# 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 := $(shell uname -m)_defconfig else KBUILD_DEFCONFIG := ppc64_defconfig endif ifeq ($(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 := $(NM) --synthetic endif endif # BITS is used as extension for files which are available in a 32 bit # and a 64 bit version to simplify shared Makefiles. # e.g.: obj-y += foo_$(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)) ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) override LD += -EL LDEMULATION := lppc GNUTARGET := powerpcle MULTIPLEWORD := -mno-multiple KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect) else override LD += -EB LDEMULATION := ppc GNUTARGET := powerpc MULTIPLEWORD := -mmultiple endif cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian ifneq ($(cc-name),clang) cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align endif aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -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)-$(GNUTARGET) endif LDFLAGS_vmlinux-y := -Bstatic LDFLAGS_vmlinux-$(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) += $(call cc-option,-mtune=power7,-mtune=power4) CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power4 else CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 endif ifdef CONFIG_MPROFILE_KERNEL ifeq ($(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. $(warning Compiler does not support mprofile-kernel, set CONFIG_DISABLE_MPROFILE_KERNEL) CC_FLAGS_FTRACE := -mprofile-kernel-not-supported endif endif CFLAGS-$(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 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$(BITS)__ ifdef CONFIG_CPU_BIG_ENDIAN CHECKFLAGS += -D__BIG_ENDIAN__ else CHECKFLAGS += -D__LITTLE_ENDIAN__ endif KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o ifeq ($(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) += $(call as-option,-Wa$(comma)-maltivec) cpu-as-$(CONFIG_E200) += -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-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o head-$(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-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ core-$(CONFIG_KEXEC_FILE) += arch/powerpc/purgatory/ 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) $(build)=$(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 ($(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)