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alder_lake_bios/Intel/AlderLake/AlderLakePlatSamplePkg/Library/PeiPolicyUpdateLib/PeiAmtPolicyUpdate.c

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/** @file
This file is SampleCode of the library for Intel AMT PEI Platform Policy Update.
@copyright
INTEL CONFIDENTIAL
Copyright 1999 - 2021 Intel Corporation.
The source code contained or described herein and all documents related to the
source code ("Material") are owned by Intel Corporation or its suppliers or
licensors. Title to the Material remains with Intel Corporation or its suppliers
and licensors. The Material may contain trade secrets and proprietary and
confidential information of Intel Corporation and its suppliers and licensors,
and is protected by worldwide copyright and trade secret laws and treaty
provisions. No part of the Material may be used, copied, reproduced, modified,
published, uploaded, posted, transmitted, distributed, or disclosed in any way
without Intel's prior express written permission.
No license under any patent, copyright, trade secret or other intellectual
property right is granted to or conferred upon you by disclosure or delivery
of the Materials, either expressly, by implication, inducement, estoppel or
otherwise. Any license under such intellectual property rights must be
express and approved by Intel in writing.
Unless otherwise agreed by Intel in writing, you may not remove or alter
this notice or any other notice embedded in Materials by Intel or
Intel's suppliers or licensors in any way.
This file contains a 'Sample Driver' and is licensed as such under the terms
of your license agreement with Intel or your vendor. This file may be modified
by the user, subject to the additional terms of the license agreement.
@par Specification Reference:
**/
#include <Library/BaseMemoryLib.h>
#include <Library/ConfigBlockLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/PeiSiPolicyUpdateLib.h>
#include <Library/SiPolicyLib.h>
#include <Ppi/ReadOnlyVariable2.h>
#include <Ppi/SiPolicy.h>
#include <IndustryStandardAsf.h>
#include <IntelAsfExtensions.h>
#include <MebxData.h>
#include <PolicyUpdateMacro.h>
#include <SetupVariable.h>
#include <Library/PeiMeLib.h>
#include <MeBiosPayloadHob.h>
#if FixedPcdGet8(PcdFspModeSelection) == 1
#include <FspsUpd.h>
#endif
#define MEBX_DATA_VARIABLE_NAME L"MebxData"
//
// The ASF message types which will be push to PET Hob.
//
GLOBAL_REMOVE_IF_UNREFERENCED ASF_FRAMEWORK_MESSAGE_TYPE mAmtForcePushPetPolicy[] = {
AsfMessageChassisIntrusion,
AsfMessageUserAuthenticationInvalid,
AsfMessageHddAuthenticationInvalid,
AsfMessageTermination
};
/**
Install the Active Management push PET policy
**/
VOID
InstallAmtForcePushPetPolicy (
VOID
)
{
VOID *Hob;
//
// Build HOB for information needed to push to PET
//
Hob = BuildGuidDataHob (
&gAmtForcePushPetPolicyGuid,
&mAmtForcePushPetPolicy,
sizeof (mAmtForcePushPetPolicy)
);
//
// Cannot Build HOB
//
ASSERT (Hob != NULL);
return;
}
/**
Check if the AMT feature is enabled in CSME.
@retval TRUE AMT is enabled
@retval FALSE AMT is disabled
**/
BOOLEAN
IsAmtEnabled (
VOID
)
{
ME_BIOS_PAYLOAD_HOB *MbpHob;
EFI_STATUS Status;
MEFWCAPS_SKU FwCapsSku;
//
// Get Mbp Data HOB
//
MbpHob = GetFirstGuidHob (&gMeBiosPayloadHobGuid);
if (MbpHob != NULL) {
if ((MbpHob->MeBiosPayload.FwCapsSku.FwCapabilities.Fields.Amt == 1) &&
(MbpHob->MeBiosPayload.FwFeaturesState.FwFeatures.Fields.Amt == 1))
return TRUE;
} else {
//
// When MBP is not available (e.g S3 resume), we need
// to retrieve Feature Capabilities and State from CSME
//
Status = PeiHeciGetFwCapsSkuMsg (&FwCapsSku);
if (!EFI_ERROR (Status) && FwCapsSku.Fields.Amt == 1) {
Status = PeiHeciGetFwFeatureStateMsg (&FwCapsSku);
if (!EFI_ERROR (Status) && FwCapsSku.Fields.Amt == 1) {
return TRUE;
}
}
}
return FALSE;
}
/**
Install the Active Management Policy Ppi Library
@retval EFI_SUCCESS Initialization complete.
@retval EFI_UNSUPPORTED The chipset is unsupported by this driver.
@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
@retval EFI_DEVICE_ERROR Device error, driver exits abnormally.
**/
EFI_STATUS
EFIAPI
UpdatePeiAmtPolicy (
VOID
)
{
EFI_STATUS Status;
EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariableServices;
UINTN VariableSize;
ME_SETUP MeSetup;
#if FixedPcdGet8(PcdFspModeSelection) == 1
VOID *FspsUpd;
#else
SI_POLICY_PPI *SiPolicyPpi;
AMT_PEI_CONFIG *AmtPeiConfig;
#endif
MEBX_DATA MebxData;
DEBUG ((DEBUG_INFO, "Update PeiAmtPolicyUpdate Pos-Mem Start\n"));
#if FixedPcdGet8(PcdFspModeSelection) == 1
FspsUpd = NULL;
FspsUpd = (FSPS_UPD *) PcdGet32 (PcdFspsUpdDataAddress);
ASSERT (FspsUpd != NULL);
#else
SiPolicyPpi = NULL;
AmtPeiConfig = NULL;
Status = PeiServicesLocatePpi (&gSiPolicyPpiGuid, 0, NULL, (VOID **) &SiPolicyPpi);
ASSERT_EFI_ERROR (Status);
Status = GetConfigBlock ((VOID *) SiPolicyPpi, &gAmtPeiConfigGuid, (VOID *) &AmtPeiConfig);
ASSERT_EFI_ERROR (Status);
#endif
//
// Locate Variable Ppi
//
Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariableServices);
//
// Make sure we have a PPI, if not, just return.
//
if (EFI_ERROR (Status)) {
return EFI_SUCCESS;
}
//
// Get Setup Variable
//
VariableSize = sizeof (ME_SETUP);
Status = VariableServices->GetVariable (
VariableServices,
L"MeSetup",
&gMeSetupVariableGuid,
NULL,
&VariableSize,
&MeSetup
);
if (!EFI_ERROR (Status)) {
COMPARE_AND_UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.AmtEnabled, AmtPeiConfig->AmtEnabled, MeSetup.Amt, NullIndex);
COMPARE_AND_UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogEnabled, AmtPeiConfig->WatchDogEnabled, MeSetup.WatchDogEnabled, NullIndex);
COMPARE_AND_UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogTimerBios, AmtPeiConfig->WatchDogTimerBios, MeSetup.WatchDogTimerBios, NullIndex);
COMPARE_AND_UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogTimerOs, AmtPeiConfig->WatchDogTimerOs, MeSetup.WatchDogTimerOs, NullIndex);
COMPARE_AND_UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.FwProgress, AmtPeiConfig->FwProgress, MeSetup.FwProgress, NullIndex);
}
VariableSize = sizeof (MebxData);
Status = VariableServices->GetVariable (
VariableServices,
MEBX_DATA_VARIABLE_NAME,
&gMebxDataGuid,
NULL,
&VariableSize,
&MebxData
);
if (!EFI_ERROR (Status)) {
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.AmtSolEnabled, AmtPeiConfig->AmtSolEnabled, MebxData.AmtSol);
} else {
DEBUG ((DEBUG_WARN, "Failed to retrieve Variable:\"MebxData\", Status = %r\n", Status));
}
if (!IsAmtEnabled () ||
#if FixedPcdGet8(PcdFspModeSelection) == 1
(((FSPS_UPD *) FspsUpd)->FspsConfig.AmtEnabled == 0)) {
#else
(AmtPeiConfig->AmtEnabled == 0)) {
#endif
//
// Disable below settings since they have dependency on AMT.
//
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.FwProgress, AmtPeiConfig->FwProgress, 0);
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogEnabled, AmtPeiConfig->WatchDogEnabled, 0);
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogTimerBios, AmtPeiConfig->WatchDogTimerBios, 0);
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.WatchDogTimerOs, AmtPeiConfig->WatchDogTimerOs, 0);
UPDATE_POLICY (((FSPS_UPD *) FspsUpd)->FspsConfig.AmtSolEnabled, AmtPeiConfig->AmtSolEnabled, 0);
}
InstallAmtForcePushPetPolicy ();
return Status;
}
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