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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 ((DEBUG_ERROR, "Tpm12PhysicalPresence: Response Code error! 0x%08x\r\n", SwapBytes32 (Response.returnCode)));
- return EFI_DEVICE_ERROR;
- }
- return EFI_SUCCESS;
- }
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