From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TtEx9-0003Lw-B2 for barebox@lists.infradead.org; Thu, 10 Jan 2013 10:01:39 +0000 From: Juergen Beisert Date: Thu, 10 Jan 2013 11:00:53 +0100 References: <1974332.EjF16fPj1U@yiqingliang-pc> <201301101014.08015.jbe@pengutronix.de> <1982990.BKj08KPbd8@yiqingliang-pc> In-Reply-To: <1982990.BKj08KPbd8@yiqingliang-pc> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <201301101100.54062.jbe@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: about s3c2442 To: barebox@lists.infradead.org Hi Yi, Yi Qingliang wrote: > On Thursday, January 10, 2013 10:14:07 AM Juergen Beisert wrote: > > Yi Qingliang wrote: > > > On Thursday, January 10, 2013 09:36:36 AM Juergen Beisert wrote: > > > > Yi Qingliang wrote: > > > > > I'm using barebox (based on mini2440) on my s3c2442 board, > > > > > > > > > > 1. flash barebox into nand: can't start normally, but can see early > > > > > output on serial. > > > > > 2. load it in sdram: can start normally into shell, and then I use > > > > > it to boot kernel (also in sdram, also based on mini2440). > > > > > the kernel hang, no output. > > > > > > > > > > after dig into it, I found something: add "mem=64M" into the kernel > > > > > paramer, then the kernel can start. > > > > > > > > > > BUT: > > > > > the barebox doesn't pass that paramert to kernel for mini2440, > > > > > why the mini2440 kernel can start normally? > > > > > > > > > > how does the kernel on 2440 get the sdram size? > > > > > > > > There is no autodetection possible. Take a look into > > > > the "arch/arm/boards/friendlyarm-mini2440/lowlevel_init.S": This is > > > > the > > I found it, > but: > md 0x48000028 > 48000028: 000000b2 (represents is 128) > it looks like the lowlevel_init is not executed, what's the problem. Is the symbol "CONFIG_MACH_DO_LOWLEVEL_INIT" enabled in your config? Regards, Juergen -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | http://www.pengutronix.de/ | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox