West: Add west simulate command

Introduce `simulate `command for running samples on a simulator of
choice. Initial implementation consists of one runner, dedicated for
Renode.

Signed-off-by: Michał Szprejda <mszprejda@antmicro.com>

boards/common/renode.board.cmake

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+board_set_sim_runner_ifnset(renode)
+
+board_runner_args(renode "--renode-command=$elf=@${PROJECT_BINARY_DIR}/${KERNEL_ELF_NAME}")
+board_runner_args(renode "--renode-command=include @${RENODE_SCRIPT}")
+
+board_finalize_runner_args(renode)

boards/microchip/m2gl025_miv/board.cmake

@@ -3,3 +3,6 @@
 set(SUPPORTED_EMU_PLATFORMS renode)
 set(RENODE_SCRIPT ${CMAKE_CURRENT_LIST_DIR}/support/m2gl025_miv.resc)
 set(RENODE_UART sysbus.uart)
+
+set_ifndef(BOARD_SIM_RUNNER renode)
+include(${ZEPHYR_BASE}/boards/common/renode.board.cmake)

boards/sifive/hifive1/board.cmake

@@ -28,3 +28,6 @@ elseif("${BOARD_REVISION}" STREQUAL "B")
   board_runner_args(jlink "--tool-opt=-autoconnect 1")
   include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
 endif()
+
+set_ifndef(BOARD_SIM_RUNNER renode)
+include(${ZEPHYR_BASE}/boards/common/renode.board.cmake)

cmake/flash/CMakeLists.txt

@@ -97,6 +97,10 @@ function(create_runners_yaml)
     runners_yaml_append("\n# Default debug runner if --runner is not given.")
     runners_yaml_append("debug-runner: ${BOARD_DEBUG_RUNNER}")
   endif()
+  if(DEFINED BOARD_SIM_RUNNER)
+    runners_yaml_append("\n# Default simulation runner if --runner is not given.")
+    runners_yaml_append("sim-runner: ${BOARD_SIM_RUNNER}")
+  endif()
 
   # Sets up common runner configuration values.
   runners_yaml_append_config()

cmake/modules/extensions.cmake

@@ -705,9 +705,10 @@ endfunction()
 # This section provides glue between CMake and the Python code that
 # manages the runners.
 
+set(TYPES "FLASH" "DEBUG" "SIM")
 function(_board_check_runner_type type) # private helper
-  if (NOT (("${type}" STREQUAL "FLASH") OR ("${type}" STREQUAL "DEBUG")))
+  if (NOT "${type}" IN_LIST TYPES)
-    message(FATAL_ERROR "invalid type ${type}; should be FLASH or DEBUG")
+    message(FATAL_ERROR "invalid type ${type}; should be one of: ${TYPES}")
   endif()
 endfunction()
 
@@ -723,8 +724,8 @@ endfunction()
 #
 # This would set the board's flash runner to "pyocd".
 #
-# In general, "type" is FLASH or DEBUG, and "runner" is the name of a
+# In general, "type" is FLASH, DEBUG or SIM and "runner" is
-# runner.
+# the name of a runner.
 function(board_set_runner type runner)
   _board_check_runner_type(${type})
   if (DEFINED BOARD_${type}_RUNNER)
@@ -765,6 +766,11 @@ macro(board_set_debugger_ifnset runner)
   board_set_runner_ifnset(DEBUG ${runner})
 endmacro()
 
+# A convenience macro for board_set_runner_ifnset(SIM ${runner}).
+macro(board_set_sim_runner_ifnset runner)
+  board_set_runner_ifnset(SIM ${runner})
+endmacro()
+
 # This function is intended for board.cmake files and application
 # CMakeLists.txt files.
 #

doc/develop/west/build-flash-debug.rst

@@ -698,6 +698,49 @@ determined by the imported subclasses of ``ZephyrBinaryRunner``.
 runner implementations are in other submodules, such as ``runners.nrfjprog``,
 ``runners.openocd``, etc.
 
+Simulating a board with: ``west simulate``
+******************************************
+
+Basics
+======
+
+Currently the command supports only one runner which is using Renode,
+but can be easily extended by adding other runners.
+
+From a Zephyr build directory, to run the built binary::
+
+  west simulate --runner=renode
+
+This will start Renode and configure simulation based on a default ``.resc`` script
+for the current platform with the zephyr.elf file loaded by default. The simulation
+then can be started by typing "start" or "s" in Renode's Monitor. This can also be
+done by passing a command to Renode, using an argument provided by the runner:
+
+  west simulate --runner=renode --renode-command start
+
+To pass an argument to Renode itself, for example to start Renode in console mode
+intead of a separate window:
+
+  west simulate --runner=renode --renode-arg="--console"
+
+From that point on Renode can be used normally in both console and window modes.
+For details on using Renode see `Renode - documentation`_.
+
+.. _Renode - documentation:
+   http://docs.renode.io
+
+Runner-Specific Overrides
+=========================
+
+To view all of the available options supported by the runners, as well
+as their usage information, use ``--context`` (or``-H``)::
+
+  west simulate --runner=renode --context
+
+To view all available options Renode supports, use::
+
+  west simulate --runner=renode --renode-help
+
 Hacking
 *******
 

scripts/west-commands.yml

@@ -66,3 +66,8 @@ west-commands:
       - name: bindesc
         class: Bindesc
         help: work with Binary Descriptors
+  - file: scripts/west_commands/simulate.py
+    commands:
+      - name: simulate
+        class: Simulate
+        help: simulate board

scripts/west_commands/run_common.py

@@ -512,7 +512,7 @@ def runners_yaml_path(build_dir, board):
     ret = Path(build_dir) / 'zephyr' / 'runners.yaml'
     if not ret.is_file():
         log.die(f'either a pristine build is needed, or board {board} '
-                "doesn't support west flash/debug "
+                "doesn't support west flash/debug/simulate "
                 '(no ZEPHYR_RUNNERS_YAML in CMake cache)')
     return ret
 

scripts/west_commands/runners/__init__.py

@@ -48,6 +48,7 @@ _names = [
     'nxp_s32dbg',
     'openocd',
     'pyocd',
+    'renode',
     'qemu',
     'silabs_commander',
     'spi_burn',

scripts/west_commands/runners/core.py

@@ -200,7 +200,7 @@ class MissingProgram(FileNotFoundError):
         super().__init__(errno.ENOENT, os.strerror(errno.ENOENT), program)
 
 
-_RUNNERCAPS_COMMANDS = {'flash', 'debug', 'debugserver', 'attach'}
+_RUNNERCAPS_COMMANDS = {'flash', 'debug', 'debugserver', 'attach', 'simulate'}
 
 @dataclass
 class RunnerCaps:
@@ -212,7 +212,7 @@ class RunnerCaps:
     Available capabilities:
 
     - commands: set of supported commands; default is {'flash',
-      'debug', 'debugserver', 'attach'}.
+      'debug', 'debugserver', 'attach', 'simulate'}.
 
     - dev_id: whether the runner supports device identifiers, in the form of an
       -i, --dev-id option. This is useful when the user has multiple debuggers

scripts/west_commands/runners/renode.py

@@ -0,0 +1,62 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+'''Runner stub for Renode.'''
+
+import subprocess
+from runners.core import ZephyrBinaryRunner, RunnerCaps
+
+
+class RenodeRunner(ZephyrBinaryRunner):
+    '''Place-holder for Renode runner customizations.'''
+
+    def __init__(self, cfg, args):
+        super().__init__(cfg)
+        self.renode_arg = args.renode_arg
+        self.renode_command = args.renode_command
+        self.renode_help = args.renode_help
+
+    @classmethod
+    def name(cls):
+        return 'renode'
+
+    @classmethod
+    def capabilities(cls):
+        return RunnerCaps(commands={'simulate'}, hide_load_files=True)
+
+    @classmethod
+    def do_add_parser(cls, parser):
+        parser.add_argument('--renode-arg',
+                            metavar='ARG',
+                            action='append',
+                            help='additional argument passed to Renode; `--help` will print all possible arguments')
+        parser.add_argument('--renode-command',
+                            metavar='COMMAND',
+                            action='append',
+                            help='additional command passed to Renode\'s simulation')
+        parser.add_argument('--renode-help',
+                            default=False,
+                            action='store_true',
+                            help='print all possible `Renode` arguments')
+
+    @classmethod
+    def do_create(cls, cfg, args):
+        return RenodeRunner(cfg, args)
+
+    def do_run(self, command, **kwargs):
+        self.run_test(**kwargs)
+
+    def run_test(self, **kwargs):
+        cmd = ['renode']
+        if self.renode_help is True:
+            cmd.append('--help')
+        else:
+            if self.renode_arg is not None:
+                for arg in self.renode_arg:
+                    cmd.append(arg)
+            if self.renode_command is not None:
+                for command in self.renode_command:
+                    cmd.append('-e')
+                    cmd.append(command)
+        subprocess.run(cmd, check=True)

scripts/west_commands/simulate.py

@@ -0,0 +1,29 @@
+# Copyright (c) 2024 Antmicro <www.antmicro.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from west.commands import WestCommand
+from run_common import add_parser_common, do_run_common
+
+EXPORT_DESCRIPTION = '''\
+Simulate the board on a runner of choice using generated artifacts.
+'''
+
+
+class Simulate(WestCommand):
+
+    def __init__(self):
+        super(Simulate, self).__init__(
+            'simulate',
+            # Keep this in sync with the string in west-commands.yml.
+            'simulate board',
+            EXPORT_DESCRIPTION,
+            accepts_unknown_args=True)
+
+        self.runner_key = 'sim-runner'  # in runners.yaml
+
+    def do_add_parser(self, parser_adder):
+        return add_parser_common(self, parser_adder)
+
+    def do_run(self, my_args, runner_args):
+        do_run_common(self, my_args, runner_args)

scripts/west_commands/tests/test_imports.py

@@ -39,6 +39,7 @@ def test_runner_imports():
                     'openocd',
                     'pyocd',
                     'qemu',
+                    'renode',
                     'silabs_commander',
                     'spi_burn',
                     'stm32cubeprogrammer',