| # 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 |
| CROSS32AS := $(CROSS32_COMPILE)as |
| CROSS32LD := $(CROSS32_COMPILE)ld |
| CROSS32AR := $(CROSS32_COMPILE)ar |
| CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy |
| |
| ifeq ($(HAS_BIARCH),y) |
| ifeq ($(CROSS32_COMPILE),) |
| CROSS32CC := $(CC) -m32 |
| CROSS32AS := $(AS) -a32 |
| CROSS32LD := $(LD) -m elf32ppc |
| CROSS32OBJCOPY := $(OBJCOPY) |
| CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
| endif |
| endif |
| |
| export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY |
| |
| ifeq ($(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 $(AR) |
| endif |
| |
| LDFLAGS_vmlinux := -Bstatic |
| |
| CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) |
| AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) |
| CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc |
| CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple |
| KBUILD_CPPFLAGS += $(CPPFLAGS-y) |
| KBUILD_AFLAGS += $(AFLAGS-y) |
| KBUILD_CFLAGS += -msoft-float -pipe $(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 := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi) |
| |
| ifeq ($(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 += $(call cc-option,-mtune=power4) |
| endif |
| endif |
| |
| ifeq ($(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) |
| |
| # 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 |
| |
| 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 |
| |
| core-y += arch/powerpc/kernel/ \ |
| arch/powerpc/mm/ \ |
| arch/powerpc/lib/ \ |
| arch/powerpc/sysdev/ \ |
| arch/powerpc/platforms/ |
| core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/ |
| core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
| |
| drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ |
| |
| # Default to zImage, override when needed |
| defaultimage-y := zImage |
| defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage |
| KBUILD_IMAGE := $(defaultimage-y) |
| all: $(KBUILD_IMAGE) |
| |
| CPPFLAGS_vmlinux.lds := -Upowerpc |
| |
| BOOT_TARGETS = zImage zImage.initrd uImage |
| |
| PHONY += $(BOOT_TARGETS) |
| |
| boot := arch/$(ARCH)/boot |
| |
| $(BOOT_TARGETS): vmlinux |
| $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| |
| define archhelp |
| @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' |
| @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' |
| endef |
| |
| install: vdso_install |
| $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install |
| |
| vdso_install: |
| ifeq ($(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) |
| |