mirror of
https://github.com/xcat2/confluent.git
synced 2026-06-08 08:38:33 +00:00
Jarrod Johnson
bfc27595dc
If someone asks for it independently, we can break it out again. But for now, assume it's only for confluent.
840 lines
26 KiB
Python
840 lines
26 KiB
Python
# Copyright 2015 Lenovo
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""This implements parsing of DDR SPD data. This is offered up in a pass
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through fashion by some service processors.
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For now, just doing DDR3 and DDR4
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In many cases, astute readers will note that some of the lookup tables
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should be a matter of math rather than lookup. However the SPD
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specification explicitly reserves values not in the lookup tables for
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future use. It has happened, for example, that a spec was amended
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with discontinuous values for a field that was until that point
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possible to derive in a formulaic way
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"""
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import math
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import struct
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jedec_ids = [
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{
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0x01: "AMD",
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0x02: "AMI",
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0x83: "Fairchild",
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0x04: "Fujitsu",
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0x85: "GTE",
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0x86: "Harris",
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0x07: "Hitachi",
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0x08: "Inmos",
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0x89: "Intel",
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0x8a: "I.T.T.",
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0x0b: "Intersil",
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0x8c: "Monolithic Memories",
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0x0d: "Mostek",
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0x0e: "Motorola",
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0x8f: "National",
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0x10: "NEC",
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0x91: "RCA",
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0x92: "Raytheon",
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0x13: "Conexant (Rockwell)",
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0x94: "Seeq",
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0x15: "Philips Semi. (Signetics)",
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0x16: "Synertek",
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0x97: "Texas Instruments",
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0x98: "Toshiba",
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0x19: "Xicor",
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0x1a: "Zilog",
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0x9b: "Eurotechnique",
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0x1c: "Mitsubishi",
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0x9d: "Lucent (AT&T)",
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0x9e: "Exel",
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0x1f: "Atmel",
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0x20: "SGS/Thomson",
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0xa1: "Lattice Semi.",
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0xa2: "NCR",
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0x23: "Wafer Scale Integration",
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0xa4: "IBM",
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0x25: "Tristar",
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0x26: "Visic",
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0xa7: "Intl. CMOS Technology",
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0xa8: "SSSI",
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0x29: "Microchip Technology",
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0x2a: "Ricoh Ltd.",
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0xab: "VLSI",
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0x2c: "Micron Technology",
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0xad: "Hyundai Electronics",
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0xae: "OKI Semiconductor",
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0x2f: "ACTEL",
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0xb0: "Sharp",
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0x31: "Catalyst",
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0x32: "Panasonic",
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0xb3: "IDT",
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0x34: "Cypress",
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0xb5: "DEC",
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0xb6: "LSI Logic",
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0x37: "Zarlink",
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0x38: "UTMC",
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0xb9: "Thinking Machine",
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0xba: "Thomson CSF",
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0x3b: "Integrated CMOS(Vertex)",
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0xbc: "Honeywell",
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0x3d: "Tektronix",
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0x3e: "Sun Microsystems",
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0xbf: "SST",
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0x40: "MOSEL",
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0xc1: "Infineon",
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0xc2: "Macronix",
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0x43: "Xerox",
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0xc4: "Plus Logic",
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0x45: "SunDisk",
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0x46: "Elan Circuit Tech.",
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0xc7: "European Silicon Str.",
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0xc8: "Apple Computer",
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0xc9: "Xilinx",
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0x4a: "Compaq",
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0xcb: "Protocol Engines",
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0x4c: "SCI",
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0xcd: "Seiko Instruments",
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0xce: "Samsung",
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0x4f: "I3 Design System",
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0xd0: "Klic",
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0x51: "Crosspoint Solutions",
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0x52: "Alliance Semiconductor",
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0xd3: "Tandem",
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0x54: "Hewlett-Packard",
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0xd5: "Intg. Silicon Solutions",
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0xd6: "Brooktree",
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0x57: "New Media",
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0x58: "MHS Electronic",
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0xd9: "Performance Semi.",
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0xda: "Winbond Electronic",
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0x5b: "Kawasaki Steel",
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0xdc: "Bright Micro",
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0x5d: "TECMAR",
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0x5e: "Exar",
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0xdf: "PCMCIA",
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0xe0: "LG Semiconductor",
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0x61: "Northern Telecom",
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0x62: "Sanyo",
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0xe3: "Array Microsystems",
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0x64: "Crystal Semiconductor",
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0xe5: "Analog Devices",
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0xe6: "PMC-Sierra",
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0x67: "Asparix",
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0x68: "Convex Computer",
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0xe9: "Quality Semiconductor",
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0xea: "Nimbus Technology",
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0x6b: "Transwitch",
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0xec: "Micronas (ITT Intermetall)",
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0x6d: "Cannon",
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0x6e: "Altera",
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0xef: "NEXCOM",
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0x70: "QUALCOMM",
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0xf1: "Sony",
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0xf2: "Cray Research",
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0x73: "AMS (Austria Micro)",
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0xf4: "Vitesse",
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0x75: "Aster Electronics",
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0x76: "Bay Networks (Synoptic)",
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0xf7: "Zentrum",
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0xf8: "TRW",
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0x79: "Thesys",
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0x7a: "Solbourne Computer",
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0xfb: "Allied-Signal",
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0x7c: "Dialog",
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0xfd: "Media Vision",
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0xfe: "Level One Communication",
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},
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{
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0x01: "Cirrus Logic",
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0x02: "National Instruments",
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0x83: "ILC Data Device",
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0x04: "Alcatel Mietec",
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0x85: "Micro Linear",
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0x86: "Univ. of NC",
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0x07: "JTAG Technologies",
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0x08: "Loral",
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0x89: "Nchip",
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0x8A: "Galileo Tech",
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0x0B: "Bestlink Systems",
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0x8C: "Graychip",
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0x0D: "GENNUM",
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0x0E: "VideoLogic",
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0x8F: "Robert Bosch",
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0x10: "Chip Express",
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0x91: "DATARAM",
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0x92: "United Microelec Corp.",
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0x13: "TCSI",
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0x94: "Smart Modular",
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0x15: "Hughes Aircraft",
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0x16: "Lanstar Semiconductor",
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0x97: "Qlogic",
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0x98: "Kingston",
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0x19: "Music Semi",
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0x1A: "Ericsson Components",
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0x9B: "SpaSE",
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0x1C: "Eon Silicon Devices",
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0x9D: "Programmable Micro Corp",
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0x9E: "DoD",
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0x1F: "Integ. Memories Tech.",
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0x20: "Corollary Inc.",
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0xA1: "Dallas Semiconductor",
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0xA2: "Omnivision",
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0x23: "EIV(Switzerland)",
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0xA4: "Novatel Wireless",
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0x25: "Zarlink (formerly Mitel)",
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0x26: "Clearpoint",
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0xA7: "Cabletron",
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0xA8: "Silicon Technology",
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0x29: "Vanguard",
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0x2A: "Hagiwara Sys-Com",
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0xAB: "Vantis",
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0x2C: "Celestica",
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0xAD: "Century",
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0xAE: "Hal Computers",
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0x2F: "Rohm Company Ltd.",
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0xB0: "Juniper Networks",
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0x31: "Libit Signal Processing",
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0x32: "Enhanced Memories Inc.",
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0xB3: "Tundra Semiconductor",
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0x34: "Adaptec Inc.",
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0xB5: "LightSpeed Semi.",
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0xB6: "ZSP Corp.",
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0x37: "AMIC Technology",
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0x38: "Adobe Systems",
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0xB9: "Dynachip",
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0xBA: "PNY Electronics",
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0x3B: "Newport Digital",
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0xBC: "MMC Networks",
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0x3D: "T Square",
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0x3E: "Seiko Epson",
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0xBF: "Broadcom",
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0x40: "Viking Components",
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0xC1: "V3 Semiconductor",
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0xC2: "Flextronics (formerly Orbit)",
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0x43: "Suwa Electronics",
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0xC4: "Transmeta",
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0x45: "Micron CMS",
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0x46: "American Computer & Digital Components Inc",
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0xC7: "Enhance 3000 Inc",
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0xC8: "Tower Semiconductor",
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0x49: "CPU Design",
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0x4A: "Price Point",
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0xCB: "Maxim Integrated Product",
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0x4C: "Tellabs",
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0xCD: "Centaur Technology",
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0xCE: "Unigen Corporation",
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0x4F: "Transcend Information",
