blob: 41250fb33985e179f63b399cfb6a2d10c93a4e29 [file] [log] [blame]
Sam Ravnborg74b469f2007-10-25 19:42:04 +02001# Unified Makefile for i386 and x86_64
2
Sam Ravnborg2266cfd2007-10-25 20:31:19 +02003# select defconfig based on actual architecture
Sam Ravnborgd746d642007-11-12 20:14:19 +01004ifeq ($(ARCH),x86)
David Woodhouseffee0de2012-12-20 21:51:55 +00005 ifeq ($(shell uname -m),x86_64)
6 KBUILD_DEFCONFIG := x86_64_defconfig
7 else
Sam Ravnborgd746d642007-11-12 20:14:19 +01008 KBUILD_DEFCONFIG := i386_defconfig
David Woodhouseffee0de2012-12-20 21:51:55 +00009 endif
Sam Ravnborgd746d642007-11-12 20:14:19 +010010else
11 KBUILD_DEFCONFIG := $(ARCH)_defconfig
12endif
Sam Ravnborg2266cfd2007-10-25 20:31:19 +020013
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010014# BITS is used as extension for files which are available in a 32 bit
15# and a 64 bit version to simplify shared Makefiles.
16# e.g.: obj-y += foo_$(BITS).o
17export BITS
Sam Ravnborg74b469f2007-10-25 19:42:04 +020018
Kees Cooka0215062013-07-08 09:15:17 -070019ifdef CONFIG_X86_NEED_RELOCS
20 LDFLAGS_vmlinux := --emit-relocs
21endif
22
Sam Ravnborgd746d642007-11-12 20:14:19 +010023ifeq ($(CONFIG_X86_32),y)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010024 BITS := 32
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010025 UTS_MACHINE := i386
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010026 CHECKFLAGS += -D__i386__
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010027
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010028 biarch := $(call cc-option,-m32)
29 KBUILD_AFLAGS += $(biarch)
30 KBUILD_CFLAGS += $(biarch)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010031
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010032 KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
33
Andrew Boie484d90e2012-08-10 11:49:06 -070034 # Never want PIC in a 32-bit kernel, prevent breakage with GCC built
35 # with nonstandard options
36 KBUILD_CFLAGS += -fno-pic
37
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010038 # prevent gcc from keeping the stack 16 byte aligned
39 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
40
41 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
42 # a lot more stack due to the lack of sharing of stacklots:
Frans Popc7bd0412009-07-23 20:56:27 +020043 KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \
44 $(call cc-option,-fno-unit-at-a-time))
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010045
46 # CPU-specific tuning. Anything which can be shared with UML should go here.
47 include $(srctree)/arch/x86/Makefile_32.cpu
48 KBUILD_CFLAGS += $(cflags-y)
49
50 # temporary until string.h is fixed
51 KBUILD_CFLAGS += -ffreestanding
Sam Ravnborg74b469f2007-10-25 19:42:04 +020052else
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010053 BITS := 64
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010054 UTS_MACHINE := x86_64
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010055 CHECKFLAGS += -D__x86_64__ -m64
56
57 KBUILD_AFLAGS += -m64
58 KBUILD_CFLAGS += -m64
59
H.J. Lud9b0cde92012-05-29 14:31:23 -070060 # Use -mpreferred-stack-boundary=3 if supported.
61 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mpreferred-stack-boundary=3)
62
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010063 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
64 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
65 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
66
67 cflags-$(CONFIG_MCORE2) += \
68 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
Tobias Doerffel366d19e2009-08-21 23:06:23 +020069 cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
70 $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010071 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
72 KBUILD_CFLAGS += $(cflags-y)
73
74 KBUILD_CFLAGS += -mno-red-zone
75 KBUILD_CFLAGS += -mcmodel=kernel
76
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010077 # -funit-at-a-time shrinks the kernel .text considerably
78 # unfortunately it makes reading oopses harder.
