#
# 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.
#
archscripts: scripts_basic
$(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
$(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
endif
$(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
KBUILD_DEFCONFIG := 32r2el_defconfig
KBUILD_DTBS := dtbs
#
# 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 = $(64bit-tool-archpref)
UTS_MACHINE := mips64
endif
ifdef cross_compiling
ifeq ($(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 $28 conflicts with
# the current pointer optimization.
#
# The DECStation requires an ECOFF kernel for remote booting, other MIPS
# machines may also. Since BFD is incredibly buggy with respect to
# crossformat linking we rely on the elf2ecoff tool for format conversion.
#
cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
cflags-y += -msoft-float -Wa,-msoft-float
LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
KBUILD_AFLAGS_MODULE += -mlong-calls
KBUILD_CFLAGS_MODULE += -mlong-calls
ifeq ($(CONFIG_RELOCATABLE),y)
LDFLAGS_vmlinux += --emit-relocs
endif
cflags-y += -ffreestanding
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
-fno-omit-frame-pointer
# Some distribution-specific toolchains might pass the -fstack-check
# option during the build, which adds a simple stack-probe at the beginning
# of every function. This stack probe is to ensure that there is enough
# stack space, else a SEGV is generated. This is not desirable for MIPS
# as kernel stacks are small, placed in unmapped virtual memory, and do not
# grow when overflowed. Especially on SGI IP27 platforms, this check will
# lead to a NULL pointer dereference in _raw_spin_lock_irq.
#
# In disassembly, this stack probe appears at the top of a function as:
# sd zero,<offset>(sp)
# Where <offset> is a negative value.
#
cflags-y += -fno-stack-check
# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
# for a description).
#
# We disable this in order to prevent the assembler meddling with the
# instruction that labels refer to, ie. if we label an ll instruction:
#
# 1: ll v0, 0(a0)
#
# ...then with the assembler fix applied the label may actually point at a sync
# instruction inserted by the assembler, and if we were using the label in an
# exception table the table would no longer contain the address of the ll
# instruction.
#
# Avoid this by explicitly disabling that assembler behaviour.
#
cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
#
# CPU-dependent compiler/assembler options for optimization.
#
cflags-$(CONFIG_CPU_R3000) += -march=r3000
cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
cflags-$(CONFIG_CPU_R5000) += -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_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_LOONGSON2E) += -march=loongson2e -Wa,--trap
