1 /* 2 * CFI parallel flash with AMD command set emulation 3 * 4 * Copyright (c) 2005 Jocelyn Mayer 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 /* 21 * For now, this code can emulate flashes of 1, 2 or 4 bytes width. 22 * Supported commands/modes are: 23 * - flash read 24 * - flash write 25 * - flash ID read 26 * - sector erase 27 * - chip erase 28 * - unlock bypass command 29 * - CFI queries 30 * 31 * It does not support flash interleaving. 32 * It does not implement boot blocs with reduced size 33 * It does not implement software data protection as found in many real chips 34 * It does not implement erase suspend/resume commands 35 * It does not implement multiple sectors erase 36 */ 37 38 #include "qemu/osdep.h" 39 #include "hw/hw.h" 40 #include "hw/block/flash.h" 41 #include "qapi/error.h" 42 #include "qemu/timer.h" 43 #include "sysemu/block-backend.h" 44 #include "exec/address-spaces.h" 45 #include "qemu/host-utils.h" 46 #include "hw/sysbus.h" 47 48 //#define PFLASH_DEBUG 49 #ifdef PFLASH_DEBUG 50 #define DPRINTF(fmt, ...) \ 51 do { \ 52 fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__); \ 53 } while (0) 54 #else 55 #define DPRINTF(fmt, ...) do { } while (0) 56 #endif 57 58 #define PFLASH_LAZY_ROMD_THRESHOLD 42 59 60 #define CFI_PFLASH02(obj) OBJECT_CHECK(pflash_t, (obj), TYPE_CFI_PFLASH02) 61 62 struct pflash_t { 63 /*< private >*/ 64 SysBusDevice parent_obj; 65 /*< public >*/ 66 67 BlockBackend *blk; 68 uint32_t sector_len; 69 uint32_t nb_blocs; 70 uint32_t chip_len; 71 uint8_t mappings; 72 uint8_t width; 73 uint8_t be; 74 int wcycle; /* if 0, the flash is read normally */ 75 int bypass; 76 int ro; 77 uint8_t cmd; 78 uint8_t status; 79 /* FIXME: implement array device properties */ 80 uint16_t ident0; 81 uint16_t ident1; 82 uint16_t ident2; 83 uint16_t ident3; 84 uint16_t unlock_addr0; 85 uint16_t unlock_addr1; 86 uint8_t cfi_len; 87 uint8_t cfi_table[0x52]; 88 QEMUTimer *timer; 89 /* The device replicates the flash memory across its memory space. Emulate 90 * that by having a container (.mem) filled with an array of aliases 91 * (.mem_mappings) pointing to the flash memory (.orig_mem). 92 */ 93 MemoryRegion mem; 94 MemoryRegion *mem_mappings; /* array; one per mapping */ 95 MemoryRegion orig_mem; 96 int rom_mode; 97 int read_counter; /* used for lazy switch-back to rom mode */ 98 char *name; 99 void *storage; 100 }; 101 102 /* 103 * Set up replicated mappings of the same region. 104 */ 105 static void pflash_setup_mappings(pflash_t *pfl) 106 { 107 unsigned i; 108 hwaddr size = memory_region_size(&pfl->orig_mem); 109 110 memory_region_init(&pfl->mem, OBJECT(pfl), "pflash", pfl->mappings * size); 111 pfl->mem_mappings = g_new(MemoryRegion, pfl->mappings); 112 for (i = 0; i < pfl->mappings; ++i) { 113 memory_region_init_alias(&pfl->mem_mappings[i], OBJECT(pfl), 114 "pflash-alias", &pfl->orig_mem, 0, size); 115 memory_region_add_subregion(&pfl->mem, i * size, &pfl->mem_mappings[i]); 116 } 117 } 118 119 static void pflash_register_memory(pflash_t *pfl, int rom_mode) 120 { 121 memory_region_rom_device_set_romd(&pfl->orig_mem, rom_mode); 122 pfl->rom_mode = rom_mode; 123 } 124 125 static void pflash_timer (void *opaque) 126 { 127 pflash_t *pfl = opaque; 128 129 DPRINTF("%s: command %02x done\n", __func__, pfl->cmd); 130 /* Reset flash */ 131 pfl->status ^= 0x80; 132 if (pfl->bypass) { 133 pfl->wcycle = 2; 134 } else { 135 pflash_register_memory(pfl, 1); 136 pfl->wcycle = 0; 137 } 138 pfl->cmd = 0; 139 } 140 141 static uint32_t pflash_read (pflash_t *pfl, hwaddr offset, 142 int width, int be) 143 { 144 hwaddr boff; 145 uint32_t ret; 146 uint8_t *p; 147 148 DPRINTF("%s: offset " TARGET_FMT_plx "\n", __func__, offset); 149 ret = -1; 150 /* Lazy reset to ROMD mode after a certain amount of read accesses */ 151 if (!pfl->rom_mode && pfl->wcycle == 0 && 152 ++pfl->read_counter > PFLASH_LAZY_ROMD_THRESHOLD) { 153 pflash_register_memory(pfl, 1); 154 } 155 offset &= pfl->chip_len - 1; 156 boff = offset & 0xFF; 157 if (pfl->width == 2) 158 boff = boff >> 1; 159 else if (pfl->width == 4) 160 boff = boff >> 2; 161 switch (pfl->cmd) { 162 default: 163 /* This should never happen : reset state & treat it as a read*/ 164 DPRINTF("%s: unknown command state: %x\n", __func__, pfl->cmd); 165 pfl->wcycle = 0; 166 pfl->cmd = 0; 167 /* fall through to the read code */ 168 case 0x80: 169 /* We accept reads during second unlock sequence... */ 170 case 0x00: 171 flash_read: 172 /* Flash area read */ 173 p = pfl->storage; 174 switch (width) { 175 case 1: 176 ret = p[offset]; 177 // DPRINTF("%s: data offset %08x %02x\n", __func__, offset, ret); 178 break; 179 case 2: 180 if (be) { 181 ret = p[offset] << 8; 182 ret |= p[offset + 1]; 183 } else { 184 ret = p[offset]; 185 ret |= p[offset + 1] << 8; 186 } 187 // DPRINTF("%s: data offset %08x %04x\n", __func__, offset, ret); 188 break; 189 case 4: 190 if (be) { 191 ret = p[offset] << 24; 192 ret |= p[offset + 1] << 16; 193 ret |= p[offset + 2] << 8; 194 ret |= p[offset + 3]; 195 } else { 196 ret = p[offset]; 197 ret |= p[offset + 1] << 8; 198 ret |= p[offset + 2] << 16; 199 ret |= p[offset + 3] << 24; 200 } 201 // DPRINTF("%s: data offset %08x %08x\n", __func__, offset, ret); 202 break; 203 } 204 break; 205 case 0x90: 206 /* flash ID read */ 207 switch (boff) { 208 case 0x00: 209 case 0x01: 210 ret = boff & 0x01 ? pfl->ident1 : pfl->ident0; 211 break; 212 case 0x02: 213 ret = 0x00; /* Pretend all sectors are unprotected */ 214 break; 215 case 0x0E: 216 case 0x0F: 217 ret = boff & 0x01 ? pfl->ident3 : pfl->ident2; 218 if (ret == (uint8_t)-1) { 219 goto flash_read; 220 } 221 break; 222 default: 223 goto flash_read; 224 } 225 DPRINTF("%s: ID " TARGET_FMT_plx " %x\n", __func__, boff, ret); 226 break; 227 case 0xA0: 228 case 0x10: 229 case 0x30: 230 /* Status register read */ 231 ret = pfl->status; 232 DPRINTF("%s: status %x\n", __func__, ret); 233 /* Toggle bit 6 */ 234 pfl->status ^= 0x40; 235 break; 236 case 0x98: 237 /* CFI query mode */ 238 if (boff > pfl->cfi_len) 239 ret = 0; 240 else 241 ret = pfl->cfi_table[boff]; 242 break; 243 } 244 245 return ret; 246 } 247 248 /* update flash content on disk */ 249 static void pflash_update(pflash_t *pfl, int offset, 250 int size) 251 { 252 int offset_end; 253 if (pfl->blk) { 254 offset_end = offset + size; 255 /* widen to sector boundaries */ 256 offset = QEMU_ALIGN_DOWN(offset, BDRV_SECTOR_SIZE); 257 offset_end = QEMU_ALIGN_UP(offset_end, BDRV_SECTOR_SIZE); 258 blk_pwrite(pfl->blk, offset, pfl->storage + offset, 259 offset_end - offset, 0); 260 } 261 } 262 263 static void pflash_write (pflash_t *pfl, hwaddr offset, 264 uint32_t value, int width, int be) 265 { 266 hwaddr boff; 267 uint8_t *p; 268 uint8_t cmd; 269 270 cmd = value; 271 if (pfl->cmd != 0xA0 && cmd == 0xF0) { 272 #if 0 273 DPRINTF("%s: flash reset asked (%02x %02x)\n", 274 __func__, pfl->cmd, cmd); 275 #endif 276 goto reset_flash; 277 } 278 DPRINTF("%s: offset " TARGET_FMT_plx " %08x %d %d\n", __func__, 279 offset, value, width, pfl->wcycle); 280 offset &= pfl->chip_len - 1; 281 282 DPRINTF("%s: offset " TARGET_FMT_plx " %08x %d\n", __func__, 283 offset, value, width); 284 boff = offset & (pfl->sector_len - 1); 285 if (pfl->width == 2) 286 boff = boff >> 1; 287 else if (pfl->width == 4) 288 boff = boff >> 2; 289 switch (pfl->wcycle) { 290 case 0: 291 /* Set the device in I/O access mode if required */ 292 if (pfl->rom_mode) 293 pflash_register_memory(pfl, 0); 294 pfl->read_counter = 0; 295 /* We're in read mode */ 296 check_unlock0: 297 if (boff == 0x55 && cmd == 0x98) { 298 enter_CFI_mode: 299 /* Enter CFI query mode */ 300 pfl->wcycle = 7; 301 pfl->cmd = 0x98; 302 return; 303 } 304 if (boff != pfl->unlock_addr0 || cmd != 0xAA) { 305 DPRINTF("%s: unlock0 failed " TARGET_FMT_plx " %02x %04x\n", 306 __func__, boff, cmd, pfl->unlock_addr0); 307 goto reset_flash; 308 } 309 DPRINTF("%s: unlock sequence started\n", __func__); 310 break; 311 case 1: 312 /* We started an unlock sequence */ 313 check_unlock1: 314 if (boff != pfl->unlock_addr1 || cmd != 0x55) { 315 DPRINTF("%s: unlock1 failed " TARGET_FMT_plx " %02x\n", __func__, 316 boff, cmd); 317 goto reset_flash; 318 } 319 DPRINTF("%s: unlock sequence done\n", __func__); 320 break; 321 case 2: 322 /* We finished an unlock sequence */ 323 if (!pfl->bypass && boff != pfl->unlock_addr0) { 324 DPRINTF("%s: command failed " TARGET_FMT_plx " %02x\n", __func__, 325 boff, cmd); 326 goto reset_flash; 327 } 328 switch (cmd) { 329 case 0x20: 330 pfl->bypass = 1; 331 goto do_bypass; 332 case 0x80: 333 case 0x90: 334 case 0xA0: 335 pfl->cmd = cmd; 336 DPRINTF("%s: starting command %02x\n", __func__, cmd); 337 break; 338 default: 339 DPRINTF("%s: unknown command %02x\n", __func__, cmd); 340 goto reset_flash; 341 } 342 break; 343 case 3: 344 switch (pfl->cmd) { 345 case 0x80: 346 /* We need another unlock sequence */ 347 goto check_unlock0; 348 case 0xA0: 349 DPRINTF("%s: write data offset " TARGET_FMT_plx " %08x %d\n", 350 __func__, offset, value, width); 351 p = pfl->storage; 352 if (!pfl->ro) { 353 switch (width) { 354 case 1: 355 p[offset] &= value; 356 pflash_update(pfl, offset, 1); 357 break; 358 case 2: 359 if (be) { 360 p[offset] &= value >> 8; 361 p[offset + 1] &= value; 362 } else { 363 p[offset] &= value; 364 p[offset + 1] &= value >> 8; 365 } 366 pflash_update(pfl, offset, 2); 367 break; 368 case 4: 369 if (be) { 370 p[offset] &= value >> 24; 371 p[offset + 1] &= value >> 16; 372 p[offset + 2] &= value >> 8; 373 p[offset + 3] &= value; 374 } else { 375 p[offset] &= value; 376 p[offset + 1] &= value >> 8; 377 p[offset + 2] &= value >> 16; 378 p[offset + 3] &= value >> 24; 379 } 380 pflash_update(pfl, offset, 4); 381 break; 382 } 383 } 384 pfl->status = 0x00 | ~(value & 0x80); 385 /* Let's pretend write is immediate */ 386 if (pfl->bypass) 387 goto do_bypass; 388 goto reset_flash; 389 case 0x90: 390 if (pfl->bypass && cmd == 0x00) { 391 /* Unlock bypass reset */ 392 goto reset_flash; 393 } 394 /* We can enter CFI query mode from autoselect mode */ 395 if (boff == 0x55 && cmd == 0x98) 396 goto enter_CFI_mode; 397 /* No break here */ 398 default: 399 DPRINTF("%s: invalid write for command %02x\n", 400 __func__, pfl->cmd); 401 goto reset_flash; 402 } 403 case 4: 404 switch (pfl->cmd) { 405 case 0xA0: 406 /* Ignore writes while flash data write is occurring */ 407 /* As we suppose write is immediate, this should never happen */ 408 return; 409 case 0x80: 410 goto check_unlock1; 411 default: 412 /* Should never happen */ 413 DPRINTF("%s: invalid command state %02x (wc 4)\n", 414 __func__, pfl->cmd); 415 goto reset_flash; 416 } 417 break; 418 case 5: 419 switch (cmd) { 420 case 0x10: 421 if (boff != pfl->unlock_addr0) { 422 DPRINTF("%s: chip erase: invalid address " TARGET_FMT_plx "\n", 423 __func__, offset); 424 goto reset_flash; 425 } 426 /* Chip erase */ 427 DPRINTF("%s: start chip erase\n", __func__); 428 if (!pfl->ro) { 429 memset(pfl->storage, 0xFF, pfl->chip_len); 430 pflash_update(pfl, 0, pfl->chip_len); 431 } 432 pfl->status = 0x00; 433 /* Let's wait 5 seconds before chip erase is done */ 434 timer_mod(pfl->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 435 (NANOSECONDS_PER_SECOND * 5)); 436 break; 437 case 0x30: 438 /* Sector erase */ 439 p = pfl->storage; 440 offset &= ~(pfl->sector_len - 1); 441 DPRINTF("%s: start sector erase at " TARGET_FMT_plx "\n", __func__, 442 offset); 443 if (!pfl->ro) { 444 memset(p + offset, 0xFF, pfl->sector_len); 445 pflash_update(pfl, offset, pfl->sector_len); 446 } 447 pfl->status = 0x00; 448 /* Let's wait 1/2 second before sector erase is done */ 449 timer_mod(pfl->timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 450 (NANOSECONDS_PER_SECOND / 2)); 451 break; 452 default: 453 DPRINTF("%s: invalid command %02x (wc 5)\n", __func__, cmd); 454 goto reset_flash; 455 } 456 pfl->cmd = cmd; 457 break; 458 case 6: 459 switch (pfl->cmd) { 460 case 0x10: 461 /* Ignore writes during chip erase */ 462 return; 463 case 0x30: 464 /* Ignore writes during sector erase */ 465 return; 466 default: 467 /* Should never happen */ 468 DPRINTF("%s: invalid command state %02x (wc 6)\n", 469 __func__, pfl->cmd); 470 goto reset_flash; 471 } 472 break; 473 case 7: /* Special value for CFI queries */ 474 DPRINTF("%s: invalid write in CFI query mode\n", __func__); 475 goto reset_flash; 476 default: 477 /* Should never happen */ 478 DPRINTF("%s: invalid write state (wc 7)\n", __func__); 479 goto reset_flash; 480 } 481 pfl->wcycle++; 482 483 return; 484 485 /* Reset flash */ 486 reset_flash: 487 pfl->bypass = 0; 488 pfl->wcycle = 0; 489 pfl->cmd = 0; 490 return; 491 492 do_bypass: 493 pfl->wcycle = 2; 494 pfl->cmd = 0; 495 } 496 497 498 static uint32_t pflash_readb_be(void *opaque, hwaddr addr) 499 { 500 return pflash_read(opaque, addr, 1, 1); 501 } 502 503 static uint32_t pflash_readb_le(void *opaque, hwaddr addr) 504 { 505 return pflash_read(opaque, addr, 1, 0); 506 } 507 508 static uint32_t pflash_readw_be(void *opaque, hwaddr addr) 509 { 510 pflash_t *pfl = opaque; 511 512 return pflash_read(pfl, addr, 2, 1); 513 } 514 515 static uint32_t pflash_readw_le(void *opaque, hwaddr addr) 516 { 517 pflash_t *pfl = opaque; 518 519 return pflash_read(pfl, addr, 2, 0); 520 } 521 522 static uint32_t pflash_readl_be(void *opaque, hwaddr addr) 523 { 524 pflash_t *pfl = opaque; 525 526 return pflash_read(pfl, addr, 4, 1); 527 } 528 529 static uint32_t pflash_readl_le(void *opaque, hwaddr addr) 530 { 531 pflash_t *pfl = opaque; 532 533 return pflash_read(pfl, addr, 4, 0); 534 } 535 536 static void pflash_writeb_be(void *opaque, hwaddr addr, 537 uint32_t value) 538 { 539 pflash_write(opaque, addr, value, 1, 1); 540 } 541 542 static void pflash_writeb_le(void *opaque, hwaddr addr, 543 uint32_t value) 544 { 545 pflash_write(opaque, addr, value, 1, 0); 546 } 547 548 static void pflash_writew_be(void *opaque, hwaddr addr, 549 uint32_t value) 550 { 551 pflash_t *pfl = opaque; 552 553 pflash_write(pfl, addr, value, 2, 1); 554 } 555 556 static void pflash_writew_le(void *opaque, hwaddr addr, 557 uint32_t value) 558 { 559 pflash_t *pfl = opaque; 560 561 pflash_write(pfl, addr, value, 2, 0); 562 } 563 564 static void pflash_writel_be(void *opaque, hwaddr addr, 565 uint32_t value) 566 { 567 pflash_t *pfl = opaque; 568 569 pflash_write(pfl, addr, value, 4, 1); 570 } 571 572 static void pflash_writel_le(void *opaque, hwaddr addr, 573 uint32_t value) 574 { 575 pflash_t *pfl = opaque; 576 577 pflash_write(pfl, addr, value, 4, 0); 578 } 579 580 static const MemoryRegionOps pflash_cfi02_ops_be = { 581 .old_mmio = { 582 .read = { pflash_readb_be, pflash_readw_be, pflash_readl_be, }, 583 .write = { pflash_writeb_be, pflash_writew_be, pflash_writel_be, }, 584 }, 585 .endianness = DEVICE_NATIVE_ENDIAN, 586 }; 587 588 static const MemoryRegionOps pflash_cfi02_ops_le = { 589 .old_mmio = { 590 .read = { pflash_readb_le, pflash_readw_le, pflash_readl_le, }, 591 .write = { pflash_writeb_le, pflash_writew_le, pflash_writel_le, }, 592 }, 593 .endianness = DEVICE_NATIVE_ENDIAN, 594 }; 595 596 static void pflash_cfi02_realize(DeviceState *dev, Error **errp) 597 { 598 pflash_t *pfl = CFI_PFLASH02(dev); 599 uint32_t chip_len; 600 int ret; 601 Error *local_err = NULL; 602 603 if (pfl->sector_len == 0) { 604 error_setg(errp, "attribute \"sector-length\" not specified or zero."); 605 return; 606 } 607 if (pfl->nb_blocs == 0) { 608 error_setg(errp, "attribute \"num-blocks\" not specified or zero."); 609 return; 610 } 611 if (pfl->name == NULL) { 612 error_setg(errp, "attribute \"name\" not specified."); 613 return; 614 } 615 616 chip_len = pfl->sector_len * pfl->nb_blocs; 617 /* XXX: to be fixed */ 618 #if 0 619 if (total_len != (8 * 1024 * 1024) && total_len != (16 * 1024 * 1024) && 620 total_len != (32 * 1024 * 1024) && total_len != (64 * 1024 * 1024)) 621 return NULL; 622 #endif 623 624 memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl), pfl->be ? 