/* Support for generating ACPI tables and passing them to Guests * * ARM virt ACPI generation * * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2013 Red Hat Inc * * Author: Michael S. Tsirkin <mst@redhat.com> * * Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD. * * Author: Shannon Zhao <zhaoshenglong@huawei.com> * * 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 <http://www.gnu.org/licenses/>. */ #include "qemu-common.h" #include "hw/arm/virt-acpi-build.h" #include "qemu/bitmap.h" #include "trace.h" #include "qom/cpu.h" #include "target-arm/cpu.h" #include "hw/acpi/acpi-defs.h" #include "hw/acpi/acpi.h" #include "hw/nvram/fw_cfg.h" #include "hw/acpi/bios-linker-loader.h" #include "hw/loader.h" #include "hw/hw.h" #include "hw/acpi/aml-build.h" #include "hw/pci/pcie_host.h" #include "hw/pci/pci.h" #define ARM_SPI_BASE 32 typedef struct VirtAcpiCpuInfo { DECLARE_BITMAP(found_cpus, VIRT_ACPI_CPU_ID_LIMIT); } VirtAcpiCpuInfo; static void virt_acpi_get_cpu_info(VirtAcpiCpuInfo *cpuinfo) { CPUState *cpu; memset(cpuinfo->found_cpus, 0, sizeof cpuinfo->found_cpus); CPU_FOREACH(cpu) { set_bit(cpu->cpu_index, cpuinfo->found_cpus); } } static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus) { uint16_t i; for (i = 0; i < 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, int 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)); aml_append(dev, aml_name_decl("_CRS", crs)); /* The _ADR entry is used to link this device to the UART described * in the SPCR table, i.e. SPCR.base_address.address == _ADR. */ aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base))); aml_append(scope, dev); } static void acpi_dsdt_add_rtc(Aml *scope, const MemMapEntry *rtc_memmap, int rtc_irq) { Aml *dev = aml_device("RTC0"); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0013"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(rtc_memmap->base, rtc_memmap->size, AML_READ_WRITE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, rtc_irq)); 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; 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_virtio(Aml *scope, const MemMapEntry *virtio_mmio_memmap, int mmio_irq, int num) { hwaddr base = virtio_mmio_memmap->base; hwaddr size = virtio_mmio_memmap->size; int irq = mmio_irq; int i; for (i = 0; i < num; i++) { Aml *dev = aml_device("VR%02u", i); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005"))); aml_append(dev, aml_name_decl("_UID", aml_int(i))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, irq + i)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); base += size; } } static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, int irq) { Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf; int i, bus_no; hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base; hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size; hwaddr base_pio = memmap[VIRT_PCIE_PIO].base; hwaddr size_pio = memmap[VIRT_PCIE_PIO].size; hwaddr base_ecam = memmap[VIRT_PCIE_ECAM].base; hwaddr size_ecam = memmap[VIRT_PCIE_ECAM].size; int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN; Aml *dev = aml_device("%s", "PCI0"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08"))); aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03"))); aml_append(dev, aml_name_decl("_SEG", aml_int(0))); aml_append(dev, aml_name_decl("_BBN", aml_int(0))); aml_append(dev, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, aml_name_decl("_UID", aml_string("PCI0"))); aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device"))); /* Declare the PCI Routing Table. */ Aml *rt_pkg = aml_package(nr_pcie_buses * PCI_NUM_PINS); for (bus_no = 0; bus_no < nr_pcie_buses; bus_no++) { for (i = 0; i < PCI_NUM_PINS; i++) { int gsi = (i + bus_no) % PCI_NUM_PINS; Aml *pkg = aml_package(4); aml_append(pkg, aml_int((bus_no << 16) | 0xFFFF)); aml_append(pkg, aml_int(i)); aml_append(pkg, aml_name("GSI%d", gsi)); aml_append(pkg, aml_int(0)); aml_append(rt_pkg, pkg); } } aml_append(dev, aml_name_decl("_PRT", rt_pkg)); /* Create GSI link device */ for (i = 0; i < PCI_NUM_PINS; i++) { Aml *dev_gsi = aml_device("GSI%d", i); aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F"))); aml_append(dev_gsi, aml_name_decl("_UID", aml_int(0))); crs = aml_resource_template(); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, irq + i)); aml_append(dev_gsi, aml_name_decl("_PRS", crs)); crs = aml_resource_template(); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, irq + i)); aml_append(dev_gsi, aml_name_decl("_CRS", crs)); method = aml_method("_SRS", 1); aml_append(dev_gsi, method); aml_append(dev, dev_gsi); } method = aml_method("_CBA", 0); aml_append(method, aml_return(aml_int(base_ecam))); aml_append(dev, method); method = aml_method("_CRS", 0); Aml *rbuf = aml_resource_template(); aml_append(rbuf, aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 0x0000, 0x0000, nr_pcie_buses - 1, 0x0000, nr_pcie_buses)); aml_append(rbuf, aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio, base_mmio + size_mmio - 1, 0x0000, size_mmio)); aml_append(rbuf, aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio, size_pio)); aml_append(method, aml_name_decl("RBUF", rbuf)); aml_append(method, aml_return(rbuf)); aml_append(dev, method); /* Declare an _OSC (OS Control Handoff) method */ aml_append(dev, aml_name_decl("SUPP", aml_int(0))); aml_append(dev, aml_name_decl("CTRL", aml_int(0))); method = aml_method("_OSC", 4); aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); /* PCI Firmware Specification 3.0 * 4.5.1. _OSC Interface for PCI Host Bridge Devices * The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is * identified by the Universal Unique IDentifier (UUID) * 33DB4D5B-1FF7-401C-9657-7441C03DD766 */ UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"); ifctx = aml_if(aml_equal(aml_arg(0), UUID)); aml_append(ifctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); aml_append(ifctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP"))); aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL"))); aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D)), aml_name("CTRL"))); ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1)))); aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08)), aml_name("CDW1"))); aml_append(ifctx, ifctx1); ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL")))); aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x10)), aml_name("CDW1"))); aml_append(ifctx, ifctx1); aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3"))); aml_append(ifctx, aml_return(aml_arg(3))); aml_append(method, ifctx); elsectx = aml_else(); aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4)), aml_name("CDW1"))); aml_append(elsectx, aml_return(aml_arg(3))); aml_append(method, elsectx); aml_append(dev, method); method = aml_method("_DSM", 4); /* PCI Firmware Specification 3.0 * 4.6.1. _DSM for PCI Express Slot Information * The UUID in _DSM in this context is * {E5C937D0-3553-4D7A-9117-EA4D19C3434D} */ UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); ifctx = aml_if(aml_equal(aml_arg(0), UUID)); ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0))); uint8_t byte_list[1] = {1}; buf = aml_buffer(1, byte_list); aml_append(ifctx1, aml_return(buf)); aml_append(ifctx, ifctx1); aml_append(method, ifctx); byte_list[0] = 0; buf = aml_buffer(1, byte_list); aml_append(method, aml_return(buf)); aml_append(dev, method); Aml *dev_rp0 = aml_device("%s", "RP0"); aml_append(dev_rp0, aml_name_decl("_ADR", aml_int(0))); aml_append(dev, dev_rp0); aml_append(scope, dev); } /* RSDP */ static GArray * build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt) { AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp); bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16, true /* fseg memory */); memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature)); memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id)); rsdp->length = cpu_to_le32(sizeof(*rsdp)); rsdp->revision = 0x02; /* Point to RSDT */ rsdp->rsdt_physical_address = cpu_to_le32(rsdt); /* Address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE, ACPI_BUILD_TABLE_FILE, rsdp_table, &rsdp->rsdt_physical_address, sizeof rsdp->rsdt_physical_address); rsdp->checksum = 0; /* Checksum to be filled by Guest linker */ bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, rsdp, rsdp, sizeof *rsdp, &rsdp->checksum); return rsdp_table; } static void build_spcr(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info) { AcpiSerialPortConsoleRedirection *spcr; const MemMapEntry *uart_memmap = &guest_info->memmap[VIRT_UART]; int irq = guest_info->irqmap[VIRT_UART] + ARM_SPI_BASE; spcr = acpi_data_push(table_data, sizeof(*spcr)); spcr->interface_type = 0x3; /* ARM PL011 UART */ spcr->base_address.space_id = AML_SYSTEM_MEMORY; spcr->base_address.bit_width = 8; spcr->base_address.bit_offset = 0; spcr->base_address.access_width = 1; spcr->base_address.address = cpu_to_le64(uart_memmap->base); spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */ spcr->gsi = cpu_to_le32(irq); /* Global System Interrupt */ spcr->baud = 3; /* Baud Rate: 3 = 9600 */ spcr->parity = 0; /* No Parity */ spcr->stopbits = 1; /* 1 Stop bit */ spcr->flowctrl = (1 << 1); /* Bit[1] = RTS/CTS hardware flow control */ spcr->term_type = 0; /* Terminal Type: 0 = VT100 */ spcr->pci_device_id = 0xffff; /* PCI Device ID: not a PCI device */ spcr->pci_vendor_id = 0xffff; /* PCI Vendor ID: not a PCI device */ build_header(linker, table_data, (void *)spcr, "SPCR", sizeof(*spcr), 2); } static void build_mcfg(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info) { AcpiTableMcfg *mcfg; const MemMapEntry *memmap = guest_info->memmap; int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]); mcfg = acpi_data_push(table_data, len); mcfg->allocation[0].address = cpu_to_le64(memmap[VIRT_PCIE_ECAM].base); /* Only a single allocation so no need to play with segments */ mcfg->allocation[0].pci_segment = cpu_to_le16(0); mcfg->allocation[0].start_bus_number = 0; mcfg->allocation[0].end_bus_number = (memmap[VIRT_PCIE_ECAM].size / PCIE_MMCFG_SIZE_MIN) - 1; build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1); } /* GTDT */ static void build_gtdt(GArray *table_data, GArray *linker) { int gtdt_start = table_data->len; AcpiGenericTimerTable *gtdt; gtdt = acpi_data_push(table_data, sizeof *gtdt); /* The interrupt values are the same with the device tree when adding 16 */ gtdt->secure_el1_interrupt = ARCH_TIMER_S_EL1_IRQ + 16; gtdt->secure_el1_flags = ACPI_EDGE_SENSITIVE; gtdt->non_secure_el1_interrupt = ARCH_TIMER_NS_EL1_IRQ + 16; gtdt->non_secure_el1_flags = ACPI_EDGE_SENSITIVE; gtdt->virtual_timer_interrupt = ARCH_TIMER_VIRT_IRQ + 16; gtdt->virtual_timer_flags = ACPI_EDGE_SENSITIVE; gtdt->non_secure_el2_interrupt = ARCH_TIMER_NS_EL2_IRQ + 16; gtdt->non_secure_el2_flags = ACPI_EDGE_SENSITIVE; build_header(linker, table_data, (void *)(table_data->data + gtdt_start), "GTDT", table_data->len - gtdt_start, 2); } /* MADT */ static void build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info, VirtAcpiCpuInfo *cpuinfo) { int madt_start = table_data->len; const MemMapEntry *memmap = guest_info->memmap; const int *irqmap = guest_info->irqmap; AcpiMultipleApicTable *madt; AcpiMadtGenericDistributor *gicd; AcpiMadtGenericMsiFrame *gic_msi; int i; madt = acpi_data_push(table_data, sizeof *madt); for (i = 0; i < guest_info->smp_cpus; i++) { AcpiMadtGenericInterrupt *gicc = acpi_data_push(table_data, sizeof *gicc); gicc->type = ACPI_APIC_GENERIC_INTERRUPT; gicc->length = sizeof(*gicc); gicc->base_address = memmap[VIRT_GIC_CPU].base; gicc->cpu_interface_number = i; gicc->arm_mpidr = i; gicc->uid = i; if (test_bit(i, cpuinfo->found_cpus)) { gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED); } } gicd = acpi_data_push(table_data, sizeof *gicd); gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR; gicd->length = sizeof(*gicd); gicd->base_address = memmap[VIRT_GIC_DIST].base; gic_msi = acpi_data_push(table_data, sizeof *gic_msi); gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME; gic_msi->length = sizeof(*gic_msi); gic_msi->gic_msi_frame_id = 0; gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base); gic_msi->flags = cpu_to_le32(1); gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS); gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE); build_header(linker, table_data, (void *)(table_data->data + madt_start), "APIC", table_data->len - madt_start, 3); } /* FADT */ static void build_fadt(GArray *table_data, GArray *linker, unsigned dsdt) { AcpiFadtDescriptorRev5_1 *fadt = acpi_data_push(table_data, sizeof(*fadt)); /* Hardware Reduced = 1 and use PSCI 0.2+ and with HVC */ fadt->flags = cpu_to_le32(1 << ACPI_FADT_F_HW_REDUCED_ACPI); fadt->arm_boot_flags = cpu_to_le16((1 << ACPI_FADT_ARM_USE_PSCI_G_0_2) | (1 << ACPI_FADT_ARM_PSCI_USE_HVC)); /* ACPI