1 /*
2 * ARM mach-virt emulation
3 *
4 * Copyright (c) 2013 Linaro Limited
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2 or later, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * Emulate a virtual board which works by passing Linux all the information
19 * it needs about what devices are present via the device tree.
20 * There are some restrictions about what we can do here:
21 * + we can only present devices whose Linux drivers will work based
22 * purely on the device tree with no platform data at all
23 * + we want to present a very stripped-down minimalist platform,
24 * both because this reduces the security attack surface from the guest
25 * and also because it reduces our exposure to being broken when
26 * the kernel updates its device tree bindings and requires further
27 * information in a device binding that we aren't providing.
28 * This is essentially the same approach kvmtool uses.
29 */
30
31 #include "qemu/osdep.h"
32 #include "qemu/datadir.h"
33 #include "qemu/units.h"
34 #include "qemu/option.h"
35 #include "monitor/qdev.h"
36 #include "hw/sysbus.h"
37 #include "hw/arm/boot.h"
38 #include "hw/arm/primecell.h"
39 #include "hw/arm/virt.h"
40 #include "hw/block/flash.h"
41 #include "hw/vfio/vfio-calxeda-xgmac.h"
42 #include "hw/vfio/vfio-amd-xgbe.h"
43 #include "hw/display/ramfb.h"
44 #include "net/net.h"
45 #include "sysemu/device_tree.h"
46 #include "sysemu/numa.h"
47 #include "sysemu/runstate.h"
48 #include "sysemu/tpm.h"
49 #include "sysemu/tcg.h"
50 #include "sysemu/kvm.h"
51 #include "sysemu/hvf.h"
52 #include "sysemu/qtest.h"
53 #include "hw/loader.h"
54 #include "qapi/error.h"
55 #include "qemu/bitops.h"
56 #include "qemu/error-report.h"
57 #include "qemu/module.h"
58 #include "hw/pci-host/gpex.h"
59 #include "hw/virtio/virtio-pci.h"
60 #include "hw/core/sysbus-fdt.h"
61 #include "hw/platform-bus.h"
62 #include "hw/qdev-properties.h"
63 #include "hw/arm/fdt.h"
64 #include "hw/intc/arm_gic.h"
65 #include "hw/intc/arm_gicv3_common.h"
66 #include "hw/intc/arm_gicv3_its_common.h"
67 #include "hw/irq.h"
68 #include "kvm_arm.h"
69 #include "hvf_arm.h"
70 #include "hw/firmware/smbios.h"
71 #include "qapi/visitor.h"
72 #include "qapi/qapi-visit-common.h"
73 #include "qapi/qmp/qlist.h"
74 #include "standard-headers/linux/input.h"
75 #include "hw/arm/smmuv3.h"
76 #include "hw/acpi/acpi.h"
77 #include "target/arm/cpu-qom.h"
78 #include "target/arm/internals.h"
79 #include "target/arm/multiprocessing.h"
80 #include "target/arm/gtimer.h"
81 #include "hw/mem/pc-dimm.h"
82 #include "hw/mem/nvdimm.h"
83 #include "hw/acpi/generic_event_device.h"
84 #include "hw/virtio/virtio-md-pci.h"
85 #include "hw/virtio/virtio-iommu.h"
86 #include "hw/char/pl011.h"
87 #include "qemu/guest-random.h"
88
89 static GlobalProperty arm_virt_compat[] = {
90 { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "48" },
91 };
92 static const size_t arm_virt_compat_len = G_N_ELEMENTS(arm_virt_compat);
93
94 /*
95 * This cannot be called from the virt_machine_class_init() because
96 * TYPE_VIRT_MACHINE is abstract and mc->compat_props g_ptr_array_new()
97 * only is called on virt non abstract class init.
98 */
arm_virt_compat_set(MachineClass * mc)99 static void arm_virt_compat_set(MachineClass *mc)
100 {
101 compat_props_add(mc->compat_props, arm_virt_compat,
102 arm_virt_compat_len);
103 }
104
105 #define DEFINE_VIRT_MACHINE_IMPL(latest, ...) \
106 static void MACHINE_VER_SYM(class_init, virt, __VA_ARGS__)( \
107 ObjectClass *oc, \
108 void *data) \
109 { \
110 MachineClass *mc = MACHINE_CLASS(oc); \
111 arm_virt_compat_set(mc); \
112 MACHINE_VER_SYM(options, virt, __VA_ARGS__)(mc); \
113 mc->desc = "QEMU " MACHINE_VER_STR(__VA_ARGS__) " ARM Virtual Machine"; \
114 MACHINE_VER_DEPRECATION(__VA_ARGS__); \
115 if (latest) { \
116 mc->alias = "virt"; \
117 } \
118 } \
119 static const TypeInfo MACHINE_VER_SYM(info, virt, __VA_ARGS__) = \
120 { \
121 .name = MACHINE_VER_TYPE_NAME("virt", __VA_ARGS__), \
122 .parent = TYPE_VIRT_MACHINE, \
123 .class_init = MACHINE_VER_SYM(class_init, virt, __VA_ARGS__), \
124 }; \
125 static void MACHINE_VER_SYM(register, virt, __VA_ARGS__)(void) \
126 { \
127 MACHINE_VER_DELETION(__VA_ARGS__); \
128 type_register_static(&MACHINE_VER_SYM(info, virt, __VA_ARGS__)); \
129 } \
130 type_init(MACHINE_VER_SYM(register, virt, __VA_ARGS__));
131
132 #define DEFINE_VIRT_MACHINE_AS_LATEST(major, minor) \
133 DEFINE_VIRT_MACHINE_IMPL(true, major, minor)
134 #define DEFINE_VIRT_MACHINE(major, minor) \
135 DEFINE_VIRT_MACHINE_IMPL(false, major, minor)
136
137
138 /* Number of external interrupt lines to configure the GIC with */
139 #define NUM_IRQS 256
140
141 #define PLATFORM_BUS_NUM_IRQS 64
142
143 /* Legacy RAM limit in GB (< version 4.0) */
144 #define LEGACY_RAMLIMIT_GB 255
145 #define LEGACY_RAMLIMIT_BYTES (LEGACY_RAMLIMIT_GB * GiB)
146
147 /* Addresses and sizes of our components.
148 * 0..128MB is space for a flash device so we can run bootrom code such as UEFI.
149 * 128MB..256MB is used for miscellaneous device I/O.
150 * 256MB..1GB is reserved for possible future PCI support (ie where the
151 * PCI memory window will go if we add a PCI host controller).
152 * 1GB and up is RAM (which may happily spill over into the
153 * high memory region beyond 4GB).
154 * This represents a compromise between how much RAM can be given to
155 * a 32 bit VM and leaving space for expansion and in particular for PCI.
156 * Note that devices should generally be placed at multiples of 0x10000,
157 * to accommodate guests using 64K pages.
158 */
159 static const MemMapEntry base_memmap[] = {
160 /* Space up to 0x8000000 is reserved for a boot ROM */
161 [VIRT_FLASH] = { 0, 0x08000000 },
162 [VIRT_CPUPERIPHS] = { 0x08000000, 0x00020000 },
163 /* GIC distributor and CPU interfaces sit inside the CPU peripheral space */
164 [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 },
165 [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 },
166 [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 },
167 [VIRT_GIC_HYP] = { 0x08030000, 0x00010000 },
168 [VIRT_GIC_VCPU] = { 0x08040000, 0x00010000 },
169 /* The space in between here is reserved for GICv3 CPU/vCPU/HYP */
170 [VIRT_GIC_ITS] = { 0x08080000, 0x00020000 },
171 /* This redistributor space allows up to 2*64kB*123 CPUs */
172 [VIRT_GIC_REDIST] = { 0x080A0000, 0x00F60000 },
173 [VIRT_UART0] = { 0x09000000, 0x00001000 },
174 [VIRT_RTC] = { 0x09010000, 0x00001000 },
175 [VIRT_FW_CFG] = { 0x09020000, 0x00000018 },
176 [VIRT_GPIO] = { 0x09030000, 0x00001000 },
177 [VIRT_UART1] = { 0x09040000, 0x00001000 },
178 [VIRT_SMMU] = { 0x09050000, 0x00020000 },
179 [VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN },
180 [VIRT_ACPI_GED] = { 0x09080000, ACPI_GED_EVT_SEL_LEN },
181 [VIRT_NVDIMM_ACPI] = { 0x09090000, NVDIMM_ACPI_IO_LEN},
182 [VIRT_PVTIME] = { 0x090a0000, 0x00010000 },
183 [VIRT_SECURE_GPIO] = { 0x090b0000, 0x00001000 },
184 [VIRT_MMIO] = { 0x0a000000, 0x00000200 },
185 /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
186 [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
187 [VIRT_SECURE_MEM] = { 0x0e000000, 0x01000000 },
188 [VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 },
189 [VIRT_PCIE_PIO] = { 0x3eff0000, 0x00010000 },
190 [VIRT_PCIE_ECAM] = { 0x3f000000, 0x01000000 },
191 /* Actual RAM size depends on initial RAM and device memory settings */
192 [VIRT_MEM] = { GiB, LEGACY_RAMLIMIT_BYTES },
193 };
194
195 /*
196 * Highmem IO Regions: This memory map is floating, located after the RAM.
197 * Each MemMapEntry base (GPA) will be dynamically computed, depending on the
198 * top of the RAM, so that its base get the same alignment as the size,
199 * ie. a 512GiB entry will be aligned on a 512GiB boundary. If there is
200 * less than 256GiB of RAM, the floating area starts at the 256GiB mark.
201 * Note the extended_memmap is sized so that it eventually also includes the
202 * base_memmap entries (VIRT_HIGH_GIC_REDIST2 index is greater than the last
203 * index of base_memmap).
204 *
205 * The memory map for these Highmem IO Regions can be in legacy or compact
206 * layout, depending on 'compact-highmem' property. With legacy layout, the
207 * PA space for one specific region is always reserved, even if the region
208 * has been disabled or doesn't fit into the PA space. However, the PA space
209 * for the region won't be reserved in these circumstances with compact layout.
210 */
211 static MemMapEntry extended_memmap[] = {
212 /* Additional 64 MB redist region (can contain up to 512 redistributors) */
213 [VIRT_HIGH_GIC_REDIST2] = { 0x0, 64 * MiB },
214 [VIRT_HIGH_PCIE_ECAM] = { 0x0, 256 * MiB },
215 /* Second PCIe window */
216 [VIRT_HIGH_PCIE_MMIO] = { 0x0, 512 * GiB },
217 };
218
219 static const int a15irqmap[] = {
220 [VIRT_UART0] = 1,
221 [VIRT_RTC] = 2,
222 [VIRT_PCIE] = 3, /* ... to 6 */
223 [VIRT_GPIO] = 7,
224 [VIRT_UART1] = 8,
225 [VIRT_ACPI_GED] = 9,
226 [VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
227 [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
228 [VIRT_SMMU] = 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */
229 [VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */
230 };
231
create_randomness(MachineState * ms,const char * node)232 static void create_randomness(MachineState *ms, const char *node)
233 {
234 struct {
235 uint64_t kaslr;
236 uint8_t rng[32];
237 } seed;
238
239 if (qemu_guest_getrandom(&seed, sizeof(seed), NULL)) {
240 return;
241 }
242 qemu_fdt_setprop_u64(ms->fdt, node, "kaslr-seed", seed.kaslr);
243 qemu_fdt_setprop(ms->fdt, node, "rng-seed", seed.rng, sizeof(seed.rng));
244 }
245
246 /*
247 * The CPU object always exposes the NS EL2 virt timer IRQ line,
248 * but we don't want to advertise it to the guest in the dtb or ACPI
249 * table unless it's really going to do something.
250 */
ns_el2_virt_timer_present(void)251 static bool ns_el2_virt_timer_present(void)
252 {
253 ARMCPU *cpu = ARM_CPU(qemu_get_cpu(0));
254 CPUARMState *env = &cpu->env;
255
256 return arm_feature(env, ARM_FEATURE_AARCH64) &&
257 arm_feature(env, ARM_FEATURE_EL2) && cpu_isar_feature(aa64_vh, cpu);
258 }
259
create_fdt(VirtMachineState * vms)260 static void create_fdt(VirtMachineState *vms)
261 {
262 MachineState *ms = MACHINE(vms);
263 int nb_numa_nodes = ms->numa_state->num_nodes;
264 void *fdt = create_device_tree(&vms->fdt_size);
265
266 if (!fdt) {
267 error_report("create_device_tree() failed");
268 exit(1);
269 }
270
271 ms->fdt = fdt;
272
273 /* Header */
274 qemu_fdt_setprop_string(fdt, "/", "compatible", "linux,dummy-virt");
275 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
276 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
277 qemu_fdt_setprop_string(fdt, "/", "model", "linux,dummy-virt");
278
279 /*
280 * For QEMU, all DMA is coherent. Advertising this in the root node
281 * has two benefits:
282 *
283 * - It avoids potential bugs where we forget to mark a DMA
284 * capable device as being dma-coherent
285 * - It avoids spurious warnings from the Linux kernel about
286 * devices which can't do DMA at all
287 */
288 qemu_fdt_setprop(fdt, "/", "dma-coherent", NULL, 0);
289
290 /* /chosen must exist for load_dtb to fill in necessary properties later */
291 qemu_fdt_add_subnode(fdt, "/chosen");
292 if (vms->dtb_randomness) {
293 create_randomness(ms, "/chosen");
294 }
295
296 if (vms->secure) {
297 qemu_fdt_add_subnode(fdt, "/secure-chosen");
298 if (vms->dtb_randomness) {
299 create_randomness(ms, "/secure-chosen");
300 }
301 }
302
303 qemu_fdt_add_subnode(fdt, "/aliases");
304
305 /* Clock node, for the benefit of the UART. The kernel device tree
306 * binding documentation claims the PL011 node clock properties are
307 * optional but in practice if you omit them the kernel refuses to
308 * probe for the device.
309 */
310 vms->clock_phandle = qemu_fdt_alloc_phandle(fdt);
311 qemu_fdt_add_subnode(fdt, "/apb-pclk");
312 qemu_fdt_setprop_string(fdt, "/apb-pclk", "compatible", "fixed-clock");
313 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "#clock-cells", 0x0);
314 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "clock-frequency", 24000000);
315 qemu_fdt_setprop_string(fdt, "/apb-pclk", "clock-output-names",
316 "clk24mhz");
317 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "phandle", vms->clock_phandle);
318
319 if (nb_numa_nodes > 0 && ms->numa_state->have_numa_distance) {
320 int size = nb_numa_nodes * nb_numa_nodes * 3 * sizeof(uint32_t);
321 uint32_t *matrix = g_malloc0(size);
322 int idx, i, j;
323
324 for (i = 0; i < nb_numa_nodes; i++) {
325 for (j = 0; j < nb_numa_nodes; j++) {
326 idx = (i * nb_numa_nodes + j) * 3;
327 matrix[idx + 0] = cpu_to_be32(i);
328 matrix[idx + 1] = cpu_to_be32(j);
329 matrix[idx + 2] =
330 cpu_to_be32(ms->numa_state->nodes[i].distance[j]);
331 }
332 }
333
334 qemu_fdt_add_subnode(fdt, "/distance-map");
335 qemu_fdt_setprop_string(fdt, "/distance-map", "compatible",
336 "numa-distance-map-v1");
337 qemu_fdt_setprop(fdt, "/distance-map", "distance-matrix",
338 matrix, size);
339 g_free(matrix);
340 }
341 }
342
fdt_add_timer_nodes(const VirtMachineState * vms)343 static void fdt_add_timer_nodes(const VirtMachineState *vms)
344 {
345 /* On real hardware these interrupts are level-triggered.
346 * On KVM they were edge-triggered before host kernel version 4.4,
347 * and level-triggered afterwards.
348 * On emulated QEMU they are level-triggered.
349 *
350 * Getting the DTB info about them wrong is awkward for some
351 * guest kernels:
352 * pre-4.8 ignore the DT and leave the interrupt configured
353 * with whatever the GIC reset value (or the bootloader) left it at
354 * 4.8 before rc6 honour the incorrect data by programming it back
355 * into the GIC, causing problems
356 * 4.8rc6 and later ignore the DT and always write "level triggered"
357 * into the GIC
358 *
359 * For backwards-compatibility, virt-2.8 and earlier will continue
360 * to say these are edge-triggered, but later machines will report
361 * the correct information.
362 */
363 ARMCPU *armcpu;
364 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
365 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI;
366 MachineState *ms = MACHINE(vms);
367
368 if (vmc->claim_edge_triggered_timers) {
369 irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI;
370 }
371
372 if (vms->gic_version == VIRT_GIC_VERSION_2) {
373 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
374 GIC_FDT_IRQ_PPI_CPU_WIDTH,
375 (1 << MACHINE(vms)->smp.cpus) - 1);
376 }
377
378 qemu_fdt_add_subnode(ms->fdt, "/timer");
379
380 armcpu = ARM_CPU(qemu_get_cpu(0));
381 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) {
382 const char compat[] = "arm,armv8-timer\0arm,armv7-timer";
383 qemu_fdt_setprop(ms->fdt, "/timer", "compatible",
384 compat, sizeof(compat));
385 } else {
386 qemu_fdt_setprop_string(ms->fdt, "/timer", "compatible",
387 "arm,armv7-timer");
388 }
389 qemu_fdt_setprop(ms->fdt, "/timer", "always-on", NULL, 0);
390 if (vms->ns_el2_virt_timer_irq) {
391 qemu_fdt_setprop_cells(ms->fdt, "/timer", "interrupts",
392 GIC_FDT_IRQ_TYPE_PPI,
393 INTID_TO_PPI(ARCH_TIMER_S_EL1_IRQ), irqflags,
394 GIC_FDT_IRQ_TYPE_PPI,
395 INTID_TO_PPI(ARCH_TIMER_NS_EL1_IRQ), irqflags,
396 GIC_FDT_IRQ_TYPE_PPI,
397 INTID_TO_PPI(ARCH_TIMER_VIRT_IRQ), irqflags,
398 GIC_FDT_IRQ_TYPE_PPI,
399 INTID_TO_PPI(ARCH_TIMER_NS_EL2_IRQ), irqflags,
400 GIC_FDT_IRQ_TYPE_PPI,
401 INTID_TO_PPI(ARCH_TIMER_NS_EL2_VIRT_IRQ), irqflags);
402 } else {
403 qemu_fdt_setprop_cells(ms->fdt, "/timer", "interrupts",
404 GIC_FDT_IRQ_TYPE_PPI,
405 INTID_TO_PPI(ARCH_TIMER_S_EL1_IRQ), irqflags,
406 GIC_FDT_IRQ_TYPE_PPI,
407 INTID_TO_PPI(ARCH_TIMER_NS_EL1_IRQ), irqflags,
408 GIC_FDT_IRQ_TYPE_PPI,
409 INTID_TO_PPI(ARCH_TIMER_VIRT_IRQ), irqflags,
410 GIC_FDT_IRQ_TYPE_PPI,
411 INTID_TO_PPI(ARCH_TIMER_NS_EL2_IRQ), irqflags);
412 }
413 }
414
fdt_add_cpu_nodes(const VirtMachineState * vms)415 static void fdt_add_cpu_nodes(const VirtMachineState *vms)
416 {
417 int cpu;
418 int addr_cells = 1;
419 const MachineState *ms = MACHINE(vms);
420 const VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
421 int smp_cpus = ms->smp.cpus;
422
423 /*
424 * See Linux Documentation/devicetree/bindings/arm/cpus.yaml
425 * On ARM v8 64-bit systems value should be set to 2,
426 * that corresponds to the MPIDR_EL1 register size.
