The asinfo section contains trees describing address spaces (where RAM, ROM, flash, etc. are located).
The general hierarchy for address spaces is:
/memory/memclass/....
Or:
/io/memclass/....
Or:
/memory/io/memclass/....
The memory or io indicates whether this is describing something in the memory or I/O address space (the third form is used on a machine without separate in/out instructions and where everything is memory-mapped).
The memclass is something like: ram, rom, flash, etc. Below that would be further classifications, allowing the process manager to provide typed memory support.