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. 12# 13 14archscripts: scripts_basic 15 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry 16ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y) 17 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check 18endif 19 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs 20 21KBUILD_DEFCONFIG := 32r2el_defconfig 22KBUILD_DTBS := dtbs 23 24# 25# Select the object file format to substitute into the linker script. 26# 27ifdef CONFIG_CPU_LITTLE_ENDIAN 2832bit-tool-archpref = mipsel 2964bit-tool-archpref = mips64el 3032bit-bfd = elf32-tradlittlemips 3164bit-bfd = elf64-tradlittlemips 3232bit-emul = elf32ltsmip 3364bit-emul = elf64ltsmip 34else 3532bit-tool-archpref = mips 3664bit-tool-archpref = mips64 3732bit-bfd = elf32-tradbigmips 3864bit-bfd = elf64-tradbigmips 3932bit-emul = elf32btsmip 4064bit-emul = elf64btsmip 41endif 42 43ifdef CONFIG_32BIT 44tool-archpref = $(32bit-tool-archpref) 45UTS_MACHINE := mips 46endif 47ifdef CONFIG_64BIT 48tool-archpref = $(64bit-tool-archpref) 49UTS_MACHINE := mips64 50endif 51 52ifdef cross_compiling 53 ifeq ($(CROSS_COMPILE),) 54 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) 55 endif 56endif 57 58ifdef CONFIG_FUNCTION_GRAPH_TRACER 59 ifndef KBUILD_MCOUNT_RA_ADDRESS 60 ifeq ($(call cc-option-yn,-mmcount-ra-address), y) 61 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS 62 endif 63 endif 64endif 65cflags-y += $(call cc-option, -mno-check-zero-division) 66 67ifdef CONFIG_32BIT 68ld-emul = $(32bit-emul) 69vmlinux-32 = vmlinux 70vmlinux-64 = vmlinux.64 71 72cflags-y += -mabi=32 73endif 74 75ifdef CONFIG_64BIT 76ld-emul = $(64bit-emul) 77vmlinux-32 = vmlinux.32 78vmlinux-64 = vmlinux 79 80cflags-y += -mabi=64 81endif 82 83all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) 84all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) 85all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz 86 87# 88# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 89# code since it only slows down the whole thing. At some point we might make 90# use of global pointer optimizations but their use of $28 conflicts with 91# the current pointer optimization. 92# 93# The DECStation requires an ECOFF kernel for remote booting, other MIPS 94# machines may also. Since BFD is incredibly buggy with respect to 95# crossformat linking we rely on the elf2ecoff tool for format conversion. 96# 97cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 98cflags-y += -msoft-float 99LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 100KBUILD_AFLAGS_MODULE += -mlong-calls 101KBUILD_CFLAGS_MODULE += -mlong-calls 102 103ifeq ($(CONFIG_RELOCATABLE),y) 104LDFLAGS_vmlinux += --emit-relocs 105endif 106 107# 108# pass -msoft-float to GAS if it supports it. However on newer binutils 109# (specifically newer than 2.24.51.20140728) we then also need to explicitly 110# set ".set hardfloat" in all files which manipulate floating point registers. 111# 112ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) 113 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float 114endif 115 116cflags-y += -ffreestanding 117 118cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 119cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL 120 121cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 122 -fno-omit-frame-pointer 123 124# Some distribution-specific toolchains might pass the -fstack-check 125# option during the build, which adds a simple stack-probe at the beginning 126# of every function. This stack probe is to ensure that there is enough 127# stack space, else a SEGV is generated. This is not desirable for MIPS 128# as kernel stacks are small, placed in unmapped virtual memory, and do not 129# grow when overflowed. Especially on SGI IP27 platforms, this check will 130# lead to a NULL pointer dereference in _raw_spin_lock_irq. 131# 132# In disassembly, this stack probe appears at the top of a function as: 133# sd zero,<offset>(sp) 134# Where <offset> is a negative value. 135# 136cflags-y += -fno-stack-check 137 138# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes, 139# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll 140# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h 141# for a description). 142# 143# We disable this in order to prevent the assembler meddling with the 144# instruction that labels refer to, ie. if we label an ll instruction: 145# 146# 1: ll v0, 0(a0) 147# 148# ...then with the assembler fix applied the label may actually point at a sync 149# instruction inserted by the assembler, and if we were using the label in an 150# exception table the table would no longer contain the address of the ll 151# instruction. 152# 153# Avoid this by explicitly disabling that assembler behaviour. 154# 155cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,) 156 157# 158# CPU-dependent compiler/assembler options for optimization. 159# 160cflags-$(CONFIG_CPU_R3000) += -march=r3000 161cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 162cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 163cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 164cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap 165cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap 166cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg 167cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg 168cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap 169cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap 170cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap 171cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 172cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg 173cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 174cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 175 -Wa,--trap 176cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 177 -Wa,--trap 178cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 179 -Wa,--trap 180cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 181 -Wa,--trap 182cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 183cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 184cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 185 -Wa,--trap 186cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 187ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 188cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 189endif 190cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 191cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 192 193cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 194cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 195cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 196 197# For smartmips configurations, there are hundreds of warnings due to ISA overrides 198# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 199# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 200# similar directives in the kernel will spam the build logs with the following warnings: 201# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 202# or 203# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 204# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 205# been fixed properly. 206mips-cflags := $(cflags-y) 207ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 208smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 209cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 210endif 211ifeq ($(CONFIG_CPU_MICROMIPS),y) 212micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 213cflags-$(micromips-ase) += -mmicromips 214endif 215ifeq ($(CONFIG_CPU_HAS_MSA),y) 216toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 217cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 218endif 219toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 220cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 221# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which 222# only warns 223xpa-cflags-y := $(mips-cflags) 224xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings 225toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa) 226cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA 227toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc) 228cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC 229toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp) 230cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP 231toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv) 232cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV 233 234# 235# Firmware support 236# 237libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 238libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 239libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 240libs-y += arch/mips/fw/lib/ 241 242# 243# Kernel compression 244# 245ifdef CONFIG_SYS_SUPPORTS_ZBOOT 246COMPRESSION_FNAME = vmlinuz 247else 248COMPRESSION_FNAME = vmlinux 249endif 250 251# 252# Board-dependent options and extra files 253# 254include $(srctree)/arch/mips/Kbuild.platforms 255 256ifdef CONFIG_PHYSICAL_START 257load-y = $(CONFIG_PHYSICAL_START) 258endif 259 260entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux) 261cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 262drivers-$(CONFIG_PCI) += arch/mips/pci/ 263 264# 265# Automatically detect the build format. By default we choose 266# the elf format according to the load address. 267# We can always force a build with a 64-bits symbol format by 268# passing 'KBUILD_SYM32=no' option to the make's command line. 269# 270ifdef CONFIG_64BIT 271 ifndef KBUILD_SYM32 272 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 273 KBUILD_SYM32 = y 274 endif 275 endif 276 277 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 278 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 279 else 280 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 281 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 282 endif 283 endif 284endif 285 286# When linking a 32-bit executable the LLVM linker cannot cope with a 287# 32-bit load address that has been sign-extended to 64 bits. Simply 288# remove the upper 32 bits then, as it is safe to do so with other 289# linkers. 290ifdef CONFIG_64BIT 291 load-ld = $(load-y) 292else 293 load-ld = $(subst 0xffffffff,0x,$(load-y)) 294endif 295 296KBUILD_AFLAGS += $(cflags-y) 297KBUILD_CFLAGS += $(cflags-y) 298KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld) 299KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 300 301bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 302 LINKER_LOAD_ADDRESS=$(load-ld) \ 303 VMLINUX_ENTRY_ADDRESS=$(entry-y) \ 304 PLATFORM="$(platform-y)" \ 305 ITS_INPUTS="$(its-y)" 306ifdef CONFIG_32BIT 307bootvars-y += ADDR_BITS=32 308endif 309ifdef CONFIG_64BIT 310bootvars-y += ADDR_BITS=64 311endif 312 313# This is required to get dwarf unwinding tables into .debug_frame 314# instead of .eh_frame so we don't discard them. 315KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 316 317KBUILD_LDFLAGS += -m $(ld-emul) 318 319ifdef CONFIG_MIPS 320CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 321 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \ 322 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 323endif 324 325OBJCOPYFLAGS += --remove-section=.reginfo 326 327libs-y += arch/mips/lib/ 328libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/ 329 330drivers-y += arch/mips/crypto/ 331 332# suspend and hibernation support 333drivers-$(CONFIG_PM) += arch/mips/power/ 334 335# boot image targets (arch/mips/boot/) 336boot-y := vmlinux.bin 337boot-y += vmlinux.ecoff 338boot-y += vmlinux.srec 339boot-y += uImage 340boot-y += uImage.bin 341boot-y += uImage.bz2 342boot-y += uImage.gz 343boot-y += uImage.lzma 344boot-y += uImage.lzo 345boot-y += vmlinux.itb 346boot-y += vmlinux.gz.itb 347boot-y += vmlinux.bz2.itb 348boot-y += vmlinux.lzma.itb 349boot-y += vmlinux.lzo.itb 350 351# compressed boot image targets (arch/mips/boot/compressed/) 352bootz-y := vmlinuz 353bootz-y += vmlinuz.bin 354bootz-y += vmlinuz.ecoff 355bootz-y += vmlinuz.srec 356bootz-y += uzImage.bin 357bootz-y += vmlinuz.itb 358 359# 360# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 361# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 362# convert to ECOFF using elf2ecoff. 363# 364quiet_cmd_32 = OBJCOPY $@ 365 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 366vmlinux.32: vmlinux 367 $(call cmd,32) 368 369# 370# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 371# ELF files from 32-bit files by conversion. 