1 /******************************************************************************
3 * Module Name: utxfinit - External interfaces for ACPICA initialization
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************/
116 #define EXPORT_ACPI_INTERFACES
119 #include "accommon.h"
120 #include "acevents.h"
121 #include "acnamesp.h"
123 #include "actables.h"
125 #define _COMPONENT ACPI_UTILITIES
126 ACPI_MODULE_NAME ("utxfinit")
128 /* For AcpiExec only */
130 AeDoObjectOverrides (
134 /*******************************************************************************
136 * FUNCTION: AcpiInitializeSubsystem
142 * DESCRIPTION: Initializes all global variables. This is the first function
143 * called, so any early initialization belongs here.
145 ******************************************************************************/
148 AcpiInitializeSubsystem (
154 ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem);
157 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE;
158 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ());
160 /* Initialize the OS-Dependent layer */
162 Status = AcpiOsInitialize ();
163 if (ACPI_FAILURE (Status))
165 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization"));
166 return_ACPI_STATUS (Status);
169 /* Initialize all globals used by the subsystem */
171 Status = AcpiUtInitGlobals ();
172 if (ACPI_FAILURE (Status))
174 ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals"));
175 return_ACPI_STATUS (Status);
178 /* Create the default mutex objects */
180 Status = AcpiUtMutexInitialize ();
181 if (ACPI_FAILURE (Status))
183 ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation"));
184 return_ACPI_STATUS (Status);
188 * Initialize the namespace manager and
189 * the root of the namespace tree
191 Status = AcpiNsRootInitialize ();
192 if (ACPI_FAILURE (Status))
194 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization"));
195 return_ACPI_STATUS (Status);
198 /* Initialize the global OSI interfaces list with the static names */
200 Status = AcpiUtInitializeInterfaces ();
201 if (ACPI_FAILURE (Status))
203 ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization"));
204 return_ACPI_STATUS (Status);
207 /* If configured, initialize the AML debugger */
210 Status = AcpiDbInitialize ();
211 if (ACPI_FAILURE (Status))
213 ACPI_EXCEPTION ((AE_INFO, Status, "During Debugger initialization"));
214 return_ACPI_STATUS (Status);
218 return_ACPI_STATUS (AE_OK);
221 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem)
224 /*******************************************************************************
226 * FUNCTION: AcpiEnableSubsystem
228 * PARAMETERS: Flags - Init/enable Options
232 * DESCRIPTION: Completes the subsystem initialization including hardware.
233 * Puts system into ACPI mode if it isn't already.
235 ******************************************************************************/
238 AcpiEnableSubsystem (
241 ACPI_STATUS Status = AE_OK;
244 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem);
247 #if (!ACPI_REDUCED_HARDWARE)
249 /* Enable ACPI mode */
251 if (!(Flags & ACPI_NO_ACPI_ENABLE))
253 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n"));
255 AcpiGbl_OriginalMode = AcpiHwGetMode();
257 Status = AcpiEnable ();
258 if (ACPI_FAILURE (Status))
260 ACPI_WARNING ((AE_INFO, "AcpiEnable failed"));
261 return_ACPI_STATUS (Status);
266 * Obtain a permanent mapping for the FACS. This is required for the
267 * Global Lock and the Firmware Waking Vector
269 Status = AcpiTbInitializeFacs ();
270 if (ACPI_FAILURE (Status))
272 ACPI_WARNING ((AE_INFO, "Could not map the FACS table"));
273 return_ACPI_STATUS (Status);
276 #endif /* !ACPI_REDUCED_HARDWARE */
279 * Install the default OpRegion handlers. These are installed unless
280 * other handlers have already been installed via the
281 * InstallAddressSpaceHandler interface.
283 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
285 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
286 "[Init] Installing default address space handlers\n"));
288 Status = AcpiEvInstallRegionHandlers ();
289 if (ACPI_FAILURE (Status))
291 return_ACPI_STATUS (Status);
295 #if (!ACPI_REDUCED_HARDWARE)
297 * Initialize ACPI Event handling (Fixed and General Purpose)
299 * Note1: We must have the hardware and events initialized before we can
300 * execute any control methods safely. Any control method can require
301 * ACPI hardware support, so the hardware must be fully initialized before
302 * any method execution!
304 * Note2: Fixed events are initialized and enabled here. GPEs are
305 * initialized, but cannot be enabled until after the hardware is
306 * completely initialized (SCI and GlobalLock activated) and the various
307 * initialization control methods are run (_REG, _STA, _INI) on the
310 if (!(Flags & ACPI_NO_EVENT_INIT))
312 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
313 "[Init] Initializing ACPI events\n"));
315 Status = AcpiEvInitializeEvents ();
316 if (ACPI_FAILURE (Status))
318 return_ACPI_STATUS (Status);
323 * Install the SCI handler and Global Lock handler. This completes the
324 * hardware initialization.
326 if (!(Flags & ACPI_NO_HANDLER_INIT))
328 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
329 "[Init] Installing SCI/GL handlers\n"));
331 Status = AcpiEvInstallXruptHandlers ();
332 if (ACPI_FAILURE (Status))
334 return_ACPI_STATUS (Status);
338 #endif /* !ACPI_REDUCED_HARDWARE */
340 return_ACPI_STATUS (Status);
343 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem)
346 /*******************************************************************************
348 * FUNCTION: AcpiInitializeObjects
350 * PARAMETERS: Flags - Init/enable Options
354 * DESCRIPTION: Completes namespace initialization by initializing device
355 * objects and executing AML code for Regions, buffers, etc.
357 ******************************************************************************/
360 AcpiInitializeObjects (
363 ACPI_STATUS Status = AE_OK;
366 ACPI_FUNCTION_TRACE (AcpiInitializeObjects);
370 * Run all _REG methods
372 * Note: Any objects accessed by the _REG methods will be automatically
373 * initialized, even if they contain executable AML (see the call to
374 * AcpiNsInitializeObjects below).
376 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
378 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
379 "[Init] Executing _REG OpRegion methods\n"));
381 Status = AcpiEvInitializeOpRegions ();
382 if (ACPI_FAILURE (Status))
384 return_ACPI_STATUS (Status);
390 * This call implements the "initialization file" option for AcpiExec.
391 * This is the precise point that we want to perform the overrides.
393 AeDoObjectOverrides ();
397 * Execute any module-level code that was detected during the table load
398 * phase. Although illegal since ACPI 2.0, there are many machines that
399 * contain this type of code. Each block of detected executable AML code
400 * outside of any control method is wrapped with a temporary control
401 * method object and placed on a global list. The methods on this list
402 * are executed below.
404 AcpiNsExecModuleCodeList ();
407 * Initialize the objects that remain uninitialized. This runs the
408 * executable AML that may be part of the declaration of these objects:
409 * OperationRegions, BufferFields, Buffers, and Packages.
411 if (!(Flags & ACPI_NO_OBJECT_INIT))
413 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
414 "[Init] Completing Initialization of ACPI Objects\n"));
416 Status = AcpiNsInitializeObjects ();
417 if (ACPI_FAILURE (Status))
419 return_ACPI_STATUS (Status);
424 * Initialize all device objects in the namespace. This runs the device
425 * _STA and _INI methods.
427 if (!(Flags & ACPI_NO_DEVICE_INIT))
429 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
430 "[Init] Initializing ACPI Devices\n"));
432 Status = AcpiNsInitializeDevices ();
433 if (ACPI_FAILURE (Status))
435 return_ACPI_STATUS (Status);
440 * Empty the caches (delete the cached objects) on the assumption that
441 * the table load filled them up more than they will be at runtime --
442 * thus wasting non-paged memory.
444 Status = AcpiPurgeCachedObjects ();
446 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK;
447 return_ACPI_STATUS (Status);
450 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects)