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 "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/vfio/vfio-calxeda-xgmac.h" 38 #include "hw/vfio/vfio-amd-xgbe.h" 39 #include "hw/devices.h" 40 #include "net/net.h" 41 #include "sysemu/device_tree.h" 42 #include "sysemu/numa.h" 43 #include "sysemu/sysemu.h" 44 #include "sysemu/kvm.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/sysbus-fdt.h" 52 #include "hw/platform-bus.h" 53 #include "hw/arm/fdt.h" 54 #include "hw/intc/arm_gic.h" 55 #include "hw/intc/arm_gicv3_common.h" 56 #include "kvm_arm.h" 57 #include "hw/smbios/smbios.h" 58 #include "qapi/visitor.h" 59 #include "standard-headers/linux/input.h" 60 #include "hw/arm/smmuv3.h" 61 62 #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \ 63 static void virt_##major##_##minor##_class_init(ObjectClass *oc, \ 64 void *data) \ 65 { \ 66 MachineClass *mc = MACHINE_CLASS(oc); \ 67 virt_machine_##major##_##minor##_options(mc); \ 68 mc->desc = "QEMU " # major "." # minor " ARM Virtual Machine"; \ 69 if (latest) { \ 70 mc->alias = "virt"; \ 71 } \ 72 } \ 73 static const TypeInfo machvirt_##major##_##minor##_info = { \ 74 .name = MACHINE_TYPE_NAME("virt-" # major "." # minor), \ 75 .parent = TYPE_VIRT_MACHINE, \ 76 .instance_init = virt_##major##_##minor##_instance_init, \ 77 .class_init = virt_##major##_##minor##_class_init, \ 78 }; \ 79 static void machvirt_machine_##major##_##minor##_init(void) \ 80 { \ 81 type_register_static(&machvirt_##major##_##minor##_info); \ 82 } \ 83 type_init(machvirt_machine_##major##_##minor##_init); 84 85 #define DEFINE_VIRT_MACHINE_AS_LATEST(major, minor) \ 86 DEFINE_VIRT_MACHINE_LATEST(major, minor, true) 87 #define DEFINE_VIRT_MACHINE(major, minor) \ 88 DEFINE_VIRT_MACHINE_LATEST(major, minor, false) 89 90 91 /* Number of external interrupt lines to configure the GIC with */ 92 #define NUM_IRQS 256 93 94 #define PLATFORM_BUS_NUM_IRQS 64 95 96 /* RAM limit in GB. Since VIRT_MEM starts at the 1GB mark, this means 97 * RAM can go up to the 256GB mark, leaving 256GB of the physical 98 * address space unallocated and free for future use between 256G and 512G. 99 * If we need to provide more RAM to VMs in the future then we need to: 100 * * allocate a second bank of RAM starting at 2TB and working up 101 * * fix the DT and ACPI table generation code in QEMU to correctly 102 * report two split lumps of RAM to the guest 103 * * fix KVM in the host kernel to allow guests with >40 bit address spaces 104 * (We don't want to fill all the way up to 512GB with RAM because 105 * we might want it for non-RAM purposes later. Conversely it seems 106 * reasonable to assume that anybody configuring a VM with a quarter 107 * of a terabyte of RAM will be doing it on a host with more than a 108 * terabyte of physical address space.) 109 */ 110 #define RAMLIMIT_GB 255 111 #define RAMLIMIT_BYTES (RAMLIMIT_GB * 1024ULL * 1024 * 1024) 112 113 /* Addresses and sizes of our components. 114 * 0..128MB is space for a flash device so we can run bootrom code such as UEFI. 115 * 128MB..256MB is used for miscellaneous device I/O. 116 * 256MB..1GB is reserved for possible future PCI support (ie where the 117 * PCI memory window will go if we add a PCI host controller). 118 * 1GB and up is RAM (which may happily spill over into the 119 * high memory region beyond 4GB). 120 * This represents a compromise between how much RAM can be given to 121 * a 32 bit VM and leaving space for expansion and in particular for PCI. 122 * Note that devices should generally be placed at multiples of 0x10000, 123 * to accommodate guests using 64K pages. 124 */ 125 static const MemMapEntry a15memmap[] = { 126 /* Space up to 0x8000000 is reserved for a boot ROM */ 127 [VIRT_FLASH] = { 0, 0x08000000 }, 128 [VIRT_CPUPERIPHS] = { 0x08000000, 0x00020000 }, 129 /* GIC distributor and CPU interfaces sit inside the CPU peripheral space */ 130 [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 }, 131 [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 }, 132 [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 }, 133 /* The space in between here is reserved for GICv3 CPU/vCPU/HYP */ 134 [VIRT_GIC_ITS] = { 0x08080000, 0x00020000 }, 135 /* This redistributor space allows up to 2*64kB*123 CPUs */ 136 [VIRT_GIC_REDIST] = { 0x080A0000, 0x00F60000 }, 137 [VIRT_UART] = { 0x09000000, 0x00001000 }, 138 [VIRT_RTC] = { 0x09010000, 0x00001000 }, 139 [VIRT_FW_CFG] = { 0x09020000, 0x00000018 }, 140 [VIRT_GPIO] = { 0x09030000, 0x00001000 }, 141 [VIRT_SECURE_UART] = { 0x09040000, 0x00001000 }, 142 [VIRT_SMMU] = { 0x09050000, 0x00020000 }, 143 [VIRT_MMIO] = { 0x0a000000, 0x00000200 }, 144 /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */ 145 [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 }, 146 [VIRT_SECURE_MEM] = { 0x0e000000, 0x01000000 }, 147 [VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 }, 148 [VIRT_PCIE_PIO] = { 0x3eff0000, 0x00010000 }, 149 [VIRT_PCIE_ECAM] = { 0x3f000000, 0x01000000 }, 150 [VIRT_MEM] = { 0x40000000, RAMLIMIT_BYTES }, 151 /* Second PCIe window, 512GB wide at the 512GB boundary */ 152 [VIRT_PCIE_MMIO_HIGH] = { 0x8000000000ULL, 0x8000000000ULL }, 153 }; 154 155 static const int a15irqmap[] = { 156 [VIRT_UART] = 1, 157 [VIRT_RTC] = 2, 158 [VIRT_PCIE] = 3, /* ... to 6 */ 159 [VIRT_GPIO] = 7, 160 [VIRT_SECURE_UART] = 8, 161 [VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */ 162 [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */ 163 [VIRT_SMMU] = 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */ 164 [VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */ 165 }; 166 167 static const char *valid_cpus[] = { 168 ARM_CPU_TYPE_NAME("cortex-a15"), 169 ARM_CPU_TYPE_NAME("cortex-a53"), 170 ARM_CPU_TYPE_NAME("cortex-a57"), 171 ARM_CPU_TYPE_NAME("host"), 172 ARM_CPU_TYPE_NAME("max"), 173 }; 174 175 static bool cpu_type_valid(const char *cpu) 176 { 177 int i; 178 179 for (i = 0; i < ARRAY_SIZE(valid_cpus); i++) { 180 if (strcmp(cpu, valid_cpus[i]) == 0) { 181 return true; 182 } 183 } 184 return false; 185 } 186 187 static void create_fdt(VirtMachineState *vms) 188 { 189 void *fdt = create_device_tree(&vms->fdt_size); 190 191 if (!fdt) { 192 error_report("create_device_tree() failed"); 193 exit(1); 194 } 195 196 vms->fdt = fdt; 197 198 /* Header */ 199 qemu_fdt_setprop_string(fdt, "/", "compatible", "linux,dummy-virt"); 200 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); 201 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); 202 203 /* 204 * /chosen and /memory nodes must exist for load_dtb 205 * to fill in necessary properties later 206 */ 207 qemu_fdt_add_subnode(fdt, "/chosen"); 208 qemu_fdt_add_subnode(fdt, "/memory"); 209 qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory"); 210 211 /* Clock node, for the benefit of the UART. The kernel device tree 212 * binding documentation claims the PL011 node clock properties are 213 * optional but in practice if you omit them the kernel refuses to 214 * probe for the device. 215 */ 216 vms->clock_phandle = qemu_fdt_alloc_phandle(fdt); 217 qemu_fdt_add_subnode(fdt, "/apb-pclk"); 218 qemu_fdt_setprop_string(fdt, "/apb-pclk", "compatible", "fixed-clock"); 219 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "#clock-cells", 0x0); 220 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "clock-frequency", 24000000); 221 qemu_fdt_setprop_string(fdt, "/apb-pclk", "clock-output-names", 222 "clk24mhz"); 223 qemu_fdt_setprop_cell(fdt, "/apb-pclk", "phandle", vms->clock_phandle); 224 225 if (have_numa_distance) { 226 int size = nb_numa_nodes * nb_numa_nodes * 3 * sizeof(uint32_t); 227 uint32_t *matrix = g_malloc0(size); 228 int idx, i, j; 229 230 for (i = 0; i < nb_numa_nodes; i++) { 231 for (j = 0; j < nb_numa_nodes; j++) { 232 idx = (i * nb_numa_nodes + j) * 3; 233 matrix[idx + 0] = cpu_to_be32(i); 234 matrix[idx + 1] = cpu_to_be32(j); 235 matrix[idx + 2] = cpu_to_be32(numa_info[i].distance[j]); 236 } 237 } 238 239 qemu_fdt_add_subnode(fdt, "/distance-map"); 240 qemu_fdt_setprop_string(fdt, "/distance-map", "compatible", 241 "numa-distance-map-v1"); 242 qemu_fdt_setprop(fdt, "/distance-map", "distance-matrix", 243 matrix, size); 244 g_free(matrix); 245 } 246 } 247 248 static void fdt_add_timer_nodes(const VirtMachineState *vms) 249 { 250 /* On real hardware these interrupts are level-triggered. 