RISCV32 Emulation (QEMU)

Overview

The RISCV32 QEMU board configuration is used to emulate the RISCV32 architecture.

Qemu (Credit: qemu.org)

Programming and Debugging

Applications for the qemu_riscv32 board configuration can be built and run in the usual way for emulated boards (see Building an Application and Run an Application for more details).

Flashing

While this board is emulated and you can’t “flash” it, you can use this configuration to run basic Zephyr applications and kernel tests in the QEMU emulated environment. For example, with the Synchronization Sample:

# From the root of the zephyr repository
west build -b qemu_riscv32 samples/synchronization
west build -t run

This will build an image with the synchronization sample app, boot it using QEMU, and display the following console output:

***** BOOTING ZEPHYR OS v1.8.99 - BUILD: Jun 27 2017 13:09:26 *****
threadA: Hello World from riscv32!
threadB: Hello World from riscv32!
threadA: Hello World from riscv32!
threadB: Hello World from riscv32!
threadA: Hello World from riscv32!
threadB: Hello World from riscv32!
threadA: Hello World from riscv32!
threadB: Hello World from riscv32!
threadA: Hello World from riscv32!
threadB: Hello World from riscv32!

Exit QEMU by pressing CTRL+A x.

Debugging

Refer to the detailed overview about Custom Board, Devicetree and SOC Definitions.