1 /* Support for generating ACPI tables and passing them to Guests 2 * 3 * ARM virt ACPI generation 4 * 5 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> 6 * Copyright (C) 2006 Fabrice Bellard 7 * Copyright (C) 2013 Red Hat Inc 8 * 9 * Author: Michael S. Tsirkin <mst@redhat.com> 10 * 11 * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD. 12 * 13 * Author: Shannon Zhao <zhaoshenglong@huawei.com> 14 * 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 25 * You should have received a copy of the GNU General Public License along 26 * with this program; if not, see <http://www.gnu.org/licenses/>. 27 */ 28 29 #include "qemu/osdep.h" 30 #include "qapi/error.h" 31 #include "qemu/bitmap.h" 32 #include "trace.h" 33 #include "hw/core/cpu.h" 34 #include "target/arm/cpu.h" 35 #include "hw/acpi/acpi-defs.h" 36 #include "hw/acpi/acpi.h" 37 #include "hw/nvram/fw_cfg.h" 38 #include "hw/acpi/bios-linker-loader.h" 39 #include "hw/acpi/aml-build.h" 40 #include "hw/acpi/utils.h" 41 #include "hw/acpi/pci.h" 42 #include "hw/acpi/memory_hotplug.h" 43 #include "hw/acpi/generic_event_device.h" 44 #include "hw/acpi/tpm.h" 45 #include "hw/pci/pcie_host.h" 46 #include "hw/pci/pci.h" 47 #include "hw/pci/pci_bus.h" 48 #include "hw/pci-host/gpex.h" 49 #include "hw/arm/virt.h" 50 #include "hw/mem/nvdimm.h" 51 #include "hw/platform-bus.h" 52 #include "sysemu/numa.h" 53 #include "sysemu/reset.h" 54 #include "sysemu/tpm.h" 55 #include "kvm_arm.h" 56 #include "migration/vmstate.h" 57 #include "hw/acpi/ghes.h" 58 #include "hw/acpi/viot.h" 59 60 #define ARM_SPI_BASE 32 61 62 #define ACPI_BUILD_TABLE_SIZE 0x20000 63 64 static void acpi_dsdt_add_cpus(Aml *scope, VirtMachineState *vms) 65 { 66 MachineState *ms = MACHINE(vms); 67 uint16_t i; 68 69 for (i = 0; i < ms->smp.cpus; i++) { 70 Aml *dev = aml_device("C%.03X", i); 71 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007"))); 72 aml_append(dev, aml_name_decl("_UID", aml_int(i))); 73 aml_append(scope, dev); 74 } 75 } 76 77 static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap, 78 uint32_t uart_irq) 79 { 80 Aml *dev = aml_device("COM0"); 81 aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011"))); 82 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 83 84 Aml *crs = aml_resource_template(); 85 aml_append(crs, aml_memory32_fixed(uart_memmap->base, 86 uart_memmap->size, AML_READ_WRITE)); 87 aml_append(crs, 88 aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 89 AML_EXCLUSIVE, &uart_irq, 1)); 90 aml_append(dev, aml_name_decl("_CRS", crs)); 91 92 aml_append(scope, dev); 93 } 94 95 static void acpi_dsdt_add_fw_cfg(Aml *scope, const MemMapEntry *fw_cfg_memmap) 96 { 97 Aml *dev = aml_device("FWCF"); 98 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); 99 /* device present, functioning, decoding, not shown in UI */ 100 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 101 aml_append(dev, aml_name_decl("_CCA", aml_int(1))); 102 103 Aml *crs = aml_resource_template(); 104 aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base, 105 fw_cfg_memmap->size, AML_READ_WRITE)); 106 aml_append(dev, aml_name_decl("_CRS", crs)); 107 aml_append(scope, dev); 108 } 109 110 static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap) 111 { 112 Aml *dev, *crs; 113 hwaddr base = flash_memmap->base; 114 hwaddr size = flash_memmap->size / 2; 115 116 dev = aml_device("FLS0"); 117 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); 118 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 119 120 crs = aml_resource_template(); 121 aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE)); 122 aml_append(dev, aml_name_decl("_CRS", crs)); 123 aml_append(scope, dev); 124 125 dev = aml_device("FLS1"); 126 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); 127 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 128 crs = aml_resource_template(); 129 aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE)); 130 aml_append(dev, aml_name_decl("_CRS", crs)); 131 aml_append(scope, dev); 132 } 133 134 static void acpi_dsdt_add_virtio(Aml *scope, 135 const MemMapEntry *virtio_mmio_memmap, 136 uint32_t mmio_irq, int num) 137 { 138 hwaddr base = virtio_mmio_memmap->base; 139 hwaddr size = virtio_mmio_memmap->size; 140 int i; 141 142 for (i = 0; i < num; i++) { 143 uint32_t irq = mmio_irq + i; 144 Aml *dev = aml_device("VR%02u", i); 145 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005"))); 146 aml_append(dev, aml_name_decl("_UID", aml_int(i))); 147 aml_append(dev, aml_name_decl("_CCA", aml_int(1))); 148 149 Aml *crs = aml_resource_template(); 150 aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE)); 151 aml_append(crs, 152 aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 153 AML_EXCLUSIVE, &irq, 1)); 154 aml_append(dev, aml_name_decl("_CRS", crs)); 155 aml_append(scope, dev); 156 base += size; 157 } 158 } 159 160 static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, 161 uint32_t irq, VirtMachineState *vms) 162 { 163 int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam); 164 struct GPEXConfig cfg = { 165 .mmio32 = memmap[VIRT_PCIE_MMIO], 166 .pio = memmap[VIRT_PCIE_PIO], 167 .ecam = memmap[ecam_id], 168 .irq = irq, 169 .bus = vms->bus, 170 }; 171 172 if (vms->highmem_mmio) { 173 cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO]; 174 } 175 176 acpi_dsdt_add_gpex(scope, &cfg); 177 } 178 179 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap, 180 uint32_t gpio_irq) 181 { 182 Aml *dev = aml_device("GPO0"); 183 aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061"))); 184 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 185 186 Aml *crs = aml_resource_template(); 187 aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size, 188 AML_READ_WRITE)); 189 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 190 AML_EXCLUSIVE, &gpio_irq, 1)); 191 aml_append(dev, aml_name_decl("_CRS", crs)); 192 193 Aml *aei = aml_resource_template(); 194 /* Pin 3 for power button */ 195 const uint32_t pin_list[1] = {3}; 196 aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, 197 AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1, 198 "GPO0", NULL, 0)); 199 aml_append(dev, aml_name_decl("_AEI", aei)); 200 201 /* _E03 is handle for power button */ 202 Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED); 203 aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), 204 aml_int(0x80))); 205 aml_append(dev, method); 206 aml_append(scope, dev); 207 } 208 209 #ifdef CONFIG_TPM 210 static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms) 211 { 212 PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); 213 hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base; 214 SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find()); 215 MemoryRegion *sbdev_mr; 216 hwaddr tpm_base; 217 218 if (!sbdev) { 219 return; 220 } 221 222 tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0); 223 assert(tpm_base != -1); 224 225 tpm_base += pbus_base; 226 227 sbdev_mr = sysbus_mmio_get_region(sbdev, 0); 228 229 Aml *dev = aml_device("TPM0"); 230 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 231 aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); 232 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 233 234 Aml *crs = aml_resource_template(); 235 aml_append(crs, 236 aml_memory32_fixed(tpm_base, 237 (uint32_t)memory_region_size(sbdev_mr), 238 AML_READ_WRITE)); 239 aml_append(dev, aml_name_decl("_CRS", crs)); 240 aml_append(scope, dev); 241 } 242 #endif 243 244 #define ID_MAPPING_ENTRY_SIZE 20 245 #define SMMU_V3_ENTRY_SIZE 68 246 #define ROOT_COMPLEX_ENTRY_SIZE 36 247 #define IORT_NODE_OFFSET 48 248 249 static void build_iort_id_mapping(GArray *table_data, uint32_t input_base, 250 uint32_t id_count, uint32_t out_ref) 251 { 252 /* Table 4 ID mapping format */ 253 build_append_int_noprefix(table_data, input_base, 4); /* Input base */ 254 build_append_int_noprefix(table_data, id_count, 4); /* Number of IDs */ 255 build_append_int_noprefix(table_data, input_base, 4); /* Output base */ 256 build_append_int_noprefix(table_data, out_ref, 4); /* Output Reference */ 257 /* Flags */ 258 build_append_int_noprefix(table_data, 0 /* Single mapping (disabled) */, 4); 259 } 260 261 struct AcpiIortIdMapping { 262 uint32_t input_base; 263 uint32_t id_count; 264 }; 265 typedef struct AcpiIortIdMapping AcpiIortIdMapping; 266 267 /* Build the iort ID mapping to SMMUv3 for a given PCI host bridge */ 268 static int 269 iort_host_bridges(Object *obj, void *opaque) 270 { 271 GArray *idmap_blob = opaque; 272 273 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 274 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 275 276 if (bus && !pci_bus_bypass_iommu(bus)) { 277 int min_bus, max_bus; 278 279 pci_bus_range(bus, &min_bus, &max_bus); 280 281 AcpiIortIdMapping idmap = { 282 .input_base = min_bus << 8, 283 .id_count = (max_bus - min_bus + 1) << 8, 284 }; 285 g_array_append_val(idmap_blob, idmap); 286 } 287 } 288 289 return 0; 290 } 291 292 static int iort_idmap_compare(gconstpointer a, gconstpointer b) 293 { 294 AcpiIortIdMapping *idmap_a = (AcpiIortIdMapping *)a; 295 AcpiIortIdMapping *idmap_b = (AcpiIortIdMapping *)b; 296 297 return idmap_a->input_base - idmap_b->input_base; 298 } 299 300 /* 301 * Input Output Remapping Table (IORT) 302 * Conforms to "IO Remapping Table System Software on ARM Platforms", 303 * Document number: ARM DEN 0049E.b, Feb 2021 304 */ 305 static void 306 build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 307 { 308 int i, nb_nodes, rc_mapping_count; 309 const uint32_t iort_node_offset = IORT_NODE_OFFSET; 310 size_t node_size, smmu_offset = 0; 311 AcpiIortIdMapping *idmap; 312 uint32_t id = 0; 313 GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); 314 GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); 315 316 AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id, 317 .oem_table_id = vms->oem_table_id }; 318 /* Table 2 The IORT */ 319 acpi_table_begin(&table, table_data); 320 321 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 322 AcpiIortIdMapping next_range = {0}; 323 324 object_child_foreach_recursive(object_get_root(), 325 iort_host_bridges, smmu_idmaps); 326 327 /* Sort the smmu idmap by input_base */ 328 g_array_sort(smmu_idmaps, iort_idmap_compare); 329 330 /* 331 * Split the whole RIDs by mapping from RC to SMMU, 332 * build the ID mapping from RC to ITS directly. 