1 # Unified Makefile for i386 and x86_64
3 # select defconfig based on actual architecture
5 KBUILD_DEFCONFIG := i386_defconfig
7 KBUILD_DEFCONFIG := $(ARCH)_defconfig
10 core-$(CONFIG_KVM) += arch/x86/kvm/
12 # BITS is used as extension for files which are available in a 32 bit
13 # and a 64 bit version to simplify shared Makefiles.
14 # e.g.: obj-y += foo_$(BITS).o
17 ifeq ($(CONFIG_X86_32),y)
20 CHECKFLAGS += -D__i386__
22 biarch := $(call cc-option,-m32)
23 KBUILD_AFLAGS += $(biarch)
24 KBUILD_CFLAGS += $(biarch)
26 ifdef CONFIG_RELOCATABLE
27 LDFLAGS_vmlinux := --emit-relocs
30 KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
32 # prevent gcc from keeping the stack 16 byte aligned
33 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
35 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
36 # a lot more stack due to the lack of sharing of stacklots:
37 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
38 echo $(call cc-option,-fno-unit-at-a-time); fi ;)
40 # CPU-specific tuning. Anything which can be shared with UML should go here.
41 include $(srctree)/arch/x86/Makefile_32.cpu
42 KBUILD_CFLAGS += $(cflags-y)
44 # temporary until string.h is fixed
45 KBUILD_CFLAGS += -ffreestanding
49 CHECKFLAGS += -D__x86_64__ -m64
54 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
55 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
56 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
58 cflags-$(CONFIG_MCORE2) += \
59 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
60 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
61 KBUILD_CFLAGS += $(cflags-y)
63 KBUILD_CFLAGS += -mno-red-zone
64 KBUILD_CFLAGS += -mcmodel=kernel
66 # -funit-at-a-time shrinks the kernel .text considerably
67 # unfortunately it makes reading oopses harder.
68 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
70 # this works around some issues with generating unwind tables in older gccs
71 # newer gccs do it by default
72 KBUILD_CFLAGS += -maccumulate-outgoing-args
74 stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
75 stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
76 "$(CC)" -fstack-protector )
77 stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
78 "$(CC)" -fstack-protector-all )
80 KBUILD_CFLAGS += $(stackp-y)
83 # Stackpointer is addressed different for 32 bit and 64 bit x86
84 sp-$(CONFIG_X86_32) := esp
85 sp-$(CONFIG_X86_64) := rsp
87 # do binutils support CFI?
88 cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
89 # is .cfi_signal_frame supported too?
90 cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
91 KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
92 KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
94 LDFLAGS := -m elf_$(UTS_MACHINE)
97 KBUILD_CFLAGS += -pipe
98 # Workaround for a gcc prelease that unfortunately was shipped in a suse release
99 KBUILD_CFLAGS += -Wno-sign-compare
101 ifneq ($(CONFIG_UNWIND_INFO),y)
102 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
104 # prevent gcc from generating any FP code by mistake
105 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
108 # Sub architecture support
109 # fcore-y is linked before mcore-y files.
111 # Default subarch .c files
112 mcore-y := arch/x86/mach-default/
114 # Voyager subarch support
115 mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
116 mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
118 # VISWS subarch support
119 mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
120 mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/
122 # NUMAQ subarch support
123 mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
124 mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/
126 # BIGSMP subarch support
127 mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
128 mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/
130 #Summit subarch support
131 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
132 mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/
134 # Xen subarch support
135 mflags-$(CONFIG_X86_XEN) := -Iinclude/asm-x86/mach-xen
136 mcore-$(CONFIG_X86_XEN) := arch/x86/mach-xen/
138 # generic subarchitecture
139 mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
140 fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
141 mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
144 # ES7000 subarch support
145 mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
146 fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
147 mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/
149 # RDC R-321x subarch support
150 mflags-$(CONFIG_X86_RDC321X) := -Iinclude/asm-x86/mach-rdc321x
151 mcore-$(CONFIG_X86_RDC321X) := arch/x86/mach-default/
152 core-$(CONFIG_X86_RDC321X) += arch/x86/mach-rdc321x/
154 # default subarch .h files
155 mflags-y += -Iinclude/asm-x86/mach-default
157 # 64 bit does not support subarch support - clear sub arch variables
158 fcore-$(CONFIG_X86_64) :=
159 mcore-$(CONFIG_X86_64) :=
160 mflags-$(CONFIG_X86_64) :=
162 KBUILD_CFLAGS += $(mflags-y)
163 KBUILD_AFLAGS += $(mflags-y)
168 head-y := arch/x86/kernel/head_$(BITS).o
169 head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
170 head-y += arch/x86/kernel/init_task.o
172 libs-y += arch/x86/lib/
174 # Sub architecture files that needs linking first
177 # Xen paravirtualization support
178 core-$(CONFIG_PARAVIRT_XEN) += arch/x86/xen/
180 # lguest paravirtualization support
181 core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
183 core-y += arch/x86/kernel/
184 core-y += arch/x86/mm/
186 # Remaining sub architecture files
189 core-y += arch/x86/crypto/
190 core-y += arch/x86/vdso/
191 core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
193 # drivers-y are linked after core-y
194 drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
195 drivers-$(CONFIG_PCI) += arch/x86/pci/
197 # must be linked after kernel/
198 drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
200 # suspend and hibernation support
201 drivers-$(CONFIG_PM) += arch/x86/power/
203 ifeq ($(CONFIG_X86_32),y)
204 drivers-$(CONFIG_FB) += arch/x86/video/
208 drivers-$(CONFIG_KDB) += arch/x86/kdb/
211 # boot loader support. Several targets are kept for legacy purposes
213 boot := arch/x86/boot
215 PHONY += zImage bzImage vmlinuz compressed zlilo bzlilo \
216 zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
219 KBUILD_CPPFLAGS := -D__XEN_INTERFACE_VERSION__=$(CONFIG_XEN_INTERFACE_VERSION) \
220 -Iinclude$(if $(KBUILD_SRC),2)/asm/mach-xen $(KBUILD_CPPFLAGS)
223 LDFLAGS_vmlinux := -e startup_64
226 # Default kernel to build
229 # KBUILD_IMAGE specifies the target image being built
230 KBUILD_IMAGE := $(boot)/vmlinuz
233 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
234 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
235 $(Q)ln -fsn ../../x86/boot/$@ $(objtree)/arch/$(UTS_MACHINE)/boot/$@
237 # Default kernel to build
240 # KBUILD_IMAGE specify target image being built
241 KBUILD_IMAGE := $(boot)/bzImage
242 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
244 zImage bzImage: vmlinux
245 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
246 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
247 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage
251 zlilo bzlilo: vmlinux
252 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
254 zdisk bzdisk: vmlinux
255 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
257 fdimage fdimage144 fdimage288 isoimage: vmlinux
258 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
262 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
264 PHONY += vdso_install
266 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
269 $(Q)rm -rf $(objtree)/arch/i386
270 $(Q)rm -rf $(objtree)/arch/x86_64
271 $(Q)$(MAKE) $(clean)=$(boot)
274 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
275 echo ' install - Install kernel using'
276 echo ' (your) ~/bin/installkernel or'
277 echo ' (distribution) /sbin/installkernel or'
278 echo ' install to $$(INSTALL_PATH) and run lilo'
279 echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
280 echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
281 echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
282 echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
283 echo ' bzdisk/fdimage*/isoimage also accept:'
284 echo ' FDARGS="..." arguments for the booted kernel'
285 echo ' FDINITRD=file initrd for the booted kernel'
288 CLEAN_FILES += arch/x86/boot/fdimage \
289 arch/x86/boot/image.iso \
290 arch/x86/boot/mtools.conf