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d978348b BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utxfinit - External interfaces for ACPICA initialization | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
d978348b BM |
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 | ||
839e928f LZ |
44 | #define EXPORT_ACPI_INTERFACES |
45 | ||
d978348b BM |
46 | #include <acpi/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 | ||
b487867c BM |
56 | /* For acpi_exec only */ |
57 | void ae_do_object_overrides(void); | |
58 | ||
d978348b BM |
59 | /******************************************************************************* |
60 | * | |
61 | * FUNCTION: acpi_initialize_subsystem | |
62 | * | |
63 | * PARAMETERS: None | |
64 | * | |
65 | * RETURN: Status | |
66 | * | |
67 | * DESCRIPTION: Initializes all global variables. This is the first function | |
68 | * called, so any early initialization belongs here. | |
69 | * | |
70 | ******************************************************************************/ | |
b487867c | 71 | |
45c9f78b | 72 | acpi_status __init acpi_initialize_subsystem(void) |
d978348b BM |
73 | { |
74 | acpi_status status; | |
75 | ||
76 | ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); | |
77 | ||
78 | acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; | |
79 | ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); | |
80 | ||
81 | /* Initialize the OS-Dependent layer */ | |
82 | ||
83 | status = acpi_os_initialize(); | |
84 | if (ACPI_FAILURE(status)) { | |
85 | ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); | |
86 | return_ACPI_STATUS(status); | |
87 | } | |
88 | ||
89 | /* Initialize all globals used by the subsystem */ | |
90 | ||
91 | status = acpi_ut_init_globals(); | |
92 | if (ACPI_FAILURE(status)) { | |
93 | ACPI_EXCEPTION((AE_INFO, status, | |
94 | "During initialization of globals")); | |
95 | return_ACPI_STATUS(status); | |
96 | } | |
97 | ||
98 | /* Create the default mutex objects */ | |
99 | ||
100 | status = acpi_ut_mutex_initialize(); | |
101 | if (ACPI_FAILURE(status)) { | |
102 | ACPI_EXCEPTION((AE_INFO, status, | |
103 | "During Global Mutex creation")); | |
104 | return_ACPI_STATUS(status); | |
105 | } | |
106 | ||
107 | /* | |
108 | * Initialize the namespace manager and | |
109 | * the root of the namespace tree | |
110 | */ | |
111 | status = acpi_ns_root_initialize(); | |
112 | if (ACPI_FAILURE(status)) { | |
113 | ACPI_EXCEPTION((AE_INFO, status, | |
114 | "During Namespace initialization")); | |
115 | return_ACPI_STATUS(status); | |
116 | } | |
117 | ||
118 | /* Initialize the global OSI interfaces list with the static names */ | |
119 | ||
120 | status = acpi_ut_initialize_interfaces(); | |
121 | if (ACPI_FAILURE(status)) { | |
122 | ACPI_EXCEPTION((AE_INFO, status, | |
123 | "During OSI interfaces initialization")); | |
124 | return_ACPI_STATUS(status); | |
125 | } | |
126 | ||
1a2c4783 | 127 | return_ACPI_STATUS(AE_OK); |
d978348b | 128 | } |
d21f600b LZ |
129 | |
130 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem) | |
d978348b BM |
131 | |
132 | /******************************************************************************* | |
133 | * | |
134 | * FUNCTION: acpi_enable_subsystem | |
135 | * | |
136 | * PARAMETERS: flags - Init/enable Options | |
137 | * | |
138 | * RETURN: Status | |
139 | * | |
140 | * DESCRIPTION: Completes the subsystem initialization including hardware. | |
141 | * Puts system into ACPI mode if it isn't already. | |
142 | * | |
143 | ******************************************************************************/ | |
45c9f78b | 144 | acpi_status __init acpi_enable_subsystem(u32 flags) |
d978348b BM |
145 | { |
