892 lines
25 KiB
C
892 lines
25 KiB
C
/******************************************************************************
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*
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* Module Name: tbget - ACPI Table get* routines
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* $Revision: 52 $
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __TBGET_C__
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#include "acpi.h"
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#include "achware.h"
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#include "actables.h"
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#define _COMPONENT ACPI_TABLES
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MODULE_NAME ("tbget")
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#define RSDP_CHECKSUM_LENGTH 20
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbGetTablePtr
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*
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* PARAMETERS: TableType - one of the defined table types
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* Instance - Which table of this type
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* TablePtrLoc - pointer to location to place the pointer for
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* return
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the pointer to an ACPI table.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTablePtr (
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ACPI_TABLE_TYPE TableType,
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UINT32 Instance,
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ACPI_TABLE_HEADER **TablePtrLoc)
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{
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ACPI_TABLE_DESC *TableDesc;
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UINT32 i;
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FUNCTION_TRACE ("TbGetTablePtr");
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if (!AcpiGbl_DSDT)
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{
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return_ACPI_STATUS (AE_NO_ACPI_TABLES);
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}
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if (TableType > ACPI_TABLE_MAX)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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/*
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* For all table types (Single/Multiple), the first
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* instance is always in the list head.
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*/
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if (Instance == 1)
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{
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/*
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* Just pluck the pointer out of the global table!
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* Will be null if no table is present
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*/
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*TablePtrLoc = AcpiGbl_AcpiTables[TableType].Pointer;
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* Check for instance out of range
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*/
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if (Instance > AcpiGbl_AcpiTables[TableType].Count)
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{
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return_ACPI_STATUS (AE_NOT_EXIST);
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}
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/* Walk the list to get the desired table
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* Since the if (Instance == 1) check above checked for the
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* first table, setting TableDesc equal to the .Next member
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* is actually pointing to the second table. Therefore, we
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* need to walk from the 2nd table until we reach the Instance
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* that the user is looking for and return its table pointer.
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*/
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TableDesc = AcpiGbl_AcpiTables[TableType].Next;
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for (i = 2; i < Instance; i++)
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{
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TableDesc = TableDesc->Next;
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}
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/* We are now pointing to the requested table's descriptor */
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*TablePtrLoc = TableDesc->Pointer;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbGetTable
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*
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* PARAMETERS: PhysicalAddress - Physical address of table to retrieve
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* *BufferPtr - If BufferPtr is valid, read data from
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* buffer rather than searching memory
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* *TableInfo - Where the table info is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Maps the physical address of table into a logical address
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetTable (
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ACPI_PHYSICAL_ADDRESS PhysicalAddress,
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ACPI_TABLE_HEADER *BufferPtr,
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ACPI_TABLE_DESC *TableInfo)
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{
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ACPI_TABLE_HEADER *TableHeader = NULL;
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ACPI_TABLE_HEADER *FullTable = NULL;
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UINT32 Size;
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UINT8 Allocation;
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ACPI_STATUS Status = AE_OK;
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FUNCTION_TRACE ("TbGetTable");
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if (!TableInfo)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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if (BufferPtr)
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{
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/*
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* Getting data from a buffer, not BIOS tables
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*/
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TableHeader = BufferPtr;
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Status = AcpiTbValidateTableHeader (TableHeader);
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if (ACPI_FAILURE (Status))
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{
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/* Table failed verification, map all errors to BAD_DATA */
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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/* Allocate buffer for the entire table */
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FullTable = ACPI_MEM_ALLOCATE (TableHeader->Length);
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if (!FullTable)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Copy the entire table (including header) to the local buffer */
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Size = TableHeader->Length;
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MEMCPY (FullTable, BufferPtr, Size);
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/* Save allocation type */
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Allocation = ACPI_MEM_ALLOCATED;
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}
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/*
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* Not reading from a buffer, just map the table's physical memory
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* into our address space.
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*/
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else
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{
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Size = SIZE_IN_HEADER;
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Status = AcpiTbMapAcpiTable (PhysicalAddress, &Size, &FullTable);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Save allocation type */
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Allocation = ACPI_MEM_MAPPED;
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}
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/* Return values */
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TableInfo->Pointer = FullTable;
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TableInfo->Length = Size;
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TableInfo->Allocation = Allocation;
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TableInfo->BasePointer = FullTable;
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbGetAllTables
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*
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* PARAMETERS: NumberOfTables - Number of tables to get
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* TablePtr - Input buffer pointer, optional
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must
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* already be loaded and validated.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbGetAllTables (
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UINT32 NumberOfTables,
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ACPI_TABLE_HEADER *TablePtr)
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{
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ACPI_STATUS Status = AE_OK;
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UINT32 Index;
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ACPI_TABLE_DESC TableInfo;
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FUNCTION_TRACE ("TbGetAllTables");
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Number of tables: %d\n", NumberOfTables));
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/*
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* Loop through all table pointers found in RSDT.
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* This will NOT include the FACS and DSDT - we must get
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* them after the loop
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*/
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for (Index = 0; Index < NumberOfTables; Index++)
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{
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/* Clear the TableInfo each time */
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MEMSET (&TableInfo, 0, sizeof (ACPI_TABLE_DESC));
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/* Get the table via the XSDT */
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Status = AcpiTbGetTable ((ACPI_PHYSICAL_ADDRESS)
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ACPI_GET_ADDRESS (AcpiGbl_XSDT->TableOffsetEntry[Index]),
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TablePtr, &TableInfo);
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/* Ignore a table that failed verification */
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if (Status == AE_BAD_DATA)
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{
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continue;
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}
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/* However, abort on serious errors */
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Recognize and install the table */
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Status = AcpiTbInstallTable (TablePtr, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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/*
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* Unrecognized or unsupported table, delete it and ignore the
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* error. Just get as many tables as we can, later we will
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* determine if there are enough tables to continue.
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*/
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AcpiTbUninstallTable (&TableInfo);
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}
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}
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/*
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* Convert the FADT to a common format. This allows earlier revisions of the
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* table to coexist with newer versions, using common access code.
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*/
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Status = AcpiTbConvertTableFadt ();
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* Get the minimum set of ACPI tables, namely:
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*
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* 1) FADT (via RSDT in loop above)
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* 2) FACS
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* 3) DSDT
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*
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*/
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/*
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* Get the FACS (must have the FADT first, from loop above)
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* AcpiTbGetTableFacs will fail if FADT pointer is not valid
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*/
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Status = AcpiTbGetTableFacs (TablePtr, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Install the FACS */
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Status = AcpiTbInstallTable (TablePtr, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* Create the common FACS pointer table
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* (Contains pointers to the original table)
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*/
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Status = AcpiTbBuildCommonFacs (&TableInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* Get the DSDT (We know that the FADT is valid now)
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*/
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Status = AcpiTbGetTable ((ACPI_PHYSICAL_ADDRESS) ACPI_GET_ADDRESS (AcpiGbl_FADT->XDsdt),
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TablePtr, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Install the DSDT */
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Status = AcpiTbInstallTable (TablePtr, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Dump the DSDT Header */
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ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Hex dump of DSDT Header:\n"));
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DUMP_BUFFER ((UINT8 *) AcpiGbl_DSDT, sizeof (ACPI_TABLE_HEADER));
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/* Dump the entire DSDT */
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ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
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"Hex dump of DSDT (After header), size %d (%x)\n",
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AcpiGbl_DSDT->Length, AcpiGbl_DSDT->Length));
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DUMP_BUFFER ((UINT8 *) (AcpiGbl_DSDT + 1), AcpiGbl_DSDT->Length);
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/*
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* Initialize the capabilities flags.
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* Assumes that platform supports ACPI_MODE since we have tables!
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*/
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AcpiGbl_SystemFlags |= AcpiHwGetModeCapabilities ();
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/* Always delete the RSDP mapping, we are done with it */
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AcpiTbDeleteAcpiTable (ACPI_TABLE_RSDP);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbVerifyRsdp
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*
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* PARAMETERS: NumberOfTables - Where the table count is placed
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*
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* RETURN: Status
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*
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* DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiTbVerifyRsdp (
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ACPI_PHYSICAL_ADDRESS RsdpPhysicalAddress)
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{
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ACPI_TABLE_DESC TableInfo;
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ACPI_STATUS Status;
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UINT8 *TablePtr;
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FUNCTION_TRACE ("AcpiTbVerifyRsdp");
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/*
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* Obtain access to the RSDP structure
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*/
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Status = AcpiOsMapMemory (RsdpPhysicalAddress, sizeof (RSDP_DESCRIPTOR),
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(void **) &TablePtr);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* The signature and checksum must both be correct
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*/
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if (STRNCMP ((NATIVE_CHAR *) TablePtr, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0)
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{
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/* Nope, BAD Signature */
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Status = AE_BAD_SIGNATURE;
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goto Cleanup;
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}
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if (AcpiTbChecksum (TablePtr, RSDP_CHECKSUM_LENGTH) != 0)
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{
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/* Nope, BAD Checksum */
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Status = AE_BAD_CHECKSUM;
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goto Cleanup;
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}
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/* TBD: Check extended checksum if table version >= 2 */
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/* The RSDP supplied is OK */
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TableInfo.Pointer = (ACPI_TABLE_HEADER *) TablePtr;
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TableInfo.Length = sizeof (RSDP_DESCRIPTOR);
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TableInfo.Allocation = ACPI_MEM_MAPPED;
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TableInfo.BasePointer = TablePtr;
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/* Save the table pointers and allocation info */
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Status = AcpiTbInitTableDescriptor (ACPI_TABLE_RSDP, &TableInfo);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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|
/* Save the RSDP in a global for easy access */
|
|
|
|
AcpiGbl_RSDP = (RSDP_DESCRIPTOR *) TableInfo.Pointer;
|
|
return_ACPI_STATUS (Status);
|
|
|
|
|
|
/* Error exit */
|
|
Cleanup:
|
|
|
|
AcpiOsUnmapMemory (TablePtr, sizeof (RSDP_DESCRIPTOR));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbGetRsdtAddress
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: RSDT physical address
|
|
*
|
|
* DESCRIPTION: Extract the address of the RSDT or XSDT, depending on the
|
|
* version of the RSDP
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_PHYSICAL_ADDRESS
|
|
AcpiTbGetRsdtAddress (void)
|
|
{
|
|
ACPI_PHYSICAL_ADDRESS PhysicalAddress;
|
|
|
|
|
|
/*
|
|
* For RSDP revision 0 or 1, we use the RSDT.
