xref: /openbmc/qemu/hw/i386/pc_piix.c (revision 2f95279a)
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 "qemu/osdep.h"
26 #include CONFIG_DEVICES
27 
28 #include "qemu/units.h"
29 #include "hw/char/parallel-isa.h"
30 #include "hw/dma/i8257.h"
31 #include "hw/loader.h"
32 #include "hw/i386/x86.h"
33 #include "hw/i386/pc.h"
34 #include "hw/i386/apic.h"
35 #include "hw/pci-host/i440fx.h"
36 #include "hw/rtc/mc146818rtc.h"
37 #include "hw/southbridge/piix.h"
38 #include "hw/display/ramfb.h"
39 #include "hw/pci/pci.h"
40 #include "hw/pci/pci_ids.h"
41 #include "hw/usb.h"
42 #include "net/net.h"
43 #include "hw/ide/isa.h"
44 #include "hw/ide/pci.h"
45 #include "hw/irq.h"
46 #include "sysemu/kvm.h"
47 #include "hw/i386/kvm/clock.h"
48 #include "hw/sysbus.h"
49 #include "hw/i2c/smbus_eeprom.h"
50 #include "exec/memory.h"
51 #include "hw/acpi/acpi.h"
52 #include "qapi/error.h"
53 #include "qemu/error-report.h"
54 #include "sysemu/xen.h"
55 #ifdef CONFIG_XEN
56 #include <xen/hvm/hvm_info_table.h>
57 #include "hw/xen/xen_pt.h"
58 #include "hw/xen/xen_igd.h"
59 #endif
60 #include "hw/xen/xen-x86.h"
61 #include "hw/xen/xen.h"
62 #include "migration/global_state.h"
63 #include "migration/misc.h"
64 #include "sysemu/runstate.h"
65 #include "sysemu/numa.h"
66 #include "hw/hyperv/vmbus-bridge.h"
67 #include "hw/mem/nvdimm.h"
68 #include "hw/i386/acpi-build.h"
69 #include "target/i386/cpu.h"
70 
71 #define XEN_IOAPIC_NUM_PIRQS 128ULL
72 
73 #ifdef CONFIG_IDE_ISA
74 static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
75 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
76 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
77 #endif
78 
79 /*
80  * Return the global irq number corresponding to a given device irq
81  * pin. We could also use the bus number to have a more precise mapping.
82  */
83 static int pc_pci_slot_get_pirq(PCIDevice *pci_dev, int pci_intx)
84 {
85     int slot_addend;
86     slot_addend = PCI_SLOT(pci_dev->devfn) - 1;
87     return (pci_intx + slot_addend) & 3;
88 }
89 
90 static void piix_intx_routing_notifier_xen(PCIDevice *dev)
91 {
92     int i;
93 
94     /* Scan for updates to PCI link routes. */
95     for (i = 0; i < PIIX_NUM_PIRQS; i++) {
96         const PCIINTxRoute route = pci_device_route_intx_to_irq(dev, i);
97         const uint8_t v = route.mode == PCI_INTX_ENABLED ? route.irq : 0;
98         xen_set_pci_link_route(i, v);
99     }
100 }
101 
102 /* PC hardware initialisation */
103 static void pc_init1(MachineState *machine, const char *pci_type)
104 {
105     PCMachineState *pcms = PC_MACHINE(machine);
106     PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
107     X86MachineState *x86ms = X86_MACHINE(machine);
108     MemoryRegion *system_memory = get_system_memory();
109     MemoryRegion *system_io = get_system_io();
110     Object *phb = NULL;
111     ISABus *isa_bus;
112     Object *piix4_pm = NULL;
113     qemu_irq smi_irq;
114     GSIState *gsi_state;
115     MemoryRegion *ram_memory;
116     MemoryRegion *pci_memory = NULL;
117     MemoryRegion *rom_memory = system_memory;
118     ram_addr_t lowmem;
119     uint64_t hole64_size = 0;
120 
121     /*
122      * Calculate ram split, for memory below and above 4G.  It's a bit
123      * complicated for backward compatibility reasons ...
124      *
125      *  - Traditional split is 3.5G (lowmem = 0xe0000000).  This is the
126      *    default value for max_ram_below_4g now.
127      *
128      *  - Then, to gigabyte align the memory, we move the split to 3G
129      *    (lowmem = 0xc0000000).  But only in case we have to split in
130      *    the first place, i.e. ram_size is larger than (traditional)
131      *    lowmem.  And for new machine types (gigabyte_align = true)
132      *    only, for live migration compatibility reasons.
133      *
134      *  - Next the max-ram-below-4g option was added, which allowed to
135      *    reduce lowmem to a smaller value, to allow a larger PCI I/O
136      *    window below 4G.  qemu doesn't enforce gigabyte alignment here,
137      *    but prints a warning.
138      *
139      *  - Finally max-ram-below-4g got updated to also allow raising lowmem,
140      *    so legacy non-PAE guests can get as much memory as possible in
141      *    the 32bit address space below 4G.
142      *
143      *  - Note that Xen has its own ram setup code in xen_ram_init(),
144      *    called via xen_hvm_init_pc().
145      *
146      * Examples:
147      *    qemu -M pc-1.7 -m 4G    (old default)    -> 3584M low,  512M high
148      *    qemu -M pc -m 4G        (new default)    -> 3072M low, 1024M high
149      *    qemu -M pc,max-ram-below-4g=2G -m 4G     -> 2048M low, 2048M high
150      *    qemu -M pc,max-ram-below-4g=4G -m 3968M  -> 3968M low (=4G-128M)
151      */
152     if (xen_enabled()) {
153         xen_hvm_init_pc(pcms, &ram_memory);
154     } else {
155         ram_memory = machine->ram;
156         if (!pcms->max_ram_below_4g) {
157             pcms->max_ram_below_4g = 0xe0000000; /* default: 3.5G */
158         }
159         lowmem = pcms->max_ram_below_4g;
160         if (machine->ram_size >= pcms->max_ram_below_4g) {
161             if (pcmc->gigabyte_align) {
162                 if (lowmem > 0xc0000000) {
163                     lowmem = 0xc0000000;
164                 }
165                 if (lowmem & (1 * GiB - 1)) {
166                     warn_report("Large machine and max_ram_below_4g "
167                                 "(%" PRIu64 ") not a multiple of 1G; "
168                                 "possible bad performance.",
169                                 pcms->max_ram_below_4g);
170                 }
171             }
172         }
173 
174         if (machine->ram_size >= lowmem) {
175             x86ms->above_4g_mem_size = machine->ram_size - lowmem;
176             x86ms->below_4g_mem_size = lowmem;
177         } else {
178             x86ms->above_4g_mem_size = 0;
179             x86ms->below_4g_mem_size = machine->ram_size;
180         }
181     }
182 
183     pc_machine_init_sgx_epc(pcms);
184     x86_cpus_init(x86ms, pcmc->default_cpu_version);
185 
186     if (kvm_enabled()) {
187         kvmclock_create(pcmc->kvmclock_create_always);
188     }
189 
190     if (pcmc->pci_enabled) {
191         pci_memory = g_new(MemoryRegion, 1);
192         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
193         rom_memory = pci_memory;
194 
195         phb = OBJECT(qdev_new(TYPE_I440FX_PCI_HOST_BRIDGE));
196         object_property_add_child(OBJECT(machine), "i440fx", phb);
197         object_property_set_link(phb, PCI_HOST_PROP_RAM_MEM,
198                                  OBJECT(ram_memory), &error_fatal);
199         object_property_set_link(phb, PCI_HOST_PROP_PCI_MEM,
200                                  OBJECT(pci_memory), &error_fatal);
201         object_property_set_link(phb, PCI_HOST_PROP_SYSTEM_MEM,
202                                  OBJECT(system_memory), &error_fatal);
203         object_property_set_link(phb, PCI_HOST_PROP_IO_MEM,
204                                  OBJECT(system_io), &error_fatal);
205         object_property_set_uint(phb, PCI_HOST_BELOW_4G_MEM_SIZE,
206                                  x86ms->below_4g_mem_size, &error_fatal);
207         object_property_set_uint(phb, PCI_HOST_ABOVE_4G_MEM_SIZE,
208                                  x86ms->above_4g_mem_size, &error_fatal);
209         object_property_set_str(phb, I440FX_HOST_PROP_PCI_TYPE, pci_type,
210                                 &error_fatal);
211         sysbus_realize_and_unref(SYS_BUS_DEVICE(phb), &error_fatal);
212 
213         pcms->pcibus = PCI_BUS(qdev_get_child_bus(DEVICE(phb), "pci.0"));
214         pci_bus_map_irqs(pcms->pcibus,
215                          xen_enabled() ? xen_pci_slot_get_pirq
216                                        : pc_pci_slot_get_pirq);
217 
218         hole64_size = object_property_get_uint(phb,
219                                                PCI_HOST_PROP_PCI_HOLE64_SIZE,
220                                                &error_abort);
221     }
222 
223     /* allocate ram and load rom/bios */
224     if (!xen_enabled()) {
225         pc_memory_init(pcms, system_memory, rom_memory, hole64_size);
226     } else {
227         assert(machine->ram_size == x86ms->below_4g_mem_size +
228                                     x86ms->above_4g_mem_size);
229 
230         pc_system_flash_cleanup_unused(pcms);
231         if (machine->kernel_filename != NULL) {
