hw/m25p80.c

   1 /*
   2  * ST M25P80 emulator. Emulate all SPI flash devices based on the m25p80 command
   3  * set. Known devices table current as of Jun/2012 and taken from linux.
   4  * See drivers/mtd/devices/m25p80.c.
   5  *
   6  * Copyright (C) 2011 Edgar E. Iglesias <edgar.iglesias@gmail.com>
   7  * Copyright (C) 2012 Peter A. G. Crosthwaite <peter.crosthwaite@petalogix.com>
   8  * Copyright (C) 2012 PetaLogix
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 or
  13  * (at your option) a later version of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 #include "hw.h"
  25 #include "blockdev.h"
  26 #include "ssi.h"
  27 #include "devices.h"
  28
  29 #ifdef M25P80_ERR_DEBUG
  30 #define DB_PRINT(...) do { \
  31     fprintf(stderr,  ": %s: ", __func__); \
  32     fprintf(stderr, ## __VA_ARGS__); \
  33     } while (0);
  34 #else
  35     #define DB_PRINT(...)
  36 #endif
  37
  38 /* Fields for FlashPartInfo->flags */
  39
  40 /* erase capabilities */
  41 #define ER_4K 1
  42 #define ER_32K 2
  43 /* set to allow the page program command to write 0s back to 1. Useful for
  44  * modelling EEPROM with SPI flash command set
  45  */
  46 #define WR_1 0x100
  47
  48 typedef struct FlashPartInfo {
  49     const char *part_name;
  50     /* jedec code. (jedec >> 16) & 0xff is the 1st byte, >> 8 the 2nd etc */
  51     uint32_t jedec;
  52     /* extended jedec code */
  53     uint16_t ext_jedec;
  54     /* there is confusion between manufacturers as to what a sector is. In this
  55      * device model, a "sector" is the size that is erased by the ERASE_SECTOR
  56      * command (opcode 0xd8).
  57      */
  58     uint32_t sector_size;
  59     uint32_t n_sectors;
  60     uint32_t page_size;
  61     uint8_t flags;
  62 } FlashPartInfo;
  63
  64 /* adapted from linux */
  65
  66 #define INFO(_part_name, _jedec, _ext_jedec, _sector_size, _n_sectors, _flags)\
  67     .part_name = (_part_name),\
  68     .jedec = (_jedec),\
  69     .ext_jedec = (_ext_jedec),\
  70     .sector_size = (_sector_size),\
  71     .n_sectors = (_n_sectors),\
  72     .page_size = 256,\
  73     .flags = (_flags),\
  74
  75 static const FlashPartInfo known_devices[] = {
  76     /* Atmel -- some are (confusingly) marketed as "DataFlash" */
  77     { INFO("at25fs010",   0x1f6601,      0,  32 << 10,   4, ER_4K) },
  78     { INFO("at25fs040",   0x1f6604,      0,  64 << 10,   8, ER_4K) },
  79
  80     { INFO("at25df041a",  0x1f4401,      0,  64 << 10,   8, ER_4K) },
  81     { INFO("at25df321a",  0x1f4701,      0,  64 << 10,  64, ER_4K) },
  82     { INFO("at25df641",   0x1f4800,      0,  64 << 10, 128, ER_4K) },
  83
  84     { INFO("at26f004",    0x1f0400,      0,  64 << 10,   8, ER_4K) },
  85     { INFO("at26df081a",  0x1f4501,      0,  64 << 10,  16, ER_4K) },
  86     { INFO("at26df161a",  0x1f4601,      0,  64 << 10,  32, ER_4K) },
  87     { INFO("at26df321",   0x1f4700,      0,  64 << 10,  64, ER_4K) },
  88
  89     /* EON -- en25xxx */
  90     { INFO("en25f32",     0x1c3116,      0,  64 << 10,  64, ER_4K) },
  91     { INFO("en25p32",     0x1c2016,      0,  64 << 10,  64, 0) },
  92     { INFO("en25q32b",    0x1c3016,      0,  64 << 10,  64, 0) },
  93     { INFO("en25p64",     0x1c2017,      0,  64 << 10, 128, 0) },
  94
  95     /* Intel/Numonyx -- xxxs33b */
  96     { INFO("160s33b",     0x898911,      0,  64 << 10,  32, 0) },
  97     { INFO("320s33b",     0x898912,      0,  64 << 10,  64, 0) },
  98     { INFO("640s33b",     0x898913,      0,  64 << 10, 128, 0) },
  99
 100     /* Macronix */
 101     { INFO("mx25l4005a",  0xc22013,      0,  64 << 10,   8, ER_4K) },
 102     { INFO("mx25l8005",   0xc22014,      0,  64 << 10,  16, 0) },
 103     { INFO("mx25l1606e",  0xc22015,      0,  64 << 10,  32, ER_4K) },
 104     { INFO("mx25l3205d",  0xc22016,      0,  64 << 10,  64, 0) },
 105     { INFO("mx25l6405d",  0xc22017,      0,  64 << 10, 128, 0) },
 106     { INFO("mx25l12805d", 0xc22018,      0,  64 << 10, 256, 0) },
 107     { INFO("mx25l12855e", 0xc22618,      0,  64 << 10, 256, 0) },
 108     { INFO("mx25l25635e", 0xc22019,      0,  64 << 10, 512, 0) },
 109     { INFO("mx25l25655e", 0xc22619,      0,  64 << 10, 512, 0) },
 110
 111     /* Spansion -- single (large) sector size only, at least
 112      * for the chips listed here (without boot sectors).
 113      */
 114     { INFO("s25sl004a",   0x010212,      0,  64 << 10,   8, 0) },
 115     { INFO("s25sl008a",   0x010213,      0,  64 << 10,  16, 0) },
 116     { INFO("s25sl016a",   0x010214,      0,  64 << 10,  32, 0) },
 117     { INFO("s25sl032a",   0x010215,      0,  64 << 10,  64, 0) },
 118     { INFO("s25sl032p",   0x010215, 0x4d00,  64 << 10,  64, ER_4K) },
 119     { INFO("s25sl064a",   0x010216,      0,  64 << 10, 128, 0) },
 120     { INFO("s25fl256s0",  0x010219, 0x4d00, 256 << 10, 128, 0) },
 121     { INFO("s25fl256s1",  0x010219, 0x4d01,  64 << 10, 512, 0) },
 122     { INFO("s25fl512s",   0x010220, 0x4d00, 256 << 10, 256, 0) },
 123     { INFO("s70fl01gs",   0x010221, 0x4d00, 256 << 10, 256, 0) },
 124     { INFO("s25sl12800",  0x012018, 0x0300, 256 << 10,  64, 0) },
 125     { INFO("s25sl12801",  0x012018, 0x0301,  64 << 10, 256, 0) },
 126     { INFO("s25fl129p0",  0x012018, 0x4d00, 256 << 10,  64, 0) },
 127     { INFO("s25fl129p1",  0x012018, 0x4d01,  64 << 10, 256, 0) },
 128     { INFO("s25fl016k",   0xef4015,      0,  64 << 10,  32, ER_4K | ER_32K) },
 129     { INFO("s25fl064k",   0xef4017,      0,  64 << 10, 128, ER_4K | ER_32K) },
 130
 131     /* SST -- large erase sizes are "overlays", "sectors" are 4<< 10 */
 132     { INFO("sst25vf040b", 0xbf258d,      0,  64 << 10,   8, ER_4K) },
 133     { INFO("sst25vf080b", 0xbf258e,      0,  64 << 10,  16, ER_4K) },
 134     { INFO("sst25vf016b", 0xbf2541,      0,  64 << 10,  32, ER_4K) },
 135     { INFO("sst25vf032b", 0xbf254a,      0,  64 << 10,  64, ER_4K) },
 136     { INFO("sst25wf512",  0xbf2501,      0,  64 << 10,   1, ER_4K) },
 137     { INFO("sst25wf010",  0xbf2502,      0,  64 << 10,   2, ER_4K) },
 138     { INFO("sst25wf020",  0xbf2503,      0,  64 << 10,   4, ER_4K) },
 139     { INFO("sst25wf040",  0xbf2504,      0,  64 << 10,   8, ER_4K) },
 140
 141     /* ST Microelectronics -- newer production may have feature updates */
 142     { INFO("m25p05",      0x202010,      0,  32 << 10,   2, 0) },
 143     { INFO("m25p10",      0x202011,      0,  32 << 10,   4, 0) },
 144     { INFO("m25p20",      0x202012,      0,  64 << 10,   4, 0) },
 145     { INFO("m25p40",      0x202013,      0,  64 << 10,   8, 0) },
 146     { INFO("m25p80",      0x202014,      0,  64 << 10,  16, 0) },
 147     { INFO("m25p16",      0x202015,      0,  64 << 10,  32, 0) },
 148     { INFO("m25p32",      0x202016,      0,  64 << 10,  64, 0) },
 149     { INFO("m25p64",      0x202017,      0,  64 << 10, 128, 0) },
 150     { INFO("m25p128",     0x202018,      0, 256 << 10,  64, 0) },
 151
 152     { INFO("m45pe10",     0x204011,      0,  64 << 10,   2, 0) },
 153     { INFO("m45pe80",     0x204014,      0,  64 << 10,  16, 0) },
 154     { INFO("m45pe16",     0x204015,      0,  64 << 10,  32, 0) },
 155
 156     { INFO("m25pe80",     0x208014,      0,  64 << 10,  16, 0) },
 157     { INFO("m25pe16",     0x208015,      0,  64 << 10,  32, ER_4K) },
 158
 159     { INFO("m25px32",     0x207116,      0,  64 << 10,  64, ER_4K) },
 160     { INFO("m25px32-s0",  0x207316,      0,  64 << 10,  64, ER_4K) },
 161     { INFO("m25px32-s1",  0x206316,      0,  64 << 10,  64, ER_4K) },
 162     { INFO("m25px64",     0x207117,      0,  64 << 10, 128, 0) },
 163
 164     /* Winbond -- w25x "blocks" are 64k, "sectors" are 4KiB */
 165     { INFO("w25x10",      0xef3011,      0,  64 << 10,   2, ER_4K) },
 166     { INFO("w25x20",      0xef3012,      0,  64 << 10,   4, ER_4K) },
 167     { INFO("w25x40",      0xef3013,      0,  64 << 10,   8, ER_4K) },
 168     { INFO("w25x80",      0xef3014,      0,  64 << 10,  16, ER_4K) },
 169     { INFO("w25x16",      0xef3015,      0,  64 << 10,  32, ER_4K) },
 170     { INFO("w25x32",      0xef3016,      0,  64 << 10,  64, ER_4K) },
 171     { INFO("w25q32",      0xef4016,      0,  64 << 10,  64, ER_4K) },
 172     { INFO("w25x64",      0xef3017,      0,  64 << 10, 128, ER_4K) },
 173     { INFO("w25q64",      0xef4017,      0,  64 << 10, 128, ER_4K) },
 174
 175     /* Numonyx -- n25q128 */
 176     { INFO("n25q128",      0x20ba18,      0,  64 << 10, 256, 0) },
 177
 178     { },
 179 };
 180
 181 typedef enum {
 182     NOP = 0,
 183     PP = 0x2,
 184     READ = 0x3,
 185     WRDI = 0x4,
 186     RDSR = 0x5,
 187     WREN = 0x6,
 188     FAST_READ = 0xb,
 189     ERASE_4K = 0x20,
 190     ERASE_32K = 0x52,
 191     ERASE_SECTOR = 0xd8,
 192     JEDEC_READ = 0x9f,
 193     BULK_ERASE = 0xc7,
 194 } FlashCMD;
 195
 196 typedef enum {
 197     STATE_IDLE,
 198     STATE_PAGE_PROGRAM,
 199     STATE_READ,
 200     STATE_COLLECTING_DATA,
 201     STATE_READING_DATA,
 202 } CMDState;
 203
 204 typedef struct Flash {
 205     SSISlave ssidev;
 206     uint32_t r;
 207
 208     BlockDriverState *bdrv;
 209
 210     uint8_t *storage;
 211     uint32_t size;
 212     int page_size;
 213
 214     uint8_t state;
 215     uint8_t data[16];
 216     uint32_t len;
 217     uint32_t pos;
 218     uint8_t needed_bytes;
 219     uint8_t cmd_in_progress;
 220     uint64_t cur_addr;
 221     bool write_enable;
 222
 223     int64_t dirty_page;
 224
 225     char *part_name;
 226     const FlashPartInfo *pi;
 227
 228 } Flash;
 229
 230 static void bdrv_sync_complete(void *opaque, int ret)
 231 {
 232     /* do nothing. Masters do not directly interact with the backing store,
 233      * only the working copy so no mutexing required.
