110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/* fault.c - common fault handler for ARCv2 */
|
|
|
|
/*
|
|
* Copyright (c) 2014 Wind River Systems, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1) Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3) Neither the name of Wind River Systems nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* DESCRIPTION
|
|
* Common fault handler for ARCv2 processors.
|
|
*/
|
|
|
|
#include <toolchain.h>
|
|
#include <sections.h>
|
|
|
|
#include <cputype.h>
|
|
#include <nanokernel.h>
|
|
#include <nanokernel/cpu.h>
|
|
#include <nanok.h>
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
#include <misc/printk.h>
|
|
#define PR_EXC(...) printk(__VA_ARGS__)
|
|
#else
|
|
#define PR_EXC(...)
|
|
#endif /* CONFIG_PRINTK */
|
|
|
|
#if (CONFIG_FAULT_DUMP > 0)
|
|
#define FAULT_DUMP(esf, fault) _FaultDump(esf, fault)
|
|
#else
|
|
#define FAULT_DUMP(esf, fault) \
|
|
do { \
|
|
(void) esf; \
|
|
(void) fault; \
|
|
} while ((0))
|
|
#endif
|
|
|
|
#if (CONFIG_FAULT_DUMP > 0)
|
|
/*
|
|
* _FaultDump - dump information regarding fault (FAULT_DUMP > 0)
|
|
*
|
|
* Dump information regarding the fault when CONFIG_FAULT_DUMP is set to 1
|
|
* (short form).
|
|
*
|
|
* RETURNS: N/A
|
|
*
|
|
* \NOMANUAL
|
|
*/
|
|
|
|
void _FaultDump(const NANO_ESF *esf, int fault)
|
|
{
|
|
ARG_UNUSED(esf);
|
|
uint32_t exc_addr = _arc_v2_aux_reg_read(_ARC_V2_EFA);
|
|
uint32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR);
|
|
|
|
PR_EXC("Exception vector: 0x%x, cause code: 0x%x, parameter 0x%x\n",
|
|
_ARC_V2_ECR_VECTOR(ecr),
|
|
_ARC_V2_ECR_CODE(ecr),
|
|
_ARC_V2_ECR_PARAMETER(ecr));
|
|
PR_EXC("Address 0x%x\n", exc_addr);
|
|
}
|
|
#endif /* CONFIG_FAULT_DUMP */
|
|
|
|
/*
|
|
* _Fault - fault handler
|
|
*
|
|
* This routine is called when fatal error conditions are detected by hardware
|
|
* and is responsible only for reporting the error. Once reported, it then
|
|
* invokes the user provided routine _SysFatalErrorHandler() which is
|
|
* responsible for implementing the error handling policy.
|
|
*
|
|
* RETURNS: This function does not return.
|
|
*
|
|
* \NOMANUAL
|
|
*/
|
|
|
|
void _Fault(void)
|
|
{
|
|
uint32_t ecr = _arc_v2_aux_reg_read(_ARC_V2_ECR);
|
|
|
|
FAULT_DUMP(&__defaultEsf, ecr);
|
|
|
|
_SysFatalErrorHandler(_NANO_ERR_HW_EXCEPTION, &__defaultEsf);
|
|
}
|