/** @file
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This file contains functions for PCH DMI SIP14
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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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#include <Base.h>
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#include <Uefi/UefiBaseType.h>
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#include <Library/IoLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseLib.h>
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#include <Library/PchInfoLib.h>
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#include <Library/PchPcrLib.h>
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#include <Private/Library/PchDmiLib.h>
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#include <Library/PchCycleDecodingLib.h>
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#include <Library/PchPcrLib.h>
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#include <Library/PchInfoLib.h>
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#include <Register/PchRegsDmi.h>
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#include <Register/PchRegsDmi14.h>
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#include <Register/PchRegsPcr.h>
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/**
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This function checks if DMI SIP14 Secured Register Lock (SRL) is set
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@retval SRL state
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**/
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BOOLEAN
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IsPchDmi14Locked (
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VOID
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)
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{
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return ((PchPcrRead32 (PID_DMI, R_PCH_DMI14_PCR_DMIC) & B_PCH_DMI14_PCR_DMIC_SRL) != 0);
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}
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/**
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Enable PCIe Relaxed Order for DMI SIP14
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**/
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VOID
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PchDmi14EnablePcieRelaxedOrder (
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VOID
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)
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{
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//
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// Enable Forced Relaxed Ordering to always allow downstream completions to pass posted writes.
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// Set Completion Relaxed Ordering Attribute Override Value
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// and Completion Relaxed Ordering Attribute Override Enable
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//
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PchPcrAndThenOr32 (PID_DMI, R_PCH_DMI14_PCR_2314, ~0u, (BIT31 | BIT7));
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}
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/**
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Secure Register Lock data
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@param[out] SrlRegOffset Register offset holding Secure Register Lock setting
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@param[out] SrlRegMask Mask for Secure Register Lock setting
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**/
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VOID
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PchDmi14SrlRegData (
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OUT UINT16 *SrlRegOffset,
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OUT UINT32 *SrlRegMask
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)
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{
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*SrlRegMask = B_PCH_DMI14_PCR_DMIC_SRL;
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*SrlRegOffset = R_PCH_DMI14_PCR_DMIC;
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}
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