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8fc38a3f | 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 <PiDxe.h> | |
16 | #include <Library/ArmPlatformGlobalVariableLib.h> | |
17 | #include <Library/BaseMemoryLib.h> | |
18 | #include <Library/DebugLib.h> | |
19 | #include <Library/HobLib.h> | |
20 | #include <Library/PcdLib.h> | |
21 | ||
22 | #include <Guid/ArmGlobalVariableHob.h> | |
23 | ||
24 | UINTN mGlobalVariableBase = 0; | |
25 | ||
26 | RETURN_STATUS | |
27 | EFIAPI | |
28 | ArmPlatformGlobalVariableConstructor ( | |
29 | VOID | |
30 | ) | |
31 | { | |
32 | ARM_HOB_GLOBAL_VARIABLE *Hob; | |
33 | ||
34 | Hob = GetFirstGuidHob (&gArmGlobalVariableGuid); | |
35 | ASSERT (Hob != NULL); | |
36 | ||
37 | mGlobalVariableBase = Hob->GlobalVariableBase; | |
38 | ||
39 | return EFI_SUCCESS; | |
40 | } | |
41 | ||
42 | VOID | |
43 | ArmPlatformGetGlobalVariable ( | |
44 | IN UINTN VariableOffset, | |
45 | IN UINTN VariableSize, | |
46 | OUT VOID* Variable | |
47 | ) | |
48 | { | |
49 | if (mGlobalVariableBase == 0) { | |
50 | ArmPlatformGlobalVariableConstructor (); | |
51 | } | |
52 | ||
53 | CopyMem (Variable, (VOID*)(mGlobalVariableBase + VariableOffset), VariableSize); | |
54 | } | |
55 | ||
56 | VOID | |
57 | ArmPlatformSetGlobalVariable ( | |
58 | IN UINTN VariableOffset, | |
59 | IN UINTN VariableSize, | |
60 | OUT VOID* Variable | |
61 | ) | |
62 | { | |
63 | if (mGlobalVariableBase == 0) { | |
64 | ArmPlatformGlobalVariableConstructor (); | |
65 | } | |
66 | ||
67 | CopyMem ((VOID*)(mGlobalVariableBase + VariableOffset), Variable, VariableSize); | |
68 | } | |
69 |