arch/powerpc/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 #
  14
  15 HAS_BIARCH      := $(call cc-option-yn, -m32)
  16
  17 # Set default 32 bits cross compilers for vdso and boot wrapper
  18 CROSS32_COMPILE ?=
  19
  20 CROSS32CC               := $(CROSS32_COMPILE)gcc
  21 CROSS32AS               := $(CROSS32_COMPILE)as
  22 CROSS32LD               := $(CROSS32_COMPILE)ld
  23 CROSS32OBJCOPY          := $(CROSS32_COMPILE)objcopy
  24
  25 ifeq ($(HAS_BIARCH),y)
  26 ifeq ($(CROSS32_COMPILE),)
  27 CROSS32CC       := $(CC) -m32
  28 CROSS32AS       := $(AS) -a32
  29 CROSS32LD       := $(LD) -m elf32ppc
  30 CROSS32OBJCOPY  := $(OBJCOPY)
  31 endif
  32 endif
  33
  34 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
  35
  36 KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
  37
  38 ifeq ($(CONFIG_PPC64),y)
  39 OLDARCH := ppc64
  40 SZ      := 64
  41
  42 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
  43
  44 ifeq ($(new_nm),y)
  45 NM              := $(NM) --synthetic
  46 endif
  47
  48 else
  49 OLDARCH := ppc
  50 SZ      := 32
  51 endif
  52
  53 UTS_MACHINE := $(OLDARCH)
  54
  55 ifeq ($(HAS_BIARCH),y)
  56 override AS     += -a$(SZ)
  57 override LD     += -m elf$(SZ)ppc
  58 override CC     += -m$(SZ)
  59 endif
  60
  61 LDFLAGS_vmlinux := -Bstatic
  62
  63 # The -Iarch/$(ARCH)/include is temporary while we are merging
  64 CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
  65 AFLAGS-$(CONFIG_PPC32)  := -Iarch/$(ARCH)
  66 CFLAGS-$(CONFIG_PPC64)  := -mminimal-toc -mtraceback=none  -mcall-aixdesc
  67 CFLAGS-$(CONFIG_PPC32)  := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
  68 CPPFLAGS        += $(CPPFLAGS-y)
  69 AFLAGS          += $(AFLAGS-y)
  70 CFLAGS          += -msoft-float -pipe $(CFLAGS-y)
  71 CPP             = $(CC) -E $(CFLAGS)
  72 # Temporary hack until we have migrated to asm-powerpc
  73 LINUXINCLUDE-$(CONFIG_PPC32)    := -Iarch/$(ARCH)/include
  74 LINUXINCLUDE    += $(LINUXINCLUDE-y)
  75
  76 CHECKFLAGS      += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
  77
  78 ifeq ($(CONFIG_PPC64),y)
  79 GCC_VERSION     := $(call cc-version)
  80 GCC_BROKEN_VEC  := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi)
  81
  82 ifeq ($(CONFIG_POWER4_ONLY),y)
  83 ifeq ($(CONFIG_ALTIVEC),y)
  84 ifeq ($(GCC_BROKEN_VEC),y)
  85         CFLAGS += $(call cc-option,-mcpu=970)
  86 else
  87         CFLAGS += $(call cc-option,-mcpu=power4)
  88 endif
  89 else
  90         CFLAGS += $(call cc-option,-mcpu=power4)
  91 endif
  92 else
  93         CFLAGS += $(call cc-option,-mtune=power4)
  94 endif
  95 endif
  96
  97 # No AltiVec instruction when building kernel
  98 CFLAGS += $(call cc-option,-mno-altivec)
  99
 100 # Enable unit-at-a-time mode when possible. It shrinks the
 101 # kernel considerably.
