diff --git a/metropolis/pkg/smbios/structures.go b/metropolis/pkg/smbios/structures.go
new file mode 100644
index 0000000..64ef523
--- /dev/null
+++ b/metropolis/pkg/smbios/structures.go
@@ -0,0 +1,177 @@
+package smbios
+
+import (
+	"time"
+)
+
+const (
+	structTypeBIOSInformation      = 0
+	structTypeSystemInformation    = 1
+	structTypeBaseboardInformation = 2
+	structTypeSystemSlot           = 9
+	structTypeMemoryDevice         = 17
+)
+
+// BIOSInformationRaw contains decoded data from the BIOS Information structure
+// (SMBIOS Type 0). See Table 6 in the specification for detailed documentation
+// about the individual fields. Note that structure versions 2.1 and 2.2 are
+// "invented" here as both characteristics extensions bytes were optional
+// between 2.0 and 2.4.
+type BIOSInformationRaw struct {
+	Handle                                 uint16
+	StructureVersion                       Version
+	Vendor                                 string
+	BIOSVersion                            string
+	BIOSStartingAddressSegment             uint16
+	BIOSReleaseDate                        string
+	BIOSROMSize                            uint8
+	BIOSCharacteristics                    uint64
+	BIOSCharacteristicsExtensionByte1      uint8 `smbios_min_ver:"2.1"`
+	BIOSCharacteristicsExtensionByte2      uint8 `smbios_min_ver:"2.2"`
+	SystemBIOSMajorRelease                 uint8 `smbios_min_ver:"2.4"`
+	SystemBIOSMinorRelease                 uint8
+	EmbeddedControllerFirmwareMajorRelease uint8
+	EmbeddedControllerFirmwareMinorRelease uint8
+	ExtendedBIOSROMSize                    uint16 `smbios_min_ver:"3.1"`
+}
+
+// ROMSizeBytes returns the ROM size in bytes
+func (rb *BIOSInformationRaw) ROMSizeBytes() uint64 {
+	if rb.StructureVersion.AtLeast(3, 1) && rb.BIOSROMSize == 0xFF {
+		// Top 2 bits are SI prefix (starting at mega, i.e. 1024^2), lower 14
+		// are value. x*1024^n => x << log2(1024)*n => x << 10*n
+		return uint64(rb.ExtendedBIOSROMSize&0x3fff) << 10 * uint64(rb.ExtendedBIOSROMSize&0xc00+2)
+	} else {
+		// (n+1) * 64KiB
+		return (uint64(rb.BIOSROMSize) + 1) * (64 * 1024)
+	}
+}
+
+// ReleaseDate returns the release date of the BIOS as a time.Time value.
+func (rb *BIOSInformationRaw) ReleaseDate() (time.Time, error) {
+	return time.Parse("01/02/2006", rb.BIOSReleaseDate)
+}
+
+// SystemInformationRaw contains decoded data from the System Information
+// structure (SMBIOS Type 1). See Table 10 in the specification for detailed
+// documentation about the individual fields.
+type SystemInformationRaw struct {
+	Handle           uint16
+	StructureVersion Version
+	Manufacturer     string
+	ProductName      string
+	Version          string
+	SerialNumber     string
+	UUID             [16]byte `smbios_min_ver:"2.1"`
+	WakeupType       uint8
+	SKUNumber        string `smbios_min_ver:"2.4"`
+	Family           string
+}
+
+// BaseboardInformationRaw contains decoded data from the BIOS Information
+// structure (SMBIOS Type 3). See Table 13 in the specification for detailed
+// documentation about the individual fields.
+type BaseboardInformationRaw struct {
+	Handle                         uint16
+	StructureVersion               Version
+	Manufacturer                   string
+	Product                        string
+	Version                        string
+	SerialNumber                   string
+	AssetTag                       string `smbios_min_ver:"2.1"`
+	FeatureFlags                   uint8
+	LocationInChassis              string
+	ChassisHandle                  uint16
+	BoardType                      uint8
+	NumberOfContainedObjectHandles uint8
+	ContainedObjectHandles         []uint16 `smbios_repeat:"NumberOfContainedObjectHandles"`
+}
+
+// SystemSlotRaw contains decoded data from the System Slot structure
+// (SMBIOS Type 9). See Table 44 in the specification for detailed documentation
+// about the individual fields.
