Sparrow is a project to build a low-power secure embedded platform for Ambient ML applications. The target platform leverages RISC-V and OpenTitan.
The Sparrow software includes a home-grown operating system named CantripOS, that runs on top of seL4 and (ignoring the seL4 kernel) is written almost entirely in Rust. CantripOS is comprised of a set of system services that are assembled using CAmkES and applications that are dynamically loaded into a constrained seL4 thread context and communicate with system services through an SDK runtime environment.
The CAmkES project that assembles the CantripOS system services is found in this git repository. It exists outside the seL4 source trees since it contains code not intended to go to upstream seL4.
The target-platform-dependent CAmkES assembly description is found in apps/system/platforms. It is built using the standard CAmkES build system and requires the CAmkES dependencies already be installed. Top-level configuration is found in easy-settings.cmake and settings.cmake with build-related configuration in build/cantrip.mk and nearby makefiles.
The following sections provide more in-depth documentation:
CantripOS software organization
Target architecture dependencies
CantripOS capDL rootserver application
Depending on CantripOS Rust crates
Every file containing source code includes copyright and license information. For dependent / non-Google code these are inherited from the upstream repositories. If there are Google modifications you may find the Google Apache license found below.
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