Changeset 5928

Timestamp:

02/16/11 13:18:52 (2 years ago)

Author:

khali

Message:

Decode module configuration type and refresh rate of DDR SDRAM.

Location:

i2c-tools/trunk

Files:

• CHANGES (modified) (1 diff)
• eeprom/decode-dimms (modified) (4 diffs)

i2c-tools/trunk/CHANGES

@@ -3 +3 @@
 
 SVN
+  decode-dimms: Decode module configuration type of DDR SDRAM
+                Decode refresh rate of DDR SDRAM
   i2c-dev.h: Make value arrays const for block write functions
   i2cset: Add support for SMBus and I2C block writes

i2c-tools/trunk/eeprom/decode-dimms

@@ -526 +526 @@
 }
 
+# Common to SDR and DDR SDRAM
+sub sdram_module_configuration_type($)
+{
+        my @types = (
+                "No Parity",                    # 0
+                "Parity",                       # 1
+                "ECC",                          # 2
+        );
+
+        return ($_[0] < @types) ? $types[$_[0]] : "Undefined!";
+}
+
 # Parameter: EEPROM bytes 0-127 (using 3-62)
 sub decode_sdr_sdram($)
@@ -597 +609 @@
                sdram_voltage_interface_level($bytes->[8]));
 
-        if ($bytes->[11] == 0) { $temp = "No Parity"; }
-        elsif ($bytes->[11] == 1) { $temp = "Parity"; }
-        elsif ($bytes->[11] == 2) { $temp = "ECC";  }
-        else { $temp = "Undefined!"; }
-        printl("Module Configuration Type", $temp);
-
-        if ($bytes->[12] & 0x80) { $temp = "Self Refreshing"; }
-        else { $temp = "Not Self Refreshing"; }
-        printl("Refresh Type", $temp);
-
-        $temp = $bytes->[12] & 0x7f;
-        if ($temp == 0) { $temp = "Normal (15.625 us)"; }
-        elsif ($temp == 1) { $temp = "Reduced (3.9 us)"; }
-        elsif ($temp == 2) { $temp = "Reduced (7.8 us)"; }
-        elsif ($temp == 3) { $temp = "Extended (31.3 us)"; }
-        elsif ($temp == 4) { $temp = "Extended (62.5 us)"; }
-        elsif ($temp == 5) { $temp = "Extended (125 us)"; }
-        else { $temp = "Undefined!"; }
-        printl("Refresh Rate", $temp);
+        printl("Module Configuration Type",
+               sdram_module_configuration_type($bytes->[11]));
+
+        printl("Refresh Rate", ddr2_refresh_rate($bytes->[12]));
 
         if ($bytes->[13] & 0x80) { $temp = "Bank2 = 2 x Bank1"; }
@@ -822 +819 @@
                sdram_voltage_interface_level($bytes->[8]));
 
+        printl("Module Configuration Type",
+               sdram_module_configuration_type($bytes->[11]));
+
+        printl("Refresh Rate", ddr2_refresh_rate($bytes->[12]));
+
         my $highestCAS = 0;
         my %cas;
@@ -950 +952 @@
 }
 
+# Common to SDR, DDR and DDR2 SDRAM
 sub ddr2_refresh_rate($)
 {