blob: 8c86b72afdc2d39bc8957692e35335ebabae82bc [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 := $(ARCH)_defconfig
8endif
Sam Ravnborg2266cfd2007-10-25 20:31:19 +02009
Avi Kivityedf88412007-12-16 11:02:48 +020010core-$(CONFIG_KVM) += arch/x86/kvm/
11
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010012# 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_$(BITS).o
15export BITS
Sam Ravnborg74b469f2007-10-25 19:42:04 +020016
Sam Ravnborgd746d642007-11-12 20:14:19 +010017ifeq ($(CONFIG_X86_32),y)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010018 BITS := 32
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010019 UTS_MACHINE := i386
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010020 CHECKFLAGS += -D__i386__
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010021
Sam Ravnborg4ba7e5c2008-01-30 13:32:23 +010022 biarch := $(call cc-option,-m32)
23 KBUILD_AFLAGS += $(biarch)
24 KBUILD_CFLAGS += $(biarch)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010025
26 ifdef CONFIG_RELOCATABLE
27 LDFLAGS_vmlinux := --emit-relocs
28 endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010029
30 KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
31
32 # prevent gcc from keeping the stack 16 byte aligned
33 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
34
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 ;)
39
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 += $(cflags-y)
43
44 # temporary until string.h is fixed
45 KBUILD_CFLAGS += -ffreestanding
Sam Ravnborg74b469f2007-10-25 19:42:04 +020046else
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010047 BITS := 64
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010048 UTS_MACHINE := x86_64
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010049 CHECKFLAGS += -D__x86_64__ -m64
50
51 KBUILD_AFLAGS += -m64
52 KBUILD_CFLAGS += -m64
53
54 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
55 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
56 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
57
58 cflags-$(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)
62
63 KBUILD_CFLAGS += -mno-red-zone
64 KBUILD_CFLAGS += -mcmodel=kernel
65
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010066 # -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)
69
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010070 # 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
Tejun Heo5d707e92009-02-09 22:17:39 +090073endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010074
Tejun Heo5d707e92009-02-09 22:17:39 +090075ifdef CONFIG_CC_STACKPROTECTOR
76 cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
77 ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC)),y)
78 stackp-y := -fstack-protector
79 stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all
80 KBUILD_CFLAGS += $(stackp-y)
81 else
82 $(warning stack protector enabled but no compiler support)
83 endif
Sam Ravnborg74b469f2007-10-25 19:42:04 +020084endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010085
86# Stackpointer is addressed different for 32 bit and 64 bit x86
87sp-$(CONFIG_X86_32) := esp
88sp-$(CONFIG_X86_64) := rsp
89
90# do binutils support CFI?
91cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
92# is .cfi_signal_frame supported too?
93cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
94KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
95KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
96
97LDFLAGS := -m elf_$(UTS_MACHINE)
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +010098
99# Speed up the build
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100100KBUILD_CFLAGS += -pipe
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +0100101# Workaround for a gcc prelease that unfortunately was shipped in a suse release
102KBUILD_CFLAGS += -Wno-sign-compare
103#
104KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
105# prevent gcc from generating any FP code by mistake
106KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100107
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100108KBUILD_CFLAGS += $(mflags-y)
109KBUILD_AFLAGS += $(mflags-y)
110
111###
112# Kernel objects
113
Eric W. Biederman700efc12008-02-23 09:58:20 +0100114head-y := arch/x86/kernel/head_$(BITS).o
115head-y += arch/x86/kernel/head$(BITS).o
Huang, Ying0c51a962008-06-02 14:26:23 +0800116head-y += arch/x86/kernel/head.o
Eric W. Biederman700efc12008-02-23 09:58:20 +0100117head-y += arch/x86/kernel/init_task.o
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100118
119libs-y += arch/x86/lib/
120
121# Sub architecture files that needs linking first
122core-y += $(fcore-y)
123
124# Xen paravirtualization support
125core-$(CONFIG_XEN) += arch/x86/xen/
126
127# lguest paravirtualization support
128core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
129
130core-y += arch/x86/kernel/
131core-y += arch/x86/mm/
132
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100133core-y += arch/x86/crypto/
134core-y += arch/x86/vdso/
135core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
136
137# drivers-y are linked after core-y
138drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
139drivers-$(CONFIG_PCI) += arch/x86/pci/
140
141# must be linked after kernel/
142drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
143
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100144# suspend and hibernation support
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100145drivers-$(CONFIG_PM) += arch/x86/power/
Rafael J. Wysockicf7700f2008-02-09 23:24:09 +0100146
147ifeq ($(CONFIG_X86_32),y)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100148drivers-$(CONFIG_FB) += arch/x86/video/
149endif
150
151####
152# boot loader support. Several targets are kept for legacy purposes
153
154boot := arch/x86/boot
155
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700156BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700157
158PHONY += bzImage $(BOOT_TARGETS)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100159
160# Default kernel to build
161all: bzImage
162
163# KBUILD_IMAGE specify target image being built
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700164KBUILD_IMAGE := $(boot)/bzImage
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100165
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700166bzImage: vmlinux
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100167 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
168 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
Jan Beulich41b3eae2008-04-22 16:29:26 +0100169 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100170
H. Peter Anvinf9c51072009-03-12 12:50:33 -0700171$(BOOT_TARGETS): vmlinux
172 $(Q)$(MAKE) $(build)=$(boot) $@
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100173
H. Peter Anvin1648e4f2009-04-17 10:46:37 -0700174PHONY += install
175install:
176 $(Q)$(MAKE) $(build)=$(boot) $@
177
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100178PHONY += vdso_install
179vdso_install:
180 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
181
182archclean:
183 $(Q)rm -rf $(objtree)/arch/i386
184 $(Q)rm -rf $(objtree)/arch/x86_64
185 $(Q)$(MAKE) $(clean)=$(boot)
186
187define archhelp
Andi Kleen37f30e22008-01-30 13:32:49 +0100188 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
189 echo ' install - Install kernel using'
190 echo ' (your) ~/bin/installkernel or'
191 echo ' (distribution) /sbin/installkernel or'
192 echo ' install to $$(INSTALL_PATH) and run lilo'
193 echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
194 echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
195 echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
196 echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
197 echo ' bzdisk/fdimage*/isoimage also accept:'
198 echo ' FDARGS="..." arguments for the booted kernel'
199 echo ' FDINITRD=file initrd for the booted kernel'
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100200endef