[Qemu-discuss] Bios debugging

[Anton Gerasimov]

Hi all,

I'm trying to debug u-boot running as BIOS in qemu (BTW, the problem is
'trying to execute code outside RAM or ROM at 0x00000000000a0000'). So I run

    qemu-system-x86_64 -bios /path/to/bios.rom -s -S

and connect with gdb using

    target remote localhost:1234

command. I start at 0x0000fff0 address and the only thing that I can see
at this address is a series of 'add %al,(%rax)' commands, which at a
closer look turn out to be just all-zeros. u-boot.rom doesn't have a row
of zeros, neither at the 0th address, nor at 0xfff0, so I wonder if it is

1) Me having debugger set up wrong.

2) Qemu loading u-boot at wrong address.

3) Anything else.

Any help is most appreciated.

Thanks,
Anton Gerasimov