diff options
Diffstat (limited to 'arch/mips/Makefile')
| -rw-r--r-- | arch/mips/Makefile | 583 |
1 files changed, 583 insertions, 0 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile new file mode 100644 index 0000000000..f49807e1f1 --- /dev/null +++ b/arch/mips/Makefile @@ -0,0 +1,583 @@ +# +# 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) |