SBE Update Support for Adjusted Nest Frequency

This commit adds a check in istep 8.1 to see if the SBE Seeproms are
programmed with the same NEST_FREQ_MHZ attribute value that the system is
currently running at.  If necessary, it will update the SBE Seeproms in this
step which might result in a re-IPL.

Change-Id: I1dca7196cd02a2704a238665b73b522c9e103936
RTC:133406
Depends-on:I9bba92f55f1b67ff4a15d79113f19d39272ec72d
Backport: release-fips840
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/20229
Tested-by: Jenkins Server
Tested-by: FSP CI Jenkins
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

9 files changed, 648 insertions, 155 deletions

diff --git a/src/usr/hwpf/hwp/activate_powerbus/activate_powerbus.C b/src/usr/hwpf/hwp/activate_powerbus/activate_powerbus.C
index 4cb1d3a91..642b53996 100644
--- a/src/usr/hwpf/hwp/activate_powerbus/activate_powerbus.C
+++ b/src/usr/hwpf/hwp/activate_powerbus/activate_powerbus.C
@@ -347,9 +347,12 @@ void * call_host_slave_sbe_update( void * io_pArgs )
     do
     {
 
+        // Slave processors should now use Host I2C Access Method
+        I2C::i2cSetAccessMode( I2C::I2C_SET_ACCESS_MODE_PROC_HOST );
+
         // Reset I2C devices before trying to access the SBE SEEPROMs
         // Any error returned should not fail istep
-        l_errl = I2C::i2cResetActiveMasters( I2C::I2C_PROC_HOST );
+        l_errl = I2C::i2cResetActiveMasters( I2C::I2C_PROC_ALL );
         if (l_errl)
         {
             // Commit error and keep going
diff --git a/src/usr/hwpf/hwp/edi_ei_initialization/edi_ei_initialization.C b/src/usr/hwpf/hwp/edi_ei_initialization/edi_ei_initialization.C
index ae02ad832..e1ab17db2 100644
--- a/src/usr/hwpf/hwp/edi_ei_initialization/edi_ei_initialization.C
+++ b/src/usr/hwpf/hwp/edi_ei_initialization/edi_ei_initialization.C
@@ -5,7 +5,9 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* COPYRIGHT International Business Machines Corp. 2012,2014              */
+/* Contributors Listed Below - COPYRIGHT 2012,2015                        */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
 /*                                                                        */
 /* Licensed under the Apache License, Version 2.0 (the "License");        */
 /* you may not use this file except in compliance with the License.       */
@@ -53,6 +55,8 @@
 #include    <hwas/common/deconfigGard.H>
 #include    <hwas/common/hwasCommon.H>
 
+#include    <sbe/sbeif.H>
+
 //  targeting support
 #include    <targeting/common/commontargeting.H>
 #include    <targeting/common/utilFilter.H>
@@ -102,6 +106,35 @@ void*    call_fabric_erepair( void    *io_pArgs )
     errlHndl_t l_errl = NULL;
     TRACFCOMP( ISTEPS_TRACE::g_trac_isteps_trace, "call_fabric_erepair entry" );
 
+    do {
+
+    // Check if the system can support multiple nest frequencies
+    // and if so, see if an SBE Update is required
+    TARGETING::Target* l_sys = NULL;
+    targetService().getTopLevelTarget(l_sys);
+    assert( l_sys != NULL, "call_fabric_erepair: sys target is NULL" );
+    MRW_NEST_CAPABLE_FREQUENCIES_SYS l_mrw_nest_capable;
+    l_mrw_nest_capable =
+               l_sys->getAttr<ATTR_MRW_NEST_CAPABLE_FREQUENCIES_SYS>();
+    if ( l_mrw_nest_capable ==
+               MRW_NEST_CAPABLE_FREQUENCIES_SYS_2000_MHZ_OR_2400_MHZ )
+    {
+        // Call to check Processor SBE SEEPROM Images against NEST_FREQ_MHZ
+        // attributes and make any necessary updates
+        l_errl = SBE::updateProcessorSbeSeeproms(
+                            SBE::SBE_UPDATE_ONLY_CHECK_NEST_FREQ);
+
+        if (l_errl)
+        {
+            // Create IStep error log and cross reference error that occurred
+            l_StepError.addErrorDetails( l_errl );
+            // Commit error
+            errlCommit( l_errl, HWPF_COMP_ID );
+            break;
+        }
+
+    }
+
     std::vector<uint8_t> l_endp1_txFaillanes;
     std::vector<uint8_t> l_endp1_rxFaillanes;
     std::vector<uint8_t> l_endp2_txFaillanes;
@@ -278,6 +311,8 @@ void*    call_fabric_erepair( void    *io_pArgs )
         } // end for l_PbusConnections
     } // end for MaxBusSet
 
+    } while (0);
+
     TRACFCOMP( ISTEPS_TRACE::g_trac_isteps_trace, "call_fabric_erepair exit" );
 
     return l_StepError.getErrorHandle();
diff --git a/src/usr/hwpf/hwp/slave_sbe/slave_sbe.C b/src/usr/hwpf/hwp/slave_sbe/slave_sbe.C
index c74402df3..949314433 100644
--- a/src/usr/hwpf/hwp/slave_sbe/slave_sbe.C
+++ b/src/usr/hwpf/hwp/slave_sbe/slave_sbe.C
@@ -194,6 +194,7 @@ void* call_host_slave_sbe_config(void *io_pArgs)
         errlCommit( err, HWPF_COMP_ID );
     }
 
+
     TRACDCOMP( ISTEPS_TRACE::g_trac_isteps_trace,
                "call_host_slave_sbe_config exit" );
 
@@ -616,16 +617,6 @@ void* call_proc_check_slave_sbe_seeprom_complete( void *io_pArgs )
 
     }   // endfor
 
-    // Slave processors should now use Host I2C Access Method
-    I2C::i2cSetAccessMode( I2C::I2C_SET_ACCESS_MODE_PROC_HOST );
-
-    // Reset the Processor's I2C Masters
-    l_errl = I2C::i2cResetActiveMasters(I2C::I2C_PROC_ALL);
-    if (l_errl)
-    {
-        // Commit error
-        errlCommit( l_errl, HWPF_COMP_ID );
-    }
 
