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1bfda055 | 1 | /** @file |
2 | * | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved. | |
4 | * | |
5 | * This program and the accompanying materials | |
6 | * are licensed and made available under the terms and conditions of the BSD License | |
7 | * which accompanies this distribution. The full text of the license may be found at | |
8 | * http://opensource.org/licenses/bsd-license.php | |
9 | * | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | * | |
13 | **/ | |
14 | ||
15 | #include "BdsInternal.h" | |
16 | ||
17 | EFI_STATUS BdsLoadFileFromFirmwareVolume( | |
18 | IN EFI_HANDLE FvHandle, | |
19 | IN CHAR16 *FilePath, | |
20 | IN EFI_FV_FILETYPE FileTypeFilter, | |
21 | OUT BDS_FILE *File | |
22 | ) { | |
23 | EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol; | |
24 | VOID *Key; | |
25 | EFI_STATUS Status, FileStatus; | |
26 | EFI_GUID NameGuid; | |
27 | EFI_FV_FILETYPE FileType; | |
28 | EFI_FV_FILE_ATTRIBUTES Attributes; | |
29 | UINTN Size; | |
30 | UINTN UiStringLen; | |
31 | CHAR16 *UiSection; | |
32 | UINT32 Authentication; | |
33 | ||
34 | if (File == NULL) { | |
35 | return EFI_INVALID_PARAMETER; | |
36 | } | |
37 | ||
38 | Status = gBS->HandleProtocol(FvHandle,&gEfiFirmwareVolume2ProtocolGuid, (VOID **)&FvProtocol); | |
39 | if (EFI_ERROR(Status)) { | |
40 | return Status; | |
41 | } | |
42 | ||
43 | // Length of FilePath | |
44 | UiStringLen = StrLen (FilePath); | |
45 | ||
46 | // Allocate Key | |
47 | Key = AllocatePool (FvProtocol->KeySize); | |
48 | ASSERT (Key != NULL); | |
49 | ZeroMem (Key, FvProtocol->KeySize); | |
50 | ||
51 | do { | |
52 | // Search in all files | |
53 | FileType = FileTypeFilter; | |
54 | ||
55 | Status = FvProtocol->GetNextFile (FvProtocol, Key, &FileType, &NameGuid, &Attributes, &Size); | |
56 | if (!EFI_ERROR (Status)) { | |
57 | UiSection = NULL; | |
58 | FileStatus = FvProtocol->ReadSection ( | |
59 | FvProtocol, | |
60 | &NameGuid, | |
61 | EFI_SECTION_USER_INTERFACE, | |
62 | 0, | |
63 | (VOID **)&UiSection, | |
64 | &Size, | |
65 | &Authentication | |
66 | ); | |
67 | if (!EFI_ERROR (FileStatus)) { | |
68 | if (StrnCmp (FilePath, UiSection, UiStringLen) == 0) { | |
69 | ||
70 | // | |
71 | // We found a UiString match. | |
72 | // | |
73 | //*FileGuid = NameGuid; | |
74 | File->Type = BDS_FILETYPE_FV; | |
75 | File->FilePath = FilePath; | |
76 | CopyGuid (&(File->File.Fv.Guid),&NameGuid); | |
77 | File->File.Fv.FvProtocol = FvProtocol; | |
78 | File->File.Fv.FileType = FileType; | |
79 | ||
80 | Status = gBS->HandleProtocol(FvHandle,&gEfiDevicePathProtocolGuid, (VOID **)&(File->DevicePath)); | |
81 | ||
82 | FreePool (Key); | |
83 | FreePool (UiSection); | |
84 | return FileStatus; | |
85 | } | |
86 | FreePool (UiSection); | |
87 | } | |
88 | } | |
89 | } while (!EFI_ERROR (Status)); | |
90 | ||
91 | FreePool(Key); | |
92 | return Status; | |
93 | } | |
94 | ||
95 | EFI_STATUS BdsCopyRawFileToRuntimeMemoryFV( | |
96 | IN BDS_FV_FILE *FvFile, | |
97 | OUT VOID **FileImage, | |
98 | OUT UINTN *FileSize | |
99 | ) { | |
100 | EFI_STATUS Status = EFI_INVALID_PARAMETER; | |
101 | EFI_FIRMWARE_VOLUME2_PROTOCOL *FvProtocol; | |
102 | EFI_FV_FILETYPE FileType; | |
103 | EFI_GUID* NameGuid; | |
104 | EFI_FV_FILE_ATTRIBUTES Attributes; | |
105 | UINT32 Authentication; | |
106 | ||
107 | FvProtocol = FvFile->FvProtocol; | |
108 | FileType = FvFile->FileType; | |
109 | NameGuid = &(FvFile->Guid); | |
110 | ||
111 | if (FileType == EFI_FV_FILETYPE_RAW) { | |
112 | *FileImage = NULL; | |
113 | *FileSize = 0; | |
114 | Status = FvProtocol->ReadFile( | |
115 | FvProtocol,NameGuid, // IN | |
116 | FileImage,FileSize, // IN OUT | |
117 | &FileType,&Attributes,&Authentication // OUT | |
118 | ); | |
119 | ASSERT_EFI_ERROR(Status); | |
120 | ||
121 | // This raw file also contains a header | |
122 | *FileSize = *FileSize - 4; | |
123 | *FileImage = (UINT8*)FileImage + 4; | |
124 | } else if (FileType == EFI_FV_FILETYPE_FREEFORM) { | |
125 | Status = FvProtocol->ReadSection ( | |
126 | FvProtocol,NameGuid,EFI_SECTION_RAW,0, // IN | |
127 | FileImage,FileSize, // IN OUT | |
128 | &Authentication // OUT | |
129 | ); | |
130 | ASSERT_EFI_ERROR(Status); | |
131 | } else { | |
132 | ASSERT(0); //Maybe support application as well ??? | |
133 | } | |
134 | ||
135 | return Status; | |
136 | } |