232             /* For xen HVM direct kernel boot, load linux here */
233             xen_load_linux(pcms);
234         }
235     }
236 
237     gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
238 
239     if (pcmc->pci_enabled) {
240         PCIDevice *pci_dev;
241         DeviceState *dev;
242         size_t i;
243 
244         pci_dev = pci_new_multifunction(-1, pcms->south_bridge);
245         object_property_set_bool(OBJECT(pci_dev), "has-usb",
246                                  machine_usb(machine), &error_abort);
247         object_property_set_bool(OBJECT(pci_dev), "has-acpi",
248                                  x86_machine_is_acpi_enabled(x86ms),
249                                  &error_abort);
250         object_property_set_bool(OBJECT(pci_dev), "has-pic", false,
251                                  &error_abort);
252         object_property_set_bool(OBJECT(pci_dev), "has-pit", false,
253                                  &error_abort);
254         qdev_prop_set_uint32(DEVICE(pci_dev), "smb_io_base", 0xb100);
255         object_property_set_bool(OBJECT(pci_dev), "smm-enabled",
256                                  x86_machine_is_smm_enabled(x86ms),
257                                  &error_abort);
258         dev = DEVICE(pci_dev);
259         for (i = 0; i < ISA_NUM_IRQS; i++) {
260             qdev_connect_gpio_out_named(dev, "isa-irqs", i, x86ms->gsi[i]);
261         }
262         pci_realize_and_unref(pci_dev, pcms->pcibus, &error_fatal);
263 
264         if (xen_enabled()) {
265             pci_device_set_intx_routing_notifier(
266                         pci_dev, piix_intx_routing_notifier_xen);
267 
268             /*
269              * Xen supports additional interrupt routes from the PCI devices to
270              * the IOAPIC: the four pins of each PCI device on the bus are also
271              * connected to the IOAPIC directly.
272              * These additional routes can be discovered through ACPI.
273              */
274             pci_bus_irqs(pcms->pcibus, xen_intx_set_irq, pci_dev,
275                          XEN_IOAPIC_NUM_PIRQS);
276         }
277 
278         isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(pci_dev), "isa.0"));
279         x86ms->rtc = ISA_DEVICE(object_resolve_path_component(OBJECT(pci_dev),
280                                                               "rtc"));
281         piix4_pm = object_resolve_path_component(OBJECT(pci_dev), "pm");
282         dev = DEVICE(object_resolve_path_component(OBJECT(pci_dev), "ide"));
283         pci_ide_create_devs(PCI_DEVICE(dev));
284         pcms->idebus[0] = qdev_get_child_bus(dev, "ide.0");
285         pcms->idebus[1] = qdev_get_child_bus(dev, "ide.1");
286     } else {
287         isa_bus = isa_bus_new(NULL, system_memory, system_io,
288                               &error_abort);
289         isa_bus_register_input_irqs(isa_bus, x86ms->gsi);
290 
291         x86ms->rtc = isa_new(TYPE_MC146818_RTC);
292         qdev_prop_set_int32(DEVICE(x86ms->rtc), "base_year", 2000);
293         isa_realize_and_unref(x86ms->rtc, isa_bus, &error_fatal);
294 
295         i8257_dma_init(OBJECT(machine), isa_bus, 0);
296         pcms->hpet_enabled = false;
297     }
298 
299     if (x86ms->pic == ON_OFF_AUTO_ON || x86ms->pic == ON_OFF_AUTO_AUTO) {
300         pc_i8259_create(isa_bus, gsi_state->i8259_irq);
301     }
302 
303     if (phb) {
304         ioapic_init_gsi(gsi_state, phb);
305     }
306 
307     if (tcg_enabled()) {
308         x86_register_ferr_irq(x86ms->gsi[13]);
309     }
310 
311     pc_vga_init(isa_bus, pcmc->pci_enabled ? pcms->pcibus : NULL);
312 
313     assert(pcms->vmport != ON_OFF_AUTO__MAX);
314     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
315         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
316     }
317 
318     /* init basic PC hardware */
319     pc_basic_device_init(pcms, isa_bus, x86ms->gsi, x86ms->rtc,
320                          !MACHINE_CLASS(pcmc)->no_floppy, 0x4);
321 
322     pc_nic_init(pcmc, isa_bus, pcms->pcibus);
323 
324 #ifdef CONFIG_IDE_ISA
325     if (!pcmc->pci_enabled) {
326         DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
327         int i;
328 
329         ide_drive_get(hd, ARRAY_SIZE(hd));
330         for (i = 0; i < MAX_IDE_BUS; i++) {
331             ISADevice *dev;
332             char busname[] = "ide.0";
333             dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],
334                                ide_irq[i],
335                                hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
336             /*
337              * The ide bus name is ide.0 for the first bus and ide.1 for the
338              * second one.
