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256 lines
7.0 KiB
256 lines
7.0 KiB
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
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/****************************************************************************** |
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* |
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* Module Name: utxfinit - External interfaces for ACPICA initialization |
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* |
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* Copyright (C) 2000 - 2021, Intel Corp. |
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* |
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*****************************************************************************/ |
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#define EXPORT_ACPI_INTERFACES |
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#include <acpi/acpi.h> |
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#include "accommon.h" |
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#include "acevents.h" |
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#include "acnamesp.h" |
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#include "acdebug.h" |
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#include "actables.h" |
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#define _COMPONENT ACPI_UTILITIES |
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ACPI_MODULE_NAME("utxfinit") |
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/* For acpi_exec only */ |
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void ae_do_object_overrides(void); |
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/******************************************************************************* |
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* |
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* FUNCTION: acpi_initialize_subsystem |
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* |
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* PARAMETERS: None |
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* |
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* RETURN: Status |
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* |
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* DESCRIPTION: Initializes all global variables. This is the first function |
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* called, so any early initialization belongs here. |
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* |
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******************************************************************************/ |
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acpi_status ACPI_INIT_FUNCTION acpi_initialize_subsystem(void) |
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{ |
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acpi_status status; |
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ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); |
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acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; |
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ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); |
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/* Initialize the OS-Dependent layer */ |
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status = acpi_os_initialize(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); |
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return_ACPI_STATUS(status); |
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} |
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/* Initialize all globals used by the subsystem */ |
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status = acpi_ut_init_globals(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_EXCEPTION((AE_INFO, status, |
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"During initialization of globals")); |
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return_ACPI_STATUS(status); |
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} |
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/* Create the default mutex objects */ |
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status = acpi_ut_mutex_initialize(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_EXCEPTION((AE_INFO, status, |
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"During Global Mutex creation")); |
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return_ACPI_STATUS(status); |
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} |
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/* |
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* Initialize the namespace manager and |
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* the root of the namespace tree |
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*/ |
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status = acpi_ns_root_initialize(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_EXCEPTION((AE_INFO, status, |
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"During Namespace initialization")); |
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return_ACPI_STATUS(status); |
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} |
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/* Initialize the global OSI interfaces list with the static names */ |
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status = acpi_ut_initialize_interfaces(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_EXCEPTION((AE_INFO, status, |
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"During OSI interfaces initialization")); |
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return_ACPI_STATUS(status); |
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} |
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return_ACPI_STATUS(AE_OK); |
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} |
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ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem) |
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/******************************************************************************* |
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* |
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* FUNCTION: acpi_enable_subsystem |
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* |
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* PARAMETERS: flags - Init/enable Options |
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* |
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* RETURN: Status |
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* |
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* DESCRIPTION: Completes the subsystem initialization including hardware. |
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* Puts system into ACPI mode if it isn't already. |
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* |
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******************************************************************************/ |
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acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags) |
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{ |
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acpi_status status = AE_OK; |
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ACPI_FUNCTION_TRACE(acpi_enable_subsystem); |
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/* |
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* The early initialization phase is complete. The namespace is loaded, |
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* and we can now support address spaces other than Memory, I/O, and |
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* PCI_Config. |
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*/ |
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acpi_gbl_early_initialization = FALSE; |
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#if (!ACPI_REDUCED_HARDWARE) |
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/* Enable ACPI mode */ |
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if (!(flags & ACPI_NO_ACPI_ENABLE)) { |
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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"[Init] Going into ACPI mode\n")); |
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acpi_gbl_original_mode = acpi_hw_get_mode(); |
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status = acpi_enable(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_WARNING((AE_INFO, "AcpiEnable failed")); |
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return_ACPI_STATUS(status); |
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} |
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} |
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/* |
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* Obtain a permanent mapping for the FACS. This is required for the |
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* Global Lock and the Firmware Waking Vector |
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*/ |
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if (!(flags & ACPI_NO_FACS_INIT)) { |
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status = acpi_tb_initialize_facs(); |
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if (ACPI_FAILURE(status)) { |
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ACPI_WARNING((AE_INFO, "Could not map the FACS table")); |
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return_ACPI_STATUS(status); |
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} |
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} |
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/* |
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* Initialize ACPI Event handling (Fixed and General Purpose) |
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* |
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* Note1: We must have the hardware and events initialized before we can |
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* execute any control methods safely. Any control method can require |
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* ACPI hardware support, so the hardware must be fully initialized before |
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* any method execution! |
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* |
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* Note2: Fixed events are initialized and enabled here. GPEs are |
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* initialized, but cannot be enabled until after the hardware is |
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* completely initialized (SCI and global_lock activated) and the various |
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* initialization control methods are run (_REG, _STA, _INI) on the |
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* entire namespace. |
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*/ |
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if (!(flags & ACPI_NO_EVENT_INIT)) { |
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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"[Init] Initializing ACPI events\n")); |
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status = acpi_ev_initialize_events(); |
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if (ACPI_FAILURE(status)) { |
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return_ACPI_STATUS(status); |
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} |
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} |
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/* |
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* Install the SCI handler and Global Lock handler. This completes the |
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* hardware initialization. |
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*/ |
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if (!(flags & ACPI_NO_HANDLER_INIT)) { |
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
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"[Init] Installing SCI/GL handlers\n")); |
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status = acpi_ev_install_xrupt_handlers(); |
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if (ACPI_FAILURE(status)) { |
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return_ACPI_STATUS(status); |
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} |
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} |
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#endif /* !ACPI_REDUCED_HARDWARE */ |
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return_ACPI_STATUS(status); |
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} |
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ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) |
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/******************************************************************************* |
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* |
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* FUNCTION: acpi_initialize_objects |
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* |
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* PARAMETERS: flags - Init/enable Options |
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* |
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* RETURN: Status |
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* |
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* DESCRIPTION: Completes namespace initialization by initializing device |
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* objects and executing AML code for Regions, buffers, etc. |
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* |
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******************************************************************************/ |
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acpi_status ACPI_INIT_FUNCTION acpi_initialize_objects(u32 flags) |
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{ |
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acpi_status status = AE_OK; |
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ACPI_FUNCTION_TRACE(acpi_initialize_objects); |
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#ifdef ACPI_OBSOLETE_BEHAVIOR |
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/* |
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* 05/2019: Removed, initialization now happens at both object |
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* creation and table load time |
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*/ |
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/* |
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* Initialize the objects that remain uninitialized. This |
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* runs the executable AML that may be part of the |
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* declaration of these objects: operation_regions, buffer_fields, |
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* bank_fields, Buffers, and Packages. |
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*/ |
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if (!(flags & ACPI_NO_OBJECT_INIT)) { |
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status = acpi_ns_initialize_objects(); |
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if (ACPI_FAILURE(status)) { |
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return_ACPI_STATUS(status); |
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} |
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} |
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#endif |
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/* |
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* Initialize all device/region objects in the namespace. This runs |
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* the device _STA and _INI methods and region _REG methods. |
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*/ |
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if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) { |
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status = acpi_ns_initialize_devices(flags); |
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if (ACPI_FAILURE(status)) { |
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return_ACPI_STATUS(status); |
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} |
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} |
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/* |
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* Empty the caches (delete the cached objects) on the assumption that |
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* the table load filled them up more than they will be at runtime -- |
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* thus wasting non-paged memory. |
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*/ |
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status = acpi_purge_cached_objects(); |
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acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; |
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return_ACPI_STATUS(status); |
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} |
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ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects)
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