This repository contains my Linux builds and projects for ZYBO Zynq dev board. It also provides steps to manually boot linux on the ARM host of the ZYNQ. This is a custom build of linux for zynq with minimal utils. Maybe a better soloution for you is to use PetaLinux?

Files for manual boot is available in this repo at LINUX_BUILD/BOOTABLE/BARE_MIN/. To manually boot linux, you need to setup your environment to use Xilinx tools, specially XMD. For that you can use:

source /PATH/TO/XILINX/INSTALLATION/settings64.sh

Then plug-in your ZYBO board using the USB-Jtag connector. Now type xmd and then:

run: xmd:
 xmd> conenct arm hw
 xmd> source ps7_init.tcl 
 xmd> ps7_init
 xmd> dow u-boot.elf  // neccessary for jtag-usb to come up correctly
 xmd> run
 xmd> stop
 xmd> dow -data uramdisk.image.gz 0x10000000
 xmd> dow -data uImage 0x13200000          
 xmd> dow -data zynq-zybo.dtb 0x16400000 
     xmd> run

on another console, connect to board using jtag-usb:

 hossein> sudo picocom -b 115200 /dev/ttyUSB1:		
 => bootm 0x13200000 0x10000000 0x16400000

Although I am still using this method, but it is very tidious and time consuming. I do not recommend this method at all. The script for automating this process is available in this repository at RootFs.

1- First you need to download the arm root file system from http://www.wiki.xilinx.com/Build+and+Modify+a+Rootfs. You can use a copy of arm_ramdisk.image.gz if you have it localy available.

2- Unzip the file by typing:

gunzip arm_ramdisk.image.gz

3- Make sure the unzipped file has the proper permission for user root:

chmod u+rwx arm_ramdisk.image

4- Mount the ramdisk to local drive (assuming the tmp_mnt is already created):

sudo mount -o loop arm_ramdisk.image tmp_mnt/

5- Make changes in the file system an unmount and zip the temporary folder:

sudo umount tmp_mnt/ & gzip arm_ramdisk.image

6- The image needs to be wrapped around u-boot headers, for that use mkimage utility (if you don't have it: apt-get install u-boot-tools):

mkimage -A arm -T ramdisk -C gzip -d arm_ramdisk.image.gz uramdisk.image.gz

7- Do neccessary cleanups:

rm -rf tmp_mnt

Now that the filesystem is ready you can save it on an SD card. These steps are automated by make_image.sh script in RootFs repository.

Copyright (c) 2016 hossein1387.

http://www.googoolia.com/wp/

https://github.com/ucb-bar/fpga-zynq