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, bool use_highmem, bool highmem_ecam, 162 VirtMachineState *vms) 163 { 164 int ecam_id = VIRT_ECAM_ID(highmem_ecam); 165 struct GPEXConfig cfg = { 166 .mmio32 = memmap[VIRT_PCIE_MMIO], 167 .pio = memmap[VIRT_PCIE_PIO], 168 .ecam = memmap[ecam_id], 169 .irq = irq, 170 .bus = vms->bus, 171 }; 172 173 if (use_highmem) { 174 cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO]; 175 } 176 177 acpi_dsdt_add_gpex(scope, &cfg); 178 } 179 180 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap, 181 uint32_t gpio_irq) 182 { 183 Aml *dev = aml_device("GPO0"); 184 aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061"))); 185 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 186 187 Aml *crs = aml_resource_template(); 188 aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size, 189 AML_READ_WRITE)); 190 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 191 AML_EXCLUSIVE, &gpio_irq, 1)); 192 aml_append(dev, aml_name_decl("_CRS", crs)); 193 194 Aml *aei = aml_resource_template(); 195 /* Pin 3 for power button */ 196 const uint32_t pin_list[1] = {3}; 197 aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, 198 AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1, 199 "GPO0", NULL, 0)); 200 aml_append(dev, aml_name_decl("_AEI", aei)); 201 202 /* _E03 is handle for power button */ 203 Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED); 204 aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), 205 aml_int(0x80))); 206 aml_append(dev, method); 207 aml_append(scope, dev); 208 } 209 210 #ifdef CONFIG_TPM 211 static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms) 212 { 213 PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); 214 hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base; 215 SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find()); 216 MemoryRegion *sbdev_mr; 217 hwaddr tpm_base; 218 219 if (!sbdev) { 220 return; 221 } 222 223 tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0); 224 assert(tpm_base != -1); 225 226 tpm_base += pbus_base; 227 228 sbdev_mr = sysbus_mmio_get_region(sbdev, 0); 229 230 Aml *dev = aml_device("TPM0"); 231 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 232 aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); 233 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 234 235 Aml *crs = aml_resource_template(); 236 aml_append(crs, 237 aml_memory32_fixed(tpm_base, 238 (uint32_t)memory_region_size(sbdev_mr), 239 AML_READ_WRITE)); 240 aml_append(dev, aml_name_decl("_CRS", crs)); 241 aml_append(scope, dev); 242 } 243 #endif 244 245 #define ID_MAPPING_ENTRY_SIZE 20 246 #define SMMU_V3_ENTRY_SIZE 68 247 #define ROOT_COMPLEX_ENTRY_SIZE 36 248 #define IORT_NODE_OFFSET 48 249 250 static void build_iort_id_mapping(GArray *table_data, uint32_t input_base, 251 uint32_t id_count, uint32_t out_ref) 252 { 253 /* Table 4 ID mapping format */ 254 build_append_int_noprefix(table_data, input_base, 4); /* Input base */ 255 build_append_int_noprefix(table_data, id_count, 4); /* Number of IDs */ 256 build_append_int_noprefix(table_data, input_base, 4); /* Output base */ 257 build_append_int_noprefix(table_data, out_ref, 4); /* Output Reference */ 258 /* Flags */ 259 build_append_int_noprefix(table_data, 0 /* Single mapping (disabled) */, 4); 260 } 261 262 struct AcpiIortIdMapping { 263 uint32_t input_base; 264 uint32_t id_count; 265 }; 266 typedef struct AcpiIortIdMapping AcpiIortIdMapping; 267 268 /* Build the iort ID mapping to SMMUv3 for a given PCI host bridge */ 269 static int 270 iort_host_bridges(Object *obj, void *opaque) 271 { 272 GArray *idmap_blob = opaque; 273 274 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 275 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 276 277 if (bus && !pci_bus_bypass_iommu(bus)) { 278 int min_bus, max_bus; 279 280 pci_bus_range(bus, &min_bus, &max_bus); 281 282 AcpiIortIdMapping idmap = { 283 .input_base = min_bus << 8, 284 .id_count = (max_bus - min_bus + 1) << 8, 285 }; 286 g_array_append_val(idmap_blob, idmap); 287 } 288 } 289 290 return 0; 291 } 292 293 static int iort_idmap_compare(gconstpointer a, gconstpointer b) 294 { 295 AcpiIortIdMapping *idmap_a = (AcpiIortIdMapping *)a; 296 AcpiIortIdMapping *idmap_b = (AcpiIortIdMapping *)b; 297 298 return idmap_a->input_base - idmap_b->input_base; 299 } 300 301 /* 302 * Input Output Remapping Table (IORT) 303 * Conforms to "IO Remapping Table System Software on ARM Platforms", 304 * Document number: ARM DEN 0049E.b, Feb 2021 305 */ 306 static void 307 build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 308 { 309 int i, nb_nodes, rc_mapping_count; 310 const uint32_t iort_node_offset = IORT_NODE_OFFSET; 311 size_t node_size, smmu_offset = 0; 312 AcpiIortIdMapping *idmap; 313 uint32_t id = 0; 314 GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); 315 GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); 316 317 AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id, 318 .oem_table_id = vms->oem_table_id }; 319 /* Table 2 The IORT */ 320 acpi_table_begin(&table, table_data); 321 322 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 323 AcpiIortIdMapping next_range = {0}; 324 325 object_child_foreach_recursive(object_get_root(), 326 iort_host_bridges, smmu_idmaps); 327 328 /* Sort the smmu idmap by input_base */ 329 g_array_sort(smmu_idmaps, iort_idmap_compare); 330 331 /* 332 * Split the whole RIDs by mapping from RC to SMMU, 333 * build the ID mapping from RC to ITS directly. 334 */ 335 for (i = 0; i < smmu_idmaps->len; i++) { 336 idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); 337 338 if (next_range.input_base < idmap->input_base) { 339 next_range.id_count = idmap->input_base - next_range.input_base; 340 g_array_append_val(its_idmaps, next_range); 341 } 342 343 next_range.input_base = idmap->input_base + idmap->id_count; 344 } 345 346 /* Append the last RC -> ITS ID mapping */ 347 if (next_range.input_base < 0xFFFF) { 348 next_range.id_count = 0xFFFF - next_range.input_base; 349 g_array_append_val(its_idmaps, next_range); 350 } 351 352 nb_nodes = 3; /* RC, ITS, SMMUv3 */ 353 rc_mapping_count = smmu_idmaps->len + its_idmaps->len; 354 } else { 355 nb_nodes = 2; /* RC, ITS */ 356 rc_mapping_count = 1; 357 } 358 /* Number of IORT Nodes */ 359 build_append_int_noprefix(table_data, nb_nodes, 4); 360 361 /* Offset to Array of IORT Nodes */ 362 build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4); 363 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 364 365 /* Table 12 ITS Group Format */ 366 build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */ 367 node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */; 368 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 369 build_append_int_noprefix(table_data, 1, 1); /* Revision */ 370 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 371 build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */ 372 build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */ 373 build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */ 374 /* GIC ITS Identifier Array */ 375 build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4); 376 377 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 378 int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE; 379 380 smmu_offset = table_data->len - table.table_offset; 381 /* Table 9 SMMUv3 Format */ 382 build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */ 383 node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE; 384 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 385 build_append_int_noprefix(table_data, 4, 1); /* Revision */ 386 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 387 build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */ 388 /* Reference to ID Array */ 389 build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4); 390 /* Base address */ 391 build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8); 392 /* Flags */ 393 build_append_int_noprefix(table_data, 1 /* COHACC Override */, 4); 394 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 395 build_append_int_noprefix(table_data, 0, 8); /* VATOS address */ 396 /* Model */ 397 build_append_int_noprefix(table_data, 0 /* Generic SMMU-v3 */, 4); 398 build_append_int_noprefix(table_data, irq, 4); /* Event */ 399 build_append_int_noprefix(table_data, irq + 1, 4); /* PRI */ 400 build_append_int_noprefix(table_data, irq + 3, 4); /* GERR */ 401 build_append_int_noprefix(table_data, irq + 2, 4); /* Sync */ 402 build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */ 403 /* DeviceID mapping index (ignored since interrupts are GSIV based) */ 404 build_append_int_noprefix(table_data, 0, 4); 405 406 /* output IORT node is the ITS group node (the first node) */ 407 build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); 408 } 409 410 /* Table 17 Root Complex Node */ 411 build_append_int_noprefix(table_data, 2 /* Root complex */, 1); /* Type */ 412 node_size = ROOT_COMPLEX_ENTRY_SIZE + 413 ID_MAPPING_ENTRY_SIZE * rc_mapping_count; 414 build_append_int_noprefix(table_data, node_size, 2); /* Length */ 415 build_append_int_noprefix(table_data, 3, 1); /* Revision */ 416 build_append_int_noprefix(table_data, id++, 4); /* Identifier */ 417 /* Number of ID mappings */ 418 build_append_int_noprefix(table_data, rc_mapping_count, 4); 419 /* Reference to ID Array */ 420 build_append_int_noprefix(table_data, ROOT_COMPLEX_ENTRY_SIZE, 4); 421 422 /* Table 14 Memory access properties */ 423 /* CCA: Cache Coherent Attribute */ 424 build_append_int_noprefix(table_data, 1 /* fully coherent */, 4); 425 build_append_int_noprefix(table_data, 0, 1); /* AH: Note Allocation Hints */ 426 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 427 /* Table 15 Memory Access Flags */ 428 build_append_int_noprefix(table_data, 0x3 /* CCA = CPM = DACS = 1 */, 1); 429 430 build_append_int_noprefix(table_data, 0, 4); /* ATS Attribute */ 431 /* MCFG pci_segment */ 432 build_append_int_noprefix(table_data, 0, 4); /* PCI Segment number */ 433 434 /* Memory address size limit */ 435 build_append_int_noprefix(table_data, 64, 1); 436 437 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 438 439 /* Output Reference */ 440 if (vms->iommu == VIRT_IOMMU_SMMUV3) { 441 AcpiIortIdMapping *range; 442 443 /* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */ 444 for (i = 0; i < smmu_idmaps->len; i++) { 445 range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); 446 /* output IORT node is the smmuv3 node */ 447 build_iort_id_mapping(table_data, range->input_base, 448 range->id_count, smmu_offset); 449 } 450 451 /* bypassed RIDs connect to ITS group node directly: RC -> ITS */ 452 for (i = 0; i < its_idmaps->len; i++) { 453 range = &g_array_index(its_idmaps, AcpiIortIdMapping, i); 454 /* output IORT node is the ITS group node (the first node) */ 455 build_iort_id_mapping(table_data, range->input_base, 456 range->id_count, iort_node_offset); 457 } 458 } else { 459 /* output IORT node is the ITS group node (the first node) */ 460 build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); 461 } 462 463 acpi_table_end(linker, &table); 464 g_array_free(smmu_idmaps, true); 465 g_array_free(its_idmaps, true); 466 } 467 468 /* 469 * Serial Port Console Redirection Table (SPCR) 470 * Rev: 1.07 471 */ 472 static void 473 build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 474 { 475 AcpiTable table = { .sig = "SPCR", .rev = 2, .oem_id = vms->oem_id, 476 .oem_table_id = vms->oem_table_id }; 477 478 acpi_table_begin(&table, table_data); 479 480 /* Interface Type */ 481 build_append_int_noprefix(table_data, 3, 1); /* ARM PL011 UART */ 482 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 483 /* Base Address */ 484 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, 485 vms->memmap[VIRT_UART].base); 486 /* Interrupt Type */ 487 build_append_int_noprefix(table_data, 488 (1 << 3) /* Bit[3] ARMH GIC interrupt */, 1); 489 build_append_int_noprefix(table_data, 0, 1); /* IRQ */ 490 /* Global System Interrupt */ 491 build_append_int_noprefix(table_data, 492 vms->irqmap[VIRT_UART] + ARM_SPI_BASE, 4); 493 build_append_int_noprefix(table_data, 3 /* 9600 */, 1); /* Baud Rate */ 494 build_append_int_noprefix(table_data, 0 /* No Parity */, 1); /* Parity */ 495 /* Stop Bits */ 496 build_append_int_noprefix(table_data, 1 /* 1 Stop bit */, 1); 497 /* Flow Control */ 498 build_append_int_noprefix(table_data, 499 (1 << 1) /* RTS/CTS hardware flow control */, 1); 500 /* Terminal Type */ 501 build_append_int_noprefix(table_data, 0 /* VT100 */, 1); 502 build_append_int_noprefix(table_data, 0, 1); /* Language */ 503 /* PCI Device ID */ 504 build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); 505 /* PCI Vendor ID */ 506 build_append_int_noprefix(table_data, 0xffff /* not a PCI device*/, 2); 507 build_append_int_noprefix(table_data, 0, 1); /* PCI Bus Number */ 508 build_append_int_noprefix(table_data, 0, 1); /* PCI Device Number */ 509 build_append_int_noprefix(table_data, 0, 1); /* PCI Function Number */ 510 build_append_int_noprefix(table_data, 0, 4); /* PCI Flags */ 511 build_append_int_noprefix(table_data, 0, 1); /* PCI Segment */ 512 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 513 514 acpi_table_end(linker, &table); 515 } 516 517 /* 518 * ACPI spec, Revision 5.1 519 * 5.2.16 System Resource Affinity Table (SRAT) 520 */ 521 static void 522 build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 523 { 524 int i; 525 uint64_t mem_base; 526 MachineClass *mc = MACHINE_GET_CLASS(vms); 527 MachineState *ms = MACHINE(vms); 528 const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms); 529 AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id, 530 .oem_table_id = vms->oem_table_id }; 531 532 acpi_table_begin(&table, table_data); 533 build_append_int_noprefix(table_data, 1, 4); /* Reserved */ 534 build_append_int_noprefix(table_data, 0, 8); /* Reserved */ 535 536 for (i = 0; i < cpu_list->len; ++i) { 537 uint32_t nodeid = cpu_list->cpus[i].props.node_id; 538 /* 539 * 5.2.16.4 GICC Affinity Structure 540 */ 541 build_append_int_noprefix(table_data, 3, 1); /* Type */ 542 build_append_int_noprefix(table_data, 18, 1); /* Length */ 543 build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */ 544 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ 545 /* Flags, Table 5-76 */ 546 build_append_int_noprefix(table_data, 1 /* Enabled */, 4); 547 build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ 548 } 549 550 mem_base = vms->memmap[VIRT_MEM].base; 551 for (i = 0; i < ms->numa_state->num_nodes; ++i) { 552 if (ms->numa_state->nodes[i].node_mem > 0) { 553 build_srat_memory(table_data, mem_base, 554 ms->numa_state->nodes[i].node_mem, i, 555 MEM_AFFINITY_ENABLED); 556 mem_base += ms->numa_state->nodes[i].node_mem; 557 } 558 } 559 560 if (ms->nvdimms_state->is_enabled) { 561 nvdimm_build_srat(table_data); 562 } 563 564 if (ms->device_memory) { 565 build_srat_memory(table_data, ms->device_memory->base, 566 memory_region_size(&ms->device_memory->mr), 567 ms->numa_state->num_nodes - 1, 568 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 569 } 570 571 acpi_table_end(linker, &table); 572 } 573 574 /* 575 * ACPI spec, Revision 5.1 576 * 5.2.24 Generic Timer Description Table (GTDT) 577 */ 578 static void 579 build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 580 { 581 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 582 /* 583 * Table 5-117 Flag Definitions 584 * set only "Timer interrupt Mode" and assume "Timer Interrupt 585 * polarity" bit as '0: Interrupt is Active high' 586 */ 587 uint32_t irqflags = vmc->claim_edge_triggered_timers ? 588 1 : /* Interrupt is Edge triggered */ 589 0; /* Interrupt is Level triggered */ 590 AcpiTable table = { .sig = "GTDT", .rev = 2, .oem_id = vms->oem_id, 591 .oem_table_id = vms->oem_table_id }; 592 593 acpi_table_begin(&table, table_data); 594 595 /* CntControlBase Physical Address */ 596 /* FIXME: invalid value, should be 0xFFFFFFFFFFFFFFFF if not impl. ? */ 597 build_append_int_noprefix(table_data, 0, 8); 598 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 599 /* 600 * FIXME: clarify comment: 601 * The interrupt values are the same with the device tree when adding 16 602 */ 603 /* Secure EL1 timer GSIV */ 604 build_append_int_noprefix(table_data, ARCH_TIMER_S_EL1_IRQ + 16, 4); 605 /* Secure EL1 timer Flags */ 606 build_append_int_noprefix(table_data, irqflags, 4); 607 /* Non-Secure EL1 timer GSIV */ 608 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL1_IRQ + 16, 4); 609 /* Non-Secure EL1 timer Flags */ 610 build_append_int_noprefix(table_data, irqflags | 611 1UL << 2, /* Always-on Capability */ 612 4); 613 /* Virtual timer GSIV */ 614 build_append_int_noprefix(table_data, ARCH_TIMER_VIRT_IRQ + 16, 4); 615 /* Virtual Timer Flags */ 616 build_append_int_noprefix(table_data, irqflags, 4); 617 /* Non-Secure EL2 timer GSIV */ 618 build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_IRQ + 16, 4); 619 /* Non-Secure EL2 timer Flags */ 620 build_append_int_noprefix(table_data, irqflags, 4); 621 /* CntReadBase Physical address */ 622 build_append_int_noprefix(table_data, 0, 8); 623 /* Platform Timer Count */ 624 build_append_int_noprefix(table_data, 0, 4); 625 /* Platform Timer Offset */ 626 build_append_int_noprefix(table_data, 0, 4); 627 628 acpi_table_end(linker, &table); 629 } 630 631 /* Debug Port Table 2 (DBG2) */ 632 static void 633 build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 634 { 635 AcpiTable table = { .sig = "DBG2", .rev = 0, .oem_id = vms->oem_id, 636 .oem_table_id = vms->oem_table_id }; 637 int dbg2devicelength; 638 const char name[] = "COM0"; 639 const int namespace_length = sizeof(name); 640 641 acpi_table_begin(&table, table_data); 642 643 dbg2devicelength = 22 + /* BaseAddressRegister[] offset */ 644 12 + /* BaseAddressRegister[] */ 645 4 + /* AddressSize[] */ 646 namespace_length /* NamespaceString[] */; 647 648 /* OffsetDbgDeviceInfo */ 649 build_append_int_noprefix(table_data, 44, 4); 650 /* NumberDbgDeviceInfo */ 651 build_append_int_noprefix(table_data, 1, 4); 652 653 /* Table 2. Debug Device Information structure format */ 654 build_append_int_noprefix(table_data, 0, 1); /* Revision */ 655 build_append_int_noprefix(table_data, dbg2devicelength, 2); /* Length */ 656 /* NumberofGenericAddressRegisters */ 657 build_append_int_noprefix(table_data, 1, 1); 658 /* NameSpaceStringLength */ 659 build_append_int_noprefix(table_data, namespace_length, 2); 660 build_append_int_noprefix(table_data, 38, 2); /* NameSpaceStringOffset */ 661 build_append_int_noprefix(table_data, 0, 2); /* OemDataLength */ 662 /* OemDataOffset (0 means no OEM data) */ 663 build_append_int_noprefix(table_data, 0, 2); 664 665 /* Port Type */ 666 build_append_int_noprefix(table_data, 0x8000 /* Serial */, 2); 667 /* Port Subtype */ 668 build_append_int_noprefix(table_data, 0x3 /* ARM PL011 UART */, 2); 669 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 670 /* BaseAddressRegisterOffset */ 671 build_append_int_noprefix(table_data, 22, 2); 672 /* AddressSizeOffset */ 673 build_append_int_noprefix(table_data, 34, 2); 674 675 /* BaseAddressRegister[] */ 676 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, 677 vms->memmap[VIRT_UART].base); 678 679 /* AddressSize[] */ 680 build_append_int_noprefix(table_data, 681 vms->memmap[VIRT_UART].size, 4); 682 683 /* NamespaceString[] */ 684 g_array_append_vals(table_data, name, namespace_length); 685 686 acpi_table_end(linker, &table); 687 }; 688 689 /* 690 * ACPI spec, Revision 5.1 Errata A 691 * 5.2.12 Multiple APIC Description Table (MADT) 692 */ 693 static void build_append_gicr(GArray *table_data, uint64_t base, uint32_t size) 694 { 695 build_append_int_noprefix(table_data, 0xE, 1); /* Type */ 696 build_append_int_noprefix(table_data, 16, 1); /* Length */ 697 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 698 /* Discovery Range Base Addres */ 699 build_append_int_noprefix(table_data, base, 8); 700 build_append_int_noprefix(table_data, size, 4); /* Discovery Range Length */ 701 } 702 703 static void 704 build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 705 { 706 int i; 707 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 708 const MemMapEntry *memmap = vms->memmap; 709 AcpiTable table = { .sig = "APIC", .rev = 3, .oem_id = vms->oem_id, 710 .oem_table_id = vms->oem_table_id }; 711 712 acpi_table_begin(&table, table_data); 713 /* Local Interrupt Controller Address */ 714 build_append_int_noprefix(table_data, 0, 4); 715 build_append_int_noprefix(table_data, 0, 4); /* Flags */ 716 717 /* 5.2.12.15 GIC Distributor Structure */ 718 build_append_int_noprefix(table_data, 0xC, 1); /* Type */ 719 build_append_int_noprefix(table_data, 24, 1); /* Length */ 720 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 721 build_append_int_noprefix(table_data, 0, 4); /* GIC ID */ 722 /* Physical Base Address */ 723 build_append_int_noprefix(table_data, memmap[VIRT_GIC_DIST].base, 8); 724 build_append_int_noprefix(table_data, 0, 4); /* System Vector Base */ 725 /* GIC version */ 726 build_append_int_noprefix(table_data, vms->gic_version, 1); 727 build_append_int_noprefix(table_data, 0, 3); /* Reserved */ 728 729 for (i = 0; i < MACHINE(vms)->smp.cpus; i++) { 730 ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i)); 731 uint64_t physical_base_address = 0, gich = 0, gicv = 0; 732 uint32_t vgic_interrupt = vms->virt ? PPI(ARCH_GIC_MAINT_IRQ) : 0; 733 uint32_t pmu_interrupt = arm_feature(&armcpu->env, ARM_FEATURE_PMU) ? 734 PPI(VIRTUAL_PMU_IRQ) : 0; 735 736 if (vms->gic_version == 2) { 737 physical_base_address = memmap[VIRT_GIC_CPU].base; 738 gicv = memmap[VIRT_GIC_VCPU].base; 739 gich = memmap[VIRT_GIC_HYP].base; 740 } 741 742 /* 5.2.12.14 GIC Structure */ 743 build_append_int_noprefix(table_data, 0xB, 1); /* Type */ 744 build_append_int_noprefix(table_data, 76, 1); /* Length */ 745 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 746 build_append_int_noprefix(table_data, i, 4); /* GIC ID */ 747 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ 748 /* Flags */ 749 build_append_int_noprefix(table_data, 1, 4); /* Enabled */ 750 /* Parking Protocol Version */ 751 build_append_int_noprefix(table_data, 0, 4); 752 /* Performance Interrupt GSIV */ 753 build_append_int_noprefix(table_data, pmu_interrupt, 4); 754 build_append_int_noprefix(table_data, 0, 8); /* Parked Address */ 755 /* Physical Base Address */ 756 build_append_int_noprefix(table_data, physical_base_address, 8); 757 build_append_int_noprefix(table_data, gicv, 8); /* GICV */ 758 build_append_int_noprefix(table_data, gich, 8); /* GICH */ 759 /* VGIC Maintenance interrupt */ 760 build_append_int_noprefix(table_data, vgic_interrupt, 4); 761 build_append_int_noprefix(table_data, 0, 8); /* GICR Base Address*/ 762 /* MPIDR */ 763 build_append_int_noprefix(table_data, armcpu->mp_affinity, 8); 764 } 765 766 if (vms->gic_version == 3) { 767 build_append_gicr(table_data, memmap[VIRT_GIC_REDIST].base, 768 memmap[VIRT_GIC_REDIST].size); 769 if (virt_gicv3_redist_region_count(vms) == 2) { 770 build_append_gicr(table_data, memmap[VIRT_HIGH_GIC_REDIST2].base, 771 memmap[VIRT_HIGH_GIC_REDIST2].size); 772 } 773 774 if (its_class_name() && !vmc->no_its) { 775 /* 776 * FIXME: Structure is from Revision 6.0 where 'GIC Structure' 777 * has additional fields on top of implemented 5.1 Errata A, 778 * to make it consistent with v6.0 we need to bump everything 779 * to v6.0 780 */ 781 /* 782 * ACPI spec, Revision 6.0 Errata A 783 * (original 6.0 definition has invalid Length) 784 * 5.2.12.18 GIC ITS Structure 785 */ 786 build_append_int_noprefix(table_data, 0xF, 1); /* Type */ 787 build_append_int_noprefix(table_data, 20, 1); /* Length */ 788 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 789 build_append_int_noprefix(table_data, 0, 4); /* GIC ITS ID */ 790 /* Physical Base Address */ 791 build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].base, 8); 792 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 793 } 794 } else { 795 const uint16_t spi_base = vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE; 796 797 /* 5.2.12.16 GIC MSI Frame Structure */ 798 build_append_int_noprefix(table_data, 0xD, 1); /* Type */ 799 build_append_int_noprefix(table_data, 24, 1); /* Length */ 800 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 801 build_append_int_noprefix(table_data, 0, 4); /* GIC MSI Frame ID */ 802 /* Physical Base Address */ 803 build_append_int_noprefix(table_data, memmap[VIRT_GIC_V2M].base, 8); 804 build_append_int_noprefix(table_data, 1, 4); /* Flags */ 805 /* SPI Count */ 806 build_append_int_noprefix(table_data, NUM_GICV2M_SPIS, 2); 807 build_append_int_noprefix(table_data, spi_base, 2); /* SPI Base */ 808 } 809 acpi_table_end(linker, &table); 810 } 811 812 /* FADT */ 813 static void build_fadt_rev5(GArray *table_data, BIOSLinker *linker, 814 VirtMachineState *vms, unsigned dsdt_tbl_offset) 815 { 816 /* ACPI v5.1 */ 817 AcpiFadtData fadt = { 818 .rev = 5, 819 .minor_ver = 1, 820 .flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI, 821 .xdsdt_tbl_offset = &dsdt_tbl_offset, 822 }; 823 824 switch (vms->psci_conduit) { 825 case QEMU_PSCI_CONDUIT_DISABLED: 826 fadt.arm_boot_arch = 0; 827 break; 828 case QEMU_PSCI_CONDUIT_HVC: 829 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT | 830 ACPI_FADT_ARM_PSCI_USE_HVC; 831 break; 832 case QEMU_PSCI_CONDUIT_SMC: 833 fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT; 834 break; 835 default: 836 g_assert_not_reached(); 837 } 838 839 build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id); 840 } 841 842 /* DSDT */ 843 static void 844 build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) 845 { 846 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 847 Aml *scope, *dsdt; 848 MachineState *ms = MACHINE(vms); 849 const MemMapEntry *memmap = vms->memmap; 850 const int *irqmap = vms->irqmap; 851 AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = vms->oem_id, 852 .oem_table_id = vms->oem_table_id }; 853 854 acpi_table_begin(&table, table_data); 855 dsdt = init_aml_allocator(); 856 857 /* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware. 858 * While UEFI can use libfdt to disable the RTC device node in the DTB that 859 * it passes to the OS, it cannot modify AML. Therefore, we won't generate 860 * the RTC ACPI device at all when using UEFI. 861 */ 862 scope = aml_scope("\\_SB"); 863 acpi_dsdt_add_cpus(scope, vms); 864 acpi_dsdt_add_uart(scope, &memmap[VIRT_UART], 865 (irqmap[VIRT_UART] + ARM_SPI_BASE)); 866 if (vmc->acpi_expose_flash) { 867 acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]); 868 } 869 acpi_dsdt_add_fw_cfg(scope, &memmap[VIRT_FW_CFG]); 870 acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO], 871 (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS); 872 acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE), 873 vms->highmem, vms->highmem_ecam, vms); 874 if (vms->acpi_dev) { 875 build_ged_aml(scope, "\\_SB."GED_DEVICE, 876 HOTPLUG_HANDLER(vms->acpi_dev), 877 irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY, 878 memmap[VIRT_ACPI_GED].base); 879 } else { 880 acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO], 881 (irqmap[VIRT_GPIO] + ARM_SPI_BASE)); 882 } 883 884 if (vms->acpi_dev) { 885 uint32_t event = object_property_get_uint(OBJECT(vms->acpi_dev), 886 "ged-event", &error_abort); 887 888 if (event & ACPI_GED_MEM_HOTPLUG_EVT) { 889 build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL, 890 AML_SYSTEM_MEMORY, 891 memmap[VIRT_PCDIMM_ACPI].base); 892 } 893 } 894 895 acpi_dsdt_add_power_button(scope); 896 #ifdef CONFIG_TPM 897 acpi_dsdt_add_tpm(scope, vms); 898 #endif 899 900 aml_append(dsdt, scope); 901 902 /* copy AML table into ACPI tables blob */ 903 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 904 905 acpi_table_end(linker, &table); 906 free_aml_allocator(); 907 } 908 909 typedef 910 struct AcpiBuildState { 911 /* Copy of table in RAM (for patching). */ 912 MemoryRegion *table_mr; 913 MemoryRegion *rsdp_mr; 914 MemoryRegion *linker_mr; 915 /* Is table patched? */ 916 bool patched; 917 } AcpiBuildState; 918 919 static void acpi_align_size(GArray *blob, unsigned align) 920 { 921 /* 922 * Align size to multiple of given size. This reduces the chance 923 * we need to change size in the future (breaking cross version migration). 924 */ 925 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 926 } 927 928 static 929 void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) 930 { 931 VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); 932 GArray *table_offsets; 933 unsigned dsdt, xsdt; 934 GArray *tables_blob = tables->table_data; 935 MachineState *ms = MACHINE(vms); 936 937 table_offsets = g_array_new(false, true /* clear */, 938 sizeof(uint32_t)); 939 940 bios_linker_loader_alloc(tables->linker, 941 ACPI_BUILD_TABLE_FILE, tables_blob, 942 64, false /* high memory */); 943 944 /* DSDT is pointed to by FADT */ 945 dsdt = tables_blob->len; 946 build_dsdt(tables_blob, tables->linker, vms); 947 948 /* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */ 949 acpi_add_table(table_offsets, tables_blob); 950 build_fadt_rev5(tables_blob, tables->linker, vms, dsdt); 951 952 acpi_add_table(table_offsets, tables_blob); 953 build_madt(tables_blob, tables->linker, vms); 954 955 if (!vmc->no_cpu_topology) { 956 acpi_add_table(table_offsets, tables_blob); 957 build_pptt(tables_blob, tables->linker, ms, 958 vms->oem_id, vms->oem_table_id); 959 } 960 961 acpi_add_table(table_offsets, tables_blob); 962 build_gtdt(tables_blob, tables->linker, vms); 963 964 acpi_add_table(table_offsets, tables_blob); 965 { 966 AcpiMcfgInfo mcfg = { 967 .base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base, 968 .size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size, 969 }; 970 build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id, 971 vms->oem_table_id); 972 } 973 974 acpi_add_table(table_offsets, tables_blob); 975 build_spcr(tables_blob, tables->linker, vms); 976 977 acpi_add_table(table_offsets, tables_blob); 978 build_dbg2(tables_blob, tables->linker, vms); 979 980 if (vms->ras) { 981 build_ghes_error_table(tables->hardware_errors, tables->linker); 982 acpi_add_table(table_offsets, tables_blob); 983 acpi_build_hest(tables_blob, tables->linker, vms->oem_id, 984 vms->oem_table_id); 985 } 986 987 if (ms->numa_state->num_nodes > 0) { 988 acpi_add_table(table_offsets, tables_blob); 989 build_srat(tables_blob, tables->linker, vms); 990 if (ms->numa_state->have_numa_distance) { 991 acpi_add_table(table_offsets, tables_blob); 992 build_slit(tables_blob, tables->linker, ms, vms->oem_id, 993 vms->oem_table_id); 994 } 995 } 996 997 if (ms->nvdimms_state->is_enabled) { 998 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 999 ms->nvdimms_state, ms->ram_slots, vms->oem_id, 1000 vms->oem_table_id); 1001 } 1002 1003 if (its_class_name() && !vmc->no_its) { 1004 acpi_add_table(table_offsets, tables_blob); 1005 build_iort(tables_blob, tables->linker, vms); 1006 } 1007 1008 #ifdef CONFIG_TPM 1009 if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) { 1010 acpi_add_table(table_offsets, tables_blob); 1011 