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/** @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;
}
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