Merge pull request #284 from liamchalk00/main

Pmpadrdecs test cases changing AdrMode to 2 or 3

sim/coverage-exclusions-rv64gc.do

@@ -201,3 +201,5 @@ coverage exclude -scope /dut/core/ifu/immu/immu/tlb/tlb/tlbcontrol -linerange $l
 set line [GetLineNum ../src/generic/flop/floprc.sv "reset \\| clear"]
 coverage exclude -scope /dut/core/priv/priv/pmd/wfi/wficountreg -linerange $line-$line -item c 1 -feccondrow 2
 
+# Excluding pmpadrdecs[0] coverage case for PAgePMPAdrIn being hardwired to 1
+coverage exclude -scope /dut/core/ifu/immu/immu/pmp/pmpchecker/pmp/pmpadrdecs[0] -linerange [GetLineNum ../src/mmu/pmpadrdec.sv "exclusion-tag: PAgePMPAdrIn"] -item e 1 -fecexprrow 1

src/mmu/pmpadrdec.sv

@@ -63,7 +63,7 @@ module pmpadrdec (
   assign CurrentAdrFull  = {PMPAdr,  2'b00};
   assign PAltPMPAdr = {1'b0, PhysicalAddress} < {1'b0, CurrentAdrFull}; // unsigned comparison
   assign PAgePMPAdrOut = ~PAltPMPAdr;
-  assign TORMatch = PAgePMPAdrIn & PAltPMPAdr;
+  assign TORMatch = PAgePMPAdrIn & PAltPMPAdr; // exclusion-tag: PAgePMPAdrIn
 
   // Naturally aligned regions
   logic [`PA_BITS-1:0] NAMask, NABase;

testbench/tests.vh

@@ -63,7 +63,8 @@ string tvpaths[] = '{
     "pmp",
     "pmpcfg",
     "pmpcfg1",
-    "pmpcfg2"
+    "pmpcfg2",
+    "pmpadrdecs"
   };
 
   string coremark[] = '{

tests/coverage/pmpadrdecs.S

@@ -0,0 +1,22 @@
+// pmpadrdecs
+// Liam Chalk, lchalk@hmc.edu, 4/27/2023
+// Setting AdrMode to 2 or 3 for pmpadrdecs[0-4]
+
+#include "WALLY-init-lib.h" 
+main: 
+
+    # Writing values to pmpcfg0 to change AdrMode to 2 or 3
+    # pmpadrdec[0]
+    li t0, 0x0000000010
+    csrw pmpcfg0, t0
+    # pmpadrdec[1]
+    li t0, 0x0000001800
+    csrw pmpcfg0, t0
+    # pmpadrdec[2]
+    li t0, 0x0000180000
+    csrw pmpcfg0, t0
+    # pmpadrdec[4]
+    li t0, 0x1000000000
+    csrw pmpcfg0, t0
+
+    j done