[mirror_edk2.git] / SecurityPkg / Library / Tpm12CommandLib / Tpm12NvStorage.c

/** @file\r
  Implement TPM1.2 NV storage related command.\r
\r
Copyright (c) 2015, Intel Corporation. All rights reserved. <BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <Uefi.h>\r
#include <IndustryStandard/Tpm12.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/BaseLib.h>\r
#include <Library/Tpm12DeviceLib.h>\r
#include <Library/Tpm12CommandLib.h>\r
#include <Library/DebugLib.h>\r
\r
//\r
// Max TPM command/reponse length\r
//\r
#define TPMCMDBUFLENGTH             1024\r
\r
#pragma pack(1)\r
\r
typedef struct {\r
  TPM_RQU_COMMAND_HDR   Hdr;\r
  TPM12_NV_DATA_PUBLIC  PubInfo;\r
  TPM_ENCAUTH           EncAuth;\r
} TPM_CMD_NV_DEFINE_SPACE;\r
\r
typedef struct {\r
  TPM_RSP_COMMAND_HDR   Hdr;\r
} TPM_RSP_NV_DEFINE_SPACE;\r
\r
typedef struct {\r
  TPM_RQU_COMMAND_HDR   Hdr;\r
  TPM_NV_INDEX          NvIndex;\r
  UINT32                Offset;\r
  UINT32                DataSize;\r
} TPM_CMD_NV_READ_VALUE;\r
\r
typedef struct {\r
  TPM_RSP_COMMAND_HDR   Hdr;\r
  UINT32                DataSize;\r
  UINT8                 Data[TPMCMDBUFLENGTH];\r
} TPM_RSP_NV_READ_VALUE;\r
\r
typedef struct {\r
  TPM_RQU_COMMAND_HDR   Hdr;\r
  TPM_NV_INDEX          NvIndex;\r
  UINT32                Offset;\r
  UINT32                DataSize;\r
  UINT8                 Data[TPMCMDBUFLENGTH];\r
} TPM_CMD_NV_WRITE_VALUE;\r
\r
typedef struct {\r
  TPM_RSP_COMMAND_HDR   Hdr;\r
} TPM_RSP_NV_WRITE_VALUE;\r
\r
#pragma pack()\r
\r
/**\r
  Send NV DefineSpace command to TPM1.2.\r
  \r
  @param PubInfo           The public parameters of the NV area.\r
  @param EncAuth           The encrypted AuthData, only valid if the attributes require subsequent authorization.\r
\r
  @retval EFI_SUCCESS      Operation completed successfully.\r
  @retval EFI_DEVICE_ERROR Unexpected device behavior.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm12NvDefineSpace (\r
  IN TPM12_NV_DATA_PUBLIC  *PubInfo,\r
  IN TPM_ENCAUTH           *EncAuth\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_NV_DEFINE_SPACE           SendBuffer;\r
  TPM_RSP_NV_DEFINE_SPACE           RecvBuffer;\r
  UINT32                            ReturnCode;\r
\r
  //\r
  // send Tpm command TPM_ORD_NV_DefineSpace\r
  //\r
  TpmRecvSize                = sizeof (TPM_RSP_NV_DEFINE_SPACE);\r
  TpmSendSize                = sizeof (TPM_CMD_NV_DEFINE_SPACE);\r
  SendBuffer.Hdr.tag         = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize   = SwapBytes32 (sizeof(TPM_CMD_NV_DEFINE_SPACE));\r
  SendBuffer.Hdr.ordinal     = SwapBytes32 (TPM_ORD_NV_DefineSpace);\r
  SendBuffer.PubInfo.tag     = SwapBytes16 (PubInfo->tag);\r
  SendBuffer.PubInfo.nvIndex = SwapBytes32 (PubInfo->nvIndex);\r
  SendBuffer.PubInfo.pcrInfoRead.pcrSelection.sizeOfSelect  = SwapBytes16 (PubInfo->pcrInfoRead.pcrSelection.sizeOfSelect);\r
  SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[0]  = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[0];\r
  SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[1]  = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[1];\r
  SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[2]  = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[2];\r
  SendBuffer.PubInfo.pcrInfoRead.localityAtRelease          = PubInfo->pcrInfoRead.localityAtRelease;\r
  CopyMem (&SendBuffer.PubInfo.pcrInfoRead.digestAtRelease, &PubInfo->pcrInfoRead.digestAtRelease, sizeof(PubInfo->pcrInfoRead.digestAtRelease));\r
  SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.sizeOfSelect = SwapBytes16 (PubInfo->pcrInfoWrite.pcrSelection.sizeOfSelect);\r
  SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[0] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[0];\r
  SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[1] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[1];\r
  SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[2] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[2];\r
  SendBuffer.PubInfo.pcrInfoWrite.localityAtRelease         = PubInfo->pcrInfoWrite.localityAtRelease;\r
  CopyMem (&SendBuffer.PubInfo.pcrInfoWrite.digestAtRelease, &PubInfo->pcrInfoWrite.digestAtRelease, sizeof(PubInfo->pcrInfoWrite.digestAtRelease));\r
  SendBuffer.PubInfo.permission.tag        = SwapBytes16 (PubInfo->permission.tag);\r
  SendBuffer.PubInfo.permission.attributes = SwapBytes32 (PubInfo->permission.attributes);\r
  SendBuffer.PubInfo.bReadSTClear          = PubInfo->bReadSTClear;\r
  SendBuffer.PubInfo.bWriteSTClear         = PubInfo->bWriteSTClear;\r
  SendBuffer.PubInfo.bWriteDefine          = PubInfo->bWriteDefine;\r
  SendBuffer.PubInfo.dataSize              = SwapBytes32 (PubInfo->dataSize);\r
  CopyMem (&SendBuffer.EncAuth, EncAuth, sizeof(*EncAuth));\r
\r
  Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 *)&SendBuffer, &TpmRecvSize, (UINT8 *)&RecvBuffer);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
  ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
  DEBUG ((DEBUG_INFO, "Tpm12NvDefineSpace - ReturnCode = %x\n", ReturnCode));\r
  switch (ReturnCode) {\r
  case TPM_SUCCESS:\r
    break;\r
  default:\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Send NV ReadValue command to TPM1.2.\r
\r
  @param NvIndex           The index of the area to set.\r
  @param Offset            The offset into the area.\r
  @param DataSize          The size of the data area.\r
  @param Data              The data to set the area to.\r
\r
  @retval EFI_SUCCESS      Operation completed successfully.\r
  @retval EFI_DEVICE_ERROR Unexpected device behavior.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm12NvReadValue (\r
  IN TPM_NV_INDEX   NvIndex,\r
  IN UINT32         Offset,\r
  IN OUT UINT32     *DataSize,\r
  OUT UINT8         *Data\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_NV_READ_VALUE             SendBuffer;\r
  TPM_RSP_NV_READ_VALUE             RecvBuffer;\r
  UINT32                            ReturnCode;\r
\r
  //\r
  // send Tpm command TPM_ORD_NV_ReadValue\r
  //\r
  TpmRecvSize               = sizeof (TPM_RSP_NV_READ_VALUE);\r
  TpmSendSize               = sizeof (TPM_CMD_NV_READ_VALUE);\r
  SendBuffer.Hdr.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize  = SwapBytes32 (sizeof(TPM_CMD_NV_READ_VALUE));\r
  SendBuffer.Hdr.ordinal    = SwapBytes32 (TPM_ORD_NV_ReadValue);\r
  SendBuffer.NvIndex        = SwapBytes32 (NvIndex);\r
  SendBuffer.Offset         = SwapBytes32 (Offset);\r
  SendBuffer.DataSize       = SwapBytes32 (*DataSize);\r
\r
  Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 *)&SendBuffer, &TpmRecvSize, (UINT8 *)&RecvBuffer);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
  ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
  DEBUG ((DEBUG_INFO, "Tpm12NvReadValue - ReturnCode = %x\n", ReturnCode));\r
  switch (ReturnCode) {\r
  case TPM_SUCCESS:\r
    break;\r
  default:\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  //\r
  // Return the response\r
  //\r
  *DataSize = SwapBytes32(RecvBuffer.DataSize);\r
  CopyMem (Data, &RecvBuffer.Data, *DataSize);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Send NV WriteValue command to TPM1.2.\r
  \r
  @param NvIndex           The index of the area to set.\r
  @param Offset            The offset into the NV Area.\r
  @param DataSize          The size of the data parameter.\r
  @param Data              The data to set the area to.\r
\r
  @retval EFI_SUCCESS      Operation completed successfully.\r
  @retval EFI_DEVICE_ERROR Unexpected device behavior.\r
**/\r
EFI_STATUS\r
EFIAPI\r
Tpm12NvWriteValue (\r
  IN TPM_NV_INDEX   NvIndex,\r
  IN UINT32         Offset,\r
  IN UINT32         DataSize,\r
  IN UINT8          *Data\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_NV_WRITE_VALUE            SendBuffer;\r
  TPM_RSP_NV_WRITE_VALUE            RecvBuffer;\r
  UINT32                            ReturnCode;\r
\r
  if (DataSize > sizeof(SendBuffer.Data)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // send Tpm command TPM_ORD_NV_WriteValue\r
  //\r
  TpmRecvSize               = sizeof (TPM_RSP_NV_WRITE_VALUE);\r
  TpmSendSize               = sizeof (TPM_CMD_NV_WRITE_VALUE) - sizeof(SendBuffer.Data) + DataSize;\r
  SendBuffer.Hdr.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize  = SwapBytes32 (sizeof(TPM_CMD_NV_WRITE_VALUE) - sizeof(SendBuffer.Data) + DataSize);\r
  SendBuffer.Hdr.ordinal    = SwapBytes32 (TPM_ORD_NV_WriteValue);\r
  SendBuffer.NvIndex        = SwapBytes32 (NvIndex);\r
  SendBuffer.Offset         = SwapBytes32 (Offset);\r
  SendBuffer.DataSize       = SwapBytes32 (DataSize);\r
  CopyMem (SendBuffer.Data, Data, DataSize);\r
\r
  Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 *)&SendBuffer, &TpmRecvSize, (UINT8 *)&RecvBuffer);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
  ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
  DEBUG ((DEBUG_INFO, "Tpm12NvWritedValue - ReturnCode = %x\n", ReturnCode));\r
  switch (ReturnCode) {\r
  case TPM_SUCCESS:\r
    break;\r
  default:\r
    return EFI_DEVICE_ERROR;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
