[yocto] How to Create SDK

[praveenvk]

 Hi,
     I am very new to Yocto so kindly help. I wish to create bsp for our project
in which we are using arm1136 processor. I have created a layer (meta_prj) same
as meta for our project and have made required changes in
meta/conf/bblayers.conf.sample to consider meta_prj for compilation of recipes. 

Now what should be my first step? Am i supposed to cross compile toolchain
first. I have noticed we can download external toolchain, if i have to produce
one of my own how i can do it? Am i supposed to compile meta-toolchain-qte.bb to
get this toolchain?


Thanks & Regards,
praveen