| # Unified Makefile for i386 and x86_64 |
| |
| # select defconfig based on actual architecture |
| ifeq ($(ARCH),x86) |
| KBUILD_DEFCONFIG := i386_defconfig |
| else |
| KBUILD_DEFCONFIG := $(ARCH)_defconfig |
| endif |
| |
| core-$(CONFIG_KVM) += arch/x86/kvm/ |
| |
| # 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_$(BITS).o |
| export BITS |
| |
| ifeq ($(CONFIG_X86_32),y) |
| BITS := 32 |
| UTS_MACHINE := i386 |
| CHECKFLAGS += -D__i386__ |
| |
| biarch := $(call cc-option,-m32) |
| KBUILD_AFLAGS += $(biarch) |
| KBUILD_CFLAGS += $(biarch) |
| |
| ifdef CONFIG_RELOCATABLE |
| LDFLAGS_vmlinux := --emit-relocs |
| endif |
| |
| KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return |
| |
| # prevent gcc from keeping the stack 16 byte aligned |
| KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) |
| |
| # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use |
| # a lot more stack due to the lack of sharing of stacklots: |
| KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \ |
| echo $(call cc-option,-fno-unit-at-a-time); fi ;) |
| |
| # CPU-specific tuning. Anything which can be shared with UML should go here. |
| include $(srctree)/arch/x86/Makefile_32.cpu |
| KBUILD_CFLAGS += $(cflags-y) |
| |
| # temporary until string.h is fixed |
| KBUILD_CFLAGS += -ffreestanding |
| else |
| BITS := 64 |
| UTS_MACHINE := x86_64 |
| CHECKFLAGS += -D__x86_64__ -m64 |
| |
| KBUILD_AFLAGS += -m64 |
| KBUILD_CFLAGS += -m64 |
| |
| # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) |
| cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8) |
| cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) |
| |
| cflags-$(CONFIG_MCORE2) += \ |
| $(call cc-option,-march=core2,$(call cc-option,-mtune=generic)) |
| cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic) |
| KBUILD_CFLAGS += $(cflags-y) |
| |
| KBUILD_CFLAGS += -mno-red-zone |
| KBUILD_CFLAGS += -mcmodel=kernel |
| |
| # -funit-at-a-time shrinks the kernel .text considerably |
| # unfortunately it makes reading oopses harder. |
| KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
| |
| # this works around some issues with generating unwind tables in older gccs |
| # newer gccs do it by default |
| KBUILD_CFLAGS += -maccumulate-outgoing-args |
| endif |
| |
| ifdef CONFIG_CC_STACKPROTECTOR |
| cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh |
| ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC)),y) |
| stackp-y := -fstack-protector |
| stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all |
| KBUILD_CFLAGS += $(stackp-y) |
| else |
| $(warning stack protector enabled but no compiler support) |
| endif |
| endif |
| |
| # Stackpointer is addressed different for 32 bit and 64 bit x86 |
| sp-$(CONFIG_X86_32) := esp |
| sp-$(CONFIG_X86_64) := rsp |
| |
| # do binutils support CFI? |
| cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1) |
| # is .cfi_signal_frame supported too? |
| cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1) |
| KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) |
| KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) |
| |
| LDFLAGS := -m elf_$(UTS_MACHINE) |
| |
| # Speed up the build |
| KBUILD_CFLAGS += -pipe |
| # Workaround for a gcc prelease that unfortunately was shipped in a suse release |
| KBUILD_CFLAGS += -Wno-sign-compare |
| # |
| KBUILD_CFLAGS += -fno-asynchronous-unwind-tables |
| # prevent gcc from generating any FP code by mistake |
| KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) |
| |
| ### |
| # Sub architecture support |
| # fcore-y is linked before mcore-y files. |
| |
| # Default subarch .c files |
| mcore-y := arch/x86/mach-default/ |
| |
| # Voyager subarch support |
| mflags-$(CONFIG_X86_VOYAGER) := -Iarch/x86/include/asm/mach-voyager |
| mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/ |
| |
| # generic subarchitecture |
| mflags-$(CONFIG_X86_GENERICARCH):= -Iarch/x86/include/asm/mach-generic |
| fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/ |
| mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/ |
| |
| # default subarch .h files |
| mflags-y += -Iarch/x86/include/asm/mach-default |
| |
| # 64 bit does not support subarch support - clear sub arch variables |
| fcore-$(CONFIG_X86_64) := |
| mcore-$(CONFIG_X86_64) := |
| |
| KBUILD_CFLAGS += $(mflags-y) |
| KBUILD_AFLAGS += $(mflags-y) |
| |
| ### |
| # Kernel objects |
| |
| head-y := arch/x86/kernel/head_$(BITS).o |
| head-y += arch/x86/kernel/head$(BITS).o |
| head-y += arch/x86/kernel/head.o |
| head-y += arch/x86/kernel/init_task.o |
| |
| libs-y += arch/x86/lib/ |
| |
| # Sub architecture files that needs linking first |
| core-y += $(fcore-y) |
| |
| # Xen paravirtualization support |
| core-$(CONFIG_XEN) += arch/x86/xen/ |
| |
| # lguest paravirtualization support |
| core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/ |
| |
| core-y += arch/x86/kernel/ |
| core-y += arch/x86/mm/ |
| |
| # Remaining sub architecture files |
| core-y += $(mcore-y) |
| |
| core-y += arch/x86/crypto/ |
| core-y += arch/x86/vdso/ |
| core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/ |
| |
| # drivers-y are linked after core-y |
| drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/ |
| drivers-$(CONFIG_PCI) += arch/x86/pci/ |
| |
| # must be linked after kernel/ |
| drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ |
| |
| # suspend and hibernation support |
| drivers-$(CONFIG_PM) += arch/x86/power/ |
| |
| ifeq ($(CONFIG_X86_32),y) |
| drivers-$(CONFIG_FB) += arch/x86/video/ |
| endif |
| |
| #### |
| # boot loader support. Several targets are kept for legacy purposes |
| |
| boot := arch/x86/boot |
| |
| PHONY += zImage bzImage compressed zlilo bzlilo \ |
| zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install |
| |
| # Default kernel to build |
| all: bzImage |
| |
| # KBUILD_IMAGE specify target image being built |
| KBUILD_IMAGE := $(boot)/bzImage |
| zImage zlilo zdisk: KBUILD_IMAGE := $(boot)/zImage |
| |
| zImage bzImage: vmlinux |
| $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE) |
| $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot |
| $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@ |
| |
| compressed: zImage |
| |
| zlilo bzlilo: vmlinux |
| $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo |
| |
| zdisk bzdisk: vmlinux |
| $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk |
| |
| fdimage fdimage144 fdimage288 isoimage: vmlinux |
| $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@ |
| |
| install: |
| $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install |
| |
| PHONY += vdso_install |
| vdso_install: |
| $(Q)$(MAKE) $(build)=arch/x86/vdso $@ |
| |
| archclean: |
| $(Q)rm -rf $(objtree)/arch/i386 |
| $(Q)rm -rf $(objtree)/arch/x86_64 |
| $(Q)$(MAKE) $(clean)=$(boot) |
| |
| define archhelp |
| echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)' |
| echo ' install - Install kernel using' |
| echo ' (your) ~/bin/installkernel or' |
| echo ' (distribution) /sbin/installkernel or' |
| echo ' install to $$(INSTALL_PATH) and run lilo' |
| echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)' |
| echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)' |
| echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)' |
| echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)' |
| echo ' bzdisk/fdimage*/isoimage also accept:' |
| echo ' FDARGS="..." arguments for the booted kernel' |
| echo ' FDINITRD=file initrd for the booted kernel' |
| endef |
| |
| CLEAN_FILES += arch/x86/boot/fdimage \ |
| arch/x86/boot/image.iso \ |
| arch/x86/boot/mtools.conf |