+type SystemSlotRaw struct {
+	Handle               uint16
+	StructureVersion     Version
+	SlotDesignation      string
+	SlotType             uint8
+	SlotDataBusWidth     uint8
+	CurrentUsage         uint8
+	SlotLength           uint8
+	SlotID               uint16
+	SlotCharacteristics1 uint8
+	SlotCharacteristics2 uint8  `smbios_min_ver:"2.1"`
+	SegmentGroupNumber   uint16 `smbios_min_ver:"2.6"`
+	BusNumber            uint8
+	DeviceFunctionNumber uint8
+	DataBusWidth         uint8 `smbios_min_ver:"3.2"`
+	PeerGroupingCount    uint8
+	PeerGroups           []SystemSlotPeerRaw `smbios_repeat:"PeerGroupingCount"`
+	SlotInformation      uint8               `smbios_min_ver:"3.4"`
+	SlotPhysicalWidth    uint8
+	SlotPitch            uint16
+	SlotHeight           uint8 `smbios_min_ver:"3.5"`
+}
+
+type SystemSlotPeerRaw struct {
+	SegmentGroupNumber   uint16
+	BusNumber            uint8
+	DeviceFunctionNumber uint8
+	DataBusWidth         uint8
+}
+
+// MemoryDeviceRaw contains decoded data from the BIOS Information structure
+// (SMBIOS Type 17). See Table 76 in the specification for detailed
+// documentation about the individual fields.
+type MemoryDeviceRaw struct {
+	Handle                                  uint16
+	StructureVersion                        Version
+	PhysicalMemoryArrayHandle               uint16 `smbios_min_ver:"2.1"`
+	MemoryErrorInformationHandle            uint16
+	TotalWidth                              uint16
+	DataWidth                               uint16
+	Size                                    uint16
+	FormFactor                              uint8
+	DeviceSet                               uint8
+	DeviceLocator                           string
+	BankLocator                             string
+	MemoryType                              uint8
+	TypeDetail                              uint16
+	Speed                                   uint16 `smbios_min_ver:"2.3"`
+	Manufacturer                            string
+	SerialNumber                            string
+	AssetTag                                string
+	PartNumber                              string
+	Attributes                              uint8  `smbios_min_ver:"2.6"`
+	ExtendedSize                            uint32 `smbios_min_ver:"2.7"`
+	ConfiguredMemorySpeed                   uint16
+	MinimumVoltage                          uint16 `smbios_min_ver:"2.8"`
+	MaximumVoltage                          uint16
+	ConfiguredVoltage                       uint16
+	MemoryTechnology                        uint8 `smbios_min_ver:"3.2"`
+	MemoryOperatingModeCapability           uint16
+	FirmwareVersion                         uint8
+	ModuleManufacturerID                    uint16
+	ModuleProductID                         uint16
+	MemorySubsystemControllerManufacturerID uint16
+	MemorySubsystemControllerProductID      uint16
+	NonVolatileSize                         uint64
+	VolatileSize                            uint64
+	CacheSize                               uint64
+	LogicalSize                             uint64
+	ExtendedSpeed                           uint32 `smbios_min_ver:"3.3"`
+	ExtendedConfiguredMemorySpeed           uint32
+}
+
+func (md *MemoryDeviceRaw) SizeBytes() (uint64, bool) {
+	if md.Size == 0 || md.Size == 0xFFFF {
+		// Device unpopulated / unknown memory, return ok false
+		return 0, false
+	}
+	if md.Size == 0x7FFF && md.StructureVersion.AtLeast(2, 7) {
+		// Bit 31 is reserved, rest is memory size in MiB
+		return uint64(md.ExtendedSize&0x7FFFFFFF) * (1024 * 1024), true
+	}
+	// Bit 15 flips between KiB and MiB, rest is size
+	return uint64(md.Size&0x7FFF) << 10 * uint64(md.Size&0x8000+1), true
+}