xcat-core/perl-xCAT/xCAT/SPD.pm
2011-08-31 13:20:43 +00:00

764 lines
26 KiB
Perl

package xCAT::SPD;
#This module provides the ability to decode DIMM SPD data to human readable format
use strict;
#use Data::Dumper;
require Exporter;
our @ISA=qw/Exporter/;
our @EXPORT_OK=qw/decode_spd/;
sub do_crc16 {
my @data = @_;
my $crc = 0;
while (@data) {
my $byte = shift @data;
$crc = $crc ^ $byte<<8;
my $loopcount=8;
while ($loopcount--) {
if ($crc & 0x8000) {
$crc = $crc <<1 ^ 0x1021;
} else {
$crc = $crc << 1;
}
}
}
return $crc & 0xffff;;;;
}
sub decode_manufacturer {
my $jedec_ids = [
{
0x01 => "AMD",
0x02 => "AMI",
0x83 => "Fairchild",
0x04 => "Fujitsu",
0x85 => "GTE",
0x86 => "Harris",
0x07 => "Hitachi",
0x08 => "Inmos",
0x89 => "Intel",
0x8a => "I.T.T.",
0x0b => "Intersil",
0x8c => "Monolithic Memories",
0x0d => "Mostek",
0x0e => "Motorola",
0x8f => "National",
0x10 => "NEC",
0x91 => "RCA",
0x92 => "Raytheon",
0x13 => "Conexant (Rockwell)",
0x94 => "Seeq",
0x15 => "Philips Semi. (Signetics)",
0x16 => "Synertek",
0x97 => "Texas Instruments",
0x98 => "Toshiba",
0x19 => "Xicor",
0x1a => "Zilog",
0x9b => "Eurotechnique",
0x1c => "Mitsubishi",
0x9d => "Lucent (AT&T)",
0x9e => "Exel",
0x1f => "Atmel",
0x20 => "SGS/Thomson",
0xa1 => "Lattice Semi.",
0xa2 => "NCR",
0x23 => "Wafer Scale Integration",
0xa4 => "IBM",
0x25 => "Tristar",
0x26 => "Visic",
0xa7 => "Intl. CMOS Technology",
0xa8 => "SSSI",
0x29 => "Microchip Technology",
0x2a => "Ricoh Ltd.",
0xab => "VLSI",
0x2c => "Micron Technology",
0xad => "Hyundai Electronics",
0xae => "OKI Semiconductor",
0x2f => "ACTEL",
0xb0 => "Sharp",
0x31 => "Catalyst",
0x32 => "Panasonic",
0xb3 => "IDT",
0x34 => "Cypress",
0xb5 => "DEC",
0xb6 => "LSI Logic",
0x37 => "Zarlink",
0x38 => "UTMC",
0xb9 => "Thinking Machine",
0xba => "Thomson CSF",
0x3b => "Integrated CMOS(Vertex)",
0xbc => "Honeywell",
0x3d => "Tektronix",
0x3e => "Sun Microsystems",
0xbf => "SST",
0x40 => "MOSEL",
0xc1 => "Infineon",
0xc2 => "Macronix",
0x43 => "Xerox",
0xc4 => "Plus Logic",
0x45 => "SunDisk",
0x46 => "Elan Circuit Tech.",
0xc7 => "European Silicon Str.",
0xc8 => "Apple Computer",
0xc9 => "Xilinx",
0x4a => "Compaq",
0xcb => "Protocol Engines",
0x4c => "SCI",
0xcd => "Seiko Instruments",
0xce => "Samsung",
0x4f => "I3 Design System",
0xd0 => "Klic",
0x51 => "Crosspoint Solutions",
0x52 => "Alliance Semiconductor",
0xd3 => "Tandem",
0x54 => "Hewlett-Packard",
0xd5 => "Intg. Silicon Solutions",
0xd6 => "Brooktree",
0x57 => "New Media",
0x58 => "MHS Electronic",
0xd9 => "Performance Semi.",
0xda => "Winbond Electronic",
0x5b => "Kawasaki Steel",
0xdc => "Bright Micro",
0x5d => "TECMAR",
0x5e => "Exar",
0xdf => "PCMCIA",
0xe0 => "LG Semiconductor",
0x61 => "Northern Telecom",
0x62 => "Sanyo",
0xe3 => "Array Microsystems",
0x64 => "Crystal Semiconductor",
0xe5 => "Analog Devices",
0xe6 => "PMC-Sierra",
0x67 => "Asparix",
0x68 => "Convex Computer",
0xe9 => "Quality Semiconductor",
0xea => "Nimbus Technology",
0x6b => "Transwitch",
0xec => "Micronas (ITT Intermetall)",
0x6d => "Cannon",
0x6e => "Altera",
0xef => "NEXCOM",
0x70 => "QUALCOMM",
0xf1 => "Sony",
0xf2 => "Cray Research",
0x73 => "AMS (Austria Micro)",
0xf4 => "Vitesse",
0x75 => "Aster Electronics",
0x76 => "Bay Networks (Synoptic)",
0xf7 => "Zentrum",
0xf8 => "TRW",
0x79 => "Thesys",
0x7a => "Solbourne Computer",
0xfb => "Allied-Signal",
0x7c => "Dialog",
0xfd => "Media Vision",
0xfe => "Level One Communication",
},
{
0x01 => "Cirrus Logic",
0x02 => "National Instruments",
0x83 => "ILC Data Device",
0x04 => "Alcatel Mietec",
0x85 => "Micro Linear",
0x86 => "Univ. of NC",
0x07 => "JTAG Technologies",
0x08 => "Loral",
0x89 => "Nchip",
0x8A => "Galileo Tech",
0x0B => "Bestlink Systems",
0x8C => "Graychip",
0x0D => "GENNUM",
0x0E => "VideoLogic",
0x8F => "Robert Bosch",
0x10 => "Chip Express",
0x91 => "DATARAM",
0x92 => "United Microelec Corp.",
0x13 => "TCSI",
0x94 => "Smart Modular",
0x15 => "Hughes Aircraft",
0x16 => "Lanstar Semiconductor",
0x97 => "Qlogic",
0x98 => "Kingston",
0x19 => "Music Semi",
0x1A => "Ericsson Components",
0x9B => "SpaSE",
0x1C => "Eon Silicon Devices",
0x9D => "Programmable Micro Corp",
0x9E => "DoD",
0x1F => "Integ. Memories Tech.",
0x20 => "Corollary Inc.",
0xA1 => "Dallas Semiconductor",
0xA2 => "Omnivision",
0x23 => "EIV(Switzerland)",
0xA4 => "Novatel Wireless",
0x25 => "Zarlink (formerly Mitel)",
0x26 => "Clearpoint",
0xA7 => "Cabletron",
0xA8 => "Silicon Technology",
0x29 => "Vanguard",
0x2A => "Hagiwara Sys-Com",
0xAB => "Vantis",
0x2C => "Celestica",
0xAD => "Century",
0xAE => "Hal Computers",
0x2F => "Rohm Company Ltd.",
0xB0 => "Juniper Networks",
0x31 => "Libit Signal Processing",
0x32 => "Enhanced Memories Inc.",
0xB3 => "Tundra Semiconductor",
0x34 => "Adaptec Inc.",
0xB5 => "LightSpeed Semi.",
0xB6 => "ZSP Corp.",
0x37 => "AMIC Technology",
0x38 => "Adobe Systems",
0xB9 => "Dynachip",
0xBA => "PNY Electronics",
0x3B => "Newport Digital",
0xBC => "MMC Networks",
0x3D => "T Square",
0x3E => "Seiko Epson",
0xBF => "Broadcom",
0x40 => "Viking Components",
0xC1 => "V3 Semiconductor",
0xC2 => "Flextronics (formerly Orbit)",
0x43 => "Suwa Electronics",
0xC4 => "Transmeta",
0x45 => "Micron CMS",
0x46 => "American Computer & Digital Components Inc",
0xC7 => "Enhance 3000 Inc",
0xC8 => "Tower Semiconductor",
0x49 => "CPU Design",
0x4A => "Price Point",
0xCB => "Maxim Integrated Product",
0x4C => "Tellabs",
0xCD => "Centaur Technology",
0xCE => "Unigen Corporation",
0x4F => "Transcend Information",
0xD0 => "Memory Card Technology",
0x51 => "CKD Corporation Ltd.",
0x52 => "Capital Instruments, Inc.",
0xD3 => "Aica Kogyo, Ltd.",
0x54 => "Linvex Technology",
0xD5 => "MSC Vertriebs GmbH",
0xD6 => "AKM Company, Ltd.",
0x57 => "Dynamem, Inc.",
0x58 => "NERA ASA",
