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 OBJCOPYFLAGS    :=-O binary -R .comment -S
  23 GZFLAGS         :=-9
  24 #KBUILD_CFLAGS  +=-pipe
  25
  26 # Never generate .eh_frame
  27 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  28
  29 # Do not use arch/arm/defconfig - it's always outdated.
  30 # Select a platform tht is kept up-to-date
  31 KBUILD_DEFCONFIG := versatile_defconfig
  32
  33 # defines filename extension depending memory management type.
  34 ifeq ($(CONFIG_MMU),)
  35 MMUEXT          := -nommu
  36 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  37 endif
  38
  39 ifeq ($(CONFIG_FRAME_POINTER),y)
  40 KBUILD_CFLAGS   +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
  41 endif
  42
  43 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  44 KBUILD_CPPFLAGS += -mbig-endian
  45 AS              += -EB
  46 LD              += -EB
  47 else
  48 KBUILD_CPPFLAGS += -mlittle-endian
  49 AS              += -EL
  50 LD              += -EL
  51 endif
  52
  53 #
  54 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
  55 # later may result in code being generated that handles signed short and signed
  56 # char struct members incorrectly. So disable it.
  57 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
  58 #
  59 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
  60
  61 # This selects which instruction set is used.
  62 # Note that GCC does not numerically define an architecture version
  63 # macro, but instead defines a whole series of macros which makes
  64 # testing for a specific architecture or later rather impossible.
  65 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  66 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  67 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  68 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  69 # always available in ARMv7
  70 ifeq ($(CONFIG_CPU_32v6),y)
  71 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  72 endif
  73 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  74 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  75 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  76 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3
  77
  78 # Evaluate arch cc-option calls now
  79 arch-y := $(arch-y)
  80
  81 # This selects how we optimise for the processor.
  82 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  83 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  84 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  85 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  86 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  87 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  88 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  89 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  90 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  91 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  92 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  93 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
  94 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
  95 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  96 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  97 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  98 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  99 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 100
 101 # Evaluate tune cc-option calls now
 102 tune-y := $(tune-y)
 103
 104 ifeq ($(CONFIG_AEABI),y)
 105 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
 106 else
 107 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 108 endif
 109
 110 ifeq ($(CONFIG_ARM_UNWIND),y)
 111 CFLAGS_ABI      +=-funwind-tables
 112 endif
 113
 114 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 115 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 116 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 117 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 118 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 119 # Work around buggy relocation from gas if requested:
 120 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 121 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 122 endif
 123 else
 124 CFLAGS_ISA      :=$(call cc-option,-marm,)
 125 AFLAGS_ISA      :=$(CFLAGS_ISA)
 126 endif
 127
 128 # Need -Uarm for gcc < 3.x
 129 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 130 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 131
 132 CHECKFLAGS      += -D__arm__
 133
 134 #Default value
 135 head-y          := arch/arm/kernel/head$(MMUEXT).o
 136
 137 # Text offset. This list is sorted numerically by address in order to
 138 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 139 textofs-y       := 0x00008000
 140 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 141 # We don't want the htc bootloader to corrupt kernel during resume
 142 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 143 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 144 ifeq ($(CONFIG_ARCH_SA1100),y)
 145 textofs-$(CONFIG_SA1111) := 0x00208000
 146 endif
 147 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 148 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 149 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 150
 151 # Machine directory name.  This list is sorted alphanumerically
 152 # by CONFIG_* macro name.
 153 machine-$(CONFIG_ARCH_ALPINE)           += alpine
 154 machine-$(CONFIG_ARCH_AT91)             += at91
 155 machine-$(CONFIG_ARCH_AXXIA)            += axxia
 156 machine-$(CONFIG_ARCH_BCM)              += bcm
 157 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 158 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 159 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 160 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 161 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
 162 machine-$(CONFIG_ARCH_DOVE)             += dove
 163 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 164 machine-$(CONFIG_ARCH_EFM32)            += efm32
 165 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 166 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 167 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 168 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 169 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 170 machine-$(CONFIG_ARCH_HISI)             += hisi
 171 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 172 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 173 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 174 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 175 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 176 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 177 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 178 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 179 machine-$(CONFIG_ARCH_MESON)            += meson
 180 machine-$(CONFIG_ARCH_MMP)              += mmp
 181 machine-$(CONFIG_ARCH_MOXART)           += moxart
 182 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 183 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 184 machine-$(CONFIG_ARCH_MXC)              += imx
 185 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 186 machine-$(CONFIG_ARCH_MXS)              += mxs
 187 machine-$(CONFIG_ARCH_NETX)             += netx
 188 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 189 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 190 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 191 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 192 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 193 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 194 machine-$(CONFIG_ARCH_PXA)              += pxa
 195 machine-$(CONFIG_ARCH_QCOM)             += qcom
 196 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 197 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 198 machine-$(CONFIG_ARCH_RPC)              += rpc
 199 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 200 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 201 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 202 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 203 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 204 machine-$(CONFIG_ARCH_SIRF)             += prima2
 205 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 206 machine-$(CONFIG_ARCH_STI)              += sti
 207 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 208 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 209 machine-$(CONFIG_ARCH_U300)             += u300
 210 machine-$(CONFIG_ARCH_U8500)            += ux500
 211 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 212 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 213 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 214 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 215 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 216 machine-$(CONFIG_PLAT_SPEAR)            += spear
 217
 218 # Platform directory name.  This list is sorted alphanumerically
 219 # by CONFIG_* macro name.
