| // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
| /****************************************************************************** |
| * |
| * Module Name: utxfinit - External interfaces for ACPICA initialization |
| * |
| * Copyright (C) 2000 - 2023, Intel Corp. |
| * |
| *****************************************************************************/ |
| |
| #define EXPORT_ACPI_INTERFACES |
| |
| #include <acpi/acpi.h> |
| #include "accommon.h" |
| #include "acevents.h" |
| #include "acnamesp.h" |
| #include "acdebug.h" |
| #include "actables.h" |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME("utxfinit") |
| |
| /* For acpi_exec only */ |
| void ae_do_object_overrides(void); |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_initialize_subsystem |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initializes all global variables. This is the first function |
| * called, so any early initialization belongs here. |
| * |
| ******************************************************************************/ |
| |
| acpi_status ACPI_INIT_FUNCTION acpi_initialize_subsystem(void) |
| { |
| acpi_status status; |
| |
| ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); |
| |
| acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; |
| ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); |
| |
| /* Initialize the OS-Dependent layer */ |
| |
| status = acpi_os_initialize(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); |
| return_ACPI_STATUS(status); |
| } |
| |
| /* Initialize all globals used by the subsystem */ |
| |
| status = acpi_ut_init_globals(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_EXCEPTION((AE_INFO, status, |
| "During initialization of globals")); |
| return_ACPI_STATUS(status); |
| } |
| |
| /* Create the default mutex objects */ |
| |
| status = acpi_ut_mutex_initialize(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_EXCEPTION((AE_INFO, status, |
| "During Global Mutex creation")); |
| return_ACPI_STATUS(status); |
| } |
| |
| /* |
| * Initialize the namespace manager and |
| * the root of the namespace tree |
| */ |
| status = acpi_ns_root_initialize(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_EXCEPTION((AE_INFO, status, |
| "During Namespace initialization")); |
| return_ACPI_STATUS(status); |
| } |
| |
| /* Initialize the global OSI interfaces list with the static names */ |
| |
| status = acpi_ut_initialize_interfaces(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_EXCEPTION((AE_INFO, status, |
| "During OSI interfaces initialization")); |
| return_ACPI_STATUS(status); |
| } |
| |
| return_ACPI_STATUS(AE_OK); |
| } |
| |
| ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem) |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_enable_subsystem |
| * |
| * PARAMETERS: flags - Init/enable Options |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Completes the subsystem initialization including hardware. |
| * Puts system into ACPI mode if it isn't already. |
| * |
| ******************************************************************************/ |
| acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(acpi_enable_subsystem); |
| |
| /* |
| * The early initialization phase is complete. The namespace is loaded, |
| * and we can now support address spaces other than Memory, I/O, and |
| * PCI_Config. |
| */ |
| acpi_gbl_early_initialization = FALSE; |
| |
| /* |
| * Obtain a permanent mapping for the FACS. This is required for the |
| * Global Lock and the Firmware Waking Vector |
| */ |
| if (!(flags & ACPI_NO_FACS_INIT)) { |
| status = acpi_tb_initialize_facs(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_WARNING((AE_INFO, "Could not map the FACS table")); |
| return_ACPI_STATUS(status); |
| } |
| } |
| |
| #if (!ACPI_REDUCED_HARDWARE) |
| |
| /* Enable ACPI mode */ |
| |
| if (!(flags & ACPI_NO_ACPI_ENABLE)) { |
| ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| "[Init] Going into ACPI mode\n")); |
| |
| acpi_gbl_original_mode = acpi_hw_get_mode(); |
| |
| status = acpi_enable(); |
| if (ACPI_FAILURE(status)) { |
| ACPI_WARNING((AE_INFO, "AcpiEnable failed")); |
| return_ACPI_STATUS(status); |
| } |
| } |
| |
| /* |
| * Initialize ACPI Event handling (Fixed and General Purpose) |
| * |
| * Note1: We must have the hardware and events initialized before we can |
| * execute any control methods safely. Any control method can require |
| * ACPI hardware support, so the hardware must be fully initialized before |
| * any method execution! |
| * |
| * Note2: Fixed events are initialized and enabled here. GPEs are |
| * initialized, but cannot be enabled until after the hardware is |
| * completely initialized (SCI and global_lock activated) and the various |
| * initialization control methods are run (_REG, _STA, _INI) on the |
| * entire namespace. |
| */ |
| if (!(flags & ACPI_NO_EVENT_INIT)) { |
| ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| "[Init] Initializing ACPI events\n")); |
| |
| status = acpi_ev_initialize_events(); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| } |
| |
| /* |
| * Install the SCI handler and Global Lock handler. This completes the |
| * hardware initialization. |
| */ |
| if (!(flags & ACPI_NO_HANDLER_INIT)) { |
| ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| "[Init] Installing SCI/GL handlers\n")); |
| |
| status = acpi_ev_install_xrupt_handlers(); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| } |
| #endif /* !ACPI_REDUCED_HARDWARE */ |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_initialize_objects |
| * |
| * PARAMETERS: flags - Init/enable Options |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Completes namespace initialization by initializing device |
| * objects and executing AML code for Regions, buffers, etc. |
| * |
| ******************************************************************************/ |
| acpi_status ACPI_INIT_FUNCTION acpi_initialize_objects(u32 flags) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(acpi_initialize_objects); |
| |
| #ifdef ACPI_OBSOLETE_BEHAVIOR |
| /* |
| * 05/2019: Removed, initialization now happens at both object |
| * creation and table load time |
| */ |
| |
| /* |
| * Initialize the objects that remain uninitialized. This |
| * runs the executable AML that may be part of the |
| * declaration of these objects: operation_regions, buffer_fields, |
| * bank_fields, Buffers, and Packages. |
| */ |
| if (!(flags & ACPI_NO_OBJECT_INIT)) { |
| status = acpi_ns_initialize_objects(); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| } |
| #endif |
| |
| /* |
| * Initialize all device/region objects in the namespace. This runs |
| * the device _STA and _INI methods and region _REG methods. |
| */ |
| if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) { |
| status = acpi_ns_initialize_devices(flags); |
| if (ACPI_FAILURE(status)) { |
| return_ACPI_STATUS(status); |
| } |
| } |
| |
| /* |
| * Empty the caches (delete the cached objects) on the assumption that |
| * the table load filled them up more than they will be at runtime -- |
| * thus wasting non-paged memory. |
| */ |
| status = acpi_purge_cached_objects(); |
| |
| acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; |
| return_ACPI_STATUS(status); |
| } |
| |
| ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects) |