From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Sun, 10 Apr 2005 22:21:02 +0200
From: "Devon H. O'Dell " <dodell@offmyserver.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Small bits of progress on SIMpad, couple of ARM questions
Message-ID: <20050410202102.GH97206@smp500.sitetronics.com>
References: <20050410130007.GC97206@smp500.sitetronics.com>
	<42596403.2020508@zappe.us>
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On Sun, Apr 10, 2005 at 11:36:03AM -0600, Michael Zappe wrote:
> Well, I just did the same thing for OpenBSD on IXP (XScale core), and=20
> here are some of the issues you may want to look at.=20
>=20
> It seems there's an errata with the XScale core that causes=20
> self-modifying code (including linkers and loaders) not to work if write=
=20
> coalescing is disabled in CP15.  Check to make sure that it is enabled=20
> in register 0.=20
>=20
> Also, make sure that the cache flush you are calling invalidates the=20
> I-cache after flushing the D-cache.=20
>=20
> One other thing to try to make sure that it's a cache issue (what it=20
> sounds like), is to try running it with caches disabled on startup.
>=20
> If you need any more help, feel free to contact me!
>=20
>    Mike

Thanks for the offer, certainly will do. I'll open up that ARM
spec and the SA-1110 datasheet again tomorrow and see if I can't
apply some of your tips. Charles and Bruce Ellis also responded
off-list with tips of their own.

I'll see if these tips combined get me any further, otherwise
I'll just accept the offers and bug you guys some more ;).

--Devon

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