1f640a4e7a
The U-Boot v2015.07 is required for successful out-of-the-box build for common Xilinx Zynq boards (including Zedboard). Signed-off-by: Jan Viktorin <viktorin@rehivetech.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
This is the buildroot board support for the Avnet Zedboard. The Zedboard is
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a development board based on the Xilinx Zynq-7000 based All-Programmable
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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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Steps to create a working system for Zedboard:
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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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The expected output:
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U-Boot SPL 2015.07 (Jul 22 2015 - 12:01:55)
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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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U-Boot 2015.07 (Jul 22 2015 - 12:01:55 +0200)
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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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/zynq-zed.dtb
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/uImage
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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-dtb.img are direct copies of the same files
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available on output/images/
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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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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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kernel_image=myimage
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modeboot=myboot
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myboot=...
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