From: Tobias Platen <tplaten@posteo.de>
Date: Wed, 14 Apr 2021 17:34:13 +0000 (+0200)
Subject: radixmmu: error handling
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a642433a73ca19062a781d921346538dd1edede3;p=soc.git

radixmmu: error handling
---

diff --git a/src/soc/decoder/isa/radixmmu.py b/src/soc/decoder/isa/radixmmu.py
index b127e6f4..22a84a3a 100644
--- a/src/soc/decoder/isa/radixmmu.py
+++ b/src/soc/decoder/isa/radixmmu.py
@@ -296,6 +296,10 @@ class RADIX:
 
         pte = self._walk_tree(addr, pgbase, mode, mbits, shift, priv)
 
+        if type(pte)==str:
+            print("error on load",pte)
+            return 0
+
         # use pte to load from phys address
         return self.mem.ld(pte.value, width, swap, check_in_mem)
 
@@ -462,6 +466,11 @@ class RADIX:
         print("pgbase",pgbase)
         #assert(pgbase.value==0x30000)
 
+        if type(addr) == str:
+            return addr
+        if type(shift) == str:
+            return shift
+
         addrsh = addrshift(addr,shift)
         print("addrsh",addrsh)