microvm.c (24843B)
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 #include "microvm-dt.h" 32 33 #include "hw/loader.h" 34 #include "hw/irq.h" 35 #include "hw/kvm/clock.h" 36 #include "hw/i386/microvm.h" 37 #include "hw/i386/x86.h" 38 #include "target/i386/cpu.h" 39 #include "hw/intc/i8259.h" 40 #include "hw/timer/i8254.h" 41 #include "hw/rtc/mc146818rtc.h" 42 #include "hw/char/serial.h" 43 #include "hw/display/ramfb.h" 44 #include "hw/i386/topology.h" 45 #include "hw/i386/e820_memory_layout.h" 46 #include "hw/i386/fw_cfg.h" 47 #include "hw/virtio/virtio-mmio.h" 48 #include "hw/acpi/acpi.h" 49 #include "hw/acpi/generic_event_device.h" 50 #include "hw/pci-host/gpex.h" 51 #include "hw/usb/xhci.h" 52 53 #include "elf.h" 54 #include "kvm/kvm_i386.h" 55 #include "hw/xen/start_info.h" 56 57 #define MICROVM_QBOOT_FILENAME "qboot.rom" 58 #define MICROVM_BIOS_FILENAME "bios-microvm.bin" 59 60 static void microvm_set_rtc(MicrovmMachineState *mms, ISADevice *s) 61 { 62 X86MachineState *x86ms = X86_MACHINE(mms); 63 int val; 64 65 val = MIN(x86ms->below_4g_mem_size / KiB, 640); 66 rtc_set_memory(s, 0x15, val); 67 rtc_set_memory(s, 0x16, val >> 8); 68 /* extended memory (next 64MiB) */ 69 if (x86ms->below_4g_mem_size > 1 * MiB) { 70 val = (x86ms->below_4g_mem_size - 1 * MiB) / KiB; 71 } else { 72 val = 0; 73 } 74 if (val > 65535) { 75 val = 65535; 76 } 77 rtc_set_memory(s, 0x17, val); 78 rtc_set_memory(s, 0x18, val >> 8); 79 rtc_set_memory(s, 0x30, val); 80 rtc_set_memory(s, 0x31, val >> 8); 81 /* memory between 16MiB and 4GiB */ 82 if (x86ms->below_4g_mem_size > 16 * MiB) { 83 val = (x86ms->below_4g_mem_size - 16 * MiB) / (64 * KiB); 84 } else { 85 val = 0; 86 } 87 if (val > 65535) { 88 val = 65535; 89 } 90 rtc_set_memory(s, 0x34, val); 91 rtc_set_memory(s, 0x35, val >> 8); 92 /* memory above 4GiB */ 93 val = x86ms->above_4g_mem_size / 65536; 94 rtc_set_memory(s, 0x5b, val); 95 rtc_set_memory(s, 0x5c, val >> 8); 96 rtc_set_memory(s, 0x5d, val >> 16); 97 } 98 99 static void create_gpex(MicrovmMachineState *mms) 100 { 101 X86MachineState *x86ms = X86_MACHINE(mms); 102 MemoryRegion *mmio32_alias; 103 MemoryRegion *mmio64_alias; 104 MemoryRegion *mmio_reg; 105 MemoryRegion *ecam_alias; 106 MemoryRegion *ecam_reg; 107 DeviceState *dev; 108 int i; 109 110 dev = qdev_new(TYPE_GPEX_HOST); 111 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 112 113 /* Map only the first size_ecam bytes of ECAM space */ 114 ecam_alias = g_new0(MemoryRegion, 1); 115 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 116 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 117 ecam_reg, 0, mms->gpex.ecam.size); 118 memory_region_add_subregion(get_system_memory(), 119 mms->gpex.ecam.base, ecam_alias); 120 121 /* Map the MMIO window into system address space so as to expose 122 * the section of PCI MMIO space which starts at the same base address 123 * (ie 1:1 mapping for that part of PCI MMIO space visible through 124 * the window). 