251 * On KVM they were edge-triggered before host kernel version 4.4, 252 * and level-triggered afterwards. 253 * On emulated QEMU they are level-triggered. 254 * 255 * Getting the DTB info about them wrong is awkward for some 256 * guest kernels: 257 * pre-4.8 ignore the DT and leave the interrupt configured 258 * with whatever the GIC reset value (or the bootloader) left it at 259 * 4.8 before rc6 honour the incorrect data by programming it back 260 * into the GIC, causing problems 261 * 4.8rc6 and later ignore the DT and always write "level triggered" 262 * into the GIC 263 * 264 * For backwards-compatibility, virt-2.8 and earlier will continue 265 * to say these are edge-triggered, but later machines will report 266 * the correct information. 267 */ 268 ARMCPU *armcpu; 269 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 270 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI; 271 272 if (vmc->claim_edge_triggered_timers) { 273 irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI; 274 } 275 276 if (vms->gic_version == 2) { 277 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, 278 GIC_FDT_IRQ_PPI_CPU_WIDTH, 279 (1 << vms->smp_cpus) - 1); 280 } 281 282 qemu_fdt_add_subnode(vms->fdt, "/timer"); 283 284 armcpu = ARM_CPU(qemu_get_cpu(0)); 285 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { 286 const char compat[] = "arm,armv8-timer\0arm,armv7-timer"; 287 qemu_fdt_setprop(vms->fdt, "/timer", "compatible", 288 compat, sizeof(compat)); 289 } else { 290 qemu_fdt_setprop_string(vms->fdt, "/timer", "compatible", 291 "arm,armv7-timer"); 292 } 293 qemu_fdt_setprop(vms->fdt, "/timer", "always-on", NULL, 0); 294 qemu_fdt_setprop_cells(vms->fdt, "/timer", "interrupts", 295 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_S_EL1_IRQ, irqflags, 296 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_NS_EL1_IRQ, irqflags, 297 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_VIRT_IRQ, irqflags, 298 GIC_FDT_IRQ_TYPE_PPI, ARCH_TIMER_NS_EL2_IRQ, irqflags); 299 } 300 301 static void fdt_add_cpu_nodes(const VirtMachineState *vms) 302 { 303 int cpu; 304 int addr_cells = 1; 305 const MachineState *ms = MACHINE(vms); 306 307 /* 308 * From Documentation/devicetree/bindings/arm/cpus.txt 309 * On ARM v8 64-bit systems value should be set to 2, 310 * that corresponds to the MPIDR_EL1 register size. 311 * If MPIDR_EL1[63:32] value is equal to 0 on all CPUs 312 * in the system, #address-cells can be set to 1, since 313 * MPIDR_EL1[63:32] bits are not used for CPUs 314 * identification. 315 * 316 * Here we actually don't know whether our system is 32- or 64-bit one. 317 * The simplest way to go is to examine affinity IDs of all our CPUs. If 318 * at least one of them has Aff3 populated, we set #address-cells to 2. 319 */ 320 for (cpu = 0; cpu < vms->smp_cpus; cpu++) { 321 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu)); 322 323 if (armcpu->mp_affinity & ARM_AFF3_MASK) { 324 addr_cells = 2; 325 break; 326 } 327 } 328 329 qemu_fdt_add_subnode(vms->fdt, "/cpus"); 330 qemu_fdt_setprop_cell(vms->fdt, "/cpus", "#address-cells", addr_cells); 331 qemu_fdt_setprop_cell(vms->fdt, "/cpus", "#size-cells", 0x0); 332 333 for (cpu = vms->smp_cpus - 1; cpu >= 0; cpu--) { 334 char *nodename = g_strdup_printf("/cpus/cpu@%d", cpu); 335 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(cpu)); 336 CPUState *cs = CPU(armcpu); 337 338 qemu_fdt_add_subnode(vms->fdt, nodename); 339 qemu_fdt_setprop_string(vms->fdt, nodename, "device_type", "cpu"); 340 qemu_fdt_setprop_string(vms->fdt, nodename, "compatible", 341 armcpu->dtb_compatible); 342 343 if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED 344 && vms->smp_cpus > 1) { 345 qemu_fdt_setprop_string(vms->fdt, nodename, 346 "enable-method", "psci"); 347 } 348 349 if (addr_cells == 2) { 350 qemu_fdt_setprop_u64(vms->fdt, nodename, "reg", 351 armcpu->mp_affinity); 352 } else { 353 qemu_fdt_setprop_cell(vms->fdt, nodename, "reg", 354 armcpu->mp_affinity); 355 } 356 357 if (ms->possible_cpus->cpus[cs->cpu_index].props.has_node_id) { 358 qemu_fdt_setprop_cell(vms->fdt, nodename, "numa-node-id", 359 ms->possible_cpus->cpus[cs->cpu_index].props.node_id); 360 } 361 362 g_free(nodename); 363 } 364 } 365 366 static void fdt_add_its_gic_node(VirtMachineState *vms) 367 { 368 vms->msi_phandle = qemu_fdt_alloc_phandle(vms->fdt); 369 qemu_fdt_add_subnode(vms->fdt, "/intc/its"); 370 qemu_fdt_setprop_string(vms->fdt, "/intc/its", "compatible", 371 "arm,gic-v3-its"); 372 qemu_fdt_setprop(vms->fdt, "/intc/its", "msi-controller", NULL, 0); 373 qemu_fdt_setprop_sized_cells(vms->fdt, "/intc/its", "reg", 374 2, vms->memmap[VIRT_GIC_ITS].base, 375 2, vms->memmap[VIRT_GIC_ITS].size); 376 qemu_fdt_setprop_cell(vms->fdt, "/intc/its", "phandle", vms->msi_phandle); 377 } 378 379 static void fdt_add_v2m_gic_node(VirtMachineState *vms) 380 { 381 vms->msi_phandle = qemu_fdt_alloc_phandle(vms->fdt); 382 qemu_fdt_add_subnode(vms->fdt, "/intc/v2m"); 383 qemu_fdt_setprop_string(vms->fdt, "/intc/v2m", "compatible", 384 "arm,gic-v2m-frame"); 385 qemu_fdt_setprop(vms->fdt, "/intc/v2m", "msi-controller", NULL, 0); 386 qemu_fdt_setprop_sized_cells(vms->fdt, "/intc/v2m", "reg", 387 2, vms->memmap[VIRT_GIC_V2M].base, 388 2, vms->memmap[VIRT_GIC_V2M].size); 389 qemu_fdt_setprop_cell(vms->fdt, "/intc/v2m", "phandle", vms->msi_phandle); 390 } 391 392 static void fdt_add_gic_node(VirtMachineState *vms) 393 { 394 vms->gic_phandle = qemu_fdt_alloc_phandle(vms->fdt); 395 qemu_fdt_setprop_cell(vms->fdt, "/", "interrupt-parent", vms->gic_phandle); 396 397 qemu_fdt_add_subnode(vms->fdt, "/intc"); 398 qemu_fdt_setprop_cell(vms->fdt, "/intc", "#interrupt-cells", 3); 399 qemu_fdt_setprop(vms->fdt, "/intc", "interrupt-controller", NULL, 0); 400 qemu_fdt_setprop_cell(vms->fdt, "/intc", "#address-cells", 0x2); 401 qemu_fdt_setprop_cell(vms->fdt, "/intc", "#size-cells", 0x2); 402 qemu_fdt_setprop(vms->fdt, "/intc", "ranges", NULL, 0); 403 if (vms->gic_version == 3) { 404 qemu_fdt_setprop_string(vms->fdt, "/intc", "compatible", 405 "arm,gic-v3"); 406 qemu_fdt_setprop_sized_cells(vms->fdt, "/intc", "reg", 407 2, vms->memmap[VIRT_GIC_DIST].base, 408 2, vms->memmap[VIRT_GIC_DIST].size, 409 2, vms->memmap[VIRT_GIC_REDIST].base, 410 2, vms->memmap[VIRT_GIC_REDIST].size); 411 if (vms->virt) { 412 qemu_fdt_setprop_cells(vms->fdt, "/intc", "interrupts", 413 GIC_FDT_IRQ_TYPE_PPI, ARCH_GICV3_MAINT_IRQ, 414 GIC_FDT_IRQ_FLAGS_LEVEL_HI); 415 } 416 } else { 417 /* 'cortex-a15-gic' means 'GIC v2' */ 418 qemu_fdt_setprop_string(vms->fdt, "/intc", "compatible", 419 "arm,cortex-a15-gic"); 420 qemu_fdt_setprop_sized_cells(vms->fdt, "/intc", "reg", 421 2, vms->memmap[VIRT_GIC_DIST].base, 422 2, vms->memmap[VIRT_GIC_DIST].size, 423 2, vms->memmap[VIRT_GIC_CPU].base, 424 2, vms->memmap[VIRT_GIC_CPU].size); 425 } 426 427 qemu_fdt_setprop_cell(vms->fdt, "/intc", "phandle", vms->gic_phandle); 428 } 429 430 static void fdt_add_pmu_nodes(const VirtMachineState *vms) 431 { 432 CPUState *cpu; 433 ARMCPU *armcpu; 434 uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI; 435 436 CPU_FOREACH(cpu) { 437 armcpu = ARM_CPU(cpu); 438 if (!arm_feature(&armcpu->env, ARM_FEATURE_PMU)) { 439 return; 440 } 441 if (kvm_enabled()) { 442 if (kvm_irqchip_in_kernel()) { 443 kvm_arm_pmu_set_irq(cpu, PPI(VIRTUAL_PMU_IRQ)); 444 } 445 kvm_arm_pmu_init(cpu); 446 } 447 } 448 449 if (vms->gic_version == 2) { 450 irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, 451 GIC_FDT_IRQ_PPI_CPU_WIDTH, 452 (1 << vms->smp_cpus) - 1); 453 } 454 455 armcpu = ARM_CPU(qemu_get_cpu(0)); 456 qemu_fdt_add_subnode(vms->fdt, "/pmu"); 457 if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { 458 const char compat[] = "arm,armv8-pmuv3"; 459 qemu_fdt_setprop(vms->fdt, "/pmu", "compatible", 460 compat, sizeof(compat)); 461 qemu_fdt_setprop_cells(vms->fdt, "/pmu", "interrupts", 462 GIC_FDT_IRQ_TYPE_PPI, VIRTUAL_PMU_IRQ, irqflags); 463 } 464 } 465 466 static void create_its(VirtMachineState *vms, DeviceState *gicdev) 467 { 468 const char *itsclass = its_class_name(); 469 DeviceState *dev; 470 471 if (!itsclass) { 472 /* Do nothing if not supported */ 473 return; 474 } 475 476 dev = qdev_create(NULL, itsclass); 477 478 object_property_set_link(OBJECT(dev), OBJECT(gicdev), "parent-gicv3", 479 &error_abort); 480 qdev_init_nofail(dev); 481 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_GIC_ITS].base); 482 483 fdt_add_its_gic_node(vms); 484 } 485 486 static void create_v2m(VirtMachineState *vms, qemu_irq *pic) 487 { 488 int i; 489 int irq = vms->irqmap[VIRT_GIC_V2M]; 490 DeviceState *dev; 491 492 dev = qdev_create(NULL, "arm-gicv2m"); 493 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_GIC_V2M].base); 494 qdev_prop_set_uint32(dev, "base-spi", irq); 495 qdev_prop_set_uint32(dev, "num-spi", NUM_GICV2M_SPIS); 496 qdev_init_nofail(dev); 497 498 for (i = 0; i < NUM_GICV2M_SPIS; i++) { 499 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]); 500 } 501 502 fdt_add_v2m_gic_node(vms); 503 } 504 505 static void create_gic(VirtMachineState *vms, qemu_irq *pic) 506 { 507 /* We create a standalone GIC */ 508 DeviceState *gicdev; 509 SysBusDevice *gicbusdev; 510 const char *gictype; 511 int type = vms->gic_version, i; 512 513 gictype = (type == 3) ? gicv3_class_name() : gic_class_name(); 514 515 gicdev = qdev_create(NULL, gictype); 516 qdev_prop_set_uint32(gicdev, "revision", type); 517 qdev_prop_set_uint32(gicdev, "num-cpu", smp_cpus); 518 /* Note that the num-irq property counts both internal and external 519 * interrupts; there are always 32 of the former (mandated by GIC spec). 520 */ 521 qdev_prop_set_uint32(gicdev, "num-irq", NUM_IRQS + 32); 522 if (!kvm_irqchip_in_kernel()) { 523 qdev_prop_set_bit(gicdev, "has-security-extensions", vms->secure); 524 } 525 qdev_init_nofail(gicdev); 526 gicbusdev = SYS_BUS_DEVICE(gicdev); 527 sysbus_mmio_map(gicbusdev, 0, vms->memmap[VIRT_GIC_DIST].base); 528 if (type == 3) { 529 sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_REDIST].base); 530 } else { 531 sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_CPU].base); 532 } 533 534 /* Wire the outputs from each CPU's generic timer and the GICv3 535 * maintenance interrupt signal to the appropriate GIC PPI inputs, 536 * and the GIC's IRQ/FIQ/VIRQ/VFIQ interrupt outputs to the CPU's inputs. 537 */ 538 for (i = 0; i < smp_cpus; i++) { 539 DeviceState *cpudev = DEVICE(qemu_get_cpu(i)); 540 int ppibase = NUM_IRQS + i * GIC_INTERNAL + GIC_NR_SGIS; 541 int irq; 542 /* Mapping from the output timer irq lines from the CPU to the 543 * GIC PPI inputs we use for the virt board. 544 */ 545 const int timer_irq[] = { 546 [GTIMER_PHYS] = ARCH_TIMER_NS_EL1_IRQ, 547 [GTIMER_VIRT] = ARCH_TIMER_VIRT_IRQ, 548 [GTIMER_HYP] = ARCH_TIMER_NS_EL2_IRQ, 549 [GTIMER_SEC] = ARCH_TIMER_S_EL1_IRQ, 550 }; 551 552 for (irq = 0; irq < ARRAY_SIZE(timer_irq); irq++) { 553 qdev_connect_gpio_out(cpudev, irq, 554 qdev_get_gpio_in(gicdev, 555 ppibase + timer_irq[irq])); 556 } 557 558 qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt", 0, 559 qdev_get_gpio_in(gicdev, ppibase 560 + ARCH_GICV3_MAINT_IRQ)); 561 qdev_connect_gpio_out_named(cpudev, "pmu-interrupt", 0, 562 qdev_get_gpio_in(gicdev, ppibase 563 + VIRTUAL_PMU_IRQ)); 564 565 sysbus_connect_irq(gicbusdev, i, qdev_get_gpio_in(cpudev, ARM_CPU_IRQ)); 566 sysbus_connect_irq(gicbusdev, i + smp_cpus, 567 qdev_get_gpio_in(cpudev, ARM_CPU_FIQ)); 568 sysbus_connect_irq(gicbusdev, i + 2 * smp_cpus, 569 qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ)); 570 sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus, 571 qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ)); 572 } 573 574 for (i = 0; i < NUM_IRQS; i++) { 575 pic[i] = qdev_get_gpio_in(gicdev, i); 576 } 577 578 fdt_add_gic_node(vms); 579 580 if (type == 3 && vms->its) { 581 create_its(vms, gicdev); 582 } else if (type == 2) { 583 create_v2m(vms, pic); 584 } 585 } 586 587 static void create_uart(const VirtMachineState *vms, qemu_irq *pic, int uart, 588 MemoryRegion *mem, Chardev *chr) 589 { 590 char *nodename; 591 hwaddr base = vms->memmap[uart].base; 592 hwaddr size = vms->memmap[uart].size; 593 int irq = vms->irqmap[uart]; 594 const char compat[] = "arm,pl011\0arm,primecell"; 595 const char clocknames[] = "uartclk\0apb_pclk"; 596 DeviceState *dev = qdev_create(NULL, "pl011"); 597 SysBusDevice *s = SYS_BUS_DEVICE(dev); 598 599 qdev_prop_set_chr(dev, "chardev", chr); 600 qdev_init_nofail(dev); 601 memory_region_add_subregion(mem, base, 602 sysbus_mmio_get_region(s, 0)); 603 sysbus_connect_irq(s, 0, pic[irq]); 604 605 nodename = g_strdup_printf("/pl011@%" PRIx64, base); 606 qemu_fdt_add_subnode(vms->fdt, nodename); 607 /* Note that we can't use setprop_string because of the embedded NUL */ 608 qemu_fdt_setprop(vms->fdt, nodename, "compatible", 609 compat, sizeof(compat)); 610 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 611 2, base, 2, size); 612 qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupts", 613 GIC_FDT_IRQ_TYPE_SPI, irq, 614 GIC_FDT_IRQ_FLAGS_LEVEL_HI); 615 qemu_fdt_setprop_cells(vms->fdt, nodename, "clocks", 616 vms->clock_phandle, vms->clock_phandle); 617 qemu_fdt_setprop(vms->fdt, nodename, "clock-names", 618 clocknames, sizeof(clocknames)); 619 620 if (uart == VIRT_UART) { 621 qemu_fdt_setprop_string(vms->fdt, "/chosen", "stdout-path", nodename); 622 } else { 623 /* Mark as not usable by the normal world */ 624 qemu_fdt_setprop_string(vms->fdt, nodename, "status", "disabled"); 625 qemu_fdt_setprop_string(vms->fdt, nodename, "secure-status", "okay"); 626 } 627 628 g_free(nodename); 629 } 630 631 static void create_rtc(const VirtMachineState *vms, qemu_irq *pic) 632 { 633 char *nodename; 634 hwaddr base = vms->memmap[VIRT_RTC].base; 635 hwaddr size = vms->memmap[VIRT_RTC].size; 636 int irq = vms->irqmap[VIRT_RTC]; 637 const char compat[] = "arm,pl031\0arm,primecell"; 638 639 sysbus_create_simple("pl031", base, pic[irq]); 640 641 nodename = g_strdup_printf("/pl031@%" PRIx64, base); 642 qemu_fdt_add_subnode(vms->fdt, nodename); 643 qemu_fdt_setprop(vms->fdt, nodename, "compatible", compat, sizeof(compat)); 644 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 645 2, base, 2, size); 646 qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupts", 647 GIC_FDT_IRQ_TYPE_SPI, irq, 648 GIC_FDT_IRQ_FLAGS_LEVEL_HI); 649 qemu_fdt_setprop_cell(vms->fdt, nodename, "clocks", vms->clock_phandle); 650 qemu_fdt_setprop_string(vms->fdt, nodename, "clock-names", "apb_pclk"); 651 g_free(nodename); 652 } 653 654 static DeviceState *gpio_key_dev; 655 static void virt_powerdown_req(Notifier *n, void *opaque) 656 { 657 /* use gpio Pin 3 for power button event */ 658 qemu_set_irq(qdev_get_gpio_in(gpio_key_dev, 0), 1); 659 } 660 661 static Notifier virt_system_powerdown_notifier = { 662 .notify = virt_powerdown_req 663 }; 664 665 static void create_gpio(const VirtMachineState *vms, qemu_irq *pic) 666 { 667 char *nodename; 668 DeviceState *pl061_dev; 669 hwaddr base = vms->memmap[VIRT_GPIO].base; 670 hwaddr size = vms->memmap[VIRT_GPIO].size; 671 int irq = vms->irqmap[VIRT_GPIO]; 672 const char compat[] = "arm,pl061\0arm,primecell"; 673 674 pl061_dev = sysbus_create_simple("pl061", base, pic[irq]); 675 676 uint32_t phandle = qemu_fdt_alloc_phandle(vms->fdt); 677 nodename = g_strdup_printf("/pl061@%" PRIx64, base); 678 qemu_fdt_add_subnode(vms->fdt, nodename); 679 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 680 2, base, 2, size); 681 qemu_fdt_setprop(vms->fdt, nodename, "compatible", compat, sizeof(compat)); 682 qemu_fdt_setprop_cell(vms->fdt, nodename, "#gpio-cells", 2); 683 qemu_fdt_setprop(vms->fdt, nodename, "gpio-controller", NULL, 0); 684 qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupts", 685 GIC_FDT_IRQ_TYPE_SPI, irq, 686 GIC_FDT_IRQ_FLAGS_LEVEL_HI); 687 qemu_fdt_setprop_cell(vms->fdt, nodename, "clocks", vms->clock_phandle); 688 qemu_fdt_setprop_string(vms->fdt, nodename, "clock-names", "apb_pclk"); 689 qemu_fdt_setprop_cell(vms->fdt, nodename, "phandle", phandle); 690 691 gpio_key_dev = sysbus_create_simple("gpio-key", -1, 692 qdev_get_gpio_in(pl061_dev, 3)); 693 qemu_fdt_add_subnode(vms->fdt, "/gpio-keys"); 694 qemu_fdt_setprop_string(vms->fdt, "/gpio-keys", "compatible", "gpio-keys"); 695 qemu_fdt_setprop_cell(vms->fdt, "/gpio-keys", "#size-cells", 0); 696 qemu_fdt_setprop_cell(vms->fdt, "/gpio-keys", "#address-cells", 1); 697 698 qemu_fdt_add_subnode(vms->fdt, "/gpio-keys/poweroff"); 699 qemu_fdt_setprop_string(vms->fdt, "/gpio-keys/poweroff", 700 "label", "GPIO Key Poweroff"); 701 qemu_fdt_setprop_cell(vms->fdt, "/gpio-keys/poweroff", "linux,code", 702 KEY_POWER); 703 qemu_fdt_setprop_cells(vms->fdt, "/gpio-keys/poweroff", 704 "gpios", phandle, 3, 0); 705 706 /* connect powerdown request */ 707 qemu_register_powerdown_notifier(&virt_system_powerdown_notifier); 708 709 g_free(nodename); 710 } 711 712 static void create_virtio_devices(const VirtMachineState *vms, qemu_irq *pic) 713 { 714 int i; 715 hwaddr size = vms->memmap[VIRT_MMIO].size; 716 717 /* We create the transports in forwards order. Since qbus_realize() 718 * prepends (not appends) new child buses, the incrementing loop below will 719 * create a list of virtio-mmio buses with decreasing base addresses. 