0xD9 => "GSI Technology",
0xDA => "Dane-Elec (C Memory)",
0x5B => "Acorn Computers",
0xDC => "Lara Technology",
0x5D => "Oak Technology, Inc.",
0x5E => "Itec Memory",
0xDF => "Tanisys Technology",
0xE0 => "Truevision",
0x61 => "Wintec Industries",
0x62 => "Super PC Memory",
0xE3 => "MGV Memory",
0x64 => "Galvantech",
0xE5 => "Gadzoox Nteworks",
0xE6 => "Multi Dimensional Cons.",
0x67 => "GateField",
0x68 => "Integrated Memory System",
0xE9 => "Triscend",
0xEA => "XaQti",
0x6B => "Goldenram",
0xEC => "Clear Logic",
0x6D => "Cimaron Communications",
0x6E => "Nippon Steel Semi. Corp.",
0xEF => "Advantage Memory",
0x70 => "AMCC",
0xF1 => "LeCroy",
0xF2 => "Yamaha Corporation",
0x73 => "Digital Microwave",
0xF4 => "NetLogic Microsystems",
0x75 => "MIMOS Semiconductor",
0x76 => "Advanced Fibre",
0xF7 => "BF Goodrich Data.",
0xF8 => "Epigram",
0x79 => "Acbel Polytech Inc.",
0x7A => "Apacer Technology",
0xFB => "Admor Memory",
0x7C => "FOXCONN",
0xFD => "Quadratics Superconductor",
0xFE => "3COM",
},
{
0x01 => "Camintonn Corporation",
0x02 => "ISOA Incorporated",
0x83 => "Agate Semiconductor",
0x04 => "ADMtek Incorporated",
0x85 => "HYPERTEC",
0x86 => "Adhoc Technologies",
0x07 => "MOSAID Technologies",
0x08 => "Ardent Technologies",
0x89 => "Switchcore",
0x8A => "Cisco Systems, Inc.",
0x0B => "Allayer Technologies",
0x8C => "WorkX AG",
0x0D => "Oasis Semiconductor",
0x0E => "Novanet Semiconductor",
0x8F => "E-M Solutions",
0x10 => "Power General",
0x91 => "Advanced Hardware Arch.",
0x92 => "Inova Semiconductors GmbH",
0x13 => "Telocity",
0x94 => "Delkin Devices",
0x15 => "Symagery Microsystems",
0x16 => "C-Port Corporation",
0x97 => "SiberCore Technologies",
0x98 => "Southland Microsystems",
0x19 => "Malleable Technologies",
0x1A => "Kendin Communications",
0x9B => "Great Technology Microcomputer",
0x1C => "Sanmina Corporation",
0x9D => "HADCO Corporation",
0x9E => "Corsair",
0x1F => "Actrans System Inc.",
0x20 => "ALPHA Technologies",
0xA1 => "Cygnal Integrated Products Incorporated",
0xA2 => "Artesyn Technologies",
0x23 => "Align Manufacturing",
0xA4 => "Peregrine Semiconductor",
0x25 => "Chameleon Systems",
0x26 => "Aplus Flash Technology",
0xA7 => "MIPS Technologies",
0xA8 => "Chrysalis ITS",
0x29 => "ADTEC Corporation",
0x2A => "Kentron Technologies",
0xAB => "Win Technologies",
0x2C => "ASIC Designs Inc",
0xAD => "Extreme Packet Devices",
0xAE => "RF Micro Devices",
0x2F => "Siemens AG",
0xB0 => "Sarnoff Corporation",
0x31 => "Itautec Philco SA",
0x32 => "Radiata Inc.",
0xB3 => "Benchmark Elect. (AVEX)",
0x34 => "Legend",
0xB5 => "SpecTek Incorporated",
0xB6 => "Hi/fn",
0x37 => "Enikia Incorporated",
0x38 => "SwitchOn Networks",
0xB9 => "AANetcom Incorporated",
0xBA => "Micro Memory Bank",
0x3B => "ESS Technology",
0xBC => "Virata Corporation",
0x3D => "Excess Bandwidth",
0x3E => "West Bay Semiconductor",
0xBF => "DSP Group",
