| /* Support for generating ACPI tables and passing them to Guests |
| * |
| * 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> |
| * |
| * 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 "acpi-build.h" |
| #include <stddef.h> |
| #include <glib.h> |
| #include "qemu-common.h" |
| #include "qemu/bitmap.h" |
| #include "qemu/range.h" |
| #include "hw/pci/pci.h" |
| #include "qom/cpu.h" |
| #include "hw/i386/pc.h" |
| #include "target-i386/cpu.h" |
| #include "hw/timer/hpet.h" |
| #include "hw/i386/acpi-defs.h" |
| #include "hw/acpi/acpi.h" |
| #include "hw/nvram/fw_cfg.h" |
| #include "bios-linker-loader.h" |
| #include "hw/loader.h" |
| |
| /* Supported chipsets: */ |
| #include "hw/acpi/piix4.h" |
| #include "hw/i386/ich9.h" |
| #include "hw/pci/pci_bus.h" |
| #include "hw/pci-host/q35.h" |
| |
| #include "hw/i386/q35-acpi-dsdt.hex" |
| #include "hw/i386/acpi-dsdt.hex" |
| |
| #include "qapi/qmp/qint.h" |
| #include "qom/qom-qobject.h" |
| |
| typedef struct AcpiCpuInfo { |
| DECLARE_BITMAP(found_cpus, MAX_CPUMASK_BITS + 1); |
| } AcpiCpuInfo; |
| |
| typedef struct AcpiMcfgInfo { |
| uint64_t mcfg_base; |
| uint32_t mcfg_size; |
| } AcpiMcfgInfo; |
| |
| typedef struct AcpiPmInfo { |
| bool s3_disabled; |
| bool s4_disabled; |
| uint8_t s4_val; |
| uint16_t sci_int; |
| uint8_t acpi_enable_cmd; |
| uint8_t acpi_disable_cmd; |
| uint32_t gpe0_blk; |
| uint32_t gpe0_blk_len; |
| uint32_t io_base; |
| } AcpiPmInfo; |
| |
| typedef struct AcpiMiscInfo { |
| bool has_hpet; |
| DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX); |
| const unsigned char *dsdt_code; |
| unsigned dsdt_size; |
| uint16_t pvpanic_port; |
| } AcpiMiscInfo; |
| |
| static void acpi_get_dsdt(AcpiMiscInfo *info) |
| { |
| Object *piix = piix4_pm_find(); |
| Object *lpc = ich9_lpc_find(); |
| assert(!!piix != !!lpc); |
| |
| if (piix) { |
| info->dsdt_code = AcpiDsdtAmlCode; |
| info->dsdt_size = sizeof AcpiDsdtAmlCode; |
| } |
| if (lpc) { |
| info->dsdt_code = Q35AcpiDsdtAmlCode; |
| info->dsdt_size = sizeof Q35AcpiDsdtAmlCode; |
| } |
| } |
| |
| static |
| int acpi_add_cpu_info(Object *o, void *opaque) |
| { |
| AcpiCpuInfo *cpu = opaque; |
| uint64_t apic_id; |
| |
| if (object_dynamic_cast(o, TYPE_CPU)) { |
| apic_id = object_property_get_int(o, "apic-id", NULL); |
| assert(apic_id <= MAX_CPUMASK_BITS); |
| |
| set_bit(apic_id, cpu->found_cpus); |
| } |
| |
| object_child_foreach(o, acpi_add_cpu_info, opaque); |
| return 0; |
| } |
| |
| static void acpi_get_cpu_info(AcpiCpuInfo *cpu) |
| { |
| Object *root = object_get_root(); |
| |
| memset(cpu->found_cpus, 0, sizeof cpu->found_cpus); |
| object_child_foreach(root, acpi_add_cpu_info, cpu); |
| } |
| |
| static void acpi_get_pm_info(AcpiPmInfo *pm) |
| { |
| Object *piix = piix4_pm_find(); |
| Object *lpc = ich9_lpc_find(); |
| Object *obj = NULL; |
| QObject *o; |
| |
| if (piix) { |
| obj = piix; |
| } |
| if (lpc) { |
| obj = lpc; |
| } |
| assert(obj); |
| |
| /* Fill in optional s3/s4 related properties */ |
| o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); |
| if (o) { |
| pm->s3_disabled = qint_get_int(qobject_to_qint(o)); |
| } else { |
| pm->s3_disabled = false; |
| } |
| o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); |
| if (o) { |
| pm->s4_disabled = qint_get_int(qobject_to_qint(o)); |
| } else { |
| pm->s4_disabled = false; |
| } |
| o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); |
| if (o) { |
| pm->s4_val = qint_get_int(qobject_to_qint(o)); |
| } else { |
| pm->s4_val = false; |
| } |
| |
| /* Fill in mandatory properties */ |
| pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL); |
| |
| pm->acpi_enable_cmd = object_property_get_int(obj, |
| ACPI_PM_PROP_ACPI_ENABLE_CMD, |
| NULL); |
| pm->acpi_disable_cmd = object_property_get_int(obj, |
| ACPI_PM_PROP_ACPI_DISABLE_CMD, |
| NULL); |
| pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE, |
| NULL); |
| pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK, |
| NULL); |
| pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN, |
| NULL); |
| } |
| |
| static void acpi_get_hotplug_info(AcpiMiscInfo *misc) |
| { |
| int i; |
| PCIBus *bus = find_i440fx(); |
| |
| if (!bus) { |
| /* Only PIIX supports ACPI hotplug */ |
| memset(misc->slot_hotplug_enable, 0, sizeof misc->slot_hotplug_enable); |
| return; |
| } |
| |
| memset(misc->slot_hotplug_enable, 0xff, |
| DIV_ROUND_UP(PCI_SLOT_MAX, BITS_PER_BYTE)); |
| |
| for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { |
| PCIDeviceClass *pc; |
| PCIDevice *pdev = bus->devices[i]; |
| |
| if (!pdev) { |
| continue; |
| } |
| |
| pc = PCI_DEVICE_GET_CLASS(pdev); |
| |
| if (pc->no_hotplug) { |
| int slot = PCI_SLOT(i); |
| |
| clear_bit(slot, misc->slot_hotplug_enable); |
| } |
| } |
| } |
| |
| static void acpi_get_misc_info(AcpiMiscInfo *info) |
| { |
| info->has_hpet = hpet_find(); |
| info->pvpanic_port = pvpanic_port(); |
| } |
| |
| static void acpi_get_pci_info(PcPciInfo *info) |
| { |
| Object *pci_host; |
| bool ambiguous; |
| |
| pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous); |
| g_assert(!ambiguous); |
| g_assert(pci_host); |
| |
| info->w32.begin = object_property_get_int(pci_host, |
| PCI_HOST_PROP_PCI_HOLE_START, |
| NULL); |
| info->w32.end = object_property_get_int(pci_host, |
| PCI_HOST_PROP_PCI_HOLE_END, |
| NULL); |
| info->w64.begin = object_property_get_int(pci_host, |
| PCI_HOST_PROP_PCI_HOLE64_START, |
| NULL); |
| info->w64.end = object_property_get_int(pci_host, |
| PCI_HOST_PROP_PCI_HOLE64_END, |
| NULL); |
| } |
| |
| #define ACPI_BUILD_APPNAME "Bochs" |
| #define ACPI_BUILD_APPNAME6 "BOCHS " |
| #define ACPI_BUILD_APPNAME4 "BXPC" |
| |
| #define ACPI_BUILD_DPRINTF(level, fmt, ...) do {} while (0) |
| |
| #define ACPI_BUILD_TABLE_FILE "etc/acpi/tables" |
| #define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp" |
| |
| static void |
| build_header(GArray *linker, GArray *table_data, |
| AcpiTableHeader *h, uint32_t sig, int len, uint8_t rev) |
| { |
| h->signature = cpu_to_le32(sig); |
| h->length = cpu_to_le32(len); |
| h->revision = rev; |
| memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6); |
| memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4); |
| memcpy(h->oem_table_id + 4, (void *)&sig, 4); |
| h->oem_revision = cpu_to_le32(1); |
| memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4); |
| h->asl_compiler_revision = cpu_to_le32(1); |
| h->checksum = 0; |
| /* Checksum to be filled in by Guest linker */ |
| bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE, |
| table_data->data, h, len, &h->checksum); |
| } |
| |
| static inline GArray *build_alloc_array(void) |
| { |
| return g_array_new(false, true /* clear */, 1); |
| } |
| |
| static inline void build_free_array(GArray *array) |
| { |
| g_array_free(array, true); |
| } |
| |
| static inline void build_prepend_byte(GArray *array, uint8_t val) |
| { |
| g_array_prepend_val(array, val); |
| } |
| |
| static inline void build_append_byte(GArray *array, uint8_t val) |
| { |
| g_array_append_val(array, val); |
| } |
| |
| static inline void build_append_array(GArray *array, GArray *val) |
| { |
| g_array_append_vals(array, val->data, val->len); |
| } |
| |
| static void GCC_FMT_ATTR(2, 3) |
| build_append_nameseg(GArray *array, const char *format, ...) |
| { |
| /* It would be nicer to use g_string_vprintf but it's only there in 2.22 */ |
| char s[] = "XXXX"; |
| int len; |
| va_list args; |
| |
| va_start(args, format); |
| len = vsnprintf(s, sizeof s, format, args); |
| va_end(args); |
| |
| assert(len == 4); |
| g_array_append_vals(array, s, len); |
| } |
| |
| /* 5.4 Definition Block Encoding */ |
| enum { |
| PACKAGE_LENGTH_1BYTE_SHIFT = 6, /* Up to 63 - use extra 2 bits. */ |
| PACKAGE_LENGTH_2BYTE_SHIFT = 4, |
| PACKAGE_LENGTH_3BYTE_SHIFT = 12, |
| PACKAGE_LENGTH_4BYTE_SHIFT = 20, |
| }; |
| |
| static void build_prepend_package_length(GArray *package, unsigned min_bytes) |
| { |
| uint8_t byte; |
| unsigned length = package->len; |
| unsigned length_bytes; |
| |
| if (length + 1 < (1 << PACKAGE_LENGTH_1BYTE_SHIFT)) { |
| length_bytes = 1; |
| } else if (length + 2 < (1 << PACKAGE_LENGTH_3BYTE_SHIFT)) { |
| length_bytes = 2; |
| } else if (length + 3 < (1 << PACKAGE_LENGTH_4BYTE_SHIFT)) { |
| length_bytes = 3; |
| } else { |
| length_bytes = 4; |
| } |
| |
| /* Force length to at least min_bytes. |
| * This wastes memory but that's how bios did it. |
| */ |
| length_bytes = MAX(length_bytes, min_bytes); |
| |
| /* PkgLength is the length of the inclusive length of the data. */ |
| length += length_bytes; |
| |
| switch (length_bytes) { |
| case 1: |
| byte = length; |
| build_prepend_byte(package, byte); |
| return; |
| case 4: |
| byte = length >> PACKAGE_LENGTH_4BYTE_SHIFT; |
| build_prepend_byte(package, byte); |
| length &= (1 << PACKAGE_LENGTH_4BYTE_SHIFT) - 1; |
| /* fall through */ |
| case 3: |
| byte = length >> PACKAGE_LENGTH_3BYTE_SHIFT; |
| build_prepend_byte(package, byte); |
