ProtoType Operating System(PT-OS)
This is a simple Operating System, Which implements some useful component. All componnet of PT-OS is just ProtoType, and that is origin of its name. When you have some intersting ideas, and you can implement them in PT-OS. And I think it will reduce the waste of time.
I gave detailed comments in code and design ideas in /doc/ dir. And all of them is wrote in chinese.
PTOS target
These are the target that I want to do.
Multi-Core
- single Intel core (It's working)
- two same Intel cores (In the future)
- two Intel cores with different frequency (In the future)
- single RISC-V 32 core (In the future)
There is a problems that the Hardware-Platform is based on Intel, and I want to transplant it to other platforms in the future. Recently I am building a SOC based on RISC-V ISA, so this maybe a new direction.
Memory Management
- physical page management (It's testing)
- Fine-grained memory management (In the future)
The detailed information about memory will be showed
Task Management
- ELF program load (It's doing)
- Kernel process and thread (In the future)
- User process and thread (In the future)
- Simple priority scheduling (In the future)
- CFS scheduling (In the future, and it needs a long time)
- EAS scheduling (In the future, and it needs a long time)
Interrupt and Timer Management
- Interrupt controler based on 8258A (It's working)
- Timer based on 8253 (It's working)
Debug and Error Handling
- Debug port
- Error Handling module
Developing Environment
Platform and ToolChain
- Linuxmint 17.3/18.3
- GNU gcc 5.4
- GNU ld 2.26.1
- GNU Make 4.1
- bochs 2.6.9
If I build the RISC-V SOC successfully, and the "vivado" will be added in tools.
Compile Bochs
Fisrt step, you should download "bochs-2.6.9.tar.gz" from Bochs Website
Second step, you should install some package to solve dependency.
sudo apt-get install gcc g++ build-essential xorg-xdev
xserver-xorg-dev libgtk2.0-dev bochs-sdl
Third step, you should configure bochs in bochs_dir.
./configure --enable-debugger --enable-disasm --enable-iodebug
--enable-x86-debugger --with-x --with-x11
Final step, you should compile bochs in bochs_dir.
make -j8
这是我自己在推进的一个简易的操作系统，算是一个理论到实践的过程。
目前才刚开始一部分，基本每周都会推进，有兴趣的可以进行交流。