NVDIMM: Mask mbacalfir at the beginning of restore step during mpipl

Mask MBACALFIR[8]: EVENT_N: MBACALFIR_MASK_OR = 0x0080000000000000
at the beginning of nvdimm_restore() to avoid PRD errors.
This mask is normal for non-mpipl path, so just needed for mpipl.

CQ: SW477028
Change-Id: I3368b89af67f58edecb42dd0a99ca7799679e84d
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/84190
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: TSUNG K YEUNG <tyeung@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>
Reviewed-by: Corey V Swenson <cswenson@us.ibm.com>
Reviewed-by: Daniel M Crowell <dcrowell@us.ibm.com>

src/usr/isteps/nvdimm/nvdimm.C

@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2019                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2020                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -1134,6 +1134,32 @@ errlHndl_t nvdimmValidImage(Target *i_nvdimm, bool &o_imgValid)
     return l_err;
 }
 
+void maskMbacalfir_eventn(TARGETING::Target* i_nvdimm)
+{
+    errlHndl_t l_err = nullptr;
+    TargetHandleList l_mcaList;
+    uint64_t l_writeData;
+    uint32_t l_writeAddress;
+    size_t l_writeSize = sizeof(l_writeData);
+
+    getParentAffinityTargets(l_mcaList, i_nvdimm, CLASS_UNIT, TYPE_MCA);
+    assert(l_mcaList.size(), "maskMbacalfir_eventn() failed to find parent MCA.");
+
+    l_writeAddress = MBACALFIR_OR_MASK_REG;
+    l_writeData = MBACALFIR_EVENTN_OR_BIT;
+    l_err = deviceWrite(l_mcaList[0], &l_writeData, l_writeSize,
+                        DEVICE_SCOM_ADDRESS(l_writeAddress));
+    if(l_err)
+    {
+        TRACFCOMP(g_trac_nvdimm,
+            ERR_MRK "Failed to mask MBACALFIR EventN using address "
+            "0x%08x on NVDIMM 0x%08X MCA 0x%08X",
+            l_writeAddress, get_huid(i_nvdimm), get_huid(l_mcaList[0]));
+        l_err->collectTrace(NVDIMM_COMP_NAME);
+        errlCommit( l_err, NVDIMM_COMP_ID );
+    }
+}
+
 #ifndef __HOSTBOOT_RUNTIME
 /**
  * @brief This function handles all the restore related operations.
@@ -1175,6 +1201,11 @@ errlHndl_t nvdimmRestore(TargetHandleList& io_nvdimmList, uint8_t &i_mpipl)
             if (i_mpipl)
             {
                 TRACFCOMP(g_trac_nvdimm, "nvdimmRestore(): in MPIPL");
+
+                // To avoid PRD error during mpipl need to Mask MBACALFIR EventN
+                // Note: a regular IPL will already have this masked
+                maskMbacalfir_eventn(*it);
+
                 FAPI_INVOKE_HWP(l_err, mss::ddr_resetn, l_fapi_mca, HIGH);
 
                 if (l_err)
@@ -1755,7 +1786,6 @@ errlHndl_t nvdimmEpowSetup(TargetHandleList &i_nvdimmList)
 }
 
 
-
 /**
  * @brief Entry function to NVDIMM restore
  *        - Restore image from NVDIMM NAND flash to DRAM

src/usr/isteps/nvdimm/nvdimm.H

@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2019                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2020                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -513,6 +513,14 @@ enum mbacal_bitmask_values : uint64_t
     MBACALFIR_UNMASK_BIT     = 0xff7fffffffffffff,
 };
 
+
+/**
+ * @brief Mask MCBACALFIR Event N to prevent PRD from handling event
+ *
+ * @param[in] - i_nvdimm - nvdimm target for operation on its parent MCA
+ */
+void maskMbacalfir_eventn(TARGETING::Target* i_nvdimm);
+
 /**
  * @brief Wrapper to call deviceOp to read the NV controller via I2C
  *