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0xD0: "Memory Card Technology",
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0x51: "CKD Corporation Ltd.",
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0x52: "Capital Instruments, Inc.",
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0xD3: "Aica Kogyo, Ltd.",
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0x54: "Linvex Technology",
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0xD5: "MSC Vertriebs GmbH",
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0xD6: "AKM Company, Ltd.",
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0x57: "Dynamem, Inc.",
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0x58: "NERA ASA",
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0xD9: "GSI Technology",
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0xDA: "Dane-Elec (C Memory)",
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0x5B: "Acorn Computers",
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0xDC: "Lara Technology",
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0x5D: "Oak Technology, Inc.",
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0x5E: "Itec Memory",
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0xDF: "Tanisys Technology",
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0xE0: "Truevision",
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0x61: "Wintec Industries",
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0x62: "Super PC Memory",
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0xE3: "MGV Memory",
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0x64: "Galvantech",
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0xE5: "Gadzoox Nteworks",
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0xE6: "Multi Dimensional Cons.",
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0x67: "GateField",
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0x68: "Integrated Memory System",
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0xE9: "Triscend",
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0xEA: "XaQti",
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0x6B: "Goldenram",
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0xEC: "Clear Logic",
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0x6D: "Cimaron Communications",
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0x6E: "Nippon Steel Semi. Corp.",
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0xEF: "Advantage Memory",
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0x70: "AMCC",
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0xF1: "LeCroy",
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0xF2: "Yamaha Corporation",
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0x73: "Digital Microwave",
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0xF4: "NetLogic Microsystems",
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0x75: "MIMOS Semiconductor",
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0x76: "Advanced Fibre",
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0xF7: "BF Goodrich Data.",
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0xF8: "Epigram",
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0x79: "Acbel Polytech Inc.",
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0x7A: "Apacer Technology",
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0xFB: "Admor Memory",
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0x7C: "FOXCONN",
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0xFD: "Quadratics Superconductor",
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0xFE: "3COM",
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},
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{
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0x01: "Camintonn Corporation",
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0x02: "ISOA Incorporated",
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0x83: "Agate Semiconductor",
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0x04: "ADMtek Incorporated",
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0x85: "HYPERTEC",
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0x86: "Adhoc Technologies",
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0x07: "MOSAID Technologies",
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0x08: "Ardent Technologies",
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0x89: "Switchcore",
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0x8A: "Cisco Systems, Inc.",
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0x0B: "Allayer Technologies",
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0x8C: "WorkX AG",
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0x0D: "Oasis Semiconductor",
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0x0E: "Novanet Semiconductor",
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0x8F: "E-M Solutions",
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0x10: "Power General",
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0x91: "Advanced Hardware Arch.",
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0x92: "Inova Semiconductors GmbH",
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0x13: "Telocity",
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0x94: "Delkin Devices",
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0x15: "Symagery Microsystems",
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0x16: "C-Port Corporation",
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0x97: "SiberCore Technologies",
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0x98: "Southland Microsystems",
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0x19: "Malleable Technologies",
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0x1A: "Kendin Communications",
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0x9B: "Great Technology Microcomputer",
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0x1C: "Sanmina Corporation",
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0x9D: "HADCO Corporation",
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0x9E: "Corsair",
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0x1F: "Actrans System Inc.",
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0x20: "ALPHA Technologies",
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0xA1: "Cygnal Integrated Products Incorporated",
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0xA2: "Artesyn Technologies",
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0x23: "Align Manufacturing",
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0xA4: "Peregrine Semiconductor",
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0x25: "Chameleon Systems",
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0x26: "Aplus Flash Technology",
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0xA7: "MIPS Technologies",
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0xA8: "Chrysalis ITS",
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0x29: "ADTEC Corporation",
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0x2A: "Kentron Technologies",
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0xAB: "Win Technologies",
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0x2C: "ASIC Designs Inc",
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0xAD: "Extreme Packet Devices",
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0xAE: "RF Micro Devices",
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0x2F: "Siemens AG",
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0xB0: "Sarnoff Corporation",
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0x31: "Itautec Philco SA",
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0x32: "Radiata Inc.",
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0xB3: "Benchmark Elect. (AVEX)",
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0x34: "Legend",
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0xB5: "SpecTek Incorporated",
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0xB6: "Hi/fn",
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0x37: "Enikia Incorporated",
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0x38: "SwitchOn Networks",
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0xB9: "AANetcom Incorporated",
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0xBA: "Micro Memory Bank",
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0x3B: "ESS Technology",
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0xBC: "Virata Corporation",
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0x3D: "Excess Bandwidth",
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0x3E: "West Bay Semiconductor",
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0xBF: "DSP Group",
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0x40: "Newport Communications",
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0xC1: "Chip2Chip Incorporated",
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0xC2: "Phobos Corporation",
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0x43: "Intellitech Corporation",
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0xC4: "Nordic VLSI ASA",
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0x45: "Ishoni Networks",
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0x46: "Silicon Spice",
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0xC7: "Alchemy Semiconductor",
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0xC8: "Agilent Technologies",
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0x49: "Centillium Communications",
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0x4A: "W.L. Gore",
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0xCB: "HanBit Electronics",
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0x4C: "GlobeSpan",
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0xCD: "Element 14",
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0xCE: "Pycon",
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0x4F: "Saifun Semiconductors",
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0xD0: "Sibyte, Incorporated",
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0x51: "MetaLink Technologies",
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0x52: "Feiya Technology",
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0xD3: "I & C Technology",
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0x54: "Shikatronics",
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0xD5: "Elektrobit",
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0xD6: "Megic",
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0x57: "Com-Tier",
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0x58: "Malaysia Micro Solutions",
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0xD9: "Hyperchip",
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0xDA: "Gemstone Communications",
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0x5B: "Anadyne Microelectronics",
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0xDC: "3ParData",
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0x5D: "Mellanox Technologies",
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0x5E: "Tenx Technologies",
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0xDF: "Helix AG",
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0xE0: "Domosys",
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0x61: "Skyup Technology",
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0x62: "HiNT Corporation",
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0xE3: "Chiaro",
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0x64: "MCI Computer GMBH",
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0xE5: "Exbit Technology A/S",
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0xE6: "Integrated Technology Express",
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0x67: "AVED Memory",
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0x68: "Legerity",
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0xE9: "Jasmine Networks",
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0xEA: "Caspian Networks",
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0x6B: "nCUBE",
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0xEC: "Silicon Access Networks",
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0x6D: "FDK Corporation",
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0x6E: "High Bandwidth Access",
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0xEF: "MultiLink Technology",
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0x70: "BRECIS",
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0xF1: "World Wide Packets",
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0xF2: "APW",
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0x73: "Chicory Systems",
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0xF4: "Xstream Logic",
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0x75: "Fast-Chip",
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0x76: "Zucotto Wireless",
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0xF7: "Realchip",
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0xF8: "Galaxy Power",
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0x79: "eSilicon",
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0x7A: "Morphics Technology",
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0xFB: "Accelerant Networks",
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0x7C: "Silicon Wave",
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0xFD: "SandCraft",
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0xFE: "Elpida",
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},
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{
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0x01: "Solectron",
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0x02: "Optosys Technologies",
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0x83: "Buffalo (Formerly Melco)",
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0x04: "TriMedia Technologies",
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0x85: "Cyan Technologies",
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0x86: "Global Locate",
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0x07: "Optillion",
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0x08: "Terago Communications",
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0x89: "Ikanos Communications",
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0x8A: "Princeton Technology",
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0x0B: "Nanya Technology",
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0x8C: "Elite Flash Storage",
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0x0D: "Mysticom",
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0x0E: "LightSand Communications",
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0x8F: "ATI Technologies",
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0x10: "Agere Systems",
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0x91: "NeoMagic",
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0x92: "AuroraNetics",
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0x13: "Golden Empire",
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0x94: "Muskin",
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0x15: "Tioga Technologies",
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0x16: "Netlist",
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0x97: "TeraLogic",
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0x98: "Cicada Semiconductor",
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0x19: "Centon Electronics",
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0x1A: "Tyco Electronics",
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0x9B: "Magis Works",
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0x1C: "Zettacom",
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0x9D: "Cogency Semiconductor",
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0x9E: "Chipcon AS",
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0x1F: "Aspex Technology",
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0x20: "F5 Networks",
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0xA1: "Programmable Silicon Solutions",
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0xA2: "ChipWrights",
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0x23: "Acorn Networks",
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0xA4: "Quicklogic",
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0x25: "Kingmax Semiconductor",
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0x26: "BOPS",
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0xA7: "Flasys",
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0xA8: "BitBlitz Communications",
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0x29: "eMemory Technology",
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0x2A: "Procket Networks",
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0xAB: "Purple Ray",
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0x2C: "Trebia Networks",
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0xAD: "Delta Electronics",
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0xAE: "Onex Communications",
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0x2F: "Ample Communications",
|
|
0xB0: "Memory Experts Intl",
|
|
0x31: "Astute Networks",
|
|
0x32: "Azanda Network Devices",
|
|
0xB3: "Dibcom",
|
|
0x34: "Tekmos",
|
|
0xB5: "API NetWorks",
|
|
0xB6: "Bay Microsystems",
|
|
0x37: "Firecron Ltd",
|
|
0x38: "Resonext Communications",
|
|
0xB9: "Tachys Technologies",
|
|
0xBA: "Equator Technology",
|
|
0x3B: "Concept Computer",
|
|
0xBC: "SILCOM",
|
|
0x3D: "3Dlabs",
|
|
0x3E: "ct Magazine",
|
|
0xBF: "Sanera Systems",
|
|
0x40: "Silicon Packets",
|
|
0xC1: "Viasystems Group",
|
|
0xC2: "Simtek",
|
|
0x43: "Semicon Devices Singapore",
|
|
0xC4: "Satron Handelsges",
|
|
0x45: "Improv Systems",
|
|
0x46: "INDUSYS GmbH",
|
|
0xC7: "Corrent",
|
|
0xC8: "Infrant Technologies",
|
|
0x49: "Ritek Corp",
|
|
0x4A: "empowerTel Networks",
|
|
0xCB: "Hypertec",
|
|
0x4C: "Cavium Networks",
|
|
0xCD: "PLX Technology",
|
|
0xCE: "Massana Design",
|
|
0x4F: "Intrinsity",
|
|
0xD0: "Valence Semiconductor",
|
|
0x51: "Terawave Communications",
|
|
0x52: "IceFyre Semiconductor",
|
|
0xD3: "Primarion",
|
|
0x54: "Picochip Designs Ltd",
|
|
0xD5: "Silverback Systems",
|
|
0xD6: "Jade Star Technologies",
|
|
0x57: "Pijnenburg Securealink",
|
|
0x58: "MemorySolutioN",
|
|
0xD9: "Cambridge Silicon Radio",
|
|
0xDA: "Swissbit",
|
|
0x5B: "Nazomi Communications",
|
|
0xDC: "eWave System",
|
|
0x5D: "Rockwell Collins",
|
|
0x5E: "PAION",
|
|
0xDF: "Alphamosaic Ltd",
|
|
0xE0: "Sandburst",
|
|
0x61: "SiCon Video",
|
|
0x62: "NanoAmp Solutions",
|
|
0xE3: "Ericsson Technology",
|
|
0x64: "PrairieComm",
|
|
0xE5: "Mitac International",
|
|
0xE6: "Layer N Networks",
|
|
0x67: "Atsana Semiconductor",
|
|
0x68: "Allegro Networks",
|
|
0xE9: "Marvell Semiconductors",
|
|
0xEA: "Netergy Microelectronic",
|
|
0x6B: "NVIDIA",
|
|
0xEC: "Internet Machines",
|
|
0x6D: "Peak Electronics",
|
|
0xEF: "Accton Technology",
|
|
0x70: "Teradiant Networks",
|
|
0xF1: "Europe Technologies",
|
|
0xF2: "Cortina Systems",
|
|
0x73: "RAM Components",
|
|
0xF4: "Raqia Networks",
|
|
0x75: "ClearSpeed",
|
|
0x76: "Matsushita Battery",
|
|
0xF7: "Xelerated",
|
|
0xF8: "SimpleTech",
|
|
0x79: "Utron Technology",
|
|
0x7A: "Astec International",
|
|
0xFB: "AVM gmbH",
|
|
0x7C: "Redux Communications",
|
|
0xFD: "Dot Hill Systems",
|
|
0xFE: "TeraChip",
|
|
},
|
|
{
|
|
0x01: "T-RAM Incorporated",
|
|
0x02: "Innovics Wireless",
|
|
0x83: "Teknovus",
|
|
0x04: "KeyEye Communications",
|
|
0x85: "Runcom Technologies",
|
|
0x86: "RedSwitch",
|
|
0x07: "Dotcast",
|
|
0x08: "Silicon Mountain Memory",
|
|
0x89: "Signia Technologies",
|
|
0x8A: "Pixim",
|
|
0x0B: "Galazar Networks",
|
|
0x8C: "White Electronic Designs",
|
|
0x0D: "Patriot Scientific",
|
|
0x0E: "Neoaxiom Corporation",
|
|
0x8F: "3Y Power Technology",
|
|
0x10: "Europe Technologies",
|
|
0x91: "Potentia Power Systems",
|
|
0x92: "C-guys Incorporated",
|
|
0x13: "Digital Communications Technology Incorporated",
|
|
0x94: "Silicon-Based Technology",
|
|
0x15: "Fulcrum Microsystems",
|
|
0x16: "Positivo Informatica Ltd",
|
|
0x97: "XIOtech Corporation",
|
|
0x98: "PortalPlayer",
|
|
0x19: "Zhiying Software",
|
|
0x1A: "Direct2Data",
|
|
0x9B: "Phonex Broadband",
|
|
0x1C: "Skyworks Solutions",
|
|
0x9D: "Entropic Communications",
|
|
0x9E: "Pacific Force Technology",
|
|
0x1F: "Zensys A/S",
|
|
0x20: "Legend Silicon Corp.",
|
|
0xA1: "sci-worx GmbH",
|
|
0xA2: "Oasis Silicon Systems",
|
|
0x23: "Renesas Technology",
|
|
0xA4: "Raza Microelectronics",
|
|
0x25: "Phyworks",
|
|
0x26: "MediaTek",
|
|
0xA7: "Non-cents Productions",
|
|
0xA8: "US Modular",
|
|
0x29: "Wintegra Ltd",
|
|
0x2A: "Mathstar",
|
|
0xAB: "StarCore",
|
|
0x2C: "Oplus Technologies",
|
|
0xAD: "Mindspeed",
|
|
0xAE: "Just Young Computer",
|
|
0x2F: "Radia Communications",
|
|
0xB0: "OCZ",
|
|
0x31: "Emuzed",
|
|
0x32: "LOGIC Devices",
|
|
0xB3: "Inphi Corporation",
|
|
0x34: "Quake Technologies",
|
|
0xB5: "Vixel",
|
|
0xB6: "SolusTek",
|
|
0x37: "Kongsberg Maritime",
|
|
0x38: "Faraday Technology",
|
|
0xB9: "Altium Ltd.",
|
|
0xBA: "Insyte",
|
|
0x3B: "ARM Ltd.",
|
|
0xBC: "DigiVision",
|
|
0x3D: "Vativ Technologies",
|
|
0x3E: "Endicott Interconnect Technologies",
|
|
0xBF: "Pericom",
|
|
0x40: "Bandspeed",
|
|
0xC1: "LeWiz Communications",
|
|
0xC2: "CPU Technology",
|
|
0x43: "Ramaxel Technology",
|
|
0xC4: "DSP Group",
|
|
0x45: "Axis Communications",
|
|
0x46: "Legacy Electronics",
|
|
0xC7: "Chrontel",
|
|
0xC8: "Powerchip Semiconductor",
|
|
0x49: "MobilEye Technologies",
|
|
0x4A: "Excel Semiconductor",
|
|
0xCB: "A-DATA Technology",
|
|
0x4C: "VirtualDigm",
|
|
},
|
|
]
|
|
|
|
memory_types = {
|
|
1: "STD FPM DRAM",
|
|
2: "EDO",
|
|
3: "Pipelined Nibble",
|
|
4: "SDRAM",
|
|
5: "ROM",
|
|
6: "DDR SGRAM",
|
|
7: "DDR SDRAM",
|
|
8: "DDR2 SDRAM",
|
|
9: "DDR2 SDRAM FB-DIMM",
|
|
10: "DDR2 SDRAM FB-DIMM PROBE",
|
|
11: "DDR3 SDRAM",
|
|
12: "DDR4 SDRAM",
|
|
0x12: "DDR5 SDRAM",
|
|
}
|
|
|
|
module_types = {
|
|
1: "RDIMM",
|
|
2: "UDIMM",
|
|
3: "SODIMM",
|
|
4: "Micro-DIMM",
|
|
5: "Mini-RDIMM",
|
|
6: "Mini-UDIMM",
|
|
}
|
|
|
|
ddr3_module_capacity = {
|
|
0: 256,
|
|
1: 512,
|
|
2: 1024,
|
|
3: 2048,
|
|
4: 4096,
|
|
5: 8192,
|
|
6: 16384,
|
|
7: 32768,
|
|
}
|
|
|
|
ddr3_dev_width = {
|
|
0: 4,
|
|
1: 8,
|
|
2: 16,
|
|
3: 32,
|
|
}
|
|
|
|
ddr3_ranks = {
|
|
0: 1,
|
|
1: 2,
|
|
2: 3,
|
|
3: 4
|
|
}
|
|
