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   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 #           Kianusch Sayah Karadji <kianusch@sk-tech.net>
  18 #           Added support for GEODE CPU
  19
  20 LDFLAGS         := -m elf_i386
  21 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  22 LDFLAGS_vmlinux :=
  23 CHECKFLAGS      += -D__i386__
  24
  25 CFLAGS += -pipe -msoft-float
  26
  27 # prevent gcc from keeping the stack 16 byte aligned
  28 CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  29
  30 align := $(cc-option-align)
  31 cflags-$(CONFIG_M386)           += -march=i386
  32 cflags-$(CONFIG_M486)           += -march=i486
  33 cflags-$(CONFIG_M586)           += -march=i586
  34 cflags-$(CONFIG_M586TSC)        += -march=i586
  35 cflags-$(CONFIG_M586MMX)        += $(call cc-option,-march=pentium-mmx,-march=i586)
  36 cflags-$(CONFIG_M686)           += -march=i686
  37 cflags-$(CONFIG_MPENTIUMII)     += -march=i686 $(call cc-option,-mtune=pentium2)
  38 cflags-$(CONFIG_MPENTIUMIII)    += -march=i686 $(call cc-option,-mtune=pentium3)
  39 cflags-$(CONFIG_MPENTIUMM)      += -march=i686 $(call cc-option,-mtune=pentium3)
  40 cflags-$(CONFIG_MPENTIUM4)      += -march=i686 $(call cc-option,-mtune=pentium4)
  41 cflags-$(CONFIG_MK6)            += -march=k6
  42 # Please note, that patches that add -march=athlon-xp and friends are pointless.
  43 # They make zero difference whatsosever to performance at this time.
  44 cflags-$(CONFIG_MK7)            += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
  45 cflags-$(CONFIG_MK8)            += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
  46 cflags-$(CONFIG_MCRUSOE)        += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  47 cflags-$(CONFIG_MEFFICEON)      += -march=i686 $(call cc-option,-mtune=pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  48 cflags-$(CONFIG_MWINCHIPC6)     += $(call cc-option,-march=winchip-c6,-march=i586)
  49 cflags-$(CONFIG_MWINCHIP2)      += $(call cc-option,-march=winchip2,-march=i586)
  50 cflags-$(CONFIG_MWINCHIP3D)     += $(call cc-option,-march=winchip2,-march=i586)
  51 cflags-$(CONFIG_MCYRIXIII)      += $(call cc-option,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  52 cflags-$(CONFIG_MVIAC3_2)       += $(call cc-option,-march=c3-2,-march=i686)
  53
  54 # AMD Elan support
  55 cflags-$(CONFIG_X86_ELAN)       += -march=i486
  56
  57 # MediaGX aka Geode support
  58 cflags-$(CONFIG_MGEODE)         += $(call cc-option,-march=pentium-mmx,-march=i586)
  59
  60 # -mregparm=3 works ok on gcc-3.0 and later
  61 #
  62 GCC_VERSION                     := $(call cc-version)
  63 cflags-$(CONFIG_REGPARM)        += $(shell if [ $(GCC_VERSION) -ge 0300 ] ; then echo "-mregparm=3"; fi ;)
  64
  65 # Disable unit-at-a-time mode, it makes gcc use a lot more stack
  66 # due to the lack of sharing of stacklots.
  67 CFLAGS += $(call cc-option,-fno-unit-at-a-time)
  68
  69 CFLAGS += $(cflags-y)
  70
  71 # Default subarch .c files
  72 mcore-y  := mach-default
  73
  74 # Voyager subarch support
  75 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
  76 mcore-$(CONFIG_X86_VOYAGER)     := mach-voyager
  77
  78 # VISWS subarch support
  79 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
  80 mcore-$(CONFIG_X86_VISWS)       := mach-visws
  81
  82 # NUMAQ subarch support
  83 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
  84 mcore-$(CONFIG_X86_NUMAQ)       := mach-default
  85
  86 # BIGSMP subarch support
  87 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
  88 mcore-$(CONFIG_X86_BIGSMP)      := mach-default
  89
  90 #Summit subarch support
  91 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
  92 mcore-$(CONFIG_X86_SUMMIT)  := mach-default
  93
  94 # generic subarchitecture
  95 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
  96 mcore-$(CONFIG_X86_GENERICARCH) := mach-default
  97 core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
  98
  99 # ES7000 subarch support
 100 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
 101 mcore-$(CONFIG_X86_ES7000)      := mach-default
 102 core-$(CONFIG_X86_ES7000)       := arch/i386/mach-es7000/
 103
 104 # default subarch .h files
 105 mflags-y += -Iinclude/asm-i386/mach-default
 106
 107 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
 108
 109 libs-y                                  += arch/i386/lib/
 110 core-y                                  += arch/i386/kernel/ \
 111                                            arch/i386/mm/ \
 112                                            arch/i386/$(mcore-y)/ \
 113                                            arch/i386/crypto/
 114 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
 115 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
 116 # must be linked after kernel/
 117 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
 118 drivers-$(CONFIG_PM)                    += arch/i386/power/
 119
 120 CFLAGS += $(mflags-y)
 121 AFLAGS += $(mflags-y)
 122
 123 boot := arch/i386/boot
 124
 125 .PHONY: zImage bzImage compressed zlilo bzlilo \
 126         zdisk bzdisk fdimage fdimage144 fdimage288 install
 127
 128 all: bzImage
 129
 130 # KBUILD_IMAGE specify target image being built
 131                     KBUILD_IMAGE := $(boot)/bzImage
 132 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
 133
 134 zImage bzImage: vmlinux
 135         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 136
 137 compressed: zImage
 138
 139 zlilo bzlilo: vmlinux
 140         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 141
 142 zdisk bzdisk: vmlinux
 143         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 144
 145 fdimage fdimage144 fdimage288: vmlinux
 146         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 147
 148 install:
 149         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 150
 151 prepare: include/asm-$(ARCH)/asm_offsets.h
 152 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
 153
 154 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 155                                    include/config/MARKER
 156
 157 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 158         $(call filechk,gen-asm-offsets)
 159
 160 archclean:
 161         $(Q)$(MAKE) $(clean)=arch/i386/boot
 162
 163 define archhelp
 164   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 165   echo  '  install      - Install kernel using'
 166   echo  '                  (your) ~/bin/installkernel or'
 167   echo  '                  (distribution) /sbin/installkernel or'
 168   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 169   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 170   echo  '  fdimage      - Create a boot floppy image'
 171 endef
 172
 173 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf