Microchip mpfs_icicle


The Microchip mpfs_icicle board is a PolarFire SoC FPGA based development board with a Microchip MPFS250T fpga device. The E51 RISC-V CPU can be deployed on the mpfs_icicle board. More information can be found on the Microchip website.

Programming and debugging


Applications for the mpfs_icicle board configuration can be built as usual (see Building an Application):

west build -b mpfs_icicle


In order to upload the application to the device, you’ll need OpenOCD and GDB with RISC-V support. You can get them as a part of SoftConsole SDK. Download and installation instructions can be found on Microchip’s SoftConsole website.

With the necessary tools installed, you can connect to the board using OpenOCD. To establish an OpenOCD connection run:

sudo LD_LIBRARY_PATH=<softconsole_path>/openocd/bin \
<softconsole_path>/openocd/bin/openocd  --file \

Leave it running, and in a different terminal, use GDB to upload the binary to the board. You can use the RISC-V GDB from a toolchain delivered with SoftConsole SDK.

Here is the GDB terminal command to connect to the device and load the binary:

<softconsole_path>/riscv-unknown-elf-gcc/bin/riscv64-unknown-elf-gdb \
-ex "target extended-remote localhost:3333" \
-ex "set mem inaccessible-by-default off" \
-ex "set arch riscv:rv64" \
-ex "set riscv use_compressed_breakpoints no" \
-ex "load" <path_to_executable>


Refer to the detailed overview of Application Debugging.