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/** @file
*
* Copyright (c) 2011-2012, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
* which accompanies this distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/
#include <Uefi.h>
#include <Library/ArmPlatformGlobalVariableLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
VOID
ArmPlatformGetGlobalVariable (
IN UINTN VariableOffset,
IN UINTN VariableSize,
OUT VOID* Variable
)
{
UINTN GlobalVariableBase;
// Ensure the Global Variable Size have been initialized
ASSERT (VariableOffset < PcdGet32 (PcdSecGlobalVariableSize));
GlobalVariableBase = PcdGet32 (PcdCPUCoresSecStackBase) + PcdGet32 (PcdCPUCoreSecPrimaryStackSize) - PcdGet32 (PcdSecGlobalVariableSize);
if (VariableSize == 4) {
*(UINT32*)Variable = ReadUnaligned32 ((CONST UINT32*)(GlobalVariableBase + VariableOffset));
} else if (VariableSize == 8) {
*(UINT64*)Variable = ReadUnaligned64 ((CONST UINT64*)(GlobalVariableBase + VariableOffset));
} else {
CopyMem (Variable, (VOID*)(GlobalVariableBase + VariableOffset), VariableSize);
}
}
VOID
ArmPlatformSetGlobalVariable (
IN UINTN VariableOffset,
IN UINTN VariableSize,
OUT VOID* Variable
)
{
UINTN GlobalVariableBase;
// Ensure the Global Variable Size have been initialized
ASSERT (VariableOffset < PcdGet32 (PcdSecGlobalVariableSize));
GlobalVariableBase = PcdGet32 (PcdCPUCoresSecStackBase) + PcdGet32 (PcdCPUCoreSecPrimaryStackSize) - PcdGet32 (PcdSecGlobalVariableSize);
if (VariableSize == 4) {
WriteUnaligned32 ((UINT32*)(GlobalVariableBase + VariableOffset), *(UINT32*)Variable);
} else if (VariableSize == 8) {
WriteUnaligned64 ((UINT64*)(GlobalVariableBase + VariableOffset), *(UINT64*)Variable);
} else {
CopyMem ((VOID*)(GlobalVariableBase + VariableOffset), Variable, VariableSize);
}
}
VOID*
ArmPlatformGetGlobalVariableAddress (
IN UINTN VariableOffset
)
{
UINTN GlobalVariableBase;
// Ensure the Global Variable Size have been initialized
ASSERT (VariableOffset < PcdGet32 (PcdSecGlobalVariableSize));
GlobalVariableBase = PcdGet32 (PcdCPUCoresSecStackBase) + PcdGet32 (PcdCPUCoreSecPrimaryStackSize) - PcdGet32 (PcdSecGlobalVariableSize);
return (VOID*)(GlobalVariableBase + VariableOffset);
}
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