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  29 # Do not use arch/arm/defconfig - it's always outdated.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 ($(CONFIG_CPU_BIG_ENDIAN),y)
  44 KBUILD_CPPFLAGS += -mbig-endian
  45 AS              += -EB
  46 LD              += -EB
  47 else
  48 KBUILD_CPPFLAGS += -mlittle-endian
  49 AS              += -EL
  50 LD              += -EL
  51 endif
  52
  53 # This selects which instruction set is used.
  54 # Note that GCC does not numerically define an architecture version
  55 # macro, but instead defines a whole series of macros which makes
  56 # testing for a specific architecture or later rather impossible.
  57 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  58 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  59 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  60 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  61 # always available in ARMv7
  62 ifeq ($(CONFIG_CPU_32v6),y)
  63 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  64 endif
  65 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  66 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  67 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  68 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3
  69
  70 # Evaluate arch cc-option calls now
  71 arch-y := $(arch-y)
  72
  73 # This selects how we optimise for the processor.
  74 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  75 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  76 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  77 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  78 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  79 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  80 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  81 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  82 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  83 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  84 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  85 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
  86 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
  87 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  88 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  89 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  90 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  91 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  92
  93 # Evaluate tune cc-option calls now
  94 tune-y := $(tune-y)
  95
  96 ifeq ($(CONFIG_AEABI),y)
  97 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
  98 else
  99 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 100 endif
 101
 102 ifeq ($(CONFIG_ARM_UNWIND),y)
 103 CFLAGS_ABI      +=-funwind-tables
 104 endif
 105
 106 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 107 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 108 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 109 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 110 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 111 # Work around buggy relocation from gas if requested:
 112 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 113 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 114 endif
 115 else
 116 CFLAGS_ISA      :=$(call cc-option,-marm,)
 117 AFLAGS_ISA      :=$(CFLAGS_ISA)
 118 endif
 119
 120 # Need -Uarm for gcc < 3.x
 121 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 122 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 123
 124 CHECKFLAGS      += -D__arm__
 125
 126 #Default value
 127 head-y          := arch/arm/kernel/head$(MMUEXT).o
 128
 129 # Text offset. This list is sorted numerically by address in order to
 130 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 131 textofs-y       := 0x00008000
 132 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 133 # We don't want the htc bootloader to corrupt kernel during resume
 134 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 135 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 136 ifeq ($(CONFIG_ARCH_SA1100),y)
 137 textofs-$(CONFIG_SA1111) := 0x00208000
 138 endif
 139 textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 140 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 141 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 142 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 143
 144 # Machine directory name.  This list is sorted alphanumerically
 145 # by CONFIG_* macro name.
 146 machine-$(CONFIG_ARCH_AT91)             += at91
 147 machine-$(CONFIG_ARCH_AXXIA)            += axxia
 148 machine-$(CONFIG_ARCH_BCM)              += bcm
 149 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 150 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 151 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 152 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 153 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
 154 machine-$(CONFIG_ARCH_DOVE)             += dove
 155 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 156 machine-$(CONFIG_ARCH_EFM32)            += efm32
 157 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 158 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 159 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 160 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 161 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 162 machine-$(CONFIG_ARCH_HISI)             += hisi
 163 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 164 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 165 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 166 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 167 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 168 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 169 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 170 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 171 machine-$(CONFIG_ARCH_MESON)            += meson
 172 machine-$(CONFIG_ARCH_MMP)              += mmp
 173 machine-$(CONFIG_ARCH_MOXART)           += moxart
 174 machine-$(CONFIG_ARCH_MSM)              += msm
 175 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 176 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 177 machine-$(CONFIG_ARCH_MXC)              += imx
 178 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 179 machine-$(CONFIG_ARCH_MXS)              += mxs
 180 machine-$(CONFIG_ARCH_NETX)             += netx
 181 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 182 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 183 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 184 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 185 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 186 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 187 machine-$(CONFIG_ARCH_PXA)              += pxa
 188 machine-$(CONFIG_ARCH_QCOM)             += qcom
 189 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 190 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 191 machine-$(CONFIG_ARCH_RPC)              += rpc
 192 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 193 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 194 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 195 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 196 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 197 machine-$(CONFIG_ARCH_SIRF)             += prima2
 198 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 199 machine-$(CONFIG_ARCH_STI)              += sti
 200 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 201 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 202 machine-$(CONFIG_ARCH_U300)             += u300
 203 machine-$(CONFIG_ARCH_U8500)            += ux500
 204 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 205 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 206 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 207 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 208 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 209 machine-$(CONFIG_PLAT_SPEAR)            += spear
 210
 211 # Platform directory name.  This list is sorted alphanumerically
 212 # by CONFIG_* macro name.
 213 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 214 plat-$(CONFIG_ARCH_OMAP)        += omap
 215 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 216 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 217 plat-$(CONFIG_PLAT_IOP)         += iop
 218 plat-$(CONFIG_PLAT_ORION)       += orion
 219 plat-$(CONFIG_PLAT_PXA)         += pxa
 220 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 221 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 222
 223 ifeq ($(CONFIG_ARCH_EBSA110),y)
 224 # This is what happens if you forget the IOCS16 line.
 225 # PCMCIA cards stop working.
 226 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 227 export CFLAGS_3c589_cs.o
 228 endif
 229
 230 # The byte offset of the kernel image in RAM from the start of RAM.
 231 TEXT_OFFSET := $(textofs-y)
 232
 233 # The first directory contains additional information for the boot setup code
 234 ifneq ($(machine-y),)
 235 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 236 else
 237 MACHINE  :=
 238 endif
 239 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 240 MACHINE  :=
 241 endif
 242
 243 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 244 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 245
 246 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 247 ifeq ($(KBUILD_SRC),)
 248 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 249 else
 250 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 251 endif
 252 endif
 253
 254 export  TEXT_OFFSET GZFLAGS MMUEXT
 255
 256 # Do we have FASTFPE?
 257 FASTFPE         :=arch/arm/fastfpe
 258 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 259 FASTFPE_OBJ     :=$(FASTFPE)/
 260 endif
 261
 262 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 263 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 264 core-$(CONFIG_VFP)              += arch/arm/vfp/
 265 core-$(CONFIG_XEN)              += arch/arm/xen/
 266 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 267 core-$(CONFIG_VDSO)             += arch/arm/vdso/
 268
 269 # If we have a machine-specific directory, then include it in the build.
 270 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 271 core-y                          += arch/arm/probes/
 272 core-y                          += arch/arm/net/
 273 core-y                          += arch/arm/crypto/
 274 core-y                          += arch/arm/firmware/
 275 core-y                          += $(machdirs) $(platdirs)
 276
 277 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 278
 279 libs-y                          := arch/arm/lib/ $(libs-y)
 280
 281 # Default target when executing plain make
 282 ifeq ($(CONFIG_XIP_KERNEL),y)
 283 KBUILD_IMAGE := xipImage
 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 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 304 INSTALL_TARGETS = zinstall uinstall install
 305
 306 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 307
 308 $(BOOT_TARGETS): vmlinux
 309         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 310
 311 $(INSTALL_TARGETS):
 312         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 313
 314 %.dtb: | scripts
 315         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 316
 317 PHONY += dtbs dtbs_install
 318
 319 dtbs: prepare scripts
 320         $(Q)$(MAKE) $(build)=$(boot)/dts
 321
 322 dtbs_install:
 323         $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 324
 325 PHONY += vdso_install
 326 vdso_install:
 327 ifeq ($(CONFIG_VDSO),y)
 328         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
 329 endif
 330
 331 # We use MRPROPER_FILES and CLEAN_FILES now
 332 archclean:
 333         $(Q)$(MAKE) $(clean)=$(boot)
 334
 335 # My testing targets (bypasses dependencies)
 336 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 337 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 338
 339
 340 define archhelp
 341   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 342   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 343   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 344   echo  '  uImage        - U-Boot wrapped zImage'
 345   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 346   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 347   echo  '* dtbs          - Build device tree blobs for enabled boards'
 348   echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
 349   echo  '  install       - Install uncompressed kernel'
 350   echo  '  zinstall      - Install compressed kernel'
 351   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 352   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 353   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 354   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 355   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
 356 endef