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 ($(CONFIG_CPU_ENDIAN_BE8),y)
  18 LDFLAGS_vmlinux += --be8
  19 LDFLAGS_MODULE  += --be8
  20 endif
  21
  22 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
  23 LDFLAGS_MODULE  += -T $(srctree)/arch/arm/kernel/module.lds
  24 endif
  25
  26 OBJCOPYFLAGS    :=-O binary -R .comment -S
  27 GZFLAGS         :=-9
  28 #KBUILD_CFLAGS  +=-pipe
  29
  30 # Never generate .eh_frame
  31 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  32
  33 # Do not use arch/arm/defconfig - it's always outdated.
  34 # Select a platform tht is kept up-to-date
  35 KBUILD_DEFCONFIG := versatile_defconfig
  36
  37 # defines filename extension depending memory management type.
  38 ifeq ($(CONFIG_MMU),)
  39 MMUEXT          := -nommu
  40 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  41 endif
  42
  43 ifeq ($(CONFIG_FRAME_POINTER),y)
  44 KBUILD_CFLAGS   +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
  45 endif
  46
  47 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  48 KBUILD_CPPFLAGS += -mbig-endian
  49 AS              += -EB
  50 LD              += -EB
  51 else
  52 KBUILD_CPPFLAGS += -mlittle-endian
  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 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 119 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 120 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 121 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 122 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 123 # Work around buggy relocation from gas if requested:
 124 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 125 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 126 endif
 127 else
 128 CFLAGS_ISA      :=$(call cc-option,-marm,)
 129 AFLAGS_ISA      :=$(CFLAGS_ISA)
 130 endif
 131
 132 # Need -Uarm for gcc < 3.x
 133 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 134 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 135
 136 CHECKFLAGS      += -D__arm__
 137
 138 #Default value
 139 head-y          := arch/arm/kernel/head$(MMUEXT).o
 140
 141 # Text offset. This list is sorted numerically by address in order to
 142 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 143 textofs-y       := 0x00008000
 144 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 145 # We don't want the htc bootloader to corrupt kernel during resume
 146 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 147 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 148 ifeq ($(CONFIG_ARCH_SA1100),y)
 149 textofs-$(CONFIG_SA1111) := 0x00208000
 150 endif
 151 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 152 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 153 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 154
 155 # Machine directory name.  This list is sorted alphanumerically
 156 # by CONFIG_* macro name.
 157 machine-$(CONFIG_ARCH_ALPINE)           += alpine
 158 machine-$(CONFIG_ARCH_AT91)             += at91
 159 machine-$(CONFIG_ARCH_AXXIA)            += axxia
 160 machine-$(CONFIG_ARCH_BCM)              += bcm
 161 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 162 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 163 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 164 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 165 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
 166 machine-$(CONFIG_ARCH_DOVE)             += dove
 167 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 168 machine-$(CONFIG_ARCH_EFM32)            += efm32
 169 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 170 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 171 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 172 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 173 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 174 machine-$(CONFIG_ARCH_HISI)             += hisi
 175 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 176 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 177 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 178 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 179 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 180 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 181 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 182 machine-$(CONFIG_ARCH_LPC18XX)          += lpc18xx
 183 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 184 machine-$(CONFIG_ARCH_MESON)            += meson
 185 machine-$(CONFIG_ARCH_MMP)              += mmp
 186 machine-$(CONFIG_ARCH_MOXART)           += moxart
 187 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 188 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 189 machine-$(CONFIG_ARCH_MXC)              += imx
 190 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 191 machine-$(CONFIG_ARCH_MXS)              += mxs
 192 machine-$(CONFIG_ARCH_NETX)             += netx
 193 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 194 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 195 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 196 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 197 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 198 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 199 machine-$(CONFIG_ARCH_PXA)              += pxa
 200 machine-$(CONFIG_ARCH_QCOM)             += qcom
 201 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 202 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 203 machine-$(CONFIG_ARCH_RPC)              += rpc
 204 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 205 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 206 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 207 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 208 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 209 machine-$(CONFIG_ARCH_SIRF)             += prima2
 210 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 211 machine-$(CONFIG_ARCH_STI)              += sti
 212 machine-$(CONFIG_ARCH_STM32)            += stm32
 213 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 214 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 215 machine-$(CONFIG_ARCH_U300)             += u300
 216 machine-$(CONFIG_ARCH_U8500)            += ux500
 217 machine-$(CONFIG_ARCH_UNIPHIER)         += uniphier
 218 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 219 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 220 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 221 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 222 machine-$(CONFIG_ARCH_ZX)               += zx
 223 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 224 machine-$(CONFIG_PLAT_SPEAR)            += spear
 225
 226 # Platform directory name.  This list is sorted alphanumerically
 227 # by CONFIG_* macro name.
 228 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 229 plat-$(CONFIG_ARCH_OMAP)        += omap
 230 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 231 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 232 plat-$(CONFIG_PLAT_IOP)         += iop
 233 plat-$(CONFIG_PLAT_ORION)       += orion
 234 plat-$(CONFIG_PLAT_PXA)         += pxa
 235 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 236 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 237
 238 ifeq ($(CONFIG_ARCH_EBSA110),y)
 239 # This is what happens if you forget the IOCS16 line.
 240 # PCMCIA cards stop working.
 241 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 242 export CFLAGS_3c589_cs.o
 243 endif
 244
 245 # The byte offset of the kernel image in RAM from the start of RAM.
 246 TEXT_OFFSET := $(textofs-y)
 247
 248 # The first directory contains additional information for the boot setup code
 249 ifneq ($(machine-y),)
 250 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 251 else
 252 MACHINE  :=
 253 endif
 254 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 255 MACHINE  :=
 256 endif
 257
 258 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 259 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 260
 261 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 262 ifeq ($(KBUILD_SRC),)
 263 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 264 else
 265 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 266 endif
 267 endif
 268
 269 export  TEXT_OFFSET GZFLAGS MMUEXT
 270
 271 # Do we have FASTFPE?
 272 FASTFPE         :=arch/arm/fastfpe
 273 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 274 FASTFPE_OBJ     :=$(FASTFPE)/
 275 endif
 276
 277 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 278 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 279 core-$(CONFIG_VFP)              += arch/arm/vfp/
 280 core-$(CONFIG_XEN)              += arch/arm/xen/
 281 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 282 core-$(CONFIG_VDSO)             += arch/arm/vdso/
 283
 284 # If we have a machine-specific directory, then include it in the build.
 285 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 286 core-y                          += arch/arm/probes/
 287 core-y                          += arch/arm/net/
 288 core-y                          += arch/arm/crypto/
 289 core-y                          += arch/arm/firmware/
 290 core-y                          += $(machdirs) $(platdirs)
 291
 292 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 293
 294 libs-y                          := arch/arm/lib/ $(libs-y)
 295
 296 # Default target when executing plain make
 297 ifeq ($(CONFIG_XIP_KERNEL),y)
 298 KBUILD_IMAGE := xipImage
 299 else
 300 KBUILD_IMAGE := zImage
 301 endif
 302
 303 # Build the DT binary blobs if we have OF configured
 304 ifeq ($(CONFIG_USE_OF),y)
 305 KBUILD_DTBS := dtbs
 306 endif
 307
 308 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 309
 310 boot := arch/arm/boot
 311
 312 archprepare:
 313         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 314
 315 # Convert bzImage to zImage
 316 bzImage: zImage
 317
 318 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 319 INSTALL_TARGETS = zinstall uinstall install
 320
 321 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 322
 323 bootpImage uImage: zImage
 324 zImage: Image
 325
 326 $(BOOT_TARGETS): vmlinux
 327         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 328
 329 $(INSTALL_TARGETS):
 330         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 331
 332 %.dtb: | scripts
 333         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 334
 335 PHONY += dtbs dtbs_install
 336
 337 dtbs: prepare scripts
 338         $(Q)$(MAKE) $(build)=$(boot)/dts
 339
 340 dtbs_install:
 341         $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 342
 343 PHONY += vdso_install
 344 vdso_install:
 345 ifeq ($(CONFIG_VDSO),y)
 346         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
 347 endif
 348
 349 # We use MRPROPER_FILES and CLEAN_FILES now
 350 archclean:
 351         $(Q)$(MAKE) $(clean)=$(boot)
 352
 353 # My testing targets (bypasses dependencies)
 354 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 355 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 356
 357
 358 define archhelp
 359   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 360   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 361   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 362   echo  '  uImage        - U-Boot wrapped zImage'
 363   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 364   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 365   echo  '* dtbs          - Build device tree blobs for enabled boards'
 366   echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
 367   echo  '  install       - Install uncompressed kernel'
 368   echo  '  zinstall      - Install compressed kernel'
 369   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 370   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 371   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 372   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 373   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
 374 endef