/* Support for generating ACPI tables and passing them to Guests * * ARM virt ACPI generation * * Copyright (C) 2008-2010 Kevin O'Connor * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2013 Red Hat Inc * * Author: Michael S. Tsirkin * * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD. * * Author: Shannon Zhao * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License along * with this program; if not, see . */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/bitmap.h" #include "qemu/error-report.h" #include "trace.h" #include "hw/core/cpu.h" #include "hw/acpi/acpi-defs.h" #include "hw/acpi/acpi.h" #include "hw/nvram/fw_cfg_acpi.h" #include "hw/acpi/bios-linker-loader.h" #include "hw/acpi/aml-build.h" #include "hw/acpi/utils.h" #include "hw/acpi/pci.h" #include "hw/acpi/memory_hotplug.h" #include "hw/acpi/generic_event_device.h" #include "hw/acpi/tpm.h" #include "hw/acpi/hmat.h" #include "hw/pci/pcie_host.h" #include "hw/pci/pci.h" #include "hw/pci/pci_bus.h" #include "hw/pci-host/gpex.h" #include "hw/arm/virt.h" #include "hw/intc/arm_gicv3_its_common.h" #include "hw/mem/nvdimm.h" #include "hw/platform-bus.h" #include "sysemu/numa.h" #include "sysemu/reset.h" #include "sysemu/tpm.h" #include "migration/vmstate.h" #include "hw/acpi/ghes.h" #include "hw/acpi/viot.h" #include "hw/virtio/virtio-acpi.h" #include "target/arm/multiprocessing.h" #define ARM_SPI_BASE 32 #define ACPI_BUILD_TABLE_SIZE 0x20000 static void acpi_dsdt_add_cpus(Aml *scope, VirtMachineState *vms) { MachineState *ms = MACHINE(vms); uint16_t i; for (i = 0; i < ms->smp.cpus; i++) { Aml *dev = aml_device("C%.03X", i); aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007"))); aml_append(dev, aml_name_decl("_UID", aml_int(i))); aml_append(scope, dev); } } static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap, uint32_t uart_irq) { Aml *dev = aml_device("COM0"); aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(uart_memmap->base, uart_memmap->size, AML_READ_WRITE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, &uart_irq, 1)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap) { Aml *dev, *crs; hwaddr base = flash_memmap->base; hwaddr size = flash_memmap->size / 2; dev = aml_device("FLS0"); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); dev = aml_device("FLS1"); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); aml_append(dev, aml_name_decl("_UID", aml_int(1))); crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, uint32_t irq, VirtMachineState *vms) { int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam); struct GPEXConfig cfg = { .mmio32 = memmap[VIRT_PCIE_MMIO], .pio = memmap[VIRT_PCIE_PIO], .ecam = memmap[ecam_id], .irq = irq, .bus = vms->bus, }; if (vms->highmem_mmio) { cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO]; } acpi_dsdt_add_gpex(scope, &cfg); } static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap, uint32_t gpio_irq) { Aml *dev = aml_device("GPO0"); aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size, AML_READ_WRITE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, &gpio_irq, 1)); aml_append(dev, aml_name_decl("_CRS", crs)); Aml *aei = aml_resource_template(); /* Pin 3 for power button */ const uint32_t pin_list[1] = {3}; aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1, "GPO0", NULL, 0)); aml_append(dev, aml_name_decl("_AEI", aei)); /* _E03 is handle for power button */ Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED); aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE), aml_int(0x80))); aml_append(dev, method); aml_append(scope, dev); } #ifdef CONFIG_TPM static void acpi_dsdt_add_tpm(Aml *scope, VirtMachineState *vms) { PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base; SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find()); MemoryRegion *sbdev_mr; hwaddr tpm_base; if (!sbdev) { return; } tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0); assert(tpm_base != -1); tpm_base += pbus_base; sbdev_mr = sysbus_mmio_get_region(sbdev, 0); Aml *dev = aml_device("TPM0"); aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(tpm_base, (uint32_t)memory_region_size(sbdev_mr), AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } #endif #define ID_MAPPING_ENTRY_SIZE 20 #define SMMU_V3_ENTRY_SIZE 68 #define ROOT_COMPLEX_ENTRY_SIZE 36 #define IORT_NODE_OFFSET 48 static void build_iort_id_mapping(GArray *table_data, uint32_t input_base, uint32_t id_count, uint32_t out_ref) { /* Table 4 ID mapping format */ build_append_int_noprefix(table_data, input_base, 4); /* Input base */ build_append_int_noprefix(table_data, id_count, 4); /* Number of IDs */ build_append_int_noprefix(table_data, input_base, 4); /* Output base */ build_append_int_noprefix(table_data, out_ref, 4); /* Output Reference */ /* Flags */ build_append_int_noprefix(table_data, 0 /* Single mapping (disabled) */, 4); } struct AcpiIortIdMapping { uint32_t input_base; uint32_t id_count; }; typedef struct AcpiIortIdMapping AcpiIortIdMapping; /* Build the iort ID mapping to SMMUv3 for a given PCI host bridge */ static int iort_host_bridges(Object *obj, void *opaque) { GArray *idmap_blob = opaque; if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; if (bus && !pci_bus_bypass_iommu(bus)) { int min_bus, max_bus; pci_bus_range(bus, &min_bus, &max_bus); AcpiIortIdMapping idmap = { .input_base = min_bus << 8, .id_count = (max_bus - min_bus + 1) << 8, }; g_array_append_val(idmap_blob, idmap); } } return 0; } static int iort_idmap_compare(gconstpointer a, gconstpointer b) { AcpiIortIdMapping *idmap_a = (AcpiIortIdMapping *)a; AcpiIortIdMapping *idmap_b = (AcpiIortIdMapping *)b; return idmap_a->input_base - idmap_b->input_base; } /* * Input Output Remapping Table (IORT) * Conforms to "IO Remapping Table System Software on ARM Platforms", * Document number: ARM DEN 0049E.b, Feb 2021 */ static void build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { int i, nb_nodes, rc_mapping_count; const uint32_t iort_node_offset = IORT_NODE_OFFSET; size_t node_size, smmu_offset = 0; AcpiIortIdMapping *idmap; uint32_t id = 0; GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping)); AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; /* Table 2 The IORT */ acpi_table_begin(&table, table_data); if (vms->iommu == VIRT_IOMMU_SMMUV3) { AcpiIortIdMapping next_range = {0}; object_child_foreach_recursive(object_get_root(), iort_host_bridges, smmu_idmaps); /* Sort the smmu idmap by input_base */ g_array_sort(smmu_idmaps, iort_idmap_compare); /* * Split the whole RIDs by mapping from RC to SMMU, * build the ID mapping from RC to ITS directly. */ for (i = 0; i < smmu_idmaps->len; i++) { idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); if (next_range.input_base < idmap->input_base) { next_range.id_count = idmap->input_base - next_range.input_base; g_array_append_val(its_idmaps, next_range); } next_range.input_base = idmap->input_base + idmap->id_count; } /* Append the last RC -> ITS ID mapping */ if (next_range.input_base < 0xFFFF) { next_range.id_count = 0xFFFF - next_range.input_base; g_array_append_val(its_idmaps, next_range); } nb_nodes = 3; /* RC, ITS, SMMUv3 */ rc_mapping_count = smmu_idmaps->len + its_idmaps->len; } else { nb_nodes = 2; /* RC, ITS */ rc_mapping_count = 1; } /* Number of IORT Nodes */ build_append_int_noprefix(table_data, nb_nodes, 4); /* Offset to Array of IORT Nodes */ build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ /* Table 12 ITS Group Format */ build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */ node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */; build_append_int_noprefix(table_data, node_size, 2); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Revision */ build_append_int_noprefix(table_data, id++, 4); /* Identifier */ build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */ build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */ build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */ /* GIC ITS Identifier Array */ build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4); if (vms->iommu == VIRT_IOMMU_SMMUV3) { int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE; smmu_offset = table_data->len - table.table_offset; /* Table 9 SMMUv3 Format */ build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */ node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE; build_append_int_noprefix(table_data, node_size, 2); /* Length */ build_append_int_noprefix(table_data, 4, 1); /* Revision */ build_append_int_noprefix(table_data, id++, 4); /* Identifier */ build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */ /* Reference to ID Array */ build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4); /* Base address */ build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8); /* Flags */ build_append_int_noprefix(table_data, 1 /* COHACC Override */, 4); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ build_append_int_noprefix(table_data, 0, 8); /* VATOS address */ /* Model */ build_append_int_noprefix(table_data, 0 /* Generic SMMU-v3 */, 4); build_append_int_noprefix(table_data, irq, 4); /* Event */ build_append_int_noprefix(table_data, irq + 1, 4); /* PRI */ build_append_int_noprefix(table_data, irq + 3, 4); /* GERR */ build_append_int_noprefix(table_data, irq + 2, 4); /* Sync */ build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */ /* DeviceID mapping index (ignored since interrupts are GSIV based) */ build_append_int_noprefix(table_data, 0, 4); /* output IORT node is the ITS group node (the first node) */ build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); } /* Table 17 Root Complex Node */ build_append_int_noprefix(table_data, 2 /* Root complex */, 1); /* Type */ node_size = ROOT_COMPLEX_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE * rc_mapping_count; build_append_int_noprefix(table_data, node_size, 2); /* Length */ build_append_int_noprefix(table_data, 3, 1); /* Revision */ build_append_int_noprefix(table_data, id++, 4); /* Identifier */ /* Number of ID mappings */ build_append_int_noprefix(table_data, rc_mapping_count, 4); /* Reference to ID Array */ build_append_int_noprefix(table_data, ROOT_COMPLEX_ENTRY_SIZE, 4); /* Table 14 Memory access properties */ /* CCA: Cache Coherent Attribute */ build_append_int_noprefix(table_data, 1 /* fully coherent */, 4); build_append_int_noprefix(table_data, 0, 1); /* AH: Note Allocation Hints */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ /* Table 15 Memory Access Flags */ build_append_int_noprefix(table_data, 0x3 /* CCA = CPM = DACS = 1 */, 1); build_append_int_noprefix(table_data, 0, 4); /* ATS Attribute */ /* MCFG pci_segment */ build_append_int_noprefix(table_data, 0, 4); /* PCI Segment number */ /* Memory address size limit */ build_append_int_noprefix(table_data, 64, 1); build_append_int_noprefix(table_data, 0, 3); /* Reserved */ /* Output Reference */ if (vms->iommu == VIRT_IOMMU_SMMUV3) { AcpiIortIdMapping *range; /* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */ for (i = 0; i < smmu_idmaps->len; i++) { range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i); /* output IORT node is the smmuv3 node */ build_iort_id_mapping(table_data, range->input_base, range->id_count, smmu_offset); } /* bypassed RIDs connect to ITS group node directly: RC -> ITS */ for (i = 0; i < its_idmaps->len; i++) { range = &g_array_index(its_idmaps, AcpiIortIdMapping, i); /* output IORT node is the ITS group node (the first node) */ build_iort_id_mapping(table_data, range->input_base, range->id_count, iort_node_offset); } } else { /* output IORT node is the ITS group node (the first node) */ build_iort_id_mapping(table_data, 0, 0xFFFF, IORT_NODE_OFFSET); } acpi_table_end(linker, &table); g_array_free(smmu_idmaps, true); g_array_free(its_idmaps, true); } /* * Serial Port Console Redirection Table (SPCR) * Rev: 1.07 */ static void spcr_setup(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { AcpiSpcrData serial = { .interface_type = 3, /* ARM PL011 UART */ .base_addr.id = AML_AS_SYSTEM_MEMORY, .base_addr.width = 32, .base_addr.offset = 0, .base_addr.size = 3, .base_addr.addr = vms->memmap[VIRT_UART].base, .interrupt_type = (1 << 3),/* Bit[3] ARMH GIC interrupt*/ .pc_interrupt = 0, /* IRQ */ .interrupt = (vms->irqmap[VIRT_UART] + ARM_SPI_BASE), .baud_rate = 3, /* 9600 */ .parity = 0, /* No Parity */ .stop_bits = 1, /* 1 Stop bit */ .flow_control = 1 << 1, /* RTS/CTS hardware flow control */ .terminal_type = 0, /* VT100 */ .language = 0, /* Language */ .pci_device_id = 0xffff, /* not a PCI device*/ .pci_vendor_id = 0xffff, /* not a PCI device*/ .pci_bus = 0, .pci_device = 0, .pci_function = 0, .pci_flags = 0, .pci_segment = 0, }; build_spcr(table_data, linker, &serial, 2, vms->oem_id, vms->oem_table_id); } /* * ACPI spec, Revision 5.1 * 5.2.16 System Resource Affinity Table (SRAT) */ static void build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { int i; uint64_t mem_base; MachineClass *mc = MACHINE_GET_CLASS(vms); MachineState *ms = MACHINE(vms); const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms); AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; acpi_table_begin(&table, table_data); build_append_int_noprefix(table_data, 1, 4); /* Reserved */ build_append_int_noprefix(table_data, 0, 8); /* Reserved */ for (i = 0; i < cpu_list->len; ++i) { uint32_t nodeid = cpu_list->cpus[i].props.node_id; /* * 5.2.16.4 GICC Affinity Structure */ build_append_int_noprefix(table_data, 3, 1); /* Type */ build_append_int_noprefix(table_data, 18, 1); /* Length */ build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */ build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ /* Flags, Table 5-76 */ build_append_int_noprefix(table_data, 1 /* Enabled */, 4); build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ } mem_base = vms->memmap[VIRT_MEM].base; for (i = 0; i < ms->numa_state->num_nodes; ++i) { if (ms->numa_state->nodes[i].node_mem > 0) { build_srat_memory(table_data, mem_base, ms->numa_state->nodes[i].node_mem, i, MEM_AFFINITY_ENABLED); mem_base += ms->numa_state->nodes[i].node_mem; } } if (ms->nvdimms_state->is_enabled) { nvdimm_build_srat(table_data); } if (ms->device_memory) { build_srat_memory(table_data, ms->device_memory->base, memory_region_size(&ms->device_memory->mr), ms->numa_state->num_nodes - 1, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } acpi_table_end(linker, &table); } /* * ACPI spec, Revision 6.5 * 5.2.25 Generic Timer Description Table (GTDT) */ static void build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); /* * Table 5-117 Flag Definitions * set only "Timer interrupt Mode" and assume "Timer Interrupt * polarity" bit as '0: Interrupt is Active high' */ uint32_t irqflags = vmc->claim_edge_triggered_timers ? 1 : /* Interrupt is Edge triggered */ 0; /* Interrupt is Level triggered */ AcpiTable table = { .sig = "GTDT", .rev = 3, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; acpi_table_begin(&table, table_data); /* CntControlBase Physical Address */ build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ /* * FIXME: clarify comment: * The interrupt values are the same with the device tree when adding 16 */ /* Secure EL1 timer GSIV */ build_append_int_noprefix(table_data, ARCH_TIMER_S_EL1_IRQ, 4); /* Secure EL1 timer Flags */ build_append_int_noprefix(table_data, irqflags, 4); /* Non-Secure EL1 timer GSIV */ build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL1_IRQ, 4); /* Non-Secure EL1 timer Flags */ build_append_int_noprefix(table_data, irqflags | 1UL << 2, /* Always-on Capability */ 4); /* Virtual timer GSIV */ build_append_int_noprefix(table_data, ARCH_TIMER_VIRT_IRQ, 4); /* Virtual Timer Flags */ build_append_int_noprefix(table_data, irqflags, 4); /* Non-Secure EL2 timer GSIV */ build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_IRQ, 4); /* Non-Secure EL2 timer Flags */ build_append_int_noprefix(table_data, irqflags, 4); /* CntReadBase Physical address */ build_append_int_noprefix(table_data, 0xFFFFFFFFFFFFFFFF, 8); /* Platform Timer Count */ build_append_int_noprefix(table_data, 0, 4); /* Platform Timer Offset */ build_append_int_noprefix(table_data, 0, 4); if (vms->ns_el2_virt_timer_irq) { /* Virtual EL2 Timer GSIV */ build_append_int_noprefix(table_data, ARCH_TIMER_NS_EL2_VIRT_IRQ, 4); /* Virtual EL2 Timer Flags */ build_append_int_noprefix(table_data, irqflags, 4); } else { build_append_int_noprefix(table_data, 0, 4); build_append_int_noprefix(table_data, 0, 4); } acpi_table_end(linker, &table); } /* Debug Port Table 2 (DBG2) */ static void build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { AcpiTable table = { .sig = "DBG2", .rev = 0, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; int dbg2devicelength; const char name[] = "COM0"; const int namespace_length = sizeof(name); acpi_table_begin(&table, table_data); dbg2devicelength = 22 + /* BaseAddressRegister[] offset */ 12 + /* BaseAddressRegister[] */ 4 + /* AddressSize[] */ namespace_length /* NamespaceString[] */; /* OffsetDbgDeviceInfo */ build_append_int_noprefix(table_data, 44, 4); /* NumberDbgDeviceInfo */ build_append_int_noprefix(table_data, 1, 4); /* Table 2. Debug Device Information structure format */ build_append_int_noprefix(table_data, 0, 1); /* Revision */ build_append_int_noprefix(table_data, dbg2devicelength, 2); /* Length */ /* NumberofGenericAddressRegisters */ build_append_int_noprefix(table_data, 1, 1); /* NameSpaceStringLength */ build_append_int_noprefix(table_data, namespace_length, 2); build_append_int_noprefix(table_data, 38, 2); /* NameSpaceStringOffset */ build_append_int_noprefix(table_data, 0, 2); /* OemDataLength */ /* OemDataOffset (0 means no OEM data) */ build_append_int_noprefix(table_data, 0, 2); /* Port Type */ build_append_int_noprefix(table_data, 0x8000 /* Serial */, 2); /* Port Subtype */ build_append_int_noprefix(table_data, 0x3 /* ARM PL011 UART */, 2); build_append_int_noprefix(table_data, 0, 2); /* Reserved */ /* BaseAddressRegisterOffset */ build_append_int_noprefix(table_data, 22, 2); /* AddressSizeOffset */ build_append_int_noprefix(table_data, 34, 2); /* BaseAddressRegister[] */ build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 32, 0, 3, vms->memmap[VIRT_UART].base); /* AddressSize[] */ build_append_int_noprefix(table_data, vms->memmap[VIRT_UART].size, 4); /* NamespaceString[] */ g_array_append_vals(table_data, name, namespace_length); acpi_table_end(linker, &table); }; /* * ACPI spec, Revision 6.0 Errata A * 5.2.12 Multiple APIC Description Table (MADT) */ static void build_append_gicr(GArray *table_data, uint64_t base, uint32_t size) { build_append_int_noprefix(table_data, 0xE, 1); /* Type */ build_append_int_noprefix(table_data, 16, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ /* Discovery Range Base Address */ build_append_int_noprefix(table_data, base, 8); build_append_int_noprefix(table_data, size, 4); /* Discovery Range Length */ } static void build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { int i; VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); const MemMapEntry *memmap = vms->memmap; AcpiTable table = { .sig = "APIC", .rev = 4, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; acpi_table_begin(&table, table_data); /* Local Interrupt Controller Address */ build_append_int_noprefix(table_data, 0, 4); build_append_int_noprefix(table_data, 0, 4); /* Flags */ /* 5.2.12.15 GIC Distributor Structure */ build_append_int_noprefix(table_data, 0xC, 1); /* Type */ build_append_int_noprefix(table_data, 24, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ build_append_int_noprefix(table_data, 0, 4); /* GIC ID */ /* Physical Base Address */ build_append_int_noprefix(table_data, memmap[VIRT_GIC_DIST].base, 8); build_append_int_noprefix(table_data, 0, 4); /* System Vector Base */ /* GIC version */ build_append_int_noprefix(table_data, vms->gic_version, 1); build_append_int_noprefix(table_data, 0, 3); /* Reserved */ for (i = 0; i < MACHINE(vms)->smp.cpus; i++) { ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i)); uint64_t physical_base_address = 0, gich = 0, gicv = 0; uint32_t vgic_interrupt = vms->virt ? ARCH_GIC_MAINT_IRQ : 0; uint32_t pmu_interrupt = arm_feature(&armcpu->env, ARM_FEATURE_PMU) ? VIRTUAL_PMU_IRQ : 0; if (vms->gic_version == VIRT_GIC_VERSION_2) { physical_base_address = memmap[VIRT_GIC_CPU].base; gicv = memmap[VIRT_GIC_VCPU].base; gich = memmap[VIRT_GIC_HYP].base; } /* 5.2.12.14 GIC Structure */ build_append_int_noprefix(table_data, 0xB, 1); /* Type */ build_append_int_noprefix(table_data, 80, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ build_append_int_noprefix(table_data, i, 4); /* GIC ID */ build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */ /* Flags */ build_append_int_noprefix(table_data, 1, 4); /* Enabled */ /* Parking Protocol Version */ build_append_int_noprefix(table_data, 0, 4); /* Performance Interrupt GSIV */ build_append_int_noprefix(table_data, pmu_interrupt, 4); build_append_int_noprefix(table_data, 0, 8); /* Parked Address */ /* Physical Base Address */ build_append_int_noprefix(table_data, physical_base_address, 8); build_append_int_noprefix(table_data, gicv, 8); /* GICV */ build_append_int_noprefix(table_data, gich, 8); /* GICH */ /* VGIC Maintenance interrupt */ build_append_int_noprefix(table_data, vgic_interrupt, 4); build_append_int_noprefix(table_data, 0, 8); /* GICR Base Address*/ /* MPIDR */ build_append_int_noprefix(table_data, arm_cpu_mp_affinity(armcpu), 8); /* Processor Power Efficiency Class */ build_append_int_noprefix(table_data, 0, 1); /* Reserved */ build_append_int_noprefix(table_data, 0, 3); } if (vms->gic_version != VIRT_GIC_VERSION_2) { build_append_gicr(table_data, memmap[VIRT_GIC_REDIST].base, memmap[VIRT_GIC_REDIST].size); if (virt_gicv3_redist_region_count(vms) == 2) { build_append_gicr(table_data, memmap[VIRT_HIGH_GIC_REDIST2].base, memmap[VIRT_HIGH_GIC_REDIST2].size); } if (its_class_name() && !vmc->no_its) { /* * ACPI spec, Revision 6.0 Errata A * (original 6.0 definition has invalid Length) * 5.2.12.18 GIC ITS Structure */ build_append_int_noprefix(table_data, 0xF, 1); /* Type */ build_append_int_noprefix(table_data, 20, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ build_append_int_noprefix(table_data, 0, 4); /* GIC ITS ID */ /* Physical Base Address */ build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].base, 8); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } } else { const uint16_t spi_base = vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE; /* 5.2.12.16 GIC MSI Frame Structure */ build_append_int_noprefix(table_data, 0xD, 1); /* Type */ build_append_int_noprefix(table_data, 24, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ build_append_int_noprefix(table_data, 0, 4); /* GIC MSI Frame ID */ /* Physical Base Address */ build_append_int_noprefix(table_data, memmap[VIRT_GIC_V2M].base, 8); build_append_int_noprefix(table_data, 1, 4); /* Flags */ /* SPI Count */ build_append_int_noprefix(table_data, NUM_GICV2M_SPIS, 2); build_append_int_noprefix(table_data, spi_base, 2); /* SPI Base */ } acpi_table_end(linker, &table); } /* FADT */ static void build_fadt_rev6(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms, unsigned dsdt_tbl_offset) { /* ACPI v6.3 */ AcpiFadtData fadt = { .rev = 6, .minor_ver = 3, .flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI, .xdsdt_tbl_offset = &dsdt_tbl_offset, }; switch (vms->psci_conduit) { case QEMU_PSCI_CONDUIT_DISABLED: fadt.arm_boot_arch = 0; break; case QEMU_PSCI_CONDUIT_HVC: fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT | ACPI_FADT_ARM_PSCI_USE_HVC; break; case QEMU_PSCI_CONDUIT_SMC: fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT; break; default: g_assert_not_reached(); } build_fadt(table_data, linker, &fadt, vms->oem_id, vms->oem_table_id); } /* DSDT */ static void build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); Aml *scope, *dsdt; MachineState *ms = MACHINE(vms); const MemMapEntry *memmap = vms->memmap; const int *irqmap = vms->irqmap; AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = vms->oem_id, .oem_table_id = vms->oem_table_id }; acpi_table_begin(&table, table_data); dsdt = init_aml_allocator(); /* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware. * While UEFI can use libfdt to disable the RTC device node in the DTB that * it passes to the OS, it cannot modify AML. Therefore, we won't generate * the RTC ACPI device at all when using UEFI. */ scope = aml_scope("\\_SB"); acpi_dsdt_add_cpus(scope, vms); acpi_dsdt_add_uart(scope, &memmap[VIRT_UART], (irqmap[VIRT_UART] + ARM_SPI_BASE)); if (vmc->acpi_expose_flash) { acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]); } fw_cfg_acpi_dsdt_add(scope, &memmap[VIRT_FW_CFG]); virtio_acpi_dsdt_add(scope, memmap[VIRT_MMIO].base, memmap[VIRT_MMIO].size, (irqmap[VIRT_MMIO] + ARM_SPI_BASE), 0, NUM_VIRTIO_TRANSPORTS); acpi_dsdt_add_pci(scope, memmap, irqmap[VIRT_PCIE] + ARM_SPI_BASE, vms); if (vms->acpi_dev) { build_ged_aml(scope, "\\_SB."GED_DEVICE, HOTPLUG_HANDLER(vms->acpi_dev), irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY, memmap[VIRT_ACPI_GED].base); } else { acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO], (irqmap[VIRT_GPIO] + ARM_SPI_BASE)); } if (vms->acpi_dev) { uint32_t event = object_property_get_uint(OBJECT(vms->acpi_dev), "ged-event", &error_abort); if (event & ACPI_GED_MEM_HOTPLUG_EVT) { build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL, AML_SYSTEM_MEMORY, memmap[VIRT_PCDIMM_ACPI].base); } } acpi_dsdt_add_power_button(scope); #ifdef CONFIG_TPM acpi_dsdt_add_tpm(scope, vms); #endif aml_append(dsdt, scope); /* copy AML table into ACPI tables blob */ g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); acpi_table_end(linker, &table); free_aml_allocator(); } typedef struct AcpiBuildState { /* Copy of table in RAM (for patching). */ MemoryRegion *table_mr; MemoryRegion *rsdp_mr; MemoryRegion *linker_mr; /* Is table patched? */ bool patched; } AcpiBuildState; static void acpi_align_size(GArray *blob, unsigned align) { /* * Align size to multiple of given size. This reduces the chance * we need to change size in the future (breaking cross version migration). */ g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); } static void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) { VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); GArray *table_offsets; unsigned dsdt, xsdt; GArray *tables_blob = tables->table_data; MachineState *ms = MACHINE(vms); table_offsets = g_array_new(false, true /* clear */, sizeof(uint32_t)); bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, tables_blob, 64, false /* high memory */); /* DSDT is pointed to by FADT */ dsdt = tables_blob->len; build_dsdt(tables_blob, tables->linker, vms); /* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); build_fadt_rev6(tables_blob, tables->linker, vms, dsdt); acpi_add_table(table_offsets, tables_blob); build_madt(tables_blob, tables->linker, vms); if (!vmc->no_cpu_topology) { acpi_add_table(table_offsets, tables_blob); build_pptt(tables_blob, tables->linker, ms, vms->oem_id, vms->oem_table_id); } acpi_add_table(table_offsets, tables_blob); build_gtdt(tables_blob, tables->linker, vms); acpi_add_table(table_offsets, tables_blob); { AcpiMcfgInfo mcfg = { .base = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].base, .size = vms->memmap[VIRT_ECAM_ID(vms->highmem_ecam)].size, }; build_mcfg(tables_blob, tables->linker, &mcfg, vms->oem_id, vms->oem_table_id); } acpi_add_table(table_offsets, tables_blob); spcr_setup(tables_blob, tables->linker, vms); acpi_add_table(table_offsets, tables_blob); build_dbg2(tables_blob, tables->linker, vms); if (vms->ras) { build_ghes_error_table(tables->hardware_errors, tables->linker); acpi_add_table(table_offsets, tables_blob); acpi_build_hest(tables_blob, tables->linker, vms->oem_id, vms->oem_table_id); } if (ms->numa_state->num_nodes > 0) { acpi_add_table(table_offsets, tables_blob); build_srat(tables_blob, tables->linker, vms); if (ms->numa_state->have_numa_distance) { acpi_add_table(table_offsets, tables_blob); build_slit(tables_blob, tables->linker, ms, vms->oem_id, vms->oem_table_id); } if (ms->numa_state->hmat_enabled) { acpi_add_table(table_offsets, tables_blob); build_hmat(tables_blob, tables->linker, ms->numa_state, vms->oem_id, vms->oem_table_id); } } if (ms->nvdimms_state->is_enabled) { nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, ms->nvdimms_state, ms->ram_slots, vms->oem_id, vms->oem_table_id); } if (its_class_name() && !vmc->no_its) { acpi_add_table(table_offsets, tables_blob); build_iort(tables_blob, tables->linker, vms); } #ifdef CONFIG_TPM if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) { acpi_add_table(table_offsets, tables_blob); build_tpm2(tables_blob, tables->linker, tables->tcpalog, vms->oem_id, vms->oem_table_id); } #endif if (vms->iommu == VIRT_IOMMU_VIRTIO) { acpi_add_table(table_offsets, tables_blob); build_viot(ms, tables_blob, tables->linker, vms->virtio_iommu_bdf, vms->oem_id, vms->oem_table_id); } /* XSDT is pointed to by RSDP */ xsdt = tables_blob->len; build_xsdt(tables_blob, tables->linker, table_offsets, vms->oem_id, vms->oem_table_id); /* RSDP is in FSEG memory, so allocate it separately */ { AcpiRsdpData rsdp_data = { .revision = 2, .oem_id = vms->oem_id, .xsdt_tbl_offset = &xsdt, .rsdt_tbl_offset = NULL, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); } /* * The align size is 128, warn if 64k is not enough therefore * the align size could be resized. */ if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { warn_report("ACPI table size %u exceeds %d bytes," " migration may not work", tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); error_printf("Try removing CPUs, NUMA nodes, memory slots" " or PCI bridges.\n"); } acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); /* Cleanup memory that's no longer used. */ g_array_free(table_offsets, true); } static void acpi_ram_update(MemoryRegion *mr, GArray *data) { uint32_t size = acpi_data_len(data); /* Make sure RAM size is correct - in case it got changed * e.g. by migration */ memory_region_ram_resize(mr, size, &error_abort); memcpy(memory_region_get_ram_ptr(mr), data->data, size); memory_region_set_dirty(mr, 0, size); } static void virt_acpi_build_update(void *build_opaque) { AcpiBuildState *build_state = build_opaque; AcpiBuildTables tables; /* No state to update or already patched? Nothing to do. */ if (!build_state || build_state->patched) { return; } build_state->patched = true; acpi_build_tables_init(&tables); virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables); acpi_ram_update(build_state->table_mr, tables.table_data); acpi_ram_update(build_state->rsdp_mr, tables.rsdp); acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); acpi_build_tables_cleanup(&tables, true); } static void virt_acpi_build_reset(void *build_opaque) { AcpiBuildState *build_state = build_opaque; build_state->patched = false; } static const VMStateDescription vmstate_virt_acpi_build = { .name = "virt_acpi_build", .version_id = 1, .minimum_version_id = 1, .fields = (const VMStateField[]) { VMSTATE_BOOL(patched, AcpiBuildState), VMSTATE_END_OF_LIST() }, }; void virt_acpi_setup(VirtMachineState *vms) { AcpiBuildTables tables; AcpiBuildState *build_state; AcpiGedState *acpi_ged_state; if (!vms->fw_cfg) { trace_virt_acpi_setup(); return; } if (!virt_is_acpi_enabled(vms)) { trace_virt_acpi_setup(); return; } build_state = g_malloc0(sizeof *build_state); acpi_build_tables_init(&tables); virt_acpi_build(vms, &tables); /* Now expose it all to Guest */ build_state->table_mr = acpi_add_rom_blob(virt_acpi_build_update, build_state, tables.table_data, ACPI_BUILD_TABLE_FILE); assert(build_state->table_mr != NULL); build_state->linker_mr = acpi_add_rom_blob(virt_acpi_build_update, build_state, tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, acpi_data_len(tables.tcpalog)); if (vms->ras) { assert(vms->acpi_dev); acpi_ged_state = ACPI_GED(vms->acpi_dev); acpi_ghes_add_fw_cfg(&acpi_ged_state->ghes_state, vms->fw_cfg, tables.hardware_errors); } build_state->rsdp_mr = acpi_add_rom_blob(virt_acpi_build_update, build_state, tables.rsdp, ACPI_BUILD_RSDP_FILE); qemu_register_reset(virt_acpi_build_reset, build_state); virt_acpi_build_reset(build_state); vmstate_register(NULL, 0, &vmstate_virt_acpi_build, build_state); /* Cleanup tables but don't free the memory: we track it * in build_state. */ acpi_build_tables_cleanup(&tables, false); }