git.sur5r.net Git - u-boot/blob - 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
 273                         if (c >= 0x20 && c <= 0x7e)
 274                                 debug("%c", c);
 275                         else
 276                                 debug(".");
 277                 }
 278                 debug("\n");
 279         }
 280 }
 281 #endif
 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  * read a long word by picking the least significant byte of each maximum
 316  * port size word. Swap for ppc format.
 317  */
 318 static ulong flash_read_long (flash_info_t *info, flash_sect_t sect,
 319                               uint offset)
 320 {
 321         uchar *addr;
 322         ulong retval;
 323
 324 #ifdef DEBUG
 325         int x;
 326 #endif
 327         addr = flash_map(info, sect, offset);
 328
 329 #ifdef DEBUG
 330         debug("long addr is at %p info->portwidth = %d\n", addr,
 331                info->portwidth);
 332         for (x = 0; x < 4 * info->portwidth; x++)
 333                 debug("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
 334 #endif
 335 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 336         retval = ((flash_read8(addr) << 16) |
 337                   (flash_read8(addr + info->portwidth) << 24) |
 338                   (flash_read8(addr + 2 * info->portwidth)) |
 339                   (flash_read8(addr + 3 * info->portwidth) << 8));
 340 #else
 341         retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
 342                   (flash_read8(addr + info->portwidth - 1) << 16) |
 343                   (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
 344                   (flash_read8(addr + 3 * info->portwidth - 1)));
 345 #endif
 346         flash_unmap(info, sect, offset, addr);
 347
 348         return retval;
 349 }
 350
 351 /*
 352  * Write a proper sized command to the correct address
 353  */
 354 static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
 355                             uint offset, u32 cmd)
 356 {
 357         void *addr;
 358         cfiword_t cword;
 359
 360         addr = flash_map(info, sect, offset);
 361         flash_make_cmd(info, cmd, &cword);
 362         switch (info->portwidth) {
 363         case FLASH_CFI_8BIT:
 364                 debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
 365                        cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 366                 flash_write8(cword.w8, addr);
 367                 break;
 368         case FLASH_CFI_16BIT:
 369                 debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
 370                        cmd, cword.w16,
 371                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 372                 flash_write16(cword.w16, addr);
 373                 break;
 374         case FLASH_CFI_32BIT:
 375                 debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr,
 376                        cmd, cword.w32,
 377                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 378                 flash_write32(cword.w32, addr);
 379                 break;
 380         case FLASH_CFI_64BIT:
 381 #ifdef DEBUG
 382                 {
 383                         char str[20];
 384
 385                         print_longlong(str, cword.w64);
 386
 387                         debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 388                                addr, cmd, str,
 389                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 390                 }
 391 #endif
 392                 flash_write64(cword.w64, addr);
 393                 break;
 394         }
 395
 396         /* Ensure all the instructions are fully finished */
 397         sync();
 398
 399         flash_unmap(info, sect, offset, addr);
 400 }
 401
 402 static void flash_unlock_seq(flash_info_t *info, flash_sect_t sect)
 403 {
 404         flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
 405         flash_write_cmd(info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
 406 }
 407
 408 /*-----------------------------------------------------------------------
 409  */
 410 static int flash_isequal(flash_info_t *info, flash_sect_t sect,
 411                           uint offset, uchar cmd)
 412 {
 413         void *addr;
 414         cfiword_t cword;
 415         int retval;
 416
 417         addr = flash_map(info, sect, offset);
 418         flash_make_cmd(info, cmd, &cword);
 419
 420         debug("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
 421         switch (info->portwidth) {
 422         case FLASH_CFI_8BIT:
 423                 debug("is= %x %x\n", flash_read8(addr), cword.w8);
 424                 retval = (flash_read8(addr) == cword.w8);
 425                 break;
 426         case FLASH_CFI_16BIT:
 427                 debug("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16);
 428                 retval = (flash_read16(addr) == cword.w16);
 429                 break;
 430         case FLASH_CFI_32BIT:
 431                 debug("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32);
 432                 retval = (flash_read32(addr) == cword.w32);
 433                 break;
 434         case FLASH_CFI_64BIT:
 435 #ifdef DEBUG
 436                 {
 437                         char str1[20];
 438                         char str2[20];
 439
 440                         print_longlong(str1, flash_read64(addr));
 441                         print_longlong(str2, cword.w64);
 442                         debug("is= %s %s\n", str1, str2);
 443                 }
 444 #endif
 445                 retval = (flash_read64(addr) == cword.w64);
 446                 break;
 447         default:
 448                 retval = 0;
 449                 break;
 450         }
 451         flash_unmap(info, sect, offset, addr);
 452
 453         return retval;
 454 }
 455
 456 /*-----------------------------------------------------------------------
 457  */
 458 static int flash_isset(flash_info_t *info, flash_sect_t sect,
 459                         uint offset, uchar cmd)
 460 {
 461         void *addr;
 462         cfiword_t cword;
 463         int retval;
 464
 465         addr = flash_map(info, sect, offset);
 466         flash_make_cmd(info, cmd, &cword);
 467         switch (info->portwidth) {
 468         case FLASH_CFI_8BIT:
 469                 retval = ((flash_read8(addr) & cword.w8) == cword.w8);
 470                 break;
 471         case FLASH_CFI_16BIT:
 472                 retval = ((flash_read16(addr) & cword.w16) == cword.w16);
 473                 break;
 474         case FLASH_CFI_32BIT:
 475                 retval = ((flash_read32(addr) & cword.w32) == cword.w32);
 476                 break;
 477         case FLASH_CFI_64BIT:
 478                 retval = ((flash_read64(addr) & cword.w64) == cword.w64);
 479                 break;
 480         default:
 481                 retval = 0;
 482                 break;
 483         }
 484         flash_unmap(info, sect, offset, addr);
 485
 486         return retval;
 487 }
 488
 489 /*-----------------------------------------------------------------------
 490  */
 491 static int flash_toggle(flash_info_t *info, flash_sect_t sect,
 492                          uint offset, uchar cmd)
 493 {
 494         void *addr;
 495         cfiword_t cword;
 496         int retval;
 497
 498         addr = flash_map(info, sect, offset);
 499         flash_make_cmd(info, cmd, &cword);
 500         switch (info->portwidth) {
 501         case FLASH_CFI_8BIT:
 502                 retval = flash_read8(addr) != flash_read8(addr);
 503                 break;
 504         case FLASH_CFI_16BIT:
 505                 retval = flash_read16(addr) != flash_read16(addr);
 506                 break;
 507         case FLASH_CFI_32BIT:
 508                 retval = flash_read32(addr) != flash_read32(addr);
 509                 break;
 510         case FLASH_CFI_64BIT:
 511                 retval = ((flash_read32(addr) != flash_read32(addr)) ||
 512                            (flash_read32(addr + 4) != flash_read32(addr + 4)));
 513                 break;
 514         default:
 515                 retval = 0;
 516                 break;
 517         }
 518         flash_unmap(info, sect, offset, addr);
 519
 520         return retval;
 521 }
 522
 523 /*
 524  * flash_is_busy - check to see if the flash is busy
 525  *
 526  * This routine checks the status of the chip and returns true if the
 527  * chip is busy.
 528  */
 529 static int flash_is_busy(flash_info_t *info, flash_sect_t sect)
 530 {
 531         int retval;
 532
 533         switch (info->vendor) {
 534         case CFI_CMDSET_INTEL_PROG_REGIONS:
 535         case CFI_CMDSET_INTEL_STANDARD:
 536         case CFI_CMDSET_INTEL_EXTENDED:
 537                 retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE);
 538                 break;
 539         case CFI_CMDSET_AMD_STANDARD:
 540         case CFI_CMDSET_AMD_EXTENDED:
 541 #ifdef CONFIG_FLASH_CFI_LEGACY
 542         case CFI_CMDSET_AMD_LEGACY:
 543 #endif
 544                 if (info->sr_supported) {
 545                         flash_write_cmd(info, sect, info->addr_unlock1,
 546                                          FLASH_CMD_READ_STATUS);
 547                         retval = !flash_isset(info, sect, 0,
 548                                                FLASH_STATUS_DONE);
 549                 } else {
 550                         retval = flash_toggle(info, sect, 0,
 551                                                AMD_STATUS_TOGGLE);
 552                 }
 553
 554                 break;
 555         default:
 556                 retval = 0;
 557         }
 558         debug("flash_is_busy: %d\n", retval);
 559         return retval;
 560 }
 561
 562 /*-----------------------------------------------------------------------
 563  *  wait for XSR.7 to be set. Time out with an error if it does not.
 564  *  This routine does not set the flash to read-array mode.
 565  */
 566 static int flash_status_check(flash_info_t *info, flash_sect_t sector,
 567                                ulong tout, char *prompt)
 568 {
 569         ulong start;
 570
 571 #if CONFIG_SYS_HZ != 1000
 572         if ((ulong)CONFIG_SYS_HZ > 100000)
 573                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 574         else
 575                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 576 #endif
 577
 578         /* Wait for command completion */
 579 #ifdef CONFIG_SYS_LOW_RES_TIMER
 580         reset_timer();
 581 #endif
 582         start = get_timer(0);
 583         WATCHDOG_RESET();
 584         while (flash_is_busy(info, sector)) {
 585                 if (get_timer(start) > tout) {
 586                         printf("Flash %s timeout at address %lx data %lx\n",
 587                                 prompt, info->start[sector],
 588                                 flash_read_long(info, sector, 0));
 589                         flash_write_cmd(info, sector, 0, info->cmd_reset);
 590                         udelay(1);
 591                         return ERR_TIMOUT;
 592                 }
 593                 udelay(1);              /* also triggers watchdog */
 594         }
 595         return ERR_OK;
 596 }
 597
 598 /*-----------------------------------------------------------------------
 599  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 600  * do a full status check.
