\n");
1940                                         break;
1941                                 }
1942                                 info->start[sect_cnt] =
1943                                         (ulong)map_physmem(sector,
1944                                                            info->portwidth,
1945                                                            MAP_NOCACHE);
1946                                 sector += (erase_region_size * size_ratio);
1947
1948                                 /*
1949                                  * Only read protection status from
1950                                  * supported devices (intel...)
1951                                  */
1952                                 switch (info->vendor) {
1953                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1954                                 case CFI_CMDSET_INTEL_EXTENDED:
1955                                 case CFI_CMDSET_INTEL_STANDARD:
1956                                         info->protect[sect_cnt] =
1957                                                 flash_isset (info, sect_cnt,
1958                                                              FLASH_OFFSET_PROTECT,
1959                                                              FLASH_STATUS_PROTECT);
1960                                         break;
1961                                 default:
1962                                         /* default: not protected */
1963                                         info->protect[sect_cnt] = 0;
1964                                 }
1965
1966                                 sect_cnt++;
1967                         }
1968                 }
1969
1970                 info->sector_count = sect_cnt;
1971                 info->size = 1 << qry.dev_size;
1972                 /* multiply the size by the number of chips */
1973                 info->size *= size_ratio;
1974                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1975                 tmp = 1 << qry.block_erase_timeout_typ;
1976                 info->erase_blk_tout = tmp *
1977                         (1 << qry.block_erase_timeout_max);
1978                 tmp = (1 << qry.buf_write_timeout_typ) *
1979                         (1 << qry.buf_write_timeout_max);
1980
1981                 /* round up when converting to ms */
1982                 info->buffer_write_tout = (tmp + 999) / 1000;
1983                 tmp = (1 << qry.word_write_timeout_typ) *
1984                         (1 << qry.word_write_timeout_max);
1985                 /* round up when converting to ms */
1986                 info->write_tout = (tmp + 999) / 1000;
1987                 info->flash_id = FLASH_MAN_CFI;
1988                 if ((info->interface == FLASH_CFI_X8X16) &&
1989                     (info->chipwidth == FLASH_CFI_BY8)) {
1990                         /* XXX - Need to test on x8/x16 in parallel. */
1991                         info->portwidth >>= 1;
1992                 }
1993
1994                 flash_write_cmd (info, 0, 0, info->cmd_reset);
1995         }
1996
1997         return (info->size);
1998 }
1999
2000 void flash_set_verbose(uint v)
2001 {
2002         flash_verbose = v;
2003 }
2004
2005 /*-----------------------------------------------------------------------
2006  */
2007 unsigned long flash_init (void)
2008 {
2009         unsigned long size = 0;
2010         int i;
2011 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2012         struct apl_s {
2013                 ulong start;
2014                 ulong size;
2015         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2016 #endif
2017
2018 #ifdef CONFIG_SYS_FLASH_PROTECTION
2019         /* read environment from EEPROM */
2020         char s[64];
2021         getenv_f("unlock", s, sizeof(s));
2022 #endif
2023
2024         /* Init: no FLASHes known */
2025         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2026                 flash_info[i].flash_id = FLASH_UNKNOWN;
2027
2028                 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2029                         flash_get_size(cfi_flash_bank_addr(i), i);
2030                 size += flash_info[i].size;
2031                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2032 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2033                         printf ("## Unknown FLASH on Bank %d "
2034                                 "- Size = 0x%08lx = %ld MB\n",
2035                                 i+1, flash_info[i].size,
2036                                 flash_info[i].size >> 20);
2037 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2038                 }
2039 #ifdef CONFIG_SYS_FLASH_PROTECTION
2040                 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2041                         /*
2042                          * Only the U-Boot image and it's environment
2043                          * is protected, all other sectors are
2044                          * unprotected (unlocked) if flash hardware
2045                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2046                          * and the environment variable "unlock" is
2047                          * set to "yes".
2048                          */
2049                         if (flash_info[i].legacy_unlock) {
2050                                 int k;
2051
2052                                 /*
2053                                  * Disable legacy_unlock temporarily,
2054                                  * since flash_real_protect would
2055                                  * relock all other sectors again
2056                                  * otherwise.
2057                                  */
2058                                 flash_info[i].legacy_unlock = 0;
2059
2060                                 /*
2061                                  * Legacy unlocking (e.g. Intel J3) ->
2062                                  * unlock only one sector. This will
2063                                  * unlock all sectors.
2064                                  */
2065                                 flash_real_protect (&flash_info[i], 0, 0);
2066
2067                                 flash_info[i].legacy_unlock = 1;
2068
2069                                 /*
2070                                  * Manually mark other sectors as
2071                                  * unlocked (unprotected)
2072                                  */
2073                                 for (k = 1; k < flash_info[i].sector_count; k++)
2074                                         flash_info[i].protect[k] = 0;
2075                         } else {
2076                                 /*
2077                                  * No legancy unlocking -> unlock all sectors
2078                                  */
2079                                 flash_protect (FLAG_PROTECT_CLEAR,
2080                                                flash_info[i].start[0],
2081                                                flash_info[i].start[0]
2082                                                + flash_info[i].size - 1,
2083                                                &flash_info[i]);
2084                         }
2085                 }
2086 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2087         }
2088
2089         /* Monitor protection ON by default */
2090 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2091         (!defined(CONFIG_MONITOR_IS_IN_RAM))
2092         flash_protect (FLAG_PROTECT_SET,
2093                        CONFIG_SYS_MONITOR_BASE,
2094                        CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
2095                        flash_get_info(CONFIG_SYS_MONITOR_BASE));
2096 #endif
2097
2098         /* Environment protection ON by default */
2099 #ifdef CONFIG_ENV_IS_IN_FLASH
2100         flash_protect (FLAG_PROTECT_SET,
2101                        CONFIG_ENV_ADDR,
2102                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2103                        flash_get_info(CONFIG_ENV_ADDR));
2104 #endif
2105
2106         /* Redundant environment protection ON by default */
2107 #ifdef CONFIG_ENV_ADDR_REDUND
2108         flash_protect (FLAG_PROTECT_SET,
2109                        CONFIG_ENV_ADDR_REDUND,
2110                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2111                        flash_get_info(CONFIG_ENV_ADDR_REDUND));
2112 #endif
2113
2114 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2115         for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2116                 debug("autoprotecting from %08x to %08x\n",
2117                       apl[i].start, apl[i].start + apl[i].size - 1);
2118                 flash_protect (FLAG_PROTECT_SET,
2119                                apl[i].start,
2120                                apl[i].start + apl[i].size - 1,
2121                                flash_get_info(apl[i].start));
2122         }
2123 #endif
2124
2125 #ifdef CONFIG_FLASH_CFI_MTD
2126         cfi_mtd_init();
2127 #endif
2128
2129         return (size);
2130 }