Bug#60173: Sparc tftpboot.img doesn't work on sun4c, root.bin images are missing

[Ben Collins <bcollins@debian.org>]

> > 
> > According to what I have read, it requires less than 8 megs (atleast tilo
> > says min 5 megs after creating the tftp image).
> 
> Correct me if I'm wrong but some old sparc prom only map 4MB at bootup.
> Therefore downloading more than that will hurt at some point in the process.
> If this is the case, could we revive the old tftpboot image from slink which
> was only a sun4[cdm] image + ramdisk packed together with piggyback?  It was
> renamed tftpboot-noultra some time ago in the main trunk before it was removed.
> 
> Moreover, I guess it eats more than 8MB of memory when running: kernel +
> ramdisk (uncompressed) + dbootstrap + libc + dynamic allocation when extracting
> rescue image, drivers.tgz and base.tgz.  For example, rescue is requiring
> 1.44MB ramdisk if installing for diskless client.
> I don't have time to investigate on memory usage at the moment, but I will
> surely do some trial in a week or so.  OTOH I'm pretty sure 8MB is not enough
> to successfully install from a tftpboot image.  It might be enough however
> using kernel+nfsroot.
> 

I can try to do that this week and include it in the next set of images.

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