[mirror_edk2.git] / SecurityPkg / Tcg / TcgPei / TpmComm.c

/** @file\r
  Utility functions used by TPM PEI driver.\r
  \r
Copyright (c) 2005 - 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 "TpmComm.h"\r
\r
/**\r
  Send a command to TPM for execution and return response data.\r
\r
  @param[in]      PeiServices   Describes the list of possible PEI Services.\r
  @param[in]      TisReg        TPM register space base address.  \r
  @param[in]      BufferIn      Buffer for command data.  \r
  @param[in]      SizeIn        Size of command data.  \r
  @param[in, out] BufferOut     Buffer for response data.  \r
  @param[in, out] SizeOut       size of response data.  \r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TisTpmCommand (\r
  IN     EFI_PEI_SERVICES           **PeiServices,\r
  IN     TIS_PC_REGISTERS_PTR       TisReg,\r
  IN     UINT8                      *BufferIn,\r
  IN     UINT32                     SizeIn,\r
  IN OUT UINT8                      *BufferOut,\r
  IN OUT UINT32                     *SizeOut\r
  );\r
\r
/**\r
  Send TPM_Startup command to TPM.\r
\r
  @param[in] PeiServices        Describes the list of possible PEI Services.\r
  @param[in] TpmHandle          TPM handle.  \r
  @param[in] BootMode           Boot mode.  \r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TpmCommStartup (\r
  IN      EFI_PEI_SERVICES          **PeiServices,\r
  IN      TIS_TPM_HANDLE            TpmHandle,\r
  IN      EFI_BOOT_MODE             BootMode\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  TPM_STARTUP_TYPE                  TpmSt;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_START_UP                  SendBuffer;\r
  UINT8                             RecvBuffer[20];\r
\r
  TpmSt = TPM_ST_CLEAR;\r
  if (BootMode == BOOT_ON_S3_RESUME) {\r
    TpmSt = TPM_ST_STATE;\r
  }\r
  //\r
  // send Tpm command TPM_ORD_Startup\r
  //\r
  TpmRecvSize               = 20;\r
  TpmSendSize               = sizeof (TPM_CMD_START_UP);\r
  SendBuffer.Hdr.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize  = SwapBytes32 (TpmSendSize);\r
  SendBuffer.Hdr.ordinal    = SwapBytes32 (TPM_ORD_Startup);\r
  SendBuffer.TpmSt          = SwapBytes16 (TpmSt);\r
  Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
  return Status;\r
}\r
\r
/**\r
  Send TPM_ContinueSelfTest command to TPM.\r
\r
  @param[in] PeiServices        Describes the list of possible PEI Services.\r
  @param[in] TpmHandle          TPM handle.  \r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TpmCommContinueSelfTest (\r
  IN      EFI_PEI_SERVICES          **PeiServices,\r
  IN      TIS_TPM_HANDLE            TpmHandle\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_SELF_TEST                 SendBuffer;\r
  UINT8                             RecvBuffer[20];\r
\r
  //\r
  // send Tpm command TPM_ORD_ContinueSelfTest\r
  //\r
  TpmRecvSize               = 20;\r
  TpmSendSize               = sizeof (TPM_CMD_SELF_TEST);\r
  SendBuffer.Hdr.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize  = SwapBytes32 (TpmSendSize);  \r
  SendBuffer.Hdr.ordinal    = SwapBytes32 (TPM_ORD_ContinueSelfTest);\r
  Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
  return Status;\r
}\r
\r
/**\r
  Get TPM capability flags.\r
\r
  @param[in]  PeiServices       Describes the list of possible PEI Services.\r
  @param[in]  TpmHandle         TPM handle.  \r
  @param[out] Deactivated       Returns deactivated flag.\r
  @param[out] LifetimeLock      Returns physicalPresenceLifetimeLock permanent flag.  \r
  @param[out] CmdEnable         Returns physicalPresenceCMDEnable permanent flag.\r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TpmCommGetCapability (\r
  IN      EFI_PEI_SERVICES          **PeiServices,\r
  IN      TIS_TPM_HANDLE            TpmHandle,\r
     OUT  BOOLEAN                   *Deactivated, OPTIONAL\r
     OUT  BOOLEAN                   *LifetimeLock, OPTIONAL\r
     OUT  BOOLEAN                   *CmdEnable OPTIONAL\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmRecvSize;\r
  UINT32                            TpmSendSize;\r
  TPM_CMD_GET_CAPABILITY            SendBuffer;\r
  UINT8                             RecvBuffer[40];\r
  TPM_PERMANENT_FLAGS               *TpmPermanentFlags;\r
\r
  //\r
  // send Tpm command TPM_ORD_GetCapability\r
  //\r
  TpmRecvSize                   = 40;\r
  TpmSendSize                   = sizeof (TPM_CMD_GET_CAPABILITY);\r
  SendBuffer.Hdr.tag            = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize      = SwapBytes32 (TpmSendSize);  \r
  SendBuffer.Hdr.ordinal        = SwapBytes32 (TPM_ORD_GetCapability);\r
  SendBuffer.Capability         = SwapBytes32 (TPM_CAP_FLAG);\r
  SendBuffer.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT));\r
  SendBuffer.CapabilityFlag     = SwapBytes32 (TPM_CAP_FLAG_PERMANENT);\r
  Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
  TpmPermanentFlags = (TPM_PERMANENT_FLAGS *)&RecvBuffer[sizeof (TPM_RSP_COMMAND_HDR) + sizeof (UINT32)];\r
  if (Deactivated != NULL) {\r
    *Deactivated      = TpmPermanentFlags->deactivated;\r
  }\r
\r
  if (LifetimeLock != NULL) {\r
    *LifetimeLock = TpmPermanentFlags->physicalPresenceLifetimeLock;\r
  }\r
\r
  if (CmdEnable != NULL) {\r
    *CmdEnable = TpmPermanentFlags->physicalPresenceCMDEnable;\r
  }\r
  return Status;\r
}\r
\r
/**\r
  Extend a TPM PCR.\r
\r
  @param[in]  PeiServices       Describes the list of possible PEI Services.\r
  @param[in]  TpmHandle         TPM handle.  \r
  @param[in]  DigestToExtend    The 160 bit value representing the event to be recorded.  \r
  @param[in]  PcrIndex          The PCR to be updated.\r
  @param[out] NewPcrValue       New PCR value after extend.  \r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TpmCommExtend (\r
  IN      EFI_PEI_SERVICES          **PeiServices,\r
  IN      TIS_TPM_HANDLE            TpmHandle,\r
  IN      TPM_DIGEST                *DigestToExtend,\r
  IN      TPM_PCRINDEX              PcrIndex,\r
     OUT  TPM_DIGEST                *NewPcrValue\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmSendSize;\r
  UINT32                            TpmRecvSize;\r
  TPM_CMD_EXTEND                    SendBuffer;\r
  UINT8                             RecvBuffer[10 + sizeof(TPM_DIGEST)];\r
\r
  //\r
  // send Tpm command TPM_ORD_Extend\r
  //\r
  TpmRecvSize               = sizeof (TPM_RSP_COMMAND_HDR) + sizeof (TPM_DIGEST);\r
  TpmSendSize               = sizeof (TPM_CMD_EXTEND);\r
  SendBuffer.Hdr.tag        = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize  = SwapBytes32 (TpmSendSize);\r
  SendBuffer.Hdr.ordinal    = SwapBytes32 (TPM_ORD_Extend);\r
  SendBuffer.PcrIndex       = SwapBytes32 (PcrIndex);\r
  CopyMem (&SendBuffer.TpmDigest, (UINT8 *)DigestToExtend, sizeof (TPM_DIGEST));\r
  Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  if(NewPcrValue != NULL) {\r
    CopyMem ((UINT8*)NewPcrValue, &RecvBuffer[10], sizeof (TPM_DIGEST));\r
  }\r
\r
  return Status;\r
}\r
\r
\r
/**\r
  Send TSC_PhysicalPresence command to TPM.\r
\r
  @param[in] PeiServices        Describes the list of possible PEI Services.\r
  @param[in] TpmHandle          TPM handle.  \r
  @param[in] PhysicalPresence   The state to set the TPMs Physical Presence flags.  \r
 \r
  @retval EFI_SUCCESS           Operation completed successfully.\r
  @retval EFI_TIMEOUT           The register can't run into the expected status in time.\r
  @retval EFI_BUFFER_TOO_SMALL  Response data buffer is too small.\r
  @retval EFI_DEVICE_ERROR      Unexpected device behavior.\r
\r
**/\r
EFI_STATUS\r
TpmCommPhysicalPresence (\r
  IN      EFI_PEI_SERVICES          **PeiServices,\r
  IN      TIS_TPM_HANDLE            TpmHandle,\r
  IN      TPM_PHYSICAL_PRESENCE     PhysicalPresence\r
  )\r
{\r
  EFI_STATUS                        Status;\r
  UINT32                            TpmSendSize;\r
  UINT32                            TpmRecvSize;\r
  TPM_CMD_PHYSICAL_PRESENCE         SendBuffer;\r
  UINT8                             RecvBuffer[10];\r
\r
  //\r
  // send Tpm command TSC_ORD_PhysicalPresence\r
  //\r
  TpmRecvSize                 = 10;\r
  TpmSendSize                 = sizeof (TPM_CMD_PHYSICAL_PRESENCE);\r
  SendBuffer.Hdr.tag          = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
  SendBuffer.Hdr.paramSize    = SwapBytes32 (TpmSendSize);\r
  SendBuffer.Hdr.ordinal      = SwapBytes32 (TSC_ORD_PhysicalPresence);\r
  SendBuffer.PhysicalPresence = SwapBytes16 (PhysicalPresence);\r
  Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
  return Status;\r
}\r
Commit	Line	Data
0c18794e	1	/** @file\r
	2	Utility functions used by TPM PEI driver.\r
	3	\r
6f785cfc	4	Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>\r
0c18794e	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 "TpmComm.h"\r
	16	\r
	17	/**\r
	18	Send a command to TPM for execution and return response data.\r
	19	\r
	20	@param[in] PeiServices Describes the list of possible PEI Services.\r
	21	@param[in] TisReg TPM register space base address. \r
	22	@param[in] BufferIn Buffer for command data. \r
	23	@param[in] SizeIn Size of command data. \r
	24	@param[in, out] BufferOut Buffer for response data. \r
	25	@param[in, out] SizeOut size of response data. \r
	26	\r
	27	@retval EFI_SUCCESS Operation completed successfully.\r
	28	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
	29	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
	30	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
	31	\r
	32	**/\r
	33	EFI_STATUS\r
	34	TisTpmCommand (\r
	35	IN EFI_PEI_SERVICES **PeiServices,\r
	36	IN TIS_PC_REGISTERS_PTR TisReg,\r
	37	IN UINT8 *BufferIn,\r
	38	IN UINT32 SizeIn,\r
	39	IN OUT UINT8 *BufferOut,\r
	40	IN OUT UINT32 *SizeOut\r
	41	);\r
	42	\r
	43	/**\r
	44	Send TPM_Startup command to TPM.\r
	45	\r
	46	@param[in] PeiServices Describes the list of possible PEI Services.\r
	47	@param[in] TpmHandle TPM handle. \r
	48	@param[in] BootMode Boot mode. \r
	49	\r
	50	@retval EFI_SUCCESS Operation completed successfully.\r
	51	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
	52	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
	53	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
	54	\r
	55	**/\r
	56	EFI_STATUS\r
	57	TpmCommStartup (\r
	58	IN EFI_PEI_SERVICES **PeiServices,\r
	59	IN TIS_TPM_HANDLE TpmHandle,\r
	60	IN EFI_BOOT_MODE BootMode\r
	61	)\r
	62	{\r
	63	EFI_STATUS Status;\r
	64	TPM_STARTUP_TYPE TpmSt;\r
	65	UINT32 TpmRecvSize;\r
	66	UINT32 TpmSendSize;\r
	67	TPM_CMD_START_UP SendBuffer;\r
	68	UINT8 RecvBuffer[20];\r
69	\r
70	TpmSt = TPM_ST_CLEAR;\r
71	if (BootMode == BOOT_ON_S3_RESUME) {\r
72	TpmSt = TPM_ST_STATE;\r
73	}\r
74	//\r
75	// send Tpm command TPM_ORD_Startup\r
76	//\r
77	TpmRecvSize = 20;\r
78	TpmSendSize = sizeof (TPM_CMD_START_UP);\r
79	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
80	SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize);\r
81	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup);\r
82	SendBuffer.TpmSt = SwapBytes16 (TpmSt);\r
83	Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
84	return Status;\r
85	}\r
86	\r
87	/**\r
88	Send TPM_ContinueSelfTest command to TPM.\r
89	\r
90	@param[in] PeiServices Describes the list of possible PEI Services.\r
91	@param[in] TpmHandle TPM handle. \r
92	\r
93	@retval EFI_SUCCESS Operation completed successfully.\r
94	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
95	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
96	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
97	\r
98	**/\r
99	EFI_STATUS\r
100	TpmCommContinueSelfTest (\r
101	IN EFI_PEI_SERVICES **PeiServices,\r
102	IN TIS_TPM_HANDLE TpmHandle\r
103	)\r
104	{\r
105	EFI_STATUS Status;\r
106	UINT32 TpmRecvSize;\r
107	UINT32 TpmSendSize;\r
108	TPM_CMD_SELF_TEST SendBuffer;\r
109	UINT8 RecvBuffer[20];\r
110	\r
111	//\r
112	// send Tpm command TPM_ORD_ContinueSelfTest\r
113	//\r
114	TpmRecvSize = 20;\r
115	TpmSendSize = sizeof (TPM_CMD_SELF_TEST);\r
116	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
117	SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize); \r
118	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_ContinueSelfTest);\r
119	Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
120	return Status;\r
121	}\r
122	\r
123	/**\r
124	Get TPM capability flags.\r
125	\r
126	@param[in] PeiServices Describes the list of possible PEI Services.\r
127	@param[in] TpmHandle TPM handle. \r
128	@param[out] Deactivated Returns deactivated flag.\r
129	@param[out] LifetimeLock Returns physicalPresenceLifetimeLock permanent flag. \r
130	@param[out] CmdEnable Returns physicalPresenceCMDEnable permanent flag.\r
131	\r
132	@retval EFI_SUCCESS Operation completed successfully.\r
133	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
134	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
135	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
136	\r
137	**/\r
138	EFI_STATUS\r
139	TpmCommGetCapability (\r
140	IN EFI_PEI_SERVICES **PeiServices,\r
141	IN TIS_TPM_HANDLE TpmHandle,\r
142	OUT BOOLEAN *Deactivated, OPTIONAL\r
143	OUT BOOLEAN *LifetimeLock, OPTIONAL\r
144	OUT BOOLEAN *CmdEnable OPTIONAL\r
145	)\r
146	{\r
147	EFI_STATUS Status;\r
148	UINT32 TpmRecvSize;\r
149	UINT32 TpmSendSize;\r
150	TPM_CMD_GET_CAPABILITY SendBuffer;\r
151	UINT8 RecvBuffer[40];\r
152	TPM_PERMANENT_FLAGS *TpmPermanentFlags;\r
153	\r
154	//\r
155	// send Tpm command TPM_ORD_GetCapability\r
156	//\r
157	TpmRecvSize = 40;\r
158	TpmSendSize = sizeof (TPM_CMD_GET_CAPABILITY);\r
159	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
160	SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize); \r
161	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_GetCapability);\r
162	SendBuffer.Capability = SwapBytes32 (TPM_CAP_FLAG);\r
163	SendBuffer.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT));\r
164	SendBuffer.CapabilityFlag = SwapBytes32 (TPM_CAP_FLAG_PERMANENT);\r
165	Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
166	if (EFI_ERROR (Status)) {\r
167	return Status;\r
168	}\r
169	TpmPermanentFlags = (TPM_PERMANENT_FLAGS *)&RecvBuffer[sizeof (TPM_RSP_COMMAND_HDR) + sizeof (UINT32)];\r
170	if (Deactivated != NULL) {\r
171	*Deactivated = TpmPermanentFlags->deactivated;\r
172	}\r
173	\r
174	if (LifetimeLock != NULL) {\r
175	*LifetimeLock = TpmPermanentFlags->physicalPresenceLifetimeLock;\r
176	}\r
177	\r
178	if (CmdEnable != NULL) {\r
179	*CmdEnable = TpmPermanentFlags->physicalPresenceCMDEnable;\r
180	}\r
181	return Status;\r
182	}\r
183	\r
184	/**\r
185	Extend a TPM PCR.\r
186	\r
187	@param[in] PeiServices Describes the list of possible PEI Services.\r
188	@param[in] TpmHandle TPM handle. \r
189	@param[in] DigestToExtend The 160 bit value representing the event to be recorded. \r
190	@param[in] PcrIndex The PCR to be updated.\r
191	@param[out] NewPcrValue New PCR value after extend. \r
192	\r
193	@retval EFI_SUCCESS Operation completed successfully.\r
194	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
195	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
196	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
197	\r
198	**/\r
199	EFI_STATUS\r
200	TpmCommExtend (\r
201	IN EFI_PEI_SERVICES **PeiServices,\r
202	IN TIS_TPM_HANDLE TpmHandle,\r
203	IN TPM_DIGEST *DigestToExtend,\r
204	IN TPM_PCRINDEX PcrIndex,\r
205	OUT TPM_DIGEST *NewPcrValue\r
206	)\r
207	{\r
208	EFI_STATUS Status;\r
209	UINT32 TpmSendSize;\r
210	UINT32 TpmRecvSize;\r
211	TPM_CMD_EXTEND SendBuffer;\r
212	UINT8 RecvBuffer[10 + sizeof(TPM_DIGEST)];\r
213	\r
214	//\r
215	// send Tpm command TPM_ORD_Extend\r
216	//\r
217	TpmRecvSize = sizeof (TPM_RSP_COMMAND_HDR) + sizeof (TPM_DIGEST);\r
218	TpmSendSize = sizeof (TPM_CMD_EXTEND);\r
219	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
220	SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize);\r
221	SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_Extend);\r
222	SendBuffer.PcrIndex = SwapBytes32 (PcrIndex);\r
223	CopyMem (&SendBuffer.TpmDigest, (UINT8 *)DigestToExtend, sizeof (TPM_DIGEST));\r
224	Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
6f785cfc JY	225	if (EFI_ERROR (Status)) {\r
	226	return Status;\r
	227	}\r
0c18794e	228	\r
	229	if(NewPcrValue != NULL) {\r
	230	CopyMem ((UINT8*)NewPcrValue, &RecvBuffer[10], sizeof (TPM_DIGEST));\r
	231	}\r
	232	\r
	233	return Status;\r
	234	}\r
	235	\r
	236	\r
	237	/**\r
	238	Send TSC_PhysicalPresence command to TPM.\r
	239	\r
	240	@param[in] PeiServices Describes the list of possible PEI Services.\r
	241	@param[in] TpmHandle TPM handle. \r
	242	@param[in] PhysicalPresence The state to set the TPMs Physical Presence flags. \r
	243	\r
	244	@retval EFI_SUCCESS Operation completed successfully.\r
	245	@retval EFI_TIMEOUT The register can't run into the expected status in time.\r
	246	@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r
	247	@retval EFI_DEVICE_ERROR Unexpected device behavior.\r
	248	\r
	249	**/\r
	250	EFI_STATUS\r
	251	TpmCommPhysicalPresence (\r
	252	IN EFI_PEI_SERVICES **PeiServices,\r
	253	IN TIS_TPM_HANDLE TpmHandle,\r
	254	IN TPM_PHYSICAL_PRESENCE PhysicalPresence\r
	255	)\r
	256	{\r
	257	EFI_STATUS Status;\r
	258	UINT32 TpmSendSize;\r
	259	UINT32 TpmRecvSize;\r
	260	TPM_CMD_PHYSICAL_PRESENCE SendBuffer;\r
	261	UINT8 RecvBuffer[10];\r
	262	\r
	263	//\r
	264	// send Tpm command TSC_ORD_PhysicalPresence\r
	265	//\r
	266	TpmRecvSize = 10;\r
	267	TpmSendSize = sizeof (TPM_CMD_PHYSICAL_PRESENCE);\r
	268	SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r
	269	SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize);\r
	270	SendBuffer.Hdr.ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence);\r
	271	SendBuffer.PhysicalPresence = SwapBytes16 (PhysicalPresence);\r
	272	Status = TisTpmCommand (PeiServices, TpmHandle, (UINT8 *)&SendBuffer, TpmSendSize, RecvBuffer, &TpmRecvSize);\r
	273	return Status;\r
	274	}\r