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a332cfd3 | 1 | /** @file\r |
2 | This library is used by other modules to measure data to TPM.\r | |
3 | \r | |
b3548d32 | 4 | Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved. <BR>\r |
289b714b | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a332cfd3 | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <PiDxe.h>\r | |
10 | \r | |
11 | #include <Protocol/TcgService.h>\r | |
1abfa4ce | 12 | #include <Protocol/Tcg2Protocol.h>\r |
a332cfd3 | 13 | \r |
14 | #include <Library/BaseMemoryLib.h>\r | |
15 | #include <Library/MemoryAllocationLib.h>\r | |
16 | #include <Library/UefiBootServicesTableLib.h>\r | |
17 | #include <Library/DebugLib.h>\r | |
18 | #include <Library/TpmMeasurementLib.h>\r | |
19 | \r | |
20 | #include <Guid/Acpi.h>\r | |
21 | #include <IndustryStandard/Acpi.h>\r | |
22 | \r | |
a332cfd3 | 23 | /**\r |
24 | Tpm12 measure and log data, and extend the measurement result into a specific PCR.\r | |
25 | \r | |
26 | @param[in] PcrIndex PCR Index.\r | |
27 | @param[in] EventType Event type.\r | |
28 | @param[in] EventLog Measurement event log.\r | |
29 | @param[in] LogLen Event log length in bytes.\r | |
30 | @param[in] HashData The start of the data buffer to be hashed, extended.\r | |
31 | @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r | |
32 | \r | |
33 | @retval EFI_SUCCESS Operation completed successfully.\r | |
34 | @retval EFI_UNSUPPORTED TPM device not available.\r | |
35 | @retval EFI_OUT_OF_RESOURCES Out of memory.\r | |
36 | @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r | |
37 | **/\r | |
a332cfd3 | 38 | EFI_STATUS\r |
39 | Tpm12MeasureAndLogData (\r | |
c411b485 MK |
40 | IN UINT32 PcrIndex,\r |
41 | IN UINT32 EventType,\r | |
42 | IN VOID *EventLog,\r | |
43 | IN UINT32 LogLen,\r | |
44 | IN VOID *HashData,\r | |
45 | IN UINT64 HashDataLen\r | |
a332cfd3 | 46 | )\r |
47 | {\r | |
c411b485 MK |
48 | EFI_STATUS Status;\r |
49 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
50 | TCG_PCR_EVENT *TcgEvent;\r | |
51 | EFI_PHYSICAL_ADDRESS EventLogLastEntry;\r | |
52 | UINT32 EventNumber;\r | |
a332cfd3 | 53 | \r |
54 | TcgEvent = NULL;\r | |
55 | \r | |
56 | //\r | |
d6b926e7 | 57 | // Tpm activation state is checked in HashLogExtendEvent\r |
a332cfd3 | 58 | //\r |
c411b485 MK |
59 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r |
60 | if (EFI_ERROR (Status)) {\r | |
a332cfd3 | 61 | return Status;\r |
62 | }\r | |
63 | \r | |
64 | TcgEvent = (TCG_PCR_EVENT *)AllocateZeroPool (sizeof (TCG_PCR_EVENT_HDR) + LogLen);\r | |
c411b485 | 65 | if (TcgEvent == NULL) {\r |
a332cfd3 | 66 | return EFI_OUT_OF_RESOURCES;\r |
67 | }\r | |
68 | \r | |
69 | TcgEvent->PCRIndex = PcrIndex;\r | |
70 | TcgEvent->EventType = EventType;\r | |
71 | TcgEvent->EventSize = LogLen;\r | |
72 | CopyMem (&TcgEvent->Event[0], EventLog, LogLen);\r | |
73 | EventNumber = 1;\r | |
c411b485 MK |
74 | Status = TcgProtocol->HashLogExtendEvent (\r |
75 | TcgProtocol,\r | |
76 | (EFI_PHYSICAL_ADDRESS)(UINTN)HashData,\r | |
77 | HashDataLen,\r | |
78 | TPM_ALG_SHA,\r | |
79 | TcgEvent,\r | |
80 | &EventNumber,\r | |
81 | &EventLogLastEntry\r | |
82 | );\r | |
a332cfd3 | 83 | \r |
84 | FreePool (TcgEvent);\r | |
85 | \r | |
86 | return Status;\r | |
87 | }\r | |
88 | \r | |
c1d93242 JY |
89 | /**\r |
90 | Tpm20 measure and log data, and extend the measurement result into a specific PCR.\r | |
91 | \r | |
92 | @param[in] PcrIndex PCR Index.\r | |
93 | @param[in] EventType Event type.\r | |
94 | @param[in] EventLog Measurement event log.\r | |
95 | @param[in] LogLen Event log length in bytes.\r | |
96 | @param[in] HashData The start of the data buffer to be hashed, extended.\r | |
97 | @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r | |
98 | \r | |
99 | @retval EFI_SUCCESS Operation completed successfully.\r | |
100 | @retval EFI_UNSUPPORTED TPM device not available.\r | |
101 | @retval EFI_OUT_OF_RESOURCES Out of memory.\r | |
102 | @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r | |
103 | **/\r | |
104 | EFI_STATUS\r | |
105 | Tpm20MeasureAndLogData (\r | |
c411b485 MK |
106 | IN UINT32 PcrIndex,\r |
107 | IN UINT32 EventType,\r | |
108 | IN VOID *EventLog,\r | |
109 | IN UINT32 LogLen,\r | |
110 | IN VOID *HashData,\r | |
111 | IN UINT64 HashDataLen\r | |
c1d93242 JY |
112 | )\r |
113 | {\r | |
c411b485 MK |
114 | EFI_STATUS Status;\r |
115 | EFI_TCG2_PROTOCOL *Tcg2Protocol;\r | |
116 | EFI_TCG2_EVENT *Tcg2Event;\r | |
c1d93242 JY |
117 | \r |
118 | //\r | |
1abfa4ce | 119 | // TPMPresentFlag is checked in HashLogExtendEvent\r |
c1d93242 | 120 | //\r |
c411b485 | 121 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **)&Tcg2Protocol);\r |
c1d93242 JY |
122 | if (EFI_ERROR (Status)) {\r |
123 | return Status;\r | |
124 | }\r | |
125 | \r | |
c411b485 MK |
126 | Tcg2Event = (EFI_TCG2_EVENT *)AllocateZeroPool (LogLen + sizeof (EFI_TCG2_EVENT));\r |
127 | if (Tcg2Event == NULL) {\r | |
c1d93242 JY |
128 | return EFI_OUT_OF_RESOURCES;\r |
129 | }\r | |
130 | \r | |
c411b485 MK |
131 | Tcg2Event->Size = (UINT32)LogLen + sizeof (EFI_TCG2_EVENT) - sizeof (Tcg2Event->Event);\r |
132 | Tcg2Event->Header.HeaderSize = sizeof (EFI_TCG2_EVENT_HEADER);\r | |
1abfa4ce JY |
133 | Tcg2Event->Header.HeaderVersion = EFI_TCG2_EVENT_HEADER_VERSION;\r |
134 | Tcg2Event->Header.PCRIndex = PcrIndex;\r | |
135 | Tcg2Event->Header.EventType = EventType;\r | |
136 | CopyMem (&Tcg2Event->Event[0], EventLog, LogLen);\r | |
c1d93242 | 137 | \r |
1abfa4ce JY |
138 | Status = Tcg2Protocol->HashLogExtendEvent (\r |
139 | Tcg2Protocol,\r | |
c1d93242 JY |
140 | 0,\r |
141 | (EFI_PHYSICAL_ADDRESS)(UINTN)HashData,\r | |
142 | HashDataLen,\r | |
1abfa4ce | 143 | Tcg2Event\r |
c1d93242 | 144 | );\r |
1abfa4ce | 145 | FreePool (Tcg2Event);\r |
c1d93242 JY |
146 | \r |
147 | return Status;\r | |
148 | }\r | |
149 | \r | |
a332cfd3 | 150 | /**\r |
151 | Tpm measure and log data, and extend the measurement result into a specific PCR.\r | |
152 | \r | |
153 | @param[in] PcrIndex PCR Index.\r | |
154 | @param[in] EventType Event type.\r | |
155 | @param[in] EventLog Measurement event log.\r | |
156 | @param[in] LogLen Event log length in bytes.\r | |
157 | @param[in] HashData The start of the data buffer to be hashed, extended.\r | |
158 | @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r | |
159 | \r | |
160 | @retval EFI_SUCCESS Operation completed successfully.\r | |
161 | @retval EFI_UNSUPPORTED TPM device not available.\r | |
162 | @retval EFI_OUT_OF_RESOURCES Out of memory.\r | |
163 | @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r | |
164 | **/\r | |
a332cfd3 | 165 | EFI_STATUS\r |
b3548d32 | 166 | EFIAPI\r |
a332cfd3 | 167 | TpmMeasureAndLogData (\r |
c411b485 MK |
168 | IN UINT32 PcrIndex,\r |
169 | IN UINT32 EventType,\r | |
170 | IN VOID *EventLog,\r | |
171 | IN UINT32 LogLen,\r | |
172 | IN VOID *HashData,\r | |
173 | IN UINT64 HashDataLen\r | |
a332cfd3 | 174 | )\r |
175 | {\r | |
176 | EFI_STATUS Status;\r | |
177 | \r | |
178 | //\r | |
d9e206d4 | 179 | // Try to measure using Tpm20 protocol\r |
a332cfd3 | 180 | //\r |
c411b485 | 181 | Status = Tpm20MeasureAndLogData (\r |
d9e206d4 ZC |
182 | PcrIndex,\r |
183 | EventType,\r | |
184 | EventLog,\r | |
185 | LogLen,\r | |
186 | HashData,\r | |
187 | HashDataLen\r | |
188 | );\r | |
189 | \r | |
c1d93242 JY |
190 | if (EFI_ERROR (Status)) {\r |
191 | //\r | |
d9e206d4 | 192 | // Try to measure using Tpm1.2 protocol\r |
c1d93242 | 193 | //\r |
c411b485 | 194 | Status = Tpm12MeasureAndLogData (\r |
c1d93242 JY |
195 | PcrIndex,\r |
196 | EventType,\r | |
197 | EventLog,\r | |
198 | LogLen,\r | |
199 | HashData,\r | |
200 | HashDataLen\r | |
201 | );\r | |
202 | }\r | |
a332cfd3 | 203 | \r |
204 | return Status;\r | |
205 | }\r |