From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14
Date: Tue, 18 Sep 2012 11:04:39 +0100 [thread overview]
Message-ID: <20120918100438.GC32204@mudshark.cambridge.arm.com> (raw)
In-Reply-To: <CAPfQmKJ2CJ4=yguXNa+acng0++sLYoJ1oRiEbqRjYha_N3rU6Q@mail.gmail.com>
On Fri, Sep 14, 2012 at 09:08:24AM +0100, Valentin Pistol wrote:
> Is there a reliable way to determine that they are locked down?
> Any particular register/bit I can check to confirm?
You can take a look at the DBGAUTHSTATUS register and try to determine the
signal values for SPNIDEN, DBGEN and NIDEN.
> > Completely untested patch below, please let me know how you get on...
>
> Looks good, I'll give it a try.
Great. Let me know if it helps and, if so, I'll merge it.
Will
next prev parent reply other threads:[~2012-09-18 10:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 18:42 ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on ARM_DEBUG_ARCH_V7_ECP14 Valentin Pistol
2012-09-13 21:41 ` Will Deacon
2012-09-14 8:08 ` Valentin Pistol
2012-09-18 10:04 ` Will Deacon [this message]
2012-10-09 17:05 ` Valentin Pistol
2012-10-09 21:08 ` Will Deacon
2012-10-15 20:48 ` Valentin Pistol
2012-10-16 4:26 ` Valentin Pistol
2012-10-12 11:26 ` Dietmar Eggemann
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