 601  *
 602  * This routine sets the flash to read-array mode.
 603  */
 604 static int flash_full_status_check(flash_info_t *info, flash_sect_t sector,
 605                                     ulong tout, char *prompt)
 606 {
 607         int retcode;
 608
 609         retcode = flash_status_check(info, sector, tout, prompt);
 610         switch (info->vendor) {
 611         case CFI_CMDSET_INTEL_PROG_REGIONS:
 612         case CFI_CMDSET_INTEL_EXTENDED:
 613         case CFI_CMDSET_INTEL_STANDARD:
 614                 if ((retcode == ERR_OK)
 615                     && !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) {
 616                         retcode = ERR_INVAL;
 617                         printf("Flash %s error at address %lx\n", prompt,
 618                                 info->start[sector]);
 619                         if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS |
 620                                          FLASH_STATUS_PSLBS)) {
 621                                 puts("Command Sequence Error.\n");
 622                         } else if (flash_isset(info, sector, 0,
 623                                                 FLASH_STATUS_ECLBS)) {
 624                                 puts("Block Erase Error.\n");
 625                                 retcode = ERR_NOT_ERASED;
 626                         } else if (flash_isset(info, sector, 0,
 627                                                 FLASH_STATUS_PSLBS)) {
 628                                 puts("Locking Error\n");
 629                         }
 630                         if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) {
 631                                 puts("Block locked.\n");
 632                                 retcode = ERR_PROTECTED;
 633                         }
 634                         if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS))
 635                                 puts("Vpp Low Error.\n");
 636                 }
 637                 flash_write_cmd(info, sector, 0, info->cmd_reset);
 638                 udelay(1);
 639                 break;
 640         default:
 641                 break;
 642         }
 643         return retcode;
 644 }
 645
 646 static int use_flash_status_poll(flash_info_t *info)
 647 {
 648 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 649         if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
 650             info->vendor == CFI_CMDSET_AMD_STANDARD)
 651                 return 1;
 652 #endif
 653         return 0;
 654 }
 655
 656 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 657                              ulong tout, char *prompt)
 658 {
 659 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 660         ulong start;
 661         int ready;
 662
 663 #if CONFIG_SYS_HZ != 1000
 664         if ((ulong)CONFIG_SYS_HZ > 100000)
 665                 tout *= (ulong)CONFIG_SYS_HZ / 1000;  /* for a big HZ, avoid overflow */
 666         else
 667                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 668 #endif
 669
 670         /* Wait for command completion */
 671 #ifdef CONFIG_SYS_LOW_RES_TIMER
 672         reset_timer();
 673 #endif
 674         start = get_timer(0);
 675         WATCHDOG_RESET();
 676         while (1) {
 677                 switch (info->portwidth) {
 678                 case FLASH_CFI_8BIT:
 679                         ready = flash_read8(dst) == flash_read8(src);
 680                         break;
 681                 case FLASH_CFI_16BIT:
 682                         ready = flash_read16(dst) == flash_read16(src);
 683                         break;
 684                 case FLASH_CFI_32BIT:
 685                         ready = flash_read32(dst) == flash_read32(src);
 686                         break;
 687                 case FLASH_CFI_64BIT:
 688                         ready = flash_read64(dst) == flash_read64(src);
 689                         break;
 690                 default:
 691                         ready = 0;
 692                         break;
 693                 }
 694                 if (ready)
 695                         break;
 696                 if (get_timer(start) > tout) {
 697                         printf("Flash %s timeout at address %lx data %lx\n",
 698                                prompt, (ulong)dst, (ulong)flash_read8(dst));
 699                         return ERR_TIMOUT;
 700                 }
 701                 udelay(1);              /* also triggers watchdog */
 702         }
 703 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
 704         return ERR_OK;
 705 }
 706
 707 /*-----------------------------------------------------------------------
 708  */
 709 static void flash_add_byte(flash_info_t *info, cfiword_t *cword, uchar c)
 710 {
 711 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 712         unsigned short  w;
 713         unsigned int    l;
 714         unsigned long long ll;
 715 #endif
 716
 717         switch (info->portwidth) {
 718         case FLASH_CFI_8BIT:
 719                 cword->w8 = c;
 720                 break;
 721         case FLASH_CFI_16BIT:
 722 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 723                 w = c;
 724                 w <<= 8;
 725                 cword->w16 = (cword->w16 >> 8) | w;
 726 #else
 727                 cword->w16 = (cword->w16 << 8) | c;
 728 #endif
 729                 break;
 730         case FLASH_CFI_32BIT:
 731 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 732                 l = c;
 733                 l <<= 24;
 734                 cword->w32 = (cword->w32 >> 8) | l;
 735 #else
 736                 cword->w32 = (cword->w32 << 8) | c;
 737 #endif
 738                 break;
 739         case FLASH_CFI_64BIT:
 740 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 741                 ll = c;
 742                 ll <<= 56;
 743                 cword->w64 = (cword->w64 >> 8) | ll;
 744 #else
 745                 cword->w64 = (cword->w64 << 8) | c;
 746 #endif
 747                 break;
 748         }
 749 }
 750
 751 /*
 752  * Loop through the sector table starting from the previously found sector.
 753  * Searches forwards or backwards, dependent on the passed address.
 754  */
 755 static flash_sect_t find_sector(flash_info_t *info, ulong addr)
 756 {
 757         static flash_sect_t saved_sector; /* previously found sector */
 758         static flash_info_t *saved_info; /* previously used flash bank */
 759         flash_sect_t sector = saved_sector;
 760
 761         if ((info != saved_info) || (sector >= info->sector_count))
 762                 sector = 0;
 763
 764         while ((info->start[sector] < addr)
 765                         && (sector < info->sector_count - 1))
 766                 sector++;
 767         while ((info->start[sector] > addr) && (sector > 0))
 768                 /*
 769                  * also decrements the sector in case of an overshot
 770                  * in the first loop
 771                  */
 772                 sector--;
 773
 774         saved_sector = sector;
 775         saved_info = info;
 776         return sector;
 777 }
 778
 779 /*-----------------------------------------------------------------------
 780  */
 781 static int flash_write_cfiword(flash_info_t *info, ulong dest,
 782                                 cfiword_t cword)
 783 {
 784         void *dstaddr = (void *)dest;
 785         int flag;
 786         flash_sect_t sect = 0;
 787         char sect_found = 0;
 788
 789         /* Check if Flash is (sufficiently) erased */
 790         switch (info->portwidth) {
 791         case FLASH_CFI_8BIT:
 792                 flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8);
 793                 break;
 794         case FLASH_CFI_16BIT:
 795                 flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16);
 796                 break;
 797         case FLASH_CFI_32BIT:
 798                 flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32);
 799                 break;
 800         case FLASH_CFI_64BIT:
 801                 flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64);
 802                 break;
 803         default:
 804                 flag = 0;
 805                 break;
 806         }
 807         if (!flag)
 808                 return ERR_NOT_ERASED;
 809
 810         /* Disable interrupts which might cause a timeout here */
 811         flag = disable_interrupts();
 812
 813         switch (info->vendor) {
 814         case CFI_CMDSET_INTEL_PROG_REGIONS:
 815         case CFI_CMDSET_INTEL_EXTENDED:
 816         case CFI_CMDSET_INTEL_STANDARD:
 817                 flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 818                 flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE);
 819                 break;
 820         case CFI_CMDSET_AMD_EXTENDED:
 821         case CFI_CMDSET_AMD_STANDARD:
 822                 sect = find_sector(info, dest);
 823                 flash_unlock_seq(info, sect);
 824                 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 825                 sect_found = 1;
 826                 break;
 827 #ifdef CONFIG_FLASH_CFI_LEGACY
 828         case CFI_CMDSET_AMD_LEGACY:
 829                 sect = find_sector(info, dest);
 830                 flash_unlock_seq(info, 0);
 831                 flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 832                 sect_found = 1;
 833                 break;
 834 #endif
 835         }
 836
 837         switch (info->portwidth) {
 838         case FLASH_CFI_8BIT:
 839                 flash_write8(cword.w8, dstaddr);
 840                 break;
 841         case FLASH_CFI_16BIT:
 842                 flash_write16(cword.w16, dstaddr);
 843                 break;
 844         case FLASH_CFI_32BIT:
 845                 flash_write32(cword.w32, dstaddr);
 846                 break;
 847         case FLASH_CFI_64BIT:
 848                 flash_write64(cword.w64, dstaddr);
 849                 break;
 850         }
 851
 852         /* re-enable interrupts if necessary */
 853         if (flag)
 854                 enable_interrupts();
 855
 856         if (!sect_found)
 857                 sect = find_sector(info, dest);
 858
 859         if (use_flash_status_poll(info))
 860                 return flash_status_poll(info, &cword, dstaddr,
 861                                          info->write_tout, "write");
 862         else
 863                 return flash_full_status_check(info, sect,
 864                                                info->write_tout, "write");
 865 }
 866
 867 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 868
 869 static int flash_write_cfibuffer(flash_info_t *info, ulong dest, uchar *cp,
 870                                   int len)
 871 {
 872         flash_sect_t sector;
 873         int cnt;
 874         int retcode;
 875         void *src = cp;
 876         void *dst = (void *)dest;
 877         void *dst2 = dst;
 878         int flag = 1;
 879         uint offset = 0;
 880         unsigned int shift;
 881         uchar write_cmd;
 882
 883         switch (info->portwidth) {
 884         case FLASH_CFI_8BIT:
 885                 shift = 0;
 886                 break;
 887         case FLASH_CFI_16BIT:
 888                 shift = 1;
 889                 break;
 890         case FLASH_CFI_32BIT:
 891                 shift = 2;
 892                 break;
 893         case FLASH_CFI_64BIT:
 894                 shift = 3;
 895                 break;
 896         default:
 897                 retcode = ERR_INVAL;
 898                 goto out_unmap;
 899         }
 900
 901         cnt = len >> shift;
 902
 903         while ((cnt-- > 0) && (flag == 1)) {
 904                 switch (info->portwidth) {
 905                 case FLASH_CFI_8BIT:
 906                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 907                                 flash_read8(src));
 908                         src += 1, dst2 += 1;
 909                         break;
 910                 case FLASH_CFI_16BIT:
 911                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 912                                 flash_read16(src));
 913                         src += 2, dst2 += 2;
 914                         break;
 915                 case FLASH_CFI_32BIT:
 916                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 917                                 flash_read32(src));
 918                         src += 4, dst2 += 4;
 919                         break;
 920                 case FLASH_CFI_64BIT:
 921                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 922                                 flash_read64(src));
 923                         src += 8, dst2 += 8;
 924                         break;
 925                 }
 926         }
 927         if (!flag) {
 928                 retcode = ERR_NOT_ERASED;
 929                 goto out_unmap;
 930         }
 931
 932         src = cp;
 933         sector = find_sector(info, dest);
 934
 935         switch (info->vendor) {
 936         case CFI_CMDSET_INTEL_PROG_REGIONS:
 937         case CFI_CMDSET_INTEL_STANDARD:
 938         case CFI_CMDSET_INTEL_EXTENDED:
 939                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 940                                         FLASH_CMD_WRITE_BUFFER_PROG : FLASH_CMD_WRITE_TO_BUFFER;
 941                 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 942                 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
 943                 flash_write_cmd(info, sector, 0, write_cmd);
 944                 retcode = flash_status_check(info, sector,
 945                                               info->buffer_write_tout,
 946                                               "write to buffer");
 947                 if (retcode == ERR_OK) {
 948                         /* reduce the number of loops by the width of
 949                          * the port */
 950                         cnt = len >> shift;
 951                         flash_write_cmd(info, sector, 0, cnt - 1);
 952                         while (cnt-- > 0) {
 953                                 switch (info->portwidth) {
 954                                 case FLASH_CFI_8BIT:
 955                                         flash_write8(flash_read8(src), dst);
 956                                         src += 1, dst += 1;
 957                                         break;
 958                                 case FLASH_CFI_16BIT:
 959                                         flash_write16(flash_read16(src), dst);
 960                                         src += 2, dst += 2;
 961                                         break;
 962                                 case FLASH_CFI_32BIT:
 963                                         flash_write32(flash_read32(src), dst);
 964                                         src += 4, dst += 4;
 965                                         break;
 966                                 case FLASH_CFI_64BIT:
 967                                         flash_write64(flash_read64(src), dst);
 968                                         src += 8, dst += 8;
 969                                         break;
 970                                 default:
 971                                         retcode = ERR_INVAL;
 972                                         goto out_unmap;
 973                                 }
 974                         }
 975                         flash_write_cmd(info, sector, 0,
 976                                          FLASH_CMD_WRITE_BUFFER_CONFIRM);
 977                         retcode = flash_full_status_check(
 978                                 info, sector, info->buffer_write_tout,
 979                                 "buffer write");
 980                 }
 981
 982                 break;
 983
 984         case CFI_CMDSET_AMD_STANDARD:
 985         case CFI_CMDSET_AMD_EXTENDED:
 986                 flash_unlock_seq(info, sector);
 987
 988 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 989                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 990 #endif
 991                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
 992                 cnt = len >> shift;
 993                 flash_write_cmd(info, sector, offset, cnt - 1);
 994
 995                 switch (info->portwidth) {
 996                 case FLASH_CFI_8BIT:
 997                         while (cnt-- > 0) {
 998                                 flash_write8(flash_read8(src), dst);
 999                                 src += 1, dst += 1;
1000                         }
1001                         break;
1002                 case FLASH_CFI_16BIT:
1003                         while (cnt-- > 0) {
1004                                 flash_write16(flash_read16(src), dst);
1005                                 src += 2, dst += 2;
1006                         }
1007                         break;
1008                 case FLASH_CFI_32BIT:
1009                         while (cnt-- > 0) {
1010                                 flash_write32(flash_read32(src), dst);
1011                                 src += 4, dst += 4;
1012                         }
1013                         break;
1014                 case FLASH_CFI_64BIT:
1015                         while (cnt-- > 0) {
1016                                 flash_write64(flash_read64(src), dst);
1017                                 src += 8, dst += 8;
1018                         }
1019                         break;
1020                 default:
1021                         retcode = ERR_INVAL;
1022                         goto out_unmap;
1023                 }
1024
1025                 flash_write_cmd(info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1026                 if (use_flash_status_poll(info))
1027                         retcode = flash_status_poll(info, src - (1 << shift),
1028                                                     dst - (1 << shift),
1029                                                     info->buffer_write_tout,
1030                                                     "buffer write");
1031                 else
1032                         retcode = flash_full_status_check(info, sector,
1033                                                           info->buffer_write_tout,
1034                                                           "buffer write");
1035                 break;
1036
1037         default:
1038                 debug("Unknown Command Set\n");
1039                 retcode = ERR_INVAL;
1040                 break;
1041         }
1042
1043 out_unmap:
1044         return retcode;
1045 }
1046 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1047
1048 /*-----------------------------------------------------------------------
1049  */
1050 int flash_erase(flash_info_t *info, int s_first, int s_last)
1051 {
1052         int rcode = 0;
1053         int prot;
1054         flash_sect_t sect;
1055         int st;
1056
1057         if (info->flash_id != FLASH_MAN_CFI) {
1058                 puts("Can't erase unknown flash type - aborted\n");
1059                 return 1;
1060         }
1061         if ((s_first < 0) || (s_first > s_last)) {
1062                 puts("- no sectors to erase\n");
1063                 return 1;
1064         }
1065
1066         prot = 0;
1067         for (sect = s_first; sect <= s_last; ++sect)
1068                 if (info->protect[sect])
1069                         prot++;
1070         if (prot) {
1071                 printf("- Warning: %d protected sectors will not be erased!\n",
1072                         prot);
1073         } else if (flash_verbose) {
1074                 putc('\n');
1075         }
1076
1077         for (sect = s_first; sect <= s_last; sect++) {
1078                 if (ctrlc()) {
1079                         printf("\n");
1080                         return 1;
1081                 }
1082
1083                 if (info->protect[sect] == 0) { /* not protected */
1084 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1085                         int k;
1086                         int size;
1087                         int erased;
1088                         u32 *flash;
1089
1090                         /*
1091                          * Check if whole sector is erased
1092                          */
1093                         size = flash_sector_size(info, sect);
1094                         erased = 1;
1095                         flash = (u32 *)info->start[sect];
1096                         /* divide by 4 for longword access */
1097                         size = size >> 2;
1098                         for (k = 0; k < size; k++) {
1099                                 if (flash_read32(flash++) != 0xffffffff) {
1100                                         erased = 0;
1101                                         break;
1102                                 }
1103                         }
1104                         if (erased) {
1105                                 if (flash_verbose)
1106                                         putc(',');
1107                                 continue;
1108                         }
1109 #endif
1110                         switch (info->vendor) {
1111                         case CFI_CMDSET_INTEL_PROG_REGIONS:
1112                         case CFI_CMDSET_INTEL_STANDARD:
1113                         case CFI_CMDSET_INTEL_EXTENDED:
1114                                 flash_write_cmd(info, sect, 0,
1115                                                  FLASH_CMD_CLEAR_STATUS);
1116                                 flash_write_cmd(info, sect, 0,
1117                                                  FLASH_CMD_BLOCK_ERASE);
1118                                 flash_write_cmd(info, sect, 0,
1119                                                  FLASH_CMD_ERASE_CONFIRM);
1120                                 break;
1121                         case CFI_CMDSET_AMD_STANDARD:
1122                         case CFI_CMDSET_AMD_EXTENDED:
1123                                 flash_unlock_seq(info, sect);
1124                                 flash_write_cmd(info, sect,
1125                                                 info->addr_unlock1,
1126                                                 AMD_CMD_ERASE_START);
1127                                 flash_unlock_seq(info, sect);
1128                                 flash_write_cmd(info, sect, 0,
1129                                                  info->cmd_erase_sector);
1130                                 break;
1131 #ifdef CONFIG_FLASH_CFI_LEGACY
1132                         case CFI_CMDSET_AMD_LEGACY:
1133                                 flash_unlock_seq(info, 0);
1134                                 flash_write_cmd(info, 0, info->addr_unlock1,
1135                                                 AMD_CMD_ERASE_START);
1136                                 flash_unlock_seq(info, 0);
1137                                 flash_write_cmd(info, sect, 0,
1138                                                 AMD_CMD_ERASE_SECTOR);
1139                                 break;
1140 #endif
1141                         default:
1142                                 debug("Unkown flash vendor %d\n",
1143                                        info->vendor);
1144                                 break;
1145                         }
1146
1147                         if (use_flash_status_poll(info)) {
1148                                 cfiword_t cword;
1149                                 void *dest;
1150
1151                                 cword.w64 = 0xffffffffffffffffULL;
1152                                 dest = flash_map(info, sect, 0);
1153                                 st = flash_status_poll(info, &cword, dest,
1154                                                        info->erase_blk_tout, "erase");
