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    SubjectRe: [PATCH] x86/platform: sta2x11: add platform code
    > We have two mechanisms for parameterizing this kind of information: ACPI
    > 5 (which can be considered the "native" method on x86) or flattened
    > device tree (as already used by the CE4100 platform.) Keep in mind that
    > an explicit goal for Linux/x86 is that the same kernel should boot on
    > all platforms, and backsliding on that is not acceptable.

    Yes, it indeed does (the original code I received did not, but mine
    doesn't break stuff for other systems). What I posted uses a kernel
    command-line argument to tell what board it is: the sta2x11 is the
    computer's chipset in most cases, so it should know the wiring soon.

    > The best is for the firmware on your platforms to provide the ACPI or
    > DTB information, as it should. If it doesn't, it gets nastier, but
    > there is absolutely no way we are going into the ARM swamp of having
    > different kernels for different boards.

    It doesn't. I'm currently developing using an add-on pci card running
    on a more conventional computer (and there you may object it is not
    even x86-specific, actually I'd love to see it sold as a separate card
    for industrial use).

    In short, the whole thing is about passing different platform data
    according to which card it is (which includes the DMA configuration
    for uart ports, the card-detect pin for mmci etc). Most such drivers
    are already in the kernel and we are reusing them -- whereas original
    code I got rewrote them all from scratch. But for this we need to pass
    the platform data.

    I'm pretty sure we don't have ACPI, and I'd avoid device tree if
    possible (especially thinking of add-on cards). If you think it makes
    more sense, I can offer the code to drivers/pci or other more generic
    places.

    thanks
    /alessandro


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