427 * If MPIDR_EL1[63:32] value is equal to 0 on all CPUs
428 * in the system, #address-cells can be set to 1, since
429 * MPIDR_EL1[63:32] bits are not used for CPUs
430 * identification.
431 *
432 * Here we actually don't know whether our system is 32- or 64-bit one.
433 * The simplest way to go is to examine affinity IDs of all our CPUs. If
434 * at least one of them has Aff3 populated, we set #address-cells to 2.
435 */
436 for (cpu = 0; cpu < smp_cpus; cpu++) {
437 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
438
439 if (arm_cpu_mp_affinity(armcpu) & ARM_AFF3_MASK) {
440 addr_cells = 2;
441 break;
442 }
443 }
444
445 qemu_fdt_add_subnode(ms->fdt, "/cpus");
446 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", addr_cells);
447 qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0);
448
449 for (cpu = smp_cpus - 1; cpu >= 0; cpu--) {
450 char *nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
451 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
452 CPUState *cs = CPU(armcpu);
453
454 qemu_fdt_add_subnode(ms->fdt, nodename);
455 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu");
456 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
457 armcpu->dtb_compatible);
458
459 if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED && smp_cpus > 1) {
460 qemu_fdt_setprop_string(ms->fdt, nodename,
461 "enable-method", "psci");
462 }
463
464 if (addr_cells == 2) {
465 qemu_fdt_setprop_u64(ms->fdt, nodename, "reg",
466 arm_cpu_mp_affinity(armcpu));
467 } else {
468 qemu_fdt_setprop_cell(ms->fdt, nodename, "reg",
469 arm_cpu_mp_affinity(armcpu));
470 }
471
472 if (ms->possible_cpus->cpus[cs->cpu_index].props.has_node_id) {
473 qemu_fdt_setprop_cell(ms->fdt, nodename, "numa-node-id",
474 ms->possible_cpus->cpus[cs->cpu_index].props.node_id);
475 }
476
477 if (!vmc->no_cpu_topology) {
478 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle",
479 qemu_fdt_alloc_phandle(ms->fdt));
480 }
481
482 g_free(nodename);
483 }
484
485 if (!vmc->no_cpu_topology) {
486 /*
487 * Add vCPU topology description through fdt node cpu-map.
488 *
489 * See Linux Documentation/devicetree/bindings/cpu/cpu-topology.txt
490 * In a SMP system, the hierarchy of CPUs can be defined through
491 * four entities that are used to describe the layout of CPUs in
492 * the system: socket/cluster/core/thread.
493 *
494 * A socket node represents the boundary of system physical package
495 * and its child nodes must be one or more cluster nodes. A system
496 * can contain several layers of clustering within a single physical
497 * package and cluster nodes can be contained in parent cluster nodes.
498 *
499 * Note: currently we only support one layer of clustering within
500 * each physical package.
501 */
502 qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map");
503
504 for (cpu = smp_cpus - 1; cpu >= 0; cpu--) {
505 char *cpu_path = g_strdup_printf("/cpus/cpu@%d", cpu);
506 char *map_path;
507
508 if (ms->smp.threads > 1) {
509 map_path = g_strdup_printf(
510 "/cpus/cpu-map/socket%d/cluster%d/core%d/thread%d",
511 cpu / (ms->smp.clusters * ms->smp.cores * ms->smp.threads),
512 (cpu / (ms->smp.cores * ms->smp.threads)) % ms->smp.clusters,
513 (cpu / ms->smp.threads) % ms->smp.cores,
514 cpu % ms->smp.threads);
515 } else {
516 map_path = g_strdup_printf(
517 "/cpus/cpu-map/socket%d/cluster%d/core%d",
518 cpu / (ms->smp.clusters * ms->smp.cores),
519 (cpu / ms->smp.cores) % ms->smp.clusters,
520 cpu % ms->smp.cores);
521 }
522 qemu_fdt_add_path(ms->fdt, map_path);
523 qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path);
524
525 g_free(map_path);
526 g_free(cpu_path);
527 }
528 }
529 }
530
fdt_add_its_gic_node(VirtMachineState * vms)531 static void fdt_add_its_gic_node(VirtMachineState *vms)
532 {
533 char *nodename;
534 MachineState *ms = MACHINE(vms);
535
536 vms->msi_phandle = qemu_fdt_alloc_phandle(ms->fdt);
537 nodename = g_strdup_printf("/intc/its@%" PRIx64,
538 vms->memmap[VIRT_GIC_ITS].base);
539 qemu_fdt_add_subnode(ms->fdt, nodename);
540 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
541 "arm,gic-v3-its");
542 qemu_fdt_setprop(ms->fdt, nodename, "msi-controller", NULL, 0);
543 qemu_fdt_setprop_cell(ms->fdt, nodename, "#msi-cells", 1);
544 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
545 2, vms->memmap[VIRT_GIC_ITS].base,
546 2, vms->memmap[VIRT_GIC_ITS].size);
547 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", vms->msi_phandle);
548 g_free(nodename);
549 }
550
fdt_add_v2m_gic_node(VirtMachineState * vms)551 static void fdt_add_v2m_gic_node(VirtMachineState *vms)
552 {
553 MachineState *ms = MACHINE(vms);
554 char *nodename;
555
556 nodename = g_strdup_printf("/intc/v2m@%" PRIx64,
557 vms->memmap[VIRT_GIC_V2M].base);
558 vms->msi_phandle = qemu_fdt_alloc_phandle(ms->fdt);
559 qemu_fdt_add_subnode(ms->fdt, nodename);
560 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
561 "arm,gic-v2m-frame");
562 qemu_fdt_setprop(ms->fdt, nodename, "msi-controller", NULL, 0);
563 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
564 2, vms->memmap[VIRT_GIC_V2M].base,
565 2, vms->memmap[VIRT_GIC_V2M].size);
566 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", vms->msi_phandle);
567 g_free(nodename);
568 }
569
fdt_add_gic_node(VirtMachineState * vms)570 static void fdt_add_gic_node(VirtMachineState *vms)
571 {
572 MachineState *ms = MACHINE(vms);
573 char *nodename;
574
575 vms->gic_phandle = qemu_fdt_alloc_phandle(ms->fdt);
576 qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", vms->gic_phandle);
577
578 nodename = g_strdup_printf("/intc@%" PRIx64,
579 vms->memmap[VIRT_GIC_DIST].base);
580 qemu_fdt_add_subnode(ms->fdt, nodename);
581 qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3);
582 qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
583 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2);
584 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2);
585 qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0);
586 if (vms->gic_version != VIRT_GIC_VERSION_2) {
587 int nb_redist_regions = virt_gicv3_redist_region_count(vms);
588
589 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
590 "arm,gic-v3");
591
592 qemu_fdt_setprop_cell(ms->fdt, nodename,
593 "#redistributor-regions", nb_redist_regions);
594
595 if (nb_redist_regions == 1) {
596 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
597 2, vms->memmap[VIRT_GIC_DIST].base,
598 2, vms->memmap[VIRT_GIC_DIST].size,
599 2, vms->memmap[VIRT_GIC_REDIST].base,
600 2, vms->memmap[VIRT_GIC_REDIST].size);
601 } else {
602 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
603 2, vms->memmap[VIRT_GIC_DIST].base,
604 2, vms->memmap[VIRT_GIC_DIST].size,
605 2, vms->memmap[VIRT_GIC_REDIST].base,
606 2, vms->memmap[VIRT_GIC_REDIST].size,
607 2, vms->memmap[VIRT_HIGH_GIC_REDIST2].base,
608 2, vms->memmap[VIRT_HIGH_GIC_REDIST2].size);
609 }
610
611 if (vms->virt) {
612 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
613 GIC_FDT_IRQ_TYPE_PPI,
614 INTID_TO_PPI(ARCH_GIC_MAINT_IRQ),
615 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
616 }
617 } else {
618 /* 'cortex-a15-gic' means 'GIC v2' */
619 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
620 "arm,cortex-a15-gic");
621 if (!vms->virt) {
622 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
623 2, vms->memmap[VIRT_GIC_DIST].base,
624 2, vms->memmap[VIRT_GIC_DIST].size,
625 2, vms->memmap[VIRT_GIC_CPU].base,
626 2, vms->memmap[VIRT_GIC_CPU].size);
627 } else {
628 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
629 2, vms->memmap[VIRT_GIC_DIST].base,
630 2, vms->memmap[VIRT_GIC_DIST].size,
631 2, vms->memmap[VIRT_GIC_CPU].base,
632 2, vms->memmap[VIRT_GIC_CPU].size,
633 2, vms->memmap[VIRT_GIC_HYP].base,
634 2, vms->memmap[VIRT_GIC_HYP].size,
635 2, vms->memmap[VIRT_GIC_VCPU].base,
636 2, vms->memmap[VIRT_GIC_VCPU].size);
637 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
638 GIC_FDT_IRQ_TYPE_PPI,
639 INTID_TO_PPI(ARCH_GIC_MAINT_IRQ),
640 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
641 }
642 }
643
644 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", vms->gic_phandle);
645 g_free(nodename);
646 }
647
fdt_add_pmu_nodes(const VirtMachineState * vms)648 static void fdt_add_pmu_nodes(const VirtMachineState *vms)
649 {
650 ARMCPU *armcpu = ARM_CPU(first_cpu);
651 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI;
652 MachineState *ms = MACHINE(vms);
653
654 if (!arm_feature(&armcpu->env, ARM_FEATURE_PMU)) {
655 assert(!object_property_get_bool(OBJECT(armcpu), "pmu", NULL));
656 return;
657 }
658
659 if (vms->gic_version == VIRT_GIC_VERSION_2) {
660 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
661 GIC_FDT_IRQ_PPI_CPU_WIDTH,
662 (1 << MACHINE(vms)->smp.cpus) - 1);
663 }
664
665 qemu_fdt_add_subnode(ms->fdt, "/pmu");
666 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) {
667 const char compat[] = "arm,armv8-pmuv3";
668 qemu_fdt_setprop(ms->fdt, "/pmu", "compatible",
669 compat, sizeof(compat));
670 qemu_fdt_setprop_cells(ms->fdt, "/pmu", "interrupts",
671 GIC_FDT_IRQ_TYPE_PPI,
672 INTID_TO_PPI(VIRTUAL_PMU_IRQ), irqflags);
673 }
674 }
675
create_acpi_ged(VirtMachineState * vms)676 static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
677 {
678 DeviceState *dev;
679 MachineState *ms = MACHINE(vms);
680 int irq = vms->irqmap[VIRT_ACPI_GED];
681 uint32_t event = ACPI_GED_PWR_DOWN_EVT;
682
683 if (ms->ram_slots) {
684 event |= ACPI_GED_MEM_HOTPLUG_EVT;
685 }
686
687 if (ms->nvdimms_state->is_enabled) {
688 event |= ACPI_GED_NVDIMM_HOTPLUG_EVT;
689 }
690
691 dev = qdev_new(TYPE_ACPI_GED);
692 qdev_prop_set_uint32(dev, "ged-event", event);
693 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
694
695 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_ACPI_GED].base);
696 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, vms->memmap[VIRT_PCDIMM_ACPI].base);
697 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(vms->gic, irq));
698
699 return dev;
700 }
701
create_its(VirtMachineState * vms)702 static void create_its(VirtMachineState *vms)
703 {
704 const char *itsclass = its_class_name();
705 DeviceState *dev;
706
707 if (!strcmp(itsclass, "arm-gicv3-its")) {
708 if (!vms->tcg_its) {
709 itsclass = NULL;
710 }
711 }
712
713 if (!itsclass) {
714 /* Do nothing if not supported */
715 return;
716 }
717
718 dev = qdev_new(itsclass);
719
720 object_property_set_link(OBJECT(dev), "parent-gicv3", OBJECT(vms->gic),
721 &error_abort);
722 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
723 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_GIC_ITS].base);
724
725 fdt_add_its_gic_node(vms);
726 vms->msi_controller = VIRT_MSI_CTRL_ITS;
727 }
728
create_v2m(VirtMachineState * vms)729 static void create_v2m(VirtMachineState *vms)
730 {
731 int i;
732 int irq = vms->irqmap[VIRT_GIC_V2M];
733 DeviceState *dev;
734
735 dev = qdev_new("arm-gicv2m");
736 qdev_prop_set_uint32(dev, "base-spi", irq);
737 qdev_prop_set_uint32(dev, "num-spi", NUM_GICV2M_SPIS);
738 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
739 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_GIC_V2M].base);
740
741 for (i = 0; i < NUM_GICV2M_SPIS; i++) {
742 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
743 qdev_get_gpio_in(vms->gic, irq + i));
744 }
745
746 fdt_add_v2m_gic_node(vms);
747 vms->msi_controller = VIRT_MSI_CTRL_GICV2M;
748 }
749
750 /*
751 * If the CPU has FEAT_NMI, then turn on the NMI support in the GICv3 too.
752 * It's permitted to have a configuration with NMI in the CPU (and thus the
753 * GICv3 CPU interface) but not in the distributor/redistributors, but it's
754 * not very useful.
755 */
gicv3_nmi_present(VirtMachineState * vms)756 static bool gicv3_nmi_present(VirtMachineState *vms)
757 {
758 ARMCPU *cpu = ARM_CPU(qemu_get_cpu(0));
759
760 return tcg_enabled() && cpu_isar_feature(aa64_nmi, cpu) &&
761 (vms->gic_version != VIRT_GIC_VERSION_2);
762 }
763
create_gic(VirtMachineState * vms,MemoryRegion * mem)764 static void create_gic(VirtMachineState *vms, MemoryRegion *mem)
765 {
766 MachineState *ms = MACHINE(vms);
767 /* We create a standalone GIC */
768 SysBusDevice *gicbusdev;
769 const char *gictype;
770 int i;
771 unsigned int smp_cpus = ms->smp.cpus;
772 uint32_t nb_redist_regions = 0;
773 int revision;
774
775 if (vms->gic_version == VIRT_GIC_VERSION_2) {
776 gictype = gic_class_name();
777 } else {
778 gictype = gicv3_class_name();
779 }
780
781 switch (vms->gic_version) {
782 case VIRT_GIC_VERSION_2:
783 revision = 2;
784 break;
785 case VIRT_GIC_VERSION_3:
786 revision = 3;
787 break;
788 case VIRT_GIC_VERSION_4:
789 revision = 4;
790 break;
791 default:
792 g_assert_not_reached();
793 }
794 vms->gic = qdev_new(gictype);
795 qdev_prop_set_uint32(vms->gic, "revision", revision);
796 qdev_prop_set_uint32(vms->gic, "num-cpu", smp_cpus);
797 /* Note that the num-irq property counts both internal and external
798 * interrupts; there are always 32 of the former (mandated by GIC spec).
799 */
800 qdev_prop_set_uint32(vms->gic, "num-irq", NUM_IRQS + 32);
801 if (!kvm_irqchip_in_kernel()) {
802 qdev_prop_set_bit(vms->gic, "has-security-extensions", vms->secure);
803 }
804
805 if (vms->gic_version != VIRT_GIC_VERSION_2) {
806 QList *redist_region_count;
807 uint32_t redist0_capacity = virt_redist_capacity(vms, VIRT_GIC_REDIST);
808 uint32_t redist0_count = MIN(smp_cpus, redist0_capacity);
809
810 nb_redist_regions = virt_gicv3_redist_region_count(vms);
811
812 redist_region_count = qlist_new();
813 qlist_append_int(redist_region_count, redist0_count);
814 if (nb_redist_regions == 2) {
815 uint32_t redist1_capacity =
816 virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2);
817
818 qlist_append_int(redist_region_count,
819 MIN(smp_cpus - redist0_count, redist1_capacity));
820 }
821 qdev_prop_set_array(vms->gic, "redist-region-count",
822 redist_region_count);
823
824 if (!kvm_irqchip_in_kernel()) {
825 if (vms->tcg_its) {
826 object_property_set_link(OBJECT(vms->gic), "sysmem",
827 OBJECT(mem), &error_fatal);
828 qdev_prop_set_bit(vms->gic, "has-lpi", true);
829 }
830 }
831 } else {
832 if (!kvm_irqchip_in_kernel()) {
833 qdev_prop_set_bit(vms->gic, "has-virtualization-extensions",
834 vms->virt);
835 }
836 }
837
838 if (gicv3_nmi_present(vms)) {
839 qdev_prop_set_bit(vms->gic, "has-nmi", true);
840 }
841
842 gicbusdev = SYS_BUS_DEVICE(vms->gic);
843 sysbus_realize_and_unref(gicbusdev, &error_fatal);
844 sysbus_mmio_map(gicbusdev, 0, vms->memmap[VIRT_GIC_DIST].base);
845 if (vms->gic_version != VIRT_GIC_VERSION_2) {
846 sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_REDIST].base);
847 if (nb_redist_regions == 2) {
848 sysbus_mmio_map(gicbusdev, 2,
849 vms->memmap[VIRT_HIGH_GIC_REDIST2].base);
850 }
851 } else {
852 sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_CPU].base);
853 if (vms->virt) {
854 sysbus_mmio_map(gicbusdev, 2, vms->memmap[VIRT_GIC_HYP].base);
855 sysbus_mmio_map(gicbusdev, 3, vms->memmap[VIRT_GIC_VCPU].base);
856 }
857 }
858
859 /* Wire the outputs from each CPU's generic timer and the GICv3
860 * maintenance interrupt signal to the appropriate GIC PPI inputs,
861 * and the GIC's IRQ/FIQ/VIRQ/VFIQ/NMI/VINMI interrupt outputs to the
862 * CPU's inputs.
863 */
864 for (i = 0; i < smp_cpus; i++) {
865 DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
866 int intidbase = NUM_IRQS + i * GIC_INTERNAL;
867 /* Mapping from the output timer irq lines from the CPU to the
868 * GIC PPI inputs we use for the virt board.
869 */
870 const int timer_irq[] = {
871 [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ,
872 [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ,
873 [GTIMER_HYP] = ARCH_TIMER_NS_EL2_IRQ,
874 [GTIMER_SEC] = ARCH_TIMER_S_EL1_IRQ,
875 [GTIMER_HYPVIRT] = ARCH_TIMER_NS_EL2_VIRT_IRQ,
876 };
877
878 for (unsigned irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
879 qdev_connect_gpio_out(cpudev, irq,
880 qdev_get_gpio_in(vms->gic,
881 intidbase + timer_irq[irq]));
882 }
883
884 if (vms->gic_version != VIRT_GIC_VERSION_2) {
885 qemu_irq irq = qdev_get_gpio_in(vms->gic,
886 intidbase + ARCH_GIC_MAINT_IRQ);
887 qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt",
888 0, irq);
889 } else if (vms->virt) {
890 qemu_irq irq = qdev_get_gpio_in(vms->gic,
891 intidbase + ARCH_GIC_MAINT_IRQ);
892 sysbus_connect_irq(gicbusdev, i + 4 * smp_cpus, irq);
893 }
894
895 qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0,
896 qdev_get_gpio_in(vms->gic, intidbase
897 + VIRTUAL_PMU_IRQ));
898
899 sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
900 sysbus_connect_irq(gicbusdev, i + smp_cpus,
901 qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
902 sysbus_connect_irq(gicbusdev, i + 2 * smp_cpus,
903 qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ));
904 sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus,
905 qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
906
907 if (vms->gic_version != VIRT_GIC_VERSION_2) {
908 sysbus_connect_irq(gicbusdev, i + 4 * smp_cpus,
909 qdev_get_gpio_in(cpudev, ARM_CPU_NMI));
910 sysbus_connect_irq(gicbusdev, i + 5 * smp_cpus,
911 qdev_get_gpio_in(cpudev, ARM_CPU_VINMI));
912 }
913 }
914
915 fdt_add_gic_node(vms);
916
917 if (vms->gic_version != VIRT_GIC_VERSION_2 && vms->its) {
918 create_its(vms);
919 } else if (vms->gic_version == VIRT_GIC_VERSION_2) {
920 create_v2m(vms);
921 }
922 }
923
create_uart(const VirtMachineState * vms,int uart,MemoryRegion * mem,Chardev * chr,bool secure)924 static void create_uart(const VirtMachineState *vms, int uart,
925 MemoryRegion *mem, Chardev *chr, bool secure)
926 {
927 char *nodename;
928 hwaddr base = vms->memmap[uart].base;
929 hwaddr size = vms->memmap[uart].size;
930 int irq = vms->irqmap[uart];
931 const char compat[] = "arm,pl011\0arm,primecell";
932 const char clocknames[] = "uartclk\0apb_pclk";
933 DeviceState *dev = qdev_new(TYPE_PL011);
934 SysBusDevice *s = SYS_BUS_DEVICE(dev);
935 MachineState *ms = MACHINE(vms);
936
937 qdev_prop_set_chr(dev, "chardev", chr);
938 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
939 memory_region_add_subregion(mem, base,
940 sysbus_mmio_get_region(s, 0));
941 sysbus_connect_irq(s, 0, qdev_get_gpio_in(vms->gic, irq));
942
943 nodename = g_strdup_printf("/pl011@%" PRIx64, base);
944 qemu_fdt_add_subnode(ms->fdt, nodename);
945 /* Note that we can't use setprop_string because of the embedded NUL */
946 qemu_fdt_setprop(ms->fdt, nodename, "compatible",
947 compat, sizeof(compat));
948 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
949 2, base, 2, size);
950 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
951 GIC_FDT_IRQ_TYPE_SPI, irq,
952 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
953 qemu_fdt_setprop_cells(ms->fdt, nodename, "clocks",
954 vms->clock_phandle, vms->clock_phandle);
955 qemu_fdt_setprop(ms->fdt, nodename, "clock-names",
956 clocknames, sizeof(clocknames));
957
958 if (uart == VIRT_UART0) {
959 qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename);
960 qemu_fdt_setprop_string(ms->fdt, "/aliases", "serial0", nodename);
961 } else {
962 qemu_fdt_setprop_string(ms->fdt, "/aliases", "serial1", nodename);
963 }
964 if (secure) {
965 /* Mark as not usable by the normal world */
966 qemu_fdt_setprop_string(ms->fdt, nodename, "status", "disabled");
967 qemu_fdt_setprop_string(ms->fdt, nodename, "secure-status", "okay");
968
969 qemu_fdt_setprop_string(ms->fdt, "/secure-chosen", "stdout-path",
970 nodename);
971 }
972
973 g_free(nodename);
974 }
975
create_rtc(const VirtMachineState * vms)976 static void create_rtc(const VirtMachineState *vms)
977 {
978 char *nodename;
979 hwaddr base = vms->memmap[VIRT_RTC].base;
980 hwaddr size = vms->memmap[VIRT_RTC].size;
981 int irq = vms->irqmap[VIRT_RTC];
982 const char compat[] = "arm,pl031\0arm,primecell";
983 MachineState *ms = MACHINE(vms);
984
985 sysbus_create_simple("pl031", base, qdev_get_gpio_in(vms->gic, irq));
986
987 nodename = g_strdup_printf("/pl031@%" PRIx64, base);
988 qemu_fdt_add_subnode(ms->fdt, nodename);
989 qemu_fdt_setprop(ms->fdt, nodename, "compatible", compat, sizeof(compat));
990 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
991 2, base, 2, size);
992 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
993 GIC_FDT_IRQ_TYPE_SPI, irq,
994 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
995 qemu_fdt_setprop_cell(ms->fdt, nodename, "clocks", vms->clock_phandle);
996 qemu_fdt_setprop_string(ms->fdt, nodename, "clock-names", "apb_pclk");
997 g_free(nodename);
998 }
999
1000 static DeviceState *gpio_key_dev;
virt_powerdown_req(Notifier * n,void * opaque)1001 static void virt_powerdown_req(Notifier *n, void *opaque)
1002 {
1003 VirtMachineState *s = container_of(n, VirtMachineState, powerdown_notifier);
1004
1005 if (s->acpi_dev) {
1006 acpi_send_event(s->acpi_dev, ACPI_POWER_DOWN_STATUS);
1007 } else {
1008 /* use gpio Pin for power button event */
1009 qemu_set_irq(qdev_get_gpio_in(gpio_key_dev, 0), 1);
1010 }
1011 }
1012
create_gpio_keys(char * fdt,DeviceState * pl061_dev,uint32_t phandle)1013 static void create_gpio_keys(char *fdt, DeviceState *pl061_dev,
1014 uint32_t phandle)
1015 {
1016 gpio_key_dev = sysbus_create_simple("gpio-key", -1,
1017 qdev_get_gpio_in(pl061_dev,
1018 GPIO_PIN_POWER_BUTTON));
1019
1020 qemu_fdt_add_subnode(fdt, "/gpio-keys");
1021 qemu_fdt_setprop_string(fdt, "/gpio-keys", "compatible", "gpio-keys");
1022
1023 qemu_fdt_add_subnode(fdt, "/gpio-keys/poweroff");
1024 qemu_fdt_setprop_string(fdt, "/gpio-keys/poweroff",
1025 "label", "GPIO Key Poweroff");
1026 qemu_fdt_setprop_cell(fdt, "/gpio-keys/poweroff", "linux,code",
1027 KEY_POWER);
1028 qemu_fdt_setprop_cells(fdt, "/gpio-keys/poweroff",
1029 "gpios", phandle, GPIO_PIN_POWER_BUTTON, 0);
1030 }
1031
1032 #define SECURE_GPIO_POWEROFF 0
1033 #define SECURE_GPIO_RESET 1
1034
create_secure_gpio_pwr(char * fdt,DeviceState * pl061_dev,uint32_t phandle)1035 static void create_secure_gpio_pwr(char *fdt, DeviceState *pl061_dev,
1036 uint32_t phandle)
1037 {
1038 DeviceState *gpio_pwr_dev;
1039
1040 /* gpio-pwr */
1041 gpio_pwr_dev = sysbus_create_simple("gpio-pwr", -1, NULL);
1042
1043 /* connect secure pl061 to gpio-pwr */
1044 qdev_connect_gpio_out(pl061_dev, SECURE_GPIO_RESET,
1045 qdev_get_gpio_in_named(gpio_pwr_dev, "reset", 0));
1046 qdev_connect_gpio_out(pl061_dev, SECURE_GPIO_POWEROFF,
1047 qdev_get_gpio_in_named(gpio_pwr_dev, "shutdown", 0));
1048
1049 qemu_fdt_add_subnode(fdt, "/gpio-poweroff");
1050 qemu_fdt_setprop_string(fdt, "/gpio-poweroff", "compatible",
1051 "gpio-poweroff");
1052 qemu_fdt_setprop_cells(fdt, "/gpio-poweroff",
1053 "gpios", phandle, SECURE_GPIO_POWEROFF, 0);
1054 qemu_fdt_setprop_string(fdt, "/gpio-poweroff", "status", "disabled");
1055 qemu_fdt_setprop_string(fdt, "/gpio-poweroff", "secure-status",
1056 "okay");
1057
1058 qemu_fdt_add_subnode(fdt, "/gpio-restart");
1059 qemu_fdt_setprop_string(fdt, "/gpio-restart", "compatible",
1060 "gpio-restart");
1061 qemu_fdt_setprop_cells(fdt, "/gpio-restart",
1062 "gpios", phandle, SECURE_GPIO_RESET, 0);
1063 qemu_fdt_setprop_string(fdt, "/gpio-restart", "status", "disabled");
1064 qemu_fdt_setprop_string(fdt, "/gpio-restart", "secure-status",
1065 "okay");
1066 }
1067
create_gpio_devices(const VirtMachineState * vms,int gpio,MemoryRegion * mem)1068 static void create_gpio_devices(const VirtMachineState *vms, int gpio,
1069 MemoryRegion *mem)
1070 {
1071 char *nodename;
1072 DeviceState *pl061_dev;
1073 hwaddr base = vms->memmap[gpio].base;
1074 hwaddr size = vms->memmap[gpio].size;
1075 int irq = vms->irqmap[gpio];
1076 const char compat[] = "arm,pl061\0arm,primecell";
1077 SysBusDevice *s;
1078 MachineState *ms = MACHINE(vms);
1079
1080 pl061_dev = qdev_new("pl061");
1081 /* Pull lines down to 0 if not driven by the PL061 */
1082 qdev_prop_set_uint32(pl061_dev, "pullups", 0);
1083 qdev_prop_set_uint32(pl061_dev, "pulldowns", 0xff);
1084 s = SYS_BUS_DEVICE(pl061_dev);
1085 sysbus_realize_and_unref(s, &error_fatal);
1086 memory_region_add_subregion(mem, base, sysbus_mmio_get_region(s, 0));
1087 sysbus_connect_irq(s, 0, qdev_get_gpio_in(vms->gic, irq));
1088
1089 uint32_t phandle = qemu_fdt_alloc_phandle(ms->fdt);
1090 nodename = g_strdup_printf("/pl061@%" PRIx64, base);
1091 qemu_fdt_add_subnode(ms->fdt, nodename);
1092 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1093 2, base, 2, size);
1094 qemu_fdt_setprop(ms->fdt, nodename, "compatible", compat, sizeof(compat));
1095 qemu_fdt_setprop_cell(ms->fdt, nodename, "#gpio-cells", 2);
1096 qemu_fdt_setprop(ms->fdt, nodename, "gpio-controller", NULL, 0);
1097 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
1098 GIC_FDT_IRQ_TYPE_SPI, irq,
1099 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
1100 qemu_fdt_setprop_cell(ms->fdt, nodename, "clocks", vms->clock_phandle);
1101 qemu_fdt_setprop_string(ms->fdt, nodename, "clock-names", "apb_pclk");
1102 qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", phandle);
1103
1104 if (gpio != VIRT_GPIO) {
1105 /* Mark as not usable by the normal world */
1106 qemu_fdt_setprop_string(ms->fdt, nodename, "status", "disabled");
1107 qemu_fdt_setprop_string(ms->fdt, nodename, "secure-status", "okay");
1108 }
1109 g_free(nodename);
1110
1111 /* Child gpio devices */
1112 if (gpio == VIRT_GPIO) {
1113 create_gpio_keys(ms->fdt, pl061_dev, phandle);
1114 } else {
1115 create_secure_gpio_pwr(ms->fdt, pl061_dev, phandle);
1116 }
1117 }
1118
create_virtio_devices(const VirtMachineState * vms)1119 static void create_virtio_devices(const VirtMachineState *vms)
1120 {
1121 int i;
1122 hwaddr size = vms->memmap[VIRT_MMIO].size;
1123 MachineState *ms = MACHINE(vms);
1124
1125 /* We create the transports in forwards order. Since qbus_realize()
1126 * prepends (not appends) new child buses, the incrementing loop below will
1127 * create a list of virtio-mmio buses with decreasing base addresses.
1128 *
1129 * When a -device option is processed from the command line,
1130 * qbus_find_recursive() picks the next free virtio-mmio bus in forwards
1131 * order. The upshot is that -device options in increasing command line
1132 * order are mapped to virtio-mmio buses with decreasing base addresses.
1133 *
1134 * When this code was originally written, that arrangement ensured that the
1135 * guest Linux kernel would give the lowest "name" (/dev/vda, eth0, etc) to
1136 * the first -device on the command line. (The end-to-end order is a
1137 * function of this loop, qbus_realize(), qbus_find_recursive(), and the
1138 * guest kernel's name-to-address assignment strategy.)
1139 *
1140 * Meanwhile, the kernel's traversal seems to have been reversed; see eg.
1141 * the message, if not necessarily the code, of commit 70161ff336.
1142 * Therefore the loop now establishes the inverse of the original intent.
1143 *
1144 * Unfortunately, we can't counteract the kernel change by reversing the
1145 * loop; it would break existing command lines.
1146 *
1147 * In any case, the kernel makes no guarantee about the stability of
1148 * enumeration order of virtio devices (as demonstrated by it changing
1149 * between kernel versions). For reliable and stable identification
1150 * of disks users must use UUIDs or similar mechanisms.
1151 */
1152 for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) {
1153 int irq = vms->irqmap[VIRT_MMIO] + i;
1154 hwaddr base = vms->memmap[VIRT_MMIO].base + i * size;
1155
1156 sysbus_create_simple("virtio-mmio", base,
1157 qdev_get_gpio_in(vms->gic, irq));
1158 }
1159
1160 /* We add dtb nodes in reverse order so that they appear in the finished
1161 * device tree lowest address first.
1162 *
1163 * Note that this mapping is independent of the loop above. The previous
1164 * loop influences virtio device to virtio transport assignment, whereas
1165 * this loop controls how virtio transports are laid out in the dtb.
1166 */
1167 for (i = NUM_VIRTIO_TRANSPORTS - 1; i >= 0; i--) {
1168 char *nodename;
1169 int irq = vms->irqmap[VIRT_MMIO] + i;
1170 hwaddr base = vms->memmap[VIRT_MMIO].base + i * size;
1171
1172 nodename = g_strdup_printf("/virtio_mmio@%" PRIx64, base);
1173 qemu_fdt_add_subnode(ms->fdt, nodename);
1174 qemu_fdt_setprop_string(ms->fdt, nodename,
1175 "compatible", "virtio,mmio");
1176 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1177 2, base, 2, size);
1178 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupts",
1179 GIC_FDT_IRQ_TYPE_SPI, irq,
1180 GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
1181 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
1182 g_free(nodename);
1183 }
1184 }
1185
1186 #define VIRT_FLASH_SECTOR_SIZE (256 * KiB)
1187
virt_flash_create1(VirtMachineState * vms,const char * name,const char * alias_prop_name)1188 static PFlashCFI01 *virt_flash_create1(VirtMachineState *vms,
1189 const char *name,
1190 const char *alias_prop_name)
1191 {
1192 /*
1193 * Create a single flash device. We use the same parameters as
1194 * the flash devices on the Versatile Express board.
1195 */
1196 DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
1197
1198 qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
1199 qdev_prop_set_uint8(dev, "width", 4);
1200 qdev_prop_set_uint8(dev, "device-width", 2);
1201 qdev_prop_set_bit(dev, "big-endian", false);
1202 qdev_prop_set_uint16(dev, "id0", 0x89);
1203 qdev_prop_set_uint16(dev, "id1", 0x18);
1204 qdev_prop_set_uint16(dev, "id2", 0x00);
1205 qdev_prop_set_uint16(dev, "id3", 0x00);
1206 qdev_prop_set_string(dev, "name", name);
1207 object_property_add_child(OBJECT(vms), name, OBJECT(dev));
1208 object_property_add_alias(OBJECT(vms), alias_prop_name,
1209 OBJECT(dev), "drive");
1210 return PFLASH_CFI01(dev);
1211 }
1212
virt_flash_create(VirtMachineState * vms)1213 static void virt_flash_create(VirtMachineState *vms)
1214 {
1215 vms->flash[0] = virt_flash_create1(vms, "virt.flash0", "pflash0");
1216 vms->flash[1] = virt_flash_create1(vms, "virt.flash1", "pflash1");
1217 }
1218
virt_flash_map1(PFlashCFI01 * flash,hwaddr base,hwaddr size,MemoryRegion * sysmem)1219 static void virt_flash_map1(PFlashCFI01 *flash,
1220 hwaddr base, hwaddr size,
1221 MemoryRegion *sysmem)
1222 {
1223 DeviceState *dev = DEVICE(flash);
1224
1225 assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
1226 assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
1227 qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
1228 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
1229
1230 memory_region_add_subregion(sysmem, base,
1231 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev),
1232 0));
1233 }
1234
virt_flash_map(VirtMachineState * vms,MemoryRegion * sysmem,MemoryRegion * secure_sysmem)1235 static void virt_flash_map(VirtMachineState *vms,
1236 MemoryRegion *sysmem,
1237 MemoryRegion *secure_sysmem)
1238 {
1239 /*
1240 * Map two flash devices to fill the VIRT_FLASH space in the memmap.
1241 * sysmem is the system memory space. secure_sysmem is the secure view
1242 * of the system, and the first flash device should be made visible only
1243 * there. The second flash device is visible to both secure and nonsecure.
1244 * If sysmem == secure_sysmem this means there is no separate Secure
1245 * address space and both flash devices are generally visible.
1246 */
1247 hwaddr flashsize = vms->memmap[VIRT_FLASH].size / 2;
1248 hwaddr flashbase = vms->memmap[VIRT_FLASH].base;
1249
1250 virt_flash_map1(vms->flash[0], flashbase, flashsize,
1251 secure_sysmem);
1252 virt_flash_map1(vms->flash[1], flashbase + flashsize, flashsize,
1253 sysmem);
1254 }
1255
virt_flash_fdt(VirtMachineState * vms,MemoryRegion * sysmem,MemoryRegion * secure_sysmem)1256 static void virt_flash_fdt(VirtMachineState *vms,
1257 MemoryRegion *sysmem,
1258 MemoryRegion *secure_sysmem)
1259 {
1260 hwaddr flashsize = vms->memmap[VIRT_FLASH].size / 2;
1261 hwaddr flashbase = vms->memmap[VIRT_FLASH].base;
1262 MachineState *ms = MACHINE(vms);
1263 char *nodename;
1264
1265 if (sysmem == secure_sysmem) {
1266 /* Report both flash devices as a single node in the DT */
1267 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase);
1268 qemu_fdt_add_subnode(ms->fdt, nodename);
1269 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash");
1270 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1271 2, flashbase, 2, flashsize,
1272 2, flashbase + flashsize, 2, flashsize);
1273 qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
1274 g_free(nodename);
1275 } else {
1276 /*
1277 * Report the devices as separate nodes so we can mark one as
1278 * only visible to the secure world.
1279 */
1280 nodename = g_strdup_printf("/secflash@%" PRIx64, flashbase);
1281 qemu_fdt_add_subnode(ms->fdt, nodename);
1282 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash");
1283 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1284 2, flashbase, 2, flashsize);
1285 qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
1286 qemu_fdt_setprop_string(ms->fdt, nodename, "status", "disabled");
1287 qemu_fdt_setprop_string(ms->fdt, nodename, "secure-status", "okay");
1288 g_free(nodename);
1289
1290 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase + flashsize);
1291 qemu_fdt_add_subnode(ms->fdt, nodename);
1292 qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash");
1293 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1294 2, flashbase + flashsize, 2, flashsize);
1295 qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
1296 g_free(nodename);
1297 }
1298 }
1299
virt_firmware_init(VirtMachineState * vms,MemoryRegion * sysmem,MemoryRegion * secure_sysmem)1300 static bool virt_firmware_init(VirtMachineState *vms,
1301 MemoryRegion *sysmem,
1302 MemoryRegion *secure_sysmem)
1303 {
1304 int i;
1305 const char *bios_name;
1306 BlockBackend *pflash_blk0;
1307
1308 /* Map legacy -drive if=pflash to machine properties */
1309 for (i = 0; i < ARRAY_SIZE(vms->flash); i++) {
1310 pflash_cfi01_legacy_drive(vms->flash[i],
1311 drive_get(IF_PFLASH, 0, i));
1312 }
1313
1314 virt_flash_map(vms, sysmem, secure_sysmem);
1315
1316 pflash_blk0 = pflash_cfi01_get_blk(vms->flash[0]);
1317
1318 bios_name = MACHINE(vms)->firmware;
1319 if (bios_name) {
1320 char *fname;
1321 MemoryRegion *mr;
1322 int image_size;
1323
1324 if (pflash_blk0) {
1325 error_report("The contents of the first flash device may be "
1326 "specified with -bios or with -drive if=pflash... "
1327 "but you cannot use both options at once");
1328 exit(1);
1329 }
1330
1331 /* Fall back to -bios */
1332
1333 fname = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
1334 if (!fname) {
1335 error_report("Could not find ROM image '%s'", bios_name);
1336 exit(1);
1337 }
1338 mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(vms->flash[0]), 0);
1339 image_size = load_image_mr(fname, mr);
1340 g_free(fname);
1341 if (image_size < 0) {
1342 error_report("Could not load ROM image '%s'", bios_name);
1343 exit(1);
1344 }
1345 }
1346
1347 return pflash_blk0 || bios_name;
1348 }
1349
create_fw_cfg(const VirtMachineState * vms,AddressSpace * as)1350 static FWCfgState *create_fw_cfg(const VirtMachineState *vms, AddressSpace *as)
1351 {
1352 MachineState *ms = MACHINE(vms);
1353 hwaddr base = vms->memmap[VIRT_FW_CFG].base;
1354 hwaddr size = vms->memmap[VIRT_FW_CFG].size;
1355 FWCfgState *fw_cfg;
1356 char *nodename;
1357
1358 fw_cfg = fw_cfg_init_mem_wide(base + 8, base, 8, base + 16, as);
1359 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)ms->smp.cpus);
1360
1361 nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
1362 qemu_fdt_add_subnode(ms->fdt, nodename);
1363 qemu_fdt_setprop_string(ms->fdt, nodename,
1364 "compatible", "qemu,fw-cfg-mmio");
1365 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1366 2, base, 2, size);
1367 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
1368 g_free(nodename);
1369 return fw_cfg;
1370 }
1371
create_pcie_irq_map(const MachineState * ms,uint32_t gic_phandle,int first_irq,const char * nodename)1372 static void create_pcie_irq_map(const MachineState *ms,
1373 uint32_t gic_phandle,
1374 int first_irq, const char *nodename)
1375 {
1376 int devfn, pin;
1377 uint32_t full_irq_map[4 * 4 * 10] = { 0 };
1378 uint32_t *irq_map = full_irq_map;
1379
1380 for (devfn = 0; devfn <= 0x18; devfn += 0x8) {
1381 for (pin = 0; pin < 4; pin++) {
1382 int irq_type = GIC_FDT_IRQ_TYPE_SPI;
1383 int irq_nr = first_irq + ((pin + PCI_SLOT(devfn)) % PCI_NUM_PINS);
1384 int irq_level = GIC_FDT_IRQ_FLAGS_LEVEL_HI;
1385 int i;
1386
1387 uint32_t map[] = {
1388 devfn << 8, 0, 0, /* devfn */
1389 pin + 1, /* PCI pin */
1390 gic_phandle, 0, 0, irq_type, irq_nr, irq_level }; /* GIC irq */
1391
1392 /* Convert map to big endian */
1393 for (i = 0; i < 10; i++) {
1394 irq_map[i] = cpu_to_be32(map[i]);
1395 }
1396 irq_map += 10;
1397 }
1398 }
1399
1400 qemu_fdt_setprop(ms->fdt, nodename, "interrupt-map",
1401 full_irq_map, sizeof(full_irq_map));
1402
1403 qemu_fdt_setprop_cells(ms->fdt, nodename, "interrupt-map-mask",
1404 cpu_to_be16(PCI_DEVFN(3, 0)), /* Slot 3 */
1405 0, 0,
1406 0x7 /* PCI irq */);
1407 }
1408
create_smmu(const VirtMachineState * vms,PCIBus * bus)1409 static void create_smmu(const VirtMachineState *vms,
1410 PCIBus *bus)
1411 {
1412 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
1413 char *node;
1414 const char compat[] = "arm,smmu-v3";
1415 int irq = vms->irqmap[VIRT_SMMU];
1416 int i;
1417 hwaddr base = vms->memmap[VIRT_SMMU].base;
1418 hwaddr size = vms->memmap[VIRT_SMMU].size;
1419 const char irq_names[] = "eventq\0priq\0cmdq-sync\0gerror";
1420 DeviceState *dev;
1421 MachineState *ms = MACHINE(vms);
1422
1423 if (vms->iommu != VIRT_IOMMU_SMMUV3 || !vms->iommu_phandle) {
1424 return;
1425 }
1426
1427 dev = qdev_new(TYPE_ARM_SMMUV3);
1428
1429 if (!vmc->no_nested_smmu) {
1430 object_property_set_str(OBJECT(dev), "stage", "nested", &error_fatal);
1431 }
1432 object_property_set_link(OBJECT(dev), "primary-bus", OBJECT(bus),
1433 &error_abort);
1434 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
1435 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
1436 for (i = 0; i < NUM_SMMU_IRQS; i++) {
1437 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
1438 qdev_get_gpio_in(vms->gic, irq + i));
1439 }
1440
1441 node = g_strdup_printf("/smmuv3@%" PRIx64, base);
1442 qemu_fdt_add_subnode(ms->fdt, node);
1443 qemu_fdt_setprop(ms->fdt, node, "compatible", compat, sizeof(compat));
1444 qemu_fdt_setprop_sized_cells(ms->fdt, node, "reg", 2, base, 2, size);
1445
1446 qemu_fdt_setprop_cells(ms->fdt, node, "interrupts",
1447 GIC_FDT_IRQ_TYPE_SPI, irq , GIC_FDT_IRQ_FLAGS_EDGE_LO_HI,
1448 GIC_FDT_IRQ_TYPE_SPI, irq + 1, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI,
1449 GIC_FDT_IRQ_TYPE_SPI, irq + 2, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI,
1450 GIC_FDT_IRQ_TYPE_SPI, irq + 3, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
1451
1452 qemu_fdt_setprop(ms->fdt, node, "interrupt-names", irq_names,
1453 sizeof(irq_names));
1454
1455 qemu_fdt_setprop(ms->fdt, node, "dma-coherent", NULL, 0);
1456
1457 qemu_fdt_setprop_cell(ms->fdt, node, "#iommu-cells", 1);
1458
1459 qemu_fdt_setprop_cell(ms->fdt, node, "phandle", vms->iommu_phandle);
1460 g_free(node);
1461 }
1462
create_virtio_iommu_dt_bindings(VirtMachineState * vms)1463 static void create_virtio_iommu_dt_bindings(VirtMachineState *vms)
1464 {
1465 const char compat[] = "virtio,pci-iommu\0pci1af4,1057";
1466 uint16_t bdf = vms->virtio_iommu_bdf;
1467 MachineState *ms = MACHINE(vms);
1468 char *node;
1469
1470 vms->iommu_phandle = qemu_fdt_alloc_phandle(ms->fdt);
1471
1472 node = g_strdup_printf("%s/virtio_iommu@%x,%x", vms->pciehb_nodename,
1473 PCI_SLOT(bdf), PCI_FUNC(bdf));
1474 qemu_fdt_add_subnode(ms->fdt, node);
1475 qemu_fdt_setprop(ms->fdt, node, "compatible", compat, sizeof(compat));
1476 qemu_fdt_setprop_sized_cells(ms->fdt, node, "reg",
1477 1, bdf << 8, 1, 0, 1, 0,
1478 1, 0, 1, 0);
1479
1480 qemu_fdt_setprop_cell(ms->fdt, node, "#iommu-cells", 1);
1481 qemu_fdt_setprop_cell(ms->fdt, node, "phandle", vms->iommu_phandle);
1482 g_free(node);
1483
1484 qemu_fdt_setprop_cells(ms->fdt, vms->pciehb_nodename, "iommu-map",
1485 0x0, vms->iommu_phandle, 0x0, bdf,
1486 bdf + 1, vms->iommu_phandle, bdf + 1, 0xffff - bdf);
1487 }
1488
create_pcie(VirtMachineState * vms)1489 static void create_pcie(VirtMachineState *vms)
1490 {
1491 hwaddr base_mmio = vms->memmap[VIRT_PCIE_MMIO].base;
1492 hwaddr size_mmio = vms->memmap[VIRT_PCIE_MMIO].size;
1493 hwaddr base_mmio_high = vms->memmap[VIRT_HIGH_PCIE_MMIO].base;
1494 hwaddr size_mmio_high = vms->memmap[VIRT_HIGH_PCIE_MMIO].size;
1495 hwaddr base_pio = vms->memmap[VIRT_PCIE_PIO].base;
1496 hwaddr size_pio = vms->memmap[VIRT_PCIE_PIO].size;
1497 hwaddr base_ecam, size_ecam;
1498 hwaddr base = base_mmio;
1499 int nr_pcie_buses;
1500 int irq = vms->irqmap[VIRT_PCIE];
1501 MemoryRegion *mmio_alias;
1502 MemoryRegion *mmio_reg;
1503 MemoryRegion *ecam_alias;
1504 MemoryRegion *ecam_reg;
1505 DeviceState *dev;
1506 char *nodename;
1507 int i, ecam_id;
1508 PCIHostState *pci;
1509 MachineState *ms = MACHINE(vms);
1510 MachineClass *mc = MACHINE_GET_CLASS(ms);
1511
1512 dev = qdev_new(TYPE_GPEX_HOST);
1513 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
1514
1515 ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
1516 base_ecam = vms->memmap[ecam_id].base;
1517 size_ecam = vms->memmap[ecam_id].size;
1518 nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
1519 /* Map only the first size_ecam bytes of ECAM space */
1520 ecam_alias = g_new0(MemoryRegion, 1);
1521 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
1522 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam",
1523 ecam_reg, 0, size_ecam);
1524 memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias);
1525
1526 /* Map the MMIO window into system address space so as to expose
1527 * the section of PCI MMIO space which starts at the same base address
1528 * (ie 1:1 mapping for that part of PCI MMIO space visible through
1529 * the window).
1530 */
1531 mmio_alias = g_new0(MemoryRegion, 1);
1532 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
1533 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio",
1534 mmio_reg, base_mmio, size_mmio);
1535 memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias);
1536
1537 if (vms->highmem_mmio) {
1538 /* Map high MMIO space */
1539 MemoryRegion *high_mmio_alias = g_new0(MemoryRegion, 1);
1540
1541 memory_region_init_alias(high_mmio_alias, OBJECT(dev), "pcie-mmio-high",
1542 mmio_reg, base_mmio_high, size_mmio_high);
1543 memory_region_add_subregion(get_system_memory(), base_mmio_high,
1544 high_mmio_alias);
1545 }
1546
1547 /* Map IO port space */
1548 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_pio);
1549
1550 for (i = 0; i < GPEX_NUM_IRQS; i++) {
1551 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
1552 qdev_get_gpio_in(vms->gic, irq + i));
1553 gpex_set_irq_num(GPEX_HOST(dev), i, irq + i);
1554 }
1555
1556 pci = PCI_HOST_BRIDGE(dev);
1557 pci->bypass_iommu = vms->default_bus_bypass_iommu;
1558 vms->bus = pci->bus;
1559 if (vms->bus) {
1560 pci_init_nic_devices(pci->bus, mc->default_nic);
1561 }
1562
1563 nodename = vms->pciehb_nodename = g_strdup_printf("/pcie@%" PRIx64, base);
1564 qemu_fdt_add_subnode(ms->fdt, nodename);
1565 qemu_fdt_setprop_string(ms->fdt, nodename,
1566 "compatible", "pci-host-ecam-generic");
1567 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci");
1568 qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3);
1569 qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2);
1570 qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0);
1571 qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0,
1572 nr_pcie_buses - 1);
1573 qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
1574
1575 if (vms->msi_phandle) {
1576 qemu_fdt_setprop_cells(ms->fdt, nodename, "msi-map",
1577 0, vms->msi_phandle, 0, 0x10000);
1578 }
1579
1580 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
1581 2, base_ecam, 2, size_ecam);
1582
1583 if (vms->highmem_mmio) {
1584 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges",
1585 1, FDT_PCI_RANGE_IOPORT, 2, 0,
1586 2, base_pio, 2, size_pio,
1587 1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
1588 2, base_mmio, 2, size_mmio,
1589 1, FDT_PCI_RANGE_MMIO_64BIT,
1590 2, base_mmio_high,
1591 2, base_mmio_high, 2, size_mmio_high);
1592 } else {
1593 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges",
1594 1, FDT_PCI_RANGE_IOPORT, 2, 0,
1595 2, base_pio, 2, size_pio,
1596 1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
1597 2, base_mmio, 2, size_mmio);
1598 }
1599
1600 qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 1);
1601 create_pcie_irq_map(ms, vms->gic_phandle, irq, nodename);
1602
1603 if (vms->iommu) {
1604 vms->iommu_phandle = qemu_fdt_alloc_phandle(ms->fdt);
1605
1606 switch (vms->iommu) {
1607 case VIRT_IOMMU_SMMUV3:
1608 create_smmu(vms, vms->bus);
1609 qemu_fdt_setprop_cells(ms->fdt, nodename, "iommu-map",
1610 0x0, vms->iommu_phandle, 0x0, 0x10000);
1611 break;
1612 default:
1613 g_assert_not_reached();
1614 }
1615 }
1616 }
1617
create_platform_bus(VirtMachineState * vms)1618 static void create_platform_bus(VirtMachineState *vms)
1619 {
1620 DeviceState *dev;
1621 SysBusDevice *s;
1622 int i;
1623 MemoryRegion *sysmem = get_system_memory();
1624
1625 dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE);
1626 dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE);
1627 qdev_prop_set_uint32(dev, "num_irqs", PLATFORM_BUS_NUM_IRQS);
1628 qdev_prop_set_uint32(dev, "mmio_size", vms->memmap[VIRT_PLATFORM_BUS].size);
1629 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
1630 vms->platform_bus_dev = dev;
1631
1632 s = SYS_BUS_DEVICE(dev);
1633 for (i = 0; i < PLATFORM_BUS_NUM_IRQS; i++) {
1634 int irq = vms->irqmap[VIRT_PLATFORM_BUS] + i;
1635 sysbus_connect_irq(s, i, qdev_get_gpio_in(vms->gic, irq));
1636 }
1637
1638 memory_region_add_subregion(sysmem,
1639 vms->memmap[VIRT_PLATFORM_BUS].base,
1640 sysbus_mmio_get_region(s, 0));
1641 }
1642
create_tag_ram(MemoryRegion * tag_sysmem,hwaddr base,hwaddr size,const char * name)1643 static void create_tag_ram(MemoryRegion *tag_sysmem,
1644 hwaddr base, hwaddr size,
1645 const char *name)
1646 {
1647 MemoryRegion *tagram = g_new(MemoryRegion, 1);
1648
1649 memory_region_init_ram(tagram, NULL, name, size / 32, &error_fatal);
1650 memory_region_add_subregion(tag_sysmem, base / 32, tagram);
1651 }
1652
create_secure_ram(VirtMachineState * vms,MemoryRegion * secure_sysmem,MemoryRegion * secure_tag_sysmem)1653 static void create_secure_ram(VirtMachineState *vms,
1654 MemoryRegion *secure_sysmem,
1655 MemoryRegion *secure_tag_sysmem)
1656 {
1657 MemoryRegion *secram = g_new(MemoryRegion, 1);
1658 char *nodename;
1659 hwaddr base = vms->memmap[VIRT_SECURE_MEM].base;
1660 hwaddr size = vms->memmap[VIRT_SECURE_MEM].size;
1661 MachineState *ms = MACHINE(vms);
1662
1663 memory_region_init_ram(secram, NULL, "virt.secure-ram", size,
1664 &error_fatal);
1665 memory_region_add_subregion(secure_sysmem, base, secram);
1666
1667 nodename = g_strdup_printf("/secram@%" PRIx64, base);
1668 qemu_fdt_add_subnode(ms->fdt, nodename);
1669 qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "memory");
1670 qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size);
1671 qemu_fdt_setprop_string(ms->fdt, nodename, "status", "disabled");
1672 qemu_fdt_setprop_string(ms->fdt, nodename, "secure-status", "okay");
1673
1674 if (secure_tag_sysmem) {
1675 create_tag_ram(secure_tag_sysmem, base, size, "mach-virt.secure-tag");
1676 }
1677
1678 g_free(nodename);
1679 }
1680
machvirt_dtb(const struct arm_boot_info * binfo,int * fdt_size)1681 static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size)
1682 {
1683 const VirtMachineState *board = container_of(binfo, VirtMachineState,
1684 bootinfo);
1685 MachineState *ms = MACHINE(board);
1686
1687
1688 *fdt_size = board->fdt_size;
1689 return ms->fdt;
1690 }
1691
virt_build_smbios(VirtMachineState * vms)1692 static void virt_build_smbios(VirtMachineState *vms)
1693 {
1694 MachineClass *mc = MACHINE_GET_CLASS(vms);
1695 MachineState *ms = MACHINE(vms);
1696 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
1697 uint8_t *smbios_tables, *smbios_anchor;
1698 size_t smbios_tables_len, smbios_anchor_len;
1699 struct smbios_phys_mem_area mem_array;
1700 const char *product = "QEMU Virtual Machine";
1701
1702 if (kvm_enabled()) {
1703 product = "KVM Virtual Machine";
1704 }
1705
1706 smbios_set_defaults("QEMU", product,
1707 vmc->smbios_old_sys_ver ? "1.0" : mc->name);
1708
1709 /* build the array of physical mem area from base_memmap */
1710 mem_array.address = vms->memmap[VIRT_MEM].base;
1711 mem_array.length = ms->ram_size;
1712
1713 smbios_get_tables(ms, SMBIOS_ENTRY_POINT_TYPE_64, &mem_array, 1,
1714 &smbios_tables, &smbios_tables_len,
1715 &smbios_anchor, &smbios_anchor_len,
1716 &error_fatal);
1717
1718 if (smbios_anchor) {
1719 fw_cfg_add_file(vms->fw_cfg, "etc/smbios/smbios-tables",
1720 smbios_tables, smbios_tables_len);
1721 fw_cfg_add_file(vms->fw_cfg, "etc/smbios/smbios-anchor",
1722 smbios_anchor, smbios_anchor_len);
1723 }
1724 }
1725
1726 static
virt_machine_done(Notifier * notifier,void * data)1727 void virt_machine_done(Notifier *notifier, void *data)
1728 {
1729 VirtMachineState *vms = container_of(notifier, VirtMachineState,
1730 machine_done);
1731 MachineState *ms = MACHINE(vms);
1732 ARMCPU *cpu = ARM_CPU(first_cpu);
1733 struct arm_boot_info *info = &vms->bootinfo;
1734 AddressSpace *as = arm_boot_address_space(cpu, info);
1735
1736 /*
1737 * If the user provided a dtb, we assume the dynamic sysbus nodes
1738 * already are integrated there. This corresponds to a use case where
1739 * the dynamic sysbus nodes are complex and their generation is not yet
1740 * supported. In that case the user can take charge of the guest dt
1741 * while qemu takes charge of the qom stuff.
1742 */
1743 if (info->dtb_filename == NULL) {
1744 platform_bus_add_all_fdt_nodes(ms->fdt, "/intc",
1745 vms->memmap[VIRT_PLATFORM_BUS].base,
1746 vms->memmap[VIRT_PLATFORM_BUS].size,
1747 vms->irqmap[VIRT_PLATFORM_BUS]);
1748 }
1749 if (arm_load_dtb(info->dtb_start, info, info->dtb_limit, as, ms) < 0) {
1750 exit(1);
1751 }
1752
1753 fw_cfg_add_extra_pci_roots(vms->bus, vms->fw_cfg);
1754
1755 virt_acpi_setup(vms);
1756 virt_build_smbios(vms);
1757 }
1758
virt_cpu_mp_affinity(VirtMachineState * vms,int idx)1759 static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx)
1760 {
1761 uint8_t clustersz = ARM_DEFAULT_CPUS_PER_CLUSTER;
1762 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
1763
1764 if (!vmc->disallow_affinity_adjustment) {
1765 /* Adjust MPIDR like 64-bit KVM hosts, which incorporate the
1766 * GIC's target-list limitations. 32-bit KVM hosts currently
1767 * always create clusters of 4 CPUs, but that is expected to
1768 * change when they gain support for gicv3. When KVM is enabled
1769 * it will override the changes we make here, therefore our
1770 * purposes are to make TCG consistent (with 64-bit KVM hosts)
1771 * and to improve SGI efficiency.
1772 */
1773 if (vms->gic_version == VIRT_GIC_VERSION_2) {
1774 clustersz = GIC_TARGETLIST_BITS;
1775 } else {
1776 clustersz = GICV3_TARGETLIST_BITS;
1777 }
1778 }
1779 return arm_build_mp_affinity(idx, clustersz);
1780 }
1781
virt_get_high_memmap_enabled(VirtMachineState * vms,int index)1782 static inline bool *virt_get_high_memmap_enabled(VirtMachineState *vms,
1783 int index)
1784 {
1785 bool *enabled_array[] = {
1786 &vms->highmem_redists,
1787 &vms->highmem_ecam,
1788 &vms->highmem_mmio,
1789 };
1790
1791 assert(ARRAY_SIZE(extended_memmap) - VIRT_LOWMEMMAP_LAST ==
1792 ARRAY_SIZE(enabled_array));
1793 assert(index - VIRT_LOWMEMMAP_LAST < ARRAY_SIZE(enabled_array));
1794
1795 return enabled_array[index - VIRT_LOWMEMMAP_LAST];
1796 }
1797
virt_set_high_memmap(VirtMachineState * vms,hwaddr base,int pa_bits)1798 static void virt_set_high_memmap(VirtMachineState *vms,
1799 hwaddr base, int pa_bits)
1800 {
1801 hwaddr region_base, region_size;
1802 bool *region_enabled, fits;
1803 int i;
1804
1805 for (i = VIRT_LOWMEMMAP_LAST; i < ARRAY_SIZE(extended_memmap); i++) {
1806 region_enabled = virt_get_high_memmap_enabled(vms, i);
1807 region_base = ROUND_UP(base, extended_memmap[i].size);
1808 region_size = extended_memmap[i].size;
1809
1810 vms->memmap[i].base = region_base;
1811 vms->memmap[i].size = region_size;
1812
1813 /*
1814 * Check each device to see if it fits in the PA space,
1815 * moving highest_gpa as we go. For compatibility, move
1816 * highest_gpa for disabled fitting devices as well, if
1817 * the compact layout has been disabled.
1818 *
1819 * For each device that doesn't fit, disable it.
1820 */
1821 fits = (region_base + region_size) <= BIT_ULL(pa_bits);
1822 *region_enabled &= fits;
1823 if (vms->highmem_compact && !*region_enabled) {
1824 continue;
1825 }
1826
1827 base = region_base + region_size;
1828 if (fits) {
1829 vms->highest_gpa = base - 1;
1830 }
1831 }
1832 }
1833
virt_set_memmap(VirtMachineState * vms,int pa_bits)1834 static void virt_set_memmap(VirtMachineState *vms, int pa_bits)
1835 {
1836 MachineState *ms = MACHINE(vms);
1837 hwaddr base, device_memory_base, device_memory_size, memtop;
1838 int i;
1839
1840 vms->memmap = extended_memmap;
1841
1842 for (i = 0; i < ARRAY_SIZE(base_memmap); i++) {
1843 vms->memmap[i] = base_memmap[i];
1844 }
1845
1846 if (ms->ram_slots > ACPI_MAX_RAM_SLOTS) {
1847 error_report("unsupported number of memory slots: %"PRIu64,
1848 ms->ram_slots);
1849 exit(EXIT_FAILURE);
1850 }
1851
1852 /*
1853 * !highmem is exactly the same as limiting the PA space to 32bit,
1854 * irrespective of the underlying capabilities of the HW.
1855 */
1856 if (!vms->highmem) {
1857 pa_bits = 32;
1858 }
1859
1860 /*
1861 * We compute the base of the high IO region depending on the
1862 * amount of initial and device memory. The device memory start/size
1863 * is aligned on 1GiB. We never put the high IO region below 256GiB
1864 * so that if maxram_size is < 255GiB we keep the legacy memory map.
1865 * The device region size assumes 1GiB page max alignment per slot.
1866 */
1867 device_memory_base =
1868 ROUND_UP(vms->memmap[VIRT_MEM].base + ms->ram_size, GiB);
1869 device_memory_size = ms->maxram_size - ms->ram_size + ms->ram_slots * GiB;
1870
1871 /* Base address of the high IO region */
1872 memtop = base = device_memory_base + ROUND_UP(device_memory_size, GiB);
1873 if (memtop > BIT_ULL(pa_bits)) {
1874 error_report("Addressing limited to %d bits, but memory exceeds it by %llu bytes",
1875 pa_bits, memtop - BIT_ULL(pa_bits));
1876 exit(EXIT_FAILURE);
1877 }
1878 if (base < device_memory_base) {
1879 error_report("maxmem/slots too huge");
1880 exit(EXIT_FAILURE);
1881 }
1882 if (base < vms->memmap[VIRT_MEM].base + LEGACY_RAMLIMIT_BYTES) {
1883 base = vms->memmap[VIRT_MEM].base + LEGACY_RAMLIMIT_BYTES;
1884 }
1885
1886 /* We know for sure that at least the memory fits in the PA space */
1887 vms->highest_gpa = memtop - 1;
1888
1889 virt_set_high_memmap(vms, base, pa_bits);
1890
1891 if (device_memory_size > 0) {
1892 machine_memory_devices_init(ms, device_memory_base, device_memory_size);
1893 }
1894 }
1895
finalize_gic_version_do(const char * accel_name,VirtGICType gic_version,int gics_supported,unsigned int max_cpus)1896 static VirtGICType finalize_gic_version_do(const char *accel_name,
1897 VirtGICType gic_version,
1898 int gics_supported,
1899 unsigned int max_cpus)
1900 {
1901 /* Convert host/max/nosel to GIC version number */
1902 switch (gic_version) {
1903 case VIRT_GIC_VERSION_HOST:
1904 if (!kvm_enabled()) {
1905 error_report("gic-version=host requires KVM");
1906 exit(1);
1907 }
1908
1909 /* For KVM, gic-version=host means gic-version=max */
1910 return finalize_gic_version_do(accel_name, VIRT_GIC_VERSION_MAX,
1911 gics_supported, max_cpus);
1912 case VIRT_GIC_VERSION_MAX:
1913 if (gics_supported & VIRT_GIC_VERSION_4_MASK) {
1914 gic_version = VIRT_GIC_VERSION_4;
1915 } else if (gics_supported & VIRT_GIC_VERSION_3_MASK) {
1916 gic_version = VIRT_GIC_VERSION_3;
1917 } else {
1918 gic_version = VIRT_GIC_VERSION_2;
1919 }
1920 break;
1921 case VIRT_GIC_VERSION_NOSEL:
1922 if ((gics_supported & VIRT_GIC_VERSION_2_MASK) &&
1923 max_cpus <= GIC_NCPU) {
1924 gic_version = VIRT_GIC_VERSION_2;
1925 } else if (gics_supported & VIRT_GIC_VERSION_3_MASK) {
1926 /*
1927 * in case the host does not support v2 emulation or
1928 * the end-user requested more than 8 VCPUs we now default
1929 * to v3. In any case defaulting to v2 would be broken.
1930 */
1931 gic_version = VIRT_GIC_VERSION_3;
1932 } else if (max_cpus > GIC_NCPU) {
1933 error_report("%s only supports GICv2 emulation but more than 8 "
1934 "vcpus are requested", accel_name);
1935 exit(1);
1936 }
1937 break;
1938 case VIRT_GIC_VERSION_2:
1939 case VIRT_GIC_VERSION_3:
1940 case VIRT_GIC_VERSION_4:
1941 break;
1942 }
1943
1944 /* Check chosen version is effectively supported */
1945 switch (gic_version) {
1946 case VIRT_GIC_VERSION_2:
1947 if (!(gics_supported & VIRT_GIC_VERSION_2_MASK)) {
1948 error_report("%s does not support GICv2 emulation", accel_name);
1949 exit(1);
1950 }
1951 break;
1952 case VIRT_GIC_VERSION_3:
1953 if (!(gics_supported & VIRT_GIC_VERSION_3_MASK)) {
1954 error_report("%s does not support GICv3 emulation", accel_name);
1955 exit(1);
1956 }
1957 break;
1958 case VIRT_GIC_VERSION_4:
1959 if (!(gics_supported & VIRT_GIC_VERSION_4_MASK)) {
1960 error_report("%s does not support GICv4 emulation, is virtualization=on?",
1961 accel_name);
1962 exit(1);
1963 }
1964 break;
1965 default:
1966 error_report("logic error in finalize_gic_version");
1967 exit(1);
1968 break;
1969 }
1970
1971 return gic_version;
1972 }
1973
1974 /*
1975 * finalize_gic_version - Determines the final gic_version
1976 * according to the gic-version property
1977 *
1978 * Default GIC type is v2
1979 */
finalize_gic_version(VirtMachineState * vms)1980 static void finalize_gic_version(VirtMachineState *vms)
1981 {
1982 const char *accel_name = current_accel_name();
1983 unsigned int max_cpus = MACHINE(vms)->smp.max_cpus;
1984 int gics_supported = 0;
1985
1986 /* Determine which GIC versions the current environment supports */
1987 if (kvm_enabled() && kvm_irqchip_in_kernel()) {
1988 int probe_bitmap = kvm_arm_vgic_probe();
1989
1990 if (!probe_bitmap) {
1991 error_report("Unable to determine GIC version supported by host");
1992 exit(1);
1993 }
1994
1995 if (probe_bitmap & KVM_ARM_VGIC_V2) {
1996 gics_supported |= VIRT_GIC_VERSION_2_MASK;
1997 }
1998 if (probe_bitmap & KVM_ARM_VGIC_V3) {
1999 gics_supported |= VIRT_GIC_VERSION_3_MASK;
2000 }
2001 } else if (kvm_enabled() && !kvm_irqchip_in_kernel()) {
2002 /* KVM w/o kernel irqchip can only deal with GICv2 */
2003 gics_supported |= VIRT_GIC_VERSION_2_MASK;
2004 accel_name = "KVM with kernel-irqchip=off";
2005 } else if (tcg_enabled() || hvf_enabled() || qtest_enabled()) {
2006 gics_supported |= VIRT_GIC_VERSION_2_MASK;
2007 if (module_object_class_by_name("arm-gicv3")) {
2008 gics_supported |= VIRT_GIC_VERSION_3_MASK;
2009 if (vms->virt) {
2010 /* GICv4 only makes sense if CPU has EL2 */
2011 gics_supported |= VIRT_GIC_VERSION_4_MASK;
2012 }
2013 }
2014 } else {
2015 error_report("Unsupported accelerator, can not determine GIC support");
2016 exit(1);
2017 }
2018
2019 /*
2020 * Then convert helpers like host/max to concrete GIC versions and ensure
2021 * the desired version is supported
2022 */
2023 vms->gic_version = finalize_gic_version_do(accel_name, vms->gic_version,
2024 gics_supported, max_cpus);
2025 }
2026
2027 /*
2028 * virt_cpu_post_init() must be called after the CPUs have
2029 * been realized and the GIC has been created.
2030 */
virt_cpu_post_init(VirtMachineState * vms,MemoryRegion * sysmem)2031 static void virt_cpu_post_init(VirtMachineState *vms, MemoryRegion *sysmem)
2032 {
2033 int max_cpus = MACHINE(vms)->smp.max_cpus;
2034 bool aarch64, pmu, steal_time;
2035 CPUState *cpu;
2036
2037 aarch64 = object_property_get_bool(OBJECT(first_cpu), "aarch64", NULL);
2038 pmu = object_property_get_bool(OBJECT(first_cpu), "pmu", NULL);
2039 steal_time = object_property_get_bool(OBJECT(first_cpu),
2040 "kvm-steal-time", NULL);
2041
2042 if (kvm_enabled()) {
2043 hwaddr pvtime_reg_base = vms->memmap[VIRT_PVTIME].base;
2044 hwaddr pvtime_reg_size = vms->memmap[VIRT_PVTIME].size;
2045
2046 if (steal_time) {
2047 MemoryRegion *pvtime = g_new(MemoryRegion, 1);
2048 hwaddr pvtime_size = max_cpus * PVTIME_SIZE_PER_CPU;
2049
2050 /* The memory region size must be a multiple of host page size. */
2051 pvtime_size = REAL_HOST_PAGE_ALIGN(pvtime_size);
2052
2053 if (pvtime_size > pvtime_reg_size) {
2054 error_report("pvtime requires a %" HWADDR_PRId
2055 " byte memory region for %d CPUs,"
2056 " but only %" HWADDR_PRId " has been reserved",
2057 pvtime_size, max_cpus, pvtime_reg_size);
2058 exit(1);
2059 }
2060
2061 memory_region_init_ram(pvtime, NULL, "pvtime", pvtime_size, NULL);
2062 memory_region_add_subregion(sysmem, pvtime_reg_base, pvtime);
2063 }
2064
2065 CPU_FOREACH(cpu) {
2066 if (pmu) {
2067 assert(arm_feature(&ARM_CPU(cpu)->env, ARM_FEATURE_PMU));
2068 if (kvm_irqchip_in_kernel()) {
2069 kvm_arm_pmu_set_irq(ARM_CPU(cpu), VIRTUAL_PMU_IRQ);
2070 }
2071 kvm_arm_pmu_init(ARM_CPU(cpu));
2072 }
2073 if (steal_time) {
2074 kvm_arm_pvtime_init(ARM_CPU(cpu), pvtime_reg_base
2075 + cpu->cpu_index
2076 * PVTIME_SIZE_PER_CPU);
2077 }
2078 }
2079 } else {
2080 if (aarch64 && vms->highmem) {
2081 int requested_pa_size = 64 - clz64(vms->highest_gpa);
2082 int pamax = arm_pamax(ARM_CPU(first_cpu));
2083
2084 if (pamax < requested_pa_size) {
2085 error_report("VCPU supports less PA bits (%d) than "
2086 "requested by the memory map (%d)",
2087 pamax, requested_pa_size);
2088 exit(1);
2089 }
2090 }
2091 }
2092 }
2093
machvirt_init(MachineState * machine)2094 static void machvirt_init(MachineState *machine)
2095 {
2096 VirtMachineState *vms = VIRT_MACHINE(machine);
2097 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(machine);
2098 MachineClass *mc = MACHINE_GET_CLASS(machine);
2099 const CPUArchIdList *possible_cpus;
2100 MemoryRegion *sysmem = get_system_memory();
2101 MemoryRegion *secure_sysmem = NULL;
2102 MemoryRegion *tag_sysmem = NULL;
2103 MemoryRegion *secure_tag_sysmem = NULL;
2104 int n, virt_max_cpus;
2105 bool firmware_loaded;
2106 bool aarch64 = true;
2107 bool has_ged = !vmc->no_ged;
2108 unsigned int smp_cpus = machine->smp.cpus;
2109 unsigned int max_cpus = machine->smp.max_cpus;
2110
2111 possible_cpus = mc->possible_cpu_arch_ids(machine);
2112
2113 /*
2114 * In accelerated mode, the memory map is computed earlier in kvm_type()
2115 * for Linux, or hvf_get_physical_address_range() for macOS to create a
2116 * VM with the right number of IPA bits.
2117 */
2118 if (!vms->memmap) {
2119 Object *cpuobj;
2120 ARMCPU *armcpu;
2121 int pa_bits;
2122
2123 /*
2124 * Instantiate a temporary CPU object to find out about what
2125 * we are about to deal with. Once this is done, get rid of
2126 * the object.
2127 */
2128 cpuobj = object_new(possible_cpus->cpus[0].type);
2129 armcpu = ARM_CPU(cpuobj);
2130
2131 pa_bits = arm_pamax(armcpu);
2132
2133 object_unref(cpuobj);
2134
2135 virt_set_memmap(vms, pa_bits);
2136 }
2137
2138 /* We can probe only here because during property set
2139 * KVM is not available yet
2140 */
2141 finalize_gic_version(vms);
2142
2143 if (vms->secure) {
2144 /*
2145 * The Secure view of the world is the same as the NonSecure,
2146 * but with a few extra devices. Create it as a container region
2147 * containing the system memory at low priority; any secure-only
2148 * devices go in at higher priority and take precedence.
2149 */
2150 secure_sysmem = g_new(MemoryRegion, 1);
2151 memory_region_init(secure_sysmem, OBJECT(machine), "secure-memory",
2152 UINT64_MAX);
2153 memory_region_add_subregion_overlap(secure_sysmem, 0, sysmem, -1);
2154 }
2155
2156 firmware_loaded = virt_firmware_init(vms, sysmem,
2157 secure_sysmem ?: sysmem);
2158
2159 /* If we have an EL3 boot ROM then the assumption is that it will
2160 * implement PSCI itself, so disable QEMU's internal implementation
2161 * so it doesn't get in the way. Instead of starting secondary
2162 * CPUs in PSCI powerdown state we will start them all running and
2163 * let the boot ROM sort them out.
2164 * The usual case is that we do use QEMU's PSCI implementation;
2165 * if the guest has EL2 then we will use SMC as the conduit,
2166 * and otherwise we will use HVC (for backwards compatibility and
2167 * because if we're using KVM then we must use HVC).
2168 */
2169 if (vms->secure && firmware_loaded) {
2170 vms->psci_conduit = QEMU_PSCI_CONDUIT_DISABLED;
2171 } else if (vms->virt) {
2172 vms->psci_conduit = QEMU_PSCI_CONDUIT_SMC;
2173 } else {
2174 vms->psci_conduit = QEMU_PSCI_CONDUIT_HVC;
2175 }
2176
2177 /*
2178 * The maximum number of CPUs depends on the GIC version, or on how
2179 * many redistributors we can fit into the memory map (which in turn
2180 * depends on whether this is a GICv3 or v4).
2181 */
2182 if (vms->gic_version == VIRT_GIC_VERSION_2) {
2183 virt_max_cpus = GIC_NCPU;
2184 } else {
2185 virt_max_cpus = virt_redist_capacity(vms, VIRT_GIC_REDIST);
2186 if (vms->highmem_redists) {
2187 virt_max_cpus += virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2);
2188 }
2189 }
2190
2191 if (max_cpus > virt_max_cpus) {
2192 error_report("Number of SMP CPUs requested (%d) exceeds max CPUs "
2193 "supported by machine 'mach-virt' (%d)",
2194 max_cpus, virt_max_cpus);
2195 if (vms->gic_version != VIRT_GIC_VERSION_2 && !vms->highmem_redists) {
2196 error_printf("Try 'highmem-redists=on' for more CPUs\n");
2197 }
2198
2199 exit(1);
2200 }
2201
2202 if (vms->secure && (kvm_enabled() || hvf_enabled())) {
2203 error_report("mach-virt: %s does not support providing "
2204 "Security extensions (TrustZone) to the guest CPU",
2205 current_accel_name());
2206 exit(1);
2207 }
2208
2209 if (vms->virt && (kvm_enabled() || hvf_enabled())) {
2210 error_report("mach-virt: %s does not support providing "
2211 "Virtualization extensions to the guest CPU",
2212 current_accel_name());
2213 exit(1);
2214 }
2215
2216 if (vms->mte && (kvm_enabled() || hvf_enabled())) {
2217 error_report("mach-virt: %s does not support providing "
2218 "MTE to the guest CPU",
2219 current_accel_name());
2220 exit(1);
2221 }
2222
2223 create_fdt(vms);
2224
2225 assert(possible_cpus->len == max_cpus);
2226 for (n = 0; n < possible_cpus->len; n++) {
2227 Object *cpuobj;
2228 CPUState *cs;
2229
2230 if (n >= smp_cpus) {
2231 break;
2232 }
2233
2234 cpuobj = object_new(possible_cpus->cpus[n].type);
2235 object_property_set_int(cpuobj, "mp-affinity",
2236 possible_cpus->cpus[n].arch_id, NULL);
2237
2238 cs = CPU(cpuobj);
2239 cs->cpu_index = n;
2240
2241 numa_cpu_pre_plug(&possible_cpus->cpus[cs->cpu_index], DEVICE(cpuobj),
2242 &error_fatal);
2243
2244 aarch64 &= object_property_get_bool(cpuobj, "aarch64", NULL);
2245
2246 if (!vms->secure) {
2247 object_property_set_bool(cpuobj, "has_el3", false, NULL);
2248 }
2249
2250 if (!vms->virt && object_property_find(cpuobj, "has_el2")) {
2251 object_property_set_bool(cpuobj, "has_el2", false, NULL);
2252 }
2253
2254 if (vmc->kvm_no_adjvtime &&
2255 object_property_find(cpuobj, "kvm-no-adjvtime")) {
2256 object_property_set_bool(cpuobj, "kvm-no-adjvtime", true, NULL);
2257 }
2258
2259 if (vmc->no_kvm_steal_time &&
2260 object_property_find(cpuobj, "kvm-steal-time")) {
2261 object_property_set_bool(cpuobj, "kvm-steal-time", false, NULL);
2262 }
2263
2264 if (vmc->no_pmu && object_property_find(cpuobj, "pmu")) {
2265 object_property_set_bool(cpuobj, "pmu", false, NULL);
2266 }
2267
2268 if (vmc->no_tcg_lpa2 && object_property_find(cpuobj, "lpa2")) {
2269 object_property_set_bool(cpuobj, "lpa2", false, NULL);
2270 }
2271
2272 if (object_property_find(cpuobj, "reset-cbar")) {
2273 object_property_set_int(cpuobj, "reset-cbar",
2274 vms->memmap[VIRT_CPUPERIPHS].base,
2275 &error_abort);
2276 }
2277
2278 object_property_set_link(cpuobj, "memory", OBJECT(sysmem),
2279 &error_abort);
2280 if (vms->secure) {
2281 object_property_set_link(cpuobj, "secure-memory",
2282 OBJECT(secure_sysmem), &error_abort);
2283 }
2284
2285 if (vms->mte) {
2286 /* Create the memory region only once, but link to all cpus. */
2287 if (!tag_sysmem) {
2288 /*
2289 * The property exists only if MemTag is supported.
2290 * If it is, we must allocate the ram to back that up.
2291 */
2292 if (!object_property_find(cpuobj, "tag-memory")) {
2293 error_report("MTE requested, but not supported "
2294 "by the guest CPU");
2295 exit(1);
2296 }
2297
2298 tag_sysmem = g_new(MemoryRegion, 1);
2299 memory_region_init(tag_sysmem, OBJECT(machine),
2300 "tag-memory", UINT64_MAX / 32);
2301
2302 if (vms->secure) {
2303 secure_tag_sysmem = g_new(MemoryRegion, 1);
2304 memory_region_init(secure_tag_sysmem, OBJECT(machine),
2305 "secure-tag-memory", UINT64_MAX / 32);
2306
2307 /* As with ram, secure-tag takes precedence over tag. */
2308 memory_region_add_subregion_overlap(secure_tag_sysmem, 0,
2309 tag_sysmem, -1);
2310 }
2311 }
2312
2313 object_property_set_link(cpuobj, "tag-memory", OBJECT(tag_sysmem),
2314 &error_abort);
2315 if (vms->secure) {
2316 object_property_set_link(cpuobj, "secure-tag-memory",
2317 OBJECT(secure_tag_sysmem),
2318 &error_abort);
2319 }
2320 }
2321
2322 qdev_realize(DEVICE(cpuobj), NULL, &error_fatal);
2323 object_unref(cpuobj);
2324 }
2325
2326 /* Now we've created the CPUs we can see if they have the hypvirt timer */
2327 vms->ns_el2_virt_timer_irq = ns_el2_virt_timer_present() &&
2328 !vmc->no_ns_el2_virt_timer_irq;
2329
2330 fdt_add_timer_nodes(vms);
2331 fdt_add_cpu_nodes(vms);
2332
2333 memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base,
2334 machine->ram);
2335
2336 virt_flash_fdt(vms, sysmem, secure_sysmem ?: sysmem);
2337
2338 create_gic(vms, sysmem);
2339
2340 virt_cpu_post_init(vms, sysmem);
2341
2342 fdt_add_pmu_nodes(vms);
2343
2344 /*
2345 * The first UART always exists. If the security extensions are
2346 * enabled, the second UART also always exists. Otherwise, it only exists
2347 * if a backend is configured explicitly via '-serial <backend>'.
2348 * This avoids potentially breaking existing user setups that expect
2349 * only one NonSecure UART to be present (for instance, older EDK2
2350 * binaries).
2351 *
2352 * The nodes end up in the DTB in reverse order of creation, so we must
2353 * create UART0 last to ensure it appears as the first node in the DTB,
2354 * for compatibility with guest software that just iterates through the
2355 * DTB to find the first UART, as older versions of EDK2 do.
2356 * DTB readers that follow the spec, as Linux does, should honour the
2357 * aliases node information and /chosen/stdout-path regardless of
2358 * the order that nodes appear in the DTB.
2359 *
2360 * For similar back-compatibility reasons, if UART1 is the secure UART
2361 * we create it second (and so it appears first in the DTB), because
2362 * that's what QEMU has always done.
2363 */
2364 if (!vms->secure) {
2365 Chardev *serial1 = serial_hd(1);
2366
2367 if (serial1) {
2368 vms->second_ns_uart_present = true;
2369 create_uart(vms, VIRT_UART1, sysmem, serial1, false);
2370 }
2371 }
2372 create_uart(vms, VIRT_UART0, sysmem, serial_hd(0), false);
2373 if (vms->secure) {
2374 create_uart(vms, VIRT_UART1, secure_sysmem, serial_hd(1), true);
2375 }
2376
2377 if (vms->secure) {
2378 create_secure_ram(vms, secure_sysmem, secure_tag_sysmem);
2379 }
2380
2381 if (tag_sysmem) {
2382 create_tag_ram(tag_sysmem, vms->memmap[VIRT_MEM].base,
2383 machine->ram_size, "mach-virt.tag");
2384 }
2385
2386 vms->highmem_ecam &= (!firmware_loaded || aarch64);
2387
2388 create_rtc(vms);
2389
2390 create_pcie(vms);
2391
2392 if (has_ged && aarch64 && firmware_loaded && virt_is_acpi_enabled(vms)) {
2393 vms->acpi_dev = create_acpi_ged(vms);
2394 } else {
2395 create_gpio_devices(vms, VIRT_GPIO, sysmem);
2396 }
2397
2398 if (vms->secure && !vmc->no_secure_gpio) {
2399 create_gpio_devices(vms, VIRT_SECURE_GPIO, secure_sysmem);
2400 }
2401
2402 /* connect powerdown request */
2403 vms->powerdown_notifier.notify = virt_powerdown_req;
2404 qemu_register_powerdown_notifier(&vms->powerdown_notifier);
2405
2406 /* Create mmio transports, so the user can create virtio backends
2407 * (which will be automatically plugged in to the transports). If
2408 * no backend is created the transport will just sit harmlessly idle.
2409 */
2410 create_virtio_devices(vms);
2411
2412 vms->fw_cfg = create_fw_cfg(vms, &address_space_memory);
2413 rom_set_fw(vms->fw_cfg);
2414
2415 create_platform_bus(vms);
2416
2417 if (machine->nvdimms_state->is_enabled) {
2418 const struct AcpiGenericAddress arm_virt_nvdimm_acpi_dsmio = {
2419 .space_id = AML_AS_SYSTEM_MEMORY,
2420 .address = vms->memmap[VIRT_NVDIMM_ACPI].base,
2421 .bit_width = NVDIMM_ACPI_IO_LEN << 3
2422 };
2423
2424 nvdimm_init_acpi_state(machine->nvdimms_state, sysmem,
2425 arm_virt_nvdimm_acpi_dsmio,
2426 vms->fw_cfg, OBJECT(vms));
2427 }
2428
2429 vms->bootinfo.ram_size = machine->ram_size;
2430 vms->bootinfo.board_id = -1;
2431 vms->bootinfo.loader_start = vms->memmap[VIRT_MEM].base;
2432 vms->bootinfo.get_dtb = machvirt_dtb;
2433 vms->bootinfo.skip_dtb_autoload = true;
2434 vms->bootinfo.firmware_loaded = firmware_loaded;
2435 vms->bootinfo.psci_conduit = vms->psci_conduit;
2436 arm_load_kernel(ARM_CPU(first_cpu), machine, &vms->bootinfo);
2437
2438 vms->machine_done.notify = virt_machine_done;
2439 qemu_add_machine_init_done_notifier(&vms->machine_done);
2440 }
2441
virt_get_secure(Object * obj,Error ** errp)2442 static bool virt_get_secure(Object *obj, Error **errp)
2443 {
2444 VirtMachineState *vms = VIRT_MACHINE(obj);
2445
2446 return vms->secure;
2447 }
2448
virt_set_secure(Object * obj,bool value,Error ** errp)2449 static void virt_set_secure(Object *obj, bool value, Error **errp)
2450 {
2451 VirtMachineState *vms = VIRT_MACHINE(obj);
2452
2453 vms->secure = value;
2454 }
2455
virt_get_virt(Object * obj,Error ** errp)2456 static bool virt_get_virt(Object *obj, Error **errp)
2457 {
2458 VirtMachineState *vms = VIRT_MACHINE(obj);
2459
2460 return vms->virt;
2461 }
2462
virt_set_virt(Object * obj,bool value,Error ** errp)2463 static void virt_set_virt(Object *obj, bool value, Error **errp)
2464 {
2465 VirtMachineState *vms = VIRT_MACHINE(obj);
2466
2467 vms->virt = value;
2468 }
2469
virt_get_highmem(Object * obj,Error ** errp)2470 static bool virt_get_highmem(Object *obj, Error **errp)
2471 {
2472 VirtMachineState *vms = VIRT_MACHINE(obj);
2473
2474 return vms->highmem;
2475 }
2476
virt_set_highmem(Object * obj,bool value,Error ** errp)2477 static void virt_set_highmem(Object *obj, bool value, Error **errp)
2478 {
2479 VirtMachineState *vms = VIRT_MACHINE(obj);
2480
2481 vms->highmem = value;
2482 }
2483
virt_get_compact_highmem(Object * obj,Error ** errp)2484 static bool virt_get_compact_highmem(Object *obj, Error **errp)
2485 {
2486 VirtMachineState *vms = VIRT_MACHINE(obj);
2487
2488 return vms->highmem_compact;
2489 }
2490
virt_set_compact_highmem(Object * obj,bool value,Error ** errp)2491 static void virt_set_compact_highmem(Object *obj, bool value, Error **errp)
2492 {
2493 VirtMachineState *vms = VIRT_MACHINE(obj);
2494
2495 vms->highmem_compact = value;
2496 }
2497
virt_get_highmem_redists(Object * obj,Error ** errp)2498 static bool virt_get_highmem_redists(Object *obj, Error **errp)
2499 {
2500 VirtMachineState *vms = VIRT_MACHINE(obj);
2501
2502 return vms->highmem_redists;
2503 }
2504
virt_set_highmem_redists(Object * obj,bool value,Error ** errp)2505 static void virt_set_highmem_redists(Object *obj, bool value, Error **errp)
2506 {
2507 VirtMachineState *vms = VIRT_MACHINE(obj);
2508
2509 vms->highmem_redists = value;
2510 }
2511
virt_get_highmem_ecam(Object * obj,Error ** errp)2512 static bool virt_get_highmem_ecam(Object *obj, Error **errp)
2513 {
2514 VirtMachineState *vms = VIRT_MACHINE(obj);
2515
2516 return vms->highmem_ecam;
2517 }
2518
virt_set_highmem_ecam(Object * obj,bool value,Error ** errp)2519 static void virt_set_highmem_ecam(Object *obj, bool value, Error **errp)
2520 {
2521 VirtMachineState *vms = VIRT_MACHINE(obj);
2522
2523 vms->highmem_ecam = value;
2524 }
2525
virt_get_highmem_mmio(Object * obj,Error ** errp)2526 static bool virt_get_highmem_mmio(Object *obj, Error **errp)
2527 {
2528 VirtMachineState *vms = VIRT_MACHINE(obj);
2529
2530 return vms->highmem_mmio;
2531 }
2532
virt_set_highmem_mmio(Object * obj,bool value,Error ** errp)2533 static void virt_set_highmem_mmio(Object *obj, bool value, Error **errp)
2534 {
2535 VirtMachineState *vms = VIRT_MACHINE(obj);
2536
2537 vms->highmem_mmio = value;
2538 }
2539
2540
virt_get_its(Object * obj,Error ** errp)2541 static bool virt_get_its(Object *obj, Error **errp)
2542 {
2543 VirtMachineState *vms = VIRT_MACHINE(obj);
2544
2545 return vms->its;
2546 }
2547
virt_set_its(Object * obj,bool value,Error ** errp)2548 static void virt_set_its(Object *obj, bool value, Error **errp)
2549 {
2550 VirtMachineState *vms = VIRT_MACHINE(obj);
2551
2552 vms->its = value;
2553 }
2554
virt_get_dtb_randomness(Object * obj,Error ** errp)2555 static bool virt_get_dtb_randomness(Object *obj, Error **errp)
2556 {
2557 VirtMachineState *vms = VIRT_MACHINE(obj);
2558
2559 return vms->dtb_randomness;
2560 }
2561
virt_set_dtb_randomness(Object * obj,bool value,Error ** errp)2562 static void virt_set_dtb_randomness(Object *obj, bool value, Error **errp)
2563 {
2564 VirtMachineState *vms = VIRT_MACHINE(obj);
2565
2566 vms->dtb_randomness = value;
2567 }
2568
virt_get_oem_id(Object * obj,Error ** errp)2569 static char *virt_get_oem_id(Object *obj, Error **errp)
2570 {
2571 VirtMachineState *vms = VIRT_MACHINE(obj);
2572
2573 return g_strdup(vms->oem_id);
2574 }
2575
virt_set_oem_id(Object * obj,const char * value,Error ** errp)2576 static void virt_set_oem_id(Object *obj, const char *value, Error **errp)
2577 {
2578 VirtMachineState *vms = VIRT_MACHINE(obj);
2579 size_t len = strlen(value);
2580
2581 if (len > 6) {
2582 error_setg(errp,
2583 "User specified oem-id value is bigger than 6 bytes in size");
2584 return;
2585 }
2586
2587 strncpy(vms->oem_id, value, 6);
2588 }
2589
virt_get_oem_table_id(Object * obj,Error ** errp)2590 static char *virt_get_oem_table_id(Object *obj, Error **errp)
2591 {
2592 VirtMachineState *vms = VIRT_MACHINE(obj);
2593
2594 return g_strdup(vms->oem_table_id);
2595 }
2596
virt_set_oem_table_id(Object * obj,const char * value,Error ** errp)2597 static void virt_set_oem_table_id(Object *obj, const char *value,
2598 Error **errp)
2599 {
2600 VirtMachineState *vms = VIRT_MACHINE(obj);
2601 size_t len = strlen(value);
2602
2603 if (len > 8) {
2604 error_setg(errp,
2605 "User specified oem-table-id value is bigger than 8 bytes in size");
2606 return;
2607 }
2608 strncpy(vms->oem_table_id, value, 8);
2609 }
2610
2611
virt_is_acpi_enabled(VirtMachineState * vms)2612 bool virt_is_acpi_enabled(VirtMachineState *vms)
2613 {
2614 if (vms->acpi == ON_OFF_AUTO_OFF) {
2615 return false;
2616 }
2617 return true;
2618 }
2619
virt_get_acpi(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)2620 static void virt_get_acpi(Object *obj, Visitor *v, const char *name,
2621 void *opaque, Error **errp)
2622 {
2623 VirtMachineState *vms = VIRT_MACHINE(obj);
2624 OnOffAuto acpi = vms->acpi;
2625
2626 visit_type_OnOffAuto(v, name, &acpi, errp);
2627 }
2628
virt_set_acpi(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)2629 static void virt_set_acpi(Object *obj, Visitor *v, const char *name,
2630 void *opaque, Error **errp)
2631 {
2632 VirtMachineState *vms = VIRT_MACHINE(obj);
2633
2634 visit_type_OnOffAuto(v, name, &vms->acpi, errp);
2635 }
2636
virt_get_ras(Object * obj,Error ** errp)2637 static bool virt_get_ras(Object *obj, Error **errp)
2638 {
2639 VirtMachineState *vms = VIRT_MACHINE(obj);
2640
2641 return vms->ras;
2642 }
2643
virt_set_ras(Object * obj,bool value,Error ** errp)2644 static void virt_set_ras(Object *obj, bool value, Error **errp)
2645 {
2646 VirtMachineState *vms = VIRT_MACHINE(obj);
2647
2648 vms->ras = value;
2649 }
2650
virt_get_mte(Object * obj,Error ** errp)2651 static bool virt_get_mte(Object *obj, Error **errp)
2652 {
2653 VirtMachineState *vms = VIRT_MACHINE(obj);
2654
2655 return vms->mte;
2656 }
2657
virt_set_mte(Object * obj,bool value,Error ** errp)2658 static void virt_set_mte(Object *obj, bool value, Error **errp)
2659 {
2660 VirtMachineState *vms = VIRT_MACHINE(obj);
2661
2662 vms->mte = value;
2663 }
2664
