iMX6 OpenRex Production

Disclaimer of caution

This procedure is intended for manufacturing and virgin SBCs only and should be never applied for shipped iMX6 OpenRex Single Board Computers.

BE AWARE THAT E-FUSES PROGRAMMING IS A NON REVERSAL PROCESS! WARRANTY CLAIM CAUSED BY IMPROPER E-FUSES PROGRAMMING WILL NOT BE ACCEPTED!

Information

This procedure will enforce loading firmware from SPI3 port and will set a unique MAC address.

Description

Production procedure consists of following steps:

Short BOOT_MODE jumper JP2 on iMX6 OpenRex SBC
Connect UART port to serial terminal (Settings: 115200 8n1)
Connect USB_OTG port to host PC utilising microUSB-USB cable
Power on iMX6 iMX6 OpenRex SBC
Execute Manufacturing toolkit at host PC
Press Start button (iMX6 OpenRex SBC will boot firmware loaded over USB)
Wait until firmware (U-Boot) is booted (serial terminal)
Burn eFuses over serial terminal
Remove BOOT_MODE jumper JP2
Power off iMX6 OpenRex SBC

Requirements

microUSB-USB cable
UART cable
5V Power supply
iMX6 OpenRex SBC
Windows PC equipped with MfgTool feature and serial line terminal

Configurations

Production-OpenRex-basic.bat  # Production i.mx6s  512MB
Production-OpenRex-max.bat    # Production i.mx6q  2GB
Production-OpenRex-max4g.bat  # Production i.mx6q  4GB
Production-OpenRex-ultra.bat  # Production i.mx6qp 4GB

Procedure

Select appropriate BAT file and start the bootloader transfer over USB OTG interface:
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Wait until the process is finished:
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The board boots from the loaded firmware:
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E-Fuses

This operation is not reversible and should be executed carefully! i.MX6 processor must be replaced in the case of error.

Boot From SPI3

fuse prog 0 5 0x2A000030
fuse prog 0 6 0x00000010

Boot From SATA

fuse prog 0 5 0x00001020
fuse prog 0 6 0x00000010

MAC Address

For example address 00:0D:15:00:D1:75 is used:

fuse prog 4 3 0x000d
fuse prog 4 2 0x1500d175

Testing configuration

To check if E-Fuses were setup correctly, test procedure consists of following steps:

Ensure that BOOT_MODE jumper JP2 is not present
Plug micro SD card with valid testing firmware (or plug SATA disk if SATA booting was selected)
Power on iMX6 OpenRex SBC
On-board red LED must start flashing automatically (bootloader was executed and kernel loaded)
Power off iMX6 OpenRex SBC