arch/mips/Makefile - LeafOS-Devices/android_kernel_samsung_universal7904 - Gitiles

 #
 # 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) 1994, 95, 96, 2003 by Ralf Baechle
 # DECStation modifications by Paul M. Antoine, 1996
 # Copyright (C) 2002, 2003, 2004  Maciej W. Rozycki
 #
 # 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" cleaning up for this architecture.
 #

 KBUILD_DEFCONFIG := ip22_defconfig

 #
 # Select the object file format to substitute into the linker script.
 #
 ifdef CONFIG_CPU_LITTLE_ENDIAN
 32bit-tool-archpref	= mipsel
 64bit-tool-archpref	= mips64el
 32bit-bfd		= elf32-tradlittlemips
 64bit-bfd		= elf64-tradlittlemips
 32bit-emul		= elf32ltsmip
 64bit-emul		= elf64ltsmip
 else
 32bit-tool-archpref	= mips
 64bit-tool-archpref	= mips64
 32bit-bfd		= elf32-tradbigmips
 64bit-bfd		= elf64-tradbigmips
 32bit-emul		= elf32btsmip
 64bit-emul		= elf64btsmip
 endif

 ifdef CONFIG_32BIT
 tool-archpref		= $(32bit-tool-archpref)
 UTS_MACHINE		:= mips
 endif
 ifdef CONFIG_64BIT
 tool-archpref		= $(64bit-tool-archpref)
 UTS_MACHINE		:= mips64
 endif

 ifneq ($(SUBARCH),$(ARCH))
   ifeq ($(CROSS_COMPILE),)
     CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
   endif
 endif

 ifdef CONFIG_FUNCTION_GRAPH_TRACER
   ifndef KBUILD_MCOUNT_RA_ADDRESS
     ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
       cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
     endif
   endif
 endif
 cflags-y += $(call cc-option, -mno-check-zero-division)

 ifdef CONFIG_32BIT
 ld-emul			= $(32bit-emul)
 vmlinux-32		= vmlinux
 vmlinux-64		= vmlinux.64

 cflags-y		+= -mabi=32
 endif

 ifdef CONFIG_64BIT
 ld-emul			= $(64bit-emul)
 vmlinux-32		= vmlinux.32
 vmlinux-64		= vmlinux

 cflags-y		+= -mabi=64
 endif

 all-$(CONFIG_BOOT_ELF32)	:= $(vmlinux-32)
 all-$(CONFIG_BOOT_ELF64)	:= $(vmlinux-64)
 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz

 #
 # GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
 # code since it only slows down the whole thing.  At some point we might make
 # use of global pointer optimizations but their use of $28 conflicts with
 # the current pointer optimization.
 #
 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
 # machines may also.  Since BFD is incredibly buggy with respect to
 # crossformat linking we rely on the elf2ecoff tool for format conversion.
 #
 cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
 cflags-y			+= -msoft-float
 LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
 KBUILD_AFLAGS_MODULE		+= -mlong-calls
 KBUILD_CFLAGS_MODULE		+= -mlong-calls

 #
 # pass -msoft-float to GAS if it supports it.  However on newer binutils
 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
 # set ".set hardfloat" in all files which manipulate floating point registers.
 #
 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
 	cflags-y		+= -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
 endif

 cflags-y += -ffreestanding

 #
 # We explicitly add the endianness specifier if needed, this allows
 # to compile kernels with a toolchain for the other endianness. We
 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
 # when fed the toolchain default!
 #
 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
 # are used, so we kludge that here.  A bug has been filed at
 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
 #
 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
 cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))

 cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
 				   -fno-omit-frame-pointer
 #
 # CPU-dependent compiler/assembler options for optimization.
 #
 cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
 cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
 cflags-$(CONFIG_CPU_R6000)	+= -march=r6000 -Wa,--trap
 cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
 cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
 cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
 cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
 			-Wa,-mips32 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
 			-Wa,-mips32r2 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R6)	+= -march=mips32r6 -Wa,--trap -modd-spreg
 cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
 			-Wa,-mips64 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
 			-Wa,-mips64r2 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
 cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
 cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mdmx)
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mips3d)
 cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
 cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
 endif
 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
 cflags-$(CONFIG_CPU_BMIPS)	+= -march=mips32 -Wa,-mips32 -Wa,--trap
 #
 # binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a
 # as MIPS64 R1; older versions as just R1.  This leaves the possibility open
 # that GCC might generate R2 code for -march=loongson3a which then is rejected
 # by GAS.  The cc-option can't probe for this behaviour so -march=loongson3a
 # can't easily be used safely within the kbuild framework.
 #
 cflags-$(CONFIG_CPU_LOONGSON3)  +=					\
 	$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
 	-Wa,-mips64r2 -Wa,--trap