625 &pflash_cfi02_ops_be : &pflash_cfi02_ops_le, 626 pfl, pfl->name, chip_len, &local_err); 627 if (local_err) { 628 error_propagate(errp, local_err); 629 return; 630 } 631 632 pfl->storage = memory_region_get_ram_ptr(&pfl->orig_mem); 633 pfl->chip_len = chip_len; 634 635 if (pfl->blk) { 636 uint64_t perm; 637 pfl->ro = blk_is_read_only(pfl->blk); 638 perm = BLK_PERM_CONSISTENT_READ | (pfl->ro ? 0 : BLK_PERM_WRITE); 639 ret = blk_set_perm(pfl->blk, perm, BLK_PERM_ALL, errp); 640 if (ret < 0) { 641 return; 642 } 643 } else { 644 pfl->ro = 0; 645 } 646 647 if (pfl->blk) { 648 /* read the initial flash content */ 649 ret = blk_pread(pfl->blk, 0, pfl->storage, chip_len); 650 if (ret < 0) { 651 vmstate_unregister_ram(&pfl->orig_mem, DEVICE(pfl)); 652 error_setg(errp, "failed to read the initial flash content"); 653 return; 654 } 655 } 656 657 pflash_setup_mappings(pfl); 658 pfl->rom_mode = 1; 659 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem); 660 661 pfl->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, pflash_timer, pfl); 662 pfl->wcycle = 0; 663 pfl->cmd = 0; 664 pfl->status = 0; 665 /* Hardcoded CFI table (mostly from SG29 Spansion flash) */ 666 pfl->cfi_len = 0x52; 667 /* Standard "QRY" string */ 668 pfl->cfi_table[0x10] = 'Q'; 669 pfl->cfi_table[0x11] = 'R'; 670 pfl->cfi_table[0x12] = 'Y'; 671 /* Command set (AMD/Fujitsu) */ 672 pfl->cfi_table[0x13] = 0x02; 673 pfl->cfi_table[0x14] = 0x00; 674 /* Primary extended table address */ 675 pfl->cfi_table[0x15] = 0x31; 676 pfl->cfi_table[0x16] = 0x00; 677 /* Alternate command set (none) */ 678 pfl->cfi_table[0x17] = 0x00; 679 pfl->cfi_table[0x18] = 0x00; 680 /* Alternate extended table (none) */ 681 pfl->cfi_table[0x19] = 0x00; 682 pfl->cfi_table[0x1A] = 0x00; 683 /* Vcc min */ 684 pfl->cfi_table[0x1B] = 0x27; 685 /* Vcc max */ 686 pfl->cfi_table[0x1C] = 0x36; 687 /* Vpp min (no Vpp pin) */ 688 pfl->cfi_table[0x1D] = 0x00; 689 /* Vpp max (no Vpp pin) */ 690 pfl->cfi_table[0x1E] = 0x00; 691 /* Reserved */ 692 pfl->cfi_table[0x1F] = 0x07; 693 /* Timeout for min size buffer write (NA) */ 694 pfl->cfi_table[0x20] = 0x00; 695 /* Typical timeout for block erase (512 ms) */ 696 pfl->cfi_table[0x21] = 0x09; 697 /* Typical timeout for full chip erase (4096 ms) */ 698 pfl->cfi_table[0x22] = 0x0C; 699 /* Reserved */ 700 pfl->cfi_table[0x23] = 0x01; 701 /* Max timeout for buffer write (NA) */ 702 pfl->cfi_table[0x24] = 0x00; 703 /* Max timeout for block erase */ 704 pfl->cfi_table[0x25] = 0x0A; 705 /* Max timeout for chip erase */ 706 pfl->cfi_table[0x26] = 0x0D; 707 /* Device size */ 708 pfl->cfi_table[0x27] = ctz32(chip_len); 709 /* Flash device interface (8 & 16 bits) */ 710 pfl->cfi_table[0x28] = 0x02; 711 pfl->cfi_table[0x29] = 0x00; 712 /* Max number of bytes in multi-bytes write */ 713 /* XXX: disable buffered write as it's not supported */ 714 // pfl->cfi_table[0x2A] = 0x05; 715 pfl->cfi_table[0x2A] = 0x00; 716 pfl->cfi_table[0x2B] = 0x00; 717 /* Number of erase block regions (uniform) */ 718 pfl->cfi_table[0x2C] = 0x01; 719 /* Erase block region 1 */ 720 pfl->cfi_table[0x2D] = pfl->nb_blocs - 1; 721 pfl->cfi_table[0x2E] = (pfl->nb_blocs - 1) >> 8; 722 pfl->cfi_table[0x2F] = pfl->sector_len >> 8; 723 pfl->cfi_table[0x30] = pfl->sector_len >> 16; 724 725 /* Extended */ 726 pfl->cfi_table[0x31] = 'P'; 727 pfl->cfi_table[0x32] = 'R'; 728 pfl->cfi_table[0x33] = 'I'; 729 730 pfl->cfi_table[0x34] = '1'; 731 pfl->cfi_table[0x35] = '0'; 732 733 pfl->cfi_table[0x36] = 0x00; 734 pfl->cfi_table[0x37] = 0x00; 735 pfl->cfi_table[0x38] = 0x00; 736 pfl->cfi_table[0x39] = 0x00; 737 738 pfl->cfi_table[0x3a] = 0x00; 739 740 pfl->cfi_table[0x3b] = 0x00; 741 pfl->cfi_table[0x3c] = 0x00; 742 } 743 744 static Property pflash_cfi02_properties[] = { 745 DEFINE_PROP_DRIVE("drive", struct pflash_t, blk), 746 DEFINE_PROP_UINT32("num-blocks", struct pflash_t, nb_blocs, 0), 747 DEFINE_PROP_UINT32("sector-length", struct pflash_t, sector_len, 0), 748 DEFINE_PROP_UINT8("width", struct pflash_t, width, 0), 749 DEFINE_PROP_UINT8("mappings", struct pflash_t, mappings, 0), 750 DEFINE_PROP_UINT8("big-endian", struct pflash_t, be, 0), 751 DEFINE_PROP_UINT16("id0", struct pflash_t, ident0, 0), 752 DEFINE_PROP_UINT16("id1", struct pflash_t, ident1, 0), 753 DEFINE_PROP_UINT16("id2", struct pflash_t, ident2, 0), 754 DEFINE_PROP_UINT16("id3", struct pflash_t, ident3, 0), 755 DEFINE_PROP_UINT16("unlock-addr0", struct pflash_t, unlock_addr0, 0), 756 DEFINE_PROP_UINT16("unlock-addr1", struct pflash_t, unlock_addr1, 0), 757 DEFINE_PROP_STRING("name", struct pflash_t, name), 758 DEFINE_PROP_END_OF_LIST(), 759 }; 760 761 static void pflash_cfi02_class_init(ObjectClass *klass, void *data) 762 { 763 DeviceClass *dc = DEVICE_CLASS(klass); 764 765 dc->realize = pflash_cfi02_realize; 766 dc->props = pflash_cfi02_properties; 767 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 768 } 769 770 static const TypeInfo pflash_cfi02_info = { 771 .name = TYPE_CFI_PFLASH02, 772 .parent = TYPE_SYS_BUS_DEVICE, 773 .instance_size = sizeof(struct pflash_t), 774 .class_init = pflash_cfi02_class_init, 775 }; 776 777 static void pflash_cfi02_register_types(void) 778 { 779 type_register_static(&pflash_cfi02_info); 780 } 781 782 type_init(pflash_cfi02_register_types) 783 784 pflash_t *pflash_cfi02_register(hwaddr base, 785 DeviceState *qdev, const char *name, 786 hwaddr size, 787 BlockBackend *blk, uint32_t sector_len, 788 int nb_blocs, int nb_mappings, int width, 789 uint16_t id0, uint16_t id1, 790 uint16_t id2, uint16_t id3, 791 uint16_t unlock_addr0, uint16_t unlock_addr1, 792 int be) 793 { 794 DeviceState *dev = qdev_create(NULL, TYPE_CFI_PFLASH02); 795 796 if (blk) { 797 qdev_prop_set_drive(dev, "drive", blk, &error_abort); 798 } 799 qdev_prop_set_uint32(dev, "num-blocks", nb_blocs); 800 qdev_prop_set_uint32(dev, "sector-length", sector_len); 801 qdev_prop_set_uint8(dev, "width", width); 802 qdev_prop_set_uint8(dev, "mappings", nb_mappings); 803 qdev_prop_set_uint8(dev, "big-endian", !!be); 804 qdev_prop_set_uint16(dev, "id0", id0); 805 qdev_prop_set_uint16(dev, "id1", id1); 806 qdev_prop_set_uint16(dev, "id2", id2); 807 qdev_prop_set_uint16(dev, "id3", id3); 808 qdev_prop_set_uint16(dev, "unlock-addr0", unlock_addr0); 809 qdev_prop_set_uint16(dev, "unlock-addr1", unlock_addr1); 810 qdev_prop_set_string(dev, "name", name); 811 qdev_init_nofail(dev); 812 813 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); 814 return CFI_PFLASH02(dev); 815 } 816