Add internal flag support to prevent OCC resets and query pstate tables

Change-Id: Ifd30c8bf36aa82c168afa3e34de7fd8f4d4e4cab
RTC: 152379
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/24987
Tested-by: Jenkins Server
Reviewed-by: Martha Broyles <mbroyles@us.ibm.com>
Tested-by: FSP CI Jenkins
Reviewed-by: Sheldon R. Bailey <baileysh@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

9 files changed, 695 insertions, 387 deletions

diff --git a/src/usr/htmgt/genPstate.C b/src/usr/htmgt/genPstate.C
index a4fb2680f..7ceb6de5d 100644
--- a/src/usr/htmgt/genPstate.C
+++ b/src/usr/htmgt/genPstate.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2015                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2016                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -120,4 +120,69 @@ errlHndl_t genPstateTables(bool i_normalTables)
     }
     return err;
 }
+
+
+bool getPstateTable(const bool      i_normalTables,
+                    const uint8_t   i_proc,
+                    uint16_t      & o_dataLen,
+                    uint8_t       * o_dataPtr)
+{
+    bool copied = false;
+
+    TargetHandleList processors;
+    getChipResources(processors,
+                     TYPE_PROC,
+                     UTIL_FILTER_FUNCTIONAL);
+    for(TargetHandleList::const_iterator
+        procItr = processors.begin();
+        procItr != processors.end();
+        ++procItr)
+    {
+        Target * procTarget = *procItr;
+        const uint8_t procInstance =
+            procTarget->getAttr<TARGETING::ATTR_POSITION>();
+        if (i_proc == procInstance)
+        {
+            const uint8_t l_occ = 0;
+            TargetHandleList occs;
+            getChildChiplets(occs,
+                             procTarget,
+                             TYPE_OCC,
+                             true);
+            Target * occTarget = occs[l_occ];
+            ATTR_HUID_type huid = occTarget->getAttr<ATTR_HUID>();
+            // Read data from attribute for specified occ
+            if (i_normalTables)
+            {
+                TMGT_INF("Dumping PStateTable for Proc%d OCC%d (HUID 0x%08X)",
+                         i_proc, l_occ, huid);
+                ATTR_PSTATE_TABLE_type * pstateDataPtr =
+                    reinterpret_cast<ATTR_PSTATE_TABLE_type*>(o_dataPtr);
+
+                occTarget->tryGetAttr<ATTR_PSTATE_TABLE>(*pstateDataPtr);
+                o_dataLen = sizeof(ATTR_PSTATE_TABLE_type);
+                copied = true;
+            }
+            else
+            {
+                TMGT_INF("Dumping MFG PStateTable for Proc%d OCC%d"
+                         " (HUID 0x%08X)", i_proc, l_occ, huid);
+                ATTR_PSTATE_TABLE_MFG_type * pstateDataPtr =
+                    reinterpret_cast<ATTR_PSTATE_TABLE_MFG_type*>(o_dataPtr);
+
+                occTarget->tryGetAttr<ATTR_PSTATE_TABLE_MFG>(*pstateDataPtr);
+                o_dataLen = sizeof(ATTR_PSTATE_TABLE_MFG_type);
+                copied = true;
+            }
+
+            // Just dump for first OCC
+            break;
+        }
+    }
+
+    return copied;
+
+} // end getPstateTable()
+
+
 }; // end namespace
diff --git a/src/usr/htmgt/genPstate.H b/src/usr/htmgt/genPstate.H
index 6b302131f..46512d4a9 100644
--- a/src/usr/htmgt/genPstate.H
+++ b/src/usr/htmgt/genPstate.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2015                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2016                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -42,5 +42,10 @@ namespace HTMGT
  */
 errlHndl_t genPstateTables(bool i_normalTables);
 
+bool getPstateTable(const bool      i_normalTables,
+                    const uint8_t   i_proc,
+                    uint16_t      & o_dataLen,
+                    uint8_t       * o_dataPtr);
+
 };
 #endif
diff --git a/src/usr/htmgt/htmgt.C b/src/usr/htmgt/htmgt.C
index 502b661e0..fb23ee008 100644
--- a/src/usr/htmgt/htmgt.C
+++ b/src/usr/htmgt/htmgt.C
@@ -44,8 +44,8 @@
 // HBOCC support
 #include <hwpf/hwp/occ/occ_common.H>
 
-
 #include <sys/time.h>
+#include <targeting/common/attributeTank.H>
 
 namespace HTMGT
 {
@@ -55,7 +55,7 @@ namespace HTMGT
     void processOccStartStatus(const bool i_startCompleted,
                                TARGETING::Target * i_failedOccTarget)
     {
-        TMGT_INF(">>processOccStartStatus(%d,%p)",
+        TMGT_INF(">>processOccStartStatus(%d,0x%p)",
                  i_startCompleted, i_failedOccTarget);
         errlHndl_t l_err = NULL;
         uint32_t l_huid = 0;
@@ -65,156 +65,170 @@ namespace HTMGT
         }
         TMGT_INF("processOccStartStatus(Start Success=%c, failedOcc=0x%08X)",
                  i_startCompleted?'y':'n', l_huid);
-        if (i_startCompleted)
+        if (false == int_flags_set(FLAG_HOLD_OCCS_IN_RESET))
         {
-            // Query functional OCCs
-            l_err = OccManager::buildOccs();
-            if (NULL == l_err)
+            if (i_startCompleted)
             {
-                if (NULL != OccManager::getMasterOcc())
+                // Query functional OCCs
+                l_err = OccManager::buildOccs();
+                if (NULL == l_err)
                 {
-                    do
+                    if (NULL != OccManager::getMasterOcc())
                     {
-#ifndef __HOSTBOOT_RUNTIME
-                        // Build normal pstate tables (once per IPL)
-                        l_err = genPstateTables(true);
-                        if(l_err)
+                        do
                         {
-                            break;
-                        }
+#ifndef __HOSTBOOT_RUNTIME
+                            // Build normal pstate tables (once per IPL)
+                            l_err = genPstateTables(true);
+                            if(l_err)
+                            {
+                                break;
+                            }
 
-                        // Calc memory throttles (once per IPL)
-                        calcMemThrottles();
+                            // Calc memory throttles (once per IPL)
+                            calcMemThrottles();
 #endif
 
-                        // Make sure OCCs are ready for communication
-                        l_err = OccManager::waitForOccCheckpoint();
-                        if (l_err)
-                        {
-                            break;
-                        }
+                            // Make sure OCCs are ready for communication
+                            OccManager::waitForOccCheckpoint();
 
