test_cros_{ec,fp,pd,tp}_abi: Check standard MCU ABI

The scripts checks the embedded controller and other MCU ABI to ensure
that all required files are present.
Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

test-cros-ec.py

@@ -171,6 +171,12 @@ def sysfs_check_attributes_exists(s, path, name, files, check_devtype):
     if match == 0:
         s.skipTest("No " + name + " found, skipping")
 
+def check_mcu_abi(s, name):
+        if not os.path.exists("/dev/cros_" + name):
+            s.skipTest("MCU " + name + " not supported, skipping")
+        files = ["flashinfo", "reboot", "version"]
+        sysfs_check_attributes_exists(s, "/sys/class/chromeos/", "cros_" + name, files, False)
+
 ###############################################################################
 # TEST RUNNERS
 ###############################################################################
@@ -388,6 +394,18 @@ class TestCrosEC(unittest.TestCase):
             line = fd.readline()
         fd.close()
 
+    def test_cros_ec_abi(self):
+        check_mcu_abi(self, "ec");
+
+    def test_cros_fp_abi(self):
+        check_mcu_abi(self, "fp");
+
+    def test_cros_tp_abi(self):
+        check_mcu_abi(self, "tp");
+
+    def test_cros_pd_abi(self):
+        check_mcu_abi(self, "pd");
+
 if __name__ == '__main__':
     unittest.main(testRunner=LavaTestRunner(),
         # these make sure that some options that are not applicable