From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Hollis Blanchard <hollisb@us.ibm.com>
Cc: linuxppc-dev@ozlabs.org, John Linn <John.Linn@xilinx.com>,
Tirumala Reddy Marri <tmarri@amcc.com>
Subject: Re: Question about DBCR0 initialization for 440
Date: Fri, 17 Apr 2009 21:04:47 +0200 [thread overview]
Message-ID: <1239995087.7210.19.camel@pasglop> (raw)
In-Reply-To: <200904171307.47734.hollisb@us.ibm.com>
On Fri, 2009-04-17 at 13:07 -0500, Hollis Blanchard wrote:
> On Friday 17 April 2009 12:22:37 Josh Boyer wrote:
> > On Fri, Apr 17, 2009 at 11:46 AM, John Linn <John.Linn@xilinx.com> wrote:
> > > Josh, any thoughts on putting this into head_44x.S?
> >
> > The code in the fsl file looks like the right solution. I do have an
> > odd question though, in that it's hard for the
> > kernel to really know if something like a BDI is running. Namely,
> > that config option doesn't cover RiscWatch in an obvious manner.
>
> Yeah, setting DBCR0 would interfere with all JTAG probes. The ifdef meands you
> can't support both a JTAG debugger and hardware breakpoints in the same
> binary? Now that's an annoying restriction.
Might be worth checking if external debug is enabled, and override it
only if it's not.
Ben.
next prev parent reply other threads:[~2009-04-17 19:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-14 20:33 Question about DBCR0 initialization for 440 John Linn
2009-04-15 16:24 ` Tirumala Reddy Marri
2009-04-17 15:46 ` John Linn
2009-04-17 17:22 ` Josh Boyer
2009-04-17 18:07 ` Hollis Blanchard
2009-04-17 19:04 ` Benjamin Herrenschmidt [this message]
2009-04-17 19:10 ` Grant Likely
2009-04-17 20:30 ` John Linn
2009-04-17 20:35 ` Josh Boyer
2009-04-17 20:41 ` John Linn
2009-04-17 20:54 ` Josh Boyer
2009-04-17 20:50 ` Hollis Blanchard
2009-04-17 20:57 ` John Linn
2009-04-17 18:57 ` Grant Likely
2009-04-17 18:58 ` John Linn
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