From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfgang Denk <wd@denx.de>
Date: Fri, 23 Apr 2010 22:03:32 +0200
Subject: [U-Boot] [PATCH RFC] add CONFIG_BOOTCOUNT_LIMIT for MCF5445x
In-Reply-To: <20100423194341.GS20047@leila.ping.de>
References: <1272026324-18566-1-git-send-email-w.wegner@astro-kom.de>
	<20100423192535.23CF519F60@gemini.denx.de>
	<20100423194341.GS20047@leila.ping.de>
Message-ID: <20100423200332.E99F119F60@gemini.denx.de>
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To: u-boot@lists.denx.de

Dear Wolfgang Wegner,

In message <20100423194341.GS20047@leila.ping.de> you wrote:
> 
> > > + * We use transfer descriptor registers as a persistent storage
> > > + * across resets. This was tested on a MCF54455.
> > > + * Neither U-Boot nor the stock LTIB kernel seem to use
> > > + * TCD[1], so it should be safe at least until application
> > > + * start.
> > 
> > This is not sufficent, then. The bootcounter requires to be reset from
> > User Space, i. e. _after_ the application has been succesfully
> > started. If application start messes with the value, this fails to
> > work.
> 
> sorry, my wording was not correct.
> What I meant was that no device driver in stock kernel uses these
> registers, so the only possibility for them to get used is if the
> init system or application loads some non-standard drivers.

I see. I guess the comment should be updated, then.

Best regards,

Wolfgang Denk

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