Create HWP to save/restore OBUS fir masks

During the IPL in a multi-node system Hostboot is unable to detect other
nodes. Because of this Hostboot is unable to set the PEER_TARGET attr
for OBUS targets as their PEERs are on different nodes. Once the system
reaching runtime HBRT will have the information to fill in PEER_TARGET
attributes on the OBUS targets. During the period while Hostboot doesn't
know the OBUS PEER_TARGETs we must mask off additional FIRs so that PRD
doesn't attempt to access the an OBUS's peer during a fail. This HWP will
provide a way to save off the FIR masks during IPL time, and will apply
additional masks required for the rest of the IPL. In addition this HWP
will provide a way to reapply the original masks after HBRT has filled
in the information for all OBUSes peer targets.

CQ: SW425530
Change-Id: I45a3d23023f0021d7dbf5c6726075b270e2e1418
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/57853
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: Christopher W. Steffen <cwsteffen@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/57857
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>

2 files changed, 44 insertions, 2 deletions

diff --git a/src/import/chips/p9/procedures/xml/attribute_info/p9_io_obus_attributes.xml b/src/import/chips/p9/procedures/xml/attribute_info/p9_io_obus_attributes.xml
index f3467db81..a1f35c62f 100644
--- a/src/import/chips/p9/procedures/xml/attribute_info/p9_io_obus_attributes.xml
+++ b/src/import/chips/p9/procedures/xml/attribute_info/p9_io_obus_attributes.xml
@@ -115,6 +115,40 @@
 </attribute>
 <!-- ********************************************************************** -->
 <attribute>
+  <id>ATTR_IO_OLLFIR_MASK</id>
+  <targetType>TARGET_TYPE_OBUS</targetType>
+  <description>
+    This attribute provides a place for Hostboot to save off the IO_OLLFIR_MASK.
+    During IPL time Hostboot wants to change the value of the FIR but it will
+    write the value back during Hostboot Runtime (HBRT). Hostboot will need to
+    wait to save the values until after p9_chiplet_scominit is called because that
+    HWP sets the fir masks we want to save off. Values will need to restored
+    after the PEER_TARGET values have been updated in HBRT
+  </description>
+  <valueType>uint64</valueType>
+  <initToZero/>
+  <writeable/>
+  <platInit/>
+</attribute>
+<!-- ********************************************************************** -->
+<attribute>
+  <id>ATTR_IO_PB_IOOFIR_MASK</id>
+  <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+  <description>
+    This attribute provides a place for Hostboot to save off the PB_IOOFIR_MASK.
+    During IPL time Hostboot wants to change the value of the FIR but it will
+    write the value back during Hostboot Runtime (HBRT). Hostboot will need to
+    wait to save the values until after p9_chiplet_scominit is called because that
+    HWP sets the fir masks we want to save off. Values will need to restored
+    after the PEER_TARGET values have been updated in HBRT
+  </description>
+  <valueType>uint64</valueType>
+  <initToZero/>
+  <writeable/>
+  <platInit/>
+</attribute>
+<!-- ********************************************************************** -->
+<attribute>
   <id>ATTR_IO_O_CHANNEL_TYPE</id>
   <targetType>TARGET_TYPE_OBUS</targetType>
   <description>
@@ -129,5 +163,4 @@
   <platInit/>
 </attribute>
 <!-- ********************************************************************** -->
-
 </attributes>
diff --git a/src/import/chips/p9/procedures/xml/error_info/p9_io_obus_errors.xml b/src/import/chips/p9/procedures/xml/error_info/p9_io_obus_errors.xml
index 19b0b8689..0efba8eeb 100755
--- a/src/import/chips/p9/procedures/xml/error_info/p9_io_obus_errors.xml
+++ b/src/import/chips/p9/procedures/xml/error_info/p9_io_obus_errors.xml
@@ -5,7 +5,7 @@
 <!--                                                                        -->
 <!-- OpenPOWER HostBoot Project                                             -->
 <!--                                                                        -->
-<!-- Contributors Listed Below - COPYRIGHT 2015,2017                        -->
+<!-- Contributors Listed Below - COPYRIGHT 2015,2018                        -->
 <!-- [+] International Business Machines Corp.                              -->
 <!--                                                                        -->
 <!--                                                                        -->
@@ -53,4 +53,13 @@
         </callout>
     </hwpError>
     <!-- *********************************************************************** -->
+    <hwpError>
+        <rc>RC_P9_IO_FIRMASK_RESTORE_ERROR</rc>
+        <description>Attempted to restore OBUS firmasks when values were never saved</description>
+        <ffdc>TARGET</ffdc>
+        <callout>
+            <procedure>CODE</procedure>
+            <priority>HIGH</priority>
+        </callout>
+    </hwpError>
 </hwpErrors>