HP/HPE DIMM Attributes Record (Type 232)

Source: dmidecode, dmioem.c. No dumps of the data corpus hold the structure.

Tells what the memory device structure (type 17) of a DIMM socket does not: whether the module is an HPE one, and the voltages it runs at. There is a record for each socket. The structure is decoded from Gen9 onwards, and the shortest structures end after the configured voltage, at 0x0E.

Table 1. HP/HPE DIMM Attributes Record structure
Offset	Version	Name	Length	Value	Description
`0x00`	2.0+	Type	`BYTE`	`232`	HP/HPE DIMM Attributes Record indicator
`0x01`	2.0+	Length	`BYTE`	Varies	Length of the structure
`0x02`	2.0+	Handle	`WORD`	Varies
`0x04`	2.0+	Memory Device Handle	`WORD`	`HANDLE`	Handle of the memory device structure (type 17)
`0x06`	2.0+	Attributes	`DWORD`	`BITFIELD`	Bits 0-1: HPE SmartMemory, `0` no, `1` yes, others unknown. Bit 2: bit 3 is defined, bit 3: load reduced DIMM. Bit 4: bit 5 is defined, bit 5: HPE standard memory
`0x0A`	2.0+	Minimum Voltage	`WORD`	`NUMBER`	Minimum operating voltage in millivolts, zero if unknown
`0x0C`	2.0+	Configured Voltage	`WORD`	`NUMBER`	Configured operating voltage in millivolts, zero if unknown
`0x0E`	2.0+	Reserved	20 BYTEs	Varies
`0x22`	2.0+	Map-Out Reason	`BYTE`	`BITFIELD`	Bit 0: configuration error, bit 1: training error
`0x23`	2.0+	Encryption Status	`BYTE`	`ENUM`	`0`: not encrypted, `1`: encrypted, `2`: unknown, `3`: not supported