1155                                 flash_unmap(info, sect, 0, dest);
1156                         } else
1157                                 st = flash_full_status_check(info, sect,
1158                                                              info->erase_blk_tout,
1159                                                              "erase");
1160                         if (st)
1161                                 rcode = 1;
1162                         else if (flash_verbose)
1163                                 putc('.');
1164                 }
1165         }
1166
1167         if (flash_verbose)
1168                 puts(" done\n");
1169
1170         return rcode;
1171 }
1172
1173 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1174 static int sector_erased(flash_info_t *info, int i)
1175 {
1176         int k;
1177         int size;
1178         u32 *flash;
1179
1180         /*
1181          * Check if whole sector is erased
1182          */
1183         size = flash_sector_size(info, i);
1184         flash = (u32 *)info->start[i];
1185         /* divide by 4 for longword access */
1186         size = size >> 2;
1187
1188         for (k = 0; k < size; k++) {
1189                 if (flash_read32(flash++) != 0xffffffff)
1190                         return 0;       /* not erased */
1191         }
1192
1193         return 1;                       /* erased */
1194 }
1195 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1196
1197 void flash_print_info(flash_info_t *info)
1198 {
1199         int i;
1200
1201         if (info->flash_id != FLASH_MAN_CFI) {
1202                 puts("missing or unknown FLASH type\n");
1203                 return;
1204         }
1205
1206         printf("%s flash (%d x %d)",
1207                 info->name,
1208                 (info->portwidth << 3), (info->chipwidth << 3));
1209         if (info->size < 1024 * 1024)
1210                 printf("  Size: %ld kB in %d Sectors\n",
1211                         info->size >> 10, info->sector_count);
1212         else
1213                 printf("  Size: %ld MB in %d Sectors\n",
1214                         info->size >> 20, info->sector_count);
1215         printf("  ");
1216         switch (info->vendor) {
1217         case CFI_CMDSET_INTEL_PROG_REGIONS:
1218                 printf("Intel Prog Regions");
1219                 break;
1220         case CFI_CMDSET_INTEL_STANDARD:
1221                 printf("Intel Standard");
1222                 break;
1223         case CFI_CMDSET_INTEL_EXTENDED:
1224                 printf("Intel Extended");
1225                 break;
1226         case CFI_CMDSET_AMD_STANDARD:
1227                 printf("AMD Standard");
1228                 break;
1229         case CFI_CMDSET_AMD_EXTENDED:
1230                 printf("AMD Extended");
1231                 break;
1232 #ifdef CONFIG_FLASH_CFI_LEGACY
1233         case CFI_CMDSET_AMD_LEGACY:
1234                 printf("AMD Legacy");
1235                 break;
1236 #endif
1237         default:
1238                 printf("Unknown (%d)", info->vendor);
1239                 break;
1240         }
1241         printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1242                 info->manufacturer_id);
1243         printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1244                 info->device_id);
1245         if ((info->device_id & 0xff) == 0x7E) {
1246                 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1247                 info->device_id2);
1248         }
1249         if ((info->vendor == CFI_CMDSET_AMD_STANDARD) && (info->legacy_unlock))
1250                 printf("\n  Advanced Sector Protection (PPB) enabled");
1251         printf("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1252                 info->erase_blk_tout,
1253                 info->write_tout);
1254         if (info->buffer_size > 1) {
1255                 printf("  Buffer write timeout: %ld ms, "
1256                         "buffer size: %d bytes\n",
1257                 info->buffer_write_tout,
1258                 info->buffer_size);
1259         }
1260
1261         puts("\n  Sector Start Addresses:");
1262         for (i = 0; i < info->sector_count; ++i) {
1263                 if (ctrlc())
1264                         break;
1265                 if ((i % 5) == 0)
1266                         putc('\n');
1267 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1268                 /* print empty and read-only info */
1269                 printf("  %08lX %c %s ",
1270                         info->start[i],
1271                         sector_erased(info, i) ? 'E' : ' ',
1272                         info->protect[i] ? "RO" : "  ");
1273 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1274                 printf("  %08lX   %s ",
1275                         info->start[i],
1276                         info->protect[i] ? "RO" : "  ");
1277 #endif
1278         }
1279         putc('\n');
1280         return;
1281 }
1282
1283 /*-----------------------------------------------------------------------
1284  * This is used in a few places in write_buf() to show programming
1285  * progress.  Making it a function is nasty because it needs to do side
1286  * effect updates to digit and dots.  Repeated code is nasty too, so
1287  * we define it once here.
1288  */
1289 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1290 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1291         if (flash_verbose) { \
1292                 dots -= dots_sub; \
1293                 if ((scale > 0) && (dots <= 0)) { \
1294                         if ((digit % 5) == 0) \
1295                                 printf("%d", digit / 5); \
1296                         else \
1297                                 putc('.'); \
1298                         digit--; \
1299                         dots += scale; \
1300                 } \
1301         }
1302 #else
1303 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1304 #endif
1305
1306 /*-----------------------------------------------------------------------
1307  * Copy memory to flash, returns:
1308  * 0 - OK
1309  * 1 - write timeout
1310  * 2 - Flash not erased
1311  */
1312 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
1313 {
1314         ulong wp;
1315         uchar *p;
1316         int aln;
1317         cfiword_t cword;
1318         int i, rc;
1319 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1320         int buffered_size;
1321 #endif
1322 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1323         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1324         int scale = 0;
1325         int dots  = 0;
1326
1327         /*
1328          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1329          */
1330         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1331                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1332                         CONFIG_FLASH_SHOW_PROGRESS);
1333         }
1334 #endif
1335
1336         /* get lower aligned address */
1337         wp = (addr & ~(info->portwidth - 1));
1338
1339         /* handle unaligned start */
1340         if ((aln = addr - wp) != 0) {
1341                 cword.w32 = 0;
1342                 p = (uchar *)wp;
1343                 for (i = 0; i < aln; ++i)
1344                         flash_add_byte(info, &cword, flash_read8(p + i));
1345
1346                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1347                         flash_add_byte(info, &cword, *src++);
1348                         cnt--;
1349                 }
1350                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1351                         flash_add_byte(info, &cword, flash_read8(p + i));
1352
1353                 rc = flash_write_cfiword(info, wp, cword);
1354                 if (rc != 0)
1355                         return rc;
1356
1357                 wp += i;
1358                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1359         }
1360
1361         /* handle the aligned part */
1362 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1363         buffered_size = (info->portwidth / info->chipwidth);
1364         buffered_size *= info->buffer_size;
1365         while (cnt >= info->portwidth) {
1366                 /* prohibit buffer write when buffer_size is 1 */
1367                 if (info->buffer_size == 1) {
1368                         cword.w32 = 0;
1369                         for (i = 0; i < info->portwidth; i++)
1370                                 flash_add_byte(info, &cword, *src++);
1371                         if ((rc = flash_write_cfiword(info, wp, cword)) != 0)
1372                                 return rc;
1373                         wp += info->portwidth;
1374                         cnt -= info->portwidth;
1375                         continue;
1376                 }
1377
1378                 /* write buffer until next buffered_size aligned boundary */
1379                 i = buffered_size - (wp % buffered_size);
1380                 if (i > cnt)
1381                         i = cnt;
1382                 if ((rc = flash_write_cfibuffer(info, wp, src, i)) != ERR_OK)
1383                         return rc;
1384                 i -= i & (info->portwidth - 1);
1385                 wp += i;
1386                 src += i;
1387                 cnt -= i;
1388                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1389                 /* Only check every once in a while */
1390                 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1391                         return ERR_ABORTED;
1392         }
1393 #else
1394         while (cnt >= info->portwidth) {
1395                 cword.w32 = 0;
1396                 for (i = 0; i < info->portwidth; i++)
1397                         flash_add_byte(info, &cword, *src++);
1398                 if ((rc = flash_write_cfiword(info, wp, cword)) != 0)
1399                         return rc;
1400                 wp += info->portwidth;
1401                 cnt -= info->portwidth;
1402                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1403                 /* Only check every once in a while */
1404                 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1405                         return ERR_ABORTED;
1406         }
1407 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1408
1409         if (cnt == 0)
1410                 return (0);
1411
1412         /*
1413          * handle unaligned tail bytes
1414          */
1415         cword.w32 = 0;
1416         p = (uchar *)wp;
1417         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1418                 flash_add_byte(info, &cword, *src++);
1419                 --cnt;
1420         }
1421         for (; i < info->portwidth; ++i)
1422                 flash_add_byte(info, &cword, flash_read8(p + i));
1423
1424         return flash_write_cfiword(info, wp, cword);
1425 }
1426
1427 static inline int manufact_match(flash_info_t *info, u32 manu)
1428 {
1429         return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1430 }
1431
1432 /*-----------------------------------------------------------------------
1433  */
1434 #ifdef CONFIG_SYS_FLASH_PROTECTION
1435
1436 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1437 {
1438         if (manufact_match(info, INTEL_MANUFACT)
1439             && info->device_id == NUMONYX_256MBIT) {
1440                 /*
1441                  * see errata called
1442                  * "Numonyx Axcell P33/P30 Specification Update" :)
1443                  */
1444                 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1445                 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1446                                    prot)) {
1447                         /*
1448                          * cmd must come before FLASH_CMD_PROTECT + 20us
1449                          * Disable interrupts which might cause a timeout here.
1450                          */
1451                         int flag = disable_interrupts();
1452                         unsigned short cmd;
1453
1454                         if (prot)
1455                                 cmd = FLASH_CMD_PROTECT_SET;
1456                         else
1457                                 cmd = FLASH_CMD_PROTECT_CLEAR;
1458
1459                         flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1460                         flash_write_cmd(info, sector, 0, cmd);
1461                         /* re-enable interrupts if necessary */
1462                         if (flag)
1463                                 enable_interrupts();
1464                 }
1465                 return 1;
1466         }
1467         return 0;
1468 }
1469
1470 int flash_real_protect(flash_info_t *info, long sector, int prot)
1471 {
1472         int retcode = 0;
1473
1474         switch (info->vendor) {
1475         case CFI_CMDSET_INTEL_PROG_REGIONS:
1476         case CFI_CMDSET_INTEL_STANDARD:
1477         case CFI_CMDSET_INTEL_EXTENDED:
1478                 if (!cfi_protect_bugfix(info, sector, prot)) {
1479                         flash_write_cmd(info, sector, 0,
1480                                  FLASH_CMD_CLEAR_STATUS);
1481                         flash_write_cmd(info, sector, 0,
1482                                 FLASH_CMD_PROTECT);
1483                         if (prot)
1484                                 flash_write_cmd(info, sector, 0,
1485                                         FLASH_CMD_PROTECT_SET);
1486                         else
1487                                 flash_write_cmd(info, sector, 0,
1488                                         FLASH_CMD_PROTECT_CLEAR);
1489                 }
1490                 break;
1491         case CFI_CMDSET_AMD_EXTENDED:
1492         case CFI_CMDSET_AMD_STANDARD:
1493                 /* U-Boot only checks the first byte */
1494                 if (manufact_match(info, ATM_MANUFACT)) {
1495                         if (prot) {
1496                                 flash_unlock_seq(info, 0);
1497                                 flash_write_cmd(info, 0,
1498                                                 info->addr_unlock1,
1499                                                 ATM_CMD_SOFTLOCK_START);
1500                                 flash_unlock_seq(info, 0);
1501                                 flash_write_cmd(info, sector, 0,
1502                                                 ATM_CMD_LOCK_SECT);
1503                         } else {
1504                                 flash_write_cmd(info, 0,
1505                                                 info->addr_unlock1,
1506                                                 AMD_CMD_UNLOCK_START);
1507                                 if (info->device_id == ATM_ID_BV6416)
1508                                         flash_write_cmd(info, sector,
1509                                                 0, ATM_CMD_UNLOCK_SECT);
1510                         }
1511                 }
1512                 if (info->legacy_unlock) {
1513                         int flag = disable_interrupts();
1514                         int lock_flag;
1515
1516                         flash_unlock_seq(info, 0);
1517                         flash_write_cmd(info, 0, info->addr_unlock1,
1518                                         AMD_CMD_SET_PPB_ENTRY);
1519                         lock_flag = flash_isset(info, sector, 0, 0x01);
1520                         if (prot) {
1521                                 if (lock_flag) {
1522                                         flash_write_cmd(info, sector, 0,
1523                                                 AMD_CMD_PPB_LOCK_BC1);
1524                                         flash_write_cmd(info, sector, 0,
1525                                                 AMD_CMD_PPB_LOCK_BC2);
1526                                 }
1527                                 debug("sector %ld %slocked\n", sector,
1528                                         lock_flag ? "" : "already ");
1529                         } else {
1530                                 if (!lock_flag) {
1531                                         debug("unlock %ld\n", sector);
1532                                         flash_write_cmd(info, 0, 0,
1533                                                 AMD_CMD_PPB_UNLOCK_BC1);
1534                                         flash_write_cmd(info, 0, 0,
1535                                                 AMD_CMD_PPB_UNLOCK_BC2);
1536                                 }
1537                                 debug("sector %ld %sunlocked\n", sector,
1538                                         !lock_flag ? "" : "already ");
1539                         }
1540                         if (flag)
1541                                 enable_interrupts();
1542
1543                         if (flash_status_check(info, sector,
1544                                         info->erase_blk_tout,
1545                                         prot ? "protect" : "unprotect"))
1546                                 printf("status check error\n");
1547
1548                         flash_write_cmd(info, 0, 0,
1549                                         AMD_CMD_SET_PPB_EXIT_BC1);
1550                         flash_write_cmd(info, 0, 0,
1551                                         AMD_CMD_SET_PPB_EXIT_BC2);
1552                 }
1553                 break;
1554 #ifdef CONFIG_FLASH_CFI_LEGACY
1555         case CFI_CMDSET_AMD_LEGACY:
1556                 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1557                 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1558                 if (prot)
1559                         flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_SET);
1560                 else
1561                         flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
1562 #endif
1563         };
1564
1565         /*
1566          * Flash needs to be in status register read mode for
1567          * flash_full_status_check() to work correctly
1568          */
1569         flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1570         if ((retcode =
1571              flash_full_status_check(info, sector, info->erase_blk_tout,
1572                                       prot ? "protect" : "unprotect")) == 0) {
1573                 info->protect[sector] = prot;
1574
1575                 /*
1576                  * On some of Intel's flash chips (marked via legacy_unlock)
1577                  * unprotect unprotects all locking.
1578                  */
1579                 if ((prot == 0) && (info->legacy_unlock)) {
1580                         flash_sect_t i;
1581
1582                         for (i = 0; i < info->sector_count; i++) {
1583                                 if (info->protect[i])
1584                                         flash_real_protect(info, i, 1);
1585                         }
1586                 }
1587         }
1588         return retcode;
1589 }
1590
1591 /*-----------------------------------------------------------------------
1592  * flash_read_user_serial - read the OneTimeProgramming cells
1593  */
1594 void flash_read_user_serial(flash_info_t *info, void *buffer, int offset,
1595                              int len)
1596 {
1597         uchar *src;
1598         uchar *dst;
1599
1600         dst = buffer;
1601         src = flash_map(info, 0, FLASH_OFFSET_USER_PROTECTION);
1602         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1603         memcpy(dst, src + offset, len);
1604         flash_write_cmd(info, 0, 0, info->cmd_reset);
1605         udelay(1);
1606         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1607 }
1608
1609 /*
1610  * flash_read_factory_serial - read the device Id from the protection area
1611  */
1612 void flash_read_factory_serial(flash_info_t *info, void *buffer, int offset,
1613                                 int len)
1614 {
1615         uchar *src;
1616
1617         src = flash_map(info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1618         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1619         memcpy(buffer, src + offset, len);
1620         flash_write_cmd(info, 0, 0, info->cmd_reset);
1621         udelay(1);
1622         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1623 }
1624
1625 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1626
1627 /*-----------------------------------------------------------------------
1628  * Reverse the order of the erase regions in the CFI QRY structure.
1629  * This is needed for chips that are either a) correctly detected as
1630  * top-boot, or b) buggy.
1631  */
1632 static void cfi_reverse_geometry(struct cfi_qry *qry)
1633 {
1634         unsigned int i, j;
1635         u32 tmp;
1636
1637         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1638                 tmp = get_unaligned(&(qry->erase_region_info[i]));
1639                 put_unaligned(get_unaligned(&(qry->erase_region_info[j])),
1640                               &(qry->erase_region_info[i]));
1641                 put_unaligned(tmp, &(qry->erase_region_info[j]));
1642         }
1643 }
1644
1645 /*-----------------------------------------------------------------------
1646  * read jedec ids from device and set corresponding fields in info struct
1647  *
1648  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1649  *
1650  */
1651 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1652 {
1653         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1654         udelay(1);
1655         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1656         udelay(1000); /* some flash are slow to respond */
1657         info->manufacturer_id = flash_read_uchar(info,
1658                                         FLASH_OFFSET_MANUFACTURER_ID);
1659         info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1660                         flash_read_word(info, FLASH_OFFSET_DEVICE_ID) :
1661                         flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID);
1662         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1663 }
1664
1665 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1666 {
1667         info->cmd_reset = FLASH_CMD_RESET;
1668
1669         cmdset_intel_read_jedec_ids(info);
1670         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1671
1672 #ifdef CONFIG_SYS_FLASH_PROTECTION
1673         /* read legacy lock/unlock bit from intel flash */
1674         if (info->ext_addr) {
1675                 info->legacy_unlock = flash_read_uchar(info,
1676                                 info->ext_addr + 5) & 0x08;
1677         }
1678 #endif
1679
1680         return 0;
1681 }
1682
1683 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1684 {
1685         ushort bankId = 0;
1686         uchar  manuId;
1687         uchar  feature;
1688
1689         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1690         flash_unlock_seq(info, 0);
1691         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1692         udelay(1000); /* some flash are slow to respond */
1693
1694         manuId = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID);
1695         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1696         while (manuId == FLASH_CONTINUATION_CODE && bankId < 0x800) {
1697                 bankId += 0x100;
1698                 manuId = flash_read_uchar(info,
1699                         bankId | FLASH_OFFSET_MANUFACTURER_ID);
1700         }
1701         info->manufacturer_id = manuId;
1702
1703         debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1704               info->ext_addr, info->cfi_version);
1705         if (info->ext_addr && info->cfi_version >= 0x3134) {
1706                 /* read software feature (at 0x53) */
1707                 feature = flash_read_uchar(info, info->ext_addr + 0x13);
1708                 debug("feature = 0x%x\n", feature);
1709                 info->sr_supported = feature & 0x1;
1710         }
1711
1712         switch (info->chipwidth) {
1713         case FLASH_CFI_8BIT:
1714                 info->device_id = flash_read_uchar(info,
1715                                                 FLASH_OFFSET_DEVICE_ID);
1716                 if (info->device_id == 0x7E) {
1717                         /* AMD 3-byte (expanded) device ids */
1718                         info->device_id2 = flash_read_uchar(info,
1719                                                 FLASH_OFFSET_DEVICE_ID2);
1720                         info->device_id2 <<= 8;
1721                         info->device_id2 |= flash_read_uchar(info,
1722                                                 FLASH_OFFSET_DEVICE_ID3);
1723                 }
1724                 break;
1725         case FLASH_CFI_16BIT:
1726                 info->device_id = flash_read_word(info,
1727                                                 FLASH_OFFSET_DEVICE_ID);
1728                 if ((info->device_id & 0xff) == 0x7E) {
1729                         /* AMD 3-byte (expanded) device ids */
1730                         info->device_id2 = flash_read_uchar(info,
1731                                                 FLASH_OFFSET_DEVICE_ID2);
1732                         info->device_id2 <<= 8;
1733                         info->device_id2 |= flash_read_uchar(info,
1734                                                 FLASH_OFFSET_DEVICE_ID3);
1735                 }
1736                 break;
1737         default:
1738                 break;
1739         }
1740         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1741         udelay(1);
1742 }
1743
1744 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1745 {
1746         info->cmd_reset = AMD_CMD_RESET;
1747         info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1748
1749         cmdset_amd_read_jedec_ids(info);
1750         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1751
1752 #ifdef CONFIG_SYS_FLASH_PROTECTION
1753         if (info->ext_addr) {
1754                 /* read sector protect/unprotect scheme (at 0x49) */
1755                 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1756                         info->legacy_unlock = 1;
1757         }
1758 #endif
1759
1760         return 0;
1761 }
1762
1763 #ifdef CONFIG_FLASH_CFI_LEGACY
1764 static void flash_read_jedec_ids(flash_info_t *info)
1765 {
1766         info->manufacturer_id = 0;
1767         info->device_id       = 0;
1768         info->device_id2      = 0;
1769
1770         switch (info->vendor) {
1771         case CFI_CMDSET_INTEL_PROG_REGIONS:
1772         case CFI_CMDSET_INTEL_STANDARD:
1773         case CFI_CMDSET_INTEL_EXTENDED:
1774                 cmdset_intel_read_jedec_ids(info);
1775                 break;
1776         case CFI_CMDSET_AMD_STANDARD:
1777         case CFI_CMDSET_AMD_EXTENDED:
1778                 cmdset_amd_read_jedec_ids(info);
1779                 break;
1780         default:
1781                 break;
1782         }
1783 }
1784
1785 /*-----------------------------------------------------------------------
1786  * Call board code to request info about non-CFI flash.
1787  * board_flash_get_legacy needs to fill in at least:
1788  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1789  */
1790 static int flash_detect_legacy(phys_addr_t base, int banknum)
1791 {
1792         flash_info_t *info = &flash_info[banknum];
1793
1794         if (board_flash_get_legacy(base, banknum, info)) {
1795                 /* board code may have filled info completely. If not, we
1796                    use JEDEC ID probing. */
1797                 if (!info->vendor) {
1798                         int modes[] = {
1799                                 CFI_CMDSET_AMD_STANDARD,
1800                                 CFI_CMDSET_INTEL_STANDARD
1801                         };
1802                         int i;
1803
1804                         for (i = 0; i < ARRAY_SIZE(modes); i++) {
1805                                 info->vendor = modes[i];
1806                                 info->start[0] =
1807                                         (ulong)map_physmem(base,
1808                                                            info->portwidth,
1809                                                            MAP_NOCACHE);
1810                                 if (info->portwidth == FLASH_CFI_8BIT
1811                                         && info->interface == FLASH_CFI_X8X16) {
1812                                         info->addr_unlock1 = 0x2AAA;
1813                                         info->addr_unlock2 = 0x5555;
1814                                 } else {
1815                                         info->addr_unlock1 = 0x5555;
1816                                         info->addr_unlock2 = 0x2AAA;
1817                                 }
1818                                 flash_read_jedec_ids(info);
1819                                 debug("JEDEC PROBE: ID %x %x %x\n",
1820                                                 info->manufacturer_id,
1821                                                 info->device_id,
1822                                                 info->device_id2);
1823                                 if (jedec_flash_match(info, info->start[0]))
1824                                         break;
1825                                 else
1826                                         unmap_physmem((void *)info->start[0],
1827                                                       info->portwidth);
1828                         }
1829                 }
1830
1831                 switch (info->vendor) {
1832                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1833                 case CFI_CMDSET_INTEL_STANDARD:
1834                 case CFI_CMDSET_INTEL_EXTENDED:
1835                         info->cmd_reset = FLASH_CMD_RESET;
1836                         break;
1837                 case CFI_CMDSET_AMD_STANDARD:
1838                 case CFI_CMDSET_AMD_EXTENDED:
1839                 case CFI_CMDSET_AMD_LEGACY:
1840                         info->cmd_reset = AMD_CMD_RESET;
1841                         break;
1842                 }
1843                 info->flash_id = FLASH_MAN_CFI;
1844                 return 1;
1845         }
1846         return 0; /* use CFI */
1847 }
1848 #else
1849 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1850 {
1851         return 0; /* use CFI */
1852 }
1853 #endif
1854
1855 /*-----------------------------------------------------------------------
1856  * detect if flash is compatible with the Common Flash Interface (CFI)
1857  * http://www.jedec.org/download/search/jesd68.pdf
1858  */
1859 static void flash_read_cfi(flash_info_t *info, void *buf,
1860                 unsigned int start, size_t len)
1861 {
1862         u8 *p = buf;
1863         unsigned int i;
1864
1865         for (i = 0; i < len; i++)
1866                 p[i] = flash_read_uchar(info, start + i);
1867 }
1868
1869 static void __flash_cmd_reset(flash_info_t *info)
1870 {
1871         /*
1872          * We do not yet know what kind of commandset to use, so we issue
1873          * the reset command in both Intel and AMD variants, in the hope
1874          * that AMD flash roms ignore the Intel command.
1875          */
1876         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1877         udelay(1);
1878         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1879 }
1880
1881 void flash_cmd_reset(flash_info_t *info)
1882         __attribute__((weak, alias("__flash_cmd_reset")));
1883
1884 static int __flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1885 {
1886         int cfi_offset;
1887
1888         /* Issue FLASH reset command */
1889         flash_cmd_reset(info);
1890
1891         for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi);
1892              cfi_offset++) {
1893                 flash_write_cmd(info, 0, flash_offset_cfi[cfi_offset],
1894                                  FLASH_CMD_CFI);
1895                 if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
1896                     && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
1897                     && flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1898                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1899                                         sizeof(struct cfi_qry));
1900                         info->interface = le16_to_cpu(qry->interface_desc);
1901
1902                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1903                         debug("device interface is %d\n",
1904                                info->interface);
1905                         debug("found port %d chip %d ",
1906                                info->portwidth, info->chipwidth);
1907                         debug("port %d bits chip %d bits\n",
1908                                info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1909                                info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1910
1911                         /* calculate command offsets as in the Linux driver */
1912                         info->addr_unlock1 = 0x555;
1913                         info->addr_unlock2 = 0x2aa;
1914
1915                         /*
1916                          * modify the unlock address if we are
1917                          * in compatibility mode
1918                          */
1919                         if (/* x8/x16 in x8 mode */
1920                             ((info->chipwidth == FLASH_CFI_BY8) &&
1921                                 (info->interface == FLASH_CFI_X8X16)) ||
1922                             /* x16/x32 in x16 mode */
1923                             ((info->chipwidth == FLASH_CFI_BY16) &&
1924                                 (info->interface == FLASH_CFI_X16X32)))
1925                         {
1926                                 info->addr_unlock1 = 0xaaa;
1927                                 info->addr_unlock2 = 0x555;
1928                         }
1929
1930                         info->name = "CFI conformant";
1931                         return 1;
1932                 }
1933         }
1934
1935         return 0;
1936 }
1937
1938 static int flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1939 {
1940         debug("flash detect cfi\n");
1941
1942         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1943              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1944                 for (info->chipwidth = FLASH_CFI_BY8;
1945                      info->chipwidth <= info->portwidth;
1946                      info->chipwidth <<= 1)
1947                         if (__flash_detect_cfi(info, qry))
1948                                 return 1;
1949         }
1950         debug("not found\n");
1951         return 0;
1952 }
1953
1954 /*
1955  * Manufacturer-specific quirks. Add workarounds for geometry
1956  * reversal, etc. here.
1957  */
1958 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1959 {
1960         /* check if flash geometry needs reversal */
1961         if (qry->num_erase_regions > 1) {
1962                 /* reverse geometry if top boot part */
1963                 if (info->cfi_version < 0x3131) {
1964                         /* CFI < 1.1, try to guess from device id */
1965                         if ((info->device_id & 0x80) != 0)
1966                                 cfi_reverse_geometry(qry);
1967                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1968                         /* CFI >= 1.1, deduct from top/bottom flag */
1969                         /* note: ext_addr is valid since cfi_version > 0 */
1970                         cfi_reverse_geometry(qry);
1971                 }
1972         }
1973 }
1974
1975 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1976 {
1977         int reverse_geometry = 0;
1978
1979         /* Check the "top boot" bit in the PRI */
1980         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1981                 reverse_geometry = 1;
1982
1983         /* AT49BV6416(T) list the erase regions in the wrong order.
