Installing new kernel image


I'm a newbie to embedded linux. I'm working on a BBXM trying to have
linux-omap kernel 3.1.5 booted on the board.

I pulled the kernel source , configured using omap2plus_defconfig,
then make the uImage and modules. The board is currently running a
2.6.32 kernel from the narcissus build tool.

What is the proper procedure to copy uImage and modules to the sd card
and have u-boot use them? I searched a while but didn't found detailed
instructions. I'm not confident on simply copy-paste-overwrite the

Thanks in advance.