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/** @file
Implement TPM2 Miscellanenous related command.
Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <IndustryStandard/UefiTcgPlatform.h>
#include <Library/Tpm2CommandLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#pragma pack(1)
typedef struct {
TPM2_COMMAND_HEADER Header;
TPMI_RH_HIERARCHY_AUTH AuthHandle;
UINT32 AuthSessionSize;
TPMS_AUTH_COMMAND AuthSession;
UINT32 AlgorithmSet;
} TPM2_SET_ALGORITHM_SET_COMMAND;
typedef struct {
TPM2_RESPONSE_HEADER Header;
UINT32 AuthSessionSize;
TPMS_AUTH_RESPONSE AuthSession;
} TPM2_SET_ALGORITHM_SET_RESPONSE;
#pragma pack()
/**
This command allows the platform to change the set of algorithms that are used by the TPM.
The algorithmSet setting is a vendor-dependent value.
@param[in] AuthHandle TPM_RH_PLATFORM
@param[in] AuthSession Auth Session context
@param[in] AlgorithmSet A TPM vendor-dependent value indicating the
algorithm set selection
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm2SetAlgorithmSet (
IN TPMI_RH_PLATFORM AuthHandle,
IN TPMS_AUTH_COMMAND *AuthSession,
IN UINT32 AlgorithmSet
)
{
EFI_STATUS Status;
TPM2_SET_ALGORITHM_SET_COMMAND SendBuffer;
TPM2_SET_ALGORITHM_SET_RESPONSE RecvBuffer;
UINT32 SendBufferSize;
UINT32 RecvBufferSize;
UINT8 *Buffer;
UINT32 SessionInfoSize;
//
// Construct command
//
SendBuffer.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_SetAlgorithmSet);
SendBuffer.AuthHandle = SwapBytes32 (AuthHandle);
//
// Add in Auth session
//
Buffer = (UINT8 *)&SendBuffer.AuthSession;
// sessionInfoSize
SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
Buffer += SessionInfoSize;
SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
//
// Real data
//
WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(AlgorithmSet));
Buffer += sizeof(UINT32);
SendBufferSize = (UINT32)((UINTN)Buffer - (UINTN)&SendBuffer);
SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
//
// send Tpm command
//
RecvBufferSize = sizeof (RecvBuffer);
Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
if (EFI_ERROR (Status)) {
return Status;
}
if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
DEBUG ((EFI_D_ERROR, "Tpm2SetAlgorithmSet - RecvBufferSize Error - %x\n", RecvBufferSize));
return EFI_DEVICE_ERROR;
}
if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
DEBUG ((EFI_D_ERROR, "Tpm2SetAlgorithmSet - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
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