mirror of https://github.com/acidanthera/audk.git
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
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/** @file
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Implement TPM2 Startup related command.
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Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <IndustryStandard/UefiTcgPlatform.h>
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#include <Library/Tpm2CommandLib.h>
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#include <Library/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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typedef struct {
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TPM2_COMMAND_HEADER Header;
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TPM_SU ShutdownType;
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} TPM2_SHUTDOWN_COMMAND;
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typedef struct {
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TPM2_RESPONSE_HEADER Header;
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} TPM2_SHUTDOWN_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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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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return Status;
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}
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/**
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Send Shutdown command to TPM2.
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@param[in] ShutdownType 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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Tpm2Shutdown (
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IN TPM_SU ShutdownType
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)
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{
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EFI_STATUS Status;
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TPM2_SHUTDOWN_COMMAND Cmd;
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TPM2_SHUTDOWN_RESPONSE Res;
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UINT32 ResultBufSize;
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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_Shutdown);
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Cmd.ShutdownType = SwapBytes16(ShutdownType);
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ResultBufSize = sizeof(Res);
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Status = Tpm2SubmitCommand (sizeof(Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);
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return Status;
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}
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