This installment of the Embedded Linux Adventure has come a bit later than I would have liked. However in the meantime, I have traversed quite a bit of new material regarding embedded Linux development. This post will primarily be a short instruction set to get you started with PetaLinux and introduce you to some of the documentation that is available.
The short answer is that PetaLinux is a set of software tools that allows for streamlined embedded Linux development. Browsing the Xilinx documentation for PetaLinux of which there is a lot, see the links at the end reveals a few important things. For instance, while Xilinx provides tool for multiple operating systems, the PetaLinux tools are designed for Linux usage only.
Specific Linux-supported distros include Red Hat Enterprise 6.
You will need a lot. As far as storage goes, your experience may be different but just prepare for massive usage. The last thing you want is to be nearly done with your project and run into road blocks due to a lack of storage space. Getting started with PetaLinux is fairly straightforward, though it involves a lot of download and install time.
Assuming you already have a version of Vivado and SDK installed if not, get them hereyou will need to download the PetaLinux installer of the same version number. The download is over 5GB between the installer and the final downloadso start it, and then go make a sandwich and watch a couple episodes of a show you like; unless you have a blazing fast connection, it will take a while.
The directory you install it into is not of tremendous consequence. Just cd into the directory the installer is located and run petalinux-v20XX. PetaLinux uses the same licensing tools as other Xilinx software, so if you already have your other tools licensed then you should not have any issues.
Once the install is complete, you will need to download a few other development libraries, including some bit compatible libraries even if you already have the 64 bit versions of the samesince some parts of the toolchain are bit executables. A complete table of all the additional downloads is provided in the PetaLinux Reference Guide UG on page 10 also linked at the end of the post. I am leaving the whole thing out since it is quite long, but here is a screenshot of what I installed in line.
Once all the installs have been completed, you can set up your tools and create a PetaLinux project directory. Subsequently, you will need to source the PetaLinux, and possibly the Vivado tool settings within the terminal environment you are using.
You can do this by typing in the two following commands:. Alternatively, you can add the two commands to the.
Getting Started With PetaLinux
The screenshots below show the modifications I made. Once this is done, change to the directory you want to create your project in and run the command shown in the screenshot below. In the next post I will go over the steps of configuring and building a project from a board support package BSPand adding a custom application into your Linux image. November 13, November 6, April 17, June 4, January 15, January 25, I am originally from Southern California but I have spent most of my life in the Seattle area.
Growing up I was always deeply interested in the pure sciences like chemistry and physics. Throughout high school I began to look for ways that I could apply the theory I had learned.Interested in learning a little about embedded Linux? Have you worked with Xilinx FPGAs and want to explore some of the software related to their implementation?
If you answered yes, then welcome! If you answered no to at least the first question then you should read through anyway, because this is pretty cool stuff. This GSG will be using the For some more info on MicroBlaze, check out this guide. This guide will walk you through the steps of initial setup for PetaLinux on your Linux machine and the implementation of a pre-built design on the Zybo.
By the end of this Instructable, you will be able to begin tinkering with the design from either the hardware description language HDL side, or create custom applications you can run within the Linux system running on your board.
My Embedded Linux Adventure – Intro to PetaLinux
Lets get started! Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. You will need to download the installer for PetaLinux of the same version as the Vivado and SDK installation you should have on your system. Meaning if you have Vivado and SDK The download may take a while. Once the download has completed, make a directory in which you would like the PetaLinux tools to be installed in. From your terminal, change directory cd into the directory the installer was downloaded into likely Downloads and run the installer with a specified path to the directory you just created.
In your terminal, change directory cd into the directory the installer was downloaded into likely Downloads and run the installer with a specified path to the directory you just created. Starting from your home directory, enter the following commands also in screenshot above. This is just one option of installation location. You can install PetaLinux into any typical directory and it will work fine, as long as you have the tools sourced correctly, which we will cover.
As with many software development tools, there are a variety of dependencies that you will need to have in order for PetaLinux to operate. Many of the packages may already be installed on your computer, but some may not. A full list of the dependencies is included below for Ubuntu. PetaLinux operates using dependencies on bit libraries, so including those specific libraries indicated is required in order for it to operate correctly even if some may seem redundant.
In addition, PetaLinux can utilize a tftp server to streamline the development process, but it is not a requirement for it to function. The specified server package to use is tftpd, however I used tftpd-hpa and would suggest you do the same.
If you are unfamiliar with the process of setting it up, you can take a look at this quick Instructable.This post lists how to install an initscript into a build using PetaLinux Tools. Looking for PetaLinux help? Email inquiries centennialsoftwaresolutions.
If you need help installing PetaLinux Tools check out link. Note: I had to run all three of these commands, in this order, to have bootscript installed into the rootfs. Boot the rootfs:. PetaLinux Tools Yocto Project Mega-Manual 2. The pathname of the work directory in which the OpenEmbedded build system builds a recipe.
This directory is located within the TMPDIR directory structure and is specific to the recipe being built and the system for which it is being built. The actual directory depends on several things:. In this case, the work directory the build system uses to build the package would be as follows:.
The OpenEmbedded build system provides support for starting services two different ways:. SysVinit: SysVinit is a system and service manager that manages the init system used to control the very basic functions of your system.
The init program is the first program started by the Linux kernel when the system boots. Init then controls the startup, running and shutdown of all other programs. To enable a service using SysVinit, your recipe needs to inherit the update-rc. The class helps facilitate safely installing the package on the target.
To enable a service using systemd, your recipe needs to inherit the systemd class. See the systemd. This variable is used in recipes when using update-rc.
The variable is mandatory. Specifies the options to pass to update-rc. Here is an example:. The variable's default value is "defaults", which is set in the update-rc. For more information on valid parameters, please see the update-rc. The destination directory. Caution Tasks that read from or write to this directory should run under fakeroot.
This variable can have two separate functions depending on the context: a recipe name or a resulting package name. PN refers to a recipe name in the context of a file used by the OpenEmbedded build system as input to create a package.
The name is normally extracted from the recipe file name. The variable refers to a package name in the context of a file created or produced by the OpenEmbedded build system. If applicable, the PN variable also contains any special suffix or prefix. For example, using bash to build packages for the native machine, PN is bash-native. Using bash to build packages for the target and for Multilib, PN would be bash and libbash, respectively.The PetaLinux Tools offers everything necessary to customize, build and deploy Embedded Linux solutions on Xilinx processing systems.
PetaLinux tools eases the development of Linux-based products; all the way from system boot to execution with the following tools:. With these tools developers can customize the boot loader, Linux kernel, or Linux applications. They can add new kernels, device drivers, applications, libraries, and boot and test software stacks on the included full system simulator QEMU or on physical hardware via network or JTAG.
PetaLinux tools enable developers to synchronize the software platform with the hardware design as it gains new features and devices. PetaLinux tools will automatically generate a custom, Linux Board Support Package including device drivers for Xilinx embedded processing IP cores, kernel and boot loader configurations.
Such capability allows software engineers to focus on their value-added applications rather than low level development tasks. PetaLinux includes tools to customize the boot loader, Linux kernel, file system, libraries and system parameters.
These configuration tools are fully aware of Xilinx hardware development tools and custom-hardware-specific data files so that, for example, device drivers for Xilinx embedded IP cores will be automatically built and deployed according to the engineer-specified address of that device. PetaLinux tools integrate development templates that allow software teams to create custom device drivers, applications, libraries and BSP configurations.
PetaLinux provides a complete, reference Linux distribution that has been integrated and tested for Xilinx devices. The reference Linux distribution includes both binary and source Linux packages including:. Built-in tools allow a single command to deploy and boot these elements to either physical hardware, or to the included full QEMU system emulator. With PetaLinux, developers can have their Xilinx-based hardware booted and running within about 5 minutes after installation; ready for application, library and driver development.
The PetaLinux Tools License is no longer required. Users can install and use PetaLinux tools to deploy royalty free OS images. PetaLinux Tools. Xilinx - Adaptable. PetaLinux Tools host. Embedded Software Ecosystem. Linux Configuration Tools. Software Development Tools. Reference Linux Distribution. Quick-start Linux Images. Features supported by Xilinx Technical Support:. This download includes software corresponding to software releases: Xilinx Releases Download Mali User Space Components.
Training Forums. Page Bookmarked.This post uses the "meta-example" from DynamicDevices. Looking for help build software for Xilinx SoCs?
Email inquiries centennialsoftwaresolutions. Download and Install Xilinx's May 4th April 25th PetaLinux Tools You should put your external source here according to Table A-1 on p89 of the PetaLinux Tools reference guide. If you want to enter in another layer scroll down to user layer 1, hit enter, enter the path After these steps the following update gets made to the project that are not.
The space between " and bbexample" this is required. In addition. After booting your target, run bbexample:. Yocto docs.
Yocto Project Mega-Manual Morty 2. Yocto Project Mega-Manual Rocko 2. Accelerator software tools.Artix-7 Arty Base Project Part 3: PetaLinux
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Blog Tools. Chris Beams. Chromium OS.I am having trouble adding certain packages to a PetaLinux For example, when I need the "mount" command, I enable it in the menuconfig using petalinux-config -c rootfs and it becomes available from the Linux command line. That works fine, but some other packages don't seem to become available and I don't understand why. Specifically, I'm now enabling the "ethtool" command, but when I try to call it from the Linux command line, I get "command not found". When I search through the PetaLinux build files on my PC, I find the ethtool source code and object files, so I'm quite sure that it is getting included into the build.
I have tried re-building and building from scratch several times. I have found the cause of my problem and I am documenting it here for anyone else who might have the same issue. Knowing this allowed me to do some tests and stumble across my error pretty quickly. My mistake here was to assume that the PetaLinux tools would take my configuration files into account when I ran petalinux-build. Here is my new flow:. Now I am able to find ethtool and all packages in the rootfs and call them from the command line as expected.
View solution in original post. Can you please try referring to this user guide to get some insight on adding packages to rootfs:. Unfortunately the reference guide does not talk about adding packages from the menuconfig petalinux-config -c rootfs. I am not trying to add a "user application", I am adding packages that are built into Linux.
In the menuconfig, we can tick the packages that we want to include. I'm saying that when I tick certain applications, they don't actually get built into PetaLinux. In the above image, I tick "util-linux-mount" so that I can use the "mount" command in PetaLinux. That works fine. But other packages don't seem to get built-in, even if I tick them - for example "ethtool" and "blkid".
Sign In Help. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.But this is uncomfortable for use and is just bad because it resets after any change to sys-root.
The question is how can I make those packages visible in rootfs? There should be new row with userapps, wifi drivers etc. What I'm missing? Avnet speedway workshop miss those details and I couldn't find solution there. Minized BSP Also this BSP can have many, many flaws that I'm unaware of so use it with caution and at your own risk.