79 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
80
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010081 # this works around some issues with generating unwind tables in older gccs
82 # newer gccs do it by default
83 KBUILD_CFLAGS += -maccumulate-outgoing-args
Tejun Heo5d707e92009-02-09 22:17:39 +090084endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010085
Tejun Heo5d707e92009-02-09 22:17:39 +090086ifdef CONFIG_CC_STACKPROTECTOR
87 cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
basile@opensource.dyc.edu08c2b392010-09-13 06:13:19 -040088 ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y)
Tejun Heo5d707e92009-02-09 22:17:39 +090089 stackp-y := -fstack-protector
Tejun Heo5d707e92009-02-09 22:17:39 +090090 KBUILD_CFLAGS += $(stackp-y)
91 else
92 $(warning stack protector enabled but no compiler support)
93 endif
Sam Ravnborg74b469f2007-10-25 19:42:04 +020094endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010095
H. Peter Anvin0bf62762012-02-27 14:09:10 -080096ifdef CONFIG_X86_X32
97 x32_ld_ok := $(call try-run,\
98 /bin/echo -e '1: .quad 1b' | \
Jean Delvareb1e0d8b2012-10-02 16:42:36 +020099 $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" - && \
H. Peter Anvin0bf62762012-02-27 14:09:10 -0800100 $(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
101 $(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
Ingo Molnar8bd69c22012-02-28 10:35:06 +0100102 ifeq ($(x32_ld_ok),y)
103 CONFIG_X86_X32_ABI := y
104 KBUILD_AFLAGS += -DCONFIG_X86_X32_ABI
105 KBUILD_CFLAGS += -DCONFIG_X86_X32_ABI
106 else
107 $(warning CONFIG_X86_X32 enabled but no binutils support)
108 endif
H. Peter Anvin0bf62762012-02-27 14:09:10 -0800109endif
110export CONFIG_X86_X32_ABI
111
Vegard Nossumdfec0722008-04-04 00:51:41 +0200112# Don't unroll struct assignments with kmemcheck enabled
113ifeq ($(CONFIG_KMEMCHECK),y)
114 KBUILD_CFLAGS += $(call cc-option,-fno-builtin-memcpy)
115endif
116
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100117# Stackpointer is addressed different for 32 bit and 64 bit x86
118sp-$(CONFIG_X86_32) := esp
119sp-$(CONFIG_X86_64) := rsp
120
121# do binutils support CFI?
122cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
123# is .cfi_signal_frame supported too?
124cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
Roland McGrath9e565292010-05-13 21:43:03 -0700125cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1)
H. Peter Anvind7acb922010-10-13 16:00:29 -0700126
127# does binutils support specific instructions?
128asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
Jim Kukunasea4d26a2012-05-22 13:54:04 +1000129avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
Jim Kukunas70567412012-11-08 13:47:44 -0800130avx2_instr :=$(call as-instr,vpbroadcastb %xmm0$(comma)%ymm1,-DCONFIG_AS_AVX2=1)
H. Peter Anvind7acb922010-10-13 16:00:29 -0700131
Jim Kukunas70567412012-11-08 13:47:44 -0800132KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr)
133KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr) $(avx2_instr)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100134
135LDFLAGS := -m elf_$(UTS_MACHINE)
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +0100136
137# Speed up the build
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100138KBUILD_CFLAGS += -pipe
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +0100139# Workaround for a gcc prelease that unfortunately was shipped in a suse release
140KBUILD_CFLAGS += -Wno-sign-compare
141#
142KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
143# prevent gcc from generating any FP code by mistake
144KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
Andi Kleenc0e9afc2012-03-28 11:51:17 -0700145KBUILD_CFLAGS += $(call cc-option,-mno-avx,)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100146
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100147KBUILD_CFLAGS += $(mflags-y)
148KBUILD_AFLAGS += $(mflags-y)
149
Michal Marek3ce9e532012-10-15 21:16:56 +0200150archscripts: scripts_basic
H. Peter Anvin6520fe52012-05-08 21:22:24 +0300151 $(Q)$(MAKE) $(build)=arch/x86/tools relocs
152
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100153###
H. Peter Anvin303395a2011-11-11 16:07:41 -0800154# Syscall table generation
155
156archheaders:
157 $(Q)$(MAKE) $(build)=arch/x86/syscalls all
158
159###
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100160# Kernel objects
161
