I am working on a MIPS4Kc based reference design board. For some
reason, I need to force the interrupt vector location to address
0x91xx0200 instead of 0x80000200 in arch/mips/kernel/traps.c. The
kernel was loaded to 0x91xxxxxx space as well.
The kernel hung just after the interrupt was first time opened, after
sti(), before calibrate_delay() in init/main.c. It was weird that I
didn't see any problem if I put interrupt vector to location
0x80000200 while all other exception vectors to 0x91xxxxxx.
Was interrupt vector location hardcode to the address 0x80000200? Or
some other place I need to change to walk around it.
Thanks a bunch for your comments.