     TRACFCOMP(ISTEPS_TRACE::g_trac_isteps_trace,
               "call_proc_check_slave_sbe_seeprom_complete exit");
diff --git a/src/usr/sbe/sbe_update.C b/src/usr/sbe/sbe_update.C
index 28e42fc3d..1faad637b 100644
--- a/src/usr/sbe/sbe_update.C
+++ b/src/usr/sbe/sbe_update.C
@@ -34,6 +34,7 @@
 #include <targeting/common/predicates/predicatectm.H>
 #include <targeting/common/utilFilter.H>
 #include <targeting/common/targetservice.H>
+#include <targeting/common/target.H>
 #include <util/align.H>
 #include <util/crc32.H>
 #include <util/misc.H>
@@ -82,13 +83,13 @@ static bool g_mbox_query_done   = false;
 static bool g_mbox_query_result = false;
 static bool g_istep_mode        = false;
 static bool g_update_both_sides = false;
+static uint32_t g_current_nest_freq = 0;
 
 using namespace ERRORLOG;
 using namespace TARGETING;
 
 namespace SBE
 {
-
     enum {
         SBE_IMG_VADDR = VMM_VADDR_SBE_UPDATE,
         RING_BUF1_VADDR = FIXED_SEEPROM_WORK_SPACE + SBE_IMG_VADDR,
@@ -100,7 +101,7 @@ namespace SBE
     };
 
 /////////////////////////////////////////////////////////////////////
-    errlHndl_t updateProcessorSbeSeeproms()
+    errlHndl_t updateProcessorSbeSeeproms(sbeUpdateCheckType i_check_type)
     {
         errlHndl_t err = NULL;
         errlHndl_t err_cleanup = NULL;
@@ -111,7 +112,8 @@ namespace SBE
         bool l_restartNeeded   = false;
 
         TRACUCOMP( g_trac_sbe,
-                   ENTER_MRK"updateProcessorSbeSeeproms()" );
+                   ENTER_MRK"updateProcessorSbeSeeproms(): i_check_type=%d",
+                   i_check_type);
 
         do{
 
@@ -171,6 +173,10 @@ namespace SBE
                 g_update_both_sides = true;
             }
 
+            // Collect ATTR_NEST_FREQ_MHZ for reference later
+            g_current_nest_freq = sys->getAttr<ATTR_NEST_FREQ_MHZ>();
+
+
             //Make sure procedure constants keep within expected range.
             assert((FIXED_SEEPROM_WORK_SPACE <= VMM_SBE_UPDATE_SIZE/2),
                    "updateProcessorSbeSeeproms() FIXED_SEEPROM_WORK_SPACE "
@@ -261,7 +267,8 @@ namespace SBE
                     sbeState.target_is_master = false;
                 }
 
-                err = getSbeInfoState(sbeState);
+                err = getSbeInfoState(sbeState,
+                                      i_check_type);
 
                 if (err)
                 {
@@ -273,15 +280,29 @@ namespace SBE
                                TARGETING::get_huid(sbeState.target));
 
                     // Don't break - handle error at the end of the loop
-
                 }
 
 
+                // Continue if we're just doing the nest freq check and don't
+                // have a mismatch
+                if ( ( i_check_type == SBE_UPDATE_ONLY_CHECK_NEST_FREQ ) &&
+                     ( sbeState.seeprom_0_ver_Nest_Freq_Mismatch == false ) &&
+                     ( sbeState.seeprom_1_ver_Nest_Freq_Mismatch == false ) )
+                {
+                    TRACFCOMP( g_trac_sbe,
+                               INFO_MRK"updateProcessorSbeSeeproms(): "
+                               "Only looking for Nest Freq Mismatch and "
+                               "none found for Target UID=0x%X",
+                               TARGETING::get_huid(sbeState.target));
+
+                    sbeState.update_actions = CLEAR_ACTIONS;
+                }
+
                 /**********************************************/
                 /*  Determine update actions for this target  */
                 /**********************************************/
                 // Skip if we got an error collecting SBE Info State
-                if ( err == NULL )
+                else if ( err == NULL )
                 {
                     err = getTargetUpdateActions(sbeState);
                     if (err)
@@ -295,6 +316,7 @@ namespace SBE
 
                         // Don't break - handle error at the end of the loop,
                     }
+
                 }
 
                 /**********************************************/
@@ -406,15 +428,19 @@ namespace SBE
             /* Deconfigure any Processors that have a Version different */
             /*   from the Master Processor's Version                    */
             /************************************************************/
-            err = masterVersionCompare(sbeStates_vector);
-
-            if ( err )
+            // skip if we're only checking for NEST_FREQ mismatch
+            if ( i_check_type != SBE_UPDATE_ONLY_CHECK_NEST_FREQ )
             {
-                // Something failed on the check
-                TRACFCOMP( g_trac_sbe,
-                           INFO_MRK"updateProcessorSbeSeeproms(): Call to "
-                           "masterVersionCompare() failed rc=0x%.4X",
-                           err->reasonCode());
+                err = masterVersionCompare(sbeStates_vector);
+
+                if ( err )
+                {
+                    // Something failed on the check
+                    TRACFCOMP( g_trac_sbe,
+                               INFO_MRK"updateProcessorSbeSeeproms(): Call to "
+                               "masterVersionCompare() failed rc=0x%.4X",
+                               err->reasonCode());
+                }
             }
 
         }while(0);
@@ -451,7 +477,6 @@ namespace SBE
             }
         }
 
-
         TRACUCOMP( g_trac_sbe,
                    EXIT_MRK"updateProcessorSbeSeeproms()" );
 
@@ -865,6 +890,7 @@ namespace SBE
                 }
             }  // end of while loop
 
+
             if(err)
             {
                 // There was a previous error, so break here
@@ -1312,14 +1338,16 @@ namespace SBE
         }while(0);
 
         TRACFCOMP( g_trac_sbe,
-                   EXIT_MRK"getSbeBootSeeprom(): o_bootSide=0x%X (reg=0x%X)",
-                   o_bootSide, scomData );
+                   EXIT_MRK"getSbeBootSeeprom(): o_bootSide=0x%X (reg=0x%X, "
+                   "tgt=0x%X)",
+                   o_bootSide, scomData, TARGETING::get_huid(i_target) );
 
         return err;
     }
 
 /////////////////////////////////////////////////////////////////////
-    errlHndl_t getSbeInfoState(sbeTargetState_t& io_sbeState)
+    errlHndl_t getSbeInfoState(sbeTargetState_t& io_sbeState,
+                               sbeUpdateCheckType& i_check_type)
     {
 
         TRACUCOMP( g_trac_sbe,
@@ -1328,6 +1356,7 @@ namespace SBE
 
 
         errlHndl_t err = NULL;
+        bool skip_customization = false;
 
         do{
 
@@ -1338,6 +1367,74 @@ namespace SBE
 
 
             /*******************************************/
+            /*  Get SEEPROM A SBE Version Information  */
+            /*******************************************/
+            err = getSeepromSideVersion(io_sbeState.target,
+                                       EEPROM::SBE_PRIMARY,
+                                       io_sbeState.seeprom_0_ver,
+                                       io_sbeState.seeprom_0_ver_ECC_fail);
+
+            if(err)
+            {
+                TRACFCOMP( g_trac_sbe, ERR_MRK"getSbeInfoState() - Error "
+                           "getting SBE Information from SEEPROM A (0x%X)",
+                EEPROM::SBE_PRIMARY);
+                break;
+            }
+
+            TRACDBIN(g_trac_sbe, "getSbeInfoState-spA",
+                     &(io_sbeState.seeprom_0_ver),
+                     sizeof(sbeSeepromVersionInfo_t));
+
+
+            /*******************************************/
+            /*  Get SEEPROM B SBE Version Information  */
+            /*******************************************/
+            err = getSeepromSideVersion(io_sbeState.target,
+                                        EEPROM::SBE_BACKUP,
+                                        io_sbeState.seeprom_1_ver,
+                                        io_sbeState.seeprom_1_ver_ECC_fail);
+
+            if(err)
+            {
+                TRACFCOMP( g_trac_sbe, ERR_MRK"getSbeInfoState() - Error "
+                           "getting SBE Information from SEEPROM B (0x%X)",
+                           EEPROM::SBE_BACKUP);
+                break;
+            }
+
+            TRACDBIN(g_trac_sbe, "getSbeInfoState-spB",
+                     &(io_sbeState.seeprom_1_ver),
+                    sizeof(sbeSeepromVersionInfo_t));
+
+
+            // Check NEST_FREQ settings
+            err = checkNestFreqSettings(io_sbeState);
+
+            if (err)
+            {
+                TRACFCOMP( g_trac_sbe, ERR_MRK"getSbeInfoState() - "
+                           "Error returned from checkNestFreqSettings() ");
+                break;
+            }
+            else if ((i_check_type == SBE_UPDATE_ONLY_CHECK_NEST_FREQ) &&
+                     (io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch == false) &&
+                     (io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch == false))
+            {
+                TRACFCOMP( g_trac_sbe,
+                           INFO_MRK"getSbeInfoState(): "
+                           "Only looking for Nest Freq Mismatch and "
+                           "none found for Target UID=0x%X. Skipping "
+                           "SBE customization",
+                           TARGETING::get_huid(io_sbeState.target));
+
+                // Skipping SBE customization, but still need other info like
+                // MVPD in the case another processor requires a re-IPL
+                skip_customization = true;
+            }
+
+
+            /*******************************************/
             /*  Get PNOR SBE Version Information       */
             /*******************************************/
             void* sbePnorPtr = NULL;
@@ -1367,12 +1464,15 @@ namespace SBE
             /*  Calculate CRC of the image             */
             /*******************************************/
             size_t sbeImgSize = 0;
-            err = procCustomizeSbeImg(io_sbeState.target,
+            if ( skip_customization == false )
+            {
+                err = procCustomizeSbeImg(io_sbeState.target,
                                 sbePnorPtr,     //SBE vaddr in PNOR
                                 FIXED_SEEPROM_WORK_SPACE,  //max size
                                 reinterpret_cast<void*>
                                 (SBE_IMG_VADDR),  //destination
                                 sbeImgSize);
+            }
 
             if(err)
             {
@@ -1421,47 +1521,6 @@ namespace SBE
             }
 
 
-            /*******************************************/
-            /*  Get SEEPROM A SBE Version Information  */
-            /*******************************************/
-            err = getSeepromSideVersion(io_sbeState.target,
-                                       EEPROM::SBE_PRIMARY,
-                                       io_sbeState.seeprom_0_ver,
-                                       io_sbeState.seeprom_0_ver_ECC_fail);
-
-            if(err)
-            {
-                TRACFCOMP( g_trac_sbe, ERR_MRK"getSbeInfoState() - Error "
-                           "getting SBE Information from SEEPROM A (0x%X)",
-                EEPROM::SBE_PRIMARY);
-                break;
-            }
-
-            TRACDBIN(g_trac_sbe, "getSbeInfoState-spA",
-                     &(io_sbeState.seeprom_0_ver),
-                     sizeof(sbeSeepromVersionInfo_t));
-
-            /*******************************************/
-            /*  Get SEEPROM B SBE Version Information  */
-            /*******************************************/
-            err = getSeepromSideVersion(io_sbeState.target,
-                                        EEPROM::SBE_BACKUP,
-                                        io_sbeState.seeprom_1_ver,
-                                        io_sbeState.seeprom_1_ver_ECC_fail);
-
-            if(err)
-            {
-                TRACFCOMP( g_trac_sbe, ERR_MRK"getSbeInfoState() - Error "
-                           "getting SBE Information from SEEPROM B (0x%X)",
-                           EEPROM::SBE_BACKUP);
-                break;
-            }
-
-
-            TRACDBIN(g_trac_sbe, "getSbeInfoState-spB",
-                     &(io_sbeState.seeprom_1_ver),
-                    sizeof(sbeSeepromVersionInfo_t));
-
             /***********************************************/
             /*  Determine which SEEPROM System Booted On   */
             /***********************************************/
@@ -1525,7 +1584,6 @@ namespace SBE
                                      sbeSeepromVersionInfo_t& o_info,
                                      bool& o_seeprom_ver_ECC_fail)
     {
-
         TRACUCOMP( g_trac_sbe,
                    ENTER_MRK"getSeepromSideVersion(): HUID=0x%.8X, side:%d",
                    TARGETING::get_huid(i_target), i_seepromSide);
@@ -1534,22 +1592,21 @@ namespace SBE
         PNOR::ECC::eccStatus eccStatus = PNOR::ECC::CLEAN;
         o_seeprom_ver_ECC_fail = false;
 
-        size_t sbeInfoSize_ECC = (sizeof(sbeSeepromVersionInfo_t)*9)/8;
-        size_t sbeInfoSize_ECC_aligned = ALIGN_8(sbeInfoSize_ECC);
-
-        // Create data buffer of larger size
-        // NOTE:  EEPROM read will fill in smaller, unaligned size
+        // Set these variables to the read out the max struct size
+        // Supported version 1 is a subset of supported version 2
+        size_t sbeInfoSize = sizeof(sbeSeepromVersionInfo_t);
+        size_t sbeInfoSize_ECC = (sbeInfoSize*9)/8;
         uint8_t * tmp_data_ECC = static_cast<uint8_t*>(
-        malloc(sbeInfoSize_ECC_aligned));
+                                        malloc(sbeInfoSize_ECC));
 
-        do{
 
-            /*******************************************/
-            /*  Read SBE Version SBE Version Information       */
-            /*******************************************/
+        do{
 
+            /***********************************************/
+            /*  Read SBE Version SBE Version Information   */
+            /***********************************************/
             // Clear Buffer
-            memset( tmp_data_ECC, 0, sbeInfoSize_ECC_aligned );
+            memset( tmp_data_ECC, 0, sbeInfoSize_ECC );
 
             //Read SBE Versions
             err = deviceRead( i_target,
@@ -1568,43 +1625,68 @@ namespace SBE
             }
 
             TRACDBIN(g_trac_sbe,
-                     "getSeepromSideVersion()- tmp_data_ECC (not-aligned)",
+                     "getSeepromSideVersion()- tmp_data_ECC",
                      tmp_data_ECC,
                      sbeInfoSize_ECC);
 
-            TRACDBIN(g_trac_sbe,
-                     "getSeepromSideVersion()- tmp_data_ECC (aligned)",
-                     tmp_data_ECC,
-                     sbeInfoSize_ECC_aligned);
-
 
             // Clear destination
             memset( &o_info, 0, sizeof(o_info) );
 
 
+
+            // Initially only look at the first 8-Bytes which should include
+            // the struct version value
             // Remove ECC
             eccStatus = PNOR::ECC::removeECC(
                                          tmp_data_ECC,
                                          reinterpret_cast<uint8_t*>(&o_info),
-                                         sizeof(o_info));
+                                         8);
+
+            TRACUCOMP( g_trac_sbe, "getSeepromSideVersion(): First 8-Bytes: "
+                       "eccStatus=%d, version=0x%X, data_crc=0x%X",
+                       eccStatus, o_info.struct_version, o_info.data_crc);
+
+
+            if ( ( o_info.struct_version == 1 ) ||
+                   o_info.struct_version == 2 )
+            {
+                // Supported Versions - set size variable to remove ECC
+                sbeInfoSize = SBE_SEEPROM_STRUCT_SIZES[o_info.struct_version];
+                sbeInfoSize_ECC = (sbeInfoSize*9)/8;
+
+            }
+            else
+            {
+                // Unsupported versions - ignoring any ECC errors
+                TRACFCOMP( g_trac_sbe, "getSeepromSideVersion(): Unsupported "
+                           "Struct Version=0x%X, ignoring any eccStatus=%d",
+                           o_info.struct_version, eccStatus);
+                break;
+            }
+
+
+            // Remove ECC for full SBE Version struct
+            eccStatus = PNOR::ECC::CLEAN;
+            eccStatus = PNOR::ECC::removeECC(
+                                         tmp_data_ECC,
+                                         reinterpret_cast<uint8_t*>(&o_info),
+                                         sbeInfoSize);
 
             TRACUCOMP( g_trac_sbe, "getSeepromSideVersion(): eccStatus=%d, "
-                       "sizeof o_info=%d, sI_ECC=%d, sI_ECC_aligned=%d",
-                       eccStatus, sizeof(o_info), sbeInfoSize_ECC,
-                       sbeInfoSize_ECC_aligned);
+                       "sizeof o_info/sI=%d, sI_ECC=%d",
+                       eccStatus, sbeInfoSize, sbeInfoSize_ECC);
 
             // Handle Uncorrectable ECC - no error log:
             // clear data and set o_seeprom_ver_ECC_fail=true
-            // -- unless SIM version found:  than just ignore
-            if ( (eccStatus == PNOR::ECC::UNCORRECTABLE) &&
-                 (o_info.struct_version != SBE_SEEPROM_STRUCT_SIMICS_VERSION) )
+            if ( eccStatus == PNOR::ECC::UNCORRECTABLE )
             {
 
                 TRACFCOMP( g_trac_sbe,ERR_MRK"getSeepromSideVersion() - ECC "
                            "ERROR: Handled. eccStatus=%d, side=%d, sizeof "
-                           "o_info=%d, sI_ECC=%d, sI_ECC_aligned=%d",
-                           eccStatus, i_seepromSide, sizeof(o_info),
-                           sbeInfoSize_ECC, sbeInfoSize_ECC_aligned);
+                           "o_info/sI=%d, sI_ECC=%d",
+                           eccStatus, i_seepromSide, sbeInfoSize,
+                           sbeInfoSize_ECC);
 
                 memset( &o_info, 0, sizeof(o_info));
                 o_seeprom_ver_ECC_fail = true;
@@ -2065,17 +2147,21 @@ namespace SBE
                 isSimics_check = true;
             }
 
-            if ( (pnor_check_dirty || crc_check_dirty )
+            if ( ( pnor_check_dirty ||
+                   crc_check_dirty  ||
+                   io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch )
                  && !isSimics_check )
             {
                 seeprom_0_isDirty = true;
                 TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: Seeprom0 "
                            "dirty: pnor=%d, crc=%d (custom=0x%X/s0=0x%X), "
-                           "isSimics=%d",
+                           "nest_freq=%d, isSimics=%d",
                            TARGETING::get_huid(io_sbeState.target),
                            pnor_check_dirty, crc_check_dirty,
                            io_sbeState.customizedImage_crc,
-                           io_sbeState.seeprom_0_ver.data_crc, isSimics_check);
+                           io_sbeState.seeprom_0_ver.data_crc,
+                           io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch,
+                           isSimics_check);
             }
 
             /**************************************************************/
@@ -2111,17 +2197,21 @@ namespace SBE
                 isSimics_check = true;
             }
 
-            if ( (pnor_check_dirty || crc_check_dirty )
+            if ( (pnor_check_dirty ||
+                  crc_check_dirty  ||
+                  io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch )
                  && !isSimics_check )
             {
                 seeprom_1_isDirty = true;
                 TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: Seeprom1 "
                            "dirty: pnor=%d, crc=%d (custom=0x%X/s1=0x%X), "
-                           "isSimics=%d",
+                           "nest_freq=%d, isSimics=%d",
                            TARGETING::get_huid(io_sbeState.target),
                            pnor_check_dirty, crc_check_dirty,
                            io_sbeState.customizedImage_crc,
-                           io_sbeState.seeprom_1_ver.data_crc, isSimics_check);
+                           io_sbeState.seeprom_1_ver.data_crc,
+                           io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch,
+                           isSimics_check);
             }
 
 
@@ -2158,11 +2248,15 @@ namespace SBE
             {
                 current_side_isDirty = seeprom_0_isDirty;
                 alt_side_isDirty     = seeprom_1_isDirty;
+                io_sbeState.cur_seeprom_ver_Nest_Freq_Mismatch =
+                            io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch;
             }
             else
             {
                 current_side_isDirty = seeprom_1_isDirty;
                 alt_side_isDirty     = seeprom_0_isDirty;
+                io_sbeState.cur_seeprom_ver_Nest_Freq_Mismatch =
+                            io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch;
             }
 
             // Set system_situation - bits defined in sbe_update.H
@@ -2204,7 +2298,8 @@ namespace SBE
             /**************************************************************/
             /*  Setup new SBE Image Version Info, if necessary            */
             /**************************************************************/
-            if ( io_sbeState.update_actions & UPDATE_SBE )
+            if ( ( io_sbeState.update_actions & UPDATE_SBE ) ||
+                 ( io_sbeState.update_actions & UPDATE_NEST_FREQ ) )
             {
                 memset(&(io_sbeState.new_seeprom_ver),
                        0x0,
@@ -2222,6 +2317,19 @@ namespace SBE
                         &(io_sbeState.customizedImage_crc),
                         sizeof(io_sbeState.new_seeprom_ver.data_crc));
 
+                if (  io_sbeState.update_actions & UPDATE_SBE )
+                {
+                    io_sbeState.new_seeprom_ver.nest_freq_mhz =
+                                g_current_nest_freq;
+                }
+                else
+                {
+                    // UPDATE_NEST_FREQ: set the nest freq to what the
+                    // current SBE Seeprom booted from
+                     io_sbeState.new_seeprom_ver.nest_freq_mhz =
+                                 io_sbeState.mproc_nest_freq_mhz;
+                }
+
                 // If there was an ECC fail on either SEEPROM, do a read-back
                 // Check when writing this information to the SEEPROM
                 io_sbeState.new_readBack_check = (
@@ -2299,7 +2407,6 @@ namespace SBE
                 // The 2 SBE SEEPROMs are independent of each other
                 // Determine if PNOR is 1- or 2-sided and if the current
                 // Seeprom is pointing at PNOR's GOLDEN side
-
                 PNOR::SideId tmp_side = PNOR::WORKING;
                 PNOR::SideInfo_t pnor_side_info;
                 err = PNOR::getSideInfo (tmp_side, pnor_side_info);
@@ -2322,10 +2429,30 @@ namespace SBE
 
                 if ( pnor_side_info.isGolden == true )
                 {
-                    // If true, nothing to do (covered in istep 6 function)
-                    l_actions = CLEAR_ACTIONS;
+                    // Check for NEST_FREQ mismatch
+                    if ( ( io_sbeState.target_is_master == true ) &&
+                         ( io_sbeState.cur_seeprom_ver_Nest_Freq_Mismatch
+                                       == true ) )
+                    {
+                        l_actions |= DO_UPDATE;
+                        l_actions |= UPDATE_NEST_FREQ;
 
-                    TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                            "Booting Master Proc READ_ONLY SEEPROM pointing at "
+                            "PNOR's GOLDEN side and NEST_FREQ mismatch. Update "
+                            "NEST_FREQ. Continue IPL. "
+                            "(sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
+                            TARGETING::get_huid(io_sbeState.target),
+                            i_system_situation, l_actions,
+                            io_sbeState.mvpdSbKeyword.flags);
+                    }
+
+                    else
+                    {
+                        // Nothing to do (covered in istep 6 function)
+                        l_actions = CLEAR_ACTIONS;
+
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
                             "Booting READ_ONLY SEEPROM pointing at PNOR's "
                             "GOLDEN side. No updates for cur side=%d. Continue "
                             "IPL. (sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
@@ -2333,19 +2460,38 @@ namespace SBE
                             io_sbeState.cur_seeprom_side,
                             i_system_situation, l_actions,
                             io_sbeState.mvpdSbKeyword.flags);
-                    break;
+                    }
                 }
-
                 else if (  ( pnor_side_info.hasOtherSide == false ) &&
                          ( io_sbeState.cur_seeprom_side == READ_ONLY_SEEPROM ) )
                 {
-                    // Even though current seeprom is not pointing at PNOR's
-                    // GOLDEN side, treat like READ_ONLY if booting from
-                    // READ_ONLY seeprom and and PNOR does not have another side
-                    // - No Update (ie, Palmetto configuration)
-                    l_actions = CLEAR_ACTIONS;
+                    // Check for NEST_FREQ mismatch
+                    if ( ( io_sbeState.target_is_master == true ) &&
+                         ( io_sbeState.cur_seeprom_ver_Nest_Freq_Mismatch
+                                       == true ) )
+                    {
+                        l_actions |= DO_UPDATE;
+                        l_actions |= UPDATE_NEST_FREQ;
 
-                    TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                            "Treating cur of Master Proc like READ_ONLY SBE "
+                            "SEEPROM and NEST_FREQ mismatch. Update "
+                            "NEST_FREQ. Continue IPL. "
+                            "(sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
+                            TARGETING::get_huid(io_sbeState.target),
+                            i_system_situation, l_actions,
+                            io_sbeState.mvpdSbKeyword.flags);
+                    }
+                    else
+                    {
+
+                        // Even though current seeprom is not pointing at PNOR's
+                        // GOLDEN side, treat like READ_ONLY if booting from
+                        // READ_ONLY seeprom and PNOR does not have another side
+                        // - No Update (ie, Palmetto configuration)
+                        l_actions = CLEAR_ACTIONS;
+
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
                                "Treating cur like READ_ONLY SBE SEEPROM. "
                                "No updates for cur side=%d. Continue IPL. "
                                "(sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
@@ -2353,7 +2499,7 @@ namespace SBE
                                io_sbeState.cur_seeprom_side,
                                i_system_situation, l_actions,
                                io_sbeState.mvpdSbKeyword.flags);
-                    break;
+                    }
                 }
                 else // proceed to update this side
                 {
@@ -2363,44 +2509,43 @@ namespace SBE
                                " on cur side=%d ",
                                TARGETING::get_huid(io_sbeState.target),
                                io_sbeState.cur_seeprom_side)
-                }
-
 
-                // Check for clean vs. dirty only on cur side
-                if ( i_system_situation & SITUATION_CUR_IS_DIRTY )
-                {
-                    //  Update cur side and re-ipl
-                    l_actions |= IPL_RESTART;
-                    l_actions |= DO_UPDATE;
-                    l_actions |= UPDATE_SBE;
-                    //even though flags byte not updated
-                    l_actions |= UPDATE_MVPD;
+                    // Check for clean vs. dirty only on cur side
+                    if ( i_system_situation & SITUATION_CUR_IS_DIRTY )
+                    {
+                        //  Update cur side and re-ipl
+                        l_actions |= IPL_RESTART;
+                        l_actions |= DO_UPDATE;
+                        l_actions |= UPDATE_SBE;
+                        //even though flags byte not updated
+                        l_actions |= UPDATE_MVPD;
 
-                    // Set Update side to cur
-                    io_sbeState.seeprom_side_to_update =
+                        // Set Update side to cur
+                        io_sbeState.seeprom_side_to_update =
                                     ( io_sbeState.cur_seeprom_side ==
                                                   SBE_SEEPROM0 )
                                      ? EEPROM::SBE_PRIMARY : EEPROM::SBE_BACKUP;
 
-                    TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
-                               "cur side (%d) dirty. Update cur. Re-IPL. "
-                               "(sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
-                               TARGETING::get_huid(io_sbeState.target),
-                               io_sbeState.cur_seeprom_side,
-                               i_system_situation, l_actions,
-                               io_sbeState.mvpdSbKeyword.flags);
-                }
-                else
-                {
-                    // Cur side clean - No Updates - Continue IPL
-                    l_actions = CLEAR_ACTIONS;
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                                   "cur side (%d) dirty. Update cur. Re-IPL. "
+                                   "(sit=0x%.2X, act=0x%.8X flags=0x%.2X)",
+                                   TARGETING::get_huid(io_sbeState.target),
+                                   io_sbeState.cur_seeprom_side,
+                                   i_system_situation, l_actions,
+                                   io_sbeState.mvpdSbKeyword.flags);
+                    }
+                    else
+                    {
+                        // Cur side clean - No Updates - Continue IPL
+                        l_actions = CLEAR_ACTIONS;
 
-                    TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
-                               "cur side (%d) clean-no updates. "
-                               "Continue IPL. (sit=0x%.2X, act=0x%.8X)",
-                               TARGETING::get_huid(io_sbeState.target),
-                               io_sbeState.cur_seeprom_side,
-                               i_system_situation, l_actions);
+                        TRACFCOMP( g_trac_sbe, INFO_MRK"SBE Update tgt=0x%X: "
+                                   "cur side (%d) clean-no updates. "
+                                   "Continue IPL. (sit=0x%.2X, act=0x%.8X)",
+                                   TARGETING::get_huid(io_sbeState.target),
+                                   io_sbeState.cur_seeprom_side,
+                                   i_system_situation, l_actions);
+                    }
                 }
             }
 #elif CONFIG_SBE_UPDATE_SIMULTANEOUS
@@ -2835,6 +2980,32 @@ namespace SBE
         do{
 
             /**************************************************************/
+            /*  Update NEST_FREQ, if necessary                            */
+            /**************************************************************/
+#ifdef CONFIG_SBE_UPDATE_INDEPENDENT
+            // This can only be set with Golden/READ-ONLY Seeprom situation
+            if (l_actions & UPDATE_NEST_FREQ)
+            {
+                // Call targeting function to update NEST_FREQ
+                TargetService& tS = targetService();
+                TARGETING::Target* sys = NULL;
+                (void) tS.getTopLevelTarget( sys );
+                assert(sys, "performUpdateActions() system target is NULL");
+
+                TRACFCOMP( g_trac_sbe, "performUpdateActions(): "
+                           "UPDATE_NEST_FREQ to %d ",
+                           io_sbeState.mproc_nest_freq_mhz);
+
+                TARGETING::setFrequencyAttributes(
+                                       sys,
+                                       io_sbeState.mproc_nest_freq_mhz);
+
+                // This opeation only done by itself and does not need
+                // an informational error log
+                break;
+            }
+#endif
+            /**************************************************************/
             /*  Update SEEPROM, if necessary                              */
             /**************************************************************/
             if (l_actions & UPDATE_SBE)
@@ -3806,4 +3977,195 @@ namespace SBE
     }
 
 
+
+/////////////////////////////////////////////////////////////////////
+    void checkSeepromNestFreq(TARGETING::Target* i_tgt,
+                              uint32_t i_default_nest_freq,
+                              uint32_t i_struct_version,
+                              uint32_t i_seeprom_nest_freq,
+                              size_t   i_seeprom_num,
+                              bool &   o_mismatch)
+    {
+        TRACUCOMP( g_trac_sbe,
+                   ENTER_MRK"checkSeepromNestFreq: tgt=0x%X current_freq=%d, "
+                   "default_freq=%d, version=0x%X, i_seeprom_nest_freq=%d, "
+                   "seeprom_num=%d",
+                   TARGETING::get_huid(i_tgt), g_current_nest_freq,
+                   i_default_nest_freq, i_struct_version,
+                   i_seeprom_nest_freq, i_seeprom_num);
+
+        o_mismatch = false;
+
+        // Check Seeprom
+        if ( i_struct_version == 2 )
+        {
+            // Only version that tracks the nest freq when the image was
+            // customized
+            if ( g_current_nest_freq == i_seeprom_nest_freq )
+            {
+                TRACUCOMP( g_trac_sbe,"checkSeepromNestFreq: tgt=0x%X: "
+                           "Seeprom%d: ver%d found and current "
+                           "nest_freq(%d) and image nest_freq(%d) match",
+                           TARGETING::get_huid(i_tgt),
+                           i_seeprom_num, i_struct_version,
+                           g_current_nest_freq,
+                           i_seeprom_nest_freq);
+            }
+            else
+            {
+                o_mismatch = true;
+                TRACFCOMP( g_trac_sbe,"checkSeepromNestFreq: tgt=0x%X: "
+                           "Seeprom%d: ver%d found and current "
+                           "nest_freq(%d) and image nest_freq(%d) DO NOT match",
+                           TARGETING::get_huid(i_tgt),
+                           i_seeprom_num, i_struct_version,
+                           g_current_nest_freq, i_seeprom_nest_freq);
+            }
+        }
+
+        else
+        {
+            // Either old version (like 1), unitialized, simics, corrupted, etc
+            // Assume SBE image created with the module's default frequency
+            if ( g_current_nest_freq == i_default_nest_freq )
+            {
+                TRACUCOMP( g_trac_sbe,"checkSeepromNestFreq: tgt=0x%X: "
+                           "Seeprom%d: ver=0x%X found and current "
+                           "nest_freq(%d) and default nest_freq(%d) match",
+                           TARGETING::get_huid(i_tgt),
+                           i_seeprom_num, i_struct_version,
+                           g_current_nest_freq, i_default_nest_freq);
+            }
+            else
+            {
+                o_mismatch = true;
+                TRACFCOMP( g_trac_sbe,"checkSeepromNestFreq: tgt=0x%X: "
+                           "Seeprom%d: ver=0x%X found and current "
+                           "nest_freq(%d) and default nest_freq(%d) "
+                           "DO NOT match. ",
+                           TARGETING::get_huid(i_tgt),
+                           i_seeprom_num, i_struct_version,
+                           g_current_nest_freq, i_default_nest_freq);
+            }
+
+        }
+
+        TRACUCOMP( g_trac_sbe,
+                   EXIT_MRK"checkSeepromNestFreq: tgt=0x%X "
+                   "Seeprom%d: return o_mismatch=%d",
+                   TARGETING::get_huid(i_tgt), i_seeprom_num, o_mismatch);
+
+        return;
+    }
+
+
+/////////////////////////////////////////////////////////////////////
+    errlHndl_t checkNestFreqSettings(sbeTargetState_t& io_sbeState)
+    {
+        TRACDCOMP( g_trac_sbe,
+                   ENTER_MRK"checkNestFreqSettings");
+
+        errlHndl_t err = NULL;
+
+        uint32_t default_nest_freq = 0;
+
+        do{
+
+            // Set defaults
+            io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch = false;
+            io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch = false;
+
+            // Get DEFAULT_PROC_MODULE_NEST_FREQ_MHZ attribute
+            default_nest_freq = io_sbeState.target->getAttr<
+                         TARGETING::ATTR_DEFAULT_PROC_MODULE_NEST_FREQ_MHZ>();
+
+            TRACUCOMP( g_trac_sbe,"checkNestFreqSettings(): ATTR_NEST_FREQ_MHZ "
+                       "=%d, ATTR_DEFAULT_PROC_MODULE_NEST_FREQ_MHZ=%d",
+                       g_current_nest_freq, default_nest_freq);
+
+            // Check Seeprom 0
+            checkSeepromNestFreq(io_sbeState.target,
+                                 default_nest_freq,
+                                 io_sbeState.seeprom_0_ver.struct_version,
+                                 io_sbeState.seeprom_0_ver.nest_freq_mhz,
+                                 0,
+                                 io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch);
+
+            // Check Seeprom 1
+            checkSeepromNestFreq(io_sbeState.target,
+                                 default_nest_freq,
+                                 io_sbeState.seeprom_1_ver.struct_version,
+                                 io_sbeState.seeprom_1_ver.nest_freq_mhz,
+                                 1,
+                                 io_sbeState.seeprom_1_ver_Nest_Freq_Mismatch);
+
+            // Set the frequency at which the master processor booted from
+            if ( io_sbeState.target_is_master == true )
+            {
+                //Get Current (boot) Side
+                sbeSeepromSide_t tmp_cur_side = SBE_SEEPROM_INVALID;
+                err = getSbeBootSeeprom(io_sbeState.target, tmp_cur_side);
+                if(err)
+                {
+                    TRACFCOMP( g_trac_sbe, ERR_MRK"checkNestFreqSettings() - "
+                               "Error returned from getSbeBootSeeprom()");
+
+                    // Assume it was default frequency for this module
+                    io_sbeState.mproc_nest_freq_mhz = default_nest_freq;
+
+                    break;
+                }
+
+                if (tmp_cur_side == SBE_SEEPROM0)
+                {
+                    if ( io_sbeState.seeprom_0_ver.struct_version == 2 )
+                    {
+                        io_sbeState.mproc_nest_freq_mhz =
+                                    io_sbeState.seeprom_0_ver.nest_freq_mhz;
+                    }
+                    else
+                    {
+                        // Assume it was default frequency for this module
+                        io_sbeState.mproc_nest_freq_mhz = default_nest_freq;
+                    }
+                }
+                else if ( io_sbeState.cur_seeprom_side == SBE_SEEPROM1)
+                {
+                    if ( io_sbeState.seeprom_1_ver.struct_version == 2 )
+                    {
+                        io_sbeState.mproc_nest_freq_mhz =
+                                    io_sbeState.seeprom_1_ver.nest_freq_mhz;
+                    }
+                    else
+                    {
+                        // Assume it was default frequency for this module
+                        io_sbeState.mproc_nest_freq_mhz = default_nest_freq;
+                    }
+                }
+                else
+                {
+                    // Assume it was default frequency for this module
+                    io_sbeState.mproc_nest_freq_mhz = default_nest_freq;
+                }
+
+            }
+
+            TRACUCOMP( g_trac_sbe,"checkNestFreqSettings(): s0-mismatch=%d, "
+                       "s1-mismatch=%d, mproc_nest_freq_mhz=%d",
+                       io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch,
+                       io_sbeState.seeprom_0_ver_Nest_Freq_Mismatch,
+                       io_sbeState.mproc_nest_freq_mhz);
+
+        }while(0);
+
+
+        TRACDCOMP( g_trac_sbe,
+                   EXIT_MRK"checkNestFreqSettings");
+
+        return err;
+
+    }
+
+
+
 } //end SBE Namespace
diff --git a/src/usr/sbe/sbe_update.H b/src/usr/sbe/sbe_update.H
index 1d4b2083e..f13e9b1c2 100644
--- a/src/usr/sbe/sbe_update.H
+++ b/src/usr/sbe/sbe_update.H
@@ -44,9 +44,21 @@ namespace SBE
     const size_t   SBE_MVPD_SHORT_IMAGE_VERSION_SIZE = 20;
 
