Hey, I'm trying to implement a bootloader-signing mechanism within yocto for extended secure-boot support. The bootloader and it's recipes are provided by NXP (in this case it's the imx-boot_*.bb recipe from meta-freescale) and I want to use a secondary recipe which I am creating to sign the resulting boot binary. My issue is that the NXP code signing tool needs some info about the binary to sign. These details are send to stdout by imx-mkimage tool, which is called by the imx boot makefile (used here: https://github.com/Freescale/meta-freescale/blob/master/recipes-bsp/imx-mkimage/imx-boot_0.2.bb#L104).
I can override the compile step of imx-boot to save stdout into a file, deploy this file and later parse it to extract the offset dump, but that feels "ugly" and the file is by no means a output of the imx-boot recipe for the target system, but for another step. Is there any recommended way to parse such variable metadata between recipes? Olli
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