• Franck Bui-Huu's avatar
    [MIPS] Add basic SMARTMIPS ASE support · 9693a853
    Franck Bui-Huu authored
    This patch adds trivial support for SMARTMIPS extension. This extension
    is currently implemented by 4KS[CD] CPUs.
    Basically it saves/restores ACX register, which is part of the SMARTMIPS
    ASE, when needed. This patch does *not* add any support for Smartmips MMU
    Futhermore this patch does not add explicit support for 4KS[CD] CPUs since
    they are respectively mips32 and mips32r2 compliant.  So with the current
    processor configuration, a platform that has such CPUs needs to select
    both configs:
    This is due to the processor configuration which is mixing up all the
    architecture variants and the processor types.
    The drawback of this, is that we currently pass '-march=mips32' option to
    gcc when building a kernel instead of '-march=4ksc' for 4KSC case. This
    can lead to a kernel image a little bit bigger than required.
    Signed-off-by: default avatarFranck Bui-Huu <fbuihuu@gmail.com>
    Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
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