[Ltib] LTIB on Cirrus Logic EP9301

[movnet]

Hello

I'm trying to use LTIB in order to run a Linux on my EP9301 hardware. I successfuly installed LTIB and build the Kernel. 
I saved the "rootfs.ext2.gz" and "zImage" at flash (using redboot) but system stops after the message:
"Uncompressing Linux................................................................done, booting the kernel."

Here the list of the Flash contents:

RedBoot> fis list
Name              FLASH addr  Mem addr    Length      Entry point
RedBoot           0x60000000  0x60000000  0x00040000  0x00000000
rootfs.ext2       0x60040000  0x00800000  0x00180000  0x00080000
zImage            0x601C0000  0x00080000  0x00120000  0x00080000
FIS directory     0x60FE0000  0x60FE0000  0x0001F000  0x00000000
RedBoot config    0x60FFF000  0x60FFF000  0x00001000  0x00000000

My Redboot script is:

RedBoot>
  fis load rootfs.ext2
RedBoot> fis load zImage
RedBoot> exec -r 0x800000 -s 0x600000 -c "root=/dev/ram"

I'm already changed the -s parameter (ramdisk size) to the value displayed at LTIB compilation (ramdisk_size = 7488) but have no changes.

Can anyone help me to solve this problem? 

TIA

Marcelo