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/pci.h"
  31 #include "pci/pci_ids.h"
  32 #include "usb.h"
  33 #include "net/net.h"
  34 #include "boards.h"
  35 #include "ide.h"
  36 #include "sysemu/kvm.h"
  37 #include "kvm/clock.h"
  38 #include "sysemu/sysemu.h"
  39 #include "sysbus.h"
  40 #include "sysemu/arch_init.h"
  41 #include "sysemu/blockdev.h"
  42 #include "smbus.h"
  43 #include "xen.h"
  44 #include "exec/memory.h"
  45 #include "exec/address-spaces.h"
  46 #include "cpu.h"
  47 #ifdef CONFIG_XEN
  48 #  include <xen/hvm/hvm_info_table.h>
  49 #endif
  50
  51 #define MAX_IDE_BUS 2
  52
  53 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
  54 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
  55 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
  56
  57 /* PC hardware initialisation */
  58 static void pc_init1(MemoryRegion *system_memory,
  59                      MemoryRegion *system_io,
  60                      ram_addr_t ram_size,
  61                      const char *boot_device,
  62                      const char *kernel_filename,
  63                      const char *kernel_cmdline,
  64                      const char *initrd_filename,
  65                      const char *cpu_model,
  66                      int pci_enabled,
  67                      int kvmclock_enabled)
  68 {
  69     int i;
  70     ram_addr_t below_4g_mem_size, above_4g_mem_size;
  71     PCIBus *pci_bus;
  72     ISABus *isa_bus;
  73     PCII440FXState *i440fx_state;
  74     int piix3_devfn = -1;
  75     qemu_irq *cpu_irq;
  76     qemu_irq *gsi;
  77     qemu_irq *i8259;
  78     qemu_irq *smi_irq;
  79     GSIState *gsi_state;
  80     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
  81     BusState *idebus[MAX_IDE_BUS];
  82     ISADevice *rtc_state;
  83     ISADevice *floppy;
  84     MemoryRegion *ram_memory;
  85     MemoryRegion *pci_memory;
  86     MemoryRegion *rom_memory;
  87     void *fw_cfg = NULL;
  88
  89     pc_cpus_init(cpu_model);
  90     pc_acpi_init("acpi-dsdt.aml");
  91
  92     if (kvmclock_enabled) {
  93         kvmclock_create();
  94     }
  95
  96     if (ram_size >= 0xe0000000 ) {
  97         above_4g_mem_size = ram_size - 0xe0000000;
  98         below_4g_mem_size = 0xe0000000;
  99     } else {
 100         above_4g_mem_size = 0;
 101         below_4g_mem_size = ram_size;
 102     }
 103
 104     if (pci_enabled) {
 105         pci_memory = g_new(MemoryRegion, 1);
 106         memory_region_init(pci_memory, "pci", INT64_MAX);
 107         rom_memory = pci_memory;
 108     } else {
 109         pci_memory = NULL;
 110         rom_memory = system_memory;
 111     }
 112
 113     /* allocate ram and load rom/bios */
 114     if (!xen_enabled()) {
 115         fw_cfg = pc_memory_init(system_memory,
 116                        kernel_filename, kernel_cmdline, initrd_filename,
 117                        below_4g_mem_size, above_4g_mem_size,
 118                        rom_memory, &ram_memory);
 119     }
 120
 121     gsi_state = g_malloc0(sizeof(*gsi_state));
 122     if (kvm_irqchip_in_kernel()) {
 123         kvm_pc_setup_irq_routing(pci_enabled);
 124         gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
 125                                  GSI_NUM_PINS);
 126     } else {
 127         gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
 128     }
 129
 130     if (pci_enabled) {
 131         pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
 132                               system_memory, system_io, ram_size,
 133                               below_4g_mem_size,
 134                               0x100000000ULL - below_4g_mem_size,
 135                               0x100000000ULL + above_4g_mem_size,
 136                               (sizeof(hwaddr) == 4
 137                                ? 0
 138                                : ((uint64_t)1 << 62)),
 139                               pci_memory, ram_memory);
 140     } else {
 141         pci_bus = NULL;
 142         i440fx_state = NULL;
 143         isa_bus = isa_bus_new(NULL, system_io);
 144         no_hpet = 1;
 145     }
 146     isa_bus_irqs(isa_bus, gsi);
 147
 148     if (kvm_irqchip_in_kernel()) {