     // Version of Struct stored in SEEPROM
-    const uint32_t SBE_SEEPROM_STRUCT_VERSION        = 0x00000001;
+    const uint32_t SBE_SEEPROM_STRUCT_VERSION        = 0x00000002;
     const uint32_t SBE_SEEPROM_STRUCT_SIMICS_VERSION = 0x5A5A5A5A;
 
+    // Number of versions supported
+    const uint8_t SBE_SEEPROM_STRUCT_MAX_VERSIONS    = 0x03;
+
+    // Size of supported versions - must be 8-byte aligned
+    const size_t  SBE_SEEPROM_STRUCT_SIZES[SBE_SEEPROM_STRUCT_MAX_VERSIONS] =
+                      {
+                        0,   // ver0: uninitialized - no size
+                        72,  // ver1: size of struct is 72 bytes
+                        80,  // ver2: size of struct is 80 bytes
+                      };
+
+
     // Constant written to SBE SEEPROM version struct to invalidate the
     // struct and the image - 'INVALID\0'
     const uint64_t SBE_SEEPROM_STRUCT_INVALID = 0x494E56414C494400;
@@ -126,6 +138,7 @@ namespace SBE
         MVPD_UPDATE_COMPLETE   = 0x00000008,
         UPDATE_SBE             = 0x00000010,
         SBE_UPDATE_COMPLETE    = 0x00000020,
+        UPDATE_NEST_FREQ       = 0x00000100,
         UNSUPPORTED_SITUATION  = 0x80000000,
     };
 
@@ -138,18 +151,25 @@ namespace SBE
      *
      * NOTE: For ECC purposes, this must be 8-byte aligned,
      *       so pad data if necessary
-     *       struct_version 1: size = 4+64+4 = 72 (aligned)
+     *       struct_version 1: size = 4+4+64 = 72 (aligned)
+     *       struct_version 2: size = 4+4+64+4+4 = 80 (aligned)
      */
     struct sbeSeepromVersionInfo_t
     {
+        // The first 64-bits will be read out to check for struct_version
         uint32_t  struct_version;
         uint32_t  data_crc;
         uint8_t   image_version[SBE_IMAGE_VERSION_SIZE];
+
+        // New parameters for version 2: nest_freq_mhz and uin32_t/reserved
+        uint32_t  nest_freq_mhz;
+        uint32_t  reserved;      // reserved; added for alignment
     } PACKED;
 
     // This line forces a compile fail if struct is NOT 8-byte-alaigned
     CPPASSERT(0 == (sizeof(sbeSeepromVersionInfo_t) % 8));
 
+
     /**
      * @brief Struct of individual SBE entry in SBE and SBEC
      *        Table of Contents in PNOR partitions
@@ -208,6 +228,11 @@ namespace SBE
         bool                     seeprom_0_ver_ECC_fail;
         bool                     seeprom_1_ver_ECC_fail;
 
