/****************************************************************************** * * Module Name: utxfinit - External interfaces for ACPICA initialization * *****************************************************************************/ /* * Copyright (C) 2000 - 2016, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. */ #define EXPORT_ACPI_INTERFACES #include "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 AcpiExec only */ void AeDoObjectOverrides ( void); /******************************************************************************* * * FUNCTION: AcpiInitializeSubsystem * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Initializes all global variables. This is the first function * called, so any early initialization belongs here. * ******************************************************************************/ ACPI_STATUS AcpiInitializeSubsystem ( void) { ACPI_STATUS Status; ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); /* Initialize the OS-Dependent layer */ Status = AcpiOsInitialize (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization")); return_ACPI_STATUS (Status); } /* Initialize all globals used by the subsystem */ Status = AcpiUtInitGlobals (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals")); return_ACPI_STATUS (Status); } /* Create the default mutex objects */ Status = AcpiUtMutexInitialize (); 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 = AcpiNsRootInitialize (); 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 = AcpiUtInitializeInterfaces (); 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 (AcpiInitializeSubsystem) /******************************************************************************* * * FUNCTION: AcpiEnableSubsystem * * 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 AcpiEnableSubsystem ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); /* * 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. */ AcpiGbl_EarlyInitialization = FALSE; /* * Install the default operation region handlers. These are the * handlers that are defined by the ACPI specification to be * "always accessible" -- namely, SystemMemory, SystemIO, and * PCI_Config. This also means that no _REG methods need to be * run for these address spaces. We need to have these handlers * installed before any AML code can be executed, especially any * module-level code (11/2015). */ if (!AcpiGbl_GroupModuleLevelCode) { Status = AcpiEvInstallRegionHandlers (); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "During Region initialization")); 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")); AcpiGbl_OriginalMode = AcpiHwGetMode(); Status = AcpiEnable (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); return_ACPI_STATUS (Status); } } /* * 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 = AcpiTbInitializeFacs (); if (ACPI_FAILURE (Status)) { ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); 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 GlobalLock 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 = AcpiEvInitializeEvents (); 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 = AcpiEvInstallXruptHandlers (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } #endif /* !ACPI_REDUCED_HARDWARE */ return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem) /******************************************************************************* * * FUNCTION: AcpiInitializeObjects * * 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 AcpiInitializeObjects ( UINT32 Flags) { ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (AcpiInitializeObjects); #ifdef ACPI_EXEC_APP /* * This call implements the "initialization file" option for AcpiExec. * This is the precise point that we want to perform the overrides. */ AeDoObjectOverrides (); #endif /* * Execute any module-level code that was detected during the table load * phase. Although illegal since ACPI 2.0, there are many machines that * contain this type of code. Each block of detected executable AML code * outside of any control method is wrapped with a temporary control * method object and placed on a global list. The methods on this list * are executed below. * * This case executes the module-level code for all tables only after * all of the tables have been loaded. It is a legacy option and is * not compatible with other ACPI implementations. See AcpiNsLoadTable. */ if (AcpiGbl_GroupModuleLevelCode) { AcpiNsExecModuleCodeList (); } /* * Initialize the objects that remain uninitialized. This runs the * executable AML that may be part of the declaration of these objects: * OperationRegions, BufferFields, Buffers, and Packages. */ if (!(Flags & ACPI_NO_OBJECT_INIT)) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Completing Initialization of ACPI Objects\n")); Status = AcpiNsInitializeObjects (); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } } AcpiGbl_NamespaceInitialized = TRUE; /* * 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 = AcpiNsInitializeDevices (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 = AcpiPurgeCachedObjects (); AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; return_ACPI_STATUS (Status); } ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)