drivers/mtd/cfi_flash.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2002-2004
   4  * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
   5  *
   6  * Copyright (C) 2003 Arabella Software Ltd.
   7  * Yuli Barcohen <yuli@arabellasw.com>
   8  *
   9  * Copyright (C) 2004
  10  * Ed Okerson
  11  *
  12  * Copyright (C) 2006
  13  * Tolunay Orkun <listmember@orkun.us>
  14  */
  15
  16 /* The DEBUG define must be before common to enable debugging */
  17 /* #define DEBUG        */
  18
  19 #include <common.h>
  20 #include <console.h>
  21 #include <dm.h>
  22 #include <env.h>
  23 #include <errno.h>
  24 #include <fdt_support.h>
  25 #include <irq_func.h>
  26 #include <asm/processor.h>
  27 #include <asm/io.h>
  28 #include <asm/byteorder.h>
  29 #include <asm/unaligned.h>
  30 #include <env_internal.h>
  31 #include <mtd/cfi_flash.h>
  32 #include <watchdog.h>
  33
  34 /*
  35  * This file implements a Common Flash Interface (CFI) driver for
  36  * U-Boot.
  37  *
  38  * The width of the port and the width of the chips are determined at
  39  * initialization.  These widths are used to calculate the address for
  40  * access CFI data structures.
  41  *
  42  * References
  43  * JEDEC Standard JESD68 - Common Flash Interface (CFI)
  44  * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
  45  * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
  46  * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
  47  * AMD CFI Specification, Release 2.0 December 1, 2001
  48  * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
  49  *   Device IDs, Publication Number 25538 Revision A, November 8, 2001
  50  *
  51  * Define CONFIG_SYS_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
  52  * reading and writing ... (yes there is such a Hardware).
  53  */
  54
  55 DECLARE_GLOBAL_DATA_PTR;
  56
  57 static uint flash_offset_cfi[2] = { FLASH_OFFSET_CFI, FLASH_OFFSET_CFI_ALT };
  58 #ifdef CONFIG_FLASH_CFI_MTD
  59 static uint flash_verbose = 1;
  60 #else
  61 #define flash_verbose 1
  62 #endif
  63
  64 flash_info_t flash_info[CFI_MAX_FLASH_BANKS];   /* FLASH chips info */
  65
  66 /*
  67  * Check if chip width is defined. If not, start detecting with 8bit.
  68  */
  69 #ifndef CONFIG_SYS_FLASH_CFI_WIDTH
  70 #define CONFIG_SYS_FLASH_CFI_WIDTH      FLASH_CFI_8BIT
  71 #endif
  72
  73 #ifdef CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS
  74 #define __maybe_weak __weak
  75 #else
  76 #define __maybe_weak static
  77 #endif
  78
  79 /*
  80  * 0xffff is an undefined value for the configuration register. When
  81  * this value is returned, the configuration register shall not be
  82  * written at all (default mode).
  83  */
  84 static u16 cfi_flash_config_reg(int i)
  85 {
  86 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
  87         return ((u16 [])CONFIG_SYS_CFI_FLASH_CONFIG_REGS)[i];
  88 #else
  89         return 0xffff;
  90 #endif
  91 }
  92
  93 #if defined(CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
  94 int cfi_flash_num_flash_banks = CONFIG_SYS_MAX_FLASH_BANKS_DETECT;
  95 #else
  96 int cfi_flash_num_flash_banks;
  97 #endif
  98
  99 #ifdef CONFIG_CFI_FLASH /* for driver model */
 100 static void cfi_flash_init_dm(void)
 101 {
 102         struct udevice *dev;
 103
 104         cfi_flash_num_flash_banks = 0;
 105         /*
 106          * The uclass_first_device() will probe the first device and
 107          * uclass_next_device() will probe the rest if they exist. So
 108          * that cfi_flash_probe() will get called assigning the base
 109          * addresses that are available.
 110          */
 111         for (uclass_first_device(UCLASS_MTD, &dev);
 112              dev;
 113              uclass_next_device(&dev)) {
 114         }
 115 }
 116
 117 phys_addr_t cfi_flash_bank_addr(int i)
 118 {
 119         return flash_info[i].base;
 120 }
 121 #else
 122 __weak phys_addr_t cfi_flash_bank_addr(int i)
 123 {
 124         return ((phys_addr_t [])CONFIG_SYS_FLASH_BANKS_LIST)[i];
 125 }
 126 #endif
 127
 128 __weak unsigned long cfi_flash_bank_size(int i)
 129 {
 130 #ifdef CONFIG_SYS_FLASH_BANKS_SIZES
 131         return ((unsigned long [])CONFIG_SYS_FLASH_BANKS_SIZES)[i];
 132 #else
 133         return 0;
 134 #endif
 135 }
 136
 137 __maybe_weak void flash_write8(u8 value, void *addr)
 138 {
 139         __raw_writeb(value, addr);
 140 }
 141
 142 __maybe_weak void flash_write16(u16 value, void *addr)
 143 {
 144         __raw_writew(value, addr);
 145 }
 146
 147 __maybe_weak void flash_write32(u32 value, void *addr)
 148 {
 149         __raw_writel(value, addr);
 150 }
 151
 152 __maybe_weak void flash_write64(u64 value, void *addr)
 153 {
 154         /* No architectures currently implement __raw_writeq() */
 155         *(volatile u64 *)addr = value;
 156 }
 157
 158 __maybe_weak u8 flash_read8(void *addr)
 159 {
 160         return __raw_readb(addr);
 161 }
 162
 163 __maybe_weak u16 flash_read16(void *addr)
 164 {
 165         return __raw_readw(addr);
 166 }
 167
 168 __maybe_weak u32 flash_read32(void *addr)
 169 {
 170         return __raw_readl(addr);
 171 }
 172
 173 __maybe_weak u64 flash_read64(void *addr)
 174 {
 175         /* No architectures currently implement __raw_readq() */
 176         return *(volatile u64 *)addr;
 177 }
 178
 179 /*-----------------------------------------------------------------------
 180  */
 181 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || \
 182         (defined(CONFIG_SYS_MONITOR_BASE) && \
 183         (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE))
 184 static flash_info_t *flash_get_info(ulong base)
 185 {
 186         int i;
 187         flash_info_t *info;
 188
 189         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
 190                 info = &flash_info[i];
 191                 if (info->size && info->start[0] <= base &&
 192                     base <= info->start[0] + info->size - 1)
 193                         return info;
 194         }
 195
 196         return NULL;
 197 }
 198 #endif
 199
 200 unsigned long flash_sector_size(flash_info_t *info, flash_sect_t sect)
 201 {
 202         if (sect != (info->sector_count - 1))
 203                 return info->start[sect + 1] - info->start[sect];
 204         else
 205                 return info->start[0] + info->size - info->start[sect];
 206 }
 207
 208 /*-----------------------------------------------------------------------
 209  * create an address based on the offset and the port width
 210  */
 211 static inline void *
 212 flash_map(flash_info_t *info, flash_sect_t sect, uint offset)
 213 {
 214         unsigned int byte_offset = offset * info->portwidth;
 215
 216         return (void *)(info->start[sect] + byte_offset);
 217 }
 218
 219 static inline void flash_unmap(flash_info_t *info, flash_sect_t sect,
 220                                unsigned int offset, void *addr)
 221 {
 222 }
 223
 224 /*-----------------------------------------------------------------------
 225  * make a proper sized command based on the port and chip widths
 226  */
 227 static void flash_make_cmd(flash_info_t *info, u32 cmd, void *cmdbuf)
 228 {
 229         int i;
 230         int cword_offset;
 231         int cp_offset;
 232 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 233         u32 cmd_le = cpu_to_le32(cmd);
 234 #endif
 235         uchar val;
 236         uchar *cp = (uchar *) cmdbuf;
 237
 238         for (i = info->portwidth; i > 0; i--) {
 239                 cword_offset = (info->portwidth - i) % info->chipwidth;
 240 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 241                 cp_offset = info->portwidth - i;
 242                 val = *((uchar *)&cmd_le + cword_offset);
 243 #else
 244                 cp_offset = i - 1;
 245                 val = *((uchar *)&cmd + sizeof(u32) - cword_offset - 1);
 246 #endif
 247                 cp[cp_offset] = (cword_offset >= sizeof(u32)) ? 0x00 : val;
 248         }
 249 }
 250
 251 #ifdef DEBUG
 252 /*-----------------------------------------------------------------------
 253  * Debug support
 254  */
 255 static void print_longlong(char *str, unsigned long long data)
 256 {
 257         int i;
 258         char *cp;
 259
 260         cp = (char *)&data;
 261         for (i = 0; i < 8; i++)
 262                 sprintf(&str[i * 2], "%2.2x", *cp++);
 263 }
 264
 265 static void flash_printqry(struct cfi_qry *qry)
 266 {
 267         u8 *p = (u8 *)qry;
 268         int x, y;
 269
 270         for (x = 0; x < sizeof(struct cfi_qry); x += 16) {
 271                 debug("%02x : ", x);
 272                 for (y = 0; y < 16; y++)
 273                         debug("%2.2x ", p[x + y]);
 274                 debug(" ");
 275                 for (y = 0; y < 16; y++) {
 276                         unsigned char c = p[x + y];
 277
 278                         if (c >= 0x20 && c <= 0x7e)
 279                                 debug("%c", c);
 280                         else
 281                                 debug(".");
 282                 }
 283                 debug("\n");
 284         }
 285 }
 286 #endif
 287
 288 /*-----------------------------------------------------------------------
 289  * read a character at a port width address
 290  */
 291 static inline uchar flash_read_uchar(flash_info_t *info, uint offset)
 292 {
 293         uchar *cp;
 294         uchar retval;
 295
 296         cp = flash_map(info, 0, offset);
 297 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 298         retval = flash_read8(cp);
 299 #else
 300         retval = flash_read8(cp + info->portwidth - 1);
 301 #endif
 302         flash_unmap(info, 0, offset, cp);
 303         return retval;
 304 }
 305
 306 /*-----------------------------------------------------------------------
 307  * read a word at a port width address, assume 16bit bus
 308  */
 309 static inline ushort flash_read_word(flash_info_t *info, uint offset)
 310 {
 311         ushort *addr, retval;
 312
 313         addr = flash_map(info, 0, offset);
 314         retval = flash_read16(addr);
 315         flash_unmap(info, 0, offset, addr);
 316         return retval;
 317 }
 318
 319 /*-----------------------------------------------------------------------
 320  * read a long word by picking the least significant byte of each maximum
 321  * port size word. Swap for ppc format.
 322  */
 323 static ulong flash_read_long (flash_info_t *info, flash_sect_t sect,
 324                               uint offset)
 325 {
 326         uchar *addr;
 327         ulong retval;
 328
 329 #ifdef DEBUG
 330         int x;
 331 #endif
 332         addr = flash_map(info, sect, offset);
 333
 334 #ifdef DEBUG
 335         debug("long addr is at %p info->portwidth = %d\n", addr,
 336               info->portwidth);
 337         for (x = 0; x < 4 * info->portwidth; x++)
 338                 debug("addr[%x] = 0x%x\n", x, flash_read8(addr + x));
 339 #endif
 340 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 341         retval = ((flash_read8(addr) << 16) |
 342                   (flash_read8(addr + info->portwidth) << 24) |
 343                   (flash_read8(addr + 2 * info->portwidth)) |
 344                   (flash_read8(addr + 3 * info->portwidth) << 8));
 345 #else
 346         retval = ((flash_read8(addr + 2 * info->portwidth - 1) << 24) |
 347                   (flash_read8(addr + info->portwidth - 1) << 16) |
 348                   (flash_read8(addr + 4 * info->portwidth - 1) << 8) |
 349                   (flash_read8(addr + 3 * info->portwidth - 1)));
 350 #endif
 351         flash_unmap(info, sect, offset, addr);
 352
 353         return retval;
 354 }
 355
 356 /*
 357  * Write a proper sized command to the correct address
 358  */
 359 static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
 360                             uint offset, u32 cmd)
 361 {
 362         void *addr;
 363         cfiword_t cword;
 364
 365         addr = flash_map(info, sect, offset);
 366         flash_make_cmd(info, cmd, &cword);
 367         switch (info->portwidth) {
 368         case FLASH_CFI_8BIT:
 369                 debug("fwc addr %p cmd %x %x 8bit x %d bit\n", addr, cmd,
 370                       cword.w8, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 371                 flash_write8(cword.w8, addr);
 372                 break;
 373         case FLASH_CFI_16BIT:
 374                 debug("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr,
 375                       cmd, cword.w16,
 376                       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 377                 flash_write16(cword.w16, addr);
 378                 break;
 379         case FLASH_CFI_32BIT:
 380                 debug("fwc addr %p cmd %x %8.8x 32bit x %d bit\n", addr,
 381                       cmd, cword.w32,
 382                       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 383                 flash_write32(cword.w32, addr);
 384                 break;
 385         case FLASH_CFI_64BIT:
 386 #ifdef DEBUG
 387                 {
 388                         char str[20];
 389
 390                         print_longlong(str, cword.w64);
 391
 392                         debug("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
 393                               addr, cmd, str,
 394                               info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
 395                 }
 396 #endif
 397                 flash_write64(cword.w64, addr);
 398                 break;
 399         }
 400
 401         /* Ensure all the instructions are fully finished */
 402         sync();
 403
 404         flash_unmap(info, sect, offset, addr);
 405 }
 406
 407 static void flash_unlock_seq(flash_info_t *info, flash_sect_t sect)
 408 {
 409         flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_UNLOCK_START);
 410         flash_write_cmd(info, sect, info->addr_unlock2, AMD_CMD_UNLOCK_ACK);
 411 }
 412
 413 /*-----------------------------------------------------------------------
 414  */
 415 static int flash_isequal(flash_info_t *info, flash_sect_t sect, uint offset,
 416                          uchar cmd)
 417 {
 418         void *addr;
 419         cfiword_t cword;
 420         int retval;
 421
 422         addr = flash_map(info, sect, offset);
 423         flash_make_cmd(info, cmd, &cword);
 424
 425         debug("is= cmd %x(%c) addr %p ", cmd, cmd, addr);
 426         switch (info->portwidth) {
 427         case FLASH_CFI_8BIT:
 428                 debug("is= %x %x\n", flash_read8(addr), cword.w8);
 429                 retval = (flash_read8(addr) == cword.w8);
 430                 break;
 431         case FLASH_CFI_16BIT:
 432                 debug("is= %4.4x %4.4x\n", flash_read16(addr), cword.w16);
 433                 retval = (flash_read16(addr) == cword.w16);
 434                 break;
 435         case FLASH_CFI_32BIT:
 436                 debug("is= %8.8x %8.8x\n", flash_read32(addr), cword.w32);
 437                 retval = (flash_read32(addr) == cword.w32);
 438                 break;
 439         case FLASH_CFI_64BIT:
 440 #ifdef DEBUG
 441                 {
 442                         char str1[20];
 443                         char str2[20];
 444
 445                         print_longlong(str1, flash_read64(addr));
 446                         print_longlong(str2, cword.w64);
 447                         debug("is= %s %s\n", str1, str2);
 448                 }
 449 #endif
 450                 retval = (flash_read64(addr) == cword.w64);
 451                 break;
 452         default:
 453                 retval = 0;
 454                 break;
 455         }
 456         flash_unmap(info, sect, offset, addr);
 457
 458         return retval;
 459 }
 460
 461 /*-----------------------------------------------------------------------
 462  */
 463 static int flash_isset(flash_info_t *info, flash_sect_t sect, uint offset,
 464                        uchar cmd)
 465 {
 466         void *addr;
 467         cfiword_t cword;
 468         int retval;
 469
 470         addr = flash_map(info, sect, offset);
 471         flash_make_cmd(info, cmd, &cword);
 472         switch (info->portwidth) {
 473         case FLASH_CFI_8BIT:
 474                 retval = ((flash_read8(addr) & cword.w8) == cword.w8);
 475                 break;
 476         case FLASH_CFI_16BIT:
 477                 retval = ((flash_read16(addr) & cword.w16) == cword.w16);
 478                 break;
 479         case FLASH_CFI_32BIT:
 480                 retval = ((flash_read32(addr) & cword.w32) == cword.w32);
 481                 break;
 482         case FLASH_CFI_64BIT:
 483                 retval = ((flash_read64(addr) & cword.w64) == cword.w64);
 484                 break;
 485         default:
 486                 retval = 0;
 487                 break;
 488         }
 489         flash_unmap(info, sect, offset, addr);
 490
 491         return retval;
 492 }
 493
 494 /*-----------------------------------------------------------------------
 495  */
 496 static int flash_toggle(flash_info_t *info, flash_sect_t sect, uint offset,
 497                         uchar cmd)
 498 {
 499         u8 *addr;
 500         cfiword_t cword;
 501         int retval;
 502
 503         addr = flash_map(info, sect, offset);
 504         flash_make_cmd(info, cmd, &cword);
 505         switch (info->portwidth) {
 506         case FLASH_CFI_8BIT:
 507                 retval = flash_read8(addr) != flash_read8(addr);
 508                 break;
 509         case FLASH_CFI_16BIT:
 510                 retval = flash_read16(addr) != flash_read16(addr);
 511                 break;
 512         case FLASH_CFI_32BIT:
 513                 retval = flash_read32(addr) != flash_read32(addr);
 514                 break;
 515         case FLASH_CFI_64BIT:
 516                 retval = ((flash_read32(addr) != flash_read32(addr)) ||
 517                            (flash_read32(addr + 4) != flash_read32(addr + 4)));
 518                 break;
 519         default:
 520                 retval = 0;
 521                 break;
 522         }
 523         flash_unmap(info, sect, offset, addr);
 524
 525         return retval;
 526 }
 527
 528 /*
 529  * flash_is_busy - check to see if the flash is busy
 530  *
 531  * This routine checks the status of the chip and returns true if the
 532  * chip is busy.
 533  */
 534 static int flash_is_busy(flash_info_t *info, flash_sect_t sect)
 535 {
 536         int retval;
 537
 538         switch (info->vendor) {
 539         case CFI_CMDSET_INTEL_PROG_REGIONS:
 540         case CFI_CMDSET_INTEL_STANDARD:
 541         case CFI_CMDSET_INTEL_EXTENDED:
 542                 retval = !flash_isset(info, sect, 0, FLASH_STATUS_DONE);
 543                 break;
 544         case CFI_CMDSET_AMD_STANDARD:
 545         case CFI_CMDSET_AMD_EXTENDED:
 546 #ifdef CONFIG_FLASH_CFI_LEGACY
 547         case CFI_CMDSET_AMD_LEGACY:
 548 #endif
 549                 if (info->sr_supported) {
 550                         flash_write_cmd(info, sect, info->addr_unlock1,
 551                                         FLASH_CMD_READ_STATUS);
 552                         retval = !flash_isset(info, sect, 0,
 553                                               FLASH_STATUS_DONE);
 554                 } else {
 555                         retval = flash_toggle(info, sect, 0,
 556                                               AMD_STATUS_TOGGLE);
 557                 }
 558
 559                 break;
 560         default:
 561                 retval = 0;
 562         }
 563         debug("%s: %d\n", __func__, retval);
 564         return retval;
 565 }
 566
 567 /*-----------------------------------------------------------------------
 568  *  wait for XSR.7 to be set. Time out with an error if it does not.
 569  *  This routine does not set the flash to read-array mode.
 570  */
 571 static int flash_status_check(flash_info_t *info, flash_sect_t sector,
 572                               ulong tout, char *prompt)
 573 {
 574         ulong start;
 575
 576 #if CONFIG_SYS_HZ != 1000
 577         /* Avoid overflow for large HZ */
 578         if ((ulong)CONFIG_SYS_HZ > 100000)
 579                 tout *= (ulong)CONFIG_SYS_HZ / 1000;
 580         else
 581                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 582 #endif
 583
 584         /* Wait for command completion */
 585 #ifdef CONFIG_SYS_LOW_RES_TIMER
 586         reset_timer();
 587 #endif
 588         start = get_timer(0);
 589         WATCHDOG_RESET();
 590         while (flash_is_busy(info, sector)) {
 591                 if (get_timer(start) > tout) {
 592                         printf("Flash %s timeout at address %lx data %lx\n",
 593                                prompt, info->start[sector],
 594                                flash_read_long(info, sector, 0));
 595                         flash_write_cmd(info, sector, 0, info->cmd_reset);
 596                         udelay(1);
 597                         return ERR_TIMEOUT;
 598                 }
 599                 udelay(1);              /* also triggers watchdog */
 600         }
 601         return ERR_OK;
 602 }
 603
 604 /*-----------------------------------------------------------------------
 605  * Wait for XSR.7 to be set, if it times out print an error, otherwise
 606  * do a full status check.
 607  *
 608  * This routine sets the flash to read-array mode.
 609  */
 610 static int flash_full_status_check(flash_info_t *info, flash_sect_t sector,
 611                                    ulong tout, char *prompt)
 612 {
 613         int retcode;
 614
 615         retcode = flash_status_check(info, sector, tout, prompt);
 616         switch (info->vendor) {
 617         case CFI_CMDSET_INTEL_PROG_REGIONS:
 618         case CFI_CMDSET_INTEL_EXTENDED:
 619         case CFI_CMDSET_INTEL_STANDARD:
 620                 if (retcode == ERR_OK &&
 621                     !flash_isset(info, sector, 0, FLASH_STATUS_DONE)) {
 622                         retcode = ERR_INVAL;
 623                         printf("Flash %s error at address %lx\n", prompt,
 624                                info->start[sector]);
 625                         if (flash_isset(info, sector, 0, FLASH_STATUS_ECLBS |
 626                                          FLASH_STATUS_PSLBS)) {
 627                                 puts("Command Sequence Error.\n");
 628                         } else if (flash_isset(info, sector, 0,
 629                                                 FLASH_STATUS_ECLBS)) {
 630                                 puts("Block Erase Error.\n");
 631                                 retcode = ERR_NOT_ERASED;
 632                         } else if (flash_isset(info, sector, 0,
 633                                                 FLASH_STATUS_PSLBS)) {
 634                                 puts("Locking Error\n");
 635                         }
 636                         if (flash_isset(info, sector, 0, FLASH_STATUS_DPS)) {
 637                                 puts("Block locked.\n");
 638                                 retcode = ERR_PROTECTED;
 639                         }
 640                         if (flash_isset(info, sector, 0, FLASH_STATUS_VPENS))
 641                                 puts("Vpp Low Error.\n");
 642                 }
 643                 flash_write_cmd(info, sector, 0, info->cmd_reset);
 644                 udelay(1);
 645                 break;
 646         default:
 647                 break;
 648         }
 649         return retcode;
 650 }
 651
 652 static int use_flash_status_poll(flash_info_t *info)
 653 {
 654 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 655         if (info->vendor == CFI_CMDSET_AMD_EXTENDED ||
 656             info->vendor == CFI_CMDSET_AMD_STANDARD)
 657                 return 1;
 658 #endif
 659         return 0;
 660 }
 661
 662 static int flash_status_poll(flash_info_t *info, void *src, void *dst,
 663                              ulong tout, char *prompt)
 664 {
 665 #ifdef CONFIG_SYS_CFI_FLASH_STATUS_POLL
 666         ulong start;
 667         int ready;
 668
 669 #if CONFIG_SYS_HZ != 1000
 670         /* Avoid overflow for large HZ */
 671         if ((ulong)CONFIG_SYS_HZ > 100000)
 672                 tout *= (ulong)CONFIG_SYS_HZ / 1000;
 673         else
 674                 tout = DIV_ROUND_UP(tout * (ulong)CONFIG_SYS_HZ, 1000);
 675 #endif
 676
 677         /* Wait for command completion */
 678 #ifdef CONFIG_SYS_LOW_RES_TIMER
 679         reset_timer();
 680 #endif
 681         start = get_timer(0);
 682         WATCHDOG_RESET();
 683         while (1) {
 684                 switch (info->portwidth) {
 685                 case FLASH_CFI_8BIT:
 686                         ready = flash_read8(dst) == flash_read8(src);
 687                         break;
 688                 case FLASH_CFI_16BIT:
 689                         ready = flash_read16(dst) == flash_read16(src);
 690                         break;
 691                 case FLASH_CFI_32BIT:
 692                         ready = flash_read32(dst) == flash_read32(src);
 693                         break;
 694                 case FLASH_CFI_64BIT:
 695                         ready = flash_read64(dst) == flash_read64(src);
 696                         break;
 697                 default:
 698                         ready = 0;
 699                         break;
 700                 }
 701                 if (ready)
 702                         break;
 703                 if (get_timer(start) > tout) {
 704                         printf("Flash %s timeout at address %lx data %lx\n",
 705                                prompt, (ulong)dst, (ulong)flash_read8(dst));
 706                         return ERR_TIMEOUT;
 707                 }
 708                 udelay(1);              /* also triggers watchdog */
 709         }
 710 #endif /* CONFIG_SYS_CFI_FLASH_STATUS_POLL */
 711         return ERR_OK;
 712 }
 713
 714 /*-----------------------------------------------------------------------
 715  */
 716 static void flash_add_byte(flash_info_t *info, cfiword_t *cword, uchar c)
 717 {
 718 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 719         unsigned short  w;
 720         unsigned int    l;
 721         unsigned long long ll;
 722 #endif
 723
 724         switch (info->portwidth) {
 725         case FLASH_CFI_8BIT:
 726                 cword->w8 = c;
 727                 break;
 728         case FLASH_CFI_16BIT:
 729 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 730                 w = c;
 731                 w <<= 8;
 732                 cword->w16 = (cword->w16 >> 8) | w;
 733 #else
 734                 cword->w16 = (cword->w16 << 8) | c;
 735 #endif
 736                 break;
 737         case FLASH_CFI_32BIT:
 738 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 739                 l = c;
 740                 l <<= 24;
 741                 cword->w32 = (cword->w32 >> 8) | l;
 742 #else
 743                 cword->w32 = (cword->w32 << 8) | c;
 744 #endif
 745                 break;
 746         case FLASH_CFI_64BIT:
 747 #if defined(__LITTLE_ENDIAN) && !defined(CONFIG_SYS_WRITE_SWAPPED_DATA)
 748                 ll = c;
 749                 ll <<= 56;
 750                 cword->w64 = (cword->w64 >> 8) | ll;
 751 #else
 752                 cword->w64 = (cword->w64 << 8) | c;
 753 #endif
 754                 break;
 755         }
 756 }
 757
 758 /*
 759  * Loop through the sector table starting from the previously found sector.
 760  * Searches forwards or backwards, dependent on the passed address.
 761  */
 762 static flash_sect_t find_sector(flash_info_t *info, ulong addr)
 763 {
 764         static flash_sect_t saved_sector; /* previously found sector */
 765         static flash_info_t *saved_info; /* previously used flash bank */
 766         flash_sect_t sector = saved_sector;
 767
 768         if (info != saved_info || sector >= info->sector_count)
 769                 sector = 0;
 770
 771         while ((sector < info->sector_count - 1) &&
 772                (info->start[sector] < addr))
 773                 sector++;
 774         while ((info->start[sector] > addr) && (sector > 0))
 775                 /*
 776                  * also decrements the sector in case of an overshot
 777                  * in the first loop
 778                  */
 779                 sector--;
 780
 781         saved_sector = sector;
 782         saved_info = info;
 783         return sector;
 784 }
 785
 786 /*-----------------------------------------------------------------------
 787  */
 788 static int flash_write_cfiword(flash_info_t *info, ulong dest, cfiword_t cword)
 789 {
 790         void *dstaddr = (void *)dest;
 791         int flag;
 792         flash_sect_t sect = 0;
 793         char sect_found = 0;
 794
 795         /* Check if Flash is (sufficiently) erased */
 796         switch (info->portwidth) {
 797         case FLASH_CFI_8BIT:
 798                 flag = ((flash_read8(dstaddr) & cword.w8) == cword.w8);
 799                 break;
 800         case FLASH_CFI_16BIT:
 801                 flag = ((flash_read16(dstaddr) & cword.w16) == cword.w16);
 802                 break;
 803         case FLASH_CFI_32BIT:
 804                 flag = ((flash_read32(dstaddr) & cword.w32) == cword.w32);
 805                 break;
 806         case FLASH_CFI_64BIT:
 807                 flag = ((flash_read64(dstaddr) & cword.w64) == cword.w64);
 808                 break;
 809         default:
 810                 flag = 0;
 811                 break;
 812         }
 813         if (!flag)
 814                 return ERR_NOT_ERASED;
 815
 816         /* Disable interrupts which might cause a timeout here */
 817         flag = disable_interrupts();
 818
 819         switch (info->vendor) {
 820         case CFI_CMDSET_INTEL_PROG_REGIONS:
 821         case CFI_CMDSET_INTEL_EXTENDED:
 822         case CFI_CMDSET_INTEL_STANDARD:
 823                 flash_write_cmd(info, 0, 0, FLASH_CMD_CLEAR_STATUS);
 824                 flash_write_cmd(info, 0, 0, FLASH_CMD_WRITE);
 825                 break;
 826         case CFI_CMDSET_AMD_EXTENDED:
 827         case CFI_CMDSET_AMD_STANDARD:
 828                 sect = find_sector(info, dest);
 829                 flash_unlock_seq(info, sect);
 830                 flash_write_cmd(info, sect, info->addr_unlock1, AMD_CMD_WRITE);
 831                 sect_found = 1;
 832                 break;
 833 #ifdef CONFIG_FLASH_CFI_LEGACY
 834         case CFI_CMDSET_AMD_LEGACY:
 835                 sect = find_sector(info, dest);
 836                 flash_unlock_seq(info, 0);
 837                 flash_write_cmd(info, 0, info->addr_unlock1, AMD_CMD_WRITE);
 838                 sect_found = 1;
 839                 break;
 840 #endif
 841         }
 842
 843         switch (info->portwidth) {
 844         case FLASH_CFI_8BIT:
 845                 flash_write8(cword.w8, dstaddr);
 846                 break;
 847         case FLASH_CFI_16BIT:
 848                 flash_write16(cword.w16, dstaddr);
 849                 break;
 850         case FLASH_CFI_32BIT:
 851                 flash_write32(cword.w32, dstaddr);
 852                 break;
 853         case FLASH_CFI_64BIT:
 854                 flash_write64(cword.w64, dstaddr);
 855                 break;
 856         }
 857
 858         /* re-enable interrupts if necessary */
 859         if (flag)
 860                 enable_interrupts();
 861
 862         if (!sect_found)
 863                 sect = find_sector(info, dest);
 864
 865         if (use_flash_status_poll(info))
 866                 return flash_status_poll(info, &cword, dstaddr,
 867                                          info->write_tout, "write");
 868         else
 869                 return flash_full_status_check(info, sect,
 870                                                info->write_tout, "write");
 871 }
 872
 873 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 874
 875 static int flash_write_cfibuffer(flash_info_t *info, ulong dest, uchar *cp,
 876                                  int len)
 877 {
 878         flash_sect_t sector;
 879         int cnt;
 880         int retcode;
 881         u8 *src = cp;
 882         u8 *dst = (u8 *)dest;
 883         u8 *dst2 = dst;
 884         int flag = 1;
 885         uint offset = 0;
 886         unsigned int shift;
 887         uchar write_cmd;
 888
 889         switch (info->portwidth) {
 890         case FLASH_CFI_8BIT:
 891                 shift = 0;
 892                 break;
 893         case FLASH_CFI_16BIT:
 894                 shift = 1;
 895                 break;
 896         case FLASH_CFI_32BIT:
 897                 shift = 2;
 898                 break;
 899         case FLASH_CFI_64BIT:
 900                 shift = 3;
 901                 break;
 902         default:
 903                 retcode = ERR_INVAL;
 904                 goto out_unmap;
 905         }
 906
 907         cnt = len >> shift;
 908
 909         while ((cnt-- > 0) && (flag == 1)) {
 910                 switch (info->portwidth) {
 911                 case FLASH_CFI_8BIT:
 912                         flag = ((flash_read8(dst2) & flash_read8(src)) ==
 913                                 flash_read8(src));
 914                         src += 1, dst2 += 1;
 915                         break;
 916                 case FLASH_CFI_16BIT:
 917                         flag = ((flash_read16(dst2) & flash_read16(src)) ==
 918                                 flash_read16(src));
 919                         src += 2, dst2 += 2;
 920                         break;
 921                 case FLASH_CFI_32BIT:
 922                         flag = ((flash_read32(dst2) & flash_read32(src)) ==
 923                                 flash_read32(src));
 924                         src += 4, dst2 += 4;
 925                         break;
 926                 case FLASH_CFI_64BIT:
 927                         flag = ((flash_read64(dst2) & flash_read64(src)) ==
 928                                 flash_read64(src));
 929                         src += 8, dst2 += 8;
 930                         break;
 931                 }
 932         }
 933         if (!flag) {
 934                 retcode = ERR_NOT_ERASED;
 935                 goto out_unmap;
 936         }
 937
 938         src = cp;
 939         sector = find_sector(info, dest);
 940
 941         switch (info->vendor) {
 942         case CFI_CMDSET_INTEL_PROG_REGIONS:
 943         case CFI_CMDSET_INTEL_STANDARD:
 944         case CFI_CMDSET_INTEL_EXTENDED:
 945                 write_cmd = (info->vendor == CFI_CMDSET_INTEL_PROG_REGIONS) ?
 946                             FLASH_CMD_WRITE_BUFFER_PROG :
 947                             FLASH_CMD_WRITE_TO_BUFFER;
 948                 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
 949                 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
 950                 flash_write_cmd(info, sector, 0, write_cmd);
 951                 retcode = flash_status_check(info, sector,
 952                                              info->buffer_write_tout,
 953                                              "write to buffer");
 954                 if (retcode == ERR_OK) {
 955                         /* reduce the number of loops by the width of
 956                          * the port
 957                          */
 958                         cnt = len >> shift;
 959                         flash_write_cmd(info, sector, 0, cnt - 1);
 960                         while (cnt-- > 0) {
 961                                 switch (info->portwidth) {
 962                                 case FLASH_CFI_8BIT:
 963                                         flash_write8(flash_read8(src), dst);
 964                                         src += 1, dst += 1;
 965                                         break;
 966                                 case FLASH_CFI_16BIT:
 967                                         flash_write16(flash_read16(src), dst);
 968                                         src += 2, dst += 2;
 969                                         break;
 970                                 case FLASH_CFI_32BIT:
 971                                         flash_write32(flash_read32(src), dst);
 972                                         src += 4, dst += 4;
 973                                         break;
 974                                 case FLASH_CFI_64BIT:
 975                                         flash_write64(flash_read64(src), dst);
 976                                         src += 8, dst += 8;
 977                                         break;
 978                                 default:
 979                                         retcode = ERR_INVAL;
 980                                         goto out_unmap;
 981                                 }
 982                         }
 983                         flash_write_cmd(info, sector, 0,
 984                                         FLASH_CMD_WRITE_BUFFER_CONFIRM);
 985                         retcode = flash_full_status_check(
 986                                 info, sector, info->buffer_write_tout,
 987                                 "buffer write");
 988                 }
 989
 990                 break;
 991
 992         case CFI_CMDSET_AMD_STANDARD:
 993         case CFI_CMDSET_AMD_EXTENDED:
 994                 flash_unlock_seq(info, sector);
 995
 996 #ifdef CONFIG_FLASH_SPANSION_S29WS_N
 997                 offset = ((unsigned long)dst - info->start[sector]) >> shift;
 998 #endif
 999                 flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER);
1000                 cnt = len >> shift;
1001                 flash_write_cmd(info, sector, offset, cnt - 1);
1002
1003                 switch (info->portwidth) {
1004                 case FLASH_CFI_8BIT:
1005                         while (cnt-- > 0) {
1006                                 flash_write8(flash_read8(src), dst);
1007                                 src += 1, dst += 1;
1008                         }
1009                         break;
1010                 case FLASH_CFI_16BIT:
1011                         while (cnt-- > 0) {
1012                                 flash_write16(flash_read16(src), dst);
1013                                 src += 2, dst += 2;
1014                         }
1015                         break;
1016                 case FLASH_CFI_32BIT:
1017                         while (cnt-- > 0) {
1018                                 flash_write32(flash_read32(src), dst);
1019                                 src += 4, dst += 4;
1020                         }
1021                         break;
1022                 case FLASH_CFI_64BIT:
1023                         while (cnt-- > 0) {
1024                                 flash_write64(flash_read64(src), dst);
1025                                 src += 8, dst += 8;
1026                         }
1027                         break;
1028                 default:
1029                         retcode = ERR_INVAL;
1030                         goto out_unmap;
1031                 }
1032
1033                 flash_write_cmd(info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
1034                 if (use_flash_status_poll(info))
1035                         retcode = flash_status_poll(info, src - (1 << shift),
1036                                                     dst - (1 << shift),
1037                                                     info->buffer_write_tout,
1038                                                     "buffer write");
1039                 else
1040                         retcode = flash_full_status_check(info, sector,
1041                                                           info->buffer_write_tout,
1042                                                           "buffer write");
1043                 break;
1044
1045         default:
1046                 debug("Unknown Command Set\n");
1047                 retcode = ERR_INVAL;
1048                 break;
1049         }
1050
1051 out_unmap:
1052         return retcode;
1053 }
1054 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1055
1056 /*-----------------------------------------------------------------------
1057  */
1058 int flash_erase(flash_info_t *info, int s_first, int s_last)
1059 {
1060         int rcode = 0;
1061         int prot;
1062         flash_sect_t sect;
1063         int st;
1064
1065         if (info->flash_id != FLASH_MAN_CFI) {
1066                 puts("Can't erase unknown flash type - aborted\n");
1067                 return 1;
1068         }
1069         if (s_first < 0 || s_first > s_last) {
1070                 puts("- no sectors to erase\n");
1071                 return 1;
1072         }
1073
1074         prot = 0;
1075         for (sect = s_first; sect <= s_last; ++sect)
1076                 if (info->protect[sect])
1077                         prot++;
1078         if (prot) {
1079                 printf("- Warning: %d protected sectors will not be erased!\n",
1080                        prot);
1081         } else if (flash_verbose) {
1082                 putc('\n');
1083         }
1084
1085         for (sect = s_first; sect <= s_last; sect++) {
1086                 if (ctrlc()) {
1087                         printf("\n");
1088                         return 1;
1089                 }
1090
1091                 if (info->protect[sect] == 0) { /* not protected */
1092 #ifdef CONFIG_SYS_FLASH_CHECK_BLANK_BEFORE_ERASE
1093                         int k;
1094                         int size;
1095                         int erased;
1096                         u32 *flash;
1097
1098                         /*
1099                          * Check if whole sector is erased
1100                          */
1101                         size = flash_sector_size(info, sect);
1102                         erased = 1;
1103                         flash = (u32 *)info->start[sect];
1104                         /* divide by 4 for longword access */
1105                         size = size >> 2;
1106                         for (k = 0; k < size; k++) {
1107                                 if (flash_read32(flash++) != 0xffffffff) {
1108                                         erased = 0;
1109                                         break;
1110                                 }
1111                         }
1112                         if (erased) {
1113                                 if (flash_verbose)
1114                                         putc(',');
1115                                 continue;
1116                         }
1117 #endif
1118                         switch (info->vendor) {
1119                         case CFI_CMDSET_INTEL_PROG_REGIONS:
1120                         case CFI_CMDSET_INTEL_STANDARD:
1121                         case CFI_CMDSET_INTEL_EXTENDED:
1122                                 flash_write_cmd(info, sect, 0,
1123                                                 FLASH_CMD_CLEAR_STATUS);
1124                                 flash_write_cmd(info, sect, 0,
1125                                                 FLASH_CMD_BLOCK_ERASE);
1126                                 flash_write_cmd(info, sect, 0,
1127                                                 FLASH_CMD_ERASE_CONFIRM);
1128                                 break;
1129                         case CFI_CMDSET_AMD_STANDARD:
1130                         case CFI_CMDSET_AMD_EXTENDED:
1131                                 flash_unlock_seq(info, sect);
1132                                 flash_write_cmd(info, sect,
1133                                                 info->addr_unlock1,
1134                                                 AMD_CMD_ERASE_START);
1135                                 flash_unlock_seq(info, sect);
1136                                 flash_write_cmd(info, sect, 0,
1137                                                 info->cmd_erase_sector);
1138                                 break;
1139 #ifdef CONFIG_FLASH_CFI_LEGACY
1140                         case CFI_CMDSET_AMD_LEGACY:
1141                                 flash_unlock_seq(info, 0);
1142                                 flash_write_cmd(info, 0, info->addr_unlock1,
1143                                                 AMD_CMD_ERASE_START);
1144                                 flash_unlock_seq(info, 0);
1145                                 flash_write_cmd(info, sect, 0,
1146                                                 AMD_CMD_ERASE_SECTOR);
1147                                 break;
1148 #endif
1149                         default:
1150                                 debug("Unknown flash vendor %d\n",
1151                                       info->vendor);
1152                                 break;
1153                         }
1154
1155                         if (use_flash_status_poll(info)) {
1156                                 cfiword_t cword;
1157                                 void *dest;
1158
1159                                 cword.w64 = 0xffffffffffffffffULL;
1160                                 dest = flash_map(info, sect, 0);
1161                                 st = flash_status_poll(info, &cword, dest,
1162                                                        info->erase_blk_tout,
1163                                                        "erase");
1164                                 flash_unmap(info, sect, 0, dest);
1165                         } else {
1166                                 st = flash_full_status_check(info, sect,
1167                                                              info->erase_blk_tout,
1168                                                              "erase");
1169                         }
1170
1171                         if (st)
1172                                 rcode = 1;
1173                         else if (flash_verbose)
1174                                 putc('.');
1175                 }
1176         }
1177
1178         if (flash_verbose)
1179                 puts(" done\n");
1180
1181         return rcode;
1182 }
1183
1184 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1185 static int sector_erased(flash_info_t *info, int i)
1186 {
1187         int k;
1188         int size;
1189         u32 *flash;
1190
1191         /*
1192          * Check if whole sector is erased
1193          */
1194         size = flash_sector_size(info, i);
1195         flash = (u32 *)info->start[i];
1196         /* divide by 4 for longword access */
1197         size = size >> 2;
1198
1199         for (k = 0; k < size; k++) {
1200                 if (flash_read32(flash++) != 0xffffffff)
1201                         return 0;       /* not erased */
1202         }
1203
1204         return 1;                       /* erased */
1205 }
1206 #endif /* CONFIG_SYS_FLASH_EMPTY_INFO */
1207
1208 void flash_print_info(flash_info_t *info)
1209 {
1210         int i;
1211
1212         if (info->flash_id != FLASH_MAN_CFI) {
1213                 puts("missing or unknown FLASH type\n");
1214                 return;
1215         }
1216
1217         printf("%s flash (%d x %d)",
1218                info->name,
1219                (info->portwidth << 3), (info->chipwidth << 3));
1220         if (info->size < 1024 * 1024)
1221                 printf("  Size: %ld kB in %d Sectors\n",
1222                        info->size >> 10, info->sector_count);
1223         else
1224                 printf("  Size: %ld MB in %d Sectors\n",
1225                        info->size >> 20, info->sector_count);
1226         printf("  ");
1227         switch (info->vendor) {
1228         case CFI_CMDSET_INTEL_PROG_REGIONS:
1229                 printf("Intel Prog Regions");
1230                 break;
1231         case CFI_CMDSET_INTEL_STANDARD:
1232                 printf("Intel Standard");
1233                 break;
1234         case CFI_CMDSET_INTEL_EXTENDED:
1235                 printf("Intel Extended");
1236                 break;
1237         case CFI_CMDSET_AMD_STANDARD:
1238                 printf("AMD Standard");
1239                 break;
1240         case CFI_CMDSET_AMD_EXTENDED:
1241                 printf("AMD Extended");
1242                 break;
1243 #ifdef CONFIG_FLASH_CFI_LEGACY
1244         case CFI_CMDSET_AMD_LEGACY:
1245                 printf("AMD Legacy");
1246                 break;
1247 #endif
1248         default:
1249                 printf("Unknown (%d)", info->vendor);
1250                 break;
1251         }
1252         printf(" command set, Manufacturer ID: 0x%02X, Device ID: 0x",
1253                info->manufacturer_id);
1254         printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1255                info->device_id);
1256         if ((info->device_id & 0xff) == 0x7E) {
1257                 printf(info->chipwidth == FLASH_CFI_16BIT ? "%04X" : "%02X",
1258                        info->device_id2);
1259         }
1260         if (info->vendor == CFI_CMDSET_AMD_STANDARD && info->legacy_unlock)
1261                 printf("\n  Advanced Sector Protection (PPB) enabled");
1262         printf("\n  Erase timeout: %ld ms, write timeout: %ld ms\n",
1263                info->erase_blk_tout, info->write_tout);
1264         if (info->buffer_size > 1) {
1265                 printf("  Buffer write timeout: %ld ms, ",
1266                        info->buffer_write_tout);
1267                 printf("buffer size: %d bytes\n", info->buffer_size);
1268         }
1269
1270         puts("\n  Sector Start Addresses:");
1271         for (i = 0; i < info->sector_count; ++i) {
1272                 if (ctrlc())
1273                         break;
1274                 if ((i % 5) == 0)
1275                         putc('\n');
1276 #ifdef CONFIG_SYS_FLASH_EMPTY_INFO
1277                 /* print empty and read-only info */
1278                 printf("  %08lX %c %s ",
1279                        info->start[i],
1280                        sector_erased(info, i) ? 'E' : ' ',
1281                        info->protect[i] ? "RO" : "  ");
1282 #else   /* ! CONFIG_SYS_FLASH_EMPTY_INFO */
1283                 printf("  %08lX   %s ",
1284                        info->start[i],
1285                        info->protect[i] ? "RO" : "  ");
1286 #endif
1287         }
1288         putc('\n');
1289 }
1290
1291 /*-----------------------------------------------------------------------
1292  * This is used in a few places in write_buf() to show programming
1293  * progress.  Making it a function is nasty because it needs to do side
1294  * effect updates to digit and dots.  Repeated code is nasty too, so
1295  * we define it once here.
1296  */
1297 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1298 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub) \
1299         if (flash_verbose) { \
1300                 dots -= dots_sub; \
1301                 if (scale > 0 && dots <= 0) { \
1302                         if ((digit % 5) == 0) \
1303                                 printf("%d", digit / 5); \
1304                         else \
1305                                 putc('.'); \
1306                         digit--; \
1307                         dots += scale; \
1308                 } \
1309         }
1310 #else
1311 #define FLASH_SHOW_PROGRESS(scale, dots, digit, dots_sub)
1312 #endif
1313
1314 /*-----------------------------------------------------------------------
1315  * Copy memory to flash, returns:
1316  * 0 - OK
1317  * 1 - write timeout
1318  * 2 - Flash not erased
1319  */
1320 int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
1321 {
1322         ulong wp;
1323         uchar *p;
1324         int aln;
1325         cfiword_t cword;
1326         int i, rc;
1327 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1328         int buffered_size;
1329 #endif
1330 #ifdef CONFIG_FLASH_SHOW_PROGRESS
1331         int digit = CONFIG_FLASH_SHOW_PROGRESS;
1332         int scale = 0;
1333         int dots  = 0;
1334
1335         /*
1336          * Suppress if there are fewer than CONFIG_FLASH_SHOW_PROGRESS writes.
1337          */
1338         if (cnt >= CONFIG_FLASH_SHOW_PROGRESS) {
1339                 scale = (int)((cnt + CONFIG_FLASH_SHOW_PROGRESS - 1) /
1340                         CONFIG_FLASH_SHOW_PROGRESS);
1341         }
1342 #endif
1343
1344         /* get lower aligned address */
1345         wp = (addr & ~(info->portwidth - 1));
1346
1347         /* handle unaligned start */
1348         aln = addr - wp;
1349         if (aln != 0) {
1350                 cword.w32 = 0;
1351                 p = (uchar *)wp;
1352                 for (i = 0; i < aln; ++i)
1353                         flash_add_byte(info, &cword, flash_read8(p + i));
1354
1355                 for (; (i < info->portwidth) && (cnt > 0); i++) {
1356                         flash_add_byte(info, &cword, *src++);
1357                         cnt--;
1358                 }
1359                 for (; (cnt == 0) && (i < info->portwidth); ++i)
1360                         flash_add_byte(info, &cword, flash_read8(p + i));
1361
1362                 rc = flash_write_cfiword(info, wp, cword);
1363                 if (rc != 0)
1364                         return rc;
1365
1366                 wp += i;
1367                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1368         }
1369
1370         /* handle the aligned part */
1371 #ifdef CONFIG_SYS_FLASH_USE_BUFFER_WRITE
1372         buffered_size = (info->portwidth / info->chipwidth);
1373         buffered_size *= info->buffer_size;
1374         while (cnt >= info->portwidth) {
1375                 /* prohibit buffer write when buffer_size is 1 */
1376                 if (info->buffer_size == 1) {
1377                         cword.w32 = 0;
1378                         for (i = 0; i < info->portwidth; i++)
1379                                 flash_add_byte(info, &cword, *src++);
1380                         rc = flash_write_cfiword(info, wp, cword);
1381                         if (rc != 0)
1382                                 return rc;
1383                         wp += info->portwidth;
1384                         cnt -= info->portwidth;
1385                         continue;
1386                 }
1387
1388                 /* write buffer until next buffered_size aligned boundary */
1389                 i = buffered_size - (wp % buffered_size);
1390                 if (i > cnt)
1391                         i = cnt;
1392                 rc = flash_write_cfibuffer(info, wp, src, i);
1393                 if (rc != ERR_OK)
1394                         return rc;
1395                 i -= i & (info->portwidth - 1);
1396                 wp += i;
1397                 src += i;
1398                 cnt -= i;
1399                 FLASH_SHOW_PROGRESS(scale, dots, digit, i);
1400                 /* Only check every once in a while */
1401                 if ((cnt & 0xFFFF) < buffered_size && ctrlc())
1402                         return ERR_ABORTED;
1403         }
1404 #else
1405         while (cnt >= info->portwidth) {
1406                 cword.w32 = 0;
1407                 for (i = 0; i < info->portwidth; i++)
1408                         flash_add_byte(info, &cword, *src++);
1409                 rc = flash_write_cfiword(info, wp, cword);
1410                 if (rc != 0)
1411                         return rc;
1412                 wp += info->portwidth;
1413                 cnt -= info->portwidth;
1414                 FLASH_SHOW_PROGRESS(scale, dots, digit, info->portwidth);
1415                 /* Only check every once in a while */
1416                 if ((cnt & 0xFFFF) < info->portwidth && ctrlc())
1417                         return ERR_ABORTED;
1418         }
1419 #endif /* CONFIG_SYS_FLASH_USE_BUFFER_WRITE */
1420
1421         if (cnt == 0)
1422                 return (0);
1423
1424         /*
1425          * handle unaligned tail bytes
1426          */
1427         cword.w32 = 0;
1428         p = (uchar *)wp;
1429         for (i = 0; (i < info->portwidth) && (cnt > 0); ++i) {
1430                 flash_add_byte(info, &cword, *src++);
1431                 --cnt;
1432         }
1433         for (; i < info->portwidth; ++i)
1434                 flash_add_byte(info, &cword, flash_read8(p + i));
1435
1436         return flash_write_cfiword(info, wp, cword);
1437 }
1438
1439 static inline int manufact_match(flash_info_t *info, u32 manu)
1440 {
1441         return info->manufacturer_id == ((manu & FLASH_VENDMASK) >> 16);
1442 }
1443
1444 /*-----------------------------------------------------------------------
1445  */
1446 #ifdef CONFIG_SYS_FLASH_PROTECTION
1447
1448 static int cfi_protect_bugfix(flash_info_t *info, long sector, int prot)
1449 {
1450         if (manufact_match(info, INTEL_MANUFACT) &&
1451             info->device_id == NUMONYX_256MBIT) {
1452                 /*
1453                  * see errata called
1454                  * "Numonyx Axcell P33/P30 Specification Update" :)
1455                  */
1456                 flash_write_cmd(info, sector, 0, FLASH_CMD_READ_ID);
1457                 if (!flash_isequal(info, sector, FLASH_OFFSET_PROTECT,
1458                                    prot)) {
1459                         /*
1460                          * cmd must come before FLASH_CMD_PROTECT + 20us
1461                          * Disable interrupts which might cause a timeout here.
1462                          */
1463                         int flag = disable_interrupts();
1464                         unsigned short cmd;
1465
1466                         if (prot)
1467                                 cmd = FLASH_CMD_PROTECT_SET;
1468                         else
1469                                 cmd = FLASH_CMD_PROTECT_CLEAR;
1470
1471                         flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1472                         flash_write_cmd(info, sector, 0, cmd);
1473                         /* re-enable interrupts if necessary */
1474                         if (flag)
1475                                 enable_interrupts();
1476                 }
1477                 return 1;
1478         }
1479         return 0;
1480 }
1481
1482 int flash_real_protect(flash_info_t *info, long sector, int prot)
1483 {
1484         int retcode = 0;
1485
1486         switch (info->vendor) {
1487         case CFI_CMDSET_INTEL_PROG_REGIONS:
1488         case CFI_CMDSET_INTEL_STANDARD:
1489         case CFI_CMDSET_INTEL_EXTENDED:
1490                 if (!cfi_protect_bugfix(info, sector, prot)) {
1491                         flash_write_cmd(info, sector, 0,
1492                                         FLASH_CMD_CLEAR_STATUS);
1493                         flash_write_cmd(info, sector, 0,
1494                                         FLASH_CMD_PROTECT);
1495                         if (prot)
1496                                 flash_write_cmd(info, sector, 0,
1497                                                 FLASH_CMD_PROTECT_SET);
1498                         else
1499                                 flash_write_cmd(info, sector, 0,
1500                                                 FLASH_CMD_PROTECT_CLEAR);
1501                 }
1502                 break;
1503         case CFI_CMDSET_AMD_EXTENDED:
1504         case CFI_CMDSET_AMD_STANDARD:
1505                 /* U-Boot only checks the first byte */
1506                 if (manufact_match(info, ATM_MANUFACT)) {
1507                         if (prot) {
1508                                 flash_unlock_seq(info, 0);
1509                                 flash_write_cmd(info, 0,
1510                                                 info->addr_unlock1,
1511                                                 ATM_CMD_SOFTLOCK_START);
1512                                 flash_unlock_seq(info, 0);
1513                                 flash_write_cmd(info, sector, 0,
1514                                                 ATM_CMD_LOCK_SECT);
1515                         } else {
1516                                 flash_write_cmd(info, 0,
1517                                                 info->addr_unlock1,
1518                                                 AMD_CMD_UNLOCK_START);
1519                                 if (info->device_id == ATM_ID_BV6416)
1520                                         flash_write_cmd(info, sector,
1521                                                         0, ATM_CMD_UNLOCK_SECT);
1522                         }
1523                 }
1524                 if (info->legacy_unlock) {
1525                         int flag = disable_interrupts();
1526                         int lock_flag;
1527
1528                         flash_unlock_seq(info, 0);
1529                         flash_write_cmd(info, 0, info->addr_unlock1,
1530                                         AMD_CMD_SET_PPB_ENTRY);
1531                         lock_flag = flash_isset(info, sector, 0, 0x01);
1532                         if (prot) {
1533                                 if (lock_flag) {
1534                                         flash_write_cmd(info, sector, 0,
1535                                                         AMD_CMD_PPB_LOCK_BC1);
1536                                         flash_write_cmd(info, sector, 0,
1537                                                         AMD_CMD_PPB_LOCK_BC2);
1538                                 }
1539                                 debug("sector %ld %slocked\n", sector,
1540                                       lock_flag ? "" : "already ");
1541                         } else {
1542                                 if (!lock_flag) {
1543                                         debug("unlock %ld\n", sector);
1544                                         flash_write_cmd(info, 0, 0,
1545                                                         AMD_CMD_PPB_UNLOCK_BC1);
1546                                         flash_write_cmd(info, 0, 0,
1547                                                         AMD_CMD_PPB_UNLOCK_BC2);
1548                                 }
1549                                 debug("sector %ld %sunlocked\n", sector,
1550                                       !lock_flag ? "" : "already ");
1551                         }
1552                         if (flag)
1553                                 enable_interrupts();
1554
1555                         if (flash_status_check(info, sector,
1556                                                info->erase_blk_tout,
1557                                                prot ? "protect" : "unprotect"))
1558                                 printf("status check error\n");
1559
1560                         flash_write_cmd(info, 0, 0,
1561                                         AMD_CMD_SET_PPB_EXIT_BC1);
1562                         flash_write_cmd(info, 0, 0,
1563                                         AMD_CMD_SET_PPB_EXIT_BC2);
1564                 }
1565                 break;
1566 #ifdef CONFIG_FLASH_CFI_LEGACY
1567         case CFI_CMDSET_AMD_LEGACY:
1568                 flash_write_cmd(info, sector, 0, FLASH_CMD_CLEAR_STATUS);
1569                 flash_write_cmd(info, sector, 0, FLASH_CMD_PROTECT);
1570                 if (prot)
1571                         flash_write_cmd(info, sector, 0,
1572                                         FLASH_CMD_PROTECT_SET);
1573                 else
1574                         flash_write_cmd(info, sector, 0,
1575                                         FLASH_CMD_PROTECT_CLEAR);
1576 #endif
1577         };
1578
1579         /*
1580          * Flash needs to be in status register read mode for
1581          * flash_full_status_check() to work correctly
1582          */
1583         flash_write_cmd(info, sector, 0, FLASH_CMD_READ_STATUS);
1584         retcode = flash_full_status_check(info, sector, info->erase_blk_tout,
1585                                           prot ? "protect" : "unprotect");
1586         if (retcode == 0) {
1587                 info->protect[sector] = prot;
1588
1589                 /*
1590                  * On some of Intel's flash chips (marked via legacy_unlock)
1591                  * unprotect unprotects all locking.
1592                  */
1593                 if (prot == 0 && info->legacy_unlock) {
1594                         flash_sect_t i;
1595
1596                         for (i = 0; i < info->sector_count; i++) {
1597                                 if (info->protect[i])
1598                                         flash_real_protect(info, i, 1);
1599                         }
1600                 }
1601         }
1602         return retcode;
1603 }
1604
1605 /*-----------------------------------------------------------------------
1606  * flash_read_user_serial - read the OneTimeProgramming cells
1607  */
1608 void flash_read_user_serial(flash_info_t *info, void *buffer, int offset,
1609                             int len)
1610 {
1611         uchar *src;
1612         uchar *dst;
1613
1614         dst = buffer;
1615         src = flash_map(info, 0, FLASH_OFFSET_USER_PROTECTION);
1616         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1617         memcpy(dst, src + offset, len);
1618         flash_write_cmd(info, 0, 0, info->cmd_reset);
1619         udelay(1);
1620         flash_unmap(info, 0, FLASH_OFFSET_USER_PROTECTION, src);
1621 }
1622
1623 /*
1624  * flash_read_factory_serial - read the device Id from the protection area
1625  */
1626 void flash_read_factory_serial(flash_info_t *info, void *buffer, int offset,
1627                                int len)
1628 {
1629         uchar *src;
1630
1631         src = flash_map(info, 0, FLASH_OFFSET_INTEL_PROTECTION);
1632         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1633         memcpy(buffer, src + offset, len);
1634         flash_write_cmd(info, 0, 0, info->cmd_reset);
1635         udelay(1);
1636         flash_unmap(info, 0, FLASH_OFFSET_INTEL_PROTECTION, src);
1637 }
1638
1639 #endif /* CONFIG_SYS_FLASH_PROTECTION */
1640
1641 /*-----------------------------------------------------------------------
1642  * Reverse the order of the erase regions in the CFI QRY structure.
1643  * This is needed for chips that are either a) correctly detected as
1644  * top-boot, or b) buggy.
1645  */
1646 static void cfi_reverse_geometry(struct cfi_qry *qry)
1647 {
1648         unsigned int i, j;
1649         u32 tmp;
1650
1651         for (i = 0, j = qry->num_erase_regions - 1; i < j; i++, j--) {
1652                 tmp = get_unaligned(&qry->erase_region_info[i]);
1653                 put_unaligned(get_unaligned(&qry->erase_region_info[j]),
1654                               &qry->erase_region_info[i]);
1655                 put_unaligned(tmp, &qry->erase_region_info[j]);
1656         }
1657 }
1658
1659 /*-----------------------------------------------------------------------
1660  * read jedec ids from device and set corresponding fields in info struct
1661  *
1662  * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
1663  *
1664  */
1665 static void cmdset_intel_read_jedec_ids(flash_info_t *info)
1666 {
1667         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1668         udelay(1);
1669         flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
1670         udelay(1000); /* some flash are slow to respond */
1671         info->manufacturer_id = flash_read_uchar(info,
1672                                                  FLASH_OFFSET_MANUFACTURER_ID);
1673         info->device_id = (info->chipwidth == FLASH_CFI_16BIT) ?
1674                         flash_read_word(info, FLASH_OFFSET_DEVICE_ID) :
1675                         flash_read_uchar(info, FLASH_OFFSET_DEVICE_ID);
1676         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1677 }
1678
1679 static int cmdset_intel_init(flash_info_t *info, struct cfi_qry *qry)
1680 {
1681         info->cmd_reset = FLASH_CMD_RESET;
1682
1683         cmdset_intel_read_jedec_ids(info);
1684         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1685
1686 #ifdef CONFIG_SYS_FLASH_PROTECTION
1687         /* read legacy lock/unlock bit from intel flash */
1688         if (info->ext_addr) {
1689                 info->legacy_unlock =
1690                         flash_read_uchar(info, info->ext_addr + 5) & 0x08;
1691         }
1692 #endif
1693
1694         return 0;
1695 }
1696
1697 static void cmdset_amd_read_jedec_ids(flash_info_t *info)
1698 {
1699         ushort bank_id = 0;
1700         uchar  manu_id;
1701         uchar  feature;
1702
1703         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1704         flash_unlock_seq(info, 0);
1705         flash_write_cmd(info, 0, info->addr_unlock1, FLASH_CMD_READ_ID);
1706         udelay(1000); /* some flash are slow to respond */
1707
1708         manu_id = flash_read_uchar(info, FLASH_OFFSET_MANUFACTURER_ID);
1709         /* JEDEC JEP106Z specifies ID codes up to bank 7 */
1710         while (manu_id == FLASH_CONTINUATION_CODE && bank_id < 0x800) {
1711                 bank_id += 0x100;
1712                 manu_id = flash_read_uchar(info,
1713                                            bank_id | FLASH_OFFSET_MANUFACTURER_ID);
1714         }
1715         info->manufacturer_id = manu_id;
1716
1717         debug("info->ext_addr = 0x%x, cfi_version = 0x%x\n",
1718               info->ext_addr, info->cfi_version);
1719         if (info->ext_addr && info->cfi_version >= 0x3134) {
1720                 /* read software feature (at 0x53) */
1721                 feature = flash_read_uchar(info, info->ext_addr + 0x13);
1722                 debug("feature = 0x%x\n", feature);
1723                 info->sr_supported = feature & 0x1;
1724         }
1725
1726         switch (info->chipwidth) {
1727         case FLASH_CFI_8BIT:
1728                 info->device_id = flash_read_uchar(info,
1729                                                    FLASH_OFFSET_DEVICE_ID);
1730                 if (info->device_id == 0x7E) {
1731                         /* AMD 3-byte (expanded) device ids */
1732                         info->device_id2 = flash_read_uchar(info,
1733                                                             FLASH_OFFSET_DEVICE_ID2);
1734                         info->device_id2 <<= 8;
1735                         info->device_id2 |= flash_read_uchar(info,
1736                                                 FLASH_OFFSET_DEVICE_ID3);
1737                 }
1738                 break;
1739         case FLASH_CFI_16BIT:
1740                 info->device_id = flash_read_word(info,
1741                                                   FLASH_OFFSET_DEVICE_ID);
1742                 if ((info->device_id & 0xff) == 0x7E) {
1743                         /* AMD 3-byte (expanded) device ids */
1744                         info->device_id2 = flash_read_uchar(info,
1745                                                             FLASH_OFFSET_DEVICE_ID2);
1746                         info->device_id2 <<= 8;
1747                         info->device_id2 |= flash_read_uchar(info,
1748                                                 FLASH_OFFSET_DEVICE_ID3);
1749                 }
1750                 break;
1751         default:
1752                 break;
1753         }
1754         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1755         udelay(1);
1756 }
1757
1758 static int cmdset_amd_init(flash_info_t *info, struct cfi_qry *qry)
1759 {
1760         info->cmd_reset = AMD_CMD_RESET;
1761         info->cmd_erase_sector = AMD_CMD_ERASE_SECTOR;
1762
1763         cmdset_amd_read_jedec_ids(info);
1764         flash_write_cmd(info, 0, info->cfi_offset, FLASH_CMD_CFI);
1765
1766 #ifdef CONFIG_SYS_FLASH_PROTECTION
1767         if (info->ext_addr) {
1768                 /* read sector protect/unprotect scheme (at 0x49) */
1769                 if (flash_read_uchar(info, info->ext_addr + 9) == 0x8)
1770                         info->legacy_unlock = 1;
1771         }
1772 #endif
1773
1774         return 0;
1775 }
1776
1777 #ifdef CONFIG_FLASH_CFI_LEGACY
1778 static void flash_read_jedec_ids(flash_info_t *info)
1779 {
1780         info->manufacturer_id = 0;
1781         info->device_id       = 0;
1782         info->device_id2      = 0;
1783
1784         switch (info->vendor) {
1785         case CFI_CMDSET_INTEL_PROG_REGIONS:
1786         case CFI_CMDSET_INTEL_STANDARD:
1787         case CFI_CMDSET_INTEL_EXTENDED:
1788                 cmdset_intel_read_jedec_ids(info);
1789                 break;
1790         case CFI_CMDSET_AMD_STANDARD:
1791         case CFI_CMDSET_AMD_EXTENDED:
1792                 cmdset_amd_read_jedec_ids(info);
1793                 break;
1794         default:
1795                 break;
1796         }
1797 }
1798
1799 /*-----------------------------------------------------------------------
1800  * Call board code to request info about non-CFI flash.
1801  * board_flash_get_legacy needs to fill in at least:
1802  * info->portwidth, info->chipwidth and info->interface for Jedec probing.
1803  */
1804 static int flash_detect_legacy(phys_addr_t base, int banknum)
1805 {
1806         flash_info_t *info = &flash_info[banknum];
1807
1808         if (board_flash_get_legacy(base, banknum, info)) {
1809                 /* board code may have filled info completely. If not, we
1810                  * use JEDEC ID probing.
1811                  */
1812                 if (!info->vendor) {
1813                         int modes[] = {
1814                                 CFI_CMDSET_AMD_STANDARD,
1815                                 CFI_CMDSET_INTEL_STANDARD
1816                         };
1817                         int i;
1818
1819                         for (i = 0; i < ARRAY_SIZE(modes); i++) {
1820                                 info->vendor = modes[i];
1821                                 info->start[0] =
1822                                         (ulong)map_physmem(base,
1823                                                            info->portwidth,
1824                                                            MAP_NOCACHE);
1825                                 if (info->portwidth == FLASH_CFI_8BIT &&
1826                                     info->interface == FLASH_CFI_X8X16) {
1827                                         info->addr_unlock1 = 0x2AAA;
1828                                         info->addr_unlock2 = 0x5555;
1829                                 } else {
1830                                         info->addr_unlock1 = 0x5555;
1831                                         info->addr_unlock2 = 0x2AAA;
1832                                 }
1833                                 flash_read_jedec_ids(info);
1834                                 debug("JEDEC PROBE: ID %x %x %x\n",
1835                                       info->manufacturer_id,
1836                                       info->device_id,
1837                                       info->device_id2);
1838                                 if (jedec_flash_match(info, info->start[0]))
1839                                         break;
1840
1841                                 unmap_physmem((void *)info->start[0],
1842                                               info->portwidth);
1843                         }
1844                 }
1845
1846                 switch (info->vendor) {
1847                 case CFI_CMDSET_INTEL_PROG_REGIONS:
1848                 case CFI_CMDSET_INTEL_STANDARD:
1849                 case CFI_CMDSET_INTEL_EXTENDED:
1850                         info->cmd_reset = FLASH_CMD_RESET;
1851                         break;
1852                 case CFI_CMDSET_AMD_STANDARD:
1853                 case CFI_CMDSET_AMD_EXTENDED:
1854                 case CFI_CMDSET_AMD_LEGACY:
1855                         info->cmd_reset = AMD_CMD_RESET;
1856                         break;
1857                 }
1858                 info->flash_id = FLASH_MAN_CFI;
1859                 return 1;
1860         }
1861         return 0; /* use CFI */
1862 }
1863 #else
1864 static inline int flash_detect_legacy(phys_addr_t base, int banknum)
1865 {
1866         return 0; /* use CFI */
1867 }
1868 #endif
1869
1870 /*-----------------------------------------------------------------------
1871  * detect if flash is compatible with the Common Flash Interface (CFI)
1872  * http://www.jedec.org/download/search/jesd68.pdf
1873  */
1874 static void flash_read_cfi(flash_info_t *info, void *buf, unsigned int start,
1875                            size_t len)
1876 {
1877         u8 *p = buf;
1878         unsigned int i;
1879
1880         for (i = 0; i < len; i++)
1881                 p[i] = flash_read_uchar(info, start + i);
1882 }
1883
1884 static void __flash_cmd_reset(flash_info_t *info)
1885 {
1886         /*
1887          * We do not yet know what kind of commandset to use, so we issue
1888          * the reset command in both Intel and AMD variants, in the hope
1889          * that AMD flash roms ignore the Intel command.
1890          */
1891         flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
1892         udelay(1);
1893         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
1894 }
1895
1896 void flash_cmd_reset(flash_info_t *info)
1897         __attribute__((weak, alias("__flash_cmd_reset")));
1898
1899 static int __flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1900 {
1901         int cfi_offset;
1902
1903         /* Issue FLASH reset command */
1904         flash_cmd_reset(info);
1905
1906         for (cfi_offset = 0; cfi_offset < ARRAY_SIZE(flash_offset_cfi);
1907              cfi_offset++) {
1908                 flash_write_cmd(info, 0, flash_offset_cfi[cfi_offset],
1909                                 FLASH_CMD_CFI);
1910                 if (flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP, 'Q') &&
1911                     flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R') &&
1912                     flash_isequal(info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
1913                         flash_read_cfi(info, qry, FLASH_OFFSET_CFI_RESP,
1914                                        sizeof(struct cfi_qry));
1915                         info->interface = le16_to_cpu(qry->interface_desc);
1916
1917                         info->cfi_offset = flash_offset_cfi[cfi_offset];
1918                         debug("device interface is %d\n",
1919                               info->interface);
1920                         debug("found port %d chip %d ",
1921                               info->portwidth, info->chipwidth);
1922                         debug("port %d bits chip %d bits\n",
1923                               info->portwidth << CFI_FLASH_SHIFT_WIDTH,
1924                               info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
1925
1926                         /* calculate command offsets as in the Linux driver */
1927                         info->addr_unlock1 = 0x555;
1928                         info->addr_unlock2 = 0x2aa;
1929
1930                         /*
1931                          * modify the unlock address if we are
1932                          * in compatibility mode
1933                          */
1934                         if (/* x8/x16 in x8 mode */
1935                             (info->chipwidth == FLASH_CFI_BY8 &&
1936                                 info->interface == FLASH_CFI_X8X16) ||
1937                             /* x16/x32 in x16 mode */
1938                             (info->chipwidth == FLASH_CFI_BY16 &&
1939                                 info->interface == FLASH_CFI_X16X32)) {
1940                                 info->addr_unlock1 = 0xaaa;
1941                                 info->addr_unlock2 = 0x555;
1942                         }
1943
1944                         info->name = "CFI conformant";
1945                         return 1;
1946                 }
1947         }
1948
1949         return 0;
1950 }
1951
1952 static int flash_detect_cfi(flash_info_t *info, struct cfi_qry *qry)
1953 {
1954         debug("flash detect cfi\n");
1955
1956         for (info->portwidth = CONFIG_SYS_FLASH_CFI_WIDTH;
1957              info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
1958                 for (info->chipwidth = FLASH_CFI_BY8;
1959                      info->chipwidth <= info->portwidth;
1960                      info->chipwidth <<= 1)
1961                         if (__flash_detect_cfi(info, qry))
1962                                 return 1;
1963         }
1964         debug("not found\n");
1965         return 0;
1966 }
1967
1968 /*
1969  * Manufacturer-specific quirks. Add workarounds for geometry
1970  * reversal, etc. here.
1971  */
1972 static void flash_fixup_amd(flash_info_t *info, struct cfi_qry *qry)
1973 {
1974         /* check if flash geometry needs reversal */
1975         if (qry->num_erase_regions > 1) {
1976                 /* reverse geometry if top boot part */
1977                 if (info->cfi_version < 0x3131) {
1978                         /* CFI < 1.1, try to guess from device id */
1979                         if ((info->device_id & 0x80) != 0)
1980                                 cfi_reverse_geometry(qry);
1981                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
1982                         /* CFI >= 1.1, deduct from top/bottom flag */
1983                         /* note: ext_addr is valid since cfi_version > 0 */
1984                         cfi_reverse_geometry(qry);
1985                 }
1986         }
1987 }
1988
1989 static void flash_fixup_atmel(flash_info_t *info, struct cfi_qry *qry)
1990 {
1991         int reverse_geometry = 0;
1992
1993         /* Check the "top boot" bit in the PRI */
1994         if (info->ext_addr && !(flash_read_uchar(info, info->ext_addr + 6) & 1))
1995                 reverse_geometry = 1;
1996
1997         /* AT49BV6416(T) list the erase regions in the wrong order.
1998          * However, the device ID is identical with the non-broken
1999          * AT49BV642D they differ in the high byte.
2000          */
2001         if (info->device_id == 0xd6 || info->device_id == 0xd2)
2002                 reverse_geometry = !reverse_geometry;
2003
2004         if (reverse_geometry)
2005                 cfi_reverse_geometry(qry);
2006 }
2007
2008 static void flash_fixup_stm(flash_info_t *info, struct cfi_qry *qry)
2009 {
2010         /* check if flash geometry needs reversal */
2011         if (qry->num_erase_regions > 1) {
2012                 /* reverse geometry if top boot part */
2013                 if (info->cfi_version < 0x3131) {
2014                         /* CFI < 1.1, guess by device id */
2015                         if (info->device_id == 0x22CA || /* M29W320DT */
2016                             info->device_id == 0x2256 || /* M29W320ET */
2017                             info->device_id == 0x22D7) { /* M29W800DT */
2018                                 cfi_reverse_geometry(qry);
2019                         }
2020                 } else if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
2021                         /* CFI >= 1.1, deduct from top/bottom flag */
2022                         /* note: ext_addr is valid since cfi_version > 0 */
2023                         cfi_reverse_geometry(qry);
2024                 }
2025         }
2026 }
2027
2028 static void flash_fixup_sst(flash_info_t *info, struct cfi_qry *qry)
2029 {
2030         /*
2031          * SST, for many recent nor parallel flashes, says they are
2032          * CFI-conformant. This is not true, since qry struct.
2033          * reports a std. AMD command set (0x0002), while SST allows to
2034          * erase two different sector sizes for the same memory.
2035          * 64KB sector (SST call it block)  needs 0x30 to be erased.
2036          * 4KB  sector (SST call it sector) needs 0x50 to be erased.
2037          * Since CFI query detect the 4KB number of sectors, users expects
2038          * a sector granularity of 4KB, and it is here set.
2039          */
2040         if (info->device_id == 0x5D23 || /* SST39VF3201B */
2041             info->device_id == 0x5C23) { /* SST39VF3202B */
2042                 /* set sector granularity to 4KB */
2043                 info->cmd_erase_sector = 0x50;
2044         }
2045 }
2046
2047 static void flash_fixup_num(flash_info_t *info, struct cfi_qry *qry)
2048 {
2049         /*
2050          * The M29EW devices seem to report the CFI information wrong
2051          * when it's in 8 bit mode.
2052          * There's an app note from Numonyx on this issue.
2053          * So adjust the buffer size for M29EW while operating in 8-bit mode
2054          */
2055         if (qry->max_buf_write_size > 0x8 &&
2056             info->device_id == 0x7E &&
2057             (info->device_id2 == 0x2201 ||
2058              info->device_id2 == 0x2301 ||
2059              info->device_id2 == 0x2801 ||
2060              info->device_id2 == 0x4801)) {
2061                 debug("Adjusted buffer size on Numonyx flash");
2062                 debug(" M29EW family in 8 bit mode\n");
2063                 qry->max_buf_write_size = 0x8;
2064         }
2065 }
2066
2067 /*
2068  * The following code cannot be run from FLASH!
2069  *
2070  */
2071 ulong flash_get_size(phys_addr_t base, int banknum)
2072 {
2073         flash_info_t *info = &flash_info[banknum];
2074         int i, j;
2075         flash_sect_t sect_cnt;
2076         phys_addr_t sector;
2077         unsigned long tmp;
2078         int size_ratio;
2079         uchar num_erase_regions;
2080         int erase_region_size;
2081         int erase_region_count;
2082         struct cfi_qry qry;
2083         unsigned long max_size;
2084
2085         memset(&qry, 0, sizeof(qry));
2086
2087         info->ext_addr = 0;
2088         info->cfi_version = 0;
2089 #ifdef CONFIG_SYS_FLASH_PROTECTION
2090         info->legacy_unlock = 0;
2091 #endif
2092
2093         info->start[0] = (ulong)map_physmem(base, info->portwidth, MAP_NOCACHE);
2094
2095         if (flash_detect_cfi(info, &qry)) {
2096                 info->vendor = le16_to_cpu(get_unaligned(&qry.p_id));
2097                 info->ext_addr = le16_to_cpu(get_unaligned(&qry.p_adr));
2098                 num_erase_regions = qry.num_erase_regions;
2099
2100                 if (info->ext_addr) {
2101                         info->cfi_version = (ushort)flash_read_uchar(info,
2102                                                 info->ext_addr + 3) << 8;
2103                         info->cfi_version |= (ushort)flash_read_uchar(info,
2104                                                 info->ext_addr + 4);
2105                 }
2106
2107 #ifdef DEBUG
2108                 flash_printqry(&qry);
2109 #endif
2110
2111                 switch (info->vendor) {
2112                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2113                 case CFI_CMDSET_INTEL_STANDARD:
2114                 case CFI_CMDSET_INTEL_EXTENDED:
2115                         cmdset_intel_init(info, &qry);
2116                         break;
2117                 case CFI_CMDSET_AMD_STANDARD:
2118                 case CFI_CMDSET_AMD_EXTENDED:
2119                         cmdset_amd_init(info, &qry);
2120                         break;
2121                 default:
2122                         printf("CFI: Unknown command set 0x%x\n",
2123                                info->vendor);
2124                         /*
2125                          * Unfortunately, this means we don't know how
2126                          * to get the chip back to Read mode. Might
2127                          * as well try an Intel-style reset...
2128                          */
2129                         flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
2130                         return 0;
2131                 }
2132
2133                 /* Do manufacturer-specific fixups */
2134                 switch (info->manufacturer_id) {
2135                 case 0x0001: /* AMD */
2136                 case 0x0037: /* AMIC */
2137                         flash_fixup_amd(info, &qry);
2138                         break;
2139                 case 0x001f:
2140                         flash_fixup_atmel(info, &qry);
2141                         break;
2142                 case 0x0020:
2143                         flash_fixup_stm(info, &qry);
2144                         break;
2145                 case 0x00bf: /* SST */
2146                         flash_fixup_sst(info, &qry);
2147                         break;
2148                 case 0x0089: /* Numonyx */
2149                         flash_fixup_num(info, &qry);
2150                         break;
2151                 }
2152
2153                 debug("manufacturer is %d\n", info->vendor);
2154                 debug("manufacturer id is 0x%x\n", info->manufacturer_id);
2155                 debug("device id is 0x%x\n", info->device_id);
2156                 debug("device id2 is 0x%x\n", info->device_id2);
2157                 debug("cfi version is 0x%04x\n", info->cfi_version);
2158
2159                 size_ratio = info->portwidth / info->chipwidth;
2160                 /* if the chip is x8/x16 reduce the ratio by half */
2161                 if (info->interface == FLASH_CFI_X8X16 &&
2162                     info->chipwidth == FLASH_CFI_BY8) {
2163                         size_ratio >>= 1;
2164                 }
2165                 debug("size_ratio %d port %d bits chip %d bits\n",
2166                       size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
2167                       info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
2168                 info->size = 1 << qry.dev_size;
2169                 /* multiply the size by the number of chips */
2170                 info->size *= size_ratio;
2171                 max_size = cfi_flash_bank_size(banknum);
2172                 if (max_size && info->size > max_size) {
2173                         debug("[truncated from %ldMiB]", info->size >> 20);
2174                         info->size = max_size;
2175                 }
2176                 debug("found %d erase regions\n", num_erase_regions);
2177                 sect_cnt = 0;
2178                 sector = base;
2179                 for (i = 0; i < num_erase_regions; i++) {
2180                         if (i > NUM_ERASE_REGIONS) {
2181                                 printf("%d erase regions found, only %d used\n",
2182                                        num_erase_regions, NUM_ERASE_REGIONS);
2183                                 break;
2184                         }
2185
2186                         tmp = le32_to_cpu(get_unaligned(
2187                                                 &qry.erase_region_info[i]));
2188                         debug("erase region %u: 0x%08lx\n", i, tmp);
2189
2190                         erase_region_count = (tmp & 0xffff) + 1;
2191                         tmp >>= 16;
2192                         erase_region_size =
2193                                 (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
2194                         debug("erase_region_count = %d ", erase_region_count);
2195                         debug("erase_region_size = %d\n", erase_region_size);
2196                         for (j = 0; j < erase_region_count; j++) {
2197                                 if (sector - base >= info->size)
2198                                         break;
2199                                 if (sect_cnt >= CONFIG_SYS_MAX_FLASH_SECT) {
2200                                         printf("ERROR: too many flash sectors\n");
2201                                         break;
2202                                 }
2203                                 info->start[sect_cnt] =
2204                                         (ulong)map_physmem(sector,
2205                                                            info->portwidth,
2206                                                            MAP_NOCACHE);
2207                                 sector += (erase_region_size * size_ratio);
2208
2209                                 /*
2210                                  * Only read protection status from
2211                                  * supported devices (intel...)
