DTS for PowerPC 440 based board

[Vinayak Kale]

Hi,
I am porting 2.6.31 for a PowerPC 440 core based board. I have couple of
queries. I would really appreciate if someone could answer since i couldn't
find info from other places.

1) Is it mandatory to create a DTS file?
2) If uboot passes BDInfo struct to kernel instead of DT blob, then in this
case does kernel creates FDT at run time?
3) I believe in case of DTS, the kernel picks up the h/w info from DTS blob
so we need not hardcode any register addresses etc inside kernel other than
in dts file. What happens in case of uboot passing just BDInfo struct. How
do we specify the register addresses etc?

Thanks
Vinayak
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