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 --pic-veneer
  17 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  18 LDFLAGS_vmlinux += --be8
  19 KBUILD_LDFLAGS_MODULE   += --be8
  20 endif
  21
  22 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
  23 KBUILD_LDFLAGS_MODULE   += -T $(srctree)/arch/arm/kernel/module.lds
  24 endif
  25
  26 GZFLAGS         :=-9
  27 #KBUILD_CFLAGS  +=-pipe
  28
  29 # Never generate .eh_frame
  30 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  31
  32 # This should work on most of the modern platforms
  33 KBUILD_DEFCONFIG := multi_v7_defconfig
  34
  35 # defines filename extension depending memory management type.
  36 ifeq ($(CONFIG_MMU),)
  37 MMUEXT          := -nommu
  38 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  39 endif
  40
  41 ifeq ($(CONFIG_FRAME_POINTER),y)
  42 KBUILD_CFLAGS   +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
  43 endif
  44
  45 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  46 KBUILD_CPPFLAGS += -mbig-endian
  47 CHECKFLAGS      += -D__ARMEB__
  48 AS              += -EB
  49 LD              += -EB
  50 else
  51 KBUILD_CPPFLAGS += -mlittle-endian
  52 CHECKFLAGS      += -D__ARMEL__
  53 AS              += -EL
  54 LD              += -EL
  55 endif
  56
  57 #
  58 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
  59 # later may result in code being generated that handles signed short and signed
  60 # char struct members incorrectly. So disable it.
  61 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
  62 #
  63 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
  64
  65 # This selects which instruction set is used.
  66 # Note that GCC does not numerically define an architecture version
  67 # macro, but instead defines a whole series of macros which makes
  68 # testing for a specific architecture or later rather impossible.
  69 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  70 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  71 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  72 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  73 # always available in ARMv7
  74 ifeq ($(CONFIG_CPU_32v6),y)
  75 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  76 endif
  77 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  78 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  79 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  80 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3
  81
  82 # Evaluate arch cc-option calls now
  83 arch-y := $(arch-y)
  84
  85 # This selects how we optimise for the processor.
  86 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  87 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  88 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  89 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  90 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  91 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  92 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  93 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  94 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  95 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  96 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  97 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
  98 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
  99 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
 100 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
 101 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
 102 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 103 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 104
 105 # Evaluate tune cc-option calls now
 106 tune-y := $(tune-y)
 107
 108 ifeq ($(CONFIG_AEABI),y)
 109 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
 110 else
 111 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 112 endif
 113
 114 ifeq ($(CONFIG_ARM_UNWIND),y)
 115 CFLAGS_ABI      +=-funwind-tables
 116 endif
 117
 118 # Accept old syntax despite ".syntax unified"
 119 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 120
 121 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 122 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 123 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 124 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 125 # Work around buggy relocation from gas if requested:
 126 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 127 KBUILD_CFLAGS_MODULE    +=-fno-optimize-sibling-calls
 128 endif
 129 else
 130 CFLAGS_ISA      :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
 131 AFLAGS_ISA      :=$(CFLAGS_ISA)
 132 endif
 133
 134 # Need -Uarm for gcc < 3.x
 135 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 136 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 137
 138 CHECKFLAGS      += -D__arm__ -m32
 139
 140 #Default value
 141 head-y          := arch/arm/kernel/head$(MMUEXT).o
 142
 143 # Text offset. This list is sorted numerically by address in order to
 144 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 145 textofs-y       := 0x00008000
 146 # We don't want the htc bootloader to corrupt kernel during resume
 147 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 148 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 149 ifeq ($(CONFIG_ARCH_SA1100),y)
 150 textofs-$(CONFIG_SA1111) := 0x00208000
 151 endif
 152 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 153 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 154 textofs-$(CONFIG_ARCH_MESON) := 0x00208000
 155 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 156
 157 # Machine directory name.  This list is sorted alphanumerically
 158 # by CONFIG_* macro name.
 159 machine-$(CONFIG_ARCH_ACTIONS)          += actions
 160 machine-$(CONFIG_ARCH_ALPINE)           += alpine
 161 machine-$(CONFIG_ARCH_ARTPEC)           += artpec
 162 machine-$(CONFIG_ARCH_AT91)             += at91
 163 machine-$(CONFIG_ARCH_AXXIA)            += axxia
 164 machine-$(CONFIG_ARCH_BCM)              += bcm
 165 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 166 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 167 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 168 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 169 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
 170 machine-$(CONFIG_ARCH_DOVE)             += dove
 171 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 172 machine-$(CONFIG_ARCH_EFM32)            += efm32
 173 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 174 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 175 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 176 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 177 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 178 machine-$(CONFIG_ARCH_HISI)             += hisi
 179 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 180 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 181 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 182 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 183 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 184 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 185 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 186 machine-$(CONFIG_ARCH_LPC18XX)          += lpc18xx
 187 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 188 machine-$(CONFIG_ARCH_MESON)            += meson
 189 machine-$(CONFIG_ARCH_MMP)              += mmp
 190 machine-$(CONFIG_ARCH_MPS2)             += vexpress
 191 machine-$(CONFIG_ARCH_MOXART)           += moxart
 192 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 193 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 194 machine-$(CONFIG_ARCH_MXC)              += imx
 195 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 196 machine-$(CONFIG_ARCH_MXS)              += mxs
 197 machine-$(CONFIG_ARCH_NETX)             += netx
 198 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 199 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 200 machine-$(CONFIG_ARCH_OXNAS)            += oxnas
 201 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 202 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 203 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 204 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 205 machine-$(CONFIG_ARCH_PXA)              += pxa
 206 machine-$(CONFIG_ARCH_QCOM)             += qcom
 207 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 208 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 209 machine-$(CONFIG_ARCH_RPC)              += rpc
 210 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 211 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 212 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 213 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 214 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 215 machine-$(CONFIG_ARCH_SIRF)             += prima2
 216 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 217 machine-$(CONFIG_ARCH_STI)              += sti
 218 machine-$(CONFIG_ARCH_STM32)            += stm32
 219 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 220 machine-$(CONFIG_ARCH_TANGO)            += tango
 221 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 222 machine-$(CONFIG_ARCH_U300)             += u300
 223 machine-$(CONFIG_ARCH_U8500)            += ux500
 224 machine-$(CONFIG_ARCH_UNIPHIER)         += uniphier
 225 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 226 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 227 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 228 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 229 machine-$(CONFIG_ARCH_ZX)               += zx
 230 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 231 machine-$(CONFIG_PLAT_SPEAR)            += spear
 232
 233 # Platform directory name.  This list is sorted alphanumerically
 234 # by CONFIG_* macro name.
 235 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 236 plat-$(CONFIG_ARCH_OMAP)        += omap
 237 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 238 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 239 plat-$(CONFIG_PLAT_IOP)         += iop
 240 plat-$(CONFIG_PLAT_ORION)       += orion
 241 plat-$(CONFIG_PLAT_PXA)         += pxa
 242 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 243 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 244
 245 ifeq ($(CONFIG_ARCH_EBSA110),y)
 246 # This is what happens if you forget the IOCS16 line.
 247 # PCMCIA cards stop working.
 248 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 249 export CFLAGS_3c589_cs.o
 250 endif
 251
 252 # The byte offset of the kernel image in RAM from the start of RAM.
 253 TEXT_OFFSET := $(textofs-y)
 254
 255 # The first directory contains additional information for the boot setup code
 256 ifneq ($(machine-y),)
 257 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 258 else
 259 MACHINE  :=
 260 endif
 261 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 262 MACHINE  :=
 263 endif
 264
 265 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 266 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 267
 268 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 269 ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
 270 ifeq ($(KBUILD_SRC),)
 271 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 272 else
 273 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 274 endif
 275 endif
 276 endif
 277
 278 export  TEXT_OFFSET GZFLAGS MMUEXT
 279
 280 # Do we have FASTFPE?
 281 FASTFPE         :=arch/arm/fastfpe
 282 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 283 FASTFPE_OBJ     :=$(FASTFPE)/
 284 endif
 285
 286 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 287 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 288 core-$(CONFIG_VFP)              += arch/arm/vfp/
 289 core-$(CONFIG_XEN)              += arch/arm/xen/
 290 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 291 core-$(CONFIG_VDSO)             += arch/arm/vdso/
 292
 293 # If we have a machine-specific directory, then include it in the build.
 294 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 295 core-y                          += arch/arm/probes/
 296 core-y                          += arch/arm/net/
 297 core-y                          += arch/arm/crypto/
 298 core-y                          += arch/arm/firmware/
 299 core-y                          += $(machdirs) $(platdirs)
 300
 301 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 302
 303 libs-y                          := arch/arm/lib/ $(libs-y)
 304
 305 # Default target when executing plain make
 306 boot := arch/arm/boot
 307 ifeq ($(CONFIG_XIP_KERNEL),y)
 308 KBUILD_IMAGE := $(boot)/xipImage
 309 else
 310 KBUILD_IMAGE := $(boot)/zImage
 311 endif
 312
 313 # Build the DT binary blobs if we have OF configured
 314 ifeq ($(CONFIG_USE_OF),y)
 315 KBUILD_DTBS := dtbs
 316 endif
 317
 318 all:    $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTBS)
 319
 320
 321 archheaders:
 322         $(Q)$(MAKE) $(build)=arch/arm/tools uapi
 323
 324 archprepare:
 325         $(Q)$(MAKE) $(build)=arch/arm/tools kapi
 326
 327 # Convert bzImage to zImage
 328 bzImage: zImage
 329
 330 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 331 INSTALL_TARGETS = zinstall uinstall install
 332
 333 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 334
 335 bootpImage uImage: zImage
 336 zImage: Image
 337
 338 $(BOOT_TARGETS): vmlinux
 339         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 340         @$(kecho) '  Kernel: $(boot)/$@ is ready'
 341
 342 $(INSTALL_TARGETS):
 343         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 344
 345 %.dtb: | scripts
 346         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 347
 348 PHONY += dtbs dtbs_install
 349
 350 dtbs: prepare scripts
 351         $(Q)$(MAKE) $(build)=$(boot)/dts
 352
 353 dtbs_install:
 354         $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 355
 356 PHONY += vdso_install
 357 vdso_install:
 358 ifeq ($(CONFIG_VDSO),y)
 359         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
 360 endif
 361
 362 # We use MRPROPER_FILES and CLEAN_FILES now
 363 archclean:
 364         $(Q)$(MAKE) $(clean)=$(boot)
 365
 366 # My testing targets (bypasses dependencies)
 367 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 368
 369
 370 define archhelp
 371   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 372   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 373   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 374   echo  '  uImage        - U-Boot wrapped zImage'
 375   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 376   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 377   echo  '* dtbs          - Build device tree blobs for enabled boards'
 378   echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
 379   echo  '  install       - Install uncompressed kernel'
 380   echo  '  zinstall      - Install compressed kernel'
 381   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 382   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 383   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 384   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 385   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
 386 endef