mirror of https://github.com/acidanthera/audk.git
110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/** @file
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Implement TPM1.2 Startup related command.
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Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
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(C) Copyright 2016 Hewlett Packard Enterprise Development LP<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 <PiPei.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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#include <Library/Tpm12DeviceLib.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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TPM_RQU_COMMAND_HDR Hdr;
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TPM_STARTUP_TYPE TpmSt;
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} TPM_CMD_START_UP;
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#pragma pack()
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/**
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Send Startup command to TPM1.2.
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@param TpmSt Startup Type.
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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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Tpm12Startup (
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IN TPM_STARTUP_TYPE TpmSt
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)
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{
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EFI_STATUS Status;
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TPM_CMD_START_UP Command;
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TPM_RSP_COMMAND_HDR Response;
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UINT32 Length;
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//
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// send Tpm command TPM_ORD_Startup
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//
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Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
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Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
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Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup);
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Command.TpmSt = SwapBytes16 (TpmSt);
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Length = sizeof (Response);
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Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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switch (SwapBytes32(Response.returnCode)) {
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case TPM_SUCCESS:
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DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_SUCCESS\n"));
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return EFI_SUCCESS;
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case TPM_INVALID_POSTINIT:
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// In warm reset, TPM may response TPM_INVALID_POSTINIT
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DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_INVALID_POSTINIT\n"));
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return EFI_SUCCESS;
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default:
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return EFI_DEVICE_ERROR;
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}
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}
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/**
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Send SaveState command to TPM1.2.
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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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Tpm12SaveState (
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VOID
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)
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{
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EFI_STATUS Status;
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TPM_RQU_COMMAND_HDR Command;
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TPM_RSP_COMMAND_HDR Response;
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UINT32 Length;
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//
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// send Tpm command TPM_ORD_SaveState
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//
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Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
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Command.paramSize = SwapBytes32 (sizeof (Command));
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Command.ordinal = SwapBytes32 (TPM_ORD_SaveState);
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Length = sizeof (Response);
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Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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switch (SwapBytes32 (Response.returnCode)) {
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case TPM_SUCCESS:
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return EFI_SUCCESS;
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default:
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return EFI_DEVICE_ERROR;
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}
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}
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