arch/ppc/Makefile

   1 # This file is included by the global makefile so that you can add your own
   2 # architecture-specific flags and dependencies.
   3 #
   4 # This file is subject to the terms and conditions of the GNU General Public
   5 # License.  See the file "COPYING" in the main directory of this archive
   6 # for more details.
   7 #
   8 # Copyright (C) 1994 by Linus Torvalds
   9 # Changes for PPC by Gary Thomas
  10 # Rewritten by Cort Dougan and Paul Mackerras
  11 #
  12
  13 # This must match PAGE_OFFSET in include/asm-ppc/page.h.
  14 KERNELLOAD      := $(CONFIG_KERNEL_START)
  15
  16 HAS_BIARCH      := $(call cc-option-yn, -m32)
  17 ifeq ($(HAS_BIARCH),y)
  18 AS              := $(AS) -a32
  19 LD              := $(LD) -m elf32ppc
  20 CC              := $(CC) -m32
  21 endif
  22
  23 LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
  24 CPPFLAGS        += -Iarch/$(ARCH) -Iinclude3
  25 AFLAGS          += -Iarch/$(ARCH)
  26 CFLAGS          += -Iarch/$(ARCH) -msoft-float -pipe \
  27                 -ffixed-r2 -mmultiple
  28 CPP             = $(CC) -E $(CFLAGS)
  29 # Temporary hack until we have migrated to asm-powerpc
  30 LINUXINCLUDE    += -Iinclude3
  31
  32 CHECKFLAGS      += -D__powerpc__
  33
  34 ifndef CONFIG_FSL_BOOKE
  35 CFLAGS          += -mstring
  36 endif
  37
  38 cpu-as-$(CONFIG_PPC64BRIDGE)    += -Wa,-mppc64bridge
  39 cpu-as-$(CONFIG_4xx)            += -Wa,-m405
  40 cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
  41 cpu-as-$(CONFIG_POWER4)         += -Wa,-maltivec
  42 cpu-as-$(CONFIG_E500)           += -Wa,-me500
  43 cpu-as-$(CONFIG_E200)           += -Wa,-me200
  44
  45 AFLAGS += $(cpu-as-y)
  46 CFLAGS += $(cpu-as-y)
  47
  48 # Default to the common case.
  49 KBUILD_DEFCONFIG := common_defconfig
  50
  51 head-y                          := arch/ppc/kernel/head.o
  52 head-$(CONFIG_8xx)              := arch/ppc/kernel/head_8xx.o
  53 head-$(CONFIG_4xx)              := arch/ppc/kernel/head_4xx.o
  54 head-$(CONFIG_44x)              := arch/ppc/kernel/head_44x.o
  55 head-$(CONFIG_FSL_BOOKE)        := arch/ppc/kernel/head_fsl_booke.o
  56
  57 head-$(CONFIG_6xx)              += arch/ppc/kernel/idle_6xx.o
  58 head-$(CONFIG_POWER4)           += arch/ppc/kernel/idle_power4.o
  59 head-$(CONFIG_PPC_FPU)          += arch/ppc/kernel/fpu.o
  60
  61 core-y                          += arch/ppc/kernel/ arch/ppc/platforms/ \
  62                                    arch/ppc/mm/ arch/ppc/lib/ arch/ppc/syslib/
  63 core-$(CONFIG_4xx)              += arch/ppc/platforms/4xx/
  64 core-$(CONFIG_83xx)             += arch/ppc/platforms/83xx/
  65 core-$(CONFIG_85xx)             += arch/ppc/platforms/85xx/
  66 core-$(CONFIG_MATH_EMULATION)   += arch/ppc/math-emu/
  67 core-$(CONFIG_XMON)             += arch/ppc/xmon/
  68 core-$(CONFIG_APUS)             += arch/ppc/amiga/
  69 drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
  70 drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
  71 drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
  72
  73 drivers-$(CONFIG_OPROFILE)      += arch/ppc/oprofile/
  74
  75 BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
  76
  77 .PHONY: $(BOOT_TARGETS)
  78
  79 all: uImage zImage
  80
  81 CPPFLAGS_vmlinux.lds    := -Upowerpc
  82
  83 # All the instructions talk about "make bzImage".
  84 bzImage: zImage
  85
  86 boot := arch/$(ARCH)/boot
  87
  88 $(BOOT_TARGETS): vmlinux
  89         $(Q)$(MAKE) $(build)=$(boot) $@
  90
  91 uImage: vmlinux
  92         $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
  93
  94 define archhelp
  95   @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
  96   @echo '  uImage          - Create a bootable image for U-Boot / PPCBoot'
  97   @echo '  install         - Install kernel using'
  98   @echo '                    (your) ~/bin/installkernel or'
  99   @echo '                    (distribution) /sbin/installkernel or'
 100   @echo '                    install to $$(INSTALL_PATH) and run lilo'
 101   @echo '  *_defconfig     - Select default config from arch/$(ARCH)/ppc/configs'
 102 endef
 103
 104 archclean:
 105         $(Q)$(MAKE) $(clean)=arch/ppc/boot
 106         $(Q)rm -rf include3
 107
 108 prepare: include/asm-$(ARCH)/offsets.h checkbin
 109
 110 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 111                                    include/config/MARKER
 112
 113 include/asm-$(ARCH)/offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 114         $(call filechk,gen-asm-offsets)
 115
 116 # Temporary hack until we have migrated to asm-powerpc
 117 include/asm: include3/asm
 118 include3/asm:
 119         $(Q)if [ ! -d include3 ]; then mkdir -p include3; fi
 120         $(Q)ln -fsn $(srctree)/include/asm-powerpc include3/asm
 121
 122 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 123 # to stdout and these checks are run even on install targets.
 124 TOUT    := .tmp_gas_check
 125 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
 126 # instructions.
 127 # gcc-3.4 and binutils-2.14 are a fatal combination.
 128 GCC_VERSION     := $(call cc-version)
 129
 130 checkbin:
 131         @if test "$(GCC_VERSION)" = "0304" ; then \
 132                 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
 133                         echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
 134                         echo 'correctly with gcc-3.4 and your version of binutils.'; \
 135                         echo '*** Please upgrade your binutils or downgrade your gcc'; \
 136                         false; \
 137                 fi ; \
 138         fi
 139         @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
 140                 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
 141                 echo 'correctly with old versions of binutils.' ; \
 142                 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
 143                 false ; \
 144         fi
 145
 146 CLEAN_FILES +=  include/asm-$(ARCH)/offsets.h \
 147                 arch/$(ARCH)/kernel/asm-offsets.s \
 148                 $(TOUT)
 149