This information may save you time. In order to make LanWorks BootWare(tm) PROMs to correctly start up a Linux kernel image, the "bootsector" part of the image must be modified so as to enable the boot prom to jump right into the image start address. The net-bootable image format created by netboot/etherboot's `mknbi-linux' tool differs and will not run if used with BootWare PROMs.
A modified bootsector together with a Makefile to create a BootWare-bootable image after kernel compilation can be found at -
Refer to the README file for installation details. Currently, only "zImage"-type kernels are supported. Unfortunately, kernel parameters are ignored.
This section courtesy of Jochen Kmietsch email to - for any questions.