/* Support for generating ACPI tables and passing them to Guests * * Copyright (C) 2008-2010 Kevin O'Connor * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2013 Red Hat Inc * * Author: Michael S. Tsirkin * * 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 "acpi-build.h" #include #include #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" #include "hw/isa/isa.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) { unsigned short applesmc_sta_val, *applesmc_sta_off; Object *piix = piix4_pm_find(); Object *lpc = ich9_lpc_find(); assert(!!piix != !!lpc); if (piix) { info->dsdt_code = AcpiDsdtAmlCode; info->dsdt_size = sizeof AcpiDsdtAmlCode; applesmc_sta_off = piix_dsdt_applesmc_sta; } if (lpc) { info->dsdt_code = Q35AcpiDsdtAmlCode; info->dsdt_size = sizeof Q35AcpiDsdtAmlCode; applesmc_sta_off = q35_dsdt_applesmc_sta; } /* Patch in appropriate value for AppleSMC _STA */ applesmc_sta_val = applesmc_find() ? 0x0b : 0x00; *(uint16_t *)(info->dsdt_code + *applesmc_sta_off) = cpu_to_le16(applesmc_sta_val); } 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); }