blob: 474ca35b1bce342356b27ac4118f133135d8c249 [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)
5 KBUILD_DEFCONFIG := i386_defconfig
6else
7 KBUILD_DEFCONFIG := $(ARCH)_defconfig
8endif
Sam Ravnborg2266cfd2007-10-25 20:31:19 +02009
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010010# BITS is used as extension for files which are available in a 32 bit
11# and a 64 bit version to simplify shared Makefiles.
12# e.g.: obj-y += foo_$(BITS).o
13export BITS
Sam Ravnborg74b469f2007-10-25 19:42:04 +020014
Sam Ravnborgd746d642007-11-12 20:14:19 +010015ifeq ($(CONFIG_X86_32),y)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010016 BITS := 32
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010017 UTS_MACHINE := i386
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010018 CHECKFLAGS += -D__i386__
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010019
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010020 biarch := $(call cc-option,-m32)
21 KBUILD_AFLAGS += $(biarch)
22 KBUILD_CFLAGS += $(biarch)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010023
24 ifdef CONFIG_RELOCATABLE
25 LDFLAGS_vmlinux := --emit-relocs
26 endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010027
28 KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
29
Andrew Boie484d90e2012-08-10 11:49:06 -070030 # Never want PIC in a 32-bit kernel, prevent breakage with GCC built
31 # with nonstandard options
32 KBUILD_CFLAGS += -fno-pic
33
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010034 # prevent gcc from keeping the stack 16 byte aligned
35 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
36
37 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
38 # a lot more stack due to the lack of sharing of stacklots:
Frans Popc7bd0412009-07-23 20:56:27 +020039 KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0400, \
40 $(call cc-option,-fno-unit-at-a-time))
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010041
42 # CPU-specific tuning. Anything which can be shared with UML should go here.
43 include $(srctree)/arch/x86/Makefile_32.cpu
44 KBUILD_CFLAGS += $(cflags-y)
45
46 # temporary until string.h is fixed
47 KBUILD_CFLAGS += -ffreestanding
Sam Ravnborg74b469f2007-10-25 19:42:04 +020048else
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010049 BITS := 64
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010050 UTS_MACHINE := x86_64
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010051 CHECKFLAGS += -D__x86_64__ -m64
52
53 KBUILD_AFLAGS += -m64
54 KBUILD_CFLAGS += -m64
55
H.J. Lud9b0cde92012-05-29 14:31:23 -070056 # Use -mpreferred-stack-boundary=3 if supported.
57 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mpreferred-stack-boundary=3)
58
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010059 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
60 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
61 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
62
63 cflags-$(CONFIG_MCORE2) += \
64 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
Tobias Doerffel366d19e2009-08-21 23:06:23 +020065 cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
66 $(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010067 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
68 KBUILD_CFLAGS += $(cflags-y)
69
70 KBUILD_CFLAGS += -mno-red-zone
71 KBUILD_CFLAGS += -mcmodel=kernel
72
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010073 # -funit-at-a-time shrinks the kernel .text considerably
74 # unfortunately it makes reading oopses harder.
75 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
76
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010077 # this works around some issues with generating unwind tables in older gccs
78 # newer gccs do it by default
79 KBUILD_CFLAGS += -maccumulate-outgoing-args
Tejun Heo5d707e92009-02-09 22:17:39 +090080endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010081
Tejun Heo5d707e92009-02-09 22:17:39 +090082ifdef CONFIG_CC_STACKPROTECTOR
83 cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
basile@opensource.dyc.edu08c2b392010-09-13 06:13:19 -040084 ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y)
Tejun Heo5d707e92009-02-09 22:17:39 +090085 stackp-y := -fstack-protector
Tejun Heo5d707e92009-02-09 22:17:39 +090086 KBUILD_CFLAGS += $(stackp-y)
87 else
88 $(warning stack protector enabled but no compiler support)
89 endif
Sam Ravnborg74b469f2007-10-25 19:42:04 +020090endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010091
H. Peter Anvin0bf62762012-02-27 14:09:10 -080092ifdef CONFIG_X86_X32
93 x32_ld_ok := $(call try-run,\
94 /bin/echo -e '1: .quad 1b' | \
95 $(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" - && \
96 $(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
97 $(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
Ingo Molnar8bd69c22012-02-28 10:35:06 +010098 ifeq ($(x32_ld_ok),y)
99 CONFIG_X86_X32_ABI := y
100 KBUILD_AFLAGS += -DCONFIG_X86_X32_ABI
101 KBUILD_CFLAGS += -DCONFIG_X86_X32_ABI
102 else
103 $(warning CONFIG_X86_X32 enabled but no binutils support)
104 endif
H. Peter Anvin0bf62762012-02-27 14:09:10 -0800105endif
106export CONFIG_X86_X32_ABI
107
Vegard Nossumdfec0722008-04-04 00:51:41 +0200108# Don't unroll struct assignments with kmemcheck enabled
109ifeq ($(CONFIG_KMEMCHECK),y)
110 KBUILD_CFLAGS += $(call cc-option,-fno-builtin-memcpy)
111endif
112
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100113# Stackpointer is addressed different for 32 bit and 64 bit x86
114sp-$(CONFIG_X86_32) := esp
115sp-$(CONFIG_X86_64) := rsp
116
117# do binutils support CFI?
118cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
119# is .cfi_signal_frame supported too?
120cfi-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 -0700121cfi-sections := $(call as-instr,.cfi_sections .debug_frame,-DCONFIG_AS_CFI_SECTIONS=1)
H. Peter Anvind7acb922010-10-13 16:00:29 -0700122
123# does binutils support specific instructions?
124asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
Jim Kukunasea4d26a2012-05-22 13:54:04 +1000125avx_instr := $(call as-instr,vxorps %ymm0$(comma)%ymm1$(comma)%ymm2,-DCONFIG_AS_AVX=1)
H. Peter Anvind7acb922010-10-13 16:00:29 -0700126
Jim Kukunasea4d26a2012-05-22 13:54:04 +1000127KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
128KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr) $(avx_instr)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100129
130LDFLAGS := -m elf_$(UTS_MACHINE)
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +0100131
132# Speed up the build
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100133KBUILD_CFLAGS += -pipe
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +0100134# Workaround for a gcc prelease that unfortunately was shipped in a suse release
135KBUILD_CFLAGS += -Wno-sign-compare
136#
137KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
138# prevent gcc from generating any FP code by mistake
139KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
Andi Kleenc0e9afc2012-03-28 11:51:17 -0700140KBUILD_CFLAGS += $(call cc-option,-mno-avx,)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100141
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100142KBUILD_CFLAGS += $(mflags-y)
143KBUILD_AFLAGS += $(mflags-y)
144
Jeff Mahoney24cc7fb2012-09-20 10:28:45 -0400145archscripts: scripts_basic
H. Peter Anvin6520fe52012-05-08 21:22:24 +0300146 $(Q)$(MAKE) $(build)=arch/x86/tools relocs
147
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100148###
H. Peter Anvin303395a2011-11-11 16:07:41 -0800149# Syscall table generation
150
151archheaders:
152 $(Q)$(MAKE) $(build)=arch/x86/syscalls all
153
154###
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100155# Kernel objects
156
Eric W. Biederman700efc12008-02-23 09:58:20 +0100157head-y := arch/x86/kernel/head_$(BITS).o
158head-y += arch/x86/kernel/head$(BITS).o
Huang, Ying0c51a962008-06-02 14:26:23 +0800159head-y += arch/x86/kernel/head.o
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100160
161libs-y += arch/x86/lib/
162
Sam Ravnborgd1f0ae52009-04-15 21:34:55 +0200163# See arch/x86/Kbuild for content of core part of the kernel
164core-y += arch/x86/
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100165
166# drivers-y are linked after core-y
167drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
168drivers-$(CONFIG_PCI) += arch/x86/pci/
169
170# must be linked after kernel/
171drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
172
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100173# suspend and hibernation support
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100174drivers-$(CONFIG_PM) += arch/x86/power/
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100175
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100176drivers-$(CONFIG_FB) += arch/x86/video/
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100177
178####
179# boot loader support. Several targets are kept for legacy purposes
180
181boot := arch/x86/boot
182
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700183BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700184
185PHONY += bzImage $(BOOT_TARGETS)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100186
187# Default kernel to build
188all: bzImage
189
190# KBUILD_IMAGE specify target image being built
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700191KBUILD_IMAGE := $(boot)/bzImage
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100192
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700193bzImage: vmlinux
Masami Hiramatsuca0e9ba2009-08-13 16:34:21 -0400194ifeq ($(CONFIG_X86_DECODER_SELFTEST),y)
195 $(Q)$(MAKE) $(build)=arch/x86/tools posttest
196endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100197 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
198 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
Jan Beulich41b3eae2008-04-22 16:29:26 +0100199 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100200
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700201$(BOOT_TARGETS): vmlinux
202 $(Q)$(MAKE) $(build)=$(boot) $@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100203
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700204PHONY += install
205install:
206 $(Q)$(MAKE) $(build)=$(boot) $@
207
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100208PHONY += vdso_install
209vdso_install:
210 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
211
212archclean:
213 $(Q)rm -rf $(objtree)/arch/i386
214 $(Q)rm -rf $(objtree)/arch/x86_64
215 $(Q)$(MAKE) $(clean)=$(boot)
Jarkko Sakkinenb2d668d2012-05-21 20:51:24 +0300216 $(Q)$(MAKE) $(clean)=arch/x86/tools
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100217
218define archhelp
Andi Kleen37f30e22008-01-30 13:32:49 +0100219 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
220 echo ' install - Install kernel using'
Sam Ravnborgcaa27b62009-07-20 21:37:11 +0200221 echo ' (your) ~/bin/$(INSTALLKERNEL) or'
222 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
Andi Kleen37f30e22008-01-30 13:32:49 +0100223 echo ' install to $$(INSTALL_PATH) and run lilo'
224 echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
225 echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
226 echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
227 echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
228 echo ' bzdisk/fdimage*/isoimage also accept:'
229 echo ' FDARGS="..." arguments for the booted kernel'
230 echo ' FDINITRD=file initrd for the booted kernel'
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100231endef