1# 2# This file is subject to the terms and conditions of the GNU General Public 3# License. See the file "COPYING" in the main directory of this archive 4# for more details. 5# 6# Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle 7# DECStation modifications by Paul M. Antoine, 1996 8# Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki 9# 10# This file is included by the global makefile so that you can add your own 11# architecture-specific flags and dependencies. Remember to do have actions 12# for "archclean" cleaning up for this architecture. 13# 14 15archscripts: scripts_basic 16 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry 17ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y) 18 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check 19endif 20 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs 21 22KBUILD_DEFCONFIG := 32r2el_defconfig 23KBUILD_DTBS := dtbs 24 25# 26# Select the object file format to substitute into the linker script. 27# 28ifdef CONFIG_CPU_LITTLE_ENDIAN 2932bit-tool-archpref = mipsel 3064bit-tool-archpref = mips64el 3132bit-bfd = elf32-tradlittlemips 3264bit-bfd = elf64-tradlittlemips 3332bit-emul = elf32ltsmip 3464bit-emul = elf64ltsmip 35else 3632bit-tool-archpref = mips 3764bit-tool-archpref = mips64 3832bit-bfd = elf32-tradbigmips 3964bit-bfd = elf64-tradbigmips 4032bit-emul = elf32btsmip 4164bit-emul = elf64btsmip 42endif 43 44ifdef CONFIG_32BIT 45tool-archpref = $(32bit-tool-archpref) 46UTS_MACHINE := mips 47endif 48ifdef CONFIG_64BIT 49tool-archpref = $(64bit-tool-archpref) 50UTS_MACHINE := mips64 51endif 52 53ifneq ($(SUBARCH),$(ARCH)) 54 ifeq ($(CROSS_COMPILE),) 55 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) 56 endif 57endif 58 59ifdef CONFIG_FUNCTION_GRAPH_TRACER 60 ifndef KBUILD_MCOUNT_RA_ADDRESS 61 ifeq ($(call cc-option-yn,-mmcount-ra-address), y) 62 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS 63 endif 64 endif 65endif 66cflags-y += $(call cc-option, -mno-check-zero-division) 67 68ifdef CONFIG_32BIT 69ld-emul = $(32bit-emul) 70vmlinux-32 = vmlinux 71vmlinux-64 = vmlinux.64 72 73cflags-y += -mabi=32 74endif 75 76ifdef CONFIG_64BIT 77ld-emul = $(64bit-emul) 78vmlinux-32 = vmlinux.32 79vmlinux-64 = vmlinux 80 81cflags-y += -mabi=64 82endif 83 84all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) 85all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) 86all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz 87 88# 89# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 90# code since it only slows down the whole thing. At some point we might make 91# use of global pointer optimizations but their use of $28 conflicts with 92# the current pointer optimization. 93# 94# The DECStation requires an ECOFF kernel for remote booting, other MIPS 95# machines may also. Since BFD is incredibly buggy with respect to 96# crossformat linking we rely on the elf2ecoff tool for format conversion. 97# 98cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 99cflags-y += -msoft-float 100LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 101KBUILD_AFLAGS_MODULE += -mlong-calls 102KBUILD_CFLAGS_MODULE += -mlong-calls 103 104ifeq ($(CONFIG_RELOCATABLE),y) 105LDFLAGS_vmlinux += --emit-relocs 106endif 107 108# 109# pass -msoft-float to GAS if it supports it. However on newer binutils 110# (specifically newer than 2.24.51.20140728) we then also need to explicitly 111# set ".set hardfloat" in all files which manipulate floating point registers. 112# 113ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) 114 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float 115endif 116 117cflags-y += -ffreestanding 118 119cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 120cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL 121 122cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 123 -fno-omit-frame-pointer 124 125# Some distribution-specific toolchains might pass the -fstack-check 126# option during the build, which adds a simple stack-probe at the beginning 127# of every function. This stack probe is to ensure that there is enough 128# stack space, else a SEGV is generated. This is not desirable for MIPS 129# as kernel stacks are small, placed in unmapped virtual memory, and do not 130# grow when overflowed. Especially on SGI IP27 platforms, this check will 131# lead to a NULL pointer dereference in _raw_spin_lock_irq. 132# 133# In disassembly, this stack probe appears at the top of a function as: 134# sd zero,<offset>(sp) 135# Where <offset> is a negative value. 136# 137cflags-y += -fno-stack-check 138 139# 140# CPU-dependent compiler/assembler options for optimization. 