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Upstream doesn't optimize the kernel and bootwrappers for ppc44x because
they still want to support gcc 3.3 -- well, we don't.
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -189,7 +189,8 @@ 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-$(CONFIG_ALTIVEC) += -Wa,-maltivec
cpu-as-$(CONFIG_E200) += -Wa,-me200
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -39,10 +39,10 @@ BOOTCFLAGS += -I$(obj) -I$(srctree)/$(ob
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
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