[deliverable/linux.git] / arch / powerpc / Makefile

# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture.
#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
# Changes for PPC by Gary Thomas
# Rewritten by Cort Dougan and Paul Mackerras
#

HAS_BIARCH	:= $(call cc-option-yn, -m32)

# Set default 32 bits cross compilers for vdso and boot wrapper
CROSS32_COMPILE ?=

CROSS32CC		:= $(CROSS32_COMPILE)gcc
CROSS32AR		:= $(CROSS32_COMPILE)ar

ifeq ($(HAS_BIARCH),y)
ifeq ($(CROSS32_COMPILE),)
CROSS32CC	:= $(CC) -m32
CROSS32AR	:= GNUTARGET=elf32-powerpc $(AR)
endif
endif

export CROSS32CC CROSS32AR

ifeq ($(CROSS_COMPILE),)
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
else
KBUILD_DEFCONFIG := ppc64_defconfig
endif

ifeq ($(CONFIG_PPC64),y)
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)

ifeq ($(new_nm),y)
NM		:= $(NM) --synthetic
endif
endif

ifeq ($(CONFIG_PPC64),y)
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
OLDARCH	:= ppc64le
else
OLDARCH	:= ppc64
endif
else
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
OLDARCH	:= ppcle
else
OLDARCH	:= ppc
endif
endif

# It seems there are times we use this Makefile without
# including the config file, but this replicates the old behaviour
ifeq ($(CONFIG_WORD_SIZE),)
CONFIG_WORD_SIZE := 32
endif

UTS_MACHINE := $(OLDARCH)

ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
override CC	+= -mlittle-endian
ifneq ($(cc-name),clang)
override CC	+= -mno-strict-align
endif
override AS	+= -mlittle-endian
override LD	+= -EL
override CROSS32CC += -mlittle-endian
override CROSS32AS += -mlittle-endian
LDEMULATION	:= lppc
GNUTARGET	:= powerpcle
MULTIPLEWORD	:= -mno-multiple
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
else
ifeq ($(call cc-option-yn,-mbig-endian),y)
override CC	+= -mbig-endian
override AS	+= -mbig-endian
endif
override LD	+= -EB
LDEMULATION	:= ppc
GNUTARGET	:= powerpc
MULTIPLEWORD	:= -mmultiple
endif

ifeq ($(HAS_BIARCH),y)
override AS	+= -a$(CONFIG_WORD_SIZE)
override LD	+= -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION)
override CC	+= -m$(CONFIG_WORD_SIZE)
override AR	:= GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR)
endif

LDFLAGS_vmlinux-y := -Bstatic
LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
LDFLAGS_vmlinux	:= $(LDFLAGS_vmlinux-y)

ifeq ($(CONFIG_PPC64),y)
ifeq ($(call cc-option-yn,-mcmodel=medium),y)
	# -mcmodel=medium breaks modules because it uses 32bit offsets from
	# the TOC pointer to create pointers where possible. Pointers into the
	# percpu data area are created by this method.
	#
	# The kernel module loader relocates the percpu data section from the
	# original location (starting with 0xd...) to somewhere in the base
	# kernel percpu data space (starting with 0xc...). We need a full
	# 64bit relocation for this to work, hence -mcmodel=large.
	KBUILD_CFLAGS_MODULE += -mcmodel=large
else
	export NO_MINIMAL_TOC := -mno-minimal-toc
endif
endif

CFLAGS-$(CONFIG_PPC64)	:= $(call cc-option,-mtraceback=no)
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
AFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mabi=elfv2)
else
CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcall-aixdesc)
endif
CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mno-pointers-to-nested-functions)
CFLAGS-$(CONFIG_PPC32)	:= -ffixed-r2 $(MULTIPLEWORD)

ifeq ($(CONFIG_PPC_BOOK3S_64),y)
CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
else
CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
endif

CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8)

# Altivec option not allowed with e500mc64 in GCC.
ifeq ($(CONFIG_ALTIVEC),y)
E5500_CPU := -mcpu=powerpc64
else
E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
endif
CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))

ifeq ($(CONFIG_PPC32),y)
ifeq ($(CONFIG_PPC_E500MC),y)
CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
else
CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
endif
endif

CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)

asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)

KBUILD_CPPFLAGS	+= -Iarch/$(ARCH) $(asinstr)
KBUILD_AFLAGS	+= -Iarch/$(ARCH) $(AFLAGS-y)
KBUILD_CFLAGS	+= $(call cc-option,-msoft-float)
KBUILD_CFLAGS	+= -pipe -Iarch/$(ARCH) $(CFLAGS-y)
CPP		= $(CC) -E $(KBUILD_CFLAGS)

CHECKFLAGS	+= -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__

KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o

ifeq ($(CONFIG_476FPE_ERR46),y)
	KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
		-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
endif

# No AltiVec or VSX instructions when building kernel
KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
KBUILD_CFLAGS += $(call cc-option,-mno-vsx)

# No SPE instruction when building kernel
# (We use all available options to help semi-broken compilers)
KBUILD_CFLAGS += $(call cc-option,-mno-spe)
KBUILD_CFLAGS += $(call cc-option,-mspe=no)

# Enable unit-at-a-time mode when possible. It shrinks the
# kernel considerably.
KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)

# FIXME: the module load should be taught about the additional relocs
# generated by this.
# revert to pre-gcc-4.4 behaviour of .eh_frame
KBUILD_CFLAGS	+= $(call cc-option,-fno-dwarf2-cfi-asm)

# Never use string load/store instructions as they are
# often slow when they are implemented at all
KBUILD_CFLAGS		+= $(call cc-option,-mno-string)

ifeq ($(CONFIG_6xx),y)
KBUILD_CFLAGS		+= -mcpu=powerpc
endif

# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
ifeq ($(CONFIG_FUNCTION_TRACER),y)
KBUILD_CFLAGS		+= -mno-sched-epilog
endif

cpu-as-$(CONFIG_4xx)		+= -Wa,-m405
cpu-as-$(CONFIG_ALTIVEC)	+= -Wa,-maltivec
cpu-as-$(CONFIG_E200)		+= -Wa,-me200

KBUILD_AFLAGS += $(cpu-as-y)
KBUILD_CFLAGS += $(cpu-as-y)

head-y				:= arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
head-$(CONFIG_8xx)		:= arch/powerpc/kernel/head_8xx.o
head-$(CONFIG_40x)		:= arch/powerpc/kernel/head_40x.o
head-$(CONFIG_44x)		:= arch/powerpc/kernel/head_44x.o
head-$(CONFIG_FSL_BOOKE)	:= arch/powerpc/kernel/head_fsl_booke.o

head-$(CONFIG_PPC64)		+= arch/powerpc/kernel/entry_64.o
head-$(CONFIG_PPC_FPU)		+= arch/powerpc/kernel/fpu.o
head-$(CONFIG_ALTIVEC)		+= arch/powerpc/kernel/vector.o
head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE)  += arch/powerpc/kernel/prom_init.o

core-y				+= arch/powerpc/kernel/ \
				   arch/powerpc/mm/ \
				   arch/powerpc/lib/ \
				   arch/powerpc/sysdev/ \
				   arch/powerpc/platforms/ \
				   arch/powerpc/math-emu/ \
				   arch/powerpc/crypto/ \
				   arch/powerpc/net/
core-$(CONFIG_XMON)		+= arch/powerpc/xmon/
core-$(CONFIG_KVM) 		+= arch/powerpc/kvm/
core-$(CONFIG_PERF_EVENTS)	+= arch/powerpc/perf/

drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/

# Default to zImage, override when needed
all: zImage

# With make 3.82 we cannot mix normal and wildcard targets
BOOT_TARGETS1 := zImage zImage.initrd uImage
BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%

PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)

boot := arch/$(ARCH)/boot

ifeq ($(CONFIG_RELOCATABLE),y)
quiet_cmd_relocs_check = CALL    $<
      cmd_relocs_check = $(CONFIG_SHELL) $< "$(OBJDUMP)" "$(obj)/vmlinux"

PHONY += relocs_check
relocs_check: arch/powerpc/relocs_check.sh vmlinux
	$(call cmd,relocs_check)

zImage: relocs_check
endif

$(BOOT_TARGETS1): vmlinux
	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
$(BOOT_TARGETS2): vmlinux
	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)


bootwrapper_install:
	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)

%.dtb: scripts
	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)

