Boot from USB OTG - i.MX8M

Revisions and Notes

Date	Owner	Revision	Notes
23 Feb 2022		1.0	Initial release

Introduction

The following documentation provides a quick guide to boot from USB OTG port.

Step-by-step

1. Clone the mfgtools project by running the following:

git clone https://github.com/NXPmicro/mfgtools.git

• Please follow the Build instructions.

Please make sure to have cmake 3.19 or a newer version.

2. Install U-Boot binaries

• You can Install U-Boot binaries from SolidRun Images site.

3. Set the switches on the boot source selector as follows:

4. Serial connection

Connect your micro USB cable to your device.

• You can refer to the serial connection section in one of our quick start guide pages - Cubox-M, HummingBoard Pulse.

5. Connect the Male to Male USB-A cable to the OTG port on your device.

Identify the OTG port It’s the upper USB port. This holds true of all our i.MX8 based boards.

• Make sure you can detect the USB = NXP Semiconductors in the usb devices list.

6. Use the following commands for loading the U-Boot:

cd <DIRPATH>/mfgtools/uuu/
sudo ./uuu <flash.bin-dir>/flash.bin

• For more information about the uuu tools, you can refer to https://github.com/NXPmicro/mfgtools

i.MX8M-Plus Example

The following is an example for i.MX8M-Plus Step-by-step:

1. Once you built the mfgtools, run the following to install the U-Boot binaries

wget https://solid-run-ignition.sos-de-fra-1.exo.io/imx8mp/Buildroot/flash-uboot-1g-and-3g.bin

• You can build your own image using the runme.sh script here – https://github.com/SolidRun/imx8mp_build. The flash.bin should be under $ROOGitHub - SolidRun/imx8mp_build: IMX8M Plus buildroot build script​.TDIR/build/imx-mkimage/iMX8M/flash.bin

2. Connect your micro USB cable to your device.

3. Connect the Male to Male USB-A cable to the OTG port on your device.

• Make sure you can detect the USB = NXP Semiconductors in the usb devices list with the exact same vendor ID as shown in the below figure:

4. Change your current working directory and load the U-Boot:

cd <DIRPATH>/mfgtools/uuu/
sudo ./uuu <flash.bin-dir>/flash-uboot-1g-and-3g.bin

Then, you should be able to see the following:

At this point U-Boot has been loaded to RAM and is running.