/** @file
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Header file for the DxeCheckIommuSupport library.
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Copyright (c) 2020, 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 _DXE_CHECK_IOMMU_SUPPORT_LIBRARY_H_
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#define _DXE_CHECK_IOMMU_SUPPORT_LIBRARY_H_
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/**
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Detect ME FW and Board Type and return the result via IommuSkuCheck.
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IommuSkuCheck
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BIT0: Indicate system has a Corporate CSME firmware
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BIT1: Indicate BIOS is running on a CML RVP
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BIT2: Indicate BIOS is running on a CFL-H RVP
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BIT3: Indicate BIOS is running on a CFL-S 8+2 RVP
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@retval Return 0 means not support, otherwise value is defined by IommuSkuCheck
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**/
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UINT8
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DetectMeAndBoard (
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VOID
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);
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/**
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DxeCheckIommuSupport
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Only WHL/CFL-H/CFL-S 8+2 Crop SKUs support Iommu.
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This function will save sku information to PcdIommuSkuCheck.
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BIOS will use PcdIommuSkuCheck and other factors to set PcdVTdPolicyPropertyMask on the next boot in PEI phase
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This function might perform a system reset.
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**/
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EFI_STATUS
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EFIAPI
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DxeCheckIommuSupport (
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VOID
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);
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#endif // _DXE_CHECK_IOMMU_SUPPORT_LIBRARY_H_
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