720 * 721 * When a -device option is processed from the command line, 722 * qbus_find_recursive() picks the next free virtio-mmio bus in forwards 723 * order. The upshot is that -device options in increasing command line 724 * order are mapped to virtio-mmio buses with decreasing base addresses. 725 * 726 * When this code was originally written, that arrangement ensured that the 727 * guest Linux kernel would give the lowest "name" (/dev/vda, eth0, etc) to 728 * the first -device on the command line. (The end-to-end order is a 729 * function of this loop, qbus_realize(), qbus_find_recursive(), and the 730 * guest kernel's name-to-address assignment strategy.) 731 * 732 * Meanwhile, the kernel's traversal seems to have been reversed; see eg. 733 * the message, if not necessarily the code, of commit 70161ff336. 734 * Therefore the loop now establishes the inverse of the original intent. 735 * 736 * Unfortunately, we can't counteract the kernel change by reversing the 737 * loop; it would break existing command lines. 738 * 739 * In any case, the kernel makes no guarantee about the stability of 740 * enumeration order of virtio devices (as demonstrated by it changing 741 * between kernel versions). For reliable and stable identification 742 * of disks users must use UUIDs or similar mechanisms. 743 */ 744 for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) { 745 int irq = vms->irqmap[VIRT_MMIO] + i; 746 hwaddr base = vms->memmap[VIRT_MMIO].base + i * size; 747 748 sysbus_create_simple("virtio-mmio", base, pic[irq]); 749 } 750 751 /* We add dtb nodes in reverse order so that they appear in the finished 752 * device tree lowest address first. 753 * 754 * Note that this mapping is independent of the loop above. The previous 755 * loop influences virtio device to virtio transport assignment, whereas 756 * this loop controls how virtio transports are laid out in the dtb. 757 */ 758 for (i = NUM_VIRTIO_TRANSPORTS - 1; i >= 0; i--) { 759 char *nodename; 760 int irq = vms->irqmap[VIRT_MMIO] + i; 761 hwaddr base = vms->memmap[VIRT_MMIO].base + i * size; 762 763 nodename = g_strdup_printf("/virtio_mmio@%" PRIx64, base); 764 qemu_fdt_add_subnode(vms->fdt, nodename); 765 qemu_fdt_setprop_string(vms->fdt, nodename, 766 "compatible", "virtio,mmio"); 767 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 768 2, base, 2, size); 769 qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupts", 770 GIC_FDT_IRQ_TYPE_SPI, irq, 771 GIC_FDT_IRQ_FLAGS_EDGE_LO_HI); 772 qemu_fdt_setprop(vms->fdt, nodename, "dma-coherent", NULL, 0); 773 g_free(nodename); 774 } 775 } 776 777 static void create_one_flash(const char *name, hwaddr flashbase, 778 hwaddr flashsize, const char *file, 779 MemoryRegion *sysmem) 780 { 781 /* Create and map a single flash device. We use the same 782 * parameters as the flash devices on the Versatile Express board. 783 */ 784 DriveInfo *dinfo = drive_get_next(IF_PFLASH); 785 DeviceState *dev = qdev_create(NULL, "cfi.pflash01"); 786 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 787 const uint64_t sectorlength = 256 * 1024; 788 789 if (dinfo) { 790 qdev_prop_set_drive(dev, "drive", blk_by_legacy_dinfo(dinfo), 791 &error_abort); 792 } 793 794 qdev_prop_set_uint32(dev, "num-blocks", flashsize / sectorlength); 795 qdev_prop_set_uint64(dev, "sector-length", sectorlength); 796 qdev_prop_set_uint8(dev, "width", 4); 797 qdev_prop_set_uint8(dev, "device-width", 2); 798 qdev_prop_set_bit(dev, "big-endian", false); 799 qdev_prop_set_uint16(dev, "id0", 0x89); 800 qdev_prop_set_uint16(dev, "id1", 0x18); 801 qdev_prop_set_uint16(dev, "id2", 0x00); 802 qdev_prop_set_uint16(dev, "id3", 0x00); 803 qdev_prop_set_string(dev, "name", name); 804 qdev_init_nofail(dev); 805 806 memory_region_add_subregion(sysmem, flashbase, 807 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0)); 808 809 if (file) { 810 char *fn; 811 int image_size; 812 813 if (drive_get(IF_PFLASH, 0, 0)) { 814 error_report("The contents of the first flash device may be " 815 "specified with -bios or with -drive if=pflash... " 816 "but you cannot use both options at once"); 817 exit(1); 818 } 819 fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, file); 820 if (!fn) { 821 error_report("Could not find ROM image '%s'", file); 822 exit(1); 823 } 824 image_size = load_image_mr(fn, sysbus_mmio_get_region(sbd, 0)); 825 g_free(fn); 826 if (image_size < 0) { 827 error_report("Could not load ROM image '%s'", file); 828 exit(1); 829 } 830 } 831 } 832 833 static void create_flash(const VirtMachineState *vms, 834 MemoryRegion *sysmem, 835 MemoryRegion *secure_sysmem) 836 { 837 /* Create two flash devices to fill the VIRT_FLASH space in the memmap. 838 * Any file passed via -bios goes in the first of these. 839 * sysmem is the system memory space. secure_sysmem is the secure view 840 * of the system, and the first flash device should be made visible only 841 * there. The second flash device is visible to both secure and nonsecure. 842 * If sysmem == secure_sysmem this means there is no separate Secure 843 * address space and both flash devices are generally visible. 844 */ 845 hwaddr flashsize = vms->memmap[VIRT_FLASH].size / 2; 846 hwaddr flashbase = vms->memmap[VIRT_FLASH].base; 847 char *nodename; 848 849 create_one_flash("virt.flash0", flashbase, flashsize, 850 bios_name, secure_sysmem); 851 create_one_flash("virt.flash1", flashbase + flashsize, flashsize, 852 NULL, sysmem); 853 854 if (sysmem == secure_sysmem) { 855 /* Report both flash devices as a single node in the DT */ 856 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase); 857 qemu_fdt_add_subnode(vms->fdt, nodename); 858 qemu_fdt_setprop_string(vms->fdt, nodename, "compatible", "cfi-flash"); 859 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 860 2, flashbase, 2, flashsize, 861 2, flashbase + flashsize, 2, flashsize); 862 qemu_fdt_setprop_cell(vms->fdt, nodename, "bank-width", 4); 863 g_free(nodename); 864 } else { 865 /* Report the devices as separate nodes so we can mark one as 866 * only visible to the secure world. 