/****************************************************************************** * * Module Name: utxfinit - External interfaces for ACPICA initialization * *****************************************************************************/ /* * Copyright (C) 2000 - 2015, 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 #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 __init 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 __init 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; /* * Install the default operation region handlers. These are the * handlers that are defined by the ACPI specification to be * "always accessible" -- namely, system_memory, system_IO, 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). */ status = acpi_ev_install_region_handlers(); 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")); 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); } } /* * 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); } } /* * 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 __init acpi_initialize_objects(u32 flags) { acpi_status status = AE_OK; ACPI_FUNCTION_TRACE(acpi_initialize_objects); /* * 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 * acpi_ns_initialize_objects below). */ if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[Init] Executing _REG OpRegion methods\n")); status = acpi_ev_initialize_op_regions(); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } } #ifdef ACPI_EXEC_APP /* * This call implements the "initialization file" option for acpi_exec. * This is the precise point that we want to perform the overrides. */ ae_do_object_overrides(); #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. */ acpi_ns_exec_module_code_list(); /* * 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, Buffers, and Packages. */ if (!(flags & ACPI_NO_OBJECT_INIT)) { ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[Init] Completing Initialization of ACPI Objects\n")); status = acpi_ns_initialize_objects(); 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 = acpi_ns_initialize_devices(); 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)