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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 | ||
150 | #if (!ACPI_REDUCED_HARDWARE) | |
151 | ||
152 | /* Enable ACPI mode */ | |
153 | ||
154 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { | |
155 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
156 | "[Init] Going into ACPI mode\n")); | |
157 | ||
158 | acpi_gbl_original_mode = acpi_hw_get_mode(); | |
159 | ||
160 | status = acpi_enable(); | |
161 | if (ACPI_FAILURE(status)) { | |
162 | ACPI_WARNING((AE_INFO, "AcpiEnable failed")); | |
163 | return_ACPI_STATUS(status); | |
164 | } | |
165 | } | |
166 | ||
167 | /* | |
168 | * Obtain a permanent mapping for the FACS. This is required for the | |
169 | * Global Lock and the Firmware Waking Vector | |
170 | */ | |
c04be184 LZ |
171 | if (!(flags & ACPI_NO_FACS_INIT)) { |
172 | status = acpi_tb_initialize_facs(); | |
173 | if (ACPI_FAILURE(status)) { | |
174 | ACPI_WARNING((AE_INFO, "Could not map the FACS table")); | |
175 | return_ACPI_STATUS(status); | |
176 | } | |
d978348b BM |
177 | } |
178 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
179 | ||
180 | /* | |
181 | * Install the default op_region handlers. These are installed unless | |
182 | * other handlers have already been installed via the | |
183 | * install_address_space_handler interface. | |
184 | */ | |
185 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { | |
186 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
187 | "[Init] Installing default address space handlers\n")); | |
188 | ||
189 | status = acpi_ev_install_region_handlers(); | |
190 | if (ACPI_FAILURE(status)) { | |
191 | return_ACPI_STATUS(status); | |
192 | } | |
193 | } | |
194 | #if (!ACPI_REDUCED_HARDWARE) | |
195 | /* | |
196 | * Initialize ACPI Event handling (Fixed and General Purpose) | |
197 | * | |
198 | * Note1: We must have the hardware and events initialized before we can | |
199 | * execute any control methods safely. Any control method can require | |
200 | * ACPI hardware support, so the hardware must be fully initialized before | |
201 | * any method execution! | |
202 | * | |
203 | * Note2: Fixed events are initialized and enabled here. GPEs are | |
204 | * initialized, but cannot be enabled until after the hardware is | |
205 | * completely initialized (SCI and global_lock activated) and the various | |
206 | * initialization control methods are run (_REG, _STA, _INI) on the | |
207 | * entire namespace. | |
208 | */ | |
209 | if (!(flags & ACPI_NO_EVENT_INIT)) { | |
210 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
211 | "[Init] Initializing ACPI events\n")); | |
212 | ||
213 | status = acpi_ev_initialize_events(); | |
214 | if (ACPI_FAILURE(status)) { | |
215 | return_ACPI_STATUS(status); | |
216 | } | |
217 | } | |
218 | ||
219 | /* | |
220 | * Install the SCI handler and Global Lock handler. This completes the | |
221 | * hardware initialization. | |
222 | */ | |
223 | if (!(flags & ACPI_NO_HANDLER_INIT)) { | |
224 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
225 | "[Init] Installing SCI/GL handlers\n")); | |
226 | ||
227 | status = acpi_ev_install_xrupt_handlers(); | |
228 | if (ACPI_FAILURE(status)) { | |
229 | return_ACPI_STATUS(status); | |
230 | } | |
231 | } | |
232 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
233 | ||
234 | return_ACPI_STATUS(status); | |
235 | } | |
d21f600b LZ |
236 | |
237 | ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) | |
d978348b BM |
238 | |
239 | /******************************************************************************* | |
240 | * | |
241 | * FUNCTION: acpi_initialize_objects | |
242 | * | |
243 | * PARAMETERS: flags - Init/enable Options | |
244 | * | |
245 | * RETURN: Status | |
246 | * | |
247 | * DESCRIPTION: Completes namespace initialization by initializing device | |
248 | * objects and executing AML code for Regions, buffers, etc. | |
249 | * | |
250 | ******************************************************************************/ | |
45c9f78b | 251 | acpi_status __init acpi_initialize_objects(u32 flags) |
d978348b BM |
252 | { |
253 | acpi_status status = AE_OK; | |
254 | ||
255 | ACPI_FUNCTION_TRACE(acpi_initialize_objects); | |
256 | ||
257 | /* | |
258 | * Run all _REG methods | |
259 | * | |
260 | * Note: Any objects accessed by the _REG methods will be automatically | |
261 | * initialized, even if they contain executable AML (see the call to | |
262 | * acpi_ns_initialize_objects below). | |
263 | */ | |
264 | if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) { | |
265 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
266 | "[Init] Executing _REG OpRegion methods\n")); | |
267 | ||
268 | status = acpi_ev_initialize_op_regions(); | |
269 | if (ACPI_FAILURE(status)) { | |
270 | return_ACPI_STATUS(status); | |
271 | } | |
272 | } | |
b487867c BM |
273 | #ifdef ACPI_EXEC_APP |
274 | /* | |
275 | * This call implements the "initialization file" option for acpi_exec. | |
276 | * This is the precise point that we want to perform the overrides. | |
277 | */ | |
278 | ae_do_object_overrides(); | |
279 | #endif | |
d978348b BM |
280 | |
281 | /* | |
282 | * Execute any module-level code that was detected during the table load | |
283 | * phase. Although illegal since ACPI 2.0, there are many machines that | |
284 | * contain this type of code. Each block of detected executable AML code | |
285 | * outside of any control method is wrapped with a temporary control | |
286 | * method object and placed on a global list. The methods on this list | |
287 | * are executed below. | |
288 | */ | |
289 | acpi_ns_exec_module_code_list(); | |
290 | ||
291 | /* | |
292 | * Initialize the objects that remain uninitialized. This runs the | |
293 | * executable AML that may be part of the declaration of these objects: | |
294 | * operation_regions, buffer_fields, Buffers, and Packages. | |
295 | */ | |
296 | if (!(flags & ACPI_NO_OBJECT_INIT)) { | |
297 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
298 | "[Init] Completing Initialization of ACPI Objects\n")); | |
299 | ||
300 | status = acpi_ns_initialize_objects(); | |
301 | if (ACPI_FAILURE(status)) { | |
302 | return_ACPI_STATUS(status); | |
303 | } | |
304 | } | |
305 | ||
306 | /* | |
307 | * Initialize all device objects in the namespace. This runs the device | |
308 | * _STA and _INI methods. | |
309 | */ | |
310 | if (!(flags & ACPI_NO_DEVICE_INIT)) { | |
311 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
312 | "[Init] Initializing ACPI Devices\n")); | |
313 | ||
314 | status = acpi_ns_initialize_devices(); | |
315 | if (ACPI_FAILURE(status)) { | |
316 | return_ACPI_STATUS(status); | |
317 | } | |
318 | } | |
319 | ||
320 | /* | |
321 | * Empty the caches (delete the cached objects) on the assumption that | |
322 | * the table load filled them up more than they will be at runtime -- | |
323 | * thus wasting non-paged memory. | |
324 | */ | |
325 | status = acpi_purge_cached_objects(); | |
326 | ||
327 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; | |
328 | return_ACPI_STATUS(status); | |
329 | } | |
d21f600b LZ |
330 | |
331 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects) |