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 DEBUG_ARCH_INIT 48 #define DPRINTF(fmt, ...) \ 49 do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0) 50 #else 51 #define DPRINTF(fmt, ...) \ 52 do { } while (0) 53 #endif 54 55 #ifdef TARGET_SPARC 56 int graphic_width = 1024; 57 int graphic_height = 768; 58 int graphic_depth = 8; 59 #else 60 int graphic_width = 800; 61 int graphic_height = 600; 62 int graphic_depth = 15; 63 #endif 64 65 66 #if defined(TARGET_ALPHA) 67 #define QEMU_ARCH QEMU_ARCH_ALPHA 68 #elif defined(TARGET_ARM) 69 #define QEMU_ARCH QEMU_ARCH_ARM 70 #elif defined(TARGET_CRIS) 71 #define QEMU_ARCH QEMU_ARCH_CRIS 72 #elif defined(TARGET_I386) 73 #define QEMU_ARCH QEMU_ARCH_I386 74 #elif defined(TARGET_M68K) 75 #define QEMU_ARCH QEMU_ARCH_M68K 76 #elif defined(TARGET_LM32) 77 #define QEMU_ARCH QEMU_ARCH_LM32 78 #elif defined(TARGET_MICROBLAZE) 79 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE 80 #elif defined(TARGET_MIPS) 81 #define QEMU_ARCH QEMU_ARCH_MIPS 82 #elif defined(TARGET_PPC) 83 #define QEMU_ARCH QEMU_ARCH_PPC 84 #elif defined(TARGET_S390X) 85 #define QEMU_ARCH QEMU_ARCH_S390X 86 #elif defined(TARGET_SH4) 87 #define QEMU_ARCH QEMU_ARCH_SH4 88 #elif defined(TARGET_SPARC) 89 #define QEMU_ARCH QEMU_ARCH_SPARC 90 #elif defined(TARGET_XTENSA) 91 #define QEMU_ARCH QEMU_ARCH_XTENSA 92 #endif 93 94 const uint32_t arch_type = QEMU_ARCH; 95 96 /***********************************************************/ 97 /* ram save/restore */ 98 99 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */ 100 #define RAM_SAVE_FLAG_COMPRESS 0x02 101 #define RAM_SAVE_FLAG_MEM_SIZE 0x04 102 #define RAM_SAVE_FLAG_PAGE 0x08 103 #define RAM_SAVE_FLAG_EOS 0x10 104 #define RAM_SAVE_FLAG_CONTINUE 0x20 105 106 #ifdef __ALTIVEC__ 107 #include <altivec.h> 108 #define VECTYPE vector unsigned char 109 #define SPLAT(p) vec_splat(vec_ld(0, p), 0) 110 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2) 111 /* altivec.h may redefine the bool macro as vector type. 112 * Reset it to POSIX semantics. */ 113 #undef bool 114 #define bool _Bool 115 #elif defined __SSE2__ 116 #include <emmintrin.h> 117 #define VECTYPE __m128i 118 #define SPLAT(p) _mm_set1_epi8(*(p)) 119 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF) 120 #else 121 #define VECTYPE unsigned long 122 #define SPLAT(p) (*(p) * (~0UL / 255)) 123 #define ALL_EQ(v1, v2) ((v1) == (v2)) 124 #endif 125 126 127 static struct defconfig_file { 128 const char *filename; 129 /* Indicates it is an user config file (disabled by -no-user-config) */ 130 bool userconfig; 131 } default_config_files[] = { 132 { CONFIG_QEMU_DATADIR "/cpus-" TARGET_ARCH ".conf", false }, 133 { CONFIG_QEMU_CONFDIR "/qemu.conf", true }, 134 { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true }, 135 { NULL }, /* end of list */ 136 }; 137 138 139 int qemu_read_default_config_files(bool userconfig) 140 { 141 int ret; 142 struct defconfig_file *f; 143 144 for (f = default_config_files; f->filename; f++) { 145 if (!userconfig && f->userconfig) { 146 continue; 147 } 148 ret = qemu_read_config_file(f->filename); 149 if (ret < 0 && ret != -ENOENT) { 150 return ret; 151 } 152 } 153 154 return 0; 155 } 156 157 static int is_dup_page(uint8_t *page) 158 { 159 VECTYPE *p = (VECTYPE *)page; 160 VECTYPE val = SPLAT(page); 161 int i; 162 163 for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) { 164 if (!ALL_EQ(val, p[i])) { 165 return 0; 166 } 167 } 168 169 return 1; 170 } 171 172 static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset, 173 int cont, int flag) 174 { 175 qemu_put_be64(f, offset | cont | flag); 176 if (!cont) { 177 qemu_put_byte(f, strlen(block->idstr)); 178 qemu_put_buffer(f, (uint8_t *)block->idstr, 179 strlen(block->idstr)); 180 } 181 182 } 183 184 static RAMBlock *last_block; 185 static ram_addr_t last_offset; 186 187 static int ram_save_block(QEMUFile *f) 188 { 189 RAMBlock *block = last_block; 190 ram_addr_t offset = last_offset; 191 int bytes_sent = 0; 192 MemoryRegion *mr; 193 194 if (!block) 195 block = QLIST_FIRST(&ram_list.blocks); 196 197 do { 198 mr = block->mr; 199 if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE, 200 DIRTY_MEMORY_MIGRATION)) { 201 uint8_t *p; 202 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0; 203 204 memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE, 205 DIRTY_MEMORY_MIGRATION); 206 207 p = memory_region_get_ram_ptr(mr) + offset; 208 209 if (is_dup_page(p)) { 210 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS); 211 qemu_put_byte(f, *p); 212 bytes_sent = 1; 213 } else { 214 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE); 215 qemu_put_buffer(f, p, TARGET_PAGE_SIZE); 216 bytes_sent = TARGET_PAGE_SIZE; 217 } 218 219 break; 220 } 221 222 offset += TARGET_PAGE_SIZE; 223 if (offset >= block->length) { 224 offset = 0; 225 block = QLIST_NEXT(block, next); 226 if (!block) 227 block = QLIST_FIRST(&ram_list.blocks); 228 } 229 } while (block != last_block || offset != last_offset); 230 231 last_block = block; 232 last_offset = offset; 233 234 return bytes_sent; 235 } 236 237 static uint64_t bytes_transferred; 238 239 static ram_addr_t ram_save_remaining(void) 240 { 241 RAMBlock *block; 242 ram_addr_t count = 0; 243 244 QLIST_FOREACH(block, &ram_list.blocks, next) { 245 ram_addr_t addr; 246 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) { 247 if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE, 248 DIRTY_MEMORY_MIGRATION)) { 249 count++; 250 } 251 } 252 } 253 254 return count; 255 } 256 257 uint64_t ram_bytes_remaining(void) 258 { 259 return ram_save_remaining() * TARGET_PAGE_SIZE; 260 } 261 262 uint64_t ram_bytes_transferred(void) 263 { 264 return bytes_transferred; 265 } 266 267 uint64_t ram_bytes_total(void) 268 { 269 RAMBlock *block; 270 uint64_t total = 0; 271 272 QLIST_FOREACH(block, &ram_list.blocks, next) 273 total += block->length; 274 275 return total; 276 } 277 278 static int block_compar(const void *a, const void *b) 279 { 280 RAMBlock * const *ablock = a; 281 RAMBlock * const *bblock = b; 282 283 return strcmp((*ablock)->idstr, (*bblock)->idstr); 284 } 285 286 static void sort_ram_list(void) 287 { 288 RAMBlock *block, *nblock, **blocks; 289 int n; 290 n = 0; 291 QLIST_FOREACH(block, &ram_list.blocks, next) { 292 ++n; 293 } 294 blocks = g_malloc(n * sizeof *blocks); 295 n = 0; 296 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) { 297 blocks[n++] = block; 298 QLIST_REMOVE(block, next); 299 } 300 qsort(blocks, n, sizeof *blocks, block_compar); 301 while (--n >= 0) { 302 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next); 303 } 304 g_free(blocks); 305 } 306 307 static void migration_end(void) 308 { 309 memory_global_dirty_log_stop(); 310 } 311 312 #define MAX_WAIT 50 /* ms, half buffered_file limit */ 313 314 int ram_save_live(QEMUFile *f, int stage, void *opaque) 315 { 316 ram_addr_t addr; 317 uint64_t bytes_transferred_last; 318 double bwidth = 0; 319 int ret; 320 int i; 321 322 if (stage < 0) { 323 migration_end(); 324 return 0; 325 } 326 327 memory_global_sync_dirty_bitmap(get_system_memory()); 328 329 if (stage == 1) { 330 RAMBlock *block; 331 bytes_transferred = 0; 332 last_block = NULL; 333 last_offset = 0; 334 sort_ram_list(); 335 336 /* Make sure all dirty bits are set */ 337 QLIST_FOREACH(block, &ram_list.blocks, next) { 338 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) { 339 if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE, 340 DIRTY_MEMORY_MIGRATION)) { 341 memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE); 342 } 343 } 344 } 345 346 memory_global_dirty_log_start(); 347 348 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE); 349 350 QLIST_FOREACH(block, &ram_list.blocks, next) { 351 qemu_put_byte(f, strlen(block->idstr)); 352 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr)); 353 qemu_put_be64(f, block->length); 354 } 355 } 356 357 bytes_transferred_last = bytes_transferred; 358 bwidth = qemu_get_clock_ns(rt_clock); 359 360 i = 0; 361 while ((ret = qemu_file_rate_limit(f)) == 0) { 362 int bytes_sent; 363 364 bytes_sent = ram_save_block(f); 365 bytes_transferred += bytes_sent; 366 if (bytes_sent == 0) { /* no more blocks */ 367 break; 368 } 369 /* we want to check in the 1st loop, just in case it was the 1st time 370 and we had to sync the dirty bitmap. 371 qemu_get_clock_ns() is a bit expensive, so we only check each some 372 iterations 373 */ 374 if ((i & 63) == 0) { 375 uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000; 376 if (t1 > MAX_WAIT) { 377 DPRINTF("big wait: " PRIu64 " milliseconds, %d iterations\n", 378 t1, i); 379 break; 380 } 381 } 382 i++; 383 } 384 385 if (ret < 0) { 386 return ret; 387 } 388 389 bwidth = qemu_get_clock_ns(rt_clock) - bwidth; 390 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth; 391 392 /* if we haven't transferred anything this round, force expected_time to a 393 * a very high value, but without crashing */ 394 if (bwidth == 0) { 395 bwidth = 0.000001; 396 } 397 398 /* try transferring iterative blocks of memory */ 399 if (stage == 3) { 400 int bytes_sent; 401 402 /* flush all remaining blocks regardless of rate limiting */ 403 while ((bytes_sent = ram_save_block(f)) != 0) { 404 bytes_transferred += bytes_sent; 405 } 406 memory_global_dirty_log_stop(); 407 } 408 409 qemu_put_be64(f, RAM_SAVE_FLAG_EOS); 410 411 if (stage == 2) { 412 uint64_t expected_time; 413 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth; 414 415 DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n", 416 expected_time, migrate_max_downtime()); 417 418 return expected_time <= migrate_max_downtime(); 419 } 420 return 0; 421 } 422 423 static inline void *host_from_stream_offset(QEMUFile *f, 424 ram_addr_t offset, 425 int flags) 426 { 427 static RAMBlock *block = NULL; 428 char id[256]; 429 uint8_t len; 430 431 if (flags & RAM_SAVE_FLAG_CONTINUE) { 432 if (!block) { 433 fprintf(stderr, "Ack, bad migration stream!\n"); 434 return NULL; 435 } 436 437 return memory_region_get_ram_ptr(block->mr) + offset; 438 } 439 440 len = qemu_get_byte(f); 441 qemu_get_buffer(f, (uint8_t *)id, len); 442 id[len] = 0; 443 444 QLIST_FOREACH(block, &ram_list.blocks, next) { 445 if (!strncmp(id, block->idstr, sizeof(id))) 446 return memory_region_get_ram_ptr(block->mr) + offset; 447 } 448 449 fprintf(stderr, "Can't find block %s!\n", id); 450 return NULL; 451 } 452 453 int ram_load(QEMUFile *f, void *opaque, int version_id) 454 { 455 ram_addr_t addr; 456 int flags, ret = 0; 457 int error; 458 static uint64_t seq_iter; 459 460 seq_iter++; 461 462 if (version_id < 4 || version_id > 4) { 463 return -EINVAL; 464 } 465 466 do { 467 addr = qemu_get_be64(f); 468 469 flags = addr & ~TARGET_PAGE_MASK; 470 addr &= TARGET_PAGE_MASK; 471 472 if (flags & RAM_SAVE_FLAG_MEM_SIZE) { 473 if (version_id == 4) { 474 /* Synchronize RAM block list */ 475 char id[256]; 476 ram_addr_t length; 477 ram_addr_t total_ram_bytes = addr; 478 479 while (total_ram_bytes) { 480 RAMBlock *block; 481 uint8_t len; 482 483 len = qemu_get_byte(f); 484 qemu_get_buffer(f, (uint8_t *)id, len); 485 id[len] = 0; 486 length = qemu_get_be64(f); 487 488 QLIST_FOREACH(block, &ram_list.blocks, next) { 489 if (!strncmp(id, block->idstr, sizeof(id))) { 490 if (block->length != length) { 491 ret = -EINVAL; 492 goto done; 493 } 494 break; 495 } 496 } 497 498 if (!block) { 499 fprintf(stderr, "Unknown ramblock \"%s\", cannot " 500 "accept migration\n", id); 501 ret = -EINVAL; 502 goto done; 503 } 504 505 total_ram_bytes -= length; 506 } 507 } 508 } 509 510 if (flags & RAM_SAVE_FLAG_COMPRESS) { 511 void *host; 512 uint8_t ch; 513 514 host = host_from_stream_offset(f, addr, flags); 515 if (!host) { 516 return -EINVAL; 517 } 518 519 ch = qemu_get_byte(f); 520 memset(host, ch, TARGET_PAGE_SIZE); 521 #ifndef _WIN32 522 if (ch == 0 && 523 (!kvm_enabled() || kvm_has_sync_mmu())) { 524 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED); 525 } 526 #endif 527 } else if (flags & RAM_SAVE_FLAG_PAGE) { 528 void *host; 529 530 host = host_from_stream_offset(f, addr, flags); 531 if (!host) { 532 return -EINVAL; 533 } 534 535 qemu_get_buffer(f, host, TARGET_PAGE_SIZE); 536 } 537 error = qemu_file_get_error(f); 538 if (error) { 539 ret = error; 540 goto done; 541 } 542 } while (!(flags & RAM_SAVE_FLAG_EOS)); 543 544 done: 545 DPRINTF("Completed load of VM with exit code %d seq iteration " PRIu64 "\n", 546 ret, seq_iter); 547 return ret; 548 } 549 550 #ifdef HAS_AUDIO 551 struct soundhw { 552 const char *name; 553 const char *descr; 554 int enabled; 555 int isa; 556 union { 557 int (*init_isa) (ISABus *bus); 558 int (*init_pci) (PCIBus *bus); 559 } init; 560 }; 561 562 static struct soundhw soundhw[] = { 563 #ifdef HAS_AUDIO_CHOICE 564 #ifdef CONFIG_PCSPK 565 { 566 "pcspk", 567 "PC speaker", 568 0, 569 1, 570 { .init_isa = pcspk_audio_init } 571 }, 572 #endif 573 574 #ifdef CONFIG_SB16 575 { 576 "sb16", 577 "Creative Sound Blaster 16", 578 0, 579 1, 580 { .init_isa = SB16_init } 581 }, 582 #endif 583 584 #ifdef CONFIG_CS4231A 585 { 586 "cs4231a", 587 "CS4231A", 588 0, 589 1, 590 { .init_isa = cs4231a_init } 591 }, 592 #endif 593 594 #ifdef CONFIG_ADLIB 595 { 596 "adlib", 597 #ifdef HAS_YMF262 598 "Yamaha YMF262 (OPL3)", 599 #else 600 "Yamaha YM3812 (OPL2)", 601 #endif 602 0, 603 1, 604 { .init_isa = Adlib_init } 605 }, 606 #endif 607 608 #ifdef CONFIG_GUS 609 { 610 "gus", 611 "Gravis Ultrasound GF1", 612 0, 613 1, 614 { .init_isa = GUS_init } 615 }, 616 #endif 617 618 #ifdef CONFIG_AC97 619 { 620 "ac97", 621 "Intel 82801AA AC97 Audio", 622 0, 623 0, 624 { .init_pci = ac97_init } 625 }, 626 #endif 627 628 #ifdef CONFIG_ES1370 629 { 630 "es1370", 631 "ENSONIQ AudioPCI ES1370", 632 0, 633 0, 634 { .init_pci = es1370_init } 635 }, 636 #endif 637 638 #ifdef CONFIG_HDA 639 { 640 "hda", 641 "Intel HD Audio", 642 0, 643 0, 644 { .init_pci = intel_hda_and_codec_init } 645 }, 646 #endif 647 648 #endif /* HAS_AUDIO_CHOICE */ 649 650 { NULL, NULL, 0, 0, { NULL } } 651 }; 652 653 void select_soundhw(const char *optarg) 654 { 655 struct soundhw *c; 656 657 if (*optarg == '?') { 658 show_valid_cards: 659 660 printf("Valid sound card names (comma separated):\n"); 661 for (c = soundhw; c->name; ++c) { 662 printf ("%-11s %s\n", c->name, c->descr); 663 } 664 printf("\n-soundhw all will enable all of the above\n"); 665 exit(*optarg != '?'); 666 } 667 else { 668 size_t l; 669 const char *p; 670 char *e; 671 int bad_card = 0; 672 673 if (!strcmp(optarg, "all")) { 674 for (c = soundhw; c->name; ++c) { 675 c->enabled = 1; 676 } 677 return; 678 } 679 680 p = optarg; 681 while (*p) { 682 e = strchr(p, ','); 683 l = !e ? strlen(p) : (size_t) (e - p); 684 685 for (c = soundhw; c->name; ++c) { 686 if (!strncmp(c->name, p, l) && !c->name[l]) { 687 c->enabled = 1; 688 break; 689 } 690 } 691 692 if (!c->name) { 693 if (l > 80) { 694 fprintf(stderr, 695 "Unknown sound card name (too big to show)\n"); 696 } 697 else { 698 fprintf(stderr, "Unknown sound card name `%.*s'\n", 699 (int) l, p); 700 } 701 bad_card = 1; 702 } 703 p += l + (e != NULL); 704 } 705 706 if (bad_card) { 707 goto show_valid_cards; 708 } 709 } 710 } 711 712 void audio_init(ISABus *isa_bus, PCIBus *pci_bus) 713 { 714 struct soundhw *c; 715 716 for (c = soundhw; c->name; ++c) { 717 if (c->enabled) { 718 if (c->isa) { 719 if (isa_bus) { 720 c->init.init_isa(isa_bus); 721 } 722 } else { 723 if (pci_bus) { 724 c->init.init_pci(pci_bus); 725 } 726 } 727 } 728 } 729 } 730 #else 731 void select_soundhw(const char *optarg) 732 { 733 } 734 void audio_init(ISABus *isa_bus, PCIBus *pci_bus) 735 { 736 } 737 #endif 738 739 int qemu_uuid_parse(const char *str, uint8_t *uuid) 740 { 741 int ret; 742 743 if (strlen(str) != 36) { 744 return -1; 745 } 746 747 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3], 748 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9], 749 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], 750 &uuid[15]); 751 752 if (ret != 16) { 753 return -1; 754 } 755 #ifdef TARGET_I386 756 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid); 757 #endif 758 return 0; 759 } 760 761 void do_acpitable_option(const char *optarg) 762 { 763 #ifdef TARGET_I386 764 if (acpi_table_add(optarg) < 0) { 765 fprintf(stderr, "Wrong acpi table provided\n"); 766 exit(1); 767 } 768 #endif 769 } 770 771 void do_smbios_option(const char *optarg) 772 { 773 #ifdef TARGET_I386 774 if (smbios_entry_add(optarg) < 0) { 775 fprintf(stderr, "Wrong smbios provided\n"); 776 exit(1); 777 } 778 #endif 779 } 780 781 void cpudef_init(void) 782 { 783 #if defined(cpudef_setup) 784 cpudef_setup(); /* parse cpu definitions in target config file */ 785 #endif 786 } 787 788 int audio_available(void) 789 { 790 #ifdef HAS_AUDIO 791 return 1; 792 #else 793 return 0; 794 #endif 795 } 796 797 int tcg_available(void) 798 { 799 return 1; 800 } 801 802 int kvm_available(void) 803 { 804 #ifdef CONFIG_KVM 805 return 1; 806 #else 807 return 0; 808 #endif 809 } 810 811 int xen_available(void) 812 { 813 #ifdef CONFIG_XEN 814 return 1; 815 #else 816 return 0; 817 #endif 818 } 819