333 */ 334 for (i = 0; i < smmu_idmaps->len; i++) { 335 idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); 336 337 if (next_range.input_base < idmap->input_base) { 338 next_range.id_count = idmap->input_base - next_range.input_base; 339 g_array_append_val(its_idmaps, next_range); 340 } 341 342 next_range.input_base = idmap->input_base + idmap->id_count; 343 } 344 345 /* Append the last RC -> ITS ID mapping */ 346 if (next_range.input_base < 0xFFFF) { 347 next_range.id_count = 0xFFFF - next_range.input_base; 348 g_array_append_val(its_idmaps, next_range); 349 } 350 351 nb_nodes = 3; /* RC, ITS, SMMUv3 */ 352 rc_mapping_count = smmu_idmaps->len + its_idmaps->len; 353 } else { 354 nb_nodes = 2; /* RC, ITS */ 355 rc_mapping_count = 1; 356 } 357 /* Number of IORT Nodes */ 358 build_append_int_noprefix(table_data, nb_nodes, 4); 359 360 /* Offset to Array of IORT Nodes */ 361 build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4); 362 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 363 364 /* Table 12 ITS Group Format */ 365 build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */ 366 node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */; 367 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 368 build_append_int_noprefix(table_data, 1, 1); /* Revision */ 369 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 370 build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */ 371 build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */ 372 build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */ 373 /* GIC ITS Identifier Array */ 374 build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4); 375 376 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 377 int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE; 378 379 smmu_offset = table_data->len - table.table_offset; 380 /* Table 9 SMMUv3 Format */ 381 build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */ 382 node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE; 383 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 384 build_append_int_noprefix(table_data, 4, 1); /* Revision */ 385 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 386 build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */ 387 /* Reference to ID Array */ 388 build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4); 389 /* Base address */ 390 build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8); 391 /* Flags */ 392 build_append_int_noprefix(table_data, 1 /* COHACC Override */, 4); 393 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 394 build_append_int_noprefix(table_data, 0, 8); /* VATOS address */ 395 /* Model */ 396 build_append_int_noprefix(table_data, 0 /* Generic SMMU-v3 */, 4); 397 build_append_int_noprefix(table_data, irq, 4); /* Event */ 398 build_append_int_noprefix(table_data, irq + 1, 4); /* PRI */ 399 build_append_int_noprefix(table_data, irq + 3, 4); /* GERR */ 400 build_append_int_noprefix(table_data, irq + 2, 4); /* Sync */ 401 build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */ 402 /* DeviceID mapping index (ignored since interrupts are GSIV based) */ 403 build_append_int_noprefix(table_data, 0, 4); 404 405 /* output IORT node is the ITS group node (the first node) */ 406 build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); 407 } 408 409 /* Table 17 Root Complex Node */ 410 build_append_int_noprefix(table_data, 2 /* Root complex */, 1); /* Type */ 411 node_size = ROOT_COMPLEX_ENTRY_SIZE + 412 ID_MAPPING_ENTRY_SIZE * rc_mapping_count; 413 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 414 build_append_int_noprefix(table_data, 3, 1); /* Revision */ 415 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 416 /* Number of ID mappings */ 417 build_append_int_noprefix(table_data, rc_mapping_count, 4); 418 /* Reference to ID Array */ 419 build_append_int_noprefix(table_data, ROOT_COMPLEX_ENTRY_SIZE, 4); 420 421 /* Table 14 Memory access properties */ 422 /* CCA: Cache Coherent Attribute */ 423 build_append_int_noprefix(table_data, 1 /* fully coherent */, 4); 424 build_append_int_noprefix(table_data, 0, 1); /* AH: Note Allocation Hints */ 425 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 426 /* Table 15 Memory Access Flags */ 427 build_append_int_noprefix(table_data, 0x3 /* CCA = CPM = DACS = 1 */, 1); 428 429 build_append_int_noprefix(table_data, 0, 4); /* ATS Attribute */ 430 /* MCFG pci_segment */ 431 build_append_int_noprefix(table_data, 0, 4); /* PCI Segment number */ 432 433 /* Memory address size limit */ 434 build_append_int_noprefix(table_data, 64, 1); 435 436 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 437 438 /* Output Reference */ 439 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 440 AcpiIortIdMapping *range; 441 442 /* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */ 443 for (i = 0; i < smmu_idmaps->len; i++) { 444 range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); 445 /* output IORT node is the smmuv3 node */ 446 build_iort_id_mapping(table_data, range->input_base, 447 range->id_count, smmu_offset); 448 } 449 450 /* bypassed RIDs connect to ITS group node directly: RC -> ITS */ 451 for (i = 0; i < its_idmaps->len; i++) { 452 range = &g_array_index(its_idmaps, AcpiIortIdMapping, i); 453 /* output IORT node is the ITS group node (the first node) */ 454 build_iort_id_mapping(table_data, range->input_base, 455 range->id_count, iort_node_offset); 456 } 457 } else { 458 /* output IORT node is the ITS group node (the first node) */ 459 build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); 460 } 461 462 acpi_table_end(linker, &table); 463 g_array_free(smmu_idmaps, true); 464 g_array_free(its_idmaps, true); 465 } 466 467 /* 468 * Serial Port Console Redirection Table (SPCR) 469 * Rev: 1.07 470 */ 471 static void 472 build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 473 { 474 AcpiTable table = { .sig = "SPCR", .rev = 2, .oem_id = vms->oem_id, 475 .oem_table_id = vms->oem_table_id }; 476 477 acpi_table_begin(&table, table_data); 478 479 /* Interface Type */ 480 build_append_int_noprefix(table_data, 3, 1); /* ARM PL011 UART */ 481 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 482 /* Base Address */ 483 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, 484 vms->memmap[VIRT_UART].base); 485 /* Interrupt Type */ 486 build_append_int_noprefix(table_data, 487 (1 << 3) /* Bit[3] ARMH GIC interrupt */, 1); 488 build_append_int_noprefix(table_data, 0, 1); /* IRQ */ 489 /* Global System Interrupt */ 490 build_append_int_noprefix(table_data, 491 vms->irqmap[VIRT_UART] + ARM_SPI_BASE, 4); 492 build_append_int_noprefix(table_data, 3 /* 9600 */, 1); /* Baud Rate */ 493 build_append_int_noprefix(table_data, 0 /* No Parity */, 1); /* Parity */ 494 /* Stop Bits */ 495 build_append_int_noprefix(table_data, 1 /* 1 Stop bit */, 1); 496 /* Flow Control */ 497 build_append_int_noprefix(table_data, 498 (1 << 1) /* RTS/CTS hardware flow control */, 1); 499 /* Terminal Type */ 500 build_append_int_noprefix(table_data, 0 /* VT100 */, 1); 501 build_append_int_noprefix(table_data, 0, 1); /* Language */ 502 /* PCI Device ID */ 503 build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); 504 /* PCI Vendor ID */ 505 build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); 506 build_append_int_noprefix(table_data, 0, 1); /* PCI Bus Number */ 507 build_append_int_noprefix(table_data, 0, 1); /* PCI Device Number */ 508 build_append_int_noprefix(table_data, 0, 1); /* PCI Function Number */ 509 build_append_int_noprefix(table_data, 0, 4); /* PCI Flags */ 510 build_append_int_noprefix(table_data, 0, 1); /* PCI Segment */ 511 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 512 513 acpi_table_end(linker, &table); 514 } 515 516 /* 517 * ACPI spec, Revision 5.1 518 * 5.2.16 System Resource Affinity Table (SRAT) 519 */ 520 static void 521 build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 522 { 523 int i; 524 uint64_t mem_base; 525 MachineClass *mc = MACHINE_GET_CLASS(vms); 526 MachineState *ms = MACHINE(vms); 527 const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms); 528 AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id, 529 .oem_table_id = vms->oem_table_id }; 530 531 acpi_table_begin(&table, table_data); 532 build_append_int_noprefix(table_data, 1, 4); /* Reserved */ 533 build_append_int_noprefix(table_data, 0, 8); /* Reserved */ 534 535 for (i = 0; i < cpu_list->len; ++i) { 536 uint32_t nodeid = cpu_list->cpus[i].props.node_id; 537 /* 538 * 5.2.16.4 GICC Affinity Structure 539 */ 540 build_append_int_noprefix(table_data, 3, 1); /* Type */ 541 build_append_int_noprefix(table_data, 18, 1); /* Length */ 542 build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */ 543 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ 544 /* Flags, Table 5-76 */ 545 build_append_int_noprefix(table_data, 1 /* Enabled */, 4); 546 build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ 547 } 548 549 mem_base = vms->memmap[VIRT_MEM].base; 550 for (i = 0; i < ms->numa_state->num_nodes; ++i) { 551 if (ms->numa_state->nodes[i].node_mem > 0) { 552 build_srat_memory(table_data, mem_base, 553 ms->numa_state->nodes[i].node_mem, i, 554 MEM_AFFINITY_ENABLED); 555 mem_base += ms->numa_state->nodes[i].node_mem; 556 } 557 } 558 559 if (ms->nvdimms_state->is_enabled) { 560 nvdimm_build_srat(table_data); 561 } 562 563 if (ms->device_memory) { 564 build_srat_memory(table_data, ms->device_memory->base, 565 memory_region_size(&ms->device_memory->mr), 566 ms->numa_state->num_nodes - 1, 567 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 568 } 569 570 acpi_table_end(linker, &table); 571 } 572 573 /* 574 * ACPI spec, Revision 5.1 575 * 5.2.24 Generic Timer Description Table (GTDT) 576 */ 577 static void 578 build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 579 { 580 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 581 /* 582 * Table 5-117 Flag Definitions 583 * set only "Timer interrupt Mode" and assume "Timer Interrupt 584 * polarity" bit as '0: Interrupt is Active high' 585 */ 586 uint32_t irqflags = vmc->claim_edge_triggered_timers ? 