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powerpc: Remove CONFIG_POWER4_ONLY

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Remove CONFIG_POWER4_ONLY, the option is badly named and only does two
things:

- It wraps the MMU segment table code. With feature fixups there is
  little downside to compiling this in.

- It uses the newer mtocrf instruction in various assembly functions.
  Instead of making this a compile option just do it at runtime via
  a feature fixup.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2012-04-18 02:21:52 +00:00
committed by Benjamin Herrenschmidt
parent 6cd3209967
commit 694caf0255
10 changed files with 19 additions and 36 deletions
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10
arch/powerpc/include/asm/ppc_asm.h
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@@ -369,7 +369,15 @@ BEGIN_FTR_SECTION \
END_FTR_SECTION_IFCLR(CPU_FTR_601)
#endif
#ifdef CONFIG_PPC64
#define MTOCRF(FXM, RS) \
BEGIN_FTR_SECTION_NESTED(848); \
mtcrf (FXM), (RS); \
FTR_SECTION_ELSE_NESTED(848); \
mtocrf (FXM), (RS); \
ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_NOEXECUTE, 848)
#endif
/*
* This instruction is not implemented on the PPC 603 or 601; however, on
* the 403GCX and 405GP tlbia IS defined and tlbie is not.