1# 2# i386 Makefile 3# 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. 7# 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 10# for more details. 11# 12# Copyright (C) 1994 by Linus Torvalds 13# 14# 19990713 Artur Skawina <skawina@geocities.com> 15# Added '-march' and '-mpreferred-stack-boundary' support 16# 17# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net> 18# Added support for GEODE CPU 19 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 23BITS := 32 24export BITS 25 26HAS_BIARCH := $(call cc-option-yn, -m32) 27ifeq ($(HAS_BIARCH),y) 28AS := $(AS) --32 29LD := $(LD) -m elf_i386 30CC := $(CC) -m32 31endif 32 33LDFLAGS := -m elf_i386 34OBJCOPYFLAGS := -O binary -R .note -R .comment -S 35ifdef CONFIG_RELOCATABLE 36LDFLAGS_vmlinux := --emit-relocs 37endif 38CHECKFLAGS += -D__i386__ 39 40KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return 41 42# prevent gcc from keeping the stack 16 byte aligned 43KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) 44 45# CPU-specific tuning. Anything which can be shared with UML should go here. 46include $(srctree)/arch/x86/Makefile_32.cpu 47 48# temporary until string.h is fixed 49cflags-y += -ffreestanding 50 51# this works around some issues with generating unwind tables in older gccs 52# newer gccs do it by default 53cflags-y += -maccumulate-outgoing-args 54 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: 57KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;) 58 59# do binutils support CFI? 60cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,) 61KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,) 62 63# is .cfi_signal_frame supported too? 64cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) 65KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) 66 67KBUILD_CFLAGS += $(cflags-y) 68 69# Default subarch .c files 70mcore-y := arch/x86/mach-default 71 72# Voyager subarch support 73mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-x86/mach-voyager 74mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager 75 76# VISWS subarch support 77mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-x86/mach-visws 78mcore-$(CONFIG_X86_VISWS) := arch/x86/mach-visws 79 80# NUMAQ subarch support 81mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-x86/mach-numaq 82mcore-$(CONFIG_X86_NUMAQ) := arch/x86/mach-default 83 84# BIGSMP subarch support 85mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-x86/mach-bigsmp 86mcore-$(CONFIG_X86_BIGSMP) := arch/x86/mach-default 87 88#Summit subarch support 89mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit 90mcore-$(CONFIG_X86_SUMMIT) := arch/x86/mach-default 91 92# generic subarchitecture 93mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-x86/mach-generic 94mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default 95core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/ 96 97# ES7000 subarch support 98mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-x86/mach-es7000 99mcore-$(CONFIG_X86_ES7000) := arch/x86/mach-default 100core-$(CONFIG_X86_ES7000) := arch/x86/mach-es7000/ 101 102# Xen paravirtualization support 103core-$(CONFIG_XEN) += arch/x86/xen/ 104 105# lguest paravirtualization support 106core-$(CONFIG_LGUEST_GUEST) += arch/x86/lguest/ 107 108# default subarch .h files 109mflags-y += -Iinclude/asm-x86/mach-default 110 111head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task.o 112 113libs-y += arch/x86/lib/ 114core-y += arch/x86/kernel/ \ 115 arch/x86/mm/ \ 116 $(mcore-y)/ \ 117 arch/x86/crypto/ 118drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/ 119drivers-$(CONFIG_PCI) += arch/x86/pci/ 120# must be linked after kernel/ 121drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ 122drivers-$(CONFIG_PM) += arch/x86/power/ 123drivers-$(CONFIG_FB) += arch/x86/video/ 124 125KBUILD_CFLAGS += $(mflags-y) 126KBUILD_AFLAGS += $(mflags-y) 127 128boot := arch/x86/boot 129 130PHONY += zImage bzImage compressed zlilo bzlilo \ 131 zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install 132 133all: bzImage 134 135# KBUILD_IMAGE specify target image being built 136 KBUILD_IMAGE := $(boot)/bzImage 137zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage 138 139zImage 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 143 144compressed: zImage 145 146zlilo bzlilo: vmlinux 147 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo 148 149zdisk bzdisk: vmlinux 150 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk 151 152fdimage fdimage144 fdimage288 isoimage: vmlinux 153 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@ 154 155install: 156 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install 157 158archclean: 159 $(Q)rm -rf $(objtree)/arch/i386/boot 160 $(Q)$(MAKE) $(clean)=arch/x86/boot 161 162define archhelp 163 echo '* bzImage - Compressed kernel image (arch/x86/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' 171endef 172 173CLEAN_FILES += arch/x86/boot/fdimage \ 174 arch/x86/boot/image.iso \ 175 arch/x86/boot/mtools.conf 176