hw/pc_piix.c

   1 /*
   2  * QEMU PC System Emulator
   3  *
   4  * Copyright (c) 2003-2004 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
  25 #include <glib.h>
  26
  27 #include "hw.h"
  28 #include "pc.h"
  29 #include "apic.h"
  30 #include "pci.h"
  31 #include "net.h"
  32 #include "boards.h"
  33 #include "ide.h"
  34 #include "kvm.h"
  35 #include "kvm/clock.h"
  36 #include "sysemu.h"
  37 #include "sysbus.h"
  38 #include "arch_init.h"
  39 #include "blockdev.h"
  40 #include "smbus.h"
  41 #include "xen.h"
  42 #include "memory.h"
  43 #include "exec-memory.h"
  44 #ifdef CONFIG_XEN
  45 #  include <xen/hvm/hvm_info_table.h>
  46 #endif
  47
  48 #define MAX_IDE_BUS 2
  49
  50 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
  51 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
  52 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
  53
  54 static void kvm_piix3_setup_irq_routing(bool pci_enabled)
  55 {
  56 #ifdef CONFIG_KVM
  57     KVMState *s = kvm_state;
  58     int ret, i;
  59
  60     if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
  61         for (i = 0; i < 8; ++i) {
  62             if (i == 2) {
  63                 continue;
  64             }
  65             kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
  66         }
  67         for (i = 8; i < 16; ++i) {
  68             kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
  69         }
  70         if (pci_enabled) {
  71             for (i = 0; i < 24; ++i) {
  72                 if (i == 0) {
  73                     kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
  74                 } else if (i != 2) {
  75                     kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, i);
  76                 }
  77             }
  78         }
  79         ret = kvm_irqchip_commit_routes(s);
  80         if (ret < 0) {
  81             hw_error("KVM IRQ routing setup failed");
  82         }
  83     }
  84 #endif /* CONFIG_KVM */
  85 }
  86
  87 static void kvm_piix3_gsi_handler(void *opaque, int n, int level)
  88 {
  89     GSIState *s = opaque;
  90
  91     if (n < ISA_NUM_IRQS) {
  92         /* Kernel will forward to both PIC and IOAPIC */
  93         qemu_set_irq(s->i8259_irq[n], level);
  94     } else {
  95         qemu_set_irq(s->ioapic_irq[n], level);
  96     }
  97 }
  98
  99 static void ioapic_init(GSIState *gsi_state)
 100 {
 101     DeviceState *dev;
 102     SysBusDevice *d;
 103     unsigned int i;
 104
 105     if (kvm_irqchip_in_kernel()) {
 106         dev = qdev_create(NULL, "kvm-ioapic");
 107     } else {
 108         dev = qdev_create(NULL, "ioapic");
 109     }
 110     /* FIXME: this should be under the piix3.  */
 111     object_property_add_child(object_resolve_path("i440fx", NULL),
 112                               "ioapic", OBJECT(dev), NULL);
 113     qdev_init_nofail(dev);
 114     d = sysbus_from_qdev(dev);
 115     sysbus_mmio_map(d, 0, 0xfec00000);
 116
 117     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
 118         gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i);
 119     }
 120 }
 121
 122 /* PC hardware initialisation */
 123 static void pc_init1(MemoryRegion *system_memory,
 124                      MemoryRegion *system_io,
 125                      ram_addr_t ram_size,
 126                      const char *boot_device,
 127                      const char *kernel_filename,
 128                      const char *kernel_cmdline,
 129                      const char *initrd_filename,
 130                      const char *cpu_model,
 131                      int pci_enabled,
 132                      int kvmclock_enabled)
 133 {
 134     int i;
 135     ram_addr_t below_4g_mem_size, above_4g_mem_size;
 136     PCIBus *pci_bus;
 137     ISABus *isa_bus;
 138     PCII440FXState *i440fx_state;
 139     int piix3_devfn = -1;
 140     qemu_irq *cpu_irq;
 141     qemu_irq *gsi;
 142     qemu_irq *i8259;
 143     qemu_irq *smi_irq;
 144     GSIState *gsi_state;
 145     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 146     BusState *idebus[MAX_IDE_BUS];
 147     ISADevice *rtc_state;
 148     ISADevice *floppy;
 149     MemoryRegion *ram_memory;
 150     MemoryRegion *pci_memory;
 151     MemoryRegion *rom_memory;
 152
 153     pc_cpus_init(cpu_model);
 154
 155     if (kvmclock_enabled) {
 156         kvmclock_create();
 157     }
 158
 159     if (ram_size >= 0xe0000000 ) {
 160         above_4g_mem_size = ram_size - 0xe0000000;
 161         below_4g_mem_size = 0xe0000000;
 162     } else {
 163         above_4g_mem_size = 0;
 164         below_4g_mem_size = ram_size;
 165     }
 166
 167     if (pci_enabled) {
 168         pci_memory = g_new(MemoryRegion, 1);
 169         memory_region_init(pci_memory, "pci", INT64_MAX);
 170         rom_memory = pci_memory;
 171     } else {
 172         pci_memory = NULL;
 173         rom_memory = system_memory;
 174     }
 175
 176     /* allocate ram and load rom/bios */
 177     if (!xen_enabled()) {
 178         pc_memory_init(system_memory,
 179                        kernel_filename, kernel_cmdline, initrd_filename,
 180                        below_4g_mem_size, above_4g_mem_size,
 181                        pci_enabled ? rom_memory : system_memory, &ram_memory);
 182     }
 183
 184     gsi_state = g_malloc0(sizeof(*gsi_state));
 185     if (kvm_irqchip_in_kernel()) {
 186         kvm_piix3_setup_irq_routing(pci_enabled);
 187         gsi = qemu_allocate_irqs(kvm_piix3_gsi_handler, gsi_state,
 188                                  GSI_NUM_PINS);
 189     } else {
 190         gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 191     }
 192
 193     if (pci_enabled) {
 194         pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
 195                               system_memory, system_io, ram_size,
 196                               below_4g_mem_size,
 197                               0x100000000ULL - below_4g_mem_size,
 198                               0x100000000ULL + above_4g_mem_size,
 199                               (sizeof(target_phys_addr_t) == 4
 200                                ? 0
 201                                : ((uint64_t)1 << 62)),
 202                               pci_memory, ram_memory);
 203     } else {
 204         pci_bus = NULL;
 205         i440fx_state = NULL;
 206         isa_bus = isa_bus_new(NULL, system_io);
 207         no_hpet = 1;
 208     }
 209     isa_bus_irqs(isa_bus, gsi);
 210
 211     if (kvm_irqchip_in_kernel()) {
 212         i8259 = kvm_i8259_init(isa_bus);
 213     } else if (xen_enabled()) {
 214         i8259 = xen_interrupt_controller_init();
 215     } else {
 216         cpu_irq = pc_allocate_cpu_irq();
 217         i8259 = i8259_init(isa_bus, cpu_irq[0]);
 218     }
 219
 220     for (i = 0; i < ISA_NUM_IRQS; i++) {
 221         gsi_state->i8259_irq[i] = i8259[i];
 222     }
 223     if (pci_enabled) {
 224         ioapic_init(gsi_state);
 225     }
 226
 227     pc_register_ferr_irq(gsi[13]);
 228
 229     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 230     if (xen_enabled()) {
 231         pci_create_simple(pci_bus, -1, "xen-platform");
 232     }
 233
 234     /* init basic PC hardware */
 235     pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
 236
 237     for(i = 0; i < nb_nics; i++) {
 238         NICInfo *nd = &nd_table[i];
 239
 240         if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
 241             pc_init_ne2k_isa(isa_bus, nd);
 242         else
 243             pci_nic_init_nofail(nd, "e1000", NULL);
 244     }
 245
 246     ide_drive_get(hd, MAX_IDE_BUS);
 247     if (pci_enabled) {
 248         PCIDevice *dev;
 249         if (xen_enabled()) {
 250             dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
 251         } else {
 252             dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
 253         }
 254         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
 255         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
 256     } else {
 257         for(i = 0; i < MAX_IDE_BUS; i++) {
 258             ISADevice *dev;
 259             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
 260                                ide_irq[i],
 261                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
