Linaro ICS on i.MX53 SABRE tablet

I built 12.04 per the instructions for i.MX53 and tried it on my i.MX53 SABRE tablet, but after u-boot loads the uImage and uIinitrd and then boots the kernel I get no output from the kernel. I tried the prebuilt images as well and get the same behavior.

I backed up to 11.11 and get the same behavior from this as well.

Should this work? If not, does anyone have a recipe for getting one of the Linaro ICS builds to work on a SABRE tablet?

Thanks in advance.

Tim