cflags-$(CONFIG_CPU_LOONGSON2F) += -march=loongson2f -Wa,--trap
# Some -march= flags enable MMI instructions, and GCC complains about that
# support being enabled alongside -msoft-float. Thus explicitly disable MMI.
cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
ifdef CONFIG_CPU_LOONGSON64
cflags-$(CONFIG_CPU_LOONGSON64) += -Wa,--trap
cflags-$(CONFIG_CC_IS_GCC) += -march=loongson3a
cflags-$(CONFIG_CC_IS_CLANG) += -march=mips64r2
endif
cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
endif
#
# Some versions of binutils, not currently mainline as of 2019/02/04, support
# an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
# to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
# description).
#
# We disable this in order to prevent the assembler meddling with the
# instruction that labels refer to, ie. if we label an ll instruction:
#
# 1: ll v0, 0(a0)
#
# ...then with the assembler fix applied the label may actually point at a sync
# instruction inserted by the assembler, and if we were using the label in an
# exception table the table would no longer contain the address of the ll
# instruction.
#
# Avoid this by explicitly disabling that assembler behaviour. If upstream
# binutils does not merge support for the flag then we can revisit & remove
# this later - for now it ensures vendor toolchains don't cause problems.
#
cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
# 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
# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
# only warns
xpa-cflags-y := $(mips-cflags)
xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
#
# 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 CONFIG_SYS_SUPPORTS_ZBOOT
COMPRESSION_FNAME = vmlinuz
else
COMPRESSION_FNAME = vmlinux
endif
#
# Board-dependent options and extra files
#
include $(srctree)/arch/mips/Kbuild.platforms
ifdef CONFIG_PHYSICAL_START
load-y = $(CONFIG_PHYSICAL_START)
endif
entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
cflags-y += -I$(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), y)
cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
else
ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
$(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
endif
endif
endif
# When linking a 32-bit executable the LLVM linker cannot cope with a
# 32-bit load address that has been sign-extended to 64 bits. Simply
# remove the upper 32 bits then, as it is safe to do so with other
# linkers.
ifdef CONFIG_64BIT
load-ld = $(load-y)
else
load-ld = $(subst 0xffffffff,0x,$(load-y))
endif
KBUILD_AFLAGS += $(cflags-y)
KBUILD_CFLAGS += $(cflags-y)
KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
LINKER_LOAD_ADDRESS=$(load-ld) \
VMLINUX_ENTRY_ADDRESS=$(entry-y) \
PLATFORM="$(platform-y)" \
ITS_INPUTS="$(its-y)"
ifdef CONFIG_32BIT
bootvars-y += ADDR_BITS=32
endif
ifdef CONFIG_64BIT
bootvars-y += ADDR_BITS=64
endif
# This is required to get dwarf unwinding tables into .debug_frame
# instead of .eh_frame so we don't discard them.
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_LDFLAGS += -m $(ld-emul)
ifdef need-compiler
CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
endif
OBJCOPYFLAGS += --remove-section=.reginfo
libs-y += arch/mips/lib/
libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
drivers-y += arch/mips/crypto/
# 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
boot-y += uImage
boot-y += uImage.bin
boot-y += uImage.bz2
boot-y += uImage.gz
boot-y += uImage.lzma
boot-y += uImage.lzo
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
bootz-y += uzImage.bin
bootz-y += vmlinuz.itb
#
# 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) $(KBUILD_DTBS)
# 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) arch/mips/boot/$@
else
vmlinuz: FORCE
@echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
/bin/false
endif
CLEAN_FILES += vmlinux.32 vmlinux.64
# device-trees
core-y += arch/mips/boot/dts/
archprepare:
ifdef CONFIG_MIPS32_N32
@$(kecho) ' Checking missing-syscalls for N32'
$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
endif
ifdef CONFIG_MIPS32_O32
@$(kecho) ' 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)
archheaders:
$(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
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 ' uzImage.bin - U-Boot image (self-extracting)'
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 ' Where BOARDS is some subset of the following:'
for board in $(sort $(BOARDS)); do echo " $${board}"; done
echo
echo ' Specifically the following generic default configurations are'
echo ' supported:'
echo
$(foreach cfg,$(generic_defconfigs),
printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
echo
echo ' The following legacy default configurations have been converted to'
echo ' generic and can still be used:'
echo
$(foreach cfg,$(sort $(legacy_defconfigs)),
printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
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
$$(target): $(generic_config_dir)/$(endian).config
)))
endef
$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
define describe_generic_defconfig
$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
endef
.PHONY: $(generic_defconfigs)
$(generic_defconfigs):
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
grep -Ev '^#'
$(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
$(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
$(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
"$(origin BOARDS)" $(BOARDS)
$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
#
# Prevent generic merge_config rules attempting to merge single fragments
#
$(generic_config_dir)/%.config: ;
#
# Prevent direct use of generic_defconfig, which is intended to be used as the
# basis of the various ISA-specific targets generated above.
#
.PHONY: generic_defconfig
generic_defconfig:
$(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
$(Q)echo "used via an ISA-specific target from the following list:"
$(Q)echo
$(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
$(Q)echo
$(Q)false
#
# 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.
#
legacy_defconfigs += ocelot_defconfig
ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
legacy_defconfigs += sead3_defconfig
sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
legacy_defconfigs += sead3micro_defconfig
sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
legacy_defconfigs += xilfpga_defconfig
xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
legacy_defconfigs += pistachio_defconfig
pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
.PHONY: $(legacy_defconfigs)
$(legacy_defconfigs):
$(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)