VAR-SOM-MX6 Debian Recovery SD card

VAR-SOM-MX6 - Debian recovery SD card

Variscite provides a recovery SD card image that can be used to install the pre-built Debian images into the internal storage device/s of the SOM.

Download the recovery SD card image

Download var-mx6-debian-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/

Write the image to an SD card

Using a Linux based host

Plug-in the SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sdX or /dev/mmcblkX)

$ gunzip mx6-som-recovery-sd.vXX.img.gz
$ sudo umount /dev/sdX*
$ sudo dd if=mx6-som-recovery-sd.vXX.img of=/dev/sdX bs=1M

(Replace /dev/sdX with your actual device)

Using a Windows based host

Download Win32 Disk Imager from: https://sourceforge.net/projects/win32diskimager/, install and run it.
Select the image file, and the SD card device - double check that the device is correct to avoid accidentally overwriting a different device.
Click on "Write".
No need to format the SD card before writing the image to it.

Recover NAND flash/eMMC

• Power-off the board.
• Insert the SD card into the SD card slot of the carrier board (DVK)
• Press and hold the boot-select button, and power-on the board while button is pressed
• The board will automatically boot into Linux from SD card

Flash from command line

• Login as root (no password)
• From Linux command line, type the following

$ debian_install.sh	- Flash Debian into eMMC (Follow instructions)

SD card image file tree

/opt/images/
└── Debian
    ├── SPL.mmc
    ├── SPL.nand
    ├── imx6dl-var-som-cap.dtb
    ├── imx6dl-var-som-res.dtb
    ├── imx6dl-var-som-solo-cap.dtb
    ├── imx6dl-var-som-solo-res.dtb
    ├── imx6dl-var-som-solo-vsc.dtb
    ├── imx6dl-var-som-vsc.dtb
    ├── imx6q-var-dart.dtb
    ├── imx6q-var-som-cap.dtb
    ├── imx6q-var-som-res.dtb
    ├── imx6q-var-som-vsc.dtb
    ├── rootfs.tar.bz2
    ├── u-boot.img.mmc
    ├── u-boot.img.nand
    └── uImage

The debian_install.sh script file is located at /usr/sbin/