Eric W. Biederman700efc12008-02-23 09:58:20 +0100162head-y := arch/x86/kernel/head_$(BITS).o
163head-y += arch/x86/kernel/head$(BITS).o
Huang, Ying0c51a962008-06-02 14:26:23 +0800164head-y += arch/x86/kernel/head.o
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100165
166libs-y += arch/x86/lib/
167
Sam Ravnborgd1f0ae52009-04-15 21:34:55 +0200168# See arch/x86/Kbuild for content of core part of the kernel
169core-y += arch/x86/
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100170
171# drivers-y are linked after core-y
172drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
173drivers-$(CONFIG_PCI) += arch/x86/pci/
174
175# must be linked after kernel/
176drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
177
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100178# suspend and hibernation support
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100179drivers-$(CONFIG_PM) += arch/x86/power/
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100180
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100181drivers-$(CONFIG_FB) += arch/x86/video/
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100182
183####
184# boot loader support. Several targets are kept for legacy purposes
185
186boot := arch/x86/boot
187
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700188BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700189
190PHONY += bzImage $(BOOT_TARGETS)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100191
192# Default kernel to build
193all: bzImage
194
195# KBUILD_IMAGE specify target image being built
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700196KBUILD_IMAGE := $(boot)/bzImage
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100197
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700198bzImage: vmlinux
Masami Hiramatsuca0e9ba2009-08-13 16:34:21 -0400199ifeq ($(CONFIG_X86_DECODER_SELFTEST),y)
200 $(Q)$(MAKE) $(build)=arch/x86/tools posttest
201endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100202 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
203 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
Jan Beulich41b3eae2008-04-22 16:29:26 +0100204 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100205
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700206$(BOOT_TARGETS): vmlinux
207 $(Q)$(MAKE) $(build)=$(boot) $@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100208
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700209PHONY += install
210install:
211 $(Q)$(MAKE) $(build)=$(boot) $@
212
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100213PHONY += vdso_install
214vdso_install:
215 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
216
217archclean:
218 $(Q)rm -rf $(objtree)/arch/i386
219 $(Q)rm -rf $(objtree)/arch/x86_64
220 $(Q)$(MAKE) $(clean)=$(boot)
Jarkko Sakkinenb2d668d2012-05-21 20:51:24 +0300221 $(Q)$(MAKE) $(clean)=arch/x86/tools
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100222
Borislav Petkovfc58be72013-06-21 10:04:51 +0200223PHONY += kvmconfig
Borislav Petkov46ff5382013-05-22 16:46:39 +0200224kvmconfig:
225 $(if $(wildcard $(objtree)/.config),, $(error You need an existing .config for this target))
226 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m -O $(objtree) $(objtree)/.config arch/x86/configs/kvm_guest.config
227 $(Q)yes "" | $(MAKE) oldconfig
228
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100229define archhelp
Andi Kleen37f30e22008-01-30 13:32:49 +0100230 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
231 echo ' install - Install kernel using'
Sam Ravnborgcaa27b62009-07-20 21:37:11 +0200232 echo ' (your) ~/bin/$(INSTALLKERNEL) or'
233 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
Andi Kleen37f30e22008-01-30 13:32:49 +0100234 echo ' install to $$(INSTALL_PATH) and run lilo'
235 echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
236 echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
237 echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
238 echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
239 echo ' bzdisk/fdimage*/isoimage also accept:'
240 echo ' FDARGS="..." arguments for the booted kernel'
241 echo ' FDINITRD=file initrd for the booted kernel'
Borislav Petkov46ff5382013-05-22 16:46:39 +0200242 echo ' kvmconfig - Enable additional options for guest kernel support'
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100243endef