 102 CFLAGS += $(call cc-option,-funit-at-a-time)
 103
 104 ifndef CONFIG_FSL_BOOKE
 105 CFLAGS          += -mstring
 106 endif
 107
 108 cpu-as-$(CONFIG_PPC64BRIDGE)    += -Wa,-mppc64bridge
 109 cpu-as-$(CONFIG_4xx)            += -Wa,-m405
 110 cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
 111 cpu-as-$(CONFIG_POWER4)         += -Wa,-maltivec
 112 cpu-as-$(CONFIG_E500)           += -Wa,-me500
 113 cpu-as-$(CONFIG_E200)           += -Wa,-me200
 114
 115 AFLAGS += $(cpu-as-y)
 116 CFLAGS += $(cpu-as-y)
 117
 118 head-y                          := arch/powerpc/kernel/head_32.o
 119 head-$(CONFIG_PPC64)            := arch/powerpc/kernel/head_64.o
 120 head-$(CONFIG_8xx)              := arch/powerpc/kernel/head_8xx.o
 121 head-$(CONFIG_4xx)              := arch/powerpc/kernel/head_4xx.o
 122 head-$(CONFIG_44x)              := arch/powerpc/kernel/head_44x.o
 123 head-$(CONFIG_FSL_BOOKE)        := arch/powerpc/kernel/head_fsl_booke.o
 124
 125 head-$(CONFIG_PPC64)            += arch/powerpc/kernel/entry_64.o
 126 head-$(CONFIG_PPC_FPU)          += arch/powerpc/kernel/fpu.o
 127
 128 core-y                          += arch/powerpc/kernel/ \
 129                                    arch/powerpc/mm/ \
 130                                    arch/powerpc/lib/ \
 131                                    arch/powerpc/sysdev/ \
 132                                    arch/powerpc/platforms/
 133 core-$(CONFIG_PPC32)            += arch/ppc/kernel/
 134 core-$(CONFIG_MATH_EMULATION)   += arch/ppc/math-emu/
 135 core-$(CONFIG_XMON)             += arch/powerpc/xmon/
 136 core-$(CONFIG_APUS)             += arch/ppc/amiga/
 137 drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
 138 drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
 139 drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
 140
 141 drivers-$(CONFIG_OPROFILE)      += arch/powerpc/oprofile/
 142
 143 defaultimage-$(CONFIG_PPC32)    := zImage
 144 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 145 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
 146 KBUILD_IMAGE := $(defaultimage-y)
 147 all: $(KBUILD_IMAGE)
 148
 149 CPPFLAGS_vmlinux.lds    := -Upowerpc
 150
 151 # All the instructions talk about "make bzImage".
 152 bzImage: zImage
 153
 154 BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
 155
 156 .PHONY: $(BOOT_TARGETS)
 157
 158 boot := arch/$(ARCH)/boot
 159
 160 $(BOOT_TARGETS): vmlinux
 161         $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
 162
 163 define archhelp
 164   @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
 165   @echo '  install         - Install kernel using'
 166   @echo '                    (your) ~/bin/installkernel or'
 167   @echo '                    (distribution) /sbin/installkernel or'
 168   @echo '                    install to $$(INSTALL_PATH) and run lilo'
 169   @echo '  *_defconfig     - Select default config from arch/$(ARCH)/configs'
 170 endef
 171
 172 archclean:
 173         $(Q)$(MAKE) $(clean)=$(boot)
 174         $(Q)rm -rf arch/$(ARCH)/include
 175
 176 archprepare: checkbin
 177
 178 ifeq ($(CONFIG_PPC32),y)
 179 # Temporary hack until we have migrated to asm-powerpc
 180 include/asm: arch/$(ARCH)/include/asm
 181 arch/$(ARCH)/include/asm: FORCE
 182         $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
 183         $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
 184 endif
 185
 186 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 187 # to stdout and these checks are run even on install targets.
 188 TOUT    := .tmp_gas_check
 189 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
 190 # instructions.
 191 # gcc-3.4 and binutils-2.14 are a fatal combination.
 192 GCC_VERSION     := $(call cc-version)
 193
 194 checkbin:
 195         @if test "$(GCC_VERSION)" = "0304" ; then \
 196                 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
 197                         echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
 198                         echo 'correctly with gcc-3.4 and your version of binutils.'; \
 199                         echo '*** Please upgrade your binutils or downgrade your gcc'; \
 200                         false; \
 201                 fi ; \
 202         fi
 203         @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
 204                 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
 205                 echo 'correctly with old versions of binutils.' ; \
 206                 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
 207                 false ; \
 208         fi
 209
 210 CLEAN_FILES += $(TOUT)
 211