45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/** @file
|
|
* Exception handling support specific for ARM
|
|
*
|
|
* Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
* Copyright (c) 2014 - 2021, Arm Limited. All rights reserved.<BR>
|
|
* Copyright (c) 2016 HP Development Company, L.P.<BR>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
*
|
|
**/
|
|
|
|
#include <Uefi.h>
|
|
|
|
#include <Chipset/ArmV7.h>
|
|
|
|
#include <Library/ArmLib.h>
|
|
|
|
#include <Protocol/DebugSupport.h> // for MAX_ARM_EXCEPTION
|
|
|
|
UINTN gMaxExceptionNumber = MAX_ARM_EXCEPTION;
|
|
EFI_EXCEPTION_CALLBACK gExceptionHandlers[MAX_ARM_EXCEPTION + 1] = { 0 };
|
|
EFI_EXCEPTION_CALLBACK gDebuggerExceptionHandlers[MAX_ARM_EXCEPTION + 1] = { 0 };
|
|
PHYSICAL_ADDRESS gExceptionVectorAlignmentMask = ARM_VECTOR_TABLE_ALIGNMENT;
|
|
|
|
// Exception handler contains branch to vector location (jmp $) so no handler
|
|
// NOTE: This code assumes vectors are ARM and not Thumb code
|
|
UINTN gDebuggerNoHandlerValue = 0xEAFFFFFE;
|
|
|
|
RETURN_STATUS
|
|
ArchVectorConfig (
|
|
IN UINTN VectorBaseAddress
|
|
)
|
|
{
|
|
// if the vector address corresponds to high vectors
|
|
if (VectorBaseAddress == 0xFFFF0000) {
|
|
// set SCTLR.V to enable high vectors
|
|
ArmSetHighVectors ();
|
|
} else {
|
|
// Set SCTLR.V to 0 to enable VBAR to be used
|
|
ArmSetLowVectors ();
|
|
}
|
|
|
|
return RETURN_SUCCESS;
|
|
}
|