50 lines
1.7 KiB
Markdown
50 lines
1.7 KiB
Markdown
# <img width="40" height="40" alt="red-pepper" src="https://i.ibb.co/mrHH6d1m/pixil-frame-0-4.png" /> pepperOS: "will never be done"
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## Trying the kernel
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First install the dependencies: `sudo apt install xorriso make qemu-system`
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Then, to compile the kernel and make an ISO image file: `make build-iso`
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To run it with QEMU, `make run`
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## TODO
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The basics that I'm targeting are:
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### Basic utility of what we call a "kernel"
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- Fix terminal driver (backspace issues, scrolling) OR add Flanterm or equivalent
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- Implement tasks, and task switching + context switching and spinlock acquire/release
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- Load an executable
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- Filesystem (TAR for read-only initfs, then maybe read-write using FAT12/16/32 or easier fs) w/ VFS layer
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- Getting to userspace (syscalls)
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- Porting musl libc or equivalent
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### Scalability/maintenance/expansion features
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- Global config header file
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- Documentation
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- SOME error handling in functions
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- Unit tests
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- Good error codes (like Linux kernel: ENOMEM, ENOENT, ...)
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- Make the panic function work within itself without dependencies + error message (and still get cpu context?)
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### Optional features
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In the future, maybe?
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- SMP support (Limine provides functionality to make this easier)
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- Parsing the ACPI tables and using them for something
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- Replacing the PIT timer with APIC
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## Thanks
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PepperOS wouldn't be possible without the following freely-licensed software:
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- the [Limine](https://codeberg.org/Limine/Limine) portable bootloader
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- Marco Paland's freestanding [printf implementation](https://github.com/mpaland)
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- the [ZAP](https://www.zap.org.au/projects/console-fonts-zap/) PSF console fonts
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...and without these amazing resources:
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- the [OSDev](https://osdev.org) wiki & forums
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