blob: d3debde0ce0b3677afd9b93bccdb0bc35dc869b3 [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 Ravnborg0a6ef372008-01-30 13:32:20 +010018
19 HAS_BIARCH := $(call cc-option-yn, -m32)
20 ifeq ($(HAS_BIARCH),y)
21 AS := $(AS) --32
22 LD := $(LD) -m elf_i386
23 CC := $(CC) -m32
24 endif
25
26 ifdef CONFIG_RELOCATABLE
27 LDFLAGS_vmlinux := --emit-relocs
28 endif
29 CHECKFLAGS += -D__i386__
30
31 KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return
32
33 # prevent gcc from keeping the stack 16 byte aligned
34 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
35
36 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
37 # a lot more stack due to the lack of sharing of stacklots:
38 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
39 echo $(call cc-option,-fno-unit-at-a-time); fi ;)
40
41 # CPU-specific tuning. Anything which can be shared with UML should go here.
42 include $(srctree)/arch/x86/Makefile_32.cpu
43 KBUILD_CFLAGS += $(cflags-y)
44
45 # temporary until string.h is fixed
46 KBUILD_CFLAGS += -ffreestanding
Sam Ravnborg74b469f2007-10-25 19:42:04 +020047else
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010048 BITS := 64
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010049 UTS_MACHINE := x86_64
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010050 CHECKFLAGS += -D__x86_64__ -m64
51
52 KBUILD_AFLAGS += -m64
53 KBUILD_CFLAGS += -m64
54
55 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
56 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
57 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
58
59 cflags-$(CONFIG_MCORE2) += \
60 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
61 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
62 KBUILD_CFLAGS += $(cflags-y)
63
64 KBUILD_CFLAGS += -mno-red-zone
65 KBUILD_CFLAGS += -mcmodel=kernel
66
67 KBUILD_CFLAGS += -Wno-sign-compare
68 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
69 # -funit-at-a-time shrinks the kernel .text considerably
70 # unfortunately it makes reading oopses harder.
71 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
72
73 # prevent gcc from generating any FP code by mistake
74 KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
75 # this works around some issues with generating unwind tables in older gccs
76 # newer gccs do it by default
77 KBUILD_CFLAGS += -maccumulate-outgoing-args
78
79 stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
80 stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
81 "$(CC)" -fstack-protector )
82 stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
83 "$(CC)" -fstack-protector-all )
84
85 KBUILD_CFLAGS += $(stackp-y)
Sam Ravnborg74b469f2007-10-25 19:42:04 +020086endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010087
88# Stackpointer is addressed different for 32 bit and 64 bit x86
89sp-$(CONFIG_X86_32) := esp
90sp-$(CONFIG_X86_64) := rsp
91
92# do binutils support CFI?
93cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
94# is .cfi_signal_frame supported too?
95cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
96KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
97KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
98
99LDFLAGS := -m elf_$(UTS_MACHINE)
100OBJCOPYFLAGS := -O binary -R .note -R .comment -S
101KBUILD_CFLAGS += -pipe
102
103###
104# Sub architecture support
105# fcore-y is linked before mcore-y files.
106
107# Default subarch .c files
108mcore-y := arch/x86/mach-default/
109
110# Voyager subarch support
111mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
112mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
113
114# VISWS subarch support
115mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
116mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/
117
118# NUMAQ subarch support
119mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
120mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/
121
122# BIGSMP subarch support
123mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
124mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/
125
126#Summit subarch support
127mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
128mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/
129
130# generic subarchitecture
131mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
132fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
133mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
134
135
136# ES7000 subarch support
137mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
138fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
139mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/
140
141# default subarch .h files
142mflags-y += -Iinclude/asm-x86/mach-default
143
144# 64 bit does not support subarch support - clear sub arch variables
145fcore-$(CONFIG_X86_64) :=
146mcore-$(CONFIG_X86_64) :=
147mflags-$(CONFIG_X86_64) :=
148
149KBUILD_CFLAGS += $(mflags-y)
150KBUILD_AFLAGS += $(mflags-y)
151
152###
153# Kernel objects
154
155head-y := arch/x86/kernel/head_$(BITS).o
156head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
157head-y += arch/x86/kernel/init_task.o
158
159libs-y += arch/x86/lib/
160
161# Sub architecture files that needs linking first
162core-y += $(fcore-y)
163
164# Xen paravirtualization support
165core-$(CONFIG_XEN) += arch/x86/xen/
166
167# lguest paravirtualization support
168core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
169
170core-y += arch/x86/kernel/
171core-y += arch/x86/mm/
172
173# Remaining sub architecture files
174core-y += $(mcore-y)
175
176core-y += arch/x86/crypto/
177core-y += arch/x86/vdso/
178core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
179
180# drivers-y are linked after core-y
181drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
182drivers-$(CONFIG_PCI) += arch/x86/pci/
183
184# must be linked after kernel/
185drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
186
187ifeq ($(CONFIG_X86_32),y)
188drivers-$(CONFIG_PM) += arch/x86/power/
189drivers-$(CONFIG_FB) += arch/x86/video/
190endif
191
192####
193# boot loader support. Several targets are kept for legacy purposes
194
195boot := arch/x86/boot
196
197PHONY += zImage bzImage compressed zlilo bzlilo \
198 zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
199
200# Default kernel to build
201all: bzImage
202
203# KBUILD_IMAGE specify target image being built
204 KBUILD_IMAGE := $(boot)/bzImage
205zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
206
207zImage bzImage: vmlinux
208 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
209 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
210 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage
211
212compressed: zImage
213
214zlilo bzlilo: vmlinux
215 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
216
217zdisk bzdisk: vmlinux
218 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
219
220fdimage fdimage144 fdimage288 isoimage: vmlinux
221 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
222
223install: vdso_install
224 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
225
226PHONY += vdso_install
227vdso_install:
228 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
229
230archclean:
231 $(Q)rm -rf $(objtree)/arch/i386
232 $(Q)rm -rf $(objtree)/arch/x86_64
233 $(Q)$(MAKE) $(clean)=$(boot)
234
235define archhelp
236 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
237 echo ' install - Install kernel using'
238 echo ' (your) ~/bin/installkernel or'
239 echo ' (distribution) /sbin/installkernel or'
240 echo ' install to $$(INSTALL_PATH) and run lilo'
241 echo ' bzdisk - Create a boot floppy in /dev/fd0'
242 echo ' fdimage - Create a boot floppy image'
243 echo ' isoimage - Create a boot CD-ROM image'
244endef
245
246CLEAN_FILES += arch/x86/boot/fdimage \
247 arch/x86/boot/image.iso \
248 arch/x86/boot/mtools.conf