View source for VAR-SOM-AM33 Yocto NAND Recovery

= NAND Recovery introduction =

As an easy and fast way to recover the VAR-SOM-AM33 NAND flash, Variscite provides a recovery SD card image that can be used to install the pre-built Linux and Android systems.<br>This SD card image includes a script (nand-recovery.sh) that installs all the boot images and root file-system.<br> 

'''Preparing rescue SD card''' 

*Plug your SD card to your Linux machine, run dmesg and see what device is added (i.e. /dev/sd<span style="color: rgb(255, 0, 0);">'''X'''</span>) 
*gunzip am33-som-nand-recovery-sd.vX.img.gz (get latest)
*dd if=am33-som-nand-recovery-sd.vX.img of=/dev/sd<span style="color: rgb(255, 0, 0);">'''X'''</span> bs=128k

= Download Variscite's pre-built recovery SD card image =

Download am33-som-nand_recovery-sd-....img.gz from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-AM33/Software<br>

= Write the image to an SD card =

* Plug the SD card into your Linux HOST PC, run "dmesg|tail" and see which device is added (i.e. /dev/sd<span style="color: rgb(255, 0, 0);">'''b'''</span>) 

<pre>$ gunzip am33-som-nand-recovery-sd-....img.gz
$ sudo dd if=am33-som-nand-recovery-sd-....img of=/dev/sdX bs=1M
Replace /dev/sdX with your actual device
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= Connect target debug serial to linux host=

Follow : http://www.variscite.com/images/stories/DataSheets/VAR_DVK_AM33_V1.11_Quick_Start_Guide_V1.0.pdf <br>
to connect target serial debug port to host PC

= Boot NAND recovery SD-Card=

*Power-off the board.
*Insert the SD card into the SD/MMC 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
*login as 'root', no password is required


= NAND recovery script usage =

<br> '''NAND recovery script usage:''' 
<pre>usage: /sbin/nand-recovery.sh options

This script install Linux/Android binaries in VAR-SOM-AM33 NAND.

OPTIONS:
  -h Show this message
  -o &lt;Linux|Android&gt; OS type (default: Linux).

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