46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From 15a051ad98309f71989f9bda4b020fff160f4022 Mon Sep 17 00:00:00 2001
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From: David Daney <david.daney@cavium.com>
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Date: Fri, 24 May 2013 20:54:10 +0000
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Subject: [PATCH 2/2] MIPS: Only set cpu_has_mmips if SYS_SUPPORTS_MICROMIPS
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commit 3ddc14add5e6341cf8ef4058c34c67ba7fd15317 upstream.
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As Jonas Gorske said in his patch:
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Disable cpu_has_mmips for everything but SEAD3 and MALTA. Most of
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these platforms are from before the micromips introduction, so they
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are very unlikely to implement it.
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Reduces an -Os compiled, uncompressed kernel image by 8KiB for
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BCM63XX.
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This patch taks a different approach than his, we gate the runtime
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test for microMIPS by the config symbol SYS_SUPPORTS_MICROMIPS.
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Signed-off-by: David Daney <david.daney@cavium.com>
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Cc: Jonas Gorski <jogo@openwrt.org>
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Cc: Steven J. Hill <Steven.Hill@imgtec.com>
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Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Cc: linux-mips@linux-mips.org
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Patchwork: https://patchwork.linux-mips.org/patch/5327/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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arch/mips/include/asm/cpu-features.h | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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--- a/arch/mips/include/asm/cpu-features.h
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+++ b/arch/mips/include/asm/cpu-features.h
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@@ -99,7 +99,11 @@
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#define cpu_has_rixi (cpu_data[0].options & MIPS_CPU_RIXI)
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#endif
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#ifndef cpu_has_mmips
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-#define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
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+# ifdef CONFIG_SYS_SUPPORTS_MICROMIPS
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+# define cpu_has_mmips (cpu_data[0].options & MIPS_CPU_MICROMIPS)
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+# else
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+# define cpu_has_mmips 0
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+# endif
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#endif
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#ifndef cpu_has_vtag_icache
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#define cpu_has_vtag_icache (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
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