/****************************************************************************** * * Module Name: oswintbl - Windows OSL for obtaining ACPI tables * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * *****************************************************************************/ #ifdef WIN32 #pragma warning(disable:4115) /* warning C4115: (caused by rpcasync.h) */ #include #include #elif WIN64 #include #endif #include "acpi.h" #include "accommon.h" #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME ("oswintbl") static char KeyBuffer[64]; /****************************************************************************** * * FUNCTION: OsGetTable * * PARAMETERS: Signature - ACPI Signature for desired table. must be * a null terminated string. * * RETURN: Pointer to the table. NULL if failure. * * DESCRIPTION: Get an ACPI table from the Windows registry. * *****************************************************************************/ ACPI_TABLE_HEADER * OsGetTable ( char *Signature) { HKEY Handle = NULL; ULONG i; LONG Status; ULONG Type; ULONG NameSize; ULONG DataSize; HKEY SubKey; ACPI_TABLE_HEADER *ReturnTable; /* Get a handle to the table key */ while (1) { ACPI_STRCPY (KeyBuffer, "HARDWARE\\ACPI\\"); ACPI_STRCAT (KeyBuffer, Signature); Status = RegOpenKeyEx (HKEY_LOCAL_MACHINE, KeyBuffer, 0L, KEY_ALL_ACCESS, &Handle); if (Status != ERROR_SUCCESS) { /* * Somewhere along the way, MS changed the registry entry for * the FADT from * HARDWARE/ACPI/FACP to * HARDWARE/ACPI/FADT. * * This code allows for both. */ if (ACPI_COMPARE_NAME (Signature, "FACP")) { Signature = "FADT"; } else { AcpiOsPrintf ("Could not find %s in registry at %s\n", Signature, KeyBuffer); return (NULL); } } else { break; } } /* Actual data for table is down a couple levels */ for (i = 0; ;) { Status = RegEnumKey (Handle, i, KeyBuffer, sizeof (KeyBuffer)); i += 1; if (Status == ERROR_NO_MORE_ITEMS) { break; } Status = RegOpenKey (Handle, KeyBuffer, &SubKey); if (Status != ERROR_SUCCESS) { AcpiOsPrintf ("Could not open %s entry\n", Signature); return (NULL); } RegCloseKey (Handle); Handle = SubKey; i = 0; } /* Find the (binary) table entry */ for (i = 0; ;) { NameSize = sizeof (KeyBuffer); Status = RegEnumValue (Handle, i, KeyBuffer, &NameSize, NULL, &Type, NULL, 0); if (Status != ERROR_SUCCESS) { AcpiOsPrintf ("Could not get %s registry entry\n", Signature); return (NULL); } if (Type == REG_BINARY) { break; } i += 1; } /* Get the size of the table */ Status = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL, NULL, &DataSize); if (Status != ERROR_SUCCESS) { AcpiOsPrintf ("Could not read the %s table size\n", Signature); return (NULL); } /* Allocate a new buffer for the table */ ReturnTable = AcpiOsAllocate (DataSize); if (!ReturnTable) { goto Cleanup; } /* Get the actual table from the registry */ Status = RegQueryValueEx (Handle, KeyBuffer, NULL, NULL, (UCHAR *) ReturnTable, &DataSize); if (Status != ERROR_SUCCESS) { AcpiOsPrintf ("Could not read %s data\n", Signature); AcpiOsFree (ReturnTable); return (NULL); } Cleanup: RegCloseKey (Handle); return (ReturnTable); }