| 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 | |