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b2b02a48 SM |
1 | /** @file\r |
2 | Firmware volume helper interfaces.\r | |
6b46d772 | 3 | \r |
b2b02a48 SM |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r |
5 | Copyright (c) 2016 - 2021, Arm Limited. All rights reserved.<BR>\r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6b46d772 SV |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "StandaloneMmCore.h"\r | |
11 | #include <Library/FvLib.h>\r | |
d65e0e48 | 12 | #include <Library/ExtractGuidedSectionLib.h>\r |
6b46d772 SV |
13 | \r |
14 | //\r | |
15 | // List of file types supported by dispatcher\r | |
16 | //\r | |
17 | EFI_FV_FILETYPE mMmFileTypes[] = {\r | |
18 | EFI_FV_FILETYPE_MM,\r | |
19 | 0xE, //EFI_FV_FILETYPE_MM_STANDALONE,\r | |
20 | //\r | |
21 | // Note: DXE core will process the FV image file, so skip it in MM core\r | |
22 | // EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE\r | |
23 | //\r | |
24 | };\r | |
25 | \r | |
26 | EFI_STATUS\r | |
27 | MmAddToDriverList (\r | |
7f72ec0b LE |
28 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader,\r |
29 | IN VOID *Pe32Data,\r | |
30 | IN UINTN Pe32DataSize,\r | |
31 | IN VOID *Depex,\r | |
32 | IN UINTN DepexSize,\r | |
33 | IN EFI_GUID *DriverName\r | |
6b46d772 SV |
34 | );\r |
35 | \r | |
36 | BOOLEAN\r | |
37 | FvHasBeenProcessed (\r | |
7f72ec0b | 38 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r |
6b46d772 SV |
39 | );\r |
40 | \r | |
41 | VOID\r | |
81e9eca7 | 42 | FvIsBeingProcessed (\r |
7f72ec0b | 43 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r |
6b46d772 SV |
44 | );\r |
45 | \r | |
92df3ca8 | 46 | /**\r |
6b46d772 | 47 | Given the pointer to the Firmware Volume Header find the\r |
2a0755a9 | 48 | MM driver and return its PE32 image.\r |
6b46d772 | 49 | \r |
92df3ca8 | 50 | @param [in] FwVolHeader Pointer to memory mapped FV\r |
6b46d772 | 51 | \r |
92df3ca8 SM |
52 | @retval EFI_SUCCESS Success.\r |
53 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
54 | @retval EFI_NOT_FOUND Could not find section data.\r | |
55 | @retval EFI_OUT_OF_RESOURCES Out of resources.\r | |
56 | @retval EFI_VOLUME_CORRUPTED Firmware volume is corrupted.\r | |
57 | @retval EFI_UNSUPPORTED Operation not supported.\r | |
6b46d772 | 58 | \r |
92df3ca8 SM |
59 | **/\r |
60 | EFI_STATUS\r | |
61 | MmCoreFfsFindMmDriver (\r | |
62 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r | |
63 | )\r | |
6b46d772 | 64 | {\r |
d65e0e48 AB |
65 | EFI_STATUS Status;\r |
66 | EFI_STATUS DepexStatus;\r | |
67 | EFI_FFS_FILE_HEADER *FileHeader;\r | |
68 | EFI_FV_FILETYPE FileType;\r | |
69 | VOID *Pe32Data;\r | |
70 | UINTN Pe32DataSize;\r | |
71 | VOID *Depex;\r | |
72 | UINTN DepexSize;\r | |
73 | UINTN Index;\r | |
74 | EFI_COMMON_SECTION_HEADER *Section;\r | |
75 | VOID *SectionData;\r | |
76 | UINTN SectionDataSize;\r | |
77 | UINT32 DstBufferSize;\r | |
78 | VOID *ScratchBuffer;\r | |
79 | UINT32 ScratchBufferSize;\r | |
80 | VOID *DstBuffer;\r | |
81 | UINT16 SectionAttribute;\r | |
82 | UINT32 AuthenticationStatus;\r | |
83 | EFI_FIRMWARE_VOLUME_HEADER *InnerFvHeader;\r | |
6b46d772 SV |
84 | \r |
85 | DEBUG ((DEBUG_INFO, "MmCoreFfsFindMmDriver - 0x%x\n", FwVolHeader));\r | |
86 | \r | |
87 | if (FvHasBeenProcessed (FwVolHeader)) {\r | |
88 | return EFI_SUCCESS;\r | |
89 | }\r | |
90 | \r | |
81e9eca7 | 91 | FvIsBeingProcessed (FwVolHeader);\r |
6b46d772 | 92 | \r |
d65e0e48 AB |
93 | //\r |
94 | // First check for encapsulated compressed firmware volumes\r | |
95 | //\r | |
96 | FileHeader = NULL;\r | |
97 | do {\r | |
98 | Status = FfsFindNextFile (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,\r | |
99 | FwVolHeader, &FileHeader);\r | |
100 | if (EFI_ERROR (Status)) {\r | |
101 | break;\r | |
102 | }\r | |
103 | Status = FfsFindSectionData (EFI_SECTION_GUID_DEFINED, FileHeader,\r | |
104 | &SectionData, &SectionDataSize);\r | |
105 | if (EFI_ERROR (Status)) {\r | |
106 | break;\r | |
107 | }\r | |
108 | Section = (EFI_COMMON_SECTION_HEADER *)(FileHeader + 1);\r | |
109 | Status = ExtractGuidedSectionGetInfo (Section, &DstBufferSize,\r | |
110 | &ScratchBufferSize, &SectionAttribute);\r | |
111 | if (EFI_ERROR (Status)) {\r | |
112 | break;\r | |
113 | }\r | |
114 | \r | |
115 | //\r | |
116 | // Allocate scratch buffer\r | |
117 | //\r | |
118 | ScratchBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));\r | |
119 | if (ScratchBuffer == NULL) {\r | |
120 | return EFI_OUT_OF_RESOURCES;\r | |
121 | }\r | |
122 | \r | |
123 | //\r | |
124 | // Allocate destination buffer, extra one page for adjustment\r | |
125 | //\r | |
126 | DstBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));\r | |
127 | if (DstBuffer == NULL) {\r | |
128 | return EFI_OUT_OF_RESOURCES;\r | |
129 | }\r | |
130 | \r | |
131 | //\r | |
132 | // Call decompress function\r | |
133 | //\r | |
134 | Status = ExtractGuidedSectionDecode (Section, &DstBuffer, ScratchBuffer,\r | |
135 | &AuthenticationStatus);\r | |
136 | FreePages (ScratchBuffer, EFI_SIZE_TO_PAGES (ScratchBufferSize));\r | |
137 | if (EFI_ERROR (Status)) {\r | |
138 | goto FreeDstBuffer;\r | |
139 | }\r | |
140 | \r | |
141 | DEBUG ((DEBUG_INFO,\r | |
142 | "Processing compressed firmware volume (AuthenticationStatus == %x)\n",\r | |
143 | AuthenticationStatus));\r | |
144 | \r | |
145 | Status = FindFfsSectionInSections (DstBuffer, DstBufferSize,\r | |
146 | EFI_SECTION_FIRMWARE_VOLUME_IMAGE, &Section);\r | |
147 | if (EFI_ERROR (Status)) {\r | |
148 | goto FreeDstBuffer;\r | |
149 | }\r | |
150 | \r | |
151 | InnerFvHeader = (VOID *)(Section + 1);\r | |
152 | Status = MmCoreFfsFindMmDriver (InnerFvHeader);\r | |
153 | if (EFI_ERROR (Status)) {\r | |
154 | goto FreeDstBuffer;\r | |
155 | }\r | |
156 | } while (TRUE);\r | |
157 | \r | |
6b46d772 SV |
158 | for (Index = 0; Index < sizeof (mMmFileTypes) / sizeof (mMmFileTypes[0]); Index++) {\r |
159 | DEBUG ((DEBUG_INFO, "Check MmFileTypes - 0x%x\n", mMmFileTypes[Index]));\r | |
160 | FileType = mMmFileTypes[Index];\r | |
161 | FileHeader = NULL;\r | |
162 | do {\r | |
163 | Status = FfsFindNextFile (FileType, FwVolHeader, &FileHeader);\r | |
164 | if (!EFI_ERROR (Status)) {\r | |
165 | Status = FfsFindSectionData (EFI_SECTION_PE32, FileHeader, &Pe32Data, &Pe32DataSize);\r | |
166 | DEBUG ((DEBUG_INFO, "Find PE data - 0x%x\n", Pe32Data));\r | |
167 | DepexStatus = FfsFindSectionData (EFI_SECTION_MM_DEPEX, FileHeader, &Depex, &DepexSize);\r | |
168 | if (!EFI_ERROR (DepexStatus)) {\r | |
169 | MmAddToDriverList (FwVolHeader, Pe32Data, Pe32DataSize, Depex, DepexSize, &FileHeader->Name);\r | |
170 | }\r | |
171 | }\r | |
172 | } while (!EFI_ERROR (Status));\r | |
173 | }\r | |
174 | \r | |
d65e0e48 AB |
175 | return EFI_SUCCESS;\r |
176 | \r | |
177 | FreeDstBuffer:\r | |
178 | FreePages (DstBuffer, EFI_SIZE_TO_PAGES (DstBufferSize));\r | |
179 | \r | |
6b46d772 SV |
180 | return Status;\r |
181 | }\r |