1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Support for generating ACPI tables and passing them to Guests 4 * 5 * Copyright (C) 2021 Loongson Technology Corporation Limited 6 */ 7 8 #include "qemu/osdep.h" 9 #include "qapi/error.h" 10 #include "qemu/error-report.h" 11 #include "qemu/bitmap.h" 12 #include "hw/pci/pci.h" 13 #include "hw/core/cpu.h" 14 #include "target/loongarch/cpu.h" 15 #include "hw/acpi/acpi-defs.h" 16 #include "hw/acpi/acpi.h" 17 #include "hw/nvram/fw_cfg.h" 18 #include "hw/acpi/bios-linker-loader.h" 19 #include "migration/vmstate.h" 20 #include "hw/mem/memory-device.h" 21 #include "sysemu/reset.h" 22 23 /* Supported chipsets: */ 24 #include "hw/pci-host/ls7a.h" 25 #include "hw/loongarch/virt.h" 26 27 #include "hw/acpi/utils.h" 28 #include "hw/acpi/pci.h" 29 30 #include "qom/qom-qobject.h" 31 32 #include "hw/acpi/generic_event_device.h" 33 #include "hw/pci-host/gpex.h" 34 #include "sysemu/tpm.h" 35 #include "hw/platform-bus.h" 36 #include "hw/acpi/aml-build.h" 37 #include "hw/acpi/hmat.h" 38 39 #define ACPI_BUILD_ALIGN_SIZE 0x1000 40 #define ACPI_BUILD_TABLE_SIZE 0x20000 41 42 #ifdef DEBUG_ACPI_BUILD 43 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 44 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 45 #else 46 #define ACPI_BUILD_DPRINTF(fmt, ...) 47 #endif 48 49 /* build FADT */ 50 static void init_common_fadt_data(AcpiFadtData *data) 51 { 52 AcpiFadtData fadt = { 53 /* ACPI 5.0: 4.1 Hardware-Reduced ACPI */ 54 .rev = 5, 55 .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) | 56 (1 << ACPI_FADT_F_RESET_REG_SUP)), 57 58 /* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */ 59 .sleep_ctl = { 60 .space_id = AML_AS_SYSTEM_MEMORY, 61 .bit_width = 8, 62 .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_SLEEP_CTL, 63 }, 64 .sleep_sts = { 65 .space_id = AML_AS_SYSTEM_MEMORY, 66 .bit_width = 8, 67 .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_SLEEP_STS, 68 }, 69 70 /* ACPI 5.0: 4.8.3.6 Reset Register */ 71 .reset_reg = { 72 .space_id = AML_AS_SYSTEM_MEMORY, 73 .bit_width = 8, 74 .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_RESET, 75 }, 76 .reset_val = ACPI_GED_RESET_VALUE, 77 }; 78 *data = fadt; 79 } 80 81 static void acpi_align_size(GArray *blob, unsigned align) 82 { 83 /* 84 * Align size to multiple of given size. This reduces the chance 85 * we need to change size in the future (breaking cross version migration). 86 */ 87 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 88 } 89 90 /* build FACS */ 91 static void 92 build_facs(GArray *table_data) 93 { 94 const char *sig = "FACS"; 95 const uint8_t reserved[40] = {}; 96 97 g_array_append_vals(table_data, sig, 4); /* Signature */ 98 build_append_int_noprefix(table_data, 64, 4); /* Length */ 99 build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */ 100 build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */ 101 build_append_int_noprefix(table_data, 0, 4); /* Global Lock */ 102 build_append_int_noprefix(table_data, 0, 4); /* Flags */ 103 g_array_append_vals(table_data, reserved, 40); /* Reserved */ 104 } 105 106 /* build MADT */ 107 static void 108 build_madt(GArray *table_data, BIOSLinker *linker, LoongArchMachineState *lams) 109 { 110 MachineState *ms = MACHINE(lams); 111 MachineClass *mc = MACHINE_GET_CLASS(ms); 112 const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(ms); 113 int i, arch_id; 114 AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = lams->oem_id, 115 .oem_table_id = lams->oem_table_id }; 116 117 acpi_table_begin(&table, table_data); 118 119 /* Local APIC Address */ 120 build_append_int_noprefix(table_data, 0, 4); 121 build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */ 122 123 for (i = 0; i < arch_ids->len; i++) { 124 /* Processor Core Interrupt Controller Structure */ 125 arch_id = arch_ids->cpus[i].arch_id; 126 127 build_append_int_noprefix(table_data, 17, 1); /* Type */ 128 build_append_int_noprefix(table_data, 15, 1); /* Length */ 129 build_append_int_noprefix(table_data, 1, 1); /* Version */ 130 build_append_int_noprefix(table_data, i, 4); /* ACPI Processor ID */ 131 build_append_int_noprefix(table_data, arch_id, 4); /* Core ID */ 132 build_append_int_noprefix(table_data, 1, 4); /* Flags */ 133 } 134 135 /* Extend I/O Interrupt Controller Structure */ 136 build_append_int_noprefix(table_data, 20, 1); /* Type */ 137 build_append_int_noprefix(table_data, 13, 1); /* Length */ 138 build_append_int_noprefix(table_data, 1, 1); /* Version */ 139 build_append_int_noprefix(table_data, 3, 1); /* Cascade */ 140 build_append_int_noprefix(table_data, 0, 1); /* Node */ 141 build_append_int_noprefix(table_data, 0xffff, 8); /* Node map */ 142 143 /* MSI Interrupt Controller Structure */ 144 build_append_int_noprefix(table_data, 21, 1); /* Type */ 145 build_append_int_noprefix(table_data, 19, 1); /* Length */ 146 build_append_int_noprefix(table_data, 1, 1); /* Version */ 147 build_append_int_noprefix(table_data, VIRT_PCH_MSI_ADDR_LOW, 8);/* Address */ 148 build_append_int_noprefix(table_data, 0x40, 4); /* Start */ 149 build_append_int_noprefix(table_data, 0xc0, 4); /* Count */ 150 151 /* Bridge I/O Interrupt Controller Structure */ 152 build_append_int_noprefix(table_data, 22, 1); /* Type */ 153 build_append_int_noprefix(table_data, 17, 1); /* Length */ 154 build_append_int_noprefix(table_data, 1, 1); /* Version */ 155 build_append_int_noprefix(table_data, VIRT_PCH_REG_BASE, 8);/* Address */ 156 build_append_int_noprefix(table_data, 0x1000, 2); /* Size */ 157 build_append_int_noprefix(table_data, 0, 2); /* Id */ 158 build_append_int_noprefix(table_data, 0x40, 2); /* Base */ 159 160 acpi_table_end(linker, &table); 161 } 162 163 /* build SRAT */ 164 static void 165 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) 166 { 167 int i, arch_id, node_id; 168 uint64_t mem_len, mem_base; 169 int nb_numa_nodes = machine->numa_state->num_nodes; 170 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 171 MachineClass *mc = MACHINE_GET_CLASS(lams); 172 const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine); 173 AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = lams->oem_id, 174 .oem_table_id = lams->oem_table_id }; 175 176 acpi_table_begin(&table, table_data); 177 build_append_int_noprefix(table_data, 1, 4); /* Reserved */ 178 build_append_int_noprefix(table_data, 0, 8); /* Reserved */ 179 180 for (i = 0; i < arch_ids->len; ++i) { 181 arch_id = arch_ids->cpus[i].arch_id; 182 node_id = arch_ids->cpus[i].props.node_id; 183 184 /* Processor Local APIC/SAPIC Affinity Structure */ 185 build_append_int_noprefix(table_data, 0, 1); /* Type */ 186 build_append_int_noprefix(table_data, 16, 1); /* Length */ 187 /* Proximity Domain [7:0] */ 188 build_append_int_noprefix(table_data, node_id, 1); 189 build_append_int_noprefix(table_data, arch_id, 1); /* APIC ID */ 190 /* Flags, Table 5-36 */ 191 build_append_int_noprefix(table_data, 1, 4); 