339              */
340             busname[4] = '0' + i;
341             pcms->idebus[i] = qdev_get_child_bus(DEVICE(dev), busname);
342         }
343     }
344 #endif
345 
346     if (piix4_pm) {
347         smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);
348 
349         qdev_connect_gpio_out_named(DEVICE(piix4_pm), "smi-irq", 0, smi_irq);
350         pcms->smbus = I2C_BUS(qdev_get_child_bus(DEVICE(piix4_pm), "i2c"));
351         /* TODO: Populate SPD eeprom data.  */
352         smbus_eeprom_init(pcms->smbus, 8, NULL, 0);
353 
354         object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
355                                  TYPE_HOTPLUG_HANDLER,
356                                  (Object **)&x86ms->acpi_dev,
357                                  object_property_allow_set_link,
358                                  OBJ_PROP_LINK_STRONG);
359         object_property_set_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
360                                  piix4_pm, &error_abort);
361     }
362 
363     if (machine->nvdimms_state->is_enabled) {
364         nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
365                                x86_nvdimm_acpi_dsmio,
366                                x86ms->fw_cfg, OBJECT(pcms));
367     }
368 }
369 
370 typedef enum PCSouthBridgeOption {
371     PC_SOUTH_BRIDGE_OPTION_PIIX3,
372     PC_SOUTH_BRIDGE_OPTION_PIIX4,
373     PC_SOUTH_BRIDGE_OPTION_MAX,
374 } PCSouthBridgeOption;
375 
376 static const QEnumLookup PCSouthBridgeOption_lookup = {
377     .array = (const char *const[]) {
378         [PC_SOUTH_BRIDGE_OPTION_PIIX3] = TYPE_PIIX3_DEVICE,
379         [PC_SOUTH_BRIDGE_OPTION_PIIX4] = TYPE_PIIX4_PCI_DEVICE,
380     },
381     .size = PC_SOUTH_BRIDGE_OPTION_MAX
382 };
383 
384 static int pc_get_south_bridge(Object *obj, Error **errp)
385 {
386     PCMachineState *pcms = PC_MACHINE(obj);
387     int i;
388 
389     for (i = 0; i < PCSouthBridgeOption_lookup.size; i++) {
390         if (g_strcmp0(PCSouthBridgeOption_lookup.array[i],
391                       pcms->south_bridge) == 0) {
392             return i;
393         }
394     }
395 
396     error_setg(errp, "Invalid south bridge value set");
397     return 0;
398 }
399 
400 static void pc_set_south_bridge(Object *obj, int value, Error **errp)
401 {
402     PCMachineState *pcms = PC_MACHINE(obj);
403 
404     if (value < 0) {
405         error_setg(errp, "Value can't be negative");
406         return;
407     }
408 
409     if (value >= PCSouthBridgeOption_lookup.size) {
410         error_setg(errp, "Value too big");
411         return;
412     }
413 
414     pcms->south_bridge = PCSouthBridgeOption_lookup.array[value];
415 }
416 
417 #ifdef CONFIG_ISAPC
418 static void pc_init_isa(MachineState *machine)
419 {
420     pc_init1(machine, NULL);
421 }
422 #endif
423 
424 #ifdef CONFIG_XEN
425 static void pc_xen_hvm_init_pci(MachineState *machine)
426 {
427     const char *pci_type = xen_igd_gfx_pt_enabled() ?
428                 TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
429 
430     pc_init1(machine, pci_type);
431 }
432 
433 static void pc_xen_hvm_init(MachineState *machine)
434 {
435     PCMachineState *pcms = PC_MACHINE(machine);
436 
437     if (!xen_enabled()) {
438         error_report("xenfv machine requires the xen accelerator");
439         exit(1);
440     }
441 
442     pc_xen_hvm_init_pci(machine);
443     xen_igd_reserve_slot(pcms->pcibus);
444     pci_create_simple(pcms->pcibus, -1, "xen-platform");
445 }
446 #endif
447 
448 #define DEFINE_I440FX_MACHINE(suffix, name, optionfn) \
449     static void pc_init_##suffix(MachineState *machine) \
450     { \
451         pc_init1(machine, TYPE_I440FX_PCI_DEVICE); \
452     } \
453     DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
454 
455 static void pc_i440fx_machine_options(MachineClass *m)
456 {
457     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
458     ObjectClass *oc = OBJECT_CLASS(m);
459     pcmc->default_south_bridge = TYPE_PIIX3_DEVICE;
460     pcmc->pci_root_uid = 0;
461     pcmc->default_cpu_version = 1;
462 
463     m->family = "pc_piix";
464     m->desc = "Standard PC (i440FX + PIIX, 1996)";
465     m->default_machine_opts = "firmware=bios-256k.bin";
466     m->default_display = "std";
467     m->default_nic = "e1000";
468     m->no_floppy = !module_object_class_by_name(TYPE_ISA_FDC);
469     m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
470     machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
471     machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
472 
473     object_class_property_add_enum(oc, "x-south-bridge", "PCSouthBridgeOption",
474                                    &PCSouthBridgeOption_lookup,
475                                    pc_get_south_bridge,
476                                    pc_set_south_bridge);
477     object_class_property_set_description(oc, "x-south-bridge",
478                                      "Use a different south bridge than PIIX3");
479 }
480 
481 static void pc_i440fx_9_1_machine_options(MachineClass *m)
482 {
483     pc_i440fx_machine_options(m);
484     m->alias = "pc";
485     m->is_default = true;
486 }
487 
488 DEFINE_I440FX_MACHINE(v9_1, "pc-i440fx-9.1",
489                       pc_i440fx_9_1_machine_options);
490 
491 static void pc_i440fx_9_0_machine_options(MachineClass *m)
492 {
493     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
494 
495     pc_i440fx_9_1_machine_options(m);
496     m->alias = NULL;
497     m->is_default = false;
498 
499     compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);
500     compat_props_add(m->compat_props, pc_compat_9_0, pc_compat_9_0_len);
501     pcmc->isa_bios_alias = false;
502 }
503 
504 DEFINE_I440FX_MACHINE(v9_0, "pc-i440fx-9.0",
505                       pc_i440fx_9_0_machine_options);
506 
507 static void pc_i440fx_8_2_machine_options(MachineClass *m)
508 {
509     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
510 
511     pc_i440fx_9_0_machine_options(m);
512 
513     compat_props_add(m->compat_props, hw_compat_8_2, hw_compat_8_2_len);
514     compat_props_add(m->compat_props, pc_compat_8_2, pc_compat_8_2_len);
515     /* For pc-i44fx-8.2 and 8.1, use SMBIOS 3.X by default */
516     pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_64;
517 }
518 
519 DEFINE_I440FX_MACHINE(v8_2, "pc-i440fx-8.2",
520                       pc_i440fx_8_2_machine_options);
521 
522 static void pc_i440fx_8_1_machine_options(MachineClass *m)
523 {
524     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
525 
526     pc_i440fx_8_2_machine_options(m);
527     pcmc->broken_32bit_mem_addr_check = true;
528 
529     compat_props_add(m->compat_props, hw_compat_8_1, hw_compat_8_1_len);
530     compat_props_add(m->compat_props, pc_compat_8_1, pc_compat_8_1_len);
531 }
532 
533 DEFINE_I440FX_MACHINE(v8_1, "pc-i440fx-8.1",
534                       pc_i440fx_8_1_machine_options);
535 
536 static void pc_i440fx_8_0_machine_options(MachineClass *m)
537 {
538     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
