riscv/rocket-chip
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merge I$, ITLB, BTB into Frontend

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This commit is contained in:
Andrew Waterman
2012-10-09 21:35:03 -07:00
parent fcd69dba98
commit 661f8e635b
15 changed files with 946 additions and 1143 deletions
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13
rocket/src/main/scala/dpath_util.scala
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@ -36,13 +36,14 @@ class rocketDpathBTB(entries: Int) extends Component
val valid = Reg(resetVal = Bool(false))
val my_hit = valid && tag === io.current_pc
val my_update = valid && tag === io.correct_pc
val my_clr = io.clr && my_update || io.invalidate
val my_wen = io.wen && (my_update || !update && UFix(i) === repl_way)
valid := !my_clr && (valid || my_wen)
when (my_wen) {
tag := io.correct_pc
target := io.correct_target
when (io.wen && (my_update || !update && UFix(i) === repl_way)) {
valid := Bool(false)
when (!io.clr) {
valid := Bool(true)
tag := io.correct_pc
target := io.correct_target
}
}
hit_reduction = hit_reduction || my_hit