TpmMmioSevDecryptPeim.c File Reference

#include <PiPei.h>
#include <Library/DebugLib.h>
#include <Library/MemEncryptSevLib.h>
#include <Library/PcdLib.h>
#include <Library/PeiServicesLib.h>

Go to the source code of this file.

Functions
EFI_STATUS EFIAPI	TpmMmioSevDecryptPeimEntryPoint (IN EFI_PEI_FILE_HANDLE FileHandle, IN CONST EFI_PEI_SERVICES **PeiServices)

Variables
STATIC CONST EFI_PEI_PPI_DESCRIPTOR	mTpmMmioRangeAccessible

Detailed Description

Map TPM MMIO range unencrypted when SEV-ES is active. Install gOvmfTpmMmioAccessiblePpiGuid unconditionally.

Copyright (C) 2021, Advanced Micro Devices, Inc.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file TpmMmioSevDecryptPeim.c.

Function Documentation

TpmMmioSevDecryptPeimEntryPoint()

EFI_STATUS EFIAPI TpmMmioSevDecryptPeimEntryPoint	(	IN EFI_PEI_FILE_HANDLE	FileHandle,
		IN CONST EFI_PEI_SERVICES **	PeiServices
	)

The entry point for TPM MMIO range mapping driver.

Parameters

[in]	FileHandle	Handle of the file being invoked.
[in]	PeiServices	Describes the list of possible PEI Services.

Return values

EFI_ABORTED

No need to keep this PEIM resident

Definition at line 33 of file TpmMmioSevDecryptPeim.c.

Variable Documentation

mTpmMmioRangeAccessible

STATIC CONST EFI_PEI_PPI_DESCRIPTOR mTpmMmioRangeAccessible

Initial value:

= {
  EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
  &gOvmfTpmMmioAccessiblePpiGuid,
  NULL
}

Definition at line 17 of file TpmMmioSevDecryptPeim.c.