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 *
UncachedInternalAllocatePool (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN AllocationSize
)
{
UINTN CacheLineLength = ArmDataCacheLineLength ();
return UncachedInternalAllocateAlignedPool (MemoryType, AllocationSize, CacheLineLength);
}
EFI_STATUS
EFIAPI
ArmDmaLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
// Get the Cpu protocol for later use
Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&gCpu);
ASSERT_EFI_ERROR(Status);
gCacheAlignment = ArmDataCacheLineLength ();
return Status;
}
VOID
EFIAPI
ArmCacheInformation (
OUT ARM_CACHE_INFO *CacheInfo
)
{
if (CacheInfo != NULL) {
CacheInfo->Type = ArmCacheType();
CacheInfo->Architecture = ArmCacheArchitecture();
CacheInfo->DataCachePresent = ArmDataCachePresent();
CacheInfo->DataCacheSize = ArmDataCacheSize();
CacheInfo->DataCacheAssociativity = ArmDataCacheAssociativity();
CacheInfo->DataCacheLineLength = ArmDataCacheLineLength();
CacheInfo->InstructionCachePresent = ArmInstructionCachePresent();
CacheInfo->InstructionCacheSize = ArmInstructionCacheSize();
CacheInfo->InstructionCacheAssociativity = ArmInstructionCacheAssociativity();
CacheInfo->InstructionCacheLineLength = ArmInstructionCacheLineLength();
}
}
VOID
CacheRangeOperation (
IN VOID *Start,
IN UINTN Length,
IN LINE_OPERATION LineOperation
)
{
UINTN ArmCacheLineLength = ArmDataCacheLineLength();
UINTN ArmCacheLineAlignmentMask = ArmCacheLineLength - 1;
// 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;
}
ArmDataSynchronizationBarrier ();
}
