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