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Commit 3ddc14ad authored by David Daney's avatar David Daney Committed by Ralf Baechle
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MIPS: Only set cpu_has_mmips if SYS_SUPPORTS_MICROMIPS 



As Jonas Gorske said in his patch:

   Disable cpu_has_mmips for everything but SEAD3 and MALTA. Most of
   these platforms are from before the micromips introduction, so they
   are very unlikely to implement it.

   Reduces an -Os compiled, uncompressed kernel image by 8KiB for
   BCM63XX.

This patch taks a different approach than his, we gate the runtime
test for microMIPS by the config symbol SYS_SUPPORTS_MICROMIPS.

Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Acked-by: default avatarSteven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5327/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent c214c035

arch/mips/include/asm/cpu-features.h

+5 −1
Original line number Diff line number Diff line
@@ -109,7 +109,11 @@ 
#define cpu_has_rixi		(cpu_data[0].options & MIPS_CPU_RIXI)

#endif

#ifndef cpu_has_mmips

# ifdef CONFIG_SYS_SUPPORTS_MICROMIPS

#  define cpu_has_mmips		(cpu_data[0].options & MIPS_CPU_MICROMIPS)

# else

#  define cpu_has_mmips		0

# endif

#endif

#ifndef cpu_has_vtag_icache

#define cpu_has_vtag_icache	(cpu_data[0].icache.flags & MIPS_CACHE_VTAG)