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8fc38a3f | 1 | /** @file |
2 | * | |
782d45d1 | 3 | * Copyright (c) 2011-2012, ARM Limited. All rights reserved. |
8fc38a3f | 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 <Uefi.h> | |
16 | #include <Library/ArmPlatformGlobalVariableLib.h> | |
17 | #include <Library/BaseLib.h> | |
18 | #include <Library/BaseMemoryLib.h> | |
19 | #include <Library/PcdLib.h> | |
782d45d1 | 20 | #include <Library/DebugLib.h> |
8fc38a3f | 21 | |
22 | // Declared by ArmPlatformPkg/PrePi Module | |
23 | extern UINTN mGlobalVariableBase; | |
24 | ||
25 | VOID | |
26 | ArmPlatformGetGlobalVariable ( | |
27 | IN UINTN VariableOffset, | |
28 | IN UINTN VariableSize, | |
29 | OUT VOID* Variable | |
30 | ) | |
31 | { | |
32 | UINTN GlobalVariableBase; | |
33 | ||
782d45d1 | 34 | // Ensure the Global Variable Size have been initialized |
35 | ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize)); | |
36 | ||
f463bb00 | 37 | GlobalVariableBase = PcdGet32 (PcdCPUCoresStackBase) + PcdGet32 (PcdCPUCorePrimaryStackSize) - PcdGet32 (PcdPeiGlobalVariableSize); |
8fc38a3f | 38 | |
39 | if (VariableSize == 4) { | |
40 | *(UINT32*)Variable = ReadUnaligned32 ((CONST UINT32*)(GlobalVariableBase + VariableOffset)); | |
41 | } else if (VariableSize == 8) { | |
f15f91a2 | 42 | *(UINT64*)Variable = ReadUnaligned64 ((CONST UINT64*)(GlobalVariableBase + VariableOffset)); |
8fc38a3f | 43 | } else { |
44 | CopyMem (Variable, (VOID*)(GlobalVariableBase + VariableOffset), VariableSize); | |
45 | } | |
8fc38a3f | 46 | } |
47 | ||
48 | VOID | |
49 | ArmPlatformSetGlobalVariable ( | |
50 | IN UINTN VariableOffset, | |
51 | IN UINTN VariableSize, | |
52 | OUT VOID* Variable | |
53 | ) | |
54 | { | |
55 | UINTN GlobalVariableBase; | |
56 | ||
782d45d1 | 57 | // Ensure the Global Variable Size have been initialized |
58 | ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize)); | |
59 | ||
f463bb00 | 60 | GlobalVariableBase = PcdGet32 (PcdCPUCoresStackBase) + PcdGet32 (PcdCPUCorePrimaryStackSize) - PcdGet32 (PcdPeiGlobalVariableSize); |
8fc38a3f | 61 | |
62 | if (VariableSize == 4) { | |
63 | WriteUnaligned32 ((UINT32*)(GlobalVariableBase + VariableOffset), *(UINT32*)Variable); | |
64 | } else if (VariableSize == 8) { | |
65 | WriteUnaligned64 ((UINT64*)(GlobalVariableBase + VariableOffset), *(UINT64*)Variable); | |
66 | } else { | |
67 | CopyMem ((VOID*)(GlobalVariableBase + VariableOffset), Variable, VariableSize); | |
68 | } | |
8fc38a3f | 69 | } |
70 | ||
d9efd68e | 71 | VOID* |
72 | ArmPlatformGetGlobalVariableAddress ( | |
73 | IN UINTN VariableOffset | |
74 | ) | |
75 | { | |
76 | UINTN GlobalVariableBase; | |
77 | ||
78 | // Ensure the Global Variable Size have been initialized | |
79 | ASSERT (VariableOffset < PcdGet32 (PcdPeiGlobalVariableSize)); | |
80 | ||
81 | GlobalVariableBase = PcdGet32 (PcdCPUCoresStackBase) + PcdGet32 (PcdCPUCorePrimaryStackSize) - PcdGet32 (PcdPeiGlobalVariableSize); | |
82 | ||
83 | return (VOID*)(GlobalVariableBase + VariableOffset); | |
84 | } |