Issues with UART2 on expansion header

Hi,

I tried enabling UART2 on expansion header following the instructions
on
http://wh1t3s.com/2009/05/07/modifying-and-rebuilding-u-boot/
and re-compiled the u-boot.bin using openembedded as discussed in the
above
URL.

Above URL says that on rebooting the beagleboard and running the
command
cat /etc/services > /dev/ttyS1 results in a wiggly line on the scope
connected
to Tx pin of UART2.

But I am not able to see anything on scope. I dont know what the
problem is.
Shown below is my beagle.c file after modification. I was just
wondering weather
the changes are correct for B7 boards.

BB_version: B7