Some configuration options or device tree nodes affect the way that
runners ought to behave, but there's no good way for them to report
whether they can handle them.
One motivating example is CONFIG_FLASH_LOAD_OFFSET, as influenced by
the zephyr,code-partition chosen node in the DT for architectures
where CONFIG_HAS_FLASH_LOAD_OFFSET=y.
If CONFIG_FLASH_LOAD_OFFSET is nonzero, the 'flash' command ought to
place the kernel at that address offset from the device flash's start
address. Runners don't support this right now, which should be
fixed. However, we don't want to mandate support for this feature,
since not all targets need it.
We need to let runners declare what their capabilities are. Make it so
by adding a RunnerCaps class to the runner core. This currently just
states which commands a runner can handle, but can be generalized to
implement the above use case.
Signed-off-by: Marti Bolivar <marti@opensourcefoundries.com>
The Python-based runners have replaced the old shell scripts. Refactor
the build system accordingly:
- FLASH_SCRIPT is now BOARD_FLASH_RUNNER
- DEBUG_SCRIPT is now BOARD_DEBUG_RUNNER
The values, rather than being the names of files, are now the names of
runners in scripts/support/runner. They are still short, descriptive
names like "openocd", "jlink", "em-starterkit", etc.
Adjust the zephyr_flash_debug.py call and runner internals
accordingly. Have each runner class report a name and the commands it
can handle. This lets us move some boilerplate from each do_run()
method into the common run() routine, and enables further improvements
in future patches.
The handles_command() method is temporary, and will be replaced by a
more general mechanism for describing runner capabilities in a
subsequent patch. The initial use case for extending this is to add
device tree awareness to the runners.
To try to avoid user confusion, abort the configuration if an
xxx_SCRIPT is defined.
Signed-off-by: Marti Bolivar <marti@opensourcefoundries.com>
Have the subclasses implement a do_run() method instead, which run()
delegates to. This will make it possible to handle common
functionality in the superclass before runner-specific methods are
called. It is a prerequisite for tasks like loading the build time
configuration to add device tree awareness.
Signed-off-by: Marti Bolivar <marti@opensourcefoundries.com>
Factor the classes which do the work into a new "runner" package. This
package has a core module where ZephyrBinaryRunner and common helpers
will live, and one file per subclass / runner front-end.
The top-level script, zephyr_flash_debug.py, still exists, but just
delegates its work to the core.
Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
