https://github.com/sajalkmr/tiny-linux-build

Baremetal Linux system with a custom-built kernel and BusyBox
https://github.com/sajalkmr/tiny-linux-build

busybox kernel linux linux-kernel

Last synced: about 2 months ago
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Baremetal Linux system with a custom-built kernel and BusyBox

• Host: GitHub
• URL: https://github.com/sajalkmr/tiny-linux-build
• Owner: sajalkmr
• License: mit
• Created: 2024-02-10T16:40:05.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2024-02-16T09:09:53.000Z (11 months ago)
• Last Synced: 2024-10-14T02:23:07.602Z (3 months ago)
• Topics: busybox, kernel, linux, linux-kernel
• Language: Shell
• Homepage:
• Size: 12.5 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Baremetal minimal Linux Build with Busybox

## Components

- **Linux Kernel (configurable):** The heart of the operating system.

- **Busybox (configurable):** A suite of standard UNIX/Linux utilities combined into a single, statically-linked executable.

## Prerequisites

- A Linux or Unix-like environment (I built it on Arch WSL btw)

- Build essentials:

  - `make`

  - `gcc` (or another compiler if cross-compiling)

  - `wget`

  - `tar`

  - `cpio`

  - `musl-gcc` (for a statically linked Busybox build)

- Run this (on Arch):

  - `sudo pacman -S bc make gcc wget tar cpio && yay -S musl-gcc`

## Getting started

1. **Clone the repository:**

   ```bash

   git clone https://github.com/sajalkmr/tiny-linux-build

2. **Customize (optional):**

  Edit the build_minimal_linux.sh script to adjust the KERNEL_VERSION and BUSYBOX_VERSION if desired.

3. **Execute the build script:**

   ```bash

   sudo ./busybox.sh

3. **Running:**

   - **bzImage:** The compiled Linux kernel image.

   - **initrd.img:** The initial RAM disk containing Busybox and basic system setup.

4. **Booting with QEMU (example):**

   ```bash

   qemu-system-x86_64 -kernel bzImage -initrd initrd.img -nographic -append "console=ttyS0"