/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Support for generating ACPI tables and passing them to Guests * * Copyright (C) 2021 Loongson Technology Corporation Limited */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/error-report.h" #include "qemu/bitmap.h" #include "hw/pci/pci.h" #include "hw/core/cpu.h" #include "target/loongarch/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 "migration/vmstate.h" #include "hw/mem/memory-device.h" #include "sysemu/reset.h" /* Supported chipsets: */ #include "hw/pci-host/ls7a.h" #include "hw/loongarch/virt.h" #include "hw/acpi/utils.h" #include "hw/acpi/pci.h" #include "qom/qom-qobject.h" #include "hw/acpi/generic_event_device.h" #include "hw/pci-host/gpex.h" #include "sysemu/tpm.h" #include "hw/platform-bus.h" #include "hw/acpi/aml-build.h" #define ACPI_BUILD_ALIGN_SIZE 0x1000 #define ACPI_BUILD_TABLE_SIZE 0x20000 #ifdef DEBUG_ACPI_BUILD #define ACPI_BUILD_DPRINTF(fmt, ...) \ do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) #else #define ACPI_BUILD_DPRINTF(fmt, ...) #endif /* build FADT */ static void init_common_fadt_data(AcpiFadtData *data) { AcpiFadtData fadt = { /* ACPI 5.0: 4.1 Hardware-Reduced ACPI */ .rev = 5, .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) | (1 << ACPI_FADT_F_RESET_REG_SUP)), /* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */ .sleep_ctl = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_SLEEP_CTL, }, .sleep_sts = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_SLEEP_STS, }, /* ACPI 5.0: 4.8.3.6 Reset Register */ .reset_reg = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = VIRT_GED_REG_ADDR + ACPI_GED_REG_RESET, }, .reset_val = ACPI_GED_RESET_VALUE, }; *data = fadt; } 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)); } /* build FACS */ static void build_facs(GArray *table_data) { const char *sig = "FACS"; const uint8_t reserved[40] = {}; g_array_append_vals(table_data, sig, 4); /* Signature */ build_append_int_noprefix(table_data, 64, 4); /* Length */ build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */ build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */ build_append_int_noprefix(table_data, 0, 4); /* Global Lock */ build_append_int_noprefix(table_data, 0, 4); /* Flags */ g_array_append_vals(table_data, reserved, 40); /* Reserved */ } /* build MADT */ static void build_madt(GArray *table_data, BIOSLinker *linker, LoongArchMachineState *lams) { MachineState *ms = MACHINE(lams); int i; AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = lams->oem_id, .oem_table_id = lams->oem_table_id }; acpi_table_begin(&table, table_data); /* Local APIC Address */ build_append_int_noprefix(table_data, 0, 4); build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */ for (i = 0; i < ms->smp.cpus; i++) { /* Processor Core Interrupt Controller Structure */ build_append_int_noprefix(table_data, 17, 1); /* Type */ build_append_int_noprefix(table_data, 15, 1); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Version */ build_append_int_noprefix(table_data, i + 1, 4); /* ACPI Processor ID */ build_append_int_noprefix(table_data, i, 4); /* Core ID */ build_append_int_noprefix(table_data, 1, 4); /* Flags */ } /* Extend I/O Interrupt Controller Structure */ build_append_int_noprefix(table_data, 20, 1); /* Type */ build_append_int_noprefix(table_data, 13, 1); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Version */ build_append_int_noprefix(table_data, 3, 1); /* Cascade */ build_append_int_noprefix(table_data, 0, 1); /* Node */ build_append_int_noprefix(table_data, 0xffff, 8); /* Node map */ /* MSI Interrupt Controller Structure */ build_append_int_noprefix(table_data, 