linux-kernel - Re: [RFC v4 03/25] m68k/atari: Move Atari-specific code out of drivers/char/nvram.c

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Date:	Wed, 22 Jul 2015 14:22:21 +1000 (AEST)
From:	Finn Thain <fthain@...egraphics.com.au>
To:	Michael Schmitz <schmitzmic@...il.com>
cc:	Andreas Schwab <schwab@...ux-m68k.org>,
	linux-kernel@...r.kernel.org, linux-m68k@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [RFC v4 03/25] m68k/atari: Move Atari-specific code out of
 drivers/char/nvram.c


On Wed, 22 Jul 2015, Michael Schmitz wrote:

> Hi Finn,
> 
> I'm afraid I cannot test anything on Atari hardware at present - my 
> Falcon ate it's IDE disk partition table with all the fun that entails. 

That doesn't sound good.

> Haven't even begun to try and recover that yet.
> 
> If you send a patch I could build a kernel and send that to Christian 
> for testing (if he's got his Falcon up and running - might be a tad warm 
> in the attic for that, in fact).

Anyone with a suitable Atari, i.e. ATARIHW_PRESENT(TT_CLK), who can boot 
both TOS and Linux could resolve the question. (Perhaps with an emulator?)

Any old kernel binary would do, since atari_scsi should print either 
"HOSTID=n" or "this_id n" at startup.

If n doesn't agree with what TOS says about the host's SCSI ID, then I 
think a trivial patch is safe enough. Especially if cat /proc/driver/nvram 
produces a "SCSI host ID : m" that does agree with TOS.

Regards,
Finn

> 
> Cheers,
> 
>     Michael
> 
> 
> Am 14.07.15 um 20:17 schrieb Finn Thain:
> > On Mon, 13 Jul 2015, Andreas Schwab wrote:
> >
> > > Finn Thain <fthain@...egraphics.com.au> writes:
> > >
> > > > BTW, I didn't change the SCSI ID location in NVRAM. This code says 16
> > > > whereas atari_scsi says 14. Which one is correct?
> > > I think atari_scsi is wrong.  The best source I could find
> > > (http://www.gratifiant.com/nvram-falcon-t561185) places it after the
> > > video mode byte, thus at byte 16.
> > Thanks for that. BTW, I googled a phrase from that page and found this one
> >    http://toshyp.atari.org/en/004009.html
> > which may be closer to the source.
> >
> > I'll send a patch if someone can offer to test such a change to atari_scsi
> > (or merely confirm that the SCSI ID setting in TOS does not match this_id
> > given in dmesg).
> >
> 
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