141# 142cflags-$(CONFIG_CPU_R3000) += -march=r3000 143cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 144cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 145cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 146cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 147cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap 148cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap 149cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg 150cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg 151cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap 152cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap 153cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap 154cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 155cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg 156cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 157cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 158 -Wa,--trap 159cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 160 -Wa,--trap 161cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 162 -Wa,--trap 163cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 164 -Wa,--trap 165cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 166cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 167cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 168 -Wa,--trap 169cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 170ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 171cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 172endif 173cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 174cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 175 176cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 177cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 178cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 179 180# For smartmips configurations, there are hundreds of warnings due to ISA overrides 181# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 182# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 183# similar directives in the kernel will spam the build logs with the following warnings: 184# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 185# or 186# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 187# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 188# been fixed properly. 189mips-cflags := $(cflags-y) 190ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 191smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 192cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 193endif 194ifeq ($(CONFIG_CPU_MICROMIPS),y) 195micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 196cflags-$(micromips-ase) += -mmicromips 197endif 198ifeq ($(CONFIG_CPU_HAS_MSA),y) 199toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 200cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 201endif 202toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 203cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 204# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which 205# only warns 206xpa-cflags-y := $(mips-cflags) 207xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings 208toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa) 209cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA 210toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc) 211cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC 212toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp) 213cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP 214toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv) 215cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV 216 217# 218# Firmware support 219# 220libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 221libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 222libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 223libs-y += arch/mips/fw/lib/ 224 225# 226# Kernel compression 227# 228ifdef CONFIG_SYS_SUPPORTS_ZBOOT 229COMPRESSION_FNAME = vmlinuz 230else 231COMPRESSION_FNAME = vmlinux 232endif 233 234# 235# Board-dependent options and extra files 236# 237include arch/mips/Kbuild.platforms 238 239ifdef CONFIG_PHYSICAL_START 240load-y = $(CONFIG_PHYSICAL_START) 241endif 242 243entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux) 244cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 245drivers-$(CONFIG_PCI) += arch/mips/pci/ 246 247# 248# Automatically detect the build format. By default we choose 249# the elf format according to the load address. 250# We can always force a build with a 64-bits symbol format by 251# passing 'KBUILD_SYM32=no' option to the make's command line. 252# 253ifdef CONFIG_64BIT 254 ifndef KBUILD_SYM32 255 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 256 KBUILD_SYM32 = y 257 endif 258 endif 259 260 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 261 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 262 else 263 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 264 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 265 endif 266 endif 267endif 268 269# When linking a 32-bit executable the LLVM linker cannot cope with a 270# 32-bit load address that has been sign-extended to 64 bits. Simply 271# remove the upper 32 bits then, as it is safe to do so with other 272# linkers. 273ifdef CONFIG_64BIT 274 load-ld = $(load-y) 275else 276 load-ld = $(subst 0xffffffff,0x,$(load-y)) 277endif 278 279KBUILD_AFLAGS += $(cflags-y) 280KBUILD_CFLAGS += $(cflags-y) 281KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld) 282KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 283 284bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 285 LINKER_LOAD_ADDRESS=$(load-ld) \ 286 VMLINUX_ENTRY_ADDRESS=$(entry-y) \ 287 PLATFORM="$(platform-y)" \ 288 ITS_INPUTS="$(its-y)" 289ifdef CONFIG_32BIT 290bootvars-y += ADDR_BITS=32 291endif 292ifdef CONFIG_64BIT 293bootvars-y += ADDR_BITS=64 294endif 295 296# This is required to get dwarf unwinding tables into .debug_frame 297# instead of .eh_frame so we don't discard them. 298KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 299 300KBUILD_LDFLAGS += -m $(ld-emul) 301 302ifdef CONFIG_MIPS 303CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 304 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 305 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 306endif 307 308OBJCOPYFLAGS += --remove-section=.reginfo 309 310head-y := arch/mips/kernel/head.o 311 312libs-y += arch/mips/lib/ 313libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/ 314 315# See arch/mips/Kbuild for content of core part of the kernel 316core-y += arch/mips/ 317 318drivers-y += arch/mips/crypto/ 319drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 320 321# suspend and hibernation support 322drivers-$(CONFIG_PM) += arch/mips/power/ 323 324# boot image targets (arch/mips/boot/) 325boot-y := vmlinux.bin 326boot-y += vmlinux.ecoff 327boot-y += vmlinux.srec 328ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0) 329boot-y += uImage 330boot-y += uImage.bin 331boot-y += uImage.bz2 332boot-y += uImage.gz 333boot-y += uImage.lzma 334boot-y += uImage.lzo 335endif 336boot-y += vmlinux.itb 337boot-y += vmlinux.gz.itb 338boot-y += vmlinux.bz2.itb 339boot-y += vmlinux.lzma.itb 340boot-y += vmlinux.lzo.itb 341 342# compressed boot image targets (arch/mips/boot/compressed/) 343bootz-y := vmlinuz 344bootz-y += vmlinuz.bin 345bootz-y += vmlinuz.ecoff 346bootz-y += vmlinuz.srec 347ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0) 348bootz-y += uzImage.bin 349endif 350 351# 352# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 353# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 354# convert to ECOFF using elf2ecoff. 355# 356quiet_cmd_32 = OBJCOPY $@ 357 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 358vmlinux.32: vmlinux 359 $(call cmd,32) 360 361# 362# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 363# ELF files from 32-bit files by conversion. 364# 365quiet_cmd_64 = OBJCOPY $@ 366 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 367vmlinux.64: vmlinux 368 $(call cmd,64) 369 370all: $(all-y) $(KBUILD_DTBS) 371 372# boot 373$(boot-y): $(vmlinux-32) FORCE 374 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 375 $(bootvars-y) arch/mips/boot/$@ 376 377ifdef CONFIG_SYS_SUPPORTS_ZBOOT 378# boot/compressed 379$(bootz-y): $(vmlinux-32) FORCE 380 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 381 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@ 382else 383vmlinuz: FORCE 384 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 385 /bin/false 386endif 387 388 389CLEAN_FILES += vmlinux.32 vmlinux.64 390 391# device-trees 392core-y += arch/mips/boot/dts/ 393 394archprepare: 395ifdef CONFIG_MIPS32_N32 396 @$(kecho) ' Checking missing-syscalls for N32' 397 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 398endif 399ifdef CONFIG_MIPS32_O32 400 @$(kecho) ' Checking missing-syscalls for O32' 401 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 402endif 403 404install: 405 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 406ifdef CONFIG_SYS_SUPPORTS_ZBOOT 407 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 408endif 409 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 410 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 411 412archclean: 413 $(Q)$(MAKE) $(clean)=arch/mips/boot 414 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 415 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools 416 417archheaders: 418 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all 419 420define archhelp 421 echo ' install - install kernel into $(INSTALL_PATH)' 422 echo ' vmlinux.ecoff - ECOFF boot image' 423 echo ' vmlinux.bin - Raw binary boot image' 424 echo ' vmlinux.srec - SREC boot image' 425 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 426 echo ' vmlinuz - Compressed boot(zboot) image' 427 echo ' vmlinuz.ecoff - ECOFF zboot image' 428 echo ' vmlinuz.bin - Raw binary zboot image' 429 echo ' vmlinuz.srec - SREC zboot image' 430 echo ' uImage - U-Boot image' 431 echo ' uImage.bin - U-Boot image (uncompressed)' 432 echo ' uImage.bz2 - U-Boot image (bz2)' 433 echo ' uImage.gz - U-Boot image (gzip)' 434 echo ' uImage.lzma - U-Boot image (lzma)' 435 echo ' uImage.lzo - U-Boot image (lzo)' 436 echo ' uzImage.bin - U-Boot image (self-extracting)' 437 echo 438 echo ' These will be default as appropriate for a configured platform.' 