#
  # arch/arm/Makefile
  #

  # This file is included by the global makefile so that you can add your own
  # architecture-specific flags and dependencies.
  #

  # This file is subject to the terms and conditions of the GNU General Public
  # License.  See the file "COPYING" in the main directory of this archive
  # for more details.
  #
  # Copyright (C) 1995-2001 by Russell King

  LDFLAGS_vmlinux	:= --no-undefined -X --pic-veneer

  ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
  LDFLAGS_vmlinux	+= --be8

  KBUILD_LDFLAGS_MODULE	+= --be8

  endif

  GZFLAGS		:=-9

  #KBUILD_CFLAGS	+=-pipe

  # Never generate .eh_frame
  KBUILD_CFLAGS	+= $(call cc-option,-fno-dwarf2-cfi-asm)

  # This should work on most of the modern platforms
  KBUILD_DEFCONFIG := multi_v7_defconfig

  # defines filename extension depending memory management type.

  ifeq ($(CONFIG_MMU),)
  MMUEXT		:= -nommu

  KBUILD_CFLAGS	+= $(call cc-option,-mno-unaligned-access)

  endif

  ifeq ($(CONFIG_FRAME_POINTER),y)

  KBUILD_CFLAGS	+=-fno-omit-frame-pointer
  ifeq ($(CONFIG_CC_IS_GCC),y)
  KBUILD_CFLAGS += -mapcs -mno-sched-prolog
  endif

  endif
  
  ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)

  KBUILD_CPPFLAGS	+= -mbig-endian

  CHECKFLAGS	+= -D__ARMEB__

  KBUILD_LDFLAGS	+= -EB

  else

  KBUILD_CPPFLAGS	+= -mlittle-endian

  CHECKFLAGS	+= -D__ARMEL__

  KBUILD_LDFLAGS	+= -EL

  endif

  #
  # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
  # later may result in code being generated that handles signed short and signed
  # char struct members incorrectly. So disable it.
  # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
  #
  KBUILD_CFLAGS	+= $(call cc-option,-fno-ipa-sra)

  # This selects which instruction set is used.
  # Note that GCC does not numerically define an architecture version
  # macro, but instead defines a whole series of macros which makes
  # testing for a specific architecture or later rather impossible.

  arch-$(CONFIG_CPU_32v7M)	=-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m

  arch-$(CONFIG_CPU_32v7)		=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
  arch-$(CONFIG_CPU_32v6)		=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)

  # Only override the compiler option if ARMv6. The ARMv6K extensions are
  # always available in ARMv7
  ifeq ($(CONFIG_CPU_32v6),y)

  arch-$(CONFIG_CPU_32v6K)	=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)

  endif

  arch-$(CONFIG_CPU_32v5)		=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
  arch-$(CONFIG_CPU_32v4T)	=-D__LINUX_ARM_ARCH__=4 -march=armv4t
  arch-$(CONFIG_CPU_32v4)		=-D__LINUX_ARM_ARCH__=4 -march=armv4

  arch-$(CONFIG_CPU_32v3)		=-D__LINUX_ARM_ARCH__=3 -march=armv3m

  
  # Evaluate arch cc-option calls now
  arch-y := $(arch-y)

  
  # This selects how we optimise for the processor.

  tune-$(CONFIG_CPU_ARM7TDMI)	=-mtune=arm7tdmi
  tune-$(CONFIG_CPU_ARM720T)	=-mtune=arm7tdmi
  tune-$(CONFIG_CPU_ARM740T)	=-mtune=arm7tdmi
  tune-$(CONFIG_CPU_ARM9TDMI)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_ARM940T)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_ARM946E)	=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
  tune-$(CONFIG_CPU_ARM920T)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_ARM922T)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_ARM925T)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_ARM926T)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_FA526)	=-mtune=arm9tdmi
  tune-$(CONFIG_CPU_SA110)	=-mtune=strongarm110
  tune-$(CONFIG_CPU_SA1100)	=-mtune=strongarm1100
  tune-$(CONFIG_CPU_XSCALE)	=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  tune-$(CONFIG_CPU_XSC3)		=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
  tune-$(CONFIG_CPU_FEROCEON)	=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
  tune-$(CONFIG_CPU_V6)		=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  tune-$(CONFIG_CPU_V6K)		=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
  
