Secure Data Storage

Example for Secure Data Storage

This solution shall meet the following main goals:

Usable in Safety Product

We want to get a solution, which is usable in safety products

Secure Data Storage

We want to encapsulate the data storage access driver and control the accessing modules.

Identity Management

We want to get a tiny identity management for all components of the product, which needs access to the data storage.

Furthermore, the solution shall meet some high-level business goals:

Space Protection Mechanism

We want to use mixed safety capabilities on a single microcontroller.

LTS for complete Platform

We want to have a long-term supported (LTS) safety platform.

Building Blocks

Flexible Safety RTOS

The Flexible Safety RTOS provides a deterministic hard real-time scheduling and is responsible for:

Scheduling application tasks

Managing task separation

Task synchronization services

Task communication services

Component Tailoring

With the component tailoring service, the system is enhanced with the features:

Access Permission: No-Access

Tiny Identity Management

Long-Term Maintenance

Micrium Filesystem

The Micrium filesystem is build with all special embedded system requirements in mind:

Power-Failsafe by Journaling

Wide Range of Storage Media

Small Footprint in RAM and ROM

Architectural Overview

Architectural Overview of Secure Data Storage

Architectural Overview of Secure Data Storage

Description

This usage scenario provides a safety RTOS with managed memory protection for separating the filesystem. With a small tailoring to achieve the memory permission “no-access”, this system allows secure data storage in files. Note: The managed memory protection allows the usage of this system design in safety systems.

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Customer References

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Application Note: Secure Data Storage

Related Links

Learn more about the Micrium filesystem

Learn more about the pre-certified safety RTOS

Learn more about the component tailoring service

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