Commit | Line | Data |
---|---|---|
74b469f2 SR |
1 | # Unified Makefile for i386 and x86_64 |
2 | ||
2266cfd5 | 3 | # select defconfig based on actual architecture |
d746d647 SR |
4 | ifeq ($(ARCH),x86) |
5 | KBUILD_DEFCONFIG := i386_defconfig | |
6 | else | |
7 | KBUILD_DEFCONFIG := $(ARCH)_defconfig | |
8 | endif | |
2266cfd5 | 9 | |
edf88417 AK |
10 | core-$(CONFIG_KVM) += arch/x86/kvm/ |
11 | ||
0a6ef376 SR |
12 | # 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_$(BITS).o | |
15 | export BITS | |
74b469f2 | 16 | |
d746d647 | 17 | ifeq ($(CONFIG_X86_32),y) |
0a6ef376 | 18 | BITS := 32 |
8c6531f7 | 19 | UTS_MACHINE := i386 |
4ba7e5cd | 20 | CHECKFLAGS += -D__i386__ |
0a6ef376 | 21 | |
4ba7e5cd SR |
22 | biarch := $(call cc-option,-m32) |
23 | KBUILD_AFLAGS += $(biarch) | |
24 | KBUILD_CFLAGS += $(biarch) | |
0a6ef376 SR |
25 | |
26 | ifdef CONFIG_RELOCATABLE | |
27 | LDFLAGS_vmlinux := --emit-relocs | |
28 | endif | |
0a6ef376 SR |
29 | |
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 += $(cflags-y) | |
43 | ||
44 | # temporary until string.h is fixed | |
45 | KBUILD_CFLAGS += -ffreestanding | |
74b469f2 | 46 | else |
0a6ef376 | 47 | BITS := 64 |
8c6531f7 | 48 | UTS_MACHINE := x86_64 |
0a6ef376 SR |
49 | CHECKFLAGS += -D__x86_64__ -m64 |
50 | ||
51 | KBUILD_AFLAGS += -m64 | |
52 | KBUILD_CFLAGS += -m64 | |
53 | ||
54 | # FIXME - should be integrated in Makefile.cpu (Makefile_32.cpu) | |
55 | cflags-$(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 | ||
0a6ef376 SR |
66 | # -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 | ||
0a6ef376 SR |
70 | # 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 | |
5d707e9c | 73 | endif |
0a6ef376 | 74 | |
5d707e9c TH |
75 | ifdef 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 | $(warning stack protector enabled but no compiler support) | |
83 | endif | |
0a6ef376 SR |
84 | endif |
85 | ||
86 | # Stackpointer is addressed different for 32 bit and 64 bit x86 | |
87 | sp-$(CONFIG_X86_32) := esp | |
88 | sp-$(CONFIG_X86_64) := rsp | |
89 | ||
90 | # do binutils support CFI? | |
91 | cfi := $(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? | |
93 | cfi-sigframe := $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1) | |
94 | KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) | |
95 | KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) | |
96 | ||
97 | LDFLAGS := -m elf_$(UTS_MACHINE) | |
25dfeeb7 SR |
98 | |
99 | # Speed up the build | |
0a6ef376 | 100 | KBUILD_CFLAGS += -pipe |
25dfeeb7 SR |
101 | # Workaround for a gcc prelease that unfortunately was shipped in a suse release |
102 | KBUILD_CFLAGS += -Wno-sign-compare | |
103 | # | |
104 | KBUILD_CFLAGS += -fno-asynchronous-unwind-tables | |
105 | # prevent gcc from generating any FP code by mistake | |
106 | KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) | |
0a6ef376 | 107 | |
0a6ef376 SR |
108 | KBUILD_CFLAGS += $(mflags-y) |
109 | KBUILD_AFLAGS += $(mflags-y) | |
110 | ||
111 | ### | |
112 | # Kernel objects | |
113 | ||
700efc1b EB |
114 | head-y := arch/x86/kernel/head_$(BITS).o |
115 | head-y += arch/x86/kernel/head$(BITS).o | |
0c51a965 | 116 | head-y += arch/x86/kernel/head.o |
700efc1b | 117 | head-y += arch/x86/kernel/init_task.o |
0a6ef376 SR |
118 | |
119 | libs-y += arch/x86/lib/ | |
120 | ||
121 | # Sub architecture files that needs linking first | |
122 | core-y += $(fcore-y) | |
123 | ||
124 | # Xen paravirtualization support | |
125 | core-$(CONFIG_XEN) += arch/x86/xen/ | |
126 | ||
127 | # lguest paravirtualization support | |
128 | core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/ | |
129 | ||
130 | core-y += arch/x86/kernel/ | |
131 | core-y += arch/x86/mm/ | |
132 | ||
0a6ef376 SR |
133 | core-y += arch/x86/crypto/ |
134 | core-y += arch/x86/vdso/ | |
135 | core-$(CONFIG_IA32_EMULATION) += arch/x86/ia32/ | |
136 | ||
137 | # drivers-y are linked after core-y | |
138 | drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/ | |
139 | drivers-$(CONFIG_PCI) += arch/x86/pci/ | |
140 | ||
141 | # must be linked after kernel/ | |
142 | drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ | |
143 | ||
cf7700fe | 144 | # suspend and hibernation support |
0a6ef376 | 145 | drivers-$(CONFIG_PM) += arch/x86/power/ |
cf7700fe RW |
146 | |
147 | ifeq ($(CONFIG_X86_32),y) | |
0a6ef376 | 148 | drivers-$(CONFIG_FB) += arch/x86/video/ |
74b469f2 | 149 | endif |
0a6ef376 SR |
150 | |
151 | #### | |
152 | # boot loader support. Several targets are kept for legacy purposes | |
153 | ||
154 | boot := arch/x86/boot | |
155 | ||
1648e4f8 | 156 | BOOT_TARGETS = bzlilo bzdisk fdimage fdimage144 fdimage288 isoimage |
f9c5107c PA |
157 | |
158 | PHONY += bzImage $(BOOT_TARGETS) | |
0a6ef376 SR |
159 | |
160 | # Default kernel to build | |
161 | all: bzImage | |
162 | ||
163 | # KBUILD_IMAGE specify target image being built | |
f9c5107c | 164 | KBUILD_IMAGE := $(boot)/bzImage |
0a6ef376 | 165 | |
f9c5107c | 166 | bzImage: vmlinux |
0a6ef376 SR |
167 | $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE) |
168 | $(Q)mkdir -p $(objtree)/arch/$(UTS_MACHINE)/boot | |
41b3eae6 | 169 | $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/$(UTS_MACHINE)/boot/$@ |
0a6ef376 | 170 | |
f9c5107c PA |
171 | $(BOOT_TARGETS): vmlinux |
172 | $(Q)$(MAKE) $(build)=$(boot) $@ | |
0a6ef376 | 173 | |
1648e4f8 PA |
174 | PHONY += install |
175 | install: | |
176 | $(Q)$(MAKE) $(build)=$(boot) $@ | |
177 | ||
0a6ef376 SR |
178 | PHONY += vdso_install |
179 | vdso_install: | |
180 | $(Q)$(MAKE) $(build)=arch/x86/vdso $@ | |
181 | ||
182 | archclean: | |
183 | $(Q)rm -rf $(objtree)/arch/i386 | |
184 | $(Q)rm -rf $(objtree)/arch/x86_64 | |
185 | $(Q)$(MAKE) $(clean)=$(boot) | |
186 | ||
187 | define archhelp | |
37f30e21 AK |
188 | 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' | |
0a6ef376 | 200 | endef |