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1 | /** @file\r |
2 | Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>\r | |
3 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
4 | **/\r | |
5 | \r | |
6 | #include <PiPei.h>\r | |
7 | #include <Library/BaseLib.h>\r | |
8 | #include <Library/BaseMemoryLib.h>\r | |
9 | #include <Library/DebugLib.h>\r | |
ff0ffe59 MX |
10 | #include <IndustryStandard/Tpm20.h>\r |
11 | #include <IndustryStandard/UefiTcgPlatform.h>\r | |
12 | #include <Library/HobLib.h>\r | |
13 | #include <Library/PrintLib.h>\r | |
14 | #include <Library/TpmMeasurementLib.h>\r | |
15 | \r | |
4b0a6226 MX |
16 | #include "PeilessStartupInternal.h"\r |
17 | \r | |
ff0ffe59 MX |
18 | #pragma pack(1)\r |
19 | \r | |
20 | #define HANDOFF_TABLE_DESC "TdxTable"\r | |
21 | typedef struct {\r | |
22 | UINT8 TableDescriptionSize;\r | |
23 | UINT8 TableDescription[sizeof (HANDOFF_TABLE_DESC)];\r | |
24 | UINT64 NumberOfTables;\r | |
25 | EFI_CONFIGURATION_TABLE TableEntry[1];\r | |
26 | } TDX_HANDOFF_TABLE_POINTERS2;\r | |
27 | \r | |
28 | #define FV_HANDOFF_TABLE_DESC "Fv(XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX)"\r | |
29 | typedef struct {\r | |
30 | UINT8 BlobDescriptionSize;\r | |
31 | UINT8 BlobDescription[sizeof (FV_HANDOFF_TABLE_DESC)];\r | |
32 | EFI_PHYSICAL_ADDRESS BlobBase;\r | |
33 | UINT64 BlobLength;\r | |
34 | } FV_HANDOFF_TABLE_POINTERS2;\r | |
35 | \r | |
36 | #pragma pack()\r | |
37 | \r | |
ff0ffe59 MX |
38 | /**\r |
39 | Measure the Hoblist passed from the VMM.\r | |
40 | \r | |
41 | @param[in] VmmHobList The Hoblist pass the firmware\r | |
42 | \r | |
43 | @retval EFI_SUCCESS Fv image is measured successfully\r | |
44 | or it has been already measured.\r | |
45 | @retval Others Other errors as indicated\r | |
46 | **/\r | |
47 | EFI_STATUS\r | |
48 | EFIAPI\r | |
49 | MeasureHobList (\r | |
50 | IN CONST VOID *VmmHobList\r | |
51 | )\r | |
52 | {\r | |
53 | EFI_PEI_HOB_POINTERS Hob;\r | |
54 | TDX_HANDOFF_TABLE_POINTERS2 HandoffTables;\r | |
55 | EFI_STATUS Status;\r | |
56 | \r | |
57 | if (!TdIsEnabled ()) {\r | |
58 | ASSERT (FALSE);\r | |
59 | return EFI_UNSUPPORTED;\r | |
60 | }\r | |
61 | \r | |
62 | Hob.Raw = (UINT8 *)VmmHobList;\r | |
63 | \r | |
64 | //\r | |
65 | // Parse the HOB list until end of list.\r | |
66 | //\r | |
67 | while (!END_OF_HOB_LIST (Hob)) {\r | |
68 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
69 | }\r | |
70 | \r | |
71 | //\r | |
72 | // Init the log event for HOB measurement\r | |
73 | //\r | |
74 | \r | |
75 | HandoffTables.TableDescriptionSize = sizeof (HandoffTables.TableDescription);\r | |
76 | CopyMem (HandoffTables.TableDescription, HANDOFF_TABLE_DESC, sizeof (HandoffTables.TableDescription));\r | |
77 | HandoffTables.NumberOfTables = 1;\r | |
78 | CopyGuid (&(HandoffTables.TableEntry[0].VendorGuid), &gUefiOvmfPkgTokenSpaceGuid);\r | |
79 | HandoffTables.TableEntry[0].VendorTable = (VOID *)VmmHobList;\r | |
80 | \r | |
81 | Status = TpmMeasureAndLogData (\r | |
82 | 1, // PCRIndex\r | |
83 | EV_EFI_HANDOFF_TABLES2, // EventType\r | |
84 | (VOID *)&HandoffTables, // EventData\r | |
85 | sizeof (HandoffTables), // EventSize\r | |
86 | (UINT8 *)(UINTN)VmmHobList, // HashData\r | |
87 | (UINTN)((UINT8 *)Hob.Raw - (UINT8 *)VmmHobList) // HashDataLen\r | |
88 | );\r | |
89 | \r | |
90 | if (EFI_ERROR (Status)) {\r | |
91 | ASSERT (FALSE);\r | |
92 | }\r | |
93 | \r | |
94 | return Status;\r | |
95 | }\r | |
96 | \r | |
