From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Thu, 18 Jun 2015 23:18:16 +0200 Subject: [Buildroot] [PATCH 2/2] zedboard: Upgrade to U-Boot 2015.07 In-Reply-To: <1434644878-595-2-git-send-email-xvikto03@stud.fit.vutbr.cz> References: <1434644878-595-1-git-send-email-xvikto03@stud.fit.vutbr.cz> <1434644878-595-2-git-send-email-xvikto03@stud.fit.vutbr.cz> Message-ID: <20150618231816.513316f9@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Dear Jan Viktorin, On Thu, 18 Jun 2015 18:27:58 +0200, Jan Viktorin wrote: > From: Jan Viktorin > > Until recently, generation of a bootloader for the Avnet > Zedboard (and in general all Xilinx Zynq based boards) > has required to use the development tools by Xilinx > (Vivado, XSDK) and to walk through a quite painful > procedure to generate the First Stage Boot Loader > (FSBL) and the bootable BOOT.BIN image. > > This commit makes Buildroot independent on the Xilinx > flow by utilizing U-Boot SPL and booting the Zynq's > PL by U-Boot. > > The FSBL generation is not a problem anymore with U-Boot > 2015.07 where a generic ps7_init.c file is included and > used to build the U-Boot SPL for various boards including > Zedboard. The ps7_init.c file has been released under > GNU/GPL license for this purpose. For details, see > > http://lists.denx.de/pipermail/u-boot/2015-April/210664.html > > To create the BOOT.BIN automatically, there is a script > zynq-boot-bin.py in the Xilinx github repository. This > script is not included in the upstream of U-Boot so > I attach it as a series of patchs (0001-0003) generated > against U-Boot 2015.07. It is a bit annoying to have this script as patches. Will it be merged in the upstream U-Boot at some point? If yes, then having it as patches is OK. Otherwise, I'd prefer to have a separate host-zync-boot-script package, which simply downloads and installs this script in $(HOST_DIR), and then only the patch changing the U-Boot Makefile to call this script. > There is a little catch, the U-Boot 2015.07 is not released > yet, so this commit is based on 2015.07-rc2. However, as > soon as it is out, the download site of U-Boot can be > redirected to the release archive instead of fetching it > by git. Yes, this is OK. > Steps to create a working Buildroot for Zedboard: > > a) use U-Boot 2015.07 (done by this commit) > b) patch it to use zynq-boot-bin.py (done by this commit) > -------------------------- > 1) make zedboard_defconfig > 2) make UBOOT_BIN=u-boot-dtb.img > 3) copy files boot.bin, u-boot-dtb.img, rootfs.cpio.uboot, > uImage, zynq-zed.dtb into your SD card > 4) boot your Zedboard This should just go to board/avnet/zedboard/readme.txt, no need to have it in the commit log if you're updating that readme file. Thanks! Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com