| # 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 := $(call cc-option-yn, -m32) |
| |
| # Set default 32 bits cross compilers for vdso and boot wrapper |
| CROSS32_COMPILE ?= |
| |
| ifeq ($(HAS_BIARCH),y) |
| ifeq ($(CROSS32_COMPILE),) |
| ifdef CONFIG_PPC32 |
| # These options will be overridden by any -mcpu option that the CPU |
| # or platform code sets later on the command line, but they are needed |
| # to set a sane 32-bit cpu target for the 64-bit cross compiler which |
| # may default to the wrong ISA. |
| KBUILD_CFLAGS += -mcpu=powerpc |
| KBUILD_AFLAGS += -mcpu=powerpc |
| endif |
| endif |
| endif |
| |
| ifeq ($(CROSS_COMPILE),) |
| KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
| else |
| KBUILD_DEFCONFIG := ppc64_defconfig |
| endif |
| |
| ifdef CONFIG_PPC64 |
| 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 CONFIG_PPC64 |
| BITS := 64 |
| else |
| BITS := 32 |
| endif |
| |
| machine-y = ppc |
| machine-$(CONFIG_PPC64) += 64 |
| machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le |
| UTS_MACHINE := $(subst $(space),,$(machine-y)) |
| |
| # XXX This needs to be before we override LD below |
| ifdef CONFIG_PPC32 |
| KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
| else |
| KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/powerpc/kernel/module.lds |
| ifeq ($(call ld-ifversion, -ge, 225000000, y),y) |
| # Have the linker provide sfpr if possible. |
| # There is a corresponding test in arch/powerpc/lib/Makefile |
| KBUILD_LDFLAGS_MODULE += --save-restore-funcs |
| else |
| KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
| endif |
| endif |
| |
| ifdef CONFIG_CPU_LITTLE_ENDIAN |
| KBUILD_CFLAGS += -mlittle-endian |
| KBUILD_LDFLAGS += -EL |
| LDEMULATION := lppc |
| GNUTARGET := powerpcle |
| MULTIPLEWORD := -mno-multiple |
| KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect) |
| else |
| KBUILD_CFLAGS += $(call cc-option,-mbig-endian) |
| KBUILD_LDFLAGS += -EB |
| LDEMULATION := ppc |
| GNUTARGET := powerpc |
| MULTIPLEWORD := -mmultiple |
| endif |
| |
| ifdef CONFIG_PPC64 |
| cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) |
| cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc) |
| aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) |
| aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2 |
| endif |
| |
| ifndef CONFIG_CC_IS_CLANG |
| cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align |
| endif |
| |
| cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) |
| cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian |
| aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) |
| aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian |
| |
| ifeq ($(HAS_BIARCH),y) |
| KBUILD_CFLAGS += -m$(BITS) |
| KBUILD_AFLAGS += -m$(BITS) -Wl,-a$(BITS) |
| KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION) |
| KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET) |
| endif |
| |
| cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard=tls |
| ifdef CONFIG_PPC64 |
| cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r13 |
| else |
| cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r2 |
| endif |
| |
| LDFLAGS_vmlinux-y := -Bstatic |
| LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie |
| LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) |
| LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn) |
| |
| ifdef CONFIG_PPC64 |
| ifeq ($(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) := $(call cc-option,-mtraceback=no) |
| ifdef CONFIG_CPU_LITTLE_ENDIAN |
| CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) |
| AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) |
| else |
| CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) |
| CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc) |
| AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) |
| endif |
| CFLAGS-$(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 $(MULTIPLEWORD) |
| CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata) |
| |
| ifdef CONFIG_PPC_BOOK3S_64 |
| ifdef CONFIG_CPU_LITTLE_ENDIAN |
| CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8 |
| CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8) |
| else |
| CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5)) |
| CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4) |
| endif |
| else |
| CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 |
| endif |
