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decode-dimms: Print DDR2 core timings for all supported CAS values, as

we do for DDR modules.


git-svn-id: http://lm-sensors.org/svn/i2c-tools/trunk@6082 7894878c-1315-0410-8ee3-d5d059ff63e0
tags/v4.0
Jean Delvare 13 years ago
parent
commit
6c2df5dec8
  1. 32
      eeprom/decode-dimms

32
eeprom/decode-dimms

@ -1069,6 +1069,14 @@ sub ddr2_refresh_rate($)
($byte & 0x80 ? " - Self Refresh" : "");
}
sub ddr2_core_timings($$$$$)
{
my ($cas, $ctime, $trcd, $trp, $tras) = @_;
return $cas . "-" . ceil($trcd/$ctime) . "-" . ceil($trp/$ctime) .
"-" . ceil($tras/$ctime) . " as DDR2-" . int(2000 / $ctime);
}
# Parameter: EEPROM bytes 0-127 (using 3-62)
sub decode_ddr2_sdram($)
{
@ -1152,38 +1160,44 @@ sub decode_ddr2_sdram($)
$trp = ($bytes->[27] >> 2) + (($bytes->[27] & 3) * 0.25);
$tras = $bytes->[30];
printl("tCL-tRCD-tRP-tRAS",
$highestCAS . "-" .
ceil($trcd/$ctime) . "-" .
ceil($trp/$ctime) . "-" .
ceil($tras/$ctime));
# latencies
printl("Supported CAS Latencies (tCL)", cas_latencies(keys %cas));
# timings
my ($cycle_time, $access_time);
my ($cycle_time, $access_time, $core_timings);
if (exists $cas{$highestCAS}) {
$core_timings = ddr2_core_timings($highestCAS, $ctime,
$trcd, $trp, $tras);
$cycle_time = tns($ctime) . " at CAS $highestCAS (tCK min)";
$access_time = tns(ddr2_sdram_atime($bytes->[10]))
. " at CAS $highestCAS (tAC)";
}
if (exists $cas{$highestCAS-1} && spd_written(@$bytes[23..24])) {
$cycle_time .= "\n".tns(ddr2_sdram_ctime($bytes->[23]))
$ctime = ddr2_sdram_ctime($bytes->[23]);
$core_timings .= "\n".ddr2_core_timings($highestCAS-1, $ctime,
$trcd, $trp, $tras);
$cycle_time .= "\n".tns($ctime)
. " at CAS ".($highestCAS-1);
$access_time .= "\n".tns(ddr2_sdram_atime($bytes->[24]))
. " at CAS ".($highestCAS-1);
}
if (exists $cas{$highestCAS-2} && spd_written(@$bytes[25..26])) {
$cycle_time .= "\n".tns(ddr2_sdram_ctime($bytes->[25]))
$ctime = ddr2_sdram_ctime($bytes->[25]);
$core_timings .= "\n".ddr2_core_timings($highestCAS-2, $ctime,
$trcd, $trp, $tras);
$cycle_time .= "\n".tns($ctime)
. " at CAS ".($highestCAS-2);
$access_time .= "\n".tns(ddr2_sdram_atime($bytes->[26]))
. " at CAS ".($highestCAS-2);
}
printl_cond(defined $core_timings, "tCL-tRCD-tRP-tRAS", $core_timings);
printl_cond(defined $cycle_time, "Minimum Cycle Time", $cycle_time);
printl_cond(defined $access_time, "Maximum Access Time", $access_time);
$temp = ddr2_sdram_ctime($bytes->[43]);

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