 #ifdef __HOSTBOOT_RUNTIME
-                        // TODO RTC 124738  Final solution TBD
-                        //  Perhapse POLL scom 0x6a214 until bit 31 is set?
-                        nanosleep(1,0);
+                            // TODO RTC 124738  Final solution TBD
+                            //  Perhapse POLL scom 0x6a214 until bit 31 is set?
+                            nanosleep(1,0);
 #endif
 
-                        // Send poll to establish comm
-                        TMGT_INF("Send initial poll to all OCCs to"
-                                 " establish comm");
-                        l_err = OccManager::sendOccPoll();
-                        if (l_err)
-                        {
-                            if (OccManager::occNeedsReset())
+                            // Send poll to establish comm
+                            TMGT_INF("Send initial poll to all OCCs to"
+                                     " establish comm");
+                            l_err = OccManager::sendOccPoll();
+                            if (l_err)
                             {
-                                // No need to continue if reset is required
-                                TMGT_ERR("sendOccConfigData(): OCCs need "
-                                         "to be reset");
-                                break;
-                            }
-                            else
-                            {
-                                // Continue even if failed (will be retried)
-                                ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                                if (OccManager::occNeedsReset())
+                                {
+                                    // No need to continue if reset is required
+                                    TMGT_ERR("sendOccConfigData(): OCCs need "
+                                             "to be reset");
+                                    break;
+                                }
+                                else
+                                {
+                                    // Continue even if failed (will be retried)
+                                    ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                                }
                             }
-                        }
 
-                        // Send ALL config data
-                        sendOccConfigData();
+                            // Send ALL config data
+                            sendOccConfigData();
 
-                        // Set the User PCAP
-                        l_err = sendOccUserPowerCap();
-                        if (l_err)
-                        {
-                            break;
-                        }
+                            // Set the User PCAP
+                            l_err = sendOccUserPowerCap();
+                            if (l_err)
+                            {
+                                break;
+                            }
 
-                        // Wait for all OCCs to go to the target state
-                        l_err = waitForOccState();
-                        if ( l_err )
-                        {
-                            break;
-                        }
+                            // Wait for all OCCs to go to the target state
+                            l_err = waitForOccState();
+                            if ( l_err )
+                            {
+                                break;
+                            }
 
-                        // Set active sensors for all OCCs,
-                        // so BMC can start communication with OCCs
-                        l_err = setOccActiveSensors(true);
-                        if (l_err)
-                        {
-                            // Continue even if failed to update sensor
-                            ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
-                        }
+                            // Set active sensors for all OCCs,
+                            // so BMC can start communication with OCCs
+                            l_err = setOccActiveSensors(true);
+                            if (l_err)
+                            {
+                                // Continue even if failed to update sensor
+                                ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                            }
 
-                    } while(0);
+                        } while(0);
+                    }
+                    else
+                    {
+                        TMGT_ERR("Unable to find any Master capable OCCs");
+                        /*@
+                         * @errortype
+                         * @reasoncode      HTMGT_RC_OCC_MASTER_NOT_FOUND
+                         * @moduleid        HTMGT_MOD_LOAD_START_STATUS
+                         * @userdata1       number of OCCs
+                         * @devdesc         No OCC master was found
+                         */
+                        bldErrLog(l_err, HTMGT_MOD_LOAD_START_STATUS,
+                                  HTMGT_RC_OCC_MASTER_NOT_FOUND,
+                                  0, OccManager::getNumOccs(), 0, 0,
+                                  ERRORLOG::ERRL_SEV_INFORMATIONAL);
+                    }
                 }
                 else
                 {
-                    TMGT_ERR("Unable to find any Master capable OCCs");
-                    /*@
-                     * @errortype
-                     * @reasoncode      HTMGT_RC_OCC_MASTER_NOT_FOUND
-                     * @moduleid        HTMGT_MOD_LOAD_START_STATUS
-                     * @userdata1       number of OCCs
-                     * @devdesc         No OCC master was found
-                     */
-                    bldErrLog(l_err, HTMGT_MOD_LOAD_START_STATUS,
-                              HTMGT_RC_OCC_MASTER_NOT_FOUND,
-                              0, OccManager::getNumOccs(), 0, 0,
-                              ERRORLOG::ERRL_SEV_INFORMATIONAL);
+                    // Failed to find functional OCCs, no need to try again
+                    // Set original error log  as unrecoverable and commit
+                    l_err->setSev(ERRORLOG::ERRL_SEV_UNRECOVERABLE);
+                    ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
                 }
             }
             else
             {
-                // Failed to find functional OCCs, no need to try again
-                // Set original error log  as unrecoverable and commit
-                l_err->setSev(ERRORLOG::ERRL_SEV_UNRECOVERABLE);
-                ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                TMGT_ERR("All OCCs were not loaded/started successfully");
+                /*@
+                 * @errortype
+                 * @reasoncode      HTMGT_RC_OCC_START_FAIL
+                 * @moduleid        HTMGT_MOD_LOAD_START_STATUS
+                 * @userdata1       Failing OCC HUID
+                 * @devdesc         OCCs were not loaded/started successfully
+                 */
+                bldErrLog(l_err, HTMGT_MOD_LOAD_START_STATUS,
+                          HTMGT_RC_OCC_START_FAIL,
+                          0, l_huid, 0, 0,
+                          ERRORLOG::ERRL_SEV_INFORMATIONAL);
             }
-        }
-        else
-        {
-            TMGT_ERR("All OCCs were not loaded/started successfully");
-            /*@
-             * @errortype
-             * @reasoncode      HTMGT_RC_OCC_START_FAIL
-             * @moduleid        HTMGT_MOD_LOAD_START_STATUS
-             * @userdata1       Failing OCC HUID
-             * @devdesc         OCCs were not loaded/started successfully
-             */
-            bldErrLog(l_err, HTMGT_MOD_LOAD_START_STATUS,
-                      HTMGT_RC_OCC_START_FAIL,
-                      0, l_huid, 0, 0,
-                      ERRORLOG::ERRL_SEV_INFORMATIONAL);
-        }
 
-        if (NULL != l_err)
-        {
-            TMGT_ERR("OCCs not all active (rc=0x%04X).  Attempting OCC "
-                     "Reset", l_err->reasonCode());
-            TMGT_CONSOLE("OCCs are not active (rc=0x%04X). "
-                         "Attempting OCC Reset",
-                         l_err->reasonCode());
-            TMGT_INF("processOccStartStatus: Calling resetOccs");
-            errlHndl_t err2 = OccManager::resetOccs(NULL);
-            if(err2)
+            if (NULL != l_err)
             {
-                TMGT_ERR("OccManager::resetOccs failed with 0x%04X",
-                         err2->reasonCode());
+                TMGT_ERR("OCCs not all active (rc=0x%04X).  Attempting OCC "
+                         "Reset", l_err->reasonCode());
+                TMGT_CONSOLE("OCCs are not active (rc=0x%04X). "
+                             "Attempting OCC Reset",
+                             l_err->reasonCode());
+                TMGT_INF("processOccStartStatus: Calling resetOccs");
+                errlHndl_t err2 = OccManager::resetOccs(NULL);
+                if(err2)
+                {
+                    TMGT_ERR("OccManager::resetOccs failed with 0x%04X",
+                             err2->reasonCode());
 
-                // Set original error log  as unrecoverable and commit
-                l_err->setSev(ERRORLOG::ERRL_SEV_UNRECOVERABLE);
-                ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                    // Set original error log  as unrecoverable and commit
+                    l_err->setSev(ERRORLOG::ERRL_SEV_UNRECOVERABLE);
+                    ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
 
-                // Commit occReset error
-                ERRORLOG::errlCommit(err2, HTMGT_COMP_ID);
+                    // Commit occReset error
+                    ERRORLOG::errlCommit(err2, HTMGT_COMP_ID);
+                }
+                else
+                {
+                    // retry worked - commit original error as informational
+                    l_err->setSev(ERRORLOG::ERRL_SEV_INFORMATIONAL);
+                    ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
+                }
             }
-            else
+        }
+        else
+        {
+            TMGT_INF("processOccStartStatus: Skipping start of OCCS due to "
+                     "internal flags 0x%08X", get_int_flags());
+            // Reset all OCCs
+            TMGT_INF("processOccStartStatus: Calling HBOCC::stopAllOCCs");
+            l_err = HBOCC::stopAllOCCs();
+            if(l_err)
             {
-                // retry worked - commit original error as informational
                 l_err->setSev(ERRORLOG::ERRL_SEV_INFORMATIONAL);
+                l_err->collectTrace("HTMGT");
                 ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
             }
+
         }
 
         TMGT_INF("<<processOccStartStatus()");
@@ -226,7 +240,7 @@ namespace HTMGT
     // Notify HTMGT that an OCC has an error to report
     void processOccError(TARGETING::Target * i_procTarget)
     {
-        TMGT_INF(">>processOccError(%p)", i_procTarget);
+        TMGT_INF(">>processOccError(0x%p)", i_procTarget);
 
         TARGETING::Target* sys = NULL;
         TARGETING::targetService().getTopLevelTarget(sys);
@@ -302,7 +316,7 @@ namespace HTMGT
     // Notify HTMGT that an OCC has failed and needs to be reset
     void processOccReset(TARGETING::Target * i_proc)
     {
-        TMGT_INF(">>processOccReset(%p)", i_proc);
+        TMGT_INF(">>processOccReset(0x%p)", i_proc);
         errlHndl_t errl = NULL;
         TARGETING::Target * failedOccTarget = NULL;
 
@@ -318,14 +332,12 @@ namespace HTMGT
             return;
         }
 
-        if (i_proc)
+        // Get functional OCC (one per proc)
+        TARGETING::TargetHandleList pOccs;
+        getChildChiplets(pOccs, i_proc, TARGETING::TYPE_OCC);
+        if (pOccs.size() > 0)
         {
-            TARGETING::TargetHandleList pOccs;
-            getChildChiplets(pOccs, i_proc, TARGETING::TYPE_OCC);
-            if (pOccs.size() > 0)
-            {
-                failedOccTarget = pOccs[0];
-            }
+            failedOccTarget = pOccs[0];
         }
 
         if(NULL != failedOccTarget)
@@ -359,12 +371,21 @@ namespace HTMGT
             ERRORLOG::errlCommit(errl, HTMGT_COMP_ID); // sets errl to NULL
         }
 
-        errl = OccManager::resetOccs(failedOccTarget);
-        if(errl)
+        if (false == int_flags_set(FLAG_EXT_RESET_DISABLED))
         {
-            ERRORLOG::errlCommit(errl, HTMGT_COMP_ID); // sets errl to NULL
+            errl = OccManager::resetOccs(failedOccTarget);
+            if(errl)
+            {
+                ERRORLOG::errlCommit(errl, HTMGT_COMP_ID); // sets errl to NULL
+            }
+        }
+        else
+        {
+            TMGT_INF("processOccReset: Skipping external reset due to "
+                     "internal flags 0x%08X", get_int_flags());
         }
         TMGT_INF("<<processOccReset()");
+
     } // end processOccReset()
 
 
@@ -460,6 +481,57 @@ namespace HTMGT
 
 
 
+    errlHndl_t dumpAttribute(const uint16_t  i_length,
+                             const uint8_t * i_data,
+                             uint16_t      & o_attrLength,
+                             uint8_t       * o_attrData)
+    {
+        errlHndl_t err = NULL;
+        uint32_t attrId = 0;
+
+        if ((i_data[0] == ATTR_RAW) && (i_length == 5))
+        {
+            // Dump attribute based on raw ID
+
+            attrId = UINT32_GET(&i_data[1]);
+            TMGT_INF("Attempting to read attribute 0x%08X", attrId);
+            //if (TARGETING::AttributeTank::attributeExists(attrId))
+            //{
+            //    if (TARGETING::AttributeTank::getAttribute(attrId,
+            //            TARGETING::TYPE_SYS, AttributeTank::ATTR_POS_NA,
+            //            AttributeTank::ATTR_UNIT_POS_NA,
+            //            AttributeTank::ATTR_NODE_NA, attrPtr))
+            //    {
+            //        //  // Got attribute!
+            //    }
+            //}
+        }
+        else if ((i_data[0] == ATTR_PSTATE) || (i_data[0] == ATTR_PSTATE_MFG))
+        {
+            uint8_t selectedOcc = 0;
+            if (i_length >= 2)
+            {
+                selectedOcc = i_data[1];
+            }
+            getPstateTable((i_data[0] == ATTR_PSTATE),
+                           selectedOcc, o_attrLength, o_attrData);
+        }
+        else
+        {
+            TMGT_ERR("dumpAttribute: Invalid attribute specified 0x%02X "
+                     "(length %d)", i_data[0], i_length);
+            bldErrLog(err, HTMGT_MOD_PASS_THRU,
+                      HTMGT_RC_INVALID_PARAMETER,
+                      UINT32_GET(&i_data[0]),
+                      UINT32_GET(&i_data[4]),
+                      0, i_length,
+                      ERRORLOG::ERRL_SEV_INFORMATIONAL);
+        }
+        return err;
+    }
+
+
+
     // Send pass-thru command to HTMGT
     errlHndl_t passThruCommand(uint16_t   i_cmdLength,
                                uint8_t *  i_cmdData,
@@ -470,190 +542,223 @@ namespace HTMGT
         htmgtReasonCode failingSrc = HTMGT_RC_NO_ERROR;
         o_rspLength = 0;
 
