buildroot to build toolchain on Linux

Hi,Hippo

I build the uclinux kernel as your guide.there is noting error occurred.

When I download the vmlinux(elf) to my board using command "nios2-download -g vmlinux",there are nothing output in my com port?

what is the matter? I cancel the jtag uart in menuconfig and do noting else.

my board is a custom board using Cyclone EP1C6, the default board type in the menuconfig is stratix ,is this matter?

waiting for your replay.

Thanks in advance.