linux/arch/mips/Makefile
Maciej W. Rozycki 0859bdf1ac Revert MIPS: Loongson: Fix build error when make modules_install
Revert commit 531b3d1195 ("MIPS: Loongson: Fix build error when make
modules_install"), which made `-march=loongson2e', `-march=loongson2f',
and `-march=loongson3a' compilation options probed for even though GCC
has supported them since 4.4.0, 4.4.0, and 4.6.0 respectively, which is
below our current minimum requirement of 5.1, in an attempt to work
around for the `cc-option' `make' function being undefined with `make'
targets that do not use the compiler.  The workaround has now been made
obsolete, by querying the `need-compiler' variable instead so as to make
sure the compiler isn't called for non-build targets.

Verified with `fuloong2e_defconfig' and the `modules_install' target.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2023-07-25 10:42:01 +02:00

584 lines
20 KiB
Makefile

#
# 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)