arch/ppc64/Makefile

   1 # This file is included by the global makefile so that you can add your own
   2 # architecture-specific flags and dependencies. Remember to do have actions
   3 # for "archclean" and "archdep" for cleaning up and making dependencies for
   4 # this architecture
   5 #
   6 # This file is subject to the terms and conditions of the GNU General Public
   7 # License.  See the file "COPYING" in the main directory of this archive
   8 # for more details.
   9 #
  10 # Copyright (C) 1994 by Linus Torvalds
  11 # Changes for PPC by Gary Thomas
  12 # Rewritten by Cort Dougan and Paul Mackerras
  13 # Adjusted for PPC64 by Tom Gall
  14 #
  15
  16 KERNELLOAD      := 0xc000000000000000
  17
  18 # Set default 32 bits cross compilers for vdso and boot wrapper
  19 CROSS32_COMPILE ?=
  20
  21 CROSS32CC               := $(CROSS32_COMPILE)gcc
  22 CROSS32AS               := $(CROSS32_COMPILE)as
  23 CROSS32LD               := $(CROSS32_COMPILE)ld
  24 CROSS32OBJCOPY          := $(CROSS32_COMPILE)objcopy
  25
  26 # If we have a biarch compiler, use it for 32 bits cross compile if
  27 # CROSS32_COMPILE wasn't explicitely defined, and add proper explicit
  28 # target type to target compilers
  29
  30 HAS_BIARCH      := $(call cc-option-yn, -m64)
  31 ifeq ($(HAS_BIARCH),y)
  32 ifeq ($(CROSS32_COMPILE),)
  33 CROSS32CC       := $(CC) -m32
  34 CROSS32AS       := $(AS) -a32
  35 CROSS32LD       := $(LD) -m elf32ppc
  36 CROSS32OBJCOPY  := $(OBJCOPY)
  37 endif
  38 override AS     += -a64
  39 override LD     += -m elf64ppc
  40 override CC     += -m64
  41 endif
  42
  43 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
  44
  45 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
  46
  47 ifeq ($(new_nm),y)
  48 NM              := $(NM) --synthetic
  49
  50 endif
  51
  52 CHECKFLAGS      += -m64 -D__powerpc__ -D__powerpc64__
  53
  54 LDFLAGS         := -m elf64ppc
  55 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
  56 CFLAGS          += -msoft-float -pipe -mminimal-toc -mtraceback=none \
  57                    -mcall-aixdesc
  58 # Temporary hack until we have migrated to asm-powerpc
  59 CPPFLAGS        += -Iarch/$(ARCH)/include
  60
  61 GCC_VERSION     := $(call cc-version)
  62 GCC_BROKEN_VEC  := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi ;)
  63
  64 ifeq ($(CONFIG_POWER4_ONLY),y)
  65 ifeq ($(CONFIG_ALTIVEC),y)
  66 ifeq ($(GCC_BROKEN_VEC),y)
  67         CFLAGS += $(call cc-option,-mcpu=970)
  68 else
  69         CFLAGS += $(call cc-option,-mcpu=power4)
  70 endif
  71 else
  72         CFLAGS += $(call cc-option,-mcpu=power4)
  73 endif
  74 else
  75         CFLAGS += $(call cc-option,-mtune=power4)
  76 endif
  77
  78 # No AltiVec instruction when building kernel
  79 CFLAGS  += $(call cc-option, -mno-altivec)
  80
  81 # Enable unit-at-a-time mode when possible. It shrinks the
  82 # kernel considerably.
  83 CFLAGS += $(call cc-option,-funit-at-a-time)
  84
  85 head-y := arch/ppc64/kernel/head.o
  86 head-y += arch/powerpc/kernel/fpu.o
  87 head-y += arch/powerpc/kernel/entry_64.o
  88
  89 core-y                          += arch/ppc64/kernel/ arch/powerpc/kernel/
  90 core-y                          += arch/powerpc/mm/
  91 core-y                          += arch/powerpc/sysdev/
  92 core-y                          += arch/powerpc/platforms/
  93 core-y                          += arch/powerpc/lib/
  94 core-$(CONFIG_XMON)             += arch/powerpc/xmon/
  95 drivers-$(CONFIG_OPROFILE)      += arch/powerpc/oprofile/
  96
  97 boot := arch/ppc64/boot
  98
  99 boottargets-$(CONFIG_PPC_PSERIES) += zImage zImage.initrd
 100 boottargets-$(CONFIG_PPC_PMAC) += zImage.vmode zImage.initrd.vmode
 101 boottargets-$(CONFIG_PPC_MAPLE) += zImage zImage.initrd
 102 boottargets-$(CONFIG_PPC_ISERIES) += vmlinux.sminitrd vmlinux.initrd vmlinux.sm
 103 boottargets-$(CONFIG_PPC_BPA) += zImage zImage.initrd
 104 $(boottargets-y): vmlinux
 105         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 106
 107 bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
 108 bootimage-$(CONFIG_PPC_PMAC) := vmlinux
 109 bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
 110 bootimage-$(CONFIG_PPC_BPA) := $(boot)/zImage
 111 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
 112 BOOTIMAGE := $(bootimage-y)
 113 install: vmlinux
 114         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 115
 116 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
 117 defaultimage-$(CONFIG_PPC_PMAC) := zImage.vmode
 118 defaultimage-$(CONFIG_PPC_MAPLE) := zImage
 119 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 120 KBUILD_IMAGE := $(defaultimage-y)
 121 all: $(KBUILD_IMAGE)
 122
 123 archclean:
 124         $(Q)$(MAKE) $(clean)=$(boot)
 125         # Temporary hack until we have migrated to asm-powerpc
 126         $(Q)rm -rf arch/$(ARCH)/include
 127
 128
 129 # Temporary hack until we have migrated to asm-powerpc
 130 include/asm: arch/$(ARCH)/include/asm
 131 arch/$(ARCH)/include/asm:
 132         $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
 133         $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
 134
 135 define archhelp
 136   echo  '  zImage.vmode        - Compressed kernel image (arch/$(ARCH)/boot/zImage.vmode)'
 137   echo  '  zImage.initrd.vmode - Compressed kernel image with initrd attached,'
 138   echo  '                        sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
 139   echo  '                        (arch/$(ARCH)/boot/zImage.initrd.vmode)'
 140   echo  '  zImage              - zImage for pSeries machines'
 141   echo  '  zImage.initrd       - zImage with initrd for pSeries machines'
 142 endef