Hardware Sovereignty and RISC-V in the Global South: A Response to Dmitry Grinberg

If you sit in a co-working space in Silicon Valley or a well-funded university lab in Western Europe, hardware accessibility is something you rarely have to think about. If you need an evaluation board, you open a browser, click order, and it arrives on your desk the next morning, often with free shipping. When you are developing embedded systems from the Global South—say, Trinidad and Tobago—the physical reality of engineering looks entirely different.

Here, a nominal $2 microcontroller or development board can easily incur shipping fees ranging from US $60 to US $200. Add customs clearance delays, heavy import duties, and unpredictable courier services, and prototyping ceases to be an iterative, fast-paced design process. It becomes a high-stakes logistical challenge. When every single chip you import carries a severe financial penalty, your tolerance for proprietary gatekeeping, arbitrary licensing walls, and locked-down ecosystems drops to absolute zero.

This economic and geographic reality frames how we must look at recent critiques of open-source silicon. Prominent developer and hardware hacker Dmitry Grinberg has frequently offered pointed, academic critiques of RISC-V, targeting its instruction set architecture (ISA) encoding quirks, perceived instruction set bloat, and fragmentation. From a purely aesthetic computer architecture standpoint, these arguments dissect the elegance of the instruction set. But when viewed from a region where hardware access is heavily restricted by logistics and licensing, those academic grievances miss the forest for the trees.

To understand why RISC-V matters so profoundly, we need to look past theoretical instruction encoding and examine the real-world economics of accessibility, engineering freedom, and hardware sovereignty.

Deconstructing the Critique: Architecture vs. Accessibility

To appreciate the debate, it helps to understand what critics like Grinberg point out. From a traditional design perspective, RISC-V has accumulated a vast ecosystem of extensions. A core is rarely just “RISC-V”; it is RV32IMAC or RV64GC, packing compressed instructions (C), atomic operations (A), floating-point support (F/D), and vector extensions (V). Critics argue that this modularity leads to fragmentation, making it difficult to write truly portable software without relying on heavy abstraction layers. Furthermore, specific instruction encoding choices—such as how immediate values are scattered across instruction words to keep decoder logic uniform—are occasionally flagged as inelegant or inefficient compared to older, tightly integrated ISAs.

While these technical grievances have merit in a vacuum, they evaluate an architecture through the lens of academic perfection rather than practical utility. A slightly awkward immediate encoding scheme or a proliferation of optional extensions is a minor tax to pay when the alternative is an instruction set locked behind expensive legal teams and restrictive commercial agreements.

Idealized computer architecture theory assumes a level playing field where any engineer can license any IP block, spin up a custom chip, and manufacture it without friction. In the real world, the vast majority of the planet operates under severe financial, logistical, and geopolitical constraints. For an engineer working outside major tech hubs, an “inelegant” instruction set that you can freely study, modify, synthesize onto an FPGA, or buy for pennies without signing a Non-Disclosure Agreement is infinitely more valuable than a pristine, mathematically harmonious ISA that you are legally barred from implementing.

The Economics of Silicon: Licensing Walls vs. Open Standards

The friction of proprietary architectures goes far beyond instruction encoding; it is rooted in business models designed to protect corporate moats. Consider the commercial ARM ecosystem. ARM’s business model relies on rigid product boundaries enforced by licensing tiers. If you want to design a simple microcontroller for edge sensing, you license a Cortex-M core. If your project evolves and you need to run a full operating system with virtual memory, you must step up to a Cortex-A application processor.

Crossing these boundaries isn’t just an engineering task; it requires renegotiating contracts, paying additional license fees, and dealing with entirely separate software development toolchains, debugging probes, and intellectual property audits.

Proprietary IP blocks carry immense financial and legal overhead. Before a startup or a university research lab can even synthesize a commercial core, they must navigate months of legal negotiations, sign NDAs, and commit to upfront royalties or licensing fees. This creates a chilling effect on innovation. Small teams cannot afford to experiment wildly when every architectural pivot requires clearing a corporate legal hurdle.

RISC-V completely upends this dynamic through its modular nature. The base ISA is unencumbered by patents or licensing fees. Optional features—such as Memory Management Units (MMUs), floating-point units, or custom task-specific accelerators—are modular architectural checkboxes rather than commercial upgrade paths.

[RISC-V Base ISA: RV32I / RV64I]
         │
         ├── Optional Extension: [M] (Integer Multiplication/Division)
         ├── Optional Extension: [A] (Atomic Instructions)
         ├── Optional Extension: [F/D] (Floating-Point Support)
         ├── Optional Extension: [C] (Compressed Instructions)
         └── Optional Extension: [MMU / Privileged Modes] (Application Processor Profile)

An engineer can start with a bare-metal microcontroller core running simple tasks, scale up the instruction set extensions as requirements grow, and eventually incorporate an MMU to run multi-process operating systems like seL4 or Linux—all using the same foundational instruction set architecture. There are no gatekeepers demanding revenue shares, and no legal departments restricting who can download the specification PDF.

Practical Engineering in Resource-Constrained Environments

The true proof of an architecture’s worth is found when it hits the workbench. In resource-constrained environments where every single component counts, low-cost silicon changes what is possible for education, rapid prototyping, and deployment.

A striking example of this shift is the CH32V003, a microcontroller that has quietly revolutionized low-cost embedded design. Produced by WCH (Jiangsu QinHeng Microelectronics), this chip is a 10-cent RISC-V microcontroller built on an RV32EC core.

Inside the CH32V003

• Core Architecture: QingKe V3F (RISC-V RV32EC)
• Registers: 16 general-purpose registers
• Memory: 2KB SRAM
• Storage: 16KB Flash memory
• Cost: Approximately $0.10 USD in single-unit or small-batch quantities

To put this into perspective, engineers in the Global South no longer need to cannibalize old hardware or hoard a single precious development board for fear of breaking it. For the price of a single cup of coffee, you can order a handful of CH32V003 chips, design a custom breakout board, and solder it by hand.

// A minimal bare-metal C example for the CH32V003 (RV32EC)
// Configuring a GPIO pin toggle for basic debugging

#include <ch32v003.h>

#define LED_PIN (1 << 0) // Assuming PC0

void delay_cycles(volatile uint32_t n) {
    while (n--) {
        __asm__("nop");
    }
}

int main(void) {
    // Enable GPIOC clock
    RCC->APB2PCENR |= RCC_APB2Periph_GPIOC;

    // Set PC0 to Push-Pull Output, max speed 10MHz
    GPIOC->CFGLR &= ~(0x0F << (4 * 0));
    GPIOC->CFGLR |=  (0x03 << (4 * 0));

    while (1) {
        GPIOC->BSHR = LED_PIN;   // Turn LED on
        delay_cycles(500000);
        GPIOC->BCR = LED_PIN;    // Turn LED off
        delay_cycles(500000);
    }
}

Working with unrestrictive tooling further empowers this ecosystem. Because the toolchain (GCC and LLVM ports for RISC-V) is entirely open-source, developers are not locked into proprietary integrated development environments (IDEs) that require expensive dongles, hardware license keys, or constant internet connectivity for license validation. You can write your firmware in a text editor, compile it with an open-source toolchain, and flash it using a cheap USB-based programmer.

This lowers the barrier to entry for students, hobbyists, and professional engineers alike, fostering a culture of tinkering and deep systems understanding that proprietary ecosystems often discourage through obfuscation.

Hardware Sovereignty and Global Geopolitics

When we zoom out from individual development boards to national infrastructure, the conversation shifts from convenience to survival. Modern semiconductor supply chains are notoriously fragile, concentrated in a handful of geographical choke points and vulnerable to sudden trade restrictions, export controls, and geopolitical friction.

As explored in our analysis of the chip wars and global supply chains, developing nations face acute vulnerabilities when critical hardware components are abruptly restricted or embargoed. Import duties, shifting trade policies, and foreign corporate roadmaps can paralyze local industries overnight. If your entire technological infrastructure depends on proprietary silicon designed abroad, your domestic innovation capacity is effectively capped by foreign policy decisions.

Furthermore, regulatory mandates in major markets frequently ripple outward, altering the global availability of components. For instance, recent policy shifts, such as those detailed in our report on the FCC ban on foreign robotics and power inverters, demonstrate how rapidly regulatory compliance can upend established hardware supply chains.

In this climate, hardware sovereignty becomes a critical strategic goal. Open-source hardware and open ISAs provide a path to technological independence. When the instruction set is public domain, no single corporation or foreign government can revoke your right to manufacture, modify, or audit the silicon.

Nations and regional engineering communities across the Global South can foster local innovation ecosystems without paying licensing tolls to foreign entities. Universities can design custom accelerators tailored to local agricultural, energy, or telecommunications needs, and send those designs directly to semiconductor foundries without asking permission from a licensing board in Silicon Valley or Cambridge.

Future Outlook: The Unstoppable Momentum of Open Silicon

The criticisms leveled against RISC-V by architectural purists often frame the debate around temporary growing pains. Every major instruction set in history—including x86 and ARM—went through decades of evolution, extension additions, and pragmatic compromises.

Today, RISC-V is rapidly solidifying its dominance in the low-cost, single-use microcontroller market. From ultra-low-power IoT sensors to complex system-on-chips running sophisticated microkernels like Xous and seL4, the architecture is proving its versatility across the entire compute spectrum.

More importantly, it provides a seamless upward-scaling path for engineers globally. An engineer who cuts their teeth on a 10-cent RISC-V microcontroller can scale their knowledge directly up to multi-core application processors without hitting proprietary licensing walls or relearning entirely foreign tooling paradigms.

The democratization of hardware is no longer an idealistic talking point; it is a technical and economic inevitability driven by open standards. By stripping away licensing fees, geographical delivery barriers, and corporate gatekeepers, RISC-V and open-source silicon are handing the keys of innovation back to engineers—wherever they happen to sit in the world.