2 * QEMU PC System Emulator
4 * Copyright (c) 2003-2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "qemu/osdep.h"
26 #include "qemu/units.h"
27 #include "hw/i386/x86.h"
28 #include "hw/i386/pc.h"
29 #include "hw/char/serial.h"
30 #include "hw/char/parallel.h"
31 #include "hw/i386/apic.h"
32 #include "hw/i386/topology.h"
33 #include "hw/i386/fw_cfg.h"
34 #include "hw/i386/vmport.h"
35 #include "sysemu/cpus.h"
36 #include "hw/block/fdc.h"
38 #include "hw/pci/pci.h"
39 #include "hw/pci/pci_bus.h"
40 #include "hw/pci-bridge/pci_expander_bridge.h"
41 #include "hw/nvram/fw_cfg.h"
42 #include "hw/timer/hpet.h"
43 #include "hw/firmware/smbios.h"
44 #include "hw/loader.h"
46 #include "migration/vmstate.h"
47 #include "multiboot.h"
48 #include "hw/rtc/mc146818rtc.h"
49 #include "hw/intc/i8259.h"
50 #include "hw/dma/i8257.h"
51 #include "hw/timer/i8254.h"
52 #include "hw/input/i8042.h"
54 #include "hw/audio/pcspk.h"
55 #include "hw/pci/msi.h"
56 #include "hw/sysbus.h"
57 #include "sysemu/sysemu.h"
58 #include "sysemu/tcg.h"
59 #include "sysemu/numa.h"
60 #include "sysemu/kvm.h"
61 #include "sysemu/xen.h"
62 #include "sysemu/reset.h"
63 #include "sysemu/runstate.h"
64 #include "kvm/kvm_i386.h"
65 #include "hw/xen/xen.h"
66 #include "hw/xen/start_info.h"
67 #include "ui/qemu-spice.h"
68 #include "exec/memory.h"
69 #include "qemu/bitmap.h"
70 #include "qemu/config-file.h"
71 #include "qemu/error-report.h"
72 #include "qemu/option.h"
73 #include "qemu/cutils.h"
74 #include "hw/acpi/acpi.h"
75 #include "hw/acpi/cpu_hotplug.h"
76 #include "acpi-build.h"
77 #include "hw/mem/pc-dimm.h"
78 #include "hw/mem/nvdimm.h"
79 #include "hw/cxl/cxl.h"
80 #include "hw/cxl/cxl_host.h"
81 #include "qapi/error.h"
82 #include "qapi/qapi-visit-common.h"
83 #include "qapi/qapi-visit-machine.h"
84 #include "qapi/visitor.h"
85 #include "hw/core/cpu.h"
87 #include "hw/i386/intel_iommu.h"
88 #include "hw/net/ne2000-isa.h"
89 #include "standard-headers/asm-x86/bootparam.h"
90 #include "hw/virtio/virtio-iommu.h"
91 #include "hw/virtio/virtio-pmem-pci.h"
92 #include "hw/virtio/virtio-mem-pci.h"
93 #include "hw/mem/memory-device.h"
94 #include "sysemu/replay.h"
95 #include "qapi/qmp/qerror.h"
96 #include "e820_memory_layout.h"
99 #include CONFIG_DEVICES
102 * Helper for setting model-id for CPU models that changed model-id
103 * depending on QEMU versions up to QEMU 2.4.
105 #define PC_CPU_MODEL_IDS(v) \
106 { "qemu32-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
107 { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
108 { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },
110 GlobalProperty pc_compat_7_1
[] = {};
111 const size_t pc_compat_7_1_len
= G_N_ELEMENTS(pc_compat_7_1
);
113 GlobalProperty pc_compat_7_0
[] = {};
114 const size_t pc_compat_7_0_len
= G_N_ELEMENTS(pc_compat_7_0
);
116 GlobalProperty pc_compat_6_2
[] = {
117 { "virtio-mem", "unplugged-inaccessible", "off" },
119 const size_t pc_compat_6_2_len
= G_N_ELEMENTS(pc_compat_6_2
);
121 GlobalProperty pc_compat_6_1
[] = {
122 { TYPE_X86_CPU
, "hv-version-id-build", "0x1bbc" },
123 { TYPE_X86_CPU
, "hv-version-id-major", "0x0006" },
124 { TYPE_X86_CPU
, "hv-version-id-minor", "0x0001" },
125 { "ICH9-LPC", "x-keep-pci-slot-hpc", "false" },
127 const size_t pc_compat_6_1_len
= G_N_ELEMENTS(pc_compat_6_1
);
129 GlobalProperty pc_compat_6_0
[] = {
130 { "qemu64" "-" TYPE_X86_CPU
, "family", "6" },
131 { "qemu64" "-" TYPE_X86_CPU
, "model", "6" },
132 { "qemu64" "-" TYPE_X86_CPU
, "stepping", "3" },
133 { TYPE_X86_CPU
, "x-vendor-cpuid-only", "off" },
134 { "ICH9-LPC", ACPI_PM_PROP_ACPI_PCIHP_BRIDGE
, "off" },
135 { "ICH9-LPC", "x-keep-pci-slot-hpc", "true" },
137 const size_t pc_compat_6_0_len
= G_N_ELEMENTS(pc_compat_6_0
);
139 GlobalProperty pc_compat_5_2
[] = {
140 { "ICH9-LPC", "x-smi-cpu-hotunplug", "off" },
142 const size_t pc_compat_5_2_len
= G_N_ELEMENTS(pc_compat_5_2
);
144 GlobalProperty pc_compat_5_1
[] = {
145 { "ICH9-LPC", "x-smi-cpu-hotplug", "off" },
146 { TYPE_X86_CPU
, "kvm-msi-ext-dest-id", "off" },
148 const size_t pc_compat_5_1_len
= G_N_ELEMENTS(pc_compat_5_1
);
150 GlobalProperty pc_compat_5_0
[] = {
152 const size_t pc_compat_5_0_len
= G_N_ELEMENTS(pc_compat_5_0
);
154 GlobalProperty pc_compat_4_2
[] = {
155 { "mch", "smbase-smram", "off" },
157 const size_t pc_compat_4_2_len
= G_N_ELEMENTS(pc_compat_4_2
);
159 GlobalProperty pc_compat_4_1
[] = {};
160 const size_t pc_compat_4_1_len
= G_N_ELEMENTS(pc_compat_4_1
);
162 GlobalProperty pc_compat_4_0
[] = {};
163 const size_t pc_compat_4_0_len
= G_N_ELEMENTS(pc_compat_4_0
);
165 GlobalProperty pc_compat_3_1
[] = {
166 { "intel-iommu", "dma-drain", "off" },
167 { "Opteron_G3" "-" TYPE_X86_CPU
, "rdtscp", "off" },
168 { "Opteron_G4" "-" TYPE_X86_CPU
, "rdtscp", "off" },
169 { "Opteron_G4" "-" TYPE_X86_CPU
, "npt", "off" },
170 { "Opteron_G4" "-" TYPE_X86_CPU
, "nrip-save", "off" },
171 { "Opteron_G5" "-" TYPE_X86_CPU
, "rdtscp", "off" },
172 { "Opteron_G5" "-" TYPE_X86_CPU
, "npt", "off" },
173 { "Opteron_G5" "-" TYPE_X86_CPU
, "nrip-save", "off" },
174 { "EPYC" "-" TYPE_X86_CPU
, "npt", "off" },
175 { "EPYC" "-" TYPE_X86_CPU
, "nrip-save", "off" },
176 { "EPYC-IBPB" "-" TYPE_X86_CPU
, "npt", "off" },
177 { "EPYC-IBPB" "-" TYPE_X86_CPU
, "nrip-save", "off" },
178 { "Skylake-Client" "-" TYPE_X86_CPU
, "mpx", "on" },
179 { "Skylake-Client-IBRS" "-" TYPE_X86_CPU
, "mpx", "on" },
180 { "Skylake-Server" "-" TYPE_X86_CPU
, "mpx", "on" },
181 { "Skylake-Server-IBRS" "-" TYPE_X86_CPU
, "mpx", "on" },
182 { "Cascadelake-Server" "-" TYPE_X86_CPU
, "mpx", "on" },
183 { "Icelake-Client" "-" TYPE_X86_CPU
, "mpx", "on" },
184 { "Icelake-Server" "-" TYPE_X86_CPU
, "mpx", "on" },
185 { "Cascadelake-Server" "-" TYPE_X86_CPU
, "stepping", "5" },
186 { TYPE_X86_CPU
, "x-intel-pt-auto-level", "off" },
188 const size_t pc_compat_3_1_len
= G_N_ELEMENTS(pc_compat_3_1
);
190 GlobalProperty pc_compat_3_0
[] = {
191 { TYPE_X86_CPU
, "x-hv-synic-kvm-only", "on" },
192 { "Skylake-Server" "-" TYPE_X86_CPU
, "pku", "off" },
193 { "Skylake-Server-IBRS" "-" TYPE_X86_CPU
, "pku", "off" },
195 const size_t pc_compat_3_0_len
= G_N_ELEMENTS(pc_compat_3_0
);
197 GlobalProperty pc_compat_2_12
[] = {
198 { TYPE_X86_CPU
, "legacy-cache", "on" },
199 { TYPE_X86_CPU
, "topoext", "off" },
200 { "EPYC-" TYPE_X86_CPU
, "xlevel", "0x8000000a" },
201 { "EPYC-IBPB-" TYPE_X86_CPU
, "xlevel", "0x8000000a" },
203 const size_t pc_compat_2_12_len
= G_N_ELEMENTS(pc_compat_2_12
);
205 GlobalProperty pc_compat_2_11
[] = {
206 { TYPE_X86_CPU
, "x-migrate-smi-count", "off" },
207 { "Skylake-Server" "-" TYPE_X86_CPU
, "clflushopt", "off" },
209 const size_t pc_compat_2_11_len
= G_N_ELEMENTS(pc_compat_2_11
);
211 GlobalProperty pc_compat_2_10
[] = {
212 { TYPE_X86_CPU
, "x-hv-max-vps", "0x40" },
213 { "i440FX-pcihost", "x-pci-hole64-fix", "off" },
214 { "q35-pcihost", "x-pci-hole64-fix", "off" },
216 const size_t pc_compat_2_10_len
= G_N_ELEMENTS(pc_compat_2_10
);
218 GlobalProperty pc_compat_2_9
[] = {
219 { "mch", "extended-tseg-mbytes", "0" },
221 const size_t pc_compat_2_9_len
= G_N_ELEMENTS(pc_compat_2_9
);
223 GlobalProperty pc_compat_2_8
[] = {
224 { TYPE_X86_CPU
, "tcg-cpuid", "off" },
225 { "kvmclock", "x-mach-use-reliable-get-clock", "off" },
226 { "ICH9-LPC", "x-smi-broadcast", "off" },
227 { TYPE_X86_CPU
, "vmware-cpuid-freq", "off" },
228 { "Haswell-" TYPE_X86_CPU
, "stepping", "1" },
