TrustZone image problem

Hi,

I am trying to run tz_vmm script for imx6 board, I am able to compile the script for imx6 board and it is successfully creating the uImage of size 7.5 MB, But when I am trying to run this image on the board this is giving following error:

Booting kernel from Legacy Image at 10800000 ...

Image Name:

Image Type: ARM Linux Kernel Image (gzip compressed)

Data Size: 7858662 Bytes = 7.5 MB

Load Address: 10001000

Entry Point: 10001000

Verifying Checksum ... Bad Data CRC

ERROR: can't get kernel image!

What would be the problem?