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 "pci_ids.h"
  32 #include "usb.h"
  33 #include "net.h"
  34 #include "boards.h"
  35 #include "ide.h"
  36 #include "kvm.h"
  37 #include "kvm/clock.h"
  38 #include "sysemu.h"
  39 #include "sysbus.h"
  40 #include "arch_init.h"
  41 #include "blockdev.h"
  42 #include "smbus.h"
  43 #include "xen.h"
  44 #include "memory.h"
  45 #include "exec-memory.h"
  46 #ifdef CONFIG_XEN
  47 #  include <xen/hvm/hvm_info_table.h>
  48 #endif
  49
  50 #define MAX_IDE_BUS 2
  51
  52 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
  53 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
  54 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
  55
  56 static void kvm_piix3_setup_irq_routing(bool pci_enabled)
  57 {
  58 #ifdef CONFIG_KVM
  59     KVMState *s = kvm_state;
  60     int i;
  61
  62     if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
  63         for (i = 0; i < 8; ++i) {
  64             if (i == 2) {
  65                 continue;
  66             }
  67             kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);
  68         }
  69         for (i = 8; i < 16; ++i) {
  70             kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
  71         }
  72         if (pci_enabled) {
  73             for (i = 0; i < 24; ++i) {
  74                 if (i == 0) {
  75                     kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
  76                 } else if (i != 2) {
  77                     kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, i);
  78                 }
  79             }
  80         }
  81     }
  82 #endif /* CONFIG_KVM */
  83 }
  84
  85 static void kvm_piix3_gsi_handler(void *opaque, int n, int level)
  86 {
  87     GSIState *s = opaque;
  88
  89     if (n < ISA_NUM_IRQS) {
  90         /* Kernel will forward to both PIC and IOAPIC */
  91         qemu_set_irq(s->i8259_irq[n], level);
  92     } else {
  93         qemu_set_irq(s->ioapic_irq[n], level);
  94     }
  95 }
  96
  97 static void ioapic_init(GSIState *gsi_state)
  98 {
  99     DeviceState *dev;
 100     SysBusDevice *d;
 101     unsigned int i;
 102
 103     if (kvm_irqchip_in_kernel()) {
 104         dev = qdev_create(NULL, "kvm-ioapic");
 105     } else {
 106         dev = qdev_create(NULL, "ioapic");
 107     }
 108     /* FIXME: this should be under the piix3.  */
 109     object_property_add_child(object_resolve_path("i440fx", NULL),
 110                               "ioapic", OBJECT(dev), NULL);
 111     qdev_init_nofail(dev);
 112     d = sysbus_from_qdev(dev);
 113     sysbus_mmio_map(d, 0, 0xfec00000);
 114
 115     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
 116         gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i);
 117     }
 118 }
 119
 120 /* PC hardware initialisation */
 121 static void pc_init1(MemoryRegion *system_memory,
 122                      MemoryRegion *system_io,
 123                      ram_addr_t ram_size,
 124                      const char *boot_device,
 125                      const char *kernel_filename,
 126                      const char *kernel_cmdline,
 127                      const char *initrd_filename,
 128                      const char *cpu_model,
 129                      int pci_enabled,
 130                      int kvmclock_enabled)
 131 {
 132     int i;
 133     ram_addr_t below_4g_mem_size, above_4g_mem_size;
 134     PCIBus *pci_bus;
 135     ISABus *isa_bus;
 136     PCII440FXState *i440fx_state;
 137     int piix3_devfn = -1;
 138     qemu_irq *cpu_irq;
 139     qemu_irq *gsi;
 140     qemu_irq *i8259;
 141     qemu_irq *smi_irq;
 142     GSIState *gsi_state;
 143     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 144     BusState *idebus[MAX_IDE_BUS];
 145     ISADevice *rtc_state;
 146     ISADevice *floppy;
 147     MemoryRegion *ram_memory;
 148     MemoryRegion *pci_memory;
 149     MemoryRegion *rom_memory;
 150     void *fw_cfg = NULL;
 151
 152     pc_cpus_init(cpu_model);
 153
 154     if (kvmclock_enabled) {
 155         kvmclock_create();
 156     }
 157
 158     if (ram_size >= 0xe0000000 ) {
 159         above_4g_mem_size = ram_size - 0xe0000000;
 160         below_4g_mem_size = 0xe0000000;
 161     } else {
 162         above_4g_mem_size = 0;
 163         below_4g_mem_size = ram_size;
 164     }
 165
 166     if (pci_enabled) {
 167         pci_memory = g_new(MemoryRegion, 1);
 168         memory_region_init(pci_memory, "pci", INT64_MAX);
 169         rom_memory = pci_memory;
 170     } else {
 171         pci_memory = NULL;
 172         rom_memory = system_memory;
 173     }
 174
 175     /* allocate ram and load rom/bios */
 176     if (!xen_enabled()) {
 177         fw_cfg = pc_memory_init(system_memory,
 178                        kernel_filename, kernel_cmdline, initrd_filename,
 179                        below_4g_mem_size, above_4g_mem_size,
 180                        pci_enabled ? rom_memory : system_memory, &ram_memory);
 181     }
 182
 183     gsi_state = g_malloc0(sizeof(*gsi_state));
 184     if (kvm_irqchip_in_kernel()) {
 185         kvm_piix3_setup_irq_routing(pci_enabled);
 186         gsi = qemu_allocate_irqs(kvm_piix3_gsi_handler, gsi_state,
 187                                  GSI_NUM_PINS);
 188     } else {
 189         gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 190     }
 191
 192     if (pci_enabled) {
 193         pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
 194                               system_memory, system_io, ram_size,
 195                               below_4g_mem_size,
 196                               0x100000000ULL - below_4g_mem_size,
 197                               0x100000000ULL + above_4g_mem_size,
 198                               (sizeof(target_phys_addr_t) == 4
 199                                ? 0
 200                                : ((uint64_t)1 << 62)),
 201                               pci_memory, ram_memory);
 202     } else {
 203         pci_bus = NULL;
 204         i440fx_state = NULL;
 205         isa_bus = isa_bus_new(NULL, system_io);
 206         no_hpet = 1;
 207     }
 208     isa_bus_irqs(isa_bus, gsi);
 209
 210     if (kvm_irqchip_in_kernel()) {
 211         i8259 = kvm_i8259_init(isa_bus);
 212     } else if (xen_enabled()) {
 213         i8259 = xen_interrupt_controller_init();
 214     } else {
 215         cpu_irq = pc_allocate_cpu_irq();
 216         i8259 = i8259_init(isa_bus, cpu_irq[0]);
 217     }
 218
 219     for (i = 0; i < ISA_NUM_IRQS; i++) {
 220         gsi_state->i8259_irq[i] = i8259[i];
 221     }
 222     if (pci_enabled) {
 223         ioapic_init(gsi_state);
 224     }
 225
 226     pc_register_ferr_irq(gsi[13]);
 227
 228     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 229     if (xen_enabled()) {
 230         pci_create_simple(pci_bus, -1, "xen-platform");
 231     }
 232
 233     /* init basic PC hardware */
 234     pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
 235
 236     for(i = 0; i < nb_nics; i++) {
 237         NICInfo *nd = &nd_table[i];
 238
 239         if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
 240             pc_init_ne2k_isa(isa_bus, nd);
 241         else
 242             pci_nic_init_nofail(nd, "e1000", NULL);
 243     }
 244
 245     ide_drive_get(hd, MAX_IDE_BUS);
 246     if (pci_enabled) {
 247         PCIDevice *dev;
 248         if (xen_enabled()) {
 249             dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
 250         } else {
 251             dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
 252         }
 253         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
 254         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
 255     } else {
 256         for(i = 0; i < MAX_IDE_BUS; i++) {
 257             ISADevice *dev;
 258             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
 259                                ide_irq[i],
 260                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
 261             idebus[i] = qdev_get_child_bus(&dev->qdev, "ide.0");
 262         }
 263     }
 264
 265     audio_init(isa_bus, pci_enabled ? pci_bus : NULL);
 266
 267     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
 268                  floppy, idebus[0], idebus[1], rtc_state);
 269
 270     if (pci_enabled && usb_enabled) {
 271         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
 272     }
 273
 274     if (pci_enabled && acpi_enabled) {
 275         i2c_bus *smbus;
 276
 277         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
 278         /* TODO: Populate SPD eeprom data.  */
 279         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
 280                               gsi[9], *smi_irq,
 281                               kvm_enabled(), fw_cfg);
 282         smbus_eeprom_init(smbus, 8, NULL, 0);
 283     }
 284
 285     if (pci_enabled) {
 286         pc_pci_device_init(pci_bus);
 287     }
 288 }
 289
 290 static void pc_init_pci(ram_addr_t ram_size,
 291                         const char *boot_device,
 292                         const char *kernel_filename,
 293                         const char *kernel_cmdline,
 294                         const char *initrd_filename,
 295                         const char *cpu_model)
 296 {
 297     pc_init1(get_system_memory(),
 298              get_system_io(),
 299              ram_size, boot_device,
 300              kernel_filename, kernel_cmdline,
 301              initrd_filename, cpu_model, 1, 1);
 302 }
 303
 304 static void pc_init_pci_no_kvmclock(ram_addr_t ram_size,
 305                                     const char *boot_device,
 306                                     const char *kernel_filename,
 307                                     const char *kernel_cmdline,
 308                                     const char *initrd_filename,
 309                                     const char *cpu_model)
 310 {
 311     pc_init1(get_system_memory(),
 312              get_system_io(),
 313              ram_size, boot_device,
 314              kernel_filename, kernel_cmdline,
 315              initrd_filename, cpu_model, 1, 0);
 316 }
 317
 318 static void pc_init_isa(ram_addr_t ram_size,
 319                         const char *boot_device,
 320                         const char *kernel_filename,
 321                         const char *kernel_cmdline,
 322                         const char *initrd_filename,
 323                         const char *cpu_model)
 324 {
 325     if (cpu_model == NULL)
 326         cpu_model = "486";
 327     pc_init1(get_system_memory(),
 328              get_system_io(),
 329              ram_size, boot_device,
 330              kernel_filename, kernel_cmdline,
 331              initrd_filename, cpu_model, 0, 1);
 332 }
 333
 334 #ifdef CONFIG_XEN
 335 static void pc_xen_hvm_init(ram_addr_t ram_size,
 336                             const char *boot_device,
 337                             const char *kernel_filename,
 338                             const char *kernel_cmdline,
 339                             const char *initrd_filename,
 340                             const char *cpu_model)
 341 {
 342     if (xen_hvm_init() != 0) {
 343         hw_error("xen hardware virtual machine initialisation failed");
 344     }
 345     pc_init_pci_no_kvmclock(ram_size, boot_device,
 346                             kernel_filename, kernel_cmdline,
 347                             initrd_filename, cpu_model);
 348     xen_vcpu_init();
 349 }
 350 #endif
 351
 352 static QEMUMachine pc_machine_v1_2 = {
 353     .name = "pc-1.2",
 354     .alias = "pc",
 355     .desc = "Standard PC",
 356     .init = pc_init_pci,
 357     .max_cpus = 255,
 358     .is_default = 1,
 359 };
 360
 361 #define PC_COMPAT_1_1 \
 362         {\
 363             .driver   = "virtio-scsi-pci",\
 364             .property = "hotplug",\
 365             .value    = "off",\
 366         },{\
 367             .driver   = "virtio-scsi-pci",\
 368             .property = "param_change",\
 369             .value    = "off",\
 370         },{\
 371             .driver   = "VGA",\
 372             .property = "vgamem_mb",\
 373             .value    = stringify(8),\
 374         },{\
 375             .driver   = "vmware-svga",\
 376             .property = "vgamem_mb",\
 377             .value    = stringify(8),\
 378         },{\
 379             .driver   = "qxl-vga",\
 380             .property = "vgamem_mb",\
 381             .value    = stringify(8),\
 382         },{\
 383             .driver   = "qxl",\
 384             .property = "vgamem_mb",\
 385             .value    = stringify(8),\
 386         },{\
 387             .driver   = "virtio-blk-pci",\
 388             .property = "config-wce",\
 389             .value    = "off",\
 390         }
 391
 392 static QEMUMachine pc_machine_v1_1 = {
 393     .name = "pc-1.1",
 394     .desc = "Standard PC",
