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a4ce9ffd JJ |
1 | /**@file\r |
2 | \r | |
ea0d111e | 3 | Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r |
141f0c64 | 4 | \r |
ea0d111e LE |
5 | This program and the accompanying materials are licensed and made available\r |
6 | under the terms and conditions of the BSD License which accompanies this\r | |
7 | distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
a4ce9ffd | 9 | \r |
ea0d111e LE |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
a4ce9ffd | 12 | \r |
ea0d111e | 13 | Module Name:\r |
a4ce9ffd | 14 | \r |
ea0d111e | 15 | FvbInfo.c\r |
a4ce9ffd | 16 | \r |
ea0d111e LE |
17 | Abstract:\r |
18 | \r | |
19 | Defines data structure that is the volume header found.These data is intent\r | |
20 | to decouple FVB driver with FV header.\r | |
a4ce9ffd JJ |
21 | \r |
22 | **/\r | |
23 | \r | |
24 | //\r | |
25 | // The package level header files this module uses\r | |
26 | //\r | |
27 | #include <PiDxe.h>\r | |
28 | //\r | |
29 | // The protocols, PPI and GUID defintions for this module\r | |
30 | //\r | |
31 | #include <Guid/EventGroup.h>\r | |
32 | #include <Guid/FirmwareFileSystem2.h>\r | |
33 | #include <Guid/SystemNvDataGuid.h>\r | |
34 | #include <Protocol/FirmwareVolumeBlock.h>\r | |
35 | #include <Protocol/DevicePath.h>\r | |
36 | //\r | |
37 | // The Library classes this module consumes\r | |
38 | //\r | |
39 | #include <Library/UefiLib.h>\r | |
40 | #include <Library/UefiDriverEntryPoint.h>\r | |
41 | #include <Library/BaseLib.h>\r | |
42 | #include <Library/DxeServicesTableLib.h>\r | |
43 | #include <Library/UefiRuntimeLib.h>\r | |
44 | #include <Library/DebugLib.h>\r | |
45 | #include <Library/HobLib.h>\r | |
46 | #include <Library/BaseMemoryLib.h>\r | |
47 | #include <Library/MemoryAllocationLib.h>\r | |
48 | #include <Library/UefiBootServicesTableLib.h>\r | |
49 | #include <Library/PcdLib.h>\r | |
50 | \r | |
51 | typedef struct {\r | |
52 | UINT64 FvLength;\r | |
53 | EFI_FIRMWARE_VOLUME_HEADER FvbInfo;\r | |
54 | //\r | |
55 | // EFI_FV_BLOCK_MAP_ENTRY ExtraBlockMap[n];//n=0\r | |
56 | //\r | |
57 | EFI_FV_BLOCK_MAP_ENTRY End[1];\r | |
58 | } EFI_FVB_MEDIA_INFO;\r | |
59 | \r | |
60 | EFI_FVB_MEDIA_INFO mPlatformFvbMediaInfo[] = {\r | |
61 | //\r | |
62 | // Systen NvStorage FVB\r | |
63 | //\r | |
64 | {\r | |
65 | FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
66 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
67 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
68 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize),\r | |
69 | {\r | |
70 | {\r | |
71 | 0,\r | |
72 | }, // ZeroVector[16]\r | |
73 | EFI_SYSTEM_NV_DATA_FV_GUID,\r | |
74 | FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
75 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
76 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
77 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize),\r | |
78 | EFI_FVH_SIGNATURE,\r | |
141f0c64 | 79 | EFI_FVB2_MEMORY_MAPPED |\r |
a4ce9ffd JJ |
80 | EFI_FVB2_READ_ENABLED_CAP |\r |
81 | EFI_FVB2_READ_STATUS |\r | |
82 | EFI_FVB2_WRITE_ENABLED_CAP |\r | |
83 | EFI_FVB2_WRITE_STATUS |\r | |
84 | EFI_FVB2_ERASE_POLARITY |\r | |
85 | EFI_FVB2_ALIGNMENT_16,\r | |
86 | sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY),\r | |
87 | 0, // CheckSum\r | |
88 | 0, // ExtHeaderOffset\r | |
89 | {\r | |
90 | 0,\r | |
91 | }, // Reserved[1]\r | |
92 | 2, // Revision\r | |
93 | {\r | |
84043adf LE |
94 | {\r |
95 | (FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
96 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
97 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
ea0d111e LE |
98 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize)) /\r |
99 | FixedPcdGet32 (PcdOvmfFirmwareBlockSize),\r | |
84043adf LE |
100 | FixedPcdGet32 (PcdOvmfFirmwareBlockSize),\r |
101 | }\r | |
102 | } // BlockMap[1]\r | |
a4ce9ffd JJ |
103 | },\r |
104 | {\r | |
84043adf LE |
105 | {\r |
106 | 0,\r | |
107 | 0\r | |
108 | }\r | |
109 | } // End[1]\r | |
a4ce9ffd JJ |
110 | }\r |
111 | };\r | |
112 | \r | |
113 | EFI_STATUS\r | |
114 | GetFvbInfo (\r | |
115 | IN UINT64 FvLength,\r | |
116 | OUT EFI_FIRMWARE_VOLUME_HEADER **FvbInfo\r | |
117 | )\r | |
118 | {\r | |
119 | STATIC BOOLEAN Checksummed = FALSE;\r | |
120 | UINTN Index;\r | |
121 | \r | |
122 | if (!Checksummed) {\r | |
ea0d111e LE |
123 | for (Index = 0;\r |
124 | Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB_MEDIA_INFO);\r | |
125 | Index += 1) {\r | |
a4ce9ffd JJ |
126 | UINT16 Checksum;\r |
127 | mPlatformFvbMediaInfo[Index].FvbInfo.Checksum = 0;\r | |
128 | Checksum = CalculateCheckSum16 (\r | |
129 | (UINT16*) &mPlatformFvbMediaInfo[Index].FvbInfo,\r | |
130 | mPlatformFvbMediaInfo[Index].FvbInfo.HeaderLength\r | |
131 | );\r | |
132 | mPlatformFvbMediaInfo[Index].FvbInfo.Checksum = Checksum;\r | |
133 | }\r | |
134 | Checksummed = TRUE;\r | |
135 | }\r | |
136 | \r | |
ea0d111e LE |
137 | for (Index = 0;\r |
138 | Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB_MEDIA_INFO);\r | |
139 | Index += 1) {\r | |
a4ce9ffd JJ |
140 | if (mPlatformFvbMediaInfo[Index].FvLength == FvLength) {\r |
141 | *FvbInfo = &mPlatformFvbMediaInfo[Index].FvbInfo;\r | |
142 | return EFI_SUCCESS;\r | |
143 | }\r | |
144 | }\r | |
145 | \r | |
146 | return EFI_NOT_FOUND;\r | |
147 | }\r |