92ca0c67 JY	1	/** @file\r
	2	Implement TPM1.2 NV storage related command.\r
	3	\r
	4	Copyright (c) 2015, Intel Corporation. All rights reserved. <BR>\r
	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include <Uefi.h>\r
	16	#include <IndustryStandard/Tpm12.h>\r
	17	#include <Library/BaseMemoryLib.h>\r
	18	#include <Library/BaseLib.h>\r
	19	#include <Library/Tpm12DeviceLib.h>\r
	20	#include <Library/Tpm12CommandLib.h>\r
	21	#include <Library/DebugLib.h>\r
	22	\r
	23	//\r
	24	// Max TPM command/reponse length\r
	25	//\r
	26	#define TPMCMDBUFLENGTH 1024\r
	27	\r
	28	#pragma pack(1)\r
	29	\r
	30	typedef struct {\r
	31	TPM_RQU_COMMAND_HDR Hdr;\r
	32	TPM12_NV_DATA_PUBLIC PubInfo;\r
	33	TPM_ENCAUTH EncAuth;\r
	34	} TPM_CMD_NV_DEFINE_SPACE;\r
	35	\r
	36	typedef struct {\r
	37	TPM_RSP_COMMAND_HDR Hdr;\r
	38	} TPM_RSP_NV_DEFINE_SPACE;\r
	39	\r
	40	typedef struct {\r
	41	TPM_RQU_COMMAND_HDR Hdr;\r
	42	TPM_NV_INDEX NvIndex;\r
	43	UINT32 Offset;\r
	44	UINT32 DataSize;\r
	45	} TPM_CMD_NV_READ_VALUE;\r
	46	\r
	47	typedef struct {\r
	48	TPM_RSP_COMMAND_HDR Hdr;\r
	49	UINT32 DataSize;\r
	50	UINT8 Data[TPMCMDBUFLENGTH];\r
	51	} TPM_RSP_NV_READ_VALUE;\r
	52	\r
	53	typedef struct {\r
	54	TPM_RQU_COMMAND_HDR Hdr;\r
	55	TPM_NV_INDEX NvIndex;\r
	56	UINT32 Offset;\r
	57	UINT32 DataSize;\r
	58	UINT8 Data[TPMCMDBUFLENGTH];\r
	59	} TPM_CMD_NV_WRITE_VALUE;\r
	60	\r
	61	typedef struct {\r
	62	TPM_RSP_COMMAND_HDR Hdr;\r
	63	} TPM_RSP_NV_WRITE_VALUE;\r
	64	\r
65	#pragma pack()\r
66	\r
67	/**\r
68	Send NV DefineSpace command to TPM1.2.\r
69	\r
70	@param PubInfo The public parameters of the NV area.\r
71	@param EncAuth The encrypted AuthData, only valid if the attributes require subsequent authorization.\r
72	\r
73	@retval EFI_SUCCESS Operation completed successfully.\r
74	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
75	**/\r
76	EFI_STATUS\r
77	EFIAPI\r
78	Tpm12NvDefineSpace (\r
79	IN TPM12_NV_DATA_PUBLIC *PubInfo,\r
80	IN TPM_ENCAUTH *EncAuth\r
81	)\r
82	{\r
83	EFI_STATUS Status;\r
84	UINT32 TpmRecvSize;\r
85	UINT32 TpmSendSize;\r
86	TPM_CMD_NV_DEFINE_SPACE SendBuffer;\r
87	TPM_RSP_NV_DEFINE_SPACE RecvBuffer;\r
88	UINT32 ReturnCode;\r
89	\r
90	//\r
91	// send Tpm command TPM_ORD_NV_DefineSpace\r
92	//\r
93	TpmRecvSize = sizeof (TPM_RSP_NV_DEFINE_SPACE);\r
94	TpmSendSize = sizeof (TPM_CMD_NV_DEFINE_SPACE);\r
95	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
96	SendBuffer.Hdr.paramSize = SwapBytes32 (sizeof(TPM_CMD_NV_DEFINE_SPACE));\r
97	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_DefineSpace);\r
98	SendBuffer.PubInfo.tag = SwapBytes16 (PubInfo->tag);\r
99	SendBuffer.PubInfo.nvIndex = SwapBytes32 (PubInfo->nvIndex);\r
100	SendBuffer.PubInfo.pcrInfoRead.pcrSelection.sizeOfSelect = SwapBytes16 (PubInfo->pcrInfoRead.pcrSelection.sizeOfSelect);\r
101	SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[0] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[0];\r
102	SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[1] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[1];\r
