80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/** @file
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Header file for support functions in protected mode.
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;******************************************************************************
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;* Copyright (c) 2012 - 2019, Insyde Software Corp. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corporation.
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;*
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;******************************************************************************
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*/
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#ifndef _RUNTIME_FUNCTIONS_H_
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#define _RUNTIME_FUNCTIONS_H_
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#include "FvbServicesRuntimeDxe.h"
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/**
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This function allows the caller to determine if UEFI SetVirtualAddressMap() has been called.
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This function returns TRUE after all the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE functions have
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executed as a result of the OS calling SetVirtualAddressMap(). Prior to this time FALSE
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is returned. This function is used by runtime code to decide it is legal to access services
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that go away after SetVirtualAddressMap().
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@retval TRUE The system has finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
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@retval FALSE The system has not finished executing the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
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**/
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BOOLEAN
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GoneVirtual (
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VOID
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);
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/**
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According to input base address to get next FWH instance.
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@param[in] FwhInstance Pointer to EFI_FW_VOL_INSTANCE instance.
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@retunr EFI_FW_VOL_INSTANCE * Start address of next FWH instance.
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@retval NULL Cannot find next FWH intance.
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**/
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EFI_FW_VOL_INSTANCE *
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GetNextFwhInstance (
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IN EFI_FW_VOL_INSTANCE *FwhInstance
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);
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/**
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Routine to enable Access FVB through SMI feature.
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The mainly action of this routine is follows:
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1. Install gFvbAccessThroughSmiGuid to meet dependency to load image to SMM RAM.
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2. Create event to wait the completion of SMM image initialization.
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Note: If enabling access FVB through SMI, all of FVB access in this driver MUST
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through SMI. User should take attention to disable all of FVB access in protected
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mode.
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@retval EFI_SUCCESS Enable FVB acccess through SMI feature successful.
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@retval EFI_UNSUPPORTED System is in SMM mode or at runtime.
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**/
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EFI_STATUS
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EnableFvbAccessThroughSmi (
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VOID
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);
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/**
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Initialize all of FVB services and provide FVB services relative interfaces.
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Any error occurred in this function will be asserted.
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@retval EFI_SUCCESS Initialize FVbServices successful.
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**/
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EFI_STATUS
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InitializeFVbServices (
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VOID
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);
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#endif
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