 220 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 221 plat-$(CONFIG_ARCH_OMAP)        += omap
 222 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 223 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 224 plat-$(CONFIG_PLAT_IOP)         += iop
 225 plat-$(CONFIG_PLAT_ORION)       += orion
 226 plat-$(CONFIG_PLAT_PXA)         += pxa
 227 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 228 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 229
 230 ifeq ($(CONFIG_ARCH_EBSA110),y)
 231 # This is what happens if you forget the IOCS16 line.
 232 # PCMCIA cards stop working.
 233 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 234 export CFLAGS_3c589_cs.o
 235 endif
 236
 237 # The byte offset of the kernel image in RAM from the start of RAM.
 238 TEXT_OFFSET := $(textofs-y)
 239
 240 # The first directory contains additional information for the boot setup code
 241 ifneq ($(machine-y),)
 242 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 243 else
 244 MACHINE  :=
 245 endif
 246 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 247 MACHINE  :=
 248 endif
 249
 250 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 251 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 252
 253 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 254 ifeq ($(KBUILD_SRC),)
 255 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 256 else
 257 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 258 endif
 259 endif
 260
 261 export  TEXT_OFFSET GZFLAGS MMUEXT
 262
 263 # Do we have FASTFPE?
 264 FASTFPE         :=arch/arm/fastfpe
 265 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 266 FASTFPE_OBJ     :=$(FASTFPE)/
 267 endif
 268
 269 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 270 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 271 core-$(CONFIG_VFP)              += arch/arm/vfp/
 272 core-$(CONFIG_XEN)              += arch/arm/xen/
 273 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 274 core-$(CONFIG_VDSO)             += arch/arm/vdso/
 275
 276 # If we have a machine-specific directory, then include it in the build.
 277 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 278 core-y                          += arch/arm/probes/
 279 core-y                          += arch/arm/net/
 280 core-y                          += arch/arm/crypto/
 281 core-y                          += arch/arm/firmware/
 282 core-y                          += $(machdirs) $(platdirs)
 283
 284 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 285
 286 libs-y                          := arch/arm/lib/ $(libs-y)
 287
 288 # Default target when executing plain make
 289 ifeq ($(CONFIG_XIP_KERNEL),y)
 290 KBUILD_IMAGE := xipImage
 291 else
 292 KBUILD_IMAGE := zImage
 293 endif
 294
 295 # Build the DT binary blobs if we have OF configured
 296 ifeq ($(CONFIG_USE_OF),y)
 297 KBUILD_DTBS := dtbs
 298 endif
 299
 300 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 301
 302 boot := arch/arm/boot
 303
 304 archprepare:
 305         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 306
 307 # Convert bzImage to zImage
 308 bzImage: zImage
 309
 310 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 311 INSTALL_TARGETS = zinstall uinstall install
 312
 313 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 314
 315 $(BOOT_TARGETS): vmlinux
 316         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 317
 318 $(INSTALL_TARGETS):
 319         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 320
 321 %.dtb: | scripts
 322         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 323
 324 PHONY += dtbs dtbs_install
 325
 326 dtbs: prepare scripts
 327         $(Q)$(MAKE) $(build)=$(boot)/dts
 328
 329 dtbs_install:
 330         $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 331
 332 PHONY += vdso_install
 333 vdso_install:
 334 ifeq ($(CONFIG_VDSO),y)
 335         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
 336 endif
 337
 338 # We use MRPROPER_FILES and CLEAN_FILES now
 339 archclean:
 340         $(Q)$(MAKE) $(clean)=$(boot)
 341
 342 # My testing targets (bypasses dependencies)
 343 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 344 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 345
 346
 347 define archhelp
 348   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 349   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 350   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 351   echo  '  uImage        - U-Boot wrapped zImage'
 352   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 353   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 354   echo  '* dtbs          - Build device tree blobs for enabled boards'
 355   echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
 356   echo  '  install       - Install uncompressed kernel'
 357   echo  '  zinstall      - Install compressed kernel'
 358   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 359   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 360   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 361   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 362   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
 363 endef