DART-6UL Yocto NAND Recovery: Difference between revisions

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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
{{PageHeader|DART-6UL - Yocto recovery SD card}} {{DocImage|category1=DART-6UL|category2=Yocto}}
This SD card image includes a script (nand-recovery.sh) that installs all the boot images and root file-system.
Variscite provides a recovery SD card image that can be used to install the pre-built U-Boot, Linux kernel and the file system into the internal storage of the SOM.


== Preparing rescue SD-Card: ==
== Download the recovery SD card image ==
Download mx6ul-dart-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: sftp://customerv@ftp.variscite.com/Public/DART-6UL/Software/yocto/legacy-images


* Plug-in the supplied SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sdX or /dev/mmcblk0)
For more information about Variscite's FTP server, see: https://variwiki.com/index.php?title=FTP
* Download mx6ul-dart-nand-recovery-sd.vXX.img.gz ( latest which is available on Variscite's FTP)
 
<pre>$ gunzip mx6ul-dart-nand-recovery-sd.XX.img.gz
== Write the image to an SD card ==
$ sudo dd if=mx6ul-dart-nand-recovery-sd.vXX.img of=/dev/sdX bs=128k
=== Using a Linux based host ===
Replace /dev/sdX with your true device, You can find it with dmesg.
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 mx6ul-dart-recovery-sd.vXX.img.gz
$ sudo umount /dev/sdX*
$ sudo dd if=mx6ul-dart-recovery-sd.vXX.img of=/dev/sdX bs=1M
 
(Replace /dev/sdX with your actual device)
</pre>
</pre>


== Recover Nand Flash==
=== 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 ==
* Power-off the board.
* Insert the SD card into the SD card slot of the carrier board (DVK)
* Make sure the Boot DIP switches are set to SD card: [[DART-6UL Yocto Krogoth R2 build#Setting the Boot DIP switches|Setting the Boot DIP switches]]
* Power up the board - it will boot into Linux from the 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
=== Flash from GUI ===
=== Flash from GUI ===
[[File:Desktop1_1.png]]
[[File:DART-6UL_Recovery.png]]
*Press the right arrow on the upper right corner to change the desktop into Utilities.
<br><br>
[[File:Nandr-38-p1.jpg]]
Touch/Click on the appropriate icon:
<br>
* Install Yocto NAND, WiFi: Flash Yocto with WiFi support to NAND flash
*Push Android-eMMC flash Android into eMMC.
* Install Yocto NAND, SD card: Flash Yocto with SD card support to NAND flash
*Push Yocto-nand  flash Yocto into nand.
* Install Yocto eMMC (SD/WiFi) : Flash Yocto to eMMC (installs both SD card and WiFi dtbs to the BOOT partition and let U-Boot select between them at boot time)
*Push Yocto-eMMC flash Yocto into eMMC. This option require changes in u-boot environment.


=== Flash from command line ===
=== Flash from command line ===
*Login as root (no password)
* Login as root (no password)
* From Linux command line, type one of flash options
* From Linux command line, type one of flash options
<pre>$ android-emmc.sh - flash Android into eMMC
$ yocto-emmc.sh - flash Yocto into eMMC (See note below)
$ yocto-dart.sh - flash Yocto into eMMC DART only.
$ yocto-nand.sh - flash Yocto into nand
</pre>
* in case of yocto-emmc.sh, change boot arguments to : <br>
<pre>
<pre>
$ setenv bootargs console=ttymxc0,115200 video=mxcfb1:off root=/dev/mmcblk1p1 rootwait rw
$ install_yocto.sh - Flash Yocto into eMMC or NAND Flash (Follow instructions)
$ saveenv
</pre>
</pre>


=== SDCARD image file tree ===
=== SD card image file tree ===
<pre>
<pre>
/media/rootfs/opt/images/
/opt/images/
├── Android
│  └── Emmc
│      ├── boot.img
│      ├── 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
│      ├── recovery.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
│      ├── SPL
│      ├── SPL.mmc
│      ├── SPL.new
│      ├── system.img
│      ├── u-boot-var-imx6-nand.img
│      └── u-boot-var-imx6-sd.img
└── Yocto
└── Yocto
    ├── imx6ul-var-dart-emmc_wifi.dtb
    ├── imx6ul-var-dart-nand_wifi.dtb
    ├── imx6ul-var-dart-sd_emmc.dtb
    ├── imx6ul-var-dart-sd_nand.dtb
     ├── rootfs.tar.bz2
     ├── rootfs.tar.bz2
     ├── rootfs.ubi.img
     ├── rootfs.ubi
     ├── SPL
     ├── SPL-nand
     ├── SPL.mmc
     ├── SPL-sd
     ├── u-boot.img
     ├── u-boot.img-nand
     ├── u-boot.img.mmc
     ├── u-boot.img-sd
    ├── uImage
     └── zImage
    ├── uImage-imx6dl-var-som.dtb
    ├── uImage-imx6dl-var-som-solo.dtb
    ├── uImage-imx6dl-var-som-solo-vsc.dtb
    ├── uImage-imx6q-var-dart.dtb
    ├── uImage-imx6q-var-som.dtb
     └── uImage-imx6q-var-som-vsc.dtb
</pre>
</pre>


<pre>
<pre>
Script files located on /media/rootfs/sbin/
The install_yocto.sh script file is located at /usr/bin/
android-emmc.sh
mkmmc_yocto.sh   
yocto-dart.sh 
yocto-nand.sh
mkmmc_android.sh
nand-recovery.sh
yocto-emmc.sh
</pre>
</pre>

Latest revision as of 21:05, 22 August 2024

DART-6UL - Yocto recovery SD card

Variscite provides a recovery SD card image that can be used to install the pre-built U-Boot, Linux kernel and the file system into the internal storage of the SOM.

Download the recovery SD card image

Download mx6ul-dart-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: sftp://customerv@ftp.variscite.com/Public/DART-6UL/Software/yocto/legacy-images

For more information about Variscite's FTP server, see: https://variwiki.com/index.php?title=FTP

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 mx6ul-dart-recovery-sd.vXX.img.gz
$ sudo umount /dev/sdX*
$ sudo dd if=mx6ul-dart-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)
  • Make sure the Boot DIP switches are set to SD card: Setting the Boot DIP switches
  • Power up the board - it will boot into Linux from the SD card

Flash from GUI

DART-6UL Recovery.png

Touch/Click on the appropriate icon:

  • Install Yocto NAND, WiFi: Flash Yocto with WiFi support to NAND flash
  • Install Yocto NAND, SD card: Flash Yocto with SD card support to NAND flash
  • Install Yocto eMMC (SD/WiFi) : Flash Yocto to eMMC (installs both SD card and WiFi dtbs to the BOOT partition and let U-Boot select between them at boot time)

Flash from command line

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

SD card image file tree

/opt/images/
└── Yocto
    ├── imx6ul-var-dart-emmc_wifi.dtb
    ├── imx6ul-var-dart-nand_wifi.dtb
    ├── imx6ul-var-dart-sd_emmc.dtb
    ├── imx6ul-var-dart-sd_nand.dtb
    ├── rootfs.tar.bz2
    ├── rootfs.ubi
    ├── SPL-nand
    ├── SPL-sd
    ├── u-boot.img-nand
    ├── u-boot.img-sd
    └── zImage

The install_yocto.sh script file is located at /usr/bin/
Retrieved from "https://variwiki.com/index.php?title=DART-6UL_Yocto_NAND_Recovery&oldid=26933"
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This page was last edited on 22 August 2024, at 21:05.

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