VAR-SOM-AM33 Yocto NAND Recovery: Difference between revisions
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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> | 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 | '''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>) | *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>) | ||
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*dd if=am33-som-nand-recovery-sd.vX.img of=/dev/sd<span style="color: rgb(255, 0, 0);">'''X'''</span> bs=128k | *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-in the supplied SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sd<span style="color: rgb(255, 0, 0);">'''X'''</span>) | * Plug-in the supplied SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sd<span style="color: rgb(255, 0, 0);">'''X'''</span>) | ||
* Download am33-som-nand-recovery-sd. | * Download am33-som-nand-recovery-sd-....img.gz ( latest which is available on Variscite's FTP) | ||
<pre>$ gunzip am33-som-nand-recovery-sd. | <pre>$ gunzip am33-som-nand-recovery-sd-....img.gz | ||
$ sudo dd if=am33-som-nand-recovery-sd. | $ sudo dd if=am33-som-nand-recovery-sd-....img of=/dev/sdX bs=128k | ||
Replace /dev/sdX with your true device, You can find it with dmesg. | Replace /dev/sdX with your true device, You can find it with dmesg. | ||
</pre> | </pre> | ||
Revision as of 08:08, 31 August 2017
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.
This SD card image includes a script (nand-recovery.sh) that installs all the boot images and root file-system.
Preparing rescue SD card
- Plug your SD card to your Linux machine, run dmesg and see what device is added (i.e. /dev/sdX)
- gunzip am33-som-nand-recovery-sd.vX.img.gz (get latest)
- dd if=am33-som-nand-recovery-sd.vX.img of=/dev/sdX 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
Write the image to an SD card
- Plug-in the supplied SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sdX)
- Download am33-som-nand-recovery-sd-....img.gz ( latest which is available on Variscite's FTP)
$ gunzip am33-som-nand-recovery-sd-....img.gz $ sudo dd if=am33-som-nand-recovery-sd-....img of=/dev/sdX bs=128k Replace /dev/sdX with your true device, You can find it with dmesg.
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
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
NAND recovery script usage:
usage: /sbin/nand-recovery.sh options This script install Linux/Android binaries in VAR-SOM-AM33 NAND. OPTIONS: -h Show this message -o <Linux|Android> OS type (default: Linux).