Hello

I tried to boot linux via mor1kx cpu built via fusesoc for a qmtech Cyclone IV board
https://github.com/baselsayeh/qmtech_ep4ce15-multicore

Every time the kernel jumps to or32_early_setup, the cpu throws bus errors and jumps to 0x200

Here is gdb output just before the error
https://pastebin.com/U5izVPG9

I think it is a mmu issue, but I'm not sure

How i can investigate this?
Thanks

Hi

Are you still having the bus fault issue?

Do you have a register dump just after you hit the 0x200 bp?

You could try reading the EPCR, EEAR, ESR registers.

regards Barry

Hi barry_circuit,

I solved it by using the latest 9.0 gcc for or1k,
And by using openocd to load the linux image instaid of gdb.