# 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 := $(CC) -m32
KBUILD_ARFLAGS += --target=elf32-powerpc
endif
endif
export CROSS32CC CROSS32AR
ifeq ($(CROSS_COMPILE),)
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
else
KBUILD_DEFCONFIG := ppc64_defconfig
endif
ifeq ($([31mCONFIG_PPC64[0m),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 := $(NM) --synthetic
endif
endif
# BITS is used as extension for files which are available in a 32 bit
# and a 64 bit version to simplify shared Makefiles.
# e.g.: obj-y += foo_$(BITS).o
export BITS
ifdef [31mCONFIG_PPC64[0m
BITS := 64
else
BITS := 32
endif
machine-y = ppc
machine-$([31mCONFIG_PPC64[0m) += 64
machine-$([31mCONFIG_CPU_LITTLE_ENDIAN[0m) += le
UTS_MACHINE := $(subst $(space),,$(machine-y))
ifeq ($([31mCONFIG_CPU_LITTLE_ENDIAN[0m),y)
override LD += -EL
LDEMULATION := lppc
GNUTARGET := powerpcle
MULTIPLEWORD := -mno-multiple
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
else
override LD += -EB
LDEMULATION := ppc
GNUTARGET := powerpc
MULTIPLEWORD := -mmultiple
endif
cflags-$([31mCONFIG_CPU_BIG_ENDIAN[0m) += $(call cc-option,-mbig-endian)
cflags-$([31mCONFIG_CPU_LITTLE_ENDIAN[0m) += -mlittle-endian
ifneq ($(cc-name),clang)
cflags-$([31mCONFIG_CPU_LITTLE_ENDIAN[0m) += -mno-strict-align
endif
aflags-$([31mCONFIG_CPU_BIG_ENDIAN[0m) += $(call cc-option,-mbig-endian)
aflags-$([31mCONFIG_CPU_LITTLE_ENDIAN[0m) += -mlittle-endian
ifeq ($(HAS_BIARCH),y)
override AS += -a$(BITS)
override LD += -m elf$(BITS)$(LDEMULATION)
override CC += -m$(BITS)
KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET)
endif
LDFLAGS_vmlinux-y := -Bstatic
LDFLAGS_vmlinux-$([31mCONFIG_RELOCATABLE[0m) := -pie
LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
ifeq ($([31mCONFIG_PPC64[0m),y)
ifeq ($(call cc-option-yn,-mcmodel=medium),y)
# -mcmodel=medium breaks modules because it uses 32bit offsets from
# the TOC pointer to create pointers where possible. Pointers into the
# percpu data area are created by this method.
#
# The kernel module loader relocates the percpu data section from the
# original location (starting with 0xd...) to somewhere in the base
# kernel percpu data space (starting with 0xc...). We need a full
# 64bit relocation for this to work, hence -mcmodel=large.
KBUILD_CFLAGS_MODULE += -mcmodel=large
else
export NO_MINIMAL_TOC := -mno-minimal-toc
endif
endif
CFLAGS-$([31mCONFIG_PPC64[0m) := $(call cc-option,-mtraceback=no)
ifeq ($([31mCONFIG_CPU_LITTLE_ENDIAN[0m),y)
CFLAGS-$([31mCONFIG_PPC64[0m) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
AFLAGS-$([31mCONFIG_PPC64[0m) += $(call cc-option,-mabi=elfv2)
else
CFLAGS-$([31mCONFIG_PPC64[0m) += $(call cc-option,-mcall-aixdesc)
endif
CFLAGS-$([31mCONFIG_PPC64[0m) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
CFLAGS-$([31mCONFIG_PPC64[0m) += $(call cc-option,-mno-pointers-to-nested-functions)
CFLAGS-$([31mCONFIG_PPC32[0m) := -ffixed-r2 $(MULTIPLEWORD)
ifeq ($([31mCONFIG_PPC_BOOK3S_64[0m),y)
CFLAGS-$([31mCONFIG_GENERIC_CPU[0m) += $(call cc-option,-mtune=power7,-mtune=power4)
CFLAGS-$([31mCONFIG_GENERIC_CPU[0m) += -mcpu=power4
else
CFLAGS-$([31mCONFIG_GENERIC_CPU[0m) += -mcpu=powerpc64
endif
ifdef [31mCONFIG_MPROFILE_KERNEL[0m
ifeq ($(shell $(srctree)/arch/powerpc/scripts/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__),OK)