 395     .init = pc_init_pci,
 396     .max_cpus = 255,
 397     .compat_props = (GlobalProperty[]) {
 398         PC_COMPAT_1_1,
 399         { /* end of list */ }
 400     },
 401 };
 402
 403 #define PC_COMPAT_1_0 \
 404         PC_COMPAT_1_1,\
 405         {\
 406             .driver   = "pc-sysfw",\
 407             .property = "rom_only",\
 408             .value    = stringify(1),\
 409         }, {\
 410             .driver   = "isa-fdc",\
 411             .property = "check_media_rate",\
 412             .value    = "off",\
 413         }, {\
 414             .driver   = "virtio-balloon-pci",\
 415             .property = "class",\
 416             .value    = stringify(PCI_CLASS_MEMORY_RAM),\
 417         },{\
 418             .driver   = "apic",\
 419             .property = "vapic",\
 420             .value    = "off",\
 421         },{\
 422             .driver   = TYPE_USB_DEVICE,\
 423             .property = "full-path",\
 424             .value    = "no",\
 425         }
 426
 427 static QEMUMachine pc_machine_v1_0 = {
 428     .name = "pc-1.0",
 429     .desc = "Standard PC",
 430     .init = pc_init_pci,
 431     .max_cpus = 255,
 432     .compat_props = (GlobalProperty[]) {
 433         PC_COMPAT_1_0,
 434         { /* end of list */ }
 435     },
 436     .hw_version = "1.0",
 437 };
 438
 439 #define PC_COMPAT_0_15 \
 440         PC_COMPAT_1_0
 441
 442 static QEMUMachine pc_machine_v0_15 = {
 443     .name = "pc-0.15",
 444     .desc = "Standard PC",
 445     .init = pc_init_pci,
 446     .max_cpus = 255,
 447     .compat_props = (GlobalProperty[]) {
 448         PC_COMPAT_0_15,
 449         { /* end of list */ }
 450     },
 451     .hw_version = "0.15",
 452 };
 453
 454 #define PC_COMPAT_0_14 \
 455         PC_COMPAT_0_15,\
 456         {\
 457             .driver   = "virtio-blk-pci",\
 458             .property = "event_idx",\
 459             .value    = "off",\
 460         },{\
 461             .driver   = "virtio-serial-pci",\
 462             .property = "event_idx",\
 463             .value    = "off",\
 464         },{\
 465             .driver   = "virtio-net-pci",\
 466             .property = "event_idx",\
 467             .value    = "off",\
 468         },{\
 469             .driver   = "virtio-balloon-pci",\
 470             .property = "event_idx",\
 471             .value    = "off",\
 472         }
 473
 474 static QEMUMachine pc_machine_v0_14 = {
 475     .name = "pc-0.14",
 476     .desc = "Standard PC",
 477     .init = pc_init_pci,
 478     .max_cpus = 255,
 479     .compat_props = (GlobalProperty[]) {
 480         PC_COMPAT_0_14,
 481         {
 482             .driver   = "qxl",
 483             .property = "revision",
 484             .value    = stringify(2),
 485         },{
 486             .driver   = "qxl-vga",
 487             .property = "revision",
 488             .value    = stringify(2),
 489         },
 490         { /* end of list */ }
 491     },
 492     .hw_version = "0.14",
 493 };
 494
 495 #define PC_COMPAT_0_13 \
 496         PC_COMPAT_0_14,\
 497         {\
 498             .driver   = TYPE_PCI_DEVICE,\
 499             .property = "command_serr_enable",\
 500             .value    = "off",\
 501         },{\
 502             .driver   = "AC97",\
 503             .property = "use_broken_id",\
 504             .value    = stringify(1),\
 505         }
 506
 507 static QEMUMachine pc_machine_v0_13 = {
 508     .name = "pc-0.13",
 509     .desc = "Standard PC",
 510     .init = pc_init_pci_no_kvmclock,
 511     .max_cpus = 255,
 512     .compat_props = (GlobalProperty[]) {
 513         PC_COMPAT_0_13,
 514         {
 515             .driver   = "virtio-9p-pci",
 516             .property = "vectors",
 517             .value    = stringify(0),
 518         },{
 519             .driver   = "VGA",
 520             .property = "rombar",
 521             .value    = stringify(0),
 522         },{
 523             .driver   = "vmware-svga",
 524             .property = "rombar",
 525             .value    = stringify(0),
 526         },
 527         { /* end of list */ }
 528     },
 529     .hw_version = "0.13",
 530 };
 531
 532 #define PC_COMPAT_0_12 \
 533         PC_COMPAT_0_13,\
 534         {\
 535             .driver   = "virtio-serial-pci",\
 536             .property = "max_ports",\