| |
| ifdef CONFIG_FUNCTION_TRACER |
| CC_FLAGS_FTRACE := -pg |
| ifdef CONFIG_MPROFILE_KERNEL |
| CC_FLAGS_FTRACE += -mprofile-kernel |
| endif |
| # Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8 |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199 |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828 |
| ifndef CONFIG_CC_IS_CLANG |
| CC_FLAGS_FTRACE += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog) |
| endif |
| endif |
| |
| CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU)) |
| |
| # Altivec option not allowed with e500mc64 in GCC. |
| ifdef CONFIG_ALTIVEC |
| 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)) |
| |
| ifdef CONFIG_PPC32 |
| ifdef CONFIG_PPC_E500MC |
| CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) |
| else |
| CFLAGS-$(CONFIG_E500) += $(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 CONFIG_CPU_BIG_ENDIAN |
| CHECKFLAGS += -D__BIG_ENDIAN__ |
| else |
| CHECKFLAGS += -D__LITTLE_ENDIAN__ |
| endif |
| |
| ifdef CONFIG_476FPE_ERR46 |
| 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 += $(call cc-option,-mno-string) |
| |
| ifdef CONFIG_6xx |
| KBUILD_CFLAGS += -mcpu=powerpc |
| endif |
| |
| cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
| cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec) |
| cpu-as-$(CONFIG_E200) += -Wa,-me200 |
| cpu-as-$(CONFIG_E500) += -Wa,-me500 |
| |
| # When using '-many -mpower4' gas will first try and find a matching power4 |
| # mnemonic and failing that it will allow any valid mnemonic that GAS knows |
| # about. GCC will pass -many to GAS when assembling, clang does not. |
| cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4 -Wa,-many |
| cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc) |
| |
| 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-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o |
| head-$(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 |
| |
| # See arch/powerpc/Kbuild for content of core part of the kernel |
| core-y += arch/powerpc/ |
| |
| 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 |
| |
| $(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)/%,$@) |
| |
| # 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 += powernv_be_defconfig |
| powernv_be_defconfig: |
| $(call merge_into_defconfig,powernv_defconfig,be) |
| |
| 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) |
| |
| PHONY += ppc32_allmodconfig |
| ppc32_allmodconfig: |
| $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \ |
| -f $(srctree)/Makefile allmodconfig |
| |
| PHONY += ppc64le_allmodconfig |
| ppc64le_allmodconfig: |
| $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \ |
| -f $(srctree)/Makefile allmodconfig |
| |
| PHONY += ppc64_book3e_allmodconfig |
| ppc64_book3e_allmodconfig: |
| $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \ |
| -f $(srctree)/Makefile allmodconfig |
| |
| define archhelp |
| @echo '* zImage - Build default images selected by kernel config' |
| @echo ' zImage.* - Compressed kernel image (arch/$(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 $$(INSTALL_PATH) and run lilo' |
| @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
| @echo '' |
| @echo ' Targets with <dt> embed a device tree blob inside the image' |
| @echo ' These targets support board with firmware that does not' |
| @echo ' support passing a device tree directly. Replace <dt> with the' |
| @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' |
| @echo ' (minus the .dts extension).' |
| endef |
| |
| install: |
| $(Q)$(MAKE) $(build)=$(boot) install |
| |
| vdso_install: |
| ifdef CONFIG_PPC64 |
| $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
| endif |
| $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ |
| |
| archclean: |
| $(Q)$(MAKE) $(clean)=$(boot) |
| |
| archprepare: checkbin |
| |
| ifdef CONFIG_STACKPROTECTOR |
| prepare: stack_protector_prepare |
| |
| stack_protector_prepare: prepare0 |
| ifdef CONFIG_PPC64 |
| $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h)) |
| else |
| $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h)) |
| endif |
| endif |
| |
| # Check toolchain versions: |
| # - gcc-4.6 is the minimum kernel-wide version so nothing required. |
| checkbin: |
| @if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \ |
| && $(LD) --version | head -1 | grep ' 2\.24$$' >/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 |