CC_FLAGS_FTRACE := -pg -mprofile-kernel
KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL
else
# If the user asked for mprofile-kernel but the toolchain doesn't
# support it, emit a warning and deliberately break the build later
# with mprofile-kernel-not-supported. We would prefer to make this an
# error right here, but then the user would never be able to run
# oldconfig to change their configuration.
$(warning Compiler does not support mprofile-kernel, set [31mCONFIG_DISABLE_MPROFILE_KERNEL[0m)
CC_FLAGS_FTRACE := -mprofile-kernel-not-supported
endif
endif
CFLAGS-$([31mCONFIG_CELL_CPU[0m) += $(call cc-option,-mcpu=cell)
CFLAGS-$([31mCONFIG_POWER4_CPU[0m) += $(call cc-option,-mcpu=power4)
CFLAGS-$([31mCONFIG_POWER5_CPU[0m) += $(call cc-option,-mcpu=power5)
CFLAGS-$([31mCONFIG_POWER6_CPU[0m) += $(call cc-option,-mcpu=power6)
CFLAGS-$([31mCONFIG_POWER7_CPU[0m) += $(call cc-option,-mcpu=power7)
CFLAGS-$([31mCONFIG_POWER8_CPU[0m) += $(call cc-option,-mcpu=power8)
# Altivec option not allowed with e500mc64 in GCC.
ifeq ($([31mCONFIG_ALTIVEC[0m),y)
E5500_CPU := -mcpu=powerpc64
else
E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
endif
CFLAGS-$([31mCONFIG_E5500_CPU[0m) += $(E5500_CPU)
CFLAGS-$([31mCONFIG_E6500_CPU[0m) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
ifeq ($([31mCONFIG_PPC32[0m),y)
ifeq ($([31mCONFIG_PPC_E500MC[0m),y)
CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
else
CFLAGS-$([31mCONFIG_E500[0m) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
endif
endif
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 $(KBUILD_CFLAGS)
CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
ifdef [31mCONFIG_CPU_BIG_ENDIAN[0m
CHECKFLAGS += -D__BIG_ENDIAN__
else
CHECKFLAGS += -D__LITTLE_ENDIAN__
endif
KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
ifeq ($([31mCONFIG_476FPE_ERR46[0m),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 += $(call cc-option,-mno-string)
ifeq ($([31mCONFIG_6xx[0m),y)
KBUILD_CFLAGS += -mcpu=powerpc
endif
# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
ifeq ($([31mCONFIG_FUNCTION_TRACER[0m),y)
KBUILD_CFLAGS += -mno-sched-epilog
endif
cpu-as-$([31mCONFIG_4xx[0m) += -Wa,-m405
cpu-as-$([31mCONFIG_ALTIVEC[0m) += $(call as-option,-Wa$(comma)-maltivec)
cpu-as-$([31mCONFIG_E200[0m) += -Wa,-me200
KBUILD_AFLAGS += $(cpu-as-y)
KBUILD_CFLAGS += $(cpu-as-y)
KBUILD_AFLAGS += $(aflags-y)
KBUILD_CFLAGS += $(cflags-y)
head-y := arch/powerpc/kernel/head_$(BITS).o
head-$([31mCONFIG_8xx[0m) := arch/powerpc/kernel/head_8xx.o
head-$([31mCONFIG_40x[0m) := arch/powerpc/kernel/head_40x.o
head-$([31mCONFIG_44x[0m) := arch/powerpc/kernel/head_44x.o
head-$([31mCONFIG_FSL_BOOKE[0m) := arch/powerpc/kernel/head_fsl_booke.o
head-$([31mCONFIG_PPC64[0m) += arch/powerpc/kernel/entry_64.o
head-$([31mCONFIG_PPC_FPU[0m) += arch/powerpc/kernel/fpu.o
head-$([31mCONFIG_ALTIVEC[0m) += arch/powerpc/kernel/vector.o
head-$([31mCONFIG_PPC_OF_BOOT_TRAMPOLINE[0m) += 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-$([31mCONFIG_XMON[0m) += arch/powerpc/xmon/
core-$([31mCONFIG_KVM[0m) += arch/powerpc/kvm/
core-$([31mCONFIG_PERF_EVENTS[0m) += arch/powerpc/perf/
core-$([31mCONFIG_KEXEC_FILE[0m) += arch/powerpc/purgatory/
drivers-$([31mCONFIG_OPROFILE[0m) += 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 ($([31mCONFIG_RELOCATABLE[0m),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) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
$(BOOT_TARGETS2): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
bootwrapper_install:
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
%.dtb: scripts
$(Q)$(MAKE) $(build)=$(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 += ppc64le_defconfig
ppc64le_defconfig:
$(call merge_into_defconfig,ppc64_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 dpaa)
PHONY += corenet64_smp_defconfig
corenet64_smp_defconfig:
$(call merge_into_defconfig,corenet_basic_defconfig,\
85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
PHONY += mpc86xx_defconfig
mpc86xx_defconfig:
$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
86xx-hw fsl-emb-nonhw)
PHONY += mpc86xx_smp_defconfig
mpc86xx_smp_defconfig:
$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
86xx-smp 86xx-hw fsl-emb-nonhw)
define archhelp
@echo '* zImage - Build default images selected by kernel config'
@echo ' zImage.* - Compressed kernel image (arch/$(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 ($([31mCONFIG_PPC64[0m),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)