hw/pflash_cfi01.c

   1 /*
   2  *  CFI parallel flash with Intel command set emulation
   3  *
   4  *  Copyright (c) 2006 Thorsten Zitterell
   5  *  Copyright (c) 2005 Jocelyn Mayer
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /*
  22  * For now, this code can emulate flashes of 1, 2 or 4 bytes width.
  23  * Supported commands/modes are:
  24  * - flash read
  25  * - flash write
  26  * - flash ID read
  27  * - sector erase
  28  * - CFI queries
  29  *
  30  * It does not support timings
  31  * It does not support flash interleaving
  32  * It does not implement software data protection as found in many real chips
  33  * It does not implement erase suspend/resume commands
  34  * It does not implement multiple sectors erase
  35  *
  36  * It does not implement much more ...
  37  */
  38
  39 #include "hw.h"
  40 #include "flash.h"
  41 #include "block/block.h"
  42 #include "qemu/timer.h"
  43 #include "exec/address-spaces.h"
  44 #include "qemu/host-utils.h"
  45 #include "sysbus.h"
  46
  47 #define PFLASH_BUG(fmt, ...) \
  48 do { \
  49     fprintf(stderr, "PFLASH: Possible BUG - " fmt, ## __VA_ARGS__); \
  50     exit(1); \
  51 } while(0)
  52
  53 /* #define PFLASH_DEBUG */
  54 #ifdef PFLASH_DEBUG
  55 #define DPRINTF(fmt, ...)                                   \
  56 do {                                                        \
  57     fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__);       \
  58 } while (0)
  59 #else
  60 #define DPRINTF(fmt, ...) do { } while (0)
  61 #endif
  62
  63 struct pflash_t {
  64     SysBusDevice busdev;
  65     BlockDriverState *bs;
  66     uint32_t nb_blocs;
  67     uint64_t sector_len;
  68     uint8_t width;
  69     uint8_t be;
  70     int wcycle; /* if 0, the flash is read normally */
  71     int bypass;
  72     int ro;
  73     uint8_t cmd;
  74     uint8_t status;
  75     uint16_t ident0;
  76     uint16_t ident1;
  77     uint16_t ident2;
  78     uint16_t ident3;
  79     uint8_t cfi_len;
  80     uint8_t cfi_table[0x52];
  81     hwaddr counter;
  82     unsigned int writeblock_size;
  83     QEMUTimer *timer;
  84     MemoryRegion mem;
  85     char *name;
  86     void *storage;
  87 };
  88
  89 static void pflash_timer (void *opaque)
  90 {
  91     pflash_t *pfl = opaque;
  92
  93     DPRINTF("%s: command %02x done\n", __func__, pfl->cmd);
  94     /* Reset flash */
  95     pfl->status ^= 0x80;
  96     if (pfl->bypass) {
  97         pfl->wcycle = 2;
  98     } else {
  99         memory_region_rom_device_set_readable(&pfl->mem, true);
 100         pfl->wcycle = 0;
 101     }
 102     pfl->cmd = 0;
 103 }
 104
 105 static uint32_t pflash_read (pflash_t *pfl, hwaddr offset,
 106                              int width, int be)
 107 {
 108     hwaddr boff;
 109     uint32_t ret;
 110     uint8_t *p;
 111
 112     ret = -1;
 113     boff = offset & 0xFF; /* why this here ?? */
 114
 115     if (pfl->width == 2)
 116         boff = boff >> 1;
 117     else if (pfl->width == 4)
 118         boff = boff >> 2;
 119
 120 #if 0
 121     DPRINTF("%s: reading offset " TARGET_FMT_plx " under cmd %02x width %d\n",
 122             __func__, offset, pfl->cmd, width);
 123 #endif
 124     switch (pfl->cmd) {
 125     case 0x00:
 126         /* Flash area read */
 127         p = pfl->storage;
 128         switch (width) {
 129         case 1:
 130             ret = p[offset];
 131             DPRINTF("%s: data offset " TARGET_FMT_plx " %02x\n",
 132                     __func__, offset, ret);
 133             break;
 134         case 2:
 135             if (be) {
