753 lines
26 KiB
C
753 lines
26 KiB
C
/******************************************************************************
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*
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* Module Name: tbfadt - FADT table utilities
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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 - 2010, 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 __TBFADT_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "actables.h"
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#define _COMPONENT ACPI_TABLES
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ACPI_MODULE_NAME ("tbfadt")
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/* Local prototypes */
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static inline void
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AcpiTbInitGenericAddress (
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ACPI_GENERIC_ADDRESS *GenericAddress,
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UINT8 SpaceId,
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UINT8 ByteWidth,
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UINT64 Address);
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static void
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AcpiTbConvertFadt (
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void);
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static void
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AcpiTbValidateFadt (
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void);
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static void
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AcpiTbSetupFadtRegisters (
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void);
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/* Table for conversion of FADT to common internal format and FADT validation */
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typedef struct acpi_fadt_info
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{
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char *Name;
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UINT8 Address64;
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UINT8 Address32;
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UINT8 Length;
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UINT8 DefaultLength;
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UINT8 Type;
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} ACPI_FADT_INFO;
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#define ACPI_FADT_REQUIRED 1
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#define ACPI_FADT_SEPARATE_LENGTH 2
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static ACPI_FADT_INFO FadtInfoTable[] =
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{
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{"Pm1aEventBlock",
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ACPI_FADT_OFFSET (XPm1aEventBlock),
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ACPI_FADT_OFFSET (Pm1aEventBlock),
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ACPI_FADT_OFFSET (Pm1EventLength),
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ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */
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ACPI_FADT_REQUIRED},
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{"Pm1bEventBlock",
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ACPI_FADT_OFFSET (XPm1bEventBlock),
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ACPI_FADT_OFFSET (Pm1bEventBlock),
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ACPI_FADT_OFFSET (Pm1EventLength),
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ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */
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0},
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{"Pm1aControlBlock",
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ACPI_FADT_OFFSET (XPm1aControlBlock),
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ACPI_FADT_OFFSET (Pm1aControlBlock),
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ACPI_FADT_OFFSET (Pm1ControlLength),
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ACPI_PM1_REGISTER_WIDTH,
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ACPI_FADT_REQUIRED},
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{"Pm1bControlBlock",
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ACPI_FADT_OFFSET (XPm1bControlBlock),
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ACPI_FADT_OFFSET (Pm1bControlBlock),
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ACPI_FADT_OFFSET (Pm1ControlLength),
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ACPI_PM1_REGISTER_WIDTH,
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0},
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{"Pm2ControlBlock",
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ACPI_FADT_OFFSET (XPm2ControlBlock),
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ACPI_FADT_OFFSET (Pm2ControlBlock),
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ACPI_FADT_OFFSET (Pm2ControlLength),
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ACPI_PM2_REGISTER_WIDTH,
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ACPI_FADT_SEPARATE_LENGTH},
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{"PmTimerBlock",
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ACPI_FADT_OFFSET (XPmTimerBlock),
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ACPI_FADT_OFFSET (PmTimerBlock),
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ACPI_FADT_OFFSET (PmTimerLength),
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ACPI_PM_TIMER_WIDTH,
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ACPI_FADT_REQUIRED},
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{"Gpe0Block",
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ACPI_FADT_OFFSET (XGpe0Block),
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ACPI_FADT_OFFSET (Gpe0Block),
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ACPI_FADT_OFFSET (Gpe0BlockLength),
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0,
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ACPI_FADT_SEPARATE_LENGTH},
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{"Gpe1Block",
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ACPI_FADT_OFFSET (XGpe1Block),
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ACPI_FADT_OFFSET (Gpe1Block),
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ACPI_FADT_OFFSET (Gpe1BlockLength),
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0,
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ACPI_FADT_SEPARATE_LENGTH}
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};
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#define ACPI_FADT_INFO_ENTRIES \
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(sizeof (FadtInfoTable) / sizeof (ACPI_FADT_INFO))
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/* Table used to split Event Blocks into separate status/enable registers */
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typedef struct acpi_fadt_pm_info
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{
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ACPI_GENERIC_ADDRESS *Target;
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UINT8 Source;
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UINT8 RegisterNum;
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} ACPI_FADT_PM_INFO;
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static ACPI_FADT_PM_INFO FadtPmInfoTable[] =
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{
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{&AcpiGbl_XPm1aStatus,
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ACPI_FADT_OFFSET (XPm1aEventBlock),
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0},
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{&AcpiGbl_XPm1aEnable,
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ACPI_FADT_OFFSET (XPm1aEventBlock),
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1},
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{&AcpiGbl_XPm1bStatus,
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ACPI_FADT_OFFSET (XPm1bEventBlock),
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0},
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{&AcpiGbl_XPm1bEnable,
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ACPI_FADT_OFFSET (XPm1bEventBlock),
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1}
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};
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#define ACPI_FADT_PM_INFO_ENTRIES \
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(sizeof (FadtPmInfoTable) / sizeof (ACPI_FADT_PM_INFO))
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbInitGenericAddress
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*
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* PARAMETERS: GenericAddress - GAS struct to be initialized
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* SpaceId - ACPI Space ID for this register
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* ByteWidth - Width of this register, in bytes
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* Address - Address of the register
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*
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* RETURN: None
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*
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* DESCRIPTION: Initialize a Generic Address Structure (GAS)
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* See the ACPI specification for a full description and
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* definition of this structure.
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*
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******************************************************************************/
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static inline void
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AcpiTbInitGenericAddress (
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ACPI_GENERIC_ADDRESS *GenericAddress,
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UINT8 SpaceId,
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UINT8 ByteWidth,
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UINT64 Address)
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{
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/*
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* The 64-bit Address field is non-aligned in the byte packed
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* GAS struct.
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*/
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ACPI_MOVE_64_TO_64 (&GenericAddress->Address, &Address);
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/* All other fields are byte-wide */
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GenericAddress->SpaceId = SpaceId;
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GenericAddress->BitWidth = (UINT8) ACPI_MUL_8 (ByteWidth);
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GenericAddress->BitOffset = 0;
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GenericAddress->AccessWidth = 0; /* Access width ANY */
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbParseFadt
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*
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* PARAMETERS: TableIndex - Index for the FADT
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*
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* RETURN: None
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*
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* DESCRIPTION: Initialize the FADT, DSDT and FACS tables
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* (FADT contains the addresses of the DSDT and FACS)
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*
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******************************************************************************/
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void
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AcpiTbParseFadt (
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UINT32 TableIndex)
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{
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UINT32 Length;
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ACPI_TABLE_HEADER *Table;
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/*
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* The FADT has multiple versions with different lengths,
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* and it contains pointers to both the DSDT and FACS tables.
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*
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* Get a local copy of the FADT and convert it to a common format
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* Map entire FADT, assumed to be smaller than one page.
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*/
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Length = AcpiGbl_RootTableList.Tables[TableIndex].Length;
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Table = AcpiOsMapMemory (
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AcpiGbl_RootTableList.Tables[TableIndex].Address, Length);
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if (!Table)
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{
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return;
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}
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/*
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* Validate the FADT checksum before we copy the table. Ignore
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* checksum error as we want to try to get the DSDT and FACS.
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*/
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(void) AcpiTbVerifyChecksum (Table, Length);
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/* Create a local copy of the FADT in common ACPI 2.0+ format */
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AcpiTbCreateLocalFadt (Table, Length);
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/* All done with the real FADT, unmap it */
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AcpiOsUnmapMemory (Table, Length);
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/* Obtain the DSDT and FACS tables via their addresses within the FADT */
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AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XDsdt,
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ACPI_SIG_DSDT, ACPI_TABLE_INDEX_DSDT);
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AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XFacs,
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ACPI_SIG_FACS, ACPI_TABLE_INDEX_FACS);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbCreateLocalFadt
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*
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* PARAMETERS: Table - Pointer to BIOS FADT
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* Length - Length of the table
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*
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* RETURN: None
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*
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* DESCRIPTION: Get a local copy of the FADT and convert it to a common format.
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* Performs validation on some important FADT fields.
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*
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* NOTE: We create a local copy of the FADT regardless of the version.
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*
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******************************************************************************/
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void
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AcpiTbCreateLocalFadt (
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ACPI_TABLE_HEADER *Table,
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UINT32 Length)
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{
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/*
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* Check if the FADT is larger than the largest table that we expect
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* (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
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* a warning.
