From: Chad Reese <kreese@caviumnetworks.com>
To: "Kevin D. Kissell" <kevink@paralogos.com>
Cc: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>, linux-mips@linux-mips.org
Subject: Re: NXP STB225 board support
Date: Thu, 08 Jan 2009 11:34:41 -0800 [thread overview]
Message-ID: <49665551.2050804@caviumnetworks.com> (raw)
In-Reply-To: <496652B7.60500@paralogos.com>
Kevin D. Kissell wrote:
> Ihar Hrachyshka wrote:
> >
> >
> > Bisecting my Linus vanilla git, I found that the problem appeared
> > after the following patch was applied:
> >
> >
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=566f74f6b2f8b85d5b8d6caaf97e5672cecd3e3e
> >
> > After reverting the patch, Linus vanilla git kernel again boots ok on
> > the board. Please, take a look.
>
> Could one of the Cavium guys explain why the new code for V2 cores does
> "ebase += ..." and not "ebase = "?
The value "(read_c0_ebase() & 0x3ffff000)" is a physical address and
must be converted into Mips KSEG address by adding CAC_BASE. My guess is
that something about the NXP STB225 isn't fully Mips r2 and doesn't
implement the ebase register correctly. I'm afraid I don't know anything
about that processor.
Chad
next prev parent reply other threads:[~2009-01-08 19:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-23 14:48 NXP STB225 board support Ihar Hrachyshka
2009-01-08 16:58 ` Ihar Hrachyshka
2009-01-08 19:23 ` Kevin D. Kissell
2009-01-08 19:34 ` Chad Reese [this message]
2009-01-08 19:42 ` David Daney
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