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AM623: Binman tool: How to add the fitImage public key signature into u-boot.dtb from u-boot.img

Part Number: AM623


Tool/software:

We are using PKCS11 engine to sign the fitImage. We are using our custom key-name for the fitImage key instead of custMpk.

In the do_uboot_assemble_fitimage from uboot-sign.bbclass, the fitImage public key was added into the u-boot.dtb signature node.

However, when it ran the binman build in the do_uboot_assemble_fitimage, the signature node in the u-boot.dtb is missing from the generated u-boot.img.

May I know how can I actually added the signature using binman tool?