# Used to create 'merged defconfigs'
# To use it $(call) it with the first argument as the base defconfig
# and the second argument as a space separated list of .config files to merge,
# without the .config suffix.
define merge_into_defconfig
	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
		-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
		$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
endef

PHONY += pseries_le_defconfig
pseries_le_defconfig:
	$(call merge_into_defconfig,pseries_defconfig,le)

PHONY += mpc85xx_defconfig
mpc85xx_defconfig:
	$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
		85xx-32bit 85xx-hw fsl-emb-nonhw)

PHONY += mpc85xx_smp_defconfig
mpc85xx_smp_defconfig:
	$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
		85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)

PHONY += corenet32_smp_defconfig
corenet32_smp_defconfig:
	$(call merge_into_defconfig,corenet_basic_defconfig,\
		85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)

PHONY += corenet64_smp_defconfig
corenet64_smp_defconfig:
	$(call merge_into_defconfig,corenet_basic_defconfig,\
		85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw)

define archhelp
  @echo '* zImage          - Build default images selected by kernel config'
  @echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
  @echo '  uImage          - U-Boot native image format'
  @echo '  cuImage.<dt>    - Backwards compatible U-Boot image for older'
  @echo '                    versions which do not support device trees'
  @echo '  dtbImage.<dt>   - zImage with an embedded device tree blob'
  @echo '  simpleImage.<dt> - Firmware independent image.'
  @echo '  treeImage.<dt>  - Support for older IBM 4xx firmware (not U-Boot)'
  @echo '  install         - Install kernel using'
  @echo '                    (your) ~/bin/$(INSTALLKERNEL) or'
  @echo '                    (distribution) /sbin/$(INSTALLKERNEL) or'
  @echo '                    install to $$(INSTALL_PATH) and run lilo'
  @echo '  *_defconfig     - Select default config from arch/$(ARCH)/configs'
  @echo ''
  @echo '  Targets with <dt> embed a device tree blob inside the image'
  @echo '  These targets support board with firmware that does not'
  @echo '  support passing a device tree directly.  Replace <dt> with the'
  @echo '  name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
  @echo '  (minus the .dts extension).'
endef

install:
	$(Q)$(MAKE) $(build)=$(boot) install

vdso_install:
ifeq ($(CONFIG_PPC64),y)
	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
endif
	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@

archclean:
	$(Q)$(MAKE) $(clean)=$(boot)

archprepare: checkbin

# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
# to stdout and these checks are run even on install targets.
TOUT	:= .tmp_gas_check

# Check gcc and binutils versions:
# - gcc-3.4 and binutils-2.14 are a fatal combination
# - Require gcc 4.0 or above on 64-bit
# - gcc-4.2.0 has issues compiling modules on 64-bit
checkbin:
	@if test "$(cc-name)" != "clang" \
	    && test "$(cc-version)" = "0304" ; then \
		if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
			echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
			echo 'correctly with gcc-3.4 and your version of binutils.'; \
			echo '*** Please upgrade your binutils or downgrade your gcc'; \
			false; \
		fi ; \
	fi
	@if test "$(cc-name)" != "clang" \
	    && test "$(cc-version)" -lt "0400" \
	    && test "x${CONFIG_PPC64}" = "xy" ; then \
                echo -n "Sorry, GCC v4.0 or above is required to build " ; \
                echo "the 64-bit powerpc kernel." ; \
                false ; \
        fi
	@if test "$(cc-name)" != "clang" \
	    && test "$(cc-fullversion)" = "040200" \
	    && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
		echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
		echo 'kernel with modules enabled.' ; \
		echo -n '*** Please use a different GCC version or ' ; \
		echo 'disable kernel modules' ; \
		false ; \
	fi
	@if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \
	    && $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \
		echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \
		echo 'in some circumstances.' ; \
		echo -n '*** Please use a different binutils version.' ; \
		false ; \
	fi


CLEAN_FILES += $(TOUT)
Commit	Line	Data
	1	# This file is included by the global makefile so that you can add your own
	2	# architecture-specific flags and dependencies. Remember to do have actions
	3	# for "archclean" and "archdep" for cleaning up and making dependencies for
	4	# this architecture.
	5	#
	6	# This file is subject to the terms and conditions of the GNU General Public
	7	# License. See the file "COPYING" in the main directory of this archive
	8	# for more details.
	9	#
	10	# Copyright (C) 1994 by Linus Torvalds
	11	# Changes for PPC by Gary Thomas
	12	# Rewritten by Cort Dougan and Paul Mackerras
	13	#
	14
	15	HAS_BIARCH := $(call cc-option-yn, -m32)
	16
	17	# Set default 32 bits cross compilers for vdso and boot wrapper
	18	CROSS32_COMPILE ?=
	19
	20	CROSS32CC := $(CROSS32_COMPILE)gcc
	21	CROSS32AR := $(CROSS32_COMPILE)ar
	22
	23	ifeq ($(HAS_BIARCH),y)
	24	ifeq ($(CROSS32_COMPILE),)
	25	CROSS32CC := $(CC) -m32
	26	CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
	27	endif
	28	endif
	29
	30	export CROSS32CC CROSS32AR
	31
	32	ifeq ($(CROSS_COMPILE),)
	33	KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
	34	else
	35	KBUILD_DEFCONFIG := ppc64_defconfig
	36	endif
	37
	38	ifeq ($(CONFIG_PPC64),y)
	39	new_nm := $(shell if $(NM) --help 2>&1 \| grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
	40
	41	ifeq ($(new_nm),y)
	42	NM := $(NM) --synthetic
	43	endif
	44	endif
	45
	46	ifeq ($(CONFIG_PPC64),y)
	47	ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
	48	OLDARCH := ppc64le
	49	else
	50	OLDARCH := ppc64
	51	endif
	52	else
	53	ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
	54	OLDARCH := ppcle
	55	else
	56	OLDARCH := ppc
	57	endif
	58	endif
	59
	60	# It seems there are times we use this Makefile without
	61	# including the config file, but this replicates the old behaviour
	62	ifeq ($(CONFIG_WORD_SIZE),)
	63	CONFIG_WORD_SIZE := 32
	64	endif
	65
	66	UTS_MACHINE := $(OLDARCH)
	67
	68	ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
	69	override CC += -mlittle-endian
	70	ifneq ($(cc-name),clang)
	71	override CC += -mno-strict-align
	72	endif
	73	override AS += -mlittle-endian
	74	override LD += -EL
	75	override CROSS32CC += -mlittle-endian
	76	override CROSS32AS += -mlittle-endian
	77	LDEMULATION := lppc
	78	GNUTARGET := powerpcle
	79	MULTIPLEWORD := -mno-multiple
	80	KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
	81	else
	82	ifeq ($(call cc-option-yn,-mbig-endian),y)
	83	override CC += -mbig-endian
	84	override AS += -mbig-endian
	85	endif
	86	override LD += -EB
	87	LDEMULATION := ppc
	88	GNUTARGET := powerpc
	89	MULTIPLEWORD := -mmultiple
	90	endif
	91
	92	ifeq ($(HAS_BIARCH),y)
	93	override AS += -a$(CONFIG_WORD_SIZE)
	94	override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION)
	95	override CC += -m$(CONFIG_WORD_SIZE)
	96	override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR)
	97	endif
	98
	99	LDFLAGS_vmlinux-y := -Bstatic
	100	LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
	101	LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
	102
	103	ifeq ($(CONFIG_PPC64),y)
	104	ifeq ($(call cc-option-yn,-mcmodel=medium),y)
	105	# -mcmodel=medium breaks modules because it uses 32bit offsets from
	106	# the TOC pointer to create pointers where possible. Pointers into the
	107	# percpu data area are created by this method.
	108	#
	109	# The kernel module loader relocates the percpu data section from the
	110	# original location (starting with 0xd...) to somewhere in the base
	111	# kernel percpu data space (starting with 0xc...). We need a full
	112	# 64bit relocation for this to work, hence -mcmodel=large.
	113	KBUILD_CFLAGS_MODULE += -mcmodel=large
	114	else
	115	export NO_MINIMAL_TOC := -mno-minimal-toc
	116	endif
	117	endif
	118
	119	CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
	120	ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
	121	CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
	122	AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
	123	else
	124	CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
	125	endif
	126	CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
	127	CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
	128	CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD)
	129
	130	ifeq ($(CONFIG_PPC_BOOK3S_64),y)
	131	CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
	132	else
	133	CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
	134	endif
	135
	136	CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
	137	CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
	138	CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
	139	CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
	140	CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
