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Don't decode anything unless the checksum is valid (or the -c

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option is used). Bump version.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@3243 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare committed 2006-01-22 16:17:46 +00:00
1 parent 7311d55ae9
commit 9a3dc11375
1 file changed
+20 -16
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prog/eeprom/decode-dimms.pl
+20 -16
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@@ -40,6 +40,11 @@
# add large lookup tables for manufacturer names, based on data
# provided by Rudolf Marek, taken from:
# http://www.jedec.org/download/search/JEP106r.pdf
# Version 1.1 2006-01-22 Jean Delvare <khali@linux-fr.org>
# improve the text output, making it hopefully clearer
# read eeprom by 64-byte blocks, this allows some code cleanups
# use sysopen/sysread instead of open/read for better performance
# verify checksum before decoding anything
#
#
# EEPROM data decoding for SDRAM DIMM modules.
@@ -382,8 +387,9 @@ if ($opt_body)
}
printh 'PC DIMM Serial Presence Detect Tester/Decoder
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner and others
Version 2.9.3';
By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner,
Jean Delvare and others
Version 2.10.0';
my $dimm_count=0;
@@ -395,9 +401,6 @@ for my $i ( 0 .. $#dimm_list ) {
$_=$dimm_list[$i];
if (($use_sysfs && /^\d+-\d+$/)
|| (!$use_sysfs && /^eeprom-/)) {
my $dimm_checksum=0;
$dimm_count += 1;
print "<b><u>" if $opt_html;
printl2 "\n\nDecoding EEPROM", ($use_sysfs ?
"/sys/bus/i2c/drivers/eeprom/$dimm_list[$i]" :
@@ -413,14 +416,22 @@ for my $i ( 0 .. $#dimm_list ) {
prints "The Following is Required Data and is Applicable to all DIMM Types";
my @bytes = readspd64(0, $dimm_list[$i]);
for my $j (0 .. 62) {
$dimm_checksum = $dimm_checksum + $bytes[$j];
}
my $dimm_checksum = 0;
$dimm_checksum += $bytes[$_] foreach (0 .. 62);
$dimm_checksum &= 0xff;
my $l = "EEPROM Checksum of bytes 0-62";
printl $l, ($bytes[63] == $dimm_checksum ?
sprintf("OK (0x%.2X)", $bytes[63]):
sprintf("Bad\n(found 0x%.2X, calculated 0x%.2X)\n",
$bytes[63], $dimm_checksum));
next unless $bytes[63] == $dimm_checksum or $opt_igncheck;
$dimm_count++;
printl "# of bytes written to SDRAM EEPROM",$bytes[0];
my $l = "Total number of bytes in EEPROM";
$l = "Total number of bytes in EEPROM";
if ($bytes[1] <= 13) {
printl $l, 2**$bytes[1];
} elsif ($bytes[1] == 0) {
@@ -706,13 +717,7 @@ for my $i ( 0 .. $#dimm_list ) {
# That's it for the lower part of an SDRAM EEPROM's memory!
# Decode next 16 bytes (48-63)
printl "SPD Revision code ", sprintf("%x", $bytes[62]);
$l = "EEPROM Checksum of bytes 0-62";
printl $l, ($bytes[63] == $dimm_checksum ?
sprintf("OK (0x%.2X)", $bytes[63]):
sprintf("Bad (found 0x%.2X, calculated 0x%.2X)\n",
$bytes[63], $dimm_checksum));
if($bytes[63]==$dimm_checksum || $opt_igncheck) {
# Decode next 48 bytes (64-111)
@bytes = readspd64(64, $dimm_list[$i]);
@@ -766,7 +771,6 @@ for my $i ( 0 .. $#dimm_list ) {
if ($bytes[63] > 175) { $temp .= "Double Sided DIMM\n"; }
else { $temp .= "Single Sided DIMM\n";}
printl $l, $temp;
}
print "</table>\n" if $opt_html;
}