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/** @file
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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 <Base.h>
#include <Library/ArmLib.h>
#include <Library/PcdLib.h>
VOID
CacheRangeOperation (
IN VOID *Start,
IN UINTN Length,
IN CACHE_OPERATION CacheOperation,
IN LINE_OPERATION LineOperation
)
{
UINTN ArmCacheLineLength = ArmDataCacheLineLength();
UINTN ArmCacheLineAlignmentMask = ArmCacheLineLength - 1;
UINTN ArmCacheOperationThreshold = PcdGet32(PcdArmCacheOperationThreshold);
if ((CacheOperation != NULL) && (Length >= ArmCacheOperationThreshold)) {
CacheOperation ();
} else {
// Align address (rounding down)
UINTN AlignedAddress = (UINTN)Start - ((UINTN)Start & ArmCacheLineAlignmentMask);
UINTN EndAddress = (UINTN)Start + Length;
// Perform the line operation on an address in each cache line
while (AlignedAddress < EndAddress) {
LineOperation(AlignedAddress);
AlignedAddress += ArmCacheLineLength;
}
}
}
VOID
EFIAPI
InvalidateInstructionCache (
VOID
)
{
ArmCleanDataCache();
ArmInvalidateInstructionCache();
}
VOID
EFIAPI
InvalidateDataCache (
VOID
)
{
ArmInvalidateDataCache();
}
VOID *
EFIAPI
InvalidateInstructionCacheRange (
IN VOID *Address,
IN UINTN Length
)
{
CacheRangeOperation (Address, Length, ArmCleanDataCacheToPoU, ArmCleanDataCacheEntryByMVA);
ArmInvalidateInstructionCache ();
return Address;
}
VOID
EFIAPI
WriteBackInvalidateDataCache (
VOID
)
{
ArmCleanInvalidateDataCache();
}
VOID *
EFIAPI
WriteBackInvalidateDataCacheRange (
IN VOID *Address,
IN UINTN Length
)
{
CacheRangeOperation(Address, Length, ArmCleanInvalidateDataCache, ArmCleanInvalidateDataCacheEntryByMVA);
return Address;
}
VOID
EFIAPI
WriteBackDataCache (
VOID
)
{
ArmCleanDataCache();
}
VOID *
EFIAPI
WriteBackDataCacheRange (
IN VOID *Address,
IN UINTN Length
)
{
CacheRangeOperation(Address, Length, ArmCleanDataCache, ArmCleanDataCacheEntryByMVA);
return Address;
}
VOID *
EFIAPI
InvalidateDataCacheRange (
IN VOID *Address,
IN UINTN Length
)
{
CacheRangeOperation(Address, Length, NULL, ArmInvalidateDataCacheEntryByMVA);
return Address;
}
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