439 echo 440 echo ' If you are targeting a system supported by generic kernels you may' 441 echo ' configure the kernel for a given architecture target like so:' 442 echo 443 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' 444 echo 445 echo ' Where BOARDS is some subset of the following:' 446 for board in $(sort $(BOARDS)); do echo " $${board}"; done 447 echo 448 echo ' Specifically the following generic default configurations are' 449 echo ' supported:' 450 echo 451 $(foreach cfg,$(generic_defconfigs), 452 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);) 453 echo 454 echo ' The following legacy default configurations have been converted to' 455 echo ' generic and can still be used:' 456 echo 457 $(foreach cfg,$(sort $(legacy_defconfigs)), 458 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);) 459 echo 460 echo ' Otherwise, the following default configurations are available:' 461endef 462 463generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic 464generic_defconfigs := 465 466# 467# If the user generates a generic kernel configuration without specifying a 468# list of boards to include the config fragments for, default to including all 469# available board config fragments. 470# 471ifeq ($(BOARDS),) 472BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) 473endif 474 475# 476# Generic kernel configurations which merge generic_defconfig with the 477# appropriate config fragments from arch/mips/configs/generic/, resulting in 478# the ability to easily configure the kernel for a given architecture, 479# endianness & set of boards without duplicating the needed configuration in 480# hundreds of defconfig files. 481# 482define gen_generic_defconfigs 483$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), 484target := $(bits)$(rev)$(filter el,$(endian))_defconfig 485generic_defconfigs += $$(target) 486$$(target): $(generic_config_dir)/$(bits)$(rev).config 487$$(target): $(generic_config_dir)/$(endian).config 488))) 489endef 490 491$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) 492$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) 493 494define describe_generic_defconfig 495$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1))))) 496endef 497 498.PHONY: $(generic_defconfigs) 499$(generic_defconfigs): 500 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 501 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \ 502 grep -Ev '^#' 503 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@ 504 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \ 505 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null 506 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \ 507 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \ 508 "$(origin BOARDS)" $(BOARDS) 509 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 510 511# 512# Prevent generic merge_config rules attempting to merge single fragments 513# 514$(generic_config_dir)/%.config: ; 515 516# 517# Prevent direct use of generic_defconfig, which is intended to be used as the 518# basis of the various ISA-specific targets generated above. 519# 520.PHONY: generic_defconfig 521generic_defconfig: 522 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be" 523 $(Q)echo "used via an ISA-specific target from the following list:" 524 $(Q)echo 525 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done 526 $(Q)echo 527 $(Q)false 528 529# 530# Legacy defconfig compatibility - these targets used to be real defconfigs but 531# now that the boards have been converted to use the generic kernel they are 532# wrappers around the generic rules above. 533# 534legacy_defconfigs += ocelot_defconfig 535ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot 536 537legacy_defconfigs += sead3_defconfig 538sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3 539 540legacy_defconfigs += sead3micro_defconfig 541sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3 542 543legacy_defconfigs += xilfpga_defconfig 544xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga 545 546.PHONY: $(legacy_defconfigs) 547$(legacy_defconfigs): 548 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y) 549