230 const size_t pc_compat_2_8_len
= G_N_ELEMENTS(pc_compat_2_8
);
232 GlobalProperty pc_compat_2_7
[] = {
233 { TYPE_X86_CPU
, "l3-cache", "off" },
234 { TYPE_X86_CPU
, "full-cpuid-auto-level", "off" },
235 { "Opteron_G3" "-" TYPE_X86_CPU
, "family", "15" },
236 { "Opteron_G3" "-" TYPE_X86_CPU
, "model", "6" },
237 { "Opteron_G3" "-" TYPE_X86_CPU
, "stepping", "1" },
238 { "isa-pcspk", "migrate", "off" },
240 const size_t pc_compat_2_7_len
= G_N_ELEMENTS(pc_compat_2_7
);
242 GlobalProperty pc_compat_2_6
[] = {
243 { TYPE_X86_CPU
, "cpuid-0xb", "off" },
244 { "vmxnet3", "romfile", "" },
245 { TYPE_X86_CPU
, "fill-mtrr-mask", "off" },
246 { "apic-common", "legacy-instance-id", "on", }
248 const size_t pc_compat_2_6_len
= G_N_ELEMENTS(pc_compat_2_6
);
250 GlobalProperty pc_compat_2_5
[] = {};
251 const size_t pc_compat_2_5_len
= G_N_ELEMENTS(pc_compat_2_5
);
253 GlobalProperty pc_compat_2_4
[] = {
254 PC_CPU_MODEL_IDS("2.4.0")
255 { "Haswell-" TYPE_X86_CPU
, "abm", "off" },
256 { "Haswell-noTSX-" TYPE_X86_CPU
, "abm", "off" },
257 { "Broadwell-" TYPE_X86_CPU
, "abm", "off" },
258 { "Broadwell-noTSX-" TYPE_X86_CPU
, "abm", "off" },
259 { "host" "-" TYPE_X86_CPU
, "host-cache-info", "on" },
260 { TYPE_X86_CPU
, "check", "off" },
261 { "qemu64" "-" TYPE_X86_CPU
, "sse4a", "on" },
262 { "qemu64" "-" TYPE_X86_CPU
, "abm", "on" },
263 { "qemu64" "-" TYPE_X86_CPU
, "popcnt", "on" },
264 { "qemu32" "-" TYPE_X86_CPU
, "popcnt", "on" },
265 { "Opteron_G2" "-" TYPE_X86_CPU
, "rdtscp", "on" },
266 { "Opteron_G3" "-" TYPE_X86_CPU
, "rdtscp", "on" },
267 { "Opteron_G4" "-" TYPE_X86_CPU
, "rdtscp", "on" },
268 { "Opteron_G5" "-" TYPE_X86_CPU
, "rdtscp", "on", }
270 const size_t pc_compat_2_4_len
= G_N_ELEMENTS(pc_compat_2_4
);
272 GlobalProperty pc_compat_2_3
[] = {
273 PC_CPU_MODEL_IDS("2.3.0")
274 { TYPE_X86_CPU
, "arat", "off" },
275 { "qemu64" "-" TYPE_X86_CPU
, "min-level", "4" },
276 { "kvm64" "-" TYPE_X86_CPU
, "min-level", "5" },
277 { "pentium3" "-" TYPE_X86_CPU
, "min-level", "2" },
278 { "n270" "-" TYPE_X86_CPU
, "min-level", "5" },
279 { "Conroe" "-" TYPE_X86_CPU
, "min-level", "4" },
280 { "Penryn" "-" TYPE_X86_CPU
, "min-level", "4" },
281 { "Nehalem" "-" TYPE_X86_CPU
, "min-level", "4" },
282 { "n270" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
283 { "Penryn" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
284 { "Conroe" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
285 { "Nehalem" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
286 { "Westmere" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
287 { "SandyBridge" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
288 { "IvyBridge" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
289 { "Haswell" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
290 { "Haswell-noTSX" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
291 { "Broadwell" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
292 { "Broadwell-noTSX" "-" TYPE_X86_CPU
, "min-xlevel", "0x8000000a" },
293 { TYPE_X86_CPU
, "kvm-no-smi-migration", "on" },
295 const size_t pc_compat_2_3_len
= G_N_ELEMENTS(pc_compat_2_3
);
297 GlobalProperty pc_compat_2_2
[] = {
298 PC_CPU_MODEL_IDS("2.2.0")
299 { "kvm64" "-" TYPE_X86_CPU
, "vme", "off" },
300 { "kvm32" "-" TYPE_X86_CPU
, "vme", "off" },
301 { "Conroe" "-" TYPE_X86_CPU
, "vme", "off" },
302 { "Penryn" "-" TYPE_X86_CPU
, "vme", "off" },
303 { "Nehalem" "-" TYPE_X86_CPU
, "vme", "off" },
304 { "Westmere" "-" TYPE_X86_CPU
, "vme", "off" },
305 { "SandyBridge" "-" TYPE_X86_CPU
, "vme", "off" },
306 { "Haswell" "-" TYPE_X86_CPU
, "vme", "off" },
307 { "Broadwell" "-" TYPE_X86_CPU
, "vme", "off" },
308 { "Opteron_G1" "-" TYPE_X86_CPU
, "vme", "off" },
309 { "Opteron_G2" "-" TYPE_X86_CPU
, "vme", "off" },
310 { "Opteron_G3" "-" TYPE_X86_CPU
, "vme", "off" },
311 { "Opteron_G4" "-" TYPE_X86_CPU
, "vme", "off" },
312 { "Opteron_G5" "-" TYPE_X86_CPU
, "vme", "off" },
313 { "Haswell" "-" TYPE_X86_CPU
, "f16c", "off" },
314 { "Haswell" "-" TYPE_X86_CPU
, "rdrand", "off" },
315 { "Broadwell" "-" TYPE_X86_CPU
, "f16c", "off" },
316 { "Broadwell" "-" TYPE_X86_CPU
, "rdrand", "off" },
318 const size_t pc_compat_2_2_len
= G_N_ELEMENTS(pc_compat_2_2
);
320 GlobalProperty pc_compat_2_1
[] = {
321 PC_CPU_MODEL_IDS("2.1.0")
322 { "coreduo" "-" TYPE_X86_CPU
, "vmx", "on" },
323 { "core2duo" "-" TYPE_X86_CPU
, "vmx", "on" },
325 const size_t pc_compat_2_1_len
= G_N_ELEMENTS(pc_compat_2_1
);
327 GlobalProperty pc_compat_2_0
[] = {
328 PC_CPU_MODEL_IDS("2.0.0")
329 { "virtio-scsi-pci", "any_layout", "off" },
330 { "PIIX4_PM", "memory-hotplug-support", "off" },
331 { "apic", "version", "0x11" },
332 { "nec-usb-xhci", "superspeed-ports-first", "off" },
333 { "nec-usb-xhci", "force-pcie-endcap", "on" },
334 { "pci-serial", "prog_if", "0" },
335 { "pci-serial-2x", "prog_if", "0" },
336 { "pci-serial-4x", "prog_if", "0" },
337 { "virtio-net-pci", "guest_announce", "off" },
338 { "ICH9-LPC", "memory-hotplug-support", "off" },
340 const size_t pc_compat_2_0_len
= G_N_ELEMENTS(pc_compat_2_0
);
342 GlobalProperty pc_compat_1_7
[] = {
343 PC_CPU_MODEL_IDS("1.7.0")
344 { TYPE_USB_DEVICE
, "msos-desc", "no" },
345 { "PIIX4_PM", ACPI_PM_PROP_ACPI_PCIHP_BRIDGE
, "off" },
346 { "hpet", HPET_INTCAP
, "4" },
348 const size_t pc_compat_1_7_len
= G_N_ELEMENTS(pc_compat_1_7
);
350 GlobalProperty pc_compat_1_6
[] = {
351 PC_CPU_MODEL_IDS("1.6.0")
352 { "e1000", "mitigation", "off" },
353 { "qemu64-" TYPE_X86_CPU
, "model", "2" },
354 { "qemu32-" TYPE_X86_CPU
, "model", "3" },
355 { "i440FX-pcihost", "short_root_bus", "1" },
356 { "q35-pcihost", "short_root_bus", "1" },
358 const size_t pc_compat_1_6_len
= G_N_ELEMENTS(pc_compat_1_6
);
360 GlobalProperty pc_compat_1_5
[] = {
361 PC_CPU_MODEL_IDS("1.5.0")
362 { "Conroe-" TYPE_X86_CPU
, "model", "2" },
363 { "Conroe-" TYPE_X86_CPU
, "min-level", "2" },
364 { "Penryn-" TYPE_X86_CPU
, "model", "2" },
365 { "Penryn-" TYPE_X86_CPU
, "min-level", "2" },
366 { "Nehalem-" TYPE_X86_CPU
, "model", "2" },
367 { "Nehalem-" TYPE_X86_CPU
, "min-level", "2" },
368 { "virtio-net-pci", "any_layout", "off" },
369 { TYPE_X86_CPU
, "pmu", "on" },
370 { "i440FX-pcihost", "short_root_bus", "0" },
371 { "q35-pcihost", "short_root_bus", "0" },
373 const size_t pc_compat_1_5_len
= G_N_ELEMENTS(pc_compat_1_5
);
375 GlobalProperty pc_compat_1_4
[] = {
376 PC_CPU_MODEL_IDS("1.4.0")
377 { "scsi-hd", "discard_granularity", "0" },
378 { "scsi-cd", "discard_granularity", "0" },
379 { "ide-hd", "discard_granularity", "0" },
380 { "ide-cd", "discard_granularity", "0" },
381 { "virtio-blk-pci", "discard_granularity", "0" },
382 /* DEV_NVECTORS_UNSPECIFIED as a uint32_t string: */
383 { "virtio-serial-pci", "vectors", "0xFFFFFFFF" },
384 { "virtio-net-pci", "ctrl_guest_offloads", "off" },
385 { "e1000", "romfile", "pxe-e1000.rom" },
386 { "ne2k_pci", "romfile", "pxe-ne2k_pci.rom" },
387 { "pcnet", "romfile", "pxe-pcnet.rom" },
388 { "rtl8139", "romfile", "pxe-rtl8139.rom" },
389 { "virtio-net-pci", "romfile", "pxe-virtio.rom" },
390 { "486-" TYPE_X86_CPU
, "model", "0" },
391 { "n270" "-" TYPE_X86_CPU
, "movbe", "off" },
392 { "Westmere" "-" TYPE_X86_CPU
, "pclmulqdq", "off" },
394 const size_t pc_compat_1_4_len
= G_N_ELEMENTS(pc_compat_1_4
);
396 GSIState
*pc_gsi_create(qemu_irq
**irqs
, bool pci_enabled
)
400 s
= g_new0(GSIState
, 1);
401 if (kvm_ioapic_in_kernel()) {
402 kvm_pc_setup_irq_routing(pci_enabled
);
404 *irqs
= qemu_allocate_irqs(gsi_handler
, s
, GSI_NUM_PINS
);
409 static void ioport80_write(void *opaque
, hwaddr addr
, uint64_t data
,
414 static uint64_t ioport80_read(void *opaque
, hwaddr addr
, unsigned size
)
416 return 0xffffffffffffffffULL
;
419 /* MSDOS compatibility mode FPU exception support */
420 static void ioportF0_write(void *opaque
, hwaddr addr
, uint64_t data
,
428 static uint64_t ioportF0_read(void *opaque
, hwaddr addr
, unsigned size
)
430 return 0xffffffffffffffffULL
;
433 /* PC cmos mappings */
435 #define REG_EQUIPMENT_BYTE 0x14
437 static void cmos_init_hd(ISADevice
*s
, int type_ofs
, int info_ofs
,
438 int16_t cylinders
, int8_t heads
, int8_t sectors
)
440 rtc_set_memory(s
, type_ofs
, 47);
441 rtc_set_memory(s
, info_ofs
, cylinders
);
442 rtc_set_memory(s
, info_ofs
+ 1, cylinders
>> 8);
443 rtc_set_memory(s
, info_ofs
+ 2, heads
);
444 rtc_set_memory(s
, info_ofs
+ 3, 0xff);
445 rtc_set_memory(s
, info_ofs
+ 4, 0xff);
446 rtc_set_memory(s
, info_ofs
+ 5, 0xc0 | ((heads
> 8) << 3));
447 rtc_set_memory(s
, info_ofs
+ 6, cylinders
);
448 rtc_set_memory(s
, info_ofs
+ 7, cylinders
>> 8);
449 rtc_set_memory(s
, info_ofs
+ 8, sectors
);
452 /* convert boot_device letter to something recognizable by the bios */
453 static int boot_device2nibble(char boot_device
)
455 switch(boot_device
) {
458 return 0x01; /* floppy boot */
460 return 0x02; /* hard drive boot */
462 return 0x03; /* CD-ROM boot */
464 return 0x04; /* Network boot */
469 static void set_boot_dev(ISADevice
*s
, const char *boot_device
, Error
**errp
)
471 #define PC_MAX_BOOT_DEVICES 3
472 int nbds
, bds
[3] = { 0, };
475 nbds
= strlen(boot_device
);
476 if (nbds
> PC_MAX_BOOT_DEVICES
) {
477 error_setg(errp
, "Too many boot devices for PC");
480 for (i
= 0; i
< nbds
; i
++) {
481 bds
[i
] = boot_device2nibble(boot_device
[i
]);
483 error_setg(errp
, "Invalid boot device for PC: '%c'",
488 rtc_set_memory(s
, 0x3d, (bds
[1] << 4) | bds
[0]);
489 rtc_set_memory(s
, 0x38, (bds
[2] << 4) | (fd_bootchk
? 0x0 : 0x1));
492 static void pc_boot_set(void *opaque
, const char *boot_device
, Error
**errp
)
494 set_boot_dev(opaque
, boot_device
, errp
);
497 static void pc_cmos_init_floppy(ISADevice
*rtc_state
, ISADevice
*floppy
)
500 FloppyDriveType fd_type
[2] = { FLOPPY_DRIVE_TYPE_NONE
,
501 FLOPPY_DRIVE_TYPE_NONE
};
505 for (i
= 0; i
< 2; i
++) {
506 fd_type
[i
] = isa_fdc_get_drive_type(floppy
, i
);
509 val
= (cmos_get_fd_drive_type(fd_type
[0]) << 4) |
510 cmos_get_fd_drive_type(fd_type
[1]);
511 rtc_set_memory(rtc_state
, 0x10, val
);
513 val
= rtc_get_memory(rtc_state
, REG_EQUIPMENT_BYTE
);
515 if (fd_type
[0] != FLOPPY_DRIVE_TYPE_NONE
) {
518 if (fd_type
[1] != FLOPPY_DRIVE_TYPE_NONE
) {
525 val
|= 0x01; /* 1 drive, ready for boot */
528 val
|= 0x41; /* 2 drives, ready for boot */
531 rtc_set_memory(rtc_state
, REG_EQUIPMENT_BYTE
, val
);
534 typedef struct pc_cmos_init_late_arg
{
535 ISADevice
*rtc_state
;
537 } pc_cmos_init_late_arg
;
539 typedef struct check_fdc_state
{
544 static int check_fdc(Object
*obj
, void *opaque
)
546 CheckFdcState
*state
= opaque
;
549 Error
*local_err
= NULL
;
551 fdc
= object_dynamic_cast(obj
, TYPE_ISA_FDC
);
556 iobase
= object_property_get_uint(obj
, "iobase", &local_err
);
557 if (local_err
|| iobase
!= 0x3f0) {
558 error_free(local_err
);
563 state
->multiple
= true;
565 state
->floppy
= ISA_DEVICE(obj
);
570 static const char * const fdc_container_path
[] = {
571 "/unattached", "/peripheral", "/peripheral-anon"
575 * Locate the FDC at IO address 0x3f0, in order to configure the CMOS registers
578 static ISADevice
*pc_find_fdc0(void)
582 CheckFdcState state
= { 0 };
584 for (i
= 0; i
< ARRAY_SIZE(fdc_container_path
); i
++) {
585 container
= container_get(qdev_get_machine(), fdc_container_path
[i
]);
586 object_child_foreach(container
, check_fdc
, &state
);
589 if (state
.multiple
) {
590 warn_report("multiple floppy disk controllers with "
591 "iobase=0x3f0 have been found");
592 error_printf("the one being picked for CMOS setup might not reflect "
599 static void pc_cmos_init_late(void *opaque
)
601 pc_cmos_init_late_arg
*arg
= opaque
;
602 ISADevice
*s
= arg
->rtc_state
;
604 int8_t heads
, sectors
;
609 if (arg
->idebus
[0] && ide_get_geometry(arg
->idebus
[0], 0,
610 &cylinders
, &heads
, §ors
) >= 0) {
611 cmos_init_hd(s
, 0x19, 0x1b, cylinders
, heads
, sectors
);
614 if (arg
->idebus
[0] && ide_get_geometry(arg
->idebus
[0], 1,
615 &cylinders
, &heads
, §ors
) >= 0) {
616 cmos_init_hd(s
, 0x1a, 0x24, cylinders
, heads
, sectors
);
619 rtc_set_memory(s
, 0x12, val
);
622 for (i
= 0; i
< 4; i
++) {
623 /* NOTE: ide_get_geometry() returns the physical
624 geometry. It is always such that: 1 <= sects <= 63, 1
625 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
626 geometry can be different if a translation is done. */
627 if (arg
->idebus
[i
/ 2] &&
628 ide_get_geometry(arg
->idebus
[i
/ 2], i
% 2,
629 &cylinders
, &heads
, §ors
) >= 0) {
630 trans
= ide_get_bios_chs_trans(arg
->idebus
[i
/ 2], i
% 2) - 1;
631 assert((trans
& ~3) == 0);
632 val
|= trans
<< (i
* 2);
635 rtc_set_memory(s
, 0x39, val
);
637 pc_cmos_init_floppy(s
, pc_find_fdc0());
639 qemu_unregister_reset(pc_cmos_init_late
, opaque
);
642 void pc_cmos_init(PCMachineState
*pcms
,
643 BusState
*idebus0
, BusState
*idebus1
,
647 static pc_cmos_init_late_arg arg
;
648 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
650 /* various important CMOS locations needed by PC/Bochs bios */
653 /* base memory (first MiB) */
654 val
= MIN(x86ms
->below_4g_mem_size
/ KiB
, 640);
655 rtc_set_memory(s
, 0x15, val
);
656 rtc_set_memory(s
, 0x16, val
>> 8);
657 /* extended memory (next 64MiB) */
658 if (x86ms
->below_4g_mem_size
> 1 * MiB
) {
659 val
= (x86ms
->below_4g_mem_size
- 1 * MiB
) / KiB
;
665 rtc_set_memory(s
, 0x17, val
);
666 rtc_set_memory(s
, 0x18, val
>> 8);
667 rtc_set_memory(s
, 0x30, val
);
668 rtc_set_memory(s
, 0x31, val
>> 8);
669 /* memory between 16MiB and 4GiB */
670 if (x86ms
->below_4g_mem_size
> 16 * MiB
) {
671 val
= (x86ms
->below_4g_mem_size
- 16 * MiB
) / (64 * KiB
);
677 rtc_set_memory(s
, 0x34, val
);
678 rtc_set_memory(s
, 0x35, val
>> 8);
679 /* memory above 4GiB */
680 val
= x86ms
->above_4g_mem_size
/ 65536;
681 rtc_set_memory(s
, 0x5b, val
);
682 rtc_set_memory(s
, 0x5c, val
>> 8);
683 rtc_set_memory(s
, 0x5d, val
>> 16);
685 object_property_add_link(OBJECT(pcms
), "rtc_state",
687 (Object
**)&x86ms
->rtc
,
688 object_property_allow_set_link
,
689 OBJ_PROP_LINK_STRONG
);
690 object_property_set_link(OBJECT(pcms
), "rtc_state", OBJECT(s
),
693 set_boot_dev(s
, MACHINE(pcms
)->boot_config
.order
, &error_fatal
);
696 val
|= 0x02; /* FPU is there */
697 val
|= 0x04; /* PS/2 mouse installed */
698 rtc_set_memory(s
, REG_EQUIPMENT_BYTE
, val
);
700 /* hard drives and FDC */
702 arg
.idebus
[0] = idebus0
;
703 arg
.idebus
[1] = idebus1
;
704 qemu_register_reset(pc_cmos_init_late
, &arg
);
707 static void handle_a20_line_change(void *opaque
, int irq
, int level
)
709 X86CPU
*cpu
= opaque
;
711 /* XXX: send to all CPUs ? */
712 /* XXX: add logic to handle multiple A20 line sources */
713 x86_cpu_set_a20(cpu
, level
);
716 #define NE2000_NB_MAX 6
718 static const int ne2000_io
[NE2000_NB_MAX
] = { 0x300, 0x320, 0x340, 0x360,
720 static const int ne2000_irq
[NE2000_NB_MAX
] = { 9, 10, 11, 3, 4, 5 };
722 static void pc_init_ne2k_isa(ISABus
*bus
, NICInfo
*nd
)
724 static int nb_ne2k
= 0;
726 if (nb_ne2k
== NE2000_NB_MAX
)
728 isa_ne2000_init(bus
, ne2000_io
[nb_ne2k
],
729 ne2000_irq
[nb_ne2k
], nd
);
733 void pc_acpi_smi_interrupt(void *opaque
, int irq
, int level
)
735 X86CPU
*cpu
= opaque
;
738 cpu_interrupt(CPU(cpu
), CPU_INTERRUPT_SMI
);
743 void pc_machine_done(Notifier
*notifier
, void *data
)
745 PCMachineState
*pcms
= container_of(notifier
,
746 PCMachineState
, machine_done
);
747 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
749 cxl_hook_up_pxb_registers(pcms
->bus
, &pcms
->cxl_devices_state
,
752 if (pcms
->cxl_devices_state
.is_enabled
) {
753 cxl_fmws_link_targets(&pcms
->cxl_devices_state
, &error_fatal
);
756 /* set the number of CPUs */
757 x86_rtc_set_cpus_count(x86ms
->rtc
, x86ms
->boot_cpus
);
759 fw_cfg_add_extra_pci_roots(pcms
->bus
, x86ms
->fw_cfg
);
763 fw_cfg_build_smbios(MACHINE(pcms
), x86ms
->fw_cfg
);
764 fw_cfg_build_feature_control(MACHINE(pcms
), x86ms
->fw_cfg
);
765 /* update FW_CFG_NB_CPUS to account for -device added CPUs */
766 fw_cfg_modify_i16(x86ms
->fw_cfg
, FW_CFG_NB_CPUS
, x86ms
->boot_cpus
);
770 void pc_guest_info_init(PCMachineState
*pcms
)
772 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
774 x86ms
->apic_xrupt_override
= true;
775 pcms
->machine_done
.notify
= pc_machine_done
;
776 qemu_add_machine_init_done_notifier(&pcms
->machine_done
);
779 /* setup pci memory address space mapping into system address space */
780 void pc_pci_as_mapping_init(Object
*owner
, MemoryRegion
*system_memory
,
781 MemoryRegion
*pci_address_space
)
783 /* Set to lower priority than RAM */
784 memory_region_add_subregion_overlap(system_memory
, 0x0,
785 pci_address_space
, -1);
788 void xen_load_linux(PCMachineState
*pcms
)
792 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
793 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
795 assert(MACHINE(pcms
)->kernel_filename
!= NULL
);
797 fw_cfg
= fw_cfg_init_io(FW_CFG_IO_BASE
);
798 fw_cfg_add_i16(fw_cfg
, FW_CFG_NB_CPUS
, x86ms
->boot_cpus
);
801 x86_load_linux(x86ms
, fw_cfg
, pcmc
->acpi_data_size
,
802 pcmc
->pvh_enabled
, pcmc
->legacy_no_rng_seed
);
803 for (i
= 0; i
< nb_option_roms
; i
++) {
804 assert(!strcmp(option_rom
[i
].name
, "linuxboot.bin") ||
805 !strcmp(option_rom
[i
].name
, "linuxboot_dma.bin") ||
806 !strcmp(option_rom
[i
].name
, "pvh.bin") ||
807 !strcmp(option_rom
[i
].name
, "multiboot.bin") ||
808 !strcmp(option_rom
[i
].name
, "multiboot_dma.bin"));
809 rom_add_option(option_rom
[i
].name
, option_rom
[i
].bootindex
);
811 x86ms
->fw_cfg
= fw_cfg
;
814 #define PC_ROM_MIN_VGA 0xc0000
815 #define PC_ROM_MIN_OPTION 0xc8000
816 #define PC_ROM_MAX 0xe0000
817 #define PC_ROM_ALIGN 0x800
818 #define PC_ROM_SIZE (PC_ROM_MAX - PC_ROM_MIN_VGA)
820 static hwaddr
pc_above_4g_end(PCMachineState
*pcms
)
822 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
824 if (pcms
->sgx_epc
.size
!= 0) {
825 return sgx_epc_above_4g_end(&pcms
->sgx_epc
);
828 return x86ms
->above_4g_mem_start
+ x86ms
->above_4g_mem_size
;
831 static void pc_get_device_memory_range(PCMachineState
*pcms
,
833 ram_addr_t
*device_mem_size
)
835 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
836 MachineState
*machine
= MACHINE(pcms
);
840 size
= machine
->maxram_size
- machine
->ram_size
;
841 addr
= ROUND_UP(pc_above_4g_end(pcms
), 1 * GiB
);
843 if (pcmc
->enforce_aligned_dimm
) {
844 /* size device region assuming 1G page max alignment per slot */
845 size
+= (1 * GiB
) * machine
->ram_slots
;
849 *device_mem_size
= size
;
852 static uint64_t pc_get_cxl_range_start(PCMachineState
*pcms
)
854 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
858 if (pcmc
->has_reserved_memory
) {
859 pc_get_device_memory_range(pcms
, &cxl_base
, &size
);
862 cxl_base
= pc_above_4g_end(pcms
);
868 static uint64_t pc_get_cxl_range_end(PCMachineState
*pcms
)
870 uint64_t start
= pc_get_cxl_range_start(pcms
) + MiB
;
872 if (pcms
->cxl_devices_state
.fixed_windows
) {
875 start
= ROUND_UP(start
, 256 * MiB
);
876 for (it
= pcms
->cxl_devices_state
.fixed_windows
; it
; it
= it
->next
) {
877 CXLFixedWindow
*fw
= it
->data
;
885 static hwaddr
pc_max_used_gpa(PCMachineState
*pcms
, uint64_t pci_hole64_size
)
887 X86CPU
*cpu
= X86_CPU(first_cpu
);
889 /* 32-bit systems don't have hole64 thus return max CPU address */
890 if (cpu
->phys_bits
<= 32) {
891 return ((hwaddr
)1 << cpu
->phys_bits
) - 1;
894 return pc_pci_hole64_start() + pci_hole64_size
- 1;
898 * AMD systems with an IOMMU have an additional hole close to the
899 * 1Tb, which are special GPAs that cannot be DMA mapped. Depending
900 * on kernel version, VFIO may or may not let you DMA map those ranges.
901 * Starting Linux v5.4 we validate it, and can't create guests on AMD machines
902 * with certain memory sizes. It's also wrong to use those IOVA ranges
903 * in detriment of leading to IOMMU INVALID_DEVICE_REQUEST or worse.
904 * The ranges reserved for Hyper-Transport are:
906 * FD_0000_0000h - FF_FFFF_FFFFh
908 * The ranges represent the following:
910 * Base Address Top Address Use
912 * FD_0000_0000h FD_F7FF_FFFFh Reserved interrupt address space
913 * FD_F800_0000h FD_F8FF_FFFFh Interrupt/EOI IntCtl
914 * FD_F900_0000h FD_F90F_FFFFh Legacy PIC IACK
915 * FD_F910_0000h FD_F91F_FFFFh System Management
916 * FD_F920_0000h FD_FAFF_FFFFh Reserved Page Tables
917 * FD_FB00_0000h FD_FBFF_FFFFh Address Translation
918 * FD_FC00_0000h FD_FDFF_FFFFh I/O Space
919 * FD_FE00_0000h FD_FFFF_FFFFh Configuration
920 * FE_0000_0000h FE_1FFF_FFFFh Extended Configuration/Device Messages
921 * FE_2000_0000h FF_FFFF_FFFFh Reserved
923 * See AMD IOMMU spec, section 2.1.2 "IOMMU Logical Topology",
924 * Table 3: Special Address Controls (GPA) for more information.
926 #define AMD_HT_START 0xfd00000000UL
927 #define AMD_HT_END 0xffffffffffUL
928 #define AMD_ABOVE_1TB_START (AMD_HT_END + 1)
929 #define AMD_HT_SIZE (AMD_ABOVE_1TB_START - AMD_HT_START)
931 void pc_memory_init(PCMachineState
*pcms
,
932 MemoryRegion
*system_memory
,
933 MemoryRegion
*rom_memory
,
934 MemoryRegion
**ram_memory
,
935 uint64_t pci_hole64_size
)
938 MemoryRegion
*option_rom_mr
;
939 MemoryRegion
*ram_below_4g
, *ram_above_4g
;
941 MachineState
*machine
= MACHINE(pcms
);
942 MachineClass
*mc
= MACHINE_GET_CLASS(machine
);
943 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
944 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
945 hwaddr maxphysaddr
, maxusedaddr
;
946 hwaddr cxl_base
, cxl_resv_end
= 0;
947 X86CPU
*cpu
= X86_CPU(first_cpu
);
949 assert(machine
->ram_size
== x86ms
->below_4g_mem_size
+
950 x86ms
->above_4g_mem_size
);
952 linux_boot
= (machine
->kernel_filename
!= NULL
);
955 * The HyperTransport range close to the 1T boundary is unique to AMD
956 * hosts with IOMMUs enabled. Restrict the ram-above-4g relocation
957 * to above 1T to AMD vCPUs only. @enforce_amd_1tb_hole is only false in
958 * older machine types (<= 7.0) for compatibility purposes.
960 if (IS_AMD_CPU(&cpu
->env
) && pcmc
->enforce_amd_1tb_hole
) {
961 /* Bail out if max possible address does not cross HT range */
962 if (pc_max_used_gpa(pcms
, pci_hole64_size
) >= AMD_HT_START
) {
963 x86ms
->above_4g_mem_start
= AMD_ABOVE_1TB_START
;
967 * Advertise the HT region if address space covers the reserved
968 * region or if we relocate.
970 if (cpu
->phys_bits
>= 40) {
971 e820_add_entry(AMD_HT_START
, AMD_HT_SIZE
, E820_RESERVED
);
976 * phys-bits is required to be appropriately configured
977 * to make sure max used GPA is reachable.
979 maxusedaddr
= pc_max_used_gpa(pcms
, pci_hole64_size
);
980 maxphysaddr
= ((hwaddr
)1 << cpu
->phys_bits
) - 1;
981 if (maxphysaddr
< maxusedaddr
) {
982 error_report("Address space limit 0x%"PRIx64
" < 0x%"PRIx64
983 " phys-bits too low (%u)",
984 maxphysaddr
, maxusedaddr
, cpu
->phys_bits
);
989 * Split single memory region and use aliases to address portions of it,
990 * done for backwards compatibility with older qemus.
992 *ram_memory
= machine
->ram
;
993 ram_below_4g
= g_malloc(sizeof(*ram_below_4g
));
994 memory_region_init_alias(ram_below_4g
, NULL
, "ram-below-4g", machine
->ram
,
995 0, x86ms
->below_4g_mem_size
);
996 memory_region_add_subregion(system_memory
, 0, ram_below_4g
);
997 e820_add_entry(0, x86ms
->below_4g_mem_size
, E820_RAM
);
998 if (x86ms
->above_4g_mem_size
> 0) {
999 ram_above_4g
= g_malloc(sizeof(*ram_above_4g
));
1000 memory_region_init_alias(ram_above_4g
, NULL
, "ram-above-4g",
1002 x86ms
->below_4g_mem_size
,
1003 x86ms
->above_4g_mem_size
);
1004 memory_region_add_subregion(system_memory
, x86ms
->above_4g_mem_start
,
1006 e820_add_entry(x86ms
->above_4g_mem_start
, x86ms
->above_4g_mem_size
,
1010 if (pcms
->sgx_epc
.size
!= 0) {
1011 e820_add_entry(pcms
->sgx_epc
.base
, pcms
->sgx_epc
.size
, E820_RESERVED
);
1014 if (!pcmc
->has_reserved_memory
&&
1015 (machine
->ram_slots
||
1016 (machine
->maxram_size
> machine
->ram_size
))) {
1018 error_report("\"-memory 'slots|maxmem'\" is not supported by: %s",
1023 /* always allocate the device memory information */
1024 machine
->device_memory
= g_malloc0(sizeof(*machine
->device_memory
));
1026 /* initialize device memory address space */
1027 if (pcmc
->has_reserved_memory
&&
1028 (machine
->ram_size
< machine
->maxram_size
)) {
1029 ram_addr_t device_mem_size
;
1031 if (machine
->ram_slots
> ACPI_MAX_RAM_SLOTS
) {
1032 error_report("unsupported amount of memory slots: %"PRIu64
,
1033 machine
->ram_slots
);
1037 if (QEMU_ALIGN_UP(machine
->maxram_size
,
1038 TARGET_PAGE_SIZE
) != machine
->maxram_size
) {
1039 error_report("maximum memory size must by aligned to multiple of "
1040 "%d bytes", TARGET_PAGE_SIZE
);
1044 pc_get_device_memory_range(pcms
, &machine
->device_memory
->base
, &device_mem_size
);
1046 if ((machine
->device_memory
->base
+ device_mem_size
) <
1048 error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT
,
1049 machine
->maxram_size
);
1053 memory_region_init(&machine
->device_memory
->mr
, OBJECT(pcms
),
1054 "device-memory", device_mem_size
);
1055 memory_region_add_subregion(system_memory
, machine
->device_memory
->base
,
1056 &machine
->device_memory
->mr
);
1059 if (pcms
->cxl_devices_state
.is_enabled
) {
1060 MemoryRegion
*mr
= &pcms
->cxl_devices_state
.host_mr
;
1061 hwaddr cxl_size
= MiB
;
1063 cxl_base
= pc_get_cxl_range_start(pcms
);
1064 e820_add_entry(cxl_base
, cxl_size
, E820_RESERVED
);
1065 memory_region_init(mr
, OBJECT(machine
), "cxl_host_reg", cxl_size
);
1066 memory_region_add_subregion(system_memory
, cxl_base
, mr
);
1067 cxl_resv_end
= cxl_base
+ cxl_size
;
1068 if (pcms
->cxl_devices_state
.fixed_windows
) {
1069 hwaddr cxl_fmw_base
;
1072 cxl_fmw_base
= ROUND_UP(cxl_base
+ cxl_size
, 256 * MiB
);
1073 for (it
= pcms
->cxl_devices_state
.fixed_windows
; it
; it
= it
->next
) {
1074 CXLFixedWindow
*fw
= it
->data
;
1076 fw
->base
= cxl_fmw_base
;
1077 memory_region_init_io(&fw
->mr
, OBJECT(machine
), &cfmws_ops
, fw
,
1078 "cxl-fixed-memory-region", fw
->size
);
1079 memory_region_add_subregion(system_memory
, fw
->base
, &fw
->mr
);
1080 e820_add_entry(fw
->base
, fw
->size
, E820_RESERVED
);
1081 cxl_fmw_base
+= fw
->size
;
1082 cxl_resv_end
= cxl_fmw_base
;
1087 /* Initialize PC system firmware */
1088 pc_system_firmware_init(pcms
, rom_memory
);
1090 option_rom_mr
= g_malloc(sizeof(*option_rom_mr
));
1091 memory_region_init_ram(option_rom_mr
, NULL
, "pc.rom", PC_ROM_SIZE
,
1093 if (pcmc
->pci_enabled
) {
1094 memory_region_set_readonly(option_rom_mr
, true);
1096 memory_region_add_subregion_overlap(rom_memory
,
1101 fw_cfg
= fw_cfg_arch_create(machine
,
1102 x86ms
->boot_cpus
, x86ms
->apic_id_limit
);
1106 if (pcmc
->has_reserved_memory
&& machine
->device_memory
->base
) {
1107 uint64_t *val
= g_malloc(sizeof(*val
));
1108 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
1109 uint64_t res_mem_end
= machine
->device_memory
->base
;
1111 if (!pcmc
->broken_reserved_end
) {
1112 res_mem_end
+= memory_region_size(&machine
->device_memory
->mr
);
1115 if (pcms
->cxl_devices_state
.is_enabled
) {
1116 res_mem_end
= cxl_resv_end
;
1118 *val
= cpu_to_le64(ROUND_UP(res_mem_end
, 1 * GiB
));
1119 fw_cfg_add_file(fw_cfg
, "etc/reserved-memory-end", val
, sizeof(*val
));
1123 x86_load_linux(x86ms
, fw_cfg
, pcmc
->acpi_data_size
,
1124 pcmc
->pvh_enabled
, pcmc
->legacy_no_rng_seed
);
1127 for (i
= 0; i
< nb_option_roms
; i
++) {
1128 rom_add_option(option_rom
[i
].name
, option_rom
[i
].bootindex
);
1130 x86ms
->fw_cfg
= fw_cfg
;
1132 /* Init default IOAPIC address space */
1133 x86ms
->ioapic_as
= &address_space_memory
;
1135 /* Init ACPI memory hotplug IO base address */
1136 pcms
->memhp_io_base
= ACPI_MEMORY_HOTPLUG_BASE
;
1140 * The 64bit pci hole starts after "above 4G RAM" and
1141 * potentially the space reserved for memory hotplug.
1143 uint64_t pc_pci_hole64_start(void)
1145 PCMachineState
*pcms
= PC_MACHINE(qdev_get_machine());
1146 PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
1147 MachineState
*ms
= MACHINE(pcms
);
1148 uint64_t hole64_start
= 0;
1149 ram_addr_t size
= 0;
1151 if (pcms
->cxl_devices_state
.is_enabled
) {
1152 hole64_start
= pc_get_cxl_range_end(pcms
);
1153 } else if (pcmc
->has_reserved_memory
&& (ms
->ram_size
< ms
->maxram_size
)) {
1154 pc_get_device_memory_range(pcms
, &hole64_start
, &size
);
1155 if (!pcmc
->broken_reserved_end
) {
1156 hole64_start
+= size
;
1159 hole64_start
= pc_above_4g_end(pcms
);
1162 return ROUND_UP(hole64_start
, 1 * GiB
);
1165 DeviceState
*pc_vga_init(ISABus
*isa_bus
, PCIBus
*pci_bus
)
1167 DeviceState
*dev
= NULL
;
1169 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_VGA
);
1171 PCIDevice
*pcidev
= pci_vga_init(pci_bus
);
1172 dev
= pcidev
? &pcidev
->qdev
: NULL
;
1173 } else if (isa_bus
) {
1174 ISADevice
*isadev
= isa_vga_init(isa_bus
);
1175 dev
= isadev
? DEVICE(isadev
) : NULL
;
1177 rom_reset_order_override();
1181 static const MemoryRegionOps ioport80_io_ops
= {
1182 .write
= ioport80_write
,
1183 .read
= ioport80_read
,
1184 .endianness
= DEVICE_NATIVE_ENDIAN
,
1186 .min_access_size
= 1,
1187 .max_access_size
= 1,
1191 static const MemoryRegionOps ioportF0_io_ops
= {
1192 .write
= ioportF0_write
,
1193 .read
= ioportF0_read
,
1194 .endianness
= DEVICE_NATIVE_ENDIAN
,
1196 .min_access_size
= 1,
1197 .max_access_size
= 1,
1201 static void pc_superio_init(ISABus
*isa_bus
, bool create_fdctrl
,
1202 bool create_i8042
, bool no_vmport
)
1205 DriveInfo
*fd
[MAX_FD
];
1207 ISADevice
*fdc
, *i8042
, *port92
, *vmmouse
;
1209 serial_hds_isa_init(isa_bus
, 0, MAX_ISA_SERIAL_PORTS
);
1210 parallel_hds_isa_init(isa_bus
, MAX_PARALLEL_PORTS
);
1212 for (i
= 0; i
< MAX_FD
; i
++) {
1213 fd
[i
] = drive_get(IF_FLOPPY
, 0, i
);
1214 create_fdctrl
|= !!fd
[i
];
1216 if (create_fdctrl
) {
1217 fdc
= isa_new(TYPE_ISA_FDC
);
1219 isa_realize_and_unref(fdc
, isa_bus
, &error_fatal
);
1220 isa_fdc_init_drives(fdc
, fd
);
1224 if (!create_i8042
) {
1228 i8042
= isa_create_simple(isa_bus
, TYPE_I8042
);
1230 isa_create_simple(isa_bus
, TYPE_VMPORT
);
1231 vmmouse
= isa_try_new("vmmouse");
1236 object_property_set_link(OBJECT(vmmouse
), TYPE_I8042
, OBJECT(i8042
),
1238 isa_realize_and_unref(vmmouse
, isa_bus
, &error_fatal
);
1240 port92
= isa_create_simple(isa_bus
, TYPE_PORT92
);
1242 a20_line
= qemu_allocate_irqs(handle_a20_line_change
, first_cpu
, 2);
1243 i8042_setup_a20_line(i8042
, a20_line
[0]);
1244 qdev_connect_gpio_out_named(DEVICE(port92
),
1245 PORT92_A20_LINE
, 0, a20_line
[1]);
1249 void pc_basic_device_init(struct PCMachineState
*pcms
,
1250 ISABus
*isa_bus
, qemu_irq
*gsi
,
1251 ISADevice
**rtc_state
,
1256 DeviceState
*hpet
= NULL
;
1257 int pit_isa_irq
= 0;
1258 qemu_irq pit_alt_irq
= NULL
;
1259 qemu_irq rtc_irq
= NULL
;
1260 ISADevice
*pit
= NULL
;
1261 MemoryRegion
*ioport80_io
= g_new(MemoryRegion
, 1);
1262 MemoryRegion
*ioportF0_io
= g_new(MemoryRegion
, 1);
1263 X86MachineState
*x86ms
= X86_MACHINE(pcms
);
1265 memory_region_init_io(ioport80_io
, NULL
, &ioport80_io_ops
, NULL
, "ioport80", 1);
1266 memory_region_add_subregion(isa_bus
->address_space_io
, 0x80, ioport80_io
);
1268 memory_region_init_io(ioportF0_io
, NULL
, &ioportF0_io_ops
, NULL
, "ioportF0", 1);
1269 memory_region_add_subregion(isa_bus
->address_space_io
, 0xf0, ioportF0_io
);
1272 * Check if an HPET shall be created.
1274 * Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT
1275 * when the HPET wants to take over. Thus we have to disable the latter.
1277 if (pcms
->hpet_enabled
&& (!kvm_irqchip_in_kernel() ||
1278 kvm_has_pit_state2())) {
1279 hpet
= qdev_try_new(TYPE_HPET
);
1281 error_report("couldn't create HPET device");
1285 * For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7 and
1286 * earlier, use IRQ2 for compat. Otherwise, use IRQ16~23, IRQ8 and
1289 uint8_t compat
= object_property_get_uint(OBJECT(hpet
),
1292 qdev_prop_set_uint32(hpet
, HPET_INTCAP
, hpet_irqs
);
1294 sysbus_realize_and_unref(SYS_BUS_DEVICE(hpet
), &error_fatal
);
1295 sysbus_mmio_map(SYS_BUS_DEVICE(hpet
), 0, HPET_BASE
);
1297 for (i
= 0; i
< GSI_NUM_PINS
; i
++) {
1298 sysbus_connect_irq(SYS_BUS_DEVICE(hpet
), i
, gsi
[i
]);
1301 pit_alt_irq
= qdev_get_gpio_in(hpet
, HPET_LEGACY_PIT_INT
);
1302 rtc_irq
= qdev_get_gpio_in(hpet
, HPET_LEGACY_RTC_INT
);
1304 *rtc_state
= mc146818_rtc_init(isa_bus
, 2000, rtc_irq
);
1306 qemu_register_boot_set(pc_boot_set
, *rtc_state
);
1308 if (!xen_enabled() &&
1309 (x86ms
->pit
== ON_OFF_AUTO_AUTO
|| x86ms
->pit
== ON_OFF_AUTO_ON
)) {
1310 if (kvm_pit_in_kernel()) {
1311 pit
= kvm_pit_init(isa_bus
, 0x40);
1313 pit
= i8254_pit_init(isa_bus
, 0x40, pit_isa_irq
, pit_alt_irq
);
1316 /* connect PIT to output control line of the HPET */
1317 qdev_connect_gpio_out(hpet
, 0, qdev_get_gpio_in(DEVICE(pit
), 0));
1319 pcspk_init(pcms
->pcspk
, isa_bus
, pit
);
1322 i8257_dma_init(isa_bus
, 0);
1325 pc_superio_init(isa_bus
, create_fdctrl
, pcms
->i8042_enabled
,
1326 pcms
->vmport
!= ON_OFF_AUTO_ON
);
1329 void pc_nic_init(PCMachineClass
*pcmc
, ISABus
*isa_bus
, PCIBus
*pci_bus
)
1333 rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC
);
1334 for (i
= 0; i
< nb_nics
; i
++) {
1335 NICInfo
*nd
= &nd_table
[i
];
1336 const char *model
= nd
->model
? nd
->model
: pcmc
->default_nic_model
;
1338 if (g_str_equal(model
, "ne2k_isa")) {
1339 pc_init_ne2k_isa(isa_bus
, nd
);
1341 pci_nic_init_nofail(nd
, pci_bus
, model
, NULL
);
1344 rom_reset_order_override();
1347 void pc_i8259_create(ISABus
*isa_bus
, qemu_irq
*i8259_irqs
)
1351 if (kvm_pic_in_kernel()) {
1352 i8259
= kvm_i8259_init(isa_bus
);
1353 } else if (xen_enabled()) {
1354 i8259
= xen_interrupt_controller_init();
1356 i8259
= i8259_init(isa_bus
, x86_allocate_cpu_irq());
1359 for (size_t i
= 0; i
< ISA_NUM_IRQS
; i
++) {
1360 i8259_irqs
[i
] = i8259
[i
];
1366 static void pc_memory_pre_plug(HotplugHandler
*hotplug_dev
, DeviceState
*dev
,
1369 const PCMachineState
*pcms
= PC_MACHINE(hotplug_dev
);
1370 const X86MachineState
*x86ms
= X86_MACHINE(hotplug_dev
);
1371 const PCMachineClass
*pcmc
= PC_MACHINE_GET_CLASS(pcms
);
1372 const MachineState
*ms
= MACHINE(hotplug_dev
);
1373 const bool is_nvdimm
= object_dynamic_cast(OBJECT(dev
), TYPE_NVDIMM
);
1374 const uint64_t legacy_align
= TARGET_PAGE_SIZE
;
1375 Error
*local_err
= NULL
;
1378 * When -no-acpi is used with Q35 machine type, no ACPI is built,
1379 * but pcms->acpi_dev is still created. Check !acpi_enabled in
1380 * addition to cover this case.
1382 if (!x86ms
->acpi_dev
|| !x86_machine_is_acpi_enabled(x86ms
)) {
1384 "memory hotplug is not enabled: missing acpi device or acpi disabled");
1388 if (is_nvdimm
&& !ms
->nvdimms_state
->is_enabled
) {
1389 error_setg(errp
, "nvdimm is not enabled: missing 'nvdimm' in '-M'");
1393 hotplug_handler_pre_plug(x86ms
->acpi_dev
, dev
, &local_err
);
1395 error_propagate(errp
, local_err
);
1399 pc_dimm_pre_plug(PC_DIMM(dev
), MACHINE(hotplug_dev
),
1400 pcmc
->enforce_aligned_dimm
? NULL
: &legacy_align
, errp
);
1403 static void pc_memory_plug(HotplugHandler
*hotplug_dev
,
1404 DeviceState
*dev
, Error
**errp
)
1406 PCMachineState
*pcms
= PC_MACHINE(hotplug_dev
);
1407 X86MachineState
*x86ms
= X86_MACHINE(hotplug_dev
);
1408 MachineState
*ms
= MACHINE(hotplug_dev
);
1409 bool is_nvdimm
= object_dynamic_cast(OBJECT(dev
), TYPE_NVDIMM
);
1411 pc_dimm_plug(PC_DIMM(dev
), MACHINE(pcms
));
1414 nvdimm_plug(ms
->nvdimms_state
);
1417 hotplug_handler_plug(x86ms
->acpi_dev
, dev
, &error_abort
);
1420 static void pc_memory_unplug_request(HotplugHandler
*hotplug_dev
,
1421 DeviceState
*dev
, Error
**errp
)
1423 X86MachineState
*x86ms
= X86_MACHINE(hotplug_dev
);
1426 * When -no-acpi is used with Q35 machine type, no ACPI is built,
1427 * but pcms->acpi_dev is still created. Check !acpi_enabled in
1428 * addition to cover this case.
1430 if (!x86ms
->acpi_dev
|| !x86_machine_is_acpi_enabled(x86ms
)) {
1432 "memory hotplug is not enabled: missing acpi device or acpi disabled");
1436 if (object_dynamic_cast(OBJECT(dev
), TYPE_NVDIMM
)) {
1437 error_setg(errp
, "nvdimm device hot unplug is not supported yet.");
1441 hotplug_handler_unplug_request(x86ms
->acpi_dev
, dev
,
1445 static void pc_memory_unplug(HotplugHandler
*hotplug_dev
,
1446 DeviceState
*dev
, Error
**errp
)
1448 PCMachineState
*pcms
= PC_MACHINE(hotplug_dev
);
1449 X86MachineState
*x86ms
= X86_MACHINE(hotplug_dev
);
1450 Error
*local_err
= NULL
;
1452 hotplug_handler_unplug(x86ms
->acpi_dev
, dev
, &local_err
);
1457 pc_dimm_unplug(PC_DIMM(dev
), MACHINE(pcms
));
1458 qdev_unrealize(dev
);
1460 error_propagate(errp
, local_err
);
1463 static void pc_virtio_md_pci_pre_plug(HotplugHandler
*hotplug_dev
,
1464 DeviceState
*dev
, Error
**errp
)
1466 HotplugHandler
*hotplug_dev2
= qdev_get_bus_hotplug_handler(dev
);
1467 Error
*local_err
= NULL
;
1469 if (!hotplug_dev2
&& dev
->hotplugged
) {
1471 * Without a bus hotplug handler, we cannot control the plug/unplug
1472 * order. We should never reach this point when hotplugging on x86,
1473 * however, better add a safety net.
1475 error_setg(errp
, "hotplug of virtio based memory devices not supported"
1480 * First, see if we can plug this memory device at all. If that
1481 * succeeds, branch of to the actual hotplug handler.
1483 memory_device_pre_plug(MEMORY_DEVICE(dev
), MACHINE(hotplug_dev
), NULL
,
1485 if (!local_err
&& hotplug_dev2
) {
1486 hotplug_handler_pre_plug(hotplug_dev2
, dev
, &local_err
);
1488 error_propagate(errp
, local_err
);
1491 static void pc_virtio_md_pci_plug(HotplugHandler
*hotplug_dev
,
1492 DeviceState
*dev
, Error
**errp
)
1494 HotplugHandler
*hotplug_dev2
= qdev_get_bus_hotplug_handler(dev
);
1495 Error
*local_err
= NULL
;
1498 * Plug the memory device first and then branch off to the actual
1499 * hotplug handler. If that one fails, we can easily undo the memory
1502 memory_device_plug(MEMORY_DEVICE(dev
), MACHINE(hotplug_dev
));
1504 hotplug_handler_plug(hotplug_dev2
, dev
, &local_err
);
1506 memory_device_unplug(MEMORY_DEVICE(dev
), MACHINE(hotplug_dev
));
1509 error_propagate(errp
, local_err
);
1512 static void pc_virtio_md_pci_unplug_request(HotplugHandler
*hotplug_dev
,
1513 DeviceState
*dev
, Error
**errp
)
1515 /* We don't support hot unplug of virtio based memory devices */
1516 error_setg(errp
, "virtio based memory devices cannot be unplugged.");
1519 static void pc_virtio_md_pci_unplug(HotplugHandler
*hotplug_dev
,
1520 DeviceState
*dev
, Error
**errp
)
1522 /* We don't support hot unplug of virtio based memory devices */
1525 static void pc_machine_device_pre_plug_cb(HotplugHandler
*hotplug_dev
,
1526 DeviceState
*dev
, Error
**errp
)
1528 if (object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
1529 pc_memory_pre_plug(hotplug_dev
, dev
, errp
);
1530 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_CPU
)) {
1531 x86_cpu_pre_plug(hotplug_dev
, dev
, errp
);
1532 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_PMEM_PCI
) ||
1533 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_MEM_PCI
)) {
1534 pc_virtio_md_pci_pre_plug(hotplug_dev
, dev
, errp
);
1535 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_IOMMU_PCI
)) {
1536 /* Declare the APIC range as the reserved MSI region */
1537 char *resv_prop_str
= g_strdup_printf("0xfee00000:0xfeefffff:%d",
1538 VIRTIO_IOMMU_RESV_MEM_T_MSI
);
1540 object_property_set_uint(OBJECT(dev
), "len-reserved-regions", 1, errp
);
1541 object_property_set_str(OBJECT(dev
), "reserved-regions[0]",
1542 resv_prop_str
, errp
);
1543 g_free(resv_prop_str
);
1546 if (object_dynamic_cast(OBJECT(dev
), TYPE_X86_IOMMU_DEVICE
) ||
1547 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_IOMMU_PCI
)) {
1548 PCMachineState
*pcms
= PC_MACHINE(hotplug_dev
);
1551 error_setg(errp
, "QEMU does not support multiple vIOMMUs "
1559 static void pc_machine_device_plug_cb(HotplugHandler
*hotplug_dev
,
1560 DeviceState
*dev
, Error
**errp
)
1562 if (object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
1563 pc_memory_plug(hotplug_dev
, dev
, errp
);
1564 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_CPU
)) {
1565 x86_cpu_plug(hotplug_dev
, dev
, errp
);
1566 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_PMEM_PCI
) ||
1567 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_MEM_PCI
)) {
1568 pc_virtio_md_pci_plug(hotplug_dev
, dev
, errp
);
1572 static void pc_machine_device_unplug_request_cb(HotplugHandler
*hotplug_dev
,
1573 DeviceState
*dev
, Error
**errp
)
1575 if (object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
1576 pc_memory_unplug_request(hotplug_dev
, dev
, errp
);
1577 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_CPU
)) {
1578 x86_cpu_unplug_request_cb(hotplug_dev
, dev
, errp
);
1579 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_PMEM_PCI
) ||
1580 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_MEM_PCI
)) {
1581 pc_virtio_md_pci_unplug_request(hotplug_dev
, dev
, errp
);
1583 error_setg(errp
, "acpi: device unplug request for not supported device"
1584 " type: %s", object_get_typename(OBJECT(dev
)));
1588 static void pc_machine_device_unplug_cb(HotplugHandler
*hotplug_dev
,
1589 DeviceState
*dev
, Error
**errp
)
1591 if (object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
)) {
1592 pc_memory_unplug(hotplug_dev
, dev
, errp
);
1593 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_CPU
)) {
1594 x86_cpu_unplug_cb(hotplug_dev
, dev
, errp
);
1595 } else if (object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_PMEM_PCI
) ||
1596 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_MEM_PCI
)) {
1597 pc_virtio_md_pci_unplug(hotplug_dev
, dev
, errp
);
1599 error_setg(errp
, "acpi: device unplug for not supported device"
1600 " type: %s", object_get_typename(OBJECT(dev
)));
1604 static HotplugHandler
*pc_get_hotplug_handler(MachineState
*machine
,
1607 if (object_dynamic_cast(OBJECT(dev
), TYPE_PC_DIMM
) ||
1608 object_dynamic_cast(OBJECT(dev
), TYPE_CPU
) ||
1609 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_PMEM_PCI
) ||
1610 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_MEM_PCI
) ||
1611 object_dynamic_cast(OBJECT(dev
), TYPE_VIRTIO_IOMMU_PCI
) ||
1612 object_dynamic_cast(OBJECT(dev
), TYPE_X86_IOMMU_DEVICE
)) {
1613 return HOTPLUG_HANDLER(machine
);
1620 pc_machine_get_device_memory_region_size(Object
*obj
, Visitor
*v
,
1621 const char *name
, void *opaque
,
1624 MachineState
*ms
= MACHINE(obj
);
1627 if (ms
->device_memory
) {
1628 value
= memory_region_size(&ms
->device_memory
->mr
);
1631 visit_type_int(v
, name
, &value
, errp
);
1634 static void pc_machine_get_vmport(Object
*obj
, Visitor
*v
, const char *name
,
1635 void *opaque
, Error
**errp
)
1637 PCMachineState
*pcms
= PC_MACHINE(obj
);
1638 OnOffAuto vmport
= pcms
->vmport
;
1640 visit_type_OnOffAuto(v
, name
, &vmport
, errp
);
1643 static void pc_machine_set_vmport(Object
*obj
, Visitor
*v
, const char *name
,
1644 void *opaque
, Error
**errp
)
1646 PCMachineState
*pcms
= PC_MACHINE(obj
);
1648 visit_type_OnOffAuto(v
, name
, &pcms
->vmport
, errp
);
1651 static bool pc_machine_get_smbus(Object
*obj
, Error
**errp
)
1653 PCMachineState
*pcms
= PC_MACHINE(obj
);
1655 return pcms
->smbus_enabled
;
1658 static void pc_machine_set_smbus(Object
*obj
, bool value
, Error
**errp
)
1660 PCMachineState
*pcms
= PC_MACHINE(obj
);
1662 pcms
->smbus_enabled
= value
;
1665 static bool pc_machine_get_sata(Object
*obj
, Error
**errp
)
1667 PCMachineState
*pcms
= PC_MACHINE(obj
);
1669 return pcms
->sata_enabled
;
1672 static void pc_machine_set_sata(Object
*obj
, bool value
, Error
**errp
)
1674 PCMachineState
*pcms
= PC_MACHINE(obj
);
1676 pcms
->sata_enabled
= value
;
1679 static bool pc_machine_get_hpet(Object
*obj
, Error
**errp
)
1681 PCMachineState
*pcms
= PC_MACHINE(obj
);
1683 return pcms
->hpet_enabled
;
1686 static void pc_machine_set_hpet(Object
*obj
, bool value
, Error
**errp
)
1688 PCMachineState
*pcms
= PC_MACHINE(obj
);
1690 pcms
->hpet_enabled
= value
;
1693 static bool pc_machine_get_i8042(Object
*obj
, Error
**errp
)
1695 PCMachineState
*pcms
= PC_MACHINE(obj
);
1697 return pcms
->i8042_enabled
;
1700 static void pc_machine_set_i8042(Object
*obj
, bool value
, Error
**errp
)
1702 PCMachineState
*pcms
= PC_MACHINE(obj
);
1704 pcms
->i8042_enabled
= value
;
1707 static bool pc_machine_get_default_bus_bypass_iommu(Object
*obj
, Error
**errp
)
1709 PCMachineState
*pcms
= PC_MACHINE(obj
);
1711 return pcms
->default_bus_bypass_iommu
;
1714 static void pc_machine_set_default_bus_bypass_iommu(Object
*obj
, bool value
,
1717 PCMachineState
*pcms
= PC_MACHINE(obj
);
1719 pcms
->default_bus_bypass_iommu
= value
;
1722 static void pc_machine_get_smbios_ep(Object
*obj
, Visitor
*v
, const char *name
,
1723 void *opaque
, Error
**errp
)
1725 PCMachineState
*pcms
= PC_MACHINE(obj
);
1726 SmbiosEntryPointType smbios_entry_point_type
= pcms
->smbios_entry_point_type
;
1728 visit_type_SmbiosEntryPointType(v
, name
, &smbios_entry_point_type
, errp
);
1731 static void pc_machine_set_smbios_ep(Object
*obj
, Visitor
*v
, const char *name
,
1732 void *opaque
, Error
**errp
)
1734 PCMachineState
*pcms
= PC_MACHINE(obj
);
1736 visit_type_SmbiosEntryPointType(v
, name
, &pcms
->smbios_entry_point_type
, errp
);
1739 static void pc_machine_get_max_ram_below_4g(Object
*obj
, Visitor
*v
,
1740 const char *name
, void *opaque
,
1743 PCMachineState
*pcms