 149         i8259 = kvm_i8259_init(isa_bus);
 150     } else if (xen_enabled()) {
 151         i8259 = xen_interrupt_controller_init();
 152     } else {
 153         cpu_irq = pc_allocate_cpu_irq();
 154         i8259 = i8259_init(isa_bus, cpu_irq[0]);
 155     }
 156
 157     for (i = 0; i < ISA_NUM_IRQS; i++) {
 158         gsi_state->i8259_irq[i] = i8259[i];
 159     }
 160     if (pci_enabled) {
 161         ioapic_init_gsi(gsi_state, "i440fx");
 162     }
 163
 164     pc_register_ferr_irq(gsi[13]);
 165
 166     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 167     if (xen_enabled()) {
 168         pci_create_simple(pci_bus, -1, "xen-platform");
 169     }
 170
 171     /* init basic PC hardware */
 172     pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled());
 173
 174     pc_nic_init(isa_bus, pci_bus);
 175
 176     ide_drive_get(hd, MAX_IDE_BUS);
 177     if (pci_enabled) {
 178         PCIDevice *dev;
 179         if (xen_enabled()) {
 180             dev = pci_piix3_xen_ide_init(pci_bus, hd, piix3_devfn + 1);
 181         } else {
 182             dev = pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
 183         }
 184         idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0");
 185         idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1");
 186     } else {
 187         for(i = 0; i < MAX_IDE_BUS; i++) {
 188             ISADevice *dev;
 189             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
 190                                ide_irq[i],
 191                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
 192             idebus[i] = qdev_get_child_bus(&dev->qdev, "ide.0");
 193         }
 194     }
 195
 196     audio_init(isa_bus, pci_enabled ? pci_bus : NULL);
 197
 198     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
 199                  floppy, idebus[0], idebus[1], rtc_state);
 200
 201     if (pci_enabled && usb_enabled(false)) {
 202         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
 203     }
 204
 205     if (pci_enabled && acpi_enabled) {
 206         i2c_bus *smbus;
 207
 208         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
 209         /* TODO: Populate SPD eeprom data.  */
 210         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
 211                               gsi[9], *smi_irq,
 212                               kvm_enabled(), fw_cfg);
 213         smbus_eeprom_init(smbus, 8, NULL, 0);
 214     }
 215
 216     if (pci_enabled) {
 217         pc_pci_device_init(pci_bus);
 218     }
 219 }
 220
 221 static void pc_init_pci(QEMUMachineInitArgs *args)
 222 {
 223     ram_addr_t ram_size = args->ram_size;
 224     const char *cpu_model = args->cpu_model;
 225     const char *kernel_filename = args->kernel_filename;
 226     const char *kernel_cmdline = args->kernel_cmdline;
 227     const char *initrd_filename = args->initrd_filename;
 228     const char *boot_device = args->boot_device;
 229     pc_init1(get_system_memory(),
 230              get_system_io(),
 231              ram_size, boot_device,
 232              kernel_filename, kernel_cmdline,
 233              initrd_filename, cpu_model, 1, 1);
 234 }
 235
 236 static void pc_init_pci_1_3(QEMUMachineInitArgs *args)
 237 {
 238     enable_kvm_pv_eoi();
 239     pc_init_pci(args);
 240 }
 241
 242 static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
 243 {
 244     ram_addr_t ram_size = args->ram_size;
 245     const char *cpu_model = args->cpu_model;
 246     const char *kernel_filename = args->kernel_filename;
 247     const char *kernel_cmdline = args->kernel_cmdline;
 248     const char *initrd_filename = args->initrd_filename;
 249     const char *boot_device = args->boot_device;
 250     pc_init1(get_system_memory(),
 251              get_system_io(),
 252              ram_size, boot_device,
 253              kernel_filename, kernel_cmdline,
 254              initrd_filename, cpu_model, 1, 0);
 255 }
 256
 257 static void pc_init_isa(QEMUMachineInitArgs *args)
 258 {
 259     ram_addr_t ram_size = args->ram_size;
 260     const char *cpu_model = args->cpu_model;
 261     const char *kernel_filename = args->kernel_filename;