 537             .value    = stringify(1),\
 538         },{\
 539             .driver   = "virtio-serial-pci",\
 540             .property = "vectors",\
 541             .value    = stringify(0),\
 542         }
 543
 544 static QEMUMachine pc_machine_v0_12 = {
 545     .name = "pc-0.12",
 546     .desc = "Standard PC",
 547     .init = pc_init_pci_no_kvmclock,
 548     .max_cpus = 255,
 549     .compat_props = (GlobalProperty[]) {
 550         PC_COMPAT_0_12,
 551         {
 552             .driver   = "VGA",
 553             .property = "rombar",
 554             .value    = stringify(0),
 555         },{
 556             .driver   = "vmware-svga",
 557             .property = "rombar",
 558             .value    = stringify(0),
 559         },
 560         { /* end of list */ }
 561     },
 562     .hw_version = "0.12",
 563 };
 564
 565 #define PC_COMPAT_0_11 \
 566         PC_COMPAT_0_12,\
 567         {\
 568             .driver   = "virtio-blk-pci",\
 569             .property = "vectors",\
 570             .value    = stringify(0),\
 571         },{\
 572             .driver   = TYPE_PCI_DEVICE,\
 573             .property = "rombar",\
 574             .value    = stringify(0),\
 575         }
 576
 577 static QEMUMachine pc_machine_v0_11 = {
 578     .name = "pc-0.11",
 579     .desc = "Standard PC, qemu 0.11",
 580     .init = pc_init_pci_no_kvmclock,
 581     .max_cpus = 255,
 582     .compat_props = (GlobalProperty[]) {
 583         PC_COMPAT_0_11,
 584         {
 585             .driver   = "ide-drive",
 586             .property = "ver",
 587             .value    = "0.11",
 588         },{
 589             .driver   = "scsi-disk",
 590             .property = "ver",
 591             .value    = "0.11",
 592         },
 593         { /* end of list */ }
 594     },
 595     .hw_version = "0.11",
 596 };
 597
 598 static QEMUMachine pc_machine_v0_10 = {
 599     .name = "pc-0.10",
 600     .desc = "Standard PC, qemu 0.10",
 601     .init = pc_init_pci_no_kvmclock,
 602     .max_cpus = 255,
 603     .compat_props = (GlobalProperty[]) {
 604         PC_COMPAT_0_11,
 605         {
 606             .driver   = "virtio-blk-pci",
 607             .property = "class",
 608             .value    = stringify(PCI_CLASS_STORAGE_OTHER),
 609         },{
 610             .driver   = "virtio-serial-pci",
 611             .property = "class",
 612             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
 613         },{
 614             .driver   = "virtio-net-pci",
 615             .property = "vectors",
 616             .value    = stringify(0),
 617         },{
 618             .driver   = "ide-drive",
 619             .property = "ver",
 620             .value    = "0.10",
 621         },{
 622             .driver   = "scsi-disk",
 623             .property = "ver",
 624             .value    = "0.10",
 625         },
 626         { /* end of list */ }
 627     },
 628     .hw_version = "0.10",
 629 };
 630
 631 static QEMUMachine isapc_machine = {
 632     .name = "isapc",
 633     .desc = "ISA-only PC",
 634     .init = pc_init_isa,
 635     .max_cpus = 1,
 636     .compat_props = (GlobalProperty[]) {
 637         {
 638             .driver   = "pc-sysfw",
 639             .property = "rom_only",
 640             .value    = stringify(1),
 641         },
 642         { /* end of list */ }
 643     },
 644 };
 645
 646 #ifdef CONFIG_XEN
 647 static QEMUMachine xenfv_machine = {
 648     .name = "xenfv",
 649     .desc = "Xen Fully-virtualized PC",
 650     .init = pc_xen_hvm_init,
 651     .max_cpus = HVM_MAX_VCPUS,
 652     .default_machine_opts = "accel=xen",
 653 };
 654 #endif
 655
 656 static void pc_machine_init(void)
 657 {
 658     qemu_register_machine(&pc_machine_v1_2);
 659     qemu_register_machine(&pc_machine_v1_1);
 660     qemu_register_machine(&pc_machine_v1_0);
 661     qemu_register_machine(&pc_machine_v0_15);
 662     qemu_register_machine(&pc_machine_v0_14);
 663     qemu_register_machine(&pc_machine_v0_13);
 664     qemu_register_machine(&pc_machine_v0_12);
 665     qemu_register_machine(&pc_machine_v0_11);
 666     qemu_register_machine(&pc_machine_v0_10);
 667     qemu_register_machine(&isapc_machine);
 668 #ifdef CONFIG_XEN
 669     qemu_register_machine(&xenfv_machine);
 670 #endif
 671 }
 672
 673 machine_init(pc_machine_init);