587 1 : /* Interrupt is Edge triggered */ 588 0; /* Interrupt is Level triggered */ 589 AcpiTable table = { .sig = "GTDT", .rev = 2, .oem_id = vms->oem_id, 590 .oem_table_id = vms->oem_table_id }; 591 592 acpi_table_begin(&table, table_data); 593 594 /* CntControlBase Physical Address */ 595 build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8); 596 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 597 /* 598 * FIXME: clarify comment: 599 * The interrupt values are the same with the device tree when adding 16 600 */ 601 /* Secure EL1 timer GSIV */ 602 build_append_int_noprefix(table_data, ARCH_TIMER_S_EL1_IRQ + 16, 4); 603 /* Secure EL1 timer Flags */ 604 build_append_int_noprefix(table_data, irqflags, 4); 605 /* Non-Secure EL1 timer GSIV */ 606 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL1_IRQ + 16, 4); 607 /* Non-Secure EL1 timer Flags */ 608 build_append_int_noprefix(table_data, irqflags | 609 1UL << 2, /* Always-on Capability */ 610 4); 611 /* Virtual timer GSIV */ 612 build_append_int_noprefix(table_data, ARCH_TIMER_VIRT_IRQ + 16, 4); 613 /* Virtual Timer Flags */ 614 build_append_int_noprefix(table_data, irqflags, 4); 615 /* Non-Secure EL2 timer GSIV */ 616 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_IRQ + 16, 4); 617 /* Non-Secure EL2 timer Flags */ 618 build_append_int_noprefix(table_data, irqflags, 4); 619 /* CntReadBase Physical address */ 620 build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8); 621 /* Platform Timer Count */ 622 build_append_int_noprefix(table_data, 0, 4); 623 /* Platform Timer Offset */ 624 build_append_int_noprefix(table_data, 0, 4); 625 626 acpi_table_end(linker, &table); 627 } 628 629 /* Debug Port Table 2 (DBG2) */ 630 static void 631 build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 632 { 633 AcpiTable table = { .sig = "DBG2", .rev = 0, .oem_id = vms->oem_id, 634 .oem_table_id = vms->oem_table_id }; 635 int dbg2devicelength; 636 const char name[] = "COM0"; 637 const int namespace_length = sizeof(name); 638 639 acpi_table_begin(&table, table_data); 640 641 dbg2devicelength = 22 + /* BaseAddressRegister[] offset */ 642 12 + /* BaseAddressRegister[] */ 643 4 + /* AddressSize[] */ 644 namespace_length /* NamespaceString[] */; 645 646 /* OffsetDbgDeviceInfo */ 647 build_append_int_noprefix(table_data, 44, 4); 648 /* NumberDbgDeviceInfo */ 649 build_append_int_noprefix(table_data, 1, 4); 650 651 /* Table 2. Debug Device Information structure format */ 652 build_append_int_noprefix(table_data, 0, 1); /* Revision */ 653 build_append_int_noprefix(table_data, dbg2devicelength, 2); /* Length */ 654 /* NumberofGenericAddressRegisters */ 655 build_append_int_noprefix(table_data, 1, 1); 656 /* NameSpaceStringLength */ 657 build_append_int_noprefix(table_data, namespace_length, 2); 658 build_append_int_noprefix(table_data, 38, 2); /* NameSpaceStringOffset */ 659 build_append_int_noprefix(table_data, 0, 2); /* OemDataLength */ 660 /* OemDataOffset (0 means no OEM data) */ 661 build_append_int_noprefix(table_data, 0, 2); 662 663 /* Port Type */ 664 build_append_int_noprefix(table_data, 0x8000 /* Serial */, 2); 665 /* Port Subtype */ 666 build_append_int_noprefix(table_data, 0x3 /* ARM PL011 UART */, 2); 667 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 668 /* BaseAddressRegisterOffset */ 669 build_append_int_noprefix(table_data, 22, 2); 670 /* AddressSizeOffset */ 671 build_append_int_noprefix(table_data, 34, 2); 672 673 /* BaseAddressRegister[] */ 674 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, 675 vms->memmap[VIRT_UART].base); 676 677 /* AddressSize[] */ 678 build_append_int_noprefix(table_data, 679 vms->memmap[VIRT_UART].size, 4); 680 681 /* NamespaceString[] */ 682 g_array_append_vals(table_data, name, namespace_length); 683 684 acpi_table_end(linker, &table); 685 }; 686 687 /* 688 * ACPI spec, Revision 5.1 Errata A 689 * 5.2.12 Multiple APIC Description Table (MADT) 690 */ 691 static void build_append_gicr(GArray *table_data, uint64_t base, uint32_t size) 692 { 693 build_append_int_noprefix(table_data, 0xE, 1); /* Type */ 694 build_append_int_noprefix(table_data, 16, 1); /* Length */ 695 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 696 /* Discovery Range Base Addres */ 697 build_append_int_noprefix(table_data, base, 8); 698 build_append_int_noprefix(table_data, size, 4); /* Discovery Range Length */ 699 } 700 701 static void 702 build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 703 { 704 int i; 705 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 706 const MemMapEntry *memmap = vms->memmap; 707 AcpiTable table = { .sig = "APIC", .rev = 3, .oem_id = vms->oem_id, 708 .oem_table_id = vms->oem_table_id }; 709 710 acpi_table_begin(&table, table_data); 711 /* Local Interrupt Controller Address */ 712 build_append_int_noprefix(table_data, 0, 4); 713 build_append_int_noprefix(table_data, 0, 4); /* Flags */ 714 715 /* 5.2.12.15 GIC Distributor Structure */ 716 build_append_int_noprefix(table_data, 0xC, 1); /* Type */ 717 build_append_int_noprefix(table_data, 24, 1); /* Length */ 718 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 719 build_append_int_noprefix(table_data, 0, 4); /* GIC ID */ 720 /* Physical Base Address */ 721 build_append_int_noprefix(table_data, memmap[VIRT_GIC_DIST].base, 8); 722 build_append_int_noprefix(table_data, 0, 4); /* System Vector Base */ 723 /* GIC version */ 724 build_append_int_noprefix(table_data, vms->gic_version, 1); 725 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 726 727 for (i = 0; i < MACHINE(vms)->smp.cpus; i++) { 728 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i)); 729 uint64_t physical_base_address = 0, gich = 0, gicv = 0; 730 uint32_t vgic_interrupt = vms->virt ? PPI(ARCH_GIC_MAINT_IRQ) : 0; 731 uint32_t pmu_interrupt = arm_feature(&armcpu->env, ARM_FEATURE_PMU) ? 732 PPI(VIRTUAL_PMU_IRQ) : 0; 733 734 if (vms->gic_version == VIRT_GIC_VERSION_2) { 735 physical_base_address = memmap[VIRT_GIC_CPU].base; 736 gicv = memmap[VIRT_GIC_VCPU].base; 737 gich = memmap[VIRT_GIC_HYP].base; 738 } 739 740 /* 5.2.12.14 GIC Structure */ 741 build_append_int_noprefix(table_data, 0xB, 1); /* Type */ 742 build_append_int_noprefix(table_data, 76, 1); /* Length */ 743 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 744 build_append_int_noprefix(table_data, i, 4); /* GIC ID */ 745 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ 746 /* Flags */ 747 build_append_int_noprefix(table_data, 1, 4); /* Enabled */ 748 /* Parking Protocol Version */ 749 build_append_int_noprefix(table_data, 0, 4); 750 /* Performance Interrupt GSIV */ 751 build_append_int_noprefix(table_data, pmu_interrupt, 4); 752 build_append_int_noprefix(table_data, 0, 8); /* Parked Address */ 753 /* Physical Base Address */ 754 build_append_int_noprefix(table_data, physical_base_address, 8); 755 build_append_int_noprefix(table_data, gicv, 8); /* GICV */ 756 build_append_int_noprefix(table_data, gich, 8); /* GICH */ 757 /* VGIC Maintenance interrupt */ 758 build_append_int_noprefix(table_data, vgic_interrupt, 4); 759 build_append_int_noprefix(table_data, 0, 8); /* GICR Base Address*/ 760 /* MPIDR */ 761 build_append_int_noprefix(table_data, armcpu->mp_affinity, 8); 762 } 763 764 if (vms->gic_version != VIRT_GIC_VERSION_2) { 765 build_append_gicr(table_data, memmap[VIRT_GIC_REDIST].base, 766 memmap[VIRT_GIC_REDIST].size); 767 if (virt_gicv3_redist_region_count(vms) == 2) { 768 build_append_gicr(table_data, memmap[VIRT_HIGH_GIC_REDIST2].base, 769 memmap[VIRT_HIGH_GIC_REDIST2].size); 770 } 771 772 if (its_class_name() && !vmc->no_its) { 773 /* 774 * FIXME: Structure is from Revision 6.0 where 'GIC Structure' 775 * has additional fields on top of implemented 5.1 Errata A, 776 * to make it consistent with v6.0 we need to bump everything 777 * to v6.0 778 */ 779 /* 780 * ACPI spec, Revision 6.0 Errata A 781 * (original 6.0 definition has invalid Length) 782 * 5.2.12.18 GIC ITS Structure 783 */ 784 build_append_int_noprefix(table_data, 0xF, 1); /* Type */ 785 build_append_int_noprefix(table_data, 20, 1); /* Length */ 786 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 787 build_append_int_noprefix(table_data, 0, 4); /* GIC ITS ID */ 788 /* Physical Base Address */ 789 build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].base, 8); 790 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 791 } 792 } else { 793 const uint16_t spi_base = vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE; 794 795 /* 5.2.12.16 GIC MSI Frame Structure */ 796 build_append_int_noprefix(table_data, 0xD, 1); /* Type */ 797 build_append_int_noprefix(table_data, 24, 1); /* Length */ 798 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 799 build_append_int_noprefix(table_data, 0, 4); /* GIC MSI Frame ID */ 800 /* Physical Base Address */ 801 build_append_int_noprefix(table_data, memmap[VIRT_GIC_V2M].base, 8); 802 build_append_int_noprefix(table_data, 1, 4); /* Flags */ 803 /* SPI Count */ 804 build_append_int_noprefix(table_data, NUM_GICV2M_SPIS, 2); 805 build_append_int_noprefix(table_data, spi_base, 2); /* SPI Base */ 806 } 807 acpi_table_end(linker, &table); 808 } 809 810 /* FADT */ 811 static void build_fadt_rev5(GArray *table_data, BIOSLinker *linker, 812 VirtMachineState *vms, unsigned dsdt_tbl_offset) 813 { 814 /* ACPI v5.1 */ 815 AcpiFadtData fadt = { 816 .rev = 5, 817 .minor_ver = 1, 818 .flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI, 819 .xdsdt_tbl_offset = &dsdt_tbl_offset, 820 }; 821 822 switch (vms->psci_conduit) { 823 case QEMU_PSCI_CONDUIT_DISABLED: 824 fadt.arm_boot_arch = 0; 825 break; 826 case QEMU_PSCI_CONDUIT_HVC: 827 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT | 828 ACPI_FADT_ARM_PSCI_USE_HVC; 829 break; 830 case QEMU_PSCI_CONDUIT_SMC: 831 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT; 832 break; 833 default: 834 g_assert_not_reached(); 