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  * SPDX-License-Identifier:     GPL-2.0+
  15  */
  16
  17 /* The DEBUG define must be before common to enable debugging */
  18 /* #define DEBUG        */
  19
  20 #include <common.h>
  21 #include <console.h>
  22 #include <dm.h>
  23 #include <errno.h>
  24 #include <fdt_support.h>
  25 #include <asm/processor.h>
  26 #include <asm/io.h>
  27 #include <asm/byteorder.h>
  28 #include <asm/unaligned.h>
  29 #include <environment.h>
  30 #include <mtd/cfi_flash.h>
  31 #include <watchdog.h>
  32
  33 /*
  34  * This file implements a Common Flash Interface (CFI) driver for
  35  * U-Boot.
  36  *
  37  * The width of the port and the width of the chips are determined at
  38  * initialization.  These widths are used to calculate the address for
  39  * access CFI data structures.
  40  *
  41  * References
  42  * JEDEC Standard JESD68 - Common Flash Interface (CFI)
  43  * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
  44  * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
  45  * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
  46  * AMD CFI Specification, Release 2.0 December 1, 2001
  47  * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
  48  *   Device IDs, Publication Number 25538 Revision A, November 8, 2001
  49  *
  50  * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
  51  * reading and writing ... (yes there is such a Hardware).
  52  */
  53
  54 DECLARE_GLOBAL_DATA_PTR;
  55
  56 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
  57 #ifdef CONFIG_FLASH_CFI_MTD
  58 static uint flash_verbose = 1;
  59 #else
  60 #define flash_verbose 1
  61 #endif
  62
  63 flash_info_t flash_info[CFI_MAX_FLASH_BANKS];   /* FLASH chips info */
  64
  65 /*
  66  * Check if chip width is defined. If not, start detecting with 8bit.
  67  */
  68 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
  69 #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_8BIT
  70 #endif
  71
  72 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
  73 #define __maybe_weak __weak
  74 #else
  75 #define __maybe_weak static
  76 #endif
  77
  78 /*
  79  * 0xffff is an undefined value for the configuration register. When
  80  * this value is returned, the configuration register shall not be
  81  * written at all (default mode).
  82  */
  83 static u16 cfi_flash_config_reg(int i)
  84 {
  85 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
  86         return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
  87 #else
  88         return 0xffff;
  89 #endif
  90 }
  91
  92 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
  93 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
  94 #endif
  95
  96 #ifdef CONFIG_CFI_FLASH /* for driver model */
  97 static void cfi_flash_init_dm(void)
  98 {
  99         struct udevice *dev;
 100
 101         cfi_flash_num_flash_banks = 0;
 102         /*
 103          * The uclass_first_device() will probe the first device and
 104          * uclass_next_device() will probe the rest if they exist. So
 105          * that cfi_flash_probe() will get called assigning the base
 106          * addresses that are available.
 107          */
 108         for (uclass_first_device(UCLASS_MTD, &dev);
 109              dev;
 110              uclass_next_device(&dev)) {
 111         }
 112 }
 113
 114 phys_addr_t cfi_flash_bank_addr(int i)
 115 {
 116         return flash_info[i].base;
 117 }
 118 #else
 119 __weak phys_addr_t cfi_flash_bank_addr(int i)
 120 {
 121         return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
 122 }
 123 #endif
 124
 125 __weak unsigned long cfi_flash_bank_size(int i)
 126 {
 127 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
 128         return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
 129 #else
 130         return 0;
 131 #endif
 132 }
 133
 134 __maybe_weak void flash_write8(u8 value, void *addr)
 135 {
 136         __raw_writeb(value, addr);
 137 }
 138
 139 __maybe_weak void flash_write16(u16 value, void *addr)
 140 {
 141         __raw_writew(value, addr);
 142 }
 143
 144 __maybe_weak void flash_write32(u32 value, void *addr)
 145 {
 146         __raw_writel(value, addr);
 147 }
 148
 149 __maybe_weak void flash_write64(u64 value, void *addr)
 150 {
 151         /* No architectures currently implement __raw_writeq() */
 152         *(volatile u64 *)addr = value;
 153 }
 154
 155 __maybe_weak u8 flash_read8(void *addr)
 156 {
 157         return __raw_readb(addr);
 158 }
 159
 160 __maybe_weak u16 flash_read16(void *addr)
 161 {
 162         return __raw_readw(addr);
 163 }
 164
 165 __maybe_weak u32 flash_read32(void *addr)
 166 {
 167         return __raw_readl(addr);
 168 }
 169
 170 __maybe_weak u64 flash_read64(void *addr)
 171 {
 172         /* No architectures currently implement __raw_readq() */
 173         return *(volatile u64 *)addr;
 174 }
 175
 176 /*-----------------------------------------------------------------------
 177  */
 178 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
 179 static flash_info_t *flash_get_info(ulong base)
 180 {
 181         int i;
 182         flash_info_t *info;
 183
 184         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
 185                 info = &flash_info[i];
 186                 if (info->size && info->start[0] <= base &&
 187                     base <= info->start[0] + info->size - 1)
 188                         return info;
 189         }
 190
 191         return NULL;
 192 }
 193 #endif
 194
 195 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
 196 {
 197         if (sect != (info->sector_count - 1))
 198                 return info->start[sect + 1] - info->start[sect];
 199         else
 200                 return info->start[0] + info->size - info->start[sect];
 201 }
 202
 203 /*-----------------------------------------------------------------------
 204  * create an address based on the offset and the port width
 205  */
 206 static inline void *
 207 flash_map (flash_info_t * info, flash_sect_t sect, uint offset)
 208 {
 209         unsigned int byte_offset = offset * info->portwidth;
 210
 211         return (void *)(info->start[sect] + byte_offset);
 212 }
 213
 214 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
 215                 unsigned int offset, void *addr)
 216 {
 217 }
 218
 219 /*-----------------------------------------------------------------------
 220  * make a proper sized command based on the port and chip widths
 221  */
 222 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
 223 {
 224         int i;
 225         int cword_offset;
 226         int cp_offset;
 227 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 228         u32 cmd_le = cpu_to_le32(cmd);
 229 #endif
 230         uchar val;
 231         uchar *cp = (uchar *) cmdbuf;
 232
 233         for (i = info->portwidth; i > 0; i--){
 234                 cword_offset = (info->portwidth-i)%info->chipwidth;
 235 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 236                 cp_offset = info->portwidth - i;
 237                 val = *((uchar*)&cmd_le + cword_offset);
 238 #else
 239                 cp_offset = i - 1;
 240                 val = *((uchar*)&cmd + sizeof(u32) - cword_offset - 1);
 241 #endif
 242                 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
 243         }
 244 }
 245
 246 #ifdef DEBUG
 247 /*-----------------------------------------------------------------------
 248  * Debug support
 249  */
 250 static void print_longlong (char *str, unsigned long long data)
 251 {
 252         int i;
 253         char *cp;
 254
 255         cp = (char *) &data;
 256         for (i = 0; i < 8; i++)
 257                 sprintf (&str[i * 2], "%2.2x", *cp++);
 258 }
 259
 260 static void flash_printqry (struct cfi_qry *qry)
 261 {
 262         u8 *p = (u8 *)qry;
 263         int x, y;
 264
 265         for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
 266                 debug("%02x : ", x);
 267                 for (y = 0; y < 16; y++)
 268                         debug("%2.2x ", p[x + y]);
 269                 debug(" ");
 270                 for (y = 0; y < 16; y++) {
 271                         unsigned char c = p[x + y];
 272                         if (c >= 0x20 && c <= 0x7e)
 273                                 debug("%c", c);
 274                         else
 275                                 debug(".");
 276                 }
 277                 debug("\n");
 278         }
 279 }
 280 #endif
 281
 282
 283 /*-----------------------------------------------------------------------
 284  * read a character at a port width address
 285  */
 286 static inline uchar flash_read_uchar (flash_info_t * info, uint offset)
 287 {
 288         uchar *cp;
 289         uchar retval;
 290
 291         cp = flash_map (info, 0, offset);
 292 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 293         retval = flash_read8(cp);
 294 #else
 295         retval = flash_read8(cp + info->portwidth - 1);
 296 #endif
 297         flash_unmap (info, 0, offset, cp);
 298         return retval;
 299 }
 300
 301 /*-----------------------------------------------------------------------
 302  * read a word at a port width address, assume 16bit bus
 303  */
 304 static inline ushort flash_read_word (flash_info_t * info, uint offset)
 305 {
 306         ushort *addr, retval;
 307
 308         addr = flash_map (info, 0, offset);
 309         retval = flash_read16 (addr);
 310         flash_unmap (info, 0, offset, addr);
 311         return retval;
 312 }
 313
 314
 315 /*-----------------------------------------------------------------------
 316  * read a long word by picking the least significant byte of each maximum
 317  * port size word. Swap for ppc format.
 318  */
 319 static ulong flash_read_long (flash_info_t * info, flash_sect_t sect,
 320                               uint offset)
 321 {
 322         uchar *addr;
 323         ulong retval;
 324
 325 #ifdef DEBUG
 326         int x;
 327 #endif
 328         addr = flash_map (info, sect, offset);
 329
 330 #ifdef DEBUG
 331         debug ("long addr is at %p info->portwidth = %d\n", addr,
 332                info->portwidth);
 333         for (x = 0; x < 4 * info->portwidth; x++) {
 334                 debug ("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
 335         }
 336 #endif
 337 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 338         retval = ((flash_read8(addr) << 16) |
 339                   (flash_read8(addr + info->portwidth) << 24) |
 340                   (flash_read8(addr + 2 * info->portwidth)) |
 341                   (flash_read8(addr + 3 * info->portwidth) << 8));
 342 #else
 343         retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
 344                   (flash_read8(addr + info->portwidth - 1) << 16) |
 345                   (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
 346                   (flash_read8(addr + 3 * info->portwidth - 1)));
 347 #endif
 348         flash_unmap(info, sect, offset, addr);
 349
 350         return retval;
 351 }
 352
 353 /*
 354  * Write a proper sized command to the correct address
 355  */
 356 static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
 357                             uint offset, u32 cmd)
 358 {
 359
 360         void *addr;
 361         cfiword_t cword;
 362
 363         addr = flash_map (info, sect, offset);
 364         flash_make_cmd (info, cmd, &cword);
 365         switch (info->portwidth) {
 366         case FLASH_CFI_8BIT:
 367                 debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
 368                        cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 369                 flash_write8(cword.w8, addr);
 370                 break;
 371         case FLASH_CFI_16BIT:
 372                 debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
 373                        cmd, cword.w16,
 374                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 375                 flash_write16(cword.w16, addr);
 376                 break;
 377         case FLASH_CFI_32BIT:
 378                 debug ("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr,
 379                        cmd, cword.w32,
 380                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 381                 flash_write32(cword.w32, addr);
 382                 break;
 383         case FLASH_CFI_64BIT:
 384 #ifdef DEBUG
 385                 {
 386                         char str[20];
 387
 388                         print_longlong (str, cword.w64);
 389
 390                         debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 391                                addr, cmd, str,
 392                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 393                 }
 394 #endif
 395                 flash_write64(cword.w64, addr);
 396                 break;
 397         }
 398
 399         /* Ensure all the instructions are fully finished */
 400         sync();
 401
 402         flash_unmap(info, sect, offset, addr);
 403 }
 404
 405 static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
 406 {
 407         flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
 408         flash_write_cmd (info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
 409 }
 410
 411 /*-----------------------------------------------------------------------
 412  */
 413 static int flash_isequal (flash_info_t * info, flash_sect_t sect,
 414                           uint offset, uchar cmd)
 415 {
 416         void *addr;
 417         cfiword_t cword;
 418         int retval;
 419
 420         addr = flash_map (info, sect, offset);
 421         flash_make_cmd (info, cmd, &cword);
 422
 423         debug ("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
 424         switch (info->portwidth) {
 425         case FLASH_CFI_8BIT:
 426                 debug ("is= %x %x\n", flash_read8(addr), cword.w8);
 427                 retval = (flash_read8(addr) == cword.w8);
 428                 break;
 429         case FLASH_CFI_16BIT:
 430                 debug ("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16);
 431                 retval = (flash_read16(addr) == cword.w16);
 432                 break;
 433         case FLASH_CFI_32BIT:
 434                 debug ("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32);
 435                 retval = (flash_read32(addr) == cword.w32);
 436                 break;
 437         case FLASH_CFI_64BIT:
 438 #ifdef DEBUG
 439                 {
 440                         char str1[20];
 441                         char str2[20];
 442
 443                         print_longlong (str1, flash_read64(addr));
 444                         print_longlong (str2, cword.w64);
 445                         debug ("is= %s %s\n", str1, str2);
 446                 }
 447 #endif
 448                 retval = (flash_read64(addr) == cword.w64);
 449                 break;
 450         default:
 451                 retval = 0;
 452                 break;
 453         }
 454         flash_unmap(info, sect, offset, addr);
 455
 456         return retval;
 457 }
 458
 459 /*-----------------------------------------------------------------------
 460  */
 461 static int flash_isset (flash_info_t * info, flash_sect_t sect,
 462                         uint offset, uchar cmd)
 463 {
 464         void *addr;
 465         cfiword_t cword;
 466         int retval;
 467
 468         addr = flash_map (info, sect, offset);
 469         flash_make_cmd (info, cmd, &cword);
 470         switch (info->portwidth) {
 471         case FLASH_CFI_8BIT:
 472                 retval = ((flash_read8(addr) & cword.w8) == cword.w8);
 473                 break;
 474         case FLASH_CFI_16BIT:
 475                 retval = ((flash_read16(addr) & cword.w16) == cword.w16);
 476                 break;
 477         case FLASH_CFI_32BIT:
 478                 retval = ((flash_read32(addr) & cword.w32) == cword.w32);
 479                 break;
 480         case FLASH_CFI_64BIT:
 481                 retval = ((flash_read64(addr) & cword.w64) == cword.w64);
 482                 break;
 483         default:
 484                 retval = 0;
 485                 break;
 486         }
 487         flash_unmap(info, sect, offset, addr);
 488
 489         return retval;
 490 }
 491
 492 /*-----------------------------------------------------------------------
 493  */
 494 static int flash_toggle (flash_info_t * info, flash_sect_t sect,
 495                          uint offset, uchar cmd)
 496 {
 497         void *addr;
 498         cfiword_t cword;
 499         int retval;
 500
 501         addr = flash_map (info, sect, offset);
 502         flash_make_cmd (info, cmd, &cword);
 503         switch (info->portwidth) {
 504         case FLASH_CFI_8BIT:
 505                 retval = flash_read8(addr) != flash_read8(addr);
 506                 break;
 507         case FLASH_CFI_16BIT:
 508                 retval = flash_read16(addr) != flash_read16(addr);
 509                 break;
 510         case FLASH_CFI_32BIT:
 511                 retval = flash_read32(addr) != flash_read32(addr);
 512                 break;
 513         case FLASH_CFI_64BIT:
 514                 retval = ( (flash_read32( addr ) != flash_read32( addr )) ||
 515                            (flash_read32(addr+4) != flash_read32(addr+4)) );
 516                 break;
 517         default:
 518                 retval = 0;
 519                 break;
 520         }
 521         flash_unmap(info, sect, offset, addr);
 522
 523         return retval;
 524 }
 525
 526 /*
 527  * flash_is_busy - check to see if the flash is busy
 528  *
 529  * This routine checks the status of the chip and returns true if the
 530  * chip is busy.
 531  */
 532 static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
 533 {
 534         int retval;
 535
 536         switch (info->vendor) {
 537         case CFI_CMDSET_INTEL_PROG_REGIONS:
 538         case CFI_CMDSET_INTEL_STANDARD:
 539         case CFI_CMDSET_INTEL_EXTENDED:
 540                 retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
 541                 break;
 542         case CFI_CMDSET_AMD_STANDARD:
 543         case CFI_CMDSET_AMD_EXTENDED:
 544 #ifdef CONFIG_FLASH_CFI_LEGACY
 545         case CFI_CMDSET_AMD_LEGACY:
 546 #endif
 547                 if (info->sr_supported) {
 548                         flash_write_cmd (info, sect, info->addr_unlock1,
 549                                          FLASH_CMD_READ_STATUS);
 550                         retval = !flash_isset (info, sect, 0,
 551                                                FLASH_STATUS_DONE);
 552                 } else {
 553                         retval = flash_toggle (info, sect, 0,
 554                                                AMD_STATUS_TOGGLE);
 555                 }
 556
 557                 break;
 558         default:
 559                 retval = 0;
 560         }
 561         debug ("flash_is_busy: %d\n", retval);
 562         return retval;
 563 }
 564
 565 /*-----------------------------------------------------------------------
 566  *  wait for XSR.7 to be set. Time out with an error if it does not.
 567  *  This routine does not set the flash to read-array mode.
 568  */
 569 static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 570                                ulong tout, char *prompt)
 571 {
 572         ulong start;
 573
 574 #if CONFIG_SYS_HZ != 1000
 575         if ((ulong)CONFIG_SYS_HZ > 100000)
 576                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 577         else
 578                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 579 #endif
 580
 581         /* Wait for command completion */
 582 #ifdef CONFIG_SYS_LOW_RES_TIMER
 583         reset_timer();
 584 #endif
 585         start = get_timer (0);
 586         WATCHDOG_RESET();
 587         while (flash_is_busy (info, sector)) {
 588                 if (get_timer (start) > tout) {
 589                         printf ("Flash %s timeout at address %lx data %lx\n",
 590                                 prompt, info->start[sector],
 591                                 flash_read_long (info, sector, 0));
 592                         flash_write_cmd (info, sector, 0, info->cmd_reset);
 593                         udelay(1);
 594                         return ERR_TIMOUT;
 595                 }
 596                 udelay (1);             /* also triggers watchdog */
 597         }
 598         return ERR_OK;
 599 }
 600
 601 /*-----------------------------------------------------------------------
 602  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 603  * do a full status check.
 604  *
 605  * This routine sets the flash to read-array mode.
 606  */
 607 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 608                                     ulong tout, char *prompt)
 609 {
 610         int retcode;
 611
 612         retcode = flash_status_check (info, sector, tout, prompt);
 613         switch (info->vendor) {
 614         case CFI_CMDSET_INTEL_PROG_REGIONS:
 615         case CFI_CMDSET_INTEL_EXTENDED:
 616         case CFI_CMDSET_INTEL_STANDARD:
 617                 if ((retcode == ERR_OK)
 618                     && !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) {
 619                         retcode = ERR_INVAL;
 620                         printf ("Flash %s error at address %lx\n", prompt,
 621                                 info->start[sector]);
 622                         if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS |
 623                                          FLASH_STATUS_PSLBS)) {
 624                                 puts ("Command Sequence Error.\n");
 625                         } else if (flash_isset (info, sector, 0,
 626                                                 FLASH_STATUS_ECLBS)) {
 627                                 puts ("Block Erase Error.\n");
 628                                 retcode = ERR_NOT_ERASED;
 629                         } else if (flash_isset (info, sector, 0,
 630                                                 FLASH_STATUS_PSLBS)) {
 631                                 puts ("Locking Error\n");
 632                         }
 633                         if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
 634                                 puts ("Block locked.\n");
 635                                 retcode = ERR_PROTECTED;
 636                         }
 637                         if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
 638                                 puts ("Vpp Low Error.\n");
 639                 }
 640                 flash_write_cmd (info, sector, 0, info->cmd_reset);
 641                 udelay(1);
 642                 break;
 643         default:
 644                 break;
 645         }
 646         return retcode;
 647 }
 648
 649 static int use_flash_status_poll(flash_info_t *info)
 650 {
 651 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 652         if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
 653             info->vendor == CFI_CMDSET_AMD_STANDARD)
 654                 return 1;
 655 #endif
 656         return 0;
 657 }
 658
 659 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 660                              ulong tout, char *prompt)
 661 {
 662 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 663         ulong start;
 664         int ready;
 665
 666 #if CONFIG_SYS_HZ != 1000
 667         if ((ulong)CONFIG_SYS_HZ > 100000)
 668                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 669         else
 670                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 671 #endif
 672
 673         /* Wait for command completion */
 674 #ifdef CONFIG_SYS_LOW_RES_TIMER
 675         reset_timer();
 676 #endif
 677         start = get_timer(0);
 678         WATCHDOG_RESET();
 679         while (1) {
 680                 switch (info->portwidth) {
 681                 case FLASH_CFI_8BIT:
 682                         ready = flash_read8(dst) == flash_read8(src);
 683                         break;
 684                 case FLASH_CFI_16BIT:
 685                         ready = flash_read16(dst) == flash_read16(src);
 686                         break;
 687                 case FLASH_CFI_32BIT:
 688                         ready = flash_read32(dst) == flash_read32(src);
 689                         break;
 690                 case FLASH_CFI_64BIT:
 691                         ready = flash_read64(dst) == flash_read64(src);
 692                         break;
 693                 default:
 694                         ready = 0;
 695                         break;
 696                 }
 697                 if (ready)
 698                         break;
 699                 if (get_timer(start) > tout) {
 700                         printf("Flash %s timeout at address %lx data %lx\n",
 701                                prompt, (ulong)dst, (ulong)flash_read8(dst));
 702                         return ERR_TIMOUT;
 703                 }
 704                 udelay(1);              /* also triggers watchdog */
 705         }
 706 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
 707         return ERR_OK;
 708 }
 709
 710 /*-----------------------------------------------------------------------
 711  */
 712 static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
 713 {
 714 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 715         unsigned short  w;
 716         unsigned int    l;
 717         unsigned long long ll;
 718 #endif
 719
 720         switch (info->portwidth) {
 721         case FLASH_CFI_8BIT:
 722                 cword->w8 = c;
 723                 break;
 724         case FLASH_CFI_16BIT:
 725 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 726                 w = c;
 727                 w <<= 8;
 728                 cword->w16 = (cword->w16 >> 8) | w;
 729 #else
 730                 cword->w16 = (cword->w16 << 8) | c;
 731 #endif
 732                 break;
 733         case FLASH_CFI_32BIT:
 734 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 735                 l = c;
 736                 l <<= 24;
 737                 cword->w32 = (cword->w32 >> 8) | l;
 738 #else
 739                 cword->w32 = (cword->w32 << 8) | c;
 740 #endif
 741                 break;
 742         case FLASH_CFI_64BIT:
 743 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 744                 ll = c;
 745                 ll <<= 56;
 746                 cword->w64 = (cword->w64 >> 8) | ll;
 747 #else
 748                 cword->w64 = (cword->w64 << 8) | c;
 749 #endif
 750                 break;
 751         }
 752 }
 753
 754 /*
 755  * Loop through the sector table starting from the previously found sector.
 756  * Searches forwards or backwards, dependent on the passed address.
 757  */
 758 static flash_sect_t find_sector (flash_info_t * info, ulong addr)
 759 {
 760         static flash_sect_t saved_sector; /* previously found sector */
 761         static flash_info_t *saved_info; /* previously used flash bank */
 762         flash_sect_t sector = saved_sector;
 763
 764         if ((info != saved_info) || (sector >= info->sector_count))
 765                 sector = 0;
 766
 767         while ((info->start[sector] < addr)
 768                         && (sector < info->sector_count - 1))
 769                 sector++;
 770         while ((info->start[sector] > addr) && (sector > 0))
 771                 /*
 772                  * also decrements the sector in case of an overshot
 773                  * in the first loop
 774                  */
 775                 sector--;
 776
 777         saved_sector = sector;
 778         saved_info = info;
 779         return sector;
 780 }
 781
 782 /*-----------------------------------------------------------------------
 783  */
 784 static int flash_write_cfiword (flash_info_t * info, ulong dest,
 785                                 cfiword_t cword)
 786 {
 787         void *dstaddr = (void *)dest;
 788         int flag;
 789         flash_sect_t sect = 0;
 790         char sect_found = 0;
 791
 792         /* Check if Flash is (sufficiently) erased */
 793         switch (info->portwidth) {
 794         case FLASH_CFI_8BIT:
 795                 flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8);
 796                 break;
 797         case FLASH_CFI_16BIT:
 798                 flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16);
 799                 break;
 800         case FLASH_CFI_32BIT:
 801                 flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32);
 802                 break;
 803         case FLASH_CFI_64BIT:
 804                 flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64);
 805                 break;
 806         default:
 807                 flag = 0;
 808                 break;
 809         }
 810         if (!flag)
 811                 return ERR_NOT_ERASED;
 812
 813         /* Disable interrupts which might cause a timeout here */
 814         flag = disable_interrupts ();
 815
 816         switch (info->vendor) {
 817         case CFI_CMDSET_INTEL_PROG_REGIONS:
 818         case CFI_CMDSET_INTEL_EXTENDED:
 819         case CFI_CMDSET_INTEL_STANDARD:
 820                 flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 821                 flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
 822                 break;
 823         case CFI_CMDSET_AMD_EXTENDED:
 824         case CFI_CMDSET_AMD_STANDARD:
 825                 sect = find_sector(info, dest);
 826                 flash_unlock_seq (info, sect);
 827                 flash_write_cmd (info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 828                 sect_found = 1;
 829                 break;
 830 #ifdef CONFIG_FLASH_CFI_LEGACY
 831         case CFI_CMDSET_AMD_LEGACY:
 832                 sect = find_sector(info, dest);
 833                 flash_unlock_seq (info, 0);
 834                 flash_write_cmd (info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 835                 sect_found = 1;
 836                 break;
 837 #endif
 838         }
 839
 840         switch (info->portwidth) {
 841         case FLASH_CFI_8BIT:
 842                 flash_write8(cword.w8, dstaddr);
 843                 break;
 844         case FLASH_CFI_16BIT:
 845                 flash_write16(cword.w16, dstaddr);
 846                 break;
 847         case FLASH_CFI_32BIT:
 848                 flash_write32(cword.w32, dstaddr);
 849                 break;
 850         case FLASH_CFI_64BIT:
 851                 flash_write64(cword.w64, dstaddr);
 852                 break;
 853         }
 854
 855         /* re-enable interrupts if necessary */
 856         if (flag)
 857                 enable_interrupts ();
 858
 859         if (!sect_found)
 860                 sect = find_sector (info, dest);
 861
 862         if (use_flash_status_poll(info))
 863                 return flash_status_poll(info, &cword, dstaddr,
 864                                          info->write_tout, "write");
 865         else
 866                 return flash_full_status_check(info, sect,
 867                                                info->write_tout, "write");
 868 }
 869
 870 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 871
 872 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 873                                   int len)
 874 {
 875         flash_sect_t sector;
 876         int cnt;
 877         int retcode;
 878         void *src = cp;
 879         void *dst = (void *)dest;
 880         void *dst2 = dst;
 881         int flag = 1;
 882         uint offset = 0;
 883         unsigned int shift;
 884         uchar write_cmd;
 885
 886         switch (info->portwidth) {
 887         case FLASH_CFI_8BIT:
 888                 shift = 0;
 889                 break;
 890         case FLASH_CFI_16BIT:
 891                 shift = 1;
 892                 break;
 893         case FLASH_CFI_32BIT:
 894                 shift = 2;
 895                 break;
 896         case FLASH_CFI_64BIT:
 897                 shift = 3;
 898                 break;
 899         default:
 900                 retcode = ERR_INVAL;
 901                 goto out_unmap;
 902         }
 903
 904         cnt = len >> shift;
 905
 906         while ((cnt-- > 0) && (flag == 1)) {
 907                 switch (info->portwidth) {
 908                 case FLASH_CFI_8BIT:
 909                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 910                                 flash_read8(src));
 911                         src += 1, dst2 += 1;
 912                         break;
 913                 case FLASH_CFI_16BIT:
 914                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 915                                 flash_read16(src));
 916                         src += 2, dst2 += 2;
 917                         break;
 918                 case FLASH_CFI_32BIT:
 919                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 920                                 flash_read32(src));
 921                         src += 4, dst2 += 4;
 922                         break;
 923                 case FLASH_CFI_64BIT:
 924                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 925                                 flash_read64(src));
 926                         src += 8, dst2 += 8;
 927                         break;
 928                 }
 929         }
 930         if (!flag) {
 931                 retcode = ERR_NOT_ERASED;
 932                 goto out_unmap;
 933         }
 934
 935         src = cp;
 936         sector = find_sector (info, dest);
 937
 938         switch (info->vendor) {
 939         case CFI_CMDSET_INTEL_PROG_REGIONS:
 940         case CFI_CMDSET_INTEL_STANDARD:
 941         case CFI_CMDSET_INTEL_EXTENDED:
 942                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 943                                         FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
 944                 flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 945                 flash_write_cmd (info, sector, 0, FLASH_CMD_READ_STATUS);
 946                 flash_write_cmd (info, sector, 0, write_cmd);
 947                 retcode = flash_status_check (info, sector,
 948                                               info->buffer_write_tout,
 949                                               "write to buffer");
 950                 if (retcode == ERR_OK) {
 951                         /* reduce the number of loops by the width of
 952                          * the port */
 953                         cnt = len >> shift;
 954                         flash_write_cmd (info, sector, 0, cnt - 1);
 955                         while (cnt-- > 0) {
 956                                 switch (info->portwidth) {
 957                                 case FLASH_CFI_8BIT:
 958                                         flash_write8(flash_read8(src), dst);
 959                                         src += 1, dst += 1;
 960                                         break;
 961                                 case FLASH_CFI_16BIT:
 962                                         flash_write16(flash_read16(src), dst);
 963                                         src += 2, dst += 2;
 964                                         break;
 965                                 case FLASH_CFI_32BIT:
 966                                         flash_write32(flash_read32(src), dst);
 967                                         src += 4, dst += 4;
 968                                         break;
 969                                 case FLASH_CFI_64BIT:
 970                                         flash_write64(flash_read64(src), dst);
 971                                         src += 8, dst += 8;
 972                                         break;
 973                                 default:
 974                                         retcode = ERR_INVAL;
 975                                         goto out_unmap;
 976                                 }
 977                         }
 978                         flash_write_cmd (info, sector, 0,
 979                                          FLASH_CMD_WRITE_BUFFER_CONFIRM);
 980                         retcode = flash_full_status_check (
 981                                 info, sector, info->buffer_write_tout,
 982                                 "buffer write");
 983                 }
 984
 985                 break;
 986
 987         case CFI_CMDSET_AMD_STANDARD:
 988         case CFI_CMDSET_AMD_EXTENDED:
 989                 flash_unlock_seq(info, sector);
 990
 991 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 992                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 993 #endif
 994                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
 995                 cnt = len >> shift;
 996                 flash_write_cmd(info, sector, offset, cnt - 1);
 997
 998                 switch (info->portwidth) {
 999                 case FLASH_CFI_8BIT:
1000                         while (cnt-- > 0) {
1001                                 flash_write8(flash_read8(src), dst);
1002                                 src += 1, dst += 1;
1003                         }
1004                         break;
1005                 case FLASH_CFI_16BIT:
1006                         while (cnt-- > 0) {
1007                                 flash_write16(flash_read16(src), dst);
1008                                 src += 2, dst += 2;
1009                         }
1010                         break;
1011                 case FLASH_CFI_32BIT:
1012                         while (cnt-- > 0) {
1013                                 flash_write32(flash_read32(src), dst);
1014                                 src += 4, dst += 4;
1015                         }
1016                         break;
1017                 case FLASH_CFI_64BIT:
1018                         while (cnt-- > 0) {
1019                                 flash_write64(flash_read64(src), dst);
1020                                 src += 8, dst += 8;
1021                         }
1022                         break;
1023                 default:
1024                         retcode = ERR_INVAL;
1025                         goto out_unmap;
1026                 }
1027
1028                 flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1029                 if (use_flash_status_poll(info))
