text: /******************************************************************************
   *
   * Module Name: utxfinit - External interfaces for ACPICA initialization
   *
   *****************************************************************************/
  
  /*
   * Copyright (C) 2000 - 2014, 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 __UTXFINIT_C__
  #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")
  
  
  /*******************************************************************************
   *
   * 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);
      }
  
      /* If configured, initialize the AML debugger */
  
  #ifdef ACPI_DEBUGGER
      Status = AcpiDbInitialize ();
      if (ACPI_FAILURE (Status))
      {
          ACPI_EXCEPTION ((AE_INFO, Status, "During Debugger initialization"));
          return_ACPI_STATUS (Status);
      }
  #endif
  
      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);
  
  
  #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
       */
      Status = AcpiTbInitializeFacs ();
      if (ACPI_FAILURE (Status))
      {
          ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
          return_ACPI_STATUS (Status);
      }
  
  #endif /* !ACPI_REDUCED_HARDWARE */
  
      /*
       * Install the default OpRegion handlers. These are installed unless
       * other handlers have already been installed via the
       * InstallAddressSpaceHandler interface.
       */
      if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
      {
          ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
              "[Init] Installing default address space handlers\n"));
  
          Status = AcpiEvInstallRegionHandlers ();
          if (ACPI_FAILURE (Status))
          {
              return_ACPI_STATUS (Status);
          }
      }
  
  #if (!ACPI_REDUCED_HARDWARE)
      /*
       * 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);
  
  
      /*
       * Run all _REG methods
       *
       * Note: Any objects accessed by the _REG methods will be automatically
       * initialized, even if they contain executable AML (see the call to
       * AcpiNsInitializeObjects below).
       */
      if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
      {
          ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
              "[Init] Executing _REG OpRegion methods\n"));
  
          Status = AcpiEvInitializeOpRegions ();
          if (ACPI_FAILURE (Status))
          {
              return_ACPI_STATUS (Status);
          }
      }
  
      /*
       * 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.
       */
      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);
          }
      }
  
      /*
       * Initialize all device objects in the namespace. This runs the device
       * _STA and _INI methods.
       */
      if (!(Flags & ACPI_NO_DEVICE_INIT))
      {
          ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
              "[Init] Initializing ACPI Devices\n"));
  
          Status = AcpiNsInitializeDevices ();
          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)
  