	141	CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8)
	142
	143	# Altivec option not allowed with e500mc64 in GCC.
	144	ifeq ($(CONFIG_ALTIVEC),y)
	145	E5500_CPU := -mcpu=powerpc64
	146	else
	147	E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
	148	endif
	149	CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
	150	CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
	151
	152	ifeq ($(CONFIG_PPC32),y)
	153	ifeq ($(CONFIG_PPC_E500MC),y)
	154	CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
	155	else
	156	CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
	157	endif
	158	endif
	159
	160	CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
	161
	162	asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
	163
	164	KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr)
	165	KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y)
	166	KBUILD_CFLAGS += $(call cc-option,-msoft-float)
	167	KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y)
	168	CPP = $(CC) -E $(KBUILD_CFLAGS)
	169
	170	CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
	171
	172	KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
	173
	174	ifeq ($(CONFIG_476FPE_ERR46),y)
	175	KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
	176	-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
	177	endif
	178
	179	# No AltiVec or VSX instructions when building kernel
	180	KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
	181	KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
	182
	183	# No SPE instruction when building kernel
	184	# (We use all available options to help semi-broken compilers)
	185	KBUILD_CFLAGS += $(call cc-option,-mno-spe)
	186	KBUILD_CFLAGS += $(call cc-option,-mspe=no)
	187
	188	# Enable unit-at-a-time mode when possible. It shrinks the
	189	# kernel considerably.
	190	KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
	191
	192	# FIXME: the module load should be taught about the additional relocs
	193	# generated by this.
	194	# revert to pre-gcc-4.4 behaviour of .eh_frame
	195	KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
	196
	197	# Never use string load/store instructions as they are
	198	# often slow when they are implemented at all
	199	KBUILD_CFLAGS += $(call cc-option,-mno-string)
	200
	201	ifeq ($(CONFIG_6xx),y)
	202	KBUILD_CFLAGS += -mcpu=powerpc
	203	endif
	204
	205	# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
	206	ifeq ($(CONFIG_FUNCTION_TRACER),y)
	207	KBUILD_CFLAGS += -mno-sched-epilog
	208	endif
	209
	210	cpu-as-$(CONFIG_4xx) += -Wa,-m405
	211	cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec
	212	cpu-as-$(CONFIG_E200) += -Wa,-me200
	213
	214	KBUILD_AFLAGS += $(cpu-as-y)
	215	KBUILD_CFLAGS += $(cpu-as-y)
	216
	217	head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
	218	head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
	219	head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
	220	head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
	221	head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
	222
	223	head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
	224	head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
	225	head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
	226	head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
	227
	228	core-y += arch/powerpc/kernel/ \
	229	arch/powerpc/mm/ \
	230	arch/powerpc/lib/ \
	231	arch/powerpc/sysdev/ \
	232	arch/powerpc/platforms/ \
	233	arch/powerpc/math-emu/ \
	234	arch/powerpc/crypto/ \
	235	arch/powerpc/net/
	236	core-$(CONFIG_XMON) += arch/powerpc/xmon/
	237	core-$(CONFIG_KVM) += arch/powerpc/kvm/
	238	core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/
	239
	240	drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
	241
	242	# Default to zImage, override when needed
	243	all: zImage
	244
	245	# With make 3.82 we cannot mix normal and wildcard targets
	246	BOOT_TARGETS1 := zImage zImage.initrd uImage
	247	BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
	248
	249	PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
	250
	251	boot := arch/$(ARCH)/boot
	252
	253	ifeq ($(CONFIG_RELOCATABLE),y)
	254	quiet_cmd_relocs_check = CALL $<
	255	cmd_relocs_check = $(CONFIG_SHELL) $< "$(OBJDUMP)" "$(obj)/vmlinux"
	256
	257	PHONY += relocs_check
	258	relocs_check: arch/powerpc/relocs_check.sh vmlinux
	259	$(call cmd,relocs_check)
	260
	261	zImage: relocs_check
	262	endif
	263
	264	$(BOOT_TARGETS1): vmlinux
	265	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
	266	$(BOOT_TARGETS2): vmlinux
	267	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
	268
	269
	270	bootwrapper_install:
	271	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
	272
