arch/sh/Makefile

   1 #
   2 # arch/sh/Makefile
   3 #
   4 # Copyright (C) 1999  Kaz Kojima
   5 # Copyright (C) 2002 - 2008  Paul Mundt
   6 # Copyright (C) 2002  M. R. Brown
   7 #
   8 # This file is subject to the terms and conditions of the GNU General Public
   9 # License.  See the file "COPYING" in the main directory of this archive
  10 # for more details.
  11 #
  12 ifdef cross_compiling
  13   ifeq ($(CROSS_COMPILE),)
  14     CROSS_COMPILE := $(call cc-cross-prefix, sh-linux- sh-linux-gnu- sh-unknown-linux-gnu-)
  15   endif
  16 endif
  17
  18 KBUILD_DEFCONFIG        := shx3_defconfig
  19
  20 isa-y                                   := any
  21 isa-$(CONFIG_SH_DSP)                    := sh
  22 isa-$(CONFIG_CPU_SH2)                   := sh2
  23 isa-$(CONFIG_CPU_SH2A)                  := sh2a
  24 isa-$(CONFIG_CPU_SH3)                   := sh3
  25 isa-$(CONFIG_CPU_SH4)                   := sh4
  26 isa-$(CONFIG_CPU_SH4A)                  := sh4a
  27 isa-$(CONFIG_CPU_SH4AL_DSP)             := sh4al
  28
  29 isa-$(CONFIG_SH_DSP)                    := $(isa-y)-dsp
  30 isa-y                                   := $(isa-y)-up
  31
  32 cflags-$(CONFIG_CPU_SH2)                := $(call cc-option,-m2,)
  33 cflags-$(CONFIG_CPU_J2)                 += $(call cc-option,-mj2,)
  34 cflags-$(CONFIG_CPU_SH2A)               += $(call cc-option,-m2a,) \
  35                                            $(call cc-option,-m2a-nofpu,) \
  36                                            $(call cc-option,-m4-nofpu,)
  37 cflags-$(CONFIG_CPU_SH3)                := $(call cc-option,-m3,)
  38 cflags-$(CONFIG_CPU_SH4)                := $(call cc-option,-m4,) \
  39         $(call cc-option,-mno-implicit-fp,-m4-nofpu)
  40 cflags-$(CONFIG_CPU_SH4A)               += $(call cc-option,-m4a,) \
  41                                            $(call cc-option,-m4a-nofpu,)
  42 cflags-$(CONFIG_CPU_SH4AL_DSP)          += $(call cc-option,-m4al,)
  43
  44 ifeq ($(cflags-y),)
  45 #
  46 # In the case where we are stuck with a compiler that has been uselessly
  47 # restricted to a particular ISA, a favourite default of newer GCCs when
  48 # extensive multilib targets are not provided, ensure we get the best fit
  49 # regarding FP generation. This is intentionally stupid (albeit many
  50 # orders of magnitude less than GCC's default behaviour), as anything
  51 # with a large number of multilib targets better have been built
  52 # correctly for the target in mind.
  53 #
  54 cflags-y        += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
  55                      grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
  56 # At this point, anything goes.
  57 isaflags-y      := $(call as-option,-Wa$(comma)-isa=any,)
  58 else
  59 #
  60 # -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
  61 # support it, while -Wa,-dsp by itself limits the range of usable opcodes
  62 # on certain CPU subtypes. Try the ISA variant first, and if that fails,
  63 # fall back on -Wa,-dsp for the old binutils versions. Even without DSP
  64 # opcodes, we always want the best ISA tuning the version of binutils
  65 # will provide.
  66 #
  67 isaflags-y      := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
  68
  69 isaflags-$(CONFIG_SH_DSP)               := \
  70         $(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
  71 endif
  72
  73 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -mb
  74 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += -ml
  75
  76 cflags-y        += $(call cc-option,-mno-fdpic)
  77 cflags-y        += $(isaflags-y) -ffreestanding
  78
  79 OBJCOPYFLAGS    := -O binary -R .note -R .note.gnu.build-id -R .comment \
  80                    -R .stab -R .stabstr -S
  81
  82 # Give the various platforms the opportunity to set default image types
  83 defaultimage-y                                  := zImage
  84 defaultimage-$(CONFIG_SH_SH7785LCR)             := uImage
  85 defaultimage-$(CONFIG_SH_RSK)                   := uImage
  86 defaultimage-$(CONFIG_SH_URQUELL)               := uImage
  87 defaultimage-$(CONFIG_SH_MIGOR)                 := uImage
  88 defaultimage-$(CONFIG_SH_AP325RXA)              := uImage
  89 defaultimage-$(CONFIG_SH_SH7757LCR)             := uImage
  90 defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE)  := uImage
  91 defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE)  := vmlinux
  92 defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE)  := vmlinux
  93
  94 # Set some sensible Kbuild defaults
  95 boot := arch/sh/boot
  96 KBUILD_IMAGE            := $(boot)/$(defaultimage-y)
  97
  98 #
  99 # Choosing incompatible machines durings configuration will result in
 100 # error messages during linking.
 101 #
 102 UTS_MACHINE             := sh
 103 LDFLAGS_vmlinux         += -e _stext
 104
 105 ifdef CONFIG_CPU_LITTLE_ENDIAN
 106 ld-bfd                  := elf32-sh-linux
 107 LDFLAGS_vmlinux         += --defsym jiffies=jiffies_64 --oformat $(ld-bfd)
 108 KBUILD_LDFLAGS          += -EL
 109 else
 110 ld-bfd                  := elf32-shbig-linux
 111 LDFLAGS_vmlinux         += --defsym jiffies=jiffies_64+4 --oformat $(ld-bfd)
 112 KBUILD_LDFLAGS          += -EB
 113 endif
 114
 115 export ld-bfd
 116
 117 # Mach groups
 118 machdir-$(CONFIG_SOLUTION_ENGINE)               += mach-se
 119 machdir-$(CONFIG_SH_DREAMCAST)                  += mach-dreamcast
 120 machdir-$(CONFIG_SH_SH03)                       += mach-sh03
 121 machdir-$(CONFIG_SH_MIGOR)                      += mach-migor
 122 machdir-$(CONFIG_SH_KFR2R09)                    += mach-kfr2r09
 123 machdir-$(CONFIG_SH_ECOVEC)                     += mach-ecovec24
 124 machdir-$(CONFIG_SH_SDK7786)                    += mach-sdk7786
 125 machdir-$(CONFIG_SH_X3PROTO)                    += mach-x3proto
 126 machdir-$(CONFIG_SH_LANDISK)                    += mach-landisk
 127 machdir-y                                       += mach-common
 128
 129 #
 130 # CPU header paths
 131 #
 132 # These are ordered by optimization level. A CPU family that is a subset
 133 # of another (ie, SH-2A / SH-2), is picked up first, with increasing
 134 # levels of genericness if nothing more suitable is situated in the
 135 # hierarchy.
 136 #
 137 # As an example, in order of preference, SH-2A > SH-2 > common definitions.
 138 #
 139 cpuincdir-$(CONFIG_CPU_SH2A)    += cpu-sh2a
 140 cpuincdir-$(CONFIG_CPU_SH2)     += cpu-sh2
 141 cpuincdir-$(CONFIG_CPU_SH3)     += cpu-sh3
 142 cpuincdir-$(CONFIG_CPU_SH4A)    += cpu-sh4a
 143 cpuincdir-$(CONFIG_CPU_SH4)     += cpu-sh4
 144 cpuincdir-y                     += cpu-common   # Must be last
 145
 146 drivers-y                       += arch/sh/drivers/
 147
 148 KBUILD_CPPFLAGS         += $(addprefix -I $(srctree)/arch/sh/include/, $(cpuincdir-y) $(machdir-y))
 149 KBUILD_CFLAGS           += -pipe $(cflags-y)
 150 KBUILD_AFLAGS           += $(cflags-y)
 151
 152 ifeq ($(CONFIG_MCOUNT),y)
 153   KBUILD_CFLAGS += -pg
 154 endif
 155
 156 ifeq ($(CONFIG_DWARF_UNWINDER),y)
 157   KBUILD_CFLAGS += -fasynchronous-unwind-tables
 158 endif
 159
 160 libs-y                  := arch/sh/lib/ $(libs-y)
 161
 162 BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.xz uImage.lzo \
 163                uImage.srec uImage.bin zImage vmlinux.bin vmlinux.srec \
 164                romImage
 165 PHONY += $(BOOT_TARGETS)
 166
 167 all: $(notdir $(KBUILD_IMAGE))
 168
 169 $(BOOT_TARGETS): vmlinux
 170         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 171
 172 compressed: zImage
 173
 174 archprepare:
 175         $(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
 176
 177 archheaders:
 178         $(Q)$(MAKE) $(build)=arch/sh/kernel/syscalls all
 179
 180 define archhelp
 181         @echo '  zImage                    - Compressed kernel image'
 182         @echo '  romImage                  - Compressed ROM image, if supported'
 183         @echo '  vmlinux.srec              - Create an ELF S-record'
 184         @echo '  vmlinux.bin               - Create an uncompressed binary image'
 185         @echo '* uImage                    - Alias to bootable U-Boot image'
 186         @echo '  uImage.srec               - Create an S-record for U-Boot'
 187         @echo '  uImage.bin                - Kernel-only image for U-Boot (bin)'
 188         @echo '* uImage.gz                 - Kernel-only image for U-Boot (gzip)'
 189         @echo '  uImage.bz2                - Kernel-only image for U-Boot (bzip2)'
 190         @echo '  uImage.lzma               - Kernel-only image for U-Boot (lzma)'
 191         @echo '  uImage.xz                 - Kernel-only image for U-Boot (xz)'
 192         @echo '  uImage.lzo                - Kernel-only image for U-Boot (lzo)'
 193 endef