From: jamie@jamieiles.com (Jamie Iles)
To: linux-arm-kernel@lists.infradead.org
Subject: v6 software reset fails on 1176
Date: Tue, 23 Aug 2011 18:56:38 +0100 [thread overview]
Message-ID: <20110823175638.GB2263@gallagher> (raw)
In-Reply-To: <20110823174736.GG10062@e102144-lin.cambridge.arm.com>
On Tue, Aug 23, 2011 at 06:47:36PM +0100, Will Deacon wrote:
> You need to make sure you call cpu_reset by jumping to its *physical*
> address. If that happens to alias with the virtual address of the kernel, it
> won't currently work but I have a solution to this in my kexec branch.
>
> You can do something like:
>
> typedef void (*phys_reset_t)(unsigned long);
>
> phys_reset = (phys_reset_t)virt_to_phys(cpu_reset);
> phys_reset(0xffff0000);
OK, that makes perfect sense! I'll give it a go on my hardware tomorrow
when I'm back in the office.
All of the other mainline users of cpu_reset() just call it directly, so
I guess they need to do the same thing?
Jamie
next prev parent reply other threads:[~2011-08-23 17:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-23 16:32 v6 software reset fails on 1176 Jamie Iles
2011-08-23 17:09 ` Will Deacon
2011-08-23 17:34 ` Jamie Iles
2011-08-23 17:47 ` Will Deacon
2011-08-23 17:56 ` Jamie Iles [this message]
2011-08-23 18:00 ` Will Deacon
2011-08-24 12:27 ` Jamie Iles
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