can not load kernel !!

[Pang <yodpong@intersol.co.th>]

Hi,all

I compile kernel by make menuconfig ,make dep ,make clean, make boot and
swriteboot /dev/sdb /boot/bootlx -f1 vmlinux.gz
But it can not boot with that kernel.
when I boot by SRM the error look like this:
 
>>> boot dka1 -file 0/vmlinux.gz -flag root=/dev/sda2
...
..
aboot: booted_dev = `scsi 0 5 0 1 100 0 0',guessing boot_device = `scd0'
aboot: loading compressed vmlinux.gz
aboot: ok,now starting the kernel...
 
halted CPU 0
halt code 7
machine check while in PAL mode
PC = 18af8

What's wrong ? How can I do? 
Thanks for your help,
J.Yodpong