From 48c3433349f30a9305a72f16979695b8006e98ad Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 30 Jul 2020 13:19:07 +0100
Subject: [PATCH] set sel line in minerva instruction fetch

---
 src/soc/minerva/units/fetch.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/soc/minerva/units/fetch.py b/src/soc/minerva/units/fetch.py
index 20221275..b3e536b0 100644
--- a/src/soc/minerva/units/fetch.py
+++ b/src/soc/minerva/units/fetch.py
@@ -62,13 +62,15 @@ class BareFetchUnit(FetchUnitInterface, Elaboratable):
                 m.d.sync += [
                     self.ibus.cyc.eq(0),
                     self.ibus.stb.eq(0),
+                    self.ibus.sel.eq(0),
                     ibus_rdata.eq(self.ibus.dat_r)
                 ]
         with m.Elif(self.a_valid_i & ~self.a_stall_i):
             m.d.sync += [
                 self.ibus.adr.eq(self.a_pc_i[self.adr_lsbs:]),
                 self.ibus.cyc.eq(1),
-                self.ibus.stb.eq(1)
+                self.ibus.stb.eq(1),
+                self.ibus.sel.eq((1<<(1<<self.adr_lsbs))-1),
             ]
 
         with m.If(self.ibus.cyc & self.ibus.err):
@@ -172,12 +174,14 @@ class CachedFetchUnit(FetchUnitInterface, Elaboratable):
                 m.d.sync += [
                     bare_port.cyc.eq(0),
                     bare_port.stb.eq(0),
+                    bare_port.sel.eq(0),
                     bare_rdata.eq(bare_port.dat_r)
                 ]
         with m.Elif(~a_icache_select & self.a_valid_i & ~self.a_stall_i):
             m.d.sync += [
                 bare_port.cyc.eq(1),
                 bare_port.stb.eq(1),
+                bare_port.sel.eq((1<<(1<<self.adr_lsbs))-1),
                 bare_port.adr.eq(self.a_pc_i[self.adr_lsbs:])
             ]
 
-- 
2.30.2