Re: [Etherboot-developers] image file format and BIOS use

[Ken Y. <ke...@nl...>]

|I have another question - what is the purpose of the option manipulation
|done on nfsroot and ip options in the subst_value() code in
|mknbi-1.1/first32.c?

The simplistic answer is because that's how it was done in the original
mknbi (courtesy Markus and Gero).

The real answer is that it fills a need. If you look at the mknbi man
page, you can see three ways of filling the ip option: 1. Let the kernel
do another BOOTP/DHCP query (ip=dhcp) (my preferred way). 2. Inherit the
values from the Etherboot code (ip=rom). 3. Hardwire them (ip=....). A
similar argument applies to nfsroot. So depending on what your
infrastructure is like you can pick the appropriate way for the kernel
to get an identity.

It should be noted that ip= is a valid kernel parameter and independent
of network booting. mknbi only adds ip=rom.