• Michael Ellerman's avatar
    [PATCH] powerpc: Merge kexec · 3d1229d6
    Michael Ellerman authored
    This patch merges, to some extent, the PPC32 and PPC64 kexec implementations.
    
    We adopt the PPC32 approach of having ppc_md callbacks for the kexec functions.
    The current PPC64 implementation becomes the "default" implementation for PPC64
    which platforms can select if they need no special treatment.
    
    I've added these default callbacks to pseries/maple/cell/powermac, this means
    iSeries no longer supports kexec - but it never worked anyway.
    
    I've renamed PPC32's machine_kexec_simple to default_machine_kexec, inline with
    PPC64. Judging by the comments it might be better named machine_kexec_non_of,
    or something, but at the moment it's the only implementation for PPC32 so it's
    the "default".
    
    Kexec requires machine_shutdown(), which is in machine_kexec.c on PPC32, but we
    already have in setup-common.c on powerpc. All this does is call
    ppc_md.nvram_sync, which only powermac implements, so instead make
    machine_shutdown a ppc_md member and have it call core99_nvram_sync directly
    on powermac.
    
    I've also stuck relocate_kernel.S into misc_32.S for powerpc.
    
    Built for ARCH=ppc, and 32 & 64 bit ARCH=powerpc, with KEXEC=y/n. Booted on
    P5 LPAR and successfully kexec'ed.
    
    Should apply on top of 493f25ef.
    Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
    Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
    3d1229d6
machine_kexec_32.c 1.93 KB