booting without SD card


We are trying to boot Beaglebone Black without an SD card. ie irrespective of whether SD card is connected or not BBB should boot from eMMC alone. Our linux version is 3.2 and u-boot version is 2013.01.01.

We are testing different u-boot scripts to boot completely from eMMC. We were successful in the u-boot part. But for some reason linux keeps getting stuck during boot when SD card is not inserted. When SD card is inserted it continues booting. This is the place where it gets stuck: