struc E820AddressRange
| .BaseAddrLow | Low 32 bits of Base Address |
| .BaseAddrHigh | High 32 Bits of Base Address |
| .LengthLow | Low 32 Bits of Length in Bytes |
| .LengthHigh | High 32 Bits of Length in Bytes |
| .Type | Address type of this range. See Memory type |
struc E820AddressRange
memory_e820_get_map
memory_get_for_large_conf
memory_get_map