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AGL (Automotive Grade Linux) Based Infotainment System

By Anuj Mohite 142103002 Under the Supervision of Prof. Suraj Sawant (COEP Tech) Industry Mentor: Mr. Chinmay Kulkarni (Syrma SGS) Date: 11th March 2024

1. Introduction

Problem Statement

This project focuses on the development of an infotainment system based on AGL (Automotive Grade Linux). The objective is to leverage the open-source Yocto Project for customizing and optimizing embedded Linux systems tailored for automotive applications.

Motivation

  • Customization and Optimization: Tailor Linux for specific hardware and use cases.
  • Open Source Collaboration: Benefit from community-driven improvements and stability.
  • Cost and Time Efficiency: Reduce development costs and time-to-market.
  • Testing and Validation: Utilize the robust tools and quality assurance provided by the Yocto Project.

Scope

The Yocto Project is an open-source collaboration project aimed at developers of embedded Linux systems. It uses the OpenEmbedded project and BitBake tool to construct complete Linux images. The project includes:

  • Poky: Reference build host.
  • Build Appliance: For building and booting custom embedded Linux images.

Architecture

2. Objectives

  • Set up a Linux build host using the Yocto Project.
  • Build Linux images suitable for emulation and actual hardware.
  • Understand and utilize Yocto Project core components.
  • Highlight the ease of use and customization options provided by Yocto.

3. Generalized Implementation of AGL Based on Yocto - Poky Distribution

OeLinux

Yocto Project Development Environment

Architecture

Overview

overview

1. User Configurations

Define build properties such as target architecture and source storage.

Architecture

2. Metadata, Machine Configuration, and Policy Configuration

  • Metadata (.bb + Patches): Software layers with recipe files and patches.
  • Machine BSP Configuration: Board Support Package layers for machine-specific configurations.
  • Policy Configuration: Distribution layers providing general policies for images and SDKs.

Architecture

3. Sources

Access source files through upstream project releases, local projects, and SCMs.

Architecture

4. Package Feeds

Packages are sourced from a package feed area in the build directory.

Architecture

4. Experimental Setup

  • Build Host: Minimum of 32GB RAM + 200GB free disk space on a supported Linux distribution (e.g., Fedora, openSUSE, CentOS, Debian, Ubuntu).
  • Build Host Packages: Necessary packages for the build host.
  • Yocto Project Release: A release of the Yocto Project.

Supported Linux Distributions:

  • Ubuntu, Fedora, openSUSE, CentOS, Debian.

Architecture

Requirements:

  • Git 1.8.3.1 or greater
  • Tar 1.24 or greater
  • Python 2.7.3 or greater (excluding Python 3.x)

5. Methodology

Hardware Requirements

  • Raspberry Pi 4b
  • HDMI Cable with Monitor
  • Internet Connection (LAN)
  • I/O Devices: Keyboard, Mouse
  • Power Supply (5V DC)
  • LCD Display (SPI 420x320 Serial Monitor)

Yocto Project Highlights

  • Provides recent Linux kernels and system components.
  • Supports various hardware and device emulation through QEMU.
  • Layer mechanism for system extension and customization.
  • Sato reference User Interface for devices with restricted screen sizes.

6. Summary and Future Steps

Summary

  • Open-source collaboration for building custom Linux distributions.
  • Key components include Poky, BitBake, and OpenEmbedded-Core.
  • Customizable through layers and package recipes.
  • Supports various hardware architectures (BSPs).

Future Steps

  • Continuous improvement and hardware support.
  • Containerization and cloud integration.
  • Enhanced IoT support.
  • Embedded AI and machine learning integration.
  • Increased community collaboration and adoption.

Final Build Image: ~530-750 MB, deployable on Raspberry Pi 4b or QEMU on a host machine.

Thank you for your attention!