From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754794AbZHMPd1 (ORCPT ); Thu, 13 Aug 2009 11:33:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754221AbZHMPd0 (ORCPT ); Thu, 13 Aug 2009 11:33:26 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:52813 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752610AbZHMPd0 (ORCPT ); Thu, 13 Aug 2009 11:33:26 -0400 Date: Thu, 13 Aug 2009 17:33:26 +0200 From: Robert Schwebel To: Arjan van de Ven Cc: linux-kernel@vger.kernel.org Subject: Re: state of the fastboot activities? Message-ID: <20090813153326.GR13320@pengutronix.de> References: <20090813064543.GC13320@pengutronix.de> <4A84194A.5050206@linux.intel.com> <20090813152506.GQ13320@pengutronix.de> <4A84311A.3030901@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <4A84311A.3030901@linux.intel.com> X-Sent-From: Pengutronix Entwicklungszentrum Nord - Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Impressum: Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Peiner Strasse 6-8, 31137 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-5555 Inhaber: Dipl.-Ing. Robert Schwebel X-Message-Flag: See Message Headers for Impressum X-Uptime: 17:30:10 up 8 days, 2:49, 50 users, load average: 0.31, 0.34, 0.97 User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: 2001:6f8:1178:2:215:17ff:fe12:23b0 X-SA-Exim-Mail-From: rsc@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 13, 2009 at 08:28:26AM -0700, Arjan van de Ven wrote: > > That's bad :-) So there is no room for improvement any more in our > > ARM boot sequences ... > > on x86 we're doing pretty well ;-) On i.MX27 (400 MHz ARM926EJ-S) we currently need 7 s, measured from power-on through the kernel up to "starting init". This is with - no delay in u-boot-v2 - rootfs on NAND (UBIFS) - quiet - precalculated loops-per-jiffy - zImage kernel instead of uImage rsc -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |