The Little Kernel Embedded Operating System

The LK kernel is an SMP-aware kernel designed for small systems ported to a variety of platforms and cpu architectures.

See https://github.com/littlekernel/lk for the latest version.

High Level Features

Fully-reentrant multi-threaded preemptive kernel
Portable to many 32 and 64 bit architectures
Support for wide variety of embedded and larger platforms
Powerful modular build system
Large number of utility components selectable at build time

Supported architectures

ARM32
- Cortex-M class cores (armv6m - armv8m)
- ARMv7+ Cortex-A class cores
ARM64
RISC-V 32 and 64bit bit in machine and supervisor mode
x86-32 and x86-64 386 up through modern cores
microblaze
MIPS
OpenRISC 1000

TODO

To build and test for ARM on linux

install or build qemu. v2.4 and above is recommended.
install gcc for embedded arm (see note 1)
run scripts/do-qemuarm (from the lk directory)
you should see 'welcome to lk/MP'

This will get you a interactive prompt into LK which is running in qemu arm machine 'virt' emulation. type 'help' for commands.

Note: for ubuntu x86-64: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from https://newos.org/toolchains/x86_64-elf-10.2.0-Linux-x86_64.tar.xz