Cyclone V HPS Preloader Not Working

Hello,

I have been trying to get the fpga2sdram bridge to work on my de1-soc board in order to be able to write to the HPS DDR3 RAM from the FPGA side with no luck. I have done the following steps:

1. Added the FPGA2SDRAM bridge in Qsys->HPS
2. Generated the synthesis files
3. Opened the SoC EDS shell and ran bsp-editor
4. Selected the hps_isw_handoff folder.
5. Checked FAT_SUPPORT and Generated the files.
6. cd'd into the software/spl_bsp folder and ran make and make uboot.
7. Copied the preloader onto the A2 partition with alt-boot-disk-util.
8. Copied the u-boot.img onto the FAT partition.

however, when power up the board, I get nothing on the UART terminal.

Is there something that I am missing?