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#
# 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) 2001 - 2005  Tensilica Inc.
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# Copyright (C) 2014 Cadence Design Systems Inc.
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#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture

# Core configuration.
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# (Use VAR=<xtensa_config> to use another default compiler.)
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variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME))
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VARIANT = $(variant-y)
export VARIANT
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# Test for cross compiling

ifneq ($(VARIANT),)
  COMPILE_ARCH = $(shell uname -m)

  ifneq ($(COMPILE_ARCH), xtensa)
    ifndef CROSS_COMPILE
      CROSS_COMPILE = xtensa_$(VARIANT)-
    endif
  endif
endif

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# Platform configuration

platform-$(CONFIG_XTENSA_PLATFORM_XT2000)	:= xt2000
platform-$(CONFIG_XTENSA_PLATFORM_ISS)		:= iss
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platform-$(CONFIG_XTENSA_PLATFORM_XTFPGA)	:= xtfpga
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PLATFORM = $(platform-y)
export PLATFORM

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# temporarily until string.h is fixed
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KBUILD_CFLAGS += -ffreestanding -D__linux__
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KBUILD_CFLAGS += -pipe -mlongcalls
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KBUILD_CFLAGS += $(call cc-option,-mforce-no-pic,)

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ifneq ($(CONFIG_LD_NO_RELAX),)
LDFLAGS := --no-relax
endif

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ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
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CHECKFLAGS += -D__XTENSA_EB__
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KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
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endif
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ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
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CHECKFLAGS += -D__XTENSA_EL__
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KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
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endif

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vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))

ifeq ($(KBUILD_SRC),)
KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(vardirs) $(plfdirs))
else
KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(vardirs) $(plfdirs))
endif

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KBUILD_DEFCONFIG := iss_defconfig
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# Only build variant and/or platform if it includes a Makefile

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buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)
buildplf := $(shell test -e $(srctree)/arch/xtensa/platforms/$(PLATFORM)/Makefile && echo arch/xtensa/platforms/$(PLATFORM)/)
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# Find libgcc.a
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LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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head-y		:= arch/xtensa/kernel/head.o
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core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
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core-y		+= $(buildvar) $(buildplf)

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libs-y		+= arch/xtensa/lib/ $(LIBGCC)
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drivers-$(CONFIG_OPROFILE)	+= arch/xtensa/oprofile/
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ifneq ($(CONFIG_BUILTIN_DTB),"")
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core-$(CONFIG_OF) += arch/xtensa/boot/dts/
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endif

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boot		:= arch/xtensa/boot

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all: zImage

bzImage : zImage

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zImage: vmlinux
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	$(Q)$(MAKE) $(build)=$(boot) $@

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

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define archhelp
  @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
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  @echo '  dtbs        - Build device tree blobs for enabled boards'
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endef