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 endif
  20
  21 OBJCOPYFLAGS    :=-O binary -R .comment -S
  22 GZFLAGS         :=-9
  23 #KBUILD_CFLAGS  +=-pipe
  24
  25 # Never generate .eh_frame
  26 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  27
  28 # Do not use arch/arm/defconfig - it's always outdated.
  29 # Select a platform tht is kept up-to-date
  30 KBUILD_DEFCONFIG := versatile_defconfig
  31
  32 # defines filename extension depending memory management type.
  33 ifeq ($(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 -mapcs -mno-sched-prolog
  40 endif
  41
  42 ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
  43 KBUILD_CFLAGS   +=-fstack-protector
  44 endif
  45
  46 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  47 KBUILD_CPPFLAGS += -mbig-endian
  48 AS              += -EB
  49 LD              += -EB
  50 else
  51 KBUILD_CPPFLAGS += -mlittle-endian
  52 AS              += -EL
  53 LD              += -EL
  54 endif
  55
  56 comma = ,
  57
  58 #
  59 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
  60 # later may result in code being generated that handles signed short and signed
  61 # char struct members incorrectly. So disable it.
  62 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
  63 #
  64 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
  65
  66 # This selects which instruction set is used.
  67 # Note that GCC does not numerically define an architecture version
  68 # macro, but instead defines a whole series of macros which makes
  69 # testing for a specific architecture or later rather impossible.
  70 arch-$(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 # This selects how we optimise for the processor.
  83 tune-$(CONFIG_CPU_ARM7TDMI)     :=-mtune=arm7tdmi
  84 tune-$(CONFIG_CPU_ARM720T)      :=-mtune=arm7tdmi
  85 tune-$(CONFIG_CPU_ARM740T)      :=-mtune=arm7tdmi
  86 tune-$(CONFIG_CPU_ARM9TDMI)     :=-mtune=arm9tdmi
  87 tune-$(CONFIG_CPU_ARM940T)      :=-mtune=arm9tdmi
  88 tune-$(CONFIG_CPU_ARM946E)      :=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  89 tune-$(CONFIG_CPU_ARM920T)      :=-mtune=arm9tdmi
  90 tune-$(CONFIG_CPU_ARM922T)      :=-mtune=arm9tdmi
  91 tune-$(CONFIG_CPU_ARM925T)      :=-mtune=arm9tdmi
  92 tune-$(CONFIG_CPU_ARM926T)      :=-mtune=arm9tdmi
  93 tune-$(CONFIG_CPU_FA526)        :=-mtune=arm9tdmi
  94 tune-$(CONFIG_CPU_SA110)        :=-mtune=strongarm110
  95 tune-$(CONFIG_CPU_SA1100)       :=-mtune=strongarm1100
  96 tune-$(CONFIG_CPU_XSCALE)       :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  97 tune-$(CONFIG_CPU_XSC3)         :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  98 tune-$(CONFIG_CPU_FEROCEON)     :=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  99 tune-$(CONFIG_CPU_V6)           :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 100 tune-$(CONFIG_CPU_V6K)          :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
 101
 102 ifeq ($(CONFIG_AEABI),y)
 103 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork
 104 else
 105 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 106 endif
 107
 108 ifeq ($(CONFIG_ARM_UNWIND),y)
 109 CFLAGS_ABI      +=-funwind-tables
 110 endif
 111
 112 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 113 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 114 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 115 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 116 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 117 # Work around buggy relocation from gas if requested:
 118 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 119 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 120 endif
 121 else
 122 CFLAGS_ISA      :=$(call cc-option,-marm,)
 123 AFLAGS_ISA      :=$(CFLAGS_ISA)
 124 endif
 125
 126 # Need -Uarm for gcc < 3.x
 127 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 128 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 129
 130 CHECKFLAGS      += -D__arm__
 131
 132 #Default value
 133 head-y          := arch/arm/kernel/head$(MMUEXT).o
 134 textofs-y       := 0x00008000
 135 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 136 # We don't want the htc bootloader to corrupt kernel during resume
 137 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 138 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 139 ifeq ($(CONFIG_ARCH_SA1100),y)
 140 textofs-$(CONFIG_SA1111) := 0x00208000
 141 endif
 142 textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 143 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 144 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 145
 146 # Machine directory name.  This list is sorted alphanumerically
 147 # by CONFIG_* macro name.
 148 machine-$(CONFIG_ARCH_AT91)             += at91
 149 machine-$(CONFIG_ARCH_BCM)              += bcm
 150 machine-$(CONFIG_ARCH_BCM2835)          += bcm2835
 151 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 152 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 153 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 154 machine-$(CONFIG_ARCH_DOVE)             += dove
 155 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 156 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 157 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 158 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 159 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 160 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 161 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 162 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 163 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 164 machine-$(CONFIG_ARCH_KIRKWOOD)         += kirkwood
 165 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 166 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 167 machine-$(CONFIG_ARCH_MMP)              += mmp
 168 machine-$(CONFIG_ARCH_MSM)              += msm
 169 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 170 machine-$(CONFIG_ARCH_MXC)              += imx
 171 machine-$(CONFIG_ARCH_MXS)              += mxs
 172 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 173 machine-$(CONFIG_ARCH_NETX)             += netx
 174 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 175 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 176 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 177 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 178 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 179 machine-$(CONFIG_ARCH_PRIMA2)           += prima2
 180 machine-$(CONFIG_ARCH_PXA)              += pxa
 181 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 182 machine-$(CONFIG_ARCH_RPC)              += rpc
 183 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 184 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 185 machine-$(CONFIG_ARCH_S5P64X0)          += s5p64x0
 186 machine-$(CONFIG_ARCH_S5PC100)          += s5pc100
 187 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 188 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 189 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 190 machine-$(CONFIG_ARCH_SHARK)            += shark
 191 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 192 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 193 machine-$(CONFIG_ARCH_U300)             += u300
 194 machine-$(CONFIG_ARCH_U8500)            += ux500
 195 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 196 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 197 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 198 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 199 machine-$(CONFIG_FOOTBRIDGE)            += footbridge
 200 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 201 machine-$(CONFIG_PLAT_SPEAR)            += spear
 202 machine-$(CONFIG_ARCH_VIRT)             += virt
 203 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 204 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 205
 206 # Platform directory name.  This list is sorted alphanumerically
 207 # by CONFIG_* macro name.
 208 plat-$(CONFIG_ARCH_OMAP)        += omap
 209 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 210 plat-$(CONFIG_PLAT_IOP)         += iop
 211 plat-$(CONFIG_PLAT_ORION)       += orion
 212 plat-$(CONFIG_PLAT_PXA)         += pxa
 213 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 214 plat-$(CONFIG_PLAT_S5P)         += samsung
 215 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 216
 217 ifeq ($(CONFIG_ARCH_EBSA110),y)
 218 # This is what happens if you forget the IOCS16 line.
 219 # PCMCIA cards stop working.
 220 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 221 export CFLAGS_3c589_cs.o
 222 endif
 223
 224 # The byte offset of the kernel image in RAM from the start of RAM.
 225 TEXT_OFFSET := $(textofs-y)
 226
 227 # The first directory contains additional information for the boot setup code
 228 ifneq ($(machine-y),)
 229 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 230 else
 231 MACHINE  :=
 232 endif
 233 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 234 MACHINE  :=
 235 endif
 236
 237 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 238 platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
 239
 240 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 241 ifeq ($(KBUILD_SRC),)
 242 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 243 else
 244 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 245 endif
 246 endif
 247
 248 export  TEXT_OFFSET GZFLAGS MMUEXT
 249
 250 # Do we have FASTFPE?
 251 FASTFPE         :=arch/arm/fastfpe
 252 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 253 FASTFPE_OBJ     :=$(FASTFPE)/
 254 endif
 255
 256 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 257 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 258 core-$(CONFIG_VFP)              += arch/arm/vfp/
 259 core-$(CONFIG_XEN)              += arch/arm/xen/
 260 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 261
 262 # If we have a machine-specific directory, then include it in the build.
 263 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 264 core-y                          += arch/arm/net/
 265 core-y                          += arch/arm/crypto/
 266 core-y                          += $(machdirs) $(platdirs)
 267
 268 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 269
 270 libs-y                          := arch/arm/lib/ $(libs-y)
 271
 272 # Default target when executing plain make
 273 ifeq ($(CONFIG_XIP_KERNEL),y)
 274 KBUILD_IMAGE := xipImage
 275 else
 276 KBUILD_IMAGE := zImage
 277 endif
 278
 279 # Build the DT binary blobs if we have OF configured
 280 ifeq ($(CONFIG_USE_OF),y)
 281 KBUILD_DTBS := dtbs
 282 endif
 283
 284 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 285
 286 boot := arch/arm/boot
 287
 288 archprepare:
 289         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 290
 291 # Convert bzImage to zImage
 292 bzImage: zImage
 293
 294 zImage Image xipImage bootpImage uImage: vmlinux
 295         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 296
 297 zinstall uinstall install: vmlinux
 298         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 299
 300 %.dtb: scripts
 301         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 302
 303 dtbs: scripts
 304         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 305
 306 # We use MRPROPER_FILES and CLEAN_FILES now
 307 archclean:
 308         $(Q)$(MAKE) $(clean)=$(boot)
 309
 310 # My testing targets (bypasses dependencies)
 311 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 312 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 313
 314
 315 define archhelp
 316   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 317   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 318   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 319   echo  '  uImage        - U-Boot wrapped zImage'
 320   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 321   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 322   echo  '* dtbs          - Build device tree blobs for enabled boards'
 323   echo  '  install       - Install uncompressed kernel'
 324   echo  '  zinstall      - Install compressed kernel'
 325   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 326   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 327   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 328   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 329 endef