RPi OS is a simple operating system based on the Raspberry Pi platform, designed to help developers learn operating system development from scratch and gain a deep understanding of how the Linux kernel works. This tutorial will guide you through the development process of RPi OS step by step and compare it with the implementation of the Linux kernel, allowing you to master the key technologies of operating system development through practice.

1. Project Introduction

The goal of the RPi OS project is to provide a simple and understandable learning path for beginners who want to learn operating system development. It is based on the Linux kernel but contains only the most basic functions and is optimized for the Raspberry Pi 3. The project adopts a step-by-step approach, building the RPi OS through a series of tasks while explaining the principles of each step and its relationship with the Linux kernel.

2. Project Features

• • Step-by-step: The project provides detailed step-by-step instructions, with corresponding code examples and explanations, helping you understand the process of building an operating system gradually.

• • Comparative Learning: By comparing with the implementation of the Linux kernel, you can gain a deeper understanding of operating system design concepts and implementation mechanisms.

• • Practice-driven: The project emphasizes hands-on practice, encouraging you to master operating system development skills through writing code and debugging programs.

• • Open Source Community: The project adopts an open-source approach, encouraging developers to participate and contribute, learning and progressing together.

3. Learning Content

The RPi OS project includes the following content:

• • Kernel Initialization: Learn how to boot the kernel, initialize hardware devices, and enter the main loop of the operating system.

• • Processor Initialization: Learn how to set the processor’s operating mode and configure cache and interrupt mechanisms.

• • Interrupt Handling: Learn how to handle interrupts from hardware devices and how to build interrupt controllers and timers.

• • Process Scheduling: Learn how to implement a simple process scheduler to manage process creation, destruction, and switching.

• • User Processes and System Calls: Learn how to create user processes and how to access kernel functions through system calls.

• • Virtual Memory Management: Learn how to implement basic virtual memory management and optimize memory usage efficiency.

4. Learning Methods

The project provides the following learning resources:

• • Code Repository: The project code is hosted on GitHub, where you can download and modify the code for testing.

• • Tutorial Documentation: The project provides detailed tutorial documentation explaining the principles and code implementations of each step.

• • Exercises: The project offers exercises to help you consolidate your knowledge and practice your skills.

Conclusion:

The RPi OS project provides a great learning platform for learning operating system development. It explains the core concepts and implementation principles of operating systems in a simple and understandable way, offering numerous exercises and community support to help you quickly master operating system development skills. Join the RPi OS project and start your journey in operating system development!

Project Address: https://github.com//s-matyukevich/raspberry-pi-os