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.
   6 #
   7 # This file is subject to the terms and conditions of the GNU General Public
   8 # License.  See the file "COPYING" in the main directory of this archive
   9 # for more details.
  10 #
  11 # Copyright (C) 1995-2001 by Russell King
  12
  13 # Ensure linker flags are correct
  14 LDFLAGS         :=
  15
  16 LDFLAGS_vmlinux :=-p --no-undefined -X
  17 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  18 LDFLAGS_vmlinux += --be8
  19 endif
  20
  21 OBJCOPYFLAGS    :=-O binary -R .comment -S
  22 GZFLAGS         :=-9
  23 #KBUILD_CFLAGS  +=-pipe
  24
  25 # Never generate .eh_frame
  26 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  27
  28 # Do not use arch/arm/defconfig - it's always outdated.
  29 # Select a platform tht is kept up-to-date
  30 KBUILD_DEFCONFIG := versatile_defconfig
  31
  32 # defines filename extension depending memory management type.
  33 ifeq ($(CONFIG_MMU),)
  34 MMUEXT          := -nommu
  35 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  36 endif
  37
  38 ifeq ($(CONFIG_FRAME_POINTER),y)
  39 KBUILD_CFLAGS   +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
  40 endif
  41
  42 ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
  43 KBUILD_CFLAGS   +=-fstack-protector
  44 endif
  45
  46 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  47 KBUILD_CPPFLAGS += -mbig-endian
  48 AS              += -EB
  49 LD              += -EB
  50 else
  51 KBUILD_CPPFLAGS += -mlittle-endian
  52 AS              += -EL
  53 LD              += -EL
  54 endif
  55
  56 comma = ,
  57
  58 # This selects which instruction set is used.
  59 # Note that GCC does not numerically define an architecture version
  60 # macro, but instead defines a whole series of macros which makes
  61 # testing for a specific architecture or later rather impossible.
  62 arch-$(CONFIG_CPU_32v7)         :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  63 arch-$(CONFIG_CPU_32v6)         :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  64 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  65 # always available in ARMv7
  66 ifeq ($(CONFIG_CPU_32v6),y)
  67 arch-$(CONFIG_CPU_32v6K)        :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  68 endif
  69 arch-$(CONFIG_CPU_32v5)         :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  70 arch-$(CONFIG_CPU_32v4T)        :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
  71 arch-$(CONFIG_CPU_32v4)         :=-D__LINUX_ARM_ARCH__=4 -march=armv4
  72 arch-$(CONFIG_CPU_32v3)         :=-D__LINUX_ARM_ARCH__=3 -march=armv3
  73
  74 # This selects how we optimise for the processor.
  75 tune-$(CONFIG_CPU_ARM7TDMI)     :=-mtune=arm7tdmi
  76 tune-$(CONFIG_CPU_ARM720T)      :=-mtune=arm7tdmi
  77 tune-$(CONFIG_CPU_ARM740T)      :=-mtune=arm7tdmi
  78 tune-$(CONFIG_CPU_ARM9TDMI)     :=-mtune=arm9tdmi
  79 tune-$(CONFIG_CPU_ARM940T)      :=-mtune=arm9tdmi
  80 tune-$(CONFIG_CPU_ARM946E)      :=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  81 tune-$(CONFIG_CPU_ARM920T)      :=-mtune=arm9tdmi
  82 tune-$(CONFIG_CPU_ARM922T)      :=-mtune=arm9tdmi
  83 tune-$(CONFIG_CPU_ARM925T)      :=-mtune=arm9tdmi
  84 tune-$(CONFIG_CPU_ARM926T)      :=-mtune=arm9tdmi
  85 tune-$(CONFIG_CPU_FA526)        :=-mtune=arm9tdmi
  86 tune-$(CONFIG_CPU_SA110)        :=-mtune=strongarm110
  87 tune-$(CONFIG_CPU_SA1100)       :=-mtune=strongarm1100
  88 tune-$(CONFIG_CPU_XSCALE)       :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  89 tune-$(CONFIG_CPU_XSC3)         :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  90 tune-$(CONFIG_CPU_FEROCEON)     :=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  91 tune-$(CONFIG_CPU_V6)           :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  92 tune-$(CONFIG_CPU_V6K)          :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  93
  94 ifeq ($(CONFIG_AEABI),y)
  95 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork
  96 else
  97 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
  98 endif
  99
 100 ifeq ($(CONFIG_ARM_UNWIND),y)
 101 CFLAGS_ABI      +=-funwind-tables
 102 endif
 103
 104 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 105 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 106 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 107 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 108 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 109 # Work around buggy relocation from gas if requested:
 110 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 111 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 112 endif
 113 else
 114 CFLAGS_ISA      :=$(call cc-option,-marm,)
 115 AFLAGS_ISA      :=$(CFLAGS_ISA)
 116 endif
 117
 118 # Need -Uarm for gcc < 3.x
 119 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 120 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 121
 122 CHECKFLAGS      += -D__arm__
 123
 124 #Default value
 125 head-y          := arch/arm/kernel/head$(MMUEXT).o
 126 textofs-y       := 0x00008000
 127 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 128 # We don't want the htc bootloader to corrupt kernel during resume
 129 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 130 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 131 ifeq ($(CONFIG_ARCH_SA1100),y)
 132 textofs-$(CONFIG_SA1111) := 0x00208000
 133 endif
 134 textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 135 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 136 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 137
 138 # Machine directory name.  This list is sorted alphanumerically
 139 # by CONFIG_* macro name.
 140 machine-$(CONFIG_ARCH_AT91)             += at91
 141 machine-$(CONFIG_ARCH_BCM)              += bcm
 142 machine-$(CONFIG_ARCH_BCM2835)          += bcm2835
 143 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 144 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 145 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 146 machine-$(CONFIG_ARCH_DOVE)             += dove
 147 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 148 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 149 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 150 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 151 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 152 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 153 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 154 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 155 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 156 machine-$(CONFIG_ARCH_KIRKWOOD)         += kirkwood
 157 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 158 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 159 machine-$(CONFIG_ARCH_MMP)              += mmp
 160 machine-$(CONFIG_ARCH_MSM)              += msm
 161 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 162 machine-$(CONFIG_ARCH_MXC)              += imx
 163 machine-$(CONFIG_ARCH_MXS)              += mxs
 164 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 165 machine-$(CONFIG_ARCH_NETX)             += netx
 166 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 167 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 168 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 169 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 170 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 171 machine-$(CONFIG_ARCH_PRIMA2)           += prima2
 172 machine-$(CONFIG_ARCH_PXA)              += pxa
 173 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 174 machine-$(CONFIG_ARCH_RPC)              += rpc
 175 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 176 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 177 machine-$(CONFIG_ARCH_S5P64X0)          += s5p64x0
 178 machine-$(CONFIG_ARCH_S5PC100)          += s5pc100
 179 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 180 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 181 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 182 machine-$(CONFIG_ARCH_SHARK)            += shark
 183 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 184 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 185 machine-$(CONFIG_ARCH_U300)             += u300
 186 machine-$(CONFIG_ARCH_U8500)            += ux500
 187 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 188 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 189 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 190 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 191 machine-$(CONFIG_FOOTBRIDGE)            += footbridge
 192 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 193 machine-$(CONFIG_PLAT_SPEAR)            += spear
 194 machine-$(CONFIG_ARCH_VIRT)             += virt
 195 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 196 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 197
 198 # Platform directory name.  This list is sorted alphanumerically
 199 # by CONFIG_* macro name.
 200 plat-$(CONFIG_ARCH_OMAP)        += omap
 201 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 202 plat-$(CONFIG_PLAT_IOP)         += iop
 203 plat-$(CONFIG_PLAT_ORION)       += orion
 204 plat-$(CONFIG_PLAT_PXA)         += pxa
 205 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 206 plat-$(CONFIG_PLAT_S5P)         += samsung
 207 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 208
 209 ifeq ($(CONFIG_ARCH_EBSA110),y)
 210 # This is what happens if you forget the IOCS16 line.
 211 # PCMCIA cards stop working.
 212 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 213 export CFLAGS_3c589_cs.o
 214 endif
 215
 216 # The byte offset of the kernel image in RAM from the start of RAM.
 217 TEXT_OFFSET := $(textofs-y)
 218
 219 # The first directory contains additional information for the boot setup code
 220 ifneq ($(machine-y),)
 221 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 222 else
 223 MACHINE  :=
 224 endif
 225 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 226 MACHINE  :=
 227 endif
 228
 229 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 230 platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
 231
 232 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 233 ifeq ($(KBUILD_SRC),)
 234 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 235 else
 236 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 237 endif
 238 endif
 239
 240 export  TEXT_OFFSET GZFLAGS MMUEXT
 241
 242 # Do we have FASTFPE?
 243 FASTFPE         :=arch/arm/fastfpe
 244 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 245 FASTFPE_OBJ     :=$(FASTFPE)/
 246 endif
 247
 248 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 249 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 250 core-$(CONFIG_VFP)              += arch/arm/vfp/
 251 core-$(CONFIG_XEN)              += arch/arm/xen/
 252 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 253
 254 # If we have a machine-specific directory, then include it in the build.
 255 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 256 core-y                          += arch/arm/net/
 257 core-y                          += arch/arm/crypto/
 258 core-y                          += $(machdirs) $(platdirs)
 259
 260 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 261
 262 libs-y                          := arch/arm/lib/ $(libs-y)
 263
 264 # Default target when executing plain make
 265 ifeq ($(CONFIG_XIP_KERNEL),y)
 266 KBUILD_IMAGE := xipImage
 267 else
 268 KBUILD_IMAGE := zImage
 269 endif
 270
 271 # Build the DT binary blobs if we have OF configured
 272 ifeq ($(CONFIG_USE_OF),y)
 273 KBUILD_DTBS := dtbs
 274 endif
 275
 276 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 277
 278 boot := arch/arm/boot
 279
 280 archprepare:
 281         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 282
 283 # Convert bzImage to zImage
 284 bzImage: zImage
 285
 286 zImage Image xipImage bootpImage uImage: vmlinux
 287         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 288
 289 zinstall uinstall install: vmlinux
 290         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 291
 292 %.dtb: scripts
 293         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 294
 295 dtbs: scripts
 296         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 297
 298 # We use MRPROPER_FILES and CLEAN_FILES now
 299 archclean:
 300         $(Q)$(MAKE) $(clean)=$(boot)
 301
 302 # My testing targets (bypasses dependencies)
 303 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 304 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 305
 306
 307 define archhelp
 308   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 309   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 310   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 311   echo  '  uImage        - U-Boot wrapped zImage'
 312   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 313   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 314   echo  '* dtbs          - Build device tree blobs for enabled boards'
 315   echo  '  install       - Install uncompressed kernel'
 316   echo  '  zinstall      - Install compressed kernel'
 317   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 318   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 319   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 320   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 321 endef