VAR-SOM-MX6 Yocto NAND Recovery V60plus

From Variscite Wiki

Variscite provides a recovery SD card image that can be used to install the pre-built U-Boot, Linux kernel and the UBI file system into the NAND-Flash This SD card image includes a script (nand-recovery.sh) that installs all the boot images and root file-system.

Preparing a rescue SD card

$ gunzip mx6-som-nand-recovery-sd.XX.img.gz
$ sudo dd if=mx6-som-nand-recovery-sd.vXX.img of=/dev/sdX bs=128k

(Replace /dev/sdX with your actual device)

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 GUI

Applications Jethro.png

  • Click on the right arrowhead on the upper right corner to change the desktop into Utilities.

Utilities Jethro.png

Click the appropriate button:

Flash from command line

  • Login as root (no password)
  • From Linux command line, type one of flash options
$ install_android.sh	- Flash Android into eMMC (Follow instructions)
$ install_yocto.sh	- Flash Yocto into eMMC or NAND Flash (Follow instructions)

SD card image file tree

/opt/images/
├── Android
│   ├── SPL
│   ├── SPL.mmc
│   ├── boot-imx6q-var-dart.img
│   ├── boot-som-mx6dl-c.img
│   ├── boot-som-mx6dl-r.img
│   ├── boot-som-mx6q-c.img
│   ├── boot-som-mx6q-r.img
│   ├── boot-som-mx6q-vsc.img
│   ├── boot-som-solo-c.img
│   ├── boot-som-solo-r.img
│   ├── boot-som-solo-vsc.img
│   ├── boot.img
│   ├── recovery-imx6q-var-dart.img
│   ├── recovery-som-mx6dl-c.img
│   ├── recovery-som-mx6dl-r.img
│   ├── recovery-som-mx6q-c.img
│   ├── recovery-som-mx6q-r.img
│   ├── recovery-som-mx6q-vsc.img
│   ├── recovery-som-solo-c.img
│   ├── recovery-som-solo-r.img
│   ├── recovery-som-solo-vsc.img
│   ├── recovery.img
│   ├── system.img
│   ├── u-boot-var-imx6-nand.img
│   └── u-boot-var-imx6-sd.img
└── Yocto
    ├── SPL
    ├── SPL.mmc
    ├── rootfs.tar.bz2
    ├── rootfs.ubi.img
    ├── u-boot.img
    ├── u-boot.img.mmc
    ├── uImage
    ├── uImage-imx6dl-var-som-cap.dtb
    ├── uImage-imx6dl-var-som-res.dtb
    ├── uImage-imx6dl-var-som-solo-cap.dtb
    ├── uImage-imx6dl-var-som-solo-res.dtb
    ├── uImage-imx6dl-var-som-solo-vsc.dtb
    ├── uImage-imx6dl-var-som-vsc.dtb
    ├── uImage-imx6q-var-dart.dtb
    ├── uImage-imx6q-var-som-cap.dtb
    ├── uImage-imx6q-var-som-res.dtb
    └── uImage-imx6q-var-som-vsc.dtb