[U-Boot-Users] How much does U-Boot Replace PMON? Anyone w/ opinions? (from embedded newbie)

[Sean Parker]

Andrew - 

Thanks so much for your reply and candor - that's kind of
what I needed to hear either way.

I'll check out the others you mentioned first, before
trying to dive into changing PMON (we already have had to
mod PMON, but only changing existing code/regs/etc.)

Sean

--- Andrew Dyer <amdyer at gmail.com> wrote:

> On Feb 8, 2008 1:31 PM, Sean Parker <supinlick at yahoo.com>
> wrote:
> >
> > Hello -
> >
> >   We're using PMC's MSP8510 MIPS processor. Included in
> the
> > BSP was Linux 2.6.18 and PMON2000. We have all running,
> > except the boot from CF. I'm a bit familiar with
> GRUB/LILO,
> > and I'm looking for a direct replacement, and we
> thought
> > we'd be able to use either until we saw GRUB was not
> ported
> > to MIPS.
> >
> >   However it looks lile U-Boot accomplishes both
> > (PMON+GRUB-like functionality) since I see some
> indication
> > U-Boot handles VFAT? (how about ATA CF?) (If U-Boot can
> > read a VFAT CF, and load the linux image from there,
> then
> > that negates the need for any subsequent boot loader
> like
> > GRUB/LILO - right?)
> >
> >   Any recommendations out there? (such as "trash PMON
> and
> > go with U-BOOT - it does all you want" or "look here
> xxx to
> > find what you want")
> 
> I would guess it would be easier to add code to boot from
> ATA to
> pmon-2000 (never used the -2000 version, just the old
> pmon a ong time
> ago) than to do a new port to something not supported
> (u-boot for mips
> is not in the best of shape).  That being said, we boot a
> Raza Au1550
> MIPS using u-boot off of CF.   I believe the s/w guys are
> using ext2
> on the CF instead of vfat, but it does work.
> 
> You could also look at MIPS's yamon, Broadcom's CFE, or
> MicroMonitor
> (umon) as other bootloader choices.
> 
> -- 
> Hardware, n.:
>         The parts of a computer system that can be
> kicked.
> 





God Bless 
    Sean Parker 





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