1 | /****************************************************************************** |
2 | * |
3 | * Module Name: utxfinit - External interfaces for ACPICA initialization |
4 | * |
5 | *****************************************************************************/ |
6 | |
7 | /* |
8 | * Copyright (C) 2000 - 2016, Intel Corp. |
9 | * All rights reserved. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions, and the following disclaimer, |
16 | * without modification. |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
18 | * substantially similar to the "NO WARRANTY" disclaimer below |
19 | * ("Disclaimer") and any redistribution must be conditioned upon |
20 | * including a substantially similar Disclaimer requirement for further |
21 | * binary redistribution. |
22 | * 3. Neither the names of the above-listed copyright holders nor the names |
23 | * of any contributors may be used to endorse or promote products derived |
24 | * from this software without specific prior written permission. |
25 | * |
26 | * Alternatively, this software may be distributed under the terms of the |
27 | * GNU General Public License ("GPL") version 2 as published by the Free |
28 | * Software Foundation. |
29 | * |
30 | * NO WARRANTY |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
41 | * POSSIBILITY OF SUCH DAMAGES. |
42 | */ |
43 | |
44 | #define EXPORT_ACPI_INTERFACES |
45 | |
46 | #include "acpi.h" |
47 | #include "accommon.h" |
48 | #include "acevents.h" |
49 | #include "acnamesp.h" |
50 | #include "acdebug.h" |
51 | #include "actables.h" |
52 | |
53 | #define _COMPONENT ACPI_UTILITIES |
54 | ACPI_MODULE_NAME ("utxfinit" ) |
55 | |
56 | /* For AcpiExec only */ |
57 | void |
58 | AeDoObjectOverrides ( |
59 | void); |
60 | |
61 | |
62 | /******************************************************************************* |
63 | * |
64 | * FUNCTION: AcpiInitializeSubsystem |
65 | * |
66 | * PARAMETERS: None |
67 | * |
68 | * RETURN: Status |
69 | * |
70 | * DESCRIPTION: Initializes all global variables. This is the first function |
71 | * called, so any early initialization belongs here. |
72 | * |
73 | ******************************************************************************/ |
74 | |
75 | ACPI_STATUS ACPI_INIT_FUNCTION |
76 | AcpiInitializeSubsystem ( |
77 | void) |
78 | { |
79 | ACPI_STATUS Status; |
80 | |
81 | |
82 | ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); |
83 | |
84 | |
85 | AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; |
86 | ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); |
87 | |
88 | /* Initialize the OS-Dependent layer */ |
89 | |
90 | Status = AcpiOsInitialize (); |
91 | if (ACPI_FAILURE (Status)) |
92 | { |
93 | ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization" )); |
94 | return_ACPI_STATUS (Status); |
95 | } |
96 | |
97 | /* Initialize all globals used by the subsystem */ |
98 | |
99 | Status = AcpiUtInitGlobals (); |
100 | if (ACPI_FAILURE (Status)) |
101 | { |
102 | ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals" )); |
103 | return_ACPI_STATUS (Status); |
104 | } |
105 | |
106 | /* Create the default mutex objects */ |
107 | |
108 | Status = AcpiUtMutexInitialize (); |
109 | if (ACPI_FAILURE (Status)) |
110 | { |
111 | ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation" )); |
112 | return_ACPI_STATUS (Status); |
113 | } |
114 | |
115 | /* |
116 | * Initialize the namespace manager and |
117 | * the root of the namespace tree |
118 | */ |
119 | Status = AcpiNsRootInitialize (); |
120 | if (ACPI_FAILURE (Status)) |
121 | { |
122 | ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization" )); |
123 | return_ACPI_STATUS (Status); |
124 | } |
125 | |
126 | /* Initialize the global OSI interfaces list with the static names */ |
127 | |
128 | Status = AcpiUtInitializeInterfaces (); |
129 | if (ACPI_FAILURE (Status)) |
130 | { |
131 | ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization" )); |
132 | return_ACPI_STATUS (Status); |
133 | } |
134 | |
135 | return_ACPI_STATUS (AE_OK); |
136 | } |
137 | |
138 | ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem) |
139 | |
140 | |
141 | /******************************************************************************* |
142 | * |
143 | * FUNCTION: AcpiEnableSubsystem |
144 | * |
145 | * PARAMETERS: Flags - Init/enable Options |
146 | * |
147 | * RETURN: Status |
148 | * |
149 | * DESCRIPTION: Completes the subsystem initialization including hardware. |
150 | * Puts system into ACPI mode if it isn't already. |
151 | * |
152 | ******************************************************************************/ |
153 | |
154 | ACPI_STATUS ACPI_INIT_FUNCTION |
155 | AcpiEnableSubsystem ( |
156 | UINT32 Flags) |
157 | { |
158 | ACPI_STATUS Status = AE_OK; |
159 | |
160 | |
161 | ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); |
162 | |
163 | |
164 | /* |
165 | * The early initialization phase is complete. The namespace is loaded, |
166 | * and we can now support address spaces other than Memory, I/O, and |
167 | * PCI_Config. |
168 | */ |
169 | AcpiGbl_EarlyInitialization = FALSE; |
170 | |
171 | #if (!ACPI_REDUCED_HARDWARE) |
172 | |
173 | /* Enable ACPI mode */ |
174 | |
175 | if (!(Flags & ACPI_NO_ACPI_ENABLE)) |
176 | { |
177 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n" )); |
178 | |
179 | AcpiGbl_OriginalMode = AcpiHwGetMode(); |
180 | |
181 | Status = AcpiEnable (); |
