I'm currently trying to get the mips port to work on a galileo gt64115 board
with a rm5231 chip.
I'm OK right until the point when I'm installing exceptions into
non-cacheable space in arch/mips/kernel/traps.c
as soon as I memcpy except_vec3_generic to KSEG0 + 0x180 and flush the
instruction cache, my machine hangs, and I can't see why!
/* Copy the generic exception handler code to it's final destination. */
memcpy((void *)(KSEG0 + 0x80), &except_vec1_generic, 0x80);
memcpy((void *)(KSEG0 + 0x100), &except_vec2_generic, 0x80);
memcpy((void *)(KSEG0 + 0x180), &except_vec3_generic, 0x80);
flush_icache_range(KSEG0 + 0x80, KSEG0 + 0x200);
Is it possibly something to do with the monitor I'm using? I'm using both
PROM and in desperation, a vxworks one (it can see the ethernet card, thus
speeding up kernel loads tremendously).
How does the monitor do exceptions? Do I have to do something special with
exceptions when a monitor is present?