From: Bob Cochran <ppc@mindchasers.com>
To: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: MSR loses DE bit in 3.3, BDI2000 cant handle breakpoints?
Date: Tue, 29 May 2012 14:13:21 -0400 [thread overview]
Message-ID: <4FC511C1.4050007@mindchasers.com> (raw)
In-Reply-To: <OF00FC5182.FED0E75C-ONC1257A0D.003AA532-C1257A0D.0041F687@transmode.se>
On 05/29/2012 08:00 AM, Joakim Tjernlund wrote:
>
> I cannot make simple break points using BDI2000 work in 3.3, abatro suggests that it
> depends on MSR[DE] is cleared by the kernel. With the emulator I can see that
> MSR[DE] is off quite often by just stopping at random times and looking at MSR so
> it seems like the kernel is turning MSR[DE] off most of the time.
> Anyone else having success debugging 3.3 with BDI2000?
>
> This is on a P2010(E500/BOOKE) CPU.
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
I debug using Freescale CodeWarrior and a USB tap, which also rely on
MSR[DE] being set. I develop from the mainline & have a patch set that
I just recently re-tweaked to support kernel debugging.
If you want, I'll send you my set of patches for the kernel. They might
be useful (not sure since I don't use BDI).
next prev parent reply other threads:[~2012-05-29 19:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-29 12:00 MSR loses DE bit in 3.3, BDI2000 cant handle breakpoints? Joakim Tjernlund
2012-05-29 18:13 ` Bob Cochran [this message]
2012-05-29 18:29 ` Joakim Tjernlund
2012-05-29 20:13 ` Wolfgang Denk
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