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