103	SendBuffer.PubInfo.pcrInfoRead.pcrSelection.pcrSelect[2] = PubInfo->pcrInfoRead.pcrSelection.pcrSelect[2];\r
104	SendBuffer.PubInfo.pcrInfoRead.localityAtRelease = PubInfo->pcrInfoRead.localityAtRelease;\r
105	CopyMem (&SendBuffer.PubInfo.pcrInfoRead.digestAtRelease, &PubInfo->pcrInfoRead.digestAtRelease, sizeof(PubInfo->pcrInfoRead.digestAtRelease));\r
106	SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.sizeOfSelect = SwapBytes16 (PubInfo->pcrInfoWrite.pcrSelection.sizeOfSelect);\r
107	SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[0] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[0];\r
108	SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[1] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[1];\r
109	SendBuffer.PubInfo.pcrInfoWrite.pcrSelection.pcrSelect[2] = PubInfo->pcrInfoWrite.pcrSelection.pcrSelect[2];\r
110	SendBuffer.PubInfo.pcrInfoWrite.localityAtRelease = PubInfo->pcrInfoWrite.localityAtRelease;\r
111	CopyMem (&SendBuffer.PubInfo.pcrInfoWrite.digestAtRelease, &PubInfo->pcrInfoWrite.digestAtRelease, sizeof(PubInfo->pcrInfoWrite.digestAtRelease));\r
112	SendBuffer.PubInfo.permission.tag = SwapBytes16 (PubInfo->permission.tag);\r
113	SendBuffer.PubInfo.permission.attributes = SwapBytes32 (PubInfo->permission.attributes);\r
114	SendBuffer.PubInfo.bReadSTClear = PubInfo->bReadSTClear;\r
115	SendBuffer.PubInfo.bWriteSTClear = PubInfo->bWriteSTClear;\r
116	SendBuffer.PubInfo.bWriteDefine = PubInfo->bWriteDefine;\r
117	SendBuffer.PubInfo.dataSize = SwapBytes32 (PubInfo->dataSize);\r
118	CopyMem (&SendBuffer.EncAuth, EncAuth, sizeof(*EncAuth));\r
119	\r
120	Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 )&SendBuffer, &TpmRecvSize, (UINT8 )&RecvBuffer);\r
121	if (EFI_ERROR (Status)) {\r
122	return Status;\r
123	}\r
124	ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
125	DEBUG ((DEBUG_INFO, "Tpm12NvDefineSpace - ReturnCode = %x\n", ReturnCode));\r
126	switch (ReturnCode) {\r
127	case TPM_SUCCESS:\r
128	break;\r
129	default:\r
130	return EFI_DEVICE_ERROR;\r
131	}\r
132	\r
133	return EFI_SUCCESS;\r
134	}\r
135	\r
136	/**\r
137	Send NV ReadValue command to TPM1.2.\r
138	\r
139	@param NvIndex The index of the area to set.\r
140	@param Offset The offset into the area.\r
141	@param DataSize The size of the data area.\r
142	@param Data The data to set the area to.\r
143	\r
144	@retval EFI_SUCCESS Operation completed successfully.\r
145	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
146	**/\r
147	EFI_STATUS\r
148	EFIAPI\r
149	Tpm12NvReadValue (\r
150	IN TPM_NV_INDEX NvIndex,\r
151	IN UINT32 Offset,\r
152	IN OUT UINT32 *DataSize,\r
153	OUT UINT8 *Data\r
154	)\r
155	{\r
156	EFI_STATUS Status;\r
157	UINT32 TpmRecvSize;\r
158	UINT32 TpmSendSize;\r
159	TPM_CMD_NV_READ_VALUE SendBuffer;\r
160	TPM_RSP_NV_READ_VALUE RecvBuffer;\r
161	UINT32 ReturnCode;\r
162	\r
163	//\r
164	// send Tpm command TPM_ORD_NV_ReadValue\r
165	//\r
166	TpmRecvSize = sizeof (TPM_RSP_NV_READ_VALUE);\r
