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/** @file
Implement TPM1.2 Startup related command.
Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/Tpm12DeviceLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM_RQU_COMMAND_HDR Hdr;
TPM_STARTUP_TYPE TpmSt;
} TPM_CMD_START_UP;
#pragma pack()
/**
Send Startup command to TPM1.2.
@param TpmSt Startup Type.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm12Startup (
IN TPM_STARTUP_TYPE TpmSt
)
{
EFI_STATUS Status;
TPM_CMD_START_UP Command;
TPM_RSP_COMMAND_HDR Response;
UINT32 Length;
//
// send Tpm command TPM_ORD_Startup
//
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup);
Command.TpmSt = SwapBytes16 (TpmSt);
Length = sizeof (Response);
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
if (EFI_ERROR (Status)) {
return Status;
}
switch (SwapBytes32(Response.returnCode)) {
case TPM_SUCCESS:
DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_SUCCESS\n"));
return EFI_SUCCESS;
case TPM_INVALID_POSTINIT:
// In warm reset, TPM may response TPM_INVALID_POSTINIT
DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_INVALID_POSTINIT\n"));
return EFI_SUCCESS;
default:
return EFI_DEVICE_ERROR;
}
}
/**
Send SaveState command to TPM1.2.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm12SaveState (
VOID
)
{
EFI_STATUS Status;
TPM_RQU_COMMAND_HDR Command;
TPM_RSP_COMMAND_HDR Response;
UINT32 Length;
//
// send Tpm command TPM_ORD_SaveState
//
Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
Command.paramSize = SwapBytes32 (sizeof (Command));
Command.ordinal = SwapBytes32 (TPM_ORD_SaveState);
Length = sizeof (Response);
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
if (EFI_ERROR (Status)) {
return Status;
}
switch (SwapBytes32 (Response.returnCode)) {
case TPM_SUCCESS:
return EFI_SUCCESS;
default:
return EFI_DEVICE_ERROR;
}
}
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