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authorDavid Daney <david.daney@cavium.com>2013-05-24 20:54:10 +0000
committerRalf Baechle <ralf@linux-mips.org>2013-07-01 15:10:57 +0200
commit3ddc14add5e6341cf8ef4058c34c67ba7fd15317 (patch)
tree2b155a83010189ef5e7720466cb78c1a00423a23 /arch/mips
parentc214c03512b67e56dea3f4471705f8caae49553a (diff)
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: David Daney <david.daney@cavium.com> Cc: Jonas Gorski <jogo@openwrt.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5327/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/include/asm/cpu-features.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 9609812bc8f2..8e0c125c59a1 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -109,7 +109,11 @@
#define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
#endif
#ifndef cpu_has_mmips
-#define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
+# 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)