+        bool                     seeprom_0_ver_Nest_Freq_Mismatch;
+        bool                     seeprom_1_ver_Nest_Freq_Mismatch;
+        bool                     cur_seeprom_ver_Nest_Freq_Mismatch;
+        uint32_t                 mproc_nest_freq_mhz;
+
         sbeSeepromSide_t         cur_seeprom_side; // aka 'booted' side
         sbeSeepromSide_t         alt_seeprom_side;
         sbeSeepromSide_t         permanent_seeprom_side;
@@ -231,6 +256,10 @@ namespace SBE
         sbeTargetState_t() :
           target(NULL), target_is_master(false), ec(0x0),
           seeprom_0_ver_ECC_fail(false), seeprom_1_ver_ECC_fail(false),
+          seeprom_0_ver_Nest_Freq_Mismatch(false),
+          seeprom_1_ver_Nest_Freq_Mismatch(false),
+          cur_seeprom_ver_Nest_Freq_Mismatch(false),
+          mproc_nest_freq_mhz(0x0),
           customizedImage_size(0x0), customizedImage_crc(0x0),
           new_readBack_check(false),
           err_plid(0x0), err_eid(0x0), err_rc(0x0)
@@ -248,9 +277,13 @@ namespace SBE
      *
      * @param[io/out] io_sbeState   Struct containing SBE State of the target
      *
+     * @param[io/out] i_check_type  Determines if an early check should be run
+     *                              before collecting all of the information.
+     *
      * @return errlHndl_t    Error log handle on failure.
      */
-    errlHndl_t getSbeInfoState(sbeTargetState_t& io_sbeState);
+    errlHndl_t getSbeInfoState(sbeTargetState_t& io_sbeState,
+                               sbeUpdateCheckType& i_check_type);
 
     /**
      * @brief Analyze and Determine Update Actions for a specific target
@@ -501,5 +534,23 @@ namespace SBE
                          size_t i_maxBits);
 
 
+    /**
+     * @brief Checks the Nest Frequency value stored in the the version struct
+     *        and compares it ot the NEST_FREQ_MHZ attribute of the system
+     *
+     * @param[io/out] io_sbeState   Struct containing SBE State of the target
+     *                              and is updated based on the situation
+     *
+     * @pre   seeprom_0_ver and seeprom_1_ver have been filled in
+     *
+     * @post  seeprom_0_ver_Nest_Freq_Mismatch,
+     *        seeprom_1_ver_Nest_Freq_Mismatch, and nest_freq_check_complete
+     *        are set.
+     *
+     * @return errlHndl_t    Error log handle on failure.
+     */
+    errlHndl_t checkNestFreqSettings(sbeTargetState_t& io_sbeState);
+
+
 } //end namespace SBE
 #endif
diff --git a/src/usr/sbe/test/sbeupdatetest.H b/src/usr/sbe/test/sbeupdatetest.H
index c5a3dd56e..bbdeb1e43 100644
--- a/src/usr/sbe/test/sbeupdatetest.H
+++ b/src/usr/sbe/test/sbeupdatetest.H
@@ -444,9 +444,11 @@ class SBEUpdateTest: public CxxTest::TestSuite
             // set bad ec just for comparison to local_ec later
             sbeState.ec = 0xFF;
 
+            // send input part to perform all checks
+            sbeUpdateCheckType i_check_type = SBE_UPDATE_CHECK_ALL;
 
             total++;
-            err = getSbeInfoState(sbeState);
+            err = getSbeInfoState(sbeState, i_check_type);
             if(err)
             {
                 fails++;
diff --git a/src/usr/targeting/common/genHwsvMrwXml.pl b/src/usr/targeting/common/genHwsvMrwXml.pl
index a720c4441..18746cc2c 100755
--- a/src/usr/targeting/common/genHwsvMrwXml.pl
+++ b/src/usr/targeting/common/genHwsvMrwXml.pl
@@ -2352,6 +2352,25 @@ sub generate_sys
 ";
     }
 
+    # Tuletas can now support multiple nest frequencies
+    if ($sysname =~ /tuleta/)
+    {
+        print "
+    <attribute><id>MRW_NEST_CAPABLE_FREQUENCIES_SYS</id>
+        <default>2000_MHZ_OR_2400_MHZ</default>
+    </attribute>
+";
+    }
+    else
+    {
+        print "
+    <attribute><id>MRW_NEST_CAPABLE_FREQUENCIES_SYS</id>
+        <default>UNSUPPORTED_FREQ</default>
+    </attribute>
+";
+    }
+
+
     if( $haveFSPs == 0 )
     {
         generate_apss_adc_config()
diff --git a/src/usr/targeting/common/xmltohb/attribute_types.xml b/src/usr/targeting/common/xmltohb/attribute_types.xml
index 56d1dedda..49a3a3471 100644
--- a/src/usr/targeting/common/xmltohb/attribute_types.xml
+++ b/src/usr/targeting/common/xmltohb/attribute_types.xml
@@ -16631,5 +16631,23 @@ firmware notes: Platforms should initialize this attribute to AUTO (0)</descript
         <macro>DIRECT</macro>
     </hwpfToHbAttrMap>
 </attribute>
+<attribute>
+    <id>DEFAULT_PROC_MODULE_NEST_FREQ_MHZ</id>
+    <description>
+        Default Nest frequency in MHz for Processor Modules
+        Default to 2000 MHz for Murano-based Modules
+        Default to 2400 MHz for Venice- and Naples-based Modules
+    </description>
+    <simpleType>
+        <uint32_t>
+            <default>2000</default>
+        </uint32_t>
+    </simpleType>
+    <persistency>non-volatile</persistency>
+    <readable/>
+</attribute>
+
+
+
 
 </attributes>
diff --git a/src/usr/targeting/common/xmltohb/target_types.xml b/src/usr/targeting/common/xmltohb/target_types.xml
index f091d58dc..b9a1dcb81 100644
--- a/src/usr/targeting/common/xmltohb/target_types.xml
+++ b/src/usr/targeting/common/xmltohb/target_types.xml
@@ -668,6 +668,10 @@
         <id>PROC_PCIE_REFCLOCK_ENABLE</id>
         <default>0xE0</default>
     </attribute>
+    <attribute>
+        <id>DEFAULT_PROC_MODULE_NEST_FREQ_MHZ</id>
+        <default>2400</default>
+    </attribute>
 </targetType>
 
 <targetType>
@@ -693,6 +697,10 @@
         <id>PROC_PCIE_REFCLOCK_ENABLE</id>
         <default>0xE0</default>
     </attribute>
+    <attribute>
+        <id>DEFAULT_PROC_MODULE_NEST_FREQ_MHZ</id>
+        <default>2000</default>
+    </attribute>
 </targetType>
 
 <targetType>
@@ -718,6 +726,10 @@
         <id>PROC_PCIE_REFCLOCK_ENABLE</id>
         <default>0xF0</default>
     </attribute>
+    <attribute>
+        <id>DEFAULT_PROC_MODULE_NEST_FREQ_MHZ</id>
+        <default>2400</default>
+    </attribute>
 </targetType>
 
 <targetType>