for various purposes, including securing the boot process, we identified
the requirement to query the last used boot path from within the booted
system. That would also allow, among other things, to remove the need
for setting a specific rootfs in each ebg environment and rather derive
it from that query inside an initramfs e.g.
Options to provide this feature:
a) add a command line tool that queries all ebg environments to figure
out which one was last booted -> is the exist state space sufficient
to derive that information?
b) pass information which environment (partition?) ebg chose to the
kernel it boots via
b1) pseudo parameter to the kernel -> not nice as that pollutes the
parameter namespace of the kernel binary
b2) via some variable that get resolved when building the kernel
Any ideas, comments, suggestions on this?
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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