from . import char, bus, ahci

@"Devices & Peripherials"
def hal():
    """ Lunaix hardware asbtraction layer """

    @"Devicetree for hardware discovery"
    def use_devicetree() -> bool:
        """
            Decide whether to use Devicetree for platform
            resource topology sensing.

            On some architecture, Lunaix will fallback to use
            devicetree when ran out of options. For others, such
            as those designed with embedded support in mind, 
            devicetree might be mandatory and perhaps the only
            way.
        """
        require (not arch_x86)

        return False

    @"Maximum size of device tree blob (in KiB)"
    @readonly
    def dtb_maxsize() -> int:
        """
            Maximum size for a firmware provided device tree blob
        """
        require (use_devicetree)

        return 256
    
    @"Graphic Devices"
    def use_graphic_dev() -> bool:
        """
            Support of graphical devices and display protocol
        """
        return False