Removing not needed files from bootfs

Technical Support
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Hi @mkock !

I just tested the approach shown in the article Custom meta layers, recipes and images in Yocto Project (hello-world examples) | Toradex Developer Center, specifically the creation of the <machine>-extra.conf in the custom layer.

By doing this:

# meta-custom/conf/machine/apalis-imx6-extra.conf
KERNEL_DEVICETREE = "xablau.dtb"

I got the same result as you:

user@oe/build$ bitbake tdx-reference-minimal-image -e | grep "^KERNEL_DEVICETREE="                                                      
KERNEL_DEVICETREE="xablau.dtb imx6q-apalis-ixora-v1.2.dtb imx6q-apalis-eval.dtb imx6q-apalis-ixora.dtb                       imx6q-apalis-ixora-v1.1.dtb"

But, if I use the machine override:

# meta-custom/conf/machine/apalis-imx6-extra.conf
KERNEL_DEVICETREE:apalis-imx6 = "xablau.dtb"

I get the desired result:

user@oe/build$ bitbake tdx-reference-minimal-image -e | grep "^KERNEL_DEVICETREE="                                                      
KERNEL_DEVICETREE="xablau.dtb"

Hopefully, this solves your issue :slight_smile:

I actually need to study more to directly answer this question :sweat_smile:

But I am sure the answer is in plain text in OpenEmbedded’s / Bitbake’s (huge) documentation :wink:

Best regards,