867 */ 868 nodename = g_strdup_printf("/secflash@%" PRIx64, flashbase); 869 qemu_fdt_add_subnode(vms->fdt, nodename); 870 qemu_fdt_setprop_string(vms->fdt, nodename, "compatible", "cfi-flash"); 871 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 872 2, flashbase, 2, flashsize); 873 qemu_fdt_setprop_cell(vms->fdt, nodename, "bank-width", 4); 874 qemu_fdt_setprop_string(vms->fdt, nodename, "status", "disabled"); 875 qemu_fdt_setprop_string(vms->fdt, nodename, "secure-status", "okay"); 876 g_free(nodename); 877 878 nodename = g_strdup_printf("/flash@%" PRIx64, flashbase); 879 qemu_fdt_add_subnode(vms->fdt, nodename); 880 qemu_fdt_setprop_string(vms->fdt, nodename, "compatible", "cfi-flash"); 881 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 882 2, flashbase + flashsize, 2, flashsize); 883 qemu_fdt_setprop_cell(vms->fdt, nodename, "bank-width", 4); 884 g_free(nodename); 885 } 886 } 887 888 static FWCfgState *create_fw_cfg(const VirtMachineState *vms, AddressSpace *as) 889 { 890 hwaddr base = vms->memmap[VIRT_FW_CFG].base; 891 hwaddr size = vms->memmap[VIRT_FW_CFG].size; 892 FWCfgState *fw_cfg; 893 char *nodename; 894 895 fw_cfg = fw_cfg_init_mem_wide(base + 8, base, 8, base + 16, as); 896 fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus); 897 898 nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base); 899 qemu_fdt_add_subnode(vms->fdt, nodename); 900 qemu_fdt_setprop_string(vms->fdt, nodename, 901 "compatible", "qemu,fw-cfg-mmio"); 902 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 903 2, base, 2, size); 904 qemu_fdt_setprop(vms->fdt, nodename, "dma-coherent", NULL, 0); 905 g_free(nodename); 906 return fw_cfg; 907 } 908 909 static void create_pcie_irq_map(const VirtMachineState *vms, 910 uint32_t gic_phandle, 911 int first_irq, const char *nodename) 912 { 913 int devfn, pin; 914 uint32_t full_irq_map[4 * 4 * 10] = { 0 }; 915 uint32_t *irq_map = full_irq_map; 916 917 for (devfn = 0; devfn <= 0x18; devfn += 0x8) { 918 for (pin = 0; pin < 4; pin++) { 919 int irq_type = GIC_FDT_IRQ_TYPE_SPI; 920 int irq_nr = first_irq + ((pin + PCI_SLOT(devfn)) % PCI_NUM_PINS); 921 int irq_level = GIC_FDT_IRQ_FLAGS_LEVEL_HI; 922 int i; 923 924 uint32_t map[] = { 925 devfn << 8, 0, 0, /* devfn */ 926 pin + 1, /* PCI pin */ 927 gic_phandle, 0, 0, irq_type, irq_nr, irq_level }; /* GIC irq */ 928 929 /* Convert map to big endian */ 930 for (i = 0; i < 10; i++) { 931 irq_map[i] = cpu_to_be32(map[i]); 932 } 933 irq_map += 10; 934 } 935 } 936 937 qemu_fdt_setprop(vms->fdt, nodename, "interrupt-map", 938 full_irq_map, sizeof(full_irq_map)); 939 940 qemu_fdt_setprop_cells(vms->fdt, nodename, "interrupt-map-mask", 941 0x1800, 0, 0, /* devfn (PCI_SLOT(3)) */ 942 0x7 /* PCI irq */); 943 } 944 945 static void create_smmu(const VirtMachineState *vms, qemu_irq *pic, 946 PCIBus *bus) 947 { 948 char *node; 949 const char compat[] = "arm,smmu-v3"; 950 int irq = vms->irqmap[VIRT_SMMU]; 951 int i; 952 hwaddr base = vms->memmap[VIRT_SMMU].base; 953 hwaddr size = vms->memmap[VIRT_SMMU].size; 954 const char irq_names[] = "eventq\0priq\0cmdq-sync\0gerror"; 955 DeviceState *dev; 956 957 if (vms->iommu != VIRT_IOMMU_SMMUV3 || !vms->iommu_phandle) { 958 return; 959 } 960 961 dev = qdev_create(NULL, "arm-smmuv3"); 962 963 object_property_set_link(OBJECT(dev), OBJECT(bus), "primary-bus", 964 &error_abort); 965 qdev_init_nofail(dev); 966 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); 967 for (i = 0; i < NUM_SMMU_IRQS; i++) { 968 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]); 969 } 970 971 node = g_strdup_printf("/smmuv3@%" PRIx64, base); 972 qemu_fdt_add_subnode(vms->fdt, node); 973 qemu_fdt_setprop(vms->fdt, node, "compatible", compat, sizeof(compat)); 974 qemu_fdt_setprop_sized_cells(vms->fdt, node, "reg", 2, base, 2, size); 975 976 qemu_fdt_setprop_cells(vms->fdt, node, "interrupts", 977 GIC_FDT_IRQ_TYPE_SPI, irq , GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, 978 GIC_FDT_IRQ_TYPE_SPI, irq + 1, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, 979 GIC_FDT_IRQ_TYPE_SPI, irq + 2, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, 980 GIC_FDT_IRQ_TYPE_SPI, irq + 3, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI); 981 982 qemu_fdt_setprop(vms->fdt, node, "interrupt-names", irq_names, 983 sizeof(irq_names)); 984 985 qemu_fdt_setprop_cell(vms->fdt, node, "clocks", vms->clock_phandle); 986 qemu_fdt_setprop_string(vms->fdt, node, "clock-names", "apb_pclk"); 987 qemu_fdt_setprop(vms->fdt, node, "dma-coherent", NULL, 0); 988 989 qemu_fdt_setprop_cell(vms->fdt, node, "#iommu-cells", 1); 990 991 qemu_fdt_setprop_cell(vms->fdt, node, "phandle", vms->iommu_phandle); 992 g_free(node); 993 } 994 995 static void create_pcie(VirtMachineState *vms, qemu_irq *pic) 996 { 997 hwaddr base_mmio = vms->memmap[VIRT_PCIE_MMIO].base; 998 hwaddr size_mmio = vms->memmap[VIRT_PCIE_MMIO].size; 999 hwaddr base_mmio_high = vms->memmap[VIRT_PCIE_MMIO_HIGH].base; 1000 hwaddr size_mmio_high = vms->memmap[VIRT_PCIE_MMIO_HIGH].size; 1001 hwaddr base_pio = vms->memmap[VIRT_PCIE_PIO].base; 1002 hwaddr size_pio = vms->memmap[VIRT_PCIE_PIO].size; 1003 hwaddr base_ecam = vms->memmap[VIRT_PCIE_ECAM].base; 1004 hwaddr size_ecam = vms->memmap[VIRT_PCIE_ECAM].size; 1005 hwaddr base = base_mmio; 1006 int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN; 1007 int irq = vms->irqmap[VIRT_PCIE]; 1008 MemoryRegion *mmio_alias; 1009 MemoryRegion *mmio_reg; 1010 MemoryRegion *ecam_alias; 1011 MemoryRegion *ecam_reg; 1012 DeviceState *dev; 1013 char *nodename; 1014 int i; 1015 PCIHostState *pci; 1016 1017 dev = qdev_create(NULL, TYPE_GPEX_HOST); 1018 qdev_init_nofail(dev); 1019 1020 /* Map only the first size_ecam bytes of ECAM space */ 1021 ecam_alias = g_new0(MemoryRegion, 1); 1022 ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); 1023 memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", 1024 ecam_reg, 0, size_ecam); 1025 memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias); 1026 1027 /* Map the MMIO window into system address space so as to expose 1028 * the section of PCI MMIO space which starts at the same base address 1029 * (ie 1:1 mapping for that part of PCI MMIO space visible through 1030 * the window). 1031 */ 1032 mmio_alias = g_new0(MemoryRegion, 1); 1033 mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); 1034 memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", 1035 mmio_reg, base_mmio, size_mmio); 1036 memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias); 1037 1038 if (vms->highmem) { 1039 /* Map high MMIO space */ 1040 MemoryRegion *high_mmio_alias = g_new0(MemoryRegion, 1); 1041 1042 memory_region_init_alias(high_mmio_alias, OBJECT(dev), "pcie-mmio-high", 1043 mmio_reg, base_mmio_high, size_mmio_high); 1044 memory_region_add_subregion(get_system_memory(), base_mmio_high, 1045 high_mmio_alias); 1046 } 1047 1048 /* Map IO port space */ 1049 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, base_pio); 1050 1051 for (i = 0; i < GPEX_NUM_IRQS; i++) { 1052 sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]); 1053 gpex_set_irq_num(GPEX_HOST(dev), i, irq + i); 1054 } 1055 1056 pci = PCI_HOST_BRIDGE(dev); 1057 if (pci->bus) { 1058 for (i = 0; i < nb_nics; i++) { 1059 NICInfo *nd = &nd_table[i]; 1060 1061 if (!nd->model) { 1062 nd->model = g_strdup("virtio"); 1063 } 1064 1065 pci_nic_init_nofail(nd, pci->bus, nd->model, NULL); 1066 } 1067 } 1068 1069 nodename = g_strdup_printf("/pcie@%" PRIx64, base); 1070 qemu_fdt_add_subnode(vms->fdt, nodename); 1071 qemu_fdt_setprop_string(vms->fdt, nodename, 1072 "compatible", "pci-host-ecam-generic"); 1073 qemu_fdt_setprop_string(vms->fdt, nodename, "device_type", "pci"); 1074 qemu_fdt_setprop_cell(vms->fdt, nodename, "#address-cells", 3); 1075 qemu_fdt_setprop_cell(vms->fdt, nodename, "#size-cells", 2); 1076 qemu_fdt_setprop_cell(vms->fdt, nodename, "linux,pci-domain", 0); 1077 qemu_fdt_setprop_cells(vms->fdt, nodename, "bus-range", 0, 1078 nr_pcie_buses - 1); 1079 qemu_fdt_setprop(vms->fdt, nodename, "dma-coherent", NULL, 0); 1080 1081 if (vms->msi_phandle) { 1082 qemu_fdt_setprop_cells(vms->fdt, nodename, "msi-parent", 1083 vms->msi_phandle); 1084 } 1085 1086 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 1087 2, base_ecam, 2, size_ecam); 1088 1089 if (vms->highmem) { 1090 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "ranges", 1091 1, FDT_PCI_RANGE_IOPORT, 2, 0, 1092 2, base_pio, 2, size_pio, 1093 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, 1094 2, base_mmio, 2, size_mmio, 1095 1, FDT_PCI_RANGE_MMIO_64BIT, 1096 2, base_mmio_high, 1097 2, base_mmio_high, 2, size_mmio_high); 1098 } else { 1099 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "ranges", 1100 1, FDT_PCI_RANGE_IOPORT, 2, 0, 1101 2, base_pio, 2, size_pio, 1102 1, FDT_PCI_RANGE_MMIO, 2, base_mmio, 1103 2, base_mmio, 2, size_mmio); 1104 } 1105 1106 qemu_fdt_setprop_cell(vms->fdt, nodename, "#interrupt-cells", 1); 1107 create_pcie_irq_map(vms, vms->gic_phandle, irq, nodename); 1108 1109 if (vms->iommu) { 1110 vms->iommu_phandle = qemu_fdt_alloc_phandle(vms->fdt); 1111 1112 create_smmu(vms, pic, pci->bus); 1113 1114 qemu_fdt_setprop_cells(vms->fdt, nodename, "iommu-map", 1115 0x0, vms->iommu_phandle, 0x0, 0x10000); 1116 } 1117 1118 g_free(nodename); 1119 } 1120 1121 static void create_platform_bus(VirtMachineState *vms, qemu_irq *pic) 1122 { 1123 DeviceState *dev; 1124 SysBusDevice *s; 1125 int i; 1126 MemoryRegion *sysmem = get_system_memory(); 1127 1128 dev = qdev_create(NULL, TYPE_PLATFORM_BUS_DEVICE); 1129 dev->id = TYPE_PLATFORM_BUS_DEVICE; 1130 qdev_prop_set_uint32(dev, "num_irqs", PLATFORM_BUS_NUM_IRQS); 1131 qdev_prop_set_uint32(dev, "mmio_size", vms->memmap[VIRT_PLATFORM_BUS].size); 1132 qdev_init_nofail(dev); 1133 vms->platform_bus_dev = dev; 1134 1135 s = SYS_BUS_DEVICE(dev); 1136 for (i = 0; i < PLATFORM_BUS_NUM_IRQS; i++) { 1137 int irqn = vms->irqmap[VIRT_PLATFORM_BUS] + i; 1138 sysbus_connect_irq(s, i, pic[irqn]); 1139 } 1140 1141 memory_region_add_subregion(sysmem, 1142 vms->memmap[VIRT_PLATFORM_BUS].base, 1143 sysbus_mmio_get_region(s, 0)); 1144 } 1145 1146 static void create_secure_ram(VirtMachineState *vms, 1147 MemoryRegion *secure_sysmem) 1148 { 1149 MemoryRegion *secram = g_new(MemoryRegion, 1); 1150 char *nodename; 1151 hwaddr base = vms->memmap[VIRT_SECURE_MEM].base; 1152 hwaddr size = vms->memmap[VIRT_SECURE_MEM].size; 1153 1154 memory_region_init_ram(secram, NULL, "virt.secure-ram", size, 1155 &error_fatal); 1156 memory_region_add_subregion(secure_sysmem, base, secram); 1157 1158 nodename = g_strdup_printf("/secram@%" PRIx64, base); 1159 qemu_fdt_add_subnode(vms->fdt, nodename); 1160 qemu_fdt_setprop_string(vms->fdt, nodename, "device_type", "memory"); 1161 qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg", 2, base, 2, size); 1162 qemu_fdt_setprop_string(vms->fdt, nodename, "status", "disabled"); 1163 qemu_fdt_setprop_string(vms->fdt, nodename, "secure-status", "okay"); 1164 1165 g_free(nodename); 1166 } 1167 1168 static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size) 1169 { 1170 const VirtMachineState *board = container_of(binfo, VirtMachineState, 1171 bootinfo); 1172 1173 *fdt_size = board->fdt_size; 1174 return board->fdt; 1175 } 1176 1177 static void virt_build_smbios(VirtMachineState *vms) 1178 { 1179 MachineClass *mc = MACHINE_GET_CLASS(vms); 1180 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 1181 uint8_t *smbios_tables, *smbios_anchor; 1182 size_t smbios_tables_len, smbios_anchor_len; 1183 const char *product = "QEMU Virtual Machine"; 1184 1185 if (!vms->fw_cfg) { 1186 return; 1187 } 1188 1189 if (kvm_enabled()) { 1190 product = "KVM Virtual Machine"; 1191 } 1192 1193 smbios_set_defaults("QEMU", product, 1194 vmc->smbios_old_sys_ver ? "1.0" : mc->name, false, 1195 true, SMBIOS_ENTRY_POINT_30); 1196 1197 smbios_get_tables(NULL, 0, &smbios_tables, &smbios_tables_len, 1198 &smbios_anchor, &smbios_anchor_len); 1199 1200 if (smbios_anchor) { 1201 fw_cfg_add_file(vms->fw_cfg, "etc/smbios/smbios-tables", 1202 smbios_tables, smbios_tables_len); 1203 fw_cfg_add_file(vms->fw_cfg, "etc/smbios/smbios-anchor", 1204 smbios_anchor, smbios_anchor_len); 1205 } 1206 } 1207 1208 static 1209 void virt_machine_done(Notifier *notifier, void *data) 1210 { 1211 VirtMachineState *vms = container_of(notifier, VirtMachineState, 1212 machine_done); 1213 ARMCPU *cpu = ARM_CPU(first_cpu); 1214 struct arm_boot_info *info = &vms->bootinfo; 1215 AddressSpace *as = arm_boot_address_space(cpu, info); 1216 1217 /* 1218 * If the user provided a dtb, we assume the dynamic sysbus nodes 1219 * already are integrated there. This corresponds to a use case where 1220 * the dynamic sysbus nodes are complex and their generation is not yet 1221 * supported. In that case the user can take charge of the guest dt 1222 * while qemu takes charge of the qom stuff. 1223 */ 1224 if (info->dtb_filename == NULL) { 1225 platform_bus_add_all_fdt_nodes(vms->fdt, "/intc", 1226 vms->memmap[VIRT_PLATFORM_BUS].base, 1227 vms->memmap[VIRT_PLATFORM_BUS].size, 1228 vms->irqmap[VIRT_PLATFORM_BUS]); 1229 } 1230 if (arm_load_dtb(info->dtb_start, info, info->dtb_limit, as) < 0) { 1231 exit(1); 1232 } 1233 1234 virt_acpi_setup(vms); 1235 virt_build_smbios(vms); 1236 } 1237 1238 static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx) 1239 { 1240 uint8_t clustersz = ARM_DEFAULT_CPUS_PER_CLUSTER; 1241 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 1242 1243 if (!vmc->disallow_affinity_adjustment) { 1244 /* Adjust MPIDR like 64-bit KVM hosts, which incorporate the 1245 * GIC's target-list limitations. 32-bit KVM hosts currently 1246 * always create clusters of 4 CPUs, but that is expected to 1247 * change when they gain support for gicv3. When KVM is enabled 1248 * it will override the changes we make here, therefore our 1249 * purposes are to make TCG consistent (with 64-bit KVM hosts) 1250 * and to improve SGI efficiency. 1251 */ 1252 if (vms->gic_version == 3) { 1253 clustersz = GICV3_TARGETLIST_BITS; 1254 } else { 1255 clustersz = GIC_TARGETLIST_BITS; 1256 } 1257 } 1258 return arm_cpu_mp_affinity(idx, clustersz); 1259 } 1260 1261 static void machvirt_init(MachineState *machine) 1262 { 1263 VirtMachineState *vms = VIRT_MACHINE(machine); 1264 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(machine); 1265 MachineClass *mc = MACHINE_GET_CLASS(machine); 1266 const CPUArchIdList *possible_cpus; 1267 qemu_irq pic[NUM_IRQS]; 1268 MemoryRegion *sysmem = get_system_memory(); 1269 MemoryRegion *secure_sysmem = NULL; 1270 int n, virt_max_cpus; 1271 MemoryRegion *ram = g_new(MemoryRegion, 1); 1272 bool firmware_loaded = bios_name || drive_get(IF_PFLASH, 0, 0); 1273 1274 /* We can probe only here because during property set 1275 * KVM is not available yet 1276 */ 1277 if (vms->gic_version <= 0) { 1278 /* "host" or "max" */ 1279 if (!kvm_enabled()) { 1280 if (vms->gic_version == 0) { 1281 error_report("gic-version=host requires KVM"); 1282 exit(1); 1283 } else { 1284 /* "max": currently means 3 for TCG */ 1285 vms->gic_version = 3; 1286 } 1287 } else { 1288 vms->gic_version = kvm_arm_vgic_probe(); 1289 if (!vms->gic_version) { 1290 error_report( 1291 "Unable to determine GIC version supported by host"); 1292 exit(1); 1293 } 1294 } 1295 } 1296 1297 if (!cpu_type_valid(machine->cpu_type)) { 1298 error_report("mach-virt: CPU type %s not supported", machine->cpu_type); 1299 exit(1); 1300 } 1301 1302 /* If we have an EL3 boot ROM then the assumption is that it will 1303 * implement PSCI itself, so disable QEMU's internal implementation 1304 * so it doesn't get in the way. Instead of starting secondary 1305 * CPUs in PSCI powerdown state we will start them all running and 1306 * let the boot ROM sort them out. 1307 * The usual case is that we do use QEMU's PSCI implementation; 1308 * if the guest has EL2 then we will use SMC as the conduit, 1309 * and otherwise we will use HVC (for backwards compatibility and 1310 * because if we're using KVM then we must use HVC). 1311 */ 1312 if (vms->secure && firmware_loaded) { 1313 vms->psci_conduit = QEMU_PSCI_CONDUIT_DISABLED; 1314 } else if (vms->virt) { 1315 vms->psci_conduit = QEMU_PSCI_CONDUIT_SMC; 1316 } else { 1317 vms->psci_conduit = QEMU_PSCI_CONDUIT_HVC; 1318 } 1319 1320 /* The maximum number of CPUs depends on the GIC version, or on how 1321 * many redistributors we can fit into the memory map. 1322 */ 1323 if (vms->gic_version == 3) { 1324 virt_max_cpus = vms->memmap[VIRT_GIC_REDIST].size / 0x20000; 1325 } else { 1326 virt_max_cpus = GIC_NCPU; 1327 } 1328 1329 if (max_cpus > virt_max_cpus) { 1330 error_report("Number of SMP CPUs requested (%d) exceeds max CPUs " 1331 "supported by machine 'mach-virt' (%d)", 1332 max_cpus, virt_max_cpus); 1333 exit(1); 1334 } 1335 1336 vms->smp_cpus = smp_cpus; 1337 1338 if (machine->ram_size > vms->memmap[VIRT_MEM].size) { 1339 error_report("mach-virt: cannot model more than %dGB RAM", RAMLIMIT_GB); 1340 exit(1); 1341 } 1342 1343 if (vms->virt && kvm_enabled()) { 1344 error_report("mach-virt: KVM does not support providing " 1345 "Virtualization extensions to the guest CPU"); 1346 exit(1); 1347 } 1348 1349 if (vms->secure) { 1350 if (kvm_enabled()) { 1351 error_report("mach-virt: KVM does not support Security extensions"); 1352 exit(1); 1353 } 1354 1355 /* The Secure view of the world is the same as the NonSecure, 1356 * but with a few extra devices. Create it as a container region 1357 * containing the system memory at low priority; any secure-only 1358 * devices go in at higher priority and take precedence. 1359 */ 1360 secure_sysmem = g_new(MemoryRegion, 1); 1361 memory_region_init(secure_sysmem, OBJECT(machine), "secure-memory", 1362 UINT64_MAX); 1363 memory_region_add_subregion_overlap(secure_sysmem, 0, sysmem, -1); 1364 } 1365 1366 create_fdt(vms); 1367 1368 possible_cpus = mc->possible_cpu_arch_ids(machine); 1369 for (n = 0; n < possible_cpus->len; n++) { 1370 Object *cpuobj; 1371 CPUState *cs; 1372 1373 if (n >= smp_cpus) { 1374 break; 1375 } 1376 1377 cpuobj = object_new(possible_cpus->cpus[n].type); 1378 object_property_set_int(cpuobj, possible_cpus->cpus[n].arch_id, 1379 "mp-affinity", NULL); 1380 1381 cs = CPU(cpuobj); 1382 cs->cpu_index = n; 1383 1384 numa_cpu_pre_plug(&possible_cpus->cpus[cs->cpu_index], DEVICE(cpuobj), 1385 &error_fatal); 1386 1387 if (!vms->secure) { 1388 object_property_set_bool(cpuobj, false, "has_el3", NULL); 1389 } 1390 1391 if (!vms->virt && object_property_find(cpuobj, "has_el2", NULL)) { 1392 object_property_set_bool(cpuobj, false, "has_el2", NULL); 1393 } 1394 1395 if (vms->psci_conduit != QEMU_PSCI_CONDUIT_DISABLED) { 1396 object_property_set_int(cpuobj, vms->psci_conduit, 1397 "psci-conduit", NULL); 1398 1399 /* Secondary CPUs start in PSCI powered-down state */ 1400 if (n > 0) { 1401 object_property_set_bool(cpuobj, true, 1402 "start-powered-off", NULL); 1403 } 1404 } 1405 1406 if (vmc->no_pmu && object_property_find(cpuobj, "pmu", NULL)) { 1407 object_property_set_bool(cpuobj, false, "pmu", NULL); 1408 } 1409 1410 if (object_property_find(cpuobj, "reset-cbar", NULL)) { 1411 object_property_set_int(cpuobj, vms->memmap[VIRT_CPUPERIPHS].base, 1412 "reset-cbar", &error_abort); 1413 } 1414 1415 object_property_set_link(cpuobj, OBJECT(sysmem), "memory", 1416 &error_abort); 1417 if (vms->secure) { 1418 object_property_set_link(cpuobj, OBJECT(secure_sysmem), 1419 "secure-memory", &error_abort); 1420 } 1421 1422 object_property_set_bool(cpuobj, true, "realized", &error_fatal); 1423 object_unref(cpuobj); 1424 } 1425 fdt_add_timer_nodes(vms); 1426 fdt_add_cpu_nodes(vms); 1427 1428 memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram", 1429 machine->ram_size); 1430 memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram); 1431 1432 create_flash(vms, sysmem, secure_sysmem ? secure_sysmem : sysmem); 1433 1434 create_gic(vms, pic); 1435 1436 fdt_add_pmu_nodes(vms); 1437 1438 create_uart(vms, pic, VIRT_UART, sysmem, serial_hd(0)); 1439 1440 if (vms->secure) { 1441 create_secure_ram(vms, secure_sysmem); 1442 create_uart(vms, pic, VIRT_SECURE_UART, secure_sysmem, serial_hd(1)); 1443 } 1444 1445 create_rtc(vms, pic); 1446 1447 create_pcie(vms, pic); 1448 1449 create_gpio(vms, pic); 1450 1451 /* Create mmio transports, so the user can create virtio backends 1452 * (which will be automatically plugged in to the transports). If 1453 * no backend is created the transport will just sit harmlessly idle. 1454 */ 1455 create_virtio_devices(vms, pic); 1456 1457 vms->fw_cfg = create_fw_cfg(vms, &address_space_memory); 1458 rom_set_fw(vms->fw_cfg); 1459 1460 create_platform_bus(vms, pic); 1461 1462 vms->bootinfo.ram_size = machine->ram_size; 1463 vms->bootinfo.kernel_filename = machine->kernel_filename; 1464 vms->bootinfo.kernel_cmdline = machine->kernel_cmdline; 1465 vms->bootinfo.initrd_filename = machine->initrd_filename; 1466 vms->bootinfo.nb_cpus = smp_cpus; 1467 vms->bootinfo.board_id = -1; 1468 vms->bootinfo.loader_start = vms->memmap[VIRT_MEM].base; 1469 vms->bootinfo.get_dtb = machvirt_dtb; 1470 vms->bootinfo.skip_dtb_autoload = true; 1471 vms->bootinfo.firmware_loaded = firmware_loaded; 1472 arm_load_kernel(ARM_CPU(first_cpu), &vms->bootinfo); 1473 1474 vms->machine_done.notify = virt_machine_done; 1475 qemu_add_machine_init_done_notifier(&vms->machine_done); 1476 } 1477 1478 static bool virt_get_secure(Object *obj, Error **errp) 1479 { 1480 VirtMachineState *vms = VIRT_MACHINE(obj); 1481 1482 return vms->secure; 1483 } 1484 1485 static void virt_set_secure(Object *obj, bool value, Error **errp) 1486 { 1487 VirtMachineState *vms = VIRT_MACHINE(obj); 1488 1489 vms->secure = value; 1490 } 1491 1492 static bool virt_get_virt(Object *obj, Error **errp) 1493 { 1494 VirtMachineState *vms = VIRT_MACHINE(obj); 1495 1496 return vms->virt; 1497 } 1498 1499 static void virt_set_virt(Object *obj, bool value, Error **errp) 1500 { 1501 VirtMachineState *vms = VIRT_MACHINE(obj); 1502 1503 vms->virt = value; 1504 } 1505 1506 static bool virt_get_highmem(Object *obj, Error **errp) 1507 { 1508 VirtMachineState *vms = VIRT_MACHINE(obj); 1509 1510 return vms->highmem; 1511 } 1512 1513 static void virt_set_highmem(Object *obj, bool value, Error **errp) 1514 { 1515 VirtMachineState *vms = VIRT_MACHINE(obj); 1516 1517 vms->highmem = value; 1518 } 1519 1520 static bool virt_get_its(Object *obj, Error **errp) 1521 { 1522 VirtMachineState *vms = VIRT_MACHINE(obj); 1523 1524 return vms->its; 1525 } 1526 1527 static void virt_set_its(Object *obj, bool value, Error **errp) 1528 { 1529 VirtMachineState *vms = VIRT_MACHINE(obj); 1530 1531 vms->its = value; 1532 } 1533 1534 static char *virt_get_gic_version(Object *obj, Error **errp) 1535 { 1536 VirtMachineState *vms = VIRT_MACHINE(obj); 1537 const char *val = vms->gic_version == 3 ? "3" : "2"; 1538 1539 return g_strdup(val); 1540 } 1541 1542 static void virt_set_gic_version(Object *obj, const char *value, Error **errp) 1543 { 1544 VirtMachineState *vms = VIRT_MACHINE(obj); 1545 1546 if (!strcmp(value, "3")) { 1547 vms->gic_version = 3; 1548 } else if (!strcmp(value, "2")) { 1549 vms->gic_version = 2; 1550 } else if (!strcmp(value, "host")) { 1551 vms->gic_version = 0; /* Will probe later */ 1552 } else if (!strcmp(value, "max")) { 1553 vms->gic_version = -1; /* Will probe later */ 1554 } else { 1555 error_setg(errp, "Invalid gic-version value"); 1556 error_append_hint(errp, "Valid values are 3, 2, host, max.\n"); 1557 } 1558 } 1559 1560 static char *virt_get_iommu(Object *obj, Error **errp) 1561 { 1562 VirtMachineState *vms = VIRT_MACHINE(obj); 1563 1564 switch (vms->iommu) { 1565 case VIRT_IOMMU_NONE: 1566 return g_strdup("none"); 1567 case VIRT_IOMMU_SMMUV3: 1568 return g_strdup("smmuv3"); 1569 default: 1570 g_assert_not_reached(); 1571 } 1572 } 1573 1574 static void virt_set_iommu(Object *obj, const char *value, Error **errp) 1575 { 1576 VirtMachineState *vms = VIRT_MACHINE(obj); 1577 1578 if (!strcmp(value, "smmuv3")) { 1579 vms->iommu = VIRT_IOMMU_SMMUV3; 1580 } else if (!strcmp(value, "none")) { 1581 vms->iommu = VIRT_IOMMU_NONE; 1582 } else { 1583 error_setg(errp, "Invalid iommu value"); 1584 error_append_hint(errp, "Valid values are none, smmuv3.