build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id, 1012 vms->oem_table_id); 1013 } 1014 #endif 1015 1016 if (vms->iommu == VIRT_IOMMU_VIRTIO) { 1017 acpi_add_table(table_offsets, tables_blob); 1018 build_viot(ms, tables_blob, tables->linker, vms->virtio_iommu_bdf, 1019 vms->oem_id, vms->oem_table_id); 1020 } 1021 1022 /* XSDT is pointed to by RSDP */ 1023 xsdt = tables_blob->len; 1024 build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id, 1025 vms->oem_table_id); 1026 1027 /* RSDP is in FSEG memory, so allocate it separately */ 1028 { 1029 AcpiRsdpData rsdp_data = { 1030 .revision = 2, 1031 .oem_id = vms->oem_id, 1032 .xsdt_tbl_offset = &xsdt, 1033 .rsdt_tbl_offset = NULL, 1034 }; 1035 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 1036 } 1037 1038 /* 1039 * The align size is 128, warn if 64k is not enough therefore 1040 * the align size could be resized. 1041 */ 1042 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 1043 warn_report("ACPI table size %u exceeds %d bytes," 1044 " migration may not work", 1045 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 1046 error_printf("Try removing CPUs, NUMA nodes, memory slots" 1047 " or PCI bridges."); 1048 } 1049 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 1050 1051 1052 /* Cleanup memory that's no longer used. */ 1053 g_array_free(table_offsets, true); 1054 } 1055 1056 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 1057 { 1058 uint32_t size = acpi_data_len(data); 1059 1060 /* Make sure RAM size is correct - in case it got changed 1061 * e.g. by migration */ 1062 memory_region_ram_resize(mr, size, &error_abort); 1063 1064 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 1065 memory_region_set_dirty(mr, 0, size); 1066 } 1067 1068 static void virt_acpi_build_update(void *build_opaque) 1069 { 1070 AcpiBuildState *build_state = build_opaque; 1071 AcpiBuildTables tables; 1072 1073 /* No state to update or already patched? Nothing to do. */ 1074 if (!build_state || build_state->patched) { 1075 return; 1076 } 1077 build_state->patched = true; 1078 1079 acpi_build_tables_init(&tables); 1080 1081 virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables); 1082 1083 acpi_ram_update(build_state->table_mr, tables.table_data); 1084 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 1085 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 1086 1087 acpi_build_tables_cleanup(&tables, true); 1088 } 1089 1090 static void virt_acpi_build_reset(void *build_opaque) 1091 { 1092 AcpiBuildState *build_state = build_opaque; 1093 build_state->patched = false; 1094 } 1095 1096 static const VMStateDescription vmstate_virt_acpi_build = { 1097 .name = "virt_acpi_build", 1098 .version_id = 1, 1099 .minimum_version_id = 1, 1100 .fields = (VMStateField[]) { 1101 VMSTATE_BOOL(patched, AcpiBuildState), 1102 VMSTATE_END_OF_LIST() 1103 }, 1104 }; 1105 1106 void virt_acpi_setup(VirtMachineState *vms) 1107 { 1108 AcpiBuildTables tables; 1109 AcpiBuildState *build_state; 1110 AcpiGedState *acpi_ged_state; 1111 1112 if (!vms->fw_cfg) { 1113 trace_virt_acpi_setup(); 1114 return; 1115 } 1116 1117 if (!virt_is_acpi_enabled(vms)) { 1118 trace_virt_acpi_setup(); 1119 return; 1120 } 1121 1122 build_state = g_malloc0(sizeof *build_state); 1123 1124 acpi_build_tables_init(&tables); 1125 virt_acpi_build(vms, &tables); 1126 1127 /* Now expose it all to Guest */ 1128 build_state->table_mr = acpi_add_rom_blob(virt_acpi_build_update, 1129 build_state, tables.table_data, 1130 ACPI_BUILD_TABLE_FILE); 1131 assert(build_state->table_mr != NULL); 1132 1133 build_state->linker_mr = acpi_add_rom_blob(virt_acpi_build_update, 1134 build_state, 1135 tables.linker->cmd_blob, 1136 ACPI_BUILD_LOADER_FILE); 1137 1138 fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, 1139 acpi_data_len(tables.tcpalog)); 1140 1141 if (vms->ras) { 1142 assert(vms->acpi_dev); 1143 acpi_ged_state = ACPI_GED(vms->acpi_dev); 1144 acpi_ghes_add_fw_cfg(&acpi_ged_state->ghes_state, 1145 vms->fw_cfg, tables.hardware_errors); 1146 } 1147 1148 build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update, 1149 build_state, tables.rsdp, 1150 ACPI_BUILD_RSDP_FILE); 1151 1152 qemu_register_reset(virt_acpi_build_reset, build_state); 1153 virt_acpi_build_reset(build_state); 1154 vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state); 1155 1156 /* Cleanup tables but don't free the memory: we track it 1157 * in build_state. 1158 */ 1159 acpi_build_tables_cleanup(&tables, false); 1160 } 1161