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 - 2016, 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 ACPI_INIT_FUNCTION 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 ACPI_INIT_FUNCTION 227 AcpiEnableSubsystem ( 228 UINT32 Flags) 229 { 230 ACPI_STATUS Status = AE_OK; 231 232 233 ACPI_FUNCTION_TRACE (AcpiEnableSubsystem); 234 235 236 /* 237 * The early initialization phase is complete. The namespace is loaded, 238 * and we can now support address spaces other than Memory, I/O, and 239 * PCI_Config. 240 */ 241 AcpiGbl_EarlyInitialization = FALSE; 242 243 #if (!ACPI_REDUCED_HARDWARE) 244 245 /* Enable ACPI mode */ 246 247 if (!(Flags & ACPI_NO_ACPI_ENABLE)) 248 { 249 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Init] Going into ACPI mode\n")); 250 251 AcpiGbl_OriginalMode = AcpiHwGetMode(); 252 253 Status = AcpiEnable (); 254 if (ACPI_FAILURE (Status)) 255 { 256 ACPI_WARNING ((AE_INFO, "AcpiEnable failed")); 257 return_ACPI_STATUS (Status); 258 } 259 } 260 261 /* 262 * Obtain a permanent mapping for the FACS. This is required for the 263 * Global Lock and the Firmware Waking Vector 264 */ 265 if (!(Flags & ACPI_NO_FACS_INIT)) 266 { 267 Status = AcpiTbInitializeFacs (); 268 if (ACPI_FAILURE (Status)) 269 { 270 ACPI_WARNING ((AE_INFO, "Could not map the FACS table")); 271 return_ACPI_STATUS (Status); 272 } 273 } 274 275 /* 276 * Initialize ACPI Event handling (Fixed and General Purpose) 277 * 278 * Note1: We must have the hardware and events initialized before we can 279 * execute any control methods safely. Any control method can require 280 * ACPI hardware support, so the hardware must be fully initialized before 281 * any method execution! 282 * 283 * Note2: Fixed events are initialized and enabled here. GPEs are 284 * initialized, but cannot be enabled until after the hardware is 285 * completely initialized (SCI and GlobalLock activated) and the various 286 * initialization control methods are run (_REG, _STA, _INI) on the 287 * entire namespace. 288 */ 289 if (!(Flags & ACPI_NO_EVENT_INIT)) 290 { 291 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 292 "[Init] Initializing ACPI events\n")); 293 294 Status = AcpiEvInitializeEvents (); 295 if (ACPI_FAILURE (Status)) 296 { 297 return_ACPI_STATUS (Status); 298 } 299 } 300 301 /* 302 * Install the SCI handler and Global Lock handler. This completes the 303 * hardware initialization. 304 */ 305 if (!(Flags & ACPI_NO_HANDLER_INIT)) 306 { 307 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 308 "[Init] Installing SCI/GL handlers\n")); 309 310 Status = AcpiEvInstallXruptHandlers (); 311 if (ACPI_FAILURE (Status)) 312 { 313 return_ACPI_STATUS (Status); 314 } 315 } 316 317 #endif /* !ACPI_REDUCED_HARDWARE */ 318 319 return_ACPI_STATUS (Status); 320 } 321 322 ACPI_EXPORT_SYMBOL_INIT (AcpiEnableSubsystem) 323 324 325 /******************************************************************************* 326 * 327 * FUNCTION: AcpiInitializeObjects 328 * 329 * PARAMETERS: Flags - Init/enable Options 330 * 331 * RETURN: Status 332 * 333 * DESCRIPTION: Completes namespace initialization by initializing device 334 * objects and executing AML code for Regions, buffers, etc. 335 * 336 ******************************************************************************/ 337 338 ACPI_STATUS ACPI_INIT_FUNCTION 339 AcpiInitializeObjects ( 340 UINT32 Flags) 341 { 342 ACPI_STATUS Status = AE_OK; 343 344 345 ACPI_FUNCTION_TRACE (AcpiInitializeObjects); 346 347 348 #ifdef ACPI_EXEC_APP 349 /* 350 * This call implements the "initialization file" option for AcpiExec. 351 * This is the precise point that we want to perform the overrides. 352 */ 353 AeDoObjectOverrides (); 354 #endif 355 356 /* 357 * Execute any module-level code that was detected during the table load 358 * phase. Although illegal since ACPI 2.0, there are many machines that 359 * contain this type of code. Each block of detected executable AML code 360 * outside of any control method is wrapped with a temporary control 361 * method object and placed on a global list. The methods on this list 362 * are executed below. 363 * 364 * This case executes the module-level code for all tables only after 365 * all of the tables have been loaded. It is a legacy option and is 366 * not compatible with other ACPI implementations. See AcpiNsLoadTable. 367 */ 368 if (AcpiGbl_GroupModuleLevelCode) 369 { 370 AcpiNsExecModuleCodeList (); 371 372 /* 373 * Initialize the objects that remain uninitialized. This 374 * runs the executable AML that may be part of the 375 * declaration of these objects: 376 * OperationRegions, BufferFields, Buffers, and Packages. 377 */ 378 if (!(Flags & ACPI_NO_OBJECT_INIT)) 379 { 380 Status = AcpiNsInitializeObjects (); 381 if (ACPI_FAILURE (Status)) 382 { 383 return_ACPI_STATUS (Status); 384 } 385 } 386 } 387 388 /* 389 * Initialize all device/region objects in the namespace. This runs 390 * the device _STA and _INI methods and region _REG methods. 391 */ 392 if (!(Flags & (ACPI_NO_DEVICE_INIT | ACPI_NO_ADDRESS_SPACE_INIT))) 393 { 394 Status = AcpiNsInitializeDevices (Flags); 395 if (ACPI_FAILURE (Status)) 396 { 397 return_ACPI_STATUS (Status); 398 } 399 } 400 401 /* 402 * Empty the caches (delete the cached objects) on the assumption that 403 * the table load filled them up more than they will be at runtime -- 404 * thus wasting non-paged memory. 405 */ 406 Status = AcpiPurgeCachedObjects (); 407 408 AcpiGbl_StartupFlags |= ACPI_INITIALIZED_OK; 409 return_ACPI_STATUS (Status); 410 } 411 412 ACPI_EXPORT_SYMBOL_INIT (AcpiInitializeObjects) 413