835 } 836 837 build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id); 838 } 839 840 /* DSDT */ 841 static void 842 build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 843 { 844 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 845 Aml *scope, *dsdt; 846 MachineState *ms = MACHINE(vms); 847 const MemMapEntry *memmap = vms->memmap; 848 const int *irqmap = vms->irqmap; 849 AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = vms->oem_id, 850 .oem_table_id = vms->oem_table_id }; 851 852 acpi_table_begin(&table, table_data); 853 dsdt = init_aml_allocator(); 854 855 /* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware. 856 * While UEFI can use libfdt to disable the RTC device node in the DTB that 857 * it passes to the OS, it cannot modify AML. Therefore, we won't generate 858 * the RTC ACPI device at all when using UEFI. 859 */ 860 scope = aml_scope("\\_SB"); 861 acpi_dsdt_add_cpus(scope, vms); 862 acpi_dsdt_add_uart(scope, &memmap[VIRT_UART], 863 (irqmap[VIRT_UART] + ARM_SPI_BASE)); 864 if (vmc->acpi_expose_flash) { 865 acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]); 866 } 867 acpi_dsdt_add_fw_cfg(scope, &memmap[VIRT_FW_CFG]); 868 acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO], 869 (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS); 870 acpi_dsdt_add_pci(scope, memmap, irqmap[VIRT_PCIE] + ARM_SPI_BASE, vms); 871 if (vms->acpi_dev) { 872 build_ged_aml(scope, "\\_SB."GED_DEVICE, 873 HOTPLUG_HANDLER(vms->acpi_dev), 874 irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY, 875 memmap[VIRT_ACPI_GED].base); 876 } else { 877 acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO], 878 (irqmap[VIRT_GPIO] + ARM_SPI_BASE)); 879 } 880 881 if (vms->acpi_dev) { 882 uint32_t event = object_property_get_uint(OBJECT(vms->acpi_dev), 883 "ged-event", &error_abort); 884 885 if (event & ACPI_GED_MEM_HOTPLUG_EVT) { 886 build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL, 887 AML_SYSTEM_MEMORY, 888 memmap[VIRT_PCDIMM_ACPI].base); 889 } 890 } 891 892 acpi_dsdt_add_power_button(scope); 893 #ifdef CONFIG_TPM 894 acpi_dsdt_add_tpm(scope, vms); 895 #endif 896 897 aml_append(dsdt, scope); 898 899 /* copy AML table into ACPI tables blob */ 900 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 901 902 acpi_table_end(linker, &table); 903 free_aml_allocator(); 904 } 905 906 typedef 907 struct AcpiBuildState { 908 /* Copy of table in RAM (for patching). */ 909 MemoryRegion *table_mr; 910 MemoryRegion *rsdp_mr; 911 MemoryRegion *linker_mr; 912 /* Is table patched? */ 913 bool patched; 914 } AcpiBuildState; 915 916 static void acpi_align_size(GArray *blob, unsigned align) 917 { 918 /* 919 * Align size to multiple of given size. This reduces the chance 920 * we need to change size in the future (breaking cross version migration). 921 */ 922 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 923 } 924 925 static 926 void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) 927 { 928 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 929 GArray *table_offsets; 930 unsigned dsdt, xsdt; 931 GArray *tables_blob = tables->table_data; 932 MachineState *ms = MACHINE(vms); 933 934 table_offsets = g_array_new(false, true /* clear */, 935 sizeof(uint32_t)); 936 937 bios_linker_loader_alloc(tables->linker, 938 ACPI_BUILD_TABLE_FILE, tables_blob, 939 64, false /* high memory */); 940 941 /* DSDT is pointed to by FADT */ 942 dsdt = tables_blob->len; 943 build_dsdt(tables_blob, tables->linker, vms); 944 945 /* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */ 946 acpi_add_table(table_offsets, tables_blob); 947 build_fadt_rev5(tables_blob, tables->linker, vms, dsdt); 948 949 acpi_add_table(table_offsets, tables_blob); 950 build_madt(tables_blob, tables->linker, vms); 951 952 if (!vmc->no_cpu_topology) { 953 acpi_add_table(table_offsets, tables_blob); 954 build_pptt(tables_blob, tables->linker, ms, 955 vms->oem_id, vms->oem_table_id); 956 } 957 958 acpi_add_table(table_offsets, tables_blob); 959 build_gtdt(tables_blob, tables->linker, vms); 960 961 acpi_add_table(table_offsets, tables_blob); 962 { 963 AcpiMcfgInfo mcfg = { 964 .base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base, 965 .size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size, 966 }; 967 build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id, 968 vms->oem_table_id); 969 } 970 971 acpi_add_table(table_offsets, tables_blob); 972 build_spcr(tables_blob, tables->linker, vms); 973 974 acpi_add_table(table_offsets, tables_blob); 975 build_dbg2(tables_blob, tables->linker, vms); 976 977 if (vms->ras) { 978 build_ghes_error_table(tables->hardware_errors, tables->linker); 979 acpi_add_table(table_offsets, tables_blob); 980 acpi_build_hest(tables_blob, tables->linker, vms->oem_id, 981 vms->oem_table_id); 982 } 983 984 if (ms->numa_state->num_nodes > 0) { 985 acpi_add_table(table_offsets, tables_blob); 986 build_srat(tables_blob, tables->linker, vms); 987 if (ms->numa_state->have_numa_distance) { 988 acpi_add_table(table_offsets, tables_blob); 989 