def get_rule(self, device: WrappedNode) -> DeviceRule:
''' Returns the matching DeviceRule for this device. '''
if not device.has_prop('compatible'):
raise ValueError(
'Not sure what to do with node {} with no compatible!'.format(device.path))
for compat in device.get_prop('compatible').strings:
if compat in self.rules:
return self.rules[compat]
raise ValueError('Failed to match compatibles "{}" for node {}!'.format(
', '.join(device.get_prop('compatible').strings), device.path))
def get_matched_compatible(self, device: WrappedNode) -> str:
''' Returns the best matching compatible string for this device '''
if not device.has_prop('compatible'):
raise ValueError(
'Not sure what to do with node {} with no compatible!'.format(device.path))
for compat in device.get_prop('compatible').strings:
if compat in self.rules:
return compat
return None
def create_irq_controller(node: WrappedNode, tree: 'FdtParser'):
if node.has_prop('interrupt-map'):
# interrupt nexus
return InterruptNexus(node, tree)
elif node.has_prop('compatible'):
# try and find a matching class that will know how to parse it
for compat in node.get_prop('compatible').strings:
if compat in CONTROLLERS:
return CONTROLLERS[compat](node, tree)
# otherwise, just return a dummy irq controller
return IrqController(node, tree)
def visitor(node: WrappedNode):
if node.has_prop('device_type') and node.get_prop(
'device_type').strings[0] == 'memory':
regions.update(node.get_regions())