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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
30 # prevent gcc from keeping the stack 16 byte aligned
31 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
32
33 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
34 # a lot more stack due to the lack of sharing of stacklots:
35 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
36 echo $(call cc-option,-fno-unit-at-a-time); fi ;)
37
38 # CPU-specific tuning. Anything which can be shared with UML should go here.
39 include $(srctree)/arch/x86/Makefile_32.cpu
40 KBUILD_CFLAGS += $(cflags-y)
41
42 # temporary until string.h is fixed
43 KBUILD_CFLAGS += -ffreestanding
Sam Ravnborg74b469f2007-10-25 19:42:04 +020044else
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010045 BITS := 64
Andreas Herrmann8c6531f2007-11-19 23:58:57 +010046 UTS_MACHINE := x86_64
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010047 CHECKFLAGS += -D__x86_64__ -m64
48
49 KBUILD_AFLAGS += -m64
50 KBUILD_CFLAGS += -m64
51
52 # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu)
53 cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8)
54 cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona)
55
56 cflags-$(CONFIG_MCORE2) += \
57 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
58 cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
59 KBUILD_CFLAGS += $(cflags-y)
60
61 KBUILD_CFLAGS += -mno-red-zone
62 KBUILD_CFLAGS += -mcmodel=kernel
63
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010064 # -funit-at-a-time shrinks the kernel .text considerably
65 # unfortunately it makes reading oopses harder.
66 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
67
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010068 # this works around some issues with generating unwind tables in older gccs
69 # newer gccs do it by default
70 KBUILD_CFLAGS += -maccumulate-outgoing-args
71
72 stackp := $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh
73 stackp-$(CONFIG_CC_STACKPROTECTOR) := $(shell $(stackp) \
74 "$(CC)" -fstack-protector )
75 stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(stackp) \
76 "$(CC)" -fstack-protector-all )
77
78 KBUILD_CFLAGS += $(stackp-y)
Sam Ravnborg74b469f2007-10-25 19:42:04 +020079endif
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010080
81# Stackpointer is addressed different for 32 bit and 64 bit x86
82sp-$(CONFIG_X86_32) := esp
83sp-$(CONFIG_X86_64) := rsp
84
85# do binutils support CFI?
86cfi := $(call as-instr,.cfi_startproc\n.cfi_rel_offset $(sp-y)$(comma)0\n.cfi_endproc,-DCONFIG_AS_CFI=1)
87# is .cfi_signal_frame supported too?
88cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1)
89KBUILD_AFLAGS += $(cfi) $(cfi-sigframe)
90KBUILD_CFLAGS += $(cfi) $(cfi-sigframe)
91
92LDFLAGS := -m elf_$(UTS_MACHINE)
93OBJCOPYFLAGS := -O binary -R .note -R .comment -S
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +010094
95# Speed up the build
Sam Ravnborg0a6ef372008-01-30 13:32:20 +010096KBUILD_CFLAGS += -pipe
Sam Ravnborg25dfeeb2008-01-30 13:32:21 +010097# Workaround for a gcc prelease that unfortunately was shipped in a suse release
98KBUILD_CFLAGS += -Wno-sign-compare
99#
100KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
101# prevent gcc from generating any FP code by mistake
102KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,)
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100103
104###
105# Sub architecture support
106# fcore-y is linked before mcore-y files.
107
108# Default subarch .c files
109mcore-y := arch/x86/mach-default/
110
111# Voyager subarch support
112mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
113mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
114
115# VISWS subarch support
116mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
117mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws/
118
119# NUMAQ subarch support
120mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
121mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default/
122
123# BIGSMP subarch support
124mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
125mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default/
126
127#Summit subarch support
128mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
129mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default/
130
131# generic subarchitecture
132mflags-$(CONFIG_X86_GENERICARCH):= -Iinclude/asm-x86/mach-generic
133fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
134mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
135
136
137# ES7000 subarch support
138mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
139fcore-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
140mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default/
141
142# default subarch .h files
143mflags-y += -Iinclude/asm-x86/mach-default
144
145# 64 bit does not support subarch support - clear sub arch variables
146fcore-$(CONFIG_X86_64) :=
147mcore-$(CONFIG_X86_64) :=
148mflags-$(CONFIG_X86_64) :=
149
150KBUILD_CFLAGS += $(mflags-y)
151KBUILD_AFLAGS += $(mflags-y)
152
153###
154# Kernel objects
155
156head-y := arch/x86/kernel/head_$(BITS).o
157head-$(CONFIG_X86_64) += arch/x86/kernel/head64.o
158head-y += arch/x86/kernel/init_task.o
159
160libs-y += arch/x86/lib/
161
162# Sub architecture files that needs linking first
163core-y += $(fcore-y)
164
165# Xen paravirtualization support
166core-$(CONFIG_XEN) += arch/x86/xen/
167
168# lguest paravirtualization support
169core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
170
171core-y += arch/x86/kernel/
172core-y += arch/x86/mm/
173
174# Remaining sub architecture files
175core-y += $(mcore-y)
176
177core-y += arch/x86/crypto/
178core-y += arch/x86/vdso/
179core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/
180
181# drivers-y are linked after core-y
182drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
183drivers-$(CONFIG_PCI) += arch/x86/pci/
184
185# must be linked after kernel/
186drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
187
188ifeq ($(CONFIG_X86_32),y)
189drivers-$(CONFIG_PM) += arch/x86/power/
190drivers-$(CONFIG_FB) += arch/x86/video/
191endif
192
193####
194# boot loader support. Several targets are kept for legacy purposes
195
196boot := arch/x86/boot
197
198PHONY += zImage bzImage compressed zlilo bzlilo \
199 zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
200
201# Default kernel to build
202all: bzImage
203
204# KBUILD_IMAGE specify target image being built
205 KBUILD_IMAGE := $(boot)/bzImage
206zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
207
208zImage bzImage: vmlinux
209 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
210 $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot
211 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/bzImage
212
213compressed: zImage
214
215zlilo bzlilo: vmlinux
216 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
217
218zdisk bzdisk: vmlinux
219 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
220
221fdimage fdimage144 fdimage288 isoimage: vmlinux
222 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
223
224install: vdso_install
225 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
226
227PHONY += vdso_install
228vdso_install:
229 $(Q)$(MAKE) $(build)=arch/x86/vdso $@
230
231archclean:
232 $(Q)rm -rf $(objtree)/arch/i386
233 $(Q)rm -rf $(objtree)/arch/x86_64
234 $(Q)$(MAKE) $(clean)=$(boot)
235
236define archhelp
Andi Kleen37f30e22008-01-30 13:32:49 +0100237 echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'
238 echo ' install - Install kernel using'
239 echo ' (your) ~/bin/installkernel or'
240 echo ' (distribution) /sbin/installkernel or'
241 echo ' install to $$(INSTALL_PATH) and run lilo'
242 echo ' fdimage - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
243 echo ' fdimage144 - Create 1.4MB boot floppy image (arch/x86/boot/fdimage)'
244 echo ' fdimage288 - Create 2.8MB boot floppy image (arch/x86/boot/fdimage)'
245 echo ' isoimage - Create a boot CD-ROM image (arch/x86/boot/image.iso)'
246 echo ' bzdisk/fdimage*/isoimage also accept:'
247 echo ' FDARGS="..." arguments for the booted kernel'
248 echo ' FDINITRD=file initrd for the booted kernel'
Sam Ravnborg0a6ef372008-01-30 13:32:20 +0100249endef
250
251CLEAN_FILES += arch/x86/boot/fdimage \
252 arch/x86/boot/image.iso \
253 arch/x86/boot/mtools.conf