125 */ 126 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 127 if (mms->gpex.mmio32.size) { 128 mmio32_alias = g_new0(MemoryRegion, 1); 129 memory_region_init_alias(mmio32_alias, OBJECT(dev), "pcie-mmio32", mmio_reg, 130 mms->gpex.mmio32.base, mms->gpex.mmio32.size); 131 memory_region_add_subregion(get_system_memory(), 132 mms->gpex.mmio32.base, mmio32_alias); 133 } 134 if (mms->gpex.mmio64.size) { 135 mmio64_alias = g_new0(MemoryRegion, 1); 136 memory_region_init_alias(mmio64_alias, OBJECT(dev), "pcie-mmio64", mmio_reg, 137 mms->gpex.mmio64.base, mms->gpex.mmio64.size); 138 memory_region_add_subregion(get_system_memory(), 139 mms->gpex.mmio64.base, mmio64_alias); 140 } 141 142 for (i = 0; i < GPEX_NUM_IRQS; i++) { 143 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, 144 x86ms->gsi[mms->gpex.irq + i]); 145 } 146 } 147 148 static int microvm_ioapics(MicrovmMachineState *mms) 149 { 150 if (!x86_machine_is_acpi_enabled(X86_MACHINE(mms))) { 151 return 1; 152 } 153 if (mms->ioapic2 == ON_OFF_AUTO_OFF) { 154 return 1; 155 } 156 return 2; 157 } 158 159 static void microvm_devices_init(MicrovmMachineState *mms) 160 { 161 const char *default_firmware; 162 X86MachineState *x86ms = X86_MACHINE(mms); 163 ISABus *isa_bus; 164 ISADevice *rtc_state; 165 GSIState *gsi_state; 166 int ioapics; 167 int i; 168 169 /* Core components */ 170 ioapics = microvm_ioapics(mms); 171 gsi_state = g_malloc0(sizeof(*gsi_state)); 172 x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, 173 IOAPIC_NUM_PINS * ioapics); 174 175 isa_bus = isa_bus_new(NULL, get_system_memory(), get_system_io(), 176 &error_abort); 177 isa_bus_irqs(isa_bus, x86ms->gsi); 178 179 ioapic_init_gsi(gsi_state, "machine"); 180 if (ioapics > 1) { 181 x86ms->ioapic2 = ioapic_init_secondary(gsi_state); 182 } 183 184 kvmclock_create(true); 185 186 mms->virtio_irq_base = 5; 187 mms->virtio_num_transports = 8; 188 if (x86ms->ioapic2) { 189 mms->pcie_irq_base = 16; /* 16 -> 19 */ 190 /* use second ioapic (24 -> 47) for virtio-mmio irq lines */ 191 mms->virtio_irq_base = IO_APIC_SECONDARY_IRQBASE; 192 mms->virtio_num_transports = IOAPIC_NUM_PINS; 193 } else if (x86_machine_is_acpi_enabled(x86ms)) { 194 mms->pcie_irq_base = 12; /* 12 -> 15 */ 195 mms->virtio_irq_base = 16; /* 16 -> 23 */ 196 } 197 198 for (i = 0; i < mms->virtio_num_transports; i++) { 199 sysbus_create_simple("virtio-mmio", 200 VIRTIO_MMIO_BASE + i * 512, 201 x86ms->gsi[mms->virtio_irq_base + i]); 202 } 203 204 /* Optional and legacy devices */ 205 if (x86_machine_is_acpi_enabled(x86ms)) { 206 DeviceState *dev = qdev_new(TYPE_ACPI_GED_X86); 207 qdev_prop_set_uint32(dev, "ged-event", ACPI_GED_PWR_DOWN_EVT); 208 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, GED_MMIO_BASE); 209 /* sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, GED_MMIO_BASE_MEMHP); */ 210 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, GED_MMIO_BASE_REGS); 211 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 212 x86ms->gsi[GED_MMIO_IRQ]); 213 sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); 214 x86ms->acpi_dev = HOTPLUG_HANDLER(dev); 215 } 216 217 if (x86_machine_is_acpi_enabled(x86ms) && machine_usb(MACHINE(mms))) { 218 DeviceState *dev = qdev_new(TYPE_XHCI_SYSBUS); 219 qdev_prop_set_uint32(dev, "intrs", 1); 220 qdev_prop_set_uint32(dev, "slots", XHCI_MAXSLOTS); 221 qdev_prop_set_uint32(dev, "p2", 8); 222 qdev_prop_set_uint32(dev, "p3", 8); 223 sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); 224 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, MICROVM_XHCI_BASE); 225 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 226 x86ms->gsi[MICROVM_XHCI_IRQ]); 227 } 228 229 if (x86_machine_is_acpi_enabled(x86ms) && mms->pcie == ON_OFF_AUTO_ON) { 230 /* use topmost 25% of the address space available */ 231 hwaddr phys_size = (hwaddr)1 << X86_CPU(first_cpu)->phys_bits; 232 if (phys_size > 0x1000000ll) { 233 mms->gpex.mmio64.size = phys_size / 4; 234 mms->gpex.mmio64.base = phys_size - mms->gpex.mmio64.size; 235 } 236 mms->gpex.mmio32.base = PCIE_MMIO_BASE; 237 mms->gpex.mmio32.size = PCIE_MMIO_SIZE; 238 mms->gpex.ecam.base = PCIE_ECAM_BASE; 239 mms->gpex.ecam.size = PCIE_ECAM_SIZE; 240 mms->gpex.irq = mms->pcie_irq_base; 241 create_gpex(mms); 242 x86ms->pci_irq_mask = ((1 << (mms->pcie_irq_base + 0)) | 243 (1 << (mms->pcie_irq_base + 1)) | 244 (1 << (mms->pcie_irq_base + 2)) | 245 (1 << (mms->pcie_irq_base + 3))); 246 } else { 247 x86ms->pci_irq_mask = 0; 248 } 249 250 if (x86ms->pic == ON_OFF_AUTO_ON || x86ms->pic == ON_OFF_AUTO_AUTO) { 251 qemu_irq *i8259; 252 253 i8259 = i8259_init(isa_bus, x86_allocate_cpu_irq()); 254 for (i = 0; i < ISA_NUM_IRQS; i++) { 255 gsi_state->i8259_irq[i] = i8259[i]; 256 } 257 g_free(i8259); 258 } 259 260 if (x86ms->pit == ON_OFF_AUTO_ON || x86ms->pit == ON_OFF_AUTO_AUTO) { 261 if (kvm_pit_in_kernel()) { 262 kvm_pit_init(isa_bus, 0x40); 263 } else { 264 i8254_pit_init(isa_bus, 0x40, 0, NULL); 265 } 266 } 267 268 if (mms->rtc == ON_OFF_AUTO_ON || 269 (mms->rtc == ON_OFF_AUTO_AUTO && !kvm_enabled())) { 270 rtc_state = mc146818_rtc_init(isa_bus, 2000, NULL); 271 microvm_set_rtc(mms, rtc_state); 272 } 273 274 if (mms->isa_serial) { 275 serial_hds_isa_init(isa_bus, 0, 1); 276 } 277 278 default_firmware = x86_machine_is_acpi_enabled(x86ms) 279 ? MICROVM_BIOS_FILENAME 280 : MICROVM_QBOOT_FILENAME; 281 x86_bios_rom_init(MACHINE(mms), default_firmware, get_system_memory(), true); 282 } 283 284 static void microvm_memory_init(MicrovmMachineState *mms) 285 { 286 MachineState *machine = MACHINE(mms); 287 X86MachineState *x86ms = X86_MACHINE(mms); 288 MemoryRegion *ram_below_4g, *ram_above_4g; 289 MemoryRegion *system_memory = get_system_memory(); 290 FWCfgState *fw_cfg; 291 ram_addr_t lowmem = 0xc0000000; /* 3G */ 292 int i; 293 294 if (machine->ram_size > lowmem) { 295 x86ms->above_4g_mem_size = machine->ram_size - lowmem; 296 x86ms->below_4g_mem_size = lowmem; 297 } else { 298 x86ms->above_4g_mem_size = 0; 299 x86ms->below_4g_mem_size = machine->ram_size; 300 } 301 302 ram_below_4g = g_malloc(sizeof(*ram_below_4g)); 303 memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram, 304 0, x86ms->below_4g_mem_size); 305 memory_region_add_subregion(system_memory, 0, ram_below_4g); 306 307 e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM); 308 309 if (x86ms->above_4g_mem_size > 0) { 310 ram_above_4g = g_malloc(sizeof(*ram_above_4g)); 311 memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", 312 machine->ram, 313 x86ms->below_4g_mem_size, 314 x86ms->above_4g_mem_size); 315 memory_region_add_subregion(system_memory, 0x100000000ULL, 316 ram_above_4g); 317 