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@@ -5,68 +5,60 @@ System-On-Chip.
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Zedboard information including schematics, reference designs, and manuals are
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available from http://www.zedboard.org .
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-The U-Boot firmware for the Xilinx Zynq All Programmable SoC depends
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-on some proprietary code. This dependency consists of a pair of
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-files are available from the Xilinx SDK installation.
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+Steps to create a working system for Zedboard:
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-You will need these files from Xilinx SDK installation to generate
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-the U-Boot firmware:
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- ps7_init.c
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- ps7_init.h
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+1) make zedboard_defconfig
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+2) make
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+3) copy files BOOT.BIN, u-boot-dtb.img, rootfs.cpio.uboot,
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+ uImage, zynq-zed.dtb into your SD card
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+4) boot your Zedboard
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-Buildroot will create the following files and place them in the
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-<output>/images directory.
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- zynq-zed.dtb
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- rootfs.cpio.uboot
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- uImage
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- u-boot.img
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- boot.bin
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+The expected output:
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+ U-Boot SPL 2015.07-rc2 (Jun 18 2015 - 16:42:58)
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+ mmc boot
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+ reading system.dtb
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+ spl_load_image_fat_os: error reading image system.dtb, err - -1
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+ reading u-boot-dtb.img
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+ reading u-boot-dtb.img
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-uboot.bin -- U-Boot SPL w/ Xilinx boot.bin wrapper
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----------------------------------------------------
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+ U-Boot 2015.07-rc2 (Jun 18 2015 - 16:42:58 +0200)
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-Due to licensing issues, the files ps7_init.c/h are not able to be
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-distributed with the U-Boot source code. These files are required to make a
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-boot.bin file.
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-
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-If you already have the Xilinx tools installed, the following sequence will
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-unpack, patch and build the rfs, kernel, uboot, and uboot-spl.
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-
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-make zedboard_defconfig
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-make uboot-patch
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-cp ${XILINX}/ISE_DS/EDK/sw/lib/hwplatform_templates/zed_hw_platform/ps7_init.{c,h} \
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-output/build/uboot-xilinx-v2014.1/board/xilinx/zynq/
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-
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-After copying these files into the U-Boot source tree, you can
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-continue the build with:
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-
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-make
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-
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-*Notice*
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-While the build will successfully complete without the ps7_init.*
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-files, the uboot.bin file generated by this configuration will not
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-function properly on the Zedboard. Therefore, it is imperative that
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-the ps7_init.* files be copied into the U-Boot source tree any time
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-the clean, or uboot-dirclean targets are made.
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+ Model: Zynq ZED Board
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+ I2C: ready
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+ DRAM: ECC disabled 512 MiB
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+ MMC: zynq_sdhci: 0
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+ Using default environment
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+ ...
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+When using an older U-Boot then 2015.07, a working ps7_init.c
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+file is required to be installed into the U-Boot directory
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+structure. From 2015.07, the major Zynq-based boards are
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+supported without any manual intervention.
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Resulting system
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----------------
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A FAT32 partition should be created at the beginning of the SD Card
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and the following files should be installed:
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- /boot.bin
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- /devicetree.dtb
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+ /BOOT.BIN
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+ /zynq-zed.dtb
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/uImage
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- /uramdisk.image.gz
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- /u-boot.img
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+ /rootfs-cpio.uboot
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+ /u-boot-dtb.img
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All needed files can be taken from output/images/
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-boot.bin, uImage and u-boot.img are direct copies of the same files
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+BOOT.BIN, uImage and u-boot-dtb.img are direct copies of the same files
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available on output/images/
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-devicetree.dtb is just zynq-zed.dtb renamed.
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+There is a patch attached that redefines the U-Boot's environment
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+to work with Buildroot out-of-the-box.
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+
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+You can alter the booting procedure by creating a file uEnv.txt
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+in the root of the SD card. It is a plain text file in format
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+<key>=<value> one per line:
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-uramdisk.image.gz is rootfs.cpio.uboot renamed
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+kernel_image=myimage
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+modeboot=myboot
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+myboot=...
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Jan Viktorin