Bare metal rust device

VGA Menu operations:

• CPU data
• Draw a 320x200 image in video mode
• Reboot
• Shutdown

Building

You can build the project by running:

cargo build

To create a bootable disk image from the compiled kernel, you need to install the [bootimage] tool.

cargo install bootimage

After installing, you can create the bootable disk image by running:

cargo bootimage

This creates a bootable disk image in the target/x86_64-blog_os/debug directory.

Please file an issue if you have any problems.

Running

You can run the disk image in QEMU through.

cargo run

QEMU and the [bootimage] tool need to be installed for this.

You can also write the image to an USB stick for booting it on a real machine. On Linux, the command for this is:

dd if=target/x86_64/debug/bootimage-bare-metal.bin of=/dev/sdX && sync

Where sdX is the device name of your USB stick. Be careful to choose the correct device name, because everything on that device is overwritten.

Creating an 320x200 image to print

You could do it with this (in a std enviroment)

use image::{GenericImageView, ImageReader};
use rgb2vga::rgb2vga;

fn main() {
    let img = ImageReader::open("input.png").unwrap().decode().unwrap();
    let img = img.resize_exact(320, 200, image::imageops::FilterType::Nearest);

    let mut raw_data = Vec::new();
    for (_, _, pixel) in img.pixels() {
        let vga_color = rgb2vga((pixel[0], pixel[1], pixel[2]));
        raw_data.push(vga_color);
    }

    std::fs::write("output.bin", raw_data).unwrap();
}

Demo