Need help with baremetal-arm?
Click the “chat” button below for chat support from the developer who created it, or find similar developers for support.

About the developer

umanovskis
288 Stars 64 Forks Other 99 Commits 12 Opened issues

Description

An ebook about bare-metal programming for ARM

Services available

!
?

Need anything else?

Contributors list

# 104,549
Socket....
TeX
markdow...
openapi
92 commits
# 532,991
Shell
sed
CSS
baremet...
1 commit
# 4,364
C++
c-plus-...
bundle-...
OpenCV
1 commit

Bare-metal C programming on ARM

This repository contains a tutorial ebook concerning programming a bare-metal ARM system. More specifically it deals with a ARMv7A version of the ARM Versatile Express platform, emulated on a regular PC through QEMU. You can explore the repository, or read things in order.

Table of Contents

An up-to-date PDF version is also available.

The following chapters can be thought of as the first edition of the ebook, providing a complete path from getting started to a working program that uses hardware features.

  • Chapter 0: Introduction. A brief intro to the subject and the ebook.
  • Chapter 1: Setup. A short chapter dealing with preparing a Linux environment for further development.
  • Chapter 2: The first boot. Basic use of QEMU and the cross-compiler toolchain, getting the simplest possible code to run.
  • Chapter 3: Adding a bootloader. Building the highly popular U-Boot bootloader, and getting it to boot our own code.
  • Chapter 4: Preparing a C environment. This chapter deals with the necessary work for getting from startup in assembly code to C code.
  • Chapter 5: Build & debug system. Here we show how the work can be streamlined by adding a CMake-based build system, and how the bare-metal program can be debugged.
  • Chapter 6: UART driver development. In this chapter, a device driver for a UART gets written.
  • Chapter 7: Interrupts. The chapter goes through setting up the ARM Generic Interrupt Controller, using it to receive and respond to interrupts. Also the UART driver gets adapted to use interrupts.
  • Chapter 8 - WIP: Scheduling. Work in progress.

Repository structure

The repository consists of two top-level folders. The

doc
folder contains the actual tutorial chapters. The
src
folder contains the source code corresponding to each chapter. So, for instance, src/04_cenv contains the source code as it looks after completing Chapter 4.

Additionally, the

src
folder has some shared things.
src/common_uboot
holds a stripped-down version of U-Boot used in the examples.

Have fun, and feel free to tweak and experiment, that being a great way to learn!

We use cookies. If you continue to browse the site, you agree to the use of cookies. For more information on our use of cookies please see our Privacy Policy.