embedded help for linux links

Hi,
I am a newbie in the embedded linux world, we are working to build a
bridge (E1/T1 ethernet and E3/T3 ) with ppc8260.
Could anybody direct me some links so that I can have a good starting
point of linux on PPC in order to get a better idea of what is happening
in this list and embedded linux world in general?

Thanks for your time..
bye..
Om.

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