Embedded System Switch from 18.104.22.168 to 2.6.30+ No output at all
I hope I'm posting in the correct forum.
I am working with a (specialized) embedded system (NEC VR4133A MIPS CPU)
It is currently running U-Boot 1.3.2 + Linux-Kernel 22.214.171.124.
I am trying to get a kernel >=2.6.30 running on the box.
I do have the source-code and config for the system running on there and i was able to build a running kernel from the sources.
I was also able to port the drivers for the board to 126.96.36.199 and successfully boot it.
Now I'm trying to port the drivers to a kernel >=2.6.30.
With some patching i managed to compile the kernel (actually I'm using 188.8.131.52 for testing) but when i try to boot it through U-Boot, I do not get any (serial-)console output at all after u-boot passes execution to the kernel.
I even put a printk in the very beginning of the setup.c for the board, still nothing.
Right now I'm becoming really frustrated as I'm running out of ideas and I've got no clue how to debug the kernel without even getting any output at all.
I am not even sure how to test if there's something wrong with the console-drivers or if the kernel doesn't boot at all.
I am also wondering if this could be caused by a too old u-boot (even though i don't really get how this could cause a kernel not booting at all when it can successfully boot an older kernel).
I hope someone can point me into the right direction.
Thanks in advance,