v5.1 (fadt->revision.fadt->minor_revision) */ fadt->minor_revision = 0x1; fadt->dsdt = cpu_to_le32(dsdt); /* DSDT address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_FILE, table_data, &fadt->dsdt, sizeof fadt->dsdt); build_header(linker, table_data, (void *)fadt, "FACP", sizeof(*fadt), 5); } /* DSDT */ static void build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info) { Aml *scope, *dsdt; const MemMapEntry *memmap = guest_info->memmap; const int *irqmap = guest_info->irqmap; dsdt = init_aml_allocator(); /* Reserve space for header */ acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader)); scope = aml_scope("\\_SB"); acpi_dsdt_add_cpus(scope, guest_info->smp_cpus); acpi_dsdt_add_uart(scope, &memmap[VIRT_UART], (irqmap[VIRT_UART] + ARM_SPI_BASE)); acpi_dsdt_add_rtc(scope, &memmap[VIRT_RTC], (irqmap[VIRT_RTC] + ARM_SPI_BASE)); acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]); acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO], (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS); acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE)); aml_append(dsdt, scope); /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); build_header(linker, table_data, (void *)(table_data->data + table_data->len - dsdt->buf->len), "DSDT", dsdt->buf->len, 2); 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; VirtGuestInfo *guest_info; } AcpiBuildState; static void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables) { GArray *table_offsets; unsigned dsdt, rsdt; VirtAcpiCpuInfo cpuinfo; GArray *tables_blob = tables->table_data; virt_acpi_get_cpu_info(&cpuinfo); table_offsets = g_array_new(false, true /* clear */, sizeof(uint32_t)); bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, 64, false /* high memory */); /* * The ACPI v5.1 tables for Hardware-reduced ACPI platform are: * RSDP * RSDT * FADT * GTDT * MADT * MCFG * DSDT */ /* DSDT is pointed to by FADT */ dsdt = tables_blob->len; build_dsdt(tables_blob, tables->linker, guest_info); /* FADT MADT GTDT MCFG SPCR pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); build_fadt(tables_blob, tables->linker, dsdt); acpi_add_table(table_offsets, tables_blob); build_madt(tables_blob, tables->linker, guest_info, &cpuinfo); acpi_add_table(table_offsets, tables_blob); build_gtdt(tables_blob, tables->linker); acpi_add_table(table_offsets, tables_blob); build_mcfg(tables_blob, tables->linker, guest_info); acpi_add_table(table_offsets, tables_blob); build_spcr(tables_blob, tables->linker, guest_info); /* RSDT is pointed to by RSDP */ rsdt = tables_blob->len; build_rsdt(tables_blob, tables->linker, table_offsets); /* RSDP is in FSEG memory, so allocate it separately */ build_rsdp(tables->rsdp, tables->linker, rsdt); /* 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, uint32_t offset) { 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(build_state->guest_info, &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); 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 MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state, GArray *blob, const char *name, uint64_t max_size) { return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1, name, virt_acpi_build_update, build_state); } static const VMStateDescription vmstate_virt_acpi_build = { .name = "virt_acpi_build", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_BOOL(patched, AcpiBuildState), VMSTATE_END_OF_LIST() }, }; void virt_acpi_setup(VirtGuestInfo *guest_info) { AcpiBuildTables tables; AcpiBuildState *build_state; if (!guest_info->fw_cfg) { trace_virt_acpi_setup(); return; } if (!acpi_enabled) { trace_virt_acpi_setup(); return; } build_state = g_malloc0(sizeof *build_state); build_state->guest_info = guest_info; acpi_build_tables_init(&tables); virt_acpi_build(build_state->guest_info, &tables); /* Now expose it all to Guest */ build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_MAX_SIZE); assert(build_state->table_mr != NULL); build_state->linker_mr = acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0); fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, acpi_data_len(tables.tcpalog)); build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp, ACPI_BUILD_RSDP_FILE, 0); 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); }