DART-6UL Yocto NAND Recovery: Difference between revisions

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

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/

@@ Line 3: / Line 3: @@
 == Download the recovery SD card image ==
-Download mx6ul-dart-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/DART-6UL/Software/
+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 ==
@@ Line 9: / Line 11: @@
 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 mx6-som-recovery-sd.vXX.img.gz
+$ gunzip mx6ul-dart-recovery-sd.vXX.img.gz
 $ sudo umount /dev/sdX*
-$ sudo dd if=mx6-som-recovery-sd.vXX.img of=/dev/sdX bs=1M
+$ sudo dd if=mx6ul-dart-recovery-sd.vXX.img of=/dev/sdX bs=1M
 (Replace /dev/sdX with your actual device)
@@ Line 25: / Line 27: @@
 * 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 Jethro R1 build#Setting the Boot DIP switches|Setting the Boot DIP switches]]
+* 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