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, September 28, 2014
Zynq design from scratch. Part 54.
Booting PetaLinux 2014.2 from an SD card

We will create a new PetaLinux image and store it on the SD card. When we power up the ZedBoard it will automatically start up.
Set jumpers for boot from SD card.

Using the pre-built image

We start by putting the pre-built image on the SD card and boot PetaLinux.

We use the petalinux-package command to generate a BOOT.bin file containing the first-stage bootloader, U-Boot and the bitstream.

-->petalinux-package --boot --fsbl .../zynq_fsbl --fpga .../download.bit --uboot

Copy files to SD card

Copy the BOOT.BIN and the image.ub files to the SD card in this order.

Power on the ZedBoard

Insert the SD card in the card slot, connect a terminal and power on the board. The boot process will start and we see the U-boot prompt. Then press any key to stop U-boot.  The default boot command in U-boot tries to boot from the system memory. We must change it to boot from the SD card instead. Here is the command to do that:

U-Boot-PetaLinux> setenv bootcmd 'run sdboot'; saveenv

Then type reset to restart the boot process. 

This time the system will boot and show the login prompt.

New board bringup

We follow the Petalinux Board Bringup Guide to create the new PetaLinux BSP. Normally there are three stages to the board bringup process:
  1. Create and/or configure a hardware platform ready for PetaLinux.
  2. Export the hardware platform configuration settings into the new software platform and complete any further software platform configuration steps.
  3. Build the first stage bootloader (FSBL), U-Boot and the linux image.
A few things have changed since we used PetaLinux 2013.10 in part41, so we will go through the whole flow once more.

Create a new PetaLinux platform

The first step is to create a new PetaLinux SDK software platform, ready for building a Linux system customized to our hardware platform. The petalinux-create command is used to achieve this:

-> petalinux-create --type project --template <CPU_TYPE> --name <PROJECT_NAME>

CPU_TYPE      (zynq or microblaze)
PROJECT_NAME  (the name of the platform we are building)

Here is the result.

Fixing software bugs

Before we can continue, we have to fix two software bugs in the PetaLinux design flow.
  1. Use an earlier version of grep (2.6.3)
  2. Add update-rc.d to the Petalinux bin directory

Here is a solution for the first problem found in the Xilinx forum.

Here is a solution for the second problem I found in the Xilinx forum.

Now we are ready to continue the board bringup task.

Import hardware description

1. Go to the directory which contains the hardware description (system_wrapper.hdf) generated from Vivado (LED_Controller.sdk).

-->cd ..../LED_Dimmer/LED_Controller.sdk

2. Import the hardware description with the command: petalinux-config --get-hw-description -p <plnx-proj-root>

The -p option points to the PetaLinux project (PetaZed) that will be updated to match the hardware platform configuration.

It launches the top system configuration menu when the command is used the first time or the tool detects there is a change in the system configuration.

3. We will exit without making any changes.

Build system image

1. Change into the directory of our PetaLinux project (PetaZed).

2. Run petalinux-build to build the system image


3. When the build has finished the following files have been written to the images/linux directory.

4. Follow the description in the beginning of this blog entry to put the image on an SD card and boot PetaLinux on the ZedBoard.


Fixing software bugs slows down the development speed.

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