4 # This file is included by the global makefile so that you can add your own
5 # architecture-specific flags and dependencies. Remember to do have actions
6 # for "archclean" cleaning up for this architecture.
8 # This file is subject to the terms and conditions of the GNU General Public
9 # License. See the file "COPYING" in the main directory of this archive
12 # Copyright (C) 1994 by Linus Torvalds
14 # 19990713 Artur Skawina <skawina@geocities.com>
15 # Added '-march' and '-mpreferred-stack-boundary' support
17 # 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
18 # Added support for GEODE CPU
20 # BITS is used as extension for files which are available in a 32 bit
21 # and a 64 bit version to simplify shared Makefiles.
22 # e.g.: obj-y += foo_$(BITS).o
26 HAS_BIARCH := $(call cc-option-yn, -m32)
27 ifeq ($(HAS_BIARCH),y)
29 LD := $(LD) -m elf_i386
33 LDFLAGS := -m elf_i386
34 OBJCOPYFLAGS := -O binary -R .note -R .comment -S
35 ifdef CONFIG_RELOCATABLE
36 LDFLAGS_vmlinux := --emit-relocs
38 CHECKFLAGS += -D__i386__
40 KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
42 # prevent gcc from keeping the stack 16 byte aligned
43 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
45 # CPU-specific tuning. Anything which can be shared with UML should go here.
46 include $(srctree)/arch/x86/Makefile_32.cpu
48 # temporary until string.h is fixed
49 cflags-y += -ffreestanding
51 # this works around some issues with generating unwind tables in older gccs
52 # newer gccs do it by default
53 cflags-y += -maccumulate-outgoing-args
55 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
56 # a lot more stack due to the lack of sharing of stacklots:
57 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
59 # do binutils support CFI?
60 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
61 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
63 # is .cfi_signal_frame supported too?
64 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
65 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
67 KBUILD_CFLAGS += $(cflags-y)
69 # Default subarch .c files
70 mcore-y := arch/x86/mach-default
72 # Voyager subarch support
73 mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager
74 mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager
76 # VISWS subarch support
77 mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws
78 mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws
80 # NUMAQ subarch support
81 mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq
82 mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default
84 # BIGSMP subarch support
85 mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp
86 mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default
88 #Summit subarch support
89 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
90 mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default
92 # generic subarchitecture
93 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-x86/mach-generic
94 mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default
95 core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
97 # ES7000 subarch support
98 mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000
99 mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default
100 core-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/
102 # Xen paravirtualization support
103 core-$(CONFIG_XEN) += arch/x86/xen/
105 # lguest paravirtualization support
106 core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/
108 # default subarch .h files
109 mflags-y += -Iinclude/asm-x86/mach-default
111 head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task.o
113 libs-y += arch/x86/lib/
114 core-y += arch/x86/kernel/ \
118 drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
119 drivers-$(CONFIG_PCI) += arch/x86/pci/
120 # must be linked after kernel/
121 drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/
122 drivers-$(CONFIG_PM) += arch/x86/power/
123 drivers-$(CONFIG_FB) += arch/x86/video/
125 KBUILD_CFLAGS += $(mflags-y)
126 KBUILD_AFLAGS += $(mflags-y)
128 boot := arch/x86/boot
130 PHONY += zImage bzImage compressed zlilo bzlilo \
131 zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
135 # KBUILD_IMAGE specify target image being built
136 KBUILD_IMAGE := $(boot)/bzImage
137 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
139 zImage bzImage: vmlinux
140 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
141 $(Q)mkdir -p $(objtree)/arch/i386/boot
142 $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/i386/boot/bzImage
146 zlilo bzlilo: vmlinux
147 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
149 zdisk bzdisk: vmlinux
150 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
152 fdimage fdimage144 fdimage288 isoimage: vmlinux
153 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
156 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
159 $(Q)rm -rf $(objtree)/arch/i386/boot
160 $(Q)$(MAKE) $(clean)=arch/x86/boot
163 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
164 echo ' install - Install kernel using'
165 echo ' (your) ~/bin/installkernel or'
166 echo ' (distribution) /sbin/installkernel or'
167 echo ' install to $$(INSTALL_PATH) and run lilo'
168 echo ' bzdisk - Create a boot floppy in /dev/fd0'
169 echo ' fdimage - Create a boot floppy image'
170 echo ' isoimage - Create a boot CD-ROM image'
173 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
174 arch/$(ARCH)/boot/image.iso \
175 arch/$(ARCH)/boot/mtools.conf