History

Morello

Morello was Arm's experimental architecture, SoC and development board integrating CHERI concepts with an Armv8-A baseline.

For
All audiences, especially policy, industry and research
Last reviewed
2026-08-05
Review cycle
Review every 6 months

Why it matters

The platform enabled researchers and developers to run rich operating-system stacks and realistic applications on CHERI-capable silicon.

In brief

What was the Morello platform and what did it demonstrate?

Morello was Arm’s experimental architecture, SoC and development board integrating CHERI concepts with an Armv8-A baseline. It provided a high-performance prototype for large-scale software and security evaluation, not a production Arm architecture.

Key considerations

1. Architecture

Arm and research partners defined a prototype capability extension and associated models.

2. Platform

The programme delivered a CPU, SoC, board, firmware, tools and system software.

3. Learning

Morello exposed compatibility, performance, operating-system and application questions at a scale beyond earlier prototypes.

Evidence and caveats

Results on Morello reflect a prototype microarchitecture and software environment; they should not be treated as product commitments or universal CHERI performance.

Use dated primary project, funder and provider records. Separate what was planned, demonstrated and subsequently delivered.

Primary routes

Where next

Use Morello evidence to frame questions, then verify which current platform best supports the next experiment.

See the Morello platform route