| # |
| # 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) += $(call cc-option,-march=r3000,-march=mips1) |
| cflags-$(CONFIG_CPU_R4300) += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap |
| cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap |
| cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap |
| cflags-$(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) += $(call cc-option,-march=p5600,-march=mips32r5) \ |
| -Wa,--trap -modd-spreg |
| cflags-$(CONFIG_CPU_R5000) += $(call cc-option,-march=r5000,-march=mips4) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=mips4) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=mips4) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=mips4) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=mips64) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) |
| cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) |
| cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=mips4) \ |
| -Wa,--trap |
| cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap |
| cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 |
| cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,--trap |
| |
| cflags-$(CONFIG_CPU_LOONGSON2E) += \ |
| $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap |
| cflags-$(CONFIG_CPU_LOONGSON2F) += \ |
| $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap |
| # Some -march= flags enable MMI instructions, and GCC complains about that |
| # support being enabled alongside -msoft-float. Thus explicitly disable MMI. |
| cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi) |
| cflags-$(CONFIG_CPU_LOONGSON64) += \ |
| $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap |
| cflags-$(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 = $(call cc-option-yn, -msym32) |
| endif |
| endif |
| |
| ifeq ($(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) |