-        err = OccManager::buildOccs();
-        if (NULL == err)
+        if ((i_cmdLength > 0) && (NULL != i_cmdData))
         {
-            if ((i_cmdLength > 0) && (NULL != i_cmdData))
+            switch (i_cmdData[0])
             {
-                switch (i_cmdData[0])
-                {
-                    case PASSTHRU_OCC_STATUS:
-                        TMGT_INF("passThruCommand: OCC Status");
-                        OccManager::getOccData(o_rspLength, o_rspData);
-                        break;
+                case PASSTHRU_OCC_STATUS:
+                    TMGT_INF("passThruCommand: OCC Status");
+                    OccManager::getOccData(o_rspLength, o_rspData);
+                    break;
+
+                case PASSTHRU_GENERATE_MFG_PSTATE:
+                    if (i_cmdLength == 1)
+                    {
+                        TMGT_INF("passThruCommand: Generate MFG pstate tables",
+                                 i_cmdData[1]);
+                        err = genPstateTables(false);
+                    }
+                    else
+                    {
+                        TMGT_ERR("passThruCommand: invalid generate pstate "
+                                 "command length %d", i_cmdLength);
+                        /*@
+                         * @errortype
+                         * @reasoncode   HTMGT_RC_INVALID_LENGTH
+                         * @moduleid     HTMGT_MOD_PASS_THRU
+                         * @userdata1    command data[0-7]
+                         * @userdata2    command data length
+                         * @devdesc      Invalid pass thru command data length
+                         */
+                        failingSrc = HTMGT_RC_INVALID_LENGTH;
+                    }
+                    break;
 
-                    case PASSTHRU_GENERATE_MFG_PSTATE:
-                        if (i_cmdLength == 1)
+                case PASSTHRU_LOAD_PSTATE:
+                    if (i_cmdLength == 2)
+                    {
+                        const uint8_t pstateType = i_cmdData[1];
+                        if ((0 == pstateType) || (1 == pstateType))
                         {
-                            TMGT_INF("passThruCommand: Generate MFG pstate "
-                                     "tables", i_cmdData[1]);
-                            err = genPstateTables(false);
+                            TMGT_INF("passThruCommand: Load pstate tables "
+                                     "(type: %d)", pstateType);
+                            // 0 = Normal Pstate Tables
+                            err = OccManager::loadPstates(0 == pstateType);
                         }
                         else
                         {
-                            TMGT_ERR("passThruCommand: invalid generate pstate "
-                                     "command length %d", i_cmdLength);
+                            TMGT_ERR("passThruCommand: invalid pstate type "
+                                     "specified: %d", pstateType);
                             /*@
                              * @errortype
-                             * @reasoncode   HTMGT_RC_INVALID_LENGTH
+                             * @reasoncode   HTMGT_RC_INVALID_PARAMETER
                              * @moduleid     HTMGT_MOD_PASS_THRU
                              * @userdata1    command data[0-7]
                              * @userdata2    command data length
-                             * @devdesc      Invalid pass thru command data len
+                             * @devdesc      Invalid load pstate table type
                              */
-                            failingSrc = HTMGT_RC_INVALID_LENGTH;
+                            failingSrc = HTMGT_RC_INVALID_PARAMETER;
                         }
-                        break;
+                    }
+                    else
+                    {
+                        TMGT_ERR("passThruCommand: invalid load pstate "
+                                 "command length %d", i_cmdLength);
+                        failingSrc = HTMGT_RC_INVALID_LENGTH;
+                    }
+                    break;
+
+                case PASSTHRU_INTERNAL_FLAG:
+                    if (i_cmdLength == 1)
+                    {
+                        // get internal flag value
+                        o_rspLength = 4;
+                        UINT32_PUT(o_rspData, get_int_flags());
+                    }
+                    else if (i_cmdLength == 5)
+                    {
+                        // set internal flag value
+                        TMGT_INF("passThruCommand: Updating internal flags "
+                                 "from 0x%08X to 0x%08X",
+                                 get_int_flags(), UINT32_GET(&i_cmdData[1]));
+                        set_int_flags(UINT32_GET(&i_cmdData[1]));
+                    }
+                    else
+                    {
+                        TMGT_ERR("passThruCommand: invalid internal flag "
+                                 "length %d", i_cmdLength);
+                        failingSrc = HTMGT_RC_INVALID_LENGTH;
+                    }
+                    break;
 
-                    case PASSTHRU_LOAD_PSTATE:
-                        if (i_cmdLength == 2)
+                case PASSTHRU_SEND_OCC_COMMAND:
+                    if (i_cmdLength >= 3)
+                    {
+                        const uint8_t occInstance = i_cmdData[1];
+                        const occCommandType occCmd =
+                            (occCommandType)i_cmdData[2];
+                        const uint16_t dataLen = i_cmdLength-3;
+                        Occ *occPtr = OccManager::getOcc(occInstance);
+                        if (occPtr)
                         {
-                            const uint8_t pstateType = i_cmdData[1];
-                            if ((0 == pstateType) || (1 == pstateType))
+                            TMGT_INF("passThruCommand: Send OCC%d command "
+                                     "0x%02X (%d bytes)",
+                                     occInstance, occCmd, dataLen);
+                            OccCmd cmd(occPtr, occCmd, dataLen, &i_cmdData[3]);
+                            err = cmd.sendOccCmd();
+                            if (err != NULL)
                             {
-                                TMGT_INF("passThruCommand: Load pstate tables "
-                                         "(type: %d)", pstateType);
-                                // 0 = Normal Pstate Tables
-                                err = OccManager::loadPstates(0 == pstateType);
+                                TMGT_ERR("passThruCommand: OCC%d cmd 0x%02X "
+                                         "failed with rc 0x%04X",
+                                         occInstance, occCmd,
+                                         err->reasonCode());
                             }
                             else
                             {
-                                TMGT_ERR("passThruCommand: invalid pstate "
-                                         "type specified: %d", pstateType);
-                                /*@
-                                 * @errortype
-                                 * @reasoncode   HTMGT_RC_INVALID_PARAMETER
-                                 * @moduleid     HTMGT_MOD_PASS_THRU
-                                 * @userdata1    command data[0-7]
-                                 * @userdata2    command data length
-                                 * @devdesc      Invalid load pstate table type
-                                 */
-                                failingSrc = HTMGT_RC_INVALID_PARAMETER;
+                                uint8_t *rspPtr = NULL;
+                                o_rspLength = cmd.getResponseData(rspPtr);
+                                memcpy(o_rspData, rspPtr, o_rspLength);
+                                TMGT_INF("passThruCommand: OCC%d rsp status "
+                                         "0x%02X (%d bytes)", occInstance,
+                                         o_rspData[2], o_rspLength);
                             }
                         }
                         else
                         {
-                            TMGT_ERR("passThruCommand: invalid load pstate "
-                                     "command length %d", i_cmdLength);
-                            failingSrc = HTMGT_RC_INVALID_LENGTH;
+                            TMGT_ERR("passThruCommand: Unable to find OCC%d",
+                                     occInstance);
+                            /*@
+                             * @errortype
+                             * @reasoncode   HTMGT_RC_OCC_UNAVAILABLE
+                             * @moduleid     HTMGT_MOD_PASS_THRU
+                             * @userdata1    command data[0-7]
+                             * @userdata2    command data length
+                             * @devdesc      Specified OCC not available
+                             */
+                            failingSrc = HTMGT_RC_OCC_UNAVAILABLE;
                         }
-                        break;
+                    }
+                    else
+                    {
+                        TMGT_ERR("passThruCommand: invalid OCC command "
+                                 "length %d", i_cmdLength);
+                        failingSrc = HTMGT_RC_INVALID_LENGTH;
+                    }
+                    break;
 
-                    case PASSTHRU_SEND_OCC_COMMAND:
-                        if (i_cmdLength >= 3)
+                case PASSTHRU_CLEAR_RESET_COUNTS:
+                    TMGT_INF("passThruCommand: Clear all OCC reset counts");
+                    OccManager::clearResetCounts();
+                    break;
+
+                case PASSTHRU_EXIT_SAFE_MODE:
+                    {
+                        TMGT_INF("passThruCommand: Clear Safe Mode");
+                        // Clear OCC reset counts and failed flags
+                        OccManager::clearResetCounts();
+                        // Clear safe mode reason
+                        OccManager::updateSafeModeReason(0, 0);
+                        // Clear system safe mode flag/attribute
+                        TARGETING::Target* sys = NULL;
+                        TARGETING::targetService().getTopLevelTarget(sys);
+                        const uint8_t safeMode = 0;
+                        // Mark system as NOT being in safe mode
+                        if(sys)
                         {
-                            const uint8_t occInstance = i_cmdData[1];
-                            const occCommandType occCmd =
-                                (occCommandType)i_cmdData[2];
-                            const uint16_t dataLen = i_cmdLength-3;
-                            Occ *occPtr = OccManager::getOcc(occInstance);
-                            if (occPtr)
-                            {
-                                TMGT_INF("passThruCommand: Send OCC%d command "
-                                         "0x%02X (%d bytes)",
-                                         occInstance, occCmd, dataLen);
-                                OccCmd cmd(occPtr, occCmd, dataLen,
-                                           &i_cmdData[3]);
-                                err = cmd.sendOccCmd();
-                                if (err != NULL)
-                                {
-                                    TMGT_ERR("passThruCommand: OCC%d cmd "
-                                             "0x%02X failed with rc 0x%04X",
-                                             occInstance, occCmd,
-                                             err->reasonCode());
-                                }
-                                else
-                                {
-                                    uint8_t *rspPtr = NULL;
-                                    o_rspLength = cmd.getResponseData(rspPtr);
-                                    memcpy(o_rspData, rspPtr, o_rspLength);
-                                    TMGT_INF("passThruCommand: OCC%d rsp "
-                                             "status 0x%02X (%d bytes)",
-                                             occInstance, o_rspData[2],
-                                             o_rspLength);
-                                }
-                            }
-                            else
-                            {
-                                TMGT_ERR("passThruCommand: Unable to find "
-                                         "OCC%d", occInstance);
-                                /*@
-                                 * @errortype
-                                 * @reasoncode   HTMGT_RC_OCC_UNAVAILABLE
-                                 * @moduleid     HTMGT_MOD_PASS_THRU
-                                 * @userdata1    command data[0-7]
-                                 * @userdata2    command data length
-                                 * @devdesc      Specified OCC not available
-                                 */
-                                failingSrc = HTMGT_RC_OCC_UNAVAILABLE;
-                            }
+                            sys->setAttr<TARGETING::ATTR_HTMGT_SAFEMODE>
+                                (safeMode);
                         }
-                        else
+                        // Reset the OCCs (do not increment reset count
+                        // or attempt comm with OCC since they are in reset)
+                        TMGT_INF("passThruCommand: Calling resetOccs");
+                        err = OccManager::resetOccs(NULL, true, true);
+                        if (err != NULL)
                         {
-                            TMGT_ERR("passThruCommand: invalid OCC command "
-                                     "length %d", i_cmdLength);
-                            failingSrc = HTMGT_RC_INVALID_LENGTH;
+                            TMGT_ERR("passThruCommand: resetOccs failed "
+                                     "with rc 0x%04X", err->reasonCode());
                         }
-                        break;
-
-                    case PASSTHRU_CLEAR_RESET_COUNTS:
-                        TMGT_INF("passThruCommand: Clear all OCC reset counts");
-                        OccManager::clearResetCounts();
-                        break;
+                    }
+                    break;
 
-                    case PASSTHRU_EXIT_SAFE_MODE:
-                        {
-                            TMGT_INF("passThruCommand: Clear Safe Mode");
-                            // Clear OCC reset counts and failed flags
-                            OccManager::clearResetCounts();
-                            // Clear safe mode reason
-                            OccManager::updateSafeModeReason(0, 0);
-                            // Clear system safe mode flag/attribute
-                            TARGETING::Target* sys = NULL;
-                            TARGETING::targetService().getTopLevelTarget(sys);
-                            const uint8_t safeMode = 0;
-                            if(sys)
-                            {
-                                sys->setAttr<TARGETING::ATTR_HTMGT_SAFEMODE>
-                                    (safeMode);
-                            }
-                            // Reset the OCCs (do not increment reset count
-                            // or attempt comm with OCC since they are in reset)
-                            TMGT_INF("passThruCommand: Calling resetOccs");
-                            err = OccManager::resetOccs(NULL, true, true);
-                            if (err != NULL)
-                            {
-                                TMGT_ERR("passThruCommand: resetOccs failed "
-                                         "with rc 0x%04X", err->reasonCode());
-                            }
-                        }
-                        break;
+                case PASSTHRU_DUMP_ATTRIBUTE:
+                    if (i_cmdLength >= 2)
+                    {
+                        TMGT_INF("passThruCommand: Dump Attribute 0x%02X",
+                                 i_cmdData[1]);
+                        err = dumpAttribute(i_cmdLength-1, &i_cmdData[1],
+                                            o_rspLength, o_rspData);
+                    }
+                    else
+                    {
+                        TMGT_ERR("passThruCommand: invalid dump attribute "
+                                 "command length %d", i_cmdLength);
+                        failingSrc = HTMGT_RC_INVALID_LENGTH;
+                    }
+                    break;
 
