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8dbae30d | 1 | /** @file\r |
2 | Common Library Routines to assist handle HII elements.\r | |
3 | \r | |
4 | Copyright (c) 2007 - 2008, Intel Corporation. <BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
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 | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "LibraryInternal.h"\r | |
16 | \r | |
17 | \r | |
18 | //\r | |
19 | // Hii relative protocols\r | |
20 | //\r | |
21 | \r | |
22 | EFI_HII_DATABASE_PROTOCOL *gIfrLibHiiDatabase;\r | |
23 | EFI_HII_STRING_PROTOCOL *gIfrLibHiiString;\r | |
24 | \r | |
6ca46b63 | 25 | /**\r |
26 | ExtendedIfrSupportLib's constructor. It locates the required protocol:\r | |
27 | gEfiHiiDatabaseProtocolGuid and gEfiHiiStringProtocolGuid.\r | |
28 | \r | |
29 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
30 | \r | |
31 | @param SystemTable A pointer to the EFI System Table.\r | |
32 | \r | |
33 | @retval EFI_SUCCESS This function always completes successfully.\r | |
34 | \r | |
35 | **/\r | |
8dbae30d | 36 | EFI_STATUS\r |
37 | EFIAPI\r | |
38 | ExtendedIfrSupportLibConstructor (\r | |
39 | IN EFI_HANDLE ImageHandle,\r | |
40 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
41 | )\r | |
42 | {\r | |
43 | EFI_STATUS Status;\r | |
44 | \r | |
45 | Status = gBS->LocateProtocol (&gEfiHiiDatabaseProtocolGuid, NULL, (VOID **) &gIfrLibHiiDatabase);\r | |
46 | ASSERT_EFI_ERROR (Status);\r | |
47 | \r | |
48 | Status = gBS->LocateProtocol (&gEfiHiiStringProtocolGuid, NULL, (VOID **) &gIfrLibHiiString);\r | |
49 | ASSERT_EFI_ERROR (Status);\r | |
50 | \r | |
51 | return EFI_SUCCESS;\r | |
52 | }\r | |
53 | \r | |
54 | \r | |
55 | \r | |
cfb9b643 | 56 | GLOBAL_REMOVE_IF_UNREFERENCED EFI_GUID mIfrVendorGuid = EFI_IFR_TIANO_GUID;\r |
8dbae30d | 57 | \r |
6ca46b63 | 58 | /**\r |
59 | Extract formset class for given HII handle.\r | |
60 | \r | |
61 | \r | |
62 | @param Handle The HII handle.\r | |
63 | @param Class Class of the formset.\r | |
64 | @param FormSetTitle Formset title string.\r | |
65 | @param FormSetHelp Formset help string.\r | |
66 | \r | |
67 | @retval EFI_SUCCESS Successfully extract Class for specified Hii handle.\r | |
68 | @return Other values if failed to export packages for the given HII handle.\r | |
69 | \r | |
70 | **/\r | |
8dbae30d | 71 | EFI_STATUS\r |
72 | EFIAPI\r | |
73 | IfrLibExtractClassFromHiiHandle (\r | |
74 | IN EFI_HII_HANDLE Handle,\r | |
75 | OUT UINT16 *Class,\r | |
76 | OUT EFI_STRING_ID *FormSetTitle,\r | |
77 | OUT EFI_STRING_ID *FormSetHelp\r | |
78 | )\r | |
8dbae30d | 79 | {\r |
80 | EFI_STATUS Status;\r | |
81 | UINTN BufferSize;\r | |
82 | EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;\r | |
83 | UINT8 *Package;\r | |
84 | UINT8 *OpCodeData;\r | |
85 | UINT32 Offset;\r | |
86 | UINT32 Offset2;\r | |
87 | UINT32 PackageListLength;\r | |
88 | EFI_HII_PACKAGE_HEADER PackageHeader;\r | |
89 | \r | |
90 | ASSERT (Handle != NULL);\r | |
91 | ASSERT (Class != NULL); \r | |
92 | ASSERT (FormSetTitle != NULL);\r | |
93 | ASSERT (FormSetHelp != NULL);\r | |
94 | \r | |
95 | *Class = EFI_NON_DEVICE_CLASS;\r | |
96 | *FormSetTitle = 0;\r | |
97 | *FormSetHelp = 0;\r | |
98 | \r | |
99 | //\r | |
100 | // Get HII PackageList\r | |
101 | //\r | |
102 | BufferSize = 0;\r | |
103 | HiiPackageList = NULL;\r | |
104 | Status = gIfrLibHiiDatabase->ExportPackageLists (gIfrLibHiiDatabase, Handle, &BufferSize, HiiPackageList);\r | |
105 | ASSERT (Status != EFI_NOT_FOUND);\r | |
106 | \r | |
107 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
108 | HiiPackageList = AllocatePool (BufferSize);\r | |
109 | ASSERT (HiiPackageList != NULL);\r | |
110 | \r | |
111 | Status = gIfrLibHiiDatabase->ExportPackageLists (gIfrLibHiiDatabase, Handle, &BufferSize, HiiPackageList);\r | |
112 | }\r | |
113 | if (EFI_ERROR (Status)) {\r | |
114 | return Status;\r | |
115 | }\r | |
116 | \r | |
117 | //\r | |
118 | // Get Form package from this HII package List\r | |
119 | //\r | |
120 | Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);\r | |
121 | Offset2 = 0;\r | |
122 | CopyMem (&PackageListLength, &HiiPackageList->PackageLength, sizeof (UINT32));\r | |
123 | \r | |
124 | while (Offset < PackageListLength) {\r | |
125 | Package = ((UINT8 *) HiiPackageList) + Offset;\r | |
126 | CopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
127 | \r | |
128 | if (PackageHeader.Type == EFI_HII_PACKAGE_FORM) {\r | |
129 | //\r | |
130 | // Search Class Opcode in this Form Package\r | |
131 | //\r | |
132 | Offset2 = sizeof (EFI_HII_PACKAGE_HEADER);\r | |
133 | while (Offset2 < PackageHeader.Length) {\r | |
134 | OpCodeData = Package + Offset2;\r | |
135 | \r | |
136 | if (((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode == EFI_IFR_FORM_SET_OP) {\r | |
137 | //\r | |
138 | // Find FormSet OpCode\r | |
139 | //\r | |
140 | CopyMem (FormSetTitle, &((EFI_IFR_FORM_SET *) OpCodeData)->FormSetTitle, sizeof (EFI_STRING_ID));\r | |
141 | CopyMem (FormSetHelp, &((EFI_IFR_FORM_SET *) OpCodeData)->Help, sizeof (EFI_STRING_ID));\r | |
142 | }\r | |
143 | \r | |
144 | if ((((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode == EFI_IFR_GUID_OP) &&\r | |
145 | CompareGuid (&mIfrVendorGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER))) &&\r | |
146 | (((EFI_IFR_GUID_CLASS *) OpCodeData)->ExtendOpCode == EFI_IFR_EXTEND_OP_CLASS)\r | |
147 | ) {\r | |
148 | //\r | |
149 | // Find GUIDed Class OpCode\r | |
150 | //\r | |
151 | CopyMem (Class, &((EFI_IFR_GUID_CLASS *) OpCodeData)->Class, sizeof (UINT16));\r | |
152 | \r | |
153 | //\r | |
154 | // Till now, we ought to have found the formset Opcode\r | |
155 | //\r | |
156 | break;\r | |
157 | }\r | |
158 | \r | |
159 | Offset2 += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;\r | |
160 | }\r | |
161 | \r | |
162 | if (Offset2 < PackageHeader.Length) {\r | |
163 | //\r | |
164 | // Target formset found\r | |
165 | //\r | |
166 | break;\r | |
167 | }\r | |
168 | }\r | |
169 | \r | |
170 | Offset += PackageHeader.Length;\r | |
171 | }\r | |
172 | \r | |
cfb9b643 | 173 | FreePool (HiiPackageList);\r |
8dbae30d | 174 | \r |
175 | return EFI_SUCCESS;\r | |
176 | }\r | |
177 | \r | |
178 | \r |