	273	%.dtb: scripts
	274	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
	275
	276	# Used to create 'merged defconfigs'
	277	# To use it $(call) it with the first argument as the base defconfig
	278	# and the second argument as a space separated list of .config files to merge,
	279	# without the .config suffix.
	280	define merge_into_defconfig
	281	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
	282	-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
	283	$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
	284	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
	285	endef
	286
	287	PHONY += pseries_le_defconfig
	288	pseries_le_defconfig:
	289	$(call merge_into_defconfig,pseries_defconfig,le)
	290
	291	PHONY += mpc85xx_defconfig
	292	mpc85xx_defconfig:
	293	$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
	294	85xx-32bit 85xx-hw fsl-emb-nonhw)
	295
	296	PHONY += mpc85xx_smp_defconfig
	297	mpc85xx_smp_defconfig:
	298	$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
	299	85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
	300
	301	PHONY += corenet32_smp_defconfig
	302	corenet32_smp_defconfig:
	303	$(call merge_into_defconfig,corenet_basic_defconfig,\
	304	85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
	305
	306	PHONY += corenet64_smp_defconfig
	307	corenet64_smp_defconfig:
	308	$(call merge_into_defconfig,corenet_basic_defconfig,\
	309	85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw)
	310
	311	define archhelp
	312	@echo '* zImage - Build default images selected by kernel config'
	313	@echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
	314	@echo ' uImage - U-Boot native image format'
	315	@echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
	316	@echo ' versions which do not support device trees'
	317	@echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
	318	@echo ' simpleImage.<dt> - Firmware independent image.'
	319	@echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
	320	@echo ' install - Install kernel using'
	321	@echo ' (your) ~/bin/$(INSTALLKERNEL) or'
	322	@echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
	323	@echo ' install to $$(INSTALL_PATH) and run lilo'
	324	@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
	325	@echo ''
	326	@echo ' Targets with <dt> embed a device tree blob inside the image'
	327	@echo ' These targets support board with firmware that does not'
	328	@echo ' support passing a device tree directly. Replace <dt> with the'
	329	@echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
	330	@echo ' (minus the .dts extension).'
	331	endef
	332
	333	install:
	334	$(Q)$(MAKE) $(build)=$(boot) install
	335
	336	vdso_install:
	337	ifeq ($(CONFIG_PPC64),y)
	338	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
	339	endif
	340	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
	341
	342	archclean:
	343	$(Q)$(MAKE) $(clean)=$(boot)
	344
	345	archprepare: checkbin
	346
	347	# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
	348	# to stdout and these checks are run even on install targets.
	349	TOUT := .tmp_gas_check
	350
	351	# Check gcc and binutils versions:
	352	# - gcc-3.4 and binutils-2.14 are a fatal combination
	353	# - Require gcc 4.0 or above on 64-bit
	354	# - gcc-4.2.0 has issues compiling modules on 64-bit
	355	checkbin:
	356	@if test "$(cc-name)" != "clang" \
	357	&& test "$(cc-version)" = "0304" ; then \
	358	if ! /bin/echo mftb 5 \| $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
	359	echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
	360	echo 'correctly with gcc-3.4 and your version of binutils.'; \
	361	echo '*** Please upgrade your binutils or downgrade your gcc'; \
	362	false; \
	363	fi ; \
	364	fi
	365	@if test "$(cc-name)" != "clang" \
	366	&& test "$(cc-version)" -lt "0400" \
	367	&& test "x${CONFIG_PPC64}" = "xy" ; then \
	368	echo -n "Sorry, GCC v4.0 or above is required to build " ; \
	369	echo "the 64-bit powerpc kernel." ; \
	370	false ; \
	371	fi
	372	@if test "$(cc-name)" != "clang" \
	373	&& test "$(cc-fullversion)" = "040200" \
	374	&& test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
	375	echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
	376	echo 'kernel with modules enabled.' ; \
	377	echo -n '*** Please use a different GCC version or ' ; \
	378	echo 'disable kernel modules' ; \
	379	false ; \
	380	fi
	381	@if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \
	382	&& $(LD) --version \| head -1 \| grep ' 2\.24$$' >/dev/null ; then \
	383	echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \
	384	echo 'in some circumstances.' ; \
	385	echo -n '*** Please use a different binutils version.' ; \
	386	false ; \
	387	fi
	388
	389
	390	CLEAN_FILES += $(TOUT)
	391