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1e57a462 | 1 | /** @file\r |
2 | *\r | |
c75d3eb6 | 3 | * Copyright (c) 2011-2015, ARM Limited. All rights reserved.\r |
1e57a462 | 4 | *\r |
c0b2e477 | 5 | * 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 | |
1e57a462 | 12 | *\r |
13 | **/\r | |
14 | \r | |
15 | #include "BdsInternal.h"\r | |
16 | \r | |
1e57a462 | 17 | EFI_STATUS\r |
18 | ShutdownUefiBootServices (\r | |
19 | VOID\r | |
20 | )\r | |
21 | {\r | |
22 | EFI_STATUS Status;\r | |
23 | UINTN MemoryMapSize;\r | |
24 | EFI_MEMORY_DESCRIPTOR *MemoryMap;\r | |
25 | UINTN MapKey;\r | |
26 | UINTN DescriptorSize;\r | |
27 | UINT32 DescriptorVersion;\r | |
28 | UINTN Pages;\r | |
29 | \r | |
30 | MemoryMap = NULL;\r | |
31 | MemoryMapSize = 0;\r | |
32 | Pages = 0;\r | |
33 | \r | |
34 | do {\r | |
35 | Status = gBS->GetMemoryMap (\r | |
36 | &MemoryMapSize,\r | |
37 | MemoryMap,\r | |
38 | &MapKey,\r | |
39 | &DescriptorSize,\r | |
40 | &DescriptorVersion\r | |
41 | );\r | |
42 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
43 | \r | |
44 | Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;\r | |
45 | MemoryMap = AllocatePages (Pages);\r | |
46 | \r | |
47 | //\r | |
48 | // Get System MemoryMap\r | |
49 | //\r | |
50 | Status = gBS->GetMemoryMap (\r | |
51 | &MemoryMapSize,\r | |
52 | MemoryMap,\r | |
53 | &MapKey,\r | |
54 | &DescriptorSize,\r | |
55 | &DescriptorVersion\r | |
56 | );\r | |
57 | }\r | |
58 | \r | |
59 | // Don't do anything between the GetMemoryMap() and ExitBootServices()\r | |
60 | if (!EFI_ERROR(Status)) {\r | |
61 | Status = gBS->ExitBootServices (gImageHandle, MapKey);\r | |
62 | if (EFI_ERROR(Status)) {\r | |
63 | FreePages (MemoryMap, Pages);\r | |
64 | MemoryMap = NULL;\r | |
65 | MemoryMapSize = 0;\r | |
66 | }\r | |
67 | }\r | |
68 | } while (EFI_ERROR(Status));\r | |
69 | \r | |
70 | return Status;\r | |
71 | }\r | |
72 | \r | |
73 | /**\r | |
74 | Connect all DXE drivers\r | |
75 | \r | |
76 | @retval EFI_SUCCESS All drivers have been connected\r | |
77 | @retval EFI_NOT_FOUND No handles match the search.\r | |
78 | @retval EFI_OUT_OF_RESOURCES There is not resource pool memory to store the matching results.\r | |
79 | \r | |
80 | **/\r | |
81 | EFI_STATUS\r | |
82 | BdsConnectAllDrivers (\r | |
83 | VOID\r | |
84 | )\r | |
85 | {\r | |
86 | UINTN HandleCount, Index;\r | |
87 | EFI_HANDLE *HandleBuffer;\r | |
88 | EFI_STATUS Status;\r | |
89 | \r | |
90 | do {\r | |
91 | // Locate all the driver handles\r | |
92 | Status = gBS->LocateHandleBuffer (\r | |
93 | AllHandles,\r | |
94 | NULL,\r | |
95 | NULL,\r | |
96 | &HandleCount,\r | |
97 | &HandleBuffer\r | |
98 | );\r | |
99 | if (EFI_ERROR (Status)) {\r | |
100 | break;\r | |
101 | }\r | |
102 | \r | |
103 | // Connect every handles\r | |
104 | for (Index = 0; Index < HandleCount; Index++) {\r | |
105 | gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);\r | |
106 | }\r | |
107 | \r | |
108 | if (HandleBuffer != NULL) {\r | |
109 | FreePool (HandleBuffer);\r | |
110 | }\r | |
111 | \r | |
112 | // Check if new handles have been created after the start of the previous handles\r | |
113 | Status = gDS->Dispatch ();\r | |
114 | } while (!EFI_ERROR(Status));\r | |
115 | \r | |
116 | return EFI_SUCCESS;\r | |
117 | }\r | |
118 | \r | |
c0b2e477 | 119 | EFI_STATUS\r |
120 | GetGlobalEnvironmentVariable (\r | |
121 | IN CONST CHAR16* VariableName,\r | |
122 | IN VOID* DefaultValue,\r | |
123 | IN OUT UINTN* Size,\r | |
124 | OUT VOID** Value\r | |
125 | )\r | |
126 | {\r | |
127 | return GetEnvironmentVariable (VariableName, &gEfiGlobalVariableGuid,\r | |
128 | DefaultValue, Size, Value);\r | |
129 | }\r | |
130 | \r | |
1e57a462 | 131 | EFI_STATUS\r |
132 | GetEnvironmentVariable (\r | |
133 | IN CONST CHAR16* VariableName,\r | |
c0b2e477 | 134 | IN EFI_GUID* VendorGuid,\r |
1e57a462 | 135 | IN VOID* DefaultValue,\r |
136 | IN OUT UINTN* Size,\r | |
137 | OUT VOID** Value\r | |
138 | )\r | |
139 | {\r | |
140 | EFI_STATUS Status;\r | |
141 | UINTN VariableSize;\r | |
142 | \r | |
143 | // Try to get the variable size.\r | |
144 | *Value = NULL;\r | |
145 | VariableSize = 0;\r | |
c0b2e477 | 146 | Status = gRT->GetVariable ((CHAR16 *) VariableName, VendorGuid, NULL, &VariableSize, *Value);\r |
1e57a462 | 147 | if (Status == EFI_NOT_FOUND) {\r |
148 | if ((DefaultValue != NULL) && (Size != NULL) && (*Size != 0)) {\r | |
149 | // If the environment variable does not exist yet then set it with the default value\r | |
150 | Status = gRT->SetVariable (\r | |
151 | (CHAR16*)VariableName,\r | |
c0b2e477 | 152 | VendorGuid,\r |
1e57a462 | 153 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r |
154 | *Size,\r | |
155 | DefaultValue\r | |
156 | );\r | |
d8dc9f0a | 157 | *Value = AllocateCopyPool (*Size, DefaultValue);\r |
1e57a462 | 158 | } else {\r |
159 | return EFI_NOT_FOUND;\r | |
160 | }\r | |
161 | } else if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
162 | // Get the environment variable value\r | |
163 | *Value = AllocatePool (VariableSize);\r | |
164 | if (*Value == NULL) {\r | |
165 | return EFI_OUT_OF_RESOURCES;\r | |
166 | }\r | |
167 | \r | |
c0b2e477 | 168 | Status = gRT->GetVariable ((CHAR16 *)VariableName, VendorGuid, NULL, &VariableSize, *Value);\r |
1e57a462 | 169 | if (EFI_ERROR (Status)) {\r |
170 | FreePool(*Value);\r | |
171 | return EFI_INVALID_PARAMETER;\r | |
172 | }\r | |
173 | \r | |
174 | if (Size) {\r | |
175 | *Size = VariableSize;\r | |
176 | }\r | |
177 | } else {\r | |
d8dc9f0a | 178 | *Value = AllocateCopyPool (*Size, DefaultValue);\r |
1e57a462 | 179 | return Status;\r |
180 | }\r | |
181 | \r | |
182 | return EFI_SUCCESS;\r | |
183 | }\r |