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$subject says all. Can be controlled using -M microvm,acpi=on/off. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Message-id: 20200915120909.20838-9-kraxel@redhat.compull/99/head
Gerd Hoffmann
6 years ago
6 changed files with 246 additions and 1 deletions
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/* Support for generating ACPI tables and passing them to Guests
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* |
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* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> |
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* Copyright (C) 2006 Fabrice Bellard |
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* Copyright (C) 2013 Red Hat Inc |
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* |
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* Author: Michael S. Tsirkin <mst@redhat.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include "qemu/osdep.h" |
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#include "qapi/error.h" |
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#include "exec/memory.h" |
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#include "hw/acpi/acpi.h" |
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#include "hw/acpi/aml-build.h" |
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#include "hw/acpi/bios-linker-loader.h" |
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#include "hw/acpi/generic_event_device.h" |
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#include "hw/acpi/utils.h" |
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#include "hw/boards.h" |
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#include "hw/i386/fw_cfg.h" |
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#include "hw/i386/microvm.h" |
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#include "acpi-common.h" |
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#include "acpi-microvm.h" |
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static void |
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build_dsdt_microvm(GArray *table_data, BIOSLinker *linker, |
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MicrovmMachineState *mms) |
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{ |
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X86MachineState *x86ms = X86_MACHINE(mms); |
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Aml *dsdt, *sb_scope, *scope, *pkg; |
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bool ambiguous; |
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Object *isabus; |
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isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous); |
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assert(isabus); |
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assert(!ambiguous); |
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dsdt = init_aml_allocator(); |
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/* Reserve space for header */ |
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acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader)); |
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sb_scope = aml_scope("_SB"); |
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fw_cfg_add_acpi_dsdt(sb_scope, x86ms->fw_cfg); |
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isa_build_aml(ISA_BUS(isabus), sb_scope); |
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build_ged_aml(sb_scope, GED_DEVICE, HOTPLUG_HANDLER(mms->acpi_dev), |
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GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE); |
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acpi_dsdt_add_power_button(sb_scope); |
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aml_append(dsdt, sb_scope); |
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/* ACPI 5.0: Table 7-209 System State Package */ |
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scope = aml_scope("\\"); |
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pkg = aml_package(4); |
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aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5)); |
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aml_append(pkg, aml_int(0)); /* ignored */ |
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aml_append(pkg, aml_int(0)); /* reserved */ |
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aml_append(pkg, aml_int(0)); /* reserved */ |
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aml_append(scope, aml_name_decl("_S5", pkg)); |
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aml_append(dsdt, scope); |
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/* copy AML table into ACPI tables blob and patch header there */ |
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g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); |
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build_header(linker, table_data, |
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(void *)(table_data->data + table_data->len - dsdt->buf->len), |
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"DSDT", dsdt->buf->len, 2, NULL, NULL); |
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free_aml_allocator(); |
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} |
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static void acpi_build_microvm(AcpiBuildTables *tables, |
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MicrovmMachineState *mms) |
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{ |
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MachineState *machine = MACHINE(mms); |
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GArray *table_offsets; |
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GArray *tables_blob = tables->table_data; |
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unsigned dsdt, xsdt; |
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AcpiFadtData pmfadt = { |
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/* ACPI 5.0: 4.1 Hardware-Reduced ACPI */ |
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.rev = 5, |
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.flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) | |
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(1 << ACPI_FADT_F_RESET_REG_SUP)), |
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/* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */ |
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.sleep_ctl = { |
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.space_id = AML_AS_SYSTEM_MEMORY, |
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.bit_width = 8, |
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_CTL, |
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}, |
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.sleep_sts = { |
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.space_id = AML_AS_SYSTEM_MEMORY, |
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.bit_width = 8, |
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_STS, |
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}, |
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/* ACPI 5.0: 4.8.3.6 Reset Register */ |
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.reset_reg = { |
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.space_id = AML_AS_SYSTEM_MEMORY, |
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.bit_width = 8, |
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_RESET, |
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}, |
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.reset_val = ACPI_GED_RESET_VALUE, |
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}; |
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table_offsets = g_array_new(false, true /* clear */, |
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sizeof(uint32_t)); |
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bios_linker_loader_alloc(tables->linker, |
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ACPI_BUILD_TABLE_FILE, tables_blob, |
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64 /* Ensure FACS is aligned */, |
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false /* high memory */); |
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dsdt = tables_blob->len; |
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build_dsdt_microvm(tables_blob, tables->linker, mms); |
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pmfadt.dsdt_tbl_offset = &dsdt; |
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pmfadt.xdsdt_tbl_offset = &dsdt; |
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acpi_add_table(table_offsets, tables_blob); |
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build_fadt(tables_blob, tables->linker, &pmfadt, NULL, NULL); |
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acpi_add_table(table_offsets, tables_blob); |
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acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine), |
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mms->acpi_dev, false); |
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xsdt = tables_blob->len; |
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build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL); |
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/* RSDP is in FSEG memory, so allocate it separately */ |
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{ |
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AcpiRsdpData rsdp_data = { |
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/* ACPI 2.0: 5.2.4.3 RSDP Structure */ |
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.revision = 2, /* xsdt needs v2 */ |
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.oem_id = ACPI_BUILD_APPNAME6, |
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.xsdt_tbl_offset = &xsdt, |
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.rsdt_tbl_offset = NULL, |
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}; |
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build_rsdp(tables->rsdp, tables->linker, &rsdp_data); |
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} |
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/* Cleanup memory that's no longer used. */ |
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g_array_free(table_offsets, true); |
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} |
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static void acpi_build_no_update(void *build_opaque) |
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{ |
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/* nothing, microvm tables don't change at runtime */ |
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} |
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void acpi_setup_microvm(MicrovmMachineState *mms) |
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{ |
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X86MachineState *x86ms = X86_MACHINE(mms); |
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AcpiBuildTables tables; |
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assert(x86ms->fw_cfg); |
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if (!x86_machine_is_acpi_enabled(x86ms)) { |
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return; |
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} |
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acpi_build_tables_init(&tables); |
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acpi_build_microvm(&tables, mms); |
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/* Now expose it all to Guest */ |
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acpi_add_rom_blob(acpi_build_no_update, NULL, |
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tables.table_data, |
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ACPI_BUILD_TABLE_FILE, |
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ACPI_BUILD_TABLE_MAX_SIZE); |
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acpi_add_rom_blob(acpi_build_no_update, NULL, |
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tables.linker->cmd_blob, |
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"etc/table-loader", 0); |
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acpi_add_rom_blob(acpi_build_no_update, NULL, |
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tables.rsdp, |
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ACPI_BUILD_RSDP_FILE, 0); |
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acpi_build_tables_cleanup(&tables, false); |
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} |
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@ -0,0 +1,8 @@ |
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#ifndef HW_I386_ACPI_MICROVM_H |
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#define HW_I386_ACPI_MICROVM_H |
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#include "hw/i386/microvm.h" |
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void acpi_setup_microvm(MicrovmMachineState *mms); |
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#endif |
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