From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 13 May 2021 15:39:33 +0000 (+0100)
Subject: whoops TLBIE must *clear* the valid bit not set it.  TLBUpdate
X-Git-Url: https://git.libre-soc.org/?p=soc.git;a=commitdiff_plain;h=6e8875c3f753fcb7b5d6a9296f0364dc72ba1501

whoops TLBIE must *clear* the valid bit not set it.  TLBUpdate
---

diff --git a/src/soc/experiment/dcache.py b/src/soc/experiment/dcache.py
index cc3b2efc..82b115bb 100644
--- a/src/soc/experiment/dcache.py
+++ b/src/soc/experiment/dcache.py
@@ -465,7 +465,7 @@ class DTLBUpdate(Elaboratable):
             pass # clear all back in parent
         with m.Elif(self.tlbie):
             with m.If(self.tlb_hit):
-                comb += db_out.bit_select(self.tlb_hit_way, 1).eq(1)
+                comb += db_out.bit_select(self.tlb_hit_way, 1).eq(0)
                 comb += self.v_updated.eq(1)
 
         with m.Elif(self.tlbwe):