From 3fc0a74102a3c244eef529b9e75c810df8af00c1 Mon Sep 17 00:00:00 2001
From: Charles Papon <charles.papon.90@gmail.com>
Date: Fri, 11 Oct 2019 00:22:44 +0200
Subject: [PATCH] Add Keep attribut on dBusCached
 relaxedMemoryTranslationRegister feature

---
 src/main/scala/vexriscv/plugin/DBusCachedPlugin.scala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/scala/vexriscv/plugin/DBusCachedPlugin.scala b/src/main/scala/vexriscv/plugin/DBusCachedPlugin.scala
index 10e4550..978dd5d 100644
--- a/src/main/scala/vexriscv/plugin/DBusCachedPlugin.scala
+++ b/src/main/scala/vexriscv/plugin/DBusCachedPlugin.scala
@@ -223,7 +223,10 @@ class DBusCachedPlugin(val config : DataCacheConfig,
         arbitration.haltItself := True
       }
 
-      if(relaxedMemoryTranslationRegister) insert(MEMORY_VIRTUAL_ADDRESS) := cache.io.cpu.execute.address
+      if(relaxedMemoryTranslationRegister) {
+        insert(MEMORY_VIRTUAL_ADDRESS) := cache.io.cpu.execute.address
+        addPrePopTask( () => KeepAttribute(memory.input(MEMORY_VIRTUAL_ADDRESS).getDrivingReg))
+      }
     }
 
     memory plug new Area{