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<!-- Set release according to "release" parameter in URL and use MORTY_BETA_DART-6UL as default
<!-- Set release according to "release" parameter in URL and use MORTY_V1.0_DART-6UL as default
--> {{#vardefine:RELEASE_PARAM|{{#urlget:release}}}} <!--
--> {{INIT_RELEASE_PARAM|RELEASE_MORTY_V1.0_DART-6UL}}<!--
--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM|RELEASE_MORTY_BETA_DART-6UL}}}} <!--
--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
--> {{PageHeader|{{#var:HARDWARE_NAME}}-Flash From Network Yocto system}} {{DocImage|category1={{#var:HARDWARE_NAME}}|category2=Yocto}} __toc__
--> {{#lst:Debian_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
--> {{#lst:B2QT_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!--
-->                                {{#vardefine:BUILD_PAGE|Yocto_Build_Release}}  {{#vardefine:PLATFORM_OS|Yocto}} {{#vardefine:INSTALL_SCRIPT|install_yocto.sh}} <!-- Default to Yocto
--> {{#varexists:DEBIAN_NAME      | {{#vardefine:BUILD_PAGE|Yocto_Debian_Build_Release}} {{#vardefine:PLATFORM_OS|Debian}} {{#vardefine:INSTALL_SCRIPT|install_debian.sh}}  | }} <!-- Debian
--> {{#varexists:B2QT_BSP_VERSION | {{#vardefine:BUILD_PAGE|B2QT_Build_Release}}  {{#vardefine:PLATFORM_OS|Boot2Qt}} | }} <!-- B2Qt
--> {{COMMON_YOCTO_VARS}} <!--
--> {{PageHeader|{{#var:HARDWARE_NAME}} - Flash Yocto images from network}} {{DocImage|category1={{#var:HARDWARE_NAME}}|category2=Yocto}} __toc__


= Flashing a complete Yocto system from Network using TFTP &amp; NFS  =
= Flashing a complete Yocto system from Network using TFTP &amp; NFS  =
{{note| NOTES:<br>
{{note| NOTES:<br>
#Please make sure your host system is ready to use TFTP/NFS. Use our WIKI if required: {{Varlink2|Yocto Setup TFTP/NFS|{{#var:RELEASE_LINK}}}}
#Please make sure your host system is ready to use TFTP/NFS. Use our Wiki if required: {{Varlink2|Yocto Setup TFTP/NFS|{{#var:RELEASE_LINK}}}}
#Mix and match the nand-recovery version with the system you would like to flash.
#This is a concept Wiki. Please adapt it to your system and your requirements.
#This is a concept Wiki. Please adopt it to your system and your requirements.
#Android and Debian can be flashed in the same way.
#Android can be flashed in the same way.
|info}}
|info}}


== Build minimal file system==
== Build minimal file system ==
<pre>
To setup a build environment follow steps 1 & 3 of the {{Varlink|{{#var:BUILD_PAGE}}|{{#var:RELEASE_LINK}}|Build {{#var:PLATFORM_OS}} from source code}} guide.<br>
$ gedit ../sources/poky/meta/recipes-core/images/core-image-minimal-mtdutils.bb
Then, append the following to the conf/local.conf file in your Yocto build directory:
</pre>
{{#switch: {{#var:SOC_SERIES}} | am6 | imx8 | imx9=
IMAGE_INSTALL{{#var:YOCTO_OVERRIDE_PREFIX}}append = " bash e2fsprogs-mke2fs tar dosfstools zstd"
|#default=
IMAGE_INSTALL{{#var:YOCTO_OVERRIDE_PREFIX}}append = " bash e2fsprogs-mke2fs tar mtd-utils imx-kobs mtd-utils-ubifs"
}}


Set the image to include:
And build the image:
IMAGE_INSTALL += "mtd-utils imx-kobs mtd-utils-ubifs"<br>
{{#switch: {{#var:SOC_SERIES}}
Build the system:
| am6=<br>
<pre>
$ MACHINE={{#var:MACHINE_NAME}} bitbake core-image-minimal
$ bitbake core-image-minimal-mtdutils
| #default=<br>
</pre>
$ bitbake core-image-minimal
 
}}
Create a root file system and copy files


Create a root file system and copy files:
{{#switch: {{#var:SOC_SERIES}} | imx8 | imx9=
<br>
$ mkdir ~/flash_rootfs
$ sudo tar xf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.{{#var:ROOTFS_COMP_TARBALL_EXT}} -C ~/flash_rootfs
$ sudo cp -a ~/flash_rootfs/boot/*.dtb /tftpboot
$ sudo cp ~/flash_rootfs/boot/{{#var:KERNEL_IMAGE}} /tftpboot
| am6=
<br>
$ mkdir ~/flash_rootfs
$ sudo tar xf {{#var:DEPLOY_DIR}}/images/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.tar.zst -C ~/flash_rootfs
$ sudo cp -a ~/flash_rootfs/boot/* /tftpboot/
|#default=
<br>
  $ mkdir ~/flash_rootfs
  $ mkdir ~/flash_rootfs
  $ sudo tar xvf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-mtdutils-{{#var:MACHINE_NAME}}.tar.bz2 -C ~/flash_rootfs
  $ sudo tar xf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.{{#var:ROOTFS_COMP_TARBALL_EXT}} -C ~/flash_rootfs
  $ sudo cp tmp/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}} /tftpboot
  $ sudo cp tmp/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}} /tftpboot
  $ sudo cp tmp/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}}-imx*.dtb /tftpboot/
  $ for f in tmp/deploy/images/{{#var:MACHINE_NAME}}/*.dtb; do if <nowiki>[[ -L $f ]] && [[</nowiki> $f != *{{#var:MACHINE_NAME}}.dtb <nowiki>]]</nowiki>; then sudo cp $f /tftpboot/; fi done
  {{#ifeq: {{#var:HARDWARE_NAME}}|VAR-SOM-MX6||$ sudo rename 's/{{#var:KERNEL_IMAGE}}-imx/imx/' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb}}
  $ sudo rename 's/{{#var:KERNEL_IMAGE}}-imx/imx/' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb
}}
 
Edit /etc/exports. E.g.
$ sudo gedit /etc/exports
...and add the following line to it (replace <uname> with the actual username):
/home/<uname>/flash_rootfs    *(rw,sync,no_root_squash,no_all_squash,no_subtree_check)
 
Restart the NFS server:
$ sudo /etc/init.d/nfs-kernel-server restart


{{#switch: {{#var:SOC_SERIES}}
| am6=
Insert the recovery SD card into your host PC and copy the following files from it (assuming it is mounted at /media):
$ sudo mkdir ~/flash_rootfs/opt/
$ sudo cp -a /media/$USER/root/opt/images ~/flash_rootfs/opt/images
$ sudo cp /media/$USER/root/usr/bin/*.sh  ~/flash_rootfs/usr/bin/
| #default=
Insert the recovery SD card into your host PC and copy the following files from it (assuming it is mounted at /media):
Insert the recovery SD card into your host PC and copy the following files from it (assuming it is mounted at /media):
$ sudo cp -a /media/rootfs/opt/images ~/flash_rootfs/opt/
$ sudo cp /media/rootfs/usr/bin/*.sh  ~/flash_rootfs/usr/bin/
}}
Boot the board, stop the autoboot to get to the U-Boot command line, and set the following environment variables:
{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-AM62 |
<pre>
<pre>
$ sudo cp -a /media/rootfs/opt/images ~/flash_rootfs/opt/
=> setenv serverip <HOST_IP_ADDRESS>                (replace <HOST_IP_ADDRESS> with the actual IP address of your host - run 'ifconfig' on the host to get it)
$ sudo cp /media/rootfs/usr/bin/*.sh ~/flash_rootfs/usr/bin
=> setenv ipaddr <TARGET_IP_ADDRESS>                (replace <TARGET_IP_ADDRESS> with the IP address for the target)
=> setenv image Image
=> setenv fdtfile k3-am625-var-som-symphony.dtb
=> setenv rootpath "/home/<user>/rootfs"            (replace <user> with the username on your host computer)
=> setenv netargs 'setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},nolock,v3 rw ip=${ipaddr}:::::eth0'
=> setenv netboot 'tftp ${loadaddr} ${image}; tftp ${fdtaddr} ${fdtfile}; run netargs; booti ${loadaddr} - ${fdtaddr}'
 
=> setenv bootcmd 'run netboot'
=> saveenv
=> boot
</pre>
</pre>
 
| <br>
Boot into U-Boot and change environment variables
 
  => setenv serverip <your host ip address>
  => setenv serverip <your host ip address>
  => setenv bootfile {{#var:KERNEL_IMAGE}}
  => setenv nfsroot /home/<your username>/flash_rootfs
# If you want to set the fdt file yourself, instead of using the default auto detection:
  => setenv fdt_file <relevant device tree>
  => setenv fdt_file <relevant device tree>
=> setenv nfsroot /home/<your username>/flash_rootfs
=> setenv console ttymxc0
  => setenv bootcmd 'run netboot'
  => setenv bootcmd 'run netboot'
  => saveenv
  => saveenv
  => boot
  => boot
}}


On the target flash your system:
On the target flash your system:
<pre>
# {{#var:INSTALL_SCRIPT}}
$ install_yocto.sh
</pre>


A complete system is flashed into the SOMs internal storage (NAND flash/eMMC).
A complete system is flashed into the SOMs internal storage (NAND flash/eMMC).<br>
Once the file system is built you can use it again and again to flash your {{#var:HARDWARE_NAME}}.  
Once the file system is built you can use it again and again to flash your {{#var:HARDWARE_NAME}}.<br>
You can update the images to use your images or custom install_yocto.sh to your requirements.
You can update the images to use your images and/or customize install_yocto.sh to your requirements.

Latest revision as of 15:21, 24 July 2024

Warning: This page is designed to be used with a 'release' URL parameter.

This page is using the default release RELEASE_MORTY_V1.0_DART-6UL.
To view this page for a specific Variscite SoM and software release, please follow these steps:

  1. Visit variwiki.com
  2. Select your SoM
  3. Select the software release
DART-6UL - Flash Yocto images from network

Flashing a complete Yocto system from Network using TFTP & NFS

NOTES:
  1. Please make sure your host system is ready to use TFTP/NFS. Use our Wiki if required: Yocto Setup TFTP/NFS
  2. This is a concept Wiki. Please adapt it to your system and your requirements.
  3. Android and Debian can be flashed in the same way.

Build minimal file system

To setup a build environment follow steps 1 & 3 of the Build Yocto from source code guide.
Then, append the following to the conf/local.conf file in your Yocto build directory:

IMAGE_INSTALL_append = " bash e2fsprogs-mke2fs tar mtd-utils imx-kobs mtd-utils-ubifs"

And build the image:

$ bitbake core-image-minimal

Create a root file system and copy files:

$ mkdir ~/flash_rootfs
$ sudo tar xf tmp/deploy/images/imx6ul-var-dart/core-image-minimal-imx6ul-var-dart. -C ~/flash_rootfs
$ sudo cp tmp/deploy/images/imx6ul-var-dart/zImage /tftpboot
$ for f in tmp/deploy/images/imx6ul-var-dart/*.dtb; do if [[ -L $f ]] && [[ $f != *imx6ul-var-dart.dtb ]]; then sudo cp $f /tftpboot/; fi done
$ sudo rename 's/zImage-imx/imx/' /tftpboot/zImage-*.dtb

Edit /etc/exports. E.g.

$ sudo gedit /etc/exports

...and add the following line to it (replace <uname> with the actual username):

/home/<uname>/flash_rootfs    *(rw,sync,no_root_squash,no_all_squash,no_subtree_check) 

Restart the NFS server:

$ sudo /etc/init.d/nfs-kernel-server restart

Insert the recovery SD card into your host PC and copy the following files from it (assuming it is mounted at /media):

$ sudo cp -a /media/rootfs/opt/images ~/flash_rootfs/opt/
$ sudo cp /media/rootfs/usr/bin/*.sh  ~/flash_rootfs/usr/bin/

Boot the board, stop the autoboot to get to the U-Boot command line, and set the following environment variables:


=> setenv serverip <your host ip address>
=> setenv nfsroot /home/<your username>/flash_rootfs

# If you want to set the fdt file yourself, instead of using the default auto detection:
=> setenv fdt_file <relevant device tree>
=> setenv bootcmd 'run netboot'
=> saveenv
=> boot

On the target flash your system:

# install_yocto.sh

A complete system is flashed into the SOMs internal storage (NAND flash/eMMC).
Once the file system is built you can use it again and again to flash your DART-6UL.
You can update the images to use your images and/or customize install_yocto.sh to your requirements.