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
  22 CFLAGS += -pipe
  23
  24 # prevent gcc from keeping the stack 16 byte aligned
  25 CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,)
  26
  27 align := $(subst -functions=0,,$(call check_gcc,-falign-functions=0,-malign-functions=0))
  28
  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)        += $(call check_gcc,-march=pentium-mmx,-march=i586)
  34 cflags-$(CONFIG_M686)           += -march=i686
  35 cflags-$(CONFIG_MPENTIUMII)     += $(call check_gcc,-march=pentium2,-march=i686)
  36 cflags-$(CONFIG_MPENTIUMIII)    += $(call check_gcc,-march=pentium3,-march=i686)
  37 cflags-$(CONFIG_MPENTIUMM)      += $(call check_gcc,-march=pentium3,-march=i686)
  38 cflags-$(CONFIG_MPENTIUM4)      += $(call check_gcc,-march=pentium4,-march=i686)
  39 cflags-$(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 check_gcc,-march=athlon,-march=i686 $(align)-functions=4)
  43 cflags-$(CONFIG_MK8)            += $(call check_gcc,-march=k8,$(call check_gcc,-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)     += $(call check_gcc,-march=winchip-c6,-march=i586)
  46 cflags-$(CONFIG_MWINCHIP2)      += $(call check_gcc,-march=winchip2,-march=i586)
  47 cflags-$(CONFIG_MWINCHIP3D)     += $(call check_gcc,-march=winchip2,-march=i586)
  48 cflags-$(CONFIG_MCYRIXIII)      += $(call check_gcc,-march=c3,-march=i486) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
  49 cflags-$(CONFIG_MVIAC3_2)       += $(call check_gcc,-march=c3-2,-march=i686)
  50
  51 # AMD Elan support
  52 cflags-$(CONFIG_X86_ELAN)       += -march=i486
  53
  54 # -mregparm=3 works ok on gcc-3.0 and later
  55 #
  56 GCC_VERSION                     := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
  57 cflags-$(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 check_gcc,-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-es7000
  96
  97 # default subarch .h files
  98 mflags-y += -Iinclude/asm-i386/mach-default
  99
 100 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
 101
 102 libs-y                                  += arch/i386/lib/
 103 core-y                                  += arch/i386/kernel/ \
 104                                            arch/i386/mm/ \
 105                                            arch/i386/$(mcore-y)/
 106 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
 107 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
 108 # must be linked after kernel/
 109 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
 110 drivers-$(CONFIG_PM)                    += arch/i386/power/
 111
 112 CFLAGS += $(mflags-y)
 113 AFLAGS += $(mflags-y)
 114
 115 boot := arch/i386/boot
 116
 117 .PHONY: zImage bzImage compressed zlilo bzlilo \
 118         zdisk bzdisk fdimage fdimage144 fdimage288 install
 119
 120 all: bzImage
 121
 122 BOOTIMAGE=arch/i386/boot/bzImage
 123 zImage zlilo zdisk: BOOTIMAGE=arch/i386/boot/zImage
 124
 125 zImage bzImage: vmlinux
 126         $(Q)$(MAKE) $(build)=$(boot) $(BOOTIMAGE)
 127
 128 compressed: zImage
 129
 130 zlilo bzlilo: vmlinux
 131         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zlilo
 132
 133 zdisk bzdisk: vmlinux
 134         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) zdisk
 135
 136 install fdimage fdimage144 fdimage288: vmlinux
 137         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 138
 139 prepare: include/asm-$(ARCH)/asm_offsets.h
 140 CLEAN_FILES += include/asm-$(ARCH)/asm_offsets.h
 141
 142 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 143                                    include/config/MARKER
 144
 145 include/asm-$(ARCH)/asm_offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 146         $(call filechk,gen-asm-offsets)
 147
 148 archclean:
 149         $(Q)$(MAKE) $(clean)=arch/i386/boot
 150
 151 define archhelp
 152   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 153   echo  '  install      - Install kernel using'
 154   echo  '                  (your) ~/bin/installkernel or'
 155   echo  '                  (distribution) /sbin/installkernel or'
 156   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 157   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 158   echo  '  fdimage      - Create a boot floppy image'
 159 endef
 160
 161 CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf