2 * ARM mach-virt emulation
4 * Copyright (c) 2013 Linaro Limited
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.
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
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/>.
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.
31 #include "qemu/osdep.h"
32 #include "qapi/error.h"
33 #include "hw/sysbus.h"
34 #include "hw/arm/arm.h"
35 #include "hw/arm/primecell.h"
36 #include "hw/arm/virt.h"
37 #include "hw/devices.h"
39 #include "sysemu/block-backend.h"
40 #include "sysemu/device_tree.h"
41 #include "sysemu/numa.h"
42 #include "sysemu/sysemu.h"
43 #include "sysemu/kvm.h"
44 #include "hw/boards.h"
45 #include "hw/compat.h"
46 #include "hw/loader.h"
47 #include "exec/address-spaces.h"
48 #include "qemu/bitops.h"
49 #include "qemu/error-report.h"
50 #include "hw/pci-host/gpex.h"
51 #include "hw/arm/virt-acpi-build.h"
52 #include "hw/arm/sysbus-fdt.h"
53 #include "hw/platform-bus.h"
54 #include "hw/arm/fdt.h"
55 #include "hw/intc/arm_gic.h"
56 #include "hw/intc/arm_gicv3_common.h"
58 #include "hw/smbios/smbios.h"
59 #include "qapi/visitor.h"
60 #include "standard-headers/linux/input.h"
62 /* Number of external interrupt lines to configure the GIC with */
65 #define PLATFORM_BUS_NUM_IRQS 64
67 static ARMPlatformBusSystemParams platform_bus_params;
69 typedef struct VirtBoardInfo {
70 struct arm_boot_info bootinfo;
71 const char *cpu_model;
72 const MemMapEntry *memmap;
77 uint32_t clock_phandle;
85 VirtBoardInfo *daughterboard;
86 bool disallow_affinity_adjustment;
96 #define TYPE_VIRT_MACHINE MACHINE_TYPE_NAME("virt")
97 #define VIRT_MACHINE(obj) \
98 OBJECT_CHECK(VirtMachineState, (obj), TYPE_VIRT_MACHINE)
99 #define VIRT_MACHINE_GET_CLASS(obj) \
100 OBJECT_GET_CLASS(VirtMachineClass, obj, TYPE_VIRT_MACHINE)
101 #define VIRT_MACHINE_CLASS(klass) \
102 OBJECT_CLASS_CHECK(VirtMachineClass, klass, TYPE_VIRT_MACHINE)
105 #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
106 static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
109 MachineClass *mc = MACHINE_CLASS(oc); \
110 virt_machine_##major##_##minor##_options(mc); \
111 mc->desc = "QEMU " # major "." # minor " ARM Virtual Machine"; \
113 mc->alias = "virt"; \
116 static const TypeInfo machvirt_##major##_##minor##_info = { \
117 .name = MACHINE_TYPE_NAME("virt-" # major "." # minor), \
118 .parent = TYPE_VIRT_MACHINE, \
119 .instance_init = virt_##major##_##minor##_instance_init, \
120 .class_init = virt_##major##_##minor##_class_init, \
122 static void machvirt_machine_##major##_##minor##_init(void) \
124 type_register_static(&machvirt_##major##_##minor##_info); \
126 type_init(machvirt_machine_##major##_##minor##_init);
128 #define DEFINE_VIRT_MACHINE_AS_LATEST(major, minor) \
129 DEFINE_VIRT_MACHINE_LATEST(major, minor, true)
130 #define DEFINE_VIRT_MACHINE(major, minor) \
131 DEFINE_VIRT_MACHINE_LATEST(major, minor, false)
134 /* RAM limit in GB. Since VIRT_MEM starts at the 1GB mark, this means
135 * RAM can go up to the 256GB mark, leaving 256GB of the physical
136 * address space unallocated and free for future use between 256G and 512G.
137 * If we need to provide more RAM to VMs in the future then we need to:
138 * * allocate a second bank of RAM starting at 2TB and working up
139 * * fix the DT and ACPI table generation code in QEMU to correctly
140 * report two split lumps of RAM to the guest
141 * * fix KVM in the host kernel to allow guests with >40 bit address spaces
142 * (We don't want to fill all the way up to 512GB with RAM because
143 * we might want it for non-RAM purposes later. Conversely it seems
144 * reasonable to assume that anybody configuring a VM with a quarter
145 * of a terabyte of RAM will be doing it on a host with more than a
146 * terabyte of physical address space.)
148 #define RAMLIMIT_GB 255
149 #define RAMLIMIT_BYTES (RAMLIMIT_GB * 1024ULL * 1024 * 1024)
151 /* Addresses and sizes of our components.
152 * 0..128MB is space for a flash device so we can run bootrom code such as UEFI.
153 * 128MB..256MB is used for miscellaneous device I/O.
154 * 256MB..1GB is reserved for possible future PCI support (ie where the
155 * PCI memory window will go if we add a PCI host controller).
156 * 1GB and up is RAM (which may happily spill over into the
157 * high memory region beyond 4GB).
158 * This represents a compromise between how much RAM can be given to
159 * a 32 bit VM and leaving space for expansion and in particular for PCI.
160 * Note that devices should generally be placed at multiples of 0x10000,
161 * to accommodate guests using 64K pages.
163 static const MemMapEntry a15memmap[] = {
164 /* Space up to 0x8000000 is reserved for a boot ROM */
165 [VIRT_FLASH] = { 0, 0x08000000 },
166 [VIRT_CPUPERIPHS] = { 0x08000000, 0x00020000 },
167 /* GIC distributor and CPU interfaces sit inside the CPU peripheral space */
168 [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 },
169 [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 },
170 [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 },
171 /* The space in between here is reserved for GICv3 CPU/vCPU/HYP */
172 [VIRT_GIC_ITS] = { 0x08080000, 0x00020000 },
173 /* This redistributor space allows up to 2*64kB*123 CPUs */
174 [VIRT_GIC_REDIST] = { 0x080A0000, 0x00F60000 },
175 [VIRT_UART] = { 0x09000000, 0x00001000 },
176 [VIRT_RTC] = { 0x09010000, 0x00001000 },
177 [VIRT_FW_CFG] = { 0x09020000, 0x00000018 },
178 [VIRT_GPIO] = { 0x09030000, 0x00001000 },
179 [VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
180 [VIRT_MMIO] = { 0x0a000000, 0x00000200 },
181 /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
182 [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
183 [VIRT_SECURE_MEM] = { 0x0e000000, 0x01000000 },
184 [VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 },
185 [VIRT_PCIE_PIO] = { 0x3eff0000, 0x00010000 },
186 [VIRT_PCIE_ECAM] = { 0x3f000000, 0x01000000 },
187 [VIRT_MEM] = { 0x40000000, RAMLIMIT_BYTES },
188 /* Second PCIe window, 512GB wide at the 512GB boundary */
189 [VIRT_PCIE_MMIO_HIGH] = { 0x8000000000ULL, 0x8000000000ULL },
192 static const int a15irqmap[] = {
195 [VIRT_PCIE] = 3, /* ... to 6 */
197 [VIRT_SECURE_UART] = 8,
198 [VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
199 [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
200 [VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */
203 static VirtBoardInfo machines[] = {
205 .cpu_model = "cortex-a15",
210 .cpu_model = "cortex-a53",
215 .cpu_model = "cortex-a57",
226 static VirtBoardInfo *find_machine_info(const char *cpu)
230 for (i = 0; i < ARRAY_SIZE(machines); i++) {
231 if (strcmp(cpu, machines[i].cpu_model) == 0) {
238 static void create_fdt(VirtBoardInfo *vbi)
240 void *fdt = create_device_tree(&vbi->fdt_size);
243 error_report("create_device_tree() failed");
250 qemu_fdt_setprop_string(fdt, "/", "compatible", "linux,dummy-virt");
251 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
252 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
255 * /chosen and /memory nodes must exist for load_dtb
256 * to fill in necessary properties later
258 qemu_fdt_add_subnode(fdt, "/chosen");
259 qemu_fdt_add_subnode(fdt, "/memory");
260 qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory");
262 /* Clock node, for the benefit of the UART. The kernel device tree
263 * binding documentation claims the PL011 node clock properties are
264 * optional but in practice if you omit them the kernel refuses to
265 * probe for the device.
267 vbi->clock_phandle = qemu_fdt_alloc_phandle(fdt);
268 qemu_fdt_add_subnode(fdt, "/apb-pclk");
269 qemu_fdt_setprop_string(fdt, "/apb-pclk", "compatible", "fixed-clock");
270 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "#clock-cells", 0x0);
271 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "clock-frequency", 24000000);
272 qemu_fdt_setprop_string(fdt, "/apb-pclk", "clock-output-names",
274 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "phandle", vbi->clock_phandle);
278 static void fdt_add_psci_node(const VirtBoardInfo *vbi)
280 uint32_t cpu_suspend_fn;
284 void *fdt = vbi->fdt;
285 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0));
287 if (!vbi->using_psci) {
291 qemu_fdt_add_subnode(fdt, "/psci");
292 if (armcpu->psci_version == 2) {
293 const char comp[] = "arm,psci-0.2\0arm,psci";
294 qemu_fdt_setprop(fdt, "/psci", "compatible", comp, sizeof(comp));
296 cpu_off_fn = QEMU_PSCI_0_2_FN_CPU_OFF;
297 if (arm_feature(&armcpu->env, ARM_FEATURE_AARCH64)) {
298 cpu_suspend_fn = QEMU_PSCI_0_2_FN64_CPU_SUSPEND;
299 cpu_on_fn = QEMU_PSCI_0_2_FN64_CPU_ON;
300 migrate_fn = QEMU_PSCI_0_2_FN64_MIGRATE;
302 cpu_suspend_fn = QEMU_PSCI_0_2_FN_CPU_SUSPEND;
303 cpu_on_fn = QEMU_PSCI_0_2_FN_CPU_ON;
304 migrate_fn = QEMU_PSCI_0_2_FN_MIGRATE;
307 qemu_fdt_setprop_string(fdt, "/psci", "compatible", "arm,psci");
309 cpu_suspend_fn = QEMU_PSCI_0_1_FN_CPU_SUSPEND;
310 cpu_off_fn = QEMU_PSCI_0_1_FN_CPU_OFF;
311 cpu_on_fn = QEMU_PSCI_0_1_FN_CPU_ON;
312 migrate_fn = QEMU_PSCI_0_1_FN_MIGRATE;
315 /* We adopt the PSCI spec's nomenclature, and use 'conduit' to refer
316 * to the instruction that should be used to invoke PSCI functions.
317 * However, the device tree binding uses 'method' instead, so that is
318 * what we should use here.
320 qemu_fdt_setprop_string(fdt, "/psci", "method", "hvc");
322 qemu_fdt_setprop_cell(fdt, "/psci", "cpu_suspend", cpu_suspend_fn);
323 qemu_fdt_setprop_cell(fdt, "/psci", "cpu_off", cpu_off_fn);
324 qemu_fdt_setprop_cell(fdt, "/psci", "cpu_on", cpu_on_fn);
325 qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn);
328 static void fdt_add_timer_nodes(const VirtBoardInfo *vbi, int gictype)
330 /* Note that on A15 h/w these interrupts are level-triggered,
331 * but for the GIC implementation provided by both QEMU and KVM
332 * they are edge-triggered.
335 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI;
338 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
339 GIC_FDT_IRQ_PPI_CPU_WIDTH,
340 (1 << vbi->smp_cpus) - 1);
343 qemu_fdt_add_subnode(vbi->fdt, "/timer");
345 armcpu = ARM_CPU(qemu_get_cpu(0));
346 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) {
347 const char compat[] = "arm,armv8-timer\0arm,armv7-timer";
348 qemu_fdt_setprop(vbi->fdt, "/timer", "compatible",
349 compat, sizeof(compat));
351 qemu_fdt_setprop_string(vbi->fdt, "/timer", "compatible",
354 qemu_fdt_setprop(vbi->fdt, "/timer", "always-on", NULL, 0);
355 qemu_fdt_setprop_cells(vbi->fdt, "/timer", "interrupts",
356 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_S_EL1_IRQ, irqflags,
357 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_NS_EL1_IRQ, irqflags,
358 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_VIRT_IRQ, irqflags,
359 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_NS_EL2_IRQ, irqflags);
362 static void fdt_add_cpu_nodes(const VirtBoardInfo *vbi)
369 * From Documentation/devicetree/bindings/arm/cpus.txt
370 * On ARM v8 64-bit systems value should be set to 2,
371 * that corresponds to the MPIDR_EL1 register size.
372 * If MPIDR_EL1[63:32] value is equal to 0 on all CPUs
373 * in the system, #address-cells can be set to 1, since
374 * MPIDR_EL1[63:32] bits are not used for CPUs
377 * Here we actually don't know whether our system is 32- or 64-bit one.
378 * The simplest way to go is to examine affinity IDs of all our CPUs. If
379 * at least one of them has Aff3 populated, we set #address-cells to 2.
381 for (cpu = 0; cpu < vbi->smp_cpus; cpu++) {
382 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
384 if (armcpu->mp_affinity & ARM_AFF3_MASK) {
390 qemu_fdt_add_subnode(vbi->fdt, "/cpus");
391 qemu_fdt_setprop_cell(vbi->fdt, "/cpus", "#address-cells", addr_cells);
392 qemu_fdt_setprop_cell(vbi->fdt, "/cpus", "#size-cells", 0x0);
394 for (cpu = vbi->smp_cpus - 1; cpu >= 0; cpu--) {
395 char *nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
396 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu));
398 qemu_fdt_add_subnode(vbi->fdt, nodename);
399 qemu_fdt_setprop_string(vbi->fdt, nodename, "device_type", "cpu");
400 qemu_fdt_setprop_string(vbi->fdt, nodename, "compatible",
401 armcpu->dtb_compatible);
403 if (vbi->using_psci && vbi->smp_cpus > 1) {
404 qemu_fdt_setprop_string(vbi->fdt, nodename,
405 "enable-method", "psci");
408 if (addr_cells == 2) {
409 qemu_fdt_setprop_u64(vbi->fdt, nodename, "reg",
410 armcpu->mp_affinity);
412 qemu_fdt_setprop_cell(vbi->fdt, nodename, "reg",
413 armcpu->mp_affinity);
416 for (i = 0; i < nb_numa_nodes; i++) {
417 if (test_bit(cpu, numa_info[i].node_cpu)) {
418 qemu_fdt_setprop_cell(vbi->fdt, nodename, "numa-node-id", i);
426 static void fdt_add_its_gic_node(VirtBoardInfo *vbi)
428 vbi->msi_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
429 qemu_fdt_add_subnode(vbi->fdt, "/intc/its");
430 qemu_fdt_setprop_string(vbi->fdt, "/intc/its", "compatible",
432 qemu_fdt_setprop(vbi->fdt, "/intc/its", "msi-controller", NULL, 0);
433 qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc/its", "reg",
434 2, vbi->memmap[VIRT_GIC_ITS].base,
435 2, vbi->memmap[VIRT_GIC_ITS].size);
436 qemu_fdt_setprop_cell(vbi->fdt, "/intc/its", "phandle", vbi->msi_phandle);
439 static void fdt_add_v2m_gic_node(VirtBoardInfo *vbi)
441 vbi->msi_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
442 qemu_fdt_add_subnode(vbi->fdt, "/intc/v2m");
443 qemu_fdt_setprop_string(vbi->fdt, "/intc/v2m", "compatible",
444 "arm,gic-v2m-frame");
445 qemu_fdt_setprop(vbi->fdt, "/intc/v2m", "msi-controller", NULL, 0);
446 qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc/v2m", "reg",
447 2, vbi->memmap[VIRT_GIC_V2M].base,
448 2, vbi->memmap[VIRT_GIC_V2M].size);
449 qemu_fdt_setprop_cell(vbi->fdt, "/intc/v2m", "phandle", vbi->msi_phandle);
452 static void fdt_add_gic_node(VirtBoardInfo *vbi, int type)
454 vbi->gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
455 qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", vbi->gic_phandle);
457 qemu_fdt_add_subnode(vbi->fdt, "/intc");
458 qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#interrupt-cells", 3);
459 qemu_fdt_setprop(vbi->fdt, "/intc", "interrupt-controller", NULL, 0);
460 qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#address-cells", 0x2);
461 qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#size-cells", 0x2);
462 qemu_fdt_setprop(vbi->fdt, "/intc", "ranges", NULL, 0);
464 qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible",
466 qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg",
467 2, vbi->memmap[VIRT_GIC_DIST].base,
468 2, vbi->memmap[VIRT_GIC_DIST].size,
469 2, vbi->memmap[VIRT_GIC_REDIST].base,
470 2, vbi->memmap[VIRT_GIC_REDIST].size);
472 /* 'cortex-a15-gic' means 'GIC v2' */
473 qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible",
474 "arm,cortex-a15-gic");
475 qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg",
476 2, vbi->memmap[VIRT_GIC_DIST].base,
477 2, vbi->memmap[VIRT_GIC_DIST].size,
478 2, vbi->memmap[VIRT_GIC_CPU].base,
479 2, vbi->memmap[VIRT_GIC_CPU].size);
482 qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle);
485 static void fdt_add_pmu_nodes(const VirtBoardInfo *vbi, int gictype)
489 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI;
492 armcpu = ARM_CPU(cpu);
493 if (!armcpu->has_pmu ||
494 !kvm_arm_pmu_create(cpu, PPI(VIRTUAL_PMU_IRQ))) {
500 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
501 GIC_FDT_IRQ_PPI_CPU_WIDTH,
502 (1 << vbi->smp_cpus) - 1);
505 armcpu = ARM_CPU(qemu_get_cpu(0));
506 qemu_fdt_add_subnode(vbi->fdt, "/pmu");
507 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) {
508 const char compat[] = "arm,armv8-pmuv3";
509 qemu_fdt_setprop(vbi->fdt, "/pmu", "compatible",
510 compat, sizeof(compat));
511 qemu_fdt_setprop_cells(vbi->fdt, "/pmu", "interrupts",
512 GIC_FDT_IRQ_TYPE_PPI, VIRTUAL_PMU_IRQ, irqflags);
516 static void create_its(VirtBoardInfo *vbi, DeviceState *gicdev)
518 const char *itsclass = its_class_name();
522 /* Do nothing if not supported */
526 dev = qdev_create(NULL, itsclass);
528 object_property_set_link(OBJECT(dev), OBJECT(gicdev), "parent-gicv3",
530 qdev_init_nofail(dev);
531 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vbi->memmap[VIRT_GIC_ITS].base);
533 fdt_add_its_gic_node(vbi);
536 static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic)
539 int irq = vbi->irqmap[VIRT_GIC_V2M];
542 dev = qdev_create(NULL, "arm-gicv2m");
543 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vbi->memmap[VIRT_GIC_V2M].base);
544 qdev_prop_set_uint32(dev, "base-spi", irq);
545 qdev_prop_set_uint32(dev, "num-spi", NUM_GICV2M_SPIS);
546 qdev_init_nofail(dev);
548 for (i = 0; i < NUM_GICV2M_SPIS; i++) {
549 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
552 fdt_add_v2m_gic_node(vbi);
555 static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, int type, bool secure)
557 /* We create a standalone GIC */
559 SysBusDevice *gicbusdev;
563 gictype = (type == 3) ? gicv3_class_name() : gic_class_name();
565 gicdev = qdev_create(NULL, gictype);
566 qdev_prop_set_uint32(gicdev, "revision", type);
567 qdev_prop_set_uint32(gicdev, "num-cpu", smp_cpus);
568 /* Note that the num-irq property counts both internal and external
569 * interrupts; there are always 32 of the former (mandated by GIC spec).
571 qdev_prop_set_uint32(gicdev, "num-irq", NUM_IRQS + 32);
572 if (!kvm_irqchip_in_kernel()) {
573 qdev_prop_set_bit(gicdev, "has-security-extensions", secure);
575 qdev_init_nofail(gicdev);
576 gicbusdev = SYS_BUS_DEVICE(gicdev);
577 sysbus_mmio_map(gicbusdev, 0, vbi->memmap[VIRT_GIC_DIST].base);
579 sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_REDIST].base);
581 sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_CPU].base);
584 /* Wire the outputs from each CPU's generic timer to the
585 * appropriate GIC PPI inputs, and the GIC's IRQ output to
586 * the CPU's IRQ input.
588 for (i = 0; i < smp_cpus; i++) {
589 DeviceState *cpudev = DEVICE(qemu_get_cpu(i));
590 int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS;
592 /* Mapping from the output timer irq lines from the CPU to the
593 * GIC PPI inputs we use for the virt board.
