Add support for missing memory behind master proc

On a phyp based system, when we detect that memory is missing
behind master processor, we find a proc with memory and set
ATTR_PROC_MEM_TO_USE to its HRMOR. This commit adds this support
in hwas common code as HWSV will call this function, update SBE
mbox registers, and IPL the system.

Change-Id: I88a6cb69aa10147365c556f9cf31014066bd3d08
CQ:SW430015
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/59159
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>

2 files changed, 48 insertions, 8 deletions

diff --git a/src/include/usr/hwas/common/hwas.H b/src/include/usr/hwas/common/hwas.H
index 7289b8ecb..06304c29c 100644
--- a/src/include/usr/hwas/common/hwas.H
+++ b/src/include/usr/hwas/common/hwas.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -221,6 +221,44 @@ void calculateEffectiveEC();
  */
 errlHndl_t markDisabledMcas();
 
+
+/*
+ * @brief: This function calls check_for_missing_memory and set
+ *         ATTR_PROC_MEM_TO_USE to the processor that we should use
+ *         in case of missing memory behind master proc
+ *
+ * @note:  Only applicable for PHYP based system
+ *
+ * @param[in]: i_node: Node target to operate on
+ *
+ * @retval: error log handle
+ */
+errlHndl_t update_proc_mem_to_use (const TARGETING::Target* i_node);
+
+/*
+ * @brief: checks whether we are missing memory behind master proc
+ *
+ * If there is no memory behind the master proc, then we iterate
+ * through all the other procs and figure out a proc that has
+ * memory. We figure out the proc with memory and
+ * return that to the user as io_proc_mem_to_use. User can update
+ * ATTR_PROC_MEM_TO_USE as needed.
+ *
+ * @note:  Only applicable for PHYP based system
+ *
+ * @param[in]: i_node: Node target to operate on
+ * @param[in/out]: io_proc_mem_to_use: Value of ATTR_PROC_MEM_TO_USE
+ *                  the value is changed only if we find missing
+ *                  memory
+ * @param[out]: o_found_missing_mem: indicated whether we found missing
+ *                  memory behind master proc or not
+ * @retval error log handle
+ */
+errlHndl_t check_for_missing_memory (const TARGETING::Target* i_node,
+                                     uint8_t & io_proc_mem_to_use,
+                                     bool & o_found_missing_mem);
+
+
 };   // end namespace
 
 #endif
diff --git a/src/include/usr/hwas/common/hwas_reasoncodes.H b/src/include/usr/hwas/common/hwas_reasoncodes.H
index 94248a5d4..c81904c6d 100644
--- a/src/include/usr/hwas/common/hwas_reasoncodes.H
+++ b/src/include/usr/hwas/common/hwas_reasoncodes.H
@@ -29,13 +29,14 @@ namespace HWAS
 {
     enum HwasModuleID
     {
-        MOD_DECONFIG_GARD         = 0x01,
-        MOD_PROCESS_CALLOUT       = 0x02,
-        MOD_CHECK_MIN_HW          = 0x03,
-        MOD_DECONFIG_TARGETS_FROM_GARD = 0x04,
-        MOD_VALIDATE_EC_LEVELS    = 0x05,
-        MOD_RUNTIME_DECONFIG      = 0x06,
-        MOD_DISABLE_OBUS          = 0x07,
+        MOD_DECONFIG_GARD                 = 0x01,
+        MOD_PROCESS_CALLOUT               = 0x02,
+        MOD_CHECK_MIN_HW                  = 0x03,
+        MOD_DECONFIG_TARGETS_FROM_GARD    = 0x04,
+        MOD_VALIDATE_EC_LEVELS            = 0x05,
+        MOD_RUNTIME_DECONFIG              = 0x06,
+        MOD_DISABLE_OBUS                  = 0x07,
+        MOD_UPDATE_PROC_MEM_TO_USE        = 0x08,
     };
 
     enum HwasReasonCode
@@ -64,6 +65,7 @@ namespace HWAS
         RC_NOT_AT_RUNTIME                       = HWAS_COMP_ID | 0x12,
         RC_NULL_TARGET                          = HWAS_COMP_ID | 0x13,
         RC_ONLY_TWO_OBUS_SHOULD_BE_CONFIGURED   = HWAS_COMP_ID | 0x14,
+        RC_NO_UPDATE_WHEN_MEM_MISSING           = HWAS_COMP_ID | 0x15,
     };
 };