Re: two questions wrt sgimips boot

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

This has been committed.

I've tested only on IP32, so if there is any problem on
IP12 or IP2x, please report it here or via send-pr(1).

I wrote:

> If there is no objection, I'll commit this change in a few days..
> 
> I wrote:
> 
> > Anyway, I'd like to fix bootloader and kernel as following:
> > (diff attached)
> > 
> > - Make a bootloader pass bootpath which includes device via BOOTPATH
> >   (currently bootloader passes only a path in the boot filesystem.
> >    (like '/netbsd') but current kernel doesn't use it)
> > 
> > - Make a kernel use BOOTPATH in bootinfo to see boot device first,
> >   then check argv[0] if there is no valid bootinfo.
> >   If both are invalid, check OSLoadPartition variables
> >   in the ARCBIOS environment and whole argv[] arguments.
> >   (old bootloader doesn't set device path into BOOTPATH but
> >    kernel will use the OSLoadPartitions environment as before
> >    in that case)
> > 
> > - While here initialize mach_type before it's referred
> > 
> > I just wonder if argv[0] is valid on IP12 or not. Comments?
 :