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kumquat-buildroot/board/avnet/zedboard
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Masahiro Yamada c13f896686 configs: rename Zynq defconfig files 
These three are Zynq boards and the build procedure is almost the
same.  Having the SoC name prefix "zynq_" would be more consistent.
Also, this is the way in which the Linux Device Trees and the U-Boot
configuration files do.

This commit renames as follows:

   zedboard_defconfig     -> zynq_zed_defconfig
   microzed_defconfig     -> zynq_microzed_defconfig
   xilinx_zc706_defconfig -> zynq_zc706_defconfig

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-03-31 18:40:43 +02:00
..
uboot
readme.txt configs: rename Zynq defconfig files 2016-03-31 18:40:43 +02:00

readme.txt 

This is the buildroot board support for the Avnet Zedboard. The Zedboard is
a development board based on the Xilinx Zynq-7000 based All-Programmable
System-On-Chip.

Zedboard information including schematics, reference designs, and manuals are
available from http://www.zedboard.org .

Steps to create a working system for Zedboard:

1) make zynq_zed_defconfig
2) make
3) copy files BOOT.BIN, u-boot-dtb.img, rootfs.cpio.uboot,
	uImage, zynq-zed.dtb into your SD card
4) boot your Zedboard

The expected output:

 U-Boot SPL 2015.07 (Jul 22 2015 - 12:01:55)
 mmc boot
 reading system.dtb
 spl_load_image_fat_os: error reading image system.dtb, err - -1
 reading u-boot-dtb.img
 reading u-boot-dtb.img

 U-Boot 2015.07 (Jul 22 2015 - 12:01:55 +0200)

 Model: Zynq ZED Board
 I2C:   ready
 DRAM:  ECC disabled 512 MiB
 MMC:   zynq_sdhci: 0
 Using default environment
 ...

When using an older U-Boot then 2015.07, a working ps7_init.c
file is required to be installed into the U-Boot directory
structure. From 2015.07, the major Zynq-based boards are
supported without any manual intervention.

Resulting system
----------------
A FAT32 partition should be created at the beginning of the SD Card
and the following files should be installed:
	/BOOT.BIN
	/zynq-zed.dtb
	/uImage
	/rootfs-cpio.uboot
	/u-boot-dtb.img


All needed files can be taken from output/images/

BOOT.BIN, uImage and u-boot-dtb.img are direct copies of the same files
available on output/images/

There is a patch attached that redefines the U-Boot's environment
to work with Buildroot out-of-the-box.

You can alter the booting procedure by creating a file uEnv.txt
in the root of the SD card. It is a plain text file in format
<key>=<value> one per line:

kernel_image=myimage
modeboot=myboot
myboot=...