| length &= (1 << PACKAGE_LENGTH_3BYTE_SHIFT) - 1; |
| /* fall through */ |
| case 2: |
| byte = length >> PACKAGE_LENGTH_2BYTE_SHIFT; |
| build_prepend_byte(package, byte); |
| length &= (1 << PACKAGE_LENGTH_2BYTE_SHIFT) - 1; |
| /* fall through */ |
| } |
| /* |
| * Most significant two bits of byte zero indicate how many following bytes |
| * are in PkgLength encoding. |
| */ |
| byte = ((length_bytes - 1) << PACKAGE_LENGTH_1BYTE_SHIFT) | length; |
| build_prepend_byte(package, byte); |
| } |
| |
| static void build_package(GArray *package, uint8_t op, unsigned min_bytes) |
| { |
| build_prepend_package_length(package, min_bytes); |
| build_prepend_byte(package, op); |
| } |
| |
| static void build_append_value(GArray *table, uint32_t value, int size) |
| { |
| uint8_t prefix; |
| int i; |
| |
| switch (size) { |
| case 1: |
| prefix = 0x0A; /* BytePrefix */ |
| break; |
| case 2: |
| prefix = 0x0B; /* WordPrefix */ |
| break; |
| case 4: |
| prefix = 0x0C; /* DWordPrefix */ |
| break; |
| default: |
| assert(0); |
| return; |
| } |
| build_append_byte(table, prefix); |
| for (i = 0; i < size; ++i) { |
| build_append_byte(table, value & 0xFF); |
| value = value >> 8; |
| } |
| } |
| |
| static void build_append_notify_target(GArray *method, GArray *target_name, |
| uint32_t value, int size) |
| { |
| GArray *notify = build_alloc_array(); |
| uint8_t op = 0xA0; /* IfOp */ |
| |
| build_append_byte(notify, 0x93); /* LEqualOp */ |
| build_append_byte(notify, 0x68); /* Arg0Op */ |
| build_append_value(notify, value, size); |
| build_append_byte(notify, 0x86); /* NotifyOp */ |
| build_append_array(notify, target_name); |
| build_append_byte(notify, 0x69); /* Arg1Op */ |
| |
| /* Pack it up */ |
| build_package(notify, op, 1); |
| |
| build_append_array(method, notify); |
| |
| build_free_array(notify); |
| } |
| |
| #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */ |
| |
| static inline void *acpi_data_push(GArray *table_data, unsigned size) |
| { |
| unsigned off = table_data->len; |
| g_array_set_size(table_data, off + size); |
| return table_data->data + off; |
| } |
| |
| static unsigned acpi_data_len(GArray *table) |
| { |
| #if GLIB_CHECK_VERSION(2, 22, 0) |
| assert(g_array_get_element_size(table) == 1); |
| #endif |
| return table->len; |
| } |
| |
| 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)); |
| } |
| |
| /* Get pointer within table in a safe manner */ |
| #define ACPI_BUILD_PTR(table, size, off, type) \ |
| ((type *)(acpi_data_get_ptr(table, size, off, sizeof(type)))) |
| |
| static inline void *acpi_data_get_ptr(uint8_t *table_data, unsigned table_size, |
| unsigned off, unsigned size) |
| { |
| assert(off + size > off); |
| assert(off + size <= table_size); |
| return table_data + off; |
| } |
| |
| static inline void acpi_add_table(GArray *table_offsets, GArray *table_data) |
| { |
| uint32_t offset = cpu_to_le32(table_data->len); |
| g_array_append_val(table_offsets, offset); |
| } |
| |
| /* FACS */ |
| static void |
| build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) |
| { |
| AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); |
| facs->signature = cpu_to_le32(ACPI_FACS_SIGNATURE); |
| facs->length = cpu_to_le32(sizeof(*facs)); |
| } |
| |
| /* Load chipset information in FADT */ |
| static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) |
| { |
| fadt->model = 1; |
| fadt->reserved1 = 0; |
| fadt->sci_int = cpu_to_le16(pm->sci_int); |
| fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD); |
| fadt->acpi_enable = pm->acpi_enable_cmd; |
| fadt->acpi_disable = pm->acpi_disable_cmd; |
| /* EVT, CNT, TMR offset matches hw/acpi/core.c */ |
| fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base); |
| fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04); |
| fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08); |
| fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk); |
| /* EVT, CNT, TMR length matches hw/acpi/core.c */ |
| fadt->pm1_evt_len = 4; |
| fadt->pm1_cnt_len = 2; |
| fadt->pm_tmr_len = 4; |
| fadt->gpe0_blk_len = pm->gpe0_blk_len; |
| fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */ |
| fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */ |
| fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) | |
| (1 << ACPI_FADT_F_PROC_C1) | |
| (1 << ACPI_FADT_F_SLP_BUTTON) | |
| (1 << ACPI_FADT_F_RTC_S4)); |
| fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK); |
| } |
| |
| |
| /* FADT */ |
| static void |
| build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm, |
| unsigned facs, unsigned dsdt) |
| { |
| AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt)); |
| |
| fadt->firmware_ctrl = cpu_to_le32(facs); |
| /* FACS address to be filled by Guest linker */ |
| bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, |
| ACPI_BUILD_TABLE_FILE, |
| table_data, &fadt->firmware_ctrl, |
| sizeof fadt->firmware_ctrl); |
| |
| 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); |
| |
| fadt_setup(fadt, pm); |
| |
| build_header(linker, table_data, |
| (void *)fadt, ACPI_FACP_SIGNATURE, sizeof(*fadt), 1); |
| } |
| |
| static void |
| build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, |
| PcGuestInfo *guest_info) |
| { |
| int madt_start = table_data->len; |
| |
| AcpiMultipleApicTable *madt; |
| AcpiMadtIoApic *io_apic; |
| AcpiMadtIntsrcovr *intsrcovr; |
| AcpiMadtLocalNmi *local_nmi; |
| int i; |
| |
| madt = acpi_data_push(table_data, sizeof *madt); |
| madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); |
| madt->flags = cpu_to_le32(1); |
| |
| for (i = 0; i < guest_info->apic_id_limit; i++) { |
| AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic); |
| apic->type = ACPI_APIC_PROCESSOR; |
| apic->length = sizeof(*apic); |
| apic->processor_id = i; |
| apic->local_apic_id = i; |
| if (test_bit(i, cpu->found_cpus)) { |
| apic->flags = cpu_to_le32(1); |
| } else { |
| apic->flags = cpu_to_le32(0); |
| } |
| } |
| io_apic = acpi_data_push(table_data, sizeof *io_apic); |
| io_apic->type = ACPI_APIC_IO; |
| io_apic->length = sizeof(*io_apic); |
| #define ACPI_BUILD_IOAPIC_ID 0x0 |
| io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; |
| io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); |
| io_apic->interrupt = cpu_to_le32(0); |
| |
| if (guest_info->apic_xrupt_override) { |
| intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); |
| intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; |
| intsrcovr->length = sizeof(*intsrcovr); |
| intsrcovr->source = 0; |
| intsrcovr->gsi = cpu_to_le32(2); |
| intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ |
| } |
| for (i = 1; i < 16; i++) { |
| #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11)) |
| if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) { |
| /* No need for a INT source override structure. */ |
| continue; |
| } |
| intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); |
| intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; |
| intsrcovr->length = sizeof(*intsrcovr); |
| intsrcovr->source = i; |
| intsrcovr->gsi = cpu_to_le32(i); |
| intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ |
| } |
| |
| local_nmi = acpi_data_push(table_data, sizeof *local_nmi); |
| local_nmi->type = ACPI_APIC_LOCAL_NMI; |
| local_nmi->length = sizeof(*local_nmi); |
| local_nmi->processor_id = 0xff; /* all processors */ |
| local_nmi->flags = cpu_to_le16(0); |
| local_nmi->lint = 1; /* ACPI_LINT1 */ |
| |
| build_header(linker, table_data, |
| (void *)(table_data->data + madt_start), ACPI_APIC_SIGNATURE, |
| table_data->len - madt_start, 1); |
| } |
| |
| /* Encode a hex value */ |
| static inline char acpi_get_hex(uint32_t val) |
| { |
| val &= 0x0f; |
| return (val <= 9) ? ('0' + val) : ('A' + val - 10); |
| } |
| |
| #include "hw/i386/ssdt-proc.hex" |
| |
| /* 0x5B 0x83 ProcessorOp PkgLength NameString ProcID */ |
| #define ACPI_PROC_OFFSET_CPUHEX (*ssdt_proc_name - *ssdt_proc_start + 2) |
| #define ACPI_PROC_OFFSET_CPUID1 (*ssdt_proc_name - *ssdt_proc_start + 4) |
| #define ACPI_PROC_OFFSET_CPUID2 (*ssdt_proc_id - *ssdt_proc_start) |
| #define ACPI_PROC_SIZEOF (*ssdt_proc_end - *ssdt_proc_start) |
| #define ACPI_PROC_AML (ssdp_proc_aml + *ssdt_proc_start) |
| |
| /* 0x5B 0x82 DeviceOp PkgLength NameString */ |
| #define ACPI_PCIHP_OFFSET_HEX (*ssdt_pcihp_name - *ssdt_pcihp_start + 1) |
| #define ACPI_PCIHP_OFFSET_ID (*ssdt_pcihp_id - *ssdt_pcihp_start) |
| #define ACPI_PCIHP_OFFSET_ADR (*ssdt_pcihp_adr - *ssdt_pcihp_start) |
| #define ACPI_PCIHP_OFFSET_EJ0 (*ssdt_pcihp_ej0 - *ssdt_pcihp_start) |
| #define ACPI_PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start) |
| #define ACPI_PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start) |
| |
| #define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */ |
| #define ACPI_SSDT_HEADER_LENGTH 36 |
| |
| #include "hw/i386/ssdt-misc.hex" |
| #include "hw/i386/ssdt-pcihp.hex" |
| |
| static void |
| build_append_notify(GArray *device, const char *name, |
| const char *format, int skip, int count) |
| { |
| int i; |
| GArray *method = build_alloc_array(); |
| uint8_t op = 0x14; /* MethodOp */ |
| |
| build_append_nameseg(method, "%s", name); |
| build_append_byte(method, 0x02); /* MethodFlags: ArgCount */ |
| for (i = skip; i < count; i++) { |
| GArray *target = build_alloc_array(); |
| build_append_nameseg(target, format, i); |
| assert(i < 256); /* Fits in 1 byte */ |
| build_append_notify_target(method, target, i, 1); |
| build_free_array(target); |
| } |
| build_package(method, op, 2); |
| |
| build_append_array(device, method); |
| build_free_array(method); |
| } |
| |
| static void patch_pcihp(int slot, uint8_t *ssdt_ptr, uint32_t eject) |
| { |
| ssdt_ptr[ACPI_PCIHP_OFFSET_HEX] = acpi_get_hex(slot >> 4); |
| ssdt_ptr[ACPI_PCIHP_OFFSET_HEX + 1] = acpi_get_hex(slot); |
| ssdt_ptr[ACPI_PCIHP_OFFSET_ID] = slot; |
| ssdt_ptr[ACPI_PCIHP_OFFSET_ADR + 2] = slot; |
| |
| /* Runtime patching of ACPI_EJ0: to disable hotplug for a slot, |
| * replace the method name: _EJ0 by ACPI_EJ0_. |
| */ |
| /* Sanity check */ |
| assert(!memcmp(ssdt_ptr + ACPI_PCIHP_OFFSET_EJ0, "_EJ0", 4)); |
| |
| if (!eject) { |
| memcpy(ssdt_ptr + ACPI_PCIHP_OFFSET_EJ0, "EJ0_", 4); |
| } |
| } |
| |
| static void patch_pci_windows(PcPciInfo *pci, uint8_t *start, unsigned size) |
| { |
| *ACPI_BUILD_PTR(start, size, acpi_pci32_start[0], uint32_t) = |
| cpu_to_le32(pci->w32.begin); |
| |
| *ACPI_BUILD_PTR(start, size, acpi_pci32_end[0], uint32_t) = |
| cpu_to_le32(pci->w32.end - 1); |
| |
| if (pci->w64.end || pci->w64.begin) { |
| *ACPI_BUILD_PTR(start, size, acpi_pci64_valid[0], uint8_t) = 1; |
| *ACPI_BUILD_PTR(start, size, acpi_pci64_start[0], uint64_t) = |
| cpu_to_le64(pci->w64.begin); |
| *ACPI_BUILD_PTR(start, size, acpi_pci64_end[0], uint64_t) = |
| cpu_to_le64(pci->w64.end - 1); |
| *ACPI_BUILD_PTR(start, size, acpi_pci64_length[0], uint64_t) = |
| cpu_to_le64(pci->w64.end - pci->w64.begin); |
| } else { |
| *ACPI_BUILD_PTR(start, size, acpi_pci64_valid[0], uint8_t) = 0; |
| } |
| } |
| |
| static void |
| build_ssdt(GArray *table_data, GArray *linker, |
| AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, |
| PcPciInfo *pci, PcGuestInfo *guest_info) |
| { |
| int acpi_cpus = MIN(0xff, guest_info->apic_id_limit); |
| int ssdt_start = table_data->len; |
| uint8_t *ssdt_ptr; |
| int i; |
| |
| /* Copy header and patch values in the S3_ / S4_ / S5_ packages */ |
| ssdt_ptr = acpi_data_push(table_data, sizeof(ssdp_misc_aml)); |
| memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml)); |
| if (pm->s3_disabled) { |
| ssdt_ptr[acpi_s3_name[0]] = 'X'; |
| } |
| if (pm->s4_disabled) { |
| ssdt_ptr[acpi_s4_name[0]] = 'X'; |
| } else { |
| ssdt_ptr[acpi_s4_pkg[0] + 1] = ssdt_ptr[acpi_s4_pkg[0] + 3] = |
| pm->s4_val; |
| } |
| |
| patch_pci_windows(pci, ssdt_ptr, sizeof(ssdp_misc_aml)); |
| |
| *(uint16_t *)(ssdt_ptr + *ssdt_isa_pest) = |
| cpu_to_le16(misc->pvpanic_port); |
| |
| { |
| GArray *sb_scope = build_alloc_array(); |
| uint8_t op = 0x10; /* ScopeOp */ |
| |
| build_append_nameseg(sb_scope, "_SB_"); |
| |
| /* build Processor object for each processor */ |
| for (i = 0; i < acpi_cpus; i++) { |
| uint8_t *proc = acpi_data_push(sb_scope, ACPI_PROC_SIZEOF); |
| memcpy(proc, ACPI_PROC_AML, ACPI_PROC_SIZEOF); |
| proc[ACPI_PROC_OFFSET_CPUHEX] = acpi_get_hex(i >> 4); |
| proc[ACPI_PROC_OFFSET_CPUHEX+1] = acpi_get_hex(i); |
| proc[ACPI_PROC_OFFSET_CPUID1] = i; |
| proc[ACPI_PROC_OFFSET_CPUID2] = i; |
| } |
| |
| /* build this code: |
| * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...} |
| */ |
| /* Arg0 = Processor ID = APIC ID */ |
| build_append_notify(sb_scope, "NTFY", "CP%0.02X", 0, acpi_cpus); |
| |
| /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })" */ |
| build_append_byte(sb_scope, 0x08); /* NameOp */ |
| build_append_nameseg(sb_scope, "CPON"); |
| |
| { |
| GArray *package = build_alloc_array(); |
| uint8_t op = 0x12; /* PackageOp */ |
| |
| build_append_byte(package, acpi_cpus); /* NumElements */ |
| for (i = 0; i < acpi_cpus; i++) { |
| uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00; |
| build_append_byte(package, b); |
| } |
| |
| build_package(package, op, 2); |
| build_append_array(sb_scope, package); |
| build_free_array(package); |
| } |
| |
| { |
| GArray *pci0 = build_alloc_array(); |
| uint8_t op = 0x10; /* ScopeOp */; |
| |
| build_append_nameseg(pci0, "PCI0"); |
| |
| /* build Device object for each slot */ |
| for (i = 1; i < PCI_SLOT_MAX; i++) { |
| bool eject = test_bit(i, misc->slot_hotplug_enable); |
| void *pcihp = acpi_data_push(pci0, ACPI_PCIHP_SIZEOF); |
| |
| memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF); |
| patch_pcihp(i, pcihp, eject); |
| } |
| |
| build_append_notify(pci0, "PCNT", "S%0.02X_", 1, PCI_SLOT_MAX); |
| build_package(pci0, op, 3); |
| build_append_array(sb_scope, pci0); |
| build_free_array(pci0); |
| } |
| |
| build_package(sb_scope, op, 3); |
| build_append_array(table_data, sb_scope); |
| build_free_array(sb_scope); |
| } |
| |
| build_header(linker, table_data, |
| (void *)(table_data->data + ssdt_start), |
| ACPI_SSDT_SIGNATURE, table_data->len - ssdt_start, 1); |
| } |
| |
| static void |
| build_hpet(GArray *table_data, GArray *linker) |
| { |
| Acpi20Hpet *hpet; |
| |
| hpet = acpi_data_push(table_data, sizeof(*hpet)); |
| /* Note timer_block_id value must be kept in sync with value advertised by |
| * emulated hpet |
| */ |
| hpet->timer_block_id = cpu_to_le32(0x8086a201); |
| hpet->addr.address = cpu_to_le64(HPET_BASE); |
| build_header(linker, table_data, |
| (void *)hpet, ACPI_HPET_SIGNATURE, sizeof(*hpet), 1); |
| } |
| |
| static void |
| acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, |
| uint64_t base, uint64_t len, int node, int enabled) |
| { |
| numamem->type = ACPI_SRAT_MEMORY; |
| numamem->length = sizeof(*numamem); |
| memset(numamem->proximity, 0, 4); |
| numamem->proximity[0] = node; |
| numamem->flags = cpu_to_le32(!!enabled); |
| numamem->base_addr = cpu_to_le64(base); |
| numamem->range_length = cpu_to_le64(len); |
| } |
| |
| static void |
| build_srat(GArray *table_data, GArray *linker, |
| AcpiCpuInfo *cpu, PcGuestInfo *guest_info) |
| { |
| AcpiSystemResourceAffinityTable *srat; |
| AcpiSratProcessorAffinity *core; |
| AcpiSratMemoryAffinity *numamem; |
| |
| int i; |
| uint64_t curnode; |
| int srat_start, numa_start, slots; |
| uint64_t mem_len, mem_base, next_base; |
| |
| srat_start = table_data->len; |
| |
| srat = acpi_data_push(table_data, sizeof *srat); |
| srat->reserved1 = cpu_to_le32(1); |
| core = (void *)(srat + 1); |
| |
| for (i = 0; i < guest_info->apic_id_limit; ++i) { |
| core = acpi_data_push(table_data, sizeof *core); |
| core->type = ACPI_SRAT_PROCESSOR; |
| core->length = sizeof(*core); |
| core->local_apic_id = i; |
| curnode = guest_info->node_cpu[i]; |
| core->proximity_lo = curnode; |
| memset(core->proximity_hi, 0, 3); |
| core->local_sapic_eid = 0; |
| if (test_bit(i, cpu->found_cpus)) { |
| core->flags = cpu_to_le32(1); |
| } else { |
| core->flags = cpu_to_le32(0); |
| } |
| } |
| |
| |
| /* the memory map is a bit tricky, it contains at least one hole |
| * from 640k-1M and possibly another one from 3.5G-4G. |
| */ |
| next_base = 0; |
| numa_start = table_data->len; |
| |
| numamem = acpi_data_push(table_data, sizeof *numamem); |
| acpi_build_srat_memory(numamem, 0, 640*1024, 0, 1); |
| next_base = 1024 * 1024; |
| for (i = 1; i < guest_info->numa_nodes + 1; ++i) { |
| mem_base = next_base; |
| mem_len = guest_info->node_mem[i - 1]; |
| if (i == 1) { |
| mem_len -= 1024 * 1024; |
| } |
| next_base = mem_base + mem_len; |
| |
| /* Cut out the ACPI_PCI hole */ |
| if (mem_base <= guest_info->ram_size && |
| next_base > guest_info->ram_size) { |
| mem_len -= next_base - guest_info->ram_size; |
| if (mem_len > 0) { |
| numamem = acpi_data_push(table_data, sizeof *numamem); |
| acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1); |
| } |
| mem_base = 1ULL << 32; |
| mem_len = next_base - guest_info->ram_size; |
| next_base += (1ULL << 32) - guest_info->ram_size; |
| } |
| numamem = acpi_data_push(table_data, sizeof *numamem); |
| acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1, 1); |
| } |
| slots = (table_data->len - numa_start) / sizeof *numamem; |
| for (; slots < guest_info->numa_nodes + 2; slots++) { |
| numamem = acpi_data_push(table_data, sizeof *numamem); |
| acpi_build_srat_memory(numamem, 0, 0, 0, 0); |
| } |
| |
| build_header(linker, table_data, |
| (void *)(table_data->data + srat_start), |
| ACPI_SRAT_SIGNATURE, |
| table_data->len - srat_start, 1); |
| } |
| |
| static void |
| build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info) |
| { |
| AcpiTableMcfg *mcfg; |
| uint32_t sig; |
| int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]); |
| |
| mcfg = acpi_data_push(table_data, len); |