1030                         retcode = flash_status_poll(info, src - (1 << shift),
1031                                                     dst - (1 << shift),
1032                                                     info->buffer_write_tout,
1033                                                     "buffer write");
1034                 else
1035                         retcode = flash_full_status_check(info, sector,
1036                                                           info->buffer_write_tout,
1037                                                           "buffer write");
1038                 break;
1039
1040         default:
1041                 debug ("Unknown Command Set\n");
1042                 retcode = ERR_INVAL;
1043                 break;
1044         }
1045
1046 out_unmap:
1047         return retcode;
1048 }
1049 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1050
1051
1052 /*-----------------------------------------------------------------------
1053  */
1054 int flash_erase (flash_info_t * info, int s_first, int s_last)
1055 {
1056         int rcode = 0;
1057         int prot;
1058         flash_sect_t sect;
1059         int st;
1060
1061         if (info->flash_id != FLASH_MAN_CFI) {
1062                 puts ("Can't erase unknown flash type - aborted\n");
1063                 return 1;
1064         }
1065         if ((s_first < 0) || (s_first > s_last)) {
1066                 puts ("- no sectors to erase\n");
1067                 return 1;
1068         }
1069
1070         prot = 0;
1071         for (sect = s_first; sect <= s_last; ++sect) {
1072                 if (info->protect[sect]) {
1073                         prot++;
1074                 }
1075         }
1076         if (prot) {
1077                 printf ("- Warning: %d protected sectors will not be erased!\n",
1078                         prot);
1079         } else if (flash_verbose) {
1080                 putc ('\n');
1081         }
1082
1083
1084         for (sect = s_first; sect <= s_last; sect++) {
1085                 if (ctrlc()) {
1086                         printf("\n");
1087                         return 1;
1088                 }
1089
1090                 if (info->protect[sect] == 0) { /* not protected */
1091 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1092                         int k;
1093                         int size;
1094                         int erased;
1095                         u32 *flash;
1096
1097                         /*
1098                          * Check if whole sector is erased
1099                          */
1100                         size = flash_sector_size(info, sect);
1101                         erased = 1;
1102                         flash = (u32 *)info->start[sect];
1103                         /* divide by 4 for longword access */
1104                         size = size >> 2;
1105                         for (k = 0; k < size; k++) {
1106                                 if (flash_read32(flash++) != 0xffffffff) {
1107                                         erased = 0;
1108                                         break;
1109                                 }
1110                         }
1111                         if (erased) {
1112                                 if (flash_verbose)
1113                                         putc(',');
1114                                 continue;
1115                         }
1116 #endif
1117                         switch (info->vendor) {
1118                         case CFI_CMDSET_INTEL_PROG_REGIONS:
1119                         case CFI_CMDSET_INTEL_STANDARD:
1120                         case CFI_CMDSET_INTEL_EXTENDED:
1121                                 flash_write_cmd (info, sect, 0,
1122                                                  FLASH_CMD_CLEAR_STATUS);
1123                                 flash_write_cmd (info, sect, 0,
1124                                                  FLASH_CMD_BLOCK_ERASE);
1125                                 flash_write_cmd (info, sect, 0,
1126                                                  FLASH_CMD_ERASE_CONFIRM);
1127                                 break;
1128                         case CFI_CMDSET_AMD_STANDARD:
1129                         case CFI_CMDSET_AMD_EXTENDED:
1130                                 flash_unlock_seq (info, sect);
1131                                 flash_write_cmd (info, sect,
1132                                                 info->addr_unlock1,
1133                                                 AMD_CMD_ERASE_START);
1134                                 flash_unlock_seq (info, sect);
1135                                 flash_write_cmd (info, sect, 0,
1136                                                  info->cmd_erase_sector);
1137                                 break;
1138 #ifdef CONFIG_FLASH_CFI_LEGACY
1139                         case CFI_CMDSET_AMD_LEGACY:
1140                                 flash_unlock_seq (info, 0);
1141                                 flash_write_cmd (info, 0, info->addr_unlock1,
1142                                                 AMD_CMD_ERASE_START);
1143                                 flash_unlock_seq (info, 0);
1144                                 flash_write_cmd (info, sect, 0,
1145                                                 AMD_CMD_ERASE_SECTOR);
1146                                 break;
1147 #endif
1148                         default:
1149                                 debug ("Unkown flash vendor %d\n",
1150                                        info->vendor);
1151                                 break;
1152                         }
1153
1154                         if (use_flash_status_poll(info)) {
1155                                 cfiword_t cword;
1156                                 void *dest;
1157                                 cword.w64 = 0xffffffffffffffffULL;
1158                                 dest = flash_map(info, sect, 0);
1159                                 st = flash_status_poll(info, &cword, dest,
1160                                                        info->erase_blk_tout, "erase");
1161                                 flash_unmap(info, sect, 0, dest);
1162                         } else
1163                                 st = flash_full_status_check(info, sect,
1164                                                              info->erase_blk_tout,
1165                                                              "erase");
1166                         if (st)
1167                                 rcode = 1;
1168                         else if (flash_verbose)
1169                                 putc ('.');
1170                 }
1171         }
1172
1173         if (flash_verbose)
1174                 puts (" done\n");
1175
1176         return rcode;
1177 }
1178
1179 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1180 static int sector_erased(flash_info_t *info, int i)
1181 {
1182         int k;
1183         int size;
1184         u32 *flash;
1185
1186         /*
1187          * Check if whole sector is erased
1188          */
1189         size = flash_sector_size(info, i);
1190         flash = (u32 *)info->start[i];
1191         /* divide by 4 for longword access */
1192         size = size >> 2;
1193
1194         for (k = 0; k < size; k++) {
1195                 if (flash_read32(flash++) != 0xffffffff)
1196                         return 0;       /* not erased */
1197         }
1198
1199         return 1;                       /* erased */
1200 }
1201 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1202
1203 void flash_print_info (flash_info_t * info)
1204 {
1205         int i;
1206
1207         if (info->flash_id != FLASH_MAN_CFI) {
1208                 puts ("missing or unknown FLASH type\n");
1209                 return;
1210         }
1211
1212         printf ("%s flash (%d x %d)",
1213                 info->name,
1214                 (info->portwidth << 3), (info->chipwidth << 3));
1215         if (info->size < 1024*1024)
1216                 printf ("  Size: %ld kB in %d Sectors\n",
1217                         info->size >> 10, info->sector_count);
1218         else
1219                 printf ("  Size: %ld MB in %d Sectors\n",
1220                         info->size >> 20, info->sector_count);
1221         printf ("  ");
1222         switch (info->vendor) {
1223                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1224                         printf ("Intel Prog Regions");
1225                         break;
1226                 case CFI_CMDSET_INTEL_STANDARD:
1227                         printf ("Intel Standard");
1228                         break;
1229                 case CFI_CMDSET_INTEL_EXTENDED:
1230                         printf ("Intel Extended");
1231                         break;
1232                 case CFI_CMDSET_AMD_STANDARD:
1233                         printf ("AMD Standard");
1234                         break;
1235                 case CFI_CMDSET_AMD_EXTENDED:
1236                         printf ("AMD Extended");
1237                         break;
1238 #ifdef CONFIG_FLASH_CFI_LEGACY
1239                 case CFI_CMDSET_AMD_LEGACY:
1240                         printf ("AMD Legacy");
1241                         break;
1242 #endif
1243                 default:
1244                         printf ("Unknown (%d)", info->vendor);
1245                         break;
1246         }
1247         printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1248                 info->manufacturer_id);
1249         printf (info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1250                 info->device_id);
1251         if ((info->device_id & 0xff) == 0x7E) {
1252                 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1253                 info->device_id2);
1254         }
1255         if ((info->vendor == CFI_CMDSET_AMD_STANDARD) && (info->legacy_unlock))
1256                 printf("\n  Advanced Sector Protection (PPB) enabled");
1257         printf ("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1258                 info->erase_blk_tout,
1259                 info->write_tout);
1260         if (info->buffer_size > 1) {
1261                 printf ("  Buffer write timeout: %ld ms, "
1262                         "buffer size: %d bytes\n",
1263                 info->buffer_write_tout,
1264                 info->buffer_size);
1265         }
1266
1267         puts ("\n  Sector Start Addresses:");
1268         for (i = 0; i < info->sector_count; ++i) {
1269                 if (ctrlc())
1270                         break;
1271                 if ((i % 5) == 0)
1272                         putc('\n');
1273 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1274                 /* print empty and read-only info */
1275                 printf ("  %08lX %c %s ",
1276                         info->start[i],
1277                         sector_erased(info, i) ? 'E' : ' ',
1278                         info->protect[i] ? "RO" : "  ");
1279 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1280                 printf ("  %08lX   %s ",
1281                         info->start[i],
1282                         info->protect[i] ? "RO" : "  ");
1283 #endif
1284         }
1285         putc ('\n');
1286         return;
1287 }
1288
1289 /*-----------------------------------------------------------------------
1290  * This is used in a few places in write_buf() to show programming
1291  * progress.  Making it a function is nasty because it needs to do side
1292  * effect updates to digit and dots.  Repeated code is nasty too, so
1293  * we define it once here.
