arch/i386/Makefile

   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
  18 LDFLAGS         := -m elf_i386
  19 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  20 LDFLAGS_vmlinux :=
  21 CHECKFLAGS      += -D__i386__
  22
  23 CFLAGS += -pipe -msoft-float
  24
  25 # prevent gcc from keeping the stack 16 byte aligned
  26 CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  27
  28 align := $(subst -functions=0,,$(call cc-option,-falign-functions=0,-malign-functions=0))
  29 cflags-$(CONFIG_M386)           += -march=i386
  30 cflags-$(CONFIG_M486)           += -march=i486
  31 cflags-$(CONFIG_M586)           += -march=i586
  32 cflags-$(CONFIG_M586TSC)        += -march=i586
  33 cflags-$(CONFIG_M586MMX)        += $(call cc-option,-march=pentium-mmx,-march=i586)
  34 cflags-$(CONFIG_M686)           += -march=i686
  35 cflags-$(CONFIG_MPENTIUMII)     += $(call cc-option,-march=pentium2,-march=i686)
  36 cflags-$(CONFIG_MPENTIUMIII)    += $(call cc-option,-march=pentium3,-march=i686)
  37 cflags-$(CONFIG_MPENTIUMM)      += $(call cc-option,-march=pentium3,-march=i686)
  38 cflags-$(CONFIG_MPENTIUM4)      += $(call cc-option,-march=pentium4,-march=i686)
  39 cflags-$(CONFIG_MK6)            += -march=k6
  40 # Please note, that patches that add -march=athlon-xp and friends are pointless.
  41 # They make zero difference whatsosever to performance at this time.
  42 cflags-$(CONFIG_MK7)            += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
  43 cflags-$(CONFIG_MK8)            += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
  44 cflags-$(CONFIG_MCRUSOE)        += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  45 cflags-$(CONFIG_MWINCHIPC6)     += $(call cc-option,-march=winchip-c6,-march=i586)
  46 cflags-$(CONFIG_MWINCHIP2)      += $(call cc-option,-march=winchip2,-march=i586)
  47 cflags-$(CONFIG_MWINCHIP3D)     += $(call cc-option,-march=winchip2,-march=i586)
  48 cflags-$(CONFIG_MCYRIXIII)      += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  49 cflags-$(CONFIG_MVIAC3_2)       += $(call cc-option,-march=c3-2,-march=i686)
  50
  51 # AMD Elan support
  52 cflags-$(CONFIG_X86_ELAN)       += -march=i486
  53
  54 # -mregparm=3 works ok on gcc-3.0 and later
  55 #
  56 GCC_VERSION                     := $(call cc-version)
  57 cflags-$(CONFIG_REGPARM)        += $(shell if [ $(GCC_VERSION) -ge 0300 ] ; then echo "-mregparm=3"; fi ;)
  58
  59 # Disable unit-at-a-time mode, it makes gcc use a lot more stack
  60 # due to the lack of sharing of stacklots.
  61 CFLAGS += $(call cc-option,-fno-unit-at-a-time)
  62
  63 CFLAGS += $(cflags-y)
  64
  65 # Default subarch .c files
  66 mcore-y  := mach-default
  67
  68 # Voyager subarch support
  69 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
  70 mcore-$(CONFIG_X86_VOYAGER)     := mach-voyager
  71
  72 # VISWS subarch support
  73 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
  74 mcore-$(CONFIG_X86_VISWS)       := mach-visws
  75
  76 # NUMAQ subarch support
  77 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
  78 mcore-$(CONFIG_X86_NUMAQ)       := mach-default
  79
  80 # BIGSMP subarch support
  81 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
  82 mcore-$(CONFIG_X86_BIGSMP)      := mach-default
  83
  84 #Summit subarch support
  85 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
  86 mcore-$(CONFIG_X86_SUMMIT)  := mach-default
  87
  88 # generic subarchitecture
  89 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
  90 mcore-$(CONFIG_X86_GENERICARCH) := mach-default
  91 core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
  92
  93 # ES7000 subarch support
  94 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
  95 mcore-$(CONFIG_X86_ES7000)      := mach-default
  96 core-$(CONFIG_X86_ES7000)       := arch/i386/mach-es7000/
  97
  98 # default subarch .h files
  99 mflags-y += -Iinclude/asm-i386/mach-default
 100
 101 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
 102
 103 libs-y                                  += arch/i386/lib/
 104 core-y                                  += arch/i386/kernel/ \
 105                                            arch/i386/mm/ \
 106                                            arch/i386/$(mcore-y)/ \
 107                                            arch/i386/crypto/
 108 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
 109 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
 110 # must be linked after kernel/
 111 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
 112 drivers-$(CONFIG_PM)                    += arch/i386/power/
 113
 114 CFLAGS += $(mflags-y)
 115 AFLAGS += $(mflags-y)
 116
 117 boot := arch/i386/boot
 118
 119 .PHONY: zImage bzImage compressed zlilo bzlilo \
 120         zdisk bzdisk fdimage fdimage144 fdimage288 install
 121
 122 all: bzImage
 123
 124 # KBUILD_IMAGE specify target image being built
 125                     KBUILD_IMAGE := $(boot)/bzImage
 126 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
 127
 128 zImage bzImage: vmlinux
 129         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 130
 131 compressed: zImage
 132
 133 zlilo bzlilo: vmlinux
 134         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 135
 136 zdisk bzdisk: vmlinux
 137         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 138
 139 install fdimage fdimage144 fdimage288: vmlinux
 140         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 141
 142 prepare: include/asm-$(ARCH)/asm_offsets.h
 143 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
 144
 145 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 146                                    include/config/MARKER
 147
 148 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 149         $(call filechk,gen-asm-offsets)
 150
 151 archclean:
 152         $(Q)$(MAKE) $(clean)=arch/i386/boot
 153
 154 define archhelp
 155   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 156   echo  '  install      - Install kernel using'
 157   echo  '                  (your) ~/bin/installkernel or'
 158   echo  '                  (distribution) /sbin/installkernel or'
 159   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 160   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 161   echo  '  fdimage      - Create a boot floppy image'
 162 endef
 163
 164 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf