• Benjamin Herrenschmidt's avatar
    [PATCH] ppc64: monster cleanup · 6f2697c7
    Benjamin Herrenschmidt authored
    This is the third & hopefully final version of the monster cleanup
    patch. It does significant cleanups of the early boot code of the
    ppc64 kernel, and begins the long process of cleaning up & splitting
    properly the platform support.
    
    It completely reworks the interface between the early code that is
    run in the firmware context (prom_init) and the rest of the kernel,
    in such a way that will make kexec or static device-tree for embedded
    people possible. The early init code can eventually be moved to a
    separate link entity, it no longer touches any of the kernel globals,
    everything is passed via a single blob of data in memory containing
    a flattened version of the device-tree and a memory reserve map.
    
    While doing it, I also cut the ties between pSeries and Powermac. Now,
    the kernel config provides a choice between legacy iSeries and
    "multiplatform". The later is a set of various supported platform,
    each of them beeing a boolean switch, currently defined beeing pSeries
    and PowerMac. You can enable both or just one of them. CONFIG_PPC_PSERIES
    is now specifically set for IBM pSeries support, you can build a PowerMac
    kernel without pSeries support if you which.
    The main goal here is to simplify addition of new platform types.
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    6f2697c7
open_pic.c 22.8 KB