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2e61fb38 1/** @file\r
e3917fc7 2 This protocol is defined to abstract TPM2 hardware access in boot phase.\r
2e61fb38 3\r
9095d37b 4Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.<BR>\r
9344f092 5SPDX-License-Identifier: BSD-2-Clause-Patent\r
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6\r
7**/\r
8\r
9#ifndef __TREE_H__\r
10#define __TREE_H__\r
11\r
12#include <IndustryStandard/UefiTcgPlatform.h>\r
13#include <IndustryStandard/Tpm20.h>\r
14\r
15#define EFI_TREE_PROTOCOL_GUID \\r
16 {0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f}\r
17\r
18typedef struct _EFI_TREE_PROTOCOL EFI_TREE_PROTOCOL;\r
19\r
20typedef struct _TREE_VERSION {\r
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21 UINT8 Major;\r
22 UINT8 Minor;\r
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23} TREE_VERSION;\r
24\r
25typedef UINT32 TREE_EVENT_LOG_BITMAP;\r
26typedef UINT32 TREE_EVENT_LOG_FORMAT;\r
27\r
2f88bd3a 28#define TREE_EVENT_LOG_FORMAT_TCG_1_2 0x00000001\r
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29\r
30typedef struct _TREE_BOOT_SERVICE_CAPABILITY {\r
31 //\r
9095d37b 32 // Allocated size of the structure passed in\r
2e61fb38 33 //\r
2f88bd3a 34 UINT8 Size;\r
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35 //\r
36 // Version of the TREE_BOOT_SERVICE_CAPABILITY structure itself.\r
37 // For this version of the protocol, the Major version shall be set to 1\r
9095d37b 38 // and the Minor version shall be set to 0.\r
2e61fb38 39 //\r
2f88bd3a 40 TREE_VERSION StructureVersion;\r
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41 //\r
42 // Version of the TrEE protocol.\r
43 // For this version of the protocol, the Major version shall be set to 1\r
9095d37b 44 // and the Minor version shall be set to 0.\r
2e61fb38 45 //\r
2f88bd3a 46 TREE_VERSION ProtocolVersion;\r
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47 //\r
48 // Supported hash algorithms\r
49 //\r
2f88bd3a 50 UINT32 HashAlgorithmBitmap;\r
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51 //\r
52 // Bitmap of supported event log formats\r
53 //\r
2f88bd3a 54 TREE_EVENT_LOG_BITMAP SupportedEventLogs;\r
2e61fb38 55 //\r
9095d37b 56 // False = TrEE not present\r
2e61fb38 57 //\r
2f88bd3a 58 BOOLEAN TrEEPresentFlag;\r
2e61fb38 59 //\r
9095d37b 60 // Max size (in bytes) of a command that can be sent to the TrEE\r
2e61fb38 61 //\r
2f88bd3a 62 UINT16 MaxCommandSize;\r
2e61fb38 63 //\r
9095d37b 64 // Max size (in bytes) of a response that can be provided by the TrEE\r
2e61fb38 65 //\r
2f88bd3a 66 UINT16 MaxResponseSize;\r
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67 //\r
68 // 4-byte Vendor ID (see Trusted Computing Group, "TCG Vendor ID Registry,"\r
9095d37b 69 // Version 1.0, Revision 0.1, August 31, 2007, "TPM Capabilities Vendor ID" section)\r
2e61fb38 70 //\r
2f88bd3a 71 UINT32 ManufacturerID;\r
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72} TREE_BOOT_SERVICE_CAPABILITY_1_0;\r
73\r
74typedef TREE_BOOT_SERVICE_CAPABILITY_1_0 TREE_BOOT_SERVICE_CAPABILITY;\r
75\r
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76#define TREE_BOOT_HASH_ALG_SHA1 0x00000001\r
77#define TREE_BOOT_HASH_ALG_SHA256 0x00000002\r
78#define TREE_BOOT_HASH_ALG_SHA384 0x00000004\r
79#define TREE_BOOT_HASH_ALG_SHA512 0x00000008\r
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80\r
81//\r
82// This bit is shall be set when an event shall be extended but not logged.\r
83//\r
84#define TREE_EXTEND_ONLY 0x0000000000000001\r
85//\r
86// This bit shall be set when the intent is to measure a PE/COFF image.\r
87//\r
2f88bd3a 88#define PE_COFF_IMAGE 0x0000000000000010\r
2e61fb38 89\r
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90typedef UINT32 TrEE_PCRINDEX;\r
91typedef UINT32 TrEE_EVENTTYPE;\r
92\r
2f88bd3a 93#define MAX_PCR_INDEX 23\r
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94#define TREE_EVENT_HEADER_VERSION 1\r
95\r
96#pragma pack(1)\r
97\r
98typedef struct {\r
99 //\r
9095d37b 100 // Size of the event header itself (sizeof(TrEE_EVENT_HEADER)).\r
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101 //\r
102 UINT32 HeaderSize;\r
103 //\r
104 // Header version. For this version of this specification, the value shall be 1.\r
105 //\r
106 UINT16 HeaderVersion;\r
107 //\r
9095d37b 108 // Index of the PCR that shall be extended (0 - 23).\r
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109 //\r
110 TrEE_PCRINDEX PCRIndex;\r
111 //\r
9095d37b 112 // Type of the event that shall be extended (and optionally logged).\r
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113 //\r
114 TrEE_EVENTTYPE EventType;\r
115} TrEE_EVENT_HEADER;\r
116\r
117typedef struct {\r
118 //\r
9095d37b 119 // Total size of the event including the Size component, the header and the Event data.\r
2e61fb38 120 //\r
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121 UINT32 Size;\r
122 TrEE_EVENT_HEADER Header;\r
123 UINT8 Event[1];\r
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124} TrEE_EVENT;\r
125\r
126#pragma pack()\r
127\r
128/**\r
129 The EFI_TREE_PROTOCOL GetCapability function call provides protocol\r
130 capability information and state information about the TrEE.\r
131\r
132 @param[in] This Indicates the calling context\r
133 @param[out] ProtocolCapability The caller allocates memory for a TREE_BOOT_SERVICE_CAPABILITY\r
134 structure and sets the size field to the size of the structure allocated.\r
135 The callee fills in the fields with the EFI protocol capability information\r
136 and the current TrEE state information up to the number of fields which\r
137 fit within the size of the structure passed in.\r
138\r
139 @retval EFI_SUCCESS Operation completed successfully.\r
140 @retval EFI_DEVICE_ERROR The command was unsuccessful.\r
9095d37b 141 The ProtocolCapability variable will not be populated.\r
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142 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
143 The ProtocolCapability variable will not be populated.\r
144 @retval EFI_BUFFER_TOO_SMALL The ProtocolCapability variable is too small to hold the full response.\r
9095d37b 145 It will be partially populated (required Size field will be set).\r
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146**/\r
147typedef\r
148EFI_STATUS\r
2f88bd3a 149(EFIAPI *EFI_TREE_GET_CAPABILITY)(\r
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150 IN EFI_TREE_PROTOCOL *This,\r
151 IN OUT TREE_BOOT_SERVICE_CAPABILITY *ProtocolCapability\r
152 );\r
153\r
154/**\r
155 The EFI_TREE_PROTOCOL Get Event Log function call allows a caller to\r
9095d37b 156 retrieve the address of a given event log and its last entry.\r
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157\r
158 @param[in] This Indicates the calling context\r
159 @param[in] EventLogFormat The type of the event log for which the information is requested.\r
160 @param[out] EventLogLocation A pointer to the memory address of the event log.\r
161 @param[out] EventLogLastEntry If the Event Log contains more than one entry, this is a pointer to the\r
162 address of the start of the last entry in the event log in memory.\r
163 @param[out] EventLogTruncated If the Event Log is missing at least one entry because an event would\r
164 have exceeded the area allocated for events, this value is set to TRUE.\r
165 Otherwise, the value will be FALSE and the Event Log will be complete.\r
166\r
167 @retval EFI_SUCCESS Operation completed successfully.\r
168 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect\r
169 (e.g. asking for an event log whose format is not supported).\r
170**/\r
171typedef\r
172EFI_STATUS\r
2f88bd3a 173(EFIAPI *EFI_TREE_GET_EVENT_LOG)(\r
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174 IN EFI_TREE_PROTOCOL *This,\r
175 IN TREE_EVENT_LOG_FORMAT EventLogFormat,\r
176 OUT EFI_PHYSICAL_ADDRESS *EventLogLocation,\r
177 OUT EFI_PHYSICAL_ADDRESS *EventLogLastEntry,\r
178 OUT BOOLEAN *EventLogTruncated\r
179 );\r
180\r
181/**\r
182 The EFI_TREE_PROTOCOL HashLogExtendEvent function call provides callers with\r
183 an opportunity to extend and optionally log events without requiring\r
9095d37b 184 knowledge of actual TPM commands.\r
2e61fb38 185 The extend operation will occur even if this function cannot create an event\r
9095d37b 186 log entry (e.g. due to the event log being full).\r
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187\r
188 @param[in] This Indicates the calling context\r
189 @param[in] Flags Bitmap providing additional information.\r
9095d37b 190 @param[in] DataToHash Physical address of the start of the data buffer to be hashed.\r
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191 @param[in] DataToHashLen The length in bytes of the buffer referenced by DataToHash.\r
192 @param[in] Event Pointer to data buffer containing information about the event.\r
193\r
194 @retval EFI_SUCCESS Operation completed successfully.\r
195 @retval EFI_DEVICE_ERROR The command was unsuccessful.\r
196 @retval EFI_VOLUME_FULL The extend operation occurred, but the event could not be written to one or more event logs.\r
197 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
198 @retval EFI_UNSUPPORTED The PE/COFF image type is not supported.\r
199**/\r
200typedef\r
201EFI_STATUS\r
2f88bd3a 202(EFIAPI *EFI_TREE_HASH_LOG_EXTEND_EVENT)(\r
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203 IN EFI_TREE_PROTOCOL *This,\r
204 IN UINT64 Flags,\r
205 IN EFI_PHYSICAL_ADDRESS DataToHash,\r
206 IN UINT64 DataToHashLen,\r
207 IN TrEE_EVENT *Event\r
208 );\r
209\r
210/**\r
211 This service enables the sending of commands to the TrEE.\r
212\r
213 @param[in] This Indicates the calling context\r
214 @param[in] InputParameterBlockSize Size of the TrEE input parameter block.\r
215 @param[in] InputParameterBlock Pointer to the TrEE input parameter block.\r
216 @param[in] OutputParameterBlockSize Size of the TrEE output parameter block.\r
217 @param[in] OutputParameterBlock Pointer to the TrEE output parameter block.\r
218\r
219 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.\r
220 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.\r
221 @retval EFI_INVALID_PARAMETER One or more of the parameters are incorrect.\r
9095d37b 222 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.\r
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223**/\r
224typedef\r
225EFI_STATUS\r
2f88bd3a 226(EFIAPI *EFI_TREE_SUBMIT_COMMAND)(\r
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227 IN EFI_TREE_PROTOCOL *This,\r
228 IN UINT32 InputParameterBlockSize,\r
229 IN UINT8 *InputParameterBlock,\r
230 IN UINT32 OutputParameterBlockSize,\r
231 IN UINT8 *OutputParameterBlock\r
232 );\r
233\r
234struct _EFI_TREE_PROTOCOL {\r
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235 EFI_TREE_GET_CAPABILITY GetCapability;\r
236 EFI_TREE_GET_EVENT_LOG GetEventLog;\r
237 EFI_TREE_HASH_LOG_EXTEND_EVENT HashLogExtendEvent;\r
238 EFI_TREE_SUBMIT_COMMAND SubmitCommand;\r
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239};\r
240\r
2f88bd3a 241extern EFI_GUID gEfiTrEEProtocolGuid;\r
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242\r
243#endif\r