riscv/rocket-chip
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make sure access to invalid physical address treated as exception

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This commit is contained in:
Howard Mao
2015-09-22 09:42:27 -07:00
parent 16c748576a
commit 9eb988a4c6
4 changed files with 17 additions and 9 deletions
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4
rocket/src/main/scala/icache.scala
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@ -106,7 +106,9 @@ class Frontend(btb_updates_out_of_order: Boolean = false) extends FrontendModule
icache.io.req.bits.idx := io.cpu.npc
icache.io.invalidate := io.cpu.invalidate
icache.io.req.bits.ppn := tlb.io.resp.ppn
icache.io.req.bits.kill := io.cpu.req.valid || tlb.io.resp.miss || icmiss || io.ptw.invalidate
icache.io.req.bits.kill := io.cpu.req.valid ||
tlb.io.resp.miss || tlb.io.resp.xcpt_if ||
icmiss || io.ptw.invalidate
icache.io.resp.ready := !stall && !s1_same_block
io.cpu.resp.valid := s2_valid && (s2_xcpt_if || icache.io.resp.valid)