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All Projects → himanshugoel2797 → Cardinal

himanshugoel2797 / Cardinal

Licence: other
Operating system designed to be fast and secure.

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Cardinal

Cardinal is a hobbyist Operating System designed to be elegant. It takes heavy inspiration from Plan 9 and related OS's.

This repository contains the kernel, userspace build configurations, patches and scripts that are needed to build a working image.

Project Status

The project is currently in active development. Join us at #Cardinal-OS on Freenode ( irc.freenode.net ) to keep up with development.

Kernel

The kernel is a mostly complete microkernel. As a result it is fairly small. It responsible for little more than task switching, memory management and interprocess communication.

Userspace

The userspace of Cardinal is currently in development. It consists of the drivers, servers and user applications. The userspace is divided into 3 rings by the kernel with lower numbered rings having higher privileges.

Ring 0, abbreviated as R0 has near kernel level syscall permissions, this is where the services most core to the system are situated.

The drivers are situated in Ring 1 or R1. This ring has a more restrictions on which syscalls are available to an application.

All other applications run in Ring 2 or R2. This ring has the most restrictions, only allowing applications to make syscalls for shared memory and IPC.

Ports

Currently the following have been ported to the OS:

  • OpenSSL
  • zlib
  • libpng

Supported Hardware

Currently available device drivers:

  • Intel HD Audio (WIP)
  • VESA Framebuffer (WIP)
  • AHCI (WIP - Read Only)
  • VMWare SVGA (WIP - Needs an interface)
  • RTL8139 (WIP - Needs an interface)
  • USB UHCI (WIP - Initialization only)

Build Instructions

Execute the scripts/build-os.sh script in the source directory.

IRC

Join us at #Cardinal-OS on Freenode ( irc.freenode.net ).

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