KronOS is a lightweight Unix-like kernel writen in C and ASM.
This is the result of the KFS projects available at School 42.
The kernel is currently not finished.
Use it only for testing purposes.
It lacks many features but I try to improve it as I go along.
- GCC (https://gcc.gnu.org/)
- CLANG (https://clang.llvm.org/)
- KVM (https://www.linux-kvm.org/)
- QEMU (https://qemu.org/)
- CCACHE (https://github.com/ccache/ccache)
- Clone Kernel Repository
git clone https://github.com/vvaucoul/KronOS && cd KronOS- Install dependencies
make install-dependencies- Compiling Kernel
make - Start the Kernel with one of the following commands:
make run / make run-iso / make run-sdl / make run-curses / make run-debug- KFS-1 : Grub / Boot and Screen
- KFS-2 : GDT & Stack
- KFS-3 : Memory
- KFS-4 : Interrupts
- KFS-5 : Processes -----------> waiting for validation
- KFS-6 : Filesystem -----------> in progress
- KFS-7 : Syscalls, Sockets & env
- KFS-8 : Kernel Modules
- KFS-9 : ELF Parser
- KFS-X : Complete Unix System
- Basic Kernel System
- Boot via Grub 2 and Multiboot 1
- Kernel Library with basics functions and types (cf. HEPHAISTOS)
- PS/2 Keyboard Support
- VGA text Driver
- GDT implementation
- Interrupts and IRQs support
- A Complete Memory system
- Paging
- Physical and Virtual Memory
- Multi-Tasking System
- Round Robin
- Threads
- Concurrent access
- Mutexes
- Semaphores
- Bios interactions
- Some syscall done
graph TD;
BIOS-->GRUB
GRUB-->BOOT_LOADER
BOOT_LOADER-->MAGIC_NUMBER
BOOT_LOADER-->MULTIBOOT_HEADER
MAGIC_NUMBER-->KERNEL
MULTIBOOT_HEADER-->KERNEL
When the kernel is launched, it will initialize each element and test them to validate the kernel launch correctly.
Otherwise, a pretty red death screen will appear or a simple kernel panic.
This one can be managed by the kerrno library created to detect kernel errors for each element.
RSOD and Kerrno / Kernel Panic both use C and ASM.
BSOD Like (Red Screen Of Death)
flowchart LR
KERNEL --> Initialization --> Start --> ShellMode
Initialization --> Error --> Panic & RSOD
Panic Examples:
🚧 ... Next redaction pending ...🚧