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*/
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if (Length > sizeof (ACPI_TABLE_FADT))
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{
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ACPI_WARNING ((AE_INFO,
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"FADT (revision %u) is longer than ACPI 2.0 version, "
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"truncating length %u to %u",
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Table->Revision, Length, (UINT32) sizeof (ACPI_TABLE_FADT)));
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}
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/* Clear the entire local FADT */
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ACPI_MEMSET (&AcpiGbl_FADT, 0, sizeof (ACPI_TABLE_FADT));
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/* Copy the original FADT, up to sizeof (ACPI_TABLE_FADT) */
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ACPI_MEMCPY (&AcpiGbl_FADT, Table,
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ACPI_MIN (Length, sizeof (ACPI_TABLE_FADT)));
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/* Convert the local copy of the FADT to the common internal format */
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AcpiTbConvertFadt ();
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/* Validate FADT values now, before we make any changes */
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AcpiTbValidateFadt ();
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/* Initialize the global ACPI register structures */
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AcpiTbSetupFadtRegisters ();
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiTbConvertFadt
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*
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* PARAMETERS: None, uses AcpiGbl_FADT
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*
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* RETURN: None
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*
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* DESCRIPTION: Converts all versions of the FADT to a common internal format.
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* Expand 32-bit addresses to 64-bit as necessary.
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*
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* NOTE: AcpiGbl_FADT must be of size (ACPI_TABLE_FADT),
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* and must contain a copy of the actual FADT.
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*
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* Notes on 64-bit register addresses:
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*
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* After this FADT conversion, later ACPICA code will only use the 64-bit "X"
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* fields of the FADT for all ACPI register addresses.
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*
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* The 64-bit "X" fields are optional extensions to the original 32-bit FADT
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* V1.0 fields. Even if they are present in the FADT, they are optional and
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* are unused if the BIOS sets them to zero. Therefore, we must copy/expand
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* 32-bit V1.0 fields if the corresponding X field is zero.
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*
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* For ACPI 1.0 FADTs, all 32-bit address fields are expanded to the
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* corresponding "X" fields in the internal FADT.
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*
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* For ACPI 2.0+ FADTs, all valid (non-zero) 32-bit address fields are expanded
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* to the corresponding 64-bit X fields. For compatibility with other ACPI
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* implementations, we ignore the 64-bit field if the 32-bit field is valid,
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* regardless of whether the host OS is 32-bit or 64-bit.
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*
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******************************************************************************/
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static void
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AcpiTbConvertFadt (
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void)
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{
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ACPI_GENERIC_ADDRESS *Address64;
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UINT32 Address32;
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UINT32 i;
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/* Update the local FADT table header length */
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AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT);
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/*
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* Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary.
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* Later code will always use the X 64-bit field.
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*/
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if (!AcpiGbl_FADT.XFacs)
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{
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AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
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}
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if (!AcpiGbl_FADT.XDsdt)
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{
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AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
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}
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/*
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* For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
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* should be zero are indeed zero. This will workaround BIOSs that
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* inadvertently place values in these fields.
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*
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* The ACPI 1.0 reserved fields that will be zeroed are the bytes located
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* at offset 45, 55, 95, and the word located at offset 109, 110.
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*/
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if (AcpiGbl_FADT.Header.Revision < 3)
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{
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AcpiGbl_FADT.PreferredProfile = 0;
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AcpiGbl_FADT.PstateControl = 0;
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AcpiGbl_FADT.CstControl = 0;
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AcpiGbl_FADT.BootFlags = 0;
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}
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/*
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* Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X"
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* generic address structures as necessary. Later code will always use
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* the 64-bit address structures.