 136                 ret = p[offset] << 8;
 137                 ret |= p[offset + 1];
 138             } else {
 139                 ret = p[offset];
 140                 ret |= p[offset + 1] << 8;
 141             }
 142             DPRINTF("%s: data offset " TARGET_FMT_plx " %04x\n",
 143                     __func__, offset, ret);
 144             break;
 145         case 4:
 146             if (be) {
 147                 ret = p[offset] << 24;
 148                 ret |= p[offset + 1] << 16;
 149                 ret |= p[offset + 2] << 8;
 150                 ret |= p[offset + 3];
 151             } else {
 152                 ret = p[offset];
 153                 ret |= p[offset + 1] << 8;
 154                 ret |= p[offset + 2] << 16;
 155                 ret |= p[offset + 3] << 24;
 156             }
 157             DPRINTF("%s: data offset " TARGET_FMT_plx " %08x\n",
 158                     __func__, offset, ret);
 159             break;
 160         default:
 161             DPRINTF("BUG in %s\n", __func__);
 162         }
 163
 164         break;
 165     case 0x20: /* Block erase */
 166     case 0x50: /* Clear status register */
 167     case 0x60: /* Block /un)lock */
 168     case 0x70: /* Status Register */
 169     case 0xe8: /* Write block */
 170         /* Status register read */
 171         ret = pfl->status;
 172         DPRINTF("%s: status %x\n", __func__, ret);
 173         break;
 174     case 0x90:
 175         switch (boff) {
 176         case 0:
 177             ret = pfl->ident0 << 8 | pfl->ident1;
 178             DPRINTF("%s: Manufacturer Code %04x\n", __func__, ret);
 179             break;
 180         case 1:
 181             ret = pfl->ident2 << 8 | pfl->ident3;
 182             DPRINTF("%s: Device ID Code %04x\n", __func__, ret);
 183             break;
 184         default:
 185             DPRINTF("%s: Read Device Information boff=%x\n", __func__,
 186                     (unsigned)boff);
 187             ret = 0;
 188             break;
 189         }
 190         break;
 191     case 0x98: /* Query mode */
 192         if (boff > pfl->cfi_len)
 193             ret = 0;
 194         else
 195             ret = pfl->cfi_table[boff];
 196         break;
 197     default:
 198         /* This should never happen : reset state & treat it as a read */
 199         DPRINTF("%s: unknown command state: %x\n", __func__, pfl->cmd);
 200         pfl->wcycle = 0;
 201         pfl->cmd = 0;
 202     }
 203     return ret;
 204 }
 205
 206 /* update flash content on disk */
 207 static void pflash_update(pflash_t *pfl, int offset,
 208                           int size)
 209 {
 210     int offset_end;
 211     if (pfl->bs) {
 212         offset_end = offset + size;
 213         /* round to sectors */
 214         offset = offset >> 9;
 215         offset_end = (offset_end + 511) >> 9;
 216         bdrv_write(pfl->bs, offset, pfl->storage + (offset << 9),
 217                    offset_end - offset);
 218     }
 219 }
 220
 221 static inline void pflash_data_write(pflash_t *pfl, hwaddr offset,
 222                                      uint32_t value, int width, int be)
 223 {
 224     uint8_t *p = pfl->storage;
 225
 226     DPRINTF("%s: block write offset " TARGET_FMT_plx
 227             " value %x counter " TARGET_FMT_plx "\n",
 228             __func__, offset, value, pfl->counter);
 229     switch (width) {
 230     case 1:
 231         p[offset] = value;
 232         break;
 233     case 2:
 234         if (be) {
 235             p[offset] = value >> 8;
 236             p[offset + 1] = value;
 237         } else {
 238             p[offset] = value;
 239             p[offset + 1] = value >> 8;
 240         }
 241         break;
 242     case 4:
 243         if (be) {
 244             p[offset] = value >> 24;
 245             p[offset + 1] = value >> 16;
 246             p[offset + 2] = value >> 8;
 247             p[offset + 3] = value;
 248         } else {
 249             p[offset] = value;
 250             p[offset + 1] = value >> 8;
 251             p[offset + 2] = value >> 16;
 252             p[offset + 3] = value >> 24;
 253         }
 254         break;
 255     }
 256
 257 }
 258
 259 static void pflash_write(pflash_t *pfl, hwaddr offset,
 260                          uint32_t value, int width, int be)
 261 {
 262     uint8_t *p;
 263     uint8_t cmd;
 264
 265     cmd = value;
 266
 267     DPRINTF("%s: writing offset " TARGET_FMT_plx " value %08x width %d wcycle 0x%x\n",
 268             __func__, offset, value, width, pfl->wcycle);
 269
 270     if (!pfl->wcycle) {
 271         /* Set the device in I/O access mode */
 272         memory_region_rom_device_set_readable(&pfl->mem, false);
 273     }
 274
 275     switch (pfl->wcycle) {
 276     case 0:
 277         /* read mode */
 278         switch (cmd) {
 279         case 0x00: /* ??? */
 280             goto reset_flash;
 281         case 0x10: /* Single Byte Program */
 282         case 0x40: /* Single Byte Program */
 283             DPRINTF("%s: Single Byte Program\n", __func__);
 284             break;
 285         case 0x20: /* Block erase */
 286             p = pfl->storage;
 287             offset &= ~(pfl->sector_len - 1);
 288
 289             DPRINTF("%s: block erase at " TARGET_FMT_plx " bytes %x\n",
 290                     __func__, offset, (unsigned)pfl->sector_len);
 291
 292             if (!pfl->ro) {
 293                 memset(p + offset, 0xff, pfl->sector_len);
 294                 pflash_update(pfl, offset, pfl->sector_len);
 295             } else {
 296                 pfl->status |= 0x20; /* Block erase error */
 297             }
 298             pfl->status |= 0x80; /* Ready! */
 299             break;
 300         case 0x50: /* Clear status bits */
 301             DPRINTF("%s: Clear status bits\n", __func__);
 302             pfl->status = 0x0;
 303             goto reset_flash;
 304         case 0x60: /* Block (un)lock */
 305             DPRINTF("%s: Block unlock\n", __func__);
 306             break;
 307         case 0x70: /* Status Register */
 308             DPRINTF("%s: Read status register\n", __func__);
 309             pfl->cmd = cmd;
 310             return;
 311         case 0x90: /* Read Device ID */
 312             DPRINTF("%s: Read Device information\n", __func__);
 313             pfl->cmd = cmd;
 314             return;
 315         case 0x98: /* CFI query */
 316             DPRINTF("%s: CFI query\n", __func__);
 317             break;
 318         case 0xe8: /* Write to buffer */
 319             DPRINTF("%s: Write to buffer\n", __func__);
 320             pfl->status |= 0x80; /* Ready! */
 321             break;
 322         case 0xf0: /* Probe for AMD flash */
 323             DPRINTF("%s: Probe for AMD flash\n", __func__);
 324             goto reset_flash;
 325         case 0xff: /* Read array mode */
 326             DPRINTF("%s: Read array mode\n", __func__);
 327             goto reset_flash;
 328         default:
 329             goto error_flash;
 330         }
 331         pfl->wcycle++;
 332         pfl->cmd = cmd;
 333         break;
 334     case 1:
 335         switch (pfl->cmd) {
 336         case 0x10: /* Single Byte Program */
 337         case 0x40: /* Single Byte Program */
 338             DPRINTF("%s: Single Byte Program\n", __func__);
 339             if (!pfl->ro) {
 340                 pflash_data_write(pfl, offset, value, width, be);
 341                 pflash_update(pfl, offset, width);
 342             } else {
 343                 pfl->status |= 0x10; /* Programming error */
 344             }
 345             pfl->status |= 0x80; /* Ready! */
 346             pfl->wcycle = 0;
 347         break;
 348         case 0x20: /* Block erase */
 349         case 0x28:
 350             if (cmd == 0xd0) { /* confirm */
 351                 pfl->wcycle = 0;
 352                 pfl->status |= 0x80;
 353             } else if (cmd == 0xff) { /* read array mode */
 354                 goto reset_flash;
 355             } else
 356                 goto error_flash;
 357
 358             break;
 359         case 0xe8:
 360             DPRINTF("%s: block write of %x bytes\n", __func__, value);
 361             pfl->counter = value;
 362             pfl->wcycle++;
 363             break;
 364         case 0x60:
 365             if (cmd == 0xd0) {
 366                 pfl->wcycle = 0;
 367                 pfl->status |= 0x80;
 368             } else if (cmd == 0x01) {
 369                 pfl->wcycle = 0;
 370                 pfl->status |= 0x80;
 371             } else if (cmd == 0xff) {
 372                 goto reset_flash;
 373             } else {
 374                 DPRINTF("%s: Unknown (un)locking command\n", __func__);
 375                 goto reset_flash;
 376             }
 377             break;
 378         case 0x98:
 379             if (cmd == 0xff) {
 380                 goto reset_flash;
 381             } else {
 382                 DPRINTF("%s: leaving query mode\n", __func__);
 383             }
 384             break;
 385         default:
 386             goto error_flash;
 387         }
 388         break;
 389     case 2:
 390         switch (pfl->cmd) {
 391         case 0xe8: /* Block write */
 392             if (!pfl->ro) {
 393                 pflash_data_write(pfl, offset, value, width, be);
 394             } else {
 395                 pfl->status |= 0x10; /* Programming error */
 396             }
 397
 398             pfl->status |= 0x80;
 399
 400             if (!pfl->counter) {
 401                 hwaddr mask = pfl->writeblock_size - 1;
 402                 mask = ~mask;
 403
 404                 DPRINTF("%s: block write finished\n", __func__);
 405                 pfl->wcycle++;
 406                 if (!pfl->ro) {
 407                     /* Flush the entire write buffer onto backing storage.  */
 408                     pflash_update(pfl, offset & mask, pfl->writeblock_size);
 409                 } else {
 410                     pfl->status |= 0x10; /* Programming error */
 411                 }
 412             }
 413
 414             pfl->counter--;
 415             break;
 416         default:
 417             goto error_flash;
 418         }
 419         break;
 420     case 3: /* Confirm mode */
 421         switch (pfl->cmd) {
 422         case 0xe8: /* Block write */
 423             if (cmd == 0xd0) {
 424                 pfl->wcycle = 0;
 425                 pfl->status |= 0x80;
 426             } else {
 427                 DPRINTF("%s: unknown command for \"write block\"\n", __func__);
 428                 PFLASH_BUG("Write block confirm");
 429                 goto reset_flash;
 430             }
 431             break;
 432         default:
 433             goto error_flash;
 434         }
 435         break;
 436     default:
 437         /* Should never happen */
 438         DPRINTF("%s: invalid write state\n",  __func__);
 439         goto reset_flash;
 440     }
 441     return;
 442
 443  error_flash:
 444     qemu_log_mask(LOG_UNIMP, "%s: Unimplemented flash cmd sequence "
 445                   "(offset " TARGET_FMT_plx ", wcycle 0x%x cmd 0x%x value 0x%x)"
 446                   "\n", __func__, offset, pfl->wcycle, pfl->cmd, value);
 447
 448  reset_flash:
 449     memory_region_rom_device_set_readable(&pfl->mem, true);
 450
 451     pfl->bypass = 0;
 452     pfl->wcycle = 0;
 453     pfl->cmd = 0;
 454 }
 455
 456
 457 static uint32_t pflash_readb_be(void *opaque, hwaddr addr)
 458 {
 459     return pflash_read(opaque, addr, 1, 1);
 460 }
 461
 462 static uint32_t pflash_readb_le(void *opaque, hwaddr addr)
 463 {
 464     return pflash_read(opaque, addr, 1, 0);
 465 }
 466
 467 static uint32_t pflash_readw_be(void *opaque, hwaddr addr)
 468 {
 469     pflash_t *pfl = opaque;
 470
 471     return pflash_read(pfl, addr, 2, 1);
 472 }
 473
 474 static uint32_t pflash_readw_le(void *opaque, hwaddr addr)
 475 {
 476     pflash_t *pfl = opaque;
 477
 478     return pflash_read(pfl, addr, 2, 0);
 479 }
 480
 481 static uint32_t pflash_readl_be(void *opaque, hwaddr addr)
 482 {
 483     pflash_t *pfl = opaque;
 484
 485     return pflash_read(pfl, addr, 4, 1);
 486 }
 487
 488 static uint32_t pflash_readl_le(void *opaque, hwaddr addr)
 489 {
 490     pflash_t *pfl = opaque;
 491
 492     return pflash_read(pfl, addr, 4, 0);
 493 }
 494
 495 static void pflash_writeb_be(void *opaque, hwaddr addr,
 496                              uint32_t value)
 497 {
 498     pflash_write(opaque, addr, value, 1, 1);
 499 }
 500
 501 static void pflash_writeb_le(void *opaque, hwaddr addr,
 502                              uint32_t value)
 503 {
 504     pflash_write(opaque, addr, value, 1, 0);
 505 }
 506
 507 static void pflash_writew_be(void *opaque, hwaddr addr,
 508                              uint32_t value)
 509 {
 510     pflash_t *pfl = opaque;
 511
 512     pflash_write(pfl, addr, value, 2, 1);
 513 }
 514
 515 static void pflash_writew_le(void *opaque, hwaddr addr,
 516                              uint32_t value)
 517 {
 518     pflash_t *pfl = opaque;
 519
 520     pflash_write(pfl, addr, value, 2, 0);
 521 }
 522
 523 static void pflash_writel_be(void *opaque, hwaddr addr,
 524                              uint32_t value)
 525 {
 526     pflash_t *pfl = opaque;
 527
 528     pflash_write(pfl, addr, value, 4, 1);
 529 }
 530
 531 static void pflash_writel_le(void *opaque, hwaddr addr,
 532                              uint32_t value)
 533 {
 534     pflash_t *pfl = opaque;
 535
 536     pflash_write(pfl, addr, value, 4, 0);
 537 }
 538
 539 static const MemoryRegionOps pflash_cfi01_ops_be = {
 540     .old_mmio = {
 541         .read = { pflash_readb_be, pflash_readw_be, pflash_readl_be, },
 542         .write = { pflash_writeb_be, pflash_writew_be, pflash_writel_be, },
 543     },
 544     .endianness = DEVICE_NATIVE_ENDIAN,
 545 };
 546
 547 static const MemoryRegionOps pflash_cfi01_ops_le = {
 548     .old_mmio = {
 549         .read = { pflash_readb_le, pflash_readw_le, pflash_readl_le, },
 550         .write = { pflash_writeb_le, pflash_writew_le, pflash_writel_le, },
 551     },
 552     .endianness = DEVICE_NATIVE_ENDIAN,
 553 };
 554
 555 static int pflash_cfi01_init(SysBusDevice *dev)
 556 {
 557     pflash_t *pfl = FROM_SYSBUS(typeof(*pfl), dev);
 558     uint64_t total_len;
 559     int ret;
 560
 561     total_len = pfl->sector_len * pfl->nb_blocs;
 562
 563     /* XXX: to be fixed */
 564 #if 0
 565     if (total_len != (8 * 1024 * 1024) && total_len != (16 * 1024 * 1024) &&
 566         total_len != (32 * 1024 * 1024) && total_len != (64 * 1024 * 1024))
 567         return NULL;
 568 #endif
 569
 570     memory_region_init_rom_device(
 571         &pfl->mem, pfl->be ? &pflash_cfi01_ops_be : &pflash_cfi01_ops_le, pfl,
 572         pfl->name, total_len);
 573     vmstate_register_ram(&pfl->mem, DEVICE(pfl));
 574     pfl->storage = memory_region_get_ram_ptr(&pfl->mem);
 575     sysbus_init_mmio(dev, &pfl->mem);
 576
 577     if (pfl->bs) {
 578         /* read the initial flash content */
 579         ret = bdrv_read(pfl->bs, 0, pfl->storage, total_len >> 9);
 580
 581         if (ret < 0) {
 582             vmstate_unregister_ram(&pfl->mem, DEVICE(pfl));
 583             memory_region_destroy(&pfl->mem);
 584             return 1;
 585         }
 586     }
 587
 588     if (pfl->bs) {
 589         pfl->ro = bdrv_is_read_only(pfl->bs);
 590     } else {
 591         pfl->ro = 0;
 592     }
 593
 594     pfl->timer = qemu_new_timer_ns(vm_clock, pflash_timer, pfl);
 595     pfl->wcycle = 0;
 596     pfl->cmd = 0;
 597     pfl->status = 0;
 598     /* Hardcoded CFI table */
 599     pfl->cfi_len = 0x52;
 600     /* Standard "QRY" string */
 601     pfl->cfi_table[0x10] = 'Q';
 602     pfl->cfi_table[0x11] = 'R';
 603     pfl->cfi_table[0x12] = 'Y';
 604     /* Command set (Intel) */
 605     pfl->cfi_table[0x13] = 0x01;
 606     pfl->cfi_table[0x14] = 0x00;
 607     /* Primary extended table address (none) */
 608     pfl->cfi_table[0x15] = 0x31;
 609     pfl->cfi_table[0x16] = 0x00;
 610     /* Alternate command set (none) */
 611     pfl->cfi_table[0x17] = 0x00;
 612     pfl->cfi_table[0x18] = 0x00;
 613     /* Alternate extended table (none) */
 614     pfl->cfi_table[0x19] = 0x00;
 615     pfl->cfi_table[0x1A] = 0x00;
 616     /* Vcc min */
 617     pfl->cfi_table[0x1B] = 0x45;
 618     /* Vcc max */
 619     pfl->cfi_table[0x1C] = 0x55;
 620     /* Vpp min (no Vpp pin) */
 621     pfl->cfi_table[0x1D] = 0x00;
 622     /* Vpp max (no Vpp pin) */
 623     pfl->cfi_table[0x1E] = 0x00;
 624     /* Reserved */
 625     pfl->cfi_table[0x1F] = 0x07;
 626     /* Timeout for min size buffer write */
 627     pfl->cfi_table[0x20] = 0x07;
 628     /* Typical timeout for block erase */
 629     pfl->cfi_table[0x21] = 0x0a;
 630     /* Typical timeout for full chip erase (4096 ms) */
 631     pfl->cfi_table[0x22] = 0x00;
 632     /* Reserved */
 633     pfl->cfi_table[0x23] = 0x04;
 634     /* Max timeout for buffer write */
 635     pfl->cfi_table[0x24] = 0x04;
 636     /* Max timeout for block erase */
 637     pfl->cfi_table[0x25] = 0x04;
 638     /* Max timeout for chip erase */
 639     pfl->cfi_table[0x26] = 0x00;
 640     /* Device size */
 641     pfl->cfi_table[0x27] = ctz32(total_len); // + 1;
 642     /* Flash device interface (8 & 16 bits) */
 643     pfl->cfi_table[0x28] = 0x02;
 644     pfl->cfi_table[0x29] = 0x00;
 645     /* Max number of bytes in multi-bytes write */
 646     if (pfl->width == 1) {
 647         pfl->cfi_table[0x2A] = 0x08;
 648     } else {
 649         pfl->cfi_table[0x2A] = 0x0B;
 650     }
 651     pfl->writeblock_size = 1 << pfl->cfi_table[0x2A];
 652
 653     pfl->cfi_table[0x2B] = 0x00;
 654     /* Number of erase block regions (uniform) */
 655     pfl->cfi_table[0x2C] = 0x01;
 656     /* Erase block region 1 */
 657     pfl->cfi_table[0x2D] = pfl->nb_blocs - 1;
 658     pfl->cfi_table[0x2E] = (pfl->nb_blocs - 1) >> 8;
 659     pfl->cfi_table[0x2F] = pfl->sector_len >> 8;
 660     pfl->cfi_table[0x30] = pfl->sector_len >> 16;
 661
 662     /* Extended */
 663     pfl->cfi_table[0x31] = 'P';
 664     pfl->cfi_table[0x32] = 'R';
 665     pfl->cfi_table[0x33] = 'I';
 666
 667     pfl->cfi_table[0x34] = '1';
 668     pfl->cfi_table[0x35] = '0';
 669
 670     pfl->cfi_table[0x36] = 0x00;
 671     pfl->cfi_table[0x37] = 0x00;
 672     pfl->cfi_table[0x38] = 0x00;
 673     pfl->cfi_table[0x39] = 0x00;
 674
 675     pfl->cfi_table[0x3a] = 0x00;
 676
 677     pfl->cfi_table[0x3b] = 0x00;
 678     pfl->cfi_table[0x3c] = 0x00;
 679
 680     pfl->cfi_table[0x3f] = 0x01; /* Number of protection fields */
 681
 682     return 0;
 683 }
 684
 685 static Property pflash_cfi01_properties[] = {
 686     DEFINE_PROP_DRIVE("drive", struct pflash_t, bs),
 687     DEFINE_PROP_UINT32("num-blocks", struct pflash_t, nb_blocs, 0),
 688     DEFINE_PROP_UINT64("sector-length", struct pflash_t, sector_len, 0),
 689     DEFINE_PROP_UINT8("width", struct pflash_t, width, 0),
 690     DEFINE_PROP_UINT8("big-endian", struct pflash_t, be, 0),
 691     DEFINE_PROP_UINT16("id0", struct pflash_t, ident0, 0),
 692     DEFINE_PROP_UINT16("id1", struct pflash_t, ident1, 0),
 693     DEFINE_PROP_UINT16("id2", struct pflash_t, ident2, 0),
 694     DEFINE_PROP_UINT16("id3", struct pflash_t, ident3, 0),
 695     DEFINE_PROP_STRING("name", struct pflash_t, name),
 696     DEFINE_PROP_END_OF_LIST(),
 697 };
 698
 699 static void pflash_cfi01_class_init(ObjectClass *klass, void *data)
 700 {
 701     DeviceClass *dc = DEVICE_CLASS(klass);
 702     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 703
 704     k->init = pflash_cfi01_init;
 705     dc->props = pflash_cfi01_properties;
 706 }
 707
 708
 709 static const TypeInfo pflash_cfi01_info = {
 710     .name           = "cfi.pflash01",
 711     .parent         = TYPE_SYS_BUS_DEVICE,
 712     .instance_size  = sizeof(struct pflash_t),
 713     .class_init     = pflash_cfi01_class_init,
 714 };
 715
 716 static void pflash_cfi01_register_types(void)
 717 {
 718     type_register_static(&pflash_cfi01_info);
 719 }
 720
 721 type_init(pflash_cfi01_register_types)
 722
 723 pflash_t *pflash_cfi01_register(hwaddr base,
 724                                 DeviceState *qdev, const char *name,
 725                                 hwaddr size,
 726                                 BlockDriverState *bs,
 727                                 uint32_t sector_len, int nb_blocs, int width,
 728                                 uint16_t id0, uint16_t id1,
 729                                 uint16_t id2, uint16_t id3, int be)
 730 {
 731     DeviceState *dev = qdev_create(NULL, "cfi.pflash01");
 732     SysBusDevice *busdev = SYS_BUS_DEVICE(dev);
 733     pflash_t *pfl = (pflash_t *)object_dynamic_cast(OBJECT(dev),
 734                                                     "cfi.pflash01");
 735
 736     if (bs && qdev_prop_set_drive(dev, "drive", bs)) {
 737         abort();
 738     }
 739     qdev_prop_set_uint32(dev, "num-blocks", nb_blocs);
 740     qdev_prop_set_uint64(dev, "sector-length", sector_len);
 741     qdev_prop_set_uint8(dev, "width", width);
 742     qdev_prop_set_uint8(dev, "big-endian", !!be);
 743     qdev_prop_set_uint16(dev, "id0", id0);
 744     qdev_prop_set_uint16(dev, "id1", id1);
 745     qdev_prop_set_uint16(dev, "id2", id2);
 746     qdev_prop_set_uint16(dev, "id3", id3);
 747     qdev_prop_set_string(dev, "name", name);
 748     qdev_init_nofail(dev);
 749
 750     sysbus_mmio_map(busdev, 0, base);
 751     return pfl;
 752 }
 753
 754 MemoryRegion *pflash_cfi01_get_memory(pflash_t *fl)
 755 {
 756     return &fl->mem;
 757 }