Add parse_memmap.py script

scripts/parse_memmap.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+
+from struct import unpack_from, calcsize
+import sys
+
+memory_type_names = {
+     0: "EfiReservedMemoryType",
+     1: "EfiLoaderCode",
+     2: "EfiLoaderData",
+     3: "EfiBootServicesCode",
+     4: "EfiBootServicesData",
+     5: "EfiRuntimeServicesCode",
+     6: "EfiRuntimeServicesData",
+     7: "EfiConventionalMemory",
+     8: "EfiUnusableMemory",
+     9: "EfiACPIReclaimMemory",
+    10: "EfiACPIMemoryNVS",
+    11: "EfiMemoryMappedIO",
+    12: "EfiMemoryMappedIOPortSpace",
+    13: "EfiPalCode",
+    14: "EfiPersistentMemory",
+
+    0x80000000: "Kernel Image",
+    0x80000001: "Kernel Data",
+}
+
+EFI_MEMORY_UC = 0x0000000000000001
+EFI_MEMORY_WC = 0x0000000000000002
+EFI_MEMORY_WT = 0x0000000000000004
+EFI_MEMORY_WB = 0x0000000000000008
+EFI_MEMORY_UCE = 0x0000000000000010
+EFI_MEMORY_WP = 0x0000000000001000
+EFI_MEMORY_RP = 0x0000000000002000
+EFI_MEMORY_XP = 0x0000000000004000
+EFI_MEMORY_NV = 0x0000000000008000
+EFI_MEMORY_MORE_RELIABLE = 0x0000000000010000
+EFI_MEMORY_RO = 0x0000000000020000
+EFI_MEMORY_RUNTIME = 0x8000000000000000
+
+fmt = "LQQQQQ"
+size = calcsize(fmt)
+
+print("Descriptor size: {} bytes\n".format(size))
+if size != 48:
+    sys.exit(1)
+
+data = open(sys.argv[1], 'rb').read()
+length = len(data)
+consumed = 0
+
+while length - consumed > size:
+    memtype, phys, virt, pages, attr, pad = unpack_from(fmt, data, consumed)
+    consumed += size
+    if pages == 0: break
+
+    memtype = memory_type_names.get(memtype, "{:016x}".format(memtype))
+    runtime = {EFI_MEMORY_RUNTIME: "*"}.get(attr & EFI_MEMORY_RUNTIME, " ")
+
+    print("{:>23}{} {:016x} {:016x} [{:4d}]".format(memtype, runtime, phys, virt, pages))
+