custom kernel booting and debugging

[Guest smokku]

Hello.

I've built a custom kernel for Dell Streak.

When I try to boot it I get a message:

$ ./fastboot-linux -i 0x413c -c 'root=/dev/mmcblk0p2 rw rootfs=ext2 init=/sbin/init rootwait noinitrd' boot arch/arm/boot/zImage 

creating boot image...

creating boot image - 2144256 bytes

downloading 'boot.img'... OKAY

booting... FAILED (remote: invalid command)

Does this mean that Streak fastboot does not support booting custom kernel? - - Anyway, I flashed it with:

$ ./fastboot-linux -i 0x413c -c 'root=/dev/mmcblk1p2 rw rootfs=ext2 init=/sbin/init rootwait noinitrd' flash:raw boot arch/arm/boot/zImage 

creating boot image...

creating boot image - 2144256 bytes

sending 'boot' (2094 KB)... OKAY

writing 'boot'... OKAY

After booting I have a "Dell logo reboot loop".

Is there a way of getting kernel messages somehow, to see why is it failing?