595 const int timer_irq[] = {
596 [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ,
597 [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ,
598 [GTIMER_HYP] = ARCH_TIMER_NS_EL2_IRQ,
599 [GTIMER_SEC] = ARCH_TIMER_S_EL1_IRQ,
602 for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) {
603 qdev_connect_gpio_out(cpudev, irq,
604 qdev_get_gpio_in(gicdev,
605 ppibase + timer_irq[irq]));
608 sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ));
609 sysbus_connect_irq(gicbusdev, i + smp_cpus,
610 qdev_get_gpio_in(cpudev, ARM_CPU_FIQ));
613 for (i = 0; i < NUM_IRQS; i++) {
614 pic[i] = qdev_get_gpio_in(gicdev, i);
617 fdt_add_gic_node(vbi, type);
620 create_its(vbi, gicdev);
622 create_v2m(vbi, pic);
626 static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic, int uart,
627 MemoryRegion *mem, CharDriverState *chr)
630 hwaddr base = vbi->memmap[uart].base;
631 hwaddr size = vbi->memmap[uart].size;
632 int irq = vbi->irqmap[uart];
633 const char compat[] = "arm,pl011\0arm,primecell";
634 const char clocknames[] = "uartclk\0apb_pclk";
635 DeviceState *dev = qdev_create(NULL, "pl011");
636 SysBusDevice *s = SYS_BUS_DEVICE(dev);
638 qdev_prop_set_chr(dev, "chardev", chr);
639 qdev_init_nofail(dev);
640 memory_region_add_subregion(mem, base,
641 sysbus_mmio_get_region(s, 0));
642 sysbus_connect_irq(s, 0, pic[irq]);
644 nodename = g_strdup_printf("/pl011@%" PRIx64, base);
645 qemu_fdt_add_subnode(vbi->fdt, nodename);
646 /* Note that we can't use setprop_string because of the embedded NUL */
647 qemu_fdt_setprop(vbi->fdt, nodename, "compatible",
648 compat, sizeof(compat));
649 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
651 qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
652 GIC_FDT_IRQ_TYPE_SPI, irq,
653 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
654 qemu_fdt_setprop_cells(vbi->fdt, nodename, "clocks",
655 vbi->clock_phandle, vbi->clock_phandle);
656 qemu_fdt_setprop(vbi->fdt, nodename, "clock-names",
657 clocknames, sizeof(clocknames));
659 if (uart == VIRT_UART) {
660 qemu_fdt_setprop_string(vbi->fdt, "/chosen", "stdout-path", nodename);
662 /* Mark as not usable by the normal world */
663 qemu_fdt_setprop_string(vbi->fdt, nodename, "status", "disabled");
664 qemu_fdt_setprop_string(vbi->fdt, nodename, "secure-status", "okay");
670 static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic)
673 hwaddr base = vbi->memmap[VIRT_RTC].base;
674 hwaddr size = vbi->memmap[VIRT_RTC].size;
675 int irq = vbi->irqmap[VIRT_RTC];
676 const char compat[] = "arm,pl031\0arm,primecell";
678 sysbus_create_simple("pl031", base, pic[irq]);
680 nodename = g_strdup_printf("/pl031@%" PRIx64, base);
681 qemu_fdt_add_subnode(vbi->fdt, nodename);
682 qemu_fdt_setprop(vbi->fdt, nodename, "compatible", compat, sizeof(compat));
683 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
685 qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
686 GIC_FDT_IRQ_TYPE_SPI, irq,
687 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
688 qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle);
689 qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk");
693 static DeviceState *gpio_key_dev;
694 static void virt_powerdown_req(Notifier *n, void *opaque)
696 /* use gpio Pin 3 for power button event */
697 qemu_set_irq(qdev_get_gpio_in(gpio_key_dev, 0), 1);
700 static Notifier virt_system_powerdown_notifier = {
701 .notify = virt_powerdown_req
704 static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic)
707 DeviceState *pl061_dev;
708 hwaddr base = vbi->memmap[VIRT_GPIO].base;
709 hwaddr size = vbi->memmap[VIRT_GPIO].size;
710 int irq = vbi->irqmap[VIRT_GPIO];
711 const char compat[] = "arm,pl061\0arm,primecell";
713 pl061_dev = sysbus_create_simple("pl061", base, pic[irq]);
715 uint32_t phandle = qemu_fdt_alloc_phandle(vbi->fdt);
716 nodename = g_strdup_printf("/pl061@%" PRIx64, base);
717 qemu_fdt_add_subnode(vbi->fdt, nodename);
718 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
720 qemu_fdt_setprop(vbi->fdt, nodename, "compatible", compat, sizeof(compat));
721 qemu_fdt_setprop_cell(vbi->fdt, nodename, "#gpio-cells", 2);
722 qemu_fdt_setprop(vbi->fdt, nodename, "gpio-controller", NULL, 0);
723 qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
724 GIC_FDT_IRQ_TYPE_SPI, irq,
725 GIC_FDT_IRQ_FLAGS_LEVEL_HI);
726 qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle);
727 qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk");
728 qemu_fdt_setprop_cell(vbi->fdt, nodename, "phandle", phandle);
730 gpio_key_dev = sysbus_create_simple("gpio-key", -1,
731 qdev_get_gpio_in(pl061_dev, 3));
732 qemu_fdt_add_subnode(vbi->fdt, "/gpio-keys");
733 qemu_fdt_setprop_string(vbi->fdt, "/gpio-keys", "compatible", "gpio-keys");
734 qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys", "#size-cells", 0);
735 qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys", "#address-cells", 1);
737 qemu_fdt_add_subnode(vbi->fdt, "/gpio-keys/poweroff");
738 qemu_fdt_setprop_string(vbi->fdt, "/gpio-keys/poweroff",
739 "label", "GPIO Key Poweroff");
740 qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys/poweroff", "linux,code",
742 qemu_fdt_setprop_cells(vbi->fdt, "/gpio-keys/poweroff",
743 "gpios", phandle, 3, 0);
745 /* connect powerdown request */
746 qemu_register_powerdown_notifier(&virt_system_powerdown_notifier);
751 static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
754 hwaddr size = vbi->memmap[VIRT_MMIO].size;
756 /* We create the transports in forwards order. Since qbus_realize()
757 * prepends (not appends) new child buses, the incrementing loop below will
758 * create a list of virtio-mmio buses with decreasing base addresses.
760 * When a -device option is processed from the command line,
761 * qbus_find_recursive() picks the next free virtio-mmio bus in forwards
762 * order. The upshot is that -device options in increasing command line
763 * order are mapped to virtio-mmio buses with decreasing base addresses.
765 * When this code was originally written, that arrangement ensured that the
766 * guest Linux kernel would give the lowest "name" (/dev/vda, eth0, etc) to
767 * the first -device on the command line. (The end-to-end order is a
768 * function of this loop, qbus_realize(), qbus_find_recursive(), and the
769 * guest kernel's name-to-address assignment strategy.)
771 * Meanwhile, the kernel's traversal seems to have been reversed; see eg.
772 * the message, if not necessarily the code, of commit 70161ff336.
773 * Therefore the loop now establishes the inverse of the original intent.
775 * Unfortunately, we can't counteract the kernel change by reversing the
776 * loop; it would break existing command lines.
778 * In any case, the kernel makes no guarantee about the stability of
779 * enumeration order of virtio devices (as demonstrated by it changing
780 * between kernel versions). For reliable and stable identification
781 * of disks users must use UUIDs or similar mechanisms.
783 for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) {
784 int irq = vbi->irqmap[VIRT_MMIO] + i;
785 hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
787 sysbus_create_simple("virtio-mmio", base, pic[irq]);
790 /* We add dtb nodes in reverse order so that they appear in the finished
791 * device tree lowest address first.
