ff5fef1428
Fix various typos in ArmPkg. Signed-off-by: Coeur <coeur@gmx.fr> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/** @file
|
|
|
|
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
Portions Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include "CpuDxe.h"
|
|
#include <Library/CpuExceptionHandlerLib.h>
|
|
#include <Guid/VectorHandoffTable.h>
|
|
|
|
EFI_STATUS
|
|
InitializeExceptions (
|
|
IN EFI_CPU_ARCH_PROTOCOL *Cpu
|
|
) {
|
|
EFI_STATUS Status;
|
|
EFI_VECTOR_HANDOFF_INFO *VectorInfoList;
|
|
EFI_VECTOR_HANDOFF_INFO *VectorInfo;
|
|
BOOLEAN IrqEnabled;
|
|
BOOLEAN FiqEnabled;
|
|
|
|
VectorInfo = (EFI_VECTOR_HANDOFF_INFO *)NULL;
|
|
Status = EfiGetSystemConfigurationTable(&gEfiVectorHandoffTableGuid, (VOID **)&VectorInfoList);
|
|
if (Status == EFI_SUCCESS && VectorInfoList != NULL) {
|
|
VectorInfo = VectorInfoList;
|
|
}
|
|
|
|
// initialize the CpuExceptionHandlerLib so we take over the exception vector table from the DXE Core
|
|
InitializeCpuExceptionHandlers(VectorInfo);
|
|
|
|
Status = EFI_SUCCESS;
|
|
|
|
//
|
|
// Disable interrupts
|
|
//
|
|
Cpu->GetInterruptState (Cpu, &IrqEnabled);
|
|
Cpu->DisableInterrupt (Cpu);
|
|
|
|
//
|
|
// EFI does not use the FIQ, but a debugger might so we must disable
|
|
// as we take over the exception vectors.
|
|
//
|
|
FiqEnabled = ArmGetFiqState ();
|
|
ArmDisableFiq ();
|
|
|
|
if (FiqEnabled) {
|
|
ArmEnableFiq ();
|
|
}
|
|
|
|
if (IrqEnabled) {
|
|
//
|
|
// Restore interrupt state
|
|
//
|
|
Status = Cpu->EnableInterrupt (Cpu);
|
|
}
|
|
|
|
//
|
|
// On a DEBUG build, unmask SErrors so they are delivered right away rather
|
|
// than when the OS unmasks them. This gives us a better chance of figuring
|
|
// out the cause.
|
|
//
|
|
DEBUG_CODE (
|
|
ArmEnableAsynchronousAbort ();
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
This function registers and enables the handler specified by InterruptHandler for a processor
|
|
interrupt or exception type specified by InterruptType. If InterruptHandler is NULL, then the
|
|
handler for the processor interrupt or exception type specified by InterruptType is uninstalled.
|
|
The installed handler is called once for each processor interrupt or exception.
|
|
|
|
@param InterruptType A pointer to the processor's current interrupt state. Set to TRUE if interrupts
|
|
are enabled and FALSE if interrupts are disabled.
|
|
@param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
|
|
when a processor interrupt occurs. If this parameter is NULL, then the handler
|
|
will be uninstalled.
|
|
|
|
@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
|
|
@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
|
|
previously installed.
|
|
@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
|
|
previously installed.
|
|
@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
RegisterInterruptHandler(
|
|
IN EFI_EXCEPTION_TYPE InterruptType,
|
|
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
|
|
) {
|
|
// pass down to CpuExceptionHandlerLib
|
|
return (EFI_STATUS)RegisterCpuInterruptHandler(InterruptType, InterruptHandler);
|
|
}
|