cv64a6_rt_config: adopt HPDCache and tune parameters

Author: ricted98

core/include/cv64a6_rt_config_pkg.sv

@@ -25,7 +25,7 @@ package cva6_config_pkg;
   localparam CVA6ConfigZcmpExtEn = 0;
   localparam CVA6ConfigAExtEn = 1;
   localparam CVA6ConfigHExtEn = 1;
-  localparam CVA6ConfigBExtEn = 0;
+  localparam CVA6ConfigBExtEn = 1;
   localparam CVA6ConfigVExtEn = 0;
   localparam CVA6ConfigRVZiCond = 1;
   localparam CVA6ConfigSclicExtEn = 1;
@@ -49,20 +49,23 @@ package cva6_config_pkg;
   localparam CVA6ConfigICacheSpmAddrBase = 56'h01A0_0000;
   localparam CVA6ConfigDCacheSpmAddrBase = 56'h0180_0000;
 
-  localparam CVA6ConfigDcacheFlushOnFence = 1'b1;
+  // do not flush Dcache for EVERY fence - dramatic performance impact
+  // use RVZiCbom to synchronize caches with DMA devices instead
+  // CAUTION - a configuration with CVA6ConfigDcacheFlushOnFence might be required for different SoCs, e.g., cache-coherent SMP configurations
+  localparam CVA6ConfigDcacheFlushOnFence = 1'b0;
   localparam CVA6ConfigDcacheFlushOnFenceI = 1'b1;
   localparam CVA6ConfigDcacheInvalidateOnFlush = 1'b0;
 
-  localparam CVA6ConfigDcacheIdWidth = 1; // Must be >= $clog2(CVA6Cfg.NrLoadBufEntries)
+  localparam CVA6ConfigDcacheIdWidth = 3;
   localparam CVA6ConfigMemTidWidth = CVA6ConfigAxiIdWidth;
 
-  localparam CVA6ConfigWtDcacheWbufDepth = 8;
+  localparam CVA6ConfigWtDcacheWbufDepth = 7;
 
   localparam CVA6ConfigNrScoreboardEntries = 8;
 
   localparam CVA6ConfigNrLoadPipeRegs = 1;
   localparam CVA6ConfigNrStorePipeRegs = 0;
-  localparam CVA6ConfigNrLoadBufEntries = 2;
+  localparam CVA6ConfigNrLoadBufEntries = 8;
 
   localparam CVA6ConfigRASDepth = 2;
   localparam CVA6ConfigBTBEntries = 32;
@@ -74,7 +77,7 @@ package cva6_config_pkg;
 
   localparam CVA6ConfigPerfCounterEn = 1;
 
-  localparam config_pkg::cache_type_t CVA6ConfigDcacheType = config_pkg::WB;
+  localparam config_pkg::cache_type_t CVA6ConfigDcacheType = config_pkg::HPDCACHE_WB;
 
   localparam CVA6ConfigMmuPresent = 1;
 
@@ -102,7 +105,7 @@ package cva6_config_pkg;
       XF8: bit'(CVA6ConfigF8En),
       RVA: bit'(CVA6ConfigAExtEn),
       RVB: bit'(CVA6ConfigBExtEn),
-      ZKN: bit'(0),
+      ZKN: bit'(1),
       RVV: bit'(CVA6ConfigVExtEn),
       RVC: bit'(CVA6ConfigCExtEn),
       RVH: bit'(CVA6ConfigHExtEn),
@@ -169,9 +172,9 @@ package cva6_config_pkg;
       DcacheByteSize: unsigned'(CVA6ConfigDcacheByteSize),
       DcacheSetAssoc: unsigned'(CVA6ConfigDcacheSetAssoc),
       DcacheLineWidth: unsigned'(CVA6ConfigDcacheLineWidth),
-      DcacheFlushOnFence: unsigned'(CVA6ConfigDcacheFlushOnFence),
+      DcacheFlushOnFence: bit'(CVA6ConfigDcacheFlushOnFence),
       DcacheFlushOnFenceI: unsigned'(CVA6ConfigDcacheFlushOnFenceI),
-      DcacheInvalidateOnFlush: unsigned'(CVA6ConfigDcacheInvalidateOnFlush),
+      DcacheInvalidateOnFlush: bit'(CVA6ConfigDcacheInvalidateOnFlush),
       DataUserEn: unsigned'(CVA6ConfigDataUserEn),
       WtDcacheWbufDepth: int'(CVA6ConfigWtDcacheWbufDepth),
       FetchUserWidth: unsigned'(CVA6ConfigFetchUserWidth),