372# 373quiet_cmd_64 = OBJCOPY $@ 374 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 375vmlinux.64: vmlinux 376 $(call cmd,64) 377 378all: $(all-y) $(KBUILD_DTBS) 379 380# boot 381$(boot-y): $(vmlinux-32) FORCE 382 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 383 $(bootvars-y) arch/mips/boot/$@ 384 385ifdef CONFIG_SYS_SUPPORTS_ZBOOT 386# boot/compressed 387$(bootz-y): $(vmlinux-32) FORCE 388 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 389 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@ 390else 391vmlinuz: FORCE 392 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 393 /bin/false 394endif 395 396 397CLEAN_FILES += vmlinux.32 vmlinux.64 398 399# device-trees 400core-y += arch/mips/boot/dts/ 401 402archprepare: 403ifdef CONFIG_MIPS32_N32 404 @$(kecho) ' Checking missing-syscalls for N32' 405 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 406endif 407ifdef CONFIG_MIPS32_O32 408 @$(kecho) ' Checking missing-syscalls for O32' 409 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 410endif 411 412install: 413 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 414ifdef CONFIG_SYS_SUPPORTS_ZBOOT 415 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 416endif 417 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 418 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 419 420archheaders: 421 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all 422 423define archhelp 424 echo ' install - install kernel into $(INSTALL_PATH)' 425 echo ' vmlinux.ecoff - ECOFF boot image' 426 echo ' vmlinux.bin - Raw binary boot image' 427 echo ' vmlinux.srec - SREC boot image' 428 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 429 echo ' vmlinuz - Compressed boot(zboot) image' 430 echo ' vmlinuz.ecoff - ECOFF zboot image' 431 echo ' vmlinuz.bin - Raw binary zboot image' 432 echo ' vmlinuz.srec - SREC zboot image' 433 echo ' uImage - U-Boot image' 434 echo ' uImage.bin - U-Boot image (uncompressed)' 435 echo ' uImage.bz2 - U-Boot image (bz2)' 436 echo ' uImage.gz - U-Boot image (gzip)' 437 echo ' uImage.lzma - U-Boot image (lzma)' 438 echo ' uImage.lzo - U-Boot image (lzo)' 439 echo ' uzImage.bin - U-Boot image (self-extracting)' 440 echo 441 echo ' These will be default as appropriate for a configured platform.' 442 echo 443 echo ' If you are targeting a system supported by generic kernels you may' 444 echo ' configure the kernel for a given architecture target like so:' 445 echo 446 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' 447 echo 448 echo ' Where BOARDS is some subset of the following:' 449 for board in $(sort $(BOARDS)); do echo " $${board}"; done 450 echo 451 echo ' Specifically the following generic default configurations are' 452 echo ' supported:' 453 echo 454 $(foreach cfg,$(generic_defconfigs), 455 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);) 456 echo 457 echo ' The following legacy default configurations have been converted to' 458 echo ' generic and can still be used:' 459 echo 460 $(foreach cfg,$(sort $(legacy_defconfigs)), 461 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);) 462 echo 463 echo ' Otherwise, the following default configurations are available:' 464endef 465 466generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic 467generic_defconfigs := 468 469# 470# If the user generates a generic kernel configuration without specifying a 471# list of boards to include the config fragments for, default to including all 472# available board config fragments. 473# 474ifeq ($(BOARDS),) 475BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) 476endif 477 478# 479# Generic kernel configurations which merge generic_defconfig with the 480# appropriate config fragments from arch/mips/configs/generic/, resulting in 481# the ability to easily configure the kernel for a given architecture, 482# endianness & set of boards without duplicating the needed configuration in 483# hundreds of defconfig files. 484# 485define gen_generic_defconfigs 486$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), 487target := $(bits)$(rev)$(filter el,$(endian))_defconfig 488generic_defconfigs += $$(target) 489$$(target): $(generic_config_dir)/$(bits)$(rev).config 490$$(target): $(generic_config_dir)/$(endian).config 491))) 492endef 493 494$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) 495$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) 496 497define describe_generic_defconfig 498$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1))))) 499endef 500 501.PHONY: $(generic_defconfigs) 502$(generic_defconfigs): 503 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 504 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \ 505 grep -Ev '^#' 506 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@ 507 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \ 508 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null 509 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \ 510 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \ 511 "$(origin BOARDS)" $(BOARDS) 512 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 513 514# 515# Prevent generic merge_config rules attempting to merge single fragments 516# 517$(generic_config_dir)/%.config: ; 518 519# 520# Prevent direct use of generic_defconfig, which is intended to be used as the 521# basis of the various ISA-specific targets generated above. 522# 523.PHONY: generic_defconfig 524generic_defconfig: 525 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be" 526 $(Q)echo "used via an ISA-specific target from the following list:" 527 $(Q)echo 528 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done 529 $(Q)echo 530 $(Q)false 531 532# 533# Legacy defconfig compatibility - these targets used to be real defconfigs but 534# now that the boards have been converted to use the generic kernel they are 535# wrappers around the generic rules above. 536# 537legacy_defconfigs += ocelot_defconfig 538ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot 539 540legacy_defconfigs += sead3_defconfig 541sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3 542 543legacy_defconfigs += sead3micro_defconfig 544sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3 545 546legacy_defconfigs += xilfpga_defconfig 547xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga 548 549legacy_defconfigs += pistachio_defconfig 550pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk 551 552.PHONY: $(legacy_defconfigs) 553$(legacy_defconfigs): 554 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y) 555