 262     const char *kernel_cmdline = args->kernel_cmdline;
 263     const char *initrd_filename = args->initrd_filename;
 264     const char *boot_device = args->boot_device;
 265     if (cpu_model == NULL)
 266         cpu_model = "486";
 267     pc_init1(get_system_memory(),
 268              get_system_io(),
 269              ram_size, boot_device,
 270              kernel_filename, kernel_cmdline,
 271              initrd_filename, cpu_model, 0, 1);
 272 }
 273
 274 #ifdef CONFIG_XEN
 275 static void pc_xen_hvm_init(QEMUMachineInitArgs *args)
 276 {
 277     if (xen_hvm_init() != 0) {
 278         hw_error("xen hardware virtual machine initialisation failed");
 279     }
 280     pc_init_pci_no_kvmclock(args);
 281     xen_vcpu_init();
 282 }
 283 #endif
 284
 285 static QEMUMachine pc_machine_v1_4 = {
 286     .name = "pc-1.4",
 287     .alias = "pc",
 288     .desc = "Standard PC",
 289     .init = pc_init_pci_1_3,
 290     .max_cpus = 255,
 291     .is_default = 1,
 292 };
 293
 294 #define PC_COMPAT_1_3 \
 295         {\
 296             .driver   = "usb-tablet",\
 297             .property = "usb_version",\
 298             .value    = stringify(1),\
 299         }
 300
 301 static QEMUMachine pc_machine_v1_3 = {
 302     .name = "pc-1.3",
 303     .desc = "Standard PC",
 304     .init = pc_init_pci_1_3,
 305     .max_cpus = 255,
 306     .compat_props = (GlobalProperty[]) {
 307         PC_COMPAT_1_3,
 308         { /* end of list */ }
 309     },
 310 };
 311
 312 #define PC_COMPAT_1_2 \
 313         PC_COMPAT_1_3,\
 314         {\
 315             .driver   = "nec-usb-xhci",\
 316             .property = "msi",\
 317             .value    = "off",\
 318         },{\
 319             .driver   = "nec-usb-xhci",\
 320             .property = "msix",\
 321             .value    = "off",\
 322         },{\
 323             .driver   = "ivshmem",\
 324             .property = "use64",\
 325             .value    = "0",\
 326         },{\
 327             .driver   = "qxl",\
 328             .property = "revision",\
 329             .value    = stringify(3),\
 330         },{\
 331             .driver   = "qxl-vga",\
 332             .property = "revision",\
 333             .value    = stringify(3),\
 334         },{\
 335             .driver   = "VGA",\
 336             .property = "mmio",\
 337             .value    = "off",\
 338         }
 339
 340 static QEMUMachine pc_machine_v1_2 = {
 341     .name = "pc-1.2",
 342     .desc = "Standard PC",
 343     .init = pc_init_pci,
 344     .max_cpus = 255,
 345     .compat_props = (GlobalProperty[]) {
 346         PC_COMPAT_1_2,
 347         { /* end of list */ }
 348     },
 349 };
 350
 351 #define PC_COMPAT_1_1 \
 352         PC_COMPAT_1_2,\
 353         {\
 354             .driver   = "virtio-scsi-pci",\
 355             .property = "hotplug",\
 356             .value    = "off",\
 357         },{\
 358             .driver   = "virtio-scsi-pci",\
 359             .property = "param_change",\
 360             .value    = "off",\
 361         },{\
 362             .driver   = "VGA",\
 363             .property = "vgamem_mb",\
 364             .value    = stringify(8),\
 365         },{\
 366             .driver   = "vmware-svga",\
 367             .property = "vgamem_mb",\
 368             .value    = stringify(8),\
 369         },{\
 370             .driver   = "qxl-vga",\
 371             .property = "vgamem_mb",\
 372             .value    = stringify(8),\
 373         },{\
 374             .driver   = "qxl",\
 375             .property = "vgamem_mb",\
 376             .value    = stringify(8),\
 377         },{\
 378             .driver   = "virtio-blk-pci",\
 379             .property = "config-wce",\
 380             .value    = "off",\
 381         }
 382
 383 static QEMUMachine pc_machine_v1_1 = {
 384     .name = "pc-1.1",
 385     .desc = "Standard PC",
 386     .init = pc_init_pci,
 387     .max_cpus = 255,
 388     .compat_props = (GlobalProperty[]) {
 389         PC_COMPAT_1_1,
 390         { /* end of list */ }
 391     },
 392 };
 393
 394 #define PC_COMPAT_1_0 \
 395         PC_COMPAT_1_1,\
 396         {\
 397             .driver   = "pc-sysfw",\
 398             .property = "rom_only",\