0x40 => "Newport Communications",
0xC1 => "Chip2Chip Incorporated",
0xC2 => "Phobos Corporation",
0x43 => "Intellitech Corporation",
0xC4 => "Nordic VLSI ASA",
0x45 => "Ishoni Networks",
0x46 => "Silicon Spice",
0xC7 => "Alchemy Semiconductor",
0xC8 => "Agilent Technologies",
0x49 => "Centillium Communications",
0x4A => "W.L. Gore",
0xCB => "HanBit Electronics",
0x4C => "GlobeSpan",
0xCD => "Element 14",
0xCE => "Pycon",
0x4F => "Saifun Semiconductors",
0xD0 => "Sibyte, Incorporated",
0x51 => "MetaLink Technologies",
0x52 => "Feiya Technology",
0xD3 => "I & C Technology",
0x54 => "Shikatronics",
0xD5 => "Elektrobit",
0xD6 => "Megic",
0x57 => "Com-Tier",
0x58 => "Malaysia Micro Solutions",
0xD9 => "Hyperchip",
0xDA => "Gemstone Communications",
0x5B => "Anadyne Microelectronics",
0xDC => "3ParData",
0x5D => "Mellanox Technologies",
0x5E => "Tenx Technologies",
0xDF => "Helix AG",
0xE0 => "Domosys",
0x61 => "Skyup Technology",
0x62 => "HiNT Corporation",
0xE3 => "Chiaro",
0x64 => "MCI Computer GMBH",
0xE5 => "Exbit Technology A/S",
0xE6 => "Integrated Technology Express",
0x67 => "AVED Memory",
0x68 => "Legerity",
0xE9 => "Jasmine Networks",
0xEA => "Caspian Networks",
0x6B => "nCUBE",
0xEC => "Silicon Access Networks",
0x6D => "FDK Corporation",
0x6E => "High Bandwidth Access",
0xEF => "MultiLink Technology",
0x70 => "BRECIS",
0xF1 => "World Wide Packets",
0xF2 => "APW",
0x73 => "Chicory Systems",
0xF4 => "Xstream Logic",
0x75 => "Fast-Chip",
0x76 => "Zucotto Wireless",
0xF7 => "Realchip",
0xF8 => "Galaxy Power",
0x79 => "eSilicon",
0x7A => "Morphics Technology",
0xFB => "Accelerant Networks",
0x7C => "Silicon Wave",
0xFD => "SandCraft",
0xFE => "Elpida",
},
{
0x01 => "Solectron",
0x02 => "Optosys Technologies",
0x83 => "Buffalo (Formerly Melco)",
0x04 => "TriMedia Technologies",
0x85 => "Cyan Technologies",
0x86 => "Global Locate",
0x07 => "Optillion",
0x08 => "Terago Communications",
0x89 => "Ikanos Communications",
0x8A => "Princeton Technology",
0x0B => "Nanya Technology",
0x8C => "Elite Flash Storage",
0x0D => "Mysticom",
0x0E => "LightSand Communications",
0x8F => "ATI Technologies",
0x10 => "Agere Systems",
0x91 => "NeoMagic",
0x92 => "AuroraNetics",
0x13 => "Golden Empire",
0x94 => "Muskin",
0x15 => "Tioga Technologies",
0x16 => "Netlist",
0x97 => "TeraLogic",
0x98 => "Cicada Semiconductor",
0x19 => "Centon Electronics",
0x1A => "Tyco Electronics",
0x9B => "Magis Works",
0x1C => "Zettacom",
0x9D => "Cogency Semiconductor",
0x9E => "Chipcon AS",
0x1F => "Aspex Technology",
0x20 => "F5 Networks",
0xA1 => "Programmable Silicon Solutions",
0xA2 => "ChipWrights",
0x23 => "Acorn Networks",
0xA4 => "Quicklogic",
0x25 => "Kingmax Semiconductor",
0x26 => "BOPS",
0xA7 => "Flasys",
0xA8 => "BitBlitz Communications",
0x29 => "eMemory Technology",
0x2A => "Procket Networks",
0xAB => "Purple Ray",
0x2C => "Trebia Networks",
0xAD => "Delta Electronics",
