iMX6 Rex Production

Disclaimer of caution

This procedure is intended for manufacturing and virgin modules only and should be never applied for shipped iMX6 Rex Modules.

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 (JP2) jumper on iMX6 Rex Base Board
• Connect RS-232 port to serial terminal (Settings: 115200 8n1)
• Connect USB_OTG port to host PC utilising microUSB-USB cable
• Power on iMX6 Rex Development Kit
• Execute Manufacturing toolkit at host PC
• Press Start button (iMX6 Rex board will boot firmware loaded over USB)
• Wait until firmware (U-Boot) is booted (serial terminal)
• Burn eFuses over serial terminal
• Remove BOOT_MODE jumper
• Power off iMX6 Rex Development Kit

Requirements

• microUSB-USB cable
• UART cable
• 12V Power supply
• iMX6 Rex Development Kit (with USB0 routed modification: USB OTG connector in use R62, R65 assembled
• Windows PC equipped with MfgTool feature and serial line terminal

Configurations

Production-Rex-basic.bat  # Production module i.mx6d  512MB
Production-Rex-pro.bat    # Production module i.mx6q  2GB
Production-Rex-ultra.bat  # Production module i.mx6qp 4GB

Procedure

Select appropriate BAT file and start the bootloader transfer over USB OTG interface:

Wait until the process is finished:

The board boots from the loaded firmware:

E-Fuses

This operation is not reversible and should be executed carefully! The iMX6 Rex Module 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

U-Boot over TFTP

Rex U-Boot > setenv ethaddr 00:01:02:03:04:05
Rex U-Boot > setenv ipaddr 192.168.1.50
Rex U-Boot > setenv serverip 192.168.1.1
Rex U-Boot > mw.b 0x10800000 0xFF 0x80000
Rex U-Boot > tftp 0x10800000 imx6/u-boot-imx6-rexultra.imx
Using FEC device
TFTP from server 192.168.1.1; our IP address is 192.168.1.50
Filename 'imx6/u-boot-imx6-rexultra.imx'.
Load address: 0x10800000
Loading: #######################
         2.6 MiB/s
done
Bytes transferred = 334848 (51c00 hex)
Rex U-Boot > if sf probe 2:2; then sf erase 0x0 0x80000;sf write 0x10800000 0x400 0x7fc00; fi
SF: Detected SST25VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB
SF: 524288 bytes @ 0x0 Erased: OK
SF: 523264 bytes @ 0x400 Written: OK

Configuration testing

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

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