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 AS              := $(AS) -a64
  39 LD              := $(LD) -m elf64ppc
  40 CC              := $(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__
  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
  59 GCC_VERSION     := $(call cc-version)
  60 GCC_BROKEN_VEC  := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi ;)
  61
  62 ifeq ($(CONFIG_POWER4_ONLY),y)
  63 ifeq ($(CONFIG_ALTIVEC),y)
  64 ifeq ($(GCC_BROKEN_VEC),y)
  65         CFLAGS += $(call cc-option,-mcpu=970)
  66 else
  67         CFLAGS += $(call cc-option,-mcpu=power4)
  68 endif
  69 else
  70         CFLAGS += $(call cc-option,-mcpu=power4)
  71 endif
  72 else
  73         CFLAGS += $(call cc-option,-mtune=power4)
  74 endif
  75
  76 # Enable unit-at-a-time mode when possible. It shrinks the
  77 # kernel considerably.
  78 CFLAGS += $(call cc-option,-funit-at-a-time)
  79
  80 head-y := arch/ppc64/kernel/head.o
  81
  82 libs-y                          += arch/ppc64/lib/
  83 core-y                          += arch/ppc64/kernel/
  84 core-y                          += arch/ppc64/mm/
  85 core-$(CONFIG_XMON)             += arch/ppc64/xmon/
  86 drivers-$(CONFIG_OPROFILE)      += arch/ppc64/oprofile/
  87
  88 boot := arch/ppc64/boot
  89
  90 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
  91 boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
  92 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
  93 $(boottarget-y): vmlinux
  94         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  95
  96 bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
  97 bootimage-$(CONFIG_PPC_PMAC) := vmlinux
  98 bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
  99 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
 100 BOOTIMAGE := $(bootimage-y)
 101 install: vmlinux
 102         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
 103
 104 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
 105 defaultimage-$(CONFIG_PPC_PMAC) := vmlinux
 106 defaultimage-$(CONFIG_PPC_MAPLE) := zImage
 107 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 108 KBUILD_IMAGE := $(defaultimage-y)
 109 all: $(KBUILD_IMAGE)
 110
 111 archclean:
 112         $(Q)$(MAKE) $(clean)=$(boot)
 113
 114 prepare: include/asm-ppc64/offsets.h
 115
 116 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
 117                                    include/config/MARKER
 118
 119 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
 120         $(call filechk,gen-asm-offsets)
 121
 122 define archhelp
 123   echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 124   echo  '  zImage.initrd- Compressed kernel image with initrd attached,'
 125   echo  '                  sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
 126   echo  '                  (arch/$(ARCH)/boot/zImage.initrd)'
 127 endef
 128
 129 CLEAN_FILES += include/asm-ppc64/offsets.h