How to build file .wic

[ThinhNguyen_FE]

Dear NXP, 

I tried to build Yocto as following instruction:  DISTRO=fsl-imx-wayland MACHINE=imx8mp-lpddr4-evk source imx-setup-release.sh -b imx8mp_build_wayland
bitbake imx-image-core

It was succeed. 

However, i cannot find the .wic file after building. 

I will use this file with UUU Tool to import to board. 

As checked, i can find this . wic file in NXP's document. but i cannot build it

Please help to check and guide. 

Brgs, 

Thinh

[brian14]

Hi @ThinhNguyen_FE, 

After you successfully build your image with The Yocto Project, you will need to go to the following path:

<BSP-Folder>/<Your-Build-Folder>/tmp/deploy/images/imx8mp-lpddr4-evk/

BSP Folder: This is the folder where you located the BSP on your host.
Build Folder: This is the folder you named as imx8mp_build_wayland in your instruction (DISTRO=fsl-imx-wayland MACHINE=imx8mp-lpddr4-evk source imx-setup-release.sh -b imx8mp_build_wayland)

On this path you will find some files. Your required file is imx-image-core-imx8mp-lpddr4-evk.wic.zst.
You only need to decompress this file to obtain the .wic file.
Finally, use the UUU tool.

I hope this information will be helpful.

[ThinhNguyen_FE]

Hi Brian, 

I followed your instruction. 

However, i only saw the xxx.rootfs.wic.zst file 

can not import with this file. 

btw, i also see the  xxx-lpddr4-evk.wic.zst. file. however, this file has only 1kB. 

something wrong ? 

Please help me check. 

Brgs, 

Thinh

[roke]

If  you use ls -l, you will find xxx-lpddr4-evk.wic.zs is a symbol link to current build.

[brian14]

Hi @ThinhNguyen_FE, 

Thank you for your reply.

Based on your images, your outputs are correct, but the build process had errors.

Please try to restart the build process using the following command:

1. First, use the command
bitbake -c cleanall
This command will help us to clean the entire component build component.
2. Then, we will need to clean the cache related to the build progress saved by bitbake.
bitbake -c cleansstate

After these commands apply the bitbake command that you are using

bitbake imx-image-core

Have a great day!

[Blake001]

I have the same issue wich only a rootfs.wix.zst generated, and I tried bitbake -c cleanall and bitbake -c cleansstate and rebuild, still the same. What should I do?

[Blake001]

so the rootfs.wix is diiferent to the .wix right? Per my understanding, the rootfs.wix doesn't contain the image and bootloader and dtb? However, if it is just for the rootfs, why we need a wic file?

[roke]

rootfs is a root flies system. it doesn't have and technically could not have dtb, Image, boot loader, etc. 

[Blake001]

It actually contains the dtb, image but no bootloader, I just used a bootloader to flash it to the evk board