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 LDFLAGS_vmlinux := --no-undefined -X --pic-veneer
  14 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  15 LDFLAGS_vmlinux += --be8
  16 KBUILD_LDFLAGS_MODULE   += --be8
  17 endif
  18
  19 # We never want expected sections to be placed heuristically by the
  20 # linker. All sections should be explicitly named in the linker script.
  21 LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn)
  22
  23 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
  24 KBUILD_LDS_MODULE       += $(srctree)/arch/arm/kernel/module.lds
  25 endif
  26
  27 GZFLAGS         :=-9
  28 #KBUILD_CFLAGS  +=-pipe
  29
  30 # Never generate .eh_frame
  31 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  32
  33 # This should work on most of the modern platforms
  34 KBUILD_DEFCONFIG := multi_v7_defconfig
  35
  36 # defines filename extension depending memory management type.
  37 ifeq ($(CONFIG_MMU),)
  38 MMUEXT          := -nommu
  39 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  40 endif
  41
  42 ifeq ($(CONFIG_FRAME_POINTER),y)
  43 KBUILD_CFLAGS   +=-fno-omit-frame-pointer
  44 ifeq ($(CONFIG_CC_IS_GCC),y)
  45 KBUILD_CFLAGS += -mapcs -mno-sched-prolog
  46 endif
  47 endif
  48
  49 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  50 KBUILD_CPPFLAGS += -mbig-endian
  51 CHECKFLAGS      += -D__ARMEB__
  52 KBUILD_LDFLAGS  += -EB
  53 else
  54 KBUILD_CPPFLAGS += -mlittle-endian
  55 CHECKFLAGS      += -D__ARMEL__
  56 KBUILD_LDFLAGS  += -EL
  57 endif
  58
  59 #
  60 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
  61 # later may result in code being generated that handles signed short and signed
  62 # char struct members incorrectly. So disable it.
  63 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
  64 #
  65 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
  66
  67 # This selects which instruction set is used.
  68 # Note that GCC does not numerically define an architecture version
  69 # macro, but instead defines a whole series of macros which makes
  70 # testing for a specific architecture or later rather impossible.
  71 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  72 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  73 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  74 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  75 # always available in ARMv7
  76 ifeq ($(CONFIG_CPU_32v6),y)
  77 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  78 endif
  79 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  80 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  81 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  82 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3m
  83
  84 # Evaluate arch cc-option calls now
  85 arch-y := $(arch-y)
  86
  87 # This selects how we optimise for the processor.
  88 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  89 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  90 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  91 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  92 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  93 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  94 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  95 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  96 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  97 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  98 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  99 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
 100 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
 101 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
 102 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
 103 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
 104 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 105 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 106
 107 # Evaluate tune cc-option calls now
 108 tune-y := $(tune-y)
 109
 110 ifeq ($(CONFIG_AEABI),y)
 111 CFLAGS_ABI      :=-mabi=aapcs-linux -mfpu=vfp
 112 else
 113 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 114 endif
 115
 116 ifeq ($(CONFIG_ARM_UNWIND),y)
 117 CFLAGS_ABI      +=-funwind-tables
 118 endif
 119
 120 ifeq ($(CONFIG_CC_IS_CLANG),y)
 121 CFLAGS_ABI      += -meabi gnu
 122 endif
 123
 124 # Accept old syntax despite ".syntax unified"
 125 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 126
 127 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 128 CFLAGS_ISA      :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
 129 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 130 else
 131 CFLAGS_ISA      :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
 132 AFLAGS_ISA      :=$(CFLAGS_ISA)
 133 endif
 134
 135 # Need -Uarm for gcc < 3.x
 136 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 137 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 138
 139 CHECKFLAGS      += -D__arm__
 140
 141 #Default value
 142 head-y          := arch/arm/kernel/head$(MMUEXT).o
 143
 144 # Text offset. This list is sorted numerically by address in order to
 145 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 146 textofs-y       := 0x00008000
 147 # We don't want the htc bootloader to corrupt kernel during resume
 148 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 149 # RTD1195 has Boot ROM at start of address space
 150 textofs-$(CONFIG_ARCH_REALTEK)  := 0x00108000
 151 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 152 ifeq ($(CONFIG_ARCH_SA1100),y)
 153 textofs-$(CONFIG_SA1111) := 0x00208000
 154 endif
 155 textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
 156 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 157 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 158 textofs-$(CONFIG_ARCH_MESON) := 0x00208000
 159 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 160
 161 # Machine directory name.  This list is sorted alphanumerically
 162 # by CONFIG_* macro name.
 163 machine-$(CONFIG_ARCH_ACTIONS)          += actions
 164 machine-$(CONFIG_ARCH_ALPINE)           += alpine
 165 machine-$(CONFIG_ARCH_ARTPEC)           += artpec
 166 machine-$(CONFIG_ARCH_ASPEED)           += aspeed
 167 machine-$(CONFIG_ARCH_AT91)             += at91
 168 machine-$(CONFIG_ARCH_AXXIA)            += axxia
 169 machine-$(CONFIG_ARCH_BCM)              += bcm
 170 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 171 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 172 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 173 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 174 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
 175 machine-$(CONFIG_ARCH_DOVE)             += dove
 176 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 177 machine-$(CONFIG_ARCH_EFM32)            += efm32
 178 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 179 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 180 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 181 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 182 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 183 machine-$(CONFIG_ARCH_HISI)             += hisi
 184 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 185 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 186 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 187 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 188 machine-$(CONFIG_ARCH_LPC18XX)          += lpc18xx
 189 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 190 machine-$(CONFIG_ARCH_MESON)            += meson
 191 machine-$(CONFIG_ARCH_MMP)              += mmp
 192 machine-$(CONFIG_ARCH_MPS2)             += vexpress
 193 machine-$(CONFIG_ARCH_MOXART)           += moxart
 194 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 195 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 196 machine-$(CONFIG_ARCH_MXC)              += imx
 197 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 198 machine-$(CONFIG_ARCH_MILBEAUT)         += milbeaut
 199 machine-$(CONFIG_ARCH_MXS)              += mxs
 200 machine-$(CONFIG_ARCH_MSTARV7)          += mstar
 201 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 202 machine-$(CONFIG_ARCH_NPCM)             += npcm
 203 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 204 machine-$(CONFIG_ARCH_OXNAS)            += oxnas
 205 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 206 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 207 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 208 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 209 machine-$(CONFIG_ARCH_PXA)              += pxa
 210 machine-$(CONFIG_ARCH_QCOM)             += qcom
 211 machine-$(CONFIG_ARCH_RDA)              += rda
 212 machine-$(CONFIG_ARCH_REALTEK)          += realtek
 213 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 214 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 215 machine-$(CONFIG_ARCH_RPC)              += rpc
 216 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 217 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 218 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 219 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 220 machine-$(CONFIG_ARCH_RENESAS)          += shmobile
 221 machine-$(CONFIG_ARCH_SIRF)             += prima2
 222 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 223 machine-$(CONFIG_ARCH_STI)              += sti
 224 machine-$(CONFIG_ARCH_STM32)            += stm32
 225 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 226 machine-$(CONFIG_ARCH_TANGO)            += tango
 227 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 228 machine-$(CONFIG_ARCH_U300)             += u300
 229 machine-$(CONFIG_ARCH_U8500)            += ux500
 230 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 231 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 232 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 233 machine-$(CONFIG_ARCH_ZX)               += zx
 234 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 235 machine-$(CONFIG_PLAT_SPEAR)            += spear
 236
 237 # Platform directory name.  This list is sorted alphanumerically
 238 # by CONFIG_* macro name.
 239 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 240 plat-$(CONFIG_ARCH_OMAP)        += omap
 241 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 242 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 243 plat-$(CONFIG_PLAT_ORION)       += orion
 244 plat-$(CONFIG_PLAT_PXA)         += pxa
 245 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 246 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 247
 248 ifeq ($(CONFIG_ARCH_EBSA110),y)
 249 # This is what happens if you forget the IOCS16 line.
 250 # PCMCIA cards stop working.
 251 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 252 export CFLAGS_3c589_cs.o
 253 endif
 254
 255 # The byte offset of the kernel image in RAM from the start of RAM.
 256 TEXT_OFFSET := $(textofs-y)
 257
 258 # The first directory contains additional information for the boot setup code
 259 ifneq ($(machine-y),)
 260 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 261 else
 262 MACHINE  :=
 263 endif
 264 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 265 MACHINE  :=
 266 endif
 267
 268 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 269 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 270
 271 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 272 ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
 273 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 274 endif
 275 endif
 276
 277 export  TEXT_OFFSET GZFLAGS MMUEXT
 278
 279 core-y                          += arch/arm/
 280 # If we have a machine-specific directory, then include it in the build.
 281 core-y                          += $(machdirs) $(platdirs)
 282
 283 # For cleaning
 284 core-                           += $(patsubst %,arch/arm/mach-%/, $(machine-))
 285 core-                           += $(patsubst %,arch/arm/plat-%/, $(plat-))
 286
 287 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 288
 289 libs-y                          := arch/arm/lib/ $(libs-y)
 290
 291 # Default target when executing plain make
 292 boot := arch/arm/boot
 293 ifeq ($(CONFIG_XIP_KERNEL),y)
 294 KBUILD_IMAGE := $(boot)/xipImage
 295 else
 296 KBUILD_IMAGE := $(boot)/zImage
 297 endif
 298
 299 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
 300 prepare: stack_protector_prepare
 301 stack_protector_prepare: prepare0
 302         $(eval SSP_PLUGIN_CFLAGS := \
 303                 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell        \
 304                         awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
 305                                 include/generated/asm-offsets.h)        \
 306                 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell     \
 307                         awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
 308                                 include/generated/asm-offsets.h))
 309         $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
 310         $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
 311 endif
 312
 313 all:    $(notdir $(KBUILD_IMAGE))
 314
 315
 316 archheaders:
 317         $(Q)$(MAKE) $(build)=arch/arm/tools uapi
 318
 319 archprepare:
 320         $(Q)$(MAKE) $(build)=arch/arm/tools kapi
 321
 322 # Convert bzImage to zImage
 323 bzImage: zImage
 324
 325 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 326 INSTALL_TARGETS = zinstall uinstall install
 327
 328 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 329
 330 bootpImage uImage: zImage
 331 zImage: Image
 332
 333 $(BOOT_TARGETS): vmlinux
 334         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 335         @$(kecho) '  Kernel: $(boot)/$@ is ready'
 336
 337 $(INSTALL_TARGETS):
 338         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 339
 340 PHONY += vdso_install
 341 vdso_install:
 342 ifeq ($(CONFIG_VDSO),y)
 343         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
 344 endif
 345
 346 # We use MRPROPER_FILES and CLEAN_FILES now
 347 archclean:
 348         $(Q)$(MAKE) $(clean)=$(boot)
 349
 350 # My testing targets (bypasses dependencies)
 351 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 352
 353
 354 define archhelp
 355   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 356   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 357   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 358   echo  '  uImage        - U-Boot wrapped zImage'
 359   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 360   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 361   echo  '  install       - Install uncompressed kernel'
 362   echo  '  zinstall      - Install compressed kernel'
 363   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 364   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 365   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 366   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 367   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
 368 endef