linux-kernel - [PATCH] arch: powerpc: ppc4xx compile flag optimizations

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Date:   Thu, 22 Dec 2016 09:06:08 +0100
From:   John Crispin <john@...ozen.org>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Imre Kaloz <kaloz@...nwrt.org>, John Crispin <john@...ozen.org>
Subject: [PATCH] arch: powerpc: ppc4xx compile flag optimizations

From: Imre Kaloz <kaloz@...nwrt.org>

This patch splits up the compile flags between ppc40x and ppc44x.

Signed-off-by: John Crispin <john@...ozen.org>
Signed-off-by: Imre Kaloz <kaloz@...nwrt.org>
---
 arch/powerpc/Makefile      |    3 ++-
 arch/powerpc/boot/Makefile |    6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 617dece..d85bb82 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -217,7 +217,8 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y)
 KBUILD_CFLAGS		+= -mno-sched-epilog
 endif
 
-cpu-as-$(CONFIG_4xx)		+= -Wa,-m405
+cpu-as-$(CONFIG_40x)		+= -Wa,-m405
+cpu-as-$(CONFIG_44x)		+= -Wa,-m440
 cpu-as-$(CONFIG_ALTIVEC)	+= $(call as-option,-Wa$(comma)-maltivec)
 cpu-as-$(CONFIG_E200)		+= -Wa,-me200
 
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 9d47f2e..5c2feaa 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -53,10 +53,10 @@ BOOTCFLAGS	+= -I$(objtree)/$(obj) -I$(srctree)/$(obj)
 DTC_FLAGS	?= -p 1024
 
 $(obj)/4xx.o: BOOTCFLAGS += -mcpu=405
-$(obj)/ebony.o: BOOTCFLAGS += -mcpu=405
+$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
 $(obj)/cuboot-hotfoot.o: BOOTCFLAGS += -mcpu=405
-$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=405
-$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405
+$(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=440
+$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=440
 $(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405
 $(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
 $(obj)/treeboot-iss4xx.o: BOOTCFLAGS += -mcpu=405
-- 
1.7.10.4