From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from tango.tkos.co.il ([62.219.50.35]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1RDWLw-0002uw-90 for barebox@lists.infradead.org; Tue, 11 Oct 2011 07:02:17 +0000 Date: Tue, 11 Oct 2011 09:01:56 +0200 From: Baruch Siach Message-ID: <20111011070155.GD16040@sapphire.tkos.co.il> References: <20110308071058.GB22012@jasper.tkos.co.il> <4DE1E2FA.1090907@wellsense-tech.com> <20110529063350.GB32378@jasper.tkos.co.il> <4DE1F253.4050504@wellsense-tech.com> <20110529072803.GE32378@jasper.tkos.co.il> <4E9148E5.6070102@wellsense-tech.com> <20111010044451.GA28707@sapphire.tkos.co.il> <4E93E4F4.8040604@wellsense-tech.com> <20111011065419.GL18273@pengutronix.de> <4E93E8CB.1040504@wellsense-tech.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4E93E8CB.1040504@wellsense-tech.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: iMX35 3stack framebuffer problem To: Boaz Ben-David Cc: "barebox@lists.infradead.org" Hi Boaz, On Tue, Oct 11, 2011 at 08:57:15AM +0200, Boaz Ben-David wrote: > On 10/11/11 08:54, Robert Schwebel wrote: > > On Tue, Oct 11, 2011 at 08:40:52AM +0200, Boaz Ben-David wrote: > > Yes, I didn't mention it, but I tried your suggestion. It works > (meaning there's no flicker) but > > the problem is that the screen is blank for about 8 seconds before I > have control again to init it. > > People here said they prefer flicker over 8 seconds of blank time... > > This is why we have a framebuffer / video driver framework in Barebox. > We do not have a driver for MX35 yet, but that could of course be > changed. > > On the other hand, I'm wondering why it needs 8 s until you see > something on the Linux side. We have an MX35 system here which runs at > 532 MHz, and it needs about 1 s from power-on into Linux userspace, so > we decided to show the splash screen from there. > > rsc > > The kernel size is almost 5MB (it includes an initramfs). > > 8 seconds are from the time I call "bootm uImage" and until the init script in > the initramfs kicks in. > > If I can seriously shorten this time I will be glad to know, maybe there's > something I missed. > > Any input will be appreciated. See http://elinux.org/images/8/89/ELCE-2010-Barebox-Booting-Linux-Fast-and-Fancy.pdf. This presentation (by Robert Schwebel) specifically mentions Barebox on i.MX35. baruch -- ~. .~ Tk Open Systems =}------------------------------------------------ooO--U--Ooo------------{= - baruch@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il - _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox