FFI ensures safety-critical elements remain unaffected by lower-integrity components through temporal, spatial, communication, and data partitioning per ISO 26262-6 and -9. Covers memory protection units (MPU), hypervisors, time-triggered scheduling, bus monitoring, and software architectural measures. Includes analysis techniques for demonstrating independence, practical partitioning strategies for multi-core processors and AUTOSAR platforms, and evidence generation for assessments.
Freedom From Interference (FFI)
Ensures elements of different ASIL/integrity levels do not adversely affect each other via time, space, control, or data. Includes partitioning strategies and practical evidence-generation.