 399             .value    = stringify(1),\
 400         }, {\
 401             .driver   = "isa-fdc",\
 402             .property = "check_media_rate",\
 403             .value    = "off",\
 404         }, {\
 405             .driver   = "virtio-balloon-pci",\
 406             .property = "class",\
 407             .value    = stringify(PCI_CLASS_MEMORY_RAM),\
 408         },{\
 409             .driver   = "apic",\
 410             .property = "vapic",\
 411             .value    = "off",\
 412         },{\
 413             .driver   = TYPE_USB_DEVICE,\
 414             .property = "full-path",\
 415             .value    = "no",\
 416         }
 417
 418 static QEMUMachine pc_machine_v1_0 = {
 419     .name = "pc-1.0",
 420     .desc = "Standard PC",
 421     .init = pc_init_pci,
 422     .max_cpus = 255,
 423     .compat_props = (GlobalProperty[]) {
 424         PC_COMPAT_1_0,
 425         { /* end of list */ }
 426     },
 427     .hw_version = "1.0",
 428 };
 429
 430 #define PC_COMPAT_0_15 \
 431         PC_COMPAT_1_0
 432
 433 static QEMUMachine pc_machine_v0_15 = {
 434     .name = "pc-0.15",
 435     .desc = "Standard PC",
 436     .init = pc_init_pci,
 437     .max_cpus = 255,
 438     .compat_props = (GlobalProperty[]) {
 439         PC_COMPAT_0_15,
 440         { /* end of list */ }
 441     },
 442     .hw_version = "0.15",
 443 };
 444
 445 #define PC_COMPAT_0_14 \
 446         PC_COMPAT_0_15,\
 447         {\
 448             .driver   = "virtio-blk-pci",\
 449             .property = "event_idx",\
 450             .value    = "off",\
 451         },{\
 452             .driver   = "virtio-serial-pci",\
 453             .property = "event_idx",\
 454             .value    = "off",\
 455         },{\
 456             .driver   = "virtio-net-pci",\
 457             .property = "event_idx",\
 458             .value    = "off",\
 459         },{\
 460             .driver   = "virtio-balloon-pci",\
 461             .property = "event_idx",\
 462             .value    = "off",\
 463         }
 464
 465 static QEMUMachine pc_machine_v0_14 = {
 466     .name = "pc-0.14",
 467     .desc = "Standard PC",
 468     .init = pc_init_pci,
 469     .max_cpus = 255,
 470     .compat_props = (GlobalProperty[]) {
 471         PC_COMPAT_0_14,
 472         {
 473             .driver   = "qxl",
 474             .property = "revision",
 475             .value    = stringify(2),
 476         },{
 477             .driver   = "qxl-vga",
 478             .property = "revision",
 479             .value    = stringify(2),
 480         },
 481         { /* end of list */ }
 482     },
 483     .hw_version = "0.14",
 484 };
 485
 486 #define PC_COMPAT_0_13 \
 487         PC_COMPAT_0_14,\
 488         {\
 489             .driver   = TYPE_PCI_DEVICE,\
 490             .property = "command_serr_enable",\
 491             .value    = "off",\
 492         },{\
 493             .driver   = "AC97",\
 494             .property = "use_broken_id",\
 495             .value    = stringify(1),\
 496         }
 497
 498 static QEMUMachine pc_machine_v0_13 = {
 499     .name = "pc-0.13",
 500     .desc = "Standard PC",
 501     .init = pc_init_pci_no_kvmclock,
 502     .max_cpus = 255,
 503     .compat_props = (GlobalProperty[]) {
 504         PC_COMPAT_0_13,
 505         {
 506             .driver   = "virtio-9p-pci",
 507             .property = "vectors",
 508             .value    = stringify(0),
 509         },{
 510             .driver   = "VGA",
 511             .property = "rombar",
 512             .value    = stringify(0),
 513         },{
 514             .driver   = "vmware-svga",
 515             .property = "rombar",
 516             .value    = stringify(0),
 517         },
 518         { /* end of list */ }
 519     },
 520     .hw_version = "0.13",
 521 };
 522
 523 #define PC_COMPAT_0_12 \
 524         PC_COMPAT_0_13,\
 525         {\
 526             .driver   = "virtio-serial-pci",\
 527             .property = "max_ports",\
 528             .value    = stringify(1),\
 529         },{\
 530             .driver   = "virtio-serial-pci",\
 531             .property = "vectors",\
 532             .value    = stringify(0),\
 533         }
 534
 535 static QEMUMachine pc_machine_v0_12 = {
 536     .name = "pc-0.12",
 537     .desc = "Standard PC",
 538     .init = pc_init_pci_no_kvmclock,
 539     .max_cpus = 255,
 540     .compat_props = (GlobalProperty[]) {
 541         PC_COMPAT_0_12,
 542         {
 543             .driver   = "VGA",
 544             .property = "rombar",
 545             .value    = stringify(0),
 546         },{
 547             .driver   = "vmware-svga",
 548             .property = "rombar",
 549             .value    = stringify(0),
 550         },
 551         { /* end of list */ }
 552     },
 553     .hw_version = "0.12",
 554 };
 555
 556 #define PC_COMPAT_0_11 \
 557         PC_COMPAT_0_12,\
 558         {\
 559             .driver   = "virtio-blk-pci",\
 560             .property = "vectors",\
 561             .value    = stringify(0),\
 562         },{\
 563             .driver   = TYPE_PCI_DEVICE,\
 564             .property = "rombar",\
 565             .value    = stringify(0),\
 566         }
 567
 568 static QEMUMachine pc_machine_v0_11 = {
 569     .name = "pc-0.11",
 570     .desc = "Standard PC, qemu 0.11",
 571     .init = pc_init_pci_no_kvmclock,
 572     .max_cpus = 255,
 573     .compat_props = (GlobalProperty[]) {
 574         PC_COMPAT_0_11,
 575         {
 576             .driver   = "ide-drive",
 577             .property = "ver",
 578             .value    = "0.11",
 579         },{
 580             .driver   = "scsi-disk",
 581             .property = "ver",
 582             .value    = "0.11",
 583         },
 584         { /* end of list */ }
 585     },
 586     .hw_version = "0.11",
 587 };
 588
 589 static QEMUMachine pc_machine_v0_10 = {
 590     .name = "pc-0.10",
 591     .desc = "Standard PC, qemu 0.10",
 592     .init = pc_init_pci_no_kvmclock,
 593     .max_cpus = 255,
 594     .compat_props = (GlobalProperty[]) {
 595         PC_COMPAT_0_11,
 596         {
 597             .driver   = "virtio-blk-pci",
 598             .property = "class",
 599             .value    = stringify(PCI_CLASS_STORAGE_OTHER),
 600         },{
 601             .driver   = "virtio-serial-pci",
 602             .property = "class",
 603             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
 604         },{
 605             .driver   = "virtio-net-pci",
 606             .property = "vectors",
 607             .value    = stringify(0),
 608         },{
 609             .driver   = "ide-drive",
 610             .property = "ver",
 611             .value    = "0.10",
 612         },{
 613             .driver   = "scsi-disk",
 614             .property = "ver",
 615             .value    = "0.10",
 616         },
 617         { /* end of list */ }
 618     },
 619     .hw_version = "0.10",
 620 };
 621
 622 static QEMUMachine isapc_machine = {
 623     .name = "isapc",
 624     .desc = "ISA-only PC",
 625     .init = pc_init_isa,
 626     .max_cpus = 1,
 627     .compat_props = (GlobalProperty[]) {
 628         {
 629             .driver   = "pc-sysfw",
 630             .property = "rom_only",
 631             .value    = stringify(1),
 632         },
 633         { /* end of list */ }
 634     },
 635 };
 636
 637 #ifdef CONFIG_XEN
 638 static QEMUMachine xenfv_machine = {
 639     .name = "xenfv",
 640     .desc = "Xen Fully-virtualized PC",
 641     .init = pc_xen_hvm_init,
 642     .max_cpus = HVM_MAX_VCPUS,
 643     .default_machine_opts = "accel=xen",
 644 };
 645 #endif
 646
 647 static void pc_machine_init(void)
 648 {
 649     qemu_register_machine(&pc_machine_v1_4);
 650     qemu_register_machine(&pc_machine_v1_3);
 651     qemu_register_machine(&pc_machine_v1_2);
 652     qemu_register_machine(&pc_machine_v1_1);
 653     qemu_register_machine(&pc_machine_v1_0);
 654     qemu_register_machine(&pc_machine_v0_15);
 655     qemu_register_machine(&pc_machine_v0_14);
 656     qemu_register_machine(&pc_machine_v0_13);
 657     qemu_register_machine(&pc_machine_v0_12);
 658     qemu_register_machine(&pc_machine_v0_11);
 659     qemu_register_machine(&pc_machine_v0_10);
 660     qemu_register_machine(&isapc_machine);
 661 #ifdef CONFIG_XEN
 662     qemu_register_machine(&xenfv_machine);
 663 #endif
 664 }
 665
 666 machine_init(pc_machine_init);