De1-soc Kernel source

Hi,

I just got the DE1-SOC board from terasic and

wan't to connect a webcam via USB-Port, using Linaro Kernel with Ubuntu.

But it seems that v4L (video for linux) must be enabled in the Kernel but isn't.

So can anyone tell me, where to get the kernel source and the terasic config,

for that board.

best regards

hauke