 262             idebus[i] = qdev_get_child_bus(&dev->qdev, "ide.0");
 263         }
 264     }
 265
 266     audio_init(isa_bus, pci_enabled ? pci_bus : NULL);
 267
 268     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
 269                  floppy, idebus[0], idebus[1], rtc_state);
 270
 271     if (pci_enabled && usb_enabled) {
 272         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
 273     }
 274
 275     if (pci_enabled && acpi_enabled) {
 276         i2c_bus *smbus;
 277
 278         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
 279         /* TODO: Populate SPD eeprom data.  */
 280         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
 281                               gsi[9], *smi_irq,
 282                               kvm_enabled());
 283         smbus_eeprom_init(smbus, 8, NULL, 0);
 284     }
 285
 286     if (pci_enabled) {
 287         pc_pci_device_init(pci_bus);
 288     }
 289 }
 290
 291 static void pc_init_pci(ram_addr_t ram_size,
 292                         const char *boot_device,
 293                         const char *kernel_filename,
 294                         const char *kernel_cmdline,
 295                         const char *initrd_filename,
 296                         const char *cpu_model)
 297 {
 298     pc_init1(get_system_memory(),
 299              get_system_io(),
 300              ram_size, boot_device,
 301              kernel_filename, kernel_cmdline,
 302              initrd_filename, cpu_model, 1, 1);
 303 }
 304
 305 static void pc_init_pci_no_kvmclock(ram_addr_t ram_size,
 306                                     const char *boot_device,
 307                                     const char *kernel_filename,
 308                                     const char *kernel_cmdline,
 309                                     const char *initrd_filename,
 310                                     const char *cpu_model)
 311 {
 312     pc_init1(get_system_memory(),
 313              get_system_io(),
 314              ram_size, boot_device,
 315              kernel_filename, kernel_cmdline,
 316              initrd_filename, cpu_model, 1, 0);
 317 }
 318
 319 static void pc_init_isa(ram_addr_t ram_size,
 320                         const char *boot_device,
 321                         const char *kernel_filename,
 322                         const char *kernel_cmdline,
 323                         const char *initrd_filename,
 324                         const char *cpu_model)
 325 {
 326     if (cpu_model == NULL)
 327         cpu_model = "486";
 328     pc_init1(get_system_memory(),
 329              get_system_io(),
 330              ram_size, boot_device,
 331              kernel_filename, kernel_cmdline,
 332              initrd_filename, cpu_model, 0, 1);
 333 }
 334
 335 #ifdef CONFIG_XEN
 336 static void pc_xen_hvm_init(ram_addr_t ram_size,
 337                             const char *boot_device,
 338                             const char *kernel_filename,
 339                             const char *kernel_cmdline,
 340                             const char *initrd_filename,
 341                             const char *cpu_model)
 342 {
 343     if (xen_hvm_init() != 0) {
 344         hw_error("xen hardware virtual machine initialisation failed");
 345     }
 346     pc_init_pci_no_kvmclock(ram_size, boot_device,
 347                             kernel_filename, kernel_cmdline,
 348                             initrd_filename, cpu_model);
 349     xen_vcpu_init();
 350 }
 351 #endif
 352
 353 static QEMUMachine pc_machine_v1_1 = {
 354     .name = "pc-1.1",
 355     .alias = "pc",
 356     .desc = "Standard PC",
 357     .init = pc_init_pci,
 358     .max_cpus = 255,
 359     .is_default = 1,
 360 };
 361
 362 static QEMUMachine pc_machine_v1_0 = {
 363     .name = "pc-1.0",
 364     .desc = "Standard PC",
 365     .init = pc_init_pci,
 366     .max_cpus = 255,
 367     .compat_props = (GlobalProperty[]) {
 368         {
 369             .driver   = "pc-sysfw",
 370             .property = "rom_only",
 371             .value    = stringify(1),
 372         }, {
 373             .driver   = "isa-fdc",
