Hi I would like to integrate Standard Boot on our custom board based on NXP LS1028a, as it currently uses a so-called distro boot. Normally I would just follow the instructions in the doc about converting from distro boot to standard boot, but things are in fact a bit more complicated. My board supports dual rootfs following the A/B update scheme, so I need a place where I can check the boot state, boot counter and so on, so as to set the final rootfs partition to pass to the kernel. That's actually not a problem - I can just use the bootmeth script and put all the logic there. The problem is that on a production system, the devics will be protected by the Secure Boot procedure, so the script to be executed should also be verified before the execution. In the current solution (distro boot), the boot command, first loads the script, then calls esbc_validate over the script header and if the validation passes it sources the script so the OS can be loaded. In current bootmeth_script there is no place (or I'm not aware of) that would allow me to do vendor-specific validation over the script. What would you advise in this case? Is there any way to "inject" some plugins into the existing boot methods, like e.g. a plugin that would be overriding or adding some functionalities to existing bootmeth_script? I can of course patch the existing bootmeth_script with a command that would perform the validation but this would no longer be a generic boot method. Or perhaps should I create my own boot method?
I would be grateful for any suggestion Best regards Patryk
