linux/arch/arm/Makefile
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   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
  14LDFLAGS         :=
  15
  16LDFLAGS_vmlinux :=-p --no-undefined -X
  17ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  18LDFLAGS_vmlinux += --be8
  19endif
  20
  21OBJCOPYFLAGS    :=-O binary -R .comment -S
  22GZFLAGS         :=-9
  23#KBUILD_CFLAGS  +=-pipe
  24
  25# Never generate .eh_frame
  26KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
  27
  28# Do not use arch/arm/defconfig - it's always outdated.
  29# Select a platform tht is kept up-to-date
  30KBUILD_DEFCONFIG := versatile_defconfig
  31
  32# defines filename extension depending memory management type.
  33ifeq ($(CONFIG_MMU),)
  34MMUEXT          := -nommu
  35KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
  36endif
  37
  38ifeq ($(CONFIG_FRAME_POINTER),y)
  39KBUILD_CFLAGS   +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
  40endif
  41
  42ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
  43KBUILD_CFLAGS   +=-fstack-protector
  44endif
  45
  46ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
  47KBUILD_CPPFLAGS += -mbig-endian
  48AS              += -EB
  49LD              += -EB
  50else
  51KBUILD_CPPFLAGS += -mlittle-endian
  52AS              += -EL
  53LD              += -EL
  54endif
  55
  56comma = ,
  57
  58# This selects which instruction set is used.
  59# Note that GCC does not numerically define an architecture version
  60# macro, but instead defines a whole series of macros which makes
  61# testing for a specific architecture or later rather impossible.
  62arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
  63arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  64arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
  65# Only override the compiler option if ARMv6. The ARMv6K extensions are
  66# always available in ARMv7
  67ifeq ($(CONFIG_CPU_32v6),y)
  68arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
  69endif
  70arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  71arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
  72arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
  73arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3
  74
  75# Evaluate arch cc-option calls now
  76arch-y := $(arch-y)
  77
  78# This selects how we optimise for the processor.
  79tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
  80tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
  81tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
  82tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
  83tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
  84tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  85tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
  86tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
  87tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
  88tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
  89tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
  90tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
  91tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
  92tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  93tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  94tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  95tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  96tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  97
  98# Evaluate tune cc-option calls now
  99tune-y := $(tune-y)
 100
 101ifeq ($(CONFIG_AEABI),y)
 102CFLAGS_ABI      :=-mabi=aapcs-linux -mno-thumb-interwork
 103else
 104CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
 105endif
 106
 107ifeq ($(CONFIG_ARM_UNWIND),y)
 108CFLAGS_ABI      +=-funwind-tables
 109endif
 110
 111ifeq ($(CONFIG_THUMB2_KERNEL),y)
 112AFLAGS_AUTOIT   :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
 113AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
 114CFLAGS_ISA      :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
 115AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
 116# Work around buggy relocation from gas if requested:
 117ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
 118CFLAGS_MODULE   +=-fno-optimize-sibling-calls
 119endif
 120else
 121CFLAGS_ISA      :=$(call cc-option,-marm,)
 122AFLAGS_ISA      :=$(CFLAGS_ISA)
 123endif
 124
 125# Need -Uarm for gcc < 3.x
 126KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
 127KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
 128
 129CHECKFLAGS      += -D__arm__
 130
 131#Default value
 132head-y          := arch/arm/kernel/head$(MMUEXT).o
 133textofs-y       := 0x00008000
 134textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
 135# We don't want the htc bootloader to corrupt kernel during resume
 136textofs-$(CONFIG_PM_H1940)      := 0x00108000
 137# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
 138ifeq ($(CONFIG_ARCH_SA1100),y)
 139textofs-$(CONFIG_SA1111) := 0x00208000
 140endif
 141textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
 142textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
 143textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
 144
 145# Machine directory name.  This list is sorted alphanumerically
 146# by CONFIG_* macro name.
 147machine-$(CONFIG_ARCH_AT91)             += at91
 148machine-$(CONFIG_ARCH_BCM)              += bcm
 149machine-$(CONFIG_ARCH_BCM2835)          += bcm2835
 150machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
 151machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
 152machine-$(CONFIG_ARCH_DAVINCI)          += davinci
 153machine-$(CONFIG_ARCH_DOVE)             += dove
 154machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
 155machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
 156machine-$(CONFIG_ARCH_EXYNOS)           += exynos
 157machine-$(CONFIG_ARCH_GEMINI)           += gemini
 158machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
 159machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
 160machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
 161machine-$(CONFIG_ARCH_IOP32X)           += iop32x
 162machine-$(CONFIG_ARCH_IOP33X)           += iop33x
 163machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
 164machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
 165machine-$(CONFIG_ARCH_KIRKWOOD)         += kirkwood
 166machine-$(CONFIG_ARCH_KS8695)           += ks8695
 167machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
 168machine-$(CONFIG_ARCH_MMP)              += mmp
 169machine-$(CONFIG_ARCH_MSM)              += msm
 170machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
 171machine-$(CONFIG_ARCH_MVEBU)            += mvebu
 172machine-$(CONFIG_ARCH_MXC)              += imx
 173machine-$(CONFIG_ARCH_MXS)              += mxs
 174machine-$(CONFIG_ARCH_NETX)             += netx
 175machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
 176machine-$(CONFIG_ARCH_NSPIRE)           += nspire
 177machine-$(CONFIG_ARCH_OMAP1)            += omap1
 178machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
 179machine-$(CONFIG_ARCH_ORION5X)          += orion5x
 180machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
 181machine-$(CONFIG_ARCH_PXA)              += pxa
 182machine-$(CONFIG_ARCH_REALVIEW)         += realview
 183machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
 184machine-$(CONFIG_ARCH_RPC)              += rpc
 185machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
 186machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
 187machine-$(CONFIG_ARCH_S5P64X0)          += s5p64x0
 188machine-$(CONFIG_ARCH_S5PC100)          += s5pc100
 189machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
 190machine-$(CONFIG_ARCH_SA1100)           += sa1100
 191machine-$(CONFIG_ARCH_SHARK)            += shark
 192machine-$(CONFIG_ARCH_SHMOBILE)         += shmobile
 193machine-$(CONFIG_ARCH_SIRF)             += prima2
 194machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
 195machine-$(CONFIG_ARCH_STI)              += sti
 196machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 197machine-$(CONFIG_ARCH_TEGRA)            += tegra
 198machine-$(CONFIG_ARCH_U300)             += u300
 199machine-$(CONFIG_ARCH_U8500)            += ux500
 200machine-$(CONFIG_ARCH_VERSATILE)        += versatile
 201machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
 202machine-$(CONFIG_ARCH_VIRT)             += virt
 203machine-$(CONFIG_ARCH_VT8500)           += vt8500
 204machine-$(CONFIG_ARCH_W90X900)          += w90x900
 205machine-$(CONFIG_ARCH_ZYNQ)             += zynq
 206machine-$(CONFIG_FOOTBRIDGE)            += footbridge
 207machine-$(CONFIG_PLAT_SPEAR)            += spear
 208
 209# Platform directory name.  This list is sorted alphanumerically
 210# by CONFIG_* macro name.
