Function to set Nest Frequency based off DIMM memory capability

-Needed for 32x32GB DIMM support
-Finds max capable frequency of system and all present DIMMs
 and deconfigures any DIMM that cannot run at desired frequency
-If necessary, Sets Nest Freq and triggers SBE update

Change-Id: I9bba92f55f1b67ff4a15d79113f19d39272ec72d
RTC:122884
Depends-on:I1dca7196cd02a2704a238665b73b522c9e103936
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/17829
Tested-by: Jenkins Server
Tested-by: Jenkins OP Build CI
Tested-by: FSP CI Jenkins
Tested-by: Jenkins OP HW
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/usr/targeting/common/target.C b/src/usr/targeting/common/target.C
index 2248283c5..559fd4ef7 100644
--- a/src/usr/targeting/common/target.C
+++ b/src/usr/targeting/common/target.C
@@ -645,6 +645,53 @@ bool Target::uninstallWriteAttributeCallback()
     #undef TARG_FN
 }
 
+
+//******************************************************************************
+// setFrequencyAttributes
+//******************************************************************************
+void setFrequencyAttributes(Target * i_sys, uint32_t i_newNestFreq)
+{
+
+    // Calculate the new value for PIB_I2C_NEST_PLL using old freq attributes.
+    uint32_t l_oldPll = i_sys->getAttr<TARGETING::ATTR_PIB_I2C_NEST_PLL>();
+    uint32_t l_oldNestFreq = i_sys->getAttr<TARGETING::ATTR_NEST_FREQ_MHZ>();
+    uint32_t l_newPll = (i_newNestFreq * l_oldPll)/l_oldNestFreq;
+
+    //NEST_FREQ
+    i_sys->setAttr<TARGETING::ATTR_NEST_FREQ_MHZ>(i_newNestFreq);
+    TRACFCOMP(g_trac_targeting,
+            "ATTR_NEST_FREQ_MHZ getting set from %d to %d",
+            l_oldNestFreq,
+            i_newNestFreq );
+
+    //FREQ_X
+    uint32_t l_freqX = i_newNestFreq * 2;
+    i_sys->setAttr<TARGETING::ATTR_FREQ_X>(l_freqX);
+    TRACFCOMP(g_trac_targeting,
+            "ATTR_FREQ_X getting set to from %d to %d",
+            l_oldNestFreq*2,
+            l_freqX );
+
+    //FREQ_PB
+    uint32_t l_freqPb = i_newNestFreq;
+    i_sys->setAttr<TARGETING::ATTR_FREQ_PB>(l_freqPb);
+    TRACFCOMP(g_trac_targeting,
+            "ATTR_FREQ_PB getting set from %d to %d",
+            l_oldNestFreq,
+            l_freqPb );
+
+    //PIB_I2C_NEST_PLL
+    i_sys->setAttr<TARGETING::ATTR_PIB_I2C_NEST_PLL>(l_newPll);
+    TRACFCOMP(g_trac_targeting,
+            "ATTR_PIB_I2C_NEST_PLL getting set from %x to %x",
+            l_oldPll,
+            l_newPll);
+
+    return;
+}
+
+
+
 //******************************************************************************
 // Attribute Tanks
 //******************************************************************************