x86-br-qemu-kernel-dev

buildroot external project for qemu based kernel fun or your own embedded project

Prequisition

• clone project into <x86-br-qemu-root>

You may need to install some more software, the initial setup will guide you through the process.

Introduction

• make -C <x86-br-qemu-root>

After you have done the initial setup, start the br2 shell in bash by

cd <x86-br-qemu-root>  && ./br2.shell.run

Warning: Only bash is tested !!!

br2-shell:

> (br2):<your-prompt>

Inside the shell multiple commands are predefined, check out br2.shell for details. The common ones:

• br2vars, show all predefined variables
• br2init, initialize buildroot should be done at least once
• br2make , call make within buildroot project and build You can pass all targets defined in mainstream buildroot like:
  • help
  • world
  • menuconfig
  • linux
• br2qemu, run linux in qemu
• br2ssh, connect to running qemu
• br2scp, copy file to qemu

Quickstart

The following steps are needed to connect to the linux running in qemu.

# install prequisitions and run br2 shell
cd <x86-br-qemu-root>  && make && ./br2.shell.run
# init br2-shell
br2init
# build linux, rootfs and sdk 
br2make world
# run qemu
br2qemu
...
Welcome to Buildroot
buildroot login: root

Hint #1: login as root
Hint #2: ctr-a x, stops qemu