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/i386/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, MC146818RtcState *s) 61 { 62 X86MachineState *x86ms = X86_MACHINE(mms); 63 int val; 64 65 val = MIN(x86ms->below_4g_mem_size / KiB, 640); 66 mc146818rtc_set_cmos_data(s, 0x15, val); 67 mc146818rtc_set_cmos_data(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 mc146818rtc_set_cmos_data(s, 0x17, val); 78 mc146818rtc_set_cmos_data(s, 0x18, val >> 8); 79 mc146818rtc_set_cmos_data(s, 0x30, val); 80 mc146818rtc_set_cmos_data(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 mc146818rtc_set_cmos_data(s, 0x34, val); 91 mc146818rtc_set_cmos_data(s, 0x35, val >> 8); 92 /* memory above 4GiB */ 93 val = x86ms->above_4g_mem_size / 65536; 94 mc146818rtc_set_cmos_data(s, 0x5b, val); 95 mc146818rtc_set_cmos_data(s, 0x5c, val >> 8); 96 mc146818rtc_set_cmos_data(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 GSIState *gsi_state; 165 int ioapics; 166 int i; 167 168 /* Core components */ 169 ioapics = microvm_ioapics(mms); 170 gsi_state = g_malloc0(sizeof(*gsi_state)); 171 x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, 172 IOAPIC_NUM_PINS * ioapics); 173 174 isa_bus = isa_bus_new(NULL, get_system_memory(), get_system_io(), 175 &error_abort); 176 isa_bus_register_input_irqs(isa_bus, x86ms->gsi); 177 178 ioapic_init_gsi(gsi_state, "machine"); 179 if (ioapics > 1) { 180 x86ms->ioapic2 = ioapic_init_secondary(gsi_state); 181 } 182 183 if (kvm_enabled()) { 184 kvmclock_create(true); 185 } 186 187 mms->virtio_irq_base = 5; 188 mms->virtio_num_transports = 8; 189 if (x86ms->ioapic2) { 190 mms->pcie_irq_base = 16; /* 16 -> 19 */ 191 /* use second ioapic (24 -> 47) for virtio-mmio irq lines */ 192 mms->virtio_irq_base = IO_APIC_SECONDARY_IRQBASE; 193 mms->virtio_num_transports = IOAPIC_NUM_PINS; 194 } else if (x86_machine_is_acpi_enabled(x86ms)) { 195 mms->pcie_irq_base = 12; /* 12 -> 15 */ 196 mms->virtio_irq_base = 16; /* 16 -> 23 */ 197 } 198 199 for (i = 0; i < mms->virtio_num_transports; i++) { 200 sysbus_create_simple("virtio-mmio", 201 VIRTIO_MMIO_BASE + i * 512, 202 x86ms->gsi[mms->virtio_irq_base + i]); 203 } 204 205 /* Optional and legacy devices */ 206 if (x86_machine_is_acpi_enabled(x86ms)) { 207 DeviceState *dev = qdev_new(TYPE_ACPI_GED); 208 qdev_prop_set_uint32(dev, "ged-event", ACPI_GED_PWR_DOWN_EVT); 209 sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); 210 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, GED_MMIO_BASE); 211 /* sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, GED_MMIO_BASE_MEMHP); */ 212 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, GED_MMIO_BASE_REGS); 213 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 214 x86ms->gsi[GED_MMIO_IRQ]); 215 x86ms->acpi_dev = HOTPLUG_HANDLER(dev); 216 } 217 218 if (x86_machine_is_acpi_enabled(x86ms) && machine_usb(MACHINE(mms))) { 219 DeviceState *dev = qdev_new(TYPE_XHCI_SYSBUS); 220 qdev_prop_set_uint32(dev, "intrs", 1); 221 qdev_prop_set_uint32(dev, "slots", XHCI_MAXSLOTS); 222 qdev_prop_set_uint32(dev, "p2", 8); 223 qdev_prop_set_uint32(dev, "p3", 8); 224 sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal); 225 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, MICROVM_XHCI_BASE); 226 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, 227 x86ms->gsi[MICROVM_XHCI_IRQ]); 228 } 229 230 if (x86_machine_is_acpi_enabled(x86ms) && mms->pcie == ON_OFF_AUTO_ON) { 231 /* use topmost 25% of the address space available */ 232 hwaddr phys_size = (hwaddr)1 << X86_CPU(first_cpu)->phys_bits; 233 if (phys_size > 0x1000000ll) { 234 mms->gpex.mmio64.size = phys_size / 4; 235 mms->gpex.mmio64.base = phys_size - mms->gpex.mmio64.size; 236 } 237 mms->gpex.mmio32.base = PCIE_MMIO_BASE; 238 mms->gpex.mmio32.size = PCIE_MMIO_SIZE; 239 mms->gpex.ecam.base = PCIE_ECAM_BASE; 240 mms->gpex.ecam.size = PCIE_ECAM_SIZE; 241 mms->gpex.irq = mms->pcie_irq_base; 242 create_gpex(mms); 243 x86ms->pci_irq_mask = ((1 << (mms->pcie_irq_base + 0)) | 244 (1 << (mms->pcie_irq_base + 1)) | 245 (1 << (mms->pcie_irq_base + 2)) | 246 (1 << (mms->pcie_irq_base + 3))); 247 } else { 248 x86ms->pci_irq_mask = 0; 249 } 250 251 if (x86ms->pic == ON_OFF_AUTO_ON || x86ms->pic == ON_OFF_AUTO_AUTO) { 252 qemu_irq *i8259; 253 254 i8259 = i8259_init(isa_bus, x86_allocate_cpu_irq()); 255 for (i = 0; i < ISA_NUM_IRQS; i++) { 256 gsi_state->i8259_irq[i] = i8259[i]; 257 } 258 g_free(i8259); 259 } 260 261 if (x86ms->pit == ON_OFF_AUTO_ON || x86ms->pit == ON_OFF_AUTO_AUTO) { 262 if (kvm_pit_in_kernel()) { 263 kvm_pit_init(isa_bus, 0x40); 264 } else { 265 i8254_pit_init(isa_bus, 0x40, 0, NULL); 266 } 267 } 268 269 if (mms->rtc == ON_OFF_AUTO_ON || 270 (mms->rtc == ON_OFF_AUTO_AUTO && !kvm_enabled())) { 271 microvm_set_rtc(mms, mc146818_rtc_init(isa_bus, 2000, NULL)); 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); 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; 394 395 if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO)) { 396 VirtIOMMIOProxy *mmio = VIRTIO_MMIO(OBJECT(dev)); 397 VirtioBusState *mmio_virtio_bus = &mmio->bus; 398 BusState *mmio_bus = &mmio_virtio_bus->parent_obj; 399 400 if (!QTAILQ_EMPTY(&mmio_bus->children)) { 401 gchar *mmio_cmdline = microvm_get_mmio_cmdline 402 (mmio_bus->name, mms->virtio_irq_base); 403 if (mmio_cmdline) { 404 char *newcmd = g_strjoin(NULL, cmdline, mmio_cmdline, NULL); 405 g_free(mmio_cmdline); 406 g_free(cmdline); 407 cmdline = newcmd; 408 } 409 } 410 } 411 } 412 413 fw_cfg_modify_i32(x86ms->fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(cmdline) + 1); 414 fw_cfg_modify_string(x86ms->fw_cfg, FW_CFG_CMDLINE_DATA, cmdline); 415 416 g_free(cmdline); 417 } 418 419 static void microvm_device_pre_plug_cb(HotplugHandler *hotplug_dev, 420 DeviceState *dev, Error **errp) 421 { 422 X86CPU *cpu = X86_CPU(dev); 423 424 cpu->host_phys_bits = true; /* need reliable phys-bits */ 425 x86_cpu_pre_plug(hotplug_dev, dev, errp); 426 } 427 428 static void microvm_device_plug_cb(HotplugHandler *hotplug_dev, 429 DeviceState *dev, Error **errp) 430 { 431 x86_cpu_plug(hotplug_dev, dev, errp); 432 } 433 434 static void microvm_device_unplug_request_cb(HotplugHandler *hotplug_dev, 435 DeviceState *dev, Error **errp) 436 { 437 error_setg(errp, "unplug not supported by microvm"); 438 } 439 440 static void microvm_device_unplug_cb(HotplugHandler *hotplug_dev, 441 DeviceState *dev, Error **errp) 442 { 443 error_setg(errp, "unplug not supported by microvm"); 444 } 445 446 static HotplugHandler *microvm_get_hotplug_handler(MachineState *machine, 447 DeviceState *dev) 448 { 449 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 450 return HOTPLUG_HANDLER(machine); 451 } 452 return NULL; 453 } 454 455 static void microvm_machine_state_init(MachineState *machine) 456 { 457 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 458 X86MachineState *x86ms = X86_MACHINE(machine); 459 460 microvm_memory_init(mms); 461 462 x86_cpus_init(x86ms, CPU_VERSION_LATEST); 463 464 microvm_devices_init(mms); 465 } 466 467 static void microvm_machine_reset(MachineState *machine, ShutdownCause reason) 468 { 469 MicrovmMachineState *mms = MICROVM_MACHINE(machine); 470 CPUState *cs; 471 X86CPU *cpu; 472 473 if (!x86_machine_is_acpi_enabled(X86_MACHINE(machine)) && 474 machine->kernel_filename != NULL && 475 mms->auto_kernel_cmdline && !mms->kernel_cmdline_fixed) { 476 microvm_fix_kernel_cmdline(machine); 477 mms->kernel_cmdline_fixed = true; 478 } 479 480 qemu_devices_reset(reason); 481 482 CPU_FOREACH(cs) { 483 cpu = X86_CPU(cs); 484 485 x86_cpu_after_reset(cpu); 486 } 487 } 488 489 static void microvm_machine_get_rtc(Object *obj, Visitor *v, const char *name, 490 void *opaque, Error **errp) 