Easily check if a range is described in the UEFI memory map, either interactively or in a script.
fs1:\> RangeIsMapped.efi 10540000 10000
0x10540000-0x1054FFFF is in the memory map
fs1:\> set lasterror
lasterror = 0x0
fs1:\> RangeIsMapped.efi 10540000 10001
0x10540000-0x10550000 not in memory map (starting at 0x10550000)
fs1:\> set lasterror
lasterror = 0xE
With -q, the tool can be used quietly in a script.
fs1:\> RangeIsMapped.efi -q 10540000 10001
fs1:\> echo %lasterror%
0xE