|
|
* For RSDP revision 2 (and above), we use the XSDT
|
|
*/
|
|
if (AcpiGbl_RSDP->Revision < 2)
|
|
{
|
|
#ifdef _IA64
|
|
/* 0.71 RSDP has 64bit Rsdt address field */
|
|
PhysicalAddress = ((RSDP_DESCRIPTOR_REV071 *)AcpiGbl_RSDP)->RsdtPhysicalAddress;
|
|
#else
|
|
PhysicalAddress = (ACPI_PHYSICAL_ADDRESS) AcpiGbl_RSDP->RsdtPhysicalAddress;
|
|
#endif
|
|
}
|
|
|
|
else
|
|
{
|
|
PhysicalAddress = (ACPI_PHYSICAL_ADDRESS)
|
|
ACPI_GET_ADDRESS (AcpiGbl_RSDP->XsdtPhysicalAddress);
|
|
}
|
|
|
|
|
|
return (PhysicalAddress);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbValidateRsdt
|
|
*
|
|
* PARAMETERS: TablePtr - Addressable pointer to the RSDT.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Validate signature for the RSDT or XSDT
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbValidateRsdt (
|
|
ACPI_TABLE_HEADER *TablePtr)
|
|
{
|
|
UINT32 NoMatch;
|
|
|
|
PROC_NAME ("TbValidateRsdt");
|
|
|
|
|
|
/*
|
|
* For RSDP revision 0 or 1, we use the RSDT.
|
|
* For RSDP revision 2 (and above), we use the XSDT
|
|
*/
|
|
if (AcpiGbl_RSDP->Revision < 2)
|
|
{
|
|
NoMatch = STRNCMP ((char *) TablePtr, RSDT_SIG,
|
|
sizeof (RSDT_SIG) -1);
|
|
}
|
|
else
|
|
{
|
|
NoMatch = STRNCMP ((char *) TablePtr, XSDT_SIG,
|
|
sizeof (XSDT_SIG) -1);
|
|
}
|
|
|
|
|
|
if (NoMatch)
|
|
{
|
|
/* Invalid RSDT or XSDT signature */
|
|
|
|
REPORT_ERROR (("Invalid signature where RSDP indicates RSDT/XSDT should be located\n"));
|
|
|
|
DUMP_BUFFER (AcpiGbl_RSDP, 20);
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ERROR,
|
|
"RSDT/XSDT signature at %X is invalid\n",
|
|
AcpiGbl_RSDP->RsdtPhysicalAddress));
|
|
|
|
return (AE_BAD_SIGNATURE);
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbGetTablePointer
|
|
*
|
|
* PARAMETERS: PhysicalAddress - Address from RSDT
|
|
* Flags - virtual or physical addressing
|
|
* TablePtr - Addressable address (output)
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create an addressable pointer to an ACPI table
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbGetTablePointer (
|
|
ACPI_PHYSICAL_ADDRESS PhysicalAddress,
|
|
UINT32 Flags,
|
|
UINT32 *Size,
|
|
ACPI_TABLE_HEADER **TablePtr)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
|
|
if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING)
|
|
{
|
|
*Size = SIZE_IN_HEADER;
|
|
Status = AcpiTbMapAcpiTable (PhysicalAddress, Size, TablePtr);
|
|
}
|
|
|
|
else
|
|
{
|
|
*Size = 0;
|
|
*TablePtr = (ACPI_TABLE_HEADER *) (ACPI_TBLPTR) PhysicalAddress;
|
|
|
|
Status = AE_OK;
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbGetTableRsdt
|
|
*
|
|
* PARAMETERS: NumberOfTables - Where the table count is placed
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbGetTableRsdt (
|
|
UINT32 *NumberOfTables)
|
|
{
|
|
ACPI_TABLE_DESC TableInfo;
|
|
ACPI_STATUS Status;
|
|
ACPI_PHYSICAL_ADDRESS PhysicalAddress;
|
|
|
|
|
|
FUNCTION_TRACE ("TbGetTableRsdt");
|
|
|
|
|
|
/*
|
|
* Get the RSDT from the RSDP
|
|
*/
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"RSDP located at %p, RSDT physical=%8.8lX%8.8lX \n",
|
|
AcpiGbl_RSDP, HIDWORD(AcpiGbl_RSDP->RsdtPhysicalAddress),
|
|
LODWORD(AcpiGbl_RSDP->RsdtPhysicalAddress)));
|
|
|
|
|
|
PhysicalAddress = AcpiTbGetRsdtAddress ();
|
|
|
|
|
|
/* Get the RSDT/XSDT */
|
|
|
|
Status = AcpiTbGetTable (PhysicalAddress, NULL, &TableInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not get the RSDT, %s\n",
|
|
AcpiFormatException (Status)));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/* Check the RSDT or XSDT signature */
|
|
|
|
Status = AcpiTbValidateRsdt (TableInfo.Pointer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*
|
|
* Valid RSDT signature, verify the checksum. If it fails, just
|
|
* print a warning and ignore it.
|
|
*/
|
|
Status = AcpiTbVerifyTableChecksum (TableInfo.Pointer);
|
|
|
|
|
|
/* Convert and/or copy to an XSDT structure */
|
|
|
|
Status = AcpiTbConvertToXsdt (&TableInfo, NumberOfTables);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Save the table pointers and allocation info */
|
|
|
|
Status = AcpiTbInitTableDescriptor (ACPI_TABLE_XSDT, &TableInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
AcpiGbl_XSDT = (XSDT_DESCRIPTOR *) TableInfo.Pointer;
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "XSDT located at %p\n", AcpiGbl_XSDT));
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbGetTableFacs
|
|
*
|
|
* PARAMETERS: *BufferPtr - If BufferPtr is valid, read data from
|
|
* buffer rather than searching memory
|
|
* *TableInfo - Where the table info is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Returns a pointer to the FACS as defined in FADT. This
|
|
* function assumes the global variable FADT has been
|
|
* correctly initialized. The value of FADT->FirmwareCtrl
|
|
* into a far pointer which is returned.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbGetTableFacs (
|
|
ACPI_TABLE_HEADER *BufferPtr,
|
|
ACPI_TABLE_DESC *TableInfo)
|
|
{
|
|
ACPI_TABLE_HEADER *TablePtr = NULL;
|
|
UINT32 Size;
|
|
UINT8 Allocation;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
FUNCTION_TRACE ("TbGetTableFacs");
|
|
|
|
|
|
/* Must have a valid FADT pointer */
|
|
|
|
if (!AcpiGbl_FADT)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
|
|
}
|
|
|
|
Size = sizeof (FACS_DESCRIPTOR);
|
|
if (BufferPtr)
|
|
{
|
|
/*
|
|
* Getting table from a file -- allocate a buffer and
|
|
* read the table.
|
|
*/
|
|
TablePtr = ACPI_MEM_ALLOCATE (Size);
|
|
if(!TablePtr)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
MEMCPY (TablePtr, BufferPtr, Size);
|
|
|
|
/* Save allocation type */
|
|
|
|
Allocation = ACPI_MEM_ALLOCATED;
|
|
}
|
|
|
|
else
|
|
{
|
|
/* Just map the physical memory to our address space */
|
|
|
|
Status = AcpiTbMapAcpiTable ((ACPI_PHYSICAL_ADDRESS) ACPI_GET_ADDRESS (AcpiGbl_FADT->XFirmwareCtrl),
|
|
&Size, &TablePtr);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Save allocation type */
|
|
|
|
Allocation = ACPI_MEM_MAPPED;
|
|
}
|
|
|
|
|
|
/* Return values */
|
|
|
|
TableInfo->Pointer = TablePtr;
|
|
TableInfo->Length = Size;
|
|
TableInfo->Allocation = Allocation;
|
|
TableInfo->BasePointer = TablePtr;
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|