From mboxrd@z Thu Jan 1 00:00:00 1970 From: Otavio Salvador Date: Tue, 6 Sep 2016 10:53:30 -0300 Subject: [U-Boot] Building u-boot.imx and SPL simultaneously In-Reply-To: <20160906134051.GL4990@bill-the-cat> References: <226b38f1-0f0f-a997-2272-5bb13d0856bc@jikos.cz> <24f0546a-7a65-45ac-5128-667ff6fb87fa@jikos.cz> <4836871c-e9a3-f8dd-15b3-f30f958337bf@jikos.cz> <20160906134051.GL4990@bill-the-cat> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tue, Sep 6, 2016 at 10:40 AM, Tom Rini wrote: > On Fri, Sep 02, 2016 at 10:53:58PM +0200, Petr Kulhavy wrote: >> Hi Fabio, >> >> On 02/09/16 22:03, Fabio Estevam wrote: >> >You don't need u-boot.imx to boot the board with imx_usb_loader. >> >Check the README update that Stefano did with this commit: >> > >> >commit 40f4839ce12adfc0223d6e3035cf9c3a4754a0ec >> >Author: Stefano Babic >> >Date: Fri Dec 11 17:30:42 2015 +0100 >> > >> > imx_common: check for Serial Downloader in spl_boot_device >> > >> > Check for bmode before reading the boot device >> > to check if a serial downloader is started, >> > and returns UART if the serial downloader is set, >> > letting SPL to wait for an image if >> > CONFIG_SPL_YMODEM_SUPPORT is set. >> > >> > This allows to load again a SPL based board >> > with imx_usb_loader together with a tool >> > such as kermit. >> > >> > Signed-off-by: Stefano Babic >> > CC: Tim Harvey >> > CC: Fabio Estevam >> > CC: Eric Nelson >> > Reviewed-by: Eric Nelson >> > Tested-by: Eric Nelson >> This is not particularly what I want to do. I want to load the >> u-boot.img directly via the imx_usb_loader. >> The kermit method is unacceptably slow for a production environment. > > Another place this doesn't work (which is where it doesn't work for me) > is when the console is already open and I can't easily take it away to > shoot over the next stage via Y-MODEM. > > Would it be possible to implement having the next stage also be sent via > imx_usb_loader? ie there's examples today of doing u-boot.imx + kernel > + initrd via imx_usb_loader, so what would be needed for SPL + > u-boot.img (+ kenrel + initrd) via imx_usb_loader? Thanks! It should be the same except that the image will be already loaded and we need to instruct the SPL to jump to it. Am I missing something? ... zImage-foo:load 0x82000000 core-image-minimal-foo.cpio.gz:load 0x83800000 u-boot.imx:clear_dcd,jump header -- Otavio Salvador O.S. Systems http://www.ossystems.com.br http://code.ossystems.com.br Mobile: +55 (53) 9981-7854 Mobile: +1 (347) 903-9750