Tool for booting PICO-IMX6ULL, PICO-IMX6UL or PICO-IMX7D over OTG/USB-C.

Usage:

1. Set boot mode to serial download mode.

2. Power up the board.

3. Attach cable between USB host port on PC and the OTG/USB type C
port on the baseboard.

4. A "Freescale Semiconductor" USB device should be visible on the PC.

5. Send the boot image ("boot bomb") to your board by:
a) on Windows, use sb_loader.exe
b) on Linux, use imx_usb

Note: use the right boot image (the UL and ULL uses the same image).

6. After a few (2-3) seconds a USB mass storage device should appear
attached to the PC. This corresponds to the on-board storage on the module.

7. The software in the module can be prepared using this mass storage device.
Either format and copy the files there, or use WinDiskImager to copy a cloned
image there.

