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 # 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
  18 #           Added support for GEODE CPU
  19
  20 HAS_BIARCH      := $(call cc-option-yn, -m32)
  21 ifeq ($(HAS_BIARCH),y)
  22 AS              := $(AS) --32
  23 LD              := $(LD) -m elf_i386
  24 CC              := $(CC) -m32
  25 endif
  26
  27 LDFLAGS         := -m elf_i386
  28 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  29 LDFLAGS_vmlinux :=
  30 CHECKFLAGS      += -D__i386__
  31
  32 CFLAGS += -pipe -msoft-float
  33
  34 # prevent gcc from keeping the stack 16 byte aligned
  35 CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  36
  37 align := $(cc-option-align)
  38 cflags-$(CONFIG_M386)           += -march=i386
  39 cflags-$(CONFIG_M486)           += -march=i486
  40 cflags-$(CONFIG_M586)           += -march=i586
  41 cflags-$(CONFIG_M586TSC)        += -march=i586
  42 cflags-$(CONFIG_M586MMX)        += $(call cc-option,-march=pentium-mmx,-march=i586)
  43 cflags-$(CONFIG_M686)           += -march=i686
  44 cflags-$(CONFIG_MPENTIUMII)     += -march=i686 $(call cc-option,-mtune=pentium2)
  45 cflags-$(CONFIG_MPENTIUMIII)    += -march=i686 $(call cc-option,-mtune=pentium3)
  46 cflags-$(CONFIG_MPENTIUMM)      += -march=i686 $(call cc-option,-mtune=pentium3)
  47 cflags-$(CONFIG_MPENTIUM4)      += -march=i686 $(call cc-option,-mtune=pentium4)
  48 cflags-$(CONFIG_MK6)            += -march=k6
  49 # Please note, that patches that add -march=athlon-xp and friends are pointless.
  50 # They make zero difference whatsosever to performance at this time.
  51 cflags-$(CONFIG_MK7)            += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
  52 cflags-$(CONFIG_MK8)            += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
  53 cflags-$(CONFIG_MCRUSOE)        += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  54 cflags-$(CONFIG_MEFFICEON)      += -march=i686 $(call cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  55 cflags-$(CONFIG_MWINCHIPC6)     += $(call cc-option,-march=winchip-c6,-march=i586)
  56 cflags-$(CONFIG_MWINCHIP2)      += $(call cc-option,-march=winchip2,-march=i586)
  57 cflags-$(CONFIG_MWINCHIP3D)     += $(call cc-option,-march=winchip2,-march=i586)
  58 cflags-$(CONFIG_MCYRIXIII)      += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  59 cflags-$(CONFIG_MVIAC3_2)       += $(call cc-option,-march=c3-2,-march=i686)
  60
  61 # AMD Elan support
  62 cflags-$(CONFIG_X86_ELAN)       += -march=i486
  63
  64 # Geode GX1 support
  65 cflags-$(CONFIG_MGEODEGX1)              += $(call cc-option,-march=pentium-mmx,-march=i486)
  66
  67 # -mregparm=3 works ok on gcc-3.0 and later
  68 #
  69 GCC_VERSION                     := $(call cc-version)
  70 cflags-$(CONFIG_REGPARM)        += $(shell if [ $(GCC_VERSION) -ge 0300 ] ; then echo "-mregparm=3"; fi ;)
  71
  72 # Disable unit-at-a-time mode, it makes gcc use a lot more stack
  73 # due to the lack of sharing of stacklots.
  74 CFLAGS += $(call cc-option,-fno-unit-at-a-time)
  75
  76 CFLAGS += $(cflags-y)
  77
  78 # Default subarch .c files
  79 mcore-y  := mach-default
  80
  81 # Voyager subarch support
  82 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
  83 mcore-$(CONFIG_X86_VOYAGER)     := mach-voyager
  84
  85 # VISWS subarch support
  86 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
  87 mcore-$(CONFIG_X86_VISWS)       := mach-visws
  88
  89 # NUMAQ subarch support
  90 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
  91 mcore-$(CONFIG_X86_NUMAQ)       := mach-default
  92
  93 # BIGSMP subarch support
  94 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
  95 mcore-$(CONFIG_X86_BIGSMP)      := mach-default
  96
  97 #Summit subarch support
  98 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
  99 mcore-$(CONFIG_X86_SUMMIT)  := mach-default
 100
 101 # generic subarchitecture
 102 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
 103 mcore-$(CONFIG_X86_GENERICARCH) := mach-default
 104 core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
 105
 106 # ES7000 subarch support
 107 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
 108 mcore-$(CONFIG_X86_ES7000)      := mach-default
 109 core-$(CONFIG_X86_ES7000)       := arch/i386/mach-es7000/
 110
 111 # default subarch .h files
 112 mflags-y += -Iinclude/asm-i386/mach-default
 113
 114 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
 115
 116 libs-y                                  += arch/i386/lib/
 117 core-y                                  += arch/i386/kernel/ \
 118                                            arch/i386/mm/ \
 119                                            arch/i386/$(mcore-y)/ \
 120                                            arch/i386/crypto/
 121 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
 122 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
 123 # must be linked after kernel/
 124 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
 125 drivers-$(CONFIG_PM)                    += arch/i386/power/
 126
 127 CFLAGS += $(mflags-y)
 128 AFLAGS += $(mflags-y)
 129
 130 boot := arch/i386/boot
 131
 132 .PHONY: zImage bzImage compressed zlilo bzlilo \
 133         zdisk bzdisk fdimage fdimage144 fdimage288 install kernel_install
 134
 135 all: bzImage
 136
 137 # KBUILD_IMAGE specify target image being built
 138                     KBUILD_IMAGE := $(boot)/bzImage
 139 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
 140
 141 zImage bzImage: vmlinux
 142         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 143
 144 compressed: zImage
 145
 146 zlilo bzlilo: vmlinux
 147         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 148
 149 zdisk bzdisk: vmlinux
 150         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 151
 152 fdimage fdimage144 fdimage288: vmlinux
 153         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 154
 155 install: vmlinux
 156 install kernel_install:
 157         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
 158
 159 archclean:
 160         $(Q)$(MAKE) $(clean)=arch/i386/boot
 161
 162 define archhelp
 163   echo  '* bzImage      - Compressed kernel image (arch/$(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 endef
 171
 172 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf