arch_init.c

   1 /*
   2  * QEMU System Emulator
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include <stdint.h>
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #ifndef _WIN32
  28 #include <sys/types.h>
  29 #include <sys/mman.h>
  30 #endif
  31 #include "config.h"
  32 #include "monitor.h"
  33 #include "sysemu.h"
  34 #include "arch_init.h"
  35 #include "audio/audio.h"
  36 #include "hw/pc.h"
  37 #include "hw/pci.h"
  38 #include "hw/audiodev.h"
  39 #include "kvm.h"
  40 #include "migration.h"
  41 #include "net.h"
  42 #include "gdbstub.h"
  43 #include "hw/smbios.h"
  44 #include "exec-memory.h"
  45 #include "hw/pcspk.h"
  46
  47 #ifdef TARGET_SPARC
  48 int graphic_width = 1024;
  49 int graphic_height = 768;
  50 int graphic_depth = 8;
  51 #else
  52 int graphic_width = 800;
  53 int graphic_height = 600;
  54 int graphic_depth = 15;
  55 #endif
  56
  57
  58 #if defined(TARGET_ALPHA)
  59 #define QEMU_ARCH QEMU_ARCH_ALPHA
  60 #elif defined(TARGET_ARM)
  61 #define QEMU_ARCH QEMU_ARCH_ARM
  62 #elif defined(TARGET_CRIS)
  63 #define QEMU_ARCH QEMU_ARCH_CRIS
  64 #elif defined(TARGET_I386)
  65 #define QEMU_ARCH QEMU_ARCH_I386
  66 #elif defined(TARGET_M68K)
  67 #define QEMU_ARCH QEMU_ARCH_M68K
  68 #elif defined(TARGET_LM32)
  69 #define QEMU_ARCH QEMU_ARCH_LM32
  70 #elif defined(TARGET_MICROBLAZE)
  71 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
  72 #elif defined(TARGET_MIPS)
  73 #define QEMU_ARCH QEMU_ARCH_MIPS
  74 #elif defined(TARGET_PPC)
  75 #define QEMU_ARCH QEMU_ARCH_PPC
  76 #elif defined(TARGET_S390X)
  77 #define QEMU_ARCH QEMU_ARCH_S390X
  78 #elif defined(TARGET_SH4)
  79 #define QEMU_ARCH QEMU_ARCH_SH4
  80 #elif defined(TARGET_SPARC)
  81 #define QEMU_ARCH QEMU_ARCH_SPARC
  82 #elif defined(TARGET_XTENSA)
  83 #define QEMU_ARCH QEMU_ARCH_XTENSA
  84 #endif
  85
  86 const uint32_t arch_type = QEMU_ARCH;
  87
  88 /***********************************************************/
  89 /* ram save/restore */
  90
  91 #define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
  92 #define RAM_SAVE_FLAG_COMPRESS 0x02
  93 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
  94 #define RAM_SAVE_FLAG_PAGE     0x08
  95 #define RAM_SAVE_FLAG_EOS      0x10
  96 #define RAM_SAVE_FLAG_CONTINUE 0x20
  97
  98 #ifdef __ALTIVEC__
  99 #include <altivec.h>
 100 #define VECTYPE        vector unsigned char
 101 #define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
 102 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
 103 /* altivec.h may redefine the bool macro as vector type.
