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General Information

Sharing of RZ/G2L Board Documentation

RZ/V2L Boot Loaders Warning

⚠️ Warning.

The pre-loaded bootloaders (u-boot and ARM Trusted Firmware) on the RZ/V2L Evaluation Kit (SMARC board) are not up to date with the current BSP. It is strongly recommended that the bootloaders generated when building the BSP as described in the Startup Guide document that is distributed with the BSP Package, be programmed into SPI Flash on the board using Flash Writer.

Known issues with pre-loaded loaders.

  • DRP Demos will prematurely exit.
  • ISP Demos will prematurely exit.
  • RZV2L Multi-OS CM33 Debug fails connection

Available Demos

⭐ Prebuilt Demo Images ⭐

Renesas has prepared pre-built images available for download from renesas.com.


⭐⭐ RZ/V2L AI SDK Applications Demo SD Image


RZ/V2L DRP-AI Object Detection and Pose Estimation DEMO


RZ/V2L DRP-AI USB Camera HTTP Demo SD Image version

RZ/V2L DRP-AI USB Camera HTTP Demo Pre-build version

DRP-AI Pretrained Applications

Please see the DRP-AI Pretrained Models page for details about pretrained applications.

DRP-AI Demos

The RZV2L DRP-AI Demos can be found here.

These demos include pre-build applications, source code and documentation about the DRP-AI.

Simple ISP Demos

Information about the RZV2L Simple ISP can be found here.

These demos include pre-build applications, source code and documentation about the DRP-AI and ISP.

Camera Data Receive Unit (CRU) Sample App

GStreamer Application Note

Getting Started

The Renesas RZV AI SDK provides board bring up of the EVK and AI Demos.

  • RZV2L Getting Started using pre-build images Link
    • PreBuilt Images Link
  • RZV2L Yocto Getting Started Link 


SD Card Prepare and Booting

Factor Boot Loader Warning

Please read section V2L Boot Loaders Warning about the factory boot loaders programmed into the EVK boards.

Format and Load an SD Card

  • The evaluation boards can be booted from SD Cards. The SD card must be formatted and loaded using a Linux PC. A helpful script has been created (usb_sd_partition) that you can run on your Linux PC.
  • Insert your micro SD card into a USB-SD-Card reader and then plug into a Linux PC.
  • Use the commands below to download the formatting script and run. Please select your card and choose the default settings.
$ wget https://raw.githubusercontent.com/renesas-rz/rzg2_bsp_scripts/master/usb_sd_partition/usb_sd_partition.sh
$ chmod +x usb_sd_partition.sh
$ ./usb_sd_partition.sh
  • Use the commands below to copy the files you build with the BSP to the SD card. Start in the base of your Yocto BSP.
# Change to the Yocto output directory that contains the files
$ cd build/tmp/deploy/images/smarc-rzv2l

# Copy the Linux kernel and Device Tree to partition 1
$ sudo cp -v Image /media/$USER/RZ_FAT
$ sudo cp -v r9a07g054l2-smarc.dtb /media/$USER/RZ_FAT

# Copy and expand the Root File System to partition 2
$ sudo tar -xvf core-image-weston-smarc-rzv2l.tar.gz   -C /media/$USER/RZ_ext
    (or if NOT using graphics)
$ sudo tar -xvf core-image-minimal-smarc-rzv2l.tar.gz   -C /media/$USER/RZ_ext

# Make sure all files are finished writing before removing the USB card reader from the PC
$ sync
  • Safely remove your USB card reader by right clicking on the drive icon (either RZ_FAT or RZ_ext) in Ubuntu and selecting "Eject"

Power the Board and Connect to the Serial Port

  • Supply power the board using the USB-C connection on the carrier board labeled "Power Input"
  • On the carrier board, press the red button in order to turn on power to the board. The green LED labeled "Carrier PWR On" will be lit when power is on.
  • Now that the board is powered, plug a USB micro cable into the carrier board to the USB connector labeled "SER 3 UART". Use a serial terminal program to interact as you board. With a Linux PC, we recommend using "putty" (connects to /dev/USB0), and with a Windows PC we recommend "TeraTerm" that connects to COMx. The baud rate of the Serial connection is 115200 bps.
  • Press the blue reset button, and then "u-boot" will start. Within 3 seconds, press the space bar on your keyboard in order to stop the auto-boot sequence.

Switch settings for the CPU SOM board

  • The SOM board contains a eMMC Flash device and a Micro SD Card socket. On the SOM board, you can only use one or the other because they are both connected to the same peripheral channel on the RZ/V2L.
  • Set the switches on the SOM board to what you want to use.
  • ⚠️ u-boot environment variables are always stored in eMMC Flash (not SPI flash). This means if you change switch SW1-2 to OFF on the SOM board, you cannot access saved u-boot environments variables and you will always get the message "*** Warning - MMC init failed, using default environment"
  • Note that the SD Card slot on the Carrier board will always work regardless of the setting of SW1-2 because it uses a separate peripheral channel on the RZ/V2L.
  • On the SOM (CPU) board, there is a little switch (SW1) near the SD card socket.
SOM board uses SD Card socket                 SOM board uses eMMC Flash (recommended)
SW1-1 = ON/OFF(JTAG)                          SW1-1 = ON/OFF(JTAG)
SW1-2 = ON                                    SW1-2 = OFF
      +-----+                                       +-----+
      | ON  |                                       | ON  |
      | = = |                                       | =   |
      |     |                                       |   = |
      | 1 2 |                                       | 1 2 |
      +-----+                                       +-----+


Boot the Board

Caution on default factory boot loaders

Please see RZ/V2LBootLoadersWarning  about the factory programmed evaluation boards  

Boot Option 1 (Recommended)

Boot using SD Card on Carrier Board (Recommended)
  • SOM Board:
    • eMMC Flash onboard is connected to SDHI channel 0
    • SD Card slot is disabled
  • Carrier Board:
    • SD Card slot is connected to SDHI channel 1   (contains kernel and file system)


  • Insert the SD card into the socket on Carrier Board.
┌─────┬─────┬─────┐
│     │ SOM │     │
│     └─────┘     │
│  Carrier Board  │
│     ┌─┐         │
└─────┴─┴─────────┘
       ↑
 SD Card Socket
  • Press the blue reset button, and then "u-boot" will start. Within 3 seconds, press the space bar on your keyboard in order to stop the auto-boot sequence.
  • At the u-boot prompt ( => ), enter the following commands to boot the board:

RZ/V2L EVK Booting Commands:

   # Create command macros and save them:
=> setenv sd_boot1 'mmc dev 1 ; fatload mmc 1:1 0x48080000 Image ; fatload mmc 1:1 0x48000000 Image-r9a07g054l2-smarc.dtb'
=> setenv sd_boot2 'setenv bootargs 'root=/dev/mmcblk1p2 rootwait' ; booti 0x48080000 - 0x48000000'
=> setenv bootcmd 'run sd_boot1 sd_boot2'
=> saveenv

   # Reset the board and it will automatically boot

Boot Option 2 (Advanced)

Boot using eMMC Flash on SOM Board (Advanced)
  • SOM Board:
    • eMMC Flash onboard is connected to SDHI channel 0            (contains kernel and file system)
    • SD Card slot is disabled
  • Carrier Board:
    • SD Card is connected to SDHI channel 1


  • Set switch SW1-2 = OFF
  • The boot loader (u-boot) by default will try to boot from eMMC after 3 seconds.
  • Press the blue reset button and wait.

Boot Option 3 (Advanced)

Boot using SD Card on SOM Board (Advanced)
  • SOM Board:
    • eMMC Flash onboard is disabled
    • SD Card slot is connected to SDHI channel 0            (contains kernel and file system)
  • Carrier Board:
    • SD Card is connected to SDHI channel 1


  • Set switch SW1-2 = ON
  • Insert the SD card into the socket on SMARC SOM CPU board (not the carrier board).
  • Press the blue reset button, and then "u-boot" will start. Within 3 seconds, press the space bar on your keyboard in order to stop the auto-boot sequence.
  • Note that you will get this message every time "*** Warning - MMC init failed, using default environment" because u-boot environment variables are stored in eMMC Flash (that you disabled)
  • At the u-boot prompt ( => ), enter the following commands to boot the board:
  # Manually enter the following commands to boot
=> mmc dev 0 ; fatload mmc 0:1 0x48080000 Image ; fatload mmc 0:1 0x48000000 Image-r9a07g054l2-smarc.dtb
=> setenv bootargs 'root=/dev/mmcblk0p2 rootwait' ; booti 0x48080000 - 0x48000000

Linux Login

  • The login will be "root" (no password is needed)

RZV2L Cortex-M33 Multi-OS Package

Instructions for RZV Cortex-M33 Multi-OS Package is located below.

Cortex-M33 Multi-OS Package Support

Supported MIPI Camera modules for RZ/V2L EVK

Additional Supported Camera Modules are listed below:

e-CAM20_CURZ is an AR0234-based Full HD Color Global Shutter Camera. It supports the UYVY image format and is provided with an M12 lens holder – which together make it compatible with Renesas ® RZ/V2L. Its key features make e-CAM20_CURZ a perfect fit for applications like AMR, smart shopping, smart traffic, etc. (Order number: e-CAM20_CURZ_1H01R2)

e-CAM21_CURZ is a Full HD Ultra low light camera for Renesas ® RZ/V2L based on the Sony® STARVIS™ IMX462 sensor. It comes with superior NIR performance and is equipped with an inbuilt ISP and an M12 lens holder – making it ideal for applications like people counting, animal tracking, smart agriculture, etc. (Order Number: 2. e-CAM21_CURZ_1H01R2 )

Enable eMMcC Flash

The instructions to enable the RZV2L to boot from eMMC Flash at on the RZG2L Page here

Program On-Board eMMC Flash

The instructions to enable the RZV2L to load the Linux kernel, DTB, and Filesystem RZG2L Page here

Fix CPUs 100% Busy at Startup

Fix rngd bug that randomly keeps all CPUs busy after startup

RZ MPUs (at least non-secure versions) do not have a hardware random number generation module (/dev/hwrng), but that's the default setting for the systemd rngd service.

With that, rngd occupies the CPU resources to build up entropies during start-up.

Randomly, this process does not end properly and slows down the entire system significantly.

But if an available pseudorandom number generator is selected, rngd finishes properly always.

The following modification is sufficient:

Before you build the BSP, modify

poky/meta/recipes-support/rng-tools/rng-tools/default

from

   EXTRA_ARGS="-r /dev/hwrng"

to

   EXTRA_ARGS="-r /dev/urandom -x jitter"

However, normally you do not want to modify the original recipe but instead create a new one to override the old one.

  1. Create a new folder: mkdir - p meta-renesas/recipes-rzg2l/recipes-support/rng-tools
  2. Change dir: cd meta-renesas/recipes-rzg2l/recipes-support/rng-tools
  3. Create a new file in that folder: vi rng-tools_%.bbappend
  4. Edit the file just created and add these lines: FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:" SRC_URI += "file://default"(1)
  5. Create another folder: mkdir -p rng-tools
  6. Add a file vi default
  7. Add the new content into it: EXTRA_ARGS="-r /dev/urandom -x jitter"
  8. Rebuild the image with the new package: bitbake core-image-weston

(1) Note that this is the new Yocto syntax. For older versions of Yocto you may need to replace : (colon) with _ (underscore): so FILESEXTRAPATHS_prepend.

Alternatively, you can modify the

/etc/default/rng-tools

file in the current target rootfs accordingly.

DRP-AI Driver Version 7.00

This version to the DRP-AI Reserve Area has changed from 0x70000000 to 0x80000000, because of this older versions of the DRP-AI Implementation Source code will fail with the following errors.

[ERROR] Failed to run DRPAI_ASSIGN : errno=22

[ERROR] Failed to run load_data_to_mem : resnet50_cam/drp_desc.bin

[ERROR] Failed to load DRPAI Data

This is due to the generated DRP Translator files map to the older address. Please use the DRP Translator version 1.70 when generating the DRP files and use the latest sample code included in the DRP-AI package version 7.0.


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