LXR linux/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.
  14KERNELLOAD      := $(CONFIG_KERNEL_START)
  15
  16HAS_BIARCH      := $(call cc-option-yn, -m32)
  17ifeq ($(HAS_BIARCH),y)
  18AS              := $(AS) -a32
  19LD              := $(LD) -m elf32ppc
  20CC              := $(CC) -m32
  21endif
  22
  23LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
  24# The -Iarch/$(ARCH)/include is temporary while we are merging
  25KBUILD_CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
  26KBUILD_AFLAGS   += -Iarch/$(ARCH)
  27KBUILD_CFLAGS   += -Iarch/$(ARCH) -msoft-float -pipe \
  28                -ffixed-r2 -mmultiple
  29
  30# No AltiVec instruction when building kernel
  31KBUILD_CFLAGS   += $(call cc-option, -mno-altivec)
  32
  33CPP             = $(CC) -E $(KBUILD_CFLAGS)
  34# Temporary hack until we have migrated to asm-powerpc
  35LINUXINCLUDE    += -Iarch/$(ARCH)/include
  36
  37CHECKFLAGS      += -D__powerpc__
  38
  39cpu-as-$(CONFIG_4xx)            += -Wa,-m405
  40cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
  41
  42KBUILD_AFLAGS += $(cpu-as-y)
  43KBUILD_CFLAGS += $(cpu-as-y)
  44
  45# Default to the common case.
  46KBUILD_DEFCONFIG := common_defconfig
  47
  48head-y                          := arch/ppc/kernel/head.o
  49head-$(CONFIG_8xx)              := arch/ppc/kernel/head_8xx.o
  50head-$(CONFIG_4xx)              := arch/ppc/kernel/head_4xx.o
  51head-$(CONFIG_44x)              := arch/ppc/kernel/head_44x.o
  52
  53head-$(CONFIG_PPC_FPU)          += arch/powerpc/kernel/fpu.o
  54
  55core-y                          += arch/ppc/kernel/ arch/powerpc/kernel/ \
  56                                   arch/ppc/platforms/ \
  57                                   arch/ppc/mm/ arch/ppc/lib/ \
  58                                   arch/ppc/syslib/ arch/powerpc/sysdev/ \
  59                                   arch/powerpc/lib/
  60core-$(CONFIG_4xx)              += arch/ppc/platforms/4xx/
  61core-$(CONFIG_MATH_EMULATION)   += arch/powerpc/math-emu/
  62core-$(CONFIG_XMON)             += arch/ppc/xmon/
  63drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
  64drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
  65drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
  66
  67drivers-$(CONFIG_OPROFILE)      += arch/powerpc/oprofile/
  68
  69BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
  70
  71PHONY += $(BOOT_TARGETS)
  72
  73all: uImage zImage
  74
  75CPPFLAGS_vmlinux.lds    := -Upowerpc
  76
  77# All the instructions talk about "make bzImage".
  78bzImage: zImage
  79
  80boot := arch/$(ARCH)/boot
  81
  82$(BOOT_TARGETS): vmlinux
  83        $(Q)$(MAKE) $(build)=$(boot) $@
  84
  85uImage: vmlinux
  86        $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
  87
  88define archhelp
  89  @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
  90  @echo '  uImage          - Create a bootable image for U-Boot / PPCBoot'
  91  @echo '  install         - Install kernel using'
  92  @echo '                    (your) ~/bin/installkernel or'
  93  @echo '                    (distribution) /sbin/installkernel or'
  94  @echo '                    install to $$(INSTALL_PATH) and run lilo'
  95  @echo '  *_defconfig     - Select default config from arch/$(ARCH)/ppc/configs'
  96endef
  97
  98archclean:
  99        $(Q)$(MAKE) $(clean)=arch/ppc/boot
 100        # Temporary hack until we have migrated to asm-powerpc
 101        $(Q)rm -rf arch/$(ARCH)/include
 102
 103archprepare: checkbin
 104
 105# Temporary hack until we have migrated to asm-powerpc
 106include/asm: arch/$(ARCH)/include/asm
 107arch/$(ARCH)/include/asm:
 108        $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
 109        $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
 110
 111# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 112# to stdout and these checks are run even on install targets.
 113TOUT    := .tmp_gas_check
 114# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
 115# instructions.
 116# gcc-3.4 and binutils-2.14 are a fatal combination.
 117
 118checkbin:
 119        @if test "$(call cc-version)" = "0304" ; then \
 120                if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
 121                        echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
 122                        echo 'correctly with gcc-3.4 and your version of binutils.'; \
 123                        echo '*** Please upgrade your binutils or downgrade your gcc'; \
 124                        false; \
 125                fi ; \
 126        fi
 127        @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
 128                echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
 129                echo 'correctly with old versions of binutils.' ; \
 130                echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
 131                false ; \
 132        fi
 133
 134CLEAN_FILES += $(TOUT)
 135
 136