From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC,PATCH 3/3] arm: remove machine_desc.io_pg_offst and .phys_io
Date: Wed, 21 Jul 2010 09:50:24 +0100 [thread overview]
Message-ID: <20100721085024.GD6009@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1279629158.27276.29.camel@pororo.lan>
On Tue, Jul 20, 2010 at 02:32:38PM +0200, Jeremy Kerr wrote:
> Hi all,
>
> > OK, so I should request Stephen to add this branch to linux-next,
> > including the fixups?
> >
>
> Hm, before I do that I should probably work out what to do in the
> CONFIG_DEBUG_ICEDCC case. How about returning 0x0 as the phys address in
> this case (ie, addruart -> mov \rp, #0), and skip setting up the mapping
> if addruart gives this zero address?
It's extremely unlikely to have a UART at address 0 (because that's by
default where the CPU jumps to on reset.) That's not to say it could
never happen - it's possible to hard-wire the CPU into 'hivec' mode
where it'll instead jump to 0xffff0000. In that case, if you're sane
you'd put your SDRAM at 0x00000000.
next prev parent reply other threads:[~2010-07-21 8:50 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-14 2:09 [RFC,PATCH 0/3] Allow late mdesc detection, v2 Jeremy Kerr
2010-07-14 2:09 ` [RFC,PATCH 2/3] arm: use addruart macro to establish debug mappings Jeremy Kerr
2010-07-14 3:58 ` [RFC, PATCH " Nicolas Pitre
2010-07-14 9:42 ` [RFC,PATCH " Jeremy Kerr
2010-07-14 12:38 ` [RFC, PATCH " Nicolas Pitre
2010-07-14 2:09 ` [RFC,PATCH 3/3] arm: remove machine_desc.io_pg_offst and .phys_io Jeremy Kerr
2010-07-20 9:14 ` [RFC, PATCH " Eric Miao
2010-07-20 9:22 ` Fwd: [RFC,PATCH " Eric Miao
2010-07-20 10:04 ` Russell King - ARM Linux
2010-07-20 10:21 ` Jeremy Kerr
2010-07-20 12:32 ` Jeremy Kerr
2010-07-21 8:50 ` Russell King - ARM Linux [this message]
2010-07-21 9:09 ` Jeremy Kerr
2010-07-22 9:46 ` Russell King - ARM Linux
2010-07-22 10:06 ` Jeremy Kerr
2010-07-22 10:21 ` Russell King - ARM Linux
2010-07-22 14:01 ` Jeremy Kerr
2010-07-22 10:35 ` Russell King - ARM Linux
2010-07-21 10:28 ` [RFC, PATCH " Nicolas Pitre
2010-07-22 11:42 ` [RFC,PATCH " Russell King - ARM Linux
2010-07-14 2:09 ` [RFC, PATCH 1/3] arm: return both physical and virtual addresses from addruart Jeremy Kerr
2010-07-15 2:48 ` [RFC,PATCH 0/3] Allow late mdesc detection, v2 Jeremy Kerr
2010-07-15 3:06 ` Eric Miao
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