182 | if (ACPI_FAILURE (Status)) |
183 | { |
184 | ACPI_WARNING ((AE_INFO, "AcpiEnable failed" )); |
185 | return_ACPI_STATUS (Status); |
186 | } |
187 | } |
188 | |
189 | /* |
190 | * Obtain a permanent mapping for the FACS. This is required for the |
191 | * Global Lock and the Firmware Waking Vector |
192 | */ |
193 | if (!(Flags & ACPI_NO_FACS_INIT)) |
194 | { |
195 | Status = AcpiTbInitializeFacs (); |
196 | if (ACPI_FAILURE (Status)) |
197 | { |
198 | ACPI_WARNING ((AE_INFO, "Could not map the FACS table" )); |
199 | return_ACPI_STATUS (Status); |
200 | } |
201 | } |
202 | |
203 | /* |
204 | * Initialize ACPI Event handling (Fixed and General Purpose) |
205 | * |
206 | * Note1: We must have the hardware and events initialized before we can |
207 | * execute any control methods safely. Any control method can require |
208 | * ACPI hardware support, so the hardware must be fully initialized before |
209 | * any method execution! |
210 | * |
211 | * Note2: Fixed events are initialized and enabled here. GPEs are |
212 | * initialized, but cannot be enabled until after the hardware is |
213 | * completely initialized (SCI and GlobalLock activated) and the various |
214 | * initialization control methods are run (_REG, _STA, _INI) on the |
215 | * entire namespace. |
216 | */ |
217 | if (!(Flags & ACPI_NO_EVENT_INIT)) |
218 | { |
219 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
220 | "[Init] Initializing ACPI events\n" )); |
221 | |
222 | Status = AcpiEvInitializeEvents (); |
223 | if (ACPI_FAILURE (Status)) |
224 | { |
225 | return_ACPI_STATUS (Status); |
226 | } |
227 | } |
228 | |
229 | /* |
230 | * Install the SCI handler and Global Lock handler. This completes the |
231 | * hardware initialization. |
232 | */ |
233 | if (!(Flags & ACPI_NO_HANDLER_INIT)) |
234 | { |
235 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
236 | "[Init] Installing SCI/GL handlers\n" )); |
237 | |
238 | Status = AcpiEvInstallXruptHandlers (); |
239 | if (ACPI_FAILURE (Status)) |
240 | { |
241 | return_ACPI_STATUS (Status); |
242 | } |
243 | } |
244 | |
245 | #endif /* !ACPI_REDUCED_HARDWARE */ |
246 | |
247 | return_ACPI_STATUS (Status); |
248 | } |
249 | |
250 | ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem) |
251 | |
252 | |
253 | /******************************************************************************* |
254 | * |
255 | * FUNCTION: AcpiInitializeObjects |
256 | * |
257 | * PARAMETERS: Flags - Init/enable Options |
258 | * |
259 | * RETURN: Status |
260 | * |
261 | * DESCRIPTION: Completes namespace initialization by initializing device |
262 | * objects and executing AML code for Regions, buffers, etc. |
263 | * |
264 | ******************************************************************************/ |
265 | |
266 | ACPI_STATUS ACPI_INIT_FUNCTION |
267 | AcpiInitializeObjects ( |
268 | UINT32 Flags) |
269 | { |
270 | ACPI_STATUS Status = AE_OK; |
271 | |
272 | |
273 | ACPI_FUNCTION_TRACE (AcpiInitializeObjects); |
274 | |
275 | |
276 | #ifdef ACPI_EXEC_APP |
277 | /* |
278 | * This call implements the "initialization file" option for AcpiExec. |
279 | * This is the precise point that we want to perform the overrides. |
280 | */ |
281 | AeDoObjectOverrides (); |
282 | #endif |
283 | |
284 | /* |
285 | * Execute any module-level code that was detected during the table load |
286 | * phase. Although illegal since ACPI 2.0, there are many machines that |
287 | * contain this type of code. Each block of detected executable AML code |
288 | * outside of any control method is wrapped with a temporary control |
289 | * method object and placed on a global list. The methods on this list |
290 | * are executed below. |
291 | * |
292 | * This case executes the module-level code for all tables only after |
293 | * all of the tables have been loaded. It is a legacy option and is |
294 | * not compatible with other ACPI implementations. See AcpiNsLoadTable. |
295 | */ |
296 | if (!AcpiGbl_ParseTableAsTermList && AcpiGbl_GroupModuleLevelCode) |
297 | { |
298 | AcpiNsExecModuleCodeList (); |
299 | |
300 | /* |
301 | * Initialize the objects that remain uninitialized. This |
302 | * runs the executable AML that may be part of the |
303 | * declaration of these objects: |
304 | * OperationRegions, BufferFields, Buffers, and Packages. |
305 | */ |
306 | if (!(Flags & ACPI_NO_OBJECT_INIT)) |
307 | { |
308 | Status = AcpiNsInitializeObjects (); |
309 | if (ACPI_FAILURE (Status)) |
310 | { |
311 | return_ACPI_STATUS (Status); |
312 | } |
313 | } |
314 | } |
315 | |
316 | /* |
317 | * Initialize all device/region objects in the namespace. This runs |
318 | * the device _STA and _INI methods and region _REG methods. |
319 | */ |
320 | if (!(Flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) |
321 | { |
322 | Status = AcpiNsInitializeDevices (Flags); |
323 | if (ACPI_FAILURE (Status)) |
324 | { |
325 | return_ACPI_STATUS (Status); |
326 | } |
327 | } |
328 | |
329 | /* |
330 | * Empty the caches (delete the cached objects) on the assumption that |
331 | * the table load filled them up more than they will be at runtime -- |
332 | * thus wasting non-paged memory. |
333 | */ |
334 | Status = AcpiPurgeCachedObjects (); |
335 | |
336 | AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; |
337 | return_ACPI_STATUS (Status); |
338 | } |
339 | |
340 | ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects) |
341 | |