2212                                  */
2213                                 switch (info->vendor) {
2214                                 case CFI_CMDSET_INTEL_PROG_REGIONS:
2215                                 case CFI_CMDSET_INTEL_EXTENDED:
2216                                 case CFI_CMDSET_INTEL_STANDARD:
2217                                         /*
2218                                          * Set flash to read-id mode. Otherwise
2219                                          * reading protected status is not
2220                                          * guaranteed.
2221                                          */
2222                                         flash_write_cmd(info, sect_cnt, 0,
2223                                                         FLASH_CMD_READ_ID);
2224                                         info->protect[sect_cnt] =
2225                                                 flash_isset(info, sect_cnt,
2226                                                             FLASH_OFFSET_PROTECT,
2227                                                             FLASH_STATUS_PROTECT);
2228                                         flash_write_cmd(info, sect_cnt, 0,
2229                                                         FLASH_CMD_RESET);
2230                                         break;
2231                                 case CFI_CMDSET_AMD_EXTENDED:
2232                                 case CFI_CMDSET_AMD_STANDARD:
2233                                         if (!info->legacy_unlock) {
2234                                                 /* default: not protected */
2235                                                 info->protect[sect_cnt] = 0;
2236                                                 break;
2237                                         }
2238
2239                                         /* Read protection (PPB) from sector */
2240                                         flash_write_cmd(info, 0, 0,
2241                                                         info->cmd_reset);
2242                                         flash_unlock_seq(info, 0);
2243                                         flash_write_cmd(info, 0,
2244                                                         info->addr_unlock1,
2245                                                         FLASH_CMD_READ_ID);
2246                                         info->protect[sect_cnt] =
2247                                                 flash_isset(
2248                                                         info, sect_cnt,
2249                                                         FLASH_OFFSET_PROTECT,
2250                                                         FLASH_STATUS_PROTECT);
2251                                         break;
2252                                 default:
2253                                         /* default: not protected */
2254                                         info->protect[sect_cnt] = 0;
2255                                 }
2256
2257                                 sect_cnt++;
2258                         }
2259                 }
2260
2261                 info->sector_count = sect_cnt;
2262                 info->buffer_size = 1 << le16_to_cpu(qry.max_buf_write_size);
2263                 tmp = 1 << qry.block_erase_timeout_typ;
2264                 info->erase_blk_tout = tmp *
2265                         (1 << qry.block_erase_timeout_max);
2266                 tmp = (1 << qry.buf_write_timeout_typ) *
2267                         (1 << qry.buf_write_timeout_max);
2268
2269                 /* round up when converting to ms */
2270                 info->buffer_write_tout = (tmp + 999) / 1000;
2271                 tmp = (1 << qry.word_write_timeout_typ) *
2272                         (1 << qry.word_write_timeout_max);
2273                 /* round up when converting to ms */
2274                 info->write_tout = (tmp + 999) / 1000;
2275                 info->flash_id = FLASH_MAN_CFI;
2276                 if (info->interface == FLASH_CFI_X8X16 &&
2277                     info->chipwidth == FLASH_CFI_BY8) {
2278                         /* XXX - Need to test on x8/x16 in parallel. */
2279                         info->portwidth >>= 1;
2280                 }
2281
2282                 flash_write_cmd(info, 0, 0, info->cmd_reset);
2283         }
2284
2285         return (info->size);
2286 }
2287
2288 #ifdef CONFIG_FLASH_CFI_MTD
2289 void flash_set_verbose(uint v)
2290 {
2291         flash_verbose = v;
2292 }
2293 #endif
2294
2295 static void cfi_flash_set_config_reg(u32 base, u16 val)
2296 {
2297 #ifdef CONFIG_SYS_CFI_FLASH_CONFIG_REGS
2298         /*
2299          * Only set this config register if really defined
2300          * to a valid value (0xffff is invalid)
2301          */
2302         if (val == 0xffff)
2303                 return;
2304
2305         /*
2306          * Set configuration register. Data is "encrypted" in the 16 lower
2307          * address bits.
2308          */
2309         flash_write16(FLASH_CMD_SETUP, (void *)(base + (val << 1)));
2310         flash_write16(FLASH_CMD_SET_CR_CONFIRM, (void *)(base + (val << 1)));
2311
2312         /*
2313          * Finally issue reset-command to bring device back to
2314          * read-array mode
2315          */
2316         flash_write16(FLASH_CMD_RESET, (void *)base);
2317 #endif
2318 }
2319
2320 /*-----------------------------------------------------------------------
2321  */
2322
2323 static void flash_protect_default(void)
2324 {
2325 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2326         int i;
2327         struct apl_s {
2328                 ulong start;
2329                 ulong size;
2330         } apl[] = CONFIG_SYS_FLASH_AUTOPROTECT_LIST;
2331 #endif
2332
2333         /* Monitor protection ON by default */
2334 #if defined(CONFIG_SYS_MONITOR_BASE) && \
2335         (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE) && \
2336         (!defined(CONFIG_MONITOR_IS_IN_RAM))
2337         flash_protect(FLAG_PROTECT_SET,
2338                       CONFIG_SYS_MONITOR_BASE,
2339                       CONFIG_SYS_MONITOR_BASE + monitor_flash_len  - 1,
2340                       flash_get_info(CONFIG_SYS_MONITOR_BASE));
2341 #endif
2342
2343         /* Environment protection ON by default */
2344 #ifdef CONFIG_ENV_IS_IN_FLASH
2345         flash_protect(FLAG_PROTECT_SET,
2346                       CONFIG_ENV_ADDR,
2347                       CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
2348                       flash_get_info(CONFIG_ENV_ADDR));
2349 #endif
2350
2351         /* Redundant environment protection ON by default */
2352 #ifdef CONFIG_ENV_ADDR_REDUND
2353         flash_protect(FLAG_PROTECT_SET,
2354                       CONFIG_ENV_ADDR_REDUND,
2355                       CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
2356                       flash_get_info(CONFIG_ENV_ADDR_REDUND));
2357 #endif
2358
2359 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
2360         for (i = 0; i < ARRAY_SIZE(apl); i++) {
2361                 debug("autoprotecting from %08lx to %08lx\n",
2362                       apl[i].start, apl[i].start + apl[i].size - 1);
2363                 flash_protect(FLAG_PROTECT_SET,
2364                               apl[i].start,
2365                               apl[i].start + apl[i].size - 1,
2366                               flash_get_info(apl[i].start));
2367         }
2368 #endif
2369 }
2370
2371 unsigned long flash_init(void)
2372 {
2373         unsigned long size = 0;
2374         int i;
2375
2376 #ifdef CONFIG_SYS_FLASH_PROTECTION
2377         /* read environment from EEPROM */
2378         char s[64];
2379
2380         env_get_f("unlock", s, sizeof(s));
2381 #endif
2382
2383 #ifdef CONFIG_CFI_FLASH /* for driver model */
2384         cfi_flash_init_dm();
2385 #endif
2386
2387         /* Init: no FLASHes known */
2388         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
2389                 flash_info[i].flash_id = FLASH_UNKNOWN;
2390
2391                 /* Optionally write flash configuration register */
2392                 cfi_flash_set_config_reg(cfi_flash_bank_addr(i),
2393                                          cfi_flash_config_reg(i));
2394
2395                 if (!flash_detect_legacy(cfi_flash_bank_addr(i), i))
2396                         flash_get_size(cfi_flash_bank_addr(i), i);
2397                 size += flash_info[i].size;
2398                 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
2399 #ifndef CONFIG_SYS_FLASH_QUIET_TEST
2400                         printf("## Unknown flash on Bank %d ", i + 1);
2401                         printf("- Size = 0x%08lx = %ld MB\n",
2402                                flash_info[i].size,
2403                                flash_info[i].size >> 20);
2404 #endif /* CONFIG_SYS_FLASH_QUIET_TEST */
2405                 }
2406 #ifdef CONFIG_SYS_FLASH_PROTECTION
2407                 else if (strcmp(s, "yes") == 0) {
2408                         /*
2409                          * Only the U-Boot image and it's environment
2410                          * is protected, all other sectors are
2411                          * unprotected (unlocked) if flash hardware
2412                          * protection is used (CONFIG_SYS_FLASH_PROTECTION)
2413                          * and the environment variable "unlock" is
2414                          * set to "yes".
2415                          */
2416                         if (flash_info[i].legacy_unlock) {
2417                                 int k;
2418
2419                                 /*
2420                                  * Disable legacy_unlock temporarily,
2421                                  * since flash_real_protect would
2422                                  * relock all other sectors again
2423                                  * otherwise.
2424                                  */
2425                                 flash_info[i].legacy_unlock = 0;
2426
2427                                 /*
2428                                  * Legacy unlocking (e.g. Intel J3) ->
2429                                  * unlock only one sector. This will
2430                                  * unlock all sectors.
2431                                  */
2432                                 flash_real_protect(&flash_info[i], 0, 0);
2433
2434                                 flash_info[i].legacy_unlock = 1;
2435
2436                                 /*
2437                                  * Manually mark other sectors as
2438                                  * unlocked (unprotected)
2439                                  */
2440                                 for (k = 1; k < flash_info[i].sector_count; k++)
2441                                         flash_info[i].protect[k] = 0;
2442                         } else {
2443                                 /*
2444                                  * No legancy unlocking -> unlock all sectors
2445                                  */
2446                                 flash_protect(FLAG_PROTECT_CLEAR,
2447                                               flash_info[i].start[0],
2448                                               flash_info[i].start[0]
2449                                               + flash_info[i].size - 1,
2450                                               &flash_info[i]);
2451                         }
2452                 }
2453 #endif /* CONFIG_SYS_FLASH_PROTECTION */
2454         }
2455
2456         flash_protect_default();
2457 #ifdef CONFIG_FLASH_CFI_MTD
2458         cfi_mtd_init();
2459 #endif
2460
2461         return (size);
2462 }
2463
2464 #ifdef CONFIG_CFI_FLASH /* for driver model */
2465 static int cfi_flash_probe(struct udevice *dev)
2466 {
2467         const fdt32_t *cell;
2468         int addrc, sizec;
2469         int len, idx;
2470
2471         addrc = dev_read_addr_cells(dev);
2472         sizec = dev_read_size_cells(dev);
2473
2474         /* decode regs; there may be multiple reg tuples. */
2475         cell = dev_read_prop(dev, "reg", &len);
2476         if (!cell)
2477                 return -ENOENT;
2478         idx = 0;
2479         len /= sizeof(fdt32_t);
2480         while (idx < len) {
2481                 phys_addr_t addr;
2482
2483                 addr = dev_translate_address(dev, cell + idx);
2484
2485                 flash_info[cfi_flash_num_flash_banks].dev = dev;
2486                 flash_info[cfi_flash_num_flash_banks].base = addr;
2487                 cfi_flash_num_flash_banks++;
2488
2489                 idx += addrc + sizec;
2490         }
2491         gd->bd->bi_flashstart = flash_info[0].base;
2492
2493         return 0;
2494 }
2495
2496 static const struct udevice_id cfi_flash_ids[] = {
2497         { .compatible = "cfi-flash" },
2498         { .compatible = "jedec-flash" },
2499         {}
2500 };
2501
2502 U_BOOT_DRIVER(cfi_flash) = {
2503         .name   = "cfi_flash",
2504         .id     = UCLASS_MTD,
2505         .of_match = cfi_flash_ids,
2506         .probe = cfi_flash_probe,
2507 };
2508 #endif /* CONFIG_CFI_FLASH */