Contiki-NG
fault-handlers.c
1/*
2 * Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holder nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30/*---------------------------------------------------------------------------*/
31#include "inc/hw_types.h"
32#include "inc/hw_memmap.h"
33#include "inc/hw_cpu_scs.h"
34/*---------------------------------------------------------------------------*/
35#define fault_handlers_hard_fault_isr FaultISR
36/*---------------------------------------------------------------------------*/
37void
38fault_handlers_hard_fault_isr(void)
39{
40 /*
41 * Workaround for (Im)precise Bus Faults caused under unknown circumstances,
42 * likely by access to RFC registers while the RF PD is off (which is
43 * something that should never happen because we do in fact check before
44 * accessing)
45 */
46 if((HWREG(CPU_SCS_BASE + CPU_SCS_O_CFSR) == CPU_SCS_CFSR_IMPRECISERR) ||
47 (HWREG(CPU_SCS_BASE + CPU_SCS_O_CFSR) & CPU_SCS_CFSR_PRECISERR)){
48 /* ToDo: Check BFARVALID and then BFAR to filter down even further */
49 return;
50 }
51
52 while(1);
53}
54/*---------------------------------------------------------------------------*/