# 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 -mno-strict-align 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) := -mtraceback=no ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,-mcall-aixdesc) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) else CFLAGS-$(CONFIG_PPC64) += -mcall-aixdesc endif CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) CFLAGS-$(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) $(AFLAGS-y) KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(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 += $(call cc-option,-fno-dwarf2-cfi-asm) # Never use string load/store instructions as they are # often slow when they are implemented at all KBUILD_CFLAGS += -mno-string ifeq ($(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)/%,$@) define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.* - Compressed kernel image (arch/$(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-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 "$(cc-version)" -lt "0400" \ && test "x${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 "$(cc-fullversion)" = "040200" \ && test "x${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 CLEAN_FILES += $(TOUT)