1984          * However, the device ID is identical with the non-broken
1985          * AT49BV642D they differ in the high byte.
1986          */
1987         if (info->device_id == 0xd6 || info->device_id == 0xd2)
1988                 reverse_geometry = !reverse_geometry;
1989
1990         if (reverse_geometry)
1991                 cfi_reverse_geometry(qry);
1992 }
1993
1994 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
1995 {
1996         /* check if flash geometry needs reversal */
1997         if (qry->num_erase_regions > 1) {
1998                 /* reverse geometry if top boot part */
1999                 if (info->cfi_version < 0x3131) {
2000                         /* CFI < 1.1, guess by device id */
2001                         if (info->device_id == 0x22CA || /* M29W320DT */
2002                             info->device_id == 0x2256 || /* M29W320ET */
2003                             info->device_id == 0x22D7) { /* M29W800DT */
2004                                 cfi_reverse_geometry(qry);
2005                         }
2006                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2007                         /* CFI >= 1.1, deduct from top/bottom flag */
2008                         /* note: ext_addr is valid since cfi_version > 0 */
2009                         cfi_reverse_geometry(qry);
2010                 }
2011         }
2012 }
2013
2014 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2015 {
2016         /*
2017          * SST, for many recent nor parallel flashes, says they are
2018          * CFI-conformant. This is not true, since qry struct.
2019          * reports a std. AMD command set (0x0002), while SST allows to
2020          * erase two different sector sizes for the same memory.
2021          * 64KB sector (SST call it block)  needs 0x30 to be erased.
2022          * 4KB  sector (SST call it sector) needs 0x50 to be erased.
2023          * Since CFI query detect the 4KB number of sectors, users expects
2024          * a sector granularity of 4KB, and it is here set.
2025          */
2026         if (info->device_id == 0x5D23 || /* SST39VF3201B */
2027             info->device_id == 0x5C23) { /* SST39VF3202B */
2028                 /* set sector granularity to 4KB */
2029                 info->cmd_erase_sector = 0x50;
2030         }
2031 }
2032
2033 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2034 {
2035         /*
2036          * The M29EW devices seem to report the CFI information wrong
2037          * when it's in 8 bit mode.
2038          * There's an app note from Numonyx on this issue.
2039          * So adjust the buffer size for M29EW while operating in 8-bit mode
2040          */
2041         if (((qry->max_buf_write_size) > 0x8) &&
2042                         (info->device_id == 0x7E) &&
2043                         (info->device_id2 == 0x2201 ||
2044                         info->device_id2 == 0x2301 ||
2045                         info->device_id2 == 0x2801 ||
2046                         info->device_id2 == 0x4801)) {
2047                 debug("Adjusted buffer size on Numonyx flash"
2048                         " M29EW family in 8 bit mode\n");
2049                 qry->max_buf_write_size = 0x8;
2050         }
2051 }
2052
2053 /*
2054  * The following code cannot be run from FLASH!
2055  *
2056  */
2057 ulong flash_get_size(phys_addr_t base, int banknum)
2058 {
2059         flash_info_t *info = &flash_info[banknum];
2060         int i, j;
2061         flash_sect_t sect_cnt;
2062         phys_addr_t sector;
2063         unsigned long tmp;
2064         int size_ratio;
2065         uchar num_erase_regions;
2066         int erase_region_size;
2067         int erase_region_count;
2068         struct cfi_qry qry;
2069         unsigned long max_size;
2070
2071         memset(&qry, 0, sizeof(qry));
2072
2073         info->ext_addr = 0;
2074         info->cfi_version = 0;
2075 #ifdef CONFIG_SYS_FLASH_PROTECTION
2076         info->legacy_unlock = 0;
2077 #endif
2078
2079         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2080
2081         if (flash_detect_cfi(info, &qry)) {
2082                 info->vendor = le16_to_cpu(get_unaligned(&(qry.p_id)));
2083                 info->ext_addr = le16_to_cpu(get_unaligned(&(qry.p_adr)));
2084                 num_erase_regions = qry.num_erase_regions;
2085
2086                 if (info->ext_addr) {
2087                         info->cfi_version = (ushort)flash_read_uchar(info,
2088                                                 info->ext_addr + 3) << 8;
2089                         info->cfi_version |= (ushort)flash_read_uchar(info,
2090                                                 info->ext_addr + 4);
2091                 }
2092
2093 #ifdef DEBUG
2094                 flash_printqry(&qry);
2095 #endif
2096
2097                 switch (info->vendor) {
2098                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2099                 case CFI_CMDSET_INTEL_STANDARD:
2100                 case CFI_CMDSET_INTEL_EXTENDED:
2101                         cmdset_intel_init(info, &qry);
2102                         break;
2103                 case CFI_CMDSET_AMD_STANDARD:
2104                 case CFI_CMDSET_AMD_EXTENDED:
2105                         cmdset_amd_init(info, &qry);
2106                         break;
2107                 default:
2108                         printf("CFI: Unknown command set 0x%x\n",
2109                                         info->vendor);
2110                         /*
2111                          * Unfortunately, this means we don't know how
2112                          * to get the chip back to Read mode. Might
2113                          * as well try an Intel-style reset...
2114                          */
2115                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2116                         return 0;
2117                 }
2118
2119                 /* Do manufacturer-specific fixups */
2120                 switch (info->manufacturer_id) {
2121                 case 0x0001: /* AMD */
2122                 case 0x0037: /* AMIC */
2123                         flash_fixup_amd(info, &qry);
2124                         break;
2125                 case 0x001f:
2126                         flash_fixup_atmel(info, &qry);
2127                         break;
2128                 case 0x0020:
2129                         flash_fixup_stm(info, &qry);
2130                         break;
2131                 case 0x00bf: /* SST */
2132                         flash_fixup_sst(info, &qry);
2133                         break;
2134                 case 0x0089: /* Numonyx */
2135                         flash_fixup_num(info, &qry);
2136                         break;
2137                 }
2138
2139                 debug("manufacturer is %d\n", info->vendor);
2140                 debug("manufacturer id is 0x%x\n", info->manufacturer_id);
2141                 debug("device id is 0x%x\n", info->device_id);
2142                 debug("device id2 is 0x%x\n", info->device_id2);
2143                 debug("cfi version is 0x%04x\n", info->cfi_version);
2144
2145                 size_ratio = info->portwidth / info->chipwidth;
2146                 /* if the chip is x8/x16 reduce the ratio by half */
2147                 if ((info->interface == FLASH_CFI_X8X16)
2148                     && (info->chipwidth == FLASH_CFI_BY8)) {
2149                         size_ratio >>= 1;
2150                 }
2151                 debug("size_ratio %d port %d bits chip %d bits\n",
2152                        size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2153                        info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2154                 info->size = 1 << qry.dev_size;
2155                 /* multiply the size by the number of chips */
2156                 info->size *= size_ratio;
2157                 max_size = cfi_flash_bank_size(banknum);
2158                 if (max_size && (info->size > max_size)) {
2159                         debug("[truncated from %ldMiB]", info->size >> 20);
2160                         info->size = max_size;
2161                 }
2162                 debug("found %d erase regions\n", num_erase_regions);
2163                 sect_cnt = 0;
2164                 sector = base;
2165                 for (i = 0; i < num_erase_regions; i++) {
2166                         if (i > NUM_ERASE_REGIONS) {
2167                                 printf("%d erase regions found, only %d used\n",
2168                                         num_erase_regions, NUM_ERASE_REGIONS);
2169                                 break;
2170                         }
2171
2172                         tmp = le32_to_cpu(get_unaligned(
2173                                                 &(qry.erase_region_info[i])));
2174                         debug("erase region %u: 0x%08lx\n", i, tmp);
2175
2176                         erase_region_count = (tmp & 0xffff) + 1;
2177                         tmp >>= 16;
2178                         erase_region_size =
2179                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2180                         debug("erase_region_count = %d erase_region_size = %d\n",
2181                                 erase_region_count, erase_region_size);
2182                         for (j = 0; j < erase_region_count; j++) {
2183                                 if (sector - base >= info->size)
2184                                         break;
2185                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2186                                         printf("ERROR: too many flash sectors\n");
2187                                         break;
2188                                 }
2189                                 info->start[sect_cnt] =
2190                                         (ulong)map_physmem(sector,
2191                                                            info->portwidth,
2192                                                            MAP_NOCACHE);
2193                                 sector += (erase_region_size * size_ratio);
2194
2195                                 /*
2196                                  * Only read protection status from
2197                                  * supported devices (intel...)
2198                                  */
2199                                 switch (info->vendor) {
2200                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2201                                 case CFI_CMDSET_INTEL_EXTENDED:
2202                                 case CFI_CMDSET_INTEL_STANDARD:
2203                                         /*
2204                                          * Set flash to read-id mode. Otherwise
2205                                          * reading protected status is not
2206                                          * guaranteed.