1294  */
1295 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1296 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1297         if (flash_verbose) { \
1298                 dots -= dots_sub; \
1299                 if ((scale > 0) && (dots <= 0)) { \
1300                         if ((digit % 5) == 0) \
1301                                 printf ("%d", digit / 5); \
1302                         else \
1303                                 putc ('.'); \
1304                         digit--; \
1305                         dots += scale; \
1306                 } \
1307         }
1308 #else
1309 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1310 #endif
1311
1312 /*-----------------------------------------------------------------------
1313  * Copy memory to flash, returns:
1314  * 0 - OK
1315  * 1 - write timeout
1316  * 2 - Flash not erased
1317  */
1318 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
1319 {
1320         ulong wp;
1321         uchar *p;
1322         int aln;
1323         cfiword_t cword;
1324         int i, rc;
1325 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1326         int buffered_size;
1327 #endif
1328 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1329         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1330         int scale = 0;
1331         int dots  = 0;
1332
1333         /*
1334          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1335          */
1336         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1337                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1338                         CONFIG_FLASH_SHOW_PROGRESS);
1339         }
1340 #endif
1341
1342         /* get lower aligned address */
1343         wp = (addr & ~(info->portwidth - 1));
1344
1345         /* handle unaligned start */
1346         if ((aln = addr - wp) != 0) {
1347                 cword.w32 = 0;
1348                 p = (uchar *)wp;
1349                 for (i = 0; i < aln; ++i)
1350                         flash_add_byte (info, &cword, flash_read8(p + i));
1351
1352                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1353                         flash_add_byte (info, &cword, *src++);
1354                         cnt--;
1355                 }
1356                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1357                         flash_add_byte (info, &cword, flash_read8(p + i));
1358
1359                 rc = flash_write_cfiword (info, wp, cword);
1360                 if (rc != 0)
1361                         return rc;
1362
1363                 wp += i;
1364                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1365         }
1366
1367         /* handle the aligned part */
1368 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1369         buffered_size = (info->portwidth / info->chipwidth);
1370         buffered_size *= info->buffer_size;
1371         while (cnt >= info->portwidth) {
1372                 /* prohibit buffer write when buffer_size is 1 */
1373                 if (info->buffer_size == 1) {
1374                         cword.w32 = 0;
1375                         for (i = 0; i < info->portwidth; i++)
1376                                 flash_add_byte (info, &cword, *src++);
1377                         if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1378                                 return rc;
1379                         wp += info->portwidth;
1380                         cnt -= info->portwidth;
1381                         continue;
1382                 }
1383
1384                 /* write buffer until next buffered_size aligned boundary */
1385                 i = buffered_size - (wp % buffered_size);
1386                 if (i > cnt)
1387                         i = cnt;
1388                 if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
1389                         return rc;
1390                 i -= i & (info->portwidth - 1);
1391                 wp += i;
1392                 src += i;
1393                 cnt -= i;
1394                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1395                 /* Only check every once in a while */
1396                 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1397                         return ERR_ABORTED;
1398         }
1399 #else
1400         while (cnt >= info->portwidth) {
1401                 cword.w32 = 0;
1402                 for (i = 0; i < info->portwidth; i++) {
1403                         flash_add_byte (info, &cword, *src++);
1404                 }
1405                 if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
1406                         return rc;
1407                 wp += info->portwidth;
1408                 cnt -= info->portwidth;
1409                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1410                 /* Only check every once in a while */
1411                 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1412                         return ERR_ABORTED;
1413         }
1414 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1415
1416         if (cnt == 0) {
1417                 return (0);
1418         }
1419
1420         /*
1421          * handle unaligned tail bytes
1422          */
1423         cword.w32 = 0;
1424         p = (uchar *)wp;
1425         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1426                 flash_add_byte (info, &cword, *src++);
1427                 --cnt;
1428         }
1429         for (; i < info->portwidth; ++i)
1430                 flash_add_byte (info, &cword, flash_read8(p + i));
1431
1432         return flash_write_cfiword (info, wp, cword);
1433 }
1434
1435 static inline int manufact_match(flash_info_t *info, u32 manu)
1436 {
1437         return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1438 }
1439
1440 /*-----------------------------------------------------------------------
1441  */
1442 #ifdef CONFIG_SYS_FLASH_PROTECTION
1443
1444 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1445 {
1446         if (manufact_match(info, INTEL_MANUFACT)
1447             && info->device_id == NUMONYX_256MBIT) {
1448                 /*
1449                  * see errata called
1450                  * "Numonyx Axcell P33/P30 Specification Update" :)
1451                  */
1452                 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1453                 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1454                                    prot)) {
1455                         /*
1456                          * cmd must come before FLASH_CMD_PROTECT + 20us
1457                          * Disable interrupts which might cause a timeout here.
1458                          */
1459                         int flag = disable_interrupts();
1460                         unsigned short cmd;
1461
1462                         if (prot)
1463                                 cmd = FLASH_CMD_PROTECT_SET;
1464                         else
1465                                 cmd = FLASH_CMD_PROTECT_CLEAR;
1466
1467                         flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1468                         flash_write_cmd(info, sector, 0, cmd);
1469                         /* re-enable interrupts if necessary */
1470                         if (flag)
1471                                 enable_interrupts();
1472                 }
1473                 return 1;
1474         }
1475         return 0;
1476 }
1477
1478 int flash_real_protect (flash_info_t * info, long sector, int prot)
1479 {
1480         int retcode = 0;
1481
1482         switch (info->vendor) {
1483                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1484                 case CFI_CMDSET_INTEL_STANDARD:
1485                 case CFI_CMDSET_INTEL_EXTENDED:
1486                         if (!cfi_protect_bugfix(info, sector, prot)) {
1487                                 flash_write_cmd(info, sector, 0,
1488                                          FLASH_CMD_CLEAR_STATUS);
1489                                 flash_write_cmd(info, sector, 0,
1490                                         FLASH_CMD_PROTECT);
1491                                 if (prot)
1492                                         flash_write_cmd(info, sector, 0,
1493                                                 FLASH_CMD_PROTECT_SET);
1494                                 else
1495                                         flash_write_cmd(info, sector, 0,
1496                                                 FLASH_CMD_PROTECT_CLEAR);
1497
1498                         }
1499                         break;
1500                 case CFI_CMDSET_AMD_EXTENDED:
1501                 case CFI_CMDSET_AMD_STANDARD:
1502                         /* U-Boot only checks the first byte */
1503                         if (manufact_match(info, ATM_MANUFACT)) {
1504                                 if (prot) {
1505                                         flash_unlock_seq (info, 0);
1506                                         flash_write_cmd (info, 0,
1507                                                         info->addr_unlock1,
1508                                                         ATM_CMD_SOFTLOCK_START);
1509                                         flash_unlock_seq (info, 0);
1510                                         flash_write_cmd (info, sector, 0,
1511                                                         ATM_CMD_LOCK_SECT);
1512                                 } else {
1513                                         flash_write_cmd (info, 0,
1514                                                         info->addr_unlock1,
1515                                                         AMD_CMD_UNLOCK_START);
1516                                         if (info->device_id == ATM_ID_BV6416)
1517                                                 flash_write_cmd (info, sector,
1518                                                         0, ATM_CMD_UNLOCK_SECT);
1519                                 }
1520                         }
1521                         if (info->legacy_unlock) {
1522                                 int flag = disable_interrupts();
1523                                 int lock_flag;
1524
1525                                 flash_unlock_seq(info, 0);
1526                                 flash_write_cmd(info, 0, info->addr_unlock1,
1527                                                 AMD_CMD_SET_PPB_ENTRY);
1528                                 lock_flag = flash_isset(info, sector, 0, 0x01);
1529                                 if (prot) {
1530                                         if (lock_flag) {
1531                                                 flash_write_cmd(info, sector, 0,
1532                                                         AMD_CMD_PPB_LOCK_BC1);
1533                                                 flash_write_cmd(info, sector, 0,
1534                                                         AMD_CMD_PPB_LOCK_BC2);
1535                                         }
1536                                         debug("sector %ld %slocked\n", sector,
1537                                                 lock_flag ? "" : "already ");
1538                                 } else {
1539                                         if (!lock_flag) {
1540                                                 debug("unlock %ld\n", sector);
1541                                                 flash_write_cmd(info, 0, 0,
1542                                                         AMD_CMD_PPB_UNLOCK_BC1);
1543                                                 flash_write_cmd(info, 0, 0,
1544                                                         AMD_CMD_PPB_UNLOCK_BC2);
1545                                         }
1546                                         debug("sector %ld %sunlocked\n", sector,
1547                                                 !lock_flag ? "" : "already ");
1548                                 }
1549                                 if (flag)
1550                                         enable_interrupts();
1551
1552                                 if (flash_status_check(info, sector,
1553                                                 info->erase_blk_tout,
1554                                                 prot ? "protect" : "unprotect"))
1555                                         printf("status check error\n");
1556
1557                                 flash_write_cmd(info, 0, 0,
1558                                                 AMD_CMD_SET_PPB_EXIT_BC1);
1559                                 flash_write_cmd(info, 0, 0,
1560                                                 AMD_CMD_SET_PPB_EXIT_BC2);
1561                         }
1562                         break;
1563 #ifdef CONFIG_FLASH_CFI_LEGACY
1564                 case CFI_CMDSET_AMD_LEGACY:
1565                         flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1566                         flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
1567                         if (prot)
1568                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
1569                         else
1570                                 flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1571 #endif
1572         };
1573
1574         /*
1575          * Flash needs to be in status register read mode for
1576          * flash_full_status_check() to work correctly
1577          */
1578         flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1579         if ((retcode =
1580              flash_full_status_check (info, sector, info->erase_blk_tout,
1581                                       prot ? "protect" : "unprotect")) == 0) {
1582
1583                 info->protect[sector] = prot;
1584
1585                 /*
1586                  * On some of Intel's flash chips (marked via legacy_unlock)
1587                  * unprotect unprotects all locking.
1588                  */
1589                 if ((prot == 0) && (info->legacy_unlock)) {
1590                         flash_sect_t i;
1591
1592                         for (i = 0; i < info->sector_count; i++) {
1593                                 if (info->protect[i])
1594                                         flash_real_protect (info, i, 1);
1595                         }
1596                 }
1597         }
1598         return retcode;
1599 }
1600
1601 /*-----------------------------------------------------------------------
1602  * flash_read_user_serial - read the OneTimeProgramming cells
1603  */
1604 void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
1605                              int len)
1606 {
1607         uchar *src;
1608         uchar *dst;
1609
1610         dst = buffer;
1611         src = flash_map (info, 0, FLASH_OFFSET_USER_PROTECTION);
1612         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1613         memcpy (dst, src + offset, len);
1614         flash_write_cmd (info, 0, 0, info->cmd_reset);
1615         udelay(1);
1616         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1617 }
1618
1619 /*
1620  * flash_read_factory_serial - read the device Id from the protection area
1621  */
1622 void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
1623                                 int len)
1624 {
1625         uchar *src;
1626
1627         src = flash_map (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1628         flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
1629         memcpy (buffer, src + offset, len);
1630         flash_write_cmd (info, 0, 0, info->cmd_reset);
1631         udelay(1);
1632         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1633 }
1634
1635 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1636
1637 /*-----------------------------------------------------------------------
1638  * Reverse the order of the erase regions in the CFI QRY structure.
