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Privileged CSR

Concept WIKI v1 · 5/26/2026

Privileged CSR is represented in the available evidence as a supported verification focus in RISCV-DV, an SV/UVM-based open-source RISC-V instruction generator. RISCV-DV includes both privileged CSR setup randomization and a privileged CSR test suite.

Overview

In the available evidence, Privileged CSR appears as a verification-related concept within RISCV-DV, an SV/UVM-based open-source instruction generator for RISC-V processor verification. RISCV-DV explicitly lists Privileged CSR setup randomization and a Privileged CSR test suite among its supported features. [C1]

Role in RISCV-DV

RISCV-DV is intended for RISC-V processor verification and supports privileged execution contexts, including machine mode, supervisor mode, and user mode. Within that verification environment, privileged CSR functionality is addressed through randomized setup and dedicated testing support. [C2]

Supported feature areas

The evidence identifies two direct Privileged CSR-related feature areas:

  • Privileged CSR setup randomization: RISCV-DV can randomize privileged CSR setup as part of generated verification scenarios. [C1]
  • Privileged CSR test suite: RISCV-DV includes a test suite specifically for privileged CSR coverage or validation. [C1]

Related verification context

Privileged CSR support is listed alongside other RISCV-DV verification features such as page table randomization and exception support, trap/interrupt handling, MMU stress testing, illegal instruction generation, debug mode support, and co-simulation with multiple instruction-set simulators. [C3]

CITATIONS

3 sources
3 citations
[1] C1: RISCV-DV lists Privileged CSR setup randomization and a Privileged CSR test suite as supported features. chipsalliance/riscv-dv
[2] C2: RISCV-DV is an SV/UVM-based open-source instruction generator for RISC-V processor verification and supports machine mode, supervisor mode, and user mode. chipsalliance/riscv-dv
[3] C3: RISCV-DV lists related verification features including page table randomization and exception support, trap/interrupt handling, MMU stress testing, illegal instruction generation, debug mode support, and co-simulation with multiple ISS implementations. chipsalliance/riscv-dv