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