1639  * This is needed for chips that are either a) correctly detected as
1640  * top-boot, or b) buggy.
1641  */
1642 static void cfi_reverse_geometry(struct cfi_qry *qry)
1643 {
1644         unsigned int i, j;
1645         u32 tmp;
1646
1647         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1648                 tmp = get_unaligned(&(qry->erase_region_info[i]));
1649                 put_unaligned(get_unaligned(&(qry->erase_region_info[j])),
1650                               &(qry->erase_region_info[i]));
1651                 put_unaligned(tmp, &(qry->erase_region_info[j]));
1652         }
1653 }
1654
1655 /*-----------------------------------------------------------------------
1656  * read jedec ids from device and set corresponding fields in info struct
1657  *
1658  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1659  *
1660  */
1661 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1662 {
1663         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1664         udelay(1);
1665         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1666         udelay(1000); /* some flash are slow to respond */
1667         info->manufacturer_id = flash_read_uchar (info,
1668                                         FLASH_OFFSET_MANUFACTURER_ID);
1669         info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1670                         flash_read_word (info, FLASH_OFFSET_DEVICE_ID) :
1671                         flash_read_uchar (info, FLASH_OFFSET_DEVICE_ID);
1672         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1673 }
1674
1675 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1676 {
1677         info->cmd_reset = FLASH_CMD_RESET;
1678
1679         cmdset_intel_read_jedec_ids(info);
1680         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1681
1682 #ifdef CONFIG_SYS_FLASH_PROTECTION
1683         /* read legacy lock/unlock bit from intel flash */
1684         if (info->ext_addr) {
1685                 info->legacy_unlock = flash_read_uchar (info,
1686                                 info->ext_addr + 5) & 0x08;
1687         }
1688 #endif
1689
1690         return 0;
1691 }
1692
1693 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1694 {
1695         ushort bankId = 0;
1696         uchar  manuId;
1697         uchar  feature;
1698
1699         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1700         flash_unlock_seq(info, 0);
1701         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1702         udelay(1000); /* some flash are slow to respond */
1703
1704         manuId = flash_read_uchar (info, FLASH_OFFSET_MANUFACTURER_ID);
1705         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1706         while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1707                 bankId += 0x100;
1708                 manuId = flash_read_uchar (info,
1709                         bankId | FLASH_OFFSET_MANUFACTURER_ID);
1710         }
1711         info->manufacturer_id = manuId;
1712
1713         debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1714               info->ext_addr, info->cfi_version);
1715         if (info->ext_addr && info->cfi_version >= 0x3134) {
1716                 /* read software feature (at 0x53) */
1717                 feature = flash_read_uchar(info, info->ext_addr + 0x13);
1718                 debug("feature = 0x%x\n", feature);
1719                 info->sr_supported = feature & 0x1;
1720         }
1721
1722         switch (info->chipwidth){
1723         case FLASH_CFI_8BIT:
1724                 info->device_id = flash_read_uchar (info,
1725                                                 FLASH_OFFSET_DEVICE_ID);
1726                 if (info->device_id == 0x7E) {
1727                         /* AMD 3-byte (expanded) device ids */
1728                         info->device_id2 = flash_read_uchar (info,
1729                                                 FLASH_OFFSET_DEVICE_ID2);
1730                         info->device_id2 <<= 8;
1731                         info->device_id2 |= flash_read_uchar (info,
1732                                                 FLASH_OFFSET_DEVICE_ID3);
1733                 }
1734                 break;
1735         case FLASH_CFI_16BIT:
1736                 info->device_id = flash_read_word (info,
1737                                                 FLASH_OFFSET_DEVICE_ID);
1738                 if ((info->device_id & 0xff) == 0x7E) {
1739                         /* AMD 3-byte (expanded) device ids */
1740                         info->device_id2 = flash_read_uchar (info,
1741                                                 FLASH_OFFSET_DEVICE_ID2);
1742                         info->device_id2 <<= 8;
1743                         info->device_id2 |= flash_read_uchar (info,
1744                                                 FLASH_OFFSET_DEVICE_ID3);
1745                 }
1746                 break;
1747         default:
1748                 break;
1749         }
1750         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1751         udelay(1);
1752 }
1753
1754 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1755 {
1756         info->cmd_reset = AMD_CMD_RESET;
1757         info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1758
1759         cmdset_amd_read_jedec_ids(info);
1760         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1761
1762 #ifdef CONFIG_SYS_FLASH_PROTECTION
1763         if (info->ext_addr) {
1764                 /* read sector protect/unprotect scheme (at 0x49) */
1765                 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1766                         info->legacy_unlock = 1;
1767         }
1768 #endif
1769
1770         return 0;
1771 }
1772
1773 #ifdef CONFIG_FLASH_CFI_LEGACY
1774 static void flash_read_jedec_ids (flash_info_t * info)
1775 {
1776         info->manufacturer_id = 0;
1777         info->device_id       = 0;
1778         info->device_id2      = 0;
1779
1780         switch (info->vendor) {
1781         case CFI_CMDSET_INTEL_PROG_REGIONS:
1782         case CFI_CMDSET_INTEL_STANDARD:
1783         case CFI_CMDSET_INTEL_EXTENDED:
1784                 cmdset_intel_read_jedec_ids(info);
1785                 break;
1786         case CFI_CMDSET_AMD_STANDARD:
1787         case CFI_CMDSET_AMD_EXTENDED:
1788                 cmdset_amd_read_jedec_ids(info);
1789                 break;
1790         default:
1791                 break;
1792         }
1793 }
1794
1795 /*-----------------------------------------------------------------------
1796  * Call board code to request info about non-CFI flash.
1797  * board_flash_get_legacy needs to fill in at least:
1798  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1799  */
1800 static int flash_detect_legacy(phys_addr_t base, int banknum)
1801 {
1802         flash_info_t *info = &flash_info[banknum];
1803
1804         if (board_flash_get_legacy(base, banknum, info)) {
1805                 /* board code may have filled info completely. If not, we
1806                    use JEDEC ID probing. */
1807                 if (!info->vendor) {
1808                         int modes[] = {
1809                                 CFI_CMDSET_AMD_STANDARD,
1810                                 CFI_CMDSET_INTEL_STANDARD
1811                         };
1812                         int i;
1813
1814                         for (i = 0; i < ARRAY_SIZE(modes); i++) {
1815                                 info->vendor = modes[i];
1816                                 info->start[0] =
1817                                         (ulong)map_physmem(base,
1818                                                            info->portwidth,
1819                                                            MAP_NOCACHE);
1820                                 if (info->portwidth == FLASH_CFI_8BIT
1821                                         && info->interface == FLASH_CFI_X8X16) {
1822                                         info->addr_unlock1 = 0x2AAA;
1823                                         info->addr_unlock2 = 0x5555;
1824                                 } else {
1825                                         info->addr_unlock1 = 0x5555;
1826                                         info->addr_unlock2 = 0x2AAA;
1827                                 }
1828                                 flash_read_jedec_ids(info);
1829                                 debug("JEDEC PROBE: ID %x %x %x\n",
1830                                                 info->manufacturer_id,
1831                                                 info->device_id,
1832                                                 info->device_id2);
1833                                 if (jedec_flash_match(info, info->start[0]))
1834                                         break;
1835                                 else
1836                                         unmap_physmem((void *)info->start[0],
1837                                                       info->portwidth);
1838                         }
1839                 }
1840
1841                 switch(info->vendor) {
1842                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1843                 case CFI_CMDSET_INTEL_STANDARD:
1844                 case CFI_CMDSET_INTEL_EXTENDED:
1845                         info->cmd_reset = FLASH_CMD_RESET;
1846                         break;
1847                 case CFI_CMDSET_AMD_STANDARD:
1848                 case CFI_CMDSET_AMD_EXTENDED:
1849                 case CFI_CMDSET_AMD_LEGACY:
1850                         info->cmd_reset = AMD_CMD_RESET;
1851                         break;
1852                 }
1853                 info->flash_id = FLASH_MAN_CFI;
1854                 return 1;
1855         }
1856         return 0; /* use CFI */
1857 }
1858 #else
1859 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1860 {
1861         return 0; /* use CFI */
1862 }
1863 #endif
1864
1865 /*-----------------------------------------------------------------------
1866  * detect if flash is compatible with the Common Flash Interface (CFI)
1867  * http://www.jedec.org/download/search/jesd68.pdf
1868  */
1869 static void flash_read_cfi (flash_info_t *info, void *buf,
1870                 unsigned int start, size_t len)
1871 {
1872         u8 *p = buf;
1873         unsigned int i;
1874
1875         for (i = 0; i < len; i++)
1876                 p[i] = flash_read_uchar(info, start + i);
1877 }
1878
1879 static void __flash_cmd_reset(flash_info_t *info)
1880 {
1881         /*
1882          * We do not yet know what kind of commandset to use, so we issue
1883          * the reset command in both Intel and AMD variants, in the hope
1884          * that AMD flash roms ignore the Intel command.
1885          */
1886         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1887         udelay(1);
1888         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1889 }
1890 void flash_cmd_reset(flash_info_t *info)
1891         __attribute__((weak,alias("__flash_cmd_reset")));
1892
1893 static int __flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1894 {
1895         int cfi_offset;
1896
1897         /* Issue FLASH reset command */
1898         flash_cmd_reset(info);
1899
1900         for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi);
1901              cfi_offset++) {
1902                 flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset],
1903                                  FLASH_CMD_CFI);
1904                 if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1905                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1906                     && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1907                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1908                                         sizeof(struct cfi_qry));
1909                         info->interface = le16_to_cpu(qry->interface_desc);
1910
1911                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1912                         debug ("device interface is %d\n",
1913                                info->interface);
1914                         debug ("found port %d chip %d ",
1915                                info->portwidth, info->chipwidth);
1916                         debug ("port %d bits chip %d bits\n",
1917                                info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1918                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1919
1920                         /* calculate command offsets as in the Linux driver */
1921                         info->addr_unlock1 = 0x555;
1922                         info->addr_unlock2 = 0x2aa;
1923
1924                         /*
1925                          * modify the unlock address if we are
1926                          * in compatibility mode
1927                          */
1928                         if (    /* x8/x16 in x8 mode */
1929                                 ((info->chipwidth == FLASH_CFI_BY8) &&
1930                                         (info->interface == FLASH_CFI_X8X16)) ||
1931                                 /* x16/x32 in x16 mode */
1932                                 ((info->chipwidth == FLASH_CFI_BY16) &&
1933                                         (info->interface == FLASH_CFI_X16X32)))
1934                         {
1935                                 info->addr_unlock1 = 0xaaa;
1936                                 info->addr_unlock2 = 0x555;
1937                         }
1938
1939                         info->name = "CFI conformant";
1940                         return 1;
1941                 }
1942         }
1943
1944         return 0;
1945 }
1946
1947 static int flash_detect_cfi (flash_info_t * info, struct cfi_qry *qry)
1948 {
1949         debug ("flash detect cfi\n");
1950
1951         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1952              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1953                 for (info->chipwidth = FLASH_CFI_BY8;
1954                      info->chipwidth <= info->portwidth;
1955                      info->chipwidth <<= 1)
1956                         if (__flash_detect_cfi(info, qry))
1957                                 return 1;
1958         }
1959         debug ("not found\n");
1960         return 0;
1961 }
1962
1963 /*
1964  * Manufacturer-specific quirks. Add workarounds for geometry
1965  * reversal, etc. here.
1966  */
1967 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1968 {
1969         /* check if flash geometry needs reversal */
1970         if (qry->num_erase_regions > 1) {
1971                 /* reverse geometry if top boot part */
1972                 if (info->cfi_version < 0x3131) {
1973                         /* CFI < 1.1, try to guess from device id */
1974                         if ((info->device_id & 0x80) != 0)
1975                                 cfi_reverse_geometry(qry);
1976                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1977                         /* CFI >= 1.1, deduct from top/bottom flag */
1978                         /* note: ext_addr is valid since cfi_version > 0 */
1979                         cfi_reverse_geometry(qry);
1980                 }
1981         }
1982 }
1983
1984 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1985 {
1986         int reverse_geometry = 0;
1987
1988         /* Check the "top boot" bit in the PRI */
1989         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1990                 reverse_geometry = 1;
1991
1992         /* AT49BV6416(T) list the erase regions in the wrong order.
1993          * However, the device ID is identical with the non-broken
1994          * AT49BV642D they differ in the high byte.
1995          */
1996         if (info->device_id == 0xd6 || info->device_id == 0xd2)
1997                 reverse_geometry = !reverse_geometry;
1998
1999         if (reverse_geometry)
2000                 cfi_reverse_geometry(qry);
2001 }
2002
2003 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
2004 {
2005         /* check if flash geometry needs reversal */
2006         if (qry->num_erase_regions > 1) {
2007                 /* reverse geometry if top boot part */
2008                 if (info->cfi_version < 0x3131) {
2009                         /* CFI < 1.1, guess by device id */
2010                         if (info->device_id == 0x22CA || /* M29W320DT */
2011                             info->device_id == 0x2256 || /* M29W320ET */
2012                             info->device_id == 0x22D7) { /* M29W800DT */
2013                                 cfi_reverse_geometry(qry);
2014                         }
2015                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2016                         /* CFI >= 1.1, deduct from top/bottom flag */
2017                         /* note: ext_addr is valid since cfi_version > 0 */
2018                         cfi_reverse_geometry(qry);
2019                 }
2020         }
2021 }
2022
2023 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2024 {
2025         /*
2026          * SST, for many recent nor parallel flashes, says they are
2027          * CFI-conformant. This is not true, since qry struct.
2028          * reports a std. AMD command set (0x0002), while SST allows to
2029          * erase two different sector sizes for the same memory.
2030          * 64KB sector (SST call it block)  needs 0x30 to be erased.
2031          * 4KB  sector (SST call it sector) needs 0x50 to be erased.
2032          * Since CFI query detect the 4KB number of sectors, users expects
2033          * a sector granularity of 4KB, and it is here set.
2034          */
2035         if (info->device_id == 0x5D23 || /* SST39VF3201B */
2036             info->device_id == 0x5C23) { /* SST39VF3202B */
2037                 /* set sector granularity to 4KB */
2038                 info->cmd_erase_sector=0x50;
2039         }
2040 }
2041
2042 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2043 {
2044         /*
2045          * The M29EW devices seem to report the CFI information wrong
2046          * when it's in 8 bit mode.
2047          * There's an app note from Numonyx on this issue.
2048          * So adjust the buffer size for M29EW while operating in 8-bit mode
2049          */
2050         if (((qry->max_buf_write_size) > 0x8) &&
2051                         (info->device_id == 0x7E) &&
2052                         (info->device_id2 == 0x2201 ||
2053                         info->device_id2 == 0x2301 ||
2054                         info->device_id2 == 0x2801 ||
2055                         info->device_id2 == 0x4801)) {
2056                 debug("Adjusted buffer size on Numonyx flash"
2057                         " M29EW family in 8 bit mode\n");
2058                 qry->max_buf_write_size = 0x8;
2059         }
2060 }
2061
2062 /*
2063  * The following code cannot be run from FLASH!
2064  *
2065  */
2066 ulong flash_get_size (phys_addr_t base, int banknum)
2067 {
2068         flash_info_t *info = &flash_info[banknum];
2069         int i, j;
2070         flash_sect_t sect_cnt;
2071         phys_addr_t sector;
2072         unsigned long tmp;
2073         int size_ratio;
2074         uchar num_erase_regions;
2075         int erase_region_size;
2076         int erase_region_count;
2077         struct cfi_qry qry;
2078         unsigned long max_size;
2079
2080         memset(&qry, 0, sizeof(qry));
2081
2082         info->ext_addr = 0;
2083         info->cfi_version = 0;
2084 #ifdef CONFIG_SYS_FLASH_PROTECTION
2085         info->legacy_unlock = 0;
2086 #endif
2087
2088         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2089
2090         if (flash_detect_cfi (info, &qry)) {
2091                 info->vendor = le16_to_cpu(get_unaligned(&(qry.p_id)));
2092                 info->ext_addr = le16_to_cpu(get_unaligned(&(qry.p_adr)));
2093                 num_erase_regions = qry.num_erase_regions;
2094
2095                 if (info->ext_addr) {
2096                         info->cfi_version = (ushort) flash_read_uchar (info,
2097                                                 info->ext_addr + 3) << 8;
2098                         info->cfi_version |= (ushort) flash_read_uchar (info,
2099                                                 info->ext_addr + 4);
2100                 }
2101
2102 #ifdef DEBUG
2103                 flash_printqry (&qry);
2104 #endif
2105
2106                 switch (info->vendor) {
2107                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2108                 case CFI_CMDSET_INTEL_STANDARD:
2109                 case CFI_CMDSET_INTEL_EXTENDED:
2110                         cmdset_intel_init(info, &qry);
2111                         break;
2112                 case CFI_CMDSET_AMD_STANDARD:
2113                 case CFI_CMDSET_AMD_EXTENDED:
2114                         cmdset_amd_init(info, &qry);
2115                         break;
2116                 default:
2117                         printf("CFI: Unknown command set 0x%x\n",
2118                                         info->vendor);
2119                         /*
2120                          * Unfortunately, this means we don't know how
2121                          * to get the chip back to Read mode. Might
2122                          * as well try an Intel-style reset...
2123                          */
2124                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2125                         return 0;
2126                 }
2127
2128                 /* Do manufacturer-specific fixups */
2129                 switch (info->manufacturer_id) {
2130                 case 0x0001: /* AMD */
2131                 case 0x0037: /* AMIC */
2132                         flash_fixup_amd(info, &qry);
2133                         break;
2134                 case 0x001f:
2135                         flash_fixup_atmel(info, &qry);
2136                         break;
2137                 case 0x0020:
2138                         flash_fixup_stm(info, &qry);
2139                         break;
2140                 case 0x00bf: /* SST */
2141                         flash_fixup_sst(info, &qry);
2142                         break;
2143                 case 0x0089: /* Numonyx */
2144                         flash_fixup_num(info, &qry);
2145                         break;
2146                 }
2147
2148                 debug ("manufacturer is %d\n", info->vendor);
2149                 debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
2150                 debug ("device id is 0x%x\n", info->device_id);
2151                 debug ("device id2 is 0x%x\n", info->device_id2);
2152                 debug ("cfi version is 0x%04x\n", info->cfi_version);
2153
2154                 size_ratio = info->portwidth / info->chipwidth;
2155                 /* if the chip is x8/x16 reduce the ratio by half */
2156                 if ((info->interface == FLASH_CFI_X8X16)
2157                     && (info->chipwidth == FLASH_CFI_BY8)) {
2158                         size_ratio >>= 1;
2159                 }
2160                 debug ("size_ratio %d port %d bits chip %d bits\n",
2161                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2162                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2163                 info->size = 1 << qry.dev_size;
2164                 /* multiply the size by the number of chips */
2165                 info->size *= size_ratio;
2166                 max_size = cfi_flash_bank_size(banknum);
2167                 if (max_size && (info->size > max_size)) {
2168                         debug("[truncated from %ldMiB]", info->size >> 20);
2169                         info->size = max_size;
2170                 }
2171                 debug ("found %d erase regions\n", num_erase_regions);
2172                 sect_cnt = 0;
2173                 sector = base;
2174                 for (i = 0; i < num_erase_regions; i++) {
2175                         if (i > NUM_ERASE_REGIONS) {
2176                                 printf ("%d erase regions found, only %d used\n",
2177                                         num_erase_regions, NUM_ERASE_REGIONS);
2178                                 break;
2179                         }
2180
2181                         tmp = le32_to_cpu(get_unaligned(
2182                                                 &(qry.erase_region_info[i])));
2183                         debug("erase region %u: 0x%08lx\n", i, tmp);
2184
2185                         erase_region_count = (tmp & 0xffff) + 1;
2186                         tmp >>= 16;
2187                         erase_region_size =
2188                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2189                         debug ("erase_region_count = %d erase_region_size = %d\n",
2190                                 erase_region_count, erase_region_size);
2191                         for (j = 0; j < erase_region_count; j++) {
2192                                 if (sector - base >= info->size)
2193                                         break;
2194                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2195                                         printf("ERROR: too many flash sectors\n");
2196                                         break;
2197                                 }
2198                                 info->start[sect_cnt] =
2199                                         (ulong)map_physmem(sector,
2200                                                            info->portwidth,
2201                                                            MAP_NOCACHE);
2202                                 sector += (erase_region_size * size_ratio);
2203
2204                                 /*
2205                                  * Only read protection status from
2206                                  * supported devices (intel...)
2207                                  */
2208                                 switch (info->vendor) {
2209                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2210                                 case CFI_CMDSET_INTEL_EXTENDED:
2211                                 case CFI_CMDSET_INTEL_STANDARD:
2212                                         /*
2213                                          * Set flash to read-id mode. Otherwise
2214                                          * reading protected status is not
2215                                          * guaranteed.
2216                                          */
2217                                         flash_write_cmd(info, sect_cnt, 0,
2218                                                         FLASH_CMD_READ_ID);
2219                                         info->protect[sect_cnt] =
2220                                                 flash_isset (info, sect_cnt,
2221                                                              FLASH_OFFSET_PROTECT,
2222                                                              FLASH_STATUS_PROTECT);
2223                                         flash_write_cmd(info, sect_cnt, 0,
2224                                                         FLASH_CMD_RESET);
2225                                         break;
2226                                 case CFI_CMDSET_AMD_EXTENDED:
2227                                 case CFI_CMDSET_AMD_STANDARD:
2228                                         if (!info->legacy_unlock) {
2229                                                 /* default: not protected */
2230                                                 info->protect[sect_cnt] = 0;
2231                                                 break;
2232                                         }
2233
2234                                         /* Read protection (PPB) from sector */
2235                                         flash_write_cmd(info, 0, 0,
2236                                                         info->cmd_reset);
2237                                         flash_unlock_seq(info, 0);
2238                                         flash_write_cmd(info, 0,
2239                                                         info->addr_unlock1,
2240                                                         FLASH_CMD_READ_ID);
2241                                         info->protect[sect_cnt] =
2242                                                 flash_isset(
2243                                                         info, sect_cnt,
2244                                                         FLASH_OFFSET_PROTECT,
2245                                                         FLASH_STATUS_PROTECT);
2246                                         break;
2247                                 default:
2248                                         /* default: not protected */
2249                                         info->protect[sect_cnt] = 0;
2250                                 }
2251
2252                                 sect_cnt++;
2253                         }
2254                 }
2255
2256                 info->sector_count = sect_cnt;
2257                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2258                 tmp = 1 << qry.block_erase_timeout_typ;
2259                 info->erase_blk_tout = tmp *
2260                         (1 << qry.block_erase_timeout_max);
2261                 tmp = (1 << qry.buf_write_timeout_typ) *
2262                         (1 << qry.buf_write_timeout_max);
2263
2264                 /* round up when converting to ms */
2265                 info->buffer_write_tout = (tmp + 999) / 1000;
2266                 tmp = (1 << qry.word_write_timeout_typ) *
2267                         (1 << qry.word_write_timeout_max);
2268                 /* round up when converting to ms */
2269                 info->write_tout = (tmp + 999) / 1000;
2270                 info->flash_id = FLASH_MAN_CFI;
2271                 if ((info->interface == FLASH_CFI_X8X16) &&
2272                     (info->chipwidth == FLASH_CFI_BY8)) {
2273                         /* XXX - Need to test on x8/x16 in parallel. */
2274                         info->portwidth >>= 1;
2275                 }
2276
2277                 flash_write_cmd (info, 0, 0, info->cmd_reset);
2278         }
2279
2280         return (info->size);
2281 }
2282
2283 #ifdef CONFIG_FLASH_CFI_MTD
2284 void flash_set_verbose(uint v)
2285 {
2286         flash_verbose = v;
2287 }
2288 #endif
2289
2290 static void cfi_flash_set_config_reg(u32 base, u16 val)
2291 {
2292 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2293         /*
2294          * Only set this config register if really defined
2295          * to a valid value (0xffff is invalid)
2296          */
2297         if (val == 0xffff)
2298                 return;
2299
2300         /*
2301          * Set configuration register. Data is "encrypted" in the 16 lower
2302          * address bits.
2303          */
2304         flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2305         flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2306
2307         /*
2308          * Finally issue reset-command to bring device back to
2309          * read-array mode
2310          */
2311         flash_write16(FLASH_CMD_RESET, (void *)base);
2312 #endif
2313 }
2314
2315 /*-----------------------------------------------------------------------
2316  */
2317
2318 static void flash_protect_default(void)
2319 {
2320 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2321         int i;
2322         struct apl_s {
2323                 ulong start;
2324                 ulong size;
2325         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2326 #endif
2327
2328         /* Monitor protection ON by default */
2329 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2330         (!defined(CONFIG_MONITOR_IS_IN_RAM))
2331         flash_protect(FLAG_PROTECT_SET,
2332                        CONFIG_SYS_MONITOR_BASE,
2333                        CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
2334                        flash_get_info(CONFIG_SYS_MONITOR_BASE));
2335 #endif
2336
2337         /* Environment protection ON by default */
2338 #ifdef CONFIG_ENV_IS_IN_FLASH
2339         flash_protect(FLAG_PROTECT_SET,
2340                        CONFIG_ENV_ADDR,
2341                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2342                        flash_get_info(CONFIG_ENV_ADDR));
2343 #endif
2344
2345         /* Redundant environment protection ON by default */
2346 #ifdef CONFIG_ENV_ADDR_REDUND
2347         flash_protect(FLAG_PROTECT_SET,
2348                        CONFIG_ENV_ADDR_REDUND,
2349                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2350                        flash_get_info(CONFIG_ENV_ADDR_REDUND));
2351 #endif
2352
2353 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2354         for (i = 0; i < ARRAY_SIZE(apl); i++) {
2355                 debug("autoprotecting from %08lx to %08lx\n",
2356                       apl[i].start, apl[i].start + apl[i].size - 1);
2357                 flash_protect(FLAG_PROTECT_SET,
2358                                apl[i].start,
2359                                apl[i].start + apl[i].size - 1,
2360                                flash_get_info(apl[i].start));
2361         }
2362 #endif
2363 }
2364
2365 unsigned long flash_init (void)
2366 {
2367         unsigned long size = 0;
2368         int i;
2369
2370 #ifdef CONFIG_SYS_FLASH_PROTECTION
2371         /* read environment from EEPROM */
2372         char s[64];
2373         env_get_f("unlock", s, sizeof(s));
2374 #endif
2375
2376 #ifdef CONFIG_CFI_FLASH /* for driver model */
2377         cfi_flash_init_dm();
2378 #endif
2379
2380         /* Init: no FLASHes known */
2381         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2382                 flash_info[i].flash_id = FLASH_UNKNOWN;
2383
2384                 /* Optionally write flash configuration register */
2385                 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2386                                          cfi_flash_config_reg(i));
2387
2388                 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2389                         flash_get_size(cfi_flash_bank_addr(i), i);
2390                 size += flash_info[i].size;
2391                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2392 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2393                         printf ("## Unknown flash on Bank %d "
2394                                 "- Size = 0x%08lx = %ld MB\n",
2395                                 i+1, flash_info[i].size,
2396                                 flash_info[i].size >> 20);
2397 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2398                 }
2399 #ifdef CONFIG_SYS_FLASH_PROTECTION
2400                 else if (strcmp(s, "yes") == 0) {
2401                         /*
2402                          * Only the U-Boot image and it's environment
2403                          * is protected, all other sectors are
2404                          * unprotected (unlocked) if flash hardware
2405                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2406                          * and the environment variable "unlock" is
2407                          * set to "yes".
2408                          */
2409                         if (flash_info[i].legacy_unlock) {
2410                                 int k;
2411
2412                                 /*
2413                                  * Disable legacy_unlock temporarily,
2414                                  * since flash_real_protect would
2415                                  * relock all other sectors again
2416                                  * otherwise.
2417                                  */
2418                                 flash_info[i].legacy_unlock = 0;
2419
2420                                 /*
2421                                  * Legacy unlocking (e.g. Intel J3) ->
2422                                  * unlock only one sector. This will
2423                                  * unlock all sectors.
2424                                  */
2425                                 flash_real_protect (&flash_info[i], 0, 0);
2426
2427                                 flash_info[i].legacy_unlock = 1;
2428
2429                                 /*
2430                                  * Manually mark other sectors as
2431                                  * unlocked (unprotected)
2432                                  */
2433                                 for (k = 1; k < flash_info[i].sector_count; k++)
2434                                         flash_info[i].protect[k] = 0;
2435                         } else {
2436                                 /*
2437                                  * No legancy unlocking -> unlock all sectors
2438                                  */
2439                                 flash_protect (FLAG_PROTECT_CLEAR,
2440                                                flash_info[i].start[0],
2441                                                flash_info[i].start[0]
2442                                                + flash_info[i].size - 1,
2443                                                &flash_info[i]);
2444                         }
2445                 }
2446 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2447         }
2448
2449         flash_protect_default();
2450 #ifdef CONFIG_FLASH_CFI_MTD
2451         cfi_mtd_init();
2452 #endif
2453
2454         return (size);
2455 }
2456
2457 #ifdef CONFIG_CFI_FLASH /* for driver model */
2458 static int cfi_flash_probe(struct udevice *dev)
2459 {
2460         void *blob = (void *)gd->fdt_blob;
2461         int node = dev_of_offset(dev);
2462         const fdt32_t *cell;
2463         phys_addr_t addr;
2464         int parent, addrc, sizec;
2465         int len, idx;
2466
2467         parent = fdt_parent_offset(blob, node);
2468         fdt_support_default_count_cells(blob, parent, &addrc, &sizec);
2469         /* decode regs, there may be multiple reg tuples. */
2470         cell = fdt_getprop(blob, node, "reg", &len);
2471         if (!cell)
2472                 return -ENOENT;
2473         idx = 0;
2474         len /= sizeof(fdt32_t);
2475         while (idx < len) {
2476                 addr = fdt_translate_address((void *)blob,
2477                                              node, cell + idx);
2478                 flash_info[cfi_flash_num_flash_banks].dev = dev;
2479                 flash_info[cfi_flash_num_flash_banks].base = addr;
2480                 cfi_flash_num_flash_banks++;
2481                 idx += addrc + sizec;
2482         }
2483         gd->bd->bi_flashstart = flash_info[0].base;
2484
2485         return 0;
2486 }
2487
2488 static const struct udevice_id cfi_flash_ids[] = {
2489         { .compatible = "cfi-flash" },
2490         { .compatible = "jedec-flash" },
2491         {}
2492 };
2493
2494 U_BOOT_DRIVER(cfi_flash) = {
2495         .name   = "cfi_flash",
2496         .id     = UCLASS_MTD,
2497         .of_match = cfi_flash_ids,
2498         .probe = cfi_flash_probe,
2499 };
2500 #endif /* CONFIG_CFI_FLASH */