VAR-SOM-MX6 Debian Recovery SD card: Difference between revisions

Revision as of 16:00, 7 February 2017

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 mx6-som-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/

@@ Line 2: / Line 2: @@
 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.
-== Preparing a recovery SD card ==
+== Download the recovery SD card image ==
-* Download mx6-som-recovery-sd.vXX.img.gz (latest) which is available on Variscite's FTP: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/
+Download mx6-som-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/
-* 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)
+== 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)
 <pre>
-$ gunzip var-mx6-debian-recovery-sd.vXX.img.gz
+$ gunzip mx6-som-recovery-sd.vXX.img.gz
 $ sudo umount /dev/sdX*
-$ sudo dd if=var-mx6-debian-recovery-sd.vXX.img of=/dev/sdX bs=1M
+$ sudo dd if=mx6-som-recovery-sd.vXX.img of=/dev/sdX bs=1M
 (Replace /dev/sdX with your actual device)
 </pre>
+=== Using a Windows based host ===
+Download Win32 Disk Imager from: https://sourceforge.net/projects/win32diskimager/, install and run it.<br>
+Select the image file, and the SD card device - double check that the device is correct to avoid accidentally overwriting a different device.<br>
+Click on "Write".<br>
+No need to format the SD card before writing the image to it.<br>
 == Recover NAND flash/eMMC ==