New Horizons

Welcome to my blog

My name is Sven Andersson and I
work as a consultant in embedded
system design, implemented in ASIC
and FPGA.
In my spare time I write this blog
and I hope it will inspire others to
learn more about this fantastic field.
I live in Stockholm Sweden and have
my own company


You are welcome to contact me
and ask questions or make comments
about my blog.


New Horizons
What's new
Starting a blog
Writing a blog
Using an RSS reader

Zynq Design From Scratch
Started February 2014
1 Introduction
Changes and updates
2 Zynq-7000 All Programmable SoC
3 ZedBoard and other boards
4 Computer platform and VirtualBox
5 Installing Ubuntu
6 Fixing Ubuntu
7 Installing Vivado
8 Starting Vivado
9 Using Vivado
10 Lab 1. Create a Zynq project
11 Lab 1. Build a hardware platform
12 Lab 1. Create a software application
13 Lab 1. Connect to ZedBoard
14 Lab 1. Run a software application
15 Lab 1. Benchmarking ARM Cortex-A9
16 Lab 2. Adding a GPIO peripheral
17 Lab 2. Create a custom HDL module
18 Lab 2. Connect package pins and implement
19 Lab 2. Create a software application and configure the PL
20 Lab 2. Debugging a software application
21 Running Linux from SD card
22 Installing PetaLinux
23 Booting PetaLinux
24 Connect to ZedBoad via ethernet
25 Rebuilding the PetaLinux kernel image
26 Running a DHCP server on the host
27 Running a TFTP server on the host
28 PetaLinux boot via U-boot
29 PetaLinux application development
30 Fixing the host computer
31 Running NFS servers
32 VirtualBox seamless mode
33 Mounting guest file system using sshfs
34 PetaLinux. Setting up a web server
35 PetaLinux. Using cgi scripts
36 PetaLinux. Web enabled application
37 Convert from VirtualBox to VMware
38 Running Linaro Ubuntu on ZedBoard
39 Running Android on ZedBoard
40 Lab2. Booting from SD card and SPI flash
41 Lab2. PetaLinux board bringup
42 Lab2. Writing userspace IO device driver
43 Lab2. Hardware debugging
44 MicroZed quick start
45 Installing Vivado 2014.1
46 Lab3. Adding push buttons to our Zynq system
47 Lab3. Adding an interrupt service routine
48 Installing Ubuntu 14.04
49 Installing Vivado and Petalinux 2014.2
50 Using Vivado 2014.2
51 Upgrading to Ubuntu 14.04
52 Using Petalinux 2014.2
53 Booting from SD card and SPI flash
54 Booting Petalinux 2014.2 from SD card
55 Booting Petalinux 2014.2 from SPI flash
56 Installing Vivado 2014.3

Chipotle Verification System

EE Times Retrospective Series
It all started more than 40 years ago
My first job as an electrical engineer
The Memory (R)evolution
The Microprocessor (R)evolution

Four soft-core processors
Started January 2012
Table of contents
OpenRISC 1200
Nios II

Using the Spartan-6 LX9 MicroBoard
Started August 2011
Table of contents
Problems, fixes and solutions

FPGA Design From Scratch
Started December 2006
Table of contents
Acronyms and abbreviations

Actel FPGA design
Designing with an Actel FPGA. Part 1
Designing with an Actel FPGA. Part 2
Designing with an Actel FPGA. Part 3
Designing with an Actel FPGA. Part 4
Designing with an Actel FPGA. Part 5

A hardware designer's best friend
Zoo Design Platform

Installing Cobra Command Tool
A processor benchmark

Porting a Unix program to Mac OS X
Fixing a HyperTerminal in Mac OS X
A dream come true

Stockholm by bike

The New York City Marathon

Kittelfjall Lappland

Tour skating in Sweden and around the world
Wild skating
Tour day
Safety equipment
A look at the equipment you need
Skate maintenance
Books, photos, films and videos
Weather forecasts

38000 feet above see level
A trip to Spain
Florida the sunshine state

Photo Albums
Seaside Florida
Ronda Spain
Sevilla Spain
Cordoba Spain
Alhambra Spain
Kittelfjäll Lapland
Landsort Art Walk
Skating on thin ice

100 Power Tips for FPGA Designers

Adventures in ASIC
Computer History Museum
Design & Reuse
d9 Tech Blog
EDA Cafe
EDA DesignLine
Eli's tech Blog
FPGA Arcade
FPGA Central
FPGA developer
FPGA Journal
FPGA World
Lesley Shannon Courses
Mac 2 Ubuntu
Programmable Logic DesignLine
World of ASIC

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Sunday, May 04, 2014
Zynq design from scratch. Part 44.

Time for a new suprise. Once again a parcel arrived and when unpacking it I found this box.

When opening the box I found the MicroZed board.

MicroZed™ is a low-cost development board based on the Xilinx Zynq®-7000 All Programmable SoC. Its unique design allows it to be used as both a stand-alone evaluation board for basic SoC experimentation, or combined with a carrier card as an embeddable system-on-module (SOM). MicroZed contains two I/O headers that provide connection to two I/O banks on the programmable logic (PL) side of the Zynq®-7000 AP SoC device. In stand-alone mode, these 100 PL I/O are inactive. When plugged into a carrier card, the I/O are accessible in a manner defined by the carrier card design.

The carrier card


All the documentation can be found at the website.

MicroZed overview

Quick start

The MicroZed board comes with a pre-installed Linux image stored on the SPI flash. When we power up the board the Linux OS will boot automatically. Here is what we have to do.

The microSD card

The MicoZed board has a holder for a microSD card. When inserted during boot up the card will be mounted under /mnt. This means that we can install programs on the SD card from our Ubuntu host that can then be executed from the Linux installation running on the MicroZed.

Copy files to the microSD

We insert the microSD into the adapter and put it in our SD card reader/writer. For more information about connecting to the Ubuntu host see part 38.

We will add a bin directory and copy the PrimeNumber application to the microSD card.


1. Verify the MicroZed boot mode (JP3-JP1) jumpers are set to QSPI card mode.

2. Connect an ethernet cable between the board and the ethernet switch.

3. Connect an USB cable between the board and the host computer. This cable connects  both power (+5V) and the terminal.

Terminal setup

We will use GTKterm as console. Start GTKterm in the Ubuntu guest OS (see part 14).

-> gtkterm &

Select port and set baud rate to 115200.

If everything works as expected we will see the zynq prompt in the console window.

Ethernet connection

We will change the MicroZed IP address to the same subnet as the rest of our system.

Now we can ping the board from our host computer.

FPGA configuration

Compared to the ZedBoard, the MicroZed does not have built-in USB-JTAG circuitry. There is a standard Xilinx PC4 connector for use with an external cable. Digilent has two JTAG programming cables we can use (HS1 and HS2). I will use the HS1 JTAG programming cable.

Install Digilent Adept JTAG drivers

Xilinx uses software from Digilent to configure Xilinx logic devices, initialize scan chains, program FPGAs, CLPDs and PROM. We will go to the Digilent web page and download all software from there. I know that some of this software is hidden somewhere in the SDK installation (/opt/Xilinx/SDK/2013.4/data/xicom/cable_drivers) but I prefer to do this installation from scratch and try to understand what is going on. For more information see part 13.

Connect to MicroZed board

We connect the programming cable between the PC4 connector and the USB port on our host computer.

PC4 connector

Jumper settings

We set the jumpers to cascaded JTAG chain.

VirtualBox settings

To make sure the USB device is recognized by our Ubuntu guest we open the VirtualBox settings and add the new USB device (Digilent Adept USB Device [0700].

After rebooting Ubuntu we can use the following commands to see if we have a working connection with the MicroZed board.

JTAG interface

You may wonder why there are two devices found. Here is the explanation.
The Zynq-7000 family of AP SoC devices provides debug access via a standard JTAG (IEEE 1149.1) debug interface. Internally, the AP SoC device implements both an ARM debug access port (DAP) inside the Processing System (PS) as well as a standard JTAG test access port (TAP) controller inside the Programmable Logic (PL). The ARM DAP as part of ARM CoreSight debug architecture allows the user to leverage industry standard third-party debug tools. For more information see the Zynq-7000 Technical Reference Manual (chapter 27).


This is all I planned to say about MicroZed for the moment. Most of the work we have done using ZedBoard can easily be transferred to MicroZed. Good luck!

Want to know more

For all of you using the MicroZeb board I recommend Adam Taylor's blog:
"Bringing up the Avnet MicroZed with Vivado".

Top   Previous   Next

Posted at 16:50 by

June 18, 2014   01:03 PM PDT
The Appendix E in the "Getting Started" states:

Download and unzip the MicroZed_Linux_sd_image archive from

When this archive is extracted to the 4GB SD card then the board will not boot. Nothing will appear in the terminal.


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