|
|
ddr3_bus_width = {
|
|
0: 8,
|
|
1: 16,
|
|
2: 32,
|
|
3: 64,
|
|
}
|
|
|
|
|
|
def speed_from_clock(clock):
|
|
return int(clock * 8 - (clock * 8 % 100))
|
|
|
|
|
|
def decode_manufacturer(index, mfg):
|
|
index &= 0x7f
|
|
try:
|
|
return jedec_ids[index][mfg]
|
|
except (KeyError, IndexError):
|
|
return 'Unknown ({0}, {1})'.format(index, mfg)
|
|
|
|
|
|
def decode_spd_date(year, week):
|
|
if year == 0 and week == 0:
|
|
return 'Unknown'
|
|
return '20{0:02x}-W{1:x}'.format(year, week)
|
|
|
|
|
|
class SPD(object):
|
|
def __init__(self, bytedata):
|
|
"""Parsed memory information
|
|
|
|
Parse bytedata input and provide a structured detail about the
|
|
described memory component
|
|
|
|
:param bytedata: A bytearray of data to decode
|
|
:return:
|
|
"""
|
|
self.rawdata = bytearray(bytedata)
|
|
spd = self.rawdata
|
|
self.info = {'memory_type': memory_types.get(spd[2], 'Unknown')}
|
|
if spd[2] == 11:
|
|
self._decode_ddr3()
|
|
elif spd[2] == 12:
|
|
self._decode_ddr4()
|
|
elif spd[2] == 0x12: # ddr5
|
|
self._decode_ddr5()
|
|
|
|
def _decode_ddr3(self):
|
|
spd = self.rawdata
|
|
finetime = (spd[9] >> 4) / (spd[9] & 0xf)
|
|
fineoffset = spd[34]
|
|
if fineoffset & 0b10000000:
|
|
# Take two's complement for negative offset
|
|
fineoffset = 0 - ((fineoffset ^ 0xff) + 1)
|
|
fineoffset = (finetime * fineoffset) * 10 ** -3
|
|
mtb = spd[10] / float(spd[11])
|
|
clock = math.floor(2 / ((mtb * spd[12] + fineoffset) * 10 ** -3))
|
|
self.info['speed'] = speed_from_clock(clock)
|
|
self.info['ecc'] = (spd[8] & 0b11000) != 0
|
|
self.info['module_type'] = module_types.get(spd[3] & 0xf, 'Unknown')
|
|
sdramcap = ddr3_module_capacity[spd[4] & 0xf]
|
|
buswidth = ddr3_bus_width[spd[8] & 0b111]
|
|
sdramwidth = ddr3_dev_width[spd[7] & 0b111]
|
|
ranks = ddr3_ranks[(spd[7] & 0b111000) >> 3]
|
|
self.info['capacity_mb'] = sdramcap / 8 * buswidth / sdramwidth * ranks
|
|
self.info['manufacturer'] = decode_manufacturer(spd[117], spd[118])
|
|
self.info['manufacture_location'] = spd[119]
|
|
self.info['manufacture_date'] = decode_spd_date(spd[120], spd[121])
|
|
self.info['serial'] = hex(struct.unpack(
|
|
'>I', struct.pack('4B', *spd[122:126]))[0])[2:].rjust(8, '0')
|
|
self.info['model'] = struct.pack('20B', *spd[128:148]).strip(
|
|
b'\x00\xff ')
|
|
|
|
def _decode_ddr5(self):
|
|
spd = self.rawdata
|
|
modtypes = {
|
|
1: 'RDIMM',
|
|
2: 'UDIMM',
|
|
3: 'SODIMM',
|
|
}
|
|
sdramdensities = {
|
|
1: 4,
|
|
2: 8,
|
|
3: 12,
|
|
4: 16,
|
|
5: 24,
|
|
6: 32,
|
|
7: 48,
|
|
8: 64,
|
|
}
|
|
ddp = {
|
|
0: 1,
|
|
1: 2,
|
|
2: 2,
|
|
3: 4,
|
|
4: 8,
|
|
6: 16,
|
|
}
|
|
self.info['module_type'] = modtypes.get(
|
|
spd[3], 'Unknown')
|
|
self.info['manufacturer'] = decode_manufacturer(spd[512], spd[513])
|
|
self.info['model'] = struct.pack('30B', *spd[521:551]).strip(
|
|
b'\x00\xff ')
|
|
self.info['serial'] = hex(struct.unpack(
|
|
'>I', struct.pack('4B', *spd[517:521]))[0])[2:].rjust(8, '0')
|
|
self.info['manufacture_date'] = decode_spd_date(spd[515], spd[516])
|
|
self.info['manufacture_location'] = spd[514]
|
|
self.info['ecc'] = (spd[235] & 0b11000) != 0
|
|
if spd[19] == 0:
|
|
tckmin = struct.unpack('<H', spd[20:22])[0]
|
|
self.info['speed'] = math.floor(160000.0 / tckmin) * 100
|
|
else:
|
|
self.info['speed'] = 'Unknown'
|
|
asymmetric = bool(spd[234] & 64)
|
|
numrankspersubchannel = ((spd[234] & 56) >> 3) + 1
|
|
subchannels = ((spd[235] & 0b01100000) >> 5) + 1
|
|
buswidthpersubchannel = 2 ** ((spd[235] & 0b111) + 3)
|
|
# these bits are either all, or for half the ranks in asymettric
|
|
densityperdie = spd[4]
|
|
sdramiowidth = 2**((spd[6] >> 5) + 2)
|
|
densityperdie = sdramdensities.get(spd[4] & 0b11111, 0)
|
|
diesperpackage = ddp.get(spd[4] >> 5, 1)
|
|
capacity = (subchannels
|
|
* (buswidthpersubchannel / sdramiowidth)
|
|
* diesperpackage * densityperdie / 8
|
|
* numrankspersubchannel)
|
|
if asymmetric:
|
|
capacity = capacity // 2 # the calculation is halved to make room for the odd ranks
|
|
densityperdie = spd[8]
|
|
sdramiowidth = 2**((spd[10] >> 5) + 2)
|
|
densityperdie = sdramdensities.get(spd[8] & 0b11111, 0)
|
|
diesperpackage = ddp.get(spd[8] >> 5, 1)
|
|
oddcapacity = (subchannels
|
|
* (buswidthpersubchannel / sdramiowidth)
|
|
* diesperpackage * densityperdie / 8
|
|
* numrankspersubchannel)
|
|
oddcapacity = oddcapacity // 2 # this is halved, since this is only half the ranks
|
|
capacity += oddcapacity
|
|
self.info['capacity_mb'] = capacity * 1024
|
|
|
|
def _decode_ddr4(self):
|
|
spd = self.rawdata
|
|
if spd[17] == 0:
|
|
fineoffset = spd[125]
|
|
if fineoffset & 0b10000000:
|
|
fineoffset = 0 - ((fineoffset ^ 0xff) + 1)
|
|
clock = math.floor(
|
|
2 / ((0.125 * spd[18] + fineoffset * 0.001) * 0.001))
|
|
self.info['speed'] = speed_from_clock(clock)
|
|
else:
|
|
self.info['speed'] = 'Unknown'
|
|
self.info['ecc'] = (spd[13] & 0b11000) == 0b1000
|
|
self.info['module_type'] = module_types.get(spd[3] & 0xf,
|
|
'Unknown')
|
|
sdramcap = ddr3_module_capacity[spd[4] & 0xf]
|
|
buswidth = ddr3_bus_width[spd[13] & 0b111]
|
|
sdramwidth = ddr3_dev_width[spd[12] & 0b111]
|
|
ranks = ddr3_ranks[(spd[12] & 0b111000) >> 3]
|
|
if spd[6] & 0b11 == 0b10:
|
|
ranks = ranks * (((spd[6] >> 4) & 0b111) + 1)
|
|
self.info['capacity_mb'] = sdramcap / 8 * buswidth / sdramwidth * ranks
|
|
self.info['manufacturer'] = decode_manufacturer(spd[320], spd[321])
|
|
self.info['manufacture_location'] = spd[322]
|
|
self.info['manufacture_date'] = decode_spd_date(spd[323], spd[324])
|
|
self.info['serial'] = hex(struct.unpack(
|
|
'>I', struct.pack('4B', *spd[325:329]))[0])[2:].rjust(8, '0')
|
|
self.info['model'] = struct.pack('20B', *spd[329:349]).strip(
|
|
b'\x00\xff ')
|