e820_add_entry(0x100000000ULL, x86ms->above_4g_mem_size, E820_RAM); 318 } 319 320 fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, 321 &address_space_memory); 322 323 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, machine->smp.cpus); 324 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, machine->smp.max_cpus); 325 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size); 326 fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, 1); 327 fw_cfg_add_file(fw_cfg, "etc/e820", e820_table, 328 sizeof(struct e820_entry) * e820_get_num_entries()); 329 330 rom_set_fw(fw_cfg); 331 332 if (machine->kernel_filename != NULL) { 333 x86_load_linux(x86ms, fw_cfg, 0, true, false); 334 } 335 336 if (mms->option_roms) { 337 for (i = 0; i < nb_option_roms; i++) { 338 rom_add_option(option_rom[i].name, option_rom[i].bootindex); 339 } 340 } 341 342 x86ms->fw_cfg = fw_cfg; 343 x86ms->ioapic_as = &address_space_memory; 344 } 345 346 static gchar *microvm_get_mmio_cmdline(gchar *name, uint32_t virtio_irq_base) 347 { 348 gchar *cmdline; 349 gchar *separator; 350 long int index; 351 int ret; 352 353 separator = g_strrstr(name, "."); 354 if (!separator) { 355 return NULL; 356 } 357 358 if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) { 359 return NULL; 360 } 361 362 cmdline = g_malloc0(VIRTIO_CMDLINE_MAXLEN); 363 ret = g_snprintf(cmdline, VIRTIO_CMDLINE_MAXLEN, 364 " virtio_mmio.device=512@0x%lx:%ld", 365 VIRTIO_MMIO_BASE + index * 512, 366 virtio_irq_base + index); 367 if (ret < 0 || ret >= VIRTIO_CMDLINE_MAXLEN) { 368 g_free(cmdline); 369 return NULL; 370 } 371 372 return cmdline; 373 } 374 375 static void microvm_fix_kernel_cmdline(MachineState *machine) 376 { 377 X86MachineState *x86ms = X86_MACHINE(machine); 378 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 379 BusState *bus; 380 BusChild *kid; 381 char *cmdline; 382 383 /* 384 * Find MMIO transports with attached devices, and add them to the kernel 385 * command line. 386 * 387 * Yes, this is a hack, but one that heavily improves the UX without 388 * introducing any significant issues. 389 */ 390 cmdline = g_strdup(machine->kernel_cmdline); 391 bus = sysbus_get_default(); 392 QTAILQ_FOREACH(kid, &bus->children, sibling) { 393 DeviceState *dev = kid->child; 394 ObjectClass *class = object_get_class(OBJECT(dev)); 395 396 if (class == object_class_by_name(TYPE_VIRTIO_MMIO)) { 397 VirtIOMMIOProxy *mmio = VIRTIO_MMIO(OBJECT(dev)); 398 VirtioBusState *mmio_virtio_bus = &mmio->bus; 399 BusState *mmio_bus = &mmio_virtio_bus->parent_obj; 400 401 if (!QTAILQ_EMPTY(&mmio_bus->children)) { 402 gchar *mmio_cmdline = microvm_get_mmio_cmdline 403 (mmio_bus->name, mms->virtio_irq_base); 404 if (mmio_cmdline) { 405 char *newcmd = g_strjoin(NULL, cmdline, mmio_cmdline, NULL); 406 g_free(mmio_cmdline); 407 g_free(cmdline); 408 cmdline = newcmd; 409 } 410 } 411 } 412 } 413 414 fw_cfg_modify_i32(x86ms->fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(cmdline) + 1); 415 fw_cfg_modify_string(x86ms->fw_cfg, FW_CFG_CMDLINE_DATA, cmdline); 416 417 g_free(cmdline); 418 } 419 420 static void microvm_device_pre_plug_cb(HotplugHandler *hotplug_dev, 421 DeviceState *dev, Error **errp) 422 { 423 X86CPU *cpu = X86_CPU(dev); 