From fb036eba55efada8a626df383a260b34ef269072 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 25 Dec 2021 06:57:15 +0000
Subject: [PATCH] add microwatt mmu.bin regression test test_mmu_3

---
 .../simple/test/test_issuer_mmu_microwatt.py  | 102 ++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 src/soc/simple/test/test_issuer_mmu_microwatt.py

diff --git a/src/soc/simple/test/test_issuer_mmu_microwatt.py b/src/soc/simple/test/test_issuer_mmu_microwatt.py
new file mode 100644
index 00000000..72e6de76
--- /dev/null
+++ b/src/soc/simple/test/test_issuer_mmu_microwatt.py
@@ -0,0 +1,102 @@
+"""simple core test, runs instructions from a TestMemory
+
+related bugs:
+
+ * https://bugs.libre-soc.org/show_bug.cgi?id=363
+"""
+
+# NOTE: to use cxxsim, export NMIGEN_SIM_MODE=cxxsim from the shell
+# Also, check out the cxxsim nmigen branch, and latest yosys from git
+
+import unittest
+import sys
+
+# here is the logic which takes test cases and "executes" them.
+# in this instance (TestRunner) its job is to instantiate both
+# a Libre-SOC nmigen-based HDL instance and an ISACaller python
+# simulator.  it's also responsible for performing the single
+# step and comparison.
+from soc.simple.test.test_runner import TestRunner
+
+#@platen:bookmarks
+#src/openpower/test/runner.py:class TestRunnerBase(FHDLTestCase):
+
+# test with MMU
+from openpower.test.mmu.mmu_cases import MMUTestCase
+from openpower.test.mmu.mmu_rom_cases import MMUTestCaseROM, default_mem
+from openpower.test.ldst.ldst_cases import LDSTTestCase
+from openpower.test.ldst.ldst_exc_cases import LDSTExceptionTestCase
+#from openpower.simulator.test_sim import (GeneralTestCases, AttnTestCase)
+
+from openpower.simulator.program import Program
+from openpower.endian import bigendian
+from openpower.test.common import TestAccumulatorBase
+
+from openpower.consts import MSR
+
+from soc.experiment.test import pagetables
+
+
+class MMUTestCase(TestAccumulatorBase):
+
+    def case_microwatt_test_3_mmu_ld(self):
+        lst = [
+               "ld 6,0(2)",
+              ]
+
+        # set up regs
+        initial_regs = [0] * 32
+        initial_regs[2] = 0x124108
+
+        # no pre-loaded memory here
+        initial_mem = {
+             0x12010: 0x0a00010000000000,
+             0x10000: 0x0930010000000080,
+             0x8108: 0x0000000badc0ffee,
+        }
+
+        # set virtual and non-privileged
+        # msr: 8000000000000011
+        initial_msr = 0 << MSR.PR # must set "problem" state
+        initial_msr |= 1 << MSR.LE # little-endian
+        initial_msr |= 1 << MSR.SF # 64-bit
+        initial_msr |= 1 << MSR.DR # set "virtual" state for data
+
+        # set PRTBL to 0x12000
+        initial_sprs = {720: 0x12000, # PRTBL
+                        48: 1       # PIDR
+                        } 
+
+        print("MMUTEST: initial_msr=",initial_msr)
+        self.add_case(Program(lst, bigendian), initial_regs,
+                             initial_mem=initial_mem,
+                             initial_sprs=initial_sprs,
+                             initial_msr=initial_msr)
+
+
+
+mmu_test3 = {
+             0x12010: 0x0a00010000000000,
+             0x10000: 0x0930010000000080,
+             0x8108: 0x0000000badc0ffee,
+            }
+
+if __name__ == "__main__":
+    svp64 = True
+    if len(sys.argv) == 2:
+        if sys.argv[1] == 'nosvp64':
+            svp64 = False
+        sys.argv.pop()
+
+    print ("SVP64 test mode enabled", svp64)
+
+    unittest.main(exit=False)
+    suite = unittest.TestSuite()
+
+    # MMU/DCache integration tests
+    suite.addTest(TestRunner(MMUTestCase().test_data, svp64=svp64,
+                              microwatt_mmu=True,
+                              rom=mmu_test3))
+
+    runner = unittest.TextTestRunner()
+    runner.run(suite)
-- 
2.30.2