UCM-iMX95: U-Boot: Recovery

Introduction

This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter UUU).

Follow the Universal Update Utility instructions to install and setup UUU tool on a workstation.

Getting Recovery U-Boot Firmware Image

• Download the Yocto Linux package from Compulab website.
• Extract the archive.

Flashing U-Boot Firmware

• Power off
• Populate E4 jumper
• Connect the evaluation board microUSB P21 with the workstation USB port using a standard microUSB cable.
• Power on the evaluation board
• On host, run:

uuu -lsusb

Expected output:

uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.5.21-3-gcbff795

Connected Known USB Devices
        Path     Chip    Pro     Vid     Pid     BcdVersion
        ==================================================
        1:131    MX95    SDPS:   0x1FC9 0x0146   0x0002

• Flash U-Boot Firmware.

sudo uuu -v -b emmc /path/to/yocto-linux/bootloader/imx-boot-tagged

After Installation

• Power off
• Disconnect the microUSB cable
• Remove E4 jumper
• Power on
• In u-boot run:

env default -a saveenv