Move the resolution of the model name from targets into Platform's
_set_model_from_target() (which was already attempting to do that via
dmidecode method).
This commit adds a gem5 simulation platform. The platform is responsible for starting the gem5 simulation.
Changes to be committed:
modified: devlib/__init__.py
modified: devlib/platform/__init__.py
new file: devlib/platform/gem5.py
If big_core is not explicitly specified by the user, it is populated by
Platform (provided the target has exactly two clusters). Perviously this
was done bu assuming that the target boots on little cluster and that
the last CPU is big. This is still used as a fallback, but now Platform
is ware of the names of big CPUs in currently existing big.LITTLE
configurations and uses that first to identify the big.
Since for specific platforms (Juno/TC2) we know what the big core is, we
can set the big_core default so it doesn't have to be specified by the
user. Also remove validation prior to being updated from target and
setting little_core based on the value of big_core rather than by
indexing into core_names.
