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 4.80.1 #2 (Red Hat Linux)) id 1VJePa-0004Qo-Ou for barebox@lists.infradead.org; Wed, 11 Sep 2013 07:00:27 +0000 Date: Wed, 11 Sep 2013 09:00:04 +0200 From: Sascha Hauer Message-ID: <20130911070004.GJ30088@pengutronix.de> References: <20130905010436.GP19598@titan.lakedaemon.net> <20130905064639.GO30088@pengutronix.de> <20130909174117.GA12927@titan.lakedaemon.net> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20130909174117.GA12927@titan.lakedaemon.net> 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" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: imx-usb-image write to usb error To: Jason Cooper Cc: barebox@lists.infradead.org On Mon, Sep 09, 2013 at 01:41:17PM -0400, Jason Cooper wrote: > On Thu, Sep 05, 2013 at 08:46:39AM +0200, Sascha Hauer wrote: > > Hi Jason, > > > > On Wed, Sep 04, 2013 at 09:04:36PM -0400, Jason Cooper wrote: > > > All, > > > > > > This is the first I've messed with i.MX, so I'm a little lost. :) > > > > > > I'm putting together a patch to add support for the SanDisk Connect > > > Wireless Media Drive [1], code dump from SanDisk is here [2]. It turns > > > out when you unplug the battery, it'll show up as the Freescale hid. > > > > > > Here's what I get: > > > > > > $ ./scripts/imx/imx-image -c \ > > > arch/arm/boards/sandisk-connect-wmd/flash-header-lpddr1.imxcfg -f \ > > > barebox.bin -o barebox.imx > > > $ sudo ./scripts/imx/imx-usb-loader -vvvvv ./barebox.imx > > > found i.MX50 USB device [15a2:0052] > > > > I never tested this on an i.MX50 due to lack of hardware. Have a look > > at scripts/imx/imx-usb-loader.c at imx_ids. i.MX50 is very similar to > > i.MX51. The i.MX51 has: > > > > { > > .vid = 0x15a2, > > .pid = 0x0041, > > .name = "i.MX51", > > .header_type = HDR_MX51, > > .mode = MODE_BULK, > > .max_transfer = 64, > > }, > > > > The header_type, mode and max_transfer fields are missing for i.MX50. I > > assume that's the problem. > > Well, it looks like it works, but I'm unable to get a barebox prompt on > the tty. (patches to come once I get a prompt). So I decided to try > tackling the problem from the other end for a bit. Namely booting a > mainline kernel from the installed u-boot. > > Something is confusing me though. The part number on the chip is > MCIMX502CVK8B. Which, iiuc, is an imx51. The provided kernel spits out > this: > > [ 0.000000] MXC_Early serial console at MMIO 0x53fbc000 (options '115200') > > However, the only imx SoCs using that address range are imx53 and imx25, > according to arch/arm/boot/dts/ in Linux, at least. > > In addition, the docs for the imx50 clearly state that it uses DCD v2 > (version = 0x40) [1] (Table 6-27, DCD Header), but the code in barebox's > imx-image.c says imx51 uses DCD v1... The i.MX53 is not much more than a moderately improved i.MX51. The i.MX50 is somewhere in between. Maybe it already uses the v2 header format. Have you tried copying the values from the i.MX53? > > Anyone with more experience with Freescale SoCs care to fill in the > blanks? The first hint I'm on the wrong path is that I feel like I need > to write a whole dtsi file from scratch. :-/ The i.MX51 and i.MX53 have a very similar memory map. Only the AIPS1/2 base addresses are different to allow for bigger SDRAM on the i.MX53. The i.MX50 memory map seems to be a subset of the i.MX53. What I'm afraid is really different between i.MX50 and i.MX53 is the clock controller. Sascha -- 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 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox