3. Link with ISO 26262 Requirements¶

[ISO-26262:2018] requirements describe three steps for Software Tool Qualification:

1. Planning of usage (Part 8 - Section 11.4.4)

2. Evaluation of a software tool by analysis (Part 8 - Section 11.4.5)

3. Qualification of a software tool (Part 8 - Sections 11.4.6, 11.4.7, 11.4.8, 11.4.9)

Though this is not the first Ferrocene qualification, Part 8 - Section 11.4.7 is not yet considered applicable, as there is no data collected of its use.

In addition, Ferrocene follows an open source development model. Nevertheless, Ferrocene is the qualified version of the open source Rust toolchain, and will therefore follow a development process in accordance to 11.4.8.

In order to respect these three steps, we’ll manage five documents:

• Ferrocene Evaluation Plan

• Ferrocene Evaluation Report

• Ferrocene Qualification Plan

• Ferrocene Qualification Report

• Ferrocene Safety Manual

The Ferrocene Evaluation Plan (this document) and Ferrocene Evaluation Report, describe all phases for the Tool Confidence Level classification (Step 2: Evaluation of a software tool by analysis):

• Presentation of how we evaluate the confidence level.

• Analysis of potential errors with the assessment of the tool impact and the tool error detection probability.

• Definition of the qualification method to ensure that there are no potential errors without mitigation or detection means.

• Test suites description.

The Ferrocene Qualification Plan describes how the tool is qualified (Step 3: qualification of a software tool):

• Tool description and architecture.

• Who is responsible for this qualification.

• Development process.

• Validation process.

The Ferrocene Qualification Report describes the result of the tool validation (Step 3: qualification of a software tool):

• Tool identification (version/name).

• Environments.

• Configuration data.

• Qualification results (Test Reports, etc.).

• Usage Constraints or errors identified in the course of this qualification, with mitigations.

The Ferrocene Safety Manual describes the usage, constraints, and limitations of the tool according to this qualification (Step 1: Planning of usage + some result from Step 2):

• List of the potential errors with mitigations or workarounds.

• Description of the tool usage and other information (configuration data, environment, etc.).