 104  * Reset it to POSIX semantics. */
 105 #undef bool
 106 #define bool _Bool
 107 #elif defined __SSE2__
 108 #include <emmintrin.h>
 109 #define VECTYPE        __m128i
 110 #define SPLAT(p)       _mm_set1_epi8(*(p))
 111 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
 112 #else
 113 #define VECTYPE        unsigned long
 114 #define SPLAT(p)       (*(p) * (~0UL / 255))
 115 #define ALL_EQ(v1, v2) ((v1) == (v2))
 116 #endif
 117
 118
 119 static struct defconfig_file {
 120     const char *filename;
 121     /* Indicates it is an user config file (disabled by -no-user-config) */
 122     bool userconfig;
 123 } default_config_files[] = {
 124     { CONFIG_QEMU_DATADIR "/cpus-" TARGET_ARCH ".conf",  false },
 125     { CONFIG_QEMU_CONFDIR "/qemu.conf",                   true },
 126     { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
 127     { NULL }, /* end of list */
 128 };
 129
 130
 131 int qemu_read_default_config_files(bool userconfig)
 132 {
 133     int ret;
 134     struct defconfig_file *f;
 135
 136     for (f = default_config_files; f->filename; f++) {
 137         if (!userconfig && f->userconfig) {
 138             continue;
 139         }
 140         ret = qemu_read_config_file(f->filename);
 141         if (ret < 0 && ret != -ENOENT) {
 142             return ret;
 143         }
 144     }
 145
 146     return 0;
 147 }
 148
 149 static int is_dup_page(uint8_t *page)
 150 {
 151     VECTYPE *p = (VECTYPE *)page;
 152     VECTYPE val = SPLAT(page);
 153     int i;
 154
 155     for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
 156         if (!ALL_EQ(val, p[i])) {
 157             return 0;
 158         }
 159     }
 160
 161     return 1;
 162 }
 163
 164 static RAMBlock *last_block;
 165 static ram_addr_t last_offset;
 166
 167 static int ram_save_block(QEMUFile *f)
 168 {
 169     RAMBlock *block = last_block;
 170     ram_addr_t offset = last_offset;
 171     int bytes_sent = 0;
 172     MemoryRegion *mr;
 173
 174     if (!block)
 175         block = QLIST_FIRST(&ram_list.blocks);
 176
 177     do {
 178         mr = block->mr;
 179         if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
 180                                     DIRTY_MEMORY_MIGRATION)) {
 181             uint8_t *p;
 182             int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
 183
 184             memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE,
 185                                       DIRTY_MEMORY_MIGRATION);
 186
 187             p = memory_region_get_ram_ptr(mr) + offset;
 188
 189             if (is_dup_page(p)) {
 190                 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_COMPRESS);
 191                 if (!cont) {
 192                     qemu_put_byte(f, strlen(block->idstr));
 193                     qemu_put_buffer(f, (uint8_t *)block->idstr,
 194                                     strlen(block->idstr));
 195                 }
 196                 qemu_put_byte(f, *p);
 197                 bytes_sent = 1;
 198             } else {
 199                 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_PAGE);
 200                 if (!cont) {
 201                     qemu_put_byte(f, strlen(block->idstr));
 202                     qemu_put_buffer(f, (uint8_t *)block->idstr,
 203                                     strlen(block->idstr));
 204                 }
 205                 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
 206                 bytes_sent = TARGET_PAGE_SIZE;
 207             }
 208
 209             break;
 210         }
 211
 212         offset += TARGET_PAGE_SIZE;
 213         if (offset >= block->length) {
 214             offset = 0;
 215             block = QLIST_NEXT(block, next);
 216             if (!block)
 217                 block = QLIST_FIRST(&ram_list.blocks);
 218         }
 219     } while (block != last_block || offset != last_offset);
 220
 221     last_block = block;
 222     last_offset = offset;
 223
 224     return bytes_sent;
 225 }
 226
 227 static uint64_t bytes_transferred;
 228
 229 static ram_addr_t ram_save_remaining(void)
 230 {
 231     RAMBlock *block;
 232     ram_addr_t count = 0;
 233
 234     QLIST_FOREACH(block, &ram_list.blocks, next) {
 235         ram_addr_t addr;
 236         for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
 237             if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
 238                                         DIRTY_MEMORY_MIGRATION)) {
 239                 count++;
 240             }
 241         }
 242     }
 243
 244     return count;
 245 }
 246
 247 uint64_t ram_bytes_remaining(void)
 248 {
 249     return ram_save_remaining() * TARGET_PAGE_SIZE;
 250 }
 251
 252 uint64_t ram_bytes_transferred(void)
 253 {
 254     return bytes_transferred;
 255 }
 256
 257 uint64_t ram_bytes_total(void)
 258 {
 259     RAMBlock *block;
 260     uint64_t total = 0;
 261
 262     QLIST_FOREACH(block, &ram_list.blocks, next)
 263         total += block->length;
 264
 265     return total;
 266 }
 267
 268 static int block_compar(const void *a, const void *b)
 269 {
 270     RAMBlock * const *ablock = a;
 271     RAMBlock * const *bblock = b;
 272
 273     return strcmp((*ablock)->idstr, (*bblock)->idstr);
 274 }
 275
 276 static void sort_ram_list(void)
 277 {
 278     RAMBlock *block, *nblock, **blocks;
 279     int n;
 280     n = 0;
 281     QLIST_FOREACH(block, &ram_list.blocks, next) {
 282         ++n;
 283     }
 284     blocks = g_malloc(n * sizeof *blocks);
 285     n = 0;
 286     QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
 287         blocks[n++] = block;
 288         QLIST_REMOVE(block, next);
 289     }
 290     qsort(blocks, n, sizeof *blocks, block_compar);
 291     while (--n >= 0) {
 292         QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
 293     }
 294     g_free(blocks);
 295 }
 296
 297 int ram_save_live(QEMUFile *f, int stage, void *opaque)
 298 {
 299     ram_addr_t addr;
 300     uint64_t bytes_transferred_last;
 301     double bwidth = 0;
 302     uint64_t expected_time = 0;
 303     int ret;
 304
 305     if (stage < 0) {
 306         memory_global_dirty_log_stop();
 307         return 0;
 308     }
 309
 310     memory_global_sync_dirty_bitmap(get_system_memory());
 311
 312     if (stage == 1) {
 313         RAMBlock *block;
 314         bytes_transferred = 0;
 315         last_block = NULL;
 316         last_offset = 0;
 317         sort_ram_list();
 318
 319         /* Make sure all dirty bits are set */
 320         QLIST_FOREACH(block, &ram_list.blocks, next) {
 321             for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
 322                 if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
 323                                              DIRTY_MEMORY_MIGRATION)) {
 324                     memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
 325                 }
 326             }
 327         }
 328
 329         memory_global_dirty_log_start();
 330
 331         qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
 332
 333         QLIST_FOREACH(block, &ram_list.blocks, next) {
 334             qemu_put_byte(f, strlen(block->idstr));
 335             qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
 336             qemu_put_be64(f, block->length);
 337         }
 338     }
 339
 340     bytes_transferred_last = bytes_transferred;
 341     bwidth = qemu_get_clock_ns(rt_clock);
 342
 343     while ((ret = qemu_file_rate_limit(f)) == 0) {
 344         int bytes_sent;
 345
 346         bytes_sent = ram_save_block(f);
 347         bytes_transferred += bytes_sent;
 348         if (bytes_sent == 0) { /* no more blocks */
 349             break;
 350         }
 351     }
 352
 353     if (ret < 0) {
 354         return ret;
 355     }
 356
 357     bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
 358     bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
 359
 360     /* if we haven't transferred anything this round, force expected_time to a
 361      * a very high value, but without crashing */
 362     if (bwidth == 0) {
 363         bwidth = 0.000001;
 364     }
 365
 366     /* try transferring iterative blocks of memory */
 367     if (stage == 3) {
 368         int bytes_sent;
 369
 370         /* flush all remaining blocks regardless of rate limiting */
 371         while ((bytes_sent = ram_save_block(f)) != 0) {
 372             bytes_transferred += bytes_sent;
 373         }
 374         memory_global_dirty_log_stop();
 375     }
 376
 377     qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
 378
 379     expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
 380
 381     return (stage == 2) && (expected_time <= migrate_max_downtime());
 382 }
 383
 384 static inline void *host_from_stream_offset(QEMUFile *f,
 385                                             ram_addr_t offset,
 386                                             int flags)
 387 {
 388     static RAMBlock *block = NULL;
 389     char id[256];
 390     uint8_t len;
 391
 392     if (flags & RAM_SAVE_FLAG_CONTINUE) {
 393         if (!block) {
 394             fprintf(stderr, "Ack, bad migration stream!\n");
 395             return NULL;
 396         }
 397
 398         return memory_region_get_ram_ptr(block->mr) + offset;
 399     }
 400
 401     len = qemu_get_byte(f);
 402     qemu_get_buffer(f, (uint8_t *)id, len);
 403     id[len] = 0;
 404
 405     QLIST_FOREACH(block, &ram_list.blocks, next) {
 406         if (!strncmp(id, block->idstr, sizeof(id)))
 407             return memory_region_get_ram_ptr(block->mr) + offset;
 408     }
 409
 410     fprintf(stderr, "Can't find block %s!\n", id);
 411     return NULL;
 412 }
 413
 414 int ram_load(QEMUFile *f, void *opaque, int version_id)
 415 {
 416     ram_addr_t addr;
 417     int flags;
 418     int error;
 419
 420     if (version_id < 4 || version_id > 4) {
 421         return -EINVAL;
 422     }
 423
 424     do {
 425         addr = qemu_get_be64(f);
 426
 427         flags = addr & ~TARGET_PAGE_MASK;
 428         addr &= TARGET_PAGE_MASK;
 429
 430         if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
 431             if (version_id == 4) {
 432                 /* Synchronize RAM block list */
 433                 char id[256];
 434                 ram_addr_t length;
 435                 ram_addr_t total_ram_bytes = addr;
 436
 437                 while (total_ram_bytes) {
 438                     RAMBlock *block;
 439                     uint8_t len;
 440
 441                     len = qemu_get_byte(f);
 442                     qemu_get_buffer(f, (uint8_t *)id, len);
 443                     id[len] = 0;
 444                     length = qemu_get_be64(f);
 445
 446                     QLIST_FOREACH(block, &ram_list.blocks, next) {
 447                         if (!strncmp(id, block->idstr, sizeof(id))) {
 448                             if (block->length != length)
 449                                 return -EINVAL;
 450                             break;
 451                         }
 452                     }
 453
 454                     if (!block) {
 455                         fprintf(stderr, "Unknown ramblock \"%s\", cannot "
 456                                 "accept migration\n", id);
 457                         return -EINVAL;
 458                     }
 459
 460                     total_ram_bytes -= length;
 461                 }
 462             }
 463         }
 464
 465         if (flags & RAM_SAVE_FLAG_COMPRESS) {
 466             void *host;
 467             uint8_t ch;
 468
 469             host = host_from_stream_offset(f, addr, flags);
 470             if (!host) {
 471                 return -EINVAL;
 472             }
 473
 474             ch = qemu_get_byte(f);
 475             memset(host, ch, TARGET_PAGE_SIZE);
 476 #ifndef _WIN32
 477             if (ch == 0 &&
 478                 (!kvm_enabled() || kvm_has_sync_mmu())) {
 479                 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
 480             }
 481 #endif
 482         } else if (flags & RAM_SAVE_FLAG_PAGE) {
 483             void *host;
 484
 485             host = host_from_stream_offset(f, addr, flags);
 486             if (!host) {
 487                 return -EINVAL;
 488             }
 489
 490             qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
 491         }
 492         error = qemu_file_get_error(f);
 493         if (error) {
 494             return error;
 495         }
 496     } while (!(flags & RAM_SAVE_FLAG_EOS));
 497
 498     return 0;
 499 }
 500
 501 #ifdef HAS_AUDIO
 502 struct soundhw {
 503     const char *name;
 504     const char *descr;
 505     int enabled;
 506     int isa;
 507     union {
 508         int (*init_isa) (ISABus *bus);
 509         int (*init_pci) (PCIBus *bus);
 510     } init;
 511 };
 512
 513 static struct soundhw soundhw[] = {
 514 #ifdef HAS_AUDIO_CHOICE
 515 #ifdef CONFIG_PCSPK
 516     {
 517         "pcspk",
 518         "PC speaker",
 519         0,
 520         1,
 521         { .init_isa = pcspk_audio_init }
 522     },
 523 #endif
 524
 525 #ifdef CONFIG_SB16
 526     {
 527         "sb16",
 528         "Creative Sound Blaster 16",
 529         0,
 530         1,
 531         { .init_isa = SB16_init }
 532     },
 533 #endif
 534
 535 #ifdef CONFIG_CS4231A
 536     {
 537         "cs4231a",
 538         "CS4231A",
 539         0,
 540         1,
 541         { .init_isa = cs4231a_init }
 542     },
 543 #endif
 544
 545 #ifdef CONFIG_ADLIB
 546     {
 547         "adlib",
 548 #ifdef HAS_YMF262
 549         "Yamaha YMF262 (OPL3)",
 550 #else
 551         "Yamaha YM3812 (OPL2)",
 552 #endif
 553         0,
 554         1,
 555         { .init_isa = Adlib_init }
 556     },
 557 #endif
 558
 559 #ifdef CONFIG_GUS
 560     {
 561         "gus",
 562         "Gravis Ultrasound GF1",
 563         0,
 564         1,
 565         { .init_isa = GUS_init }
 566     },
 567 #endif
 568
 569 #ifdef CONFIG_AC97
 570     {
 571         "ac97",
 572         "Intel 82801AA AC97 Audio",
 573         0,
 574         0,
 575         { .init_pci = ac97_init }
 576     },
 577 #endif
 578
 579 #ifdef CONFIG_ES1370
 580     {
 581         "es1370",
 582         "ENSONIQ AudioPCI ES1370",
 583         0,
 584         0,
 585         { .init_pci = es1370_init }
 586     },
 587 #endif
 588
 589 #ifdef CONFIG_HDA
 590     {
 591         "hda",
 592         "Intel HD Audio",
 593         0,
 594         0,
 595         { .init_pci = intel_hda_and_codec_init }
 596     },
 597 #endif
 598
 599 #endif /* HAS_AUDIO_CHOICE */
 600
 601     { NULL, NULL, 0, 0, { NULL } }
 602 };
 603
 604 void select_soundhw(const char *optarg)
 605 {
 606     struct soundhw *c;
 607
 608     if (*optarg == '?') {
 609     show_valid_cards:
 610
 611         printf("Valid sound card names (comma separated):\n");
 612         for (c = soundhw; c->name; ++c) {
 613             printf ("%-11s %s\n", c->name, c->descr);
 614         }
 615         printf("\n-soundhw all will enable all of the above\n");
 616         exit(*optarg != '?');
 617     }
 618     else {
 619         size_t l;
 620         const char *p;
 621         char *e;
 622         int bad_card = 0;
 623
 624         if (!strcmp(optarg, "all")) {
 625             for (c = soundhw; c->name; ++c) {
 626                 c->enabled = 1;
 627             }
 628             return;
 629         }
 630
 631         p = optarg;
 632         while (*p) {
 633             e = strchr(p, ',');
 634             l = !e ? strlen(p) : (size_t) (e - p);
 635
 636             for (c = soundhw; c->name; ++c) {
 637                 if (!strncmp(c->name, p, l) && !c->name[l]) {
 638                     c->enabled = 1;
 639                     break;
 640                 }
 641             }
 642
 643             if (!c->name) {
 644                 if (l > 80) {
 645                     fprintf(stderr,
 646                             "Unknown sound card name (too big to show)\n");
 647                 }
 648                 else {
 649                     fprintf(stderr, "Unknown sound card name `%.*s'\n",
 650                             (int) l, p);
 651                 }
 652                 bad_card = 1;
 653             }
 654             p += l + (e != NULL);
 655         }
 656
 657         if (bad_card) {
 658             goto show_valid_cards;
 659         }
 660     }
 661 }
 662
 663 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
 664 {
 665     struct soundhw *c;
 666
 667     for (c = soundhw; c->name; ++c) {
 668         if (c->enabled) {
 669             if (c->isa) {
 670                 if (isa_bus) {
 671                     c->init.init_isa(isa_bus);
 672                 }
 673             } else {
 674                 if (pci_bus) {
 675                     c->init.init_pci(pci_bus);
 676                 }
 677             }
 678         }
 679     }
 680 }
 681 #else
 682 void select_soundhw(const char *optarg)
 683 {
 684 }
 685 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
 686 {
 687 }
 688 #endif
 689
 690 int qemu_uuid_parse(const char *str, uint8_t *uuid)
 691 {
 692     int ret;
 693
 694     if (strlen(str) != 36) {
 695         return -1;
 696     }
 697
 698     ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
 699                  &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
 700                  &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
 701                  &uuid[15]);
 702
 703     if (ret != 16) {
 704         return -1;
 705     }
 706 #ifdef TARGET_I386
 707     smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
 708 #endif
 709     return 0;
 710 }
 711
 712 void do_acpitable_option(const char *optarg)
 713 {
 714 #ifdef TARGET_I386
 715     if (acpi_table_add(optarg) < 0) {
 716         fprintf(stderr, "Wrong acpi table provided\n");
 717         exit(1);
 718     }
 719 #endif
 720 }
 721
 722 void do_smbios_option(const char *optarg)
 723 {
 724 #ifdef TARGET_I386
 725     if (smbios_entry_add(optarg) < 0) {
 726         fprintf(stderr, "Wrong smbios provided\n");
 727         exit(1);
 728     }
 729 #endif
 730 }
 731
 732 void cpudef_init(void)
 733 {
 734 #if defined(cpudef_setup)
 735     cpudef_setup(); /* parse cpu definitions in target config file */
 736 #endif
 737 }
 738
 739 int audio_available(void)
 740 {
 741 #ifdef HAS_AUDIO
 742     return 1;
 743 #else
 744     return 0;
 745 #endif
 746 }
 747
 748 int tcg_available(void)
 749 {
 750     return 1;
 751 }
 752
 753 int kvm_available(void)
 754 {
 755 #ifdef CONFIG_KVM
 756     return 1;
 757 #else
 758     return 0;
 759 #endif
 760 }
 761
 762 int xen_available(void)
 763 {
 764 #ifdef CONFIG_XEN
 765     return 1;
 766 #else
 767     return 0;
 768 #endif
 769 }