From: Michael Nolan <mtnolan2640@gmail.com>
Date: Sat, 29 Feb 2020 22:26:06 +0000 (-0500)
Subject: Add default case to decoder
X-Git-Tag: div_pipeline~1803
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=315929daa4f81c511db3fc1041b8297e92d54683;p=soc.git

Add default case to decoder
---

diff --git a/src/decoder/power_decoder.py b/src/decoder/power_decoder.py
index 275c85a7..22e52435 100644
--- a/src/decoder/power_decoder.py
+++ b/src/decoder/power_decoder.py
@@ -43,6 +43,19 @@ class PowerDecoder(Elaboratable):
                     for bit in single_bit_flags:
                         sig = getattr(self, get_signal_name(bit))
                         comb += sig.eq(int(row[bit]))
+            with m.Default():
+                comb += self.function_unit.eq(Function.NONE)
+                comb += self.internal_op.eq(InternalOp.OP_ILLEGAL)
+                comb += self.in1_sel.eq(0)
+                comb += self.in2_sel.eq(0)
+                comb += self.in3_sel.eq(0)
+                comb += self.out_sel.eq(0)
+                comb += self.ldst_len.eq(0)
+                comb += self.rc_sel.eq(0)
+                comb += self.cry_in.eq(0)
+                for bit in single_bit_flags:
+                    sig = getattr(self, get_signal_name(bit))
+                    comb += sig.eq(0)
         return m
 
     def ports(self):
diff --git a/src/decoder/power_enums.py b/src/decoder/power_enums.py
index 6241f752..38ef0325 100644
--- a/src/decoder/power_enums.py
+++ b/src/decoder/power_enums.py
@@ -29,8 +29,9 @@ def get_signal_name(name):
 
 @unique
 class Function(Enum):
-    ALU = 0
-    LDST = 1
+    NONE = 0
+    ALU = 1
+    LDST = 2
 
 
 @unique