Installing prerequisites

Required packages

Required Libero SoC version

At the time of writing this page, the following guide assumes that the following Microchip tools are installed:

• Libero SoC v2023.2

• SoftConsole v2022.2-RISC-V-747

Building HSS

Clone the sources:

Make sure that the SoftConsole toolchain is in the PATH (replace /opt/microchip with your Libero SoC installation prefix):

Configure the build for RCHD-PF board (use def_config_2gb for a 2GB board version):

Building U-Boot

Clone the sources:

Configure the build for RCHD-PF board and start the build:

Building HSS payload image

Build the HSS payload generator:

Add hss-payload-generator directory to the system PATH:

Use the following YAML configuration file for the hss-payload-generator:

Run the hss-payload-generator to generate the payload image (assumes the above YAML file is saved as hss.yml in the U-Boot directory):

Flashing image

Flashing HSS

Clone the utilities repository:

Flash the HSS using flash-hss.sh shell script - provide HSS ELF file path as an argument:

Flashing U-Boot

In order to flash U-Boot, GPT partition table needs to be created on the eMMC, as HSS loads its payload directly from a GPT partition.

HSS payload must be placed on a partition with the following properties:

Flashing of the eMMC can be done via the emulated USB mass storage device available in the HSS. USB mass storage mode can be entered by typing the usbdmsc command in HSS:

A new USB device should show up in the host system:

Now we can create a GPT partition table and the boot partition:

Finally, we can copy the HSS payload to the boot partition: