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 archprepare:
  24         @mkdir -p ${objtree}/arch/x86/kernel
  25
  26
  27 HAS_BIARCH      := $(call cc-option-yn, -m32)
  28 ifeq ($(HAS_BIARCH),y)
  29 AS              := $(AS) --32
  30 LD              := $(LD) -m elf_i386
  31 CC              := $(CC) -m32
  32 endif
  33
  34 LDFLAGS         := -m elf_i386
  35 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
  36 ifdef CONFIG_RELOCATABLE
  37 LDFLAGS_vmlinux := --emit-relocs
  38 endif
  39 CHECKFLAGS      += -D__i386__
  40
  41 CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
  42
  43 # prevent gcc from keeping the stack 16 byte aligned
  44 CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
  45
  46 # CPU-specific tuning. Anything which can be shared with UML should go here.
  47 include $(srctree)/arch/i386/Makefile.cpu
  48
  49 # temporary until string.h is fixed
  50 cflags-y += -ffreestanding
  51
  52 # this works around some issues with generating unwind tables in older gccs
  53 # newer gccs do it by default
  54 cflags-y += -maccumulate-outgoing-args
  55
  56 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
  57 # a lot more stack due to the lack of sharing of stacklots:
  58 CFLAGS                          += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
  59
  60 # do binutils support CFI?
  61 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  62 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
  63
  64 # is .cfi_signal_frame supported too?
  65 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  66 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
  67
  68 CFLAGS += $(cflags-y)
  69
  70 # Default subarch .c files
  71 mcore-y  := arch/x86/mach-default
  72
  73 # Voyager subarch support
  74 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
  75 mcore-$(CONFIG_X86_VOYAGER)     := arch/x86/mach-voyager
  76
  77 # VISWS subarch support
  78 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
  79 mcore-$(CONFIG_X86_VISWS)       := arch/x86/mach-visws
  80
  81 # NUMAQ subarch support
  82 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
  83 mcore-$(CONFIG_X86_NUMAQ)       := arch/x86/mach-default
  84
  85 # BIGSMP subarch support
  86 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
  87 mcore-$(CONFIG_X86_BIGSMP)      := arch/x86/mach-default
  88
  89 #Summit subarch support
  90 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
  91 mcore-$(CONFIG_X86_SUMMIT)  := arch/x86/mach-default
  92
  93 # generic subarchitecture
  94 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
  95 mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default
  96 core-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
  97
  98 # ES7000 subarch support
  99 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
 100 mcore-$(CONFIG_X86_ES7000)      := arch/x86/mach-default
 101 core-$(CONFIG_X86_ES7000)       := arch/x86/mach-es7000/
 102
 103 # Xen paravirtualization support
 104 core-$(CONFIG_XEN)              += arch/x86/xen/
 105
 106 # default subarch .h files
 107 mflags-y += -Iinclude/asm-i386/mach-default
 108
 109 head-y := arch/x86/kernel/head_32.o arch/x86/kernel/init_task_32.o
 110
 111 libs-y                                  += arch/x86/lib/
 112 core-y                                  += arch/x86/kernel/ \
 113                                            arch/x86/mm/ \
 114                                            $(mcore-y)/ \
 115                                            arch/x86/crypto/
 116 drivers-$(CONFIG_MATH_EMULATION)        += arch/x86/math-emu/
 117 drivers-$(CONFIG_PCI)                   += arch/x86/pci/
 118 # must be linked after kernel/
 119 drivers-$(CONFIG_OPROFILE)              += arch/x86/oprofile/
 120 drivers-$(CONFIG_PM)                    += arch/x86/power/
 121 drivers-$(CONFIG_FB)                    += arch/x86/video/
 122
 123 CFLAGS += $(mflags-y)
 124 AFLAGS += $(mflags-y)
 125
 126 boot := arch/x86/boot
 127
 128 PHONY += zImage bzImage compressed zlilo bzlilo \
 129          zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
 130
 131 all: bzImage
 132
 133 # KBUILD_IMAGE specify target image being built
 134                     KBUILD_IMAGE := $(boot)/bzImage
 135 zImage zlilo zdisk: KBUILD_IMAGE := arch/x86/boot/zImage
 136
 137 zImage bzImage: vmlinux
 138         $(Q)mkdir -p $(objtree)/arch/i386/boot
 139         $(Q)ln -fsn $(objtree)/arch/x86/boot/bzImage $(objtree)/arch/i386/boot/bzImage
 140         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
 141
 142 compressed: zImage
 143
 144 zlilo bzlilo: vmlinux
 145         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
 146
 147 zdisk bzdisk: vmlinux
 148         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
 149
 150 fdimage fdimage144 fdimage288 isoimage: vmlinux
 151         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
 152
 153 install:
 154         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
 155
 156 archclean:
 157         $(Q)rm -rf $(objtree)/arch/i386/boot
 158         $(Q)$(MAKE) $(clean)=arch/x86/boot
 159
 160 define archhelp
 161   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
 162   echo  '  install      - Install kernel using'
 163   echo  '                  (your) ~/bin/installkernel or'
 164   echo  '                  (distribution) /sbin/installkernel or'
 165   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 166   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
 167   echo  '  fdimage      - Create a boot floppy image'
 168   echo  '  isoimage     - Create a boot CD-ROM image'
 169 endef
 170
 171 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
 172                arch/$(ARCH)/boot/image.iso \
 173                arch/$(ARCH)/boot/mtools.conf