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
  39ifndef CONFIG_FSL_BOOKE
  40KBUILD_CFLAGS   += -mstring
  41endif
  42
  43cpu-as-$(CONFIG_4xx)            += -Wa,-m405
  44cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
  45cpu-as-$(CONFIG_E500)           += -Wa,-me500
  46cpu-as-$(CONFIG_E200)           += -Wa,-me200
  47
  48KBUILD_AFLAGS += $(cpu-as-y)
  49KBUILD_CFLAGS += $(cpu-as-y)
  50
  51# Default to the common case.
  52KBUILD_DEFCONFIG := common_defconfig
  53
  54head-y                          := arch/ppc/kernel/head.o
  55head-$(CONFIG_8xx)              := arch/ppc/kernel/head_8xx.o
  56head-$(CONFIG_4xx)              := arch/ppc/kernel/head_4xx.o
  57head-$(CONFIG_44x)              := arch/ppc/kernel/head_44x.o
  58head-$(CONFIG_FSL_BOOKE)        := arch/ppc/kernel/head_fsl_booke.o
  59
  60head-$(CONFIG_PPC_FPU)          += arch/powerpc/kernel/fpu.o
  61
  62core-y                          += arch/ppc/kernel/ arch/powerpc/kernel/ \
  63                                   arch/ppc/platforms/ \
  64                                   arch/ppc/mm/ arch/ppc/lib/ \
  65                                   arch/ppc/syslib/ arch/powerpc/sysdev/ \
  66                                   arch/powerpc/lib/
  67core-$(CONFIG_4xx)              += arch/ppc/platforms/4xx/
  68core-$(CONFIG_83xx)             += arch/ppc/platforms/83xx/
  69core-$(CONFIG_85xx)             += arch/ppc/platforms/85xx/
  70core-$(CONFIG_MATH_EMULATION)   += arch/powerpc/math-emu/
  71core-$(CONFIG_XMON)             += arch/ppc/xmon/
  72drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
  73drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
  74drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
  75
  76drivers-$(CONFIG_OPROFILE)      += arch/powerpc/oprofile/
  77
  78BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
  79
  80PHONY += $(BOOT_TARGETS)
  81
  82all: uImage zImage
  83
  84CPPFLAGS_vmlinux.lds    := -Upowerpc
  85
  86# All the instructions talk about "make bzImage".
  87bzImage: zImage
  88
  89boot := arch/$(ARCH)/boot
  90
  91$(BOOT_TARGETS): vmlinux
  92        $(Q)$(MAKE) $(build)=$(boot) $@
  93
  94uImage: vmlinux
  95        $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
  96
  97define archhelp
  98  @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
  99  @echo '  uImage          - Create a bootable image for U-Boot / PPCBoot'
 100  @echo '  install         - Install kernel using'
 101  @echo '                    (your) ~/bin/installkernel or'
 102  @echo '                    (distribution) /sbin/installkernel or'
 103  @echo '                    install to $$(INSTALL_PATH) and run lilo'
 104  @echo '  *_defconfig     - Select default config from arch/$(ARCH)/ppc/configs'
 105endef
 106
 107archclean:
 108        $(Q)$(MAKE) $(clean)=arch/ppc/boot
 109        # Temporary hack until we have migrated to asm-powerpc
 110        $(Q)rm -rf arch/$(ARCH)/include
 111
 112archprepare: checkbin
 113
 114# Temporary hack until we have migrated to asm-powerpc
 115include/asm: arch/$(ARCH)/include/asm
 116arch/$(ARCH)/include/asm:
 117        $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
 118        $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
 119
 120# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 121# to stdout and these checks are run even on install targets.
 122TOUT    := .tmp_gas_check
 123# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
 124# instructions.
 125# gcc-3.4 and binutils-2.14 are a fatal combination.
 126
 127checkbin:
 128        @if test "$(call cc-version)" = "0304" ; then \
 129                if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
 130                        echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
 131                        echo 'correctly with gcc-3.4 and your version of binutils.'; \
 132                        echo '*** Please upgrade your binutils or downgrade your gcc'; \
 133                        false; \
 134                fi ; \
 135        fi
 136        @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
 137                echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
 138                echo 'correctly with old versions of binutils.' ; \
 139                echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
 140                false ; \
 141        fi
 142
 143CLEAN_FILES += $(TOUT)
 144
 145