21, 1); /* Type */ build_append_int_noprefix(table_data, 19, 1); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Version */ build_append_int_noprefix(table_data, VIRT_PCH_MSI_ADDR_LOW, 8);/* Address */ build_append_int_noprefix(table_data, 0x40, 4); /* Start */ build_append_int_noprefix(table_data, 0xc0, 4); /* Count */ /* Bridge I/O Interrupt Controller Structure */ build_append_int_noprefix(table_data, 22, 1); /* Type */ build_append_int_noprefix(table_data, 17, 1); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Version */ build_append_int_noprefix(table_data, VIRT_PCH_REG_BASE, 8);/* Address */ build_append_int_noprefix(table_data, 0x1000, 2); /* Size */ build_append_int_noprefix(table_data, 0, 2); /* Id */ build_append_int_noprefix(table_data, 0x40, 2); /* Base */ acpi_table_end(linker, &table); } /* build SRAT */ static void build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) { uint64_t i; LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); MachineState *ms = MACHINE(lams); AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = lams->oem_id, .oem_table_id = lams->oem_table_id }; acpi_table_begin(&table, table_data); build_append_int_noprefix(table_data, 1, 4); /* Reserved */ build_append_int_noprefix(table_data, 0, 8); /* Reserved */ for (i = 0; i < ms->smp.cpus; ++i) { /* Processor Local APIC/SAPIC Affinity Structure */ build_append_int_noprefix(table_data, 0, 1); /* Type */ build_append_int_noprefix(table_data, 16, 1); /* Length */ /* Proximity Domain [7:0] */ build_append_int_noprefix(table_data, 0, 1); build_append_int_noprefix(table_data, i, 1); /* APIC ID */ /* Flags, Table 5-36 */ build_append_int_noprefix(table_data, 1, 4); build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */ /* Proximity Domain [31:8] */ build_append_int_noprefix(table_data, 0, 3); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } build_srat_memory(table_data, VIRT_LOWMEM_BASE, VIRT_LOWMEM_SIZE, 0, MEM_AFFINITY_ENABLED); build_srat_memory(table_data, VIRT_HIGHMEM_BASE, machine->ram_size - VIRT_LOWMEM_SIZE, 0, MEM_AFFINITY_ENABLED); if (ms->device_memory) { build_srat_memory(table_data, ms->device_memory->base, memory_region_size(&ms->device_memory->mr), 0, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } acpi_table_end(linker, &table); } typedef struct AcpiBuildState { /* Copy of table in RAM (for patching). */ MemoryRegion *table_mr; /* Is table patched? */ uint8_t patched; void *rsdp; MemoryRegion *rsdp_mr; MemoryRegion *linker_mr; } AcpiBuildState; static void build_uart_device_aml(Aml *table) { Aml *dev; Aml *crs; Aml *pkg0, *pkg1, *pkg2; uint32_t uart_irq = VIRT_UART_IRQ; Aml *scope = aml_scope("_SB"); dev = aml_device("COMA"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0501"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); aml_append(dev, aml_name_decl("_CCA", aml_int(1))); crs = aml_resource_template(); aml_append(crs, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0, VIRT_UART_BASE, VIRT_UART_BASE + VIRT_UART_SIZE - 1, 0, VIRT_UART_SIZE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, &uart_irq, 1)); aml_append(dev, aml_name_decl("_CRS", crs)); pkg0 = aml_package(0x2); aml_append(pkg0, aml_int(0x05F5E100)); aml_append(pkg0, aml_string("clock-frenquency")); pkg1 = aml_package(0x1); aml_append(pkg1, pkg0); pkg2 = aml_package(0x2); aml_append(pkg2, aml_touuid("DAFFD814-6EBA-4D8C-8A91-BC9BBF4AA301")); aml_append(pkg2, pkg1); aml_append(dev, aml_name_decl("_DSD", pkg2)); aml_append(scope, dev); aml_append(table, scope); } static void build_la_ged_aml(Aml *dsdt, MachineState *machine) { uint32_t event; LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); build_ged_aml(dsdt, "\\_SB."GED_DEVICE, HOTPLUG_HANDLER(lams->acpi_ged), VIRT_SCI_IRQ, AML_SYSTEM_MEMORY, VIRT_GED_EVT_ADDR); event = object_property_get_uint(OBJECT(lams->acpi_ged), "ged-event", &error_abort); if (event & ACPI_GED_MEM_HOTPLUG_EVT) { build_memory_hotplug_aml(dsdt, machine->ram_slots, "\\_SB", NULL, AML_SYSTEM_MEMORY, VIRT_GED_MEM_ADDR); } acpi_dsdt_add_power_button(dsdt); } static void build_pci_device_aml(Aml *scope, LoongArchMachineState *lams) { struct GPEXConfig cfg = { .mmio64.base = VIRT_PCI_MEM_BASE, .mmio64.size = VIRT_PCI_MEM_SIZE, .pio.base = VIRT_PCI_IO_BASE, .pio.size = VIRT_PCI_IO_SIZE, .ecam.base = VIRT_PCI_CFG_BASE, .ecam.size = VIRT_PCI_CFG_SIZE, .irq = VIRT_GSI_BASE + VIRT_DEVICE_IRQS, .bus = lams->pci_bus, }; acpi_dsdt_add_gpex(scope, &cfg); } static void build_flash_aml(Aml *scope, LoongArchMachineState *lams) { Aml *dev, *crs; hwaddr flash_base = VIRT_FLASH_BASE; hwaddr flash_size = VIRT_FLASH_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(flash_base, flash_size, AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } #ifdef CONFIG_TPM static void acpi_dsdt_add_tpm(Aml *scope, LoongArchMachineState *vms) { PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); hwaddr pbus_base = VIRT_PLATFORM_BUS_BASEADDRESS; SysBusDevice *sbdev = SYS_BUS_DEVICE(tpm_find()); MemoryRegion *sbdev_mr; hwaddr tpm_base; if (!sbdev) { return; } tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0); assert(tpm_base != -1); tpm_base += pbus_base; sbdev_mr = sysbus_mmio_get_region(sbdev, 0); Aml *dev = aml_device("TPM0"); aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); aml_append(dev, aml_name_decl("_UID", aml_int(0))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(tpm_base, (uint32_t)memory_region_size(sbdev_mr), AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } #endif /* build DSDT */ static void build_dsdt(GArray *table_data, BIOSLinker *linker, MachineState *machine) { Aml *dsdt, *scope, *pkg; LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = lams->oem_id, .oem_table_id = lams->oem_table_id }; acpi_table_begin(&table, table_data); dsdt = init_aml_allocator(); build_uart_device_aml(dsdt); build_pci_device_aml(dsdt, lams); build_la_ged_aml(dsdt, machine); build_flash_aml(dsdt, lams); #ifdef CONFIG_TPM acpi_dsdt_add_tpm(dsdt, lams); #endif /* System State Package */ scope = aml_scope("\\"); pkg = aml_package(4); aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5)); aml_append(pkg, aml_int(0)); /* ignored */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(scope, aml_name_decl("_S5", pkg)); 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); acpi_table_end(linker, &table); free_aml_allocator(); } static void acpi_build(AcpiBuildTables *tables, MachineState *machine) { LoongArchMachineState *lams = LOONGARCH_MACHINE(machine); GArray *table_offsets; AcpiFadtData fadt_data; unsigned facs, rsdt, dsdt; uint8_t *u; GArray *tables_blob = tables->table_data; init_common_fadt_data(&fadt_data); table_offsets = g_array_new(false, true, sizeof(uint32_t)); ACPI_BUILD_DPRINTF("init ACPI tables\n"); bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, tables_blob, 64, false); /* * FACS is pointed to by FADT. * We place it first since it's the only table that has alignment * requirements. */ facs = tables_blob->len; build_facs(tables_blob); /* DSDT is pointed to by FADT */ dsdt = tables_blob->len; build_dsdt(tables_blob, tables->linker, machine); /* ACPI tables pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); fadt_data.facs_tbl_offset = &facs; fadt_data.dsdt_tbl_offset = &dsdt; fadt_data.xdsdt_tbl_offset = &dsdt; build_fadt(tables_blob, tables->linker, &fadt_data, lams->oem_id, lams->oem_table_id); acpi_add_table(table_offsets, tables_blob); build_madt(tables_blob, tables->linker, lams); acpi_add_table(table_offsets, tables_blob); build_srat(tables_blob, tables->linker, machine); acpi_add_table(table_offsets, tables_blob); { AcpiMcfgInfo mcfg = { .base = cpu_to_le64(VIRT_PCI_CFG_BASE), .size = cpu_to_le64(VIRT_PCI_CFG_SIZE), }; build_mcfg(tables_blob, tables->linker, &mcfg, lams->oem_id, lams->oem_table_id); } #ifdef CONFIG_TPM /* TPM info */ if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) { acpi_add_table(table_offsets, tables_blob); build_tpm2(tables_blob, tables->linker, tables->tcpalog, lams->oem_id, lams->oem_table_id); } #endif /* 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_blob); g_array_append_vals(tables_blob, u, len); } /* RSDT is pointed to by RSDP */ rsdt = tables_blob->len; build_rsdt(tables_blob, tables->linker, table_offsets, lams->oem_id, lams->oem_table_id); /* RSDP is in FSEG memory, so allocate it separately */ { AcpiRsdpData rsdp_data = { .revision = 0, .oem_id = lams->oem_id, .xsdt_tbl_offset = NULL, .rsdt_tbl_offset = &rsdt, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); } /* * The align size is 128, warn if 64k is not enough therefore * the align size could be resized. */ if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { warn_report("ACPI table size %u exceeds %d bytes," " migration may not work", tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); error_printf("Try removing CPUs, NUMA nodes, memory slots" " or PCI bridges."); } acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); /* Cleanup memory that's no longer used. */ g_array_free(table_offsets, true); } static void acpi_ram_update(MemoryRegion *mr, GArray *data) { uint32_t size = acpi_data_len(data); /* * Make sure RAM size is correct - in case it got changed * e.g. by migration */ memory_region_ram_resize(mr, size, &error_abort); memcpy(memory_region_get_ram_ptr(mr), data->data, size); memory_region_set_dirty(mr, 0, size); } static void acpi_build_update(void *build_opaque) { AcpiBuildState *build_state = build_opaque; AcpiBuildTables tables; /* No state to update or already patched? Nothing to do. */ if (!build_state || build_state->patched) { return; } build_state->patched = 1; acpi_build_tables_init(&tables); acpi_build(&tables, MACHINE(qdev_get_machine())); acpi_ram_update(build_state->table_mr, tables.table_data); acpi_ram_update(build_state->rsdp_mr, tables.rsdp); acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); acpi_build_tables_cleanup(&tables, true); } static void acpi_build_reset(void *build_opaque) { AcpiBuildState *build_state = build_opaque; build_state->patched = 0; } static const VMStateDescription vmstate_acpi_build = { .name = "acpi_build", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_UINT8(patched, AcpiBuildState), VMSTATE_END_OF_LIST() }, }; void loongarch_acpi_setup(LoongArchMachineState *lams) { AcpiBuildTables tables; AcpiBuildState *build_state; if (!lams->fw_cfg) { ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); return; } if (!loongarch_is_acpi_enabled(lams)) { ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); return; } build_state = g_malloc0(sizeof *build_state); acpi_build_tables_init(&tables); acpi_build(&tables, MACHINE(lams)); /* Now expose it all to Guest */ build_state->table_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.table_data, ACPI_BUILD_TABLE_FILE); assert(build_state->table_mr != NULL); build_state->linker_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.rsdp, ACPI_BUILD_RSDP_FILE); 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); }