mirror of https://github.com/acidanthera/audk.git
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
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/** @file
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This is an implementation of the ACPI Support protocol. This is defined in
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the Tiano ACPI External Product Specification, revision 0.3.6.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions
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of the BSD License which accompanies this distribution. The
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full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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//
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// Includes
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//
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#include "AcpiSupport.h"
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//
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// Handle to install ACPI Table Protocol (and ACPI Suppport protocol).
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//
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EFI_HANDLE mHandle = NULL;
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/**
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Entry point of the ACPI support driver. This function creates and initializes an instance of the ACPI Support
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Protocol and installs it on a new handle.
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@param ImageHandle A handle for the image that is initializing this driver
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@param SystemTable A pointer to the EFI system table
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@retval EFI_SUCCESS Driver initialized successfully
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@retval EFI_LOAD_ERROR Failed to Initialize or has been loaded
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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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InstallAcpiSupport (
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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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EFI_STATUS Status;
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EFI_ACPI_SUPPORT_INSTANCE *PrivateData;
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//
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// Initialize our protocol
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//
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PrivateData = AllocateZeroPool (sizeof (EFI_ACPI_SUPPORT_INSTANCE));
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ASSERT (PrivateData);
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PrivateData->Signature = EFI_ACPI_SUPPORT_SIGNATURE;
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//
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// Call all constructors per produced protocols
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//
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Status = AcpiSupportAcpiSupportConstructor (PrivateData);
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if (EFI_ERROR (Status)) {
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gBS->FreePool (PrivateData);
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return EFI_LOAD_ERROR;
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}
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//
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// Install ACPI Table protocol and optional ACPI support protocol based on
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// feature flag: PcdInstallAcpiSupportProtocol.
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//
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if (FeaturePcdGet (PcdInstallAcpiSupportProtocol)) {
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mHandle,
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&gEfiAcpiTableProtocolGuid,
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&PrivateData->AcpiTableProtocol,
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&gEfiAcpiSupportProtocolGuid,
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&PrivateData->AcpiSupport,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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} else {
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Status = gBS->InstallMultipleProtocolInterfaces (
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&mHandle,
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&gEfiAcpiTableProtocolGuid,
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&PrivateData->AcpiTableProtocol,
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NULL
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);
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ASSERT_EFI_ERROR (Status);
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}
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return Status;
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}
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