 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)	+= $(call cc-option,-mfix-r4000,)
 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)	+= $(call cc-option,-mfix-r4400,)
 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)	+= $(call cc-option,-mno-daddi,)

 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
 # similar directives in the kernel will spam the build logs with the following warnings:
 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
 # or
 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
 # been fixed properly.
 mips-cflags				:= $(cflags-y)
 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
 smartmips-ase				:= $(call cc-option-yn,$(mips-cflags) -msmartmips)
 cflags-$(smartmips-ase)			+= -msmartmips -Wa,--no-warn
 endif
 ifeq ($(CONFIG_CPU_MICROMIPS),y)
 micromips-ase				:= $(call cc-option-yn,$(mips-cflags) -mmicromips)
 cflags-$(micromips-ase)			+= -mmicromips
 endif
 ifeq ($(CONFIG_CPU_HAS_MSA),y)
 toolchain-msa				:= $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
 cflags-$(toolchain-msa)			+= -DTOOLCHAIN_SUPPORTS_MSA
 endif

 #
 # Firmware support
 #
 libs-$(CONFIG_FW_ARC)		+= arch/mips/fw/arc/
 libs-$(CONFIG_FW_CFE)		+= arch/mips/fw/cfe/
 libs-$(CONFIG_FW_SNIPROM)	+= arch/mips/fw/sni/
 libs-y				+= arch/mips/fw/lib/

 #
 # Kernel compression
 #
 ifdef SYS_SUPPORTS_ZBOOT
 COMPRESSION_FNAME		= vmlinuz
 else
 COMPRESSION_FNAME		= vmlinux
 endif

 #
 # Board-dependent options and extra files
 #
 include arch/mips/Kbuild.platforms

 ifdef CONFIG_PHYSICAL_START
 load-y					= $(CONFIG_PHYSICAL_START)
 endif
 entry-y				= 0x$(shell $(NM) vmlinux 2>/dev/null \
 					| grep "\bkernel_entry\b" | cut -f1 -d \ )

 cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
 drivers-$(CONFIG_PCI)		+= arch/mips/pci/

 #
 # Automatically detect the build format. By default we choose
 # the elf format according to the load address.
 # We can always force a build with a 64-bits symbol format by
 # passing 'KBUILD_SYM32=no' option to the make's command line.
 #
 ifdef CONFIG_64BIT
   ifndef KBUILD_SYM32
     ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
       KBUILD_SYM32 = y
     endif
   endif

   ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
     cflags-y += -msym32 -DKBUILD_64BIT_SYM32
   else
     ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
       $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
     endif
   endif
 endif

 KBUILD_AFLAGS	+= $(cflags-y)
 KBUILD_CFLAGS	+= $(cflags-y)
 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)

 bootvars-y	= VMLINUX_LOAD_ADDRESS=$(load-y) \
 		  VMLINUX_ENTRY_ADDRESS=$(entry-y) \
 		  PLATFORM="$(platform-y)"
 ifdef CONFIG_32BIT
 bootvars-y	+= ADDR_BITS=32
 endif
 ifdef CONFIG_64BIT
 bootvars-y	+= ADDR_BITS=64
 endif

 LDFLAGS			+= -m $(ld-emul)

 ifdef CONFIG_MIPS
 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
 	egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
 	sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
 ifdef CONFIG_64BIT
 CHECKFLAGS		+= -m64
 endif
 endif

 OBJCOPYFLAGS		+= --remove-section=.reginfo

 head-y := arch/mips/kernel/head.o

 libs-y			+= arch/mips/lib/
 libs-y			+= arch/mips/math-emu/

 # See arch/mips/Kbuild for content of core part of the kernel
 core-y += arch/mips/

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

 # suspend and hibernation support
 drivers-$(CONFIG_PM)	+= arch/mips/power/

 # boot image targets (arch/mips/boot/)
 boot-y			:= vmlinux.bin
 boot-y			+= vmlinux.ecoff
 boot-y			+= vmlinux.srec
 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
 boot-y			+= uImage
 boot-y			+= uImage.bin
 boot-y			+= uImage.bz2
 boot-y			+= uImage.gz
 boot-y			+= uImage.lzma
 boot-y			+= uImage.lzo
 endif
 boot-y			+= vmlinux.itb
 boot-y			+= vmlinux.gz.itb
 boot-y			+= vmlinux.bz2.itb
 boot-y			+= vmlinux.lzma.itb
 boot-y			+= vmlinux.lzo.itb