539 
540     pc_i440fx_8_1_machine_options(m);
541     compat_props_add(m->compat_props, hw_compat_8_0, hw_compat_8_0_len);
542     compat_props_add(m->compat_props, pc_compat_8_0, pc_compat_8_0_len);
543 
544     /* For pc-i44fx-8.0 and older, use SMBIOS 2.8 by default */
545     pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_32;
546 }
547 
548 DEFINE_I440FX_MACHINE(v8_0, "pc-i440fx-8.0",
549                       pc_i440fx_8_0_machine_options);
550 
551 static void pc_i440fx_7_2_machine_options(MachineClass *m)
552 {
553     pc_i440fx_8_0_machine_options(m);
554     compat_props_add(m->compat_props, hw_compat_7_2, hw_compat_7_2_len);
555     compat_props_add(m->compat_props, pc_compat_7_2, pc_compat_7_2_len);
556 }
557 
558 DEFINE_I440FX_MACHINE(v7_2, "pc-i440fx-7.2",
559                       pc_i440fx_7_2_machine_options);
560 
561 static void pc_i440fx_7_1_machine_options(MachineClass *m)
562 {
563     pc_i440fx_7_2_machine_options(m);
564     compat_props_add(m->compat_props, hw_compat_7_1, hw_compat_7_1_len);
565     compat_props_add(m->compat_props, pc_compat_7_1, pc_compat_7_1_len);
566 }
567 
568 DEFINE_I440FX_MACHINE(v7_1, "pc-i440fx-7.1",
569                       pc_i440fx_7_1_machine_options);
570 
571 static void pc_i440fx_7_0_machine_options(MachineClass *m)
572 {
573     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
574     pc_i440fx_7_1_machine_options(m);
575     pcmc->enforce_amd_1tb_hole = false;
576     compat_props_add(m->compat_props, hw_compat_7_0, hw_compat_7_0_len);
577     compat_props_add(m->compat_props, pc_compat_7_0, pc_compat_7_0_len);
578 }
579 
580 DEFINE_I440FX_MACHINE(v7_0, "pc-i440fx-7.0",
581                       pc_i440fx_7_0_machine_options);
582 
583 static void pc_i440fx_6_2_machine_options(MachineClass *m)
584 {
585     pc_i440fx_7_0_machine_options(m);
586     compat_props_add(m->compat_props, hw_compat_6_2, hw_compat_6_2_len);
587     compat_props_add(m->compat_props, pc_compat_6_2, pc_compat_6_2_len);
588 }
589 
590 DEFINE_I440FX_MACHINE(v6_2, "pc-i440fx-6.2",
591                       pc_i440fx_6_2_machine_options);
592 
593 static void pc_i440fx_6_1_machine_options(MachineClass *m)
594 {
595     pc_i440fx_6_2_machine_options(m);
596     compat_props_add(m->compat_props, hw_compat_6_1, hw_compat_6_1_len);
597     compat_props_add(m->compat_props, pc_compat_6_1, pc_compat_6_1_len);
598     m->smp_props.prefer_sockets = true;
599 }
600 
601 DEFINE_I440FX_MACHINE(v6_1, "pc-i440fx-6.1",
602                       pc_i440fx_6_1_machine_options);
603 
604 static void pc_i440fx_6_0_machine_options(MachineClass *m)
605 {
606     pc_i440fx_6_1_machine_options(m);
607     compat_props_add(m->compat_props, hw_compat_6_0, hw_compat_6_0_len);
608     compat_props_add(m->compat_props, pc_compat_6_0, pc_compat_6_0_len);
609 }
610 
611 DEFINE_I440FX_MACHINE(v6_0, "pc-i440fx-6.0",
612                       pc_i440fx_6_0_machine_options);
613 
614 static void pc_i440fx_5_2_machine_options(MachineClass *m)
615 {
616     pc_i440fx_6_0_machine_options(m);
617     compat_props_add(m->compat_props, hw_compat_5_2, hw_compat_5_2_len);
618     compat_props_add(m->compat_props, pc_compat_5_2, pc_compat_5_2_len);
619 }
620 
621 DEFINE_I440FX_MACHINE(v5_2, "pc-i440fx-5.2",
622                       pc_i440fx_5_2_machine_options);
623 
624 static void pc_i440fx_5_1_machine_options(MachineClass *m)
625 {
626     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
627 
628     pc_i440fx_5_2_machine_options(m);
629     compat_props_add(m->compat_props, hw_compat_5_1, hw_compat_5_1_len);
630     compat_props_add(m->compat_props, pc_compat_5_1, pc_compat_5_1_len);
631     pcmc->kvmclock_create_always = false;
632     pcmc->pci_root_uid = 1;
633 }
634 
635 DEFINE_I440FX_MACHINE(v5_1, "pc-i440fx-5.1",
636                       pc_i440fx_5_1_machine_options);
637 
638 static void pc_i440fx_5_0_machine_options(MachineClass *m)
639 {
640     pc_i440fx_5_1_machine_options(m);
641     m->numa_mem_supported = true;
642     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
643     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
644     m->auto_enable_numa_with_memdev = false;
645 }
646 
647 DEFINE_I440FX_MACHINE(v5_0, "pc-i440fx-5.0",
648                       pc_i440fx_5_0_machine_options);
649 
650 static void pc_i440fx_4_2_machine_options(MachineClass *m)
651 {
652     pc_i440fx_5_0_machine_options(m);
653     compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
654     compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
655 }
656 
657 DEFINE_I440FX_MACHINE(v4_2, "pc-i440fx-4.2",
658                       pc_i440fx_4_2_machine_options);
659 
660 static void pc_i440fx_4_1_machine_options(MachineClass *m)
661 {
662     pc_i440fx_4_2_machine_options(m);
663     compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
664     compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
665 }
666 
667 DEFINE_I440FX_MACHINE(v4_1, "pc-i440fx-4.1",
668                       pc_i440fx_4_1_machine_options);
669 
670 static void pc_i440fx_4_0_machine_options(MachineClass *m)
671 {
672     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
673     pc_i440fx_4_1_machine_options(m);
674     pcmc->default_cpu_version = CPU_VERSION_LEGACY;
675     compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
676     compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
677 }
678 
679 DEFINE_I440FX_MACHINE(v4_0, "pc-i440fx-4.0",
680                       pc_i440fx_4_0_machine_options);
681 
682 static void pc_i440fx_3_1_machine_options(MachineClass *m)
683 {
684     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
685 
686     pc_i440fx_4_0_machine_options(m);
687     m->smbus_no_migration_support = true;
688     pcmc->pvh_enabled = false;
689     compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
690     compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
691 }
692 
693 DEFINE_I440FX_MACHINE(v3_1, "pc-i440fx-3.1",
694                       pc_i440fx_3_1_machine_options);
695 
696 static void pc_i440fx_3_0_machine_options(MachineClass *m)
697 {
698     pc_i440fx_3_1_machine_options(m);
699     compat_props_add(m->compat_props, hw_compat_3_0, hw_compat_3_0_len);
700     compat_props_add(m->compat_props, pc_compat_3_0, pc_compat_3_0_len);
701 }
702 
703 DEFINE_I440FX_MACHINE(v3_0, "pc-i440fx-3.0",
704                       pc_i440fx_3_0_machine_options);
705 
706 static void pc_i440fx_2_12_machine_options(MachineClass *m)
707 {
708     pc_i440fx_3_0_machine_options(m);
709     m->deprecation_reason = "old and unattended - use a newer version instead";
710     compat_props_add(m->compat_props, hw_compat_2_12, hw_compat_2_12_len);
711     compat_props_add(m->compat_props, pc_compat_2_12, pc_compat_2_12_len);
712 }
713 
714 DEFINE_I440FX_MACHINE(v2_12, "pc-i440fx-2.12",
715                       pc_i440fx_2_12_machine_options);
716 
717 static void pc_i440fx_2_11_machine_options(MachineClass *m)
718 {
719     pc_i440fx_2_12_machine_options(m);
720     compat_props_add(m->compat_props, hw_compat_2_11, hw_compat_2_11_len);
721     compat_props_add(m->compat_props, pc_compat_2_11, pc_compat_2_11_len);
722 }
723 
724 DEFINE_I440FX_MACHINE(v2_11, "pc-i440fx-2.11",
725                       pc_i440fx_2_11_machine_options);
726 
727 static void pc_i440fx_2_10_machine_options(MachineClass *m)
728 {
729     pc_i440fx_2_11_machine_options(m);
730     compat_props_add(m->compat_props, hw_compat_2_10, hw_compat_2_10_len);
731     compat_props_add(m->compat_props, pc_compat_2_10, pc_compat_2_10_len);
732     m->auto_enable_numa_with_memhp = false;
733 }
734 
735 DEFINE_I440FX_MACHINE(v2_10, "pc-i440fx-2.10",
736                       pc_i440fx_2_10_machine_options);
737 
738 static void pc_i440fx_2_9_machine_options(MachineClass *m)
739 {
740     pc_i440fx_2_10_machine_options(m);
741     compat_props_add(m->compat_props, hw_compat_2_9, hw_compat_2_9_len);
742     compat_props_add(m->compat_props, pc_compat_2_9, pc_compat_2_9_len);
743 }
744 
745 DEFINE_I440FX_MACHINE(v2_9, "pc-i440fx-2.9",
746                       pc_i440fx_2_9_machine_options);
747 
