Bootloader Update Manager

A C-based web application for updating kernel, device-tree, and U-Boot environment files on Orange Pi Zero 2W.

Features

• Web Interface: Modern, responsive UI for easy file management
• Kernel Update: Upload Image.gz to boot partition
• Device-Tree Update: Upload sun50i-h618-orangepi-zero2w.dtb
• U-Boot Environment: Upload uboot.env
• extlinux.conf Editor: View and edit boot configuration
• Progress Bar: Real-time upload progress tracking
• Auto-mount: Automatically mounts /dev/mmcblk1p1 to /media
• Large File Support: Upload files up to 200MB

Requirements

• GCC compiler
• Mongoose - Embedded web server
• cJSON - JSON parser
• Root privileges (for mounting devices)

Installing Dependencies

Ubuntu/Debian:

# Install mongoose (or build from source)
sudo apt-get install libmongoose-dev

# Install cJSON
sudo apt-get install libcjson-dev

Build from source:

# Mongoose
git clone https://github.com/cesanta/mongoose.git
cd mongoose && make && sudo make install

# cJSON
git clone https://github.com/DaveGamble/cJSON.git
cd cJSON && mkdir build && cd build && cmake .. && make && sudo make install

Building

make

Running

sudo make run
# or
sudo ./up

The server will start on http://localhost:8080

API Endpoints

Endpoint	Method	Description
/api/upload	POST	Upload files (kernel, dtb, uboot)
/api/extlinux	GET	Read extlinux.conf
/api/extlinux	POST	Write extlinux.conf
/api/progress	GET	Get upload progress
/api/mount	GET	Get mount status

Upload Parameters

For /api/upload:

• type: File type (kernel, dtb, or uboot)
• file: The file to upload

File Locations

Type	Destination File
Kernel	/media/Image.gz
Device-Tree	/media/sun50i-h618-orangepi-zero2w.dtb
U-Boot Env	/media/uboot.env
Extlinux	/media/extlinux.conf

Project Structure

.
├── main.c          # Main application (C server)
├── index.html      # Web interface HTML
├── style.css       # Web interface styles
├── app.js          # Frontend JavaScript
├── Makefile        # Build configuration
└── README.md       # This file

Screenshots

The web interface includes:

• System status panel showing mount state
• Tabbed upload interface for different file types
• Real-time progress bar during uploads
• Full-featured text editor for extlinux.conf

Security Notes

⚠️ Warning: This application requires root privileges to mount devices. Use with caution and ensure proper access controls in production environments.

License

MIT License