424 425 cpu->host_phys_bits = true; /* need reliable phys-bits */ 426 x86_cpu_pre_plug(hotplug_dev, dev, errp); 427 } 428 429 static void microvm_device_plug_cb(HotplugHandler *hotplug_dev, 430 DeviceState *dev, Error **errp) 431 { 432 x86_cpu_plug(hotplug_dev, dev, errp); 433 } 434 435 static void microvm_device_unplug_request_cb(HotplugHandler *hotplug_dev, 436 DeviceState *dev, Error **errp) 437 { 438 error_setg(errp, "unplug not supported by microvm"); 439 } 440 441 static void microvm_device_unplug_cb(HotplugHandler *hotplug_dev, 442 DeviceState *dev, Error **errp) 443 { 444 error_setg(errp, "unplug not supported by microvm"); 445 } 446 447 static HotplugHandler *microvm_get_hotplug_handler(MachineState *machine, 448 DeviceState *dev) 449 { 450 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 451 return HOTPLUG_HANDLER(machine); 452 } 453 return NULL; 454 } 455 456 static void microvm_machine_state_init(MachineState *machine) 457 { 458 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 459 X86MachineState *x86ms = X86_MACHINE(machine); 460 461 microvm_memory_init(mms); 462 463 x86_cpus_init(x86ms, CPU_VERSION_LATEST); 464 465 microvm_devices_init(mms); 466 } 467 468 static void microvm_machine_reset(MachineState *machine, ShutdownCause reason) 469 { 470 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 471 CPUState *cs; 472 X86CPU *cpu; 473 474 if (!x86_machine_is_acpi_enabled(X86_MACHINE(machine)) && 475 machine->kernel_filename != NULL && 476 mms->auto_kernel_cmdline && !mms->kernel_cmdline_fixed) { 477 microvm_fix_kernel_cmdline(machine); 478 mms->kernel_cmdline_fixed = true; 479 } 480 481 qemu_devices_reset(reason); 482 483 CPU_FOREACH(cs) { 484 cpu = X86_CPU(cs); 485 486 x86_cpu_after_reset(cpu); 487 } 488 } 489 490 static void microvm_machine_get_rtc(Object *obj, Visitor *v, const char *name, 491 void *opaque, Error **errp) 492 { 493 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 494 OnOffAuto rtc = mms->rtc; 495 496 visit_type_OnOffAuto(v, name, &rtc, errp); 497 } 498 499 static void microvm_machine_set_rtc(Object *obj, Visitor *v, const char *name, 500 void *opaque, Error **errp) 501 { 502 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 503 504 visit_type_OnOffAuto(v, name, &mms->rtc, errp); 505 } 506 507 static void microvm_machine_get_pcie(Object *obj, Visitor *v, const char *name, 508 void *opaque, Error **errp) 509 { 510 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 511 OnOffAuto pcie = mms->pcie; 512 513 visit_type_OnOffAuto(v, name, &pcie, errp); 514 } 515 516 static void microvm_machine_set_pcie(Object *obj, Visitor *v, const char *name, 517 void *opaque, Error **errp) 518 { 519 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 520 521 visit_type_OnOffAuto(v, name, &mms->pcie, errp); 522 } 523 524 static void microvm_machine_get_ioapic2(Object *obj, Visitor *v, const char *name, 525 void *opaque, Error **errp) 526 { 527 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 528 OnOffAuto ioapic2 = mms->ioapic2; 529 530 visit_type_OnOffAuto(v, name, &ioapic2, errp); 531 } 532 533 static void microvm_machine_set_ioapic2(Object *obj, Visitor *v, const char *name, 534 void *opaque, Error **errp) 535 { 536 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 537 538 visit_type_OnOffAuto(v, name, &mms->ioapic2, errp); 539 } 540 541 static bool microvm_machine_get_isa_serial(Object *obj, Error **errp) 542 { 543 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 544 545 return mms->isa_serial; 546 } 547 548 static void microvm_machine_set_isa_serial(Object *obj, bool value, 549 Error **errp) 550 { 551 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 552 553 mms->isa_serial = value; 554 } 555 556 static bool microvm_machine_get_option_roms(Object *obj, Error **errp) 557 { 558 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 559 560 return mms->option_roms; 561 } 562 563 static void microvm_machine_set_option_roms(Object *obj, bool value, 564 Error **errp) 565 { 566 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 567 568 mms->option_roms = value; 569 } 570 571 static bool microvm_machine_get_auto_kernel_cmdline(Object *obj, Error **errp) 572 { 573 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 574 575 return mms->auto_kernel_cmdline; 576 } 577 578 static void microvm_machine_set_auto_kernel_cmdline(Object *obj, bool value, 579 Error **errp) 580 { 581 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 582 583 mms->auto_kernel_cmdline = value; 584 } 585 586 static void microvm_machine_done(Notifier *notifier, void *data) 587 { 588 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 589 machine_done); 590 591 acpi_setup_microvm(mms); 592 dt_setup_microvm(mms); 593 } 594 595 static void microvm_powerdown_req(Notifier *notifier, void *data) 596 { 597 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 598 powerdown_req); 599 X86MachineState *x86ms = X86_MACHINE(mms); 600 601 if (x86ms->acpi_dev) { 602 Object *obj = OBJECT(x86ms->acpi_dev); 603 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 604 adevc->send_event(ACPI_DEVICE_IF(x86ms->acpi_dev), 605 ACPI_POWER_DOWN_STATUS); 606 } 607 } 608 609 static void microvm_machine_initfn(Object *obj) 610 { 611 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 612 613 /* Configuration */ 614 mms->rtc = ON_OFF_AUTO_AUTO; 615 mms->pcie = ON_OFF_AUTO_AUTO; 616 mms->ioapic2 = ON_OFF_AUTO_AUTO; 617 mms->isa_serial = true; 618 mms->option_roms = true; 619 mms->auto_kernel_cmdline = true; 620 621 /* State */ 622 mms->kernel_cmdline_fixed = false; 623 624 mms->machine_done.notify = microvm_machine_done; 625 qemu_add_machine_init_done_notifier(&mms->machine_done); 626 mms->powerdown_req.notify = microvm_powerdown_req; 627 qemu_register_powerdown_notifier(&mms->powerdown_req); 628 } 629 630 GlobalProperty microvm_properties[] = { 631 /* 632 * pcie host bridge (gpex) on microvm has no io address window, 633 * so reserving io space is not going to work. Turn it off. 634 */ 635 { "pcie-root-port", "io-reserve", "0" }, 636 }; 637 638 static void microvm_class_init(ObjectClass *oc, void *data) 639 { 640 X86MachineClass *x86mc = X86_MACHINE_CLASS(oc); 641 MachineClass *mc = MACHINE_CLASS(oc); 642 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 643 644 mc->init = microvm_machine_state_init; 645 646 mc->family = "microvm_i386"; 647 mc->desc = "microvm (i386)"; 648 