Move HBRT reserved memory off of NVDIMMs

On a NVDIMM system we need to make sure that we don't
use the NV memory for the HOMER (or other reserved
memory).  Depending on the specific memory layout
the NV memory could be placed at the top of memory
where we would normally land.

Change-Id: Ie4407c63a4944cc5be13d2573d06fbed09d6a11f
CQ: SW470564
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/86480
Reviewed-by: Ilya Smirnov <ismirno@us.ibm.com>
Reviewed-by: Corey V Swenson <cswenson@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: William G Hoffa <wghoffa@us.ibm.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/include/usr/isteps/nvdimm/nvdimmif.H b/src/include/usr/isteps/nvdimm/nvdimmif.H
index 4ddfcf970..e96bb17d4 100644
--- a/src/include/usr/isteps/nvdimm/nvdimmif.H
+++ b/src/include/usr/isteps/nvdimm/nvdimmif.H
@@ -42,6 +42,22 @@ namespace NVDIMM
  */
 void getNVDIMMs( std::list<EEPROM::EepromInfo_t>& o_info );
 
+/**
+ * @brief Check if given address is owned by nvdimms and return
+          a new address that isn't if it was
+ * @param[in] i_topAddr = High mainstore address (see get_top_homer_mem_addr)
+ * @return uint64_t - Highest address without a nvdimm
+ */
+uint64_t get_top_addr_with_no_nvdimms( uint64_t i_topAddr );
+
+// Make a very simple inline if we don't support NVDIMMs in this compile
+#ifndef CONFIG_NVDIMM
+inline uint64_t get_top_addr_with_no_nvdimms( uint64_t i_topAddr )
+{
+    return i_topAddr;
+};
+#endif
+
 };  // end namespace NVDIMM
 
 #endif  // end __NVDIMMIF_H