Date: Sun, 29 Nov 2015 18:09:39 +0000
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org,
        Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
        Laura Abbott <lauraa@codeaurora.org>, Tony Lindgren <tony@atomide.com>,
        Sebastian Reichel <sre@debian.org>, Will Deacon <will.deacon@arm.com>,
        linux-kernel@vger.kernel.org, Rob Herring <robherring2@gmail.com>,
        Pavel Machek <pavel@ucw.cz>, Grant Likely <grant.likely@linaro.org>,
        linux-omap@vger.kernel.org, Frank Rowand <frowand.list@gmail.com>,
        Andreas =?iso-8859-1?Q?F=E4rber?= <afaerber@suse.de>
Subject: Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT
 "/chosen/linux,atags" entry
Message-ID: <20151129180939.GE30871@n2100.arm.linux.org.uk>
References: <20150713131902.GH26485@atomide.com>
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 <11537945.4HX4Y84tjV@wuerfel>
 <alpine.LFD.2.20.1511271817230.22569@knanqh.ubzr>
 <20151128123328.GC30871@n2100.arm.linux.org.uk>
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On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote:
> Good. And Arnd likes the idea too. So we might be converging at last 
> which is a good thing.

I disagree with the idea that there is convergence.  There might be
convergence towards an idea, but... Here's a mail extract, from July
7th, from earlier in this very thread:

Pali:
> Me:
> > Are the ATAGs at a fixed address on the N900?
> 
> Yes, in board-rx51.c is:
> 
> .atag_offset    = 0x100
> 
> and Nokia Bootloader (proprietary) store them to that address.
> 
> > Can that be handled in
> > some kind of legacy file for the N900 which calls save_atags() on it, so
> > we don't end up introducing yet more stuff that we have to maintain into
> > the distant future?  If not, what about copying a known working atag
> > structure into a legacy file for the N900?
> >
> 
> I already asked question if it is possible to read ATAGs from DT booted
> kernel. And somebody (do not remember who) wrote to ML, that it is not
> possible and it can be done in that uncompress code.

So you're converging on an idea that has already been rejected.  That's
not a good thing, IMHO.

-- 
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
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