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https://github.com/BugenZhao/litchi-rs
An x86-64 kernel with ~100% Rust (originally) in a week. `async` inside!
https://github.com/BugenZhao/litchi-rs
kernel osdev rust-osdev x86-64
Last synced: 1 day ago
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An x86-64 kernel with ~100% Rust (originally) in a week. `async` inside!
- Host: GitHub
- URL: https://github.com/BugenZhao/litchi-rs
- Owner: BugenZhao
- License: mit
- Created: 2022-03-21T18:34:50.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2022-05-08T16:26:34.000Z (over 2 years ago)
- Last Synced: 2024-11-10T21:12:09.283Z (2 days ago)
- Topics: kernel, osdev, rust-osdev, x86-64
- Language: Rust
- Homepage:
- Size: 184 KB
- Stars: 53
- Watchers: 2
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# litchi-rs
An x86-64 kernel with ~100% Rust (originally) in a week. The continuation of [Litchi](https://github.com/BugenZhao/Litchi).
## Try it
Make sure the Rust toolchains and `qemu-system-x86_64` are installed, then simply execute...
```bash
make qemu PROFILE=release
```
## Roadmap
### Booting
- [x] Bare-metal UEFI application.
- [x] In-memory ELF program loader.
- [x] Locate kernel executable with UEFI's simple file system.
- [x] Jump into the kernel.
- [x] Prepare `BootInfo` and pass to the kernel.
- [ ] ...
### Kernel Initializations
- [x] Serial logger.
- [x] Global Descriptor Table & Task State Segment.
- [x] Physical frame allocator, based on the boot info.
- [x] Kernel page table.
- [x] Kernel heap allocation & `extern crate alloc`.
- [x] Resolve ACPI table for interrupts & multiprocessors.
- [x] Trap handlers for critical faults.
- [x] Local APIC for the timer interrupt.
- [x] IO APIC for the UART serial.
- [ ] Bootstrap application processors.
- [ ] ...
### User Tasks
- [x] Load embedded ELF user programs.
- [x] RAII-style user memory allocator and mapper.
- [x] User library to provide init code.
- [x] Switch to user mode.
- [x] Frame-preserving timer interrupt handler for preemption.
- [x] Round-robin task scheduler.
- [x] System calls with shared memory.
- [x] User heap allocator.
- [x] Task recycling.
- [x] Idle task with kernel privilege.
- [x] Basic priority-based scheduler.
- [x] File or device resource management.
- [x] Blocking system calls.
- [x] A basic userspace shell.
- [ ] Task spawning and forking.
- [ ] Synchronization primitives.
- [ ] Asynchronous IO.
- [ ] ...
### Other Kernel Functionalities
- [x] Event-driven UART serial input handler.
- [x] Kernel task with async Rust!
- [ ] Multiprocessors.
- [ ] Simple file systems.
- [ ] IPC mechanisms.
- [ ] ...
## References
- https://os.phil-opp.com
- https://github.com/BugenZhao/Litchi
- https://github.com/alesharik/distros
- https://github.com/rcore-os/rboot
- https://github.com/rcore-os/trapframe-rs
- https://osdev.org
- https://pdos.csail.mit.edu/6.828/2018/schedule.html
- ...