How to creating own rootfs for linux on beagleboard

Hello,
       I have BB revision C2.I want to create own rootfs using
codesourcery tool-chain.
I have built kernel using codesourcery tool-chain.My application has
built in codesourcery tool-chain.I want to time profile and good
performance on beagleboard.

any documents or link send me.

Thanks,
Gaurang