RustOS

This OS started as a class project for CS 3210 at Georgia Tech, but I have continued developing new features.

Class Pieces:

• Bootloader
• GPIO
• UART Shell
• FAT32
• Exception Handlers
• Preemptive Scheduling
• Virtual Memory Management
• Loading user-space processes

Pieces I developed:

• Multi-core support (boot the other 3 cores on the RPi 3)*
• Suspend/Resume, process affinity, process scheduling statistics
• Ethernet (using USPi)*
• Custom network stack including ARP, IPv4, TCP and ICMP echo
• Telnet Shell
• Interface to the RPi DMA devices
• Initializing the frame buffer and mirroring shell to screen
• Hypervisor using the ARMv8 virtualization exception level
• Virtualized interrupt controllers timers, and UART for the hypervisor guests
• Virtualized NIC and fork of USPi that enables pass-through of MAC addresses so that hypervisor guests can act as different network devices
• Lock registry to enable runtime inspection of locks and statistics tracking
• Timer-based profiling of kernel/hypervisor and guest
• Symbolification of kernel/hypervisor when viewing profiling results by processing DWARF symbols using gimli
• (very early stages) Support for Khadas VIM3, a Pi-like board but much more powerful

* Items with an asterisk were added to the CS 3210 course curriculum after I had added the features

Building

Cap'n Proto is required for lib/tracing. On Ubuntu, this can be installed with apt install capnproto libcapnp-dev.

The build scripts use elftools which can be installed with pip install pyelftools.

kern/set-nightly.sh will configure rustup to use an appropriate nightly for this project.