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1 /** @file
2 TPM2 Protocol as defined in TCG PC Client Platform EFI Protocol Specification Family "2.0".
3 See http://trustedcomputinggroup.org for the latest specification
4
5 Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16 #ifndef __TCG2_PROTOCOL_H__
17 #define __TCG2_PROTOCOL_H__
18
19 #include <IndustryStandard/UefiTcgPlatform.h>
20 #include <IndustryStandard/Tpm20.h>
21
22 #define EFI_TCG2_PROTOCOL_GUID \
23 {0x607f766c, 0x7455, 0x42be, { 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f }}
24
25 typedef struct tdEFI_TCG2_PROTOCOL EFI_TCG2_PROTOCOL;
26
27 typedef struct tdEFI_TCG2_VERSION {
28 UINT8 Major;
29 UINT8 Minor;
30 } EFI_TCG2_VERSION;
31
32 typedef UINT32 EFI_TCG2_EVENT_LOG_BITMAP;
33 typedef UINT32 EFI_TCG2_EVENT_LOG_FORMAT;
34 typedef UINT32 EFI_TCG2_EVENT_ALGORITHM_BITMAP;
35
36 #define EFI_TCG2_EVENT_LOG_FORMAT_TCG_1_2 0x00000001
37 #define EFI_TCG2_EVENT_LOG_FORMAT_TCG_2 0x00000002
38
39 typedef struct tdEFI_TCG2_BOOT_SERVICE_CAPABILITY {
40 //
41 // Allocated size of the structure
42 //
43 UINT8 Size;
44 //
45 // Version of the EFI_TCG2_BOOT_SERVICE_CAPABILITY structure itself.
46 // For this version of the protocol, the Major version shall be set to 1
47 // and the Minor version shall be set to 1.
48 //
49 EFI_TCG2_VERSION StructureVersion;
50 //
51 // Version of the EFI TCG2 protocol.
52 // For this version of the protocol, the Major version shall be set to 1
53 // and the Minor version shall be set to 1.
54 //
55 EFI_TCG2_VERSION ProtocolVersion;
56 //
57 // Supported hash algorithms (this bitmap is determined by the supported PCR
58 // banks in the TPM and the hashing algorithms supported by the firmware)
59 //
60 EFI_TCG2_EVENT_ALGORITHM_BITMAP HashAlgorithmBitmap;
61 //
62 // Bitmap of supported event log formats
63 //
64 EFI_TCG2_EVENT_LOG_BITMAP SupportedEventLogs;
65 //
66 // False = TPM not present
67 //
68 BOOLEAN TPMPresentFlag;
69 //
70 // Max size (in bytes) of a command that can be sent to the TPM
71 //
72 UINT16 MaxCommandSize;
73 //
74 // Max size (in bytes) of a response that can be provided by the TPM
75 //
76 UINT16 MaxResponseSize;
77 //
78 // 4-byte Vendor ID
79 // (see TCG Vendor ID registry, Section "TPM Capabilities Vendor ID")
80 //
81 UINT32 ManufacturerID;
82 //
83 // Maximum number of PCR banks (hashing algorithms) supported.
84 // No granularity is provided to support a specific set of algorithms.
85 // Minimum value is 1.
86 //
87 UINT32 NumberOfPCRBanks;
88 //
89 // A bitmap of currently active PCR banks (hashing algorithms).
90 // This is a subset of the supported hashing algorithms reported in HashAlgorithmBitMap.
91 // NumberOfPcrBanks defines the number of bits that are set.
92 //
93 EFI_TCG2_EVENT_ALGORITHM_BITMAP ActivePcrBanks;
94 } EFI_TCG2_BOOT_SERVICE_CAPABILITY;
95
96 #define EFI_TCG2_BOOT_HASH_ALG_SHA1 0x00000001
97 #define EFI_TCG2_BOOT_HASH_ALG_SHA256 0x00000002
98 #define EFI_TCG2_BOOT_HASH_ALG_SHA384 0x00000004
99 #define EFI_TCG2_BOOT_HASH_ALG_SHA512 0x00000008
100 #define EFI_TCG2_BOOT_HASH_ALG_SM3_256 0x00000010
101
102 //
103 // This bit is shall be set when an event shall be extended but not logged.
104 //
105 #define EFI_TCG2_EXTEND_ONLY 0x0000000000000001
106 //
107 // This bit shall be set when the intent is to measure a PE/COFF image.
108 //
109 #define PE_COFF_IMAGE 0x0000000000000010
110
111 #define MAX_PCR_INDEX 23
112
113 #pragma pack(1)
114
115 #define EFI_TCG2_EVENT_HEADER_VERSION 1
116
117 typedef struct {
118 //
119 // Size of the event header itself (sizeof(EFI_TCG2_EVENT_HEADER)).
120 //
121 UINT32 HeaderSize;
122 //
123 // Header version. For this version of this specification, the value shall be 1.
124 //
125 UINT16 HeaderVersion;
126 //
127 // Index of the PCR that shall be extended (0 - 23).
128 //
129 TCG_PCRINDEX PCRIndex;
130 //
131 // Type of the event that shall be extended (and optionally logged).
132 //
133 TCG_EVENTTYPE EventType;
134 } EFI_TCG2_EVENT_HEADER;
135
136 typedef struct tdEFI_TCG2_EVENT {
137 //
138 // Total size of the event including the Size component, the header and the Event data.
139 //
140 UINT32 Size;
141 EFI_TCG2_EVENT_HEADER Header;
142 UINT8 Event[1];
143 } EFI_TCG2_EVENT;
144
145 #pragma pack()
146
147 /**
148 The EFI_TCG2_PROTOCOL GetCapability function call provides protocol
149 capability information and state information.
150
151 @param[in] This Indicates the calling context
152 @param[in, out] ProtocolCapability The caller allocates memory for a EFI_TCG2_BOOT_SERVICE_CAPABILITY
153 structure and sets the size field to the size of the structure allocated.
154 The callee fills in the fields with the EFI protocol capability information
155 and the current EFI TCG2 state information up to the number of fields which
156 fit within the size of the structure passed in.
157
158 @retval EFI_SUCCESS Operation completed successfully.
159 @retval EFI_DEVICE_ERROR The command was unsuccessful.
160 The ProtocolCapability variable will not be populated.
161 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
162 The ProtocolCapability variable will not be populated.
163 @retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.
164 It will be partially populated (required Size field will be set).
165 **/
166 typedef
167 EFI_STATUS
168 (EFIAPI *EFI_TCG2_GET_CAPABILITY) (
169 IN EFI_TCG2_PROTOCOL *This,
170 IN OUT EFI_TCG2_BOOT_SERVICE_CAPABILITY *ProtocolCapability
171 );
172
173 /**
174 The EFI_TCG2_PROTOCOL Get Event Log function call allows a caller to
175 retrieve the address of a given event log and its last entry.
176
177 @param[in] This Indicates the calling context
178 @param[in] EventLogFormat The type of the event log for which the information is requested.
179 @param[out] EventLogLocation A pointer to the memory address of the event log.
180 @param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the
181 address of the start of the last entry in the event log in memory.
182 @param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would
183 have exceeded the area allocated for events, this value is set to TRUE.
184 Otherwise, the value will be FALSE and the Event Log will be complete.
185
186 @retval EFI_SUCCESS Operation completed successfully.
187 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect
188 (e.g. asking for an event log whose format is not supported).
189 **/
190 typedef
191 EFI_STATUS
192 (EFIAPI *EFI_TCG2_GET_EVENT_LOG) (
193 IN EFI_TCG2_PROTOCOL *This,
194 IN EFI_TCG2_EVENT_LOG_FORMAT EventLogFormat,
195 OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,
196 OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,
197 OUT BOOLEAN *EventLogTruncated
198 );
199
200 /**
201 The EFI_TCG2_PROTOCOL HashLogExtendEvent function call provides callers with
202 an opportunity to extend and optionally log events without requiring
203 knowledge of actual TPM commands.
204 The extend operation will occur even if this function cannot create an event
205 log entry (e.g. due to the event log being full).
206
207 @param[in] This Indicates the calling context
208 @param[in] Flags Bitmap providing additional information.
209 @param[in] DataToHash Physical address of the start of the data buffer to be hashed.
210 @param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.
211 @param[in] EfiTcgEvent Pointer to data buffer containing information about the event.
212
213 @retval EFI_SUCCESS Operation completed successfully.
214 @retval EFI_DEVICE_ERROR The command was unsuccessful.
215 @retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.
216 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
217 @retval EFI_UNSUPPORTED The PE/COFF image type is not supported.
218 **/
219 typedef
220 EFI_STATUS
221 (EFIAPI * EFI_TCG2_HASH_LOG_EXTEND_EVENT) (
222 IN EFI_TCG2_PROTOCOL *This,
223 IN UINT64 Flags,
224 IN EFI_PHYSICAL_ADDRESS DataToHash,
225 IN UINT64 DataToHashLen,
226 IN EFI_TCG2_EVENT *EfiTcgEvent
227 );
228
229 /**
230 This service enables the sending of commands to the TPM.
231
232 @param[in] This Indicates the calling context
233 @param[in] InputParameterBlockSize Size of the TPM input parameter block.
234 @param[in] InputParameterBlock Pointer to the TPM input parameter block.
235 @param[in] OutputParameterBlockSize Size of the TPM output parameter block.
236 @param[in] OutputParameterBlock Pointer to the TPM output parameter block.
237
238 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
239 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
240 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
241 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
242 **/
243 typedef
244 EFI_STATUS
245 (EFIAPI *EFI_TCG2_SUBMIT_COMMAND) (
246 IN EFI_TCG2_PROTOCOL *This,
247 IN UINT32 InputParameterBlockSize,
248 IN UINT8 *InputParameterBlock,
249 IN UINT32 OutputParameterBlockSize,
250 IN UINT8 *OutputParameterBlock
251 );
252
253 /**
254 This service returns the currently active PCR banks.
255
256 @param[in] This Indicates the calling context
257 @param[out] ActivePcrBanks Pointer to the variable receiving the bitmap of currently active PCR banks.
258
259 @retval EFI_SUCCESS The bitmap of active PCR banks was stored in the ActivePcrBanks parameter.
260 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
261 **/
262 typedef
263 EFI_STATUS
264 (EFIAPI *EFI_TCG2_GET_ACTIVE_PCR_BANKS) (
265 IN EFI_TCG2_PROTOCOL *This,
266 OUT UINT32 *ActivePcrBanks
267 );
268
269 /**
270 This service sets the currently active PCR banks.
271
272 @param[in] This Indicates the calling context
273 @param[in] ActivePcrBanks Bitmap of the requested active PCR banks. At least one bit SHALL be set.
274
275 @retval EFI_SUCCESS The bitmap in ActivePcrBank parameter is already active.
276 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
277 **/
278 typedef
279 EFI_STATUS
280 (EFIAPI *EFI_TCG2_SET_ACTIVE_PCR_BANKS) (
281 IN EFI_TCG2_PROTOCOL *This,
282 IN UINT32 ActivePcrBanks
283 );
284
285 /**
286 This service retrieves the result of a previous invocation of SetActivePcrBanks.
287
288 @param[in] This Indicates the calling context
289 @param[out] OperationPresent Non-zero value to indicate a SetActivePcrBank operation was invoked during the last boot.
290 @param[out] Response The response from the SetActivePcrBank request.
291
292 @retval EFI_SUCCESS The result value could be returned.
293 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.
294 **/
295 typedef
296 EFI_STATUS
297 (EFIAPI *EFI_TCG2_GET_RESULT_OF_SET_ACTIVE_PCR_BANKS) (
298 IN EFI_TCG2_PROTOCOL *This,
299 OUT UINT32 *OperationPresent,
300 OUT UINT32 *Response
301 );
302
303 struct tdEFI_TCG2_PROTOCOL {
304 EFI_TCG2_GET_CAPABILITY GetCapability;
305 EFI_TCG2_GET_EVENT_LOG GetEventLog;
306 EFI_TCG2_HASH_LOG_EXTEND_EVENT HashLogExtendEvent;
307 EFI_TCG2_SUBMIT_COMMAND SubmitCommand;
308 EFI_TCG2_GET_ACTIVE_PCR_BANKS GetActivePcrBanks;
309 EFI_TCG2_SET_ACTIVE_PCR_BANKS SetActivePcrBanks;
310 EFI_TCG2_GET_RESULT_OF_SET_ACTIVE_PCR_BANKS GetResultOfSetActivePcrBanks;
311 };
312
313 extern EFI_GUID gEfiTcg2ProtocolGuid;
314
315 //
316 // Log entries after Get Event Log service
317 //
318
319 #define EFI_TCG2_FINAL_EVENTS_TABLE_GUID \
320 {0x1e2ed096, 0x30e2, 0x4254, { 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25 }}
321
322 extern EFI_GUID gEfiTcg2FinalEventsTableGuid;
323
324 typedef struct tdEFI_TCG2_FINAL_EVENTS_TABLE {
325 //
326 // The version of this structure.
327 //
328 UINT64 Version;
329 //
330 // Number of events recorded after invocation of GetEventLog API
331 //
332 UINT64 NumberOfEvents;
333 //
334 // List of events of type TCG_PCR_EVENT2.
335 //
336 //TCG_PCR_EVENT2 Event[1];
337 } EFI_TCG2_FINAL_EVENTS_TABLE;
338
339 #define EFI_TCG2_FINAL_EVENTS_TABLE_VERSION 1
340
341 #endif