reading files in /proc/device-tree

[Benjamin Herrenschmidt]

> Just read the file.
> 
> segher at victim:~ $ xxd -g4 /proc/device-tree/memory/reg
> 
> 00000000 00000000 00000000 80000000         ; 2GB at 0
> 00000001 00000000 00000000 80000000         ; 2GB at 4GB
> 
> (comments are mine, data is faked).
> 
> There might be more memory nodes; read them all and take
> the union.
> 
> Also, the format of the entries is dependent on the
> #address-cells and #sized-cells properties.

 ... of the parent node :) read the OF spec for more details

Ben.