/** @file
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CmosAccessLib header file.
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Copyright (c) 2019, 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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#ifndef _CMOS_ACCESS_LIB_H_
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#define _CMOS_ACCESS_LIB_H_
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/**
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Read a byte value from a CMOS address.
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@param [in] Address Location to read from CMOS
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@return The byte value read from the CMOS address.
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**/
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UINT8
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EFIAPI
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CmosRead8 (
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IN UINT8 Address
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);
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/**
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Write a byte value to a CMOS address.
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@param [in] Address Location to write to CMOS.
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@param [in] Data The byte value write to the CMOS address.
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**/
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VOID
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EFIAPI
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CmosWrite8 (
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IN UINT8 Address,
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IN UINT8 Data
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);
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/**
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Read a word value from a CMOS address.
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@param [in] Address Location to read from CMOS
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@return The word value read from the CMOS address.
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**/
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UINT16
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EFIAPI
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CmosRead16 (
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IN UINT8 Address
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);
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/**
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Write a word value to a CMOS address.
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@param [in] Address Location to write to CMOS.
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@param [in] Data The word value write to the CMOS address.
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**/
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VOID
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EFIAPI
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CmosWrite16 (
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IN UINT8 Address,
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IN UINT16 Data
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);
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/**
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Read a dword value from a CMOS address.
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@param [in] Address Location to read from CMOS
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@return The dword value read from the CMOS address.
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**/
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UINT32
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EFIAPI
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CmosRead32 (
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IN UINT8 Address
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);
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/**
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Write a dword value to a CMOS address.
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@param [in] Address Location to write to CMOS.
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@param [in] Data The dword value write to the CMOS address.
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**/
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VOID
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EFIAPI
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CmosWrite32 (
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IN UINT8 Address,
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IN UINT32 Data
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);
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/**
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Initialize the CMOS.
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It initialize the CMOS area when Force is TRUE or the checksum is incorrect.
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@param[in] Force TRUE indicating initializing the CMOS area without checking the checksum.
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@retval TRUE The CMOS is initialized to default value.
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@retval FALSE The CMOS isn't initialized to default value.
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**/
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BOOLEAN
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EFIAPI
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CmosInit (
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IN BOOLEAN Force
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);
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#endif // _CMOS_ACCESS_LIB_H_
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