2207                                          */
2208                                         flash_write_cmd(info, sect_cnt, 0,
2209                                                         FLASH_CMD_READ_ID);
2210                                         info->protect[sect_cnt] =
2211                                                 flash_isset(info, sect_cnt,
2212                                                              FLASH_OFFSET_PROTECT,
2213                                                              FLASH_STATUS_PROTECT);
2214                                         flash_write_cmd(info, sect_cnt, 0,
2215                                                         FLASH_CMD_RESET);
2216                                         break;
2217                                 case CFI_CMDSET_AMD_EXTENDED:
2218                                 case CFI_CMDSET_AMD_STANDARD:
2219                                         if (!info->legacy_unlock) {
2220                                                 /* default: not protected */
2221                                                 info->protect[sect_cnt] = 0;
2222                                                 break;
2223                                         }
2224
2225                                         /* Read protection (PPB) from sector */
2226                                         flash_write_cmd(info, 0, 0,
2227                                                         info->cmd_reset);
2228                                         flash_unlock_seq(info, 0);
2229                                         flash_write_cmd(info, 0,
2230                                                         info->addr_unlock1,
2231                                                         FLASH_CMD_READ_ID);
2232                                         info->protect[sect_cnt] =
2233                                                 flash_isset(
2234                                                         info, sect_cnt,
2235                                                         FLASH_OFFSET_PROTECT,
2236                                                         FLASH_STATUS_PROTECT);
2237                                         break;
2238                                 default:
2239                                         /* default: not protected */
2240                                         info->protect[sect_cnt] = 0;
2241                                 }
2242
2243                                 sect_cnt++;
2244                         }
2245                 }
2246
2247                 info->sector_count = sect_cnt;
2248                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2249                 tmp = 1 << qry.block_erase_timeout_typ;
2250                 info->erase_blk_tout = tmp *
2251                         (1 << qry.block_erase_timeout_max);
2252                 tmp = (1 << qry.buf_write_timeout_typ) *
2253                         (1 << qry.buf_write_timeout_max);
2254
2255                 /* round up when converting to ms */
2256                 info->buffer_write_tout = (tmp + 999) / 1000;
2257                 tmp = (1 << qry.word_write_timeout_typ) *
2258                         (1 << qry.word_write_timeout_max);
2259                 /* round up when converting to ms */
2260                 info->write_tout = (tmp + 999) / 1000;
2261                 info->flash_id = FLASH_MAN_CFI;
2262                 if ((info->interface == FLASH_CFI_X8X16) &&
2263                     (info->chipwidth == FLASH_CFI_BY8)) {
2264                         /* XXX - Need to test on x8/x16 in parallel. */
2265                         info->portwidth >>= 1;
2266                 }
2267
2268                 flash_write_cmd(info, 0, 0, info->cmd_reset);
2269         }
2270
2271         return (info->size);
2272 }
2273
2274 #ifdef CONFIG_FLASH_CFI_MTD
2275 void flash_set_verbose(uint v)
2276 {
2277         flash_verbose = v;
2278 }
2279 #endif
2280
2281 static void cfi_flash_set_config_reg(u32 base, u16 val)
2282 {
2283 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2284         /*
2285          * Only set this config register if really defined
2286          * to a valid value (0xffff is invalid)
2287          */
2288         if (val == 0xffff)
2289                 return;
2290
2291         /*
2292          * Set configuration register. Data is "encrypted" in the 16 lower
2293          * address bits.
2294          */
2295         flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2296         flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2297
2298         /*
2299          * Finally issue reset-command to bring device back to
2300          * read-array mode
2301          */
2302         flash_write16(FLASH_CMD_RESET, (void *)base);
2303 #endif
2304 }
2305
2306 /*-----------------------------------------------------------------------
2307  */
2308
2309 static void flash_protect_default(void)
2310 {
2311 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2312         int i;
2313         struct apl_s {
2314                 ulong start;
2315                 ulong size;
2316         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2317 #endif
2318
2319         /* Monitor protection ON by default */
2320 #if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2321         (!defined(CONFIG_MONITOR_IS_IN_RAM))
2322         flash_protect(FLAG_PROTECT_SET,
2323                        CONFIG_SYS_MONITOR_BASE,
2324                        CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
2325                        flash_get_info(CONFIG_SYS_MONITOR_BASE));
2326 #endif
2327
2328         /* Environment protection ON by default */
2329 #ifdef CONFIG_ENV_IS_IN_FLASH
2330         flash_protect(FLAG_PROTECT_SET,
2331                        CONFIG_ENV_ADDR,
2332                        CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2333                        flash_get_info(CONFIG_ENV_ADDR));
2334 #endif
2335
2336         /* Redundant environment protection ON by default */
2337 #ifdef CONFIG_ENV_ADDR_REDUND
2338         flash_protect(FLAG_PROTECT_SET,
2339                        CONFIG_ENV_ADDR_REDUND,
2340                        CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2341                        flash_get_info(CONFIG_ENV_ADDR_REDUND));
2342 #endif
2343
2344 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2345         for (i = 0; i < ARRAY_SIZE(apl); i++) {
2346                 debug("autoprotecting from %08lx to %08lx\n",
2347                       apl[i].start, apl[i].start + apl[i].size - 1);
2348                 flash_protect(FLAG_PROTECT_SET,
2349                                apl[i].start,
2350                                apl[i].start + apl[i].size - 1,
2351                                flash_get_info(apl[i].start));
2352         }
2353 #endif
2354 }
2355
2356 unsigned long flash_init(void)
2357 {
2358         unsigned long size = 0;
2359         int i;
2360
2361 #ifdef CONFIG_SYS_FLASH_PROTECTION
2362         /* read environment from EEPROM */
2363         char s[64];
2364
2365         env_get_f("unlock", s, sizeof(s));
2366 #endif
2367
2368 #ifdef CONFIG_CFI_FLASH /* for driver model */
2369         cfi_flash_init_dm();
2370 #endif
2371
2372         /* Init: no FLASHes known */
2373         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2374                 flash_info[i].flash_id = FLASH_UNKNOWN;
2375
2376                 /* Optionally write flash configuration register */
2377                 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2378                                          cfi_flash_config_reg(i));
2379
2380                 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2381                         flash_get_size(cfi_flash_bank_addr(i), i);
2382                 size += flash_info[i].size;
2383                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2384 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2385                         printf("## Unknown flash on Bank %d "
2386                                 "- Size = 0x%08lx = %ld MB\n",
2387                                 i + 1, flash_info[i].size,
2388                                 flash_info[i].size >> 20);
2389 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2390                 }
2391 #ifdef CONFIG_SYS_FLASH_PROTECTION
2392                 else if (strcmp(s, "yes") == 0) {
2393                         /*
2394                          * Only the U-Boot image and it's environment
2395                          * is protected, all other sectors are
2396                          * unprotected (unlocked) if flash hardware
2397                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2398                          * and the environment variable "unlock" is
2399                          * set to "yes".
2400                          */
2401                         if (flash_info[i].legacy_unlock) {
2402                                 int k;
2403
2404                                 /*
2405                                  * Disable legacy_unlock temporarily,
2406                                  * since flash_real_protect would
2407                                  * relock all other sectors again
2408                                  * otherwise.
2409                                  */
2410                                 flash_info[i].legacy_unlock = 0;
2411
2412                                 /*
2413                                  * Legacy unlocking (e.g. Intel J3) ->
2414                                  * unlock only one sector. This will
2415                                  * unlock all sectors.
2416                                  */
2417                                 flash_real_protect(&flash_info[i], 0, 0);
2418
2419                                 flash_info[i].legacy_unlock = 1;
2420
2421                                 /*
2422                                  * Manually mark other sectors as
2423                                  * unlocked (unprotected)
2424                                  */
2425                                 for (k = 1; k < flash_info[i].sector_count; k++)
2426                                         flash_info[i].protect[k] = 0;
2427                         } else {
2428                                 /*
2429                                  * No legancy unlocking -> unlock all sectors
2430                                  */
2431                                 flash_protect(FLAG_PROTECT_CLEAR,
2432                                                flash_info[i].start[0],
2433                                                flash_info[i].start[0]
2434                                                + flash_info[i].size - 1,
2435                                                &flash_info[i]);
2436                         }
2437                 }
2438 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2439         }
2440
2441         flash_protect_default();
2442 #ifdef CONFIG_FLASH_CFI_MTD
2443         cfi_mtd_init();
2444 #endif
2445
2446         return (size);
2447 }
2448
2449 #ifdef CONFIG_CFI_FLASH /* for driver model */
2450 static int cfi_flash_probe(struct udevice *dev)
2451 {
2452         void *blob = (void *)gd->fdt_blob;
2453         int node = dev_of_offset(dev);
2454         const fdt32_t *cell;
2455         phys_addr_t addr;
2456         int parent, addrc, sizec;
2457         int len, idx;
2458
2459         parent = fdt_parent_offset(blob, node);
2460         fdt_support_default_count_cells(blob, parent, &addrc, &sizec);
2461         /* decode regs, there may be multiple reg tuples. */
2462         cell = fdt_getprop(blob, node, "reg", &len);
2463         if (!cell)
2464                 return -ENOENT;
2465         idx = 0;
2466         len /= sizeof(fdt32_t);
2467         while (idx < len) {
2468                 addr = fdt_translate_address((void *)blob,
2469                                              node, cell + idx);
2470                 flash_info[cfi_flash_num_flash_banks].dev = dev;
2471                 flash_info[cfi_flash_num_flash_banks].base = addr;
2472                 cfi_flash_num_flash_banks++;
2473                 idx += addrc + sizec;
2474         }
2475         gd->bd->bi_flashstart = flash_info[0].base;
2476
2477         return 0;
2478 }
2479
2480 static const struct udevice_id cfi_flash_ids[] = {
2481         { .compatible = "cfi-flash" },
2482         { .compatible = "jedec-flash" },
2483         {}
2484 };
2485
2486 U_BOOT_DRIVER(cfi_flash) = {
2487         .name   = "cfi_flash",
2488         .id     = UCLASS_MTD,
2489         .of_match = cfi_flash_ids,
2490         .probe = cfi_flash_probe,
2491 };
2492 #endif /* CONFIG_CFI_FLASH */