#
# 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

# Ensure linker flags are correct
LDFLAGS		:=

LDFLAGS_vmlinux	:=-p --no-undefined -X
ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
LDFLAGS_vmlinux	+= --be8
endif
LDFLAGS_vmlinux += --gc-sections

OBJCOPYFLAGS	:=-O binary -R .comment -S
GZFLAGS		:=-9
#KBUILD_CFLAGS	+=-pipe

ifndef CONFIG_FUNCTION_TRACER
KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections
endif

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

# Do not use arch/arm/defconfig - it's always outdated.
# Select a platform tht is kept up-to-date
KBUILD_DEFCONFIG := arm_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 -mapcs -mno-sched-prolog
endif

ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
KBUILD_CFLAGS	+=-fstack-protector
endif

ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
KBUILD_CPPFLAGS	+= -mbig-endian
AS		+= -EB
LD		+= -EB
else
KBUILD_CPPFLAGS	+= -mlittle-endian
AS		+= -EL
LD		+= -EL
endif

comma = ,

# 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_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=armv3

# 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)

ifeq ($(CONFIG_AEABI),y)
CFLAGS_ABI	:=-mabi=aapcs-linux -mno-thumb-interwork
else
CFLAGS_ABI	:=$(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 ($(CONFIG_THUMB2_KERNEL),y)
AFLAGS_AUTOIT	:=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
CFLAGS_ISA	:=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
AFLAGS_ISA	:=$(CFLAGS_ISA) -Wa$(comma)-mthumb
# Work around buggy relocation from gas if requested:
ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
CFLAGS_MODULE	+=-fno-optimize-sibling-calls
endif
else
CFLAGS_ISA	:=$(call cc-option,-marm,)
AFLAGS_ISA	:=$(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
textofs-y	:= 0x00008000

#Board Makefile
include arch/arm/bsp/Makefile

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

export	TEXT_OFFSET GZFLAGS MMUEXT

# Do we have FASTFPE?
FASTFPE		:=arch/arm/fastfpe
ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
FASTFPE_OBJ	:=$(FASTFPE)/
endif

core-$(CONFIG_FPE_NWFPE)	+= arch/arm/nwfpe/
core-$(CONFIG_FPE_FASTFPE)	+= $(FASTFPE_OBJ)
core-$(CONFIG_VFP)		+= arch/arm/vfp/
core-$(CONFIG_XEN)		+= arch/arm/xen/
core-$(CONFIG_KVM_ARM_HOST) 	+= arch/arm/kvm/

# If we have a machine-specific directory, then include it in the build.
core-y				+= arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
core-y				+= arch/arm/net/
core-y				+= arch/arm/crypto/
core-y				+= $(machdirs) $(platdirs)

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

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

# Default target when executing plain make
ifeq ($(CONFIG_XIP_KERNEL),y)
KBUILD_IMAGE := xipImage
else
KBUILD_IMAGE := zImage
endif

# Build the DT binary blobs if we have OF configured
ifeq ($(CONFIG_USE_OF),y)
KBUILD_DTBS := dtbs
endif

all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)

boot := arch/arm/boot

archprepare:
	$(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h

# Convert bzImage to zImage
bzImage: zImage

zImage Image xipImage bootpImage uImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

zinstall uinstall install: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@

%.dtb: scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@

dtbs: scripts
	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs

# 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
i zi:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@


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/$(ARCH)/boot/xipImage)'
  echo  '  uImage        - U-Boot wrapped zImage'
  echo  '  bootpImage    - Combined zImage and initial RAM disk'
  echo  '                  (supply initrd image via make variable INITRD=<path>)'
  echo  '* dtbs          - Build device tree blobs for enabled boards'
  echo  '  install       - Install uncompressed kernel'
  echo  '  zinstall      - Install compressed kernel'
  echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
  echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
  echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
  echo  '                  install to $$(INSTALL_PATH) and run lilo'
endef
