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