Booting stops after uncompressing the kernel on 3c120 board

Hello everyone,

I am trying to build a system for the 3c120 development board from altera with this manual:
And this design for the Nios II:

U-Boot starts fine, but after uncompressing the Kernel, nothing happens.

I tried it with different kernel and u-boot versions. The manual does not give a clear note, which versions should work.

Could anyone tell me a working configuration?

This is what I see in the nios2-terminal:

U-Boot 2013.01.01-00122-g39354c7 (Feb 29 2016 - 12:58:34)

Hit any key to stop autoboot:  0 
## Booting kernel from Legacy Image at d6000000 ...
   Image Name:   Linux-3.7.0
   Image Type:   NIOS II Linux Kernel Image (gzip compressed)
   Data Size:    1480167 Bytes = 1.4 MiB
   Load Address: d0000000
   Entry Point:  d0000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at d5000000
   Booting using the fdt blob at 0xd5000000
   Uncompressing Kernel Image ... OK