From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Fri, 27 Nov 2015 02:27:15 +0100
Subject: [U-Boot] [PATCH v1] arm: socfpga: Enable load zImage and Linux
	DTB from QSPI
In-Reply-To: <1448587489.1908.4.camel@altera.com>
References: <1448505155-3367-1-git-send-email-clsee@altera.com>
 <20151126144356.GA25328@amd> <1448587489.1908.4.camel@altera.com>
Message-ID: <201511270227.15795.marex@denx.de>
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To: u-boot@lists.denx.de

On Friday, November 27, 2015 at 02:24:49 AM, Chin Liang See wrote:
> Hi Pavel,
> 
> On Thu, 2015-11-26 at 15:43 +0100, Pavel Machek wrote:
> > Hi!
> > 
> > > Adding new environment qspiload which will load zImage and
> > > Linux DTB from serial NOR flash. The default flash offset for
> > > the images as below and they are configurable during run time.
> > > 
> > > - zImage located at    0xa0000 with assuming file size 6MB
> > > - Linux DTB located at 0x50000 with assuming file size 28kB
> > 
> > Hmm. Ok, zImage second, so that it can grow. Makes sense. Not sure if
> > 28kB is not a bit small for DTB. I'd reserve at least 64kB.
> 
> Yup, it can grow up to 64kB as the size for a sector. We used 28KB
> mainly for boot time performance.

So why don't you use UBI on the QSPI NOR ? That way, you'd secure the
binaries against bitrot as well.

Best regards,
Marek Vasut