1 /* 2 * Copyright (c) 2018 Intel Corporation 3 * Copyright (c) 2019 Red Hat, Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms and conditions of the GNU General Public License, 7 * version 2 or later, as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #include "qemu/osdep.h" 19 #include "qemu/error-report.h" 20 #include "qemu/cutils.h" 21 #include "qemu/units.h" 22 #include "qapi/error.h" 23 #include "qapi/visitor.h" 24 #include "qapi/qapi-visit-common.h" 25 #include "sysemu/sysemu.h" 26 #include "sysemu/cpus.h" 27 #include "sysemu/numa.h" 28 #include "sysemu/reset.h" 29 #include "sysemu/runstate.h" 30 #include "acpi-microvm.h" 31 32 #include "hw/loader.h" 33 #include "hw/irq.h" 34 #include "hw/kvm/clock.h" 35 #include "hw/i386/microvm.h" 36 #include "hw/i386/x86.h" 37 #include "target/i386/cpu.h" 38 #include "hw/intc/i8259.h" 39 #include "hw/timer/i8254.h" 40 #include "hw/rtc/mc146818rtc.h" 41 #include "hw/char/serial.h" 42 #include "hw/display/ramfb.h" 43 #include "hw/i386/topology.h" 44 #include "hw/i386/e820_memory_layout.h" 45 #include "hw/i386/fw_cfg.h" 46 #include "hw/virtio/virtio-mmio.h" 47 #include "hw/acpi/acpi.h" 48 #include "hw/acpi/generic_event_device.h" 49 50 #include "cpu.h" 51 #include "elf.h" 52 #include "kvm_i386.h" 53 #include "hw/xen/start_info.h" 54 55 #define MICROVM_QBOOT_FILENAME "qboot.rom" 56 #define MICROVM_BIOS_FILENAME "bios-microvm.bin" 57 58 static void microvm_set_rtc(MicrovmMachineState *mms, ISADevice *s) 59 { 60 X86MachineState *x86ms = X86_MACHINE(mms); 61 int val; 62 63 val = MIN(x86ms->below_4g_mem_size / KiB, 640); 64 rtc_set_memory(s, 0x15, val); 65 rtc_set_memory(s, 0x16, val >> 8); 66 /* extended memory (next 64MiB) */ 67 if (x86ms->below_4g_mem_size > 1 * MiB) { 68 val = (x86ms->below_4g_mem_size - 1 * MiB) / KiB; 69 } else { 70 val = 0; 71 } 72 if (val > 65535) { 73 val = 65535; 74 } 75 rtc_set_memory(s, 0x17, val); 76 rtc_set_memory(s, 0x18, val >> 8); 77 rtc_set_memory(s, 0x30, val); 78 rtc_set_memory(s, 0x31, val >> 8); 79 /* memory between 16MiB and 4GiB */ 80 if (x86ms->below_4g_mem_size > 16 * MiB) { 81 val = (x86ms->below_4g_mem_size - 16 * MiB) / (64 * KiB); 82 } else { 83 val = 0; 84 } 85 if (val > 65535) { 86 val = 65535; 87 } 88 rtc_set_memory(s, 0x34, val); 89 rtc_set_memory(s, 0x35, val >> 8); 90 /* memory above 4GiB */ 91 val = x86ms->above_4g_mem_size / 65536; 92 rtc_set_memory(s, 0x5b, val); 93 rtc_set_memory(s, 0x5c, val >> 8); 94 rtc_set_memory(s, 0x5d, val >> 16); 95 } 96 97 static void microvm_gsi_handler(void *opaque, int n, int level) 98 { 99 GSIState *s = opaque; 100 101 qemu_set_irq(s->ioapic_irq[n], level); 102 } 103 104 static void microvm_devices_init(MicrovmMachineState *mms) 105 { 106 X86MachineState *x86ms = X86_MACHINE(mms); 107 ISABus *isa_bus; 108 ISADevice *rtc_state; 109 GSIState *gsi_state; 110 int i; 111 112 /* Core components */ 113 114 gsi_state = g_malloc0(sizeof(*gsi_state)); 115 if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) { 116 x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS); 117 } else { 118 x86ms->gsi = qemu_allocate_irqs(microvm_gsi_handler, 119 gsi_state, GSI_NUM_PINS); 120 } 121 122 isa_bus = isa_bus_new(NULL, get_system_memory(), get_system_io(), 123 &error_abort); 124 isa_bus_irqs(isa_bus, x86ms->gsi); 125 126 ioapic_init_gsi(gsi_state, "machine"); 127 128 kvmclock_create(); 129 130 mms->virtio_irq_base = x86_machine_is_acpi_enabled(x86ms) ? 16 : 5; 131 for (i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) { 132 sysbus_create_simple("virtio-mmio", 133 VIRTIO_MMIO_BASE + i * 512, 134 x86ms->gsi[mms->virtio_irq_base + i]); 135 } 136 137 /* Optional and legacy devices */ 138 if (x86_machine_is_acpi_enabled(x86ms)) { 139 DeviceState *dev = qdev_new(TYPE_ACPI_GED_X86); 140 qdev_prop_set_uint32(dev, "ged-event", ACPI_GED_PWR_DOWN_EVT); 141 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, GED_MMIO_BASE); 142 /* sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, GED_MMIO_BASE_MEMHP); */ 143 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, GED_MMIO_BASE_REGS); 144 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 145 x86ms->gsi[GED_MMIO_IRQ]); 146 sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); 147 x86ms->acpi_dev = HOTPLUG_HANDLER(dev); 148 } 149 150 if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) { 151 qemu_irq *i8259; 152 153 i8259 = i8259_init(isa_bus, x86_allocate_cpu_irq()); 154 for (i = 0; i < ISA_NUM_IRQS; i++) { 155 gsi_state->i8259_irq[i] = i8259[i]; 156 } 157 g_free(i8259); 158 } 159 160 if (mms->pit == ON_OFF_AUTO_ON || mms->pit == ON_OFF_AUTO_AUTO) { 161 if (kvm_pit_in_kernel()) { 162 kvm_pit_init(isa_bus, 0x40); 163 } else { 164 i8254_pit_init(isa_bus, 0x40, 0, NULL); 165 } 166 } 167 168 if (mms->rtc == ON_OFF_AUTO_ON || 169 (mms->rtc == ON_OFF_AUTO_AUTO && !kvm_enabled())) { 170 rtc_state = mc146818_rtc_init(isa_bus, 2000, NULL); 171 microvm_set_rtc(mms, rtc_state); 172 } 173 174 if (mms->isa_serial) { 175 serial_hds_isa_init(isa_bus, 0, 1); 176 } 177 178 if (bios_name == NULL) { 179 bios_name = x86_machine_is_acpi_enabled(x86ms) 180 ? MICROVM_BIOS_FILENAME 181 : MICROVM_QBOOT_FILENAME; 182 } 183 x86_bios_rom_init(get_system_memory(), true); 184 } 185 186 static void microvm_memory_init(MicrovmMachineState *mms) 187 { 188 MachineState *machine = MACHINE(mms); 189 X86MachineState *x86ms = X86_MACHINE(mms); 190 MemoryRegion *ram_below_4g, *ram_above_4g; 191 MemoryRegion *system_memory = get_system_memory(); 192 FWCfgState *fw_cfg; 193 ram_addr_t lowmem = 0xc0000000; /* 3G */ 194 int i; 195 196 if (machine->ram_size > lowmem) { 197 x86ms->above_4g_mem_size = machine->ram_size - lowmem; 198 x86ms->below_4g_mem_size = lowmem; 199 } else { 200 x86ms->above_4g_mem_size = 0; 201 x86ms->below_4g_mem_size = machine->ram_size; 202 } 203 204 ram_below_4g = g_malloc(sizeof(*ram_below_4g)); 205 memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram, 206 0, x86ms->below_4g_mem_size); 207 memory_region_add_subregion(system_memory, 0, ram_below_4g); 208 209 e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM); 210 211 if (x86ms->above_4g_mem_size > 0) { 212 ram_above_4g = g_malloc(sizeof(*ram_above_4g)); 213 memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", 214 machine->ram, 215 x86ms->below_4g_mem_size, 216 x86ms->above_4g_mem_size); 217 memory_region_add_subregion(system_memory, 0x100000000ULL, 218 ram_above_4g); 219 e820_add_entry(0x100000000ULL, x86ms->above_4g_mem_size, E820_RAM); 220 } 221 222 fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, 223 &address_space_memory); 224 225 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, machine->smp.cpus); 226 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, machine->smp.max_cpus); 227 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size); 228 fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override()); 229 fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, 230 &e820_reserve, sizeof(e820_reserve)); 231 fw_cfg_add_file(fw_cfg, "etc/e820", e820_table, 232 sizeof(struct e820_entry) * e820_get_num_entries()); 233 234 rom_set_fw(fw_cfg); 235 236 if (machine->kernel_filename != NULL) { 237 x86_load_linux(x86ms, fw_cfg, 0, true, true); 238 } 239 240 if (mms->option_roms) { 241 for (i = 0; i < nb_option_roms; i++) { 242 rom_add_option(option_rom[i].name, option_rom[i].bootindex); 243 } 244 } 245 246 x86ms->fw_cfg = fw_cfg; 247 x86ms->ioapic_as = &address_space_memory; 248 } 249 250 static gchar *microvm_get_mmio_cmdline(gchar *name, uint32_t virtio_irq_base) 251 { 252 gchar *cmdline; 253 gchar *separator; 254 long int index; 255 int ret; 256 257 separator = g_strrstr(name, "."); 258 if (!separator) { 259 return NULL; 260 } 261 262 if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) { 263 return NULL; 264 } 265 266 cmdline = g_malloc0(VIRTIO_CMDLINE_MAXLEN); 267 ret = g_snprintf(cmdline, VIRTIO_CMDLINE_MAXLEN, 268 " virtio_mmio.device=512@0x%lx:%ld", 269 VIRTIO_MMIO_BASE + index * 512, 270 virtio_irq_base + index); 271 if (ret < 0 || ret >= VIRTIO_CMDLINE_MAXLEN) { 272 g_free(cmdline); 273 return NULL; 274 } 275 276 return cmdline; 277 } 278 279 static void microvm_fix_kernel_cmdline(MachineState *machine) 280 { 281 X86MachineState *x86ms = X86_MACHINE(machine); 282 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 283 BusState *bus; 284 BusChild *kid; 285 char *cmdline; 286 287 /* 288 * Find MMIO transports with attached devices, and add them to the kernel 289 * command line. 290 * 291 * Yes, this is a hack, but one that heavily improves the UX without 292 * introducing any significant issues. 293 */ 294 cmdline = g_strdup(machine->kernel_cmdline); 295 bus = sysbus_get_default(); 296 QTAILQ_FOREACH(kid, &bus->children, sibling) { 297 DeviceState *dev = kid->child; 298 ObjectClass *class = object_get_class(OBJECT(dev)); 299 300 if (class == object_class_by_name(TYPE_VIRTIO_MMIO)) { 301 VirtIOMMIOProxy *mmio = VIRTIO_MMIO(OBJECT(dev)); 302 VirtioBusState *mmio_virtio_bus = &mmio->bus; 303 BusState *mmio_bus = &mmio_virtio_bus->parent_obj; 304 305 if (!QTAILQ_EMPTY(&mmio_bus->children)) { 306 gchar *mmio_cmdline = microvm_get_mmio_cmdline 307 (mmio_bus->name, mms->virtio_irq_base); 308 if (mmio_cmdline) { 309 char *newcmd = g_strjoin(NULL, cmdline, mmio_cmdline, NULL); 310 g_free(mmio_cmdline); 311 g_free(cmdline); 312 cmdline = newcmd; 313 } 314 } 315 } 316 } 317 318 fw_cfg_modify_i32(x86ms->fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(cmdline) + 1); 319 fw_cfg_modify_string(x86ms->fw_cfg, FW_CFG_CMDLINE_DATA, cmdline); 320 321 g_free(cmdline); 322 } 323 324 static void microvm_device_pre_plug_cb(HotplugHandler *hotplug_dev, 325 DeviceState *dev, Error **errp) 326 { 327 x86_cpu_pre_plug(hotplug_dev, dev, errp); 328 } 329 330 static void microvm_device_plug_cb(HotplugHandler *hotplug_dev, 331 DeviceState *dev, Error **errp) 332 { 333 x86_cpu_plug(hotplug_dev, dev, errp); 334 } 335 336 static void microvm_device_unplug_request_cb(HotplugHandler *hotplug_dev, 337 DeviceState *dev, Error **errp) 338 { 339 error_setg(errp, "unplug not supported by microvm"); 340 } 341 342 static void microvm_device_unplug_cb(HotplugHandler *hotplug_dev, 343 DeviceState *dev, Error **errp) 344 { 345 error_setg(errp, "unplug not supported by microvm"); 346 } 347 348 static HotplugHandler *microvm_get_hotplug_handler(MachineState *machine, 349 DeviceState *dev) 350 { 351 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 352 return HOTPLUG_HANDLER(machine); 353 } 354 return NULL; 355 } 356 357 static void microvm_machine_state_init(MachineState *machine) 358 { 359 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 360 X86MachineState *x86ms = X86_MACHINE(machine); 361 Error *local_err = NULL; 362 363 microvm_memory_init(mms); 364 365 x86_cpus_init(x86ms, CPU_VERSION_LATEST); 366 if (local_err) { 367 error_report_err(local_err); 368 exit(1); 369 } 370 371 microvm_devices_init(mms); 372 } 373 374 static void microvm_machine_reset(MachineState *machine) 375 { 376 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 377 CPUState *cs; 378 X86CPU *cpu; 379 380 if (!x86_machine_is_acpi_enabled(X86_MACHINE(machine)) && 381 machine->kernel_filename != NULL && 382 mms->auto_kernel_cmdline && !mms->kernel_cmdline_fixed) { 383 microvm_fix_kernel_cmdline(machine); 384 mms->kernel_cmdline_fixed = true; 385 } 386 387 qemu_devices_reset(); 388 389 CPU_FOREACH(cs) { 390 cpu = X86_CPU(cs); 391 392 if (cpu->apic_state) { 393 device_legacy_reset(cpu->apic_state); 394 } 395 } 396 } 397 398 static void microvm_machine_get_pic(Object *obj, Visitor *v, const char *name, 399 void *opaque, Error **errp) 400 { 401 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 402 OnOffAuto pic = mms->pic; 403 404 visit_type_OnOffAuto(v, name, &pic, errp); 405 } 406 407 static void microvm_machine_set_pic(Object *obj, Visitor *v, const char *name, 408 void *opaque, Error **errp) 409 { 410 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 411 412 visit_type_OnOffAuto(v, name, &mms->pic, errp); 413 } 414 415 static void microvm_machine_get_pit(Object *obj, Visitor *v, const char *name, 416 void *opaque, Error **errp) 417 { 418 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 419 OnOffAuto pit = mms->pit; 420 421 visit_type_OnOffAuto(v, name, &pit, errp); 422 } 423 424 static void microvm_machine_set_pit(Object *obj, Visitor *v, const char *name, 425 void *opaque, Error **errp) 426 { 427 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 428 429 visit_type_OnOffAuto(v, name, &mms->pit, errp); 430 } 431 432 static void microvm_machine_get_rtc(Object *obj, Visitor *v, const char *name, 433 void *opaque, Error **errp) 434 { 435 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 436 OnOffAuto rtc = mms->rtc; 437 438 visit_type_OnOffAuto(v, name, &rtc, errp); 439 } 440 441 static void microvm_machine_set_rtc(Object *obj, Visitor *v, const char *name, 442 void *opaque, Error **errp) 443 { 444 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 445 446 visit_type_OnOffAuto(v, name, &mms->rtc, errp); 447 } 448 449 static bool microvm_machine_get_isa_serial(Object *obj, Error **errp) 450 { 451 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 452 453 return mms->isa_serial; 454 } 455 456 static void microvm_machine_set_isa_serial(Object *obj, bool value, 457 Error **errp) 458 { 459 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 460 461 mms->isa_serial = value; 462 } 463 464 static bool microvm_machine_get_option_roms(Object *obj, Error **errp) 465 { 466 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 467 468 return mms->option_roms; 469 } 470 471 static void microvm_machine_set_option_roms(Object *obj, bool value, 472 Error **errp) 473 { 474 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 475 476 mms->option_roms = value; 477 } 478 479 static bool microvm_machine_get_auto_kernel_cmdline(Object *obj, Error **errp) 480 { 481 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 482 483 return mms->auto_kernel_cmdline; 484 } 485 486 static void microvm_machine_set_auto_kernel_cmdline(Object *obj, bool value, 487 Error **errp) 488 { 489 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 490 491 mms->auto_kernel_cmdline = value; 492 } 493 494 static void microvm_machine_done(Notifier *notifier, void *data) 495 { 496 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 497 machine_done); 498 499 acpi_setup_microvm(mms); 500 } 501 502 static void microvm_powerdown_req(Notifier *notifier, void *data) 503 { 504 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 505 powerdown_req); 506 X86MachineState *x86ms = X86_MACHINE(mms); 507 508 if (x86ms->acpi_dev) { 509 Object *obj = OBJECT(x86ms->acpi_dev); 510 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 511 adevc->send_event(ACPI_DEVICE_IF(x86ms->acpi_dev), 512 ACPI_POWER_DOWN_STATUS); 513 } 514 } 515 516 static void microvm_machine_initfn(Object *obj) 517 { 518 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 519 520 /* Configuration */ 521 mms->pic = ON_OFF_AUTO_AUTO; 522 mms->pit = ON_OFF_AUTO_AUTO; 