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    SubjectRe: [PATCH] x86/platform: sta2x11: add platform code
    On Tue, 2012-05-29 at 00:39 -0700, H. Peter Anvin wrote:
    > > So, it seems I must go device-tree for the chipset-like mounting.
    > And
    > > what about plug in boards? I may arrange a firmware-loader mechanism
    > > as an alternative, so the vendor of each board can provide the the
    > > platform data for all the sub devices. Actually, if firmware loader
    > is
    > > acceptable, I'd try it first, to avoid changing the boot procedure;
    > > maybe I can save myself from the device tree.
    > >
    > If you're going to use a binary blob for the loader, use either ACPI 5
    > SSDT or device tree format. This is *not* something where
    > (re)invention is encouraged.

    Right, a device-tree blob could easily be passed an x86 has the
    infrastructure to use it already afaik.

    It then becomes a matter of the bootloader to carry it over to the
    kernel a way or another. If the "vendor" boards don't do the right
    thing, you can always do like powerpc for those cases and "package" the
    device-tree blob in the zImage wrapper.

    That way, distribution install tools etc.... can stick the right
    device-tree before doing whatever "flashing" of the image is needed for
    booting etc... and the main kernel image remains agnostic.

    That or the ACPI way but I know nothing about it and thus naturally
    assume it's harder :-)


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