• Vineet Gupta's avatar
    ARC: [Review] Multi-platform image #2: Board callback Infrastructure · 03a6d28c
    Vineet Gupta authored
    The orig platform code orgnaization was singleton design pattern - only
    one platform (and board thereof) would build at a time.
    
    Thus any platform/board specific code (e.g. irq init, early init ...)
    expected by ARC common code was exported as well defined set of APIs,
    with only ONE instance building ever.
    
    Now with multiple-platform build requirement, that design of code no
    longer holds - multiple board specific calls need to build at the same
    time - so ARC common code can't use the API approach, it needs a
    callback based design where each board registers it's specific set of
    functions, and at runtime, depending on board detection, the callbacks
    are used from the registry.
    
    This commit adds all the infrastructure, where board specific callbacks
    are specified as a "maThine description".
    
    All the hooks are placed in right spots, no board callbacks registered
    yet (with MACHINE_STARt/END constructs) so the hooks will not run.
    
    Next commit will actually convert the platform to this infrastructure.
    Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
    03a6d28c
mach_desc.h 2.56 KB