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*
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* March 2009:
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* We now always use the 32-bit address if it is valid (non-null). This
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* is not in accordance with the ACPI specification which states that
|
|
* the 64-bit address supersedes the 32-bit version, but we do this for
|
|
* compatibility with other ACPI implementations. Most notably, in the
|
|
* case where both the 32 and 64 versions are non-null, we use the 32-bit
|
|
* version. This is the only address that is guaranteed to have been
|
|
* tested by the BIOS manufacturer.
|
|
*/
|
|
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
|
|
{
|
|
Address32 = *ACPI_ADD_PTR (UINT32,
|
|
&AcpiGbl_FADT, FadtInfoTable[i].Address32);
|
|
|
|
Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS,
|
|
&AcpiGbl_FADT, FadtInfoTable[i].Address64);
|
|
|
|
/*
|
|
* If both 32- and 64-bit addresses are valid (non-zero),
|
|
* they must match.
|
|
*/
|
|
if (Address64->Address && Address32 &&
|
|
(Address64->Address != (UINT64) Address32))
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"32/64X address mismatch in %s: 0x%8.8X/0x%8.8X%8.8X, using 32",
|
|
FadtInfoTable[i].Name, Address32,
|
|
ACPI_FORMAT_UINT64 (Address64->Address)));
|
|
}
|
|
|
|
/* Always use 32-bit address if it is valid (non-null) */
|
|
|
|
if (Address32)
|
|
{
|
|
/*
|
|
* Copy the 32-bit address to the 64-bit GAS structure. The
|
|
* Space ID is always I/O for 32-bit legacy address fields
|
|
*/
|
|
AcpiTbInitGenericAddress (Address64, ACPI_ADR_SPACE_SYSTEM_IO,
|
|
*ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtInfoTable[i].Length),
|
|
(UINT64) Address32);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbValidateFadt
|
|
*
|
|
* PARAMETERS: Table - Pointer to the FADT to be validated
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Validate various important fields within the FADT. If a problem
|
|
* is found, issue a message, but no status is returned.
|
|
* Used by both the table manager and the disassembler.
|
|
*
|
|
* Possible additional checks:
|
|
* (AcpiGbl_FADT.Pm1EventLength >= 4)
|
|
* (AcpiGbl_FADT.Pm1ControlLength >= 2)
|
|
* (AcpiGbl_FADT.PmTimerLength >= 4)
|
|
* Gpe block lengths must be multiple of 2
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiTbValidateFadt (
|
|
void)
|
|
{
|
|
char *Name;
|
|
ACPI_GENERIC_ADDRESS *Address64;
|
|
UINT8 Length;
|
|
UINT32 i;
|
|
|
|
|
|
/*
|
|
* Check for FACS and DSDT address mismatches. An address mismatch between
|
|
* the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and
|
|
* DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables.
|
|
*/
|
|
if (AcpiGbl_FADT.Facs &&
|
|
(AcpiGbl_FADT.XFacs != (UINT64) AcpiGbl_FADT.Facs))
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"32/64X FACS address mismatch in FADT - "
|
|
"0x%8.8X/0x%8.8X%8.8X, using 32",
|
|
AcpiGbl_FADT.Facs, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XFacs)));
|
|
|
|
AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
|
|
}
|
|
|
|
if (AcpiGbl_FADT.Dsdt &&
|
|
(AcpiGbl_FADT.XDsdt != (UINT64) AcpiGbl_FADT.Dsdt))
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"32/64X DSDT address mismatch in FADT - "
|
|
"0x%8.8X/0x%8.8X%8.8X, using 32",
|
|
AcpiGbl_FADT.Dsdt, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XDsdt)));
|
|
|
|
AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
|
|
}
|
|
|
|
/* Examine all of the 64-bit extended address fields (X fields) */
|
|
|
|
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
|
|
{
|
|
/*
|
|
* Generate pointer to the 64-bit address, get the register
|
|
* length (width) and the register name
|
|
*/
|
|
Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS,
|
|
&AcpiGbl_FADT, FadtInfoTable[i].Address64);
|
|
Length = *ACPI_ADD_PTR (UINT8,
|
|
&AcpiGbl_FADT, FadtInfoTable[i].Length);
|
|
Name = FadtInfoTable[i].Name;
|
|
|
|
/*
|
|
* For each extended field, check for length mismatch between the
|
|
* legacy length field and the corresponding 64-bit X length field.
|
|
*/
|
|
if (Address64->Address &&
|
|
(Address64->BitWidth != ACPI_MUL_8 (Length)))
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"32/64X length mismatch in %s: %u/%u",
|
|
Name, ACPI_MUL_8 (Length), Address64->BitWidth));
|
|
}
|
|
|
|
if (FadtInfoTable[i].Type & ACPI_FADT_REQUIRED)
|
|
{
|
|
/*
|
|
* Field is required (PM1aEvent, PM1aControl, PmTimer).
|
|
* Both the address and length must be non-zero.
|
|
*/
|
|
if (!Address64->Address || !Length)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Required field %s has zero address and/or length:"
|
|
" 0x%8.8X%8.8X/0x%X",
|
|
Name, ACPI_FORMAT_UINT64 (Address64->Address), Length));
|
|
}
|
|
}
|
|
else if (FadtInfoTable[i].Type & ACPI_FADT_SEPARATE_LENGTH)
|
|
{
|
|
/*
|
|
* Field is optional (PM2Control, GPE0, GPE1) AND has its own
|
|
* length field. If present, both the address and length must
|
|
* be valid.
|
|
*/
|
|
if ((Address64->Address && !Length) ||
|
|
(!Address64->Address && Length))
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Optional field %s has zero address or length: "
|
|
"0x%8.8X%8.8X/0x%X",
|
|
Name, ACPI_FORMAT_UINT64 (Address64->Address), Length));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbSetupFadtRegisters
|
|
*
|
|
* PARAMETERS: None, uses AcpiGbl_FADT.
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Initialize global ACPI PM1 register definitions. Optionally,
|
|
* force FADT register definitions to their default lengths.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiTbSetupFadtRegisters (
|
|
void)
|
|
{
|
|
ACPI_GENERIC_ADDRESS *Target64;
|
|
ACPI_GENERIC_ADDRESS *Source64;
|
|
UINT8 Pm1RegisterByteWidth;
|
|
UINT32 i;
|
|
|
|
|
|
/*
|
|
* Optionally check all register lengths against the default values and
|
|
* update them if they are incorrect.
|
|
*/
|
|
if (AcpiGbl_UseDefaultRegisterWidths)
|
|
{
|
|
for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
|
|
{
|
|
Target64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT,
|
|
FadtInfoTable[i].Address64);
|
|
|
|
/*
|
|
* If a valid register (Address != 0) and the (DefaultLength > 0)
|
|
* (Not a GPE register), then check the width against the default.
|
|
*/
|
|
if ((Target64->Address) &&
|
|
(FadtInfoTable[i].DefaultLength > 0) &&
|
|
(FadtInfoTable[i].DefaultLength != Target64->BitWidth))
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Invalid length for %s: %u, using default %u",
|
|
FadtInfoTable[i].Name, Target64->BitWidth,
|
|
FadtInfoTable[i].DefaultLength));
|
|
|
|
/* Incorrect size, set width to the default */
|
|
|
|
Target64->BitWidth = FadtInfoTable[i].DefaultLength;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the length of the individual PM1 registers (enable and status).
|
|
* Each register is defined to be (event block length / 2). Extra divide
|
|
* by 8 converts bits to bytes.
|
|
*/
|
|
Pm1RegisterByteWidth = (UINT8)
|
|
ACPI_DIV_16 (AcpiGbl_FADT.XPm1aEventBlock.BitWidth);
|
|
|
|
/*
|
|
* Calculate separate GAS structs for the PM1x (A/B) Status and Enable
|
|
* registers. These addresses do not appear (directly) in the FADT, so it
|
|
* is useful to pre-calculate them from the PM1 Event Block definitions.
|
|
*
|
|
* The PM event blocks are split into two register blocks, first is the
|
|
* PM Status Register block, followed immediately by the PM Enable
|
|
* Register block. Each is of length (Pm1EventLength/2)
|
|
*
|
|
* Note: The PM1A event block is required by the ACPI specification.
|
|
* However, the PM1B event block is optional and is rarely, if ever,
|
|
* used.
|
|
*/
|
|
|
|
for (i = 0; i < ACPI_FADT_PM_INFO_ENTRIES; i++)
|
|
{
|
|
Source64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT,
|
|
FadtPmInfoTable[i].Source);
|
|
|
|
if (Source64->Address)
|
|
{
|
|
AcpiTbInitGenericAddress (FadtPmInfoTable[i].Target,
|
|
Source64->SpaceId, Pm1RegisterByteWidth,
|
|
Source64->Address +
|
|
(FadtPmInfoTable[i].RegisterNum * Pm1RegisterByteWidth));
|
|
}
|
|
}
|
|
}
|
|
|