 234      */
 235 }
 236
 237 static void flash_sync_page(Flash *s, int page)
 238 {
 239     if (s->bdrv) {
 240         int bdrv_sector, nb_sectors;
 241         QEMUIOVector iov;
 242
 243         bdrv_sector = (page * s->pi->page_size) / BDRV_SECTOR_SIZE;
 244         nb_sectors = DIV_ROUND_UP(s->pi->page_size, BDRV_SECTOR_SIZE);
 245         qemu_iovec_init(&iov, 1);
 246         qemu_iovec_add(&iov, s->storage + bdrv_sector * BDRV_SECTOR_SIZE,
 247                                                 nb_sectors * BDRV_SECTOR_SIZE);
 248         bdrv_aio_writev(s->bdrv, bdrv_sector, &iov, nb_sectors,
 249                                                 bdrv_sync_complete, NULL);
 250     }
 251 }
 252
 253 static inline void flash_sync_area(Flash *s, int64_t off, int64_t len)
 254 {
 255     int64_t start, end, nb_sectors;
 256     QEMUIOVector iov;
 257
 258     if (!s->bdrv) {
 259         return;
 260     }
 261
 262     assert(!(len % BDRV_SECTOR_SIZE));
 263     start = off / BDRV_SECTOR_SIZE;
 264     end = (off + len) / BDRV_SECTOR_SIZE;
 265     nb_sectors = end - start;
 266     qemu_iovec_init(&iov, 1);
 267     qemu_iovec_add(&iov, s->storage + (start * BDRV_SECTOR_SIZE),
 268                                         nb_sectors * BDRV_SECTOR_SIZE);
 269     bdrv_aio_writev(s->bdrv, start, &iov, nb_sectors, bdrv_sync_complete, NULL);
 270 }
 271
 272 static void flash_erase(Flash *s, int offset, FlashCMD cmd)
 273 {
 274     uint32_t len;
 275     uint8_t capa_to_assert = 0;
 276
 277     switch (cmd) {
 278     case ERASE_4K:
 279         len = 4 << 10;
 280         capa_to_assert = ER_4K;
 281         break;
 282     case ERASE_32K:
 283         len = 32 << 10;
 284         capa_to_assert = ER_32K;
 285         break;
 286     case ERASE_SECTOR:
 287         len = s->pi->sector_size;
 288         break;
 289     case BULK_ERASE:
 290         len = s->size;
 291         break;
 292     default:
 293         abort();
 294     }
 295
 296     DB_PRINT("offset = %#x, len = %d\n", offset, len);
 297     if ((s->pi->flags & capa_to_assert) != capa_to_assert) {
 298         hw_error("m25p80: %dk erase size not supported by device\n", len);
 299     }
 300
 301     if (!s->write_enable) {
 302         DB_PRINT("erase with write protect!\n");
 303         return;
 304     }
 305     memset(s->storage + offset, 0xff, len);
 306     flash_sync_area(s, offset, len);
 307 }
 308
 309 static inline void flash_sync_dirty(Flash *s, int64_t newpage)
 310 {
 311     if (s->dirty_page >= 0 && s->dirty_page != newpage) {
 312         flash_sync_page(s, s->dirty_page);
 313         s->dirty_page = newpage;
 314     }
 315 }
 316
 317 static inline
 318 void flash_write8(Flash *s, uint64_t addr, uint8_t data)
 319 {
 320     int64_t page = addr / s->pi->page_size;
 321     uint8_t prev = s->storage[s->cur_addr];
 322
 323     if (!s->write_enable) {
 324         DB_PRINT("write with write protect!\n");
 325     }
 326
 327     if ((prev ^ data) & data) {
 328         DB_PRINT("programming zero to one! addr=%lx  %x -> %x\n",
 329                   addr, prev, data);
 330     }
 331
 332     if (s->pi->flags & WR_1) {
 333         s->storage[s->cur_addr] = data;
 334     } else {
 335         s->storage[s->cur_addr] &= data;
 336     }
 337
 338     flash_sync_dirty(s, page);
 339     s->dirty_page = page;
 340 }
 341
 342 static void complete_collecting_data(Flash *s)
 343 {
 344     s->cur_addr = s->data[0] << 16;
 345     s->cur_addr |= s->data[1] << 8;
 346     s->cur_addr |= s->data[2];
 347
 348     switch (s->cmd_in_progress) {
 349     case PP:
 350         s->state = STATE_PAGE_PROGRAM;
 351         break;
 352     case READ:
 353     case FAST_READ:
 354         s->state = STATE_READ;
 355         break;
 356     case ERASE_4K:
 357     case ERASE_32K:
 358     case ERASE_SECTOR:
 359         flash_erase(s, s->cur_addr, s->cmd_in_progress);
 360         break;
 361     default:
 362         break;
 363     }
 364 }
 365
 366 static void decode_new_cmd(Flash *s, uint32_t value)
 367 {
 368     s->cmd_in_progress = value;
 369     DB_PRINT("decoded new command:%x\n", value);
 370
 371     switch (value) {
 372
 373     case ERASE_4K:
 374     case ERASE_32K:
 375     case ERASE_SECTOR:
 376     case READ:
 377     case PP:
 378         s->needed_bytes = 3;
 379         s->pos = 0;
 380         s->len = 0;
 381         s->state = STATE_COLLECTING_DATA;
 382         break;
 383
 384     case FAST_READ:
 385         s->needed_bytes = 4;
 386         s->pos = 0;
 387         s->len = 0;
 388         s->state = STATE_COLLECTING_DATA;
 389         break;
 390
 391     case WRDI:
 392         s->write_enable = false;
 393         break;
 394     case WREN:
 395         s->write_enable = true;
 396         break;
 397
 398     case RDSR:
 399         s->data[0] = (!!s->write_enable) << 1;
 400         s->pos = 0;
 401         s->len = 1;
 402         s->state = STATE_READING_DATA;
 403         break;
 404
 405     case JEDEC_READ:
 406         DB_PRINT("populated jedec code\n");
 407         s->data[0] = (s->pi->jedec >> 16) & 0xff;
 408         s->data[1] = (s->pi->jedec >> 8) & 0xff;
 409         s->data[2] = s->pi->jedec & 0xff;
 410         if (s->pi->ext_jedec) {
 411             s->data[3] = (s->pi->ext_jedec >> 8) & 0xff;
 412             s->data[4] = s->pi->ext_jedec & 0xff;
 413             s->len = 5;
 414         } else {
 415             s->len = 3;
 416         }
 417         s->pos = 0;
 418         s->state = STATE_READING_DATA;
 419         break;
 420
 421     case BULK_ERASE:
 422         if (s->write_enable) {
 423             DB_PRINT("chip erase\n");
 424             flash_erase(s, 0, BULK_ERASE);
 425         } else {
 426             DB_PRINT("chip erase with write protect!\n");
 427         }
 428         break;
 429     case NOP:
 430         break;
 431     default:
 432         DB_PRINT("Unknown cmd %x\n", value);
 433         break;
 434     }
 435 }
 436
 437 static int m25p80_cs(SSISlave *ss, bool select)
 438 {
 439     Flash *s = FROM_SSI_SLAVE(Flash, ss);
 440
 441     if (select) {
 442         s->len = 0;
 443         s->pos = 0;
 444         s->state = STATE_IDLE;
 445         flash_sync_dirty(s, -1);
 446     }
 447
 448     DB_PRINT("%sselect\n", select ? "de" : "");
 449
 450     return 0;
 451 }
 452
 453 static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
 454 {
 455     Flash *s = FROM_SSI_SLAVE(Flash, ss);
 456     uint32_t r = 0;
 457
 458     switch (s->state) {
 459
 460     case STATE_PAGE_PROGRAM:
 461         DB_PRINT("page program cur_addr=%lx data=%x\n", s->cur_addr,
 462                  (uint8_t)tx);
 463         flash_write8(s, s->cur_addr, (uint8_t)tx);
 464         s->cur_addr++;
 465         break;
 466
 467     case STATE_READ:
 468         r = s->storage[s->cur_addr];
 469         DB_PRINT("READ 0x%lx=%x\n", s->cur_addr, r);
 470         s->cur_addr = (s->cur_addr + 1) % s->size;
 471         break;
 472
 473     case STATE_COLLECTING_DATA:
 474         s->data[s->len] = (uint8_t)tx;
 475         s->len++;
 476
 477         if (s->len == s->needed_bytes) {
 478             complete_collecting_data(s);
 479         }
 480         break;
 481
 482     case STATE_READING_DATA:
 483         r = s->data[s->pos];
 484         s->pos++;
 485         if (s->pos == s->len) {
 486             s->pos = 0;
 487             s->state = STATE_IDLE;
 488         }
 489         break;
 490
 491     default:
 492     case STATE_IDLE:
 493         decode_new_cmd(s, (uint8_t)tx);
 494         break;
 495     }
 496
 497     return r;
 498 }
 499
 500 static int m25p80_init(SSISlave *ss)
 501 {
 502     DriveInfo *dinfo;
 503     Flash *s = FROM_SSI_SLAVE(Flash, ss);
 504     const FlashPartInfo *i;
 505
 506     if (!s->part_name) { /* default to actual m25p80 if no partname given */
 507         s->part_name = (char *)"m25p80";
 508     }
 509
 510     i = known_devices;
 511     for (i = known_devices;; i++) {
 512         assert(i);
 513         if (!i->part_name) {
 514             fprintf(stderr, "Unknown SPI flash part: \"%s\"\n", s->part_name);
 515             return 1;
 516         } else if (!strcmp(i->part_name, s->part_name)) {
 517             s->pi = i;
 518             break;
 519         }
 520     }
 521
 522     s->size = s->pi->sector_size * s->pi->n_sectors;
 523     s->dirty_page = -1;
 524     s->storage = qemu_blockalign(s->bdrv, s->size);
 525
 526     dinfo = drive_get_next(IF_MTD);
 527
 528     if (dinfo && dinfo->bdrv) {
 529         DB_PRINT("Binding to IF_MTD drive\n");
 530         s->bdrv = dinfo->bdrv;
 531         /* FIXME: Move to late init */
 532         if (bdrv_read(s->bdrv, 0, s->storage, DIV_ROUND_UP(s->size,
 533                                                     BDRV_SECTOR_SIZE))) {
 534             fprintf(stderr, "Failed to initialize SPI flash!\n");
 535             return 1;
 536         }
 537     } else {
 538         memset(s->storage, 0xFF, s->size);
 539     }
 540
 541     return 0;
 542 }
 543
 544 static void m25p80_pre_save(void *opaque)
 545 {
 546     flash_sync_dirty((Flash *)opaque, -1);
 547 }
 548
 549 static const VMStateDescription vmstate_m25p80 = {
 550     .name = "xilinx_spi",
 551     .version_id = 1,
 552     .minimum_version_id = 1,
 553     .minimum_version_id_old = 1,
 554     .pre_save = m25p80_pre_save,
 555     .fields = (VMStateField[]) {
 556         VMSTATE_UINT8(state, Flash),
 557         VMSTATE_UINT8_ARRAY(data, Flash, 16),
 558         VMSTATE_UINT32(len, Flash),
 559         VMSTATE_UINT32(pos, Flash),
 560         VMSTATE_UINT8(needed_bytes, Flash),
 561         VMSTATE_UINT8(cmd_in_progress, Flash),
 562         VMSTATE_UINT64(cur_addr, Flash),
 563         VMSTATE_BOOL(write_enable, Flash),
 564         VMSTATE_END_OF_LIST()
 565     }
 566 };
 567
 568 static Property m25p80_properties[] = {
 569     DEFINE_PROP_STRING("partname", Flash, part_name),
 570     DEFINE_PROP_END_OF_LIST(),
 571 };
 572
 573 static void m25p80_class_init(ObjectClass *klass, void *data)
 574 {
 575     DeviceClass *dc = DEVICE_CLASS(klass);
 576     SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
 577
 578     k->init = m25p80_init;
 579     k->transfer = m25p80_transfer8;
 580     k->set_cs = m25p80_cs;
 581     k->cs_polarity = SSI_CS_LOW;
 582     dc->props = m25p80_properties;
 583     dc->vmsd = &vmstate_m25p80;
 584 }
 585
 586 static const TypeInfo m25p80_info = {
 587     .name           = "m25p80",
 588     .parent         = TYPE_SSI_SLAVE,
 589     .instance_size  = sizeof(Flash),
 590     .class_init     = m25p80_class_init,
 591 };
 592
 593 static void m25p80_register_types(void)
 594 {
 595     type_register_static(&m25p80_info);
 596 }
 597
 598 type_init(m25p80_register_types)