stmos

stmos is an operating system for STM microprocessors. It aims to support (or be able to support) all STM Cortex-M processors.

Features:

• Unprivileged code execution
• ELF loading and execution (loads an init from the initrd)
• Near-full C standard library support for loaded ELFs
• libgpio: GPIO access for loaded ELFs

Currently supported processors:

• STM32L476RG (board: NUCLEO-L476RG)

building

To build stmos, you'll need the following programs:

• The arm-stmos toolchain (see the arm-stmos folder)
• openocd
• gdb (with multiarch support)

To compile stmos simply run make (-j option supported). To upload, use run.sh to start openocd/gdb; do lo to load stmos, and c to run it.