initramfs sometimes inflated, sometimes not
|Reported by:||dsd||Owned by:||wmb@…|
|Component:||ofw - open firmware||Version:||not specified|
|Deployments affected:||Action Needed:||no action|
I'm simulating the secure boot path with:
false to require-signatures? " \boot" pn-buf place " int:" load-from-list drop
I have found a difference between signed boot and unsigned boot and I'm not sure if its intentional, regarding decompression of the ramdisk.
In the unsigned path, $load-ramdisk calls boot-read, which calls (boot-read) and then ?inflate-loaded
In the secure path, bundle-present? calls (boot-read) directly and doesn't seem to inflate the ramdisk anywhere.
This can be seen by debugging linux-place-ramdisk and comparing the input parameters passed to that word. In the unsecure path, the len parameter is much bigger than the size of the on-disk ramdisk, whereas in the secure path the length matches the on-disk filesize exactly.
I haven't checked if the kernel handling path is more consistent.