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 $(KERNELLOAD)
  56 CFLAGS          += -msoft-float -pipe -mminimal-toc -mtraceback=none \
  57                    -mcall-aixdesc
  58
  59 ifeq ($(CONFIG_POWER4_ONLY),y)
  60 ifeq ($(CONFIG_ALTIVEC),y)
  61         CFLAGS += $(call cc-option,-mcpu=970)
  62 else
  63         CFLAGS += $(call cc-option,-mcpu=power4)
  64 endif
  65 else
  66         CFLAGS += $(call cc-option,-mtune=power4)
  67 endif
  68
  69 # Enable unit-at-a-time mode when possible. It shrinks the
  70 # kernel considerably.
  71 CFLAGS += $(call cc-option,-funit-at-a-time)
  72
  73 head-y := arch/ppc64/kernel/head.o
  74
  75 libs-y                          += arch/ppc64/lib/
  76 core-y                          += arch/ppc64/kernel/
  77 core-y                          += arch/ppc64/mm/
  78 core-$(CONFIG_XMON)             += arch/ppc64/xmon/
  79 drivers-$(CONFIG_OPROFILE)      += arch/ppc64/oprofile/
  80
  81 boot := arch/ppc64/boot
  82
  83 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
  84 boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
  85 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
  86 $(boottarget-y): vmlinux
  87         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  88
  89 bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
  90 bootimage-$(CONFIG_PPC_PMAC) := vmlinux
  91 bootimage-$(CONFIG_PPC_MAPLE) := $(boot)/zImage
  92 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
  93 BOOTIMAGE := $(bootimage-y)
  94 install: vmlinux
  95         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
  96
  97 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
  98 defaultimage-$(CONFIG_PPC_PMAC) := vmlinux
  99 defaultimage-$(CONFIG_PPC_MAPLE) := zImage
 100 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 101 KBUILD_IMAGE := $(defaultimage-y)
 102 all: $(KBUILD_IMAGE)
 103
 104 archclean:
 105         $(Q)$(MAKE) $(clean)=$(boot)
 106
 107 prepare: include/asm-ppc64/offsets.h
 108
 109 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
 110                                    include/config/MARKER
 111
 112 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
 113         $(call filechk,gen-asm-offsets)
 114
 115 define archhelp
 116   echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 117   echo  '  zImage.initrd- Compressed kernel image with initrd attached,'
 118   echo  '                  sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
 119   echo  '                  (arch/$(ARCH)/boot/zImage.initrd)'
 120 endef
 121
 122 CLEAN_FILES += include/asm-ppc64/offsets.h