Commit | Line | Data |
---|---|---|
95857638 | 1 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
d978348b BM |
2 | /****************************************************************************** |
3 | * | |
4 | * Module Name: utxfinit - External interfaces for ACPICA initialization | |
5 | * | |
612c2932 | 6 | * Copyright (C) 2000 - 2023, Intel Corp. |
d978348b | 7 | * |
95857638 | 8 | *****************************************************************************/ |
d978348b | 9 | |
839e928f LZ |
10 | #define EXPORT_ACPI_INTERFACES |
11 | ||
d978348b BM |
12 | #include <acpi/acpi.h> |
13 | #include "accommon.h" | |
14 | #include "acevents.h" | |
15 | #include "acnamesp.h" | |
16 | #include "acdebug.h" | |
17 | #include "actables.h" | |
18 | ||
19 | #define _COMPONENT ACPI_UTILITIES | |
20 | ACPI_MODULE_NAME("utxfinit") | |
21 | ||
b487867c BM |
22 | /* For acpi_exec only */ |
23 | void ae_do_object_overrides(void); | |
24 | ||
d978348b BM |
25 | /******************************************************************************* |
26 | * | |
27 | * FUNCTION: acpi_initialize_subsystem | |
28 | * | |
29 | * PARAMETERS: None | |
30 | * | |
31 | * RETURN: Status | |
32 | * | |
33 | * DESCRIPTION: Initializes all global variables. This is the first function | |
34 | * called, so any early initialization belongs here. | |
35 | * | |
36 | ******************************************************************************/ | |
b487867c | 37 | |
2368b1a1 | 38 | acpi_status ACPI_INIT_FUNCTION acpi_initialize_subsystem(void) |
d978348b BM |
39 | { |
40 | acpi_status status; | |
41 | ||
42 | ACPI_FUNCTION_TRACE(acpi_initialize_subsystem); | |
43 | ||
44 | acpi_gbl_startup_flags = ACPI_SUBSYSTEM_INITIALIZE; | |
45 | ACPI_DEBUG_EXEC(acpi_ut_init_stack_ptr_trace()); | |
46 | ||
47 | /* Initialize the OS-Dependent layer */ | |
48 | ||
49 | status = acpi_os_initialize(); | |
50 | if (ACPI_FAILURE(status)) { | |
51 | ACPI_EXCEPTION((AE_INFO, status, "During OSL initialization")); | |
52 | return_ACPI_STATUS(status); | |
53 | } | |
54 | ||
55 | /* Initialize all globals used by the subsystem */ | |
56 | ||
57 | status = acpi_ut_init_globals(); | |
58 | if (ACPI_FAILURE(status)) { | |
59 | ACPI_EXCEPTION((AE_INFO, status, | |
60 | "During initialization of globals")); | |
61 | return_ACPI_STATUS(status); | |
62 | } | |
63 | ||
64 | /* Create the default mutex objects */ | |
65 | ||
66 | status = acpi_ut_mutex_initialize(); | |
67 | if (ACPI_FAILURE(status)) { | |
68 | ACPI_EXCEPTION((AE_INFO, status, | |
69 | "During Global Mutex creation")); | |
70 | return_ACPI_STATUS(status); | |
71 | } | |
72 | ||
73 | /* | |
74 | * Initialize the namespace manager and | |
75 | * the root of the namespace tree | |
76 | */ | |
77 | status = acpi_ns_root_initialize(); | |
78 | if (ACPI_FAILURE(status)) { | |
79 | ACPI_EXCEPTION((AE_INFO, status, | |
80 | "During Namespace initialization")); | |
81 | return_ACPI_STATUS(status); | |
82 | } | |
83 | ||
84 | /* Initialize the global OSI interfaces list with the static names */ | |
85 | ||
86 | status = acpi_ut_initialize_interfaces(); | |
87 | if (ACPI_FAILURE(status)) { | |
88 | ACPI_EXCEPTION((AE_INFO, status, | |
89 | "During OSI interfaces initialization")); | |
90 | return_ACPI_STATUS(status); | |
91 | } | |
92 | ||
1a2c4783 | 93 | return_ACPI_STATUS(AE_OK); |
d978348b | 94 | } |
d21f600b LZ |
95 | |
96 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_subsystem) | |
d978348b BM |
97 | |
98 | /******************************************************************************* | |
99 | * | |
100 | * FUNCTION: acpi_enable_subsystem | |
101 | * | |
102 | * PARAMETERS: flags - Init/enable Options | |
103 | * | |
104 | * RETURN: Status | |
105 | * | |
106 | * DESCRIPTION: Completes the subsystem initialization including hardware. | |
107 | * Puts system into ACPI mode if it isn't already. | |
108 | * | |
109 | ******************************************************************************/ | |
2368b1a1 | 110 | acpi_status ACPI_INIT_FUNCTION acpi_enable_subsystem(u32 flags) |
d978348b BM |
111 | { |
112 | acpi_status status = AE_OK; | |
113 | ||
114 | ACPI_FUNCTION_TRACE(acpi_enable_subsystem); | |
115 | ||
7b738064 BM |
116 | /* |
117 | * The early initialization phase is complete. The namespace is loaded, | |
118 | * and we can now support address spaces other than Memory, I/O, and | |
119 | * PCI_Config. | |
120 | */ | |
121 | acpi_gbl_early_initialization = FALSE; | |
122 | ||
d978348b BM |
123 | #if (!ACPI_REDUCED_HARDWARE) |
124 | ||
125 | /* Enable ACPI mode */ | |
126 | ||
127 | if (!(flags & ACPI_NO_ACPI_ENABLE)) { | |
128 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
129 | "[Init] Going into ACPI mode\n")); | |
130 | ||
131 | acpi_gbl_original_mode = acpi_hw_get_mode(); | |
132 | ||
133 | status = acpi_enable(); | |
134 | if (ACPI_FAILURE(status)) { | |
135 | ACPI_WARNING((AE_INFO, "AcpiEnable failed")); | |
136 | return_ACPI_STATUS(status); | |
137 | } | |
138 | } | |
139 | ||
140 | /* | |
141 | * Obtain a permanent mapping for the FACS. This is required for the | |
142 | * Global Lock and the Firmware Waking Vector | |
143 | */ | |
c04be184 LZ |
144 | if (!(flags & ACPI_NO_FACS_INIT)) { |
145 | status = acpi_tb_initialize_facs(); | |
146 | if (ACPI_FAILURE(status)) { | |
147 | ACPI_WARNING((AE_INFO, "Could not map the FACS table")); | |
148 | return_ACPI_STATUS(status); | |
149 | } | |
d978348b | 150 | } |
d978348b | 151 | |
d978348b BM |
152 | /* |
153 | * Initialize ACPI Event handling (Fixed and General Purpose) | |
154 | * | |
155 | * Note1: We must have the hardware and events initialized before we can | |
156 | * execute any control methods safely. Any control method can require | |
157 | * ACPI hardware support, so the hardware must be fully initialized before | |
158 | * any method execution! | |
159 | * | |
160 | * Note2: Fixed events are initialized and enabled here. GPEs are | |
161 | * initialized, but cannot be enabled until after the hardware is | |
162 | * completely initialized (SCI and global_lock activated) and the various | |
163 | * initialization control methods are run (_REG, _STA, _INI) on the | |
164 | * entire namespace. | |
165 | */ | |
166 | if (!(flags & ACPI_NO_EVENT_INIT)) { | |
167 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
168 | "[Init] Initializing ACPI events\n")); | |
169 | ||
170 | status = acpi_ev_initialize_events(); | |
171 | if (ACPI_FAILURE(status)) { | |
172 | return_ACPI_STATUS(status); | |
173 | } | |
174 | } | |
175 | ||
176 | /* | |
177 | * Install the SCI handler and Global Lock handler. This completes the | |
178 | * hardware initialization. | |
179 | */ | |
180 | if (!(flags & ACPI_NO_HANDLER_INIT)) { | |
181 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, | |
182 | "[Init] Installing SCI/GL handlers\n")); | |
183 | ||
184 | status = acpi_ev_install_xrupt_handlers(); | |
185 | if (ACPI_FAILURE(status)) { | |
186 | return_ACPI_STATUS(status); | |
187 | } | |
188 | } | |
189 | #endif /* !ACPI_REDUCED_HARDWARE */ | |
190 | ||
191 | return_ACPI_STATUS(status); | |
192 | } | |
d21f600b LZ |
193 | |
194 | ACPI_EXPORT_SYMBOL_INIT(acpi_enable_subsystem) | |
d978348b BM |
195 | |
196 | /******************************************************************************* | |
197 | * | |
198 | * FUNCTION: acpi_initialize_objects | |
199 | * | |
200 | * PARAMETERS: flags - Init/enable Options | |
201 | * | |
202 | * RETURN: Status | |
203 | * | |
204 | * DESCRIPTION: Completes namespace initialization by initializing device | |
205 | * objects and executing AML code for Regions, buffers, etc. | |
206 | * | |
207 | ******************************************************************************/ | |
2368b1a1 | 208 | acpi_status ACPI_INIT_FUNCTION acpi_initialize_objects(u32 flags) |
d978348b BM |
209 | { |
210 | acpi_status status = AE_OK; | |
211 | ||
212 | ACPI_FUNCTION_TRACE(acpi_initialize_objects); | |
213 | ||
86a33cf3 BM |
214 | #ifdef ACPI_OBSOLETE_BEHAVIOR |
215 | /* | |
216 | * 05/2019: Removed, initialization now happens at both object | |
217 | * creation and table load time | |
218 | */ | |
219 | ||
d978348b | 220 | /* |
a406dea8 BM |
221 | * Initialize the objects that remain uninitialized. This |
222 | * runs the executable AML that may be part of the | |
86a33cf3 BM |
223 | * declaration of these objects: operation_regions, buffer_fields, |
224 | * bank_fields, Buffers, and Packages. | |
d978348b | 225 | */ |
a406dea8 BM |
226 | if (!(flags & ACPI_NO_OBJECT_INIT)) { |
227 | status = acpi_ns_initialize_objects(); | |
228 | if (ACPI_FAILURE(status)) { | |
229 | return_ACPI_STATUS(status); | |
d978348b BM |
230 | } |
231 | } | |
86a33cf3 | 232 | #endif |
d978348b BM |
233 | |
234 | /* | |
ced04366 LZ |
235 | * Initialize all device/region objects in the namespace. This runs |
236 | * the device _STA and _INI methods and region _REG methods. | |
d978348b | 237 | */ |
ced04366 LZ |
238 | if (!(flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) { |
239 | status = acpi_ns_initialize_devices(flags); | |
d978348b BM |
240 | if (ACPI_FAILURE(status)) { |
241 | return_ACPI_STATUS(status); | |
242 | } | |
243 | } | |
244 | ||
245 | /* | |
246 | * Empty the caches (delete the cached objects) on the assumption that | |
247 | * the table load filled them up more than they will be at runtime -- | |
248 | * thus wasting non-paged memory. | |
249 | */ | |
250 | status = acpi_purge_cached_objects(); | |
251 | ||
252 | acpi_gbl_startup_flags |= ACPI_INITIALIZED_OK; | |
253 | return_ACPI_STATUS(status); | |
254 | } | |
d21f600b LZ |
255 | |
256 | ACPI_EXPORT_SYMBOL_INIT(acpi_initialize_objects) |