arch/mips/Makefile - arm/linux - Git at Google


            
            #

            
            # 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.

            
            #


            archscripts: scripts_basic

            
            	$(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs


            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


            ifeq ($(CONFIG_RELOCATABLE),y)

            
            LDFLAGS_vmlinux			+= --emit-relocs

            
            endif


            #

            
            # 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

            
            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


            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

            
            toolchain-virt				:= $(call cc-option-yn,$(mips-cflags) -mvirt)

            
            cflags-$(toolchain-virt)		+= -DTOOLCHAIN_SUPPORTS_VIRT


            #

            
            # 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


            CMD_RELOCS = arch/mips/boot/tools/relocs

            
            quiet_cmd_relocs = RELOCS  $<

            
                  cmd_relocs = $(CMD_RELOCS) $<


            #

            
            # 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

            
            ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy)

            
            # Currently, objcopy fails to handle the relocations in the elf64

            
            # So the relocs tool must be run here to remove them first

            
            	$(call cmd,relocs)

            
            endif

            
            	$(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

            
            ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy)

            
            	$(call cmd,relocs)

            
            endif

            
            	$(Q)$(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/boot/tools

            
            	$(Q)$(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: ;


            #

            
            # Legacy defconfig compatibility - these targets used to be real defconfigs but

            
            # now that the boards have been converted to use the generic kernel they are

            
            # wrappers around the generic rules above.

            
            #

            
            .PHONY: sead3_defconfig

            
            sead3_defconfig:

            
            	$(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3


            .PHONY: sead3micro_defconfig

            
            sead3micro_defconfig:

            
            	$(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3
	#
	# 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.
	#

	archscripts: scripts_basic
	$(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs

	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

	ifeq ($(CONFIG_RELOCATABLE),y)
	LDFLAGS_vmlinux += --emit-relocs
	endif

	#
	# 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
	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

	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
	toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
	cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT

	#
	# 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

	CMD_RELOCS = arch/mips/boot/tools/relocs
	quiet_cmd_relocs = RELOCS $<
	cmd_relocs = $(CMD_RELOCS) $<

	#
	# 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) $< $@
	vmlinux.32: vmlinux
	ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy)
	# Currently, objcopy fails to handle the relocations in the elf64
	# So the relocs tool must be run here to remove them first
	$(call cmd,relocs)
	endif
	$(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): $(vmlinux-32) FORCE
	ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy)
	$(call cmd,relocs)
	endif
	$(Q)$(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/boot/tools
	$(Q)$(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: ;

	#
	# Legacy defconfig compatibility - these targets used to be real defconfigs but
	# now that the boards have been converted to use the generic kernel they are
	# wrappers around the generic rules above.
	#
	.PHONY: sead3_defconfig
	sead3_defconfig:
	$(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3

	.PHONY: sead3micro_defconfig
	sead3micro_defconfig:
	$(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3