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https://bugzilla.tianocore.org/show_bug.cgi?id=1552 Add Cmos related libraries to BoardModulePkg. Totally two library have been added, one is CmosAccessLib and the other is PlatformCmosAccessLib. PlatformCmosAccessLib will be used by CmosAccessLib. These two libraries provide the generic operations for CMOS access. APIs exports by PlatformCmosAccessLib include: PlatformCmosGetEntry PlatformCmosGetNmiState APIs exports by CmosAccessLib include: CmosRead8 CmosWrite8 CmosRead16 CmosWrite16 CmosRead32 CmosWrite32 CmosInit Cc: Michael Kubacki <michael.a.kubacki@intel.com> Cc: Sai Chaganty <rangasai.v.chaganty@intel.com> Cc: Oram Isaac W <isaac.w.oram@intel.com> Sign-off-by: Eric Dong <eric.dong@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Signed-off-by: Eric Dong <eric.dong@intel.com>
107 lines
2.0 KiB
C
107 lines
2.0 KiB
C
/** @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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