kernel/linux/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 CHECK           := $(CHECK) -D__i386__=1
  22
  23 CFLAGS += -pipe -msoft-float
  24
  25 # prevent gcc from keeping the stack 16 byte aligned
  26 CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,)
  27
  28 align := $(subst -functions=0,,$(call check_gcc,-falign-functions=0,-malign-functions=0))
  29
  30 cflags-$(CONFIG_M386)           += -march=i386
  31 cflags-$(CONFIG_M486)           += -march=i486
  32 cflags-$(CONFIG_M586)           += -march=i586
  33 cflags-$(CONFIG_M586TSC)        += -march=i586
  34 cflags-$(CONFIG_M586MMX)        += $(call check_gcc,-march=pentium-mmx,-march=i586)
  35 cflags-$(CONFIG_M686)           += -march=i686
  36 cflags-$(CONFIG_MPENTIUMII)     += $(call check_gcc,-march=pentium2,-march=i686)
  37 cflags-$(CONFIG_MPENTIUMIII)    += $(call check_gcc,-march=pentium3,-march=i686)
  38 cflags-$(CONFIG_MPENTIUMM)      += $(call check_gcc,-march=pentium3,-march=i686)
  39 cflags-$(CONFIG_MPENTIUM4)      += $(call check_gcc,-march=pentium4,-march=i686)
  40 cflags-$(CONFIG_MK6)            += -march=k6
  41 # Please note, that patches that add -march=athlon-xp and friends are pointless.
  42 # They make zero difference whatsosever to performance at this time.
  43 cflags-$(CONFIG_MK7)            += $(call check_gcc,-march=athlon,-march=i686 $(align)-functions=4)
  44 cflags-$(CONFIG_MK8)            += $(call check_gcc,-march=k8,$(call check_gcc,-march=athlon,-march=i686 $(align)-functions=4))
  45 cflags-$(CONFIG_MCRUSOE)        += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  46 cflags-$(CONFIG_MWINCHIPC6)     += $(call check_gcc,-march=winchip-c6,-march=i586)
  47 cflags-$(CONFIG_MWINCHIP2)      += $(call check_gcc,-march=winchip2,-march=i586)
  48 cflags-$(CONFIG_MWINCHIP3D)     += $(call check_gcc,-march=winchip2,-march=i586)
  49 cflags-$(CONFIG_MCYRIXIII)      += $(call check_gcc,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  50 cflags-$(CONFIG_MVIAC3_2)       += $(call check_gcc,-march=c3-2,-march=i686)
  51
  52 # AMD Elan support
  53 cflags-$(CONFIG_X86_ELAN)       += -march=i486
  54
  55 # -mregparm=3 works ok on gcc-3.0 and later
  56 #
  57 GCC_VERSION                     := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
  58 cflags-$(CONFIG_REGPARM)        += $(shell if [ $(GCC_VERSION) -ge 0300 ] ; then echo "-mregparm=3"; fi ;)
  59
  60 # Disable unit-at-a-time mode, it makes gcc use a lot more stack
  61 # due to the lack of sharing of stacklots.
  62 CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
  63
  64 CFLAGS += $(cflags-y)
  65
  66 # Default subarch .c files
  67 mcore-y  := mach-default
  68
  69 # Voyager subarch support
  70 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
  71 mcore-$(CONFIG_X86_VOYAGER)     := mach-voyager
  72
  73 # VISWS subarch support
  74 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
  75 mcore-$(CONFIG_X86_VISWS)       := mach-visws
  76
  77 # NUMAQ subarch support
  78 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
  79 mcore-$(CONFIG_X86_NUMAQ)       := mach-default
  80
  81 # BIGSMP subarch support
  82 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
  83 mcore-$(CONFIG_X86_BIGSMP)      := mach-default
  84
  85 #Summit subarch support
  86 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
  87 mcore-$(CONFIG_X86_SUMMIT)  := mach-default
  88
  89 # generic subarchitecture
  90 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
  91 mcore-$(CONFIG_X86_GENERICARCH) := mach-default
  92 core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
  93
  94 # ES7000 subarch support
  95 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
  96 mcore-$(CONFIG_X86_ES7000)      := mach-default
  97 core-$(CONFIG_X86_ES7000)       := arch/i386/mach-es7000/
  98
  99 # default subarch .h files
 100 mflags-y += -Iinclude/asm-i386/mach-default
 101
 102 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
 103
 104 libs-y                                  += arch/i386/lib/
 105 core-y                                  += arch/i386/kernel/ \
 106                                            arch/i386/mm/ \
 107                                            arch/i386/$(mcore-y)/ \
 108                                            arch/i386/crypto/
 109 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
 110 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
 111 # must be linked after kernel/
 112 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
 113 drivers-$(CONFIG_PM)                    += arch/i386/power/
 114
 115 CFLAGS += $(mflags-y)
 116 AFLAGS += $(mflags-y)
 117
 118 boot := arch/i386/boot
 119
 120 .PHONY: zImage bzImage compressed zlilo bzlilo \
 121         zdisk bzdisk fdimage fdimage144 fdimage288 install
 122
 123 all: bzImage
 124
 125 # KBUILD_IMAGE specify target image being built
 126                     KBUILD_IMAGE := $(boot)/bzImage
 127 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
 128
 129 zImage bzImage: vmlinux
 130         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 131
 132 compressed: zImage
 133
 134 zlilo bzlilo: vmlinux
 135         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 136
 137 zdisk bzdisk: vmlinux
 138         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 139
 140 install fdimage fdimage144 fdimage288: vmlinux
 141         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 142
 143 prepare: include/asm-$(ARCH)/asm_offsets.h
 144 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
 145
 146 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 147                                    include/config/MARKER
 148
 149 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 150         $(call filechk,gen-asm-offsets)
 151
 152 archclean:
 153         $(Q)$(MAKE) $(clean)=arch/i386/boot
 154
 155 define archhelp
 156   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 157   echo  '  install      - Install kernel using'
 158   echo  '                  (your) ~/bin/installkernel or'
 159   echo  '                  (distribution) /sbin/installkernel or'
 160   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 161   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 162   echo  '  fdimage      - Create a boot floppy image'
 163 endef
 164
 165 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf