On Fri, 29 Aug 2014 18:03:33 +0200, Ravi Raj said:

>                     We want to design our own coustom board and we dont
> want to depend on the Board support package vendors.

It's GPL.  So you buy the board, get the initial copy of the kernel already
ported, and then do your own work from there.

Oh - and if you don't follow the terms of the GPL when you ship the product,
we'll have to hunt you down and sue you.  So make sure you have proper plans
for GPL compliance when you ship. :)