"LOAD-SIZE too small" is Open Firmware's generic useless booting error
message.

> 0 > boot ide0:0,ofwboot.elf

":0" means the raw partition, which is not what you want if this is a
mac-formatted disk.

You can figure out what partition is the HFS partition by checking the
boot-device or boot-file or something like that variable. ("printenv"
will show you all of the variables, you'll be able to figure out which
one you want). On my machine, it's 5.

> If I am doing everything right, I would be happy to help with
> support for the Sawtooth boards

Well, once you manage to get OF to boot a kernel, it's not likely to
actually work...

-- Dan