1 /******************************************************************************
3 * Module Name: utxfinit - External interfaces for ACPICA initialization
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2015, Intel Corp.
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44 #define EXPORT_ACPI_INTERFACES
46 #include <contrib/dev/acpica/include/acpi.h>
47 #include <contrib/dev/acpica/include/accommon.h>
48 #include <contrib/dev/acpica/include/acevents.h>
49 #include <contrib/dev/acpica/include/acnamesp.h>
50 #include <contrib/dev/acpica/include/acdebug.h>
51 #include <contrib/dev/acpica/include/actables.h>
53 #define _COMPONENT ACPI_UTILITIES
54 ACPI_MODULE_NAME ("utxfinit")
56 /* For AcpiExec only */
62 /*******************************************************************************
64 * FUNCTION: AcpiInitializeSubsystem
70 * DESCRIPTION: Initializes all global variables. This is the first function
71 * called, so any early initialization belongs here.
73 ******************************************************************************/
76 AcpiInitializeSubsystem (
82 ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);
85 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
86 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
88 /* Initialize the OS-Dependent layer */
90 Status = AcpiOsInitialize ();
91 if (ACPI_FAILURE (Status))
93 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
94 return_ACPI_STATUS (Status);
97 /* Initialize all globals used by the subsystem */
99 Status = AcpiUtInitGlobals ();
100 if (ACPI_FAILURE (Status))
102 ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
103 return_ACPI_STATUS (Status);
106 /* Create the default mutex objects */
108 Status = AcpiUtMutexInitialize ();
109 if (ACPI_FAILURE (Status))
111 ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
112 return_ACPI_STATUS (Status);
116 * Initialize the namespace manager and
117 * the root of the namespace tree
119 Status = AcpiNsRootInitialize ();
120 if (ACPI_FAILURE (Status))
122 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
123 return_ACPI_STATUS (Status);
126 /* Initialize the global OSI interfaces list with the static names */
128 Status = AcpiUtInitializeInterfaces ();
129 if (ACPI_FAILURE (Status))
131 ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
132 return_ACPI_STATUS (Status);
135 /* If configured, initialize the AML debugger */
138 Status = AcpiDbInitialize ();
139 if (ACPI_FAILURE (Status))
141 ACPI_EXCEPTION ((AE_INFO, Status, "During Debugger initialization"));
142 return_ACPI_STATUS (Status);
146 return_ACPI_STATUS (AE_OK);
149 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem)
152 /*******************************************************************************
154 * FUNCTION: AcpiEnableSubsystem
156 * PARAMETERS: Flags - Init/enable Options
160 * DESCRIPTION: Completes the subsystem initialization including hardware.
161 * Puts system into ACPI mode if it isn't already.
163 ******************************************************************************/
166 AcpiEnableSubsystem (
169 ACPI_STATUS Status = AE_OK;
172 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
175 #if (!ACPI_REDUCED_HARDWARE)
177 /* Enable ACPI mode */
179 if (!(Flags & ACPI_NO_ACPI_ENABLE))
181 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
183 AcpiGbl_OriginalMode = AcpiHwGetMode();
185 Status = AcpiEnable ();
186 if (ACPI_FAILURE (Status))
188 ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
189 return_ACPI_STATUS (Status);
194 * Obtain a permanent mapping for the FACS. This is required for the
195 * Global Lock and the Firmware Waking Vector
197 Status = AcpiTbInitializeFacs ();
198 if (ACPI_FAILURE (Status))
200 ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
201 return_ACPI_STATUS (Status);
204 #endif /* !ACPI_REDUCED_HARDWARE */
207 * Install the default OpRegion handlers. These are installed unless
208 * other handlers have already been installed via the
209 * InstallAddressSpaceHandler interface.
