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
KittelfjÀll 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, August 21, 2011
FPGA design from scratch. Part 51
Five years later

It is almost five years since I started my FPGA design from scratch blog. What has happened to me and what has happened at Xilinx during these years? Let's find out.

What has happened to me

Five years ago I had my own one-man consulting company,
ZooCad Consulting looking for ASIC and FPGA design work. Today I work at somewhat larger consulting company, Realtime Embedded specialized in software and hardware design for embedded systems.

Realtime Embedded

The focus here at
Realtime Embedded is the development of embedded systems. We have many years of experience with system design, hardware, software, project management, and, test and verification. Our consultants are not only technically knowledgeable, they are highly experienced and they all know what characterises successful projects.

What has happened at Xilinx

They released Design Suite 13.2.

We will download the latest versions of ISE and EDK (Embedded Edition) and take a look at all the new features. Here is the download page. Here are the ISE Design Suite 13.2 Release Notes.

We will download the full installer for Linux. The tar file is 4.62 GB!!!!

We save this file in a temporary directory where we have at least 5GB of free disk space. When the the file has been downloaded (it will take some time) it is unpacked using the following command:

--> tar xvf Xilinx_ISE_DS_Lin_13.2_0.61xd.0.0.tar.

Here is the result:

To start the installation use the following command:

--> cd ..../Xilinx_ISE_DS_Lin_13.2_0.61xd.0.0
--> sudo ./xsetup

After accepting the license agreements we have to select what to install.

We install the ISE Design Suite: System Edition in the directory /opt/Xilinx/13.2. Disk space required: 15641 MB.

We are ready to start the installation.

When we click the Install button the installation starts:

This is what has been installed:

Getting a node-locked license

Before we can start using the Design Suite tools we have get a license from the
Xilinx Product Licensing page.

We will obtain a node-locked evaluation license for 45 days which can be extended to 90 days in total. A node-locked license is locked to one host and the Ethernet MAC address of the host is used to tie the license to that machine.
Click the Generate Node-Locked License button.

Adding the host.

Use the following command to find the MAC address on a Linux machine:
--> ifconfig -a

Look for the eth0 entry and find the HWaddr:

The license file will be generated and can be downloaded from the Product Licensing page:

Click the arrow-down button to download the license file Xilinx.lic file to your download directory. To finish the license file installation we have to create a directory called .Xilinx in our home directory and move the license file to this directory.

Getting a floating license

Floating licensing is a software licensing approach in which a limited number of licenses for a software application are shared among a larger number of users over time. When an authorized user wishes to run the application they request a license from a central license server. If a license is available the license server allows the application to run. When they finish using the application, or when the allowed license period expires, the license is reclaimed by the license server and made available to other authorized users.

Setting up a license server

To setup a license server we first have to download the License Management Tools from the Xilinx download page.

We will download the 32/64 -bit Linux version.

Unzip and install the files in a directory in the license server host.

Make sure all programs are executable.

Edit the license file

Edit the license file Xilinx.lic and add the following line:

DAEMON xilinxd <path to xilinxd daemon>

Starting the license server

Use the following command to start the license server:

-->/opt/Xilinx/license/bin/lin64/lmgrd -c /opt/Xilinx/license/Xilinx.lic -l /opt/Xilinx/log/lic_log.log

Use this command to see if the license server is up and running:

--> /opt/Xilinx/license/bin/lin64/lmutil lmstat -a -c /opt/Xilinx/license/Xilinx.lic

Use this command to run license server diagnostics:

--> /opt/Xilinx/license/bin/lin64/lmutil lmdiag -c /opt/Xilinx/license/Xilinx.lic

On the client side

Add the following line to your .bashrc file to connect to the license server

export XILINXD_LICENSE_FILE=<port number>@<hostname>

See the license file for the host name <Superdatorn> and port number <2100>.

Just one more thing

Don't forget to source the settings file. In our case the command looks like this:

--> source /opt/Xilinx/13.2/ISE_DS/

Be careful

When we source the file the following paths will be added th the environment variable LD_LIBRARY_PATH.


This can cause problems when running other programs. Here is one error message I got when trying to start rapidsvn.

To fix this problem I had to run the following command:  export LD_LIBRARY_PATH=""

Posted at 14:07 by

February 2, 2012   09:58 PM PST
to avoid the first message when run the terminal you can add this line and after a clear command

source /opt/Xilinx/13.2/ISE_DS/

Good luck
September 30, 2011   10:05 AM PDT
If you are using Ubuntu you probably have bash as your default shell. Use the following command to setup the Xilinx environment.
source /usr/local/src/Xilinx/13.2/ISE_DS/ (not csh)

Add this line in your .bashrc file an you are all set.
Kazi Asifuzzaman
September 15, 2011   04:29 PM PDT
You are just too awesome! I really really appriciate your hardwork which helps us a lot. Keep up the good work and know this : your blog is the single best resource on FPGA/Embedded I have ever found.

Lund, SE

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