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 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 = 0;
 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 i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : 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         start = get_timer (0);
 548         while (flash_is_busy (info, sector)) {
 549                 if (get_timer (start) > tout) {
 550                         printf ("Flash %s timeout at address %lx data %lx\n",
 551                                 prompt, info->start[sector],
 552                                 flash_read_long (info, sector, 0));
 553                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 554                         return ERR_TIMOUT;
 555                 }
 556                 udelay (1);             /* also triggers watchdog */
 557         }
 558         return ERR_OK;
 559 }
 560
 561 /*-----------------------------------------------------------------------
 562  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 563  * do a full status check.
 564  *
 565  * This routine sets the flash to read-array mode.
 566  */
 567 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 568                                     ulong tout, char *prompt)
 569 {
 570         int retcode;
 571
 572         retcode = flash_status_check (info, sector, tout, prompt);
 573         switch (info->vendor) {
 574         case CFI_CMDSET_INTEL_PROG_REGIONS:
 575         case CFI_CMDSET_INTEL_EXTENDED:
 576         case CFI_CMDSET_INTEL_STANDARD:
 577                 if ((retcode != ERR_OK)
 578                     && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 579                         retcode = ERR_INVAL;
 580                         printf ("Flash %s error at address %lx\n", prompt,
 581                                 info->start[sector]);
 582                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
 583                                          FLASH_STATUS_PSLBS)) {
 584                                 puts ("Command Sequence Error.\n");
 585                         } else if (flash_isset (info, sector, 0,
 586                                                 FLASH_STATUS_ECLBS)) {
 587                                 puts ("Block Erase Error.\n");
 588                                 retcode = ERR_NOT_ERASED;
 589                         } else if (flash_isset (info, sector, 0,
 590                                                 FLASH_STATUS_PSLBS)) {
 591                                 puts ("Locking Error\n");
 592                         }
 593                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 594                                 puts ("Block locked.\n");
 595                                 retcode = ERR_PROTECTED;
 596                         }
 597                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 598                                 puts ("Vpp Low Error.\n");
 599                 }
 600                 flash_write_cmd (info, sector, 0, info->cmd_reset);
 601                 break;
 602         default:
 603                 break;
 604         }
 605         return retcode;
 606 }
 607
 608 /*-----------------------------------------------------------------------
 609  */
 610 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 611 {
 612 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 613         unsigned short  w;
 614         unsigned int    l;
 615         unsigned long long ll;
 616 #endif
 617
 618         switch (info->portwidth) {
 619         case FLASH_CFI_8BIT:
 620                 cword->c = c;
 621                 break;
 622         case FLASH_CFI_16BIT:
 623 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 624                 w = c;
 625                 w <<= 8;
 626                 cword->w = (cword->w >> 8) | w;
 627 #else
 628                 cword->w = (cword->w << 8) | c;
 629 #endif
 630                 break;
 631         case FLASH_CFI_32BIT:
 632 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 633                 l = c;
 634                 l <<= 24;
 635                 cword->l = (cword->l >> 8) | l;
 636 #else
 637                 cword->l = (cword->l << 8) | c;
 638 #endif
 639                 break;
 640         case FLASH_CFI_64BIT:
 641 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 642                 ll = c;
 643                 ll <<= 56;
 644                 cword->ll = (cword->ll >> 8) | ll;
 645 #else
 646                 cword->ll = (cword->ll << 8) | c;
 647 #endif
 648                 break;
 649         }
 650 }
 651
 652 /*
 653  * Loop through the sector table starting from the previously found sector.
 654  * Searches forwards or backwards, dependent on the passed address.
 655  */
 656 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
 657 {
 658         static flash_sect_t saved_sector = 0; /* previously found sector */
 659         flash_sect_t sector = saved_sector;
 660
 661         while ((info->start[sector] < addr)
 662                         && (sector < info->sector_count - 1))
 663                 sector++;
 664         while ((info->start[sector] > addr) && (sector > 0))
 665                 /*
 666                  * also decrements the sector in case of an overshot
 667                  * in the first loop
 668                  */
 669                 sector--;
 670
 671         saved_sector = sector;
 672         return sector;
 673 }
 674
 675 /*-----------------------------------------------------------------------
 676  */
 677 static int flash_write_cfiword (flash_info_t * info, ulong dest,
 678                                 cfiword_t cword)
 679 {
 680         void *dstaddr = (void *)dest;
 681         int flag;
 682         flash_sect_t sect = 0;
 683         char sect_found = 0;
 684
 685         /* Check if Flash is (sufficiently) erased */
 686         switch (info->portwidth) {
 687         case FLASH_CFI_8BIT:
 688                 flag = ((flash_read8(dstaddr) & cword.c) == cword.c);
 689                 break;
 690         case FLASH_CFI_16BIT:
 691                 flag = ((flash_read16(dstaddr) & cword.w) == cword.w);
 692                 break;
 693         case FLASH_CFI_32BIT:
 694                 flag = ((flash_read32(dstaddr) & cword.l) == cword.l);
 695                 break;
 696         case FLASH_CFI_64BIT:
 697                 flag = ((flash_read64(dstaddr) & cword.ll) == cword.ll);
 698                 break;
 699         default:
 700                 flag = 0;
 701                 break;
 702         }
 703         if (!flag)
 704                 return ERR_NOT_ERASED;
 705
 706         /* Disable interrupts which might cause a timeout here */
 707         flag = disable_interrupts ();
 708
 709         switch (info->vendor) {
 710         case CFI_CMDSET_INTEL_PROG_REGIONS:
 711         case CFI_CMDSET_INTEL_EXTENDED:
 712         case CFI_CMDSET_INTEL_STANDARD:
 713                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 714                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
 715                 break;
 716         case CFI_CMDSET_AMD_EXTENDED:
 717         case CFI_CMDSET_AMD_STANDARD:
 718                 sect = find_sector(info, dest);
 719                 flash_unlock_seq (info, sect);
 720                 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 721                 sect_found = 1;
 722                 break;
 723 #ifdef CONFIG_FLASH_CFI_LEGACY
 724         case CFI_CMDSET_AMD_LEGACY:
 725                 sect = find_sector(info, dest);
 726                 flash_unlock_seq (info, 0);
 727                 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 728                 sect_found = 1;
 729                 break;
 730 #endif
 731         }
 732
 733         switch (info->portwidth) {
 734         case FLASH_CFI_8BIT:
 735                 flash_write8(cword.c, dstaddr);
 736                 break;
 737         case FLASH_CFI_16BIT:
 738                 flash_write16(cword.w, dstaddr);
 739                 break;
 740         case FLASH_CFI_32BIT:
 741                 flash_write32(cword.l, dstaddr);
 742                 break;
 743         case FLASH_CFI_64BIT:
 744                 flash_write64(cword.ll, dstaddr);
 745                 break;
 746         }
 747
 748         /* re-enable interrupts if necessary */
 749         if (flag)
 750                 enable_interrupts ();
 751
 752         if (!sect_found)
 753                 sect = find_sector (info, dest);
 754
 755         return flash_full_status_check (info, sect, info->write_tout, "write");
 756 }
 757
 758 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 759
 760 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 761                                   int len)
 762 {
 763         flash_sect_t sector;
 764         int cnt;
 765         int retcode;
 766         void *src = cp;
 767         void *dst = (void *)dest;
 768         void *dst2 = dst;
 769         int flag = 0;
 770         uint offset = 0;
 771         unsigned int shift;
 772         uchar write_cmd;
 773
 774         switch (info->portwidth) {
 775         case FLASH_CFI_8BIT:
 776                 shift = 0;
 777                 break;
 778         case FLASH_CFI_16BIT:
 779                 shift = 1;
 780                 break;
 781         case FLASH_CFI_32BIT:
 782                 shift = 2;
 783                 break;
 784         case FLASH_CFI_64BIT:
 785                 shift = 3;
 786                 break;
 787         default:
 788                 retcode = ERR_INVAL;
 789                 goto out_unmap;
 790         }
 791
 792         cnt = len >> shift;
 793
 794         while ((cnt-- > 0) && (flag == 0)) {
 795                 switch (info->portwidth) {
 796                 case FLASH_CFI_8BIT:
 797                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 798                                 flash_read8(src));
 799                         src += 1, dst2 += 1;
 800                         break;
 801                 case FLASH_CFI_16BIT:
 802                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 803                                 flash_read16(src));
 804                         src += 2, dst2 += 2;
 805                         break;
 806                 case FLASH_CFI_32BIT:
 807                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 808                                 flash_read32(src));
 809                         src += 4, dst2 += 4;
 810                         break;
 811                 case FLASH_CFI_64BIT:
 812                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 813                                 flash_read64(src));
 814                         src += 8, dst2 += 8;
 815                         break;
 816                 }
 817         }
 818         if (!flag) {
 819                 retcode = ERR_NOT_ERASED;
 820                 goto out_unmap;
 821         }
 822
 823         src = cp;
 824         sector = find_sector (info, dest);
 825
 826         switch (info->vendor) {
 827         case CFI_CMDSET_INTEL_PROG_REGIONS:
 828         case CFI_CMDSET_INTEL_STANDARD:
 829         case CFI_CMDSET_INTEL_EXTENDED:
 830                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 831                                         FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
 832                 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 833                 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
 834                 flash_write_cmd (info, sector, 0, write_cmd);
 835                 retcode = flash_status_check (info, sector,
 836                                               info->buffer_write_tout,
 837                                               "write to buffer");
 838                 if (retcode == ERR_OK) {
 839                         /* reduce the number of loops by the width of
 840                          * the port */
 841                         cnt = len >> shift;
 842                         flash_write_cmd (info, sector, 0, cnt - 1);
 843                         while (cnt-- > 0) {
 844                                 switch (info->portwidth) {
 845                                 case FLASH_CFI_8BIT:
 846                                         flash_write8(flash_read8(src), dst);
 847                                         src += 1, dst += 1;
 848                                         break;
 849                                 case FLASH_CFI_16BIT:
 850                                         flash_write16(flash_read16(src), dst);
 851                                         src += 2, dst += 2;
 852                                         break;
 853                                 case FLASH_CFI_32BIT:
 854                                         flash_write32(flash_read32(src), dst);
 855                                         src += 4, dst += 4;
 856                                         break;
 857                                 case FLASH_CFI_64BIT:
 858                                         flash_write64(flash_read64(src), dst);
 859                                         src += 8, dst += 8;
 860                                         break;
 861                                 default:
 862                                         retcode = ERR_INVAL;
 863                                         goto out_unmap;
 864                                 }
 865                         }
 866                         flash_write_cmd (info, sector, 0,
 867                                          FLASH_CMD_WRITE_BUFFER_CONFIRM);
 868                         retcode = flash_full_status_check (
 869                                 info, sector, info->buffer_write_tout,
 870                                 "buffer write");
 871                 }
 872
 873                 break;
 874
 875         case CFI_CMDSET_AMD_STANDARD:
 876         case CFI_CMDSET_AMD_EXTENDED:
 877                 flash_unlock_seq(info,0);
 878
 879 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 880                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 881 #endif
 882                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
 883                 cnt = len >> shift;
 884                 flash_write_cmd(info, sector, offset, cnt - 1);
 885
 886                 switch (info->portwidth) {
 887                 case FLASH_CFI_8BIT:
 888                         while (cnt-- > 0) {
 889                                 flash_write8(flash_read8(src), dst);
 890                                 src += 1, dst += 1;
 891                         }
 892                         break;
 893                 case FLASH_CFI_16BIT:
 894                         while (cnt-- > 0) {
 895                                 flash_write16(flash_read16(src), dst);
 896                                 src += 2, dst += 2;
 897                         }
 898                         break;
 899                 case FLASH_CFI_32BIT:
 900                         while (cnt-- > 0) {
 901                                 flash_write32(flash_read32(src), dst);
 902                                 src += 4, dst += 4;
 903                         }
 904                         break;
 905                 case FLASH_CFI_64BIT:
 906                         while (cnt-- > 0) {
 907                                 flash_write64(flash_read64(src), dst);
 908                                 src += 8, dst += 8;
 909                         }
 910                         break;
 911                 default:
 912                         retcode = ERR_INVAL;
 913                         goto out_unmap;
 914                 }
 915
 916                 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
 917                 retcode = flash_full_status_check (info, sector,
 918                                                    info->buffer_write_tout,
 919                                                    "buffer write");
 920                 break;
 921
 922         default:
 923                 debug ("Unknown Command Set\n");
 924                 retcode = ERR_INVAL;
 925                 break;
 926         }
 927
 928 out_unmap:
 929         return retcode;
 930 }
 931 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
 932
 933
 934 /*-----------------------------------------------------------------------
 935  */
 936 int flash_erase (flash_info_t * info, int s_first, int s_last)
 937 {
 938         int rcode = 0;
 939         int prot;
 940         flash_sect_t sect;
 941
 942         if (info->flash_id != FLASH_MAN_CFI) {
 943                 puts ("Can't erase unknown flash type - aborted\n");
 944                 return 1;
 945         }
 946         if ((s_first < 0) || (s_first > s_last)) {
 947                 puts ("- no sectors to erase\n");
 948                 return 1;
 949         }
 950
 951         prot = 0;
 952         for (sect = s_first; sect <= s_last; ++sect) {
 953                 if (info->protect[sect]) {
 954                         prot++;
 955                 }
 956         }
 957         if (prot) {
 958                 printf ("- Warning: %d protected sectors will not be erased!\n",
 959                         prot);
 960         } else if (flash_verbose) {
 961                 putc ('\n');
 962         }
 963
 964
 965         for (sect = s_first; sect <= s_last; sect++) {
 966                 if (info->protect[sect] == 0) { /* not protected */
 967                         switch (info->vendor) {
 968                         case CFI_CMDSET_INTEL_PROG_REGIONS:
 969                         case CFI_CMDSET_INTEL_STANDARD:
 970                         case CFI_CMDSET_INTEL_EXTENDED:
 971                                 flash_write_cmd (info, sect, 0,
 972                                                  FLASH_CMD_CLEAR_STATUS);
 973                                 flash_write_cmd (info, sect, 0,
 974                                                  FLASH_CMD_BLOCK_ERASE);
 975                                 flash_write_cmd (info, sect, 0,
 976                                                  FLASH_CMD_ERASE_CONFIRM);
 977                                 break;
 978                         case CFI_CMDSET_AMD_STANDARD:
 979                         case CFI_CMDSET_AMD_EXTENDED:
 980                                 flash_unlock_seq (info, sect);
 981                                 flash_write_cmd (info, sect,
 982                                                 info->addr_unlock1,
 983                                                 AMD_CMD_ERASE_START);
 984                                 flash_unlock_seq (info, sect);
 985                                 flash_write_cmd (info, sect, 0,
 986                                                  AMD_CMD_ERASE_SECTOR);
 987                                 break;
 988 #ifdef CONFIG_FLASH_CFI_LEGACY
 989                         case CFI_CMDSET_AMD_LEGACY:
 990                                 flash_unlock_seq (info, 0);
 991                                 flash_write_cmd (info, 0, info->addr_unlock1,
 992                                                 AMD_CMD_ERASE_START);
 993                                 flash_unlock_seq (info, 0);
 994                                 flash_write_cmd (info, sect, 0,
 995                                                 AMD_CMD_ERASE_SECTOR);
 996                                 break;
 997 #endif
 998                         default:
 999                                 debug ("Unkown flash vendor %d\n",
1000                                        info->vendor);
1001                                 break;
1002                         }
1003
1004                         if (flash_full_status_check
1005                             (info, sect, info->erase_blk_tout, "erase")) {
1006                                 rcode = 1;
1007                         } else if (flash_verbose)
1008                                 putc ('.');
1009                 }
1010         }
1011
1012         if (flash_verbose)
1013                 puts (" done\n");
1014
1015         return rcode;
1016 }
1017
1018 /*-----------------------------------------------------------------------
1019  */
1020 void flash_print_info (flash_info_t * info)
1021 {
1022         int i;
1023
1024         if (info->flash_id != FLASH_MAN_CFI) {
1025                 puts ("missing or unknown FLASH type\n");
1026                 return;
1027         }
1028
1029         printf ("%s FLASH (%d x %d)",
1030                 info->name,
1031                 (info->portwidth << 3), (info->chipwidth << 3));
1032         if (info->size < 1024*1024)
1033                 printf ("  Size: %ld kB in %d Sectors\n",
1034                         info->size >> 10, info->sector_count);
1035         else
1036                 printf ("  Size: %ld MB in %d Sectors\n",
1037                         info->size >> 20, info->sector_count);
1038         printf ("  ");
1039         switch (info->vendor) {
1040                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1041                         printf ("Intel Prog Regions");
1042                         break;
1043                 case CFI_CMDSET_INTEL_STANDARD:
1044                         printf ("Intel Standard");
1045                         break;
1046                 case CFI_CMDSET_INTEL_EXTENDED:
1047                         printf ("Intel Extended");
1048                         break;
1049                 case CFI_CMDSET_AMD_STANDARD:
1050                         printf ("AMD Standard");
1051                         break;
1052                 case CFI_CMDSET_AMD_EXTENDED:
1053                         printf ("AMD Extended");
1054                         break;
1055 #ifdef CONFIG_FLASH_CFI_LEGACY
1056                 case CFI_CMDSET_AMD_LEGACY:
1057                         printf ("AMD Legacy");
1058                         break;
1059 #endif
1060                 default:
1061                         printf ("Unknown (%d)", info->vendor);
1062                         break;
1063         }
1064         printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
1065                 info->manufacturer_id, info->device_id);
1066         if (info->device_id == 0x7E) {
1067                 printf("%04X", info->device_id2);
1068         }
1069         printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1070                 info->erase_blk_tout,
1071                 info->write_tout);
1072         if (info->buffer_size > 1) {
1073                 printf ("  Buffer write timeout: %ld ms, "
1074                         "buffer size: %d bytes\n",
1075                 info->buffer_write_tout,
1076                 info->buffer_size);
1077         }
1078
1079         puts ("\n  Sector Start Addresses:");
1080         for (i = 0; i < info->sector_count; ++i) {
1081                 if ((i % 5) == 0)
1082                         printf ("\n");
1083 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1084                 int k;
1085                 int size;
1086                 int erased;
1087                 volatile unsigned long *flash;
1088
1089                 /*
1090                  * Check if whole sector is erased
1091                  */
1092                 size = flash_sector_size(info, i);
1093                 erased = 1;
1094                 flash = (volatile unsigned long *) info->start[i];
1095                 size = size >> 2;       /* divide by 4 for longword access */
1096                 for (k = 0; k < size; k++) {
1097                         if (*flash++ != 0xffffffff) {
1098                                 erased = 0;
1099                                 break;
1100                         }
1101                 }
1102
1103                 /* print empty and read-only info */
1104                 printf ("  %08lX %c %s ",
1105                         info->start[i],
1106                         erased ? 'E' : ' ',
1107                         info->protect[i] ? "RO" : "  ");
1108 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1109                 printf ("  %08lX   %s ",
1110                         info->start[i],
1111                         info->protect[i] ? "RO" : "  ");
1112 #endif
1113         }
1114         putc ('\n');
1115         return;
1116 }
1117
1118 /*-----------------------------------------------------------------------
1119  * This is used in a few places in write_buf() to show programming
1120  * progress.  Making it a function is nasty because it needs to do side
1121  * effect updates to digit and dots.  Repeated code is nasty too, so
1122  * we define it once here.
