PM: Move to chip EC based #V validity checking in p9_pstate_parameter…

…_block

- Was always returning SUCCESS which caused p9_hcode_image_build to not
  properly terminate (false error logs)
- Added EC feature attribute to skip #V validity checking and thus disabling
  pstates for Nimbus < 20 and Cumulus < 11
- Initalized wof io_size to 0.
- Rebased
- Added override attribute ATTR_SYSTEM_POUNDV_VALIDITY_HALT_DISABLE to disable
  killing the IPL upon #V validity check failure.  Disables Pstates and
  continues.  This allow the use of parts that don't have good #V for other,
  non-Pstate oriented purposes.  Marked with new <overrideOnly/> tag.

Change-Id: I3fdc8a02f16d6779723461342e4d2449989cb65a
Original-Change-Id: Ia238af9758ae1fe35d39fa536d73ec41e85f9498
CQ: SW400102
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45185
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
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: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr@in.ibm.com>
Reviewed-by: Juan R. Medina <jrmedina@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55572
CI-Ready: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

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

@@ -5002,6 +5002,31 @@
       </chip>
     </chipEcFeature>
   </attribute>
+ <!-- ********************************************************************* -->
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_POUNDV_VALIDATE_DISABLE</id>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+        Disables the checking of #V validity by p9_pstate_parameter_block.
+        If not disable, invalid #V will fail to IPL.
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x20</value>
+          <test>LESS_THAN</test>
+        </ec>
+      </chip>
+      <chip>
+        <name>ENUM_ATTR_NAME_CUMULUS</name>
+        <ec>
+          <value>0x11</value>
+          <test>LESS_THAN</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
   <!-- ********************************************************************* -->
   <attribute>
     <id>ATTR_CHIP_EC_FEATURE_OBUS_HW419305</id>