491 { 492 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 493 OnOffAuto rtc = mms->rtc; 494 495 visit_type_OnOffAuto(v, name, &rtc, errp); 496 } 497 498 static void microvm_machine_set_rtc(Object *obj, Visitor *v, const char *name, 499 void *opaque, Error **errp) 500 { 501 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 502 503 visit_type_OnOffAuto(v, name, &mms->rtc, errp); 504 } 505 506 static void microvm_machine_get_pcie(Object *obj, Visitor *v, const char *name, 507 void *opaque, Error **errp) 508 { 509 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 510 OnOffAuto pcie = mms->pcie; 511 512 visit_type_OnOffAuto(v, name, &pcie, errp); 513 } 514 515 static void microvm_machine_set_pcie(Object *obj, Visitor *v, const char *name, 516 void *opaque, Error **errp) 517 { 518 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 519 520 visit_type_OnOffAuto(v, name, &mms->pcie, errp); 521 } 522 523 static void microvm_machine_get_ioapic2(Object *obj, Visitor *v, const char *name, 524 void *opaque, Error **errp) 525 { 526 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 527 OnOffAuto ioapic2 = mms->ioapic2; 528 529 visit_type_OnOffAuto(v, name, &ioapic2, errp); 530 } 531 532 static void microvm_machine_set_ioapic2(Object *obj, Visitor *v, const char *name, 533 void *opaque, Error **errp) 534 { 535 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 536 537 visit_type_OnOffAuto(v, name, &mms->ioapic2, errp); 538 } 539 540 static bool microvm_machine_get_isa_serial(Object *obj, Error **errp) 541 { 542 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 543 544 return mms->isa_serial; 545 } 546 547 static void microvm_machine_set_isa_serial(Object *obj, bool value, 548 Error **errp) 549 { 550 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 551 552 mms->isa_serial = value; 553 } 554 555 static bool microvm_machine_get_option_roms(Object *obj, Error **errp) 556 { 557 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 558 559 return mms->option_roms; 560 } 561 562 static void microvm_machine_set_option_roms(Object *obj, bool value, 563 Error **errp) 564 { 565 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 566 567 mms->option_roms = value; 568 } 569 570 static bool microvm_machine_get_auto_kernel_cmdline(Object *obj, Error **errp) 571 { 572 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 573 574 return mms->auto_kernel_cmdline; 575 } 576 577 static void microvm_machine_set_auto_kernel_cmdline(Object *obj, bool value, 578 Error **errp) 579 { 580 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 581 582 mms->auto_kernel_cmdline = value; 583 } 584 585 static void microvm_machine_done(Notifier *notifier, void *data) 586 { 587 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 588 machine_done); 589 590 acpi_setup_microvm(mms); 591 dt_setup_microvm(mms); 592 } 593 594 static void microvm_powerdown_req(Notifier *notifier, void *data) 595 { 596 MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState, 597 powerdown_req); 598 X86MachineState *x86ms = X86_MACHINE(mms); 599 600 if (x86ms->acpi_dev) { 601 Object *obj = OBJECT(x86ms->acpi_dev); 602 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 603 adevc->send_event(ACPI_DEVICE_IF(x86ms->acpi_dev), 604 ACPI_POWER_DOWN_STATUS); 605 } 606 } 607 608 static void microvm_machine_initfn(Object *obj) 609 { 610 MicrovmMachineState *mms = MICROVM_MACHINE(obj); 611 612 /* Configuration */ 613 mms->rtc = ON_OFF_AUTO_AUTO; 614 mms->pcie = ON_OFF_AUTO_AUTO; 615 mms->ioapic2 = ON_OFF_AUTO_AUTO; 616 mms->isa_serial = true; 617 mms->option_roms = true; 618 mms->auto_kernel_cmdline = true; 619 620 /* State */ 621 mms->kernel_cmdline_fixed = false; 622 623 mms->machine_done.notify = microvm_machine_done; 624 qemu_add_machine_init_done_notifier(&mms->machine_done); 625 mms->powerdown_req.notify = microvm_powerdown_req; 