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⚡️ An OS targeting raspberry pi 3b
License: MIT License
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osc's Issues
Add bootloader target in makefile
Write a dtb parser using Python
Startup allocator in C
[Shell] Allow trailing spaces
input:
" aa "
" aa"
"aa <\t>"
should be seen as aa
Check if I could include standard libraries that without system-call
- Doesn't the meaning of
-nostdliband-freestandoverlap? - Could I use
<stddef.h>? Cuz it contains only definition
Add rust version for lab1
Add CI for generating System Image File
Key concepts to understand
- why setting stack-top to the address of the kernel entry point
Write a bootloader using Rust
[Shell] support arrow keys
Feature list
Lab4
| feature | impl-c | impl-rs |
|---|---|---|
| el2→ el1 | ✅ | ❌ |
| vector table & exception handling | ✅ | ❌ |
| el0 timer interrupt | ✅ | ❌ |
| --elective-- | -- | -- |
| Async UART | ❌ | ❌ |
| Timer multiplexing | ❌ | ❌ |
| Task queue for bottom-half exception handler | ❌ | ❌ |
| Task queue for bottom-half exception handler | ❌ | ❌ |
| Nested interrupt | ❌ | ❌ |
| Task queue preemption | ❌ | ❌ |
Lab3
| feature | impl-c | impl-rs |
|---|---|---|
| buddy system | ✅ | ❌ |
| slab allocator | ✅ | ❌ |
| startup allocator | ✅ | ❌ |
p.s.
for impl-c
- slab allocator currently use a simplified version
- startup allocator does not impl. alloc interface, hence the space used by buddy system is statically allocated
Lab2
ps. implement bootloader with c
| feature | impl-c | impl-rs |
|---|---|---|
| cpio reader | ✅ | ❌ |
| dtb parsing | ❌ | ❌ |
Lab1
| feature | impl-c | impl-rs |
|---|---|---|
| uart init | ✅ | ✅ |
| basic shell | ✅ | ✅ |
| shell with cursor support | ✅ | ❌ |
Add clang-format script
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