• Paul Burton's avatar
    MIPS: generic: Introduce generic DT-based board support · eed0eabd
    Paul Burton authored
    Introduce a "generic" platform, which aims to be board-agnostic by
    making use of device trees passed by the boot protocol defined in the
    MIPS UHI (Universal Hosting Interface) specification. Provision is made
    for supporting boards which use a legacy boot protocol that can't be
    changed, but adding support for such boards or any others is left to
    followon patches.
    
    Right now the built kernels expect to be loaded to 0x80100000, ie. in
    kseg0. This is fine for the vast majority of MIPS platforms, but
    nevertheless it would be good to remove this limitation in the future by
    mapping the kernel via the TLB such that it can be loaded anywhere & map
    itself appropriately.
    
    Configuration is handled by dynamically generating configs using
    scripts/kconfig/merge_config.sh, somewhat similar to the way powerpc
    makes use of it. This allows for variations upon the configuration, eg.
    differing architecture revisions or subsets of driver support for
    differing boards, to be handled without having a large number of
    defconfig files.
    Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
    Cc: linux-mips@linux-mips.org
    Patchwork: https://patchwork.linux-mips.org/patch/14353/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
    eed0eabd
irq.c 1.44 KB