| mcfg->allocation[0].address = cpu_to_le64(info->mcfg_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 = PCIE_MMCFG_BUS(info->mcfg_size - 1); |
| |
| /* MCFG is used for ECAM which can be enabled or disabled by guest. |
| * To avoid table size changes (which create migration issues), |
| * always create the table even if there are no allocations, |
| * but set the signature to a reserved value in this case. |
| * ACPI spec requires OSPMs to ignore such tables. |
| */ |
| if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) { |
| sig = ACPI_RSRV_SIGNATURE; |
| } else { |
| sig = ACPI_MCFG_SIGNATURE; |
| } |
| build_header(linker, table_data, (void *)mcfg, sig, len, 1); |
| } |
| |
| static void |
| build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc) |
| { |
| AcpiTableHeader *dsdt; |
| |
| assert(misc->dsdt_code && misc->dsdt_size); |
| |
| dsdt = acpi_data_push(table_data, misc->dsdt_size); |
| memcpy(dsdt, misc->dsdt_code, misc->dsdt_size); |
| |
| memset(dsdt, 0, sizeof *dsdt); |
| build_header(linker, table_data, dsdt, ACPI_DSDT_SIGNATURE, |
| misc->dsdt_size, 1); |
| } |
| |
| /* Build final rsdt table */ |
| static void |
| build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets) |
| { |
| AcpiRsdtDescriptorRev1 *rsdt; |
| size_t rsdt_len; |
| int i; |
| |
| rsdt_len = sizeof(*rsdt) + sizeof(uint32_t) * table_offsets->len; |
| rsdt = acpi_data_push(table_data, rsdt_len); |
| memcpy(rsdt->table_offset_entry, table_offsets->data, |
| sizeof(uint32_t) * table_offsets->len); |
| for (i = 0; i < table_offsets->len; ++i) { |
| /* rsdt->table_offset_entry to be filled by Guest linker */ |
| bios_linker_loader_add_pointer(linker, |
| ACPI_BUILD_TABLE_FILE, |
| ACPI_BUILD_TABLE_FILE, |
| table_data, &rsdt->table_offset_entry[i], |
| sizeof(uint32_t)); |
| } |
| build_header(linker, table_data, |
| (void *)rsdt, ACPI_RSDT_SIGNATURE, rsdt_len, 1); |
| } |
| |
| 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, 1, |
| true /* fseg memory */); |
| |
| rsdp->signature = cpu_to_le64(ACPI_RSDP_SIGNATURE); |
| memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6); |
| 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; |
| } |
| |
| typedef |
| struct AcpiBuildTables { |
| GArray *table_data; |
| GArray *rsdp; |
| GArray *linker; |
| } AcpiBuildTables; |
| |
| static inline void acpi_build_tables_init(AcpiBuildTables *tables) |
| { |
| tables->rsdp = g_array_new(false, true /* clear */, 1); |
| tables->table_data = g_array_new(false, true /* clear */, 1); |
| tables->linker = bios_linker_loader_init(); |
| } |
| |
| static inline void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre) |
| { |
| void *linker_data = bios_linker_loader_cleanup(tables->linker); |
| if (mfre) { |
| g_free(linker_data); |
| } |
| g_array_free(tables->rsdp, mfre); |
| g_array_free(tables->table_data, mfre); |
| } |
| |
| typedef |
| struct AcpiBuildState { |
| /* Copy of table in RAM (for patching). */ |
| uint8_t *table_ram; |
| uint32_t table_size; |
| /* Is table patched? */ |
| uint8_t patched; |
| PcGuestInfo *guest_info; |
| } AcpiBuildState; |
| |
| static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) |
| { |
| Object *pci_host; |
| QObject *o; |
| bool ambiguous; |
| |
| pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous); |
| g_assert(!ambiguous); |
| g_assert(pci_host); |
| |
| o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); |
| if (!o) { |
| return false; |
| } |
| mcfg->mcfg_base = qint_get_int(qobject_to_qint(o)); |
| |
| o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); |
| assert(o); |
| mcfg->mcfg_size = qint_get_int(qobject_to_qint(o)); |
| return true; |
| } |
| |
| static |
| void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables) |
| { |
| GArray *table_offsets; |
| unsigned facs, dsdt, rsdt; |
| AcpiCpuInfo cpu; |
| AcpiPmInfo pm; |
| AcpiMiscInfo misc; |
| AcpiMcfgInfo mcfg; |
| PcPciInfo pci; |
| uint8_t *u; |
| |
| acpi_get_cpu_info(&cpu); |
| acpi_get_pm_info(&pm); |
| acpi_get_dsdt(&misc); |
| acpi_get_hotplug_info(&misc); |
| acpi_get_misc_info(&misc); |
| acpi_get_pci_info(&pci); |
| |
| table_offsets = g_array_new(false, true /* clear */, |
| sizeof(uint32_t)); |
| ACPI_BUILD_DPRINTF(3, "init ACPI tables\n"); |
| |
| bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, |
| 64 /* Ensure FACS is aligned */, |
| false /* high memory */); |
| |
| /* |
| * FACS is pointed to by FADT. |
| * We place it first since it's the only table that has alignment |
| * requirements. |
| */ |
| facs = tables->table_data->len; |
| build_facs(tables->table_data, tables->linker, guest_info); |
| |
| /* DSDT is pointed to by FADT */ |
| dsdt = tables->table_data->len; |
| build_dsdt(tables->table_data, tables->linker, &misc); |
| |
| /* ACPI tables pointed to by RSDT */ |
| acpi_add_table(table_offsets, tables->table_data); |
| build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt); |
| acpi_add_table(table_offsets, tables->table_data); |
| |
| build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci, |
| guest_info); |
| acpi_add_table(table_offsets, tables->table_data); |
| |
| build_madt(tables->table_data, tables->linker, &cpu, guest_info); |
| acpi_add_table(table_offsets, tables->table_data); |
| if (misc.has_hpet) { |
| build_hpet(tables->table_data, tables->linker); |
| } |
| if (guest_info->numa_nodes) { |
| acpi_add_table(table_offsets, tables->table_data); |
| build_srat(tables->table_data, tables->linker, &cpu, guest_info); |
| } |
| if (acpi_get_mcfg(&mcfg)) { |
| acpi_add_table(table_offsets, tables->table_data); |
| build_mcfg_q35(tables->table_data, tables->linker, &mcfg); |
| } |
| |
| /* Add tables supplied by user (if any) */ |
| for (u = acpi_table_first(); u; u = acpi_table_next(u)) { |
| unsigned len = acpi_table_len(u); |
| |
| acpi_add_table(table_offsets, tables->table_data); |
| g_array_append_vals(tables->table_data, u, len); |
| } |
| |
| /* RSDT is pointed to by RSDP */ |
| rsdt = tables->table_data->len; |
| build_rsdt(tables->table_data, tables->linker, table_offsets); |
| |
| /* RSDP is in FSEG memory, so allocate it separately */ |
| build_rsdp(tables->rsdp, tables->linker, rsdt); |
| |
| /* We'll expose it all to Guest so align size to reduce |
| * chance of size changes. |
| * RSDP is small so it's easy to keep it immutable, no need to |
| * bother with alignment. |
| */ |
| acpi_align_size(tables->table_data, 0x1000); |
| |
| acpi_align_size(tables->linker, 0x1000); |
| |
| /* Cleanup memory that's no longer used. */ |
| g_array_free(table_offsets, true); |
| } |
| |
| static void 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 = 1; |
| |
| acpi_build_tables_init(&tables); |
| |
| acpi_build(build_state->guest_info, &tables); |
| |
| assert(acpi_data_len(tables.table_data) == build_state->table_size); |
| memcpy(build_state->table_ram, tables.table_data->data, |
| build_state->table_size); |
| |
| acpi_build_tables_cleanup(&tables, true); |
| } |
| |
| static void acpi_build_reset(void *build_opaque) |
| { |
| AcpiBuildState *build_state = build_opaque; |
| build_state->patched = 0; |
| } |
| |
| static void *acpi_add_rom_blob(AcpiBuildState *build_state, GArray *blob, |
| const char *name) |
| { |
| return rom_add_blob(name, blob->data, acpi_data_len(blob), -1, name, |
| acpi_build_update, build_state); |
| } |
| |
| static const VMStateDescription vmstate_acpi_build = { |
| .name = "acpi_build", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT8(patched, AcpiBuildState), |
| VMSTATE_END_OF_LIST() |
| }, |
| }; |
| |
| void acpi_setup(PcGuestInfo *guest_info) |
| { |
| AcpiBuildTables tables; |
| AcpiBuildState *build_state; |
| |
| if (!guest_info->fw_cfg) { |
| ACPI_BUILD_DPRINTF(3, "No fw cfg. Bailing out.\n"); |
| return; |
| } |
| |
| if (!guest_info->has_acpi_build) { |
| ACPI_BUILD_DPRINTF(3, "ACPI build disabled. Bailing out.\n"); |
| return; |
| } |
| |
| if (!acpi_enabled) { |
| ACPI_BUILD_DPRINTF(3, "ACPI disabled. Bailing out.\n"); |
| return; |
| } |
| |
| build_state = g_malloc0(sizeof *build_state); |
| |
| build_state->guest_info = guest_info; |
| |
| acpi_build_tables_init(&tables); |
| acpi_build(build_state->guest_info, &tables); |
| |
| /* Now expose it all to Guest */ |
| build_state->table_ram = acpi_add_rom_blob(build_state, tables.table_data, |
| ACPI_BUILD_TABLE_FILE); |
| build_state->table_size = acpi_data_len(tables.table_data); |
| |
| acpi_add_rom_blob(NULL, tables.linker, "etc/table-loader"); |
| |
| /* |
| * RSDP is small so it's easy to keep it immutable, no need to |
| * bother with ROM blobs. |
| */ |
| fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE, |
| tables.rsdp->data, acpi_data_len(tables.rsdp)); |
| |
| qemu_register_reset(acpi_build_reset, build_state); |
| acpi_build_reset(build_state); |
| vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); |
| |
| /* Cleanup tables but don't free the memory: we track it |
| * in build_state. |
| */ |
| acpi_build_tables_cleanup(&tables, false); |
| } |
