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    • 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
      features.
      
      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:
      
      	CPU_HAS_SMARTMIPS
      	SYS_HAS_CPU_MIPS32_R[12]
      
      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>
      9693a853
  16. 19 Feb, 2007 1 commit
  17. 18 Feb, 2007 1 commit
  18. 13 Feb, 2007 1 commit