1 /****************************************************************************** 2 * 3 * Module Name: utxfinit - External interfaces for ACPICA initialization 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 *****************************************************************************/ 115 116 #define EXPORT_ACPI_INTERFACES 117 118 #include "acpi.h" 119 #include "accommon.h" 120 #include "acevents.h" 121 #include "acnamesp.h" 122 #include "acdebug.h" 123 #include "actables.h" 124 125 #define _COMPONENT ACPI_UTILITIES 126 ACPI_MODULE_NAME ("utxfinit") 127 128 /* For AcpiExec only */ 129 void 130 AeDoObjectOverrides ( 131 void); 132 133 134 /******************************************************************************* 135 * 136 * FUNCTION: AcpiInitializeSubsystem 137 * 138 * PARAMETERS: None 139 * 140 * RETURN: Status 141 * 142 * DESCRIPTION: Initializes all global variables. This is the first function 143 * called, so any early initialization belongs here. 144 * 145 ******************************************************************************/ 146 147 ACPI_STATUS 148 AcpiInitializeSubsystem ( 149 void) 150 { 151 ACPI_STATUS Status; 152 153 154 ACPI_FUNCTION_TRACE (AcpiInitializeSubsystem); 155 156 157 AcpiGbl_StartupFlags = ACPI_SUBSYSTEM_INITIALIZE; 158 ACPI_DEBUG_EXEC (AcpiUtInitStackPtrTrace ()); 159 160 /* Initialize the OS-Dependent layer */ 161 162 Status = AcpiOsInitialize (); 163 if (ACPI_FAILURE (Status)) 164 { 165 ACPI_EXCEPTION ((AE_INFO, Status, "During OSL initialization")); 166 return_ACPI_STATUS (Status); 167 } 168 169 /* Initialize all globals used by the subsystem */ 170 171 Status = AcpiUtInitGlobals (); 172 if (ACPI_FAILURE (Status)) 173 { 174 ACPI_EXCEPTION ((AE_INFO, Status, "During initialization of globals")); 175 return_ACPI_STATUS (Status); 176 } 177 178 /* Create the default mutex objects */ 179 180 Status = AcpiUtMutexInitialize (); 181 if (ACPI_FAILURE (Status)) 182 { 183 ACPI_EXCEPTION ((AE_INFO, Status, "During Global Mutex creation")); 184 return_ACPI_STATUS (Status); 185 } 186 187 /* 188 * Initialize the namespace manager and 189 * the root of the namespace tree 190 */ 191 Status = AcpiNsRootInitialize (); 192 if (ACPI_FAILURE (Status)) 193 { 194 ACPI_EXCEPTION ((AE_INFO, Status, "During Namespace initialization")); 195 return_ACPI_STATUS (Status); 196 } 197 198 /* Initialize the global OSI interfaces list with the static names */ 199 200 Status = AcpiUtInitializeInterfaces (); 201 if (ACPI_FAILURE (Status)) 202 { 203 ACPI_EXCEPTION ((AE_INFO, Status, "During OSI interfaces initialization")); 204 return_ACPI_STATUS (Status); 205 } 206 207 return_ACPI_STATUS (AE_OK); 208 } 209 210 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeSubsystem) 211 212 213 /******************************************************************************* 214 * 215 * FUNCTION: AcpiEnableSubsystem 216 * 217 * PARAMETERS: Flags - Init/enable Options 218 * 219 * RETURN: Status 220 * 221 * DESCRIPTION: Completes the subsystem initialization including hardware. 222 * Puts system into ACPI mode if it isn't already. 223 * 224 ******************************************************************************/ 225 226 ACPI_STATUS 227 AcpiEnableSubsystem ( 228 UINT32 Flags) 229 { 230 ACPI_STATUS Status = AE_OK; 231 232 233 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); 234 235 236 #if (!ACPI_REDUCED_HARDWARE) 237 238 /* Enable ACPI mode */ 239 240 if (!(Flags & ACPI_NO_ACPI_ENABLE)) 241 { 242 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); 243 244 AcpiGbl_OriginalMode = AcpiHwGetMode(); 245 246 Status = AcpiEnable (); 247 if (ACPI_FAILURE (Status)) 248 { 249 ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); 250 return_ACPI_STATUS (Status); 251 } 252 } 253 254 /* 255 * Obtain a permanent mapping for the FACS. This is required for the 256 * Global Lock and the Firmware Waking Vector 257 */ 258 if (!(Flags & ACPI_NO_FACS_INIT)) 259 { 260 Status = AcpiTbInitializeFacs (); 261 if (ACPI_FAILURE (Status)) 262 { 263 ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); 264 return_ACPI_STATUS (Status); 265 } 266 } 267 268 #endif /* !ACPI_REDUCED_HARDWARE */ 269 270 /* 271 * Install the default OpRegion handlers. These are installed unless 272 * other handlers have already been installed via the 273 * InstallAddressSpaceHandler interface. 274 */ 275 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 276 { 277 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 278 "[Init] Installing default address space handlers\n")); 279 280 Status = AcpiEvInstallRegionHandlers (); 281 if (ACPI_FAILURE (Status)) 282 { 283 return_ACPI_STATUS (Status); 284 } 285 } 286 287 #if (!ACPI_REDUCED_HARDWARE) 288 /* 289 * Initialize ACPI Event handling (Fixed and General Purpose) 290 * 291 * Note1: We must have the hardware and events initialized before we can 292 * execute any control methods safely. Any control method can require 293 * ACPI hardware support, so the hardware must be fully initialized before 294 * any method execution! 295 * 296 * Note2: Fixed events are initialized and enabled here. GPEs are 297 * initialized, but cannot be enabled until after the hardware is 298 * completely initialized (SCI and GlobalLock activated) and the various 299 * initialization control methods are run (_REG, _STA, _INI) on the 300 * entire namespace. 301 */ 302 if (!(Flags & ACPI_NO_EVENT_INIT)) 303 { 304 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 305 "[Init] Initializing ACPI events\n")); 306 307 Status = AcpiEvInitializeEvents (); 308 if (ACPI_FAILURE (Status)) 309 { 310 return_ACPI_STATUS (Status); 311 } 312 } 313 314 /* 315 * Install the SCI handler and Global Lock handler. This completes the 316 * hardware initialization. 317 */ 318 if (!(Flags & ACPI_NO_HANDLER_INIT)) 319 { 320 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 321 "[Init] Installing SCI/GL handlers\n")); 322 323 Status = AcpiEvInstallXruptHandlers (); 324 if (ACPI_FAILURE (Status)) 325 { 326 return_ACPI_STATUS (Status); 327 } 328 } 329 330 #endif /* !ACPI_REDUCED_HARDWARE */ 331 332 return_ACPI_STATUS (Status); 333 } 334 335 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem) 336 337 338 /******************************************************************************* 339 * 340 * FUNCTION: AcpiInitializeObjects 341 * 342 * PARAMETERS: Flags - Init/enable Options 343 * 344 * RETURN: Status 345 * 346 * DESCRIPTION: Completes namespace initialization by initializing device 347 * objects and executing AML code for Regions, buffers, etc. 348 * 349 ******************************************************************************/ 350 351 ACPI_STATUS 352 AcpiInitializeObjects ( 353 UINT32 Flags) 354 { 355 ACPI_STATUS Status = AE_OK; 356 357 358 ACPI_FUNCTION_TRACE (AcpiInitializeObjects); 359 360 361 /* 362 * Run all _REG methods 363 * 364 * Note: Any objects accessed by the _REG methods will be automatically 365 * initialized, even if they contain executable AML (see the call to 366 * AcpiNsInitializeObjects below). 367 */ 368 if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT)) 369 { 370 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 371 "[Init] Executing _REG OpRegion methods\n")); 372 373 Status = AcpiEvInitializeOpRegions (); 374 if (ACPI_FAILURE (Status)) 375 { 376 return_ACPI_STATUS (Status); 377 } 378 } 379 380 #ifdef ACPI_EXEC_APP 381 /* 382 * This call implements the "initialization file" option for AcpiExec. 383 * This is the precise point that we want to perform the overrides. 384 */ 385 AeDoObjectOverrides (); 386 #endif 387 388 /* 389 * Execute any module-level code that was detected during the table load 390 * phase. Although illegal since ACPI 2.0, there are many machines that 391 * contain this type of code. Each block of detected executable AML code 392 * outside of any control method is wrapped with a temporary control 393 * method object and placed on a global list. The methods on this list 394 * are executed below. 395 */ 396 AcpiNsExecModuleCodeList (); 397 398 /* 399 * Initialize the objects that remain uninitialized. This runs the 400 * executable AML that may be part of the declaration of these objects: 401 * OperationRegions, BufferFields, Buffers, and Packages. 402 */ 403 if (!(Flags & ACPI_NO_OBJECT_INIT)) 404 { 405 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 406 "[Init] Completing Initialization of ACPI Objects\n")); 407 408 Status = AcpiNsInitializeObjects (); 409 if (ACPI_FAILURE (Status)) 410 { 411 return_ACPI_STATUS (Status); 412 } 413 } 414 415 /* 416 * Initialize all device objects in the namespace. This runs the device 417 * _STA and _INI methods. 418 */ 419 if (!(Flags & ACPI_NO_DEVICE_INIT)) 420 { 421 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 422 "[Init] Initializing ACPI Devices\n")); 423 424 Status = AcpiNsInitializeDevices (); 425 if (ACPI_FAILURE (Status)) 426 { 427 return_ACPI_STATUS (Status); 428 } 429 } 430 431 /* 432 * Empty the caches (delete the cached objects) on the assumption that 433 * the table load filled them up more than they will be at runtime -- 434 * thus wasting non-paged memory. 435 */ 436 Status = AcpiPurgeCachedObjects (); 437 438 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; 439 return_ACPI_STATUS (Status); 440 } 441 442 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects) 443