  # Evaluate tune cc-option calls now
  tune-y := $(tune-y)

  ifeq ($(CONFIG_AEABI),y)

  CFLAGS_ABI	:=-mabi=aapcs-linux -mfpu=vfp

  else

  CFLAGS_ABI	:=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)

  endif

  ifeq ($(CONFIG_ARM_UNWIND),y)
  CFLAGS_ABI	+=-funwind-tables
  endif

  ifeq ($(CONFIG_CC_IS_CLANG),y)
  CFLAGS_ABI	+= -meabi gnu
  endif

  # Accept old syntax despite ".syntax unified"
  AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)

  ifeq ($(CONFIG_THUMB2_KERNEL),y)

  CFLAGS_ISA	:=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)

  AFLAGS_ISA	:=$(CFLAGS_ISA) -Wa$(comma)-mthumb

  else

  CFLAGS_ISA	:=$(call cc-option,-marm,) $(AFLAGS_NOWARN)

  AFLAGS_ISA	:=$(CFLAGS_ISA)

  endif

  # Need -Uarm for gcc < 3.x

  KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
  KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float

  CHECKFLAGS	+= -D__arm__

  
  #Default value

  head-y		:= arch/arm/kernel/head$(MMUEXT).o

  
  # Text offset. This list is sorted numerically by address in order to
  # provide a means to avoid/resolve conflicts in multi-arch kernels.

  # Note: the 32kB below this value is reserved for use by the kernel
  # during boot, and this offset is critical to the functioning of
  # kexec-tools.

  textofs-y	:= 0x00008000

  # We don't want the htc bootloader to corrupt kernel during resume
  textofs-$(CONFIG_PM_H1940)      := 0x00108000

  # RTD1195 has Boot ROM at start of address space
  textofs-$(CONFIG_ARCH_REALTEK)  := 0x00108000

  # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory

  ifeq ($(CONFIG_ARCH_SA1100),y)
  textofs-$(CONFIG_SA1111) := 0x00208000

  endif

  textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000

  textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
  textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000

  textofs-$(CONFIG_ARCH_MESON) := 0x00208000

  textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000

  
  # Machine directory name.  This list is sorted alphanumerically
  # by CONFIG_* macro name.

  machine-$(CONFIG_ARCH_ACTIONS)		+= actions

  machine-$(CONFIG_ARCH_ALPINE)		+= alpine

  machine-$(CONFIG_ARCH_ARTPEC)		+= artpec

  machine-$(CONFIG_ARCH_ASPEED)           += aspeed

  machine-$(CONFIG_ARCH_AT91)		+= at91

  machine-$(CONFIG_ARCH_AXXIA)		+= axxia

  machine-$(CONFIG_ARCH_BCM)		+= bcm

  machine-$(CONFIG_ARCH_BERLIN)		+= berlin

  machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
  machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx
  machine-$(CONFIG_ARCH_DAVINCI)		+= davinci

  machine-$(CONFIG_ARCH_DIGICOLOR)	+= digicolor

  machine-$(CONFIG_ARCH_DOVE)		+= dove
  machine-$(CONFIG_ARCH_EBSA110)		+= ebsa110

  machine-$(CONFIG_ARCH_EFM32)		+= efm32

  machine-$(CONFIG_ARCH_EP93XX)		+= ep93xx

  machine-$(CONFIG_ARCH_EXYNOS)		+= exynos

  machine-$(CONFIG_ARCH_FOOTBRIDGE)	+= footbridge

  machine-$(CONFIG_ARCH_GEMINI)		+= gemini

  machine-$(CONFIG_ARCH_HIGHBANK)		+= highbank

  machine-$(CONFIG_ARCH_HISI)		+= hisi

  machine-$(CONFIG_ARCH_INTEGRATOR)	+= integrator

  machine-$(CONFIG_ARCH_IOP32X)		+= iop32x

  machine-$(CONFIG_ARCH_IXP4XX)		+= ixp4xx

  machine-$(CONFIG_ARCH_KEYSTONE)		+= keystone

  machine-$(CONFIG_ARCH_LPC18XX)		+= lpc18xx

  machine-$(CONFIG_ARCH_LPC32XX)		+= lpc32xx

  machine-$(CONFIG_ARCH_MESON)		+= meson

  machine-$(CONFIG_ARCH_MMP)		+= mmp

  machine-$(CONFIG_ARCH_MPS2)		+= vexpress

  machine-$(CONFIG_ARCH_MOXART)		+= moxart

  machine-$(CONFIG_ARCH_MV78XX0)		+= mv78xx0

  machine-$(CONFIG_ARCH_MVEBU)		+= mvebu

  machine-$(CONFIG_ARCH_MXC)		+= imx

  machine-$(CONFIG_ARCH_MEDIATEK)		+= mediatek

  machine-$(CONFIG_ARCH_MILBEAUT)		+= milbeaut

  machine-$(CONFIG_ARCH_MXS)		+= mxs

  machine-$(CONFIG_ARCH_MSTARV7)		+= mstar

  machine-$(CONFIG_ARCH_NOMADIK)		+= nomadik

  machine-$(CONFIG_ARCH_NPCM)		+= npcm

  machine-$(CONFIG_ARCH_NSPIRE)		+= nspire

  machine-$(CONFIG_ARCH_OXNAS)		+= oxnas

  machine-$(CONFIG_ARCH_OMAP1)		+= omap1
  machine-$(CONFIG_ARCH_OMAP2PLUS)	+= omap2
  machine-$(CONFIG_ARCH_ORION5X)		+= orion5x
  machine-$(CONFIG_ARCH_PICOXCELL)	+= picoxcell

  machine-$(CONFIG_ARCH_PXA)		+= pxa

  machine-$(CONFIG_ARCH_QCOM)		+= qcom

  machine-$(CONFIG_ARCH_RDA)		+= rda

  machine-$(CONFIG_ARCH_REALTEK)		+= realtek

  machine-$(CONFIG_ARCH_REALVIEW)		+= realview

  machine-$(CONFIG_ARCH_ROCKCHIP)		+= rockchip

  machine-$(CONFIG_ARCH_RPC)		+= rpc

  machine-$(CONFIG_PLAT_SAMSUNG)		+= s3c

  machine-$(CONFIG_ARCH_S5PV210)		+= s5pv210

  machine-$(CONFIG_ARCH_SA1100)		+= sa1100

  machine-$(CONFIG_ARCH_RENESAS)	 	+= shmobile

  machine-$(CONFIG_ARCH_SIRF)		+= prima2
  machine-$(CONFIG_ARCH_SOCFPGA)		+= socfpga
  machine-$(CONFIG_ARCH_STI)		+= sti

  machine-$(CONFIG_ARCH_STM32)		+= stm32

  machine-$(CONFIG_ARCH_SUNXI)		+= sunxi

  machine-$(CONFIG_ARCH_TANGO)		+= tango

  machine-$(CONFIG_ARCH_TEGRA)		+= tegra
  machine-$(CONFIG_ARCH_U300)		+= u300
  machine-$(CONFIG_ARCH_U8500)		+= ux500
  machine-$(CONFIG_ARCH_VERSATILE)	+= versatile
  machine-$(CONFIG_ARCH_VEXPRESS)		+= vexpress
  machine-$(CONFIG_ARCH_VT8500)		+= vt8500