192 build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */ 193 /* Proximity Domain [31:8] */ 194 build_append_int_noprefix(table_data, 0, 3); 195 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 196 } 197 198 /* Node0 */ 199 build_srat_memory(table_data, VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, 200 0, MEM_AFFINITY_ENABLED); 201 mem_base = VIRT_HIGHMEM_BASE; 202 if (!nb_numa_nodes) { 203 mem_len = machine->ram_size - VIRT_LOWMEM_SIZE; 204 } else { 205 mem_len = machine->numa_state->nodes[0].node_mem - VIRT_LOWMEM_SIZE; 206 } 207 if (mem_len) 208 build_srat_memory(table_data, mem_base, mem_len, 0, MEM_AFFINITY_ENABLED); 209 210 /* Node1 - Nodemax */ 211 if (nb_numa_nodes) { 212 mem_base += mem_len; 213 for (i = 1; i < nb_numa_nodes; ++i) { 214 if (machine->numa_state->nodes[i].node_mem > 0) { 215 build_srat_memory(table_data, mem_base, 216 machine->numa_state->nodes[i].node_mem, i, 217 MEM_AFFINITY_ENABLED); 218 mem_base += machine->numa_state->nodes[i].node_mem; 219 } 220 } 221 } 222 223 if (machine->device_memory) { 224 build_srat_memory(table_data, machine->device_memory->base, 225 memory_region_size(&machine->device_memory->mr), 226 nb_numa_nodes - 1, 227 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 228 } 229 230 acpi_table_end(linker, &table); 231 } 232 233 typedef 234 struct AcpiBuildState { 235 /* Copy of table in RAM (for patching). */ 236 MemoryRegion *table_mr; 237 /* Is table patched? */ 238 uint8_t patched; 239 void *rsdp; 240 MemoryRegion *rsdp_mr; 241 MemoryRegion *linker_mr; 242 } AcpiBuildState; 243 244 static void build_uart_device_aml(Aml *table) 245 { 246 Aml *dev; 247 Aml *crs; 248 Aml *pkg0, *pkg1, *pkg2; 249 uint32_t uart_irq = VIRT_UART_IRQ; 250 251 Aml *scope = aml_scope("_SB"); 252 dev = aml_device("COMA"); 253 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0501"))); 254 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 255 aml_append(dev, aml_name_decl("_CCA", aml_int(1))); 256 crs = aml_resource_template(); 257 aml_append(crs, 258 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 259 AML_NON_CACHEABLE, AML_READ_WRITE, 260 0, VIRT_UART_BASE, VIRT_UART_BASE + VIRT_UART_SIZE - 1, 261 0, VIRT_UART_SIZE)); 262 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 263 AML_SHARED, &uart_irq, 1)); 264 aml_append(dev, aml_name_decl("_CRS", crs)); 265 pkg0 = aml_package(0x2); 266 aml_append(pkg0, aml_int(0x05F5E100)); 267 aml_append(pkg0, aml_string("clock-frenquency")); 268 pkg1 = aml_package(0x1); 269 aml_append(pkg1, pkg0); 270 pkg2 = aml_package(0x2); 271 aml_append(pkg2, aml_touuid("DAFFD814-6EBA-4D8C-8A91-BC9BBF4AA301")); 272 aml_append(pkg2, pkg1); 273 aml_append(dev, aml_name_decl("_DSD", pkg2)); 274 aml_append(scope, dev); 275 aml_append(table, scope); 276 } 277 278 static void 279 build_la_ged_aml(Aml *dsdt, MachineState *machine) 280 { 281 uint32_t event; 282 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 283 284 build_ged_aml(dsdt, "\\_SB."GED_DEVICE, 285 HOTPLUG_HANDLER(lams->acpi_ged), 286 VIRT_SCI_IRQ, AML_SYSTEM_MEMORY, 287 VIRT_GED_EVT_ADDR); 288 event = object_property_get_uint(OBJECT(lams->acpi_ged), 289 "ged-event", &error_abort); 290 if (event & ACPI_GED_MEM_HOTPLUG_EVT) { 291 build_memory_hotplug_aml(dsdt, machine->ram_slots, "\\_SB", NULL, 292 AML_SYSTEM_MEMORY, 293 VIRT_GED_MEM_ADDR); 294 } 295 acpi_dsdt_add_power_button(dsdt); 296 } 297 298 static void build_pci_device_aml(Aml *scope, LoongArchMachineState *lams) 299 { 300 struct GPEXConfig cfg = { 301 .mmio64.base = VIRT_PCI_MEM_BASE, 302 .mmio64.size = VIRT_PCI_MEM_SIZE, 303 .pio.base = VIRT_PCI_IO_BASE, 304 .pio.size = VIRT_PCI_IO_SIZE, 305 .ecam.base = VIRT_PCI_CFG_BASE, 306 .ecam.size = VIRT_PCI_CFG_SIZE, 307 .irq = VIRT_GSI_BASE + VIRT_DEVICE_IRQS, 308 .bus = lams->pci_bus, 309 }; 310 311 acpi_dsdt_add_gpex(scope, &cfg); 312 } 313 314 static void build_flash_aml(Aml *scope, LoongArchMachineState *lams) 315 { 316 Aml *dev, *crs; 317 MemoryRegion *flash_mem; 318 319 hwaddr flash0_base; 320 hwaddr flash0_size; 321 322 hwaddr flash1_base; 323 hwaddr flash1_size; 324 325 flash_mem = pflash_cfi01_get_memory(lams->flash[0]); 326 flash0_base = flash_mem->addr; 327 flash0_size = memory_region_size(flash_mem); 328 329 flash_mem = pflash_cfi01_get_memory(lams->flash[1]); 330 flash1_base = flash_mem->addr; 331 flash1_size = memory_region_size(flash_mem); 332 333 dev = aml_device("FLS0"); 334 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); 335 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 336 337 crs = aml_resource_template(); 338 aml_append(crs, aml_memory32_fixed(flash0_base, flash0_size, 339 AML_READ_WRITE)); 340 aml_append(dev, aml_name_decl("_CRS", crs)); 341 aml_append(scope, dev); 342 343 dev = aml_device("FLS1"); 344 aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); 345 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 346 347 crs = aml_resource_template(); 348 aml_append(crs, aml_memory32_fixed(flash1_base, flash1_size, 349 AML_READ_WRITE)); 350 aml_append(dev, aml_name_decl("_CRS", crs)); 351 aml_append(scope, dev); 352 } 353 354 #ifdef CONFIG_TPM 355 static void acpi_dsdt_add_tpm(Aml *scope, LoongArchMachineState *vms) 356 { 357 PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); 358 hwaddr pbus_base = VIRT_PLATFORM_BUS_BASEADDRESS; 359 SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find()); 360 MemoryRegion *sbdev_mr; 361 hwaddr tpm_base; 362 363 if (!sbdev) { 364 return; 365 } 366 367 tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0); 368 assert(tpm_base != -1); 369 370 tpm_base += pbus_base; 371 372 sbdev_mr = sysbus_mmio_get_region(sbdev, 0); 373 374 Aml *dev = aml_device("TPM0"); 375 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 376 aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); 377 aml_append(dev, aml_name_decl("_UID", aml_int(0))); 378 379 Aml *crs = aml_resource_template(); 380 aml_append(crs, 381 aml_memory32_fixed(tpm_base, 382 (uint32_t)memory_region_size(sbdev_mr), 383 AML_READ_WRITE)); 384 aml_append(dev, aml_name_decl("_CRS", crs)); 385 aml_append(scope, dev); 386 } 387 #endif 388 389 /* build DSDT */ 390 static void 391 build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) 392 { 393 Aml *dsdt, *scope, *pkg; 394 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 395 AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = lams->oem_id, 396 .oem_table_id = lams->oem_table_id }; 397 398 acpi_table_begin(&table, table_data); 399 dsdt = init_aml_allocator(); 400 build_uart_device_aml(dsdt); 401 build_pci_device_aml(dsdt, lams); 402 build_la_ged_aml(dsdt, machine); 403 build_flash_aml(dsdt, lams); 404 #ifdef CONFIG_TPM 405 acpi_dsdt_add_tpm(dsdt, lams); 406 #endif 407 /* System State Package */ 408 scope = aml_scope("\\"); 409 pkg = aml_package(4); 410 aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5)); 411 aml_append(pkg, aml_int(0)); /* ignored */ 412 aml_append(pkg, aml_int(0)); /* reserved */ 413 aml_append(pkg, aml_int(0)); /* reserved */ 414 aml_append(scope, aml_name_decl("_S5", pkg)); 415 aml_append(dsdt, scope); 416 /* Copy AML table into ACPI tables blob and patch header there */ 417 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 418 acpi_table_end(linker, &table); 419 free_aml_allocator(); 420 } 421 422 static void acpi_build(AcpiBuildTables *tables, MachineState *machine) 423 { 424 LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); 425 GArray *table_offsets; 426 AcpiFadtData fadt_data; 427 unsigned facs, rsdt, dsdt; 428 uint8_t *u; 429 GArray *tables_blob = tables->table_data; 430 431 init_common_fadt_data(&fadt_data); 432 433 table_offsets = g_array_new(false, true, sizeof(uint32_t)); 434 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 435 436 bios_linker_loader_alloc(tables->linker, 437 ACPI_BUILD_TABLE_FILE, tables_blob, 438 64, false); 439 440 /* 441 * FACS is pointed to by FADT. 442 * We place it first since it's the only table that has alignment 443 * requirements. 444 */ 445 facs = tables_blob->len; 446 build_facs(tables_blob); 447 448 /* DSDT is pointed to by FADT */ 449 dsdt = tables_blob->len; 450 build_dsdt(tables_blob, tables->linker, machine); 451 452 /* ACPI tables pointed to by RSDT */ 453 acpi_add_table(table_offsets, tables_blob); 454 fadt_data.facs_tbl_offset = &facs; 455 fadt_data.dsdt_tbl_offset = &dsdt; 456 fadt_data.xdsdt_tbl_offset = &dsdt; 457 build_fadt(tables_blob, tables->linker, &fadt_data, 458 lams->oem_id, lams->oem_table_id); 459 460 acpi_add_table(table_offsets, tables_blob); 461 build_madt(tables_blob, tables->linker, lams); 462 463 acpi_add_table(table_offsets, tables_blob); 464 build_pptt(tables_blob, tables->linker, machine, 465 lams->oem_id, lams->oem_table_id); 466 467 acpi_add_table(table_offsets, tables_blob); 468 build_srat(tables_blob, tables->linker, machine); 469 470 if (machine->numa_state->num_nodes) { 471 if (machine->numa_state->have_numa_distance) { 472 acpi_add_table(table_offsets, tables_blob); 473 build_slit(tables_blob, tables->linker, machine, lams->oem_id, 474 lams->oem_table_id); 475 } 476 if (machine->numa_state->hmat_enabled) { 477 acpi_add_table(table_offsets, tables_blob); 478 build_hmat(tables_blob, tables->linker, machine->numa_state, 479 lams->oem_id, lams->oem_table_id); 480 } 481 } 482 483 acpi_add_table(table_offsets, tables_blob); 484 { 485 AcpiMcfgInfo mcfg = { 486 .base = cpu_to_le64(VIRT_PCI_CFG_BASE), 487 .size = cpu_to_le64(VIRT_PCI_CFG_SIZE), 488 }; 489 build_mcfg(tables_blob, tables->linker, &mcfg, lams->oem_id, 490 lams->oem_table_id); 491 } 492 493 #ifdef CONFIG_TPM 494 /* TPM info */ 495 if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) { 496 acpi_add_table(table_offsets, tables_blob); 497 build_tpm2(tables_blob, tables->linker, 498 tables->tcpalog, lams->oem_id, 499 lams->oem_table_id); 500 } 501 #endif 502 /* Add tables supplied by user (if any) */ 503 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 504 unsigned len = acpi_table_len(u); 505 506 acpi_add_table(table_offsets, tables_blob); 507 g_array_append_vals(tables_blob, u, len); 508 } 509 510 /* RSDT is pointed to by RSDP */ 511 rsdt = tables_blob->len; 512 build_rsdt(tables_blob, tables->linker, table_offsets, 513 lams->oem_id, lams->oem_table_id); 514 515 /* RSDP is in FSEG memory, so allocate it separately */ 516 { 517 AcpiRsdpData rsdp_data = { 518 .revision = 0, 519 .oem_id = lams->oem_id, 520 .xsdt_tbl_offset = NULL, 521 .rsdt_tbl_offset = &rsdt, 522 }; 523 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 524 } 525 526 /* 527 * The align size is 128, warn if 64k is not enough therefore 528 * the align size could be resized. 529 */ 530 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 531 warn_report("ACPI table size %u exceeds %d bytes," 532 " migration may not work", 533 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 534 error_printf("Try removing CPUs, NUMA nodes, memory slots" 535 " or PCI bridges.\n"); 536 } 537 538 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); 539 540 /* Cleanup memory that's no longer used. */ 541 g_array_free(table_offsets, true); 542 } 543 544 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 545 { 546 uint32_t size = acpi_data_len(data); 547 548 /* 549 * Make sure RAM size is correct - in case it got changed 550 * e.g. by migration 551 */ 552 memory_region_ram_resize(mr, size, &error_abort); 553 554 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 555 memory_region_set_dirty(mr, 0, size); 556 } 557 558 static void acpi_build_update(void *build_opaque) 559 { 560 AcpiBuildState *build_state = build_opaque; 561 AcpiBuildTables tables; 562 563 /* No state to update or already patched? Nothing to do. */ 564 if (!build_state || build_state->patched) { 565 return; 566 } 567 build_state->patched = 1; 568 569 acpi_build_tables_init(&tables); 570 571 acpi_build(&tables, MACHINE(qdev_get_machine())); 572 573 acpi_ram_update(build_state->table_mr, tables.table_data); 574 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 575 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 576 577 acpi_build_tables_cleanup(&tables, true); 578 } 579 580 static void acpi_build_reset(void *build_opaque) 581 { 582 AcpiBuildState *build_state = build_opaque; 583 build_state->patched = 0; 584 } 585 586 static const VMStateDescription vmstate_acpi_build = { 587 .name = "acpi_build", 588 .version_id = 1, 589 .minimum_version_id = 1, 590 .fields = (const VMStateField[]) { 591 VMSTATE_UINT8(patched, AcpiBuildState), 592 VMSTATE_END_OF_LIST() 593 }, 594 }; 595 596 void loongarch_acpi_setup(LoongArchMachineState *lams) 597 { 598 AcpiBuildTables tables; 599 AcpiBuildState *build_state; 600 601 if (!lams->fw_cfg) { 602 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 603 return; 604 } 605 606 if (!loongarch_is_acpi_enabled(lams)) { 607 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 608 return; 609 } 610 611 build_state = g_malloc0(sizeof *build_state); 612 613 acpi_build_tables_init(&tables); 614 acpi_build(&tables, MACHINE(lams)); 615 616 /* Now expose it all to Guest */ 617 build_state->table_mr = acpi_add_rom_blob(acpi_build_update, 618 build_state, tables.table_data, 619 ACPI_BUILD_TABLE_FILE); 620 assert(build_state->table_mr != NULL); 621 622 build_state->linker_mr = 623 acpi_add_rom_blob(acpi_build_update, build_state, 624 tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); 625 626 build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, 627 build_state, tables.rsdp, 628 ACPI_BUILD_RSDP_FILE); 629 630 qemu_register_reset(acpi_build_reset, build_state); 631 acpi_build_reset(build_state); 632 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 633 634 /* 635 * Cleanup tables but don't free the memory: we track it 636 * in build_state. 637 */ 638 acpi_build_tables_cleanup(&tables, false); 639 } 640