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