Revisions and Notes
Date | Owner | Revision | Notes |
|---|---|---|---|
| 1.0 | Initial release | |
Table Of Contents |
Introduction
The following documentation provides a quick guide to boot from USB OTG port.
Step-by-step
1. Clone a repository to install and build imx_usb_loader application by run the follwoing:
git clone https://github.com/boundarydevices/imx_usb_loader.git cd imx_usb_loader make
imx_usb_loader : This application implements the Serial Download Protocol that the i.MX6 Boot-ROM uses to communicate. It is available on github account of boundarydevices.
The final binary is called imx_usb and can be executed in place.
2. Install SPL & U-Boot binaries:
wget https://solid-run-images.sos-de-fra-1.exo.io/IMX6/U-Boot/spl-imx6-sdhc.bin wget https://solid-run-images.sos-de-fra-1.exo.io/IMX6/U-Boot/u-boot-imx6-sdhc.img
You can Install U-Boot & SPL binaries from SolidRun Images site.
3. Serial connection
Please see our pages Cubox-i, HummingBoard Edge under serial connection section.
4. Connect your Male to Male USB-A cable to the OTG port on your device.
Identify the OTG port
To quote our developer Jon: “it is the top port next to the Ethernet jack” More formally it is the top port on the U5 header. This holds true of all our i.MX6 based boards.
Make sure you can detect the USB = NXP Semiconductors in the usb devices list with the exact same vendor ID as shown in the following example:
5. Run the script imx_usb exec with the SPL to load SPL:
sudo ./imx_usb spl-imx6-sdhc.bin
On success, SPL should announce itself on the serial console:
6. Run the script imx_usb exec with the U-Boot to load U-Boot :
sudo ./imx_usb u-boot-imx6-sdhc.img
On success, U-Boot should announce itself on the serial console:
Success Indicator for Cubox-i
The Cubox-i has an LED that is off by default and turned on by u-boot. So if the LED turns red, U-Boot was loaded successfully.
At this point U-Boot has been loaded to RAM and is running.