ICache: fix DataArray non-ecc width (#1579)

e5f1252b · Guokai Chen · GitHub · 24bf261b · e5f1252b
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Showing with 5 addition and 1 deletion

src/main/scala/xiangshan/frontend/icache/ICache.scala src/main/scala/xiangshan/frontend/icache/ICache.scala +5 -1

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--- a/src/main/scala/xiangshan/frontend/icache/ICache.scala
+++ b/src/main/scala/xiangshan/frontend/icache/ICache.scala
@@ -275,7 +275,11 @@ class ICacheDataArray(implicit p: Parameters) extends ICacheArray

  def getECCFromEncUnit(encUnit: UInt) = {
    require(encUnit.getWidth == encDataUnitBits)
-    encUnit(encDataUnitBits - 1, dataCodeUnit)
+    if (encDataUnitBits == dataCodeUnit) {
+      0.U.asTypeOf(UInt(1.W))
+    } else {
+      encUnit(encDataUnitBits - 1, dataCodeUnit)
+    }
  }

  def getECCFromBlock(cacheblock: UInt) = {