Fix for HW397129-set bit 52 in the ALTD_OPTION reg to keep MC fastpat…

…h enabled

Change-Id: I3c25740baa65b7553890aac92e4599db031f407a
Original-Change-Id: Ifd5be240823ea2ba4fdb6950404b429e33363bd8
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/36466
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml

@@ -2375,6 +2375,24 @@
     </chipEcFeature>
   </attribute>
 
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_HW397129</id>>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+      Attribute for if we need a workaround for re-enabling the MC fastpath since on
+      Nimbus DD1 is gets disabled.
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x20</value>
+          <test>LESS_THAN</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
+
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