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 #ifndef CONFIG_SYS_FLASH_BANKS_LIST
  66 #define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE }
  67 #endif
  68
  69 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
  70 static uint flash_verbose = 1;
  71
  72 /* use CONFIG_SYS_MAX_FLASH_BANKS_DETECT if defined */
  73 #ifdef CONFIG_SYS_MAX_FLASH_BANKS_DETECT
  74 # define CFI_MAX_FLASH_BANKS    CONFIG_SYS_MAX_FLASH_BANKS_DETECT
  75 #else
  76 # define CFI_MAX_FLASH_BANKS    CONFIG_SYS_MAX_FLASH_BANKS
  77 #endif
  78
  79 flash_info_t flash_info[CFI_MAX_FLASH_BANKS];   /* FLASH chips info */
  80
  81 /*
  82  * Check if chip width is defined. If not, start detecting with 8bit.
  83  */
  84 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
  85 #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_8BIT
  86 #endif
  87
  88 static phys_addr_t __cfi_flash_bank_addr(int i)
  89 {
  90         return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
  91 }
  92 phys_addr_t cfi_flash_bank_addr(int i)
  93         __attribute__((weak, alias("__cfi_flash_bank_addr")));
  94
  95 static void __flash_write8(u8 value, void *addr)
  96 {
  97         __raw_writeb(value, addr);
  98 }
  99
 100 static void __flash_write16(u16 value, void *addr)
 101 {
 102         __raw_writew(value, addr);
 103 }
 104
 105 static void __flash_write32(u32 value, void *addr)
 106 {
 107         __raw_writel(value, addr);
 108 }
 109
 110 static void __flash_write64(u64 value, void *addr)
 111 {
 112         /* No architectures currently implement __raw_writeq() */
 113         *(volatile u64 *)addr = value;
 114 }
 115
 116 static u8 __flash_read8(void *addr)
 117 {
 118         return __raw_readb(addr);
 119 }
 120
 121 static u16 __flash_read16(void *addr)
 122 {
 123         return __raw_readw(addr);
 124 }
 125
 126 static u32 __flash_read32(void *addr)
 127 {
 128         return __raw_readl(addr);
 129 }
 130
 131 static u64 __flash_read64(void *addr)
 132 {
 133         /* No architectures currently implement __raw_readq() */
 134         return *(volatile u64 *)addr;
 135 }
 136
 137 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
 138 void flash_write8(u8 value, void *addr)__attribute__((weak, alias("__flash_write8")));
 139 void flash_write16(u16 value, void *addr)__attribute__((weak, alias("__flash_write16")));
 140 void flash_write32(u32 value, void *addr)__attribute__((weak, alias("__flash_write32")));
 141 void flash_write64(u64 value, void *addr)__attribute__((weak, alias("__flash_write64")));
 142 u8 flash_read8(void *addr)__attribute__((weak, alias("__flash_read8")));
 143 u16 flash_read16(void *addr)__attribute__((weak, alias("__flash_read16")));
 144 u32 flash_read32(void *addr)__attribute__((weak, alias("__flash_read32")));
 145 u64 flash_read64(void *addr)__attribute__((weak, alias("__flash_read64")));
 146 #else
 147 #define flash_write8    __flash_write8
 148 #define flash_write16   __flash_write16
 149 #define flash_write32   __flash_write32
 150 #define flash_write64   __flash_write64
 151 #define flash_read8     __flash_read8
 152 #define flash_read16    __flash_read16
 153 #define flash_read32    __flash_read32
 154 #define flash_read64    __flash_read64
 155 #endif
 156
 157 /*-----------------------------------------------------------------------
 158  */
 159 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
 160 flash_info_t *flash_get_info(ulong base)
 161 {
 162         int i;
 163         flash_info_t *info = NULL;
 164
 165         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
 166                 info = & flash_info[i];
 167                 if (info->size && info->start[0] <= base &&
 168                     base <= info->start[0] + info->size - 1)
 169                         break;
 170         }
 171
 172         return info;
 173 }
 174 #endif
 175
 176 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
 177 {
 178         if (sect != (info->sector_count - 1))
 179                 return info->start[sect + 1] - info->start[sect];
 180         else
 181                 return info->start[0] + info->size - info->start[sect];
 182 }
 183
 184 /*-----------------------------------------------------------------------
 185  * create an address based on the offset and the port width
 186  */
 187 static inline void *
 188 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
 189 {
 190         unsigned int byte_offset = offset * info->portwidth;
 191
 192         return (void *)(info->start[sect] + byte_offset);
 193 }
 194
 195 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
 196                 unsigned int offset, void *addr)
 197 {
 198 }
 199
 200 /*-----------------------------------------------------------------------
 201  * make a proper sized command based on the port and chip widths
 202  */
 203 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
 204 {
 205         int i;
 206         int cword_offset;
 207         int cp_offset;
 208 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 209         u32 cmd_le = cpu_to_le32(cmd);
 210 #endif
 211         uchar val;
 212         uchar *cp = (uchar *) cmdbuf;
 213
 214         for (i = info->portwidth; i > 0; i--){
 215                 cword_offset = (info->portwidth-i)%info->chipwidth;
 216 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 217                 cp_offset = info->portwidth - i;
 218                 val = *((uchar*)&cmd_le + cword_offset);
 219 #else
 220                 cp_offset = i - 1;
 221                 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
 222 #endif
 223                 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
 224         }
 225 }
 226
 227 #ifdef DEBUG
 228 /*-----------------------------------------------------------------------
 229  * Debug support
 230  */
 231 static void print_longlong (char *str, unsigned long long data)
 232 {
 233         int i;
 234         char *cp;
 235
 236         cp = (char *) &data;
 237         for (i = 0; i < 8; i++)
 238                 sprintf (&str[i * 2], "%2.2x", *cp++);
 239 }
 240
 241 static void flash_printqry (struct cfi_qry *qry)
 242 {
 243         u8 *p = (u8 *)qry;
 244         int x, y;
 245
 246         for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
 247                 debug("%02x : ", x);
 248                 for (y = 0; y < 16; y++)
 249                         debug("%2.2x ", p[x + y]);
 250                 debug(" ");
 251                 for (y = 0; y < 16; y++) {
 252                         unsigned char c = p[x + y];
 253                         if (c >= 0x20 && c <= 0x7e)
 254                                 debug("%c", c);
 255                         else
 256                                 debug(".");
 257                 }
 258                 debug("\n");
 259         }
 260 }
 261 #endif
 262
 263
 264 /*-----------------------------------------------------------------------
 265  * read a character at a port width address
 266  */
 267 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
 268 {
 269         uchar *cp;
 270         uchar retval;
 271
 272         cp = flash_map (info, 0, offset);
 273 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 274         retval = flash_read8(cp);
 275 #else
 276         retval = flash_read8(cp + info->portwidth - 1);
 277 #endif
 278         flash_unmap (info, 0, offset, cp);
 279         return retval;
 280 }
 281
 282 /*-----------------------------------------------------------------------
 283  * read a word at a port width address, assume 16bit bus
 284  */
 285 static inline ushort flash_read_word (flash_info_t * info, uint offset)
 286 {
 287         ushort *addr, retval;
 288
 289         addr = flash_map (info, 0, offset);
 290         retval = flash_read16 (addr);
 291         flash_unmap (info, 0, offset, addr);
 292         return retval;
 293 }
 294
 295
 296 /*-----------------------------------------------------------------------
 297  * read a long word by picking the least significant byte of each maximum
 298  * port size word. Swap for ppc format.
 299  */
 300 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
 301                               uint offset)
 302 {
 303         uchar *addr;
 304         ulong retval;
 305
 306 #ifdef DEBUG
 307         int x;
 308 #endif
 309         addr = flash_map (info, sect, offset);
 310
 311 #ifdef DEBUG
 312         debug ("long addr is at %p info->portwidth = %d\n", addr,
 313                info->portwidth);
 314         for (x = 0; x < 4 * info->portwidth; x++) {
 315                 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
 316         }
 317 #endif
 318 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 319         retval = ((flash_read8(addr) << 16) |
 320                   (flash_read8(addr + info->portwidth) << 24) |
 321                   (flash_read8(addr + 2 * info->portwidth)) |
 322                   (flash_read8(addr + 3 * info->portwidth) << 8));
 323 #else
 324         retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
 325                   (flash_read8(addr + info->portwidth - 1) << 16) |
 326                   (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
 327                   (flash_read8(addr + 3 * info->portwidth - 1)));
 328 #endif
 329         flash_unmap(info, sect, offset, addr);
 330
 331         return retval;
 332 }
 333
 334 /*
 335  * Write a proper sized command to the correct address
 336  */
 337 void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
 338                       uint offset, u32 cmd)
 339 {
 340
 341         void *addr;
 342         cfiword_t cword;
 343
 344         addr = flash_map (info, sect, offset);
 345         flash_make_cmd (info, cmd, &cword);
 346         switch (info->portwidth) {
 347         case FLASH_CFI_8BIT:
 348                 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
 349                        cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 350                 flash_write8(cword.c, addr);
 351                 break;
 352         case FLASH_CFI_16BIT:
 353                 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
 354                        cmd, cword.w,
 355                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 356                 flash_write16(cword.w, addr);
 357                 break;
 358         case FLASH_CFI_32BIT:
 359                 debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr,
 360                        cmd, cword.l,
 361                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 362                 flash_write32(cword.l, addr);
 363                 break;
 364         case FLASH_CFI_64BIT:
 365 #ifdef DEBUG
 366                 {
 367                         char str[20];
 368
 369                         print_longlong (str, cword.ll);
 370
 371                         debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 372                                addr, cmd, str,
 373                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 374                 }
 375 #endif
 376                 flash_write64(cword.ll, addr);
 377                 break;
 378         }
 379
 380         /* Ensure all the instructions are fully finished */
 381         sync();
 382
 383         flash_unmap(info, sect, offset, addr);
 384 }
 385
 386 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
 387 {
 388         flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
 389         flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
 390 }
 391
 392 /*-----------------------------------------------------------------------
 393  */
 394 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
 395                           uint offset, uchar cmd)
 396 {
 397         void *addr;
 398         cfiword_t cword;
 399         int retval;
 400
 401         addr = flash_map (info, sect, offset);
 402         flash_make_cmd (info, cmd, &cword);
 403
 404         debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
 405         switch (info->portwidth) {
 406         case FLASH_CFI_8BIT:
 407                 debug ("is= %x %x\n", flash_read8(addr), cword.c);
 408                 retval = (flash_read8(addr) == cword.c);
 409                 break;
 410         case FLASH_CFI_16BIT:
 411                 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w);
 412                 retval = (flash_read16(addr) == cword.w);
 413                 break;
 414         case FLASH_CFI_32BIT:
 415                 debug ("is= %8.8x %8.8lx\n", flash_read32(addr), cword.l);
 416                 retval = (flash_read32(addr) == cword.l);
 417                 break;
 418         case FLASH_CFI_64BIT:
 419 #ifdef DEBUG
 420                 {
 421                         char str1[20];
 422                         char str2[20];
 423
 424                         print_longlong (str1, flash_read64(addr));
 425                         print_longlong (str2, cword.ll);
 426                         debug ("is= %s %s\n", str1, str2);
 427                 }
 428 #endif
 429                 retval = (flash_read64(addr) == cword.ll);
 430                 break;
 431         default:
 432                 retval = 0;
 433                 break;
 434         }
 435         flash_unmap(info, sect, offset, addr);
 436
 437         return retval;
 438 }
 439
 440 /*-----------------------------------------------------------------------
 441  */
 442 static int flash_isset (flash_info_t * info, flash_sect_t sect,
 443                         uint offset, uchar cmd)
 444 {
 445         void *addr;
 446         cfiword_t cword;
 447         int retval;
 448
 449         addr = flash_map (info, sect, offset);
 450         flash_make_cmd (info, cmd, &cword);
 451         switch (info->portwidth) {
 452         case FLASH_CFI_8BIT:
 453                 retval = ((flash_read8(addr) & cword.c) == cword.c);
 454                 break;
 455         case FLASH_CFI_16BIT:
 456                 retval = ((flash_read16(addr) & cword.w) == cword.w);
 457                 break;
 458         case FLASH_CFI_32BIT:
 459                 retval = ((flash_read32(addr) & cword.l) == cword.l);
 460                 break;
 461         case FLASH_CFI_64BIT:
 462                 retval = ((flash_read64(addr) & cword.ll) == cword.ll);
 463                 break;
 464         default:
 465                 retval = 0;
 466                 break;
 467         }
 468         flash_unmap(info, sect, offset, addr);
 469
 470         return retval;
 471 }
 472
 473 /*-----------------------------------------------------------------------
 474  */
 475 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
 476                          uint offset, uchar cmd)
 477 {
 478         void *addr;
 479         cfiword_t cword;
 480         int retval;
 481
 482         addr = flash_map (info, sect, offset);
 483         flash_make_cmd (info, cmd, &cword);
 484         switch (info->portwidth) {
 485         case FLASH_CFI_8BIT:
 486                 retval = flash_read8(addr) != flash_read8(addr);
 487                 break;
 488         case FLASH_CFI_16BIT:
 489                 retval = flash_read16(addr) != flash_read16(addr);
 490                 break;
 491         case FLASH_CFI_32BIT:
 492                 retval = flash_read32(addr) != flash_read32(addr);
 493                 break;
 494         case FLASH_CFI_64BIT:
 495                 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
 496                            (flash_read32(addr+4) != flash_read32(addr+4)) );
 497                 break;
 498         default:
 499                 retval = 0;
 500                 break;
 501         }
 502         flash_unmap(info, sect, offset, addr);
 503
 504         return retval;
 505 }
 506
 507 /*
 508  * flash_is_busy - check to see if the flash is busy
 509  *
 510  * This routine checks the status of the chip and returns true if the
 511  * chip is busy.
 512  */
 513 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
 514 {
 515         int retval;
 516
 517         switch (info->vendor) {
 518         case CFI_CMDSET_INTEL_PROG_REGIONS:
 519         case CFI_CMDSET_INTEL_STANDARD:
 520         case CFI_CMDSET_INTEL_EXTENDED:
 521                 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
 522                 break;
 523         case CFI_CMDSET_AMD_STANDARD:
 524         case CFI_CMDSET_AMD_EXTENDED:
 525 #ifdef CONFIG_FLASH_CFI_LEGACY
 526         case CFI_CMDSET_AMD_LEGACY:
 527 #endif
 528                 retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
 529                 break;
 530         default:
 531                 retval = 0;
 532         }
 533         debug ("flash_is_busy: %d\n", retval);
 534         return retval;
 535 }
 536
 537 /*-----------------------------------------------------------------------
 538  *  wait for XSR.7 to be set. Time out with an error if it does not.
 539  *  This routine does not set the flash to read-array mode.
 540  */
 541 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 542                                ulong tout, char *prompt)
 543 {
 544         ulong start;
 545
 546 #if CONFIG_SYS_HZ != 1000
 547         if ((ulong)CONFIG_SYS_HZ > 100000)
 548                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 549         else
 550                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 551 #endif
 552
 553         /* Wait for command completion */
 554         reset_timer();
 555         start = get_timer (0);
 556         while (flash_is_busy (info, sector)) {
 557                 if (get_timer (start) > tout) {
 558                         printf ("Flash %s timeout at address %lx data %lx\n",
 559                                 prompt, info->start[sector],
 560                                 flash_read_long (info, sector, 0));
 561                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 562                         return ERR_TIMOUT;
 563                 }
 564                 udelay (1);             /* also triggers watchdog */
 565         }
 566         return ERR_OK;
 567 }
 568
 569 /*-----------------------------------------------------------------------
 570  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 571  * do a full status check.
 572  *
 573  * This routine sets the flash to read-array mode.
 574  */
 575 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 576                                     ulong tout, char *prompt)
 577 {
 578         int retcode;
 579
 580         retcode = flash_status_check (info, sector, tout, prompt);
 581         switch (info->vendor) {
 582         case CFI_CMDSET_INTEL_PROG_REGIONS:
 583         case CFI_CMDSET_INTEL_EXTENDED:
 584         case CFI_CMDSET_INTEL_STANDARD:
 585                 if ((retcode != ERR_OK)
 586                     && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 587                         retcode = ERR_INVAL;
 588                         printf ("Flash %s error at address %lx\n", prompt,
 589                                 info->start[sector]);
 590                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
 591                                          FLASH_STATUS_PSLBS)) {
 592                                 puts ("Command Sequence Error.\n");
 593                         } else if (flash_isset (info, sector, 0,
 594                                                 FLASH_STATUS_ECLBS)) {
 595                                 puts ("Block Erase Error.\n");
 596                                 retcode = ERR_NOT_ERASED;
 597                         } else if (flash_isset (info, sector, 0,
 598                                                 FLASH_STATUS_PSLBS)) {
 599                                 puts ("Locking Error\n");
 600                         }
 601                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 602                                 puts ("Block locked.\n");
 603                                 retcode = ERR_PROTECTED;
 604                         }
 605                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 606                                 puts ("Vpp Low Error.\n");
 607                 }
 608                 flash_write_cmd (info, sector, 0, info->cmd_reset);
 609                 break;
 610         default:
 611                 break;
 612         }
 613         return retcode;
 614 }
 615
 616 static int use_flash_status_poll(flash_info_t *info)
 617 {
 618 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 619         if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
 620             info->vendor == CFI_CMDSET_AMD_STANDARD)
 621                 return 1;
 622 #endif
 623         return 0;
 624 }
 625
 626 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 627                              ulong tout, char *prompt)
 628 {
 629 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 630         ulong start;
 631         int ready;
 632
 633 #if CONFIG_SYS_HZ != 1000
 634         if ((ulong)CONFIG_SYS_HZ > 100000)
 635                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 636         else
 637                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 638 #endif
 639
 640         /* Wait for command completion */
 641         reset_timer();
 642         start = get_timer(0);
 643         while (1) {
 644                 switch (info->portwidth) {
 645                 case FLASH_CFI_8BIT:
 646                         ready = flash_read8(dst) == flash_read8(src);
 647                         break;
 648                 case FLASH_CFI_16BIT:
 649                         ready = flash_read16(dst) == flash_read16(src);
 650                         break;
 651                 case FLASH_CFI_32BIT:
 652                         ready = flash_read32(dst) == flash_read32(src);
 653                         break;
 654                 case FLASH_CFI_64BIT:
 655                         ready = flash_read64(dst) == flash_read64(src);
 656                         break;
 657                 default:
 658                         ready = 0;
 659                         break;
 660                 }
 661                 if (ready)
 662                         break;
 663                 if (get_timer(start) > tout) {
 664                         printf("Flash %s timeout at address %lx data %lx\n",
 665                                prompt, (ulong)dst, (ulong)flash_read8(dst));
 666                         return ERR_TIMOUT;
 667                 }
 668                 udelay(1);              /* also triggers watchdog */
 669         }
 670 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
 671         return ERR_OK;
 672 }
 673
 674 /*-----------------------------------------------------------------------
 675  */
 676 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 677 {
 678 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 679         unsigned short  w;
 680         unsigned int    l;
 681         unsigned long long ll;
 682 #endif
 683
 684         switch (info->portwidth) {
 685         case FLASH_CFI_8BIT:
 686                 cword->c = c;
 687                 break;
 688         case FLASH_CFI_16BIT:
 689 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 690                 w = c;
 691                 w <<= 8;
 692                 cword->w = (cword->w >> 8) | w;
 693 #else
 694                 cword->w = (cword->w << 8) | c;
 695 #endif
 696                 break;
 697         case FLASH_CFI_32BIT:
 698 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 699                 l = c;
 700                 l <<= 24;
 701                 cword->l = (cword->l >> 8) | l;
 702 #else
 703                 cword->l = (cword->l << 8) | c;
 704 #endif
 705                 break;
 706         case FLASH_CFI_64BIT:
 707 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 708                 ll = c;
 709                 ll <<= 56;
 710                 cword->ll = (cword->ll >> 8) | ll;
 711 #else
 712                 cword->ll = (cword->ll << 8) | c;
 713 #endif
 714                 break;
 715         }
 716 }
 717
 718 /*
 719  * Loop through the sector table starting from the previously found sector.
 720  * Searches forwards or backwards, dependent on the passed address.
 721  */
 722 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
 723 {
 724         static flash_sect_t saved_sector = 0; /* previously found sector */
 725         flash_sect_t sector = saved_sector;
 726
 727         while ((info->start[sector] < addr)
 728                         && (sector < info->sector_count - 1))
 729                 sector++;
 730         while ((info->start[sector] > addr) && (sector > 0))
 731                 /*
 732                  * also decrements the sector in case of an overshot
 733                  * in the first loop
 734                  */
 735                 sector--;
 736
 737         saved_sector = sector;
 738         return sector;
 739 }
 740
 741 /*-----------------------------------------------------------------------
 742  */
 743 static int flash_write_cfiword (flash_info_t * info, ulong dest,
 744                                 cfiword_t cword)
 745 {
 746         void *dstaddr = (void *)dest;
 747         int flag;
 748         flash_sect_t sect = 0;
 749         char sect_found = 0;
 750
 751         /* Check if Flash is (sufficiently) erased */
 752         switch (info->portwidth) {
 753         case FLASH_CFI_8BIT:
 754                 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
 755                 break;
 756         case FLASH_CFI_16BIT:
 757                 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
 758                 break;
 759         case FLASH_CFI_32BIT:
 760                 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
 761                 break;
 762         case FLASH_CFI_64BIT:
 763                 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
 764                 break;
 765         default:
 766                 flag = 0;
 767                 break;
 768         }
 769         if (!flag)
 770                 return ERR_NOT_ERASED;
 771
 772         /* Disable interrupts which might cause a timeout here */
 773         flag = disable_interrupts ();
 774
 775         switch (info->vendor) {
 776         case CFI_CMDSET_INTEL_PROG_REGIONS:
 777         case CFI_CMDSET_INTEL_EXTENDED:
 778         case CFI_CMDSET_INTEL_STANDARD:
 779                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 780                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
 781                 break;
 782         case CFI_CMDSET_AMD_EXTENDED:
 783         case CFI_CMDSET_AMD_STANDARD:
 784                 sect = find_sector(info, dest);
 785                 flash_unlock_seq (info, sect);
 786                 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 787                 sect_found = 1;
 788                 break;
 789 #ifdef CONFIG_FLASH_CFI_LEGACY
 790         case CFI_CMDSET_AMD_LEGACY:
 791                 sect = find_sector(info, dest);
 792                 flash_unlock_seq (info, 0);
 793                 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 794                 sect_found = 1;
 795                 break;
 796 #endif
 797         }
 798
 799         switch (info->portwidth) {
 800         case FLASH_CFI_8BIT:
 801                 flash_write8(cword.c, dstaddr);
 802                 break;
 803         case FLASH_CFI_16BIT:
 804                 flash_write16(cword.w, dstaddr);
 805                 break;
 806         case FLASH_CFI_32BIT:
 807                 flash_write32(cword.l, dstaddr);
 808                 break;
 809         case FLASH_CFI_64BIT:
 810                 flash_write64(cword.ll, dstaddr);
 811                 break;
 812         }
 813
 814         /* re-enable interrupts if necessary */
 815         if (flag)
 816                 enable_interrupts ();
 817
 818         if (!sect_found)
 819                 sect = find_sector (info, dest);
 820
 821         if (use_flash_status_poll(info))
 822                 return flash_status_poll(info, &cword, dstaddr,
 823                                          info->write_tout, "write");
 824         else
 825                 return flash_full_status_check(info, sect,
 826                                                info->write_tout, "write");
 827 }
 828
 829 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 830
 831 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 832                                   int len)
 833 {
 834         flash_sect_t sector;
 835         int cnt;
 836         int retcode;
 837         void *src = cp;
 838         void *dst = (void *)dest;
 839         void *dst2 = dst;
 840         int flag = 0;
 841         uint offset = 0;
 842         unsigned int shift;
 843         uchar write_cmd;
 844
 845         switch (info->portwidth) {
 846         case FLASH_CFI_8BIT:
 847                 shift = 0;
 848                 break;
 849         case FLASH_CFI_16BIT:
 850                 shift = 1;
 851                 break;
 852         case FLASH_CFI_32BIT:
 853                 shift = 2;
 854                 break;
 855         case FLASH_CFI_64BIT:
 856                 shift = 3;
 857                 break;
 858         default:
 859                 retcode = ERR_INVAL;
 860                 goto out_unmap;
 861         }
 862
 863         cnt = len >> shift;
 864
 865         while ((cnt-- > 0) && (flag == 0)) {
 866                 switch (info->portwidth) {
 867                 case FLASH_CFI_8BIT:
 868                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 869                                 flash_read8(src));
 870                         src += 1, dst2 += 1;
 871                         break;
 872                 case FLASH_CFI_16BIT:
 873                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 874                                 flash_read16(src));
 875                         src += 2, dst2 += 2;
 876                         break;
 877                 case FLASH_CFI_32BIT:
 878                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 879                                 flash_read32(src));
 880                         src += 4, dst2 += 4;
 881                         break;
 882                 case FLASH_CFI_64BIT:
 883                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 884                                 flash_read64(src));
 885                         src += 8, dst2 += 8;
 886                         break;
 887                 }
 888         }
 889         if (!flag) {
 890                 retcode = ERR_NOT_ERASED;
 891                 goto out_unmap;
 892         }
 893
 894         src = cp;
 895         sector = find_sector (info, dest);
 896
 897         switch (info->vendor) {
 898         case CFI_CMDSET_INTEL_PROG_REGIONS:
 899         case CFI_CMDSET_INTEL_STANDARD:
 900         case CFI_CMDSET_INTEL_EXTENDED:
 901                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 902                                         FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
 903                 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 904                 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
 905                 flash_write_cmd (info, sector, 0, write_cmd);
 906                 retcode = flash_status_check (info, sector,
 907                                               info->buffer_write_tout,
 908                                               "write to buffer");
 909                 if (retcode == ERR_OK) {
 910                         /* reduce the number of loops by the width of
 911                          * the port */
 912                         cnt = len >> shift;
 913                         flash_write_cmd (info, sector, 0, cnt - 1);
 914                         while (cnt-- > 0) {
 915                                 switch (info->portwidth) {
 916                                 case FLASH_CFI_8BIT:
 917                                         flash_write8(flash_read8(src), dst);
 918                                         src += 1, dst += 1;
 919                                         break;
 920                                 case FLASH_CFI_16BIT:
 921                                         flash_write16(flash_read16(src), dst);
 922                                         src += 2, dst += 2;
 923                                         break;
 924                                 case FLASH_CFI_32BIT:
 925                                         flash_write32(flash_read32(src), dst);
 926                                         src += 4, dst += 4;
 927                                         break;
 928                                 case FLASH_CFI_64BIT:
 929                                         flash_write64(flash_read64(src), dst);
 930                                         src += 8, dst += 8;
 931                                         break;
 932                                 default:
 933                                         retcode = ERR_INVAL;
 934                                         goto out_unmap;
 935                                 }
 936                         }
 937                         flash_write_cmd (info, sector, 0,
 938                                          FLASH_CMD_WRITE_BUFFER_CONFIRM);
 939                         retcode = flash_full_status_check (
 940                                 info, sector, info->buffer_write_tout,
 941                                 "buffer write");
 942                 }
 943
 944                 break;
 945
 946         case CFI_CMDSET_AMD_STANDARD:
 947         case CFI_CMDSET_AMD_EXTENDED:
 948                 flash_unlock_seq(info,0);
 949
 950 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 951                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 952 #endif
 953                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
 954                 cnt = len >> shift;
 955                 flash_write_cmd(info, sector, offset, cnt - 1);
 956
 957                 switch (info->portwidth) {
 958                 case FLASH_CFI_8BIT:
 959                         while (cnt-- > 0) {
 960                                 flash_write8(flash_read8(src), dst);
 961                                 src += 1, dst += 1;
 962                         }
 963                         break;
 964                 case FLASH_CFI_16BIT:
 965                         while (cnt-- > 0) {
 966                                 flash_write16(flash_read16(src), dst);
 967                                 src += 2, dst += 2;
 968                         }
 969                         break;
 970                 case FLASH_CFI_32BIT:
 971                         while (cnt-- > 0) {
 972                                 flash_write32(flash_read32(src), dst);
 973                                 src += 4, dst += 4;
 974                         }
 975                         break;
 976                 case FLASH_CFI_64BIT:
 977                         while (cnt-- > 0) {
 978                                 flash_write64(flash_read64(src), dst);
 979                                 src += 8, dst += 8;
 980                         }
 981                         break;
 982                 default:
 983                         retcode = ERR_INVAL;
 984                         goto out_unmap;
 985                 }
 986
 987                 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
 988                 if (use_flash_status_poll(info))
 989                         retcode = flash_status_poll(info, src - (1 << shift),
 990                                                     dst - (1 << shift),
 991                                                     info->buffer_write_tout,
 992                                                     "buffer write");
 993                 else
 994                         retcode = flash_full_status_check(info, sector,
 995                                                           info->buffer_write_tout,
 996                                                           "buffer write");
 997                 break;
 998
 999         default:
1000                 debug ("Unknown Command Set\n");
1001                 retcode = ERR_INVAL;
1002                 break;
1003         }
1004
1005 out_unmap:
1006         return retcode;
1007 }
1008 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1009
1010
1011 /*-----------------------------------------------------------------------
1012  */
1013 int flash_erase (flash_info_t * info, int s_first, int s_last)
1014 {
1015         int rcode = 0;
1016         int prot;
1017         flash_sect_t sect;
1018         int st;
1019
1020         if (info->flash_id != FLASH_MAN_CFI) {
1021                 puts ("Can't erase unknown flash type - aborted\n");
1022                 return 1;
1023         }
1024         if ((s_first < 0) || (s_first > s_last)) {
1025                 puts ("- no sectors to erase\n");
1026                 return 1;
1027         }
1028
1029         prot = 0;
1030         for (sect = s_first; sect <= s_last; ++sect) {
1031                 if (info->protect[sect]) {
1032                         prot++;
1033                 }
1034         }
1035         if (prot) {
1036                 printf ("- Warning: %d protected sectors will not be erased!\n",
1037                         prot);
1038         } else if (flash_verbose) {
1039                 putc ('\n');
1040         }
1041
1042
1043         for (sect = s_first; sect <= s_last; sect++) {
1044                 if (info->protect[sect] == 0) { /* not protected */
1045                         switch (info->vendor) {
1046                         case CFI_CMDSET_INTEL_PROG_REGIONS:
1047                         case CFI_CMDSET_INTEL_STANDARD:
1048                         case CFI_CMDSET_INTEL_EXTENDED:
1049                                 flash_write_cmd (info, sect, 0,
1050                                                  FLASH_CMD_CLEAR_STATUS);
1051                                 flash_write_cmd (info, sect, 0,
1052                                                  FLASH_CMD_BLOCK_ERASE);
1053                                 flash_write_cmd (info, sect, 0,
1054                                                  FLASH_CMD_ERASE_CONFIRM);
1055                                 break;
1056                         case CFI_CMDSET_AMD_STANDARD:
1057                         case CFI_CMDSET_AMD_EXTENDED:
1058                                 flash_unlock_seq (info, sect);
1059                                 flash_write_cmd (info, sect,
1060                                                 info->addr_unlock1,
1061                                                 AMD_CMD_ERASE_START);
1062                                 flash_unlock_seq (info, sect);
1063                                 flash_write_cmd (info, sect, 0,
1064                                                  AMD_CMD_ERASE_SECTOR);
1065                                 break;
1066 #ifdef CONFIG_FLASH_CFI_LEGACY
1067                         case CFI_CMDSET_AMD_LEGACY:
1068                                 flash_unlock_seq (info, 0);
1069                                 flash_write_cmd (info, 0, info->addr_unlock1,
1070                                                 AMD_CMD_ERASE_START);
1071                                 flash_unlock_seq (info, 0);
1072                                 flash_write_cmd (info, sect, 0,
1073                                                 AMD_CMD_ERASE_SECTOR);
1074                                 break;
1075 #endif
1076                         default:
1077                                 debug ("Unkown flash vendor %d\n",
1078                                        info->vendor);
1079                                 break;
1080                         }
1081
1082                         if (use_flash_status_poll(info)) {
1083                                 cfiword_t cword = (cfiword_t)0xffffffffffffffffULL;
1084                                 void *dest;
1085                                 dest = flash_map(info, sect, 0);
1086                                 st = flash_status_poll(info, &cword, dest,
1087                                                        info->erase_blk_tout, "erase");
1088                                 flash_unmap(info, sect, 0, dest);
1089                         } else
1090                                 st = flash_full_status_check(info, sect,
1091                                                              info->erase_blk_tout,
1092                                                              "erase");
1093                         if (st)
1094                                 rcode = 1;
1095                         else if (flash_verbose)
1096                                 putc ('.');
1097                 }
1098         }
1099
1100         if (flash_verbose)
1101                 puts (" done\n");
1102
1103         return rcode;
1104 }
1105
1106 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1107 static int sector_erased(flash_info_t *info, int i)
1108 {
1109         int k;
1110         int size;
1111         volatile unsigned long *flash;
1112
1113         /*
1114          * Check if whole sector is erased
1115          */
1116         size = flash_sector_size(info, i);
1117         flash = (volatile unsigned long *) info->start[i];
1118         /* divide by 4 for longword access */
1119         size = size >> 2;
1120
1121         for (k = 0; k < size; k++) {
1122                 if (*flash++ != 0xffffffff)
1123                         return 0;       /* not erased */
1124         }
1125
1126         return 1;                       /* erased */
1127 }
1128 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1129
1130 void flash_print_info (flash_info_t * info)
1131 {
1132         int i;
1133
1134         if (info->flash_id != FLASH_MAN_CFI) {
1135                 puts ("missing or unknown FLASH type\n");
1136                 return;
1137         }
1138
1139         printf ("%s FLASH (%d x %d)",
1140                 info->name,
1141                 (info->portwidth << 3), (info->chipwidth << 3));
1142         if (info->size < 1024*1024)
1143                 printf ("  Size: %ld kB in %d Sectors\n",
1144                         info->size >> 10, info->sector_count);
1145         else
1146                 printf ("  Size: %ld MB in %d Sectors\n",
1147                         info->size >> 20, info->sector_count);
1148         printf ("  ");
1149         switch (info->vendor) {
1150                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1151                         printf ("Intel Prog Regions");
1152                         break;
1153                 case CFI_CMDSET_INTEL_STANDARD:
1154                         printf ("Intel Standard");
1155                         break;
1156                 case CFI_CMDSET_INTEL_EXTENDED:
1157                         printf ("Intel Extended");
1158                         break;
1159                 case CFI_CMDSET_AMD_STANDARD:
1160                         printf ("AMD Standard");
1161                         break;
1162                 case CFI_CMDSET_AMD_EXTENDED:
1163                         printf ("AMD Extended");
1164                         break;
1165 #ifdef CONFIG_FLASH_CFI_LEGACY
1166                 case CFI_CMDSET_AMD_LEGACY:
1167                         printf ("AMD Legacy");
1168                         break;
1169 #endif
1170                 default:
1171                         printf ("Unknown (%d)", info->vendor);
1172                         break;
1173         }
1174         printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1175                 info->manufacturer_id);
1176         printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1177                 info->device_id);
1178         if (info->device_id == 0x7E) {
1179                 printf("%04X", info->device_id2);
1180         }
1181         printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1182                 info->erase_blk_tout,
1183                 info->write_tout);
1184         if (info->buffer_size > 1) {
1185                 printf ("  Buffer write timeout: %ld ms, "
1186                         "buffer size: %d bytes\n",
1187                 info->buffer_write_tout,
1188                 info->buffer_size);
1189         }
1190
1191         puts ("\n  Sector Start Addresses:");
1192         for (i = 0; i < info->sector_count; ++i) {
1193                 if (ctrlc())
1194                         break;
1195                 if ((i % 5) == 0)
1196                         putc('\n');
1197 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1198                 /* print empty and read-only info */
1199                 printf ("  %08lX %c %s ",
1200                         info->start[i],
1201                         sector_erased(info, i) ? 'E' : ' ',
1202                         info->protect[i] ? "RO" : "  ");
1203 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1204                 printf ("  %08lX   %s ",
1205                         info->start[i],
1206                         info->protect[i] ? "RO" : "  ");
1207 #endif
1208         }
1209         putc ('\n');
1210         return;
1211 }
1212
1213 /*-----------------------------------------------------------------------
1214  * This is used in a few places in write_buf() to show programming
1215  * progress.  Making it a function is nasty because it needs to do side
1216  * effect updates to digit and dots.  Repeated code is nasty too, so
1217  * we define it once here.
1218  */
1219 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1220 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1221         if (flash_verbose) { \
1222                 dots -= dots_sub; \
1223                 if ((scale > 0) && (dots <= 0)) { \
1224                         if ((digit % 5) == 0) \
1225                                 printf ("%d", digit / 5); \
1226                         else \
1227                                 putc ('.'); \
1228                         digit--; \
1229                         dots += scale; \
1230                 } \
1231         }
1232 #else
1233 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1234 #endif
1235
1236 /*-----------------------------------------------------------------------
1237  * Copy memory to flash, returns:
1238  * 0 - OK
1239  * 1 - write timeout
1240  * 2 - Flash not erased
1241  */
1242 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1243 {
1244         ulong wp;
1245         uchar *p;
1246         int aln;
1247         cfiword_t cword;
1248         int i, rc;
1249 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1250         int buffered_size;
1251 #endif
1252 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1253         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1254         int scale = 0;
1255         int dots  = 0;
1256
1257         /*
1258          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1259          */
1260         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1261                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1262                         CONFIG_FLASH_SHOW_PROGRESS);
1263         }
1264 #endif
1265
1266         /* get lower aligned address */
1267         wp = (addr & ~(info->portwidth - 1));
1268
1269         /* handle unaligned start */
1270         if ((aln = addr - wp) != 0) {
1271                 cword.l = 0;
1272                 p = (uchar *)wp;
1273                 for (i = 0; i < aln; ++i)
1274                         flash_add_byte (info, &cword, flash_read8(p + i));
1275
1276                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1277                         flash_add_byte (info, &cword, *src++);
1278                         cnt--;
1279                 }
1280                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1281                         flash_add_byte (info, &cword, flash_read8(p + i));
1282
1283                 rc = flash_write_cfiword (info, wp, cword);
1284                 if (rc != 0)
1285                         return rc;
1286
1287                 wp += i;
1288                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1289         }
1290
1291         /* handle the aligned part */
1292 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1293         buffered_size = (info->portwidth / info->chipwidth);
1294         buffered_size *= info->buffer_size;
1295         while (cnt >= info->portwidth) {
1296                 /* prohibit buffer write when buffer_size is 1 */
1297                 if (info->buffer_size == 1) {
1298                         cword.l = 0;
1299                         for (i = 0; i < info->portwidth; i++)
1300                                 flash_add_byte (info, &cword, *src++);
1301                         if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1302                                 return rc;
1303                         wp += info->portwidth;
1304                         cnt -= info->portwidth;
1305                         continue;
1306                 }
1307
1308                 /* write buffer until next buffered_size aligned boundary */
1309                 i = buffered_size - (wp % buffered_size);
1310                 if (i > cnt)
1311                         i = cnt;
1312                 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1313                         return rc;
1314                 i -= i & (info->portwidth - 1);
1315                 wp += i;
1316                 src += i;
1317                 cnt -= i;
1318                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1319         }
1320 #else
1321         while (cnt >= info->portwidth) {
1322                 cword.l = 0;
1323                 for (i = 0; i < info->portwidth; i++) {
1324                         flash_add_byte (info, &cword, *src++);
1325                 }
1326                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1327                         return rc;
1328                 wp += info->portwidth;
1329                 cnt -= info->portwidth;
1330                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1331         }
1332 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1333
1334         if (cnt == 0) {
1335                 return (0);
1336         }
1337
1338         /*
1339          * handle unaligned tail bytes
1340          */
1341         cword.l = 0;
1342         p = (uchar *)wp;
1343         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1344                 flash_add_byte (info, &cword, *src++);
1345                 --cnt;
1346         }
1347         for (; i < info->portwidth; ++i)
1348                 flash_add_byte (info, &cword, flash_read8(p + i));
1349
1350         return flash_write_cfiword (info, wp, cword);
1351 }
1352
1353 /*-----------------------------------------------------------------------
1354  */
1355 #ifdef CONFIG_SYS_FLASH_PROTECTION
1356
1357 int flash_real_protect (flash_info_t * info, long sector, int prot)
1358 {
1359         int retcode = 0;
1360
1361         switch (info->vendor) {
1362                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1363                 case CFI_CMDSET_INTEL_STANDARD:
1364                 case CFI_CMDSET_INTEL_EXTENDED:
1365                         /*
1366                          * see errata called
1367                          * "Numonyx Axcell P33/P30 Specification Update" :)
1368                          */
1369                         flash_write_cmd (info, sector, 0, FLASH_CMD_READ_ID);
1370                         if (!flash_isequal (info, sector, FLASH_OFFSET_PROTECT,
1371                                             prot)) {
1372                                 /*
1373                                  * cmd must come before FLASH_CMD_PROTECT + 20us
1374                                  * Disable interrupts which might cause a timeout here.
1375                                  */
1376                                 int flag = disable_interrupts ();
1377                                 unsigned short cmd;
1378
1379                                 if (prot)
1380                                         cmd = FLASH_CMD_PROTECT_SET;
1381                                 else
1382                                         cmd = FLASH_CMD_PROTECT_CLEAR;
1383
1384                                 flash_write_cmd (info, sector, 0,
1385                                                   FLASH_CMD_PROTECT);
1386                                 flash_write_cmd (info, sector, 0, cmd);
1387                                 /* re-enable interrupts if necessary */
1388                                 if (flag)
1389                                         enable_interrupts ();
1390                         }
1391                         break;
1392                 case CFI_CMDSET_AMD_EXTENDED:
1393                 case CFI_CMDSET_AMD_STANDARD:
1394                         /* U-Boot only checks the first byte */
1395                         if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1396                                 if (prot) {
1397                                         flash_unlock_seq (info, 0);
1398                                         flash_write_cmd (info, 0,
1399                                                         info->addr_unlock1,
1400                                                         ATM_CMD_SOFTLOCK_START);
1401                                         flash_unlock_seq (info, 0);
1402                                         flash_write_cmd (info, sector, 0,
1403                                                         ATM_CMD_LOCK_SECT);
1404                                 } else {
1405                                         flash_write_cmd (info, 0,
1406                                                         info->addr_unlock1,
1407                                                         AMD_CMD_UNLOCK_START);
1408                                         if (info->device_id == ATM_ID_BV6416)
1409                                                 flash_write_cmd (info, sector,
1410                                                         0, ATM_CMD_UNLOCK_SECT);
1411                                 }
1412                         }
1413                         break;
1414 #ifdef CONFIG_FLASH_CFI_LEGACY
1415                 case CFI_CMDSET_AMD_LEGACY:
1416                         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1417                         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1418                         if (prot)
1419                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1420                         else
1421                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1422 #endif
1423         };
1424
1425         if ((retcode =
1426              flash_full_status_check (info, sector, info->erase_blk_tout,
1427                                       prot ? "protect" : "unprotect")) == 0) {
1428
1429                 info->protect[sector] = prot;
1430
1431                 /*
1432                  * On some of Intel's flash chips (marked via legacy_unlock)
1433                  * unprotect unprotects all locking.
1434                  */
1435                 if ((prot == 0) && (info->legacy_unlock)) {
1436                         flash_sect_t i;
1437
1438                         for (i = 0; i < info->sector_count; i++) {
1439                                 if (info->protect[i])
1440                                         flash_real_protect (info, i, 1);
1441                         }
1442                 }
1443         }
1444         return retcode;
1445 }
1446
1447 /*-----------------------------------------------------------------------
1448  * flash_read_user_serial - read the OneTimeProgramming cells
1449  */
1450 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1451                              int len)
1452 {
1453         uchar *src;
1454         uchar *dst;
1455
1456         dst = buffer;
1457         src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1458         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1459         memcpy (dst, src + offset, len);
1460         flash_write_cmd (info, 0, 0, info->cmd_reset);
1461         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1462 }
1463
1464 /*
1465  * flash_read_factory_serial - read the device Id from the protection area
1466  */
1467 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1468                                 int len)
1469 {
1470         uchar *src;
1471
1472         src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1473         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1474         memcpy (buffer, src + offset, len);
1475         flash_write_cmd (info, 0, 0, info->cmd_reset);
1476         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1477 }
1478
1479 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1480
1481 /*-----------------------------------------------------------------------
1482  * Reverse the order of the erase regions in the CFI QRY structure.
1483  * This is needed for chips that are either a) correctly detected as
1484  * top-boot, or b) buggy.
1485  */
1486 static void cfi_reverse_geometry(struct cfi_qry *qry)
1487 {
1488         unsigned int i, j;
1489         u32 tmp;
1490
1491         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1492                 tmp = qry->erase_region_info[i];
1493                 qry->erase_region_info[i] = qry->erase_region_info[j];
1494                 qry->erase_region_info[j] = tmp;
1495         }
1496 }
1497
1498 /*-----------------------------------------------------------------------
1499  * read jedec ids from device and set corresponding fields in info struct
1500  *
1501  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1502  *
1503  */
1504 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1505 {
1506         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1507         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1508         udelay(1000); /* some flash are slow to respond */
1509         info->manufacturer_id = flash_read_uchar (info,
1510                                         FLASH_OFFSET_MANUFACTURER_ID);
1511         info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1512                         flash_read_word (info, FLASH_OFFSET_DEVICE_ID) :
1513                         flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID);
1514         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1515 }
1516
1517 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1518 {
1519         info->cmd_reset = FLASH_CMD_RESET;
1520
1521         cmdset_intel_read_jedec_ids(info);
1522         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1523
1524 #ifdef CONFIG_SYS_FLASH_PROTECTION
1525         /* read legacy lock/unlock bit from intel flash */
1526         if (info->ext_addr) {
1527                 info->legacy_unlock = flash_read_uchar (info,
1528                                 info->ext_addr + 5) & 0x08;
1529         }
1530 #endif
1531
1532         return 0;
1533 }
1534
1535 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1536 {
1537         ushort bankId = 0;
1538         uchar  manuId;
1539
1540         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1541         flash_unlock_seq(info, 0);
1542         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1543         udelay(1000); /* some flash are slow to respond */
1544
1545         manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1546         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1547         while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1548                 bankId += 0x100;
1549                 manuId = flash_read_uchar (info,
1550                         bankId | FLASH_OFFSET_MANUFACTURER_ID);
1551         }
1552         info->manufacturer_id = manuId;
1553
1554         switch (info->chipwidth){
1555         case FLASH_CFI_8BIT:
1556                 info->device_id = flash_read_uchar (info,
1557                                                 FLASH_OFFSET_DEVICE_ID);
1558                 if (info->device_id == 0x7E) {
1559                         /* AMD 3-byte (expanded) device ids */
1560                         info->device_id2 = flash_read_uchar (info,
1561                                                 FLASH_OFFSET_DEVICE_ID2);
1562                         info->device_id2 <<= 8;
1563                         info->device_id2 |= flash_read_uchar (info,
1564                                                 FLASH_OFFSET_DEVICE_ID3);
1565                 }
1566                 break;
1567         case FLASH_CFI_16BIT:
1568                 info->device_id = flash_read_word (info,
1569                                                 FLASH_OFFSET_DEVICE_ID);
1570                 break;
1571         default:
1572                 break;
1573         }
1574         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1575 }
1576
1577 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1578 {
1579         info->cmd_reset = AMD_CMD_RESET;
1580
1581         cmdset_amd_read_jedec_ids(info);
1582         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1583
1584         return 0;
1585 }
1586
1587 #ifdef CONFIG_FLASH_CFI_LEGACY
1588 static void flash_read_jedec_ids (flash_info_t * info)
1589 {
1590         info->manufacturer_id = 0;
1591         info->device_id       = 0;
1592         info->device_id2      = 0;
1593
1594         switch (info->vendor) {
1595         case CFI_CMDSET_INTEL_PROG_REGIONS:
1596         case CFI_CMDSET_INTEL_STANDARD:
1597         case CFI_CMDSET_INTEL_EXTENDED:
1598                 cmdset_intel_read_jedec_ids(info);
1599                 break;
1600         case CFI_CMDSET_AMD_STANDARD:
1601         case CFI_CMDSET_AMD_EXTENDED:
1602                 cmdset_amd_read_jedec_ids(info);
1603                 break;
1604         default:
1605                 break;
1606         }
1607 }
1608
1609 /*-----------------------------------------------------------------------
1610  * Call board code to request info about non-CFI flash.
1611  * board_flash_get_legacy needs to fill in at least:
1612  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1613  */
1614 static int flash_detect_legacy(phys_addr_t base, int banknum)
1615 {
1616         flash_info_t *info = &flash_info[banknum];
1617
1618         if (board_flash_get_legacy(base, banknum, info)) {
1619                 /* board code may have filled info completely. If not, we
1620                    use JEDEC ID probing. */
1621                 if (!info->vendor) {
1622                         int modes[] = {
1623                                 CFI_CMDSET_AMD_STANDARD,
1624                                 CFI_CMDSET_INTEL_STANDARD
1625                         };
1626                         int i;
1627
1628                         for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1629                                 info->vendor = modes[i];
1630                                 info->start[0] =
1631                                         (ulong)map_physmem(base,
1632                                                            info->portwidth,
1633                                                            MAP_NOCACHE);
1634                                 if (info->portwidth == FLASH_CFI_8BIT
1635                                         && info->interface == FLASH_CFI_X8X16) {
1636                                         info->addr_unlock1 = 0x2AAA;
1637                                         info->addr_unlock2 = 0x5555;
1638                                 } else {
1639                                         info->addr_unlock1 = 0x5555;
1640                                         info->addr_unlock2 = 0x2AAA;
1641                                 }
1642                                 flash_read_jedec_ids(info);
1643                                 debug("JEDEC PROBE: ID %x %x %x\n",
1644                                                 info->manufacturer_id,
1645                                                 info->device_id,
1646                                                 info->device_id2);
1647                                 if (jedec_flash_match(info, info->start[0]))
1648                                         break;
1649                                 else
1650                                         unmap_physmem((void *)info->start[0],
1651                                                       MAP_NOCACHE);
1652                         }
1653                 }
1654
1655                 switch(info->vendor) {
1656                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1657                 case CFI_CMDSET_INTEL_STANDARD:
1658                 case CFI_CMDSET_INTEL_EXTENDED:
1659                         info->cmd_reset = FLASH_CMD_RESET;
1660                         break;
1661                 case CFI_CMDSET_AMD_STANDARD:
1662                 case CFI_CMDSET_AMD_EXTENDED:
1663                 case CFI_CMDSET_AMD_LEGACY:
1664                         info->cmd_reset = AMD_CMD_RESET;
1665                         break;
1666                 }
1667                 info->flash_id = FLASH_MAN_CFI;
1668                 return 1;
1669         }
1670         return 0; /* use CFI */
1671 }
1672 #else
1673 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1674 {
1675         return 0; /* use CFI */
1676 }
1677 #endif
1678
1679 /*-----------------------------------------------------------------------
1680  * detect if flash is compatible with the Common Flash Interface (CFI)
1681  * http://www.jedec.org/download/search/jesd68.pdf
1682  */
1683 static void flash_read_cfi (flash_info_t *info, void *buf,
1684                 unsigned int start, size_t len)
1685 {
1686         u8 *p = buf;
1687         unsigned int i;
1688
1689         for (i = 0; i < len; i++)
1690                 p[i] = flash_read_uchar(info, start + i);
1691 }
1692
1693 void __flash_cmd_reset(flash_info_t *info)
1694 {
1695         /*
1696          * We do not yet know what kind of commandset to use, so we issue
1697          * the reset command in both Intel and AMD variants, in the hope
1698          * that AMD flash roms ignore the Intel command.
1699          */
1700         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1701         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1702 }
1703 void flash_cmd_reset(flash_info_t *info)
1704         __attribute__((weak,alias("__flash_cmd_reset")));
1705
1706 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1707 {
1708         int cfi_offset;
1709
1710         /* Issue FLASH reset command */
1711         flash_cmd_reset(info);
1712
1713         for (cfi_offset=0;
1714              cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1715              cfi_offset++) {
1716                 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1717                                  FLASH_CMD_CFI);
1718                 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1719                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1720                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1721                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1722                                         sizeof(struct cfi_qry));
1723                         info->interface = le16_to_cpu(qry->interface_desc);
1724
1725                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1726                         debug ("device interface is %d\n",
1727                                info->interface);
1728                         debug ("found port %d chip %d ",
1729                                info->portwidth, info->chipwidth);
1730                         debug ("port %d bits chip %d bits\n",
1731                                info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1732                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1733
1734                         /* calculate command offsets as in the Linux driver */
1735                         info->addr_unlock1 = 0x555;
1736                         info->addr_unlock2 = 0x2aa;
1737
1738                         /*
1739                          * modify the unlock address if we are
1740                          * in compatibility mode
1741                          */
1742                         if (    /* x8/x16 in x8 mode */
1743                                 ((info->chipwidth == FLASH_CFI_BY8) &&
1744                                         (info->interface == FLASH_CFI_X8X16)) ||
1745                                 /* x16/x32 in x16 mode */
1746                                 ((info->chipwidth == FLASH_CFI_BY16) &&
1747                                         (info->interface == FLASH_CFI_X16X32)))
1748                         {
1749                                 info->addr_unlock1 = 0xaaa;
1750                                 info->addr_unlock2 = 0x555;
1751                         }
1752
1753                         info->name = "CFI conformant";
1754                         return 1;
1755                 }
1756         }
1757
1758         return 0;
1759 }
1760
1761 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1762 {
1763         debug ("flash detect cfi\n");
1764
1765         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1766              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1767                 for (info->chipwidth = FLASH_CFI_BY8;
1768                      info->chipwidth <= info->portwidth;
1769                      info->chipwidth <<= 1)
1770                         if (__flash_detect_cfi(info, qry))
1771                                 return 1;
1772         }
1773         debug ("not found\n");
1774         return 0;
1775 }
1776
1777 /*
1778  * Manufacturer-specific quirks. Add workarounds for geometry
1779  * reversal, etc. here.
1780  */
1781 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1782 {
1783         /* check if flash geometry needs reversal */
1784         if (qry->num_erase_regions > 1) {
1785                 /* reverse geometry if top boot part */
1786                 if (info->cfi_version < 0x3131) {
1787                         /* CFI < 1.1, try to guess from device id */
1788                         if ((info->device_id & 0x80) != 0)
1789                                 cfi_reverse_geometry(qry);
1790                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1791                         /* CFI >= 1.1, deduct from top/bottom flag */
1792                         /* note: ext_addr is valid since cfi_version > 0 */
1793                         cfi_reverse_geometry(qry);
1794                 }
1795         }
1796 }
1797
1798 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1799 {
1800         int reverse_geometry = 0;
1801
1802         /* Check the "top boot" bit in the PRI */
1803         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1804                 reverse_geometry = 1;
1805
1806         /* AT49BV6416(T) list the erase regions in the wrong order.
1807          * However, the device ID is identical with the non-broken
1808          * AT49BV642D they differ in the high byte.
1809          */
1810         if (info->device_id == 0xd6 || info->device_id == 0xd2)
1811                 reverse_geometry = !reverse_geometry;
1812
1813         if (reverse_geometry)
1814                 cfi_reverse_geometry(qry);
1815 }
1816
1817 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1818 {
1819         /* check if flash geometry needs reversal */
1820         if (qry->num_erase_regions > 1) {
1821                 /* reverse geometry if top boot part */
1822                 if (info->cfi_version < 0x3131) {
1823                         /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1824                         if (info->device_id == 0x22CA ||
1825                             info->device_id == 0x2256) {
1826                                 cfi_reverse_geometry(qry);
1827                         }
1828                 }
1829         }
1830 }
1831
1832 /*
1833  * The following code cannot be run from FLASH!
1834  *
1835  */
1836 ulong flash_get_size (phys_addr_t base, int banknum)
1837 {
1838         flash_info_t *info = &flash_info[banknum];
1839         int i, j;
1840         flash_sect_t sect_cnt;
1841         phys_addr_t sector;
1842         unsigned long tmp;
1843         int size_ratio;
1844         uchar num_erase_regions;
1845         int erase_region_size;
1846         int erase_region_count;
1847         struct cfi_qry qry;
1848
1849         memset(&qry, 0, sizeof(qry));
1850
1851         info->ext_addr = 0;
1852         info->cfi_version = 0;
1853 #ifdef CONFIG_SYS_FLASH_PROTECTION
1854         info->legacy_unlock = 0;
1855 #endif
1856
1857         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1858
1859         if (flash_detect_cfi (info, &qry)) {
1860                 info->vendor = le16_to_cpu(qry.p_id);
1861                 info->ext_addr = le16_to_cpu(qry.p_adr);
1862                 num_erase_regions = qry.num_erase_regions;
1863
1864                 if (info->ext_addr) {
1865                         info->cfi_version = (ushort) flash_read_uchar (info,
1866                                                 info->ext_addr + 3) << 8;
1867                         info->cfi_version |= (ushort) flash_read_uchar (info,
1868                                                 info->ext_addr + 4);
1869                 }
1870
1871 #ifdef DEBUG
1872                 flash_printqry (&qry);
1873 #endif
1874
1875                 switch (info->vendor) {
1876                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1877                 case CFI_CMDSET_INTEL_STANDARD:
1878                 case CFI_CMDSET_INTEL_EXTENDED:
1879                         cmdset_intel_init(info, &qry);
1880                         break;
1881                 case CFI_CMDSET_AMD_STANDARD:
1882                 case CFI_CMDSET_AMD_EXTENDED:
1883                         cmdset_amd_init(info, &qry);
1884                         break;
1885                 default:
1886                         printf("CFI: Unknown command set 0x%x\n",
1887                                         info->vendor);
1888                         /*
1889                          * Unfortunately, this means we don't know how
1890                          * to get the chip back to Read mode. Might
1891                          * as well try an Intel-style reset...
1892                          */
1893                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1894                         return 0;
1895                 }
1896
1897                 /* Do manufacturer-specific fixups */
1898                 switch (info->manufacturer_id) {
1899                 case 0x0001:
1900                         flash_fixup_amd(info, &qry);
1901                         break;
1902                 case 0x001f:
1903                         flash_fixup_atmel(info, &qry);
1904                         break;
1905                 case 0x0020:
1906                         flash_fixup_stm(info, &qry);
1907                         break;
1908                 }
1909
1910                 debug ("manufacturer is %d\n", info->vendor);
1911                 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1912                 debug ("device id is 0x%x\n", info->device_id);
1913                 debug ("device id2 is 0x%x\n", info->device_id2);
1914                 debug ("cfi version is 0x%04x\n", info->cfi_version);
1915
1916                 size_ratio = info->portwidth / info->chipwidth;
1917                 /* if the chip is x8/x16 reduce the ratio by half */
1918                 if ((info->interface == FLASH_CFI_X8X16)
1919                     && (info->chipwidth == FLASH_CFI_BY8)) {
1920                         size_ratio >>= 1;
1921                 }
1922                 debug ("size_ratio %d port %d bits chip %d bits\n",
1923                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1924                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1925                 debug ("found %d erase regions\n", num_erase_regions);
1926                 sect_cnt = 0;
1927                 sector = base;
1928                 for (i = 0; i < num_erase_regions; i++) {
1929                         if (i > NUM_ERASE_REGIONS) {
1930                                 printf ("%d erase regions found, only %d used\n",
1931                                         num_erase_regions, NUM_ERASE_REGIONS);
1932                                 break;
1933                         }
1934
1935                         tmp = le32_to_cpu(qry.erase_region_info[i]);
1936                         debug("erase region %u: 0x%08lx\n", i, tmp);
1937
1938                         erase_region_count = (tmp & 0xffff) + 1;
1939                         tmp >>= 16;
1940                         erase_region_size =
1941                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1942                         debug ("erase_region_count = %d erase_region_size = %d\n",
1943                                 erase_region_count, erase_region_size);
1944                         for (j = 0; j < erase_region_count; j++) {
1945                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1946                                         printf("ERROR: too many flash sectors\n");
1947                                         break;
1948                                 }
1949                                 info->start[sect_cnt] =
1950                                         (ulong)map_physmem(sector,
1951                                                            info->portwidth,
1952                                                            MAP_NOCACHE);
1953                                 sector += (erase_region_size * size_ratio);
1954
1955                                 /*
1956                                  * Only read protection status from
1957                                  * supported devices (intel...)
1958                                  */
1959                                 switch (info->vendor) {
1960                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1961                                 case CFI_CMDSET_INTEL_EXTENDED:
1962                                 case CFI_CMDSET_INTEL_STANDARD:
1963                                         info->protect[sect_cnt] =
1964                                                 flash_isset (info, sect_cnt,
1965                                                              FLASH_OFFSET_PROTECT,
1966                                                              FLASH_STATUS_PROTECT);
1967                                         break;
1968                                 default:
1969                                         /* default: not protected */
1970                                         info->protect[sect_cnt] = 0;
1971                                 }
1972
1973                                 sect_cnt++;
1974                         }
1975                 }
1976
1977                 info->sector_count = sect_cnt;
1978                 info->size = 1 << qry.dev_size;
1979                 /* multiply the size by the number of chips */
1980                 info->size *= size_ratio;
1981                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1982                 tmp = 1 << qry.block_erase_timeout_typ;
1983                 info->erase_blk_tout = tmp *
1984                         (1 << qry.block_erase_timeout_max);
1985                 tmp = (1 << qry.buf_write_timeout_typ) *
1986                         (1 << qry.buf_write_timeout_max);
1987
1988                 /* round up when converting to ms */
1989                 info->buffer_write_tout = (tmp + 999) / 1000;
1990                 tmp = (1 << qry.word_write_timeout_typ) *
1991                         (1 << qry.word_write_timeout_max);
1992                 /* round up when converting to ms */
1993                 info->write_tout = (tmp + 999) / 1000;
1994                 info->flash_id = FLASH_MAN_CFI;
1995                 if ((info->interface == FLASH_CFI_X8X16) &&
1996                     (info->chipwidth == FLASH_CFI_BY8)) {
1997                         /* XXX - Need to test on x8/x16 in parallel. */
1998                         info->portwidth >>= 1;
1999                 }
2000
2001                 flash_write_cmd (info, 0, 0, info->cmd_reset);
2002         }
2003
2004         return (info->size);
2005 }
2006
2007 void flash_set_verbose(uint v)
2008 {
2009         flash_verbose = v;
2010 }
2011
2012 /*-----------------------------------------------------------------------
2013  */
2014 unsigned long flash_init (void)
2015 {
2016         unsigned long size = 0;
2017         int i;
2018 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2019         struct apl_s {
2020                 ulong start;
2021                 ulong size;
2022         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2023 #endif
2024
2025 #ifdef CONFIG_SYS_FLASH_PROTECTION
2026         /* read environment from EEPROM */
2027         char s[64];
2028         getenv_f("unlock", s, sizeof(s));
2029 #endif
2030
2031         /* Init: no FLASHes known */
2032         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2033                 flash_info[i].flash_id = FLASH_UNKNOWN;
2034
2035                 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2036                         flash_get_size(cfi_flash_bank_addr(i), i);
2037                 size += flash_info[i].size;
2038                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2039 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2040                         printf ("## Unknown FLASH on Bank %d "
2041                                 "- Size = 0x%08lx = %ld MB\n",
2042                                 i+1, flash_info[i].size,
2043                                 flash_info[i].size << 20);
2044 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2045                 }
2046 #ifdef CONFIG_SYS_FLASH_PROTECTION
2047                 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
2048                         /*
2049                          * Only the U-Boot image and it's environment
2050                          * is protected, all other sectors are
2051                          * unprotected (unlocked) if flash hardware
2052                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2053                          * and the environment variable "unlock" is
2054                          * set to "yes".
2055                          */
2056                         if (flash_info[i].legacy_unlock) {
2057                                 int k;
2058
2059                                 /*
2060                                  * Disable legacy_unlock temporarily,
2061                                  * since flash_real_protect would
2062                                  * relock all other sectors again
2063                                  * otherwise.
2064                                  */
2065                                 flash_info[i].legacy_unlock = 0;
2066
2067                                 /*
2068                                  * Legacy unlocking (e.g. Intel J3) ->
2069                                  * unlock only one sector. This will
2070                                  * unlock all sectors.
2071                                  */
2072                                 flash_real_protect (&flash_info[i], 0, 0);
2073
2074                                 flash_info[i].legacy_unlock = 1;
2075
2076                                 /*
2077                                  * Manually mark other sectors as
2078                                  * unlocked (unprotected)
2079                                  */
2080                                 for (k = 1; k < flash_info[i].sector_count; k++)
2081                                         flash_info[i].protect[k] = 0;
2082                         } else {
2083                                 /*
2084                                  * No legancy unlocking -> unlock all sectors
2085                                  */
2086                                 flash_protect (FLAG_PROTECT_CLEAR,
2087                                                flash_info[i].start[0],
2088                                                flash_info[i].start[0]
2089                                                + flash_info[i].size - 1,
2090                                                &flash_info[i]);
2091                         }
2092                 }
2093 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2094         }
2095
2096         /* Monitor protection ON by default */
2097 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2098         (!defined(CONFIG_MONITOR_IS_IN_RAM))
2099         flash_protect (FLAG_PROTECT_SET,
2100                        CONFIG_SYS_MONITOR_BASE,
2101                        CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
2102                        flash_get_info(CONFIG_SYS_MONITOR_BASE));
2103 #endif
2104
2105         /* Environment protection ON by default */
2106 #ifdef CONFIG_ENV_IS_IN_FLASH
2107         flash_protect (FLAG_PROTECT_SET,
2108                        CONFIG_ENV_ADDR,
2109                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2110                        flash_get_info(CONFIG_ENV_ADDR));
2111 #endif
2112
2113         /* Redundant environment protection ON by default */
2114 #ifdef CONFIG_ENV_ADDR_REDUND
2115         flash_protect (FLAG_PROTECT_SET,
2116                        CONFIG_ENV_ADDR_REDUND,
2117                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2118                        flash_get_info(CONFIG_ENV_ADDR_REDUND));
2119 #endif
2120
2121 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2122         for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2123                 debug("autoprotecting from %08x to %08x\n",
2124                       apl[i].start, apl[i].start + apl[i].size - 1);
2125                 flash_protect (FLAG_PROTECT_SET,
2126                                apl[i].start,
2127                                apl[i].start + apl[i].size - 1,
2128                                flash_get_info(apl[i].start));
2129         }
2130 #endif
2131
2132 #ifdef CONFIG_FLASH_CFI_MTD
2133         cfi_mtd_init();
2134 #endif
2135
2136         return (size);
2137 }