= PC_MACHINE(obj
);
1744 uint64_t value
= pcms
->max_ram_below_4g
;
1746 visit_type_size(v
, name
, &value
, errp
);
1749 static void pc_machine_set_max_ram_below_4g(Object
*obj
, Visitor
*v
,
1750 const char *name
, void *opaque
,
1753 PCMachineState
*pcms
= PC_MACHINE(obj
);
1756 if (!visit_type_size(v
, name
, &value
, errp
)) {
1759 if (value
> 4 * GiB
) {
1761 "Machine option 'max-ram-below-4g=%"PRIu64
1762 "' expects size less than or equal to 4G", value
);
1766 if (value
< 1 * MiB
) {
1767 warn_report("Only %" PRIu64
" bytes of RAM below the 4GiB boundary,"
1768 "BIOS may not work with less than 1MiB", value
);
1771 pcms
->max_ram_below_4g
= value
;
1774 static void pc_machine_get_max_fw_size(Object
*obj
, Visitor
*v
,
1775 const char *name
, void *opaque
,
1778 PCMachineState
*pcms
= PC_MACHINE(obj
);
1779 uint64_t value
= pcms
->max_fw_size
;
1781 visit_type_size(v
, name
, &value
, errp
);
1784 static void pc_machine_set_max_fw_size(Object
*obj
, Visitor
*v
,
1785 const char *name
, void *opaque
,
1788 PCMachineState
*pcms
= PC_MACHINE(obj
);
1789 Error
*error
= NULL
;
1792 visit_type_size(v
, name
, &value
, &error
);
1794 error_propagate(errp
, error
);
1799 * We don't have a theoretically justifiable exact lower bound on the base
1800 * address of any flash mapping. In practice, the IO-APIC MMIO range is
1801 * [0xFEE00000..0xFEE01000] -- see IO_APIC_DEFAULT_ADDRESS --, leaving free
1802 * only 18MB-4KB below 4G. For now, restrict the cumulative mapping to 8MB in
1805 if (value
> 16 * MiB
) {
1807 "User specified max allowed firmware size %" PRIu64
" is "
1808 "greater than 16MiB. If combined firwmare size exceeds "
1809 "16MiB the system may not boot, or experience intermittent"
1810 "stability issues.",
1815 pcms
->max_fw_size
= value
;
1819 static void pc_machine_initfn(Object
*obj
)
1821 PCMachineState
*pcms
= PC_MACHINE(obj
);
1823 #ifdef CONFIG_VMPORT
1824 pcms
->vmport
= ON_OFF_AUTO_AUTO
;
1826 pcms
->vmport
= ON_OFF_AUTO_OFF
;
1827 #endif /* CONFIG_VMPORT */
1828 pcms
->max_ram_below_4g
= 0; /* use default */
1829 pcms
->smbios_entry_point_type
= SMBIOS_ENTRY_POINT_TYPE_32
;
1831 /* acpi build is enabled by default if machine supports it */
1832 pcms
->acpi_build_enabled
= PC_MACHINE_GET_CLASS(pcms
)->has_acpi_build
;
1833 pcms
->smbus_enabled
= true;
1834 pcms
->sata_enabled
= true;
1835 pcms
->i8042_enabled
= true;
1836 pcms
->max_fw_size
= 8 * MiB
;
1838 pcms
->hpet_enabled
= true;
1840 pcms
->default_bus_bypass_iommu
= false;
1842 pc_system_flash_create(pcms
);
1843 pcms
->pcspk
= isa_new(TYPE_PC_SPEAKER
);
1844 object_property_add_alias(OBJECT(pcms
), "pcspk-audiodev",
1845 OBJECT(pcms
->pcspk
), "audiodev");
1846 cxl_machine_init(obj
, &pcms
->cxl_devices_state
);
1849 static void pc_machine_reset(MachineState
*machine
)
1854 qemu_devices_reset();
1856 /* Reset APIC after devices have been reset to cancel
1857 * any changes that qemu_devices_reset() might have done.
1862 if (cpu
->apic_state
) {
1863 device_legacy_reset(cpu
->apic_state
);
1868 static void pc_machine_wakeup(MachineState
*machine
)
1870 cpu_synchronize_all_states();
1871 pc_machine_reset(machine
);
1872 cpu_synchronize_all_post_reset();
1875 static bool pc_hotplug_allowed(MachineState
*ms
, DeviceState
*dev
, Error
**errp
)
1877 X86IOMMUState
*iommu
= x86_iommu_get_default();
1878 IntelIOMMUState
*intel_iommu
;
1881 object_dynamic_cast((Object
*)iommu
, TYPE_INTEL_IOMMU_DEVICE
) &&
1882 object_dynamic_cast((Object
*)dev
, "vfio-pci")) {
1883 intel_iommu
= INTEL_IOMMU_DEVICE(iommu
);
1884 if (!intel_iommu
->caching_mode
) {
1885 error_setg(errp
, "Device assignment is not allowed without "
1886 "enabling caching-mode=on for Intel IOMMU.");
1894 static void pc_machine_class_init(ObjectClass
*oc
, void *data
)
1896 MachineClass
*mc
= MACHINE_CLASS(oc
);
1897 PCMachineClass
*pcmc
= PC_MACHINE_CLASS(oc
);
1898 HotplugHandlerClass
*hc
= HOTPLUG_HANDLER_CLASS(oc
);
1900 pcmc
->pci_enabled
= true;
1901 pcmc
->has_acpi_build
= true;
1902 pcmc
->rsdp_in_ram
= true;
1903 pcmc
->smbios_defaults
= true;
1904 pcmc
->smbios_uuid_encoded
= true;
1905 pcmc
->gigabyte_align
= true;
1906 pcmc
->has_reserved_memory
= true;
1907 pcmc
->kvmclock_enabled
= true;
1908 pcmc
->enforce_aligned_dimm
= true;
1909 pcmc
->enforce_amd_1tb_hole
= true;
1910 /* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported
1911 * to be used at the moment, 32K should be enough for a while. */
1912 pcmc
->acpi_data_size
= 0x20000 + 0x8000;
1913 pcmc
->pvh_enabled
= true;
1914 pcmc
->kvmclock_create_always
= true;
1915 assert(!mc
->get_hotplug_handler
);
1916 mc
->get_hotplug_handler
= pc_get_hotplug_handler
;
1917 mc
->hotplug_allowed
= pc_hotplug_allowed
;
1918 mc
->cpu_index_to_instance_props
= x86_cpu_index_to_props
;
1919 mc
->get_default_cpu_node_id
= x86_get_default_cpu_node_id
;
1920 mc
->possible_cpu_arch_ids
= x86_possible_cpu_arch_ids
;
1921 mc
->auto_enable_numa_with_memhp
= true;
1922 mc
->auto_enable_numa_with_memdev
= true;
1923 mc
->has_hotpluggable_cpus
= true;
1924 mc
->default_boot_order
= "cad";
1925 mc
->block_default_type
= IF_IDE
;
1927 mc
->reset
= pc_machine_reset
;
1928 mc
->wakeup
= pc_machine_wakeup
;
1929 hc
->pre_plug
= pc_machine_device_pre_plug_cb
;
1930 hc
->plug
= pc_machine_device_plug_cb
;
1931 hc
->unplug_request
= pc_machine_device_unplug_request_cb
;
1932 hc
->unplug
= pc_machine_device_unplug_cb
;
1933 mc
->default_cpu_type
= TARGET_DEFAULT_CPU_TYPE
;
1934 mc
->nvdimm_supported
= true;
1935 mc
->smp_props
.dies_supported
= true;
1936 mc
->default_ram_id
= "pc.ram";
1938 object_class_property_add(oc
, PC_MACHINE_MAX_RAM_BELOW_4G
, "size",
1939 pc_machine_get_max_ram_below_4g
, pc_machine_set_max_ram_below_4g
,
1941 object_class_property_set_description(oc
, PC_MACHINE_MAX_RAM_BELOW_4G
,
1942 "Maximum ram below the 4G boundary (32bit boundary)");
1944 object_class_property_add(oc
, PC_MACHINE_DEVMEM_REGION_SIZE
, "int",
1945 pc_machine_get_device_memory_region_size
, NULL
,
1948 object_class_property_add(oc
, PC_MACHINE_VMPORT
, "OnOffAuto",
1949 pc_machine_get_vmport
, pc_machine_set_vmport
,
1951 object_class_property_set_description(oc
, PC_MACHINE_VMPORT
,
1952 "Enable vmport (pc & q35)");
1954 object_class_property_add_bool(oc
, PC_MACHINE_SMBUS
,
1955 pc_machine_get_smbus
, pc_machine_set_smbus
);
1956 object_class_property_set_description(oc
, PC_MACHINE_SMBUS
,
1957 "Enable/disable system management bus");
1959 object_class_property_add_bool(oc
, PC_MACHINE_SATA
,
1960 pc_machine_get_sata
, pc_machine_set_sata
);
1961 object_class_property_set_description(oc
, PC_MACHINE_SATA
,
1962 "Enable/disable Serial ATA bus");
1964 object_class_property_add_bool(oc
, "hpet",
1965 pc_machine_get_hpet
, pc_machine_set_hpet
);
1966 object_class_property_set_description(oc
, "hpet",
1967 "Enable/disable high precision event timer emulation");
1969 object_class_property_add_bool(oc
, PC_MACHINE_I8042
,
1970 pc_machine_get_i8042
, pc_machine_set_i8042
);
1972 object_class_property_add_bool(oc
, "default-bus-bypass-iommu",
1973 pc_machine_get_default_bus_bypass_iommu
,
1974 pc_machine_set_default_bus_bypass_iommu
);
1976 object_class_property_add(oc
, PC_MACHINE_MAX_FW_SIZE
, "size",
1977 pc_machine_get_max_fw_size
, pc_machine_set_max_fw_size
,
1979 object_class_property_set_description(oc
, PC_MACHINE_MAX_FW_SIZE
,
1980 "Maximum combined firmware size");
1982 object_class_property_add(oc
, PC_MACHINE_SMBIOS_EP
, "str",
1983 pc_machine_get_smbios_ep
, pc_machine_set_smbios_ep
,
1985 object_class_property_set_description(oc
, PC_MACHINE_SMBIOS_EP
,
1986 "SMBIOS Entry Point type [32, 64]");
1989 static const TypeInfo pc_machine_info
= {
1990 .name
= TYPE_PC_MACHINE
,
1991 .parent
= TYPE_X86_MACHINE
,
1993 .instance_size
= sizeof(PCMachineState
),
1994 .instance_init
= pc_machine_initfn
,
1995 .class_size
= sizeof(PCMachineClass
),
1996 .class_init
= pc_machine_class_init
,
1997 .interfaces
= (InterfaceInfo
[]) {
1998 { TYPE_HOTPLUG_HANDLER
},
2003 static void pc_machine_register_types(void)
2005 type_register_static(&pc_machine_info
);
2008 type_init(pc_machine_register_types
)