\n"); 1585 } 1586 } 1587 1588 static CpuInstanceProperties 1589 virt_cpu_index_to_props(MachineState *ms, unsigned cpu_index) 1590 { 1591 MachineClass *mc = MACHINE_GET_CLASS(ms); 1592 const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms); 1593 1594 assert(cpu_index < possible_cpus->len); 1595 return possible_cpus->cpus[cpu_index].props; 1596 } 1597 1598 static int64_t virt_get_default_cpu_node_id(const MachineState *ms, int idx) 1599 { 1600 return idx % nb_numa_nodes; 1601 } 1602 1603 static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms) 1604 { 1605 int n; 1606 VirtMachineState *vms = VIRT_MACHINE(ms); 1607 1608 if (ms->possible_cpus) { 1609 assert(ms->possible_cpus->len == max_cpus); 1610 return ms->possible_cpus; 1611 } 1612 1613 ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + 1614 sizeof(CPUArchId) * max_cpus); 1615 ms->possible_cpus->len = max_cpus; 1616 for (n = 0; n < ms->possible_cpus->len; n++) { 1617 ms->possible_cpus->cpus[n].type = ms->cpu_type; 1618 ms->possible_cpus->cpus[n].arch_id = 1619 virt_cpu_mp_affinity(vms, n); 1620 ms->possible_cpus->cpus[n].props.has_thread_id = true; 1621 ms->possible_cpus->cpus[n].props.thread_id = n; 1622 } 1623 return ms->possible_cpus; 1624 } 1625 1626 static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev, 1627 DeviceState *dev, Error **errp) 1628 { 1629 VirtMachineState *vms = VIRT_MACHINE(hotplug_dev); 1630 1631 if (vms->platform_bus_dev) { 1632 if (object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE)) { 1633 platform_bus_link_device(PLATFORM_BUS_DEVICE(vms->platform_bus_dev), 1634 SYS_BUS_DEVICE(dev)); 1635 } 1636 } 1637 } 1638 1639 static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, 1640 DeviceState *dev) 1641 { 1642 if (object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE)) { 1643 return HOTPLUG_HANDLER(machine); 1644 } 1645 1646 return NULL; 1647 } 1648 1649 static void virt_machine_class_init(ObjectClass *oc, void *data) 1650 { 1651 MachineClass *mc = MACHINE_CLASS(oc); 1652 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 1653 1654 mc->init = machvirt_init; 1655 /* Start max_cpus at the maximum QEMU supports. We'll further restrict 1656 * it later in machvirt_init, where we have more information about the 1657 * configuration of the particular instance. 1658 */ 1659 mc->max_cpus = 255; 1660 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_CALXEDA_XGMAC); 1661 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_VFIO_AMD_XGBE); 1662 mc->block_default_type = IF_VIRTIO; 1663 mc->no_cdrom = 1; 1664 mc->pci_allow_0_address = true; 1665 /* We know we will never create a pre-ARMv7 CPU which needs 1K pages */ 1666 mc->minimum_page_bits = 12; 1667 mc->possible_cpu_arch_ids = virt_possible_cpu_arch_ids; 1668 mc->cpu_index_to_instance_props = virt_cpu_index_to_props; 1669 mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a15"); 1670 mc->get_default_cpu_node_id = virt_get_default_cpu_node_id; 1671 assert(!mc->get_hotplug_handler); 1672 mc->get_hotplug_handler = virt_machine_get_hotplug_handler; 1673 hc->plug = virt_machine_device_plug_cb; 1674 } 1675 1676 static const TypeInfo virt_machine_info = { 1677 .name = TYPE_VIRT_MACHINE, 1678 .parent = TYPE_MACHINE, 1679 .abstract = true, 1680 .instance_size = sizeof(VirtMachineState), 1681 .class_size = sizeof(VirtMachineClass), 1682 .class_init = virt_machine_class_init, 1683 .interfaces = (InterfaceInfo[]) { 1684 { TYPE_HOTPLUG_HANDLER }, 1685 { } 1686 }, 1687 }; 1688 1689 static void machvirt_machine_init(void) 1690 { 1691 type_register_static(&virt_machine_info); 1692 } 1693 type_init(machvirt_machine_init); 1694 1695 #define VIRT_COMPAT_2_12 \ 1696 HW_COMPAT_2_12 1697 1698 static void virt_2_12_instance_init(Object *obj) 1699 { 1700 VirtMachineState *vms = VIRT_MACHINE(obj); 1701 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 1702 1703 /* EL3 is disabled by default on virt: this makes us consistent 1704 * between KVM and TCG for this board, and it also allows us to 1705 * boot UEFI blobs which assume no TrustZone support. 1706 */ 1707 vms->secure = false; 1708 object_property_add_bool(obj, "secure", virt_get_secure, 1709 virt_set_secure, NULL); 1710 object_property_set_description(obj, "secure", 1711 "Set on/off to enable/disable the ARM " 1712 "Security Extensions (TrustZone)", 1713 NULL); 1714 1715 /* EL2 is also disabled by default, for similar reasons */ 1716 vms->virt = false; 1717 object_property_add_bool(obj, "virtualization", virt_get_virt, 1718 virt_set_virt, NULL); 1719 object_property_set_description(obj, "virtualization", 1720 "Set on/off to enable/disable emulating a " 1721 "guest CPU which implements the ARM " 1722 "Virtualization Extensions", 1723 NULL); 1724 1725 /* High memory is enabled by default */ 1726 vms->highmem = true; 1727 object_property_add_bool(obj, "highmem", virt_get_highmem, 1728 virt_set_highmem, NULL); 1729 object_property_set_description(obj, "highmem", 1730 "Set on/off to enable/disable using " 1731 "physical address space above 32 bits", 1732 NULL); 1733 /* Default GIC type is v2 */ 1734 vms->gic_version = 2; 1735 object_property_add_str(obj, "gic-version", virt_get_gic_version, 1736 virt_set_gic_version, NULL); 1737 object_property_set_description(obj, "gic-version", 1738 "Set GIC version. " 1739 "Valid values are 2, 3 and host", NULL); 1740 1741 if (vmc->no_its) { 1742 vms->its = false; 1743 } else { 1744 /* Default allows ITS instantiation */ 1745 vms->its = true; 1746 object_property_add_bool(obj, "its", virt_get_its, 1747 virt_set_its, NULL); 1748 object_property_set_description(obj, "its", 1749 "Set on/off to enable/disable " 1750 "ITS instantiation", 1751 NULL); 1752 } 1753 1754 /* Default disallows iommu instantiation */ 1755 vms->iommu = VIRT_IOMMU_NONE; 1756 object_property_add_str(obj, "iommu", virt_get_iommu, virt_set_iommu, NULL); 1757 object_property_set_description(obj, "iommu", 1758 "Set the IOMMU type. " 1759 "Valid values are none and smmuv3", 1760 NULL); 1761 1762 vms->memmap = a15memmap; 1763 vms->irqmap = a15irqmap; 1764 } 1765 1766 static void virt_machine_2_12_options(MachineClass *mc) 1767 { 1768 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_12); 1769 } 1770 DEFINE_VIRT_MACHINE_AS_LATEST(2, 12) 1771 1772 #define VIRT_COMPAT_2_11 \ 1773 HW_COMPAT_2_11 1774 1775 static void virt_2_11_instance_init(Object *obj) 1776 { 1777 virt_2_12_instance_init(obj); 1778 } 1779 1780 static void virt_machine_2_11_options(MachineClass *mc) 1781 { 1782 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); 1783 1784 virt_machine_2_12_options(mc); 1785 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_11); 1786 vmc->smbios_old_sys_ver = true; 1787 } 1788 DEFINE_VIRT_MACHINE(2, 11) 1789 1790 #define VIRT_COMPAT_2_10 \ 1791 HW_COMPAT_2_10 1792 1793 static void virt_2_10_instance_init(Object *obj) 1794 { 1795 virt_2_11_instance_init(obj); 1796 } 1797 1798 static void virt_machine_2_10_options(MachineClass *mc) 1799 { 1800 virt_machine_2_11_options(mc); 1801 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_10); 1802 } 1803 DEFINE_VIRT_MACHINE(2, 10) 1804 1805 #define VIRT_COMPAT_2_9 \ 1806 HW_COMPAT_2_9 1807 1808 static void virt_2_9_instance_init(Object *obj) 1809 { 1810 virt_2_10_instance_init(obj); 1811 } 1812 1813 static void virt_machine_2_9_options(MachineClass *mc) 1814 { 1815 virt_machine_2_10_options(mc); 1816 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_9); 1817 } 1818 DEFINE_VIRT_MACHINE(2, 9) 1819 1820 #define VIRT_COMPAT_2_8 \ 1821 HW_COMPAT_2_8 1822 1823 static void virt_2_8_instance_init(Object *obj) 1824 { 1825 virt_2_9_instance_init(obj); 1826 } 1827 1828 static void virt_machine_2_8_options(MachineClass *mc) 1829 { 1830 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); 1831 1832 virt_machine_2_9_options(mc); 1833 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_8); 1834 /* For 2.8 and earlier we falsely claimed in the DT that 1835 * our timers were edge-triggered, not level-triggered. 1836 */ 1837 vmc->claim_edge_triggered_timers = true; 1838 } 1839 DEFINE_VIRT_MACHINE(2, 8) 1840 1841 #define VIRT_COMPAT_2_7 \ 1842 HW_COMPAT_2_7 1843 1844 static void virt_2_7_instance_init(Object *obj) 1845 { 1846 virt_2_8_instance_init(obj); 1847 } 1848 1849 static void virt_machine_2_7_options(MachineClass *mc) 1850 { 1851 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); 1852 1853 virt_machine_2_8_options(mc); 1854 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_7); 1855 /* ITS was introduced with 2.8 */ 1856 vmc->no_its = true; 1857 /* Stick with 1K pages for migration compatibility */ 1858 mc->minimum_page_bits = 0; 1859 } 1860 DEFINE_VIRT_MACHINE(2, 7) 1861 1862 #define VIRT_COMPAT_2_6 \ 1863 HW_COMPAT_2_6 1864 1865 static void virt_2_6_instance_init(Object *obj) 1866 { 1867 virt_2_7_instance_init(obj); 1868 } 1869 1870 static void virt_machine_2_6_options(MachineClass *mc) 1871 { 1872 VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); 1873 1874 virt_machine_2_7_options(mc); 1875 SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_6); 1876 vmc->disallow_affinity_adjustment = true; 1877 /* Disable PMU for 2.6 as PMU support was first introduced in 2.7 */ 1878 vmc->no_pmu = true; 1879 } 1880 DEFINE_VIRT_MACHINE(2, 6) 1881