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 HAS_BIARCH      := $(call cc-option-yn, -m64)
  19 ifeq ($(HAS_BIARCH),y)
  20 AS              := $(AS) -a64
  21 LD              := $(LD) -m elf64ppc
  22 CC              := $(CC) -m64
  23 endif
  24
  25 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
  26
  27 ifeq ($(new_nm),y)
  28 NM              := $(NM) --synthetic
  29 endif
  30
  31 CHECKFLAGS      += -m64 -D__powerpc__
  32
  33 LDFLAGS         := -m elf64ppc
  34 LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
  35 CFLAGS          += -msoft-float -pipe -mminimal-toc -mtraceback=none
  36
  37 ifeq ($(CONFIG_POWER4_ONLY),y)
  38         CFLAGS += $(call cc-option,-mcpu=power4)
  39 else
  40         CFLAGS += $(call cc-option,-mtune=power4)
  41 endif
  42
  43 # Enable unit-at-a-time mode when possible. It shrinks the
  44 # kernel considerably.
  45 CFLAGS += $(call cc-option,-funit-at-a-time)
  46
  47 head-y := arch/ppc64/kernel/head.o
  48
  49 libs-y                          += arch/ppc64/lib/
  50 core-y                          += arch/ppc64/kernel/
  51 core-y                          += arch/ppc64/mm/
  52 core-$(CONFIG_XMON)             += arch/ppc64/xmon/
  53 drivers-$(CONFIG_OPROFILE)      += arch/ppc64/oprofile/
  54
  55 boot := arch/ppc64/boot
  56
  57 boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
  58 boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
  59 $(boottarget-y): vmlinux
  60         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
  61
  62 bootimage-$(CONFIG_PPC_PSERIES) := zImage
  63 bootimage-$(CONFIG_PPC_ISERIES) := vmlinux
  64 BOOTIMAGE := $(bootimage-y)
  65 install: vmlinux
  66         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(BOOTIMAGE) $@
  67
  68 all: $(BOOTIMAGE)
  69
  70 archclean:
  71         $(Q)$(MAKE) $(clean)=$(boot)
  72
  73 prepare: include/asm-ppc64/offsets.h
  74
  75 arch/ppc64/kernel/asm-offsets.s: include/asm include/linux/version.h \
  76                                    include/config/MARKER
  77
  78 include/asm-ppc64/offsets.h: arch/ppc64/kernel/asm-offsets.s
  79         $(call filechk,gen-asm-offsets)
  80
  81 define archhelp
  82   echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
  83   echo  '  zImage.initrd- Compressed kernel image with initrd attached,'
  84   echo  '                  sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
  85   echo  '                  (arch/$(ARCH)/boot/zImage.initrd)'
  86 endef
  87
  88 CLEAN_FILES += include/asm-ppc64/offsets.h