vmlinuz hang at "Loading Kernel Image ... "

[drEagle <drEagle@DOUKKI.NET>]

Hi hackers,

I can't boot a custom kernel while it is debian packaged.
With booting my dtb+zImage my netgear RN104 is booting fine.
With a vmlinuz (from a custom make-kpkg deb) and a flash-kernel (from wheezy-backports) I get hang on the message 
"Loading Kernel Image ... "

The boot.scr used is the same.

Is there any missing step I lost ?

The NetGear RN104 is an ARMADA370 (MVEBU) based and supported mainline.

What are the differences and required adds to uboot or uboot env for booting vmlinuz kernel instead of zimage kernel ?

Some logs;

*The bootlog*
...
reading /boot.scr 
865 bytes read 
## Executing script at 04000000  
Using egiga0 device  
host 192.168.1.254 is alive
Using egiga1 device  
host 192.168.1.254 is alive
reading /uImage
.................................................................................................................................
.................................................................................................................................
...........................................................................................................................
   
8278929 bytes read   
reading /uInitrd     
.................................................................................................................................
   
3023742 bytes read   
reading /dtb
12393 bytes read     
## Booting kernel from Legacy Image at 06000000 ...
   Image Name:   kernel 3.15.3-doukki2.rn104 
   Created:2014-07-01   6:55:09 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    8278865 Bytes =  7.9 MB  
   Load Address: 00008000                    
   Entry Point:  00008000  
   Verifying Checksum ... OK     
## Loading init Ramdisk from Legacy Image at 12000000 ...
   Image Name:   ramdisk 3.15.3-doukki2.rn104
   Created:2014-07-01   6:55:09 UTC 
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)  
   Data Size:    3023678 Bytes =  2.9 MB  
   Load Address: 00000000  
   Entry Point:  00000000  
   Verifying Checksum ... OK  
Loading Kernel Image ... 

*The boot.script*
setenv initrd_high "0xffffffff"
setenv fdt_high "0xffffffff"
setenv image_addr "0x06000000"
setenv image_name "/uImage"
setenv initrd_addr "0x12000000"
setenv initrd_name "/uInitrd"
setenv dtb_addr "0x02000000"
setenv dtb_name "/dtb"
setenv bootcmd "fatload usb 0:1 $image_addr $image_name;fatload usb 0:1 $initrd_addr $initrd_name; fatload usb 0:1 $dtb_addr $dtb_name; bootm $image_addr $initrd_addr $dtb_addr"
setenv bootargs "console=tty1 console=ttyS0,115200 mtdparts=armada-nand:0x180000@0(u-boot),0x20000@0x180000(u-boot-env),0x600000@0x200000(uImage),0x400000@0x800000(minirootfs),-(ubi) bdtype=rn104 root=LABEL=ROOTFS rootwait ro panic=5"
setenv ipaddr '192.168.1.77'
setenv ethload "setenv ethact egiga0; ping 192.168.1.254; setenv ethact egiga1; ping 192.168.1.254"
run ethload
boot