523 mms->rtc = ON_OFF_AUTO_AUTO; 524 mms->isa_serial = true; 525 mms->option_roms = true; 526 mms->auto_kernel_cmdline = true; 527 528 /* State */ 529 mms->kernel_cmdline_fixed = false; 530 531 mms->machine_done.notify = microvm_machine_done; 532 qemu_add_machine_init_done_notifier(&mms->machine_done); 533 mms->powerdown_req.notify = microvm_powerdown_req; 534 qemu_register_powerdown_notifier(&mms->powerdown_req); 535 } 536 537 static void microvm_class_init(ObjectClass *oc, void *data) 538 { 539 MachineClass *mc = MACHINE_CLASS(oc); 540 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 541 542 mc->init = microvm_machine_state_init; 543 544 mc->family = "microvm_i386"; 545 mc->desc = "microvm (i386)"; 546 mc->units_per_default_bus = 1; 547 mc->no_floppy = 1; 548 mc->max_cpus = 288; 549 mc->has_hotpluggable_cpus = false; 550 mc->auto_enable_numa_with_memhp = false; 551 mc->auto_enable_numa_with_memdev = false; 552 mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; 553 mc->nvdimm_supported = false; 554 mc->default_ram_id = "microvm.ram"; 555 556 /* Avoid relying too much on kernel components */ 557 mc->default_kernel_irqchip_split = true; 558 559 /* Machine class handlers */ 560 mc->reset = microvm_machine_reset; 561 562 /* hotplug (for cpu coldplug) */ 563 mc->get_hotplug_handler = microvm_get_hotplug_handler; 564 hc->pre_plug = microvm_device_pre_plug_cb; 565 hc->plug = microvm_device_plug_cb; 566 hc->unplug_request = microvm_device_unplug_request_cb; 567 hc->unplug = microvm_device_unplug_cb; 568 569 object_class_property_add(oc, MICROVM_MACHINE_PIC, "OnOffAuto", 570 microvm_machine_get_pic, 571 microvm_machine_set_pic, 572 NULL, NULL); 573 object_class_property_set_description(oc, MICROVM_MACHINE_PIC, 574 "Enable i8259 PIC"); 575 576 object_class_property_add(oc, MICROVM_MACHINE_PIT, "OnOffAuto", 577 microvm_machine_get_pit, 578 microvm_machine_set_pit, 579 NULL, NULL); 580 object_class_property_set_description(oc, MICROVM_MACHINE_PIT, 581 "Enable i8254 PIT"); 582 583 object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto", 584 microvm_machine_get_rtc, 585 microvm_machine_set_rtc, 586 NULL, NULL); 587 object_class_property_set_description(oc, MICROVM_MACHINE_RTC, 588 "Enable MC146818 RTC"); 589 590 object_class_property_add_bool(oc, MICROVM_MACHINE_ISA_SERIAL, 591 microvm_machine_get_isa_serial, 592 microvm_machine_set_isa_serial); 593 object_class_property_set_description(oc, MICROVM_MACHINE_ISA_SERIAL, 594 "Set off to disable the instantiation an ISA serial port"); 595 596 object_class_property_add_bool(oc, MICROVM_MACHINE_OPTION_ROMS, 597 microvm_machine_get_option_roms, 598 microvm_machine_set_option_roms); 599 object_class_property_set_description(oc, MICROVM_MACHINE_OPTION_ROMS, 600 "Set off to disable loading option ROMs"); 601 602 object_class_property_add_bool(oc, MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 603 microvm_machine_get_auto_kernel_cmdline, 604 microvm_machine_set_auto_kernel_cmdline); 605 object_class_property_set_description(oc, 606 MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 607 "Set off to disable adding virtio-mmio devices to the kernel cmdline"); 608 609 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); 610 } 611 612 static const TypeInfo microvm_machine_info = { 613 .name = TYPE_MICROVM_MACHINE, 614 .parent = TYPE_X86_MACHINE, 615 .instance_size = sizeof(MicrovmMachineState), 616 .instance_init = microvm_machine_initfn, 617 .class_size = sizeof(MicrovmMachineClass), 618 .class_init = microvm_class_init, 619 .interfaces = (InterfaceInfo[]) { 620 { TYPE_HOTPLUG_HANDLER }, 621 { } 622 }, 623 }; 624 625 static void microvm_machine_init(void) 626 { 627 type_register_static(µvm_machine_info); 628 } 629 type_init(microvm_machine_init); 630