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)
  25 AFLAGS          += -Iarch/$(ARCH)
  26 CFLAGS          += -Iarch/$(ARCH) -msoft-float -pipe \
  27                 -ffixed-r2 -mmultiple
  28 CPP             = $(CC) -E $(CFLAGS)
  29
  30 CHECKFLAGS      += -D__powerpc__
  31
  32 ifndef CONFIG_E500
  33 CFLAGS          += -mstring
  34 endif
  35
  36 cpu-as-$(CONFIG_PPC64BRIDGE)    += -Wa,-mppc64bridge
  37 cpu-as-$(CONFIG_4xx)            += -Wa,-m405
  38 cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
  39 cpu-as-$(CONFIG_POWER4)         += -Wa,-maltivec
  40 cpu-as-$(CONFIG_E500)           += -Wa,-me500
  41
  42 AFLAGS += $(cpu-as-y)
  43 CFLAGS += $(cpu-as-y)
  44
  45 head-y                          := arch/ppc/kernel/head.o
  46 head-$(CONFIG_8xx)              := arch/ppc/kernel/head_8xx.o
  47 head-$(CONFIG_4xx)              := arch/ppc/kernel/head_4xx.o
  48 head-$(CONFIG_44x)              := arch/ppc/kernel/head_44x.o
  49 head-$(CONFIG_E500)             := arch/ppc/kernel/head_e500.o
  50
  51 head-$(CONFIG_6xx)              += arch/ppc/kernel/idle_6xx.o
  52 head-$(CONFIG_POWER4)           += arch/ppc/kernel/idle_power4.o
  53
  54 core-y                          += arch/ppc/kernel/ arch/ppc/platforms/ \
  55                                    arch/ppc/mm/ arch/ppc/lib/ arch/ppc/syslib/
  56 core-$(CONFIG_4xx)              += arch/ppc/platforms/4xx/
  57 core-$(CONFIG_85xx)             += arch/ppc/platforms/85xx/
  58 core-$(CONFIG_MATH_EMULATION)   += arch/ppc/math-emu/
  59 core-$(CONFIG_XMON)             += arch/ppc/xmon/
  60 core-$(CONFIG_APUS)             += arch/ppc/amiga/
  61 drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
  62 drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
  63 drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
  64
  65 drivers-$(CONFIG_OPROFILE)      += arch/ppc/oprofile/
  66
  67 BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
  68
  69 .PHONY: $(BOOT_TARGETS)
  70
  71 all: zImage
  72
  73 CPPFLAGS_vmlinux.lds    := -Upowerpc
  74
  75 # All the instructions talk about "make bzImage".
  76 bzImage: zImage
  77
  78 boot := arch/$(ARCH)/boot
  79
  80 $(BOOT_TARGETS): vmlinux
  81         $(Q)$(MAKE) $(build)=$(boot) $@
  82
  83 uImage: vmlinux
  84         $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
  85
  86 define archhelp
  87   @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
  88   @echo '  uImage          - Create a bootable image for U-Boot / PPCBoot'
  89   @echo '  install         - Install kernel using'
  90   @echo '                    (your) ~/bin/installkernel or'
  91   @echo '                    (distribution) /sbin/installkernel or'
  92   @echo '                    install to $$(INSTALL_PATH) and run lilo'
  93   @echo '  *_defconfig     - Select default config from arch/$(ARCH)/ppc/configs'
  94 endef
  95
  96 archclean:
  97         $(Q)$(MAKE) $(clean)=arch/ppc/boot
  98
  99 prepare: include/asm-$(ARCH)/offsets.h checkbin
 100
 101 arch/$(ARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
 102                                    include/config/MARKER
 103
 104 include/asm-$(ARCH)/offsets.h: arch/$(ARCH)/kernel/asm-offsets.s
 105         $(call filechk,gen-asm-offsets)
 106
 107 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 108 # to stdout and these checks are run even on install targets.
 109 TOUT    := .tmp_gas_check
 110 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
 111 # instructions.
 112 AS_ALTIVEC      := $(shell echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; echo $$?)
 113 # gcc-3.4 and binutils-2.14 are a fatal combination.
 114 GCC_VERSION     := $(call cc-version)
 115 BAD_GCC_AS      := $(shell echo mftb 5 | $(AS) -mppc -many -o $(TOUT) >/dev/null 2>&1 && echo 0 || echo 1)
 116
 117 checkbin:
 118 ifeq ($(GCC_VERSION)$(BAD_GCC_AS),03041)
 119         @echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '
 120         @echo 'correctly with gcc-3.4 and your version of binutils.'
 121         @echo '*** Please upgrade your binutils or downgrade your gcc'
 122         @false
 123 endif
 124 ifneq ($(AS_ALTIVEC),0)
 125         echo $(AS_ALTIVEC)
 126         @echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '
 127         @echo 'correctly with old versions of binutils.'
 128         @echo '*** Please upgrade your binutils to 2.12.1 or newer'
 129         @false
 130 endif
 131         @true
 132
 133 CLEAN_FILES +=  include/asm-$(ARCH)/offsets.h \
 134                 arch/$(ARCH)/kernel/asm-offsets.s \
 135                 $(TOUT)
 136