From: Matthias Weisser <weisserm@arcor.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] Image copy to ram
Date: Tue, 12 Apr 2011 20:47:46 +0200 [thread overview]
Message-ID: <4DA49E52.3040605@arcor.de> (raw)
In-Reply-To: <201104121220.20472.vapier@gentoo.org>
Am 12.04.2011 18:20, schrieb Mike Frysinger:
> On Tuesday, April 12, 2011 04:01:18 Matthias Wei?er wrote:
>> I looked into the documentation but I can't find a command which copies
>> an image from one address to another.
>
> you mean 'cp' ?
Well, not exactly. cp doesn't know anything about the size of an image
and is, compared to a simple memcpy or even an optimized version of
memcpy, painfully slow which would eat up my expected performance
improvements. A quick hack showed that a "imcpy" command could save me
some 400ms on boot time which is about 50% of the total time spend in
u-boot.
Regars,
Matthias
next prev parent reply other threads:[~2011-04-12 18:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-12 8:01 [U-Boot] Image copy to ram Matthias Weißer
2011-04-12 16:20 ` Mike Frysinger
2011-04-12 18:47 ` Matthias Weisser [this message]
2011-04-12 19:12 ` Mike Frysinger
2011-04-12 19:43 ` Matthias Weisser
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