Yocto Flash From Net: Difference between revisions

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  $ sudo tar xvf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-mtdutils-{{#var:MACHINE_NAME}}.tar.bz2 -C ~/flash_rootfs
  $ sudo tar xvf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-mtdutils-{{#var:MACHINE_NAME}}.tar.bz2 -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}}-*.dtb /tftpboot/
  $ sudo cp tmp/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}}-imx*.dtb /tftpboot/
  $ sudo rename 's/{{#var:KERNEL_IMAGE}}-//' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb
  {{#ifeq: {{#var:HARDWARE_NAME}}|VAR-SOM-MX6|$ sudo rename 's/{{#var:KERNEL_IMAGE}}-//' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb}}


Insert nand-recovery into your host and copy files
Insert nand-recovery into your host and copy files

Revision as of 13:08, 15 May 2017

-Flash From Network Yocto system

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. Mix and match the nand-recovery version with the system you would like to flash.
  3. This is a concept Wiki. Please adopt it to your system and your requirements.
  4. Android can be flashed in the same way.

Build minimal file system

$ gedit ../sources/poky/meta/recipes-core/images/core-image-minimal-mtdutils.bb

Set the image to include: IMAGE_INSTALL += "mtd-utils imx-kobs mtd-utils-ubifs"
Build the system:

$ bitbake core-image-minimal-mtdutils

Create a root file system and copy files

$ mkdir ~/flash_rootfs
$ sudo tar xvf tmp/deploy/images//core-image-minimal-mtdutils-.tar.bz2 -C ~/flash_rootfs
$ sudo cp tmp/deploy/images// /tftpboot
$ sudo cp tmp/deploy/images//-imx*.dtb /tftpboot/

Insert nand-recovery into your host and copy files

$ sudo mkdir ~/flash_rootfs
$ sudo cp -a /media/rootfs/opt/images ~/flash_rootfs/opt/
$ sudo cp  /media/rootfs/sbin/*.sh ~/flash_rootfs/sbin/

Boot into U-Boot and change environment variables

$ setenv serverip <your host ip address>
$ setenv bootfile 
$ setenv fdt_file <relevant device tree>
$ setenv nfsroot /home/<your username>/flash_rootfs
$ setenv console ttymxc0
$ 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 . You can update the images to use your images or custom install_yocto.sh to your requirements.