748 static void pc_i440fx_2_8_machine_options(MachineClass *m)
749 {
750     pc_i440fx_2_9_machine_options(m);
751     compat_props_add(m->compat_props, hw_compat_2_8, hw_compat_2_8_len);
752     compat_props_add(m->compat_props, pc_compat_2_8, pc_compat_2_8_len);
753 }
754 
755 DEFINE_I440FX_MACHINE(v2_8, "pc-i440fx-2.8",
756                       pc_i440fx_2_8_machine_options);
757 
758 static void pc_i440fx_2_7_machine_options(MachineClass *m)
759 {
760     pc_i440fx_2_8_machine_options(m);
761     compat_props_add(m->compat_props, hw_compat_2_7, hw_compat_2_7_len);
762     compat_props_add(m->compat_props, pc_compat_2_7, pc_compat_2_7_len);
763 }
764 
765 DEFINE_I440FX_MACHINE(v2_7, "pc-i440fx-2.7",
766                       pc_i440fx_2_7_machine_options);
767 
768 static void pc_i440fx_2_6_machine_options(MachineClass *m)
769 {
770     X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
771     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
772 
773     pc_i440fx_2_7_machine_options(m);
774     pcmc->legacy_cpu_hotplug = true;
775     x86mc->fwcfg_dma_enabled = false;
776     compat_props_add(m->compat_props, hw_compat_2_6, hw_compat_2_6_len);
777     compat_props_add(m->compat_props, pc_compat_2_6, pc_compat_2_6_len);
778 }
779 
780 DEFINE_I440FX_MACHINE(v2_6, "pc-i440fx-2.6",
781                       pc_i440fx_2_6_machine_options);
782 
783 static void pc_i440fx_2_5_machine_options(MachineClass *m)
784 {
785     X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
786 
787     pc_i440fx_2_6_machine_options(m);
788     x86mc->save_tsc_khz = false;
789     m->legacy_fw_cfg_order = 1;
790     compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
791     compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
792 }
793 
794 DEFINE_I440FX_MACHINE(v2_5, "pc-i440fx-2.5",
795                       pc_i440fx_2_5_machine_options);
796 
797 static void pc_i440fx_2_4_machine_options(MachineClass *m)
798 {
799     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
800 
801     pc_i440fx_2_5_machine_options(m);
802     m->hw_version = "2.4.0";
803     pcmc->broken_reserved_end = true;
804     compat_props_add(m->compat_props, hw_compat_2_4, hw_compat_2_4_len);
805     compat_props_add(m->compat_props, pc_compat_2_4, pc_compat_2_4_len);
806 }
807 
808 DEFINE_I440FX_MACHINE(v2_4, "pc-i440fx-2.4",
809                       pc_i440fx_2_4_machine_options)
810 
811 #ifdef CONFIG_ISAPC
812 static void isapc_machine_options(MachineClass *m)
813 {
814     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
815     m->desc = "ISA-only PC";
816     m->max_cpus = 1;
817     m->option_rom_has_mr = true;
818     m->rom_file_has_mr = false;
819     pcmc->pci_enabled = false;
820     pcmc->has_acpi_build = false;
821     pcmc->smbios_defaults = false;
822     pcmc->gigabyte_align = false;
823     pcmc->smbios_legacy_mode = true;
824     pcmc->has_reserved_memory = false;
825     m->default_nic = "ne2k_isa";
826     m->default_cpu_type = X86_CPU_TYPE_NAME("486");
827     m->no_floppy = !module_object_class_by_name(TYPE_ISA_FDC);
828     m->no_parallel = !module_object_class_by_name(TYPE_ISA_PARALLEL);
829 }
830 
831 DEFINE_PC_MACHINE(isapc, "isapc", pc_init_isa,
832                   isapc_machine_options);
833 #endif
834 
835 #ifdef CONFIG_XEN
836 static void xenfv_4_2_machine_options(MachineClass *m)
837 {
838     pc_i440fx_4_2_machine_options(m);
839     m->desc = "Xen Fully-virtualized PC";
840     m->max_cpus = HVM_MAX_VCPUS;
841     m->default_machine_opts = "accel=xen,suppress-vmdesc=on";
842 }
843 
844 DEFINE_PC_MACHINE(xenfv_4_2, "xenfv-4.2", pc_xen_hvm_init,
845                   xenfv_4_2_machine_options);
846 
847 static void xenfv_3_1_machine_options(MachineClass *m)
848 {
849     pc_i440fx_3_1_machine_options(m);
850     m->desc = "Xen Fully-virtualized PC";
851     m->alias = "xenfv";
852     m->max_cpus = HVM_MAX_VCPUS;
853     m->default_machine_opts = "accel=xen,suppress-vmdesc=on";
854 }
855 
856 DEFINE_PC_MACHINE(xenfv, "xenfv-3.1", pc_xen_hvm_init,
857                   xenfv_3_1_machine_options);
858 #endif
859