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/** @file
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
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 "CpuDxe.h"
EFI_STATUS
EFIAPI
CpuFlushCpuDataCache (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS Start,
IN UINT64 Length,
IN EFI_CPU_FLUSH_TYPE FlushType
)
{
switch (FlushType) {
case EfiCpuFlushTypeWriteBack:
WriteBackDataCacheRange((VOID *)(UINTN)Start, (UINTN)Length);
break;
case EfiCpuFlushTypeInvalidate:
InvalidateDataCacheRange((VOID *)(UINTN)Start, (UINTN)Length);
break;
case EfiCpuFlushTypeWriteBackInvalidate:
WriteBackInvalidateDataCacheRange((VOID *)(UINTN)Start, (UINTN)Length);
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuEnableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
)
{
if (ArmProcessorMode() != ARM_PROCESSOR_MODE_IRQ) {
ArmEnableInterrupts();
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuDisableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
)
{
if (ArmProcessorMode() != ARM_PROCESSOR_MODE_IRQ) {
ArmDisableInterrupts();
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuGetInterruptState (
IN EFI_CPU_ARCH_PROTOCOL *This,
OUT BOOLEAN *State
)
{
if (State == NULL) {
return EFI_INVALID_PARAMETER;
}
*State = ArmGetInterruptState();
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
CpuInit (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_CPU_INIT_TYPE InitType
)
{
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
CpuRegisterInterruptHandler (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
)
{
return RegisterInterruptHandler(InterruptType, InterruptHandler);
}
EFI_STATUS
EFIAPI
CpuGetTimerValue (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN UINT32 TimerIndex,
OUT UINT64 *TimerValue,
OUT UINT64 *TimerPeriod OPTIONAL
)
{
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
CpuSetMemoryAttributes (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length,
IN UINT64 Attributes
)
{
return EFI_UNSUPPORTED;
}
//
// Globals used to initialize the protocol
//
EFI_HANDLE mCpuHandle = NULL;
EFI_CPU_ARCH_PROTOCOL mCpu = {
CpuFlushCpuDataCache,
CpuEnableInterrupt,
CpuDisableInterrupt,
CpuGetInterruptState,
CpuInit,
CpuRegisterInterruptHandler,
CpuGetTimerValue,
CpuSetMemoryAttributes,
0, // NumberOfTimers
4, // DmaBufferAlignment
};
EFI_STATUS
CpuDxeInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
InitializeExceptions(&mCpu);
return gBS->InstallMultipleProtocolInterfaces(&mCpuHandle, &gEfiCpuArchProtocolGuid, &mCpu, NULL);
}
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