0xAE => "Onex Communications",
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",
}
];
my $arr_index = shift;
my $code = shift;
unless ($code) {
return "Malformed SPD";
}
if (defined $jedec_ids->[$arr_index]->{$code}) {
return $jedec_ids->[$arr_index]->{$code};
} else {
return "Unrecognized manufacturer: $arr_index, $code";
}
}
sub decode_spd {
my %memtypes = (
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"
);
my %modtypes = (
1 => "RDIMM",
2 => "UDIMM",
3 => "SODIMM",
4 => "Micro-DIMM",
5 => "Mini-RDIMM",
6 => "Mini-UDIMM",
);
my %speedfromclock = (
800 => 6400,
1066 => 8500,
1333 => 10600,
1600 => 12800,
);
my %ddr3modcap = (
0 => 256,
1 => 512,
2 => 1024,
3 => 2048,
4 => 4096,
5 => 8192,
6 => 16384
);
my %ddr3devwidth = (
0 => 4,
1 => 8,
2 => 16,
3 => 32
);
my %ddr3ranks = (
0 => 1,
1 => 2,
2 => 3,
3 => 4
);
my %ddr3buswidth = (
0 => 8,
1 => 16,
2 => 32,
3 => 64
);
my @spd = @_;
my $rethash;
#print Dumper(@spd);
if (($spd[0] & 0xf) > 3) { #TODO: Remove workaround for buggy SPD
$rethash->{product}->{extra}=[{value=>'Malformed SPD (missing leading byte)',encoding=>3}];
unshift @spd,3;
}
$rethash->{product}->{name}=$memtypes{$spd[2]};
if ($spd[2] == 11) { #DDR3 spec applies
my $mtb = $spd[10]/$spd[11];
my $speed = $speedfromclock{int(2/($mtb*$spd[12]*10**-3))};
$rethash->{product}->{name}="PC3-".$speed;
if ($spd[8]&0b11000) {
$rethash->{product}->{name} .= " ECC";
}
$rethash->{product}->{name}.=" ".$modtypes{$spd[3]&0x0f};
my $sdramcap=$ddr3modcap{$spd[4]&0xf};
my $buswidth=$ddr3buswidth{$spd[8]&0b111};
my $sdramwidth=$ddr3devwidth{$spd[7]&0b111};
my $ranks = $ddr3ranks{($spd[7]&0b111000)>>3};
my $capacity = $sdramcap/8*$buswidth/$sdramwidth*$ranks;
if ($capacity < 1024) {
$capacity = $capacity."MB";
} else {
$capacity = ($capacity/1024)."GB";
}
$rethash->{product}->{name} = $capacity." ".$rethash->{product}->{name};
$rethash->{product}->{manufacturer} = decode_manufacturer($spd[117],$spd[118]);
$rethash->{product}->{buildlocation} = sprintf("%02x",$spd[119]);
if ($spd[120] != 0 or $spd[121] != 0) {
$rethash->{product}->{builddate} = sprintf("Week %x of 20%02x",$spd[121],$spd[120]);
}
foreach (@spd[128..145]) {
if ($_ & 0b10000000) {
$rethash->{product}->{model}="Malformed SPD";
}
}
unless ($rethash->{product}->{model}) {
$rethash->{product}->{model}=pack("C*",@spd[128..145]);
}
if ($spd[0] & 0b10000000) { #crc is to exclude 117-125, crc 0 to 116
unless (do_crc16(@spd[0..116]) == ($spd[126]+($spd[127]<<8))) {
push @{$rethash->{product}->{extra}},"SPD CRC Invalid!";
}
} else { #crc for 0 to 125
unless (do_crc16(@spd[0..125]) == ($spd[126]+($spd[127]<<8))) {
push @{$rethash->{product}->{extra}},"CRC Invalid!";
}
}
my $rawspd="SPD Dump: ";
foreach (@spd) {
$rawspd .= sprintf("%02X ",$_);
}
push @{$rethash->{product}->{extra}},$rawspd;
} else {
$rethash->{product}->{model}="Unrecognized SPD";
}
return $rethash;
}
1;