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Add support for rinv and faster DDR3 dimms

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This commit is contained in:
Jarrod Johnson 2013-08-13 10:13:06 -04:00
parent d6ce28f954
commit 08f4ed81e5
1 changed files with 16 additions and 2 deletions
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18
perl-xCAT/xCAT/SPD.pm
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@ -667,6 +667,9 @@ sub decode_spd {
1066 => 8500,
1333 => 10600,
1600 => 12800,
1867 => 14900,
2133 => 17000,
2134 => 17000,
);
my %ddr3modcap = (
@ -707,9 +710,20 @@ sub decode_spd {
}
$rethash->{product}->{name}=$memtypes{$spd[2]};
if ($spd[2] == 11) { #DDR3 spec applies
my $ftbdividend = $spd[9] >> 4;
my $ftbdivisor = $spd[9] & 0xf;
my $ftb = $ftbdividend/$ftbdivisor;
my $fineoffset = $spd[34];
if ($fineoffset & 0b10000000) {
#negative value, twos complement
$fineoffset = 0-(($fineoffset ^ 0xff) + 1);
}
$fineoffset = ($ftb * $fineoffset) * 10**-3;
my $mtb = $spd[10]/$spd[11];
my $speed = $speedfromclock{int(2/($mtb*$spd[12]*10**-3))};
$rethash->{product}->{name}="PC3-".$speed;
my $clock = int(2/(($mtb*$spd[12]+$fineoffset)*10**-3));
my $speed = $speedfromclock{$clock};
unless ($speed) { $speed = "UNKNOWN"; }
$rethash->{product}->{name}="PC3-".$speed." ($clock MT/s)";
if ($spd[8]&0b11000) {
$rethash->{product}->{name} .= " ECC";
}