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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 | |
0f2eb31c LE |
27 | #include <Pi/PiFirmwareVolume.h>\r |
28 | \r | |
a4ce9ffd JJ |
29 | //\r |
30 | // The protocols, PPI and GUID defintions for this module\r | |
31 | //\r | |
a4ce9ffd | 32 | #include <Guid/SystemNvDataGuid.h>\r |
a4ce9ffd JJ |
33 | //\r |
34 | // The Library classes this module consumes\r | |
35 | //\r | |
a4ce9ffd | 36 | #include <Library/BaseLib.h>\r |
a4ce9ffd JJ |
37 | #include <Library/PcdLib.h>\r |
38 | \r | |
39 | typedef struct {\r | |
40 | UINT64 FvLength;\r | |
41 | EFI_FIRMWARE_VOLUME_HEADER FvbInfo;\r | |
42 | //\r | |
43 | // EFI_FV_BLOCK_MAP_ENTRY ExtraBlockMap[n];//n=0\r | |
44 | //\r | |
45 | EFI_FV_BLOCK_MAP_ENTRY End[1];\r | |
46 | } EFI_FVB_MEDIA_INFO;\r | |
47 | \r | |
48 | EFI_FVB_MEDIA_INFO mPlatformFvbMediaInfo[] = {\r | |
49 | //\r | |
50 | // Systen NvStorage FVB\r | |
51 | //\r | |
52 | {\r | |
53 | FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
54 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
55 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
56 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize),\r | |
57 | {\r | |
58 | {\r | |
59 | 0,\r | |
60 | }, // ZeroVector[16]\r | |
61 | EFI_SYSTEM_NV_DATA_FV_GUID,\r | |
62 | FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
63 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
64 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
65 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize),\r | |
66 | EFI_FVH_SIGNATURE,\r | |
141f0c64 | 67 | EFI_FVB2_MEMORY_MAPPED |\r |
a4ce9ffd JJ |
68 | EFI_FVB2_READ_ENABLED_CAP |\r |
69 | EFI_FVB2_READ_STATUS |\r | |
70 | EFI_FVB2_WRITE_ENABLED_CAP |\r | |
71 | EFI_FVB2_WRITE_STATUS |\r | |
72 | EFI_FVB2_ERASE_POLARITY |\r | |
73 | EFI_FVB2_ALIGNMENT_16,\r | |
74 | sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY),\r | |
75 | 0, // CheckSum\r | |
76 | 0, // ExtHeaderOffset\r | |
77 | {\r | |
78 | 0,\r | |
79 | }, // Reserved[1]\r | |
80 | 2, // Revision\r | |
81 | {\r | |
84043adf LE |
82 | {\r |
83 | (FixedPcdGet32 (PcdFlashNvStorageVariableSize) +\r | |
84 | FixedPcdGet32 (PcdFlashNvStorageFtwWorkingSize) +\r | |
85 | FixedPcdGet32 (PcdFlashNvStorageFtwSpareSize) +\r | |
ea0d111e LE |
86 | FixedPcdGet32 (PcdOvmfFlashNvStorageEventLogSize)) /\r |
87 | FixedPcdGet32 (PcdOvmfFirmwareBlockSize),\r | |
84043adf LE |
88 | FixedPcdGet32 (PcdOvmfFirmwareBlockSize),\r |
89 | }\r | |
90 | } // BlockMap[1]\r | |
a4ce9ffd JJ |
91 | },\r |
92 | {\r | |
84043adf LE |
93 | {\r |
94 | 0,\r | |
95 | 0\r | |
96 | }\r | |
97 | } // End[1]\r | |
a4ce9ffd JJ |
98 | }\r |
99 | };\r | |
100 | \r | |
101 | EFI_STATUS\r | |
102 | GetFvbInfo (\r | |
103 | IN UINT64 FvLength,\r | |
104 | OUT EFI_FIRMWARE_VOLUME_HEADER **FvbInfo\r | |
105 | )\r | |
106 | {\r | |
107 | STATIC BOOLEAN Checksummed = FALSE;\r | |
108 | UINTN Index;\r | |
109 | \r | |
110 | if (!Checksummed) {\r | |
ea0d111e LE |
111 | for (Index = 0;\r |
112 | Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB_MEDIA_INFO);\r | |
113 | Index += 1) {\r | |
a4ce9ffd JJ |
114 | UINT16 Checksum;\r |
115 | mPlatformFvbMediaInfo[Index].FvbInfo.Checksum = 0;\r | |
116 | Checksum = CalculateCheckSum16 (\r | |
117 | (UINT16*) &mPlatformFvbMediaInfo[Index].FvbInfo,\r | |
118 | mPlatformFvbMediaInfo[Index].FvbInfo.HeaderLength\r | |
119 | );\r | |
120 | mPlatformFvbMediaInfo[Index].FvbInfo.Checksum = Checksum;\r | |
121 | }\r | |
122 | Checksummed = TRUE;\r | |
123 | }\r | |
124 | \r | |
ea0d111e LE |
125 | for (Index = 0;\r |
126 | Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB_MEDIA_INFO);\r | |
127 | Index += 1) {\r | |
a4ce9ffd JJ |
128 | if (mPlatformFvbMediaInfo[Index].FvLength == FvLength) {\r |
129 | *FvbInfo = &mPlatformFvbMediaInfo[Index].FvbInfo;\r | |
130 | return EFI_SUCCESS;\r | |
131 | }\r | |
132 | }\r | |
133 | \r | |
134 | return EFI_NOT_FOUND;\r | |
135 | }\r |