/** @file | |
Implement TPM1.2 Physical Presence related command. | |
Copyright (c) 2016, Intel Corporation. All rights reserved. <BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <PiPei.h> | |
#include <Library/Tpm12CommandLib.h> | |
#include <Library/BaseLib.h> | |
#include <Library/DebugLib.h> | |
#include <Library/Tpm12DeviceLib.h> | |
#pragma pack(1) | |
typedef struct { | |
TPM_RQU_COMMAND_HDR Hdr; | |
TPM_PHYSICAL_PRESENCE PhysicalPresence; | |
} TPM_CMD_PHYSICAL_PRESENCE; | |
#pragma pack() | |
/** | |
Send TSC_PhysicalPresence command to TPM. | |
@param[in] PhysicalPresence The state to set the TPMs Physical Presence flags. | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_TIMEOUT The register can't run into the expected status in time. | |
@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm12PhysicalPresence ( | |
IN TPM_PHYSICAL_PRESENCE PhysicalPresence | |
) | |
{ | |
EFI_STATUS Status; | |
TPM_CMD_PHYSICAL_PRESENCE Command; | |
TPM_RSP_COMMAND_HDR Response; | |
UINT32 Length; | |
// | |
// send Tpm command TSC_ORD_PhysicalPresence | |
// | |
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); | |
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command)); | |
Command.Hdr.ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence); | |
Command.PhysicalPresence = SwapBytes16 (PhysicalPresence); | |
Length = sizeof (Response); | |
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
if (SwapBytes32(Response.returnCode) != TPM_SUCCESS) { | |
DEBUG ((EFI_D_ERROR, "Tpm12PhysicalPresence: Response Code error! 0x%08x\r\n", SwapBytes32(Response.returnCode))); | |
return EFI_DEVICE_ERROR; | |
} | |
return EFI_SUCCESS; | |
} |