 374             .property = "check_media_rate",
 375             .value    = "off",
 376         },
 377         { /* end of list */ }
 378     },
 379 };
 380
 381 static QEMUMachine pc_machine_v0_15 = {
 382     .name = "pc-0.15",
 383     .desc = "Standard PC",
 384     .init = pc_init_pci,
 385     .max_cpus = 255,
 386     .compat_props = (GlobalProperty[]) {
 387         {
 388             .driver   = "pc-sysfw",
 389             .property = "rom_only",
 390             .value    = stringify(1),
 391         }, {
 392             .driver   = "isa-fdc",
 393             .property = "check_media_rate",
 394             .value    = "off",
 395         },
 396         { /* end of list */ }
 397     },
 398 };
 399
 400 static QEMUMachine pc_machine_v0_14 = {
 401     .name = "pc-0.14",
 402     .desc = "Standard PC",
 403     .init = pc_init_pci,
 404     .max_cpus = 255,
 405     .compat_props = (GlobalProperty[]) {
 406         {
 407             .driver   = "qxl",
 408             .property = "revision",
 409             .value    = stringify(2),
 410         },{
 411             .driver   = "qxl-vga",
 412             .property = "revision",
 413             .value    = stringify(2),
 414         },{
 415             .driver   = "virtio-blk-pci",
 416             .property = "event_idx",
 417             .value    = "off",
 418         },{
 419             .driver   = "virtio-serial-pci",
 420             .property = "event_idx",
 421             .value    = "off",
 422         },{
 423             .driver   = "virtio-net-pci",
 424             .property = "event_idx",
 425             .value    = "off",
 426         },{
 427             .driver   = "virtio-balloon-pci",
 428             .property = "event_idx",
 429             .value    = "off",
 430         },{
 431             .driver   = "isa-fdc",
 432             .property = "check_media_rate",
 433             .value    = "off",
 434         },
 435         {
 436             .driver   = "pc-sysfw",
 437             .property = "rom_only",
 438             .value    = stringify(1),
 439         },
 440         { /* end of list */ }
 441     },
 442 };
 443
 444 static QEMUMachine pc_machine_v0_13 = {
 445     .name = "pc-0.13",
 446     .desc = "Standard PC",
 447     .init = pc_init_pci_no_kvmclock,
 448     .max_cpus = 255,
 449     .compat_props = (GlobalProperty[]) {
 450         {
 451             .driver   = "virtio-9p-pci",
 452             .property = "vectors",
 453             .value    = stringify(0),
 454         },{
 455             .driver   = "VGA",
 456             .property = "rombar",
 457             .value    = stringify(0),
 458         },{
 459             .driver   = "vmware-svga",
 460             .property = "rombar",
 461             .value    = stringify(0),
 462         },{
 463             .driver   = "PCI",
 464             .property = "command_serr_enable",
 465             .value    = "off",
 466         },{
 467             .driver   = "virtio-blk-pci",
 468             .property = "event_idx",
 469             .value    = "off",
 470         },{
 471             .driver   = "virtio-serial-pci",
 472             .property = "event_idx",
 473             .value    = "off",
 474         },{
 475             .driver   = "virtio-net-pci",
 476             .property = "event_idx",
 477             .value    = "off",
 478         },{
 479             .driver   = "virtio-balloon-pci",
 480             .property = "event_idx",
 481             .value    = "off",
 482         },{
 483             .driver   = "AC97",
 484             .property = "use_broken_id",
 485             .value    = stringify(1),
 486         },{
 487             .driver   = "isa-fdc",
 488             .property = "check_media_rate",
 489             .value    = "off",
 490         },
 491         {
 492             .driver   = "pc-sysfw",
 493             .property = "rom_only",
 494             .value    = stringify(1),
 495         },
 496         { /* end of list */ }
 497     },
 498 };
 499
 500 static QEMUMachine pc_machine_v0_12 = {
 501     .name = "pc-0.12",
 502     .desc = "Standard PC",
 503     .init = pc_init_pci_no_kvmclock,
 504     .max_cpus = 255,
 505     .compat_props = (GlobalProperty[]) {
 506         {
 507             .driver   = "virtio-serial-pci",
 508             .property = "max_ports",
 509             .value    = stringify(1),
 510         },{
 511             .driver   = "virtio-serial-pci",
 512             .property = "vectors",
 513             .value    = stringify(0),
 514         },{
 515             .driver   = "VGA",
 516             .property = "rombar",
 517             .value    = stringify(0),
 518         },{
 519             .driver   = "vmware-svga",
 520             .property = "rombar",
 521             .value    = stringify(0),
 522         },{
 523             .driver   = "PCI",
 524             .property = "command_serr_enable",
 525             .value    = "off",
 526         },{
 527             .driver   = "virtio-blk-pci",
 528             .property = "event_idx",
 529             .value    = "off",
 530         },{
 531             .driver   = "virtio-serial-pci",
 532             .property = "event_idx",
 533             .value    = "off",
 534         },{
 535             .driver   = "virtio-net-pci",
 536             .property = "event_idx",
 537             .value    = "off",
 538         },{
 539             .driver   = "virtio-balloon-pci",
 540             .property = "event_idx",
 541             .value    = "off",
 542         },{
 543             .driver   = "AC97",
 544             .property = "use_broken_id",
 545             .value    = stringify(1),
 546         },{
 547             .driver   = "isa-fdc",
 548             .property = "check_media_rate",
 549             .value    = "off",
 550         },
 551         {
 552             .driver   = "pc-sysfw",
 553             .property = "rom_only",
 554             .value    = stringify(1),
 555         },
 556         { /* end of list */ }
 557     }
 558 };
 559
 560 static QEMUMachine pc_machine_v0_11 = {
 561     .name = "pc-0.11",
 562     .desc = "Standard PC, qemu 0.11",
 563     .init = pc_init_pci_no_kvmclock,
 564     .max_cpus = 255,
 565     .compat_props = (GlobalProperty[]) {
 566         {
 567             .driver   = "virtio-blk-pci",
 568             .property = "vectors",
 569             .value    = stringify(0),
 570         },{
 571             .driver   = "virtio-serial-pci",
 572             .property = "max_ports",
 573             .value    = stringify(1),
 574         },{
 575             .driver   = "virtio-serial-pci",
 576             .property = "vectors",
 577             .value    = stringify(0),
 578         },{
 579             .driver   = "ide-drive",
 580             .property = "ver",
 581             .value    = "0.11",
 582         },{
 583             .driver   = "scsi-disk",
 584             .property = "ver",
 585             .value    = "0.11",
 586         },{
 587             .driver   = "PCI",
 588             .property = "rombar",
 589             .value    = stringify(0),
 590         },{
 591             .driver   = "PCI",
 592             .property = "command_serr_enable",
 593             .value    = "off",
 594         },{
 595             .driver   = "virtio-blk-pci",
 596             .property = "event_idx",
 597             .value    = "off",
 598         },{
 599             .driver   = "virtio-serial-pci",
 600             .property = "event_idx",
 601             .value    = "off",
 602         },{
 603             .driver   = "virtio-net-pci",
 604             .property = "event_idx",
 605             .value    = "off",
 606         },{
 607             .driver   = "virtio-balloon-pci",
 608             .property = "event_idx",
 609             .value    = "off",
 610         },{
 611             .driver   = "AC97",
 612             .property = "use_broken_id",
 613             .value    = stringify(1),
 614         },{
 615             .driver   = "isa-fdc",
 616             .property = "check_media_rate",
 617             .value    = "off",
 618         },
 619         {
 620             .driver   = "pc-sysfw",
 621             .property = "rom_only",
 622             .value    = stringify(1),
 623         },
 624         { /* end of list */ }
 625     }
 626 };
 627
 628 static QEMUMachine pc_machine_v0_10 = {
 629     .name = "pc-0.10",
 630     .desc = "Standard PC, qemu 0.10",
 631     .init = pc_init_pci_no_kvmclock,
 632     .max_cpus = 255,
 633     .compat_props = (GlobalProperty[]) {
 634         {
 635             .driver   = "virtio-blk-pci",
 636             .property = "class",
 637             .value    = stringify(PCI_CLASS_STORAGE_OTHER),
 638         },{
 639             .driver   = "virtio-serial-pci",
 640             .property = "class",
 641             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
 642         },{
 643             .driver   = "virtio-serial-pci",
 644             .property = "max_ports",
 645             .value    = stringify(1),
 646         },{
 647             .driver   = "virtio-serial-pci",
 648             .property = "vectors",
 649             .value    = stringify(0),
 650         },{
 651             .driver   = "virtio-net-pci",
 652             .property = "vectors",
 653             .value    = stringify(0),
 654         },{
 655             .driver   = "virtio-blk-pci",
 656             .property = "vectors",
 657             .value    = stringify(0),
 658         },{
 659             .driver   = "ide-drive",
 660             .property = "ver",
 661             .value    = "0.10",
 662         },{
 663             .driver   = "scsi-disk",
 664             .property = "ver",
 665             .value    = "0.10",
 666         },{
 667             .driver   = "PCI",
 668             .property = "rombar",
 669             .value    = stringify(0),
 670         },{
 671             .driver   = "PCI",
 672             .property = "command_serr_enable",
 673             .value    = "off",
 674         },{
 675             .driver   = "virtio-blk-pci",
 676             .property = "event_idx",
 677             .value    = "off",
 678         },{
 679             .driver   = "virtio-serial-pci",
 680             .property = "event_idx",
 681             .value    = "off",
 682         },{
 683             .driver   = "virtio-net-pci",
 684             .property = "event_idx",
 685             .value    = "off",
 686         },{
 687             .driver   = "virtio-balloon-pci",
 688             .property = "event_idx",
 689             .value    = "off",
 690         },{
 691             .driver   = "AC97",
 692             .property = "use_broken_id",
 693             .value    = stringify(1),
 694         },{
 695             .driver   = "isa-fdc",
 696             .property = "check_media_rate",
 697             .value    = "off",
 698         },
 699         {
 700             .driver   = "pc-sysfw",
 701             .property = "rom_only",
 702             .value    = stringify(1),
 703         },
 704         { /* end of list */ }
 705     },
 706 };
 707
 708 static QEMUMachine isapc_machine = {
 709     .name = "isapc",
 710     .desc = "ISA-only PC",
 711     .init = pc_init_isa,
 712     .max_cpus = 1,
 713     .compat_props = (GlobalProperty[]) {
 714         {
 715             .driver   = "pc-sysfw",
 716             .property = "rom_only",
 717             .value    = stringify(1),
 718         },
 719         { /* end of list */ }
 720     },
 721 };
 722
 723 #ifdef CONFIG_XEN
 724 static QEMUMachine xenfv_machine = {
 725     .name = "xenfv",
 726     .desc = "Xen Fully-virtualized PC",
 727     .init = pc_xen_hvm_init,
 728     .max_cpus = HVM_MAX_VCPUS,
 729     .default_machine_opts = "accel=xen",
 730 };
 731 #endif
 732
 733 static void pc_machine_init(void)
 734 {
 735     qemu_register_machine(&pc_machine_v1_1);
 736     qemu_register_machine(&pc_machine_v1_0);
 737     qemu_register_machine(&pc_machine_v0_15);
 738     qemu_register_machine(&pc_machine_v0_14);
 739     qemu_register_machine(&pc_machine_v0_13);
 740     qemu_register_machine(&pc_machine_v0_12);
 741     qemu_register_machine(&pc_machine_v0_11);
 742     qemu_register_machine(&pc_machine_v0_10);
 743     qemu_register_machine(&isapc_machine);
 744 #ifdef CONFIG_XEN
 745     qemu_register_machine(&xenfv_machine);
 746 #endif
 747 }
 748
 749 machine_init(pc_machine_init);