Hey all,
I have a SoC which does secure boot in a multi staged process. (ROM loads a signed SPL to an aux core, which loads another signed SPL to main core, which loads a signed u-boot.img)
But the thing I want u-boot to load, verify signature and then run/boot is a standalone binary app, not a Linux Kernel. (It does work fine when I load that and run it with the "go" command, but no signature verification is done as of now)
All the research I did pointed towards using signed FIT images and then "bootm" to do the verification and loading. But I cannot get "bootm" to load a FIT containing only my raw binary standalone app.
Is that road a dead-end and I need to do something completely else?
I would love to stay as close to vanilla u-boot (or at least the SDK vanilla version) and not implement a fully custom signature verification.
Any pointers would be highly appreciated.
kind regards Fabian
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