Instead of reencoding pre-DDR3 manufacturer code to DDR3 manufacturer
code, move the common decoding to a separate function.
---
eeprom/decode-dimms | 28 +++++++++++++++++-----------
1 file changed, 17 insertions(+), 11 deletions(-)
--- i2c-tools.orig/eeprom/decode-dimms 2015-06-01 09:14:30.899898763 +0200
+++ i2c-tools/eeprom/decode-dimms 2015-06-01 09:19:01.931673815 +0200
@@ -336,6 +336,21 @@ sub parity($)
return ($parity & 1);
}
+# The code byte includes parity, the count byte does not.
+sub manufacturer_common($$)
+{
+ my ($count, $code) = @_;
+ my $manufacturer;
+
+ return "Invalid" if parity($code) != 1
+ or ($code &= 0x7F) == 0;
+ return "Unknown" if $count >= @vendors
+ or $code - 1 >= @{$vendors[$count]};
+ $manufacturer = $vendors[$count][$code - 1];
+ $manufacturer =~ s/ \(former .*\)$// if $opt_side_by_side;
+ return $manufacturer;
+}
+
# New encoding format (as of DDR3) for manufacturer just has a count of
# leading 0x7F rather than all the individual bytes. The count bytes includes
# parity!
@@ -346,12 +361,7 @@ sub manufacturer_ddr3($$)
return "Undefined" unless spd_written($count, $code);
- return "Invalid" if parity($code) != 1
- or ($code & 0x7F) == 0;
- return "Unknown" if ($count & 0x7F) >= @vendors
- or ($code & 0x7F) - 1 >= @{$vendors[$count & 0x7F]};
- $manufacturer = $vendors[$count & 0x7F][($code & 0x7F) - 1];
- $manufacturer =~ s/ \(former .*\)$// if $opt_side_by_side;
+ $manufacturer = manufacturer_common($count & 0x7F, $code);
$manufacturer .= "? (Invalid parity)" if parity($count) != 1;
return $manufacturer;
}
@@ -369,11 +379,7 @@ sub manufacturer(@)
}
return ("Invalid", []) unless defined $first;
- return ("Invalid", [$first, @bytes]) if parity($first) != 1;
- if (parity($ai) == 0) {
- $ai |= 0x80;
- }
- return (manufacturer_ddr3($ai, $first), \@bytes);
+ return (manufacturer_common($ai, $first), \@bytes);
}
sub manufacturer_data(@)
--
Jean Delvare
SUSE L3 Support
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