Yocto Flash From Net: Difference between revisions
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== Build minimal file system== | == Build minimal file system == | ||
{{#ifeq: {{#var:SOC_SERIES}} | imx8 | | To setup a Yocto build environment follow steps 1 & 3 of the {{Varlink|Yocto_Build_Release|{{#var:RELEASE_LINK}}|Build Yocto from source code}} guide.<br> | ||
Then, append the following to the conf/local.conf file in your Yocto build directory: | |||
{{#ifeq: {{#var:SOC_SERIES}} | imx8 | | |||
IMAGE_INSTALL_append = " bash e2fsprogs-mke2fs tar" | |||
| | | | ||
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: | Create a root file system and copy files: | ||
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<pre> | <pre> | ||
$ mkdir ~/flash_rootfs | $ mkdir ~/flash_rootfs | ||
$ sudo tar | $ sudo tar xf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.tar.gz -C ~/flash_rootfs | ||
$ sudo cp -a ~/flash_rootfs/boot/*.dtb /tftpboot | $ sudo cp -a ~/flash_rootfs/boot/*.dtb /tftpboot | ||
$ sudo cp ~/flash_rootfs/boot/{{#var:KERNEL_IMAGE}} /tftpboot | $ sudo cp ~/flash_rootfs/boot/{{#var:KERNEL_IMAGE}} /tftpboot | ||
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<pre> | <pre> | ||
$ mkdir ~/flash_rootfs | $ mkdir ~/flash_rootfs | ||
$ sudo tar | $ sudo tar xf tmp/deploy/images/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.tar.gz -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 | ||
$ 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 | $ 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 | ||
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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 -a /media/rootfs/opt/images ~/flash_rootfs/opt/ | ||
$ sudo cp /media/rootfs/usr/bin/*.sh ~/flash_rootfs/usr/bin | $ 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: | Boot the board, stop the autoboot to get to the U-Boot command line, and set the following environment variables: | ||
Revision as of 11:51, 5 May 2020
- Flash Yocto images from network
Flashing a complete Yocto system from Network using TFTP & NFS
NOTES:
- Please make sure your host system is ready to use TFTP/NFS. Use our Wiki if required: Yocto Setup TFTP/NFS
- This is a concept Wiki. Please adopt it to your system and your requirements.
- Android can be flashed in the same way.
Build minimal file system
To setup a Yocto 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/{{#var:MACHINE_NAME}}/core-image-minimal-{{#var:MACHINE_NAME}}.tar.gz -C ~/flash_rootfs
$ sudo cp tmp/deploy/images/{{#var:MACHINE_NAME}}/{{#var:KERNEL_IMAGE}} /tftpboot
$ for f in tmp/deploy/images/{{#var:MACHINE_NAME}}/*.dtb; do if [[ -L $f ]] && [[ $f != *{{#var:MACHINE_NAME}}.dtb ]]; then sudo cp $f /tftpboot/; fi done
$ sudo rename 's/{{#var:KERNEL_IMAGE}}-imx/imx/' /tftpboot/{{#var:KERNEL_IMAGE}}-*.dtb
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 .
You can update the images to use your images and/or customize install_yocto.sh to your requirements.