arch/arm/Makefile

   1 #
   2 # arch/arm/Makefile
   3 #
   4 # This file is included by the global makefile so that you can add your own
   5 # architecture-specific flags and dependencies. Remember to do have actions
   6 # for "archclean" and "archdep" for cleaning up and making dependencies for
   7 # this architecture
   8 #
   9 # This file is subject to the terms and conditions of the GNU General Public
  10 # License.  See the file "COPYING" in the main directory of this archive
  11 # for more details.
  12 #
  13 # Copyright (C) 1995-2000 by Russell King
  14
  15 OBJCOPY         := $(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
  16 CPP             := $(CC) -E
  17 LINKFLAGS       := -p -X -T arch/arm/vmlinux.lds
  18 ARCHCC          := $(word 1,$(CC))
  19
  20 AFLAGS          += -mno-fpu
  21 CFLAGS_PIPE     := -pipe
  22 CFLAGS          := $(CFLAGS) $(CFLAGS_PIPE) -msoft-float
  23
  24 ifdef CONFIG_FRAME_POINTER
  25 CFLAGS          := $(CFLAGS:-fomit-frame-pointer=)
  26 endif
  27
  28 ifdef CONFIG_DEBUG_INFO
  29 CFLAGS          += -g
  30 endif
  31
  32 GZFLAGS         = -9
  33
  34 # Ensure this is ld "2.9.4" or later
  35 NEW_LINKER      := $(shell $(LD) --gc-sections --version >/dev/null 2>&1; echo $$?)
  36
  37 ifneq ($(NEW_LINKER),0)
  38 dummy:;         @echo '*** ${VERSION}.${PATCHLEVEL} kernels no longer build correctly with old versions of binutils.'
  39                 @echo '*** Please upgrade your binutils to 2.9.5.'
  40                 @false
  41 endif
  42
  43 # GCC 2.7 uses different options to later compilers; sort out which we have
  44 NEW_GCC         := $(shell $(CC) --version 2>&1 | grep '^2\.7' > /dev/null; echo $$?)
  45
  46 #
  47 # select flags depending on the compiler
  48 #
  49 ifneq ($(NEW_GCC),0)
  50 CFLAGS                  += -mshort-load-bytes
  51 CFLAGS_PROC_CPU_26      := -mcpu=arm3 -mapcs-26 -Os
  52 CFLAGS_PROC_CPU_32v3    := -march=armv3
  53 CFLAGS_PROC_CPU_32v4    := -march=armv4
  54 else
  55 CFLAGS                  += -DNO_TEXT_SECTIONS
  56 CFLAGS_PROC_CPU_26      := -m3
  57 CFLAGS_PROC_CPU_32v3    := -m6
  58 CFLAGS_PROC_CPU_32v4    := -m6
  59 endif
  60
  61 #
  62 # Select CPU dependent flags
  63 #
  64 ifeq ($(CONFIG_CPU_26),y)
  65  PROCESSOR       = armo
  66  TEXTADDR        = 0x02080000
  67  CFLAGS         += $(CFLAGS_PROC_CPU_26)
  68  AFLAGS         += -mapcs-26
  69 endif
  70
  71 ifeq ($(CONFIG_CPU_32),y)
  72  PROCESSOR       = armv
  73  TEXTADDR        = 0xC0008000
  74  ifeq ($(CONFIG_CPU_32v4),y)
  75   CFLAGS        += $(CFLAGS_PROC_CPU_32v4)
  76   AFLAGS        += -mapcs-32 -marmv4
  77  else
  78   CFLAGS        += $(CFLAGS_PROC_CPU_32v3)
  79   AFLAGS        += -mapcs-32 -marmv3m
  80  endif
  81
  82  opt-$(CONFIG_CPU_ARM6)         := -mtune=arm6
  83  opt-$(CONFIG_CPU_ARM7)         := -mtune=arm7
  84  opt-$(CONFIG_CPU_ARM720)       := -mtune=arm7tdmi
  85  opt-$(CONFIG_CPU_ARM920)       := -mtune=arm9tdmi
  86  opt-$(CONFIG_CPU_SA110)        := -mtune=strongarm110
  87  opt-$(CONFIG_CPU_SA1100)       := -mtune=strongarm110
  88
  89  ifneq ($(NEW_GCC),0)
  90  CFLAGS += $(opt-y)
  91  endif
  92 endif
  93
  94 LIBGCC          := $(shell $(CC) $(CFLAGS) --print-libgcc-file-name)
  95
  96 export  LIBGCC MACHINE PROCESSOR TEXTADDR GZFLAGS
  97
  98 ifeq ($(CONFIG_ARCH_ARCA5K),y)
  99 MACHINE          = arc
 100 endif
 101
 102 ifeq ($(CONFIG_ARCH_RPC),y)
 103 MACHINE          = rpc
 104 endif
 105
 106 ifeq ($(CONFIG_ARCH_EBSA110),y)
 107 MACHINE          = ebsa110
 108 endif
 109
 110 ifeq ($(CONFIG_ARCH_CLPS7500),y)
 111 MACHINE          = clps7500
 112 INCDIR           = cl7500
 113 endif
 114
 115 ifeq ($(CONFIG_FOOTBRIDGE),y)
 116 MACHINE          = footbridge
 117 INCDIR           = ebsa285
 118 endif
 119
 120 ifeq ($(CONFIG_ARCH_CO285),y)
 121 TEXTADDR         = 0x60008000
 122 MACHINE          = footbridge
 123 INCDIR           = ebsa285
 124 endif
 125
 126 ifeq ($(CONFIG_ARCH_NEXUSPCI),y)
 127 MACHINE          = nexuspci
 128 endif
 129
 130 ifeq ($(CONFIG_ARCH_SHARK),y)
 131 MACHINE          = shark
 132 endif
 133
 134 ifeq ($(CONFIG_ARCH_SA1100),y)
 135 MACHINE          = sa1100
 136 endif
 137
 138 ifeq ($(CONFIG_ARCH_L7200),y)
 139 MACHINE          = l7200
 140 endif
 141
 142 ifeq ($(CONFIG_ARCH_INTEGRATOR),y)
 143 MACHINE          = integrator
 144 endif
 145
 146 # Only set INCDIR if its not already defined above
 147 # Grr, ?= doesn't work as all the other assignment operators do.  Make bug?
 148 ifeq ($(origin INCDIR), undefined)
 149 INCDIR          := $(MACHINE)
 150 endif
 151
 152 # If we have a machine-specific directory, then include it in the build.
 153 MACHDIR         := arch/arm/mach-$(MACHINE)
 154 ifeq ($(MACHDIR),$(wildcard $(MACHDIR)))
 155 SUBDIRS         += $(MACHDIR)
 156 CORE_FILES      := $(MACHDIR)/$(MACHINE).o $(CORE_FILES)
 157 endif
 158
 159 HEAD            := arch/arm/kernel/head-$(PROCESSOR).o \
 160                    arch/arm/kernel/init_task.o
 161 SUBDIRS         += arch/arm/kernel arch/arm/mm arch/arm/lib \
 162                    arch/arm/nwfpe
 163 CORE_FILES      := arch/arm/kernel/kernel.o arch/arm/mm/mm.o $(CORE_FILES)
 164 LIBS            := arch/arm/lib/lib.o arch/arm/lib/lib.a $(LIBS) $(LIBGCC)
 165
 166 ifeq ($(CONFIG_NWFPE),y)
 167 LIBS            := arch/arm/nwfpe/math-emu.o $(LIBS)
 168 endif
 169
 170 ifeq ($(CONFIG_ARCH_ACORN),y)
 171 SUBDIRS         += drivers/acorn
 172 DRIVERS         += drivers/acorn/block/acorn-block.a
 173 DRIVERS         += drivers/acorn/char/acorn-char.o
 174 DRIVERS         += drivers/acorn/net/acorn-net.o
 175 DRIVERS         += drivers/acorn/scsi/acorn-scsi.a
 176 endif
 177
