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 # Fill in SRCARCH
  21 SRCARCH := x86
  22
  23 # BITS is used as extension for files which are available in a 32 bit
  24 # and a 64 bit version to simplify shared Makefiles.
  25 # e.g.: obj-y += foo_$(BITS).o
  26 BITS := 32
  27 export BITS
  28
  29 HAS_BIARCH      := $(call cc-option-yn, -m32)
  30 ifeq ($(HAS_BIARCH),y)
  31 AS              := $(AS) --32
  32 LD              := $(LD) -m elf_i386
  33 CC              := $(CC) -m32
  34 endif
  35
  36 LDFLAGS         := -m elf_i386
  37 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  38 ifdef CONFIG_RELOCATABLE
  39 LDFLAGS_vmlinux := --emit-relocs
  40 endif
  41 CHECKFLAGS      += -D__i386__
  42
  43 KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
  44
  45 # prevent gcc from keeping the stack 16 byte aligned
  46 KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  47
  48 # CPU-specific tuning. Anything which can be shared with UML should go here.
  49 include $(srctree)/arch/i386/Makefile.cpu
  50
  51 # temporary until string.h is fixed
  52 cflags-y += -ffreestanding
  53
  54 # this works around some issues with generating unwind tables in older gccs
  55 # newer gccs do it by default
  56 cflags-y += -maccumulate-outgoing-args
  57
  58 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
  59 # a lot more stack due to the lack of sharing of stacklots:
  60 KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
  61
  62 # do binutils support CFI?
  63 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  64 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  65
  66 # is .cfi_signal_frame supported too?
  67 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  68 KBUILD_AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  69
  70 KBUILD_CFLAGS += $(cflags-y)
  71
  72 # Default subarch .c files
  73 mcore-y  := arch/x86/mach-default
  74
  75 # Voyager subarch support
  76 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-x86/mach-voyager
  77 mcore-$(CONFIG_X86_VOYAGER)     := arch/x86/mach-voyager
  78
  79 # VISWS subarch support
  80 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-x86/mach-visws
  81 mcore-$(CONFIG_X86_VISWS)       := arch/x86/mach-visws
  82
  83 # NUMAQ subarch support
  84 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-x86/mach-numaq
  85 mcore-$(CONFIG_X86_NUMAQ)       := arch/x86/mach-default
  86
  87 # BIGSMP subarch support
  88 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-x86/mach-bigsmp
  89 mcore-$(CONFIG_X86_BIGSMP)      := arch/x86/mach-default
  90
  91 #Summit subarch support
  92 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-x86/mach-summit
  93 mcore-$(CONFIG_X86_SUMMIT)  := arch/x86/mach-default
  94
  95 # generic subarchitecture
  96 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-x86/mach-generic
  97 mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default
  98 core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
  99
 100 # ES7000 subarch support
 101 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-x86/mach-es7000
 102 mcore-$(CONFIG_X86_ES7000)      := arch/x86/mach-default
 103 core-$(CONFIG_X86_ES7000)       := arch/x86/mach-es7000/
 104
 105 # Xen paravirtualization support
 106 core-$(CONFIG_XEN)              += arch/x86/xen/
 107
 108 # lguest paravirtualization support
 109 core-$(CONFIG_LGUEST_GUEST)     += arch/x86/lguest/
 110
 111 # default subarch .h files
 112 mflags-y += -Iinclude/asm-x86/mach-default
 113
 114 head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task.o
 115
 116 libs-y                                  += arch/x86/lib/
 117 core-y                                  += arch/x86/kernel/ \
 118                                            arch/x86/mm/ \
 119                                            $(mcore-y)/ \
 120                                            arch/x86/crypto/
 121 drivers-$(CONFIG_MATH_EMULATION)        += arch/x86/math-emu/
 122 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
 123 # must be linked after kernel/
 124 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
 125 drivers-$(CONFIG_PM)                    += arch/x86/power/
 126 drivers-$(CONFIG_FB)                    += arch/x86/video/
 127
 128 KBUILD_CFLAGS += $(mflags-y)
 129 KBUILD_AFLAGS += $(mflags-y)
 130
 131 boot := arch/x86/boot
 132
 133 PHONY += zImage bzImage compressed zlilo bzlilo \
 134          zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
 135
 136 all: bzImage
 137
 138 # KBUILD_IMAGE specify target image being built
 139                     KBUILD_IMAGE := $(boot)/bzImage
 140 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
 141
 142 zImage bzImage: vmlinux
 143         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 144         $(Q)mkdir -p $(objtree)/arch/i386/boot
 145         $(Q)ln -fsn ../../x86/boot/bzImage $(objtree)/arch/i386/boot/bzImage
 146
 147 compressed: zImage
 148
 149 zlilo bzlilo: vmlinux
 150         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 151
 152 zdisk bzdisk: vmlinux
 153         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 154
 155 fdimage fdimage144 fdimage288 isoimage: vmlinux
 156         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 157
 158 install:
 159         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
 160
 161 archclean:
 162         $(Q)rm -rf $(objtree)/arch/i386/boot
 163         $(Q)$(MAKE) $(clean)=arch/x86/boot
 164
 165 define archhelp
 166   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 167   echo  '  install      - Install kernel using'
 168   echo  '                  (your) ~/bin/installkernel or'
 169   echo  '                  (distribution) /sbin/installkernel or'
 170   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 171   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 172   echo  '  fdimage      - Create a boot floppy image'
 173   echo  '  isoimage     - Create a boot CD-ROM image'
 174 endef
 175
 176 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
 177                arch/$(ARCH)/boot/image.iso \
 178                arch/$(ARCH)/boot/mtools.conf