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