-                    default:
-                        TMGT_ERR("passThruCommand: Invalid command 0x%08X "
-                                 "(%d bytes)",
-                                 UINT32_GET(i_cmdData), i_cmdLength);
-                        /*@
-                         * @errortype
-                         * @reasoncode   HTMGT_RC_INVALID_DATA
-                         * @moduleid     HTMGT_MOD_PASS_THRU
-                         * @userdata1    command data[0-7]
-                         * @userdata2    command data length
-                         * @devdesc      Invalid pass thru command
-                         */
-                        failingSrc = HTMGT_RC_INVALID_DATA;
-                        break;
-                }
+                default:
+                    TMGT_ERR("passThruCommand: Invalid command 0x%08X "
+                             "(%d bytes)", UINT32_GET(i_cmdData), i_cmdLength);
+                    /*@
+                     * @errortype
+                     * @reasoncode   HTMGT_RC_INVALID_DATA
+                     * @moduleid     HTMGT_MOD_PASS_THRU
+                     * @userdata1    command data[0-7]
+                     * @userdata2    command data length
+                     * @devdesc      Invalid pass thru command
+                     */
+                    failingSrc = HTMGT_RC_INVALID_DATA;
+                    break;
+            }
 
-                if ((HTMGT_RC_NO_ERROR != failingSrc) && (NULL == err))
-                {
-                    bldErrLog(err, HTMGT_MOD_PASS_THRU,
-                              failingSrc,
-                              UINT32_GET(i_cmdData),
-                              UINT32_GET(&i_cmdData[4]),
-                              0, i_cmdLength,
-                              ERRORLOG::ERRL_SEV_INFORMATIONAL);
-                }
+            if ((HTMGT_RC_NO_ERROR != failingSrc) && (NULL == err))
+            {
+                bldErrLog(err, HTMGT_MOD_PASS_THRU,
+                          failingSrc,
+                          UINT32_GET(i_cmdData),
+                          UINT32_GET(&i_cmdData[4]),
+                          0, i_cmdLength,
+                          ERRORLOG::ERRL_SEV_INFORMATIONAL);
             }
         }
 
@@ -662,4 +767,3 @@ namespace HTMGT
     } // end passThruCommand()
 
 }
-
diff --git a/src/usr/htmgt/htmgt_occ.C b/src/usr/htmgt/htmgt_occ.C
index 8b34c525a..ee9639dfe 100644
--- a/src/usr/htmgt/htmgt_occ.C
+++ b/src/usr/htmgt/htmgt_occ.C
@@ -730,138 +730,154 @@ namespace HTMGT
         err = _buildOccs(); // if not a already built.
         if (NULL == err)
         {
-            err = setOccActiveSensors(false); // Set OCC sensor to inactive
-            if( err )
+            if (false == int_flags_set(FLAG_RESET_DISABLED))
             {
-                TMGT_ERR("_resetOccs: Set OCC sensors to inactive failed.");
-                // log and continue
-                ERRORLOG::errlCommit(err, HTMGT_COMP_ID);
-            }
-
-            if (false == i_skipComm)
-            {
-                // Send poll cmd to all OCCs to establish comm
-                err = _sendOccPoll(false,NULL);
-                if (err)
+                err = setOccActiveSensors(false); // Set OCC sensor to inactive
+                if( err )
                 {
-                    TMGT_ERR("_resetOccs: Poll OCCs failed.");
-                    // Proceed with reset even if failed
+                    TMGT_ERR("_resetOccs: Set OCC sensors to inactive failed.");
+                    // log and continue
                     ERRORLOG::errlCommit(err, HTMGT_COMP_ID);
                 }
-            }
 
-            for(occList_t::const_iterator occ = iv_occArray.begin();
-                occ != iv_occArray.end();
-                ++occ)
-            {
-                if((*occ)->getTarget() == i_failedOccTarget)
+                if (false == i_skipComm)
                 {
-                    (*occ)->failed(true);
+                    // Send poll cmd to all OCCs to establish comm
+                    err = _sendOccPoll(false,NULL);
+                    if (err)
+                    {
+                        TMGT_ERR("_resetOccs: Poll OCCs failed.");
+                        // Proceed with reset even if failed
+                        ERRORLOG::errlCommit(err, HTMGT_COMP_ID);
+                    }
                 }
 
-
-                if (false == i_skipComm)
+                for(occList_t::const_iterator occ = iv_occArray.begin();
+                    occ != iv_occArray.end();
+                    ++occ)
                 {
-                    // Send reset prep cmd to all OCCs
-                    if((*occ)->resetPrep())
+                    if((*occ)->getTarget() == i_failedOccTarget)
                     {
-                        atThreshold = true;
+                        (*occ)->failed(true);
+                    }
+
+                    if (false == i_skipComm)
+                    {
+                        // Send reset prep cmd to all OCCs
+                        if((*occ)->resetPrep())
+                        {
+                            atThreshold = true;
+                        }
                     }
                 }
-            }
 
-            if ((false == i_skipCountIncrement) && (false == _occFailed()))
-            {
-                // No OCC has been marked failed, increment sys reset count
-                ++iv_resetCount;
+                if ((false == i_skipCountIncrement) && (false == _occFailed()))
+                {
+                    // No OCC has been marked failed, increment sys reset count
+                    ++iv_resetCount;
 
-                TMGT_INF("_resetOCCs: Incrementing system OCC reset count"
-                         " to %d", iv_resetCount);
+                    TMGT_INF("_resetOCCs: Incrementing system OCC reset count"
+                             " to %d", iv_resetCount);
 
-                if(iv_resetCount > OCC_RESET_COUNT_THRESHOLD)
-                {
-                    atThreshold = true;
+                    if(iv_resetCount > OCC_RESET_COUNT_THRESHOLD)
+                    {
+                        atThreshold = true;
+                    }
                 }
-            }
-            // else failed OCC reset count will be incremented automatically
-
-            // Update OCC states to RESET
-            for(occList_t::const_iterator occ = iv_occArray.begin();
-                occ != iv_occArray.end();
-                ++occ)
-            {
-                (*occ)->iv_state = OCC_STATE_RESET;
-            }
+                // else failed OCC reset count will be incremented automatically
 
-            uint64_t retryCount = OCC_RESET_COUNT_THRESHOLD;
-            while(retryCount)
-            {
-                // Reset all OCCs
-                TMGT_INF("_resetOccs: Calling HBOCC::stopAllOCCs");
-                err = HBOCC::stopAllOCCs();
-                if(!err)
+                // Update OCC states to RESET
+                for(occList_t::const_iterator occ = iv_occArray.begin();
+                    occ != iv_occArray.end();
+                    ++occ)
                 {
-                    break;
+                    (*occ)->iv_state = OCC_STATE_RESET;
                 }
-                --retryCount;
 
-                if(retryCount)
+                uint64_t retryCount = OCC_RESET_COUNT_THRESHOLD;
+                while(retryCount)
                 {
-                    // log if not last retry
-                    ERRORLOG::errlCommit(err, HTMGT_COMP_ID);
+                    // Reset all OCCs
+                    TMGT_INF("_resetOccs: Calling HBOCC::stopAllOCCs");
+                    err = HBOCC::stopAllOCCs();
+                    if(!err)
+                    {
+                        break;
+                    }
+                    --retryCount;
+
+                    if (int_flags_set(FLAG_HALT_ON_RESET_FAIL))
+                    {
+                        TMGT_ERR("_resetOCCs: stopAllOCCs failed with 0x%04X "
+                                 "and HALT_ON_RESET_FAIL is set.  Resets will "
+                                 "be disabled", err->reasonCode());
+                        set_int_flags(get_int_flags() | FLAG_RESET_DISABLED);
+                        break;
+                    }
+
+                    if(retryCount)
+                    {
+                        // log if not last retry
+                        ERRORLOG::errlCommit(err, HTMGT_COMP_ID);
+                    }
+                    else
+                    {
+                        TMGT_ERR("_resetOCCs: stopAllOCCs failed. "
+                                 "Leaving OCCs in reset state");
+                        // pass err handle back
+                        err->collectTrace("HTMGT");
+                    }
                 }
-                else
+
+                if(!atThreshold && !err)
                 {
-                    TMGT_ERR("_resetOCCs: stopAllOCCs failed. "
-                             "Leaving OCCs in reset state");
-                    // pass err handle back
-                    err->collectTrace("HTMGT");
-                }
-            }
+                    for(occList_t::const_iterator occ = iv_occArray.begin();
+                        occ != iv_occArray.end();
+                        ++occ)
+                    {
+                        // After OCCs have been reset, clear flags
+                        (*occ)->postResetClear();
+                    }
 
-            if(!atThreshold && !err)
-            {
-                for(occList_t::const_iterator occ = iv_occArray.begin();
-                    occ != iv_occArray.end();
-                    ++occ)
+                    TMGT_INF("_resetOccs: Calling HBOCC::activateOCCs");
+                    err = HBOCC::activateOCCs();
+                    if(err)
+                    {
+                        TMGT_ERR("_resetOCCs: activateOCCs failed. ");
+                        err->collectTrace("HTMGT");
+                    }
+                }
+                else if (!err) // Reset Threshold reached and no other err
                 {
-                    // After OCCs have been reset, clear flags
-                    (*occ)->postResetClear();
+                    // Create threshold error
+                    TMGT_ERR("_resetOCCs: Retry Threshold reached. "
+                             "Leaving OCCs in reset state");
+                    /*@
+                     * @errortype
+                     * @moduleid HTMGT_MOD_OCC_RESET
+                     * @reasoncode HTMGT_RC_OCC_RESET_THREHOLD
+                     * @userdata1  return code triggering safe mode
+                     * @userdata2  OCC instance
+                     * @devdesc OCC reset threshold reached.
+                     *          Leaving OCCs in reset state
+                     */
+                    bldErrLog(err,
+                              HTMGT_MOD_OCC_RESET,
+                              HTMGT_RC_OCC_CRIT_FAILURE,
+                              0, cv_safeReturnCode, 0, cv_safeOccInstance,
+                              ERRORLOG::ERRL_SEV_UNRECOVERABLE);
                 }
 
-                TMGT_INF("_resetOccs: Calling HBOCC::activateOCCs");
-                err = HBOCC::activateOCCs();
+                // Any error at this point means OCCs were not reactivated
                 if(err)
                 {
-                    TMGT_ERR("_resetOCCs: activateOCCs failed. ");
-                    err->collectTrace("HTMGT");
+                    updateForSafeMode(err);
                 }
             }
-            else if (!err) // Reset Threshold reached and no other err
-            {
-                // Create threshold error
-                TMGT_ERR("_resetOCCs: Retry Threshold reached. "
-                         "Leaving OCCs in reset state");
-                /*@
-                 * @errortype
-                 * @moduleid HTMGT_MOD_OCC_RESET
-                 * @reasoncode HTMGT_RC_OCC_RESET_THREHOLD
-                 * @userdata1  return code triggering safe mode
-                 * @userdata2  OCC instance
-                 * @devdesc OCC reset threshold reached.
-                 *          Leaving OCCs in reset state
-                 */
-                bldErrLog(err,
-                          HTMGT_MOD_OCC_RESET,
-                          HTMGT_RC_OCC_CRIT_FAILURE,
-                          0, cv_safeReturnCode, 0, cv_safeOccInstance,
-                          ERRORLOG::ERRL_SEV_UNRECOVERABLE);
-            }
-
-            // Any error at this point means OCCs were not reactivated
-            if(err)
+            else
             {
-                updateForSafeMode(err);
+                TMGT_INF("_resetOccs: Skipping OCC reset due to "
+                         "internal flags 0x%08X", get_int_flags());
             }
         }
 
@@ -1008,8 +1024,8 @@ namespace HTMGT
                     {
                         ERRORLOG::errlCommit(l_err, HTMGT_COMP_ID);
                     }
-
-                    (*pOcc)->failed(true);
+                    TMGT_ERR("waitForOccCheckpoint OCC%d still NOT ready!",
+                             (*pOcc)->getInstance());
                 }
             }
         }
@@ -1168,6 +1184,7 @@ namespace HTMGT
         return err;
     }
 
+
     // Consolidate all OCC states
     void OccManager::_syncOccStates()
     {
@@ -1230,6 +1247,7 @@ namespace HTMGT
                 }
             }
         }
+
         if (iv_resetCount != 0)
         {
             TMGT_INF("_clearResetCounts: Clearing system reset count "
diff --git a/src/usr/htmgt/htmgt_utility.C b/src/usr/htmgt/htmgt_utility.C
index e880d5a0c..5edbc512b 100644
--- a/src/usr/htmgt/htmgt_utility.C
+++ b/src/usr/htmgt/htmgt_utility.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2015                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2016                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -179,4 +179,44 @@ namespace HTMGT
     }
 
 
+    // Retrieve the internalFlags
+    uint32_t get_int_flags()
+    {
+        uint32_t flags = 0;
+        TARGETING::Target* sys = NULL;
+        TARGETING::targetService().getTopLevelTarget(sys);
+        if (sys)
+        {
+            sys->tryGetAttr<TARGETING::ATTR_HTMGT_INTERNAL_FLAGS>(flags);
+        }
+        return flags;
+    }
+
+
+    // Set the internal flags value
+    void set_int_flags(const uint32_t i_value)
+    {
+        TARGETING::Target* sys = NULL;
+        TARGETING::targetService().getTopLevelTarget(sys);
+        if (sys)
+        {
+            sys->trySetAttr<TARGETING::ATTR_HTMGT_INTERNAL_FLAGS>(i_value);
+        }
+    }
+
+
+    // Query if specified internal flag(s) are set
+    bool int_flags_set(const uint32_t i_mask)
+    {
+        bool flags_are_set = false;
+
+        const uint32_t flags = get_int_flags();
+        if ((flags & i_mask) == i_mask)
+        {
+            flags_are_set = true;
+        }
+
+        return flags_are_set;
+    }
+
 } // end namespace
diff --git a/src/usr/htmgt/htmgt_utility.H b/src/usr/htmgt/htmgt_utility.H
index ad93a0575..d0c70ec20 100644
--- a/src/usr/htmgt/htmgt_utility.H
+++ b/src/usr/htmgt/htmgt_utility.H
@@ -101,6 +101,20 @@ namespace HTMGT
     };
     extern uint32_t G_debug_trace;
 
+    enum internalFlagTypes
+    {
+        FLAG_HALT_ON_OCC_SRC       = 0x00800000, // Prevent resets after SRC
+        FLAG_HALT_ON_RESET_FAIL    = 0x00000100, // Stop additional resets
+        FLAG_EXT_RESET_DISABLED    = 0x00000080, // Ignore opal-prd/BMC resets
+        FLAG_DISABLE_MEM_THROTTLE  = 0x00000040,
+        FLAG_IGNORE_OCC_STATE      = 0x00000020,
+        FLAG_HOLD_OCCS_IN_RESET    = 0x00000010, // Ignore load/start status
+        FLAG_LOAD_REQUEST_DISABLED = 0x00000008,
+        FLAG_TERMINATE_ON_ERROR    = 0x00000004,
+        FLAG_RESET_DISABLED        = 0x00000002, // Ignore any OCC reset
+        FLAG_EXTERNAL_OVERRIDE     = 0x00000001
+    };
+
     enum tmgtElogSubsecTypes
     {
         // Values selected to be common with FSP from tmgt_elog_parser.H
@@ -123,11 +137,20 @@ namespace HTMGT
     enum htmgtPassThruCmds
     {
         PASSTHRU_OCC_STATUS             = 0x01,
+        PASSTHRU_INTERNAL_FLAG          = 0x02, // get or set internal flags
         PASSTHRU_SEND_OCC_COMMAND       = 0x03, // send raw OCC command
         PASSTHRU_CLEAR_RESET_COUNTS     = 0x04,
         PASSTHRU_EXIT_SAFE_MODE         = 0x05,
         PASSTHRU_GENERATE_MFG_PSTATE    = 0x81,
-        PASSTHRU_LOAD_PSTATE            = 0x82
+        PASSTHRU_LOAD_PSTATE            = 0x82,
+        PASSTHRU_DUMP_ATTRIBUTE         = 0x83
+    };
+
+    enum htmgtAttrName
+    {
+        ATTR_PSTATE         = 0x01,
+        ATTR_PSTATE_MFG     = 0x02,
+        ATTR_RAW            = 0xFF
     };
 
     /**
@@ -187,5 +210,31 @@ namespace HTMGT
     const char *state_string(const uint8_t i_state);
 
 
+    /**
+     * @brief Retrieve the internal flag (attribute) value
+     *
+     * @return the flag value (on error will return 0)
+     */
+     uint32_t get_int_flags();
+
+
+     /**
+      * @brief Update internal flags to specified value
+      *
+      * @param[in] i_value - new value for internal flags
+      */
+     void set_int_flags(const uint32_t i_value);
+
+
+     /**
+      * @brief Query if specified internal flag(s) are set
+      *
+      * @param[in] i_mask - bits to query the internalFlags
+      *
+      * @return true if all of the bits of i_mask are set in internalFlags
+      */
+     bool int_flags_set(const uint32_t i_mask);
+
+
 } // end namespace
 #endif
diff --git a/src/usr/htmgt/occError.C b/src/usr/htmgt/occError.C
index 00e4cc0e1..9af585c17 100644
--- a/src/usr/htmgt/occError.C
+++ b/src/usr/htmgt/occError.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2015                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2016                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -255,6 +255,18 @@ namespace HTMGT
                 ERRORLOG::errlCommit(err2, HTMGT_COMP_ID);
             }
 
+            if (int_flags_set(FLAG_HALT_ON_OCC_SRC))
+            {
+                // Check if OCC SRC matches our trigger SRC
+                if ((l_occSrc & 0xFF) == (get_int_flags() >> 24))
+                {
+                    TMGT_ERR("occProcessElog: OCC%d reported 0x%04X and "
+                             "HALT_ON_SRC is set.  Resets will be disabled",
+                             iv_instance, l_occSrc);
+                    set_int_flags(get_int_flags() | FLAG_RESET_DISABLED);
+                }
+            }
+
             // Add full OCC error log data as a User Details section
             l_errlHndl->addFFDC(OCCC_COMP_ID,
                                 l_occElog,
diff --git a/src/usr/targeting/common/xmltohb/attribute_types_hb.xml b/src/usr/targeting/common/xmltohb/attribute_types_hb.xml
index 00f9d63bf..492a7a407 100644
--- a/src/usr/targeting/common/xmltohb/attribute_types_hb.xml
+++ b/src/usr/targeting/common/xmltohb/attribute_types_hb.xml
@@ -835,6 +835,20 @@
 </attribute>
 
 <attribute>
+    <id>HTMGT_INTERNAL_FLAGS</id>
+    <description>HTMGT internal flags
+    </description>
+    <simpleType>
+        <uint32_t>
+            <default>0</default>
+        </uint32_t>
+    </simpleType>
+    <persistency>volatile-zeroed</persistency>
+    <readable/>
+    <writeable/>
+</attribute>
+
+<attribute>
     <id>OT_MIN_N_PER_MBA</id>
     <description>
         Lowest per MBA numerator ever allowed when OCC is
diff --git a/src/usr/targeting/common/xmltohb/target_types_hb.xml b/src/usr/targeting/common/xmltohb/target_types_hb.xml
index d1457a1d6..c1384d4a2 100755
--- a/src/usr/targeting/common/xmltohb/target_types_hb.xml
+++ b/src/usr/targeting/common/xmltohb/target_types_hb.xml
@@ -72,6 +72,7 @@
     <attribute><id>OPEN_POWER_N_PLUS_ONE_MAX_MEM_POWER_WATTS</id></attribute>
     <attribute><id>OPEN_POWER_TURBO_MODE_SUPPORTED</id></attribute>
     <attribute><id>OCC_CONTROL_DATA</id></attribute>
+    <attribute><id>HTMGT_INTERNAL_FLAGS</id></attribute>
     <attribute><id>OPAL_MODEL</id></attribute>
     <attribute><id>HTMGT_SAFEMODE</id></attribute>
     <attribute><id>IPMI_SENSORS</id></attribute>