linux-kernel - Re: [1/1] powerpc/embedded6xx: Make reboot works on MVME5100

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Message-ID: <CAPk1OjGBKQPxvG1MOzLfxi3muJCCYcqDrtzf7TdfF6CA_xxOmg@mail.gmail.com>
Date:	Wed, 9 Mar 2016 09:54:06 +0100
From:	Alessio Igor Bogani <alessio.bogani@...ttra.eu>
To:	Scott Wood <oss@...error.net>
Cc:	linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
	Stephen Chivers <schivers@....com>
Subject: Re: [1/1] powerpc/embedded6xx: Make reboot works on MVME5100

Hi Scott,

On 9 March 2016 at 07:38, Scott Wood <oss@...error.net> wrote:
> On Tue, Mar 08, 2016 at 08:59:12AM +0100, Alessio Igor Bogani wrote:
>> The mtmsr() function hangs during restart. Make reboot works on
>> MVME5100 removing that function call.
[...]
> Do you know why MSR_IP was there to begin with?

I don't know that line came from arch/ppc pre git era.

> Does this board have a
> switch that determines whether boot vectors are high or low (I remember
> some 83xx boards that did), in which case is this fixing one config by
> breaking another?

I haven't found any in the documentation (Installation and Use Manual
6806800A38C February 2011 Edition pag 3 Sect. "Hardware
configuration"). Perhaps in the firmware (PPCBug)?

In any case I added Stephen Chivers in CC who is the author of the
code in hope that he knows better.

Thanks!

Ciao,
Alessio