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.h"
  42 #include "qemu-timer.h"
  43 #include "exec-memory.h"
  44 #include "host-utils.h"
  45 #include "sysbus.h"
  46
  47 #define PFLASH_BUG(fmt, ...) \
  48 do { \
  49     printf("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     printf("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 0xff: /* Read array mode */
 323             DPRINTF("%s: Read array mode\n", __func__);
 324             goto reset_flash;
 325         default:
 326             goto error_flash;
 327         }
 328         pfl->wcycle++;
 329         pfl->cmd = cmd;
 330         break;
 331     case 1:
 332         switch (pfl->cmd) {
 333         case 0x10: /* Single Byte Program */
 334         case 0x40: /* Single Byte Program */
 335             DPRINTF("%s: Single Byte Program\n", __func__);
 336             if (!pfl->ro) {
 337                 pflash_data_write(pfl, offset, value, width, be);
 338                 pflash_update(pfl, offset, width);
 339             } else {
 340                 pfl->status |= 0x10; /* Programming error */
 341             }
 342             pfl->status |= 0x80; /* Ready! */
 343             pfl->wcycle = 0;
 344         break;
 345         case 0x20: /* Block erase */
 346         case 0x28:
 347             if (cmd == 0xd0) { /* confirm */
 348                 pfl->wcycle = 0;
 349                 pfl->status |= 0x80;
 350             } else if (cmd == 0xff) { /* read array mode */
 351                 goto reset_flash;
 352             } else
 353                 goto error_flash;
 354
 355             break;
 356         case 0xe8:
 357             DPRINTF("%s: block write of %x bytes\n", __func__, value);
 358             pfl->counter = value;
 359             pfl->wcycle++;
 360             break;
 361         case 0x60:
 362             if (cmd == 0xd0) {
 363                 pfl->wcycle = 0;
 364                 pfl->status |= 0x80;
 365             } else if (cmd == 0x01) {
 366                 pfl->wcycle = 0;
 367                 pfl->status |= 0x80;
 368             } else if (cmd == 0xff) {
 369                 goto reset_flash;
 370             } else {
 371                 DPRINTF("%s: Unknown (un)locking command\n", __func__);
 372                 goto reset_flash;
 373             }
 374             break;
 375         case 0x98:
 376             if (cmd == 0xff) {
 377                 goto reset_flash;
 378             } else {
 379                 DPRINTF("%s: leaving query mode\n", __func__);
 380             }
 381             break;
 382         default:
 383             goto error_flash;
 384         }
 385         break;
 386     case 2:
 387         switch (pfl->cmd) {
 388         case 0xe8: /* Block write */
 389             if (!pfl->ro) {
 390                 pflash_data_write(pfl, offset, value, width, be);
 391             } else {
 392                 pfl->status |= 0x10; /* Programming error */
 393             }
 394
 395             pfl->status |= 0x80;
 396
 397             if (!pfl->counter) {
 398                 hwaddr mask = pfl->writeblock_size - 1;
 399                 mask = ~mask;
 400
 401                 DPRINTF("%s: block write finished\n", __func__);
 402                 pfl->wcycle++;
 403                 if (!pfl->ro) {
 404                     /* Flush the entire write buffer onto backing storage.  */
 405                     pflash_update(pfl, offset & mask, pfl->writeblock_size);
 406                 } else {
 407                     pfl->status |= 0x10; /* Programming error */
 408                 }
 409             }
 410
 411             pfl->counter--;
 412             break;
 413         default:
 414             goto error_flash;
 415         }
 416         break;
 417     case 3: /* Confirm mode */
 418         switch (pfl->cmd) {
 419         case 0xe8: /* Block write */
 420             if (cmd == 0xd0) {
 421                 pfl->wcycle = 0;
 422                 pfl->status |= 0x80;
 423             } else {
 424                 DPRINTF("%s: unknown command for \"write block\"\n", __func__);
 425                 PFLASH_BUG("Write block confirm");
 426                 goto reset_flash;
 427             }
 428             break;
 429         default:
 430             goto error_flash;
 431         }
 432         break;
 433     default:
 434         /* Should never happen */
 435         DPRINTF("%s: invalid write state\n",  __func__);
 436         goto reset_flash;
 437     }
 438     return;
 439
 440  error_flash:
 441     printf("%s: Unimplemented flash cmd sequence "
 442            "(offset " TARGET_FMT_plx ", wcycle 0x%x cmd 0x%x value 0x%x)\n",
 443            __func__, offset, pfl->wcycle, pfl->cmd, value);
 444
 445  reset_flash:
 446     memory_region_rom_device_set_readable(&pfl->mem, true);
 447
 448     pfl->bypass = 0;
 449     pfl->wcycle = 0;
 450     pfl->cmd = 0;
 451 }
 452
 453
 454 static uint32_t pflash_readb_be(void *opaque, hwaddr addr)
 455 {
 456     return pflash_read(opaque, addr, 1, 1);
 457 }
 458
 459 static uint32_t pflash_readb_le(void *opaque, hwaddr addr)
 460 {
 461     return pflash_read(opaque, addr, 1, 0);
 462 }
 463
 464 static uint32_t pflash_readw_be(void *opaque, hwaddr addr)
 465 {
 466     pflash_t *pfl = opaque;
 467
 468     return pflash_read(pfl, addr, 2, 1);
 469 }
 470
 471 static uint32_t pflash_readw_le(void *opaque, hwaddr addr)
 472 {
 473     pflash_t *pfl = opaque;
 474
 475     return pflash_read(pfl, addr, 2, 0);
 476 }
 477
 478 static uint32_t pflash_readl_be(void *opaque, hwaddr addr)
 479 {
 480     pflash_t *pfl = opaque;
 481
 482     return pflash_read(pfl, addr, 4, 1);
 483 }
 484
 485 static uint32_t pflash_readl_le(void *opaque, hwaddr addr)
 486 {
 487     pflash_t *pfl = opaque;
 488
 489     return pflash_read(pfl, addr, 4, 0);
 490 }
 491
 492 static void pflash_writeb_be(void *opaque, hwaddr addr,
 493                              uint32_t value)
 494 {
 495     pflash_write(opaque, addr, value, 1, 1);
 496 }
 497
 498 static void pflash_writeb_le(void *opaque, hwaddr addr,
 499                              uint32_t value)
 500 {
 501     pflash_write(opaque, addr, value, 1, 0);
 502 }
 503
 504 static void pflash_writew_be(void *opaque, hwaddr addr,
 505                              uint32_t value)
 506 {
 507     pflash_t *pfl = opaque;
 508
 509     pflash_write(pfl, addr, value, 2, 1);
 510 }
 511
 512 static void pflash_writew_le(void *opaque, hwaddr addr,
 513                              uint32_t value)
 514 {
 515     pflash_t *pfl = opaque;
 516
 517     pflash_write(pfl, addr, value, 2, 0);
 518 }
 519
 520 static void pflash_writel_be(void *opaque, hwaddr addr,
 521                              uint32_t value)
 522 {
 523     pflash_t *pfl = opaque;
 524
 525     pflash_write(pfl, addr, value, 4, 1);
 526 }
 527
 528 static void pflash_writel_le(void *opaque, hwaddr addr,
 529                              uint32_t value)
 530 {
 531     pflash_t *pfl = opaque;
 532
 533     pflash_write(pfl, addr, value, 4, 0);
 534 }
 535
 536 static const MemoryRegionOps pflash_cfi01_ops_be = {
 537     .old_mmio = {
 538         .read = { pflash_readb_be, pflash_readw_be, pflash_readl_be, },
 539         .write = { pflash_writeb_be, pflash_writew_be, pflash_writel_be, },
 540     },
 541     .endianness = DEVICE_NATIVE_ENDIAN,
 542 };
 543
 544 static const MemoryRegionOps pflash_cfi01_ops_le = {
 545     .old_mmio = {
 546         .read = { pflash_readb_le, pflash_readw_le, pflash_readl_le, },
 547         .write = { pflash_writeb_le, pflash_writew_le, pflash_writel_le, },
 548     },
 549     .endianness = DEVICE_NATIVE_ENDIAN,
 550 };
 551
 552 static int pflash_cfi01_init(SysBusDevice *dev)
 553 {
 554     pflash_t *pfl = FROM_SYSBUS(typeof(*pfl), dev);
 555     uint64_t total_len;
 556     int ret;
 557
 558     total_len = pfl->sector_len * pfl->nb_blocs;
 559
 560     /* XXX: to be fixed */
 561 #if 0
 562     if (total_len != (8 * 1024 * 1024) && total_len != (16 * 1024 * 1024) &&
 563         total_len != (32 * 1024 * 1024) && total_len != (64 * 1024 * 1024))
 564         return NULL;
 565 #endif
 566
 567     memory_region_init_rom_device(
 568         &pfl->mem, pfl->be ? &pflash_cfi01_ops_be : &pflash_cfi01_ops_le, pfl,
 569         pfl->name, total_len);
 570     vmstate_register_ram(&pfl->mem, DEVICE(pfl));
 571     pfl->storage = memory_region_get_ram_ptr(&pfl->mem);
 572     sysbus_init_mmio(dev, &pfl->mem);
 573
 574     if (pfl->bs) {
 575         /* read the initial flash content */
 576         ret = bdrv_read(pfl->bs, 0, pfl->storage, total_len >> 9);
 577
 578         if (ret < 0) {
 579             vmstate_unregister_ram(&pfl->mem, DEVICE(pfl));
 580             memory_region_destroy(&pfl->mem);
 581             return 1;
 582         }
 583     }
 584
 585     if (pfl->bs) {
 586         pfl->ro = bdrv_is_read_only(pfl->bs);
 587     } else {
 588         pfl->ro = 0;
 589     }
 590
 591     pfl->timer = qemu_new_timer_ns(vm_clock, pflash_timer, pfl);
 592     pfl->wcycle = 0;
 593     pfl->cmd = 0;
 594     pfl->status = 0;
 595     /* Hardcoded CFI table */
 596     pfl->cfi_len = 0x52;
 597     /* Standard "QRY" string */
 598     pfl->cfi_table[0x10] = 'Q';
 599     pfl->cfi_table[0x11] = 'R';
 600     pfl->cfi_table[0x12] = 'Y';
 601     /* Command set (Intel) */
 602     pfl->cfi_table[0x13] = 0x01;
 603     pfl->cfi_table[0x14] = 0x00;
 604     /* Primary extended table address (none) */
 605     pfl->cfi_table[0x15] = 0x31;
 606     pfl->cfi_table[0x16] = 0x00;
 607     /* Alternate command set (none) */
 608     pfl->cfi_table[0x17] = 0x00;
 609     pfl->cfi_table[0x18] = 0x00;
 610     /* Alternate extended table (none) */
 611     pfl->cfi_table[0x19] = 0x00;
 612     pfl->cfi_table[0x1A] = 0x00;
 613     /* Vcc min */
 614     pfl->cfi_table[0x1B] = 0x45;
 615     /* Vcc max */
 616     pfl->cfi_table[0x1C] = 0x55;
 617     /* Vpp min (no Vpp pin) */
 618     pfl->cfi_table[0x1D] = 0x00;
 619     /* Vpp max (no Vpp pin) */
 620     pfl->cfi_table[0x1E] = 0x00;
 621     /* Reserved */
 622     pfl->cfi_table[0x1F] = 0x07;
 623     /* Timeout for min size buffer write */
 624     pfl->cfi_table[0x20] = 0x07;
 625     /* Typical timeout for block erase */
 626     pfl->cfi_table[0x21] = 0x0a;
 627     /* Typical timeout for full chip erase (4096 ms) */
 628     pfl->cfi_table[0x22] = 0x00;
 629     /* Reserved */
 630     pfl->cfi_table[0x23] = 0x04;
 631     /* Max timeout for buffer write */
 632     pfl->cfi_table[0x24] = 0x04;
 633     /* Max timeout for block erase */
 634     pfl->cfi_table[0x25] = 0x04;
 635     /* Max timeout for chip erase */
 636     pfl->cfi_table[0x26] = 0x00;
 637     /* Device size */
 638     pfl->cfi_table[0x27] = ctz32(total_len); // + 1;
 639     /* Flash device interface (8 & 16 bits) */
 640     pfl->cfi_table[0x28] = 0x02;
 641     pfl->cfi_table[0x29] = 0x00;
 642     /* Max number of bytes in multi-bytes write */
 643     if (pfl->width == 1) {
 644         pfl->cfi_table[0x2A] = 0x08;
 645     } else {
 646         pfl->cfi_table[0x2A] = 0x0B;
 647     }
 648     pfl->writeblock_size = 1 << pfl->cfi_table[0x2A];
 649
 650     pfl->cfi_table[0x2B] = 0x00;
 651     /* Number of erase block regions (uniform) */
 652     pfl->cfi_table[0x2C] = 0x01;
 653     /* Erase block region 1 */
 654     pfl->cfi_table[0x2D] = pfl->nb_blocs - 1;
 655     pfl->cfi_table[0x2E] = (pfl->nb_blocs - 1) >> 8;
 656     pfl->cfi_table[0x2F] = pfl->sector_len >> 8;
 657     pfl->cfi_table[0x30] = pfl->sector_len >> 16;
 658
 659     /* Extended */
 660     pfl->cfi_table[0x31] = 'P';
 661     pfl->cfi_table[0x32] = 'R';
 662     pfl->cfi_table[0x33] = 'I';
 663
 664     pfl->cfi_table[0x34] = '1';
 665     pfl->cfi_table[0x35] = '0';
 666
 667     pfl->cfi_table[0x36] = 0x00;
 668     pfl->cfi_table[0x37] = 0x00;
 669     pfl->cfi_table[0x38] = 0x00;
 670     pfl->cfi_table[0x39] = 0x00;
 671
 672     pfl->cfi_table[0x3a] = 0x00;
 673
 674     pfl->cfi_table[0x3b] = 0x00;
 675     pfl->cfi_table[0x3c] = 0x00;
 676
 677     pfl->cfi_table[0x3f] = 0x01; /* Number of protection fields */
 678
 679     return 0;
 680 }
 681
 682 static Property pflash_cfi01_properties[] = {
 683     DEFINE_PROP_DRIVE("drive", struct pflash_t, bs),
 684     DEFINE_PROP_UINT32("num-blocks", struct pflash_t, nb_blocs, 0),
 685     DEFINE_PROP_UINT64("sector-length", struct pflash_t, sector_len, 0),
 686     DEFINE_PROP_UINT8("width", struct pflash_t, width, 0),
 687     DEFINE_PROP_UINT8("big-endian", struct pflash_t, be, 0),
 688     DEFINE_PROP_UINT16("id0", struct pflash_t, ident0, 0),
 689     DEFINE_PROP_UINT16("id1", struct pflash_t, ident1, 0),
 690     DEFINE_PROP_UINT16("id2", struct pflash_t, ident2, 0),
 691     DEFINE_PROP_UINT16("id3", struct pflash_t, ident3, 0),
 692     DEFINE_PROP_STRING("name", struct pflash_t, name),
 693     DEFINE_PROP_END_OF_LIST(),
 694 };
 695
 696 static void pflash_cfi01_class_init(ObjectClass *klass, void *data)
 697 {
 698     DeviceClass *dc = DEVICE_CLASS(klass);
 699     SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 700
 701     k->init = pflash_cfi01_init;
 702     dc->props = pflash_cfi01_properties;
 703 }
 704
 705
 706 static const TypeInfo pflash_cfi01_info = {
 707     .name           = "cfi.pflash01",
 708     .parent         = TYPE_SYS_BUS_DEVICE,
 709     .instance_size  = sizeof(struct pflash_t),
 710     .class_init     = pflash_cfi01_class_init,
 711 };
 712
 713 static void pflash_cfi01_register_types(void)
 714 {
 715     type_register_static(&pflash_cfi01_info);
 716 }
 717
 718 type_init(pflash_cfi01_register_types)
 719
 720 pflash_t *pflash_cfi01_register(hwaddr base,
 721                                 DeviceState *qdev, const char *name,
 722                                 hwaddr size,
 723                                 BlockDriverState *bs,
 724                                 uint32_t sector_len, int nb_blocs, int width,
 725                                 uint16_t id0, uint16_t id1,
 726                                 uint16_t id2, uint16_t id3, int be)
 727 {
 728     DeviceState *dev = qdev_create(NULL, "cfi.pflash01");
 729     SysBusDevice *busdev = sysbus_from_qdev(dev);
 730     pflash_t *pfl = (pflash_t *)object_dynamic_cast(OBJECT(dev),
 731                                                     "cfi.pflash01");
 732
 733     if (bs && qdev_prop_set_drive(dev, "drive", bs)) {
 734         abort();
 735     }
 736     qdev_prop_set_uint32(dev, "num-blocks", nb_blocs);
 737     qdev_prop_set_uint64(dev, "sector-length", sector_len);
 738     qdev_prop_set_uint8(dev, "width", width);
 739     qdev_prop_set_uint8(dev, "big-endian", !!be);
 740     qdev_prop_set_uint16(dev, "id0", id0);
 741     qdev_prop_set_uint16(dev, "id1", id1);
 742     qdev_prop_set_uint16(dev, "id2", id2);
 743     qdev_prop_set_uint16(dev, "id3", id3);
 744     qdev_prop_set_string(dev, "name", name);
 745     qdev_init_nofail(dev);
 746
 747     sysbus_mmio_map(busdev, 0, base);
 748     return pfl;
 749 }
 750
 751 MemoryRegion *pflash_cfi01_get_memory(pflash_t *fl)
 752 {
 753     return &fl->mem;
 754 }