mc->units_per_default_bus = 1; 649 mc->no_floppy = 1; 650 mc->max_cpus = 288; 651 mc->has_hotpluggable_cpus = false; 652 mc->auto_enable_numa_with_memhp = false; 653 mc->auto_enable_numa_with_memdev = false; 654 mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; 655 mc->nvdimm_supported = false; 656 mc->default_ram_id = "microvm.ram"; 657 658 /* Avoid relying too much on kernel components */ 659 mc->default_kernel_irqchip_split = true; 660 661 /* Machine class handlers */ 662 mc->reset = microvm_machine_reset; 663 664 /* hotplug (for cpu coldplug) */ 665 mc->get_hotplug_handler = microvm_get_hotplug_handler; 666 hc->pre_plug = microvm_device_pre_plug_cb; 667 hc->plug = microvm_device_plug_cb; 668 hc->unplug_request = microvm_device_unplug_request_cb; 669 hc->unplug = microvm_device_unplug_cb; 670 671 x86mc->fwcfg_dma_enabled = true; 672 673 object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto", 674 microvm_machine_get_rtc, 675 microvm_machine_set_rtc, 676 NULL, NULL); 677 object_class_property_set_description(oc, MICROVM_MACHINE_RTC, 678 "Enable MC146818 RTC"); 679 680 object_class_property_add(oc, MICROVM_MACHINE_PCIE, "OnOffAuto", 681 microvm_machine_get_pcie, 682 microvm_machine_set_pcie, 683 NULL, NULL); 684 object_class_property_set_description(oc, MICROVM_MACHINE_PCIE, 685 "Enable PCIe"); 686 687 object_class_property_add(oc, MICROVM_MACHINE_IOAPIC2, "OnOffAuto", 688 microvm_machine_get_ioapic2, 689 microvm_machine_set_ioapic2, 690 NULL, NULL); 691 object_class_property_set_description(oc, MICROVM_MACHINE_IOAPIC2, 692 "Enable second IO-APIC"); 693 694 object_class_property_add_bool(oc, MICROVM_MACHINE_ISA_SERIAL, 695 microvm_machine_get_isa_serial, 696 microvm_machine_set_isa_serial); 697 object_class_property_set_description(oc, MICROVM_MACHINE_ISA_SERIAL, 698 "Set off to disable the instantiation an ISA serial port"); 699 700 object_class_property_add_bool(oc, MICROVM_MACHINE_OPTION_ROMS, 701 microvm_machine_get_option_roms, 702 microvm_machine_set_option_roms); 703 object_class_property_set_description(oc, MICROVM_MACHINE_OPTION_ROMS, 704 "Set off to disable loading option ROMs"); 705 706 object_class_property_add_bool(oc, MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 707 microvm_machine_get_auto_kernel_cmdline, 708 microvm_machine_set_auto_kernel_cmdline); 709 object_class_property_set_description(oc, 710 MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 711 "Set off to disable adding virtio-mmio devices to the kernel cmdline"); 712 713 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); 714 715 compat_props_add(mc->compat_props, microvm_properties, 716 G_N_ELEMENTS(microvm_properties)); 717 } 718 719 static const TypeInfo microvm_machine_info = { 720 .name = TYPE_MICROVM_MACHINE, 721 .parent = TYPE_X86_MACHINE, 722 .instance_size = sizeof(MicrovmMachineState), 723 .instance_init = microvm_machine_initfn, 724 .class_size = sizeof(MicrovmMachineClass), 725 .class_init = microvm_class_init, 726 .interfaces = (InterfaceInfo[]) { 727 { TYPE_HOTPLUG_HANDLER }, 728 { } 729 }, 730 }; 731 732 static void microvm_machine_init(void) 733 { 734 type_register_static(µvm_machine_info); 735 } 736 type_init(microvm_machine_init);