"The debate about RISC-V has gone far beyond processor architectures"

The debate surrounding RISC-V has long since transcended the realm of processor architectures. What began as a discussion about Open Instruction Set Architecture (Instruction Set ArchitecturesISA) has become a much more fundamental question: who will define in the future the platform layer on which the software ecosystems of the next generation of vehicles will be built, and will such platforms be able to reliably meet the demanding security and real-time requirements of critical systems?

Software-defined vehicles are transforming the logic of automotive architecture

The automotive industry is currently undergoing a profound structural transformation. The transition to the software-defined vehicle (Software-Defined Vehicle (for its acronym in English) is not only modifying the technical architecture of modern automobiles; it is also redefining development models, integration strategies, and the role of software throughout the entire value chain.

For decades, vehicle development relied on largely decentralized electronic control unit (ECU) architectures, where different functions were assigned to clearly defined hardware domains and hardware and software remained tightly coupled. However, this model is increasingly reaching its limits. As software complexity increases, so do the demands for scalability, reusability, and continuous evolution of vehicle functions throughout extended product lifecycles.

As a result, hardware is evolving toward a long-term software foundation. The key issue is no longer limited to the performance of individual chips, but focuses on the flexibility and manageability of entire platform architectures. Aspects such as software portability, standardized interfaces, and interoperable development environments are becoming increasingly important.

At the same time, demands for functional safety, real-time capabilities, and system validation continue to increase. Unlike consumer applications, automotive platforms must reliably, deterministically, and verifiably support critical functions over long periods of operation. In the software-defined vehicle, this creates a significant need for coordination among the hardware, software, and development tool ecosystems (toolchains).

Why open architectures are gaining strategic relevance

In this context, RISC-V is gaining increasing strategic importance. Open ISAs allow companies to develop and customize processor solutions with significantly greater flexibility. At the same time, this open approach offers the possibility of reducing reliance on proprietary platform models and regaining technological flexibility.

For the European automotive industry, in particular, this evolution has considerable strategic significance. The more software-centric vehicles become, the more important it is to determine who will retain the ability to influence the platforms on which the software of future vehicles will run—an area where open, industrially managed architectures offer a concrete path forward.

Openness fosters innovation, but does not guarantee compatibility

Open platforms undoubtedly generate a remarkable dynamic of innovation. However, openness alone does not guarantee the existence of a coherent industrial ecosystem. While divergent extensions or incompatible software stacks primarily pose drawbacks in consumer markets, in the automotive environment they quickly become risks to the certification, maintenance, and long-term management of complex systems.

The long life cycles of vehicles require stable and portable software platforms, and for this an open ISA alone is not enough.

The real challenge lies not so much in the openness of architecture as in the ability to build, from it, solid and sustainable long-term industrial platform structures.

Competition shifts from the processor to the ecosystem

As a result, the competitive landscape is also changing. The success of future automotive platforms will likely depend less on individual processor cores than on the quality of the surrounding ecosystem: compatible development tools, stable software environments, standardized interfaces, and the ability to efficiently validate and certify increasingly complex systems.

This gap is precisely what RT-Europa, the real-time reference platform developed by Quintauris, addresses. RT-Europa extends the RISC-V ISA profile approach by providing a complete architectural foundation for critical real-time automotive applications. Its features include deterministic memory access with maximum latency (worst-case latency) statically bounded, Physical Memory Protection (PMP) for secure software domain isolation, standardized interrupt management, separation of privilege levels, and debugging and traceability interfaces (debugging y trace) that do not compromise the deterministic behavior of the system.

The defined configuration classes —Minimum, Medium y Maximum— allow RTOS providers, developers of toolchains and SoC integrators align on a common technical basis without giving up their differentiating capabilities.

Why even competitors are starting to collaborate

The structure of Quintauris itself is also noteworthy. Companies such as Bosch, Infineon, Nordic Semiconductor, NXP, STMicroelectronics, and Qualcomm—direct competitors in numerous markets—recognized that certain platform-level challenges are better addressed through an independent, shared body, Quintauris, than in parallel isolation. This configuration highlights the extent to which the dynamics associated with software-defined vehicles are changing.

Aspects such as interoperability, functional safety, and toolchains Platform standards can no longer be addressed in isolation. Instead, a new concept of industrial collaboration is emerging, in which certain fundamental elements must be developed jointly to subsequently enable differentiating innovation.

As a result, the platform concept is gaining increasing relevance within the automotive semiconductor industry.

The question is no longer whether open architectures will prevail, but who will define the platform

Therefore, the long-term success of RISC-V in the automotive industry will likely not be measured primarily by the number of processor cores deployed. What will truly be decisive is whether interoperable, industrially ready, and sustainable platform ecosystems emerge, capable of meeting the real demands of software-defined vehicles.

Only if the software remains portable, development efforts remain under control, and collaboration between the various market players is efficient, will RISC-V be able to unleash its full potential in the automotive field.

Therefore, the question of who defines the platform layer for RISC-V in automotive is no longer an abstraction. With RT-Europe, Quintauris has formulated a concrete and neutral answer for manufacturers: a specification developed by key industry players, validated across various IP and software configurations, and conceived as the common foundation for the next generation of automotive real-time systems.