mirror of https://github.com/acidanthera/audk.git
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
/** @file
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Configure TPM 2 platform hierarchy on TPM state resume failure on S3 resume
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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Copyright (c) Microsoft Corporation.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/HobLib.h>
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#include <Library/Tpm2CommandLib.h>
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#include <Library/Tpm2DeviceLib.h>
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#include <Library/TpmPlatformHierarchyLib.h>
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#include <Library/RngLib.h>
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#include <Ppi/EndOfPeiPhase.h>
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#define MAX_NEW_AUTHORIZATION_SIZE SHA512_DIGEST_SIZE
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/**
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This function handles PlatformInit task at the end of PEI
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@param[in] PeiServices Pointer to PEI Services Table.
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@param[in] NotifyDescriptor Pointer to the descriptor for the Notification event that
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caused this function to execute.
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@param[in] Ppi Pointer to the PPI data associated with this function.
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@retval EFI_SUCCESS The function completes successfully
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@retval others
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**/
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EFI_STATUS
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EFIAPI
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PlatformInitEndOfPei (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
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IN VOID *Ppi
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)
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{
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VOID *TcgEventLog;
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//
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// Try to get TcgEventLog in S3 to see if S3 error is reported.
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//
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TcgEventLog = GetFirstGuidHob (&gTcgEventEntryHobGuid);
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if (TcgEventLog == NULL) {
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TcgEventLog = GetFirstGuidHob (&gTcgEvent2EntryHobGuid);
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}
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if (TcgEventLog == NULL) {
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//
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// no S3 error reported
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//
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return EFI_SUCCESS;
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}
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//
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// If there is S3 error on TPM_SU_STATE and success on TPM_SU_CLEAR,
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// configure the TPM Platform Hierarchy.
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//
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ConfigureTpmPlatformHierarchy ();
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return EFI_SUCCESS;
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}
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static EFI_PEI_NOTIFY_DESCRIPTOR mEndOfPeiNotifyList = {
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(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiEndOfPeiSignalPpiGuid,
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(EFI_PEIM_NOTIFY_ENTRY_POINT)PlatformInitEndOfPei
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};
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/**
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Main entry
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@param[in] FileHandle Handle of the file being invoked.
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@param[in] PeiServices Pointer to PEI Services table.
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@retval EFI_SUCCESS Install function successfully.
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**/
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EFI_STATUS
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EFIAPI
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Tcg2PlatformPeiEntryPoint (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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EFI_BOOT_MODE BootMode;
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Status = PeiServicesGetBootMode (&BootMode);
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ASSERT_EFI_ERROR (Status);
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if (BootMode != BOOT_ON_S3_RESUME) {
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return EFI_SUCCESS;
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}
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//
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// Performing PlatformInitEndOfPei after EndOfPei PPI produced
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//
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Status = PeiServicesNotifyPpi (&mEndOfPeiNotifyList);
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return Status;
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}
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