793 * Note that this mapping is independent of the loop above. The previous
794 * loop influences virtio device to virtio transport assignment, whereas
795 * this loop controls how virtio transports are laid out in the dtb.
797 for (i = NUM_VIRTIO_TRANSPORTS - 1; i >= 0; i--) {
799 int irq = vbi->irqmap[VIRT_MMIO] + i;
800 hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
802 nodename = g_strdup_printf("/virtio_mmio@%" PRIx64, base);
803 qemu_fdt_add_subnode(vbi->fdt, nodename);
804 qemu_fdt_setprop_string(vbi->fdt, nodename,
805 "compatible", "virtio,mmio");
806 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
808 qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts",
809 GIC_FDT_IRQ_TYPE_SPI, irq,
810 GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
815 static void create_one_flash(const char *name, hwaddr flashbase,
816 hwaddr flashsize, const char *file,
817 MemoryRegion *sysmem)
819 /* Create and map a single flash device. We use the same
820 * parameters as the flash devices on the Versatile Express board.
822 DriveInfo *dinfo = drive_get_next(IF_PFLASH);
823 DeviceState *dev = qdev_create(NULL, "cfi.pflash01");
824 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
825 const uint64_t sectorlength = 256 * 1024;
828 qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo),
832 qdev_prop_set_uint32(dev, "num-blocks", flashsize / sectorlength);
833 qdev_prop_set_uint64(dev, "sector-length", sectorlength);
834 qdev_prop_set_uint8(dev, "width", 4);
835 qdev_prop_set_uint8(dev, "device-width", 2);
836 qdev_prop_set_bit(dev, "big-endian", false);
837 qdev_prop_set_uint16(dev, "id0", 0x89);
838 qdev_prop_set_uint16(dev, "id1", 0x18);
839 qdev_prop_set_uint16(dev, "id2", 0x00);
840 qdev_prop_set_uint16(dev, "id3", 0x00);
841 qdev_prop_set_string(dev, "name", name);
842 qdev_init_nofail(dev);
844 memory_region_add_subregion(sysmem, flashbase,
845 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
851 if (drive_get(IF_PFLASH, 0, 0)) {
852 error_report("The contents of the first flash device may be "
853 "specified with -bios or with -drive if=pflash... "
854 "but you cannot use both options at once");
857 fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, file);
859 error_report("Could not find ROM image '%s'", file);
862 image_size = load_image_mr(fn, sysbus_mmio_get_region(sbd, 0));
864 if (image_size < 0) {
865 error_report("Could not load ROM image '%s'", file);
871 static void create_flash(const VirtBoardInfo *vbi,
872 MemoryRegion *sysmem,
873 MemoryRegion *secure_sysmem)
875 /* Create two flash devices to fill the VIRT_FLASH space in the memmap.
876 * Any file passed via -bios goes in the first of these.
877 * sysmem is the system memory space. secure_sysmem is the secure view
878 * of the system, and the first flash device should be made visible only
879 * there. The second flash device is visible to both secure and nonsecure.
880 * If sysmem == secure_sysmem this means there is no separate Secure
881 * address space and both flash devices are generally visible.
883 hwaddr flashsize = vbi->memmap[VIRT_FLASH].size / 2;
884 hwaddr flashbase = vbi->memmap[VIRT_FLASH].base;
887 create_one_flash("virt.flash0", flashbase, flashsize,
888 bios_name, secure_sysmem);
889 create_one_flash("virt.flash1", flashbase + flashsize, flashsize,
892 if (sysmem == secure_sysmem) {
893 /* Report both flash devices as a single node in the DT */
894 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase);
895 qemu_fdt_add_subnode(vbi->fdt, nodename);
896 qemu_fdt_setprop_string(vbi->fdt, nodename, "compatible", "cfi-flash");
897 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
898 2, flashbase, 2, flashsize,
899 2, flashbase + flashsize, 2, flashsize);
900 qemu_fdt_setprop_cell(vbi->fdt, nodename, "bank-width", 4);
903 /* Report the devices as separate nodes so we can mark one as
904 * only visible to the secure world.
906 nodename = g_strdup_printf("/secflash@%" PRIx64, flashbase);
907 qemu_fdt_add_subnode(vbi->fdt, nodename);
908 qemu_fdt_setprop_string(vbi->fdt, nodename, "compatible", "cfi-flash");
909 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
910 2, flashbase, 2, flashsize);
911 qemu_fdt_setprop_cell(vbi->fdt, nodename, "bank-width", 4);
912 qemu_fdt_setprop_string(vbi->fdt, nodename, "status", "disabled");
913 qemu_fdt_setprop_string(vbi->fdt, nodename, "secure-status", "okay");
916 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase);
917 qemu_fdt_add_subnode(vbi->fdt, nodename);
918 qemu_fdt_setprop_string(vbi->fdt, nodename, "compatible", "cfi-flash");
919 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
920 2, flashbase + flashsize, 2, flashsize);
921 qemu_fdt_setprop_cell(vbi->fdt, nodename, "bank-width", 4);
926 static void create_fw_cfg(const VirtBoardInfo *vbi, AddressSpace *as)
928 hwaddr base = vbi->memmap[VIRT_FW_CFG].base;
929 hwaddr size = vbi->memmap[VIRT_FW_CFG].size;
932 fw_cfg_init_mem_wide(base + 8, base, 8, base + 16, as);
934 nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
935 qemu_fdt_add_subnode(vbi->fdt, nodename);
936 qemu_fdt_setprop_string(vbi->fdt, nodename,
937 "compatible", "qemu,fw-cfg-mmio");
938 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
943 static void create_pcie_irq_map(const VirtBoardInfo *vbi, uint32_t gic_phandle,
944 int first_irq, const char *nodename)
947 uint32_t full_irq_map[4 * 4 * 10] = { 0 };
948 uint32_t *irq_map = full_irq_map;
950 for (devfn = 0; devfn <= 0x18; devfn += 0x8) {
951 for (pin = 0; pin < 4; pin++) {
952 int irq_type = GIC_FDT_IRQ_TYPE_SPI;
953 int irq_nr = first_irq + ((pin + PCI_SLOT(devfn)) % PCI_NUM_PINS);
954 int irq_level = GIC_FDT_IRQ_FLAGS_LEVEL_HI;
958 devfn << 8, 0, 0, /* devfn */
959 pin + 1, /* PCI pin */
960 gic_phandle, 0, 0, irq_type, irq_nr, irq_level }; /* GIC irq */
962 /* Convert map to big endian */
963 for (i = 0; i < 10; i++) {
964 irq_map[i] = cpu_to_be32(map[i]);
970 qemu_fdt_setprop(vbi->fdt, nodename, "interrupt-map",
971 full_irq_map, sizeof(full_irq_map));
973 qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupt-map-mask",
974 0x1800, 0, 0, /* devfn (PCI_SLOT(3)) */
978 static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic,
981 hwaddr base_mmio = vbi->memmap[VIRT_PCIE_MMIO].base;
982 hwaddr size_mmio = vbi->memmap[VIRT_PCIE_MMIO].size;
983 hwaddr base_mmio_high = vbi->memmap[VIRT_PCIE_MMIO_HIGH].base;
984 hwaddr size_mmio_high = vbi->memmap[VIRT_PCIE_MMIO_HIGH].size;
985 hwaddr base_pio = vbi->memmap[VIRT_PCIE_PIO].base;
986 hwaddr size_pio = vbi->memmap[VIRT_PCIE_PIO].size;
987 hwaddr base_ecam = vbi->memmap[VIRT_PCIE_ECAM].base;
988 hwaddr size_ecam = vbi->memmap[VIRT_PCIE_ECAM].size;
989 hwaddr base = base_mmio;
990 int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
991 int irq = vbi->irqmap[VIRT_PCIE];
992 MemoryRegion *mmio_alias;
993 MemoryRegion *mmio_reg;
994 MemoryRegion *ecam_alias;
995 MemoryRegion *ecam_reg;
1001 dev = qdev_create(NULL, TYPE_GPEX_HOST);
1002 qdev_init_nofail(dev);
1004 /* Map only the first size_ecam bytes of ECAM space */
1005 ecam_alias = g_new0(MemoryRegion, 1);
1006 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
1007 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam",
1008 ecam_reg, 0, size_ecam);
1009 memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias);
1011 /* Map the MMIO window into system address space so as to expose
1012 * the section of PCI MMIO space which starts at the same base address
1013 * (ie 1:1 mapping for that part of PCI MMIO space visible through
1016 mmio_alias = g_new0(MemoryRegion, 1);
1017 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
1018 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio",
1019 mmio_reg, base_mmio, size_mmio);
1020 memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias);
1023 /* Map high MMIO space */
1024 MemoryRegion *high_mmio_alias = g_new0(MemoryRegion, 1);
1026 memory_region_init_alias(high_mmio_alias, OBJECT(dev), "pcie-mmio-high",
1027 mmio_reg, base_mmio_high, size_mmio_high);
1028 memory_region_add_subregion(get_system_memory(), base_mmio_high,
1032 /* Map IO port space */
1033 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_pio);
1035 for (i = 0; i < GPEX_NUM_IRQS; i++) {
1036 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
1039 pci = PCI_HOST_BRIDGE(dev);
1041 for (i = 0; i < nb_nics; i++) {
1042 NICInfo *nd = &nd_table[i];
1045 nd->model = g_strdup("virtio");
1048 pci_nic_init_nofail(nd, pci->bus, nd->model, NULL);
1052 nodename = g_strdup_printf("/pcie@%" PRIx64, base);
1053 qemu_fdt_add_subnode(vbi->fdt, nodename);
1054 qemu_fdt_setprop_string(vbi->fdt, nodename,
1055 "compatible", "pci-host-ecam-generic");
1056 qemu_fdt_setprop_string(vbi->fdt, nodename, "device_type", "pci");
1057 qemu_fdt_setprop_cell(vbi->fdt, nodename, "#address-cells", 3);
1058 qemu_fdt_setprop_cell(vbi->fdt, nodename, "#size-cells", 2);
1059 qemu_fdt_setprop_cells(vbi->fdt, nodename, "bus-range", 0,
1061 qemu_fdt_setprop(vbi->fdt, nodename, "dma-coherent", NULL, 0);
1063 if (vbi->msi_phandle) {
1064 qemu_fdt_setprop_cells(vbi->fdt, nodename, "msi-parent",
1068 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
1069 2, base_ecam, 2, size_ecam);
1072 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "ranges",
1073 1, FDT_PCI_RANGE_IOPORT, 2, 0,
1074 2, base_pio, 2, size_pio,
1075 1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
1076 2, base_mmio, 2, size_mmio,
1077 1, FDT_PCI_RANGE_MMIO_64BIT,
1079 2, base_mmio_high, 2, size_mmio_high);
1081 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "ranges",
1082 1, FDT_PCI_RANGE_IOPORT, 2, 0,
1083 2, base_pio, 2, size_pio,
1084 1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
1085 2, base_mmio, 2, size_mmio);
1088 qemu_fdt_setprop_cell(vbi->fdt, nodename, "#interrupt-cells", 1);
1089 create_pcie_irq_map(vbi, vbi->gic_phandle, irq, nodename);
1094 static void create_platform_bus(VirtBoardInfo *vbi, qemu_irq *pic)
1099 ARMPlatformBusFDTParams *fdt_params = g_new(ARMPlatformBusFDTParams, 1);
1100 MemoryRegion *sysmem = get_system_memory();
1102 platform_bus_params.platform_bus_base = vbi->memmap[VIRT_PLATFORM_BUS].base;
1103 platform_bus_params.platform_bus_size = vbi->memmap[VIRT_PLATFORM_BUS].size;
1104 platform_bus_params.platform_bus_first_irq = vbi->irqmap[VIRT_PLATFORM_BUS];
1105 platform_bus_params.platform_bus_num_irqs = PLATFORM_BUS_NUM_IRQS;
1107 fdt_params->system_params = &platform_bus_params;
1108 fdt_params->binfo = &vbi->bootinfo;
1109 fdt_params->intc = "/intc";
1111 * register a machine init done notifier that creates the device tree
1112 * nodes of the platform bus and its children dynamic sysbus devices
1114 arm_register_platform_bus_fdt_creator(fdt_params);
1116 dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE);
1117 dev->id = TYPE_PLATFORM_BUS_DEVICE;
1118 qdev_prop_set_uint32(dev, "num_irqs",
1119 platform_bus_params.platform_bus_num_irqs);
1120 qdev_prop_set_uint32(dev, "mmio_size",
1121 platform_bus_params.platform_bus_size);
1122 qdev_init_nofail(dev);
1123 s = SYS_BUS_DEVICE(dev);
1125 for (i = 0; i < platform_bus_params.platform_bus_num_irqs; i++) {
1126 int irqn = platform_bus_params.platform_bus_first_irq + i;
1127 sysbus_connect_irq(s, i, pic[irqn]);
1130 memory_region_add_subregion(sysmem,
1131 platform_bus_params.platform_bus_base,
1132 sysbus_mmio_get_region(s, 0));
1135 static void create_secure_ram(VirtBoardInfo *vbi, MemoryRegion *secure_sysmem)
1137 MemoryRegion *secram = g_new(MemoryRegion, 1);
1139 hwaddr base = vbi->memmap[VIRT_SECURE_MEM].base;
1140 hwaddr size = vbi->memmap[VIRT_SECURE_MEM].size;
1142 memory_region_init_ram(secram, NULL, "virt.secure-ram", size, &error_fatal);
1143 vmstate_register_ram_global(secram);
1144 memory_region_add_subregion(secure_sysmem, base, secram);
1146 nodename = g_strdup_printf("/secram@%" PRIx64, base);
1147 qemu_fdt_add_subnode(vbi->fdt, nodename);
1148 qemu_fdt_setprop_string(vbi->fdt, nodename, "device_type", "memory");
1149 qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg", 2, base, 2, size);
1150 qemu_fdt_setprop_string(vbi->fdt, nodename, "status", "disabled");
1151 qemu_fdt_setprop_string(vbi->fdt, nodename, "secure-status", "okay");
1156 static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size)
1158 const VirtBoardInfo *board = (const VirtBoardInfo *)binfo;
1160 *fdt_size = board->fdt_size;
1164 static void virt_build_smbios(VirtGuestInfo *guest_info)
1166 FWCfgState *fw_cfg = guest_info->fw_cfg;
1167 uint8_t *smbios_tables, *smbios_anchor;
1168 size_t smbios_tables_len, smbios_anchor_len;
1169 const char *product = "QEMU Virtual Machine";
1175 if (kvm_enabled()) {
1176 product = "KVM Virtual Machine";
1179 smbios_set_defaults("QEMU", product,
1180 "1.0", false, true, SMBIOS_ENTRY_POINT_30);
1182 smbios_get_tables(NULL, 0, &smbios_tables, &smbios_tables_len,
1183 &smbios_anchor, &smbios_anchor_len);
1185 if (smbios_anchor) {
1186 fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-tables",
1187 smbios_tables, smbios_tables_len);
1188 fw_cfg_add_file(fw_cfg, "etc/smbios/smbios-anchor",
1189 smbios_anchor, smbios_anchor_len);
1194 void virt_guest_info_machine_done(Notifier *notifier, void *data)
1196 VirtGuestInfoState *guest_info_state = container_of(notifier,
1197 VirtGuestInfoState, machine_done);
1198 virt_acpi_setup(&guest_info_state->info);
1199 virt_build_smbios(&guest_info_state->info);
1202 static void machvirt_init(MachineState *machine)
1204 VirtMachineState *vms = VIRT_MACHINE(machine);
1205 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(machine);
1206 qemu_irq pic[NUM_IRQS];
1207 MemoryRegion *sysmem = get_system_memory();
1208 MemoryRegion *secure_sysmem = NULL;
1209 int gic_version = vms->gic_version;
1210 int n, virt_max_cpus;
1211 MemoryRegion *ram = g_new(MemoryRegion, 1);
1212 const char *cpu_model = machine->cpu_model;
1214 VirtGuestInfoState *guest_info_state = g_malloc0(sizeof *guest_info_state);
1215 VirtGuestInfo *guest_info = &guest_info_state->info;
1218 const char *typename;
1221 bool firmware_loaded = bios_name || drive_get(IF_PFLASH, 0, 0);
1225 cpu_model = "cortex-a15";
1228 /* We can probe only here because during property set
1229 * KVM is not available yet
1232 if (!kvm_enabled()) {
1233 error_report("gic-version=host requires KVM");
1237 gic_version = kvm_arm_vgic_probe();
1239 error_report("Unable to determine GIC version supported by host");
1244 /* Separate the actual CPU model name from any appended features */
1245 cpustr = g_strsplit(cpu_model, ",", 2);
1247 vbi = find_machine_info(cpustr[0]);
1250 error_report("mach-virt: CPU %s not supported", cpustr[0]);
1254 /* If we have an EL3 boot ROM then the assumption is that it will
1255 * implement PSCI itself, so disable QEMU's internal implementation
1256 * so it doesn't get in the way. Instead of starting secondary
1257 * CPUs in PSCI powerdown state we will start them all running and
1258 * let the boot ROM sort them out.
1259 * The usual case is that we do use QEMU's PSCI implementation.
1261 vbi->using_psci = !(vms->secure && firmware_loaded);
1263 /* The maximum number of CPUs depends on the GIC version, or on how
1264 * many redistributors we can fit into the memory map.
1266 if (gic_version == 3) {
1267 virt_max_cpus = vbi->memmap[VIRT_GIC_REDIST].size / 0x20000;
1268 clustersz = GICV3_TARGETLIST_BITS;
1270 virt_max_cpus = GIC_NCPU;
1271 clustersz = GIC_TARGETLIST_BITS;
1274 if (max_cpus > virt_max_cpus) {
1275 error_report("Number of SMP CPUs requested (%d) exceeds max CPUs "
1276 "supported by machine 'mach-virt' (%d)",
1277 max_cpus, virt_max_cpus);
1281 vbi->smp_cpus = smp_cpus;
1283 if (machine->ram_size > vbi->memmap[VIRT_MEM].size) {
1284 error_report("mach-virt: cannot model more than %dGB RAM", RAMLIMIT_GB);
1289 if (kvm_enabled()) {
1290 error_report("mach-virt: KVM does not support Security extensions");
1294 /* The Secure view of the world is the same as the NonSecure,
1295 * but with a few extra devices. Create it as a container region
1296 * containing the system memory at low priority; any secure-only
1297 * devices go in at higher priority and take precedence.
1299 secure_sysmem = g_new(MemoryRegion, 1);
1300 memory_region_init(secure_sysmem, OBJECT(machine), "secure-memory",
1302 memory_region_add_subregion_overlap(secure_sysmem, 0, sysmem, -1);
1307 oc = cpu_class_by_name(TYPE_ARM_CPU, cpustr[0]);
1309 error_report("Unable to find CPU definition");
1312 typename = object_class_get_name(oc);
1314 /* convert -smp CPU options specified by the user into global props */
1316 cc->parse_features(typename, cpustr[1], &err);
1319 error_report_err(err);
1323 for (n = 0; n < smp_cpus; n++) {
1324 Object *cpuobj = object_new(typename);
1325 if (!vmc->disallow_affinity_adjustment) {
1326 /* Adjust MPIDR like 64-bit KVM hosts, which incorporate the
1327 * GIC's target-list limitations. 32-bit KVM hosts currently
1328 * always create clusters of 4 CPUs, but that is expected to
1329 * change when they gain support for gicv3. When KVM is enabled
1330 * it will override the changes we make here, therefore our
1331 * purposes are to make TCG consistent (with 64-bit KVM hosts)
1332 * and to improve SGI efficiency.
1334 uint8_t aff1 = n / clustersz;
1335 uint8_t aff0 = n % clustersz;
1336 object_property_set_int(cpuobj, (aff1 << ARM_AFF1_SHIFT) | aff0,
1337 "mp-affinity", NULL);
1341 object_property_set_bool(cpuobj, false, "has_el3", NULL);
1344 if (vbi->using_psci) {
1345 object_property_set_int(cpuobj, QEMU_PSCI_CONDUIT_HVC,
1346 "psci-conduit", NULL);
1348 /* Secondary CPUs start in PSCI powered-down state */
1350 object_property_set_bool(cpuobj, true,
1351 "start-powered-off", NULL);
1355 if (object_property_find(cpuobj, "reset-cbar", NULL)) {
1356 object_property_set_int(cpuobj, vbi->memmap[VIRT_CPUPERIPHS].base,
1357 "reset-cbar", &error_abort);
1360 object_property_set_link(cpuobj, OBJECT(sysmem), "memory",
1363 object_property_set_link(cpuobj, OBJECT(secure_sysmem),
1364 "secure-memory", &error_abort);
1367 object_property_set_bool(cpuobj, true, "realized", NULL);
1369 fdt_add_timer_nodes(vbi, gic_version);
1370 fdt_add_cpu_nodes(vbi);
1371 fdt_add_psci_node(vbi);
1373 memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram",
1375 memory_region_add_subregion(sysmem, vbi->memmap[VIRT_MEM].base, ram);
1377 create_flash(vbi, sysmem, secure_sysmem ? secure_sysmem : sysmem);
1379 create_gic(vbi, pic, gic_version, vms->secure);
1381 fdt_add_pmu_nodes(vbi, gic_version);
1383 create_uart(vbi, pic, VIRT_UART, sysmem, serial_hds[0]);
1386 create_secure_ram(vbi, secure_sysmem);
1387 create_uart(vbi, pic, VIRT_SECURE_UART, secure_sysmem, serial_hds[1]);
1390 create_rtc(vbi, pic);
1392 create_pcie(vbi, pic, vms->highmem);
1394 create_gpio(vbi, pic);
1396 /* Create mmio transports, so the user can create virtio backends
1397 * (which will be automatically plugged in to the transports). If
1398 * no backend is created the transport will just sit harmlessly idle.
1400 create_virtio_devices(vbi, pic);
1402 create_fw_cfg(vbi, &address_space_memory);
1403 rom_set_fw(fw_cfg_find());
1405 guest_info->smp_cpus = smp_cpus;
1406 guest_info->fw_cfg = fw_cfg_find();
1407 guest_info->memmap = vbi->memmap;
1408 guest_info->irqmap = vbi->irqmap;
1409 guest_info->use_highmem = vms->highmem;
1410 guest_info->gic_version = gic_version;
1411 guest_info_state->machine_done.notify = virt_guest_info_machine_done;
1412 qemu_add_machine_init_done_notifier(&guest_info_state->machine_done);
1414 vbi->bootinfo.ram_size = machine->ram_size;
1415 vbi->bootinfo.kernel_filename = machine->kernel_filename;
1416 vbi->bootinfo.kernel_cmdline = machine->kernel_cmdline;
1417 vbi->bootinfo.initrd_filename = machine->initrd_filename;
1418 vbi->bootinfo.nb_cpus = smp_cpus;
1419 vbi->bootinfo.board_id = -1;
1420 vbi->bootinfo.loader_start = vbi->memmap[VIRT_MEM].base;
1421 vbi->bootinfo.get_dtb = machvirt_dtb;
1422 vbi->bootinfo.firmware_loaded = firmware_loaded;
1423 arm_load_kernel(ARM_CPU(first_cpu), &vbi->bootinfo);
1426 * arm_load_kernel machine init done notifier registration must
1427 * happen before the platform_bus_create call. In this latter,
1428 * another notifier is registered which adds platform bus nodes.
1429 * Notifiers are executed in registration reverse order.
1431 create_platform_bus(vbi, pic);
1434 static bool virt_get_secure(Object *obj, Error **errp)
1436 VirtMachineState *vms = VIRT_MACHINE(obj);
1441 static void virt_set_secure(Object *obj, bool value, Error **errp)
1443 VirtMachineState *vms = VIRT_MACHINE(obj);
1445 vms->secure = value;
1448 static bool virt_get_highmem(Object *obj, Error **errp)
1450 VirtMachineState *vms = VIRT_MACHINE(obj);
1452 return vms->highmem;
1455 static void virt_set_highmem(Object *obj, bool value, Error **errp)
1457 VirtMachineState *vms = VIRT_MACHINE(obj);
1459 vms->highmem = value;
1462 static char *virt_get_gic_version(Object *obj, Error **errp)
1464 VirtMachineState *vms = VIRT_MACHINE(obj);
1465 const char *val = vms->gic_version == 3 ? "3" : "2";
1467 return g_strdup(val);
1470 static void virt_set_gic_version(Object *obj, const char *value, Error **errp)
1472 VirtMachineState *vms = VIRT_MACHINE(obj);
1474 if (!strcmp(value, "3")) {
1475 vms->gic_version = 3;
1476 } else if (!strcmp(value, "2")) {
1477 vms->gic_version = 2;
1478 } else if (!strcmp(value, "host")) {
1479 vms->gic_version = 0; /* Will probe later */
1481 error_setg(errp, "Invalid gic-version value");
1482 error_append_hint(errp, "Valid values are 3, 2, host.\n");
1486 static void virt_machine_class_init(ObjectClass *oc, void *data)
1488 MachineClass *mc = MACHINE_CLASS(oc);
1490 mc->init = machvirt_init;
1491 /* Start max_cpus at the maximum QEMU supports. We'll further restrict
1492 * it later in machvirt_init, where we have more information about the
1493 * configuration of the particular instance.
1495 mc->max_cpus = MAX_CPUMASK_BITS;
1496 mc->has_dynamic_sysbus = true;
1497 mc->block_default_type = IF_VIRTIO;
1499 mc->pci_allow_0_address = true;
1502 static const TypeInfo virt_machine_info = {
1503 .name = TYPE_VIRT_MACHINE,
1504 .parent = TYPE_MACHINE,
1506 .instance_size = sizeof(VirtMachineState),
1507 .class_size = sizeof(VirtMachineClass),
1508 .class_init = virt_machine_class_init,
1511 static void machvirt_machine_init(void)
1513 type_register_static(&virt_machine_info);
1515 type_init(machvirt_machine_init);
1517 static void virt_2_8_instance_init(Object *obj)
1519 VirtMachineState *vms = VIRT_MACHINE(obj);
1521 /* EL3 is disabled by default on virt: this makes us consistent
1522 * between KVM and TCG for this board, and it also allows us to
1523 * boot UEFI blobs which assume no TrustZone support.
1525 vms->secure = false;
1526 object_property_add_bool(obj, "secure", virt_get_secure,
1527 virt_set_secure, NULL);
1528 object_property_set_description(obj, "secure",
1529 "Set on/off to enable/disable the ARM "
1530 "Security Extensions (TrustZone)",
1533 /* High memory is enabled by default */
1534 vms->highmem = true;
1535 object_property_add_bool(obj, "highmem", virt_get_highmem,
1536 virt_set_highmem, NULL);
1537 object_property_set_description(obj, "highmem",
1538 "Set on/off to enable/disable using "
1539 "physical address space above 32 bits",
1541 /* Default GIC type is v2 */
1542 vms->gic_version = 2;
1543 object_property_add_str(obj, "gic-version", virt_get_gic_version,
1544 virt_set_gic_version, NULL);
1545 object_property_set_description(obj, "gic-version",
1547 "Valid values are 2, 3 and host", NULL);
1550 static void virt_machine_2_8_options(MachineClass *mc)
1553 DEFINE_VIRT_MACHINE_AS_LATEST(2, 8)
1555 #define VIRT_COMPAT_2_7 \
1558 static void virt_2_7_instance_init(Object *obj)
1560 virt_2_8_instance_init(obj);
1563 static void virt_machine_2_7_options(MachineClass *mc)
1565 virt_machine_2_8_options(mc);
1566 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_7);
1568 DEFINE_VIRT_MACHINE(2, 7)
1570 #define VIRT_COMPAT_2_6 \
1573 static void virt_2_6_instance_init(Object *obj)
1575 virt_2_7_instance_init(obj);
1578 static void virt_machine_2_6_options(MachineClass *mc)
1580 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
1582 virt_machine_2_7_options(mc);
1583 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_6);
1584 vmc->disallow_affinity_adjustment = true;
1586 DEFINE_VIRT_MACHINE(2, 6)