Re: How to use the device tree for lite5200

Kumar Gala wrote:

On Dec 6, 2006, at 9:59 AM, Wolfgang Grandegger wrote:

quoted

Hello,

I want to boot PowerPC Linux 2.6.19 on my Icecube board but I didn't
succeed yet to get lite5200.dts compiled and an appropriate image 
created:

   $ dtc -b0 lite5200.dts
   DTC: dts->dts  on file "lite5200.dts"
   ERROR: Missing /chosen node
   Input tree has errors

What is the procedure to make and boot an uImage for the U-Boot
bootloader. I read about the third argument for bootm but did not
understand how to use it.

How have you booted in the past?  Do you tftp down the images or run 
from flash?

Yes, at least for development.

Here's an example assuming you have a kernel image at address $loadaddr 
and the dtb at $ftaddr

dtc -b0 -Idts -Odtb -V16 lite5200.dts > lite5200.dtb

download lite5200.dtb to the system

=> bootm $loadaddr - $fdtaddr

Great, that worked with the additional "-f" option, as suggested by 
Grant. Now I can boot the kernel but BESTCOM and FEC support seem still 
missing. Are there already patches around?

Thanks to all who replied.

Wolfgang.