[meta-intel] [PATCH v2] oeqa/runtime/microcode: Enable microcode update test

[Yeoh Ee Peng]

With iucode-tool, identified the selected microcode to be used for
microcode update by the specific processor. Compared the updated
microcode from dmesg to the selected microcode, test failed if the
updated microcode revision does not match the available selected
microcode revision from the iucode-tool. Compute int from hexadecimal
for comparison based on Naveen Kumar suggestion.

Signed-off-by: Yeoh Ee Peng <ee.peng.yeoh at intel.com>
---
 lib/oeqa/runtime/cases/microcode.py | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 lib/oeqa/runtime/cases/microcode.py

diff --git a/lib/oeqa/runtime/cases/microcode.py b/lib/oeqa/runtime/cases/microcode.py
new file mode 100644
index 0000000..ad470d4
--- /dev/null
+++ b/lib/oeqa/runtime/cases/microcode.py
@@ -0,0 +1,36 @@
+from oeqa.runtime.case import OERuntimeTestCase
+from oeqa.runtime.decorator.package import OEHasPackage
+import re
+
+class MicrocodeTest(OERuntimeTestCase):
+
+    def get_revision_from_microcode_string_list(self, microcode_string_list, re_pattern):
+        re_compile = re.compile(re_pattern)
+        rev_list = []
+        for s in microcode_string_list:
+            matched_revs = re_compile.findall(s)
+            if matched_revs:
+                for mr in matched_revs:
+                    rev_list.append(int(mr, 16))
+        return rev_list
+
+    @OEHasPackage(["iucode-tool"])
+    def test_microcode_update(self):
+        (status, output) = self.target.run('iucode_tool /lib/firmware/intel-ucode/ -tb -lS | grep rev')
+        if status:
+            self.skipTest("The iucode_tool detected no microcode for update.")
+
+        selected_microcodes = output.splitlines()
+        selected_rev_list = self.get_revision_from_microcode_string_list(selected_microcodes, "rev (\w*)")
+        self.assertTrue(selected_rev_list, msg="Could not find any rev from iucode_tool selected microcode.")
+
+        (status, output) = self.target.run('dmesg | grep microcode')
+        self.assertEqual(status, 0, msg='status and output: %s and %s' % (status, output))
+
+        updated_microcodes = output.splitlines()
+        updated_rev_list = self.get_revision_from_microcode_string_list(updated_microcodes, "revision=(\w*)")
+        self.assertTrue(updated_rev_list, msg="Could not find any updated revision from microcode dmesg.")
+
+        for ul in updated_rev_list:
+            self.assertTrue(ul in selected_rev_list, msg="Updated revision, %s, not in selected revision list (%s)" %
+                                                         (ul, selected_rev_list))
-- 
2.7.4