119 lines
4.2 KiB
C
119 lines
4.2 KiB
C
/** @file
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This code makes the BIOS Data structure available via standard ACPI mechanisms.
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@copyright
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INTEL CONFIDENTIAL
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Copyright 1999 - 2016 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains an 'Intel Peripheral Driver' and is uniquely identified as
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"Intel Reference Module" and is licensed for Intel CPUs and chipsets under
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the terms of your license agreement with Intel or your vendor. This file may
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be modified by the user, subject to additional terms of the license agreement.
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@par Specification Reference:
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**/
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#ifndef _BDAT_ACCESS_HANDLER_H_
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#define _BDAT_ACCESS_HANDLER_H_
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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#include <Library/IoLib.h>
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#include <Library/HobLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Guid/HobList.h>
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#include <IndustryStandard/Acpi30.h>
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#include <Protocol/AcpiTable.h>
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#include <BdatFactory.h>
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#include <Library/PciSegmentLib.h>
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#include <Protocol/BdatAccess.h>
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#include <Protocol/SaPolicy.h>
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#include <Register/SaRegsHostBridge.h>
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///
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/// Ensure proper structure formats
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///
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#pragma pack(push, 1)
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///
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/// BIOS Data ACPI structure
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///
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typedef struct {
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EFI_ACPI_DESCRIPTION_HEADER Header;
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EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE BdatGas;
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} EFI_BDAT_ACPI_DESCRIPTION_TABLE;
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/**
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Entry point of the Bdat table factory.
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@param[in] SaPolicy : A pointer to SA Dxe policy
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@param[in] HobList : A pointer to the HOB list
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@param[in] AcpiTable : A pointer to ACPI table
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@retval EFI_SUCCESS: Driver initialized successfully
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@exception EFI_UNSUPPORTED: A needed driver was not located
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@retval EFI_OUT_OF_RESOURCES: Could not allocate needed resources
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**/
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EFI_STATUS
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CreateBdatTable (
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IN SA_POLICY_PROTOCOL *SaPolicy,
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IN VOID *HobList,
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IN EFI_ACPI_TABLE_PROTOCOL *AcpiTable
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);
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/**
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<b>Entry point of the Bdat Access Handler</b>
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- <b>Introduction</b> \n
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This DXE driver will install an ACPI table which presents BDAT structure provided by MRC.
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- @pre
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- SA_POLICY_PROTOCOL
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- _EFI_ACPI_TABLE_PROTOCOL
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- @result
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Creates the Compatible BIOS data (BDAT) table in the ACPI tables and copies the memory related timing and configuration information into the table.
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@param[in] ImageHandle EFI_HANDLE: A handle for the image that is initializing this driver
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@param[in] SystemTable EFI_SYSTEM_TABLE: A pointer to the EFI system table
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@retval EFI_SUCCESS: Driver initialized successfully
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@exception EFI_UNSUPPORTED: A needed driver was not located
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@retval EFI_OUT_OF_RESOURCES: Could not allocate needed resources
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**/
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EFI_STATUS
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EFIAPI
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BdatAccessHandler (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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///
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/// This is copied from Include\Acpi.h
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///
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#define CREATOR_ID_INTEL 0x4C544E49 /// "LTNI""INTL"(Intel)
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#define CREATOR_REV_INTEL 0x20090903
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#pragma pack(pop)
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#endif /// _BDAT_ACCESS_HANDLER_H_
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