 211plat-$(CONFIG_ARCH_EXYNOS)      += samsung
 212plat-$(CONFIG_ARCH_OMAP)        += omap
 213plat-$(CONFIG_ARCH_S3C64XX)     += samsung
 214plat-$(CONFIG_PLAT_IOP)         += iop
 215plat-$(CONFIG_PLAT_ORION)       += orion
 216plat-$(CONFIG_PLAT_PXA)         += pxa
 217plat-$(CONFIG_PLAT_S3C24XX)     += samsung
 218plat-$(CONFIG_PLAT_S5P)         += samsung
 219plat-$(CONFIG_PLAT_VERSATILE)   += versatile
 220
 221ifeq ($(CONFIG_ARCH_EBSA110),y)
 222# This is what happens if you forget the IOCS16 line.
 223# PCMCIA cards stop working.
 224CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
 225export CFLAGS_3c589_cs.o
 226endif
 227
 228# The byte offset of the kernel image in RAM from the start of RAM.
 229TEXT_OFFSET := $(textofs-y)
 230
 231# The first directory contains additional information for the boot setup code
 232ifneq ($(machine-y),)
 233MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
 234else
 235MACHINE  :=
 236endif
 237ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 238MACHINE  :=
 239endif
 240
 241machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 242platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
 243
 244ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
 245ifeq ($(KBUILD_SRC),)
 246KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
 247else
 248KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
 249endif
 250endif
 251
 252export  TEXT_OFFSET GZFLAGS MMUEXT
 253
 254# Do we have FASTFPE?
 255FASTFPE         :=arch/arm/fastfpe
 256ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
 257FASTFPE_OBJ     :=$(FASTFPE)/
 258endif
 259
 260core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
 261core-$(CONFIG_FPE_FASTFPE)      += $(FASTFPE_OBJ)
 262core-$(CONFIG_VFP)              += arch/arm/vfp/
 263core-$(CONFIG_XEN)              += arch/arm/xen/
 264core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
 265
 266# If we have a machine-specific directory, then include it in the build.
 267core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
 268core-y                          += arch/arm/net/
 269core-y                          += arch/arm/crypto/
 270core-y                          += $(machdirs) $(platdirs)
 271
 272drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
 273
 274libs-y                          := arch/arm/lib/ $(libs-y)
 275
 276# Default target when executing plain make
 277ifeq ($(CONFIG_XIP_KERNEL),y)
 278KBUILD_IMAGE := xipImage
 279else
 280KBUILD_IMAGE := zImage
 281endif
 282
 283# Build the DT binary blobs if we have OF configured
 284ifeq ($(CONFIG_USE_OF),y)
 285KBUILD_DTBS := dtbs
 286endif
 287
 288all:    $(KBUILD_IMAGE) $(KBUILD_DTBS)
 289
 290boot := arch/arm/boot
 291
 292archprepare:
 293        $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
 294
 295# Convert bzImage to zImage
 296bzImage: zImage
 297
 298zImage Image xipImage bootpImage uImage: vmlinux
 299        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 300
 301zinstall uinstall install: vmlinux
 302        $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 303
 304%.dtb: | scripts
 305        $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 306
 307PHONY += dtbs
 308dtbs: scripts
 309        $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 310
 311# We use MRPROPER_FILES and CLEAN_FILES now
 312archclean:
 313        $(Q)$(MAKE) $(clean)=$(boot)
 314
 315# My testing targets (bypasses dependencies)
 316bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
 317i zi:;  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 318
 319
 320define archhelp
 321  echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
 322  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
 323  echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
 324  echo  '  uImage        - U-Boot wrapped zImage'
 325  echo  '  bootpImage    - Combined zImage and initial RAM disk'
 326  echo  '                  (supply initrd image via make variable INITRD=<path>)'
 327  echo  '* dtbs          - Build device tree blobs for enabled boards'
 328  echo  '  install       - Install uncompressed kernel'
 329  echo  '  zinstall      - Install compressed kernel'
 330  echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
 331  echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
 332  echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
 333  echo  '                  install to $$(INSTALL_PATH) and run lilo'
 334endef
 335