626 qemu_register_powerdown_notifier(&mms->powerdown_req); 627 } 628 629 GlobalProperty microvm_properties[] = { 630 /* 631 * pcie host bridge (gpex) on microvm has no io address window, 632 * so reserving io space is not going to work. Turn it off. 633 */ 634 { "pcie-root-port", "io-reserve", "0" }, 635 }; 636 637 static void microvm_class_init(ObjectClass *oc, void *data) 638 { 639 X86MachineClass *x86mc = X86_MACHINE_CLASS(oc); 640 MachineClass *mc = MACHINE_CLASS(oc); 641 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 642 643 mc->init = microvm_machine_state_init; 644 645 mc->family = "microvm_i386"; 646 mc->desc = "microvm (i386)"; 647 mc->units_per_default_bus = 1; 648 mc->no_floppy = 1; 649 mc->max_cpus = 288; 650 mc->has_hotpluggable_cpus = false; 651 mc->auto_enable_numa_with_memhp = false; 652 mc->auto_enable_numa_with_memdev = false; 653 mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; 654 mc->nvdimm_supported = false; 655 mc->default_ram_id = "microvm.ram"; 656 657 /* Avoid relying too much on kernel components */ 658 mc->default_kernel_irqchip_split = true; 659 660 /* Machine class handlers */ 661 mc->reset = microvm_machine_reset; 662 663 /* hotplug (for cpu coldplug) */ 664 mc->get_hotplug_handler = microvm_get_hotplug_handler; 665 hc->pre_plug = microvm_device_pre_plug_cb; 666 hc->plug = microvm_device_plug_cb; 667 hc->unplug_request = microvm_device_unplug_request_cb; 668 hc->unplug = microvm_device_unplug_cb; 669 670 x86mc->fwcfg_dma_enabled = true; 671 672 object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto", 673 microvm_machine_get_rtc, 674 microvm_machine_set_rtc, 675 NULL, NULL); 676 object_class_property_set_description(oc, MICROVM_MACHINE_RTC, 677 "Enable MC146818 RTC"); 678 679 object_class_property_add(oc, MICROVM_MACHINE_PCIE, "OnOffAuto", 680 microvm_machine_get_pcie, 681 microvm_machine_set_pcie, 682 NULL, NULL); 683 object_class_property_set_description(oc, MICROVM_MACHINE_PCIE, 684 "Enable PCIe"); 685 686 object_class_property_add(oc, MICROVM_MACHINE_IOAPIC2, "OnOffAuto", 687 microvm_machine_get_ioapic2, 688 microvm_machine_set_ioapic2, 689 NULL, NULL); 690 object_class_property_set_description(oc, MICROVM_MACHINE_IOAPIC2, 691 "Enable second IO-APIC"); 692 693 object_class_property_add_bool(oc, MICROVM_MACHINE_ISA_SERIAL, 694 microvm_machine_get_isa_serial, 695 microvm_machine_set_isa_serial); 696 object_class_property_set_description(oc, MICROVM_MACHINE_ISA_SERIAL, 697 "Set off to disable the instantiation an ISA serial port"); 698 699 object_class_property_add_bool(oc, MICROVM_MACHINE_OPTION_ROMS, 700 microvm_machine_get_option_roms, 701 microvm_machine_set_option_roms); 702 object_class_property_set_description(oc, MICROVM_MACHINE_OPTION_ROMS, 703 "Set off to disable loading option ROMs"); 704 705 object_class_property_add_bool(oc, MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 706 microvm_machine_get_auto_kernel_cmdline, 707 microvm_machine_set_auto_kernel_cmdline); 708 object_class_property_set_description(oc, 709 MICROVM_MACHINE_AUTO_KERNEL_CMDLINE, 710 "Set off to disable adding virtio-mmio devices to the kernel cmdline"); 711 712 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); 713 714 compat_props_add(mc->compat_props, microvm_properties, 715 G_N_ELEMENTS(microvm_properties)); 716 } 717 718 static const TypeInfo microvm_machine_info = { 719 .name = TYPE_MICROVM_MACHINE, 720 .parent = TYPE_X86_MACHINE, 721 .instance_size = sizeof(MicrovmMachineState), 722 .instance_init = microvm_machine_initfn, 723 .class_size = sizeof(MicrovmMachineClass), 724 .class_init = microvm_class_init, 725 .interfaces = (InterfaceInfo[]) { 726 { TYPE_HOTPLUG_HANDLER }, 727 { } 728 }, 729 }; 730 731 static void microvm_machine_init(void) 732 { 733 type_register_static(µvm_machine_info); 734 } 735 type_init(microvm_machine_init); 736