build_slit(tables_blob, tables->linker, ms, vms->oem_id, 990 vms->oem_table_id); 991 } 992 } 993 994 if (ms->nvdimms_state->is_enabled) { 995 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 996 ms->nvdimms_state, ms->ram_slots, vms->oem_id, 997 vms->oem_table_id); 998 } 999 1000 if (its_class_name() && !vmc->no_its) { 1001 acpi_add_table(table_offsets, tables_blob); 1002 build_iort(tables_blob, tables->linker, vms); 1003 } 1004 1005 #ifdef CONFIG_TPM 1006 if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) { 1007 acpi_add_table(table_offsets, tables_blob); 1008 build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id, 1009 vms->oem_table_id); 1010 } 1011 #endif 1012 1013 if (vms->iommu == VIRT_IOMMU_VIRTIO) { 1014 acpi_add_table(table_offsets, tables_blob); 1015 build_viot(ms, tables_blob, tables->linker, vms->virtio_iommu_bdf, 1016 vms->oem_id, vms->oem_table_id); 1017 } 1018 1019 /* XSDT is pointed to by RSDP */ 1020 xsdt = tables_blob->len; 1021 build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id, 1022 vms->oem_table_id); 1023 1024 /* RSDP is in FSEG memory, so allocate it separately */ 1025 { 1026 AcpiRsdpData rsdp_data = { 1027 .revision = 2, 1028 .oem_id = vms->oem_id, 1029 .xsdt_tbl_offset = &xsdt, 1030 .rsdt_tbl_offset = NULL, 1031 }; 1032 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 1033 } 1034 1035 /* 1036 * The align size is 128, warn if 64k is not enough therefore 1037 * the align size could be resized. 1038 */ 1039 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 1040 warn_report("ACPI table size %u exceeds %d bytes," 1041 " migration may not work", 1042 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 1043 error_printf("Try removing CPUs, NUMA nodes, memory slots" 1044 " or PCI bridges."); 1045 } 1046 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 1047 1048 1049 /* Cleanup memory that's no longer used. */ 1050 g_array_free(table_offsets, true); 1051 } 1052 1053 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 1054 { 1055 uint32_t size = acpi_data_len(data); 1056 1057 /* Make sure RAM size is correct - in case it got changed 1058 * e.g. by migration */ 1059 memory_region_ram_resize(mr, size, &error_abort); 1060 1061 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 1062 memory_region_set_dirty(mr, 0, size); 1063 } 1064 1065 static void virt_acpi_build_update(void *build_opaque) 1066 { 1067 AcpiBuildState *build_state = build_opaque; 1068 AcpiBuildTables tables; 1069 1070 /* No state to update or already patched? Nothing to do. */ 1071 if (!build_state || build_state->patched) { 1072 return; 1073 } 1074 build_state->patched = true; 1075 1076 acpi_build_tables_init(&tables); 1077 1078 virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables); 1079 1080 acpi_ram_update(build_state->table_mr, tables.table_data); 1081 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 1082 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 1083 1084 acpi_build_tables_cleanup(&tables, true); 1085 } 1086 1087 static void virt_acpi_build_reset(void *build_opaque) 1088 { 1089 AcpiBuildState *build_state = build_opaque; 1090 build_state->patched = false; 1091 } 1092 1093 static const VMStateDescription vmstate_virt_acpi_build = { 1094 .name = "virt_acpi_build", 1095 .version_id = 1, 1096 .minimum_version_id = 1, 1097 .fields = (VMStateField[]) { 1098 VMSTATE_BOOL(patched, AcpiBuildState), 1099 VMSTATE_END_OF_LIST() 1100 }, 1101 }; 1102 1103 void virt_acpi_setup(VirtMachineState *vms) 1104 { 1105 AcpiBuildTables tables; 1106 AcpiBuildState *build_state; 1107 AcpiGedState *acpi_ged_state; 1108 1109 if (!vms->fw_cfg) { 1110 trace_virt_acpi_setup(); 1111 return; 1112 } 1113 1114 if (!virt_is_acpi_enabled(vms)) { 1115 trace_virt_acpi_setup(); 1116 return; 1117 } 1118 1119 build_state = g_malloc0(sizeof *build_state); 1120 1121 acpi_build_tables_init(&tables); 1122 virt_acpi_build(vms, &tables); 1123 1124 /* Now expose it all to Guest */ 1125 build_state->table_mr = acpi_add_rom_blob(virt_acpi_build_update, 1126 build_state, tables.table_data, 1127 ACPI_BUILD_TABLE_FILE); 1128 assert(build_state->table_mr != NULL); 1129 1130 build_state->linker_mr = acpi_add_rom_blob(virt_acpi_build_update, 1131 build_state, 1132 tables.linker->cmd_blob, 1133 ACPI_BUILD_LOADER_FILE); 1134 1135 fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, 1136 acpi_data_len(tables.tcpalog)); 1137 1138 if (vms->ras) { 1139 assert(vms->acpi_dev); 1140 acpi_ged_state = ACPI_GED(vms->acpi_dev); 1141 acpi_ghes_add_fw_cfg(&acpi_ged_state->ghes_state, 1142 vms->fw_cfg, tables.hardware_errors); 1143 } 1144 1145 build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update, 1146 build_state, tables.rsdp, 1147 ACPI_BUILD_RSDP_FILE); 1148 1149 qemu_register_reset(virt_acpi_build_reset, build_state); 1150 virt_acpi_build_reset(build_state); 1151 vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state); 1152 1153 /* Cleanup tables but don't free the memory: we track it 1154 * in build_state. 1155 */ 1156 acpi_build_tables_cleanup(&tables, false); 1157 } 1158