 # compressed boot image targets (arch/mips/boot/compressed/)
 bootz-y			:= vmlinuz
 bootz-y			+= vmlinuz.bin
 bootz-y			+= vmlinuz.ecoff
 bootz-y			+= vmlinuz.srec

 ifdef CONFIG_LASAT
 rom.bin rom.sw: vmlinux
 	$(Q)$(MAKE) $(build)=arch/mips/lasat/image \
 		$(bootvars-y) $@
 endif

 #
 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
 # convert to ECOFF using elf2ecoff.
 #
 quiet_cmd_32 = OBJCOPY $@
 	cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 vmlinux.32: vmlinux
 	$(call cmd,32)

 #
 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
 # ELF files from 32-bit files by conversion.
 #
 quiet_cmd_64 = OBJCOPY $@
 	cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
 vmlinux.64: vmlinux
 	$(call cmd,64)

 all:	$(all-y)

 # boot
 $(boot-y): $(vmlinux-32) FORCE
 	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
 		$(bootvars-y) arch/mips/boot/$@

 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 # boot/compressed
 $(bootz-y): $(vmlinux-32) FORCE
 	$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
 		$(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
 else
 vmlinuz: FORCE
 	@echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
 	/bin/false
 endif


 CLEAN_FILES += vmlinux.32 vmlinux.64

 # device-trees
 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/

 %.dtb %.dtb.S %.dtb.o: | scripts
 	$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@

 PHONY += dtbs
 dtbs: scripts
 	$(Q)$(MAKE) $(build)=arch/mips/boot/dts

 PHONY += dtbs_install
 dtbs_install:
 	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts

 archprepare:
 ifdef CONFIG_MIPS32_N32
 	@echo '  Checking missing-syscalls for N32'
 	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
 endif
 ifdef CONFIG_MIPS32_O32
 	@echo '  Checking missing-syscalls for O32'
 	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
 endif

 install:
 	$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 	$(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
 endif
 	$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
 	$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)

 archclean:
 	$(Q)$(MAKE) $(clean)=arch/mips/boot
 	$(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
 	$(Q)$(MAKE) $(clean)=arch/mips/lasat

 define archhelp
 	echo '  install              - install kernel into $(INSTALL_PATH)'
 	echo '  vmlinux.ecoff        - ECOFF boot image'
 	echo '  vmlinux.bin          - Raw binary boot image'
 	echo '  vmlinux.srec         - SREC boot image'
 	echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
 	echo '  vmlinuz              - Compressed boot(zboot) image'
 	echo '  vmlinuz.ecoff        - ECOFF zboot image'
 	echo '  vmlinuz.bin          - Raw binary zboot image'
 	echo '  vmlinuz.srec         - SREC zboot image'
 	echo '  uImage               - U-Boot image'
 	echo '  uImage.bin           - U-Boot image (uncompressed)'
 	echo '  uImage.bz2           - U-Boot image (bz2)'
 	echo '  uImage.gz            - U-Boot image (gzip)'
 	echo '  uImage.lzma          - U-Boot image (lzma)'
 	echo '  uImage.lzo           - U-Boot image (lzo)'
 	echo '  dtbs                 - Device-tree blobs for enabled boards'
 	echo '  dtbs_install         - Install dtbs to $(INSTALL_DTBS_PATH)'
 	echo
 	echo '  These will be default as appropriate for a configured platform.'
 	echo
 	echo '  If you are targeting a system supported by generic kernels you may'
 	echo '  configure the kernel for a given architecture target like so:'
 	echo
 	echo '  {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
 	echo
 	echo '  Otherwise, the following default configurations are available:'
 endef

 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
 generic_defconfigs :=

 #
 # If the user generates a generic kernel configuration without specifying a
 # list of boards to include the config fragments for, default to including all
 # available board config fragments.
 #
 ifeq ($(BOARDS),)
 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
 endif

 #
 # Generic kernel configurations which merge generic_defconfig with the
 # appropriate config fragments from arch/mips/configs/generic/, resulting in
 # the ability to easily configure the kernel for a given architecture,
 # endianness & set of boards without duplicating the needed configuration in
 # hundreds of defconfig files.
 #
 define gen_generic_defconfigs
 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
 generic_defconfigs += $$(target)
 $$(target): $(generic_config_dir)/$(bits)$(rev).config
 $$(target): $(generic_config_dir)/$(endian).config
 )))
 endef

 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))

 .PHONY: $(generic_defconfigs)
 $(generic_defconfigs):
 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
 		-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
 		$(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
 	$(Q)$(MAKE) olddefconfig

 #
 # Prevent generic merge_config rules attempting to merge single fragments
 #
 $(generic_config_dir)/%.config: ;
	#
	# 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) 1994, 95, 96, 2003 by Ralf Baechle
	# DECStation modifications by Paul M. Antoine, 1996
	# Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
	#
	# 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" cleaning up for this architecture.
	#

	KBUILD_DEFCONFIG := ip22_defconfig

	#
	# Select the object file format to substitute into the linker script.
	#
	ifdef CONFIG_CPU_LITTLE_ENDIAN
	32bit-tool-archpref = mipsel
	64bit-tool-archpref = mips64el
	32bit-bfd = elf32-tradlittlemips
	64bit-bfd = elf64-tradlittlemips
	32bit-emul = elf32ltsmip
	64bit-emul = elf64ltsmip
	else
	32bit-tool-archpref = mips
	64bit-tool-archpref = mips64
	32bit-bfd = elf32-tradbigmips
	64bit-bfd = elf64-tradbigmips
	32bit-emul = elf32btsmip
	64bit-emul = elf64btsmip
	endif

	ifdef CONFIG_32BIT
	tool-archpref = $(32bit-tool-archpref)
	UTS_MACHINE := mips
	endif
	ifdef CONFIG_64BIT
	tool-archpref = $(64bit-tool-archpref)
	UTS_MACHINE := mips64
	endif

	ifneq ($(SUBARCH),$(ARCH))
	ifeq ($(CROSS_COMPILE),)
	CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
	endif
	endif

	ifdef CONFIG_FUNCTION_GRAPH_TRACER
	ifndef KBUILD_MCOUNT_RA_ADDRESS
	ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
	cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
	endif
	endif
	endif
	cflags-y += $(call cc-option, -mno-check-zero-division)

	ifdef CONFIG_32BIT
	ld-emul = $(32bit-emul)
	vmlinux-32 = vmlinux
	vmlinux-64 = vmlinux.64

	cflags-y += -mabi=32
	endif

	ifdef CONFIG_64BIT
	ld-emul = $(64bit-emul)
	vmlinux-32 = vmlinux.32
	vmlinux-64 = vmlinux

	cflags-y += -mabi=64
	endif

	all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
	all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
	all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz

	#
	# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
	# code since it only slows down the whole thing. At some point we might make
	# use of global pointer optimizations but their use of $28 conflicts with
	# the current pointer optimization.
	#
	# The DECStation requires an ECOFF kernel for remote booting, other MIPS
	# machines may also. Since BFD is incredibly buggy with respect to
	# crossformat linking we rely on the elf2ecoff tool for format conversion.
	#
	cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
	cflags-y += -msoft-float
	LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
	KBUILD_AFLAGS_MODULE += -mlong-calls
	KBUILD_CFLAGS_MODULE += -mlong-calls

	#
	# pass -msoft-float to GAS if it supports it. However on newer binutils
	# (specifically newer than 2.24.51.20140728) we then also need to explicitly
	# set ".set hardfloat" in all files which manipulate floating point registers.
	#
	ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
	cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
	endif

	cflags-y += -ffreestanding

	#
	# We explicitly add the endianness specifier if needed, this allows
	# to compile kernels with a toolchain for the other endianness. We
	# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
	# when fed the toolchain default!
	#
	# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
	# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
	# are used, so we kludge that here. A bug has been filed at
	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
	#
	undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
	undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
	predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
	predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
	cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine \|grep -q 'mips.el-.' && echo -EB $(undef-all) $(predef-be))
	cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine \|grep -q 'mips.el-.' \|\| echo -EL $(undef-all) $(predef-le))

	cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
	-fno-omit-frame-pointer
	#
	# CPU-dependent compiler/assembler options for optimization.
	#
	cflags-$(CONFIG_CPU_R3000) += -march=r3000
	cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
	cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
	cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
	cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
	cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
	cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
	cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
	-Wa,-mips32 -Wa,--trap
	cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
	-Wa,-mips32r2 -Wa,--trap
	cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
	cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
	-Wa,-mips64 -Wa,--trap
	cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
	-Wa,-mips64r2 -Wa,--trap
	cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
	cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
	cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
	cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
	cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
	cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
	-Wa,--trap
	cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
	ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
	cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
	endif
	cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
	cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
	#
	# binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a
	# as MIPS64 R1; older versions as just R1. This leaves the possibility open
	# that GCC might generate R2 code for -march=loongson3a which then is rejected
	# by GAS. The cc-option can't probe for this behaviour so -march=loongson3a
	# can't easily be used safely within the kbuild framework.
	#
	cflags-$(CONFIG_CPU_LOONGSON3) += \
	$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
	-Wa,-mips64r2 -Wa,--trap

	cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
	cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
	cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)

	# For smartmips configurations, there are hundreds of warnings due to ISA overrides
	# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
	# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
	# similar directives in the kernel will spam the build logs with the following warnings:
	# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
	# or
	# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
	# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
	# been fixed properly.
	mips-cflags := $(cflags-y)
	ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
	smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
	cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
	endif
	ifeq ($(CONFIG_CPU_MICROMIPS),y)
	micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
	cflags-$(micromips-ase) += -mmicromips
	endif
	ifeq ($(CONFIG_CPU_HAS_MSA),y)
	toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
	cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
	endif

	#
	# Firmware support
	#
	libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
	libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
	libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
	libs-y += arch/mips/fw/lib/

	#
	# Kernel compression
	#
	ifdef SYS_SUPPORTS_ZBOOT
	COMPRESSION_FNAME = vmlinuz
	else
	COMPRESSION_FNAME = vmlinux
	endif

	#
	# Board-dependent options and extra files
	#
	include arch/mips/Kbuild.platforms

	ifdef CONFIG_PHYSICAL_START
	load-y = $(CONFIG_PHYSICAL_START)
	endif
	entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
	\| grep "\bkernel_entry\b" \| cut -f1 -d \ )

	cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
	drivers-$(CONFIG_PCI) += arch/mips/pci/

	#
	# Automatically detect the build format. By default we choose
	# the elf format according to the load address.
	# We can always force a build with a 64-bits symbol format by
	# passing 'KBUILD_SYM32=no' option to the make's command line.
	#
	ifdef CONFIG_64BIT
	ifndef KBUILD_SYM32
	ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
	KBUILD_SYM32 = y
	endif
	endif

	ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
	cflags-y += -msym32 -DKBUILD_64BIT_SYM32
	else
	ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
	$(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
	endif
	endif
	endif

	KBUILD_AFLAGS += $(cflags-y)
	KBUILD_CFLAGS += $(cflags-y)
	KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
	KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)

	bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
	VMLINUX_ENTRY_ADDRESS=$(entry-y) \
	PLATFORM="$(platform-y)"
	ifdef CONFIG_32BIT
	bootvars-y += ADDR_BITS=32
	endif
	ifdef CONFIG_64BIT
	bootvars-y += ADDR_BITS=64
	endif

	LDFLAGS += -m $(ld-emul)

	ifdef CONFIG_MIPS
	CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null \| \
	egrep -vw '__GNUC_(\|MINOR_\|PATCHLEVEL_)_' \| \
	sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
	ifdef CONFIG_64BIT
	CHECKFLAGS += -m64
	endif
	endif

	OBJCOPYFLAGS += --remove-section=.reginfo

	head-y := arch/mips/kernel/head.o

	libs-y += arch/mips/lib/
	libs-y += arch/mips/math-emu/

	# See arch/mips/Kbuild for content of core part of the kernel
	core-y += arch/mips/

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

	# suspend and hibernation support
	drivers-$(CONFIG_PM) += arch/mips/power/

	# boot image targets (arch/mips/boot/)
	boot-y := vmlinux.bin
	boot-y += vmlinux.ecoff
	boot-y += vmlinux.srec
	ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
	boot-y += uImage
	boot-y += uImage.bin
	boot-y += uImage.bz2
	boot-y += uImage.gz
	boot-y += uImage.lzma
	boot-y += uImage.lzo
	endif
	boot-y += vmlinux.itb
	boot-y += vmlinux.gz.itb
	boot-y += vmlinux.bz2.itb
	boot-y += vmlinux.lzma.itb
	boot-y += vmlinux.lzo.itb

