75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/** @file
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Implement TPM2 Startup related command.
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Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.<BR>
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(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <IndustryStandard/UefiTcgPlatform.h>
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#include <Tpm2CommandLib.h>
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#include <Tpm2DeviceLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#pragma pack(1)
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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPM_SU StartupType;
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} TPM2_STARTUP_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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} TPM2_STARTUP_RESPONSE;
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#pragma pack()
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/**
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Send Startup command to TPM2.
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@param[in] StartupType TPM_SU_CLEAR or TPM_SU_STATE
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm2Startup (
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IN TPM_SU StartupType
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)
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{
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EFI_STATUS Status;
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TPM2_STARTUP_COMMAND Cmd;
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TPM2_STARTUP_RESPONSE Res;
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UINT32 ResultBufSize;
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TPM_RC ResponseCode;
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Cmd.Header.tag = SwapBytes16 (TPM_ST_NO_SESSIONS);
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Cmd.Header.paramSize = SwapBytes32 (sizeof (Cmd));
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Cmd.Header.commandCode = SwapBytes32 (TPM_CC_Startup);
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Cmd.StartupType = SwapBytes16 (StartupType);
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ResultBufSize = sizeof (Res);
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Status = Tpm2SubmitCommand (sizeof (Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ResponseCode = SwapBytes32 (Res.Header.responseCode);
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switch (ResponseCode) {
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case TPM_RC_SUCCESS:
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DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_SUCCESS\n"));
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return EFI_SUCCESS;
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case TPM_RC_INITIALIZE:
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// TPM_RC_INITIALIZE can be returned if Tpm2Startup is not required.
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DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_INITIALIZE\n"));
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return EFI_SUCCESS;
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default:
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DEBUG ((EFI_D_ERROR, "Tpm2Startup: Response Code error! 0x%08x\r\n", ResponseCode));
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return EFI_DEVICE_ERROR;
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}
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}
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