Difference between revisions of "RSB-3720 Ubunut creation by Yocto30 kernel"
From ESS-WIKI
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*<span style="font-size:medium;">'''Unpack rootfs.wic'''</span> | *<span style="font-size:medium;">'''Unpack rootfs.wic'''</span> | ||
| − | :<span style="font-size:large;"><code>＄sudo bzip2 -d | + | :<span style="font-size:large;"><code>＄sudo bzip2 -d <span style="color:#9b59b6;">'''${rootfs.wic_IMAGE}.'''</span>bz2</code></span> |
:[[File:RSB-3720 unpack yocto30 image.png|RTENOTITLE]] | :[[File:RSB-3720 unpack yocto30 image.png|RTENOTITLE]] | ||
| Line 38: | Line 38: | ||
*<span style="font-size:medium;">'''Mount Yocto image and Ubuntu image Partition2'''</span> | *<span style="font-size:medium;">'''Mount Yocto image and Ubuntu image Partition2'''</span> | ||
| − | :<span style="font-size:large;"><code>＄sudo losetup --show -f -P | + | :<span style="font-size:large;"><code>＄sudo losetup --show -f -P <span style="color:#9b59b6;">'''${rootfs.wic_IMAGE}'''</span></code></span> |
:<span style="font-size:large;"><span style="font-size:large;"><code>＄sudo mount /dev/loop22p2 yocto/rootfs/</code></span></span> | :<span style="font-size:large;"><span style="font-size:large;"><code>＄sudo mount /dev/loop22p2 yocto/rootfs/</code></span></span> | ||
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:<span style="font-size:large;"><code>sudo losetup -d /dev/loop23</code></span> | :<span style="font-size:large;"><code>sudo losetup -d /dev/loop23</code></span> | ||
| − | :[[File:RSB-3720 Ubunut creation by Yocto30 kernel Remove virtual device.png|RTENOTITLE]] | + | :[[File:RSB-3720 Ubunut creation by Yocto30 kernel Remove virtual device.png|RTENOTITLE]] |
| + | | ||
| + | == '''Flash target image''' == | ||
| − | == ''' | + | *<span style="font-size:medium;">'''Creating boot-up on-board flash from built sdcard image'''</span> |
| + | |||
| + | :<span style="font-size:large;"><code>$ sudo dd if=<span style="color:#9b59b6;">'''${rootfs.wic_IMAGE}'''</span> of=/dev/sde bs=1M conv=fsync</code></span> | ||
| + | |||
| + | :[[File:RSB-3720 Ubunut creation by Yocto30 kernel Flash target image.png|RTENOTITLE]] | ||
| − | + | == '''Complete''' == | |
| − | + | *'''<span style="font-size:medium;">Pleace insert SDcard to target machine, You can see Ubuntu Desktop on the monitor.</span>''' | |
| − | :[[File:RSB-3720 Ubunut creation by Yocto30 kernel | + | :[[File:RSB-3720 Ubunut creation by Yocto30 kernel Complete.jpg|RTENOTITLE]] |
Revision as of 08:19, 18 August 2023
Contents
Prepare Image
- Build Yocto Linux image with your expected version (e.g. A0386)
- You can follow this SOP to build your Yocto image.
- Modify kernel to "Add commit to support the Ubuntu desktop version"
- Prepare Ubuntu image (e.g. A0362)
Mount image
- You can find Yocto image in${WORKSPACE}/build/tmp/deplay/image/${MC}, and copy to your ${WORKSPACE}.
$ sudo cp –a imx-image-${MC}-20230816082527.rootfs.wic.bz2 ${WORKSPACE}.
- Unpack rootfs.wic
＄sudo bzip2 -d ${rootfs.wic_IMAGE}.bz2
- Create folders to mount
＄mkdir ubuntu yocto
＄mkdir ubuntu/rootfs yocto/rootfs
- Mount Yocto image and Ubuntu image Partition2
＄sudo losetup --show -f -P ${rootfs.wic_IMAGE}
＄sudo mount /dev/loop22p2 yocto/rootfs/
＄sudo losetup --show -f -P 3720A1AIM30UIVA0362_iMX8MP_4G_2021-11-29.img
＄sudo mount /dev/loop23p2 ubuntu/rootfs/
Change rootfs
- Copy Yocto module to${WORKSPACE}, then you can find Yocto module in rootfs/lib
$ sudo cp -a yocto/rootfs/lib/modules/ /home/adv/
- Delete under Yocto rootfs all files, and replace to Ubuntu rootfs
$ sudo rm -rf yocto/rootfs/
$ sudo cd ubuntu/rootfs/
$ sudo cp -a bin boot dev etc home lib media mnt opt proc root run sbin srv swapfile sys tmp usr var ~/yocto/rootfs/
- Repalce with Yocto module
$ cd ~/yocto/roosfs/lib
$ sudo rm -rf modules/
$ sudo cp -a ~/modules ~/yocto/rootfs/lib/
Analyze dependency file
- Enter target image root directory
$ sudo chroot rootfs/
- Analyze file replaced by module dependencies
$ depmod -a 5.4.70-2.3.0/
Umount target image
- Umount rootfs
$ exit
$ sudo umount ~/yocto/rootfs/
$ sudo umount ~/ubuntu/rootfs/
- Remove virtual device
sudo losetup -d /dev/loop22
sudo losetup -d /dev/loop23
Flash target image
- Creating boot-up on-board flash from built sdcard image
$ sudo dd if=${rootfs.wic_IMAGE} of=/dev/sde bs=1M conv=fsync
Complete
- Pleace insert SDcard to target machine, You can see Ubuntu Desktop on the monitor.
