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/** @file
Implement TPM1.2 NV storage related command.
Copyright (c) 2015 - 2018, 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/Tpm12CommandLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/Tpm12DeviceLib.h>
//
// Max TPM NV value length
//
#define TPMNVVALUELENGTH 1024
#pragma pack(1)
typedef struct {
TPM_RQU_COMMAND_HDR Hdr;
TPM12_NV_DATA_PUBLIC PubInfo;
TPM_ENCAUTH EncAuth;
} TPM_CMD_NV_DEFINE_SPACE;
typedef struct {
TPM_RQU_COMMAND_HDR Hdr;
TPM_NV_INDEX NvIndex;
UINT32 Offset;
UINT32 DataSize;
} TPM_CMD_NV_READ_VALUE;
typedef struct {
TPM_RSP_COMMAND_HDR Hdr;
UINT32 DataSize;
UINT8 Data[TPMNVVALUELENGTH];
} TPM_RSP_NV_READ_VALUE;
typedef struct {
TPM_RQU_COMMAND_HDR Hdr;
TPM_NV_INDEX NvIndex;
UINT32 Offset;
UINT32 DataSize;
UINT8 Data[TPMNVVALUELENGTH];
} TPM_CMD_NV_WRITE_VALUE;
#pragma pack()
/**
Send NV DefineSpace command to TPM1.2.
@param PubInfo The public parameters of the NV area.
@param EncAuth The encrypted AuthData, only valid if the attributes require subsequent authorization.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm12NvDefineSpace (
IN TPM12_NV_DATA_PUBLIC *PubInfo,
IN TPM_ENCAUTH *EncAuth
)
{
EFI_STATUS Status;
TPM_CMD_NV_DEFINE_SPACE Command;
TPM_RSP_COMMAND_HDR Response;
UINT32 Length;
//
// send Tpm command TPM_ORD_NV_DefineSpace
//
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_DefineSpace);
Command.PubInfo.tag = SwapBytes16 (PubInfo->tag);
Command.PubInfo.nvIndex = SwapBytes32 (PubInfo->nvIndex);
Command.PubInfo.pcrInfoRead.pcrSelection.sizeOfSelect = SwapBytes16 (PubInfo->pcrInfoRead.pcrSelection.sizeOfSelect);
Command.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[0] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[0];
Command.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[1] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[1];
Command.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[2] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[2];
Command.PubInfo.pcrInfoRead.localityAtRelease = PubInfo->pcrInfoRead.localityAtRelease;
CopyMem (&Command.PubInfo.pcrInfoRead.digestAtRelease, &PubInfo->pcrInfoRead.digestAtRelease, sizeof (PubInfo->pcrInfoRead.digestAtRelease));
Command.PubInfo.pcrInfoWrite.pcrSelection.sizeOfSelect = SwapBytes16 (PubInfo->pcrInfoWrite.pcrSelection.sizeOfSelect);
Command.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[0] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[0];
Command.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[1] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[1];
Command.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[2] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[2];
Command.PubInfo.pcrInfoWrite.localityAtRelease = PubInfo->pcrInfoWrite.localityAtRelease;
CopyMem (&Command.PubInfo.pcrInfoWrite.digestAtRelease, &PubInfo->pcrInfoWrite.digestAtRelease, sizeof (PubInfo->pcrInfoWrite.digestAtRelease));
Command.PubInfo.permission.tag = SwapBytes16 (PubInfo->permission.tag);
Command.PubInfo.permission.attributes = SwapBytes32 (PubInfo->permission.attributes);
Command.PubInfo.bReadSTClear = PubInfo->bReadSTClear;
Command.PubInfo.bWriteSTClear = PubInfo->bWriteSTClear;
Command.PubInfo.bWriteDefine = PubInfo->bWriteDefine;
Command.PubInfo.dataSize = SwapBytes32 (PubInfo->dataSize);
CopyMem (&Command.EncAuth, EncAuth, sizeof (*EncAuth));
Length = sizeof (Response);
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
if (EFI_ERROR (Status)) {
return Status;
}
DEBUG ((DEBUG_INFO, "Tpm12NvDefineSpace - ReturnCode = %x\n", SwapBytes32 (Response.returnCode)));
switch (SwapBytes32 (Response.returnCode)) {
case TPM_SUCCESS:
return EFI_SUCCESS;
default:
return EFI_DEVICE_ERROR;
}
}
/**
Send NV ReadValue command to TPM1.2.
@param NvIndex The index of the area to set.
@param Offset The offset into the area.
@param DataSize The size of the data area.
@param Data The data to set the area to.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm12NvReadValue (
IN TPM_NV_INDEX NvIndex,
IN UINT32 Offset,
IN OUT UINT32 *DataSize,
OUT UINT8 *Data
)
{
EFI_STATUS Status;
TPM_CMD_NV_READ_VALUE Command;
TPM_RSP_NV_READ_VALUE Response;
UINT32 Length;
//
// send Tpm command TPM_ORD_NV_ReadValue
//
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_ReadValue);
Command.NvIndex = SwapBytes32 (NvIndex);
Command.Offset = SwapBytes32 (Offset);
Command.DataSize = SwapBytes32 (*DataSize);
Length = sizeof (Response);
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
if (EFI_ERROR (Status)) {
return Status;
}
DEBUG ((DEBUG_INFO, "Tpm12NvReadValue - ReturnCode = %x\n", SwapBytes32 (Response.Hdr.returnCode)));
switch (SwapBytes32 (Response.Hdr.returnCode)) {
case TPM_SUCCESS:
break;
default:
return EFI_DEVICE_ERROR;
}
//
// Return the response
//
if (SwapBytes32 (Response.DataSize) > *DataSize) {
return EFI_BUFFER_TOO_SMALL;
}
*DataSize = SwapBytes32 (Response.DataSize);
ZeroMem (Data, *DataSize);
CopyMem (Data, &Response.Data, *DataSize);
return EFI_SUCCESS;
}
/**
Send NV WriteValue command to TPM1.2.
@param NvIndex The index of the area to set.
@param Offset The offset into the NV Area.
@param DataSize The size of the data parameter.
@param Data The data to set the area to.
@retval EFI_SUCCESS Operation completed successfully.
@retval EFI_DEVICE_ERROR Unexpected device behavior.
**/
EFI_STATUS
EFIAPI
Tpm12NvWriteValue (
IN TPM_NV_INDEX NvIndex,
IN UINT32 Offset,
IN UINT32 DataSize,
IN UINT8 *Data
)
{
EFI_STATUS Status;
TPM_CMD_NV_WRITE_VALUE Command;
UINT32 CommandLength;
TPM_RSP_COMMAND_HDR Response;
UINT32 ResponseLength;
if (DataSize > sizeof (Command.Data)) {
return EFI_UNSUPPORTED;
}
//
// send Tpm command TPM_ORD_NV_WriteValue
//
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
CommandLength = sizeof (Command) - sizeof (Command.Data) + DataSize;
Command.Hdr.paramSize = SwapBytes32 (CommandLength);
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_WriteValue);
Command.NvIndex = SwapBytes32 (NvIndex);
Command.Offset = SwapBytes32 (Offset);
Command.DataSize = SwapBytes32 (DataSize);
CopyMem (Command.Data, Data, DataSize);
ResponseLength = sizeof (Response);
Status = Tpm12SubmitCommand (CommandLength, (UINT8 *)&Command, &ResponseLength, (UINT8 *)&Response);
if (EFI_ERROR (Status)) {
return Status;
}
DEBUG ((DEBUG_INFO, "Tpm12NvWriteValue - ReturnCode = %x\n", SwapBytes32 (Response.returnCode)));
switch (SwapBytes32 (Response.returnCode)) {
case TPM_SUCCESS:
return EFI_SUCCESS;
default:
return EFI_DEVICE_ERROR;
}
}
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