 178 ifeq ($(CONFIG_ARCH_CLPS7500),y)
 179 SUBDIRS         += drivers/acorn/char
 180 DRIVERS         += drivers/acorn/char/acorn-char.o
 181 endif
 182
 183 MAKEBOOT         = $(MAKE) -C arch/$(ARCH)/boot
 184
 185 # The following is a hack to get 'constants.h' up
 186 # to date before starting compilation
 187
 188 $(patsubst %, _dir_%, $(SUBDIRS)) init/main.o init/version.o : \
 189         include/asm-arm/mach-types.h
 190
 191 $(patsubst %, _dir_%, $(SUBDIRS)) : constants
 192
 193 include/asm-arm/mach-types.h: arch/arm/tools/mach-types  \
 194                               arch/arm/tools/gen-mach-types
 195         @awk -f arch/arm/tools/gen-mach-types arch/arm/tools/mach-types > $@
 196
 197 constants: dummy
 198         @$(MAKE) -C arch/arm/lib constants.h
 199
 200 symlinks: archsymlinks
 201
 202 archsymlinks:
 203         $(RM) include/asm-arm/arch include/asm-arm/proc
 204         (cd include/asm-arm; ln -sf arch-$(INCDIR) arch; ln -sf proc-$(PROCESSOR) proc)
 205
 206 vmlinux: arch/arm/vmlinux.lds
 207
 208 arch/arm/vmlinux.lds: arch/arm/vmlinux-$(PROCESSOR).lds.in dummy
 209         @sed 's/TEXTADDR/$(TEXTADDR)/' <$< >$@
 210
 211 arch/arm/kernel arch/arm/mm arch/arm/lib: dummy
 212         $(MAKE) CFLAGS="$(CFLAGS) $(CFLAGS_KERNEL)" $(subst $@, _dir_$@, $@)
 213
 214 bzImage zImage zinstall Image bootpImage install: vmlinux
 215         @$(MAKEBOOT) $@
 216
 217 archmrproper:
 218         $(RM) include/asm-arm/arch include/asm-arm/proc
 219
 220 archclean:
 221         @$(MAKEBOOT) clean
 222         $(RM) arch/arm/lib/constants.h arch/arm/vmlinux.lds
 223         $(RM) include/asm-arm/mach-types.h
 224
 225 archdep: archsymlinks
 226         @$(MAKEBOOT) dep
 227
 228 # My testing targets (that short circuit a few dependencies)
 229 zImg:;  @$(MAKEBOOT) zImage
 230 Img:;   @$(MAKEBOOT) Image
 231 i:;     @$(MAKEBOOT) install
 232 zi:;    @$(MAKEBOOT) zinstall
 233
 234 #
 235 # Configuration targets.  Use these to select a
 236 # configuration for your architecture
 237 CFGS=   a5k_config              ebsa110_config          \
 238         footbridge_config       rpc_config              \
 239         brutus_config           victor_config           \
 240         empeg_config            thinclient_config       \
 241         assabet_config          lart_config             \
 242         cerf_config             lusl7200_config
 243
 244 $(CFGS):
 245         @( \
 246         CFG=$(@:_config=); \
 247         if [ -f arch/arm/def-configs/$$CFG ]; then \
 248           $(RM) arch/arm/defconfig; \
 249           cp arch/arm/def-configs/$$CFG arch/arm/defconfig; \
 250           echo "*** Default configuration for $$CFG installed"; \
 251           echo "*** Next, you may run 'make oldconfig'"; \
 252         else \
 253           echo "$$CFG does not exist"; \
 254         fi; \
 255         )