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107 lines
3.9 KiB
C
107 lines
3.9 KiB
C
/** @file
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SMM driver instance of SmiHandlerProfile Library.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiSmm.h>
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#include <Library/SmiHandlerProfileLib.h>
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#include <Library/SmmServicesTableLib.h>
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#include <Guid/SmiHandlerProfile.h>
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SMI_HANDLER_PROFILE_PROTOCOL *mSmiHandlerProfile;
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/**
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This function is called by SmmChildDispatcher module to report
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a new SMI handler is registered, to SmmCore.
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@param HandlerGuid The GUID to identify the type of the handler.
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For the SmmChildDispatch protocol, the HandlerGuid
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must be the GUID of SmmChildDispatch protocol.
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@param Handler The SMI handler.
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@param CallerAddress The address of the module who registers the SMI handler.
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@param Context The context of the SMI handler.
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For the SmmChildDispatch protocol, the Context
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must match the one defined for SmmChildDispatch protocol.
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@param ContextSize The size of the context in bytes.
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For the SmmChildDispatch protocol, the Context
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must match the one defined for SmmChildDispatch protocol.
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@retval EFI_SUCCESS The information is recorded.
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@retval EFI_UNSUPPORTED The feature is unsupported.
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@retval EFI_OUT_OF_RESOURCES There is no enough resource to record the information.
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**/
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EFI_STATUS
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EFIAPI
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SmiHandlerProfileRegisterHandler (
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IN EFI_GUID *HandlerGuid,
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IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
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IN PHYSICAL_ADDRESS CallerAddress,
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IN VOID *Context, OPTIONAL
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IN UINTN ContextSize OPTIONAL
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)
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{
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if (mSmiHandlerProfile != NULL) {
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return mSmiHandlerProfile->RegisterHandler (mSmiHandlerProfile, HandlerGuid, Handler, CallerAddress, Context, ContextSize);
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}
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return EFI_UNSUPPORTED;
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}
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/**
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This function is called by SmmChildDispatcher module to report
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an existing SMI handler is unregistered, to SmmCore.
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@param HandlerGuid The GUID to identify the type of the handler.
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For the SmmChildDispatch protocol, the HandlerGuid
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must be the GUID of SmmChildDispatch protocol.
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@param Handler The SMI handler.
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@param Context The context of the SMI handler.
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If it is NOT NULL, it will be used to check what is registered.
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@param ContextSize The size of the context in bytes.
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If Context is NOT NULL, it will be used to check what is registered.
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@retval EFI_SUCCESS The original record is removed.
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@retval EFI_UNSUPPORTED The feature is unsupported.
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@retval EFI_NOT_FOUND There is no record for the HandlerGuid and handler.
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**/
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EFI_STATUS
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EFIAPI
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SmiHandlerProfileUnregisterHandler (
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IN EFI_GUID *HandlerGuid,
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IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
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IN VOID *Context, OPTIONAL
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IN UINTN ContextSize OPTIONAL
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)
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{
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if (mSmiHandlerProfile != NULL) {
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return mSmiHandlerProfile->UnregisterHandler (mSmiHandlerProfile, HandlerGuid, Handler, Context, ContextSize);
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}
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return EFI_UNSUPPORTED;
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}
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/**
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The constructor function for SMI handler profile.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
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**/
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EFI_STATUS
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EFIAPI
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SmmSmiHandlerProfileLibConstructor (
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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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gSmst->SmmLocateProtocol (
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&gSmiHandlerProfileGuid,
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NULL,
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(VOID **) &mSmiHandlerProfile
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);
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return EFI_SUCCESS;
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}
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