	# compressed boot image targets (arch/mips/boot/compressed/)
	bootz-y := vmlinuz
	bootz-y += vmlinuz.bin
	bootz-y += vmlinuz.ecoff
	bootz-y += vmlinuz.srec

	ifdef CONFIG_LASAT
	rom.bin rom.sw: vmlinux
	$(Q)$(MAKE) $(build)=arch/mips/lasat/image \
	$(bootvars-y) $@
	endif

	#
	# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
	# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
	# convert to ECOFF using elf2ecoff.
	#
	quiet_cmd_32 = OBJCOPY $@
	cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
	vmlinux.32: vmlinux
	$(call cmd,32)

	#
	# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
	# ELF files from 32-bit files by conversion.
	#
	quiet_cmd_64 = OBJCOPY $@
	cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
	vmlinux.64: vmlinux
	$(call cmd,64)

	all: $(all-y)

	# boot
	$(boot-y): $(vmlinux-32) FORCE
	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
	$(bootvars-y) arch/mips/boot/$@

	ifdef CONFIG_SYS_SUPPORTS_ZBOOT
	# boot/compressed
	$(bootz-y): $(vmlinux-32) FORCE
	$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
	$(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
	else
	vmlinuz: FORCE
	@echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
	/bin/false
	endif


	CLEAN_FILES += vmlinux.32 vmlinux.64

	# device-trees
	core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/

	%.dtb %.dtb.S %.dtb.o: \| scripts
	$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@

	PHONY += dtbs
	dtbs: scripts
	$(Q)$(MAKE) $(build)=arch/mips/boot/dts

	PHONY += dtbs_install
	dtbs_install:
	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts

	archprepare:
	ifdef CONFIG_MIPS32_N32
	@echo ' Checking missing-syscalls for N32'
	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
	endif
	ifdef CONFIG_MIPS32_O32
	@echo ' Checking missing-syscalls for O32'
	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
	endif

	install:
	$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
	ifdef CONFIG_SYS_SUPPORTS_ZBOOT
	$(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
	endif
	$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
	$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)

	archclean:
	$(Q)$(MAKE) $(clean)=arch/mips/boot
	$(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
	$(Q)$(MAKE) $(clean)=arch/mips/lasat

	define archhelp
	echo ' install - install kernel into $(INSTALL_PATH)'
	echo ' vmlinux.ecoff - ECOFF boot image'
	echo ' vmlinux.bin - Raw binary boot image'
	echo ' vmlinux.srec - SREC boot image'
	echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
	echo ' vmlinuz - Compressed boot(zboot) image'
	echo ' vmlinuz.ecoff - ECOFF zboot image'
	echo ' vmlinuz.bin - Raw binary zboot image'
	echo ' vmlinuz.srec - SREC zboot image'
	echo ' uImage - U-Boot image'
	echo ' uImage.bin - U-Boot image (uncompressed)'
	echo ' uImage.bz2 - U-Boot image (bz2)'
	echo ' uImage.gz - U-Boot image (gzip)'
	echo ' uImage.lzma - U-Boot image (lzma)'
	echo ' uImage.lzo - U-Boot image (lzo)'
	echo ' dtbs - Device-tree blobs for enabled boards'
	echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
	echo
	echo ' These will be default as appropriate for a configured platform.'
	echo
	echo ' If you are targeting a system supported by generic kernels you may'
	echo ' configure the kernel for a given architecture target like so:'
	echo
	echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
	echo
	echo ' Otherwise, the following default configurations are available:'
	endef

	generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
	generic_defconfigs :=

	#
	# If the user generates a generic kernel configuration without specifying a
	# list of boards to include the config fragments for, default to including all
	# available board config fragments.
	#
	ifeq ($(BOARDS),)
	BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
	endif

	#
	# Generic kernel configurations which merge generic_defconfig with the
	# appropriate config fragments from arch/mips/configs/generic/, resulting in
	# the ability to easily configure the kernel for a given architecture,
	# endianness & set of boards without duplicating the needed configuration in
	# hundreds of defconfig files.
	#
	define gen_generic_defconfigs
	$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
	target := $(bits)$(rev)$(filter el,$(endian))_defconfig
	generic_defconfigs += $$(target)
	$$(target): $(generic_config_dir)/$(bits)$(rev).config
	$$(target): $(generic_config_dir)/$(endian).config
	)))
	endef

	$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
	$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))

	.PHONY: $(generic_defconfigs)
	$(generic_defconfigs):
	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
	-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
	$(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
	$(Q)$(MAKE) olddefconfig

	#
	# Prevent generic merge_config rules attempting to merge single fragments
	#
	$(generic_config_dir)/%.config: ;