167	TpmSendSize = sizeof (TPM_CMD_NV_READ_VALUE);\r
168	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
169	SendBuffer.Hdr.paramSize = SwapBytes32 (sizeof(TPM_CMD_NV_READ_VALUE));\r
170	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_ReadValue);\r
171	SendBuffer.NvIndex = SwapBytes32 (NvIndex);\r
172	SendBuffer.Offset = SwapBytes32 (Offset);\r
173	SendBuffer.DataSize = SwapBytes32 (*DataSize);\r
174	\r
175	Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 )&SendBuffer, &TpmRecvSize, (UINT8 )&RecvBuffer);\r
176	if (EFI_ERROR (Status)) {\r
177	return Status;\r
178	}\r
179	ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
180	DEBUG ((DEBUG_INFO, "Tpm12NvReadValue - ReturnCode = %x\n", ReturnCode));\r
181	switch (ReturnCode) {\r
182	case TPM_SUCCESS:\r
183	break;\r
184	default:\r
185	return EFI_DEVICE_ERROR;\r
186	}\r
187	\r
188	//\r
189	// Return the response\r
190	//\r
191	*DataSize = SwapBytes32(RecvBuffer.DataSize);\r
192	CopyMem (Data, &RecvBuffer.Data, *DataSize);\r
193	\r
194	return EFI_SUCCESS;\r
195	}\r
196	\r
197	/**\r
198	Send NV WriteValue command to TPM1.2.\r
199	\r
200	@param NvIndex The index of the area to set.\r
201	@param Offset The offset into the NV Area.\r
202	@param DataSize The size of the data parameter.\r
203	@param Data The data to set the area to.\r
204	\r
205	@retval EFI_SUCCESS Operation completed successfully.\r
206	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
207	**/\r
208	EFI_STATUS\r
209	EFIAPI\r
210	Tpm12NvWriteValue (\r
211	IN TPM_NV_INDEX NvIndex,\r
212	IN UINT32 Offset,\r
213	IN UINT32 DataSize,\r
214	IN UINT8 *Data\r
215	)\r
216	{\r
217	EFI_STATUS Status;\r
218	UINT32 TpmRecvSize;\r
219	UINT32 TpmSendSize;\r
220	TPM_CMD_NV_WRITE_VALUE SendBuffer;\r
221	TPM_RSP_NV_WRITE_VALUE RecvBuffer;\r
222	UINT32 ReturnCode;\r
223	\r
224	if (DataSize > sizeof(SendBuffer.Data)) {\r
225	return EFI_UNSUPPORTED;\r
226	}\r
227	\r
228	//\r
229	// send Tpm command TPM_ORD_NV_WriteValue\r
230	//\r
231	TpmRecvSize = sizeof (TPM_RSP_NV_WRITE_VALUE);\r
232	TpmSendSize = sizeof (TPM_CMD_NV_WRITE_VALUE) - sizeof(SendBuffer.Data) + DataSize;\r
233	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
234	SendBuffer.Hdr.paramSize = SwapBytes32 (sizeof(TPM_CMD_NV_WRITE_VALUE) - sizeof(SendBuffer.Data) + DataSize);\r
235	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_NV_WriteValue);\r
236	SendBuffer.NvIndex = SwapBytes32 (NvIndex);\r
237	SendBuffer.Offset = SwapBytes32 (Offset);\r
238	SendBuffer.DataSize = SwapBytes32 (DataSize);\r
239	CopyMem (SendBuffer.Data, Data, DataSize);\r
240	\r
241	Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 )&SendBuffer, &TpmRecvSize, (UINT8 )&RecvBuffer);\r
242	if (EFI_ERROR (Status)) {\r
243	return Status;\r
244	}\r
245	ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);\r
246	DEBUG ((DEBUG_INFO, "Tpm12NvWritedValue - ReturnCode = %x\n", ReturnCode));\r
247	switch (ReturnCode) {\r
248	case TPM_SUCCESS:\r
249	break;\r
250	default:\r
251	return EFI_DEVICE_ERROR;\r
252	}\r
253	\r
254	return EFI_SUCCESS;\r
255	}\r