mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-18 07:58:52 +09:00
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
|
|
* (C) Copyright 2007 Michal Simek
|
|
*
|
|
* Michal SIMEK <monstr@monstr.eu>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/asm.h>
|
|
|
|
void _hw_exception_handler (void)
|
|
{
|
|
int address = 0;
|
|
int state = 0;
|
|
/* loading address of exception EAR */
|
|
MFS (address, rear);
|
|
/* loading excetpion state register ESR */
|
|
MFS (state, resr);
|
|
printf ("Hardware exception at 0x%x address\n", address);
|
|
switch (state & 0x1f) { /* mask on exception cause */
|
|
case 0x1:
|
|
puts ("Unaligned data access exception\n");
|
|
break;
|
|
case 0x2:
|
|
puts ("Illegal op-code exception\n");
|
|
break;
|
|
case 0x3:
|
|
puts ("Instruction bus error exception\n");
|
|
break;
|
|
case 0x4:
|
|
puts ("Data bus error exception\n");
|
|
break;
|
|
case 0x5:
|
|
puts ("Divide by zero exception\n");
|
|
break;
|
|
#ifdef MICROBLAZE_V5
|
|
case 0x7:
|
|
puts("Priviledged or stack protection violation exception\n");
|
|
break;
|
|
case 0x1000:
|
|
puts ("Exception in delay slot\n");
|
|
break;
|
|
#endif
|
|
default:
|
|
puts ("Undefined cause\n");
|
|
break;
|
|
}
|
|
printf ("Unaligned %sword access\n", ((state & 0x800) ? "" : "half"));
|
|
printf ("Unaligned %s access\n", ((state & 0x400) ? "store" : "load"));
|
|
printf ("Register R%x\n", (state & 0x3E) >> 5);
|
|
hang ();
|
|
}
|
|
|
|
#ifdef CONFIG_SYS_USR_EXCEP
|
|
void _exception_handler (void)
|
|
{
|
|
puts ("User vector_exception\n");
|
|
hang ();
|
|
}
|
|
#endif
|