  machine-$(CONFIG_ARCH_ZX)		+= zx

  machine-$(CONFIG_ARCH_ZYNQ)		+= zynq

  machine-$(CONFIG_PLAT_SPEAR)		+= spear

  
  # Platform directory name.  This list is sorted alphanumerically
  # by CONFIG_* macro name.

  plat-$(CONFIG_ARCH_OMAP)	+= omap

  plat-$(CONFIG_PLAT_ORION)	+= orion
  plat-$(CONFIG_PLAT_PXA)		+= pxa

  plat-$(CONFIG_PLAT_VERSATILE)	+= versatile

  
  ifeq ($(CONFIG_ARCH_EBSA110),y)
  # This is what happens if you forget the IOCS16 line.
  # PCMCIA cards stop working.
  CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
  export CFLAGS_3c589_cs.o
  endif

  # The byte offset of the kernel image in RAM from the start of RAM.
  TEXT_OFFSET := $(textofs-y)

  # The first directory contains additional information for the boot setup code

  ifneq ($(machine-y),)

  MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/

  else
  MACHINE  :=
  endif

  ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
  MACHINE  :=
  endif

  machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))

  platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))

  ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)

  ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)

  KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
  endif

  endif

  export	TEXT_OFFSET GZFLAGS MMUEXT

  core-y				+= arch/arm/

  # If we have a machine-specific directory, then include it in the build.

  core-y				+= $(machdirs) $(platdirs)

  # For cleaning
  core-				+= $(patsubst %,arch/arm/mach-%/, $(machine-))
  core-				+= $(patsubst %,arch/arm/plat-%/, $(plat-))

  drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/

  libs-y				:= arch/arm/lib/ $(libs-y)

  
  # Default target when executing plain make

  boot := arch/arm/boot

  ifeq ($(CONFIG_XIP_KERNEL),y)

  KBUILD_IMAGE := $(boot)/xipImage

  else

  KBUILD_IMAGE := $(boot)/zImage

  endif

  ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
  prepare: stack_protector_prepare
  stack_protector_prepare: prepare0

  	$(eval SSP_PLUGIN_CFLAGS := \

  		-fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell	\
  			awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
  				include/generated/asm-offsets.h)	\
  		-fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell	\
  			awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
  				include/generated/asm-offsets.h))

  	$(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
  	$(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))

  endif

  all:	$(notdir $(KBUILD_IMAGE))

  archheaders:
  	$(Q)$(MAKE) $(build)=arch/arm/tools uapi

  archprepare:

  	$(Q)$(MAKE) $(build)=arch/arm/tools kapi

  
  # Convert bzImage to zImage
  bzImage: zImage

  BOOT_TARGETS	= zImage Image xipImage bootpImage uImage
  INSTALL_TARGETS	= zinstall uinstall install
  
  PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)

  bootpImage uImage: zImage
  zImage: Image

  $(BOOT_TARGETS): vmlinux

  	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

  	@$(kecho) '  Kernel: $(boot)/$@ is ready'

  $(INSTALL_TARGETS):

  	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@

  PHONY += vdso_install
  vdso_install:
  ifeq ($(CONFIG_VDSO),y)
  	$(Q)$(MAKE) $(build)=arch/arm/vdso $@
  endif

  # We use MRPROPER_FILES and CLEAN_FILES now
  archclean:
  	$(Q)$(MAKE) $(clean)=$(boot)
  
  # My testing targets (bypasses dependencies)
  bp:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage

  
  define archhelp
    echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
    echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
    echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'

    echo  '  uImage        - U-Boot wrapped zImage'

    echo  '  bootpImage    - Combined zImage and initial RAM disk'

    echo  '                  (supply initrd image via make variable INITRD=<path>)'
    echo  '  install       - Install uncompressed kernel'
    echo  '  zinstall      - Install compressed kernel'

    echo  '  uinstall      - Install U-Boot wrapped compressed kernel'

    echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
    echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'

    echo  '                  install to $$(INSTALL_PATH) and run lilo'

    echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'

  endef