Hi,
well, I've figured out the following: I was overwriting the compressed image with the uncompressed one, so I changed the loadaddr to 0x0150 0000. To be carefull, I changed also the load adress and entry point to 0x0120 0000.
That's fixed up the gzip compressed kernel image issue, now it's uncompressing successfully but then it hangs up:
==> tftpboot 1500000 vmlinux.img
Using MAC Address 08:00:3E:26:0A:5B
TFTP from server 192.168.0.183; our IP address is 192.168.0.62
Filename 'vmlinux.img'.
Load address: 0x1500000
Loading:# ################################################################
# ################################################################
# ################################################################
# #############
done
Bytes transferred = 1067691 (104aab hex)
Automatic boot of image at addr 0x01500000 ...
# # Booting image at 01500000 ...
Image Name: Welcome to uClinux with MFM
Image Type: Nios-II Linux Kernel Image (gzip compressed)
Data Size: 1067627 Bytes = 1 MB
Load Address: 01200000
Entry Point: 01200000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
The other problems remain with no change although I corrected the adresses for too.
PS: I'm using UART for both u-boot and the kernel.