97 | /**\r | |
98 | Get the FvName from the FV header.\r | |
99 | \r | |
100 | Causion: The FV is untrusted input.\r | |
101 | \r | |
102 | @param[in] FvBase Base address of FV image.\r | |
103 | @param[in] FvLength Length of FV image.\r | |
104 | \r | |
105 | @return FvName pointer\r | |
106 | @retval NULL FvName is NOT found\r | |
107 | **/\r | |
108 | VOID *\r | |
109 | GetFvName (\r | |
110 | IN EFI_PHYSICAL_ADDRESS FvBase,\r | |
111 | IN UINT64 FvLength\r | |
112 | )\r | |
113 | {\r | |
114 | EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r | |
115 | EFI_FIRMWARE_VOLUME_EXT_HEADER *FvExtHeader;\r | |
116 | \r | |
117 | if (FvBase >= MAX_ADDRESS) {\r | |
118 | return NULL;\r | |
119 | }\r | |
120 | \r | |
121 | if (FvLength >= MAX_ADDRESS - FvBase) {\r | |
122 | return NULL;\r | |
123 | }\r | |
124 | \r | |
125 | if (FvLength < sizeof (EFI_FIRMWARE_VOLUME_HEADER)) {\r | |
126 | return NULL;\r | |
127 | }\r | |
128 | \r | |
129 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FvBase;\r | |
130 | if (FvHeader->ExtHeaderOffset < sizeof (EFI_FIRMWARE_VOLUME_HEADER)) {\r | |
131 | return NULL;\r | |
132 | }\r | |
133 | \r | |
134 | if (FvHeader->ExtHeaderOffset + sizeof (EFI_FIRMWARE_VOLUME_EXT_HEADER) > FvLength) {\r | |
135 | return NULL;\r | |
136 | }\r | |
137 | \r | |
138 | FvExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *)(UINTN)(FvBase + FvHeader->ExtHeaderOffset);\r | |
139 | \r | |
140 | return &FvExtHeader->FvName;\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Measure FV image.\r | |
145 | \r | |
146 | @param[in] FvBase Base address of FV image.\r | |
147 | @param[in] FvLength Length of FV image.\r | |
148 | @param[in] PcrIndex Index of PCR\r | |
149 | \r | |
150 | @retval EFI_SUCCESS Fv image is measured successfully\r | |
151 | or it has been already measured.\r | |
152 | @retval EFI_OUT_OF_RESOURCES No enough memory to log the new event.\r | |
153 | @retval EFI_DEVICE_ERROR The command was unsuccessful.\r | |
154 | \r | |
155 | **/\r | |
156 | EFI_STATUS\r | |
157 | EFIAPI\r | |
158 | MeasureFvImage (\r | |
159 | IN EFI_PHYSICAL_ADDRESS FvBase,\r | |
160 | IN UINT64 FvLength,\r | |
161 | IN UINT8 PcrIndex\r | |
162 | )\r | |
163 | {\r | |
164 | EFI_STATUS Status;\r | |
165 | FV_HANDOFF_TABLE_POINTERS2 FvBlob2;\r | |
166 | VOID *FvName;\r | |
167 | \r | |
168 | //\r | |
169 | // Init the log event for FV measurement\r | |
170 | //\r | |
171 | FvBlob2.BlobDescriptionSize = sizeof (FvBlob2.BlobDescription);\r | |
172 | CopyMem (FvBlob2.BlobDescription, FV_HANDOFF_TABLE_DESC, sizeof (FvBlob2.BlobDescription));\r | |
173 | FvName = GetFvName (FvBase, FvLength);\r | |
174 | if (FvName != NULL) {\r | |
175 | AsciiSPrint ((CHAR8 *)FvBlob2.BlobDescription, sizeof (FvBlob2.BlobDescription), "Fv(%g)", FvName);\r | |
176 | }\r | |
177 | \r | |
178 | FvBlob2.BlobBase = FvBase;\r | |
179 | FvBlob2.BlobLength = FvLength;\r | |
180 | \r | |
181 | Status = TpmMeasureAndLogData (\r | |
182 | 1, // PCRIndex\r | |
183 | EV_EFI_PLATFORM_FIRMWARE_BLOB2, // EventType\r | |
184 | (VOID *)&FvBlob2, // EventData\r | |
185 | sizeof (FvBlob2), // EventSize\r | |
186 | (UINT8 *)(UINTN)FvBase, // HashData\r | |
187 | (UINTN)(FvLength) // HashDataLen\r | |
188 | );\r | |
189 | \r | |
190 | if (EFI_ERROR (Status)) {\r | |
191 | DEBUG ((DEBUG_ERROR, "The FV which failed to be measured starts at: 0x%x\n", FvBase));\r | |
192 | ASSERT (FALSE);\r | |
193 | }\r | |
194 | \r | |
195 | return Status;\r | |
196 | }\r |