virt_get_gic_version(Object * obj,Error ** errp)2665 static char *virt_get_gic_version(Object *obj, Error **errp)
2666 {
2667 VirtMachineState *vms = VIRT_MACHINE(obj);
2668 const char *val;
2669
2670 switch (vms->gic_version) {
2671 case VIRT_GIC_VERSION_4:
2672 val = "4";
2673 break;
2674 case VIRT_GIC_VERSION_3:
2675 val = "3";
2676 break;
2677 default:
2678 val = "2";
2679 break;
2680 }
2681 return g_strdup(val);
2682 }
2683
virt_set_gic_version(Object * obj,const char * value,Error ** errp)2684 static void virt_set_gic_version(Object *obj, const char *value, Error **errp)
2685 {
2686 VirtMachineState *vms = VIRT_MACHINE(obj);
2687
2688 if (!strcmp(value, "4")) {
2689 vms->gic_version = VIRT_GIC_VERSION_4;
2690 } else if (!strcmp(value, "3")) {
2691 vms->gic_version = VIRT_GIC_VERSION_3;
2692 } else if (!strcmp(value, "2")) {
2693 vms->gic_version = VIRT_GIC_VERSION_2;
2694 } else if (!strcmp(value, "host")) {
2695 vms->gic_version = VIRT_GIC_VERSION_HOST; /* Will probe later */
2696 } else if (!strcmp(value, "max")) {
2697 vms->gic_version = VIRT_GIC_VERSION_MAX; /* Will probe later */
2698 } else {
2699 error_setg(errp, "Invalid gic-version value");
2700 error_append_hint(errp, "Valid values are 3, 2, host, max.\n");
2701 }
2702 }
2703
virt_get_iommu(Object * obj,Error ** errp)2704 static char *virt_get_iommu(Object *obj, Error **errp)
2705 {
2706 VirtMachineState *vms = VIRT_MACHINE(obj);
2707
2708 switch (vms->iommu) {
2709 case VIRT_IOMMU_NONE:
2710 return g_strdup("none");
2711 case VIRT_IOMMU_SMMUV3:
2712 return g_strdup("smmuv3");
2713 default:
2714 g_assert_not_reached();
2715 }
2716 }
2717
virt_set_iommu(Object * obj,const char * value,Error ** errp)2718 static void virt_set_iommu(Object *obj, const char *value, Error **errp)
2719 {
2720 VirtMachineState *vms = VIRT_MACHINE(obj);
2721
2722 if (!strcmp(value, "smmuv3")) {
2723 vms->iommu = VIRT_IOMMU_SMMUV3;
2724 } else if (!strcmp(value, "none")) {
2725 vms->iommu = VIRT_IOMMU_NONE;
2726 } else {
2727 error_setg(errp, "Invalid iommu value");
2728 error_append_hint(errp, "Valid values are none, smmuv3.\n");
2729 }
2730 }
2731
virt_get_default_bus_bypass_iommu(Object * obj,Error ** errp)2732 static bool virt_get_default_bus_bypass_iommu(Object *obj, Error **errp)
2733 {
2734 VirtMachineState *vms = VIRT_MACHINE(obj);
2735
2736 return vms->default_bus_bypass_iommu;
2737 }
2738
virt_set_default_bus_bypass_iommu(Object * obj,bool value,Error ** errp)2739 static void virt_set_default_bus_bypass_iommu(Object *obj, bool value,
2740 Error **errp)
2741 {
2742 VirtMachineState *vms = VIRT_MACHINE(obj);
2743
2744 vms->default_bus_bypass_iommu = value;
2745 }
2746
2747 static CpuInstanceProperties
virt_cpu_index_to_props(MachineState * ms,unsigned cpu_index)2748 virt_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
2749 {
2750 MachineClass *mc = MACHINE_GET_CLASS(ms);
2751 const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
2752
2753 assert(cpu_index < possible_cpus->len);
2754 return possible_cpus->cpus[cpu_index].props;
2755 }
2756
virt_get_default_cpu_node_id(const MachineState * ms,int idx)2757 static int64_t virt_get_default_cpu_node_id(const MachineState *ms, int idx)
2758 {
2759 int64_t socket_id = ms->possible_cpus->cpus[idx].props.socket_id;
2760
2761 return socket_id % ms->numa_state->num_nodes;
2762 }
2763
virt_possible_cpu_arch_ids(MachineState * ms)2764 static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms)
2765 {
2766 int n;
2767 unsigned int max_cpus = ms->smp.max_cpus;
2768 VirtMachineState *vms = VIRT_MACHINE(ms);
2769 MachineClass *mc = MACHINE_GET_CLASS(vms);
2770
2771 if (ms->possible_cpus) {
2772 assert(ms->possible_cpus->len == max_cpus);
2773 return ms->possible_cpus;
2774 }
2775
2776 ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
2777 sizeof(CPUArchId) * max_cpus);
2778 ms->possible_cpus->len = max_cpus;
2779 for (n = 0; n < ms->possible_cpus->len; n++) {
2780 ms->possible_cpus->cpus[n].type = ms->cpu_type;
2781 ms->possible_cpus->cpus[n].arch_id =
2782 virt_cpu_mp_affinity(vms, n);
2783
2784 assert(!mc->smp_props.dies_supported);
2785 ms->possible_cpus->cpus[n].props.has_socket_id = true;
2786 ms->possible_cpus->cpus[n].props.socket_id =
2787 n / (ms->smp.clusters * ms->smp.cores * ms->smp.threads);
2788 ms->possible_cpus->cpus[n].props.has_cluster_id = true;
2789 ms->possible_cpus->cpus[n].props.cluster_id =
2790 (n / (ms->smp.cores * ms->smp.threads)) % ms->smp.clusters;
2791 ms->possible_cpus->cpus[n].props.has_core_id = true;
2792 ms->possible_cpus->cpus[n].props.core_id =
2793 (n / ms->smp.threads) % ms->smp.cores;
2794 ms->possible_cpus->cpus[n].props.has_thread_id = true;
2795 ms->possible_cpus->cpus[n].props.thread_id =
2796 n % ms->smp.threads;
2797 }
2798 return ms->possible_cpus;
2799 }
2800
virt_memory_pre_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2801 static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
2802 Error **errp)
2803 {
2804 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2805 const MachineState *ms = MACHINE(hotplug_dev);
2806 const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
2807
2808 if (!vms->acpi_dev) {
2809 error_setg(errp,
2810 "memory hotplug is not enabled: missing acpi-ged device");
2811 return;
2812 }
2813
2814 if (vms->mte) {
2815 error_setg(errp, "memory hotplug is not enabled: MTE is enabled");
2816 return;
2817 }
2818
2819 if (is_nvdimm && !ms->nvdimms_state->is_enabled) {
2820 error_setg(errp, "nvdimm is not enabled: add 'nvdimm=on' to '-M'");
2821 return;
2822 }
2823
2824 pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), errp);
2825 }
2826
virt_memory_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2827 static void virt_memory_plug(HotplugHandler *hotplug_dev,
2828 DeviceState *dev, Error **errp)
2829 {
2830 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2831 MachineState *ms = MACHINE(hotplug_dev);
2832 bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
2833
2834 pc_dimm_plug(PC_DIMM(dev), MACHINE(vms));
2835
2836 if (is_nvdimm) {
2837 nvdimm_plug(ms->nvdimms_state);
2838 }
2839
2840 hotplug_handler_plug(HOTPLUG_HANDLER(vms->acpi_dev),
2841 dev, &error_abort);
2842 }
2843
virt_machine_device_pre_plug_cb(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2844 static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
2845 DeviceState *dev, Error **errp)
2846 {
2847 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2848
2849 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
2850 virt_memory_pre_plug(hotplug_dev, dev, errp);
2851 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
2852 virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp);
2853 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
2854 hwaddr db_start = 0, db_end = 0;
2855 QList *reserved_regions;
2856 char *resv_prop_str;
2857
2858 if (vms->iommu != VIRT_IOMMU_NONE) {
2859 error_setg(errp, "virt machine does not support multiple IOMMUs");
2860 return;
2861 }
2862
2863 switch (vms->msi_controller) {
2864 case VIRT_MSI_CTRL_NONE:
2865 return;
2866 case VIRT_MSI_CTRL_ITS:
2867 /* GITS_TRANSLATER page */
2868 db_start = base_memmap[VIRT_GIC_ITS].base + 0x10000;
2869 db_end = base_memmap[VIRT_GIC_ITS].base +
2870 base_memmap[VIRT_GIC_ITS].size - 1;
2871 break;
2872 case VIRT_MSI_CTRL_GICV2M:
2873 /* MSI_SETSPI_NS page */
2874 db_start = base_memmap[VIRT_GIC_V2M].base;
2875 db_end = db_start + base_memmap[VIRT_GIC_V2M].size - 1;
2876 break;
2877 }
2878 resv_prop_str = g_strdup_printf("0x%"PRIx64":0x%"PRIx64":%u",
2879 db_start, db_end,
2880 VIRTIO_IOMMU_RESV_MEM_T_MSI);
2881
2882 reserved_regions = qlist_new();
2883 qlist_append_str(reserved_regions, resv_prop_str);
2884 qdev_prop_set_array(dev, "reserved-regions", reserved_regions);
2885 g_free(resv_prop_str);
2886 }
2887 }
2888
virt_machine_device_plug_cb(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2889 static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev,
2890 DeviceState *dev, Error **errp)
2891 {
2892 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2893
2894 if (vms->platform_bus_dev) {
2895 MachineClass *mc = MACHINE_GET_CLASS(vms);
2896
2897 if (device_is_dynamic_sysbus(mc, dev)) {
2898 platform_bus_link_device(PLATFORM_BUS_DEVICE(vms->platform_bus_dev),
2899 SYS_BUS_DEVICE(dev));
2900 }
2901 }
2902
2903 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
2904 virt_memory_plug(hotplug_dev, dev, errp);
2905 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
2906 virtio_md_pci_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp);
2907 }
2908
2909 if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
2910 PCIDevice *pdev = PCI_DEVICE(dev);
2911
2912 vms->iommu = VIRT_IOMMU_VIRTIO;
2913 vms->virtio_iommu_bdf = pci_get_bdf(pdev);
2914 create_virtio_iommu_dt_bindings(vms);
2915 }
2916 }
2917
virt_dimm_unplug_request(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2918 static void virt_dimm_unplug_request(HotplugHandler *hotplug_dev,
2919 DeviceState *dev, Error **errp)
2920 {
2921 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2922
2923 if (!vms->acpi_dev) {
2924 error_setg(errp,
2925 "memory hotplug is not enabled: missing acpi-ged device");
2926 return;
2927 }
2928
2929 if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
2930 error_setg(errp, "nvdimm device hot unplug is not supported yet.");
2931 return;
2932 }
2933
2934 hotplug_handler_unplug_request(HOTPLUG_HANDLER(vms->acpi_dev), dev,
2935 errp);
2936 }
2937
virt_dimm_unplug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2938 static void virt_dimm_unplug(HotplugHandler *hotplug_dev,
2939 DeviceState *dev, Error **errp)
2940 {
2941 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
2942 Error *local_err = NULL;
2943
2944 hotplug_handler_unplug(HOTPLUG_HANDLER(vms->acpi_dev), dev, &local_err);
2945 if (local_err) {
2946 goto out;
2947 }
2948
2949 pc_dimm_unplug(PC_DIMM(dev), MACHINE(vms));
2950 qdev_unrealize(dev);
2951
2952 out:
2953 error_propagate(errp, local_err);
2954 }
2955
virt_machine_device_unplug_request_cb(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2956 static void virt_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
2957 DeviceState *dev, Error **errp)
2958 {
2959 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
2960 virt_dimm_unplug_request(hotplug_dev, dev, errp);
2961 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
2962 virtio_md_pci_unplug_request(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev),
2963 errp);
2964 } else {
2965 error_setg(errp, "device unplug request for unsupported device"
2966 " type: %s", object_get_typename(OBJECT(dev)));
2967 }
2968 }
2969
virt_machine_device_unplug_cb(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)2970 static void virt_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
2971 DeviceState *dev, Error **errp)
2972 {
2973 if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
2974 virt_dimm_unplug(hotplug_dev, dev, errp);
2975 } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
2976 virtio_md_pci_unplug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp);
2977 } else {
2978 error_setg(errp, "virt: device unplug for unsupported device"
2979 " type: %s", object_get_typename(OBJECT(dev)));
2980 }
2981 }
2982
virt_machine_get_hotplug_handler(MachineState * machine,DeviceState * dev)2983 static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
2984 DeviceState *dev)
2985 {
2986 MachineClass *mc = MACHINE_GET_CLASS(machine);
2987
2988 if (device_is_dynamic_sysbus(mc, dev) ||
2989 object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
2990 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI) ||
2991 object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
2992 return HOTPLUG_HANDLER(machine);
2993 }
2994 return NULL;
2995 }
2996
2997 /*
2998 * for arm64 kvm_type [7-0] encodes the requested number of bits
2999 * in the IPA address space
3000 */
virt_kvm_type(MachineState * ms,const char * type_str)3001 static int virt_kvm_type(MachineState *ms, const char *type_str)
3002 {
3003 VirtMachineState *vms = VIRT_MACHINE(ms);
3004 int max_vm_pa_size, requested_pa_size;
3005 bool fixed_ipa;
3006
3007 max_vm_pa_size = kvm_arm_get_max_vm_ipa_size(ms, &fixed_ipa);
3008
3009 /* we freeze the memory map to compute the highest gpa */
3010 virt_set_memmap(vms, max_vm_pa_size);
3011
3012 requested_pa_size = 64 - clz64(vms->highest_gpa);
3013
3014 /*
3015 * KVM requires the IPA size to be at least 32 bits.
3016 */
3017 if (requested_pa_size < 32) {
3018 requested_pa_size = 32;
3019 }
3020
3021 if (requested_pa_size > max_vm_pa_size) {
3022 error_report("-m and ,maxmem option values "
3023 "require an IPA range (%d bits) larger than "
3024 "the one supported by the host (%d bits)",
3025 requested_pa_size, max_vm_pa_size);
3026 return -1;
3027 }
3028 /*
3029 * We return the requested PA log size, unless KVM only supports
3030 * the implicit legacy 40b IPA setting, in which case the kvm_type
3031 * must be 0.
3032 */
3033 return fixed_ipa ? 0 : requested_pa_size;
3034 }
3035
virt_hvf_get_physical_address_range(MachineState * ms)3036 static int virt_hvf_get_physical_address_range(MachineState *ms)
3037 {
3038 VirtMachineState *vms = VIRT_MACHINE(ms);
3039
3040 int default_ipa_size = hvf_arm_get_default_ipa_bit_size();
3041 int max_ipa_size = hvf_arm_get_max_ipa_bit_size();
3042
3043 /* We freeze the memory map to compute the highest gpa */
3044 virt_set_memmap(vms, max_ipa_size);
3045
3046 int requested_ipa_size = 64 - clz64(vms->highest_gpa);
3047
3048 /*
3049 * If we're <= the default IPA size just use the default.
3050 * If we're above the default but below the maximum, round up to
3051 * the maximum. hvf_arm_get_max_ipa_bit_size() conveniently only
3052 * returns values that are valid ARM PARange values.
3053 */
3054 if (requested_ipa_size <= default_ipa_size) {
3055 requested_ipa_size = default_ipa_size;
3056 } else if (requested_ipa_size <= max_ipa_size) {
3057 requested_ipa_size = max_ipa_size;
3058 } else {
3059 error_report("-m and ,maxmem option values "
3060 "require an IPA range (%d bits) larger than "
3061 "the one supported by the host (%d bits)",
3062 requested_ipa_size, max_ipa_size);
3063 return -1;
3064 }
3065
3066 return requested_ipa_size;
3067 }
3068
virt_machine_class_init(ObjectClass * oc,void * data)3069 static void virt_machine_class_init(ObjectClass *oc, void *data)
3070 {
3071 MachineClass *mc = MACHINE_CLASS(oc);
3072 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
3073 static const char * const valid_cpu_types[] = {
3074 #ifdef CONFIG_TCG
3075 ARM_CPU_TYPE_NAME("cortex-a7"),
3076 ARM_CPU_TYPE_NAME("cortex-a15"),
3077 #ifdef TARGET_AARCH64
3078 ARM_CPU_TYPE_NAME("cortex-a35"),
3079 ARM_CPU_TYPE_NAME("cortex-a55"),
3080 ARM_CPU_TYPE_NAME("cortex-a72"),
3081 ARM_CPU_TYPE_NAME("cortex-a76"),
3082 ARM_CPU_TYPE_NAME("cortex-a710"),
3083 ARM_CPU_TYPE_NAME("a64fx"),
3084 ARM_CPU_TYPE_NAME("neoverse-n1"),
3085 ARM_CPU_TYPE_NAME("neoverse-v1"),
3086 ARM_CPU_TYPE_NAME("neoverse-n2"),
3087 #endif /* TARGET_AARCH64 */
3088 #endif /* CONFIG_TCG */
3089 #ifdef TARGET_AARCH64
3090 ARM_CPU_TYPE_NAME("cortex-a53"),
3091 ARM_CPU_TYPE_NAME("cortex-a57"),
3092 #if defined(CONFIG_KVM) || defined(CONFIG_HVF)
3093 ARM_CPU_TYPE_NAME("host"),
3094 #endif /* CONFIG_KVM || CONFIG_HVF */
3095 #endif /* TARGET_AARCH64 */
3096 ARM_CPU_TYPE_NAME("max"),
3097 NULL
3098 };
3099
3100 mc->init = machvirt_init;
3101 /* Start with max_cpus set to 512, which is the maximum supported by KVM.
3102 * The value may be reduced later when we have more information about the
3103 * configuration of the particular instance.
3104 */
3105 mc->max_cpus = 512;
3106 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_CALXEDA_XGMAC);
3107 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_AMD_XGBE);
3108 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
3109 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_PLATFORM);
3110 #ifdef CONFIG_TPM
3111 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
3112 #endif
3113 mc->block_default_type = IF_VIRTIO;
3114 mc->no_cdrom = 1;
3115 mc->pci_allow_0_address = true;
3116 /* We know we will never create a pre-ARMv7 CPU which needs 1K pages */
3117 mc->minimum_page_bits = 12;
3118 mc->possible_cpu_arch_ids = virt_possible_cpu_arch_ids;
3119 mc->cpu_index_to_instance_props = virt_cpu_index_to_props;
3120 #ifdef CONFIG_TCG
3121 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a15");
3122 #else
3123 mc->default_cpu_type = ARM_CPU_TYPE_NAME("max");
3124 #endif
3125 mc->valid_cpu_types = valid_cpu_types;
3126 mc->get_default_cpu_node_id = virt_get_default_cpu_node_id;
3127 mc->kvm_type = virt_kvm_type;
3128 mc->hvf_get_physical_address_range = virt_hvf_get_physical_address_range;
3129 assert(!mc->get_hotplug_handler);
3130 mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
3131 hc->pre_plug = virt_machine_device_pre_plug_cb;
3132 hc->plug = virt_machine_device_plug_cb;
3133 hc->unplug_request = virt_machine_device_unplug_request_cb;
3134 hc->unplug = virt_machine_device_unplug_cb;
3135 mc->nvdimm_supported = true;
3136 mc->smp_props.clusters_supported = true;
3137 mc->auto_enable_numa_with_memhp = true;
3138 mc->auto_enable_numa_with_memdev = true;
3139 /* platform instead of architectural choice */
3140 mc->cpu_cluster_has_numa_boundary = true;
3141 mc->default_ram_id = "mach-virt.ram";
3142 mc->default_nic = "virtio-net-pci";
3143
3144 object_class_property_add(oc, "acpi", "OnOffAuto",
3145 virt_get_acpi, virt_set_acpi,
3146 NULL, NULL);
3147 object_class_property_set_description(oc, "acpi",
3148 "Enable ACPI");
3149 object_class_property_add_bool(oc, "secure", virt_get_secure,
3150 virt_set_secure);
3151 object_class_property_set_description(oc, "secure",
3152 "Set on/off to enable/disable the ARM "
3153 "Security Extensions (TrustZone)");
3154
3155 object_class_property_add_bool(oc, "virtualization", virt_get_virt,
3156 virt_set_virt);
3157 object_class_property_set_description(oc, "virtualization",
3158 "Set on/off to enable/disable emulating a "
3159 "guest CPU which implements the ARM "
3160 "Virtualization Extensions");
3161
3162 object_class_property_add_bool(oc, "highmem", virt_get_highmem,
3163 virt_set_highmem);
3164 object_class_property_set_description(oc, "highmem",
3165 "Set on/off to enable/disable using "
3166 "physical address space above 32 bits");
3167
3168 object_class_property_add_bool(oc, "compact-highmem",
3169 virt_get_compact_highmem,
3170 virt_set_compact_highmem);
3171 object_class_property_set_description(oc, "compact-highmem",
3172 "Set on/off to enable/disable compact "
3173 "layout for high memory regions");
3174
3175 object_class_property_add_bool(oc, "highmem-redists",
3176 virt_get_highmem_redists,
3177 virt_set_highmem_redists);
3178 object_class_property_set_description(oc, "highmem-redists",
3179 "Set on/off to enable/disable high "
3180 "memory region for GICv3 or GICv4 "
3181 "redistributor");
3182
3183 object_class_property_add_bool(oc, "highmem-ecam",
3184 virt_get_highmem_ecam,
3185 virt_set_highmem_ecam);
3186 object_class_property_set_description(oc, "highmem-ecam",
3187 "Set on/off to enable/disable high "
3188 "memory region for PCI ECAM");
3189
3190 object_class_property_add_bool(oc, "highmem-mmio",
3191 virt_get_highmem_mmio,
3192 virt_set_highmem_mmio);
3193 object_class_property_set_description(oc, "highmem-mmio",
3194 "Set on/off to enable/disable high "
3195 "memory region for PCI MMIO");
3196
3197 object_class_property_add_str(oc, "gic-version", virt_get_gic_version,
3198 virt_set_gic_version);
3199 object_class_property_set_description(oc, "gic-version",
3200 "Set GIC version. "
3201 "Valid values are 2, 3, 4, host and max");
3202
3203 object_class_property_add_str(oc, "iommu", virt_get_iommu, virt_set_iommu);
3204 object_class_property_set_description(oc, "iommu",
3205 "Set the IOMMU type. "
3206 "Valid values are none and smmuv3");
3207
3208 object_class_property_add_bool(oc, "default-bus-bypass-iommu",
3209 virt_get_default_bus_bypass_iommu,
3210 virt_set_default_bus_bypass_iommu);
3211 object_class_property_set_description(oc, "default-bus-bypass-iommu",
3212 "Set on/off to enable/disable "
3213 "bypass_iommu for default root bus");
3214
3215 object_class_property_add_bool(oc, "ras", virt_get_ras,
3216 virt_set_ras);
3217 object_class_property_set_description(oc, "ras",
3218 "Set on/off to enable/disable reporting host memory errors "
3219 "to a KVM guest using ACPI and guest external abort exceptions");
3220
3221 object_class_property_add_bool(oc, "mte", virt_get_mte, virt_set_mte);
3222 object_class_property_set_description(oc, "mte",
3223 "Set on/off to enable/disable emulating a "
3224 "guest CPU which implements the ARM "
3225 "Memory Tagging Extension");
3226
3227 object_class_property_add_bool(oc, "its", virt_get_its,
3228 virt_set_its);
3229 object_class_property_set_description(oc, "its",
3230 "Set on/off to enable/disable "
3231 "ITS instantiation");
3232
3233 object_class_property_add_bool(oc, "dtb-randomness",
3234 virt_get_dtb_randomness,
3235 virt_set_dtb_randomness);
3236 object_class_property_set_description(oc, "dtb-randomness",
3237 "Set off to disable passing random or "
3238 "non-deterministic dtb nodes to guest");
3239
3240 object_class_property_add_bool(oc, "dtb-kaslr-seed",
3241 virt_get_dtb_randomness,
3242 virt_set_dtb_randomness);
3243 object_class_property_set_description(oc, "dtb-kaslr-seed",
3244 "Deprecated synonym of dtb-randomness");
3245
3246 object_class_property_add_str(oc, "x-oem-id",
3247 virt_get_oem_id,
3248 virt_set_oem_id);
3249 object_class_property_set_description(oc, "x-oem-id",
3250 "Override the default value of field OEMID "
3251 "in ACPI table header."
3252 "The string may be up to 6 bytes in size");
3253
3254
3255 object_class_property_add_str(oc, "x-oem-table-id",
3256 virt_get_oem_table_id,
3257 virt_set_oem_table_id);
3258 object_class_property_set_description(oc, "x-oem-table-id",
3259 "Override the default value of field OEM Table ID "
3260 "in ACPI table header."
3261 "The string may be up to 8 bytes in size");
3262
3263 }
3264
virt_instance_init(Object * obj)3265 static void virt_instance_init(Object *obj)
3266 {
3267 VirtMachineState *vms = VIRT_MACHINE(obj);
3268 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
3269
3270 /* EL3 is disabled by default on virt: this makes us consistent
3271 * between KVM and TCG for this board, and it also allows us to
3272 * boot UEFI blobs which assume no TrustZone support.
3273 */
3274 vms->secure = false;
3275
3276 /* EL2 is also disabled by default, for similar reasons */
3277 vms->virt = false;
3278
3279 /* High memory is enabled by default */
3280 vms->highmem = true;
3281 vms->highmem_compact = !vmc->no_highmem_compact;
3282 vms->gic_version = VIRT_GIC_VERSION_NOSEL;
3283
3284 vms->highmem_ecam = !vmc->no_highmem_ecam;
3285 vms->highmem_mmio = true;
3286 vms->highmem_redists = true;
3287
3288 if (vmc->no_its) {
3289 vms->its = false;
3290 } else {
3291 /* Default allows ITS instantiation */
3292 vms->its = true;
3293
3294 if (vmc->no_tcg_its) {
3295 vms->tcg_its = false;
3296 } else {
3297 vms->tcg_its = true;
3298 }
3299 }
3300
3301 /* Default disallows iommu instantiation */
3302 vms->iommu = VIRT_IOMMU_NONE;
3303
3304 /* The default root bus is attached to iommu by default */
3305 vms->default_bus_bypass_iommu = false;
3306
3307 /* Default disallows RAS instantiation */
3308 vms->ras = false;
3309
3310 /* MTE is disabled by default. */
3311 vms->mte = false;
3312
3313 /* Supply kaslr-seed and rng-seed by default */
3314 vms->dtb_randomness = true;
3315
3316 vms->irqmap = a15irqmap;
3317
3318 virt_flash_create(vms);
3319
3320 vms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
3321 vms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
3322 }
3323
3324 static const TypeInfo virt_machine_info = {
3325 .name = TYPE_VIRT_MACHINE,
3326 .parent = TYPE_MACHINE,
3327 .abstract = true,
3328 .instance_size = sizeof(VirtMachineState),
3329 .class_size = sizeof(VirtMachineClass),
3330 .class_init = virt_machine_class_init,
3331 .instance_init = virt_instance_init,
3332 .interfaces = (InterfaceInfo[]) {
3333 { TYPE_HOTPLUG_HANDLER },
3334 { }
3335 },
3336 };
3337
machvirt_machine_init(void)3338 static void machvirt_machine_init(void)
3339 {
3340 type_register_static(&virt_machine_info);
3341 }
3342 type_init(machvirt_machine_init);
3343
virt_machine_9_2_options(MachineClass * mc)3344 static void virt_machine_9_2_options(MachineClass *mc)
3345 {
3346 }
3347 DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
3348
virt_machine_9_1_options(MachineClass * mc)3349 static void virt_machine_9_1_options(MachineClass *mc)
3350 {
3351 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3352
3353 virt_machine_9_2_options(mc);
3354 compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
3355 /* 9.1 and earlier have only a stage-1 SMMU, not a nested s1+2 one */
3356 vmc->no_nested_smmu = true;
3357 }
3358 DEFINE_VIRT_MACHINE(9, 1)
3359
virt_machine_9_0_options(MachineClass * mc)3360 static void virt_machine_9_0_options(MachineClass *mc)
3361 {
3362 virt_machine_9_1_options(mc);
3363 mc->smbios_memory_device_size = 16 * GiB;
3364 compat_props_add(mc->compat_props, hw_compat_9_0, hw_compat_9_0_len);
3365 }
3366 DEFINE_VIRT_MACHINE(9, 0)
3367
virt_machine_8_2_options(MachineClass * mc)3368 static void virt_machine_8_2_options(MachineClass *mc)
3369 {
3370 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3371
3372 virt_machine_9_0_options(mc);
3373 compat_props_add(mc->compat_props, hw_compat_8_2, hw_compat_8_2_len);
3374 /*
3375 * Don't expose NS_EL2_VIRT timer IRQ in DTB on ACPI on 8.2 and
3376 * earlier machines. (Exposing it tickles a bug in older EDK2
3377 * guest BIOS binaries.)
3378 */
3379 vmc->no_ns_el2_virt_timer_irq = true;
3380 }
3381 DEFINE_VIRT_MACHINE(8, 2)
3382
virt_machine_8_1_options(MachineClass * mc)3383 static void virt_machine_8_1_options(MachineClass *mc)
3384 {
3385 virt_machine_8_2_options(mc);
3386 compat_props_add(mc->compat_props, hw_compat_8_1, hw_compat_8_1_len);
3387 }
3388 DEFINE_VIRT_MACHINE(8, 1)
3389
virt_machine_8_0_options(MachineClass * mc)3390 static void virt_machine_8_0_options(MachineClass *mc)
3391 {
3392 virt_machine_8_1_options(mc);
3393 compat_props_add(mc->compat_props, hw_compat_8_0, hw_compat_8_0_len);
3394 }
3395 DEFINE_VIRT_MACHINE(8, 0)
3396
virt_machine_7_2_options(MachineClass * mc)3397 static void virt_machine_7_2_options(MachineClass *mc)
3398 {
3399 virt_machine_8_0_options(mc);
3400 compat_props_add(mc->compat_props, hw_compat_7_2, hw_compat_7_2_len);
3401 }
3402 DEFINE_VIRT_MACHINE(7, 2)
3403
virt_machine_7_1_options(MachineClass * mc)3404 static void virt_machine_7_1_options(MachineClass *mc)
3405 {
3406 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3407
3408 virt_machine_7_2_options(mc);
3409 compat_props_add(mc->compat_props, hw_compat_7_1, hw_compat_7_1_len);
3410 /* Compact layout for high memory regions was introduced with 7.2 */
3411 vmc->no_highmem_compact = true;
3412 }
3413 DEFINE_VIRT_MACHINE(7, 1)
3414
virt_machine_7_0_options(MachineClass * mc)3415 static void virt_machine_7_0_options(MachineClass *mc)
3416 {
3417 virt_machine_7_1_options(mc);
3418 compat_props_add(mc->compat_props, hw_compat_7_0, hw_compat_7_0_len);
3419 }
3420 DEFINE_VIRT_MACHINE(7, 0)
3421
virt_machine_6_2_options(MachineClass * mc)3422 static void virt_machine_6_2_options(MachineClass *mc)
3423 {
3424 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3425
3426 virt_machine_7_0_options(mc);
3427 compat_props_add(mc->compat_props, hw_compat_6_2, hw_compat_6_2_len);
3428 vmc->no_tcg_lpa2 = true;
3429 }
3430 DEFINE_VIRT_MACHINE(6, 2)
3431
virt_machine_6_1_options(MachineClass * mc)3432 static void virt_machine_6_1_options(MachineClass *mc)
3433 {
3434 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3435
3436 virt_machine_6_2_options(mc);
3437 compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len);
3438 mc->smp_props.prefer_sockets = true;
3439 vmc->no_cpu_topology = true;
3440
3441 /* qemu ITS was introduced with 6.2 */
3442 vmc->no_tcg_its = true;
3443 }
3444 DEFINE_VIRT_MACHINE(6, 1)
3445
virt_machine_6_0_options(MachineClass * mc)3446 static void virt_machine_6_0_options(MachineClass *mc)
3447 {
3448 virt_machine_6_1_options(mc);
3449 compat_props_add(mc->compat_props, hw_compat_6_0, hw_compat_6_0_len);
3450 }
3451 DEFINE_VIRT_MACHINE(6, 0)
3452
virt_machine_5_2_options(MachineClass * mc)3453 static void virt_machine_5_2_options(MachineClass *mc)
3454 {
3455 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3456
3457 virt_machine_6_0_options(mc);
3458 compat_props_add(mc->compat_props, hw_compat_5_2, hw_compat_5_2_len);
3459 vmc->no_secure_gpio = true;
3460 }
3461 DEFINE_VIRT_MACHINE(5, 2)
3462
virt_machine_5_1_options(MachineClass * mc)3463 static void virt_machine_5_1_options(MachineClass *mc)
3464 {
3465 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3466
3467 virt_machine_5_2_options(mc);
3468 compat_props_add(mc->compat_props, hw_compat_5_1, hw_compat_5_1_len);
3469 vmc->no_kvm_steal_time = true;
3470 }
3471 DEFINE_VIRT_MACHINE(5, 1)
3472
virt_machine_5_0_options(MachineClass * mc)3473 static void virt_machine_5_0_options(MachineClass *mc)
3474 {
3475 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3476
3477 virt_machine_5_1_options(mc);
3478 compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len);
3479 mc->numa_mem_supported = true;
3480 vmc->acpi_expose_flash = true;
3481 mc->auto_enable_numa_with_memdev = false;
3482 }
3483 DEFINE_VIRT_MACHINE(5, 0)
3484
virt_machine_4_2_options(MachineClass * mc)3485 static void virt_machine_4_2_options(MachineClass *mc)
3486 {
3487 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3488
3489 virt_machine_5_0_options(mc);
3490 compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len);
3491 vmc->kvm_no_adjvtime = true;
3492 }
3493 DEFINE_VIRT_MACHINE(4, 2)
3494
virt_machine_4_1_options(MachineClass * mc)3495 static void virt_machine_4_1_options(MachineClass *mc)
3496 {
3497 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3498
3499 virt_machine_4_2_options(mc);
3500 compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len);
3501 vmc->no_ged = true;
3502 mc->auto_enable_numa_with_memhp = false;
3503 }
3504 DEFINE_VIRT_MACHINE(4, 1)
3505
virt_machine_4_0_options(MachineClass * mc)3506 static void virt_machine_4_0_options(MachineClass *mc)
3507 {
3508 virt_machine_4_1_options(mc);
3509 compat_props_add(mc->compat_props, hw_compat_4_0, hw_compat_4_0_len);
3510 }
3511 DEFINE_VIRT_MACHINE(4, 0)
3512
virt_machine_3_1_options(MachineClass * mc)3513 static void virt_machine_3_1_options(MachineClass *mc)
3514 {
3515 virt_machine_4_0_options(mc);
3516 compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len);
3517 }
3518 DEFINE_VIRT_MACHINE(3, 1)
3519
virt_machine_3_0_options(MachineClass * mc)3520 static void virt_machine_3_0_options(MachineClass *mc)
3521 {
3522 virt_machine_3_1_options(mc);
3523 compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len);
3524 }
3525 DEFINE_VIRT_MACHINE(3, 0)
3526
virt_machine_2_12_options(MachineClass * mc)3527 static void virt_machine_2_12_options(MachineClass *mc)
3528 {
3529 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3530
3531 virt_machine_3_0_options(mc);
3532 compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len);
3533 vmc->no_highmem_ecam = true;
3534 mc->max_cpus = 255;
3535 }
3536 DEFINE_VIRT_MACHINE(2, 12)
3537
virt_machine_2_11_options(MachineClass * mc)3538 static void virt_machine_2_11_options(MachineClass *mc)
3539 {
3540 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3541
3542 virt_machine_2_12_options(mc);
3543 compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len);
3544 vmc->smbios_old_sys_ver = true;
3545 }
3546 DEFINE_VIRT_MACHINE(2, 11)
3547
virt_machine_2_10_options(MachineClass * mc)3548 static void virt_machine_2_10_options(MachineClass *mc)
3549 {
3550 virt_machine_2_11_options(mc);
3551 compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len);
3552 /* before 2.11 we never faulted accesses to bad addresses */
3553 mc->ignore_memory_transaction_failures = true;
3554 }
3555 DEFINE_VIRT_MACHINE(2, 10)
3556
virt_machine_2_9_options(MachineClass * mc)3557 static void virt_machine_2_9_options(MachineClass *mc)
3558 {
3559 virt_machine_2_10_options(mc);
3560 compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len);
3561 }
3562 DEFINE_VIRT_MACHINE(2, 9)
3563
virt_machine_2_8_options(MachineClass * mc)3564 static void virt_machine_2_8_options(MachineClass *mc)
3565 {
3566 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3567
3568 virt_machine_2_9_options(mc);
3569 compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len);
3570 /* For 2.8 and earlier we falsely claimed in the DT that
3571 * our timers were edge-triggered, not level-triggered.
3572 */
3573 vmc->claim_edge_triggered_timers = true;
3574 }
3575 DEFINE_VIRT_MACHINE(2, 8)
3576
virt_machine_2_7_options(MachineClass * mc)3577 static void virt_machine_2_7_options(MachineClass *mc)
3578 {
3579 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3580
3581 virt_machine_2_8_options(mc);
3582 compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len);
3583 /* ITS was introduced with 2.8 */
3584 vmc->no_its = true;
3585 /* Stick with 1K pages for migration compatibility */
3586 mc->minimum_page_bits = 0;
3587 }
3588 DEFINE_VIRT_MACHINE(2, 7)
3589
virt_machine_2_6_options(MachineClass * mc)3590 static void virt_machine_2_6_options(MachineClass *mc)
3591 {
3592 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
3593
3594 virt_machine_2_7_options(mc);
3595 compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len);
3596 vmc->disallow_affinity_adjustment = true;
3597 /* Disable PMU for 2.6 as PMU support was first introduced in 2.7 */
3598 vmc->no_pmu = true;
3599 }
3600 DEFINE_VIRT_MACHINE(2, 6)
3601