43 lines
1.5 KiB
Markdown
43 lines
1.5 KiB
Markdown
# RoBoot
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My attempt at making a bootloader and kernel.
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## How to use
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To compile, you need:
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- `i686-elf-gcc` for cross-compiling the kernel
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- A system `gcc` for compiling the host-helpers
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- `nasm` for compiling the bootloader
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- `qemu-system-i386` for emulating (`qemu-system-x86_64` will probably work too, but that is not directly supported)
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If you run `make bin`, it will generate `target/boot.bin`, this is a binary file layed out as described in [the docs](docs/bootloader.md). To burn it on a USB drive, simply `dd if=target/boot.bin of=/dev/sdb` and the drive is bootable and contains an SFS filesystem with the files in `filesystem/`.
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## Bootloader
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The bootloader is self-written, based on articles on [the OSDev wiki](https://wiki.osdev.org/). It's a single stage, ELF-loading bootloader in the most basic way possible.
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More info in [the docs](./docs/bootloader.md)
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## Kernel
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The kernel is based on [the bare bones kernel from the OSDev wiki](https://wiki.osdev.org/Bare_Bones).
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### Features
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- [x] Terminal output (with newlines!)
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- [x] _Very_ basic (and probably broken) memory management
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- [x] Interrupt handling
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- [x] Keyboard input
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- [x] Exception handling
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- [x] Minimal shell
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- [ ] Filesystem interaction
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- [ ] Show files in directory
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- [ ] Read files in directory
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- [ ] Write files in directory
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- [ ] Tests
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- [ ] Running executables from filesystem
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- [ ] Better memory management
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- [ ] Better shell
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As a test, I've implemented day 1 of [advent of code](https://adventofcode.com/) on the [AoC branch](https://github.com/Robbe7730/RoBoot/tree/AoC).
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