1123  */
1124 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1125 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1126         if (flash_verbose) { \
1127                 dots -= dots_sub; \
1128                 if ((scale > 0) && (dots <= 0)) { \
1129                         if ((digit % 5) == 0) \
1130                                 printf ("%d", digit / 5); \
1131                         else \
1132                                 putc ('.'); \
1133                         digit--; \
1134                         dots += scale; \
1135                 } \
1136         }
1137 #else
1138 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1139 #endif
1140
1141 /*-----------------------------------------------------------------------
1142  * Copy memory to flash, returns:
1143  * 0 - OK
1144  * 1 - write timeout
1145  * 2 - Flash not erased
1146  */
1147 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1148 {
1149         ulong wp;
1150         uchar *p;
1151         int aln;
1152         cfiword_t cword;
1153         int i, rc;
1154 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1155         int buffered_size;
1156 #endif
1157 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1158         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1159         int scale = 0;
1160         int dots  = 0;
1161
1162         /*
1163          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1164          */
1165         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1166                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1167                         CONFIG_FLASH_SHOW_PROGRESS);
1168         }
1169 #endif
1170
1171         /* get lower aligned address */
1172         wp = (addr & ~(info->portwidth - 1));
1173
1174         /* handle unaligned start */
1175         if ((aln = addr - wp) != 0) {
1176                 cword.l = 0;
1177                 p = (uchar *)wp;
1178                 for (i = 0; i < aln; ++i)
1179                         flash_add_byte (info, &cword, flash_read8(p + i));
1180
1181                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1182                         flash_add_byte (info, &cword, *src++);
1183                         cnt--;
1184                 }
1185                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1186                         flash_add_byte (info, &cword, flash_read8(p + i));
1187
1188                 rc = flash_write_cfiword (info, wp, cword);
1189                 if (rc != 0)
1190                         return rc;
1191
1192                 wp += i;
1193                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1194         }
1195
1196         /* handle the aligned part */
1197 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1198         buffered_size = (info->portwidth / info->chipwidth);
1199         buffered_size *= info->buffer_size;
1200         while (cnt >= info->portwidth) {
1201                 /* prohibit buffer write when buffer_size is 1 */
1202                 if (info->buffer_size == 1) {
1203                         cword.l = 0;
1204                         for (i = 0; i < info->portwidth; i++)
1205                                 flash_add_byte (info, &cword, *src++);
1206                         if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1207                                 return rc;
1208                         wp += info->portwidth;
1209                         cnt -= info->portwidth;
1210                         continue;
1211                 }
1212
1213                 /* write buffer until next buffered_size aligned boundary */
1214                 i = buffered_size - (wp % buffered_size);
1215                 if (i > cnt)
1216                         i = cnt;
1217                 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1218                         return rc;
1219                 i -= i & (info->portwidth - 1);
1220                 wp += i;
1221                 src += i;
1222                 cnt -= i;
1223                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1224         }
1225 #else
1226         while (cnt >= info->portwidth) {
1227                 cword.l = 0;
1228                 for (i = 0; i < info->portwidth; i++) {
1229                         flash_add_byte (info, &cword, *src++);
1230                 }
1231                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1232                         return rc;
1233                 wp += info->portwidth;
1234                 cnt -= info->portwidth;
1235                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1236         }
1237 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1238
1239         if (cnt == 0) {
1240                 return (0);
1241         }
1242
1243         /*
1244          * handle unaligned tail bytes
1245          */
1246         cword.l = 0;
1247         p = (uchar *)wp;
1248         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1249                 flash_add_byte (info, &cword, *src++);
1250                 --cnt;
1251         }
1252         for (; i < info->portwidth; ++i)
1253                 flash_add_byte (info, &cword, flash_read8(p + i));
1254
1255         return flash_write_cfiword (info, wp, cword);
1256 }
1257
1258 /*-----------------------------------------------------------------------
1259  */
1260 #ifdef CONFIG_SYS_FLASH_PROTECTION
1261
1262 int flash_real_protect (flash_info_t * info, long sector, int prot)
1263 {
1264         int retcode = 0;
1265
1266         switch (info->vendor) {
1267                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1268                 case CFI_CMDSET_INTEL_STANDARD:
1269                 case CFI_CMDSET_INTEL_EXTENDED:
1270                         flash_write_cmd (info, sector, 0,
1271                                          FLASH_CMD_CLEAR_STATUS);
1272                         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1273                         if (prot)
1274                                 flash_write_cmd (info, sector, 0,
1275                                         FLASH_CMD_PROTECT_SET);
1276                         else
1277                                 flash_write_cmd (info, sector, 0,
1278                                         FLASH_CMD_PROTECT_CLEAR);
1279                         break;
1280                 case CFI_CMDSET_AMD_EXTENDED:
1281                 case CFI_CMDSET_AMD_STANDARD:
1282                         /* U-Boot only checks the first byte */
1283                         if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
1284                                 if (prot) {
1285                                         flash_unlock_seq (info, 0);
1286                                         flash_write_cmd (info, 0,
1287                                                         info->addr_unlock1,
1288                                                         ATM_CMD_SOFTLOCK_START);
1289                                         flash_unlock_seq (info, 0);
1290                                         flash_write_cmd (info, sector, 0,
1291                                                         ATM_CMD_LOCK_SECT);
1292                                 } else {
1293                                         flash_write_cmd (info, 0,
1294                                                         info->addr_unlock1,
1295                                                         AMD_CMD_UNLOCK_START);
1296                                         if (info->device_id == ATM_ID_BV6416)
1297                                                 flash_write_cmd (info, sector,
1298                                                         0, ATM_CMD_UNLOCK_SECT);
1299                                 }
1300                         }
1301                         break;
1302 #ifdef CONFIG_FLASH_CFI_LEGACY
1303                 case CFI_CMDSET_AMD_LEGACY:
1304                         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1305                         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1306                         if (prot)
1307                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1308                         else
1309                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1310 #endif
1311         };
1312
1313         if ((retcode =
1314              flash_full_status_check (info, sector, info->erase_blk_tout,
1315                                       prot ? "protect" : "unprotect")) == 0) {
1316
1317                 info->protect[sector] = prot;
1318
1319                 /*
1320                  * On some of Intel's flash chips (marked via legacy_unlock)
1321                  * unprotect unprotects all locking.
1322                  */
1323                 if ((prot == 0) && (info->legacy_unlock)) {
1324                         flash_sect_t i;
1325
1326                         for (i = 0; i < info->sector_count; i++) {
1327                                 if (info->protect[i])
1328                                         flash_real_protect (info, i, 1);
1329                         }
1330                 }
1331         }
1332         return retcode;
1333 }
1334
1335 /*-----------------------------------------------------------------------
1336  * flash_read_user_serial - read the OneTimeProgramming cells
1337  */
1338 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1339                              int len)
1340 {
1341         uchar *src;
1342         uchar *dst;
1343
1344         dst = buffer;
1345         src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1346         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1347         memcpy (dst, src + offset, len);
1348         flash_write_cmd (info, 0, 0, info->cmd_reset);
1349         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1350 }
1351
1352 /*
1353  * flash_read_factory_serial - read the device Id from the protection area
1354  */
1355 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1356                                 int len)
1357 {
1358         uchar *src;
1359
1360         src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1361         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1362         memcpy (buffer, src + offset, len);
1363         flash_write_cmd (info, 0, 0, info->cmd_reset);
1364         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1365 }
1366
1367 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1368
1369 /*-----------------------------------------------------------------------
1370  * Reverse the order of the erase regions in the CFI QRY structure.
1371  * This is needed for chips that are either a) correctly detected as
1372  * top-boot, or b) buggy.
1373  */
1374 static void cfi_reverse_geometry(struct cfi_qry *qry)
1375 {
1376         unsigned int i, j;
1377         u32 tmp;
1378
1379         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1380                 tmp = qry->erase_region_info[i];
1381                 qry->erase_region_info[i] = qry->erase_region_info[j];
1382                 qry->erase_region_info[j] = tmp;
1383         }
1384 }
1385
1386 /*-----------------------------------------------------------------------
1387  * read jedec ids from device and set corresponding fields in info struct
1388  *
1389  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1390  *
1391  */
1392 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1393 {
1394         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1395         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1396         udelay(1000); /* some flash are slow to respond */
1397         info->manufacturer_id = flash_read_uchar (info,
1398                                         FLASH_OFFSET_MANUFACTURER_ID);
1399         info->device_id = flash_read_uchar (info,
1400                                         FLASH_OFFSET_DEVICE_ID);
1401         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1402 }
1403
1404 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1405 {
1406         info->cmd_reset = FLASH_CMD_RESET;
1407
1408         cmdset_intel_read_jedec_ids(info);
1409         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1410
1411 #ifdef CONFIG_SYS_FLASH_PROTECTION
1412         /* read legacy lock/unlock bit from intel flash */
1413         if (info->ext_addr) {
1414                 info->legacy_unlock = flash_read_uchar (info,
1415                                 info->ext_addr + 5) & 0x08;
1416         }
1417 #endif
1418
1419         return 0;
1420 }
1421
1422 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1423 {
1424         ushort bankId = 0;
1425         uchar  manuId;
1426
1427         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1428         flash_unlock_seq(info, 0);
1429         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1430         udelay(1000); /* some flash are slow to respond */
1431
1432         manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1433         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1434         while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1435                 bankId += 0x100;
1436                 manuId = flash_read_uchar (info,
1437                         bankId | FLASH_OFFSET_MANUFACTURER_ID);
1438         }
1439         info->manufacturer_id = manuId;
1440
1441         switch (info->chipwidth){
1442         case FLASH_CFI_8BIT:
1443                 info->device_id = flash_read_uchar (info,
1444                                                 FLASH_OFFSET_DEVICE_ID);
1445                 if (info->device_id == 0x7E) {
1446                         /* AMD 3-byte (expanded) device ids */
1447                         info->device_id2 = flash_read_uchar (info,
1448                                                 FLASH_OFFSET_DEVICE_ID2);
1449                         info->device_id2 <<= 8;
1450                         info->device_id2 |= flash_read_uchar (info,
1451                                                 FLASH_OFFSET_DEVICE_ID3);
1452                 }
1453                 break;
1454         case FLASH_CFI_16BIT:
1455                 info->device_id = flash_read_word (info,
1456                                                 FLASH_OFFSET_DEVICE_ID);
1457                 break;
1458         default:
1459                 break;
1460         }
1461         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1462 }
1463
1464 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1465 {
1466         info->cmd_reset = AMD_CMD_RESET;
1467
1468         cmdset_amd_read_jedec_ids(info);
1469         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1470
1471         return 0;
1472 }
1473
1474 #ifdef CONFIG_FLASH_CFI_LEGACY
1475 static void flash_read_jedec_ids (flash_info_t * info)
1476 {
1477         info->manufacturer_id = 0;
1478         info->device_id       = 0;
1479         info->device_id2      = 0;
1480
1481         switch (info->vendor) {
1482         case CFI_CMDSET_INTEL_PROG_REGIONS:
1483         case CFI_CMDSET_INTEL_STANDARD:
1484         case CFI_CMDSET_INTEL_EXTENDED:
1485                 cmdset_intel_read_jedec_ids(info);
1486                 break;
1487         case CFI_CMDSET_AMD_STANDARD:
1488         case CFI_CMDSET_AMD_EXTENDED:
1489                 cmdset_amd_read_jedec_ids(info);
1490                 break;
1491         default:
1492                 break;
1493         }
1494 }
1495
1496 /*-----------------------------------------------------------------------
1497  * Call board code to request info about non-CFI flash.
1498  * board_flash_get_legacy needs to fill in at least:
1499  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1500  */
1501 static int flash_detect_legacy(phys_addr_t base, int banknum)
1502 {
1503         flash_info_t *info = &flash_info[banknum];
1504
1505         if (board_flash_get_legacy(base, banknum, info)) {
1506                 /* board code may have filled info completely. If not, we
1507                    use JEDEC ID probing. */
1508                 if (!info->vendor) {
1509                         int modes[] = {
1510                                 CFI_CMDSET_AMD_STANDARD,
1511                                 CFI_CMDSET_INTEL_STANDARD
1512                         };
1513                         int i;
1514
1515                         for (i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) {
1516                                 info->vendor = modes[i];
1517                                 info->start[0] =
1518                                         (ulong)map_physmem(base,
1519                                                            info->portwidth,
1520                                                            MAP_NOCACHE);
1521                                 if (info->portwidth == FLASH_CFI_8BIT
1522                                         && info->interface == FLASH_CFI_X8X16) {
1523                                         info->addr_unlock1 = 0x2AAA;
1524                                         info->addr_unlock2 = 0x5555;
1525                                 } else {
1526                                         info->addr_unlock1 = 0x5555;
1527                                         info->addr_unlock2 = 0x2AAA;
1528                                 }
1529                                 flash_read_jedec_ids(info);
1530                                 debug("JEDEC PROBE: ID %x %x %x\n",
1531                                                 info->manufacturer_id,
1532                                                 info->device_id,
1533                                                 info->device_id2);
1534                                 if (jedec_flash_match(info, info->start[0]))
1535                                         break;
1536                                 else
1537                                         unmap_physmem((void *)info->start[0],
1538                                                       MAP_NOCACHE);
1539                         }
1540                 }
1541
1542                 switch(info->vendor) {
1543                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1544                 case CFI_CMDSET_INTEL_STANDARD:
1545                 case CFI_CMDSET_INTEL_EXTENDED:
1546                         info->cmd_reset = FLASH_CMD_RESET;
1547                         break;
1548                 case CFI_CMDSET_AMD_STANDARD:
1549                 case CFI_CMDSET_AMD_EXTENDED:
1550                 case CFI_CMDSET_AMD_LEGACY:
1551                         info->cmd_reset = AMD_CMD_RESET;
1552                         break;
1553                 }
1554                 info->flash_id = FLASH_MAN_CFI;
1555                 return 1;
1556         }
1557         return 0; /* use CFI */
1558 }
1559 #else
1560 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1561 {
1562         return 0; /* use CFI */
1563 }
1564 #endif
1565
1566 /*-----------------------------------------------------------------------
1567  * detect if flash is compatible with the Common Flash Interface (CFI)
1568  * http://www.jedec.org/download/search/jesd68.pdf
1569  */
1570 static void flash_read_cfi (flash_info_t *info, void *buf,
1571                 unsigned int start, size_t len)
1572 {
1573         u8 *p = buf;
1574         unsigned int i;
1575
1576         for (i = 0; i < len; i++)
1577                 p[i] = flash_read_uchar(info, start + i);
1578 }
1579
1580 void __flash_cmd_reset(flash_info_t *info)
1581 {
1582         /*
1583          * We do not yet know what kind of commandset to use, so we issue
1584          * the reset command in both Intel and AMD variants, in the hope
1585          * that AMD flash roms ignore the Intel command.
1586          */
1587         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1588         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1589 }
1590 void flash_cmd_reset(flash_info_t *info)
1591         __attribute__((weak,alias("__flash_cmd_reset")));
1592
1593 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1594 {
1595         int cfi_offset;
1596
1597         /* Issue FLASH reset command */
1598         flash_cmd_reset(info);
1599
1600         for (cfi_offset=0;
1601              cfi_offset < sizeof(flash_offset_cfi) / sizeof(uint);
1602              cfi_offset++) {
1603                 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1604                                  FLASH_CMD_CFI);
1605                 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1606                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1607                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1608                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1609                                         sizeof(struct cfi_qry));
1610                         info->interface = le16_to_cpu(qry->interface_desc);
1611
1612                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1613                         debug ("device interface is %d\n",
1614                                info->interface);
1615                         debug ("found port %d chip %d ",
1616                                info->portwidth, info->chipwidth);
1617                         debug ("port %d bits chip %d bits\n",
1618                                info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1619                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1620
1621                         /* calculate command offsets as in the Linux driver */
1622                         info->addr_unlock1 = 0x555;
1623                         info->addr_unlock2 = 0x2aa;
1624
1625                         /*
1626                          * modify the unlock address if we are
1627                          * in compatibility mode
1628                          */
1629                         if (    /* x8/x16 in x8 mode */
1630                                 ((info->chipwidth == FLASH_CFI_BY8) &&
1631                                         (info->interface == FLASH_CFI_X8X16)) ||
1632                                 /* x16/x32 in x16 mode */
1633                                 ((info->chipwidth == FLASH_CFI_BY16) &&
1634                                         (info->interface == FLASH_CFI_X16X32)))
1635                         {
1636                                 info->addr_unlock1 = 0xaaa;
1637                                 info->addr_unlock2 = 0x555;
1638                         }
1639
1640                         info->name = "CFI conformant";
1641                         return 1;
1642                 }
1643         }
1644
1645         return 0;
1646 }
1647
1648 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1649 {
1650         debug ("flash detect cfi\n");
1651
1652         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1653              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1654                 for (info->chipwidth = FLASH_CFI_BY8;
1655                      info->chipwidth <= info->portwidth;
1656                      info->chipwidth <<= 1)
1657                         if (__flash_detect_cfi(info, qry))
1658                                 return 1;
1659         }
1660         debug ("not found\n");
1661         return 0;
1662 }
1663
1664 /*
1665  * Manufacturer-specific quirks. Add workarounds for geometry
1666  * reversal, etc. here.
1667  */
1668 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1669 {
1670         /* check if flash geometry needs reversal */
1671         if (qry->num_erase_regions > 1) {
1672                 /* reverse geometry if top boot part */
1673                 if (info->cfi_version < 0x3131) {
1674                         /* CFI < 1.1, try to guess from device id */
1675                         if ((info->device_id & 0x80) != 0)
1676                                 cfi_reverse_geometry(qry);
1677                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1678                         /* CFI >= 1.1, deduct from top/bottom flag */
1679                         /* note: ext_addr is valid since cfi_version > 0 */
1680                         cfi_reverse_geometry(qry);
1681                 }
1682         }
1683 }
1684
1685 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1686 {
1687         int reverse_geometry = 0;
1688
1689         /* Check the "top boot" bit in the PRI */
1690         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1691                 reverse_geometry = 1;
1692
1693         /* AT49BV6416(T) list the erase regions in the wrong order.
1694          * However, the device ID is identical with the non-broken
1695          * AT49BV642D they differ in the high byte.
1696          */
1697         if (info->device_id == 0xd6 || info->device_id == 0xd2)
1698                 reverse_geometry = !reverse_geometry;
1699
1700         if (reverse_geometry)
1701                 cfi_reverse_geometry(qry);
1702 }
1703
1704 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1705 {
1706         /* check if flash geometry needs reversal */
1707         if (qry->num_erase_regions > 1) {
1708                 /* reverse geometry if top boot part */
1709                 if (info->cfi_version < 0x3131) {
1710                         /* CFI < 1.1, guess by device id (M29W320{DT,ET} only) */
1711                         if (info->device_id == 0x22CA ||
1712                             info->device_id == 0x2256) {
1713                                 cfi_reverse_geometry(qry);
1714                         }
1715                 }
1716         }
1717 }
1718
1719 /*
1720  * The following code cannot be run from FLASH!
1721  *
1722  */
1723 ulong flash_get_size (phys_addr_t base, int banknum)
1724 {
1725         flash_info_t *info = &flash_info[banknum];
1726         int i, j;
1727         flash_sect_t sect_cnt;
1728         phys_addr_t sector;
1729         unsigned long tmp;
1730         int size_ratio;
1731         uchar num_erase_regions;
1732         int erase_region_size;
1733         int erase_region_count;
1734         struct cfi_qry qry;
1735
1736         memset(&qry, 0, sizeof(qry));
1737
1738         info->ext_addr = 0;
1739         info->cfi_version = 0;
1740 #ifdef CONFIG_SYS_FLASH_PROTECTION
1741         info->legacy_unlock = 0;
1742 #endif
1743
1744         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
1745
1746         if (flash_detect_cfi (info, &qry)) {
1747                 info->vendor = le16_to_cpu(qry.p_id);
1748                 info->ext_addr = le16_to_cpu(qry.p_adr);
1749                 num_erase_regions = qry.num_erase_regions;
1750
1751                 if (info->ext_addr) {
1752                         info->cfi_version = (ushort) flash_read_uchar (info,
1753                                                 info->ext_addr + 3) << 8;
1754                         info->cfi_version |= (ushort) flash_read_uchar (info,
1755                                                 info->ext_addr + 4);
1756                 }
1757
1758 #ifdef DEBUG
1759                 flash_printqry (&qry);
1760 #endif
1761
1762                 switch (info->vendor) {
1763                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1764                 case CFI_CMDSET_INTEL_STANDARD:
1765                 case CFI_CMDSET_INTEL_EXTENDED:
1766                         cmdset_intel_init(info, &qry);
1767                         break;
1768                 case CFI_CMDSET_AMD_STANDARD:
1769                 case CFI_CMDSET_AMD_EXTENDED:
1770                         cmdset_amd_init(info, &qry);
1771                         break;
1772                 default:
1773                         printf("CFI: Unknown command set 0x%x\n",
1774                                         info->vendor);
1775                         /*
1776                          * Unfortunately, this means we don't know how
1777                          * to get the chip back to Read mode. Might
1778                          * as well try an Intel-style reset...
1779                          */
1780                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1781                         return 0;
1782                 }
1783
1784                 /* Do manufacturer-specific fixups */
1785                 switch (info->manufacturer_id) {
1786                 case 0x0001:
1787                         flash_fixup_amd(info, &qry);
1788                         break;
1789                 case 0x001f:
1790                         flash_fixup_atmel(info, &qry);
1791                         break;
1792                 case 0x0020:
1793                         flash_fixup_stm(info, &qry);
1794                         break;
1795                 }
1796
1797                 debug ("manufacturer is %d\n", info->vendor);
1798                 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
1799                 debug ("device id is 0x%x\n", info->device_id);
1800                 debug ("device id2 is 0x%x\n", info->device_id2);
1801                 debug ("cfi version is 0x%04x\n", info->cfi_version);
1802
1803                 size_ratio = info->portwidth / info->chipwidth;
1804                 /* if the chip is x8/x16 reduce the ratio by half */
1805                 if ((info->interface == FLASH_CFI_X8X16)
1806                     && (info->chipwidth == FLASH_CFI_BY8)) {
1807                         size_ratio >>= 1;
1808                 }
1809                 debug ("size_ratio %d port %d bits chip %d bits\n",
1810                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1811                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1812                 debug ("found %d erase regions\n", num_erase_regions);
1813                 sect_cnt = 0;
1814                 sector = base;
1815                 for (i = 0; i < num_erase_regions; i++) {
1816                         if (i > NUM_ERASE_REGIONS) {
1817                                 printf ("%d erase regions found, only %d used\n",
1818                                         num_erase_regions, NUM_ERASE_REGIONS);
1819                                 break;
1820                         }
1821
1822                         tmp = le32_to_cpu(qry.erase_region_info[i]);
1823                         debug("erase region %u: 0x%08lx\n", i, tmp);
1824
1825                         erase_region_count = (tmp & 0xffff) + 1;
1826                         tmp >>= 16;
1827                         erase_region_size =
1828                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
1829                         debug ("erase_region_count = %d erase_region_size = %d\n",
1830                                 erase_region_count, erase_region_size);
1831                         for (j = 0; j < erase_region_count; j++) {
1832                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
1833                                         printf("ERROR: too many flash sectors\n");
1834                                         break;
1835                                 }
1836                                 info->start[sect_cnt] =
1837                                         (ulong)map_physmem(sector,
1838                                                            info->portwidth,
1839                                                            MAP_NOCACHE);
1840                                 sector += (erase_region_size * size_ratio);
1841
1842                                 /*
1843                                  * Only read protection status from
1844                                  * supported devices (intel...)
1845                                  */
1846                                 switch (info->vendor) {
1847                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1848                                 case CFI_CMDSET_INTEL_EXTENDED:
1849                                 case CFI_CMDSET_INTEL_STANDARD:
1850                                         info->protect[sect_cnt] =
1851                                                 flash_isset (info, sect_cnt,
1852                                                              FLASH_OFFSET_PROTECT,
1853                                                              FLASH_STATUS_PROTECT);
1854                                         break;
1855                                 default:
1856                                         /* default: not protected */
1857                                         info->protect[sect_cnt] = 0;
1858                                 }
1859
1860                                 sect_cnt++;
1861                         }
1862                 }
1863
1864                 info->sector_count = sect_cnt;
1865                 info->size = 1 << qry.dev_size;
1866                 /* multiply the size by the number of chips */
1867                 info->size *= size_ratio;
1868                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
1869                 tmp = 1 << qry.block_erase_timeout_typ;
1870                 info->erase_blk_tout = tmp *
1871                         (1 << qry.block_erase_timeout_max);
1872                 tmp = (1 << qry.buf_write_timeout_typ) *
1873                         (1 << qry.buf_write_timeout_max);
1874
1875                 /* round up when converting to ms */
1876                 info->buffer_write_tout = (tmp + 999) / 1000;
1877                 tmp = (1 << qry.word_write_timeout_typ) *
1878                         (1 << qry.word_write_timeout_max);
1879                 /* round up when converting to ms */
1880                 info->write_tout = (tmp + 999) / 1000;
1881                 info->flash_id = FLASH_MAN_CFI;
1882                 if ((info->interface == FLASH_CFI_X8X16) &&
1883                     (info->chipwidth == FLASH_CFI_BY8)) {
1884                         /* XXX - Need to test on x8/x16 in parallel. */
1885                         info->portwidth >>= 1;
1886                 }
1887
1888                 flash_write_cmd (info, 0, 0, info->cmd_reset);
1889         }
1890
1891         return (info->size);
1892 }
1893
1894 void flash_set_verbose(uint v)
1895 {
1896         flash_verbose = v;
1897 }
1898
1899 /*-----------------------------------------------------------------------
1900  */
1901 unsigned long flash_init (void)
1902 {
1903         unsigned long size = 0;
1904         int i;
1905 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
1906         struct apl_s {
1907                 ulong start;
1908                 ulong size;
1909         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
1910 #endif
1911
1912 #ifdef CONFIG_SYS_FLASH_PROTECTION
1913         /* read environment from EEPROM */
1914         char s[64];
1915         getenv_r ("unlock", s, sizeof(s));
1916 #endif
1917
1918 #define BANK_BASE(i)    (((phys_addr_t [CFI_MAX_FLASH_BANKS])CONFIG_SYS_FLASH_BANKS_LIST)[i])
1919
1920         /* Init: no FLASHes known */
1921         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
1922                 flash_info[i].flash_id = FLASH_UNKNOWN;
1923
1924                 if (!flash_detect_legacy (BANK_BASE(i), i))
1925                         flash_get_size (BANK_BASE(i), i);
1926                 size += flash_info[i].size;
1927                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
1928 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
1929                         printf ("## Unknown FLASH on Bank %d "
1930                                 "- Size = 0x%08lx = %ld MB\n",
1931                                 i+1, flash_info[i].size,
1932                                 flash_info[i].size << 20);
1933 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
1934                 }
1935 #ifdef CONFIG_SYS_FLASH_PROTECTION
1936                 else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
1937                         /*
1938                          * Only the U-Boot image and it's environment
1939                          * is protected, all other sectors are
1940                          * unprotected (unlocked) if flash hardware
1941                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
1942                          * and the environment variable "unlock" is
1943                          * set to "yes".
1944                          */
1945                         if (flash_info[i].legacy_unlock) {
1946                                 int k;
1947
1948                                 /*
1949                                  * Disable legacy_unlock temporarily,
1950                                  * since flash_real_protect would
1951                                  * relock all other sectors again
1952                                  * otherwise.
1953                                  */
1954                                 flash_info[i].legacy_unlock = 0;
1955
1956                                 /*
1957                                  * Legacy unlocking (e.g. Intel J3) ->
1958                                  * unlock only one sector. This will
1959                                  * unlock all sectors.
1960                                  */
1961                                 flash_real_protect (&flash_info[i], 0, 0);
1962
1963                                 flash_info[i].legacy_unlock = 1;
1964
1965                                 /*
1966                                  * Manually mark other sectors as
1967                                  * unlocked (unprotected)
1968                                  */
1969                                 for (k = 1; k < flash_info[i].sector_count; k++)
1970                                         flash_info[i].protect[k] = 0;
1971                         } else {
1972                                 /*
1973                                  * No legancy unlocking -> unlock all sectors
1974                                  */
1975                                 flash_protect (FLAG_PROTECT_CLEAR,
1976                                                flash_info[i].start[0],
1977                                                flash_info[i].start[0]
1978                                                + flash_info[i].size - 1,
1979                                                &flash_info[i]);
1980                         }
1981                 }
1982 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1983         }
1984
1985         /* Monitor protection ON by default */
1986 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
1987         (!defined(CONFIG_MONITOR_IS_IN_RAM))
1988         flash_protect (FLAG_PROTECT_SET,
1989                        CONFIG_SYS_MONITOR_BASE,
1990                        CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
1991                        flash_get_info(CONFIG_SYS_MONITOR_BASE));
1992 #endif
1993
1994         /* Environment protection ON by default */
1995 #ifdef CONFIG_ENV_IS_IN_FLASH
1996         flash_protect (FLAG_PROTECT_SET,
1997                        CONFIG_ENV_ADDR,
1998                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
1999                        flash_get_info(CONFIG_ENV_ADDR));
2000 #endif
2001
2002         /* Redundant environment protection ON by default */
2003 #ifdef CONFIG_ENV_ADDR_REDUND
2004         flash_protect (FLAG_PROTECT_SET,
2005                        CONFIG_ENV_ADDR_REDUND,
2006                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2007                        flash_get_info(CONFIG_ENV_ADDR_REDUND));
2008 #endif
2009
2010 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2011         for (i = 0; i < (sizeof(apl) / sizeof(struct apl_s)); i++) {
2012                 debug("autoprotecting from %08x to %08x\n",
2013                       apl[i].start, apl[i].start + apl[i].size - 1);
2014                 flash_protect (FLAG_PROTECT_SET,
2015                                apl[i].start,
2016                                apl[i].start + apl[i].size - 1,
2017                                flash_get_info(apl[i].start));
2018         }
2019 #endif
2020
2021 #ifdef CONFIG_FLASH_CFI_MTD
2022         cfi_mtd_init();
2023 #endif
2024
2025         return (size);
2026 }