211 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
213 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
214 "[Init] Installing default address space handlers\n"));
216 Status = AcpiEvInstallRegionHandlers ();
217 if (ACPI_FAILURE (Status))
219 return_ACPI_STATUS (Status);
223 #if (!ACPI_REDUCED_HARDWARE)
225 * Initialize ACPI Event handling (Fixed and General Purpose)
227 * Note1: We must have the hardware and events initialized before we can
228 * execute any control methods safely. Any control method can require
229 * ACPI hardware support, so the hardware must be fully initialized before
230 * any method execution!
232 * Note2: Fixed events are initialized and enabled here. GPEs are
233 * initialized, but cannot be enabled until after the hardware is
234 * completely initialized (SCI and GlobalLock activated) and the various
235 * initialization control methods are run (_REG, _STA, _INI) on the
238 if (!(Flags & ACPI_NO_EVENT_INIT))
240 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
241 "[Init] Initializing ACPI events\n"));
243 Status = AcpiEvInitializeEvents ();
244 if (ACPI_FAILURE (Status))
246 return_ACPI_STATUS (Status);
251 * Install the SCI handler and Global Lock handler. This completes the
252 * hardware initialization.
254 if (!(Flags & ACPI_NO_HANDLER_INIT))
256 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
257 "[Init] Installing SCI/GL handlers\n"));
259 Status = AcpiEvInstallXruptHandlers ();
260 if (ACPI_FAILURE (Status))
262 return_ACPI_STATUS (Status);
266 #endif /* !ACPI_REDUCED_HARDWARE */
268 return_ACPI_STATUS (Status);
271 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
274 /*******************************************************************************
276 * FUNCTION: AcpiInitializeObjects
278 * PARAMETERS: Flags - Init/enable Options
282 * DESCRIPTION: Completes namespace initialization by initializing device
283 * objects and executing AML code for Regions, buffers, etc.
285 ******************************************************************************/
288 AcpiInitializeObjects (
291 ACPI_STATUS Status = AE_OK;
294 ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
298 * Run all _REG methods
300 * Note: Any objects accessed by the _REG methods will be automatically
301 * initialized, even if they contain executable AML (see the call to
302 * AcpiNsInitializeObjects below).
304 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
306 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
307 "[Init] Executing _REG OpRegion methods\n"));
309 Status = AcpiEvInitializeOpRegions ();
310 if (ACPI_FAILURE (Status))
312 return_ACPI_STATUS (Status);
318 * This call implements the "initialization file" option for AcpiExec.
319 * This is the precise point that we want to perform the overrides.
321 AeDoObjectOverrides ();
325 * Execute any module-level code that was detected during the table load
326 * phase. Although illegal since ACPI 2.0, there are many machines that
327 * contain this type of code. Each block of detected executable AML code
328 * outside of any control method is wrapped with a temporary control
329 * method object and placed on a global list. The methods on this list
330 * are executed below.
332 AcpiNsExecModuleCodeList ();
335 * Initialize the objects that remain uninitialized. This runs the
336 * executable AML that may be part of the declaration of these objects:
337 * OperationRegions, BufferFields, Buffers, and Packages.
339 if (!(Flags & ACPI_NO_OBJECT_INIT))
341 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
342 "[Init] Completing Initialization of ACPI Objects\n"));
344 Status = AcpiNsInitializeObjects ();
345 if (ACPI_FAILURE (Status))
347 return_ACPI_STATUS (Status);
352 * Initialize all device objects in the namespace. This runs the device
353 * _STA and _INI methods.
355 if (!(Flags & ACPI_NO_DEVICE_INIT))
357 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
358 "[Init] Initializing ACPI Devices\n"));
360 Status = AcpiNsInitializeDevices ();
361 if (ACPI_FAILURE (Status))
363 return_ACPI_STATUS (Status);
368 * Empty the caches (delete the cached objects) on the assumption that
369 * the table load filled them up more than they will be at runtime --
370 * thus wasting non-paged memory.
372 Status = AcpiPurgeCachedObjects ();
374 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
375 return_ACPI_STATUS (Status);
378 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)