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 $28 conflicts with 91# the current pointer optimization. 92# 93# The DECStation requires an ECOFF kernel for remote booting, other MIPS 94# machines may also. Since BFD is incredibly buggy with respect to 95# crossformat linking we rely on the elf2ecoff tool for format conversion. 96# 97cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 98cflags-y += -msoft-float -Wa,-msoft-float 99LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 100KBUILD_AFLAGS_MODULE += -mlong-