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
  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  29 # Do not use arch/arm/defconfig - it's always outdated.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 ($(CONFIG_CC_STACKPROTECTOR),y)
  44 KBUILD_CFLAGS   +=-fstack-protector
  45 endif
  46
  47 ifeq ($(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 comma = ,
  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_32v7)         :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  72 arch-$(CONFIG_CPU_32v6)         :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  73 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  74 # always available in ARMv7
  75 ifeq ($(CONFIG_CPU_32v6),y)
  76 arch-$(CONFIG_CPU_32v6K)        :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  77 endif
  78 arch-$(CONFIG_CPU_32v5)         :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  79 arch-$(CONFIG_CPU_32v4T)        :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
  80 arch-$(CONFIG_CPU_32v4)         :=-D__LINUX_ARM_ARCH__=4 -march=armv4
  81 arch-$(CONFIG_CPU_32v3)         :=-D__LINUX_ARM_ARCH__=3 -march=armv3
  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 ifeq ($(CONFIG_AEABI),y)
 104 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork
 105 else
 106 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 107 endif
 108
 109 ifeq ($(CONFIG_ARM_UNWIND),y)
 110 CFLAGS_ABI      +=-funwind-tables
 111 endif
 112
 113 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 114 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 115 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 116 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 117 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 118 # Work around buggy relocation from gas if requested:
 119 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 120 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 121 endif
 122 else
 123 CFLAGS_ISA      :=$(call cc-option,-marm,)
 124 AFLAGS_ISA      :=$(CFLAGS_ISA)
 125 endif
 126
 127 # Need -Uarm for gcc < 3.x
 128 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 129 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 130
 131 CHECKFLAGS      += -D__arm__
 132
 133 OBJCOPY_OUTPUT_FORMAT := elf32-littlearm
 134
 135 #Default value
 136 head-y          := arch/arm/kernel/head$(MMUEXT).o
 137 textofs-y       := 0x00008000
 138 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 139 # We don't want the htc bootloader to corrupt kernel during resume
 140 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 141 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 142 ifeq ($(CONFIG_ARCH_SA1100),y)
 143 textofs-$(CONFIG_SA1111) := 0x00208000
 144 endif
 145 textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 146 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 147 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 148
 149 # Machine directory name.  This list is sorted alphanumerically
 150 # by CONFIG_* macro name.
 151 machine-$(CONFIG_ARCH_AT91)             += at91
 152 machine-$(CONFIG_ARCH_BCM)              += bcm
 153 machine-$(CONFIG_ARCH_BCM2835)          += bcm2835
 154 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 155 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 156 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 157 machine-$(CONFIG_ARCH_DOVE)             += dove
 158 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 159 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 160 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 161 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 162 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 163 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 164 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 165 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 166 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 167 machine-$(CONFIG_ARCH_KIRKWOOD)         += kirkwood
 168 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 169 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 170 machine-$(CONFIG_ARCH_MMP)              += mmp
 171 machine-$(CONFIG_ARCH_MSM)              += msm
 172 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 173 machine-$(CONFIG_ARCH_MXC)              += imx
 174 machine-$(CONFIG_ARCH_MXS)              += mxs
 175 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 176 machine-$(CONFIG_ARCH_NETX)             += netx
 177 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 178 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 179 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 180 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 181 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 182 machine-$(CONFIG_ARCH_PRIMA2)           += prima2
 183 machine-$(CONFIG_ARCH_PXA)              += pxa
 184 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 185 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 186 machine-$(CONFIG_ARCH_RPC)              += rpc
 187 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 188 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 189 machine-$(CONFIG_ARCH_S5P64X0)          += s5p64x0
 190 machine-$(CONFIG_ARCH_S5PC100)          += s5pc100
 191 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 192 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 193 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 194 machine-$(CONFIG_ARCH_SHARK)            += shark
 195 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 196 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 197 machine-$(CONFIG_ARCH_U300)             += u300
 198 machine-$(CONFIG_ARCH_U8500)            += ux500
 199 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 200 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 201 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 202 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 203 machine-$(CONFIG_FOOTBRIDGE)            += footbridge
 204 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 205 machine-$(CONFIG_PLAT_SPEAR)            += spear
 206 machine-$(CONFIG_ARCH_VIRT)             += virt
 207 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 208 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 209
 210 # Platform directory name.  This list is sorted alphanumerically
 211 # by CONFIG_* macro name.
 212 plat-$(CONFIG_ARCH_OMAP)        += omap
 213 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 214 plat-$(CONFIG_PLAT_IOP)         += iop
 215 plat-$(CONFIG_PLAT_ORION)       += orion
 216 plat-$(CONFIG_PLAT_PXA)         += pxa
 217 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 218 plat-$(CONFIG_PLAT_S5P)         += samsung
 219 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 220
 221 ifeq ($(CONFIG_ARCH_EBSA110),y)
 222 # This is what happens if you forget the IOCS16 line.
 223 # PCMCIA cards stop working.
 224 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 225 export CFLAGS_3c589_cs.o
 226 endif
 227
 228 # The byte offset of the kernel image in RAM from the start of RAM.
 229 TEXT_OFFSET := $(textofs-y)
 230
 231 # The first directory contains additional information for the boot setup code
 232 ifneq ($(machine-y),)
 233 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 234 else
 235 MACHINE  :=
 236 endif
 237 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 238 MACHINE  :=
 239 endif
 240
 241 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 242 platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
 243
 244 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 245 ifeq ($(KBUILD_SRC),)
 246 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 247 else
 248 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 249 endif
 250 endif
 251
 252 export  TEXT_OFFSET GZFLAGS MMUEXT
 253
 254 # Do we have FASTFPE?
 255 FASTFPE         :=arch/arm/fastfpe
 256 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 257 FASTFPE_OBJ     :=$(FASTFPE)/
 258 endif
 259
 260 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 261 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 262 core-$(CONFIG_VFP)              += arch/arm/vfp/
 263 core-$(CONFIG_XEN)              += arch/arm/xen/
 264 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 265
 266 # If we have a machine-specific directory, then include it in the build.
 267 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 268 core-y                          += arch/arm/net/
 269 core-y                          += arch/arm/crypto/
 270 core-y                          += $(machdirs) $(platdirs)
 271
 272 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 273
 274 libs-y                          := arch/arm/lib/ $(libs-y)
 275
 276 PIE_LDS                         := arch/arm/kernel/pie.lds
 277 libpie-$(CONFIG_PIE)            += arch/arm/libpie/
 278
 279 # Default target when executing plain make
 280 ifeq ($(CONFIG_XIP_KERNEL),y)
 281 KBUILD_IMAGE := xipImage
 282 else ifeq ($(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE),y)
 283 KBUILD_IMAGE := zImage-dtb.$(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAME)
 284 else
 285 KBUILD_IMAGE := zImage
 286 endif
 287
 288 # Build the DT binary blobs if we have OF configured
 289 ifeq ($(CONFIG_USE_OF),y)
 290 KBUILD_DTBS := dtbs
 291 endif
 292
 293 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 294
 295 boot := arch/arm/boot
 296
 297 archprepare:
 298         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 299
 300 # Convert bzImage to zImage
 301 bzImage: zImage
 302
 303 zImage Image xipImage bootpImage uImage: vmlinux
 304         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 305
 306 zinstall uinstall install: vmlinux
 307         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 308
 309 %.dtb: scripts
 310         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 311
 312 dtbs: scripts
 313         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 314
 315 # We use MRPROPER_FILES and CLEAN_FILES now
 316 archclean:
 317         $(Q)$(MAKE) $(clean)=$(boot)
 318
 319 # My testing targets (bypasses dependencies)
 320 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 321 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 322
 323
 324 define archhelp
 325   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 326   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 327   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 328   echo  '  uImage        - U-Boot wrapped zImage'
 329   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 330   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 331   echo  '* dtbs          - Build device tree blobs for enabled boards'
 332   echo  '  install       - Install uncompressed kernel'
 333   echo  '  zinstall      - Install compressed kernel'
 334   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 335   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 336   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 337   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 338 endef
 339
 340 kernel.img: zImage
 341         $(Q)$(srctree)/mkkrnlimg $(objtree)/arch/arm/boot/zImage $(objtree)/kernel.img >/dev/null
 342         @echo '  Image:  kernel.img is ready'
 343
 344 %_kernel.img: %.dtb zImage
 345         $(Q)cat $(objtree)/arch/arm/boot/zImage $(objtree)/arch/arm/boot/dts/$*.dtb > $(objtree)/zImage-dtb && \
 346         $(srctree)/mkkrnlimg $(objtree)/zImage-dtb $(objtree)/kernel.img >/dev/null && \
 347         rm -f $(objtree)/zImage-dtb
 348         @echo '  Image:  kernel.img (with $*.dtb) is ready'
 349
 350 LOGO := $(notdir $(wildcard $(srctree)/logo.bmp))
 351 LOGO_KERNEL := $(notdir $(wildcard $(srctree)/logo_kernel.bmp))
 352 %.img: %.dtb kernel.img $(LOGO) $(LOGO_KERNEL)
 353         $(Q)$(srctree)/resource_tool $(objtree)/arch/arm/boot/dts/$*.dtb $(LOGO) $(LOGO_KERNEL)
 354         @echo '  Image:  resource.img (with $*.dtb $(LOGO) $(LOGO_KERNEL)) is ready'