twister: support board@revision in platform filter

support to use board@revision as platform filter when running
twister, like "twister -p nucleo_f030r8@1 ...".

Signed-off-by: Chen Peng1 <[email protected]>

Author: Chen Peng1

doc/develop/test/twister.rst

@@ -51,6 +51,12 @@ you can build and run all possible tests using the following options:
 This will build for all available boards and run all applicable tests in
 a simulated (for example QEMU) environment.
 
+If you want to run tests on one or more specific platforms, you can use
+the ``--platform`` option, it is a platform filter for testing, with this
+option, test suites will only be built/run on the platforms specified.
+This option also supports different revisions of one same board,
+you can use ``--platform board@revision`` to test on a specific revision.
+
 The list of command line options supported by twister can be viewed using::
 
         $ ./scripts/twister --help

scripts/pylib/twister/twisterlib/testplan.py

@@ -13,6 +13,7 @@
 from collections import OrderedDict
 from itertools import islice
 import logging
+import copy
 
 logger = logging.getLogger('twister')
 logger.setLevel(logging.DEBUG)
@@ -366,6 +367,23 @@ def add_configurations(self):
                         self.platforms.append(platform)
                         if platform.default:
                             self.default_platforms.append(platform.name)
+                        # support board@revision
+                        # if there is already an existed <board>_<revision>.yaml, then use it to
+                        # load platform directly, otherwise, iterate the directory to
+                        # get all valid board revision based on each <board>_<revision>.conf.
+                        if not "@" in platform.name:
+                            tmp_dir = os.listdir(os.path.dirname(file))
+                            for item in tmp_dir:
+                                result = re.match(f"{platform.name}_(?P<revision>.*)\\.conf", item)
+                                if result:
+                                    revision = result.group("revision")
+                                    yaml_file = f"{platform.name}_{revision}.yaml"
+                                    if yaml_file not in tmp_dir:
+                                        platform_revision = copy.deepcopy(platform)
+                                        revision = revision.replace("_", ".")
+                                        platform_revision.name = f"{platform.name}@{revision}"
+                                        platform_revision.default = False
+                                        self.platforms.append(platform_revision)
 
                 except RuntimeError as e:
                     logger.error("E: %s: can't load: %s" % (file, e))