From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 2.mo2.mail-out.ovh.net ([188.165.53.149] helo=mo2.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1RhjbX-0003eZ-A4 for barebox@lists.infradead.org; Mon, 02 Jan 2012 15:15:16 +0000 Received: from mail190.ha.ovh.net (b7.ovh.net [213.186.33.57]) by mo2.mail-out.ovh.net (Postfix) with SMTP id EE3E1DC22B7 for ; Mon, 2 Jan 2012 16:16:09 +0100 (CET) Date: Mon, 2 Jan 2012 16:09:01 +0100 From: Jean-Christophe PLAGNIOL-VILLARD Message-ID: <20120102150901.GF945@game.jcrosoft.org> References: <1324133529-2036-1-git-send-email-s.hauer@pengutronix.de> <1324133529-2036-8-git-send-email-s.hauer@pengutronix.de> <20120101043717.GC945@game.jcrosoft.org> <20120102141345.GB5446@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20120102141345.GB5446@pengutronix.de> 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: [PATCH 7/9] ARM: move exception vectors away from start of binary To: Sascha Hauer Cc: barebox@lists.infradead.org On 15:13 Mon 02 Jan , Sascha Hauer wrote: > On Sun, Jan 01, 2012 at 05:37:17AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote: > > On 15:52 Sat 17 Dec , Sascha Hauer wrote: > > > Traditionally U-Boot and barebox have the exception vectors at > > > the start of the binary. There is no real reason in doing so, > > > because in the majority of cases this data will not be at 0x0 > > > where it could be used as vectors directly anyway. > > > This patch puts the vectors into a separate linker section and > > > defines an head function which is placed at the start of the > > > image instead. Putting this in a separate function also has > > > the advantage that it can be placed at the start of images > > > which require an additional header like several Freescale i.MX > > > images. As the head function contains the barebox arm magic > > > those images can now also be detected aas barebox images. > > > > > > Signed-off-by: Sascha Hauer > > > --- > > I've to make it optionnal as on AT91 for boot we must have it at the bigeniing > > of the binary > > Instead of this: > > "b reset\n" > ".rept 7\n" > ".word 0x0\n" > ".endr\n" > > we could do this: > > "b reset\n" > ".rept 7\n" > "1: b 1b\n" > ".endr\n" > > This looks like a exception vector table for the at91 bootloader. BTW > I just looked at a at91 datasheet and at least on the at91sam9260 the > sixth vector should contain the image size to copy. So maybe this does > not work on at91 anyway? I'm working on it so please hold on this Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox