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  29 # Do not use arch/arm/defconfig - it's always outdated.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 ($(CONFIG_CPU_BIG_ENDIAN),y)
  44 KBUILD_CPPFLAGS += -mbig-endian
  45 AS              += -EB
  46 LD              += -EB
  47 else
  48 KBUILD_CPPFLAGS += -mlittle-endian
  49 AS              += -EL
  50 LD              += -EL
  51 endif
  52
  53 comma = ,
  54
  55 # This selects which instruction set is used.
  56 # Note that GCC does not numerically define an architecture version
  57 # macro, but instead defines a whole series of macros which makes
  58 # testing for a specific architecture or later rather impossible.
  59 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  60 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  61 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  62 # Only override the compiler option if ARMv6. The ARMv6K extensions are
  63 # always available in ARMv7
  64 ifeq ($(CONFIG_CPU_32v6),y)
  65 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  66 endif
  67 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  68 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  69 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  70 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3
  71
  72 # Evaluate arch cc-option calls now
  73 arch-y := $(arch-y)
  74
  75 # This selects how we optimise for the processor.
  76 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  77 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  78 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  79 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  80 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  81 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  82 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  83 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  84 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  85 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  86 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  87 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
  88 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
  89 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  90 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  91 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  92 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  93 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  94
  95 # Evaluate tune cc-option calls now
  96 tune-y := $(tune-y)
  97
  98 ifeq ($(CONFIG_AEABI),y)
  99 CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
 100 else
 101 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 102 endif
 103
 104 ifeq ($(CONFIG_ARM_UNWIND),y)
 105 CFLAGS_ABI      +=-funwind-tables
 106 endif
 107
 108 ifeq ($(CONFIG_THUMB2_KERNEL),y)
 109 AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 110 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 111 CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 112 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 113 # Work around buggy relocation from gas if requested:
 114 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 115 CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 116 endif
 117 else
 118 CFLAGS_ISA      :=$(call cc-option,-marm,)
 119 AFLAGS_ISA      :=$(CFLAGS_ISA)
 120 endif
 121
 122 # Need -Uarm for gcc < 3.x
 123 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 124 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 125
 126 CHECKFLAGS      += -D__arm__
 127
 128 #Default value
 129 head-y          := arch/arm/kernel/head$(MMUEXT).o
 130
 131 # Text offset. This list is sorted numerically by address in order to
 132 # provide a means to avoid/resolve conflicts in multi-arch kernels.
 133 textofs-y       := 0x00008000
 134 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 135 # We don't want the htc bootloader to corrupt kernel during resume
 136 textofs-$(CONFIG_PM_H1940)      := 0x00108000
 137 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 138 ifeq ($(CONFIG_ARCH_SA1100),y)
 139 textofs-$(CONFIG_SA1111) := 0x00208000
 140 endif
 141 textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 142 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 143 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 144 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 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_AXXIA)            += axxia
 150 machine-$(CONFIG_ARCH_BCM)              += bcm
 151 machine-$(CONFIG_ARCH_BERLIN)           += berlin
 152 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 153 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 154 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 155 machine-$(CONFIG_ARCH_DOVE)             += dove
 156 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 157 machine-$(CONFIG_ARCH_EFM32)            += efm32
 158 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 159 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 160 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
 161 machine-$(CONFIG_ARCH_GEMINI)           += gemini
 162 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 163 machine-$(CONFIG_ARCH_HISI)             += hisi
 164 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 165 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 166 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 167 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 168 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 169 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 170 machine-$(CONFIG_ARCH_KS8695)           += ks8695
 171 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 172 machine-$(CONFIG_ARCH_MESON)            += meson
 173 machine-$(CONFIG_ARCH_MMP)              += mmp
 174 machine-$(CONFIG_ARCH_MOXART)           += moxart
 175 machine-$(CONFIG_ARCH_MSM)              += msm
 176 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 177 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 178 machine-$(CONFIG_ARCH_MXC)              += imx
 179 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
 180 machine-$(CONFIG_ARCH_MXS)              += mxs
 181 machine-$(CONFIG_ARCH_NETX)             += netx
 182 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 183 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 184 machine-$(CONFIG_ARCH_OMAP1)            += omap1
 185 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 186 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 187 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 188 machine-$(CONFIG_ARCH_PXA)              += pxa
 189 machine-$(CONFIG_ARCH_QCOM)             += qcom
 190 machine-$(CONFIG_ARCH_REALVIEW)         += realview
 191 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 192 machine-$(CONFIG_ARCH_RPC)              += rpc
 193 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 194 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 195 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 196 machine-$(CONFIG_ARCH_SA1100)           += sa1100
 197 machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 198 machine-$(CONFIG_ARCH_SIRF)             += prima2
 199 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 200 machine-$(CONFIG_ARCH_STI)              += sti
 201 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 202 machine-$(CONFIG_ARCH_TEGRA)            += tegra
 203 machine-$(CONFIG_ARCH_U300)             += u300
 204 machine-$(CONFIG_ARCH_U8500)            += ux500
 205 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 206 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 207 machine-$(CONFIG_ARCH_VT8500)           += vt8500
 208 machine-$(CONFIG_ARCH_W90X900)          += w90x900
 209 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 210 machine-$(CONFIG_PLAT_SPEAR)            += spear
 211
 212 # Platform directory name.  This list is sorted alphanumerically
 213 # by CONFIG_* macro name.
 214 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 215 plat-$(CONFIG_ARCH_OMAP)        += omap
 216 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 217 plat-$(CONFIG_ARCH_S5PV210)     += samsung
 218 plat-$(CONFIG_PLAT_IOP)         += iop
 219 plat-$(CONFIG_PLAT_ORION)       += orion
 220 plat-$(CONFIG_PLAT_PXA)         += pxa
 221 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 222 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 223
 224 ifeq ($(CONFIG_ARCH_EBSA110),y)
 225 # This is what happens if you forget the IOCS16 line.
 226 # PCMCIA cards stop working.
 227 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 228 export CFLAGS_3c589_cs.o
 229 endif
 230
 231 # The byte offset of the kernel image in RAM from the start of RAM.
 232 TEXT_OFFSET := $(textofs-y)
 233
 234 # The first directory contains additional information for the boot setup code
 235 ifneq ($(machine-y),)
 236 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 237 else
 238 MACHINE  :=
 239 endif
 240 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 241 MACHINE  :=
 242 endif
 243
 244 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 245 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
 246
 247 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 248 ifeq ($(KBUILD_SRC),)
 249 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 250 else
 251 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 252 endif
 253 endif
 254
 255 export  TEXT_OFFSET GZFLAGS MMUEXT
 256
 257 # Do we have FASTFPE?
 258 FASTFPE         :=arch/arm/fastfpe
 259 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 260 FASTFPE_OBJ     :=$(FASTFPE)/
 261 endif
 262
 263 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 264 core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 265 core-$(CONFIG_VFP)              += arch/arm/vfp/
 266 core-$(CONFIG_XEN)              += arch/arm/xen/
 267 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 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/net/
 272 core-y                          += arch/arm/crypto/
 273 core-y                          += arch/arm/firmware/
 274 core-y                          += $(machdirs) $(platdirs)
 275
 276 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 277
 278 libs-y                          := arch/arm/lib/ $(libs-y)
 279
 280 # Default target when executing plain make
 281 ifeq ($(CONFIG_XIP_KERNEL),y)
 282 KBUILD_IMAGE := xipImage
 283 else
 284 KBUILD_IMAGE := zImage
 285 endif
 286
 287 # Build the DT binary blobs if we have OF configured
 288 ifeq ($(CONFIG_USE_OF),y)
 289 KBUILD_DTBS := dtbs
 290 endif
 291
 292 all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 293
 294 boot := arch/arm/boot
 295
 296 archprepare:
 297         $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 298
 299 # Convert bzImage to zImage
 300 bzImage: zImage
 301
 302 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
 303 INSTALL_TARGETS = zinstall uinstall install
 304
 305 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
 306
 307 $(BOOT_TARGETS): vmlinux
 308         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 309
 310 $(INSTALL_TARGETS):
 311         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 312
 313 %.dtb: | scripts
 314         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 315
 316 PHONY += dtbs dtbs_install
 317 dtbs dtbs_install: prepare scripts
 318         $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $@
 319
 320 # We use MRPROPER_FILES and CLEAN_FILES now
 321 archclean:
 322         $(Q)$(MAKE) $(clean)=$(boot)
 323
 324 # My testing targets (bypasses dependencies)
 325 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 326 i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 327
 328
 329 define archhelp
 330   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 331   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 332   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 333   echo  '  uImage        - U-Boot wrapped zImage'
 334   echo  '  bootpImage    - Combined zImage and initial RAM disk'
 335   echo  '                  (supply initrd image via make variable INITRD=<path>)'
 336   echo  '* dtbs          - Build device tree blobs for enabled boards'
 337   echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
 338   echo  '  install       - Install uncompressed kernel'
 339   echo  '  zinstall      - Install compressed kernel'
 340   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 341   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 342   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 343   echo  '                  install to $$(INSTALL_PATH) and run lilo'
 344 endef