# 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) OLDARCH := 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 := $(NM) --synthetic endif else OLDARCH := ppc endif # It seems there are times we use this Makefile without # including the config file, but this replicates the old behaviour ifeq ($(CONFIG_WORD_SIZE),) CONFIG_WORD_SIZE := 32 endif UTS_MACHINE := $(OLDARCH) ifeq ($(HAS_BIARCH),y) override AS += -a$(CONFIG_WORD_SIZE) override LD += -m elf$(CONFIG_WORD_SIZE)ppc override CC += -m$(CONFIG_WORD_SIZE) override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR) endif LDFLAGS_vmlinux-yy := -Bstatic LDFLAGS_vmlinux-$(CONFIG_PPC64)$(CONFIG_RELOCATABLE) := -pie LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-yy) CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple KBUILD_CPPFLAGS += -Iarch/$(ARCH) KBUILD_AFLAGS += -Iarch/$(ARCH) KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) CPP = $(CC) -E $(KBUILD_CFLAGS) CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ ifeq ($(CONFIG_PPC64),y) GCC_BROKEN_VEC := $(call cc-ifversion, -lt, 0400, y) ifeq ($(CONFIG_POWER4_ONLY),y) ifeq ($(CONFIG_ALTIVEC),y) ifeq ($(GCC_BROKEN_VEC),y) KBUILD_CFLAGS += $(call cc-option,-mcpu=970) else KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) endif else KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) endif else KBUILD_CFLAGS += $(call cc-option,-mtune=power4) endif else LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o endif ifeq ($(CONFIG_TUNE_CELL),y) KBUILD_CFLAGS += $(call cc-option,-mtune=cell) endif # No AltiVec instruction when building kernel KBUILD_CFLAGS += $(call cc-option,-mno-altivec) # 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 += $(call cc-option,-funit-at-a-time) # Never use string load/store instructions as they are # often slow when they are implemented at all KBUILD_CFLAGS += -mno-string ifeq ($(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-$(CONFIG_6xx) += -Wa,-maltivec cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec cpu-as-$(CONFIG_E500) += -Wa,-me500 cpu-as-$(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-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o core-y += arch/powerpc/kernel/ \ arch/powerpc/mm/ \ arch/powerpc/lib/ \ arch/powerpc/sysdev/ \ arch/powerpc/platforms/ \ arch/powerpc/math-emu/ core-$(CONFIG_XMON) += arch/powerpc/xmon/ core-$(CONFIG_KVM) += arch/powerpc/kvm/ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ # Default to zImage, override when needed all: zImage CPPFLAGS_vmlinux.lds := -Upowerpc BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.% PHONY += $(BOOT_TARGETS) boot := arch/$(ARCH)/boot $(BOOT_TARGETS): vmlinux $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) bootwrapper_install %.dtb: $(Q)$(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.
- Backwards compatible U-Boot image for older' @echo ' versions which do not support device trees' @echo ' dtbImage.
- zImage with an embedded device tree blob' @echo ' simpleImage.
- Firmware independent image.' @echo ' treeImage.
- 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/$(ARCH)/configs' @echo '' @echo ' Targets with
embed a device tree blob inside the image' @echo ' These targets support board with firmware that does not' @echo ' support passing a device tree directly. Replace
with the' @echo ' name of a dts file from the arch/$(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 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec # instructions. # gcc-3.4 and binutils-2.14 are a fatal combination. checkbin: @if test "$(call 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 "$(call cc-fullversion)" = "040200" \ && test "x${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 ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ echo 'correctly with old versions of binutils.' ; \ echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ false ; \ fi CLEAN_FILES += $(TOUT)