This is a simple RISC-V microkernel built from scratch, written in Rust.
- Microkernel Architecture (Process Manager in U-mode)
- Virtual Memory with SV39
- Bash-like Shell
Run the following commands to build and test the kernel:
$ git clone git@github.com:HenryHe0123/ACore.git
$ cd ACore/os
$ make runThen you can see the initial output of the OS:
___ ___ ____ ____ _______ ______ __
| \/ | \ \ / / / || _ \ | |
| \ / | \ \/ / | (----`| |_) | | |
| |\/| | \_ _/ \ \ | _ < | |
| | | | | | .----) | | |_) | | |
|__| |__| |__| |_______/ |______/ |__|
[mysbi] Hello, kernel!
[kernel] .text [0x80000000, 0x8000f000)
[kernel] .rodata [0x8000f000, 0x80013000)
[kernel] .data [0x80013000, 0x80162000)
[kernel] .bss [0x80162000, 0x80473000)
[kernel] mapping .text section
[kernel] mapping .rodata section
[kernel] mapping .data section
[kernel] mapping .bss section
[kernel] mapping physical memory
[kernel] mapping MMIO
[kernel] Hello, MMU!
[kernel] ----- APPS -----
[kernel] exit
[kernel] fantastic_text
[kernel] forkexec
[kernel] forktest
[kernel] forktest2
[kernel] forktest_simple
[kernel] forktree
[kernel] hello_world
[kernel] matrix
[kernel] sleep
[kernel] sleep_simple
[kernel] stack_overflow
[kernel] usertests
[kernel] usertests-simple
[kernel] yield
[kernel] ----------------
[initproc] Start running.
[process manager] Start running.
Welcome to Shell!
root@ACore:/#
The supported applications are listed above. You can use the built-in ls command to display them again. To run an application, just type its name and press Enter. usertests can run a bunch of applications, thus it is recommended.
There are several ways to exit the OS. You can gracefully shut down by typing shutdown in the shell and pressing Enter. Or you can type Ctrl+a then x to terminate Qemu. We also support using Ctrl+c to terminate the shell and then exit the system.