146 | acpi_status status = AE_OK; | |
147 | ||
148 | ACPI_FUNCTION_TRACE(acpi_enable_subsystem); | |
149 | ||
7b738064 BM |
150 | /* |
151 | * The early initialization phase is complete. The namespace is loaded, | |
152 | * and we can now support address spaces other than Memory, I/O, and | |
153 | * PCI_Config. | |
154 | */ | |
155 | acpi_gbl_early_initialization = FALSE; | |
156 | ||
2e1beaf6 LZ |
157 | /* |
158 | * Install the default operation region handlers. These are the | |
159 | * handlers that are defined by the ACPI specification to be | |
160 | * "always accessible" -- namely, system_memory, system_IO, and | |
161 | * PCI_Config. This also means that no _REG methods need to be | |
162 | * run for these address spaces. We need to have these handlers | |
163 | * installed before any AML code can be executed, especially any | |
164 | * module-level code (11/2015). | |
165 | */ | |
166 | status = acpi_ev_install_region_handlers(); | |
167 | if (ACPI_FAILURE(status)) { | |
168 | ACPI_EXCEPTION((AE_INFO, status, | |
169 | "During Region initialization")); | |
170 | return_ACPI_STATUS(status); | |
171 | } | |
d978348b BM |
172 | #if (!ACPI_REDUCED_HARDWARE) |
173 | ||
174 | /* Enable ACPI mode */ | |
175 | ||
176 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { | |
177 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
178 | "[Init] Going into ACPI mode\n")); | |
179 | ||
180 | acpi_gbl_original_mode = acpi_hw_get_mode(); | |
181 | ||
182 | status = acpi_enable(); | |
183 | if (ACPI_FAILURE(status)) { | |
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 | */ | |
c04be184 LZ |
193 | if (!(flags & ACPI_NO_FACS_INIT)) { |
194 | status = acpi_tb_initialize_facs(); | |
195 | if (ACPI_FAILURE(status)) { | |
196 | ACPI_WARNING((AE_INFO, "Could not map the FACS table")); | |
197 | return_ACPI_STATUS(status); | |
198 | } | |
d978348b | 199 | } |
d978348b | 200 | |
d978348b BM |
201 | /* |
202 | * Initialize ACPI Event handling (Fixed and General Purpose) | |
203 | * | |
204 | * Note1: We must have the hardware and events initialized before we can | |
205 | * execute any control methods safely. Any control method can require | |
206 | * ACPI hardware support, so the hardware must be fully initialized before | |
207 | * any method execution! | |
208 | * | |
209 | * Note2: Fixed events are initialized and enabled here. GPEs are | |
210 | * initialized, but cannot be enabled until after the hardware is | |
211 | * completely initialized (SCI and global_lock activated) and the various | |
212 | * initialization control methods are run (_REG, _STA, _INI) on the | |
213 | * entire namespace. | |
214 | */ | |
215 | if (!(flags & ACPI_NO_EVENT_INIT)) { | |
216 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
217 | "[Init] Initializing ACPI events\n")); | |
218 | ||
219 | status = acpi_ev_initialize_events(); | |
220 | if (ACPI_FAILURE(status)) { | |
221 | return_ACPI_STATUS(status); | |
222 | } | |
223 | } | |
224 | ||
225 | /* | |
226 | * Install the SCI handler and Global Lock handler. This completes the | |
227 | * hardware initialization. | |
228 | */ | |
229 | if (!(flags & ACPI_NO_HANDLER_INIT)) { | |
230 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
231 | "[Init] Installing SCI/GL handlers\n")); | |
232 | ||
233 | status = acpi_ev_install_xrupt_handlers(); | |
234 | if (ACPI_FAILURE(status)) { | |
235 | return_ACPI_STATUS(status); | |
236 | } | |
237 | } | |
238 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
239 | ||
240 | return_ACPI_STATUS(status); | |
241 | } | |
d21f600b LZ |
242 | |
243 | ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) | |
d978348b BM |
244 | |
245 | /******************************************************************************* | |
246 | * | |
247 | * FUNCTION: acpi_initialize_objects | |
248 | * | |
249 | * PARAMETERS: flags - Init/enable Options | |
250 | * | |
251 | * RETURN: Status | |
252 | * | |
253 | * DESCRIPTION: Completes namespace initialization by initializing device | |
254 | * objects and executing AML code for Regions, buffers, etc. | |
255 | * | |
256 | ******************************************************************************/ | |
45c9f78b | 257 | acpi_status __init acpi_initialize_objects(u32 flags) |
d978348b BM |
258 | { |
259 | acpi_status status = AE_OK; | |
260 | ||
261 | ACPI_FUNCTION_TRACE(acpi_initialize_objects); | |
262 | ||
263 | /* | |
264 | * Run all _REG methods | |
265 | * | |
266 | * Note: Any objects accessed by the _REG methods will be automatically | |
267 | * initialized, even if they contain executable AML (see the call to | |
268 | * acpi_ns_initialize_objects below). | |
269 | */ | |
efaed9be | 270 | acpi_gbl_reg_methods_enabled = TRUE; |
d978348b BM |
271 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { |
272 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
273 | "[Init] Executing _REG OpRegion methods\n")); | |
274 | ||
275 | status = acpi_ev_initialize_op_regions(); | |
276 | if (ACPI_FAILURE(status)) { | |
277 | return_ACPI_STATUS(status); | |
278 | } | |
279 | } | |
b487867c BM |
280 | #ifdef ACPI_EXEC_APP |
281 | /* | |
282 | * This call implements the "initialization file" option for acpi_exec. | |
283 | * This is the precise point that we want to perform the overrides. | |
284 | */ | |
285 | ae_do_object_overrides(); | |
286 | #endif | |
d978348b BM |
287 | |
288 | /* | |
289 | * Execute any module-level code that was detected during the table load | |
290 | * phase. Although illegal since ACPI 2.0, there are many machines that | |
291 | * contain this type of code. Each block of detected executable AML code | |
292 | * outside of any control method is wrapped with a temporary control | |
293 | * method object and placed on a global list. The methods on this list | |
294 | * are executed below. | |
295 | */ | |
296 | acpi_ns_exec_module_code_list(); | |
297 | ||
298 | /* | |
299 | * Initialize the objects that remain uninitialized. This runs the | |
300 | * executable AML that may be part of the declaration of these objects: | |
301 | * operation_regions, buffer_fields, Buffers, and Packages. | |
302 | */ | |
303 | if (!(flags & ACPI_NO_OBJECT_INIT)) { | |
304 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
305 | "[Init] Completing Initialization of ACPI Objects\n")); | |
306 | ||
307 | status = acpi_ns_initialize_objects(); | |
308 | if (ACPI_FAILURE(status)) { | |
309 | return_ACPI_STATUS(status); | |
310 | } | |
311 | } | |
312 | ||
313 | /* | |
314 | * Initialize all device objects in the namespace. This runs the device | |
315 | * _STA and _INI methods. | |
316 | */ | |
317 | if (!(flags & ACPI_NO_DEVICE_INIT)) { | |
318 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
319 | "[Init] Initializing ACPI Devices\n")); | |
320 | ||
321 | status = acpi_ns_initialize_devices(); | |
322 | if (ACPI_FAILURE(status)) { | |
323 | return_ACPI_STATUS(status); | |
324 | } | |
325 | } | |
326 | ||
327 | /* | |
328 | * Empty the caches (delete the cached objects) on the assumption that | |
329 | * the table load filled them up more than they will be at runtime -- | |
330 | * thus wasting non-paged memory. | |
331 | */ | |
332 | status = acpi_purge_cached_objects(); | |
333 | ||
334 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; | |
335 | return_ACPI_STATUS(status); | |
336 | } | |
d21f600b LZ |
337 | |
338 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects) |