PRD: Support for handling core unit checkstop

Change-Id: Ia0ef737ea394028fb3dfb2af168a245aa0655460
RTC: 136049
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/59390
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: Zane C. Shelley <zshelle@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/59764
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/usr/diag/prdf/common/plat/prdfTargetServices.C b/src/usr/diag/prdf/common/plat/prdfTargetServices.C
index cb4dce961..3892a7c45 100755
--- a/src/usr/diag/prdf/common/plat/prdfTargetServices.C
+++ b/src/usr/diag/prdf/common/plat/prdfTargetServices.C
@@ -941,6 +941,27 @@ ExtensibleChip * getConnectedChild( ExtensibleChip * i_parent,
 
 //------------------------------------------------------------------------------
 
+ExtensibleChip * getNeighborCore( ExtensibleChip * i_core )
+{
+    PRDF_ASSERT( nullptr != i_core );
+
+    TargetHandle_t thisCore = i_core->getTrgt();
+    ExtensibleChip * neighborCore = nullptr;
+    TargetHandleList list =
+      getConnected(getConnectedParent(thisCore, TYPE_EX), TYPE_CORE);
+
+    for ( auto & trgt : list)
+    {
+        if ( trgt != thisCore )
+        {
+            neighborCore = (ExtensibleChip *)systemPtr->GetChip(trgt);
+            break;
+        }
+    }
+    return neighborCore;
+}
+//------------------------------------------------------------------------------
+
 TargetHandle_t getConnectedPeerTarget( TargetHandle_t i_target )
 {
     #define PRDF_FUNC "[PlatServices::getConnectedPeerTarget] "