Re: anyone know what's going on in dw780_errchk

[Anders Magnusson <ragge%ludd.ltu.se@localhost>]

Brad Parker wrote:
> I seem to have my foot stuck in a gopher hole.  I'm confused about a few 
> things.
> 
> - the hp.c driver in boot/ ignores the partition argument (making it 
> impossible
> to boot a miniroot I think).  fortunately the other drivers in boot/ (ra & 
> mfm)
> do honor the partition arg.
> 
> - if one does get a miniroot kernel to boot, the partition info is not
> communicated to the new kernel.  so it thinks you booted from partition 0
> ('a') and uses that as root.  rather confusing.
> 
> am I correct about that?
> 
Why would that be confusing?  There is nothing in the miniroot that says it
must be on the b partition.

> 4.3bsd sends the boot partition in r10.  It seems like using one of the
> "rpb" registers (like r4) might be a better plan.  Is there any reason
> not to send the boot partition info in r4?  (i.e. rpb_bootr4)
> 
No, not really, it has just never been a problem ignoring it :-)

-- Ragge


> other platforms (1-2 anyway) seem to use MAKEBOOTDEV()
> 
> -brad
> 
> 
>