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1 | /** @file\r |
2 | *\r |
3 | * Copyright (c) 2011-2012, ARM Limited. All rights reserved.\r |
4 | *\r |
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 |
12 | *\r |
13 | **/\r |
14 | \r |
15 | #include <PiDxe.h>\r |
16 | #include <Library/ArmPlatformGlobalVariableLib.h>\r |
17 | #include <Library/BaseMemoryLib.h>\r |
18 | #include <Library/DebugLib.h>\r |
19 | #include <Library/HobLib.h>\r |
20 | #include <Library/PcdLib.h>\r |
21 | \r |
22 | #include <Guid/ArmGlobalVariableHob.h>\r |
23 | \r |
24 | UINTN mGlobalVariableBase = 0;\r |
25 | \r |
26 | RETURN_STATUS\r |
27 | EFIAPI\r |
28 | ArmPlatformGlobalVariableConstructor (\r |
29 | VOID\r |
30 | )\r |
31 | {\r |
32 | ARM_HOB_GLOBAL_VARIABLE *Hob;\r |
33 | \r |
34 | Hob = GetFirstGuidHob (&gArmGlobalVariableGuid);\r |
35 | ASSERT (Hob != NULL);\r |
36 | \r |
37 | mGlobalVariableBase = Hob->GlobalVariableBase;\r |
38 | \r |
39 | return EFI_SUCCESS;\r |
40 | }\r |
41 | \r |
42 | VOID\r |
43 | ArmPlatformGetGlobalVariable (\r |
44 | IN UINTN VariableOffset,\r |
45 | IN UINTN VariableSize,\r |
46 | OUT VOID* Variable\r |
47 | )\r |
48 | {\r |
49 | if (mGlobalVariableBase == 0) {\r |
50 | ArmPlatformGlobalVariableConstructor ();\r |
51 | }\r |
52 | \r |
53 | CopyMem (Variable, (VOID*)(mGlobalVariableBase + VariableOffset), VariableSize);\r |
54 | }\r |
55 | \r |
56 | VOID\r |
57 | ArmPlatformSetGlobalVariable (\r |
58 | IN UINTN VariableOffset,\r |
59 | IN UINTN VariableSize,\r |
60 | OUT VOID* Variable\r |
61 | )\r |
62 | {\r |
63 | if (mGlobalVariableBase == 0) {\r |
64 | ArmPlatformGlobalVariableConstructor ();\r |
65 | }\r |
66 | \r |
67 | CopyMem ((VOID*)(mGlobalVariableBase + VariableOffset), Variable, VariableSize);\r |
68 | }\r |
69 | \r |
70 | VOID*\r |
71 | ArmPlatformGetGlobalVariableAddress (\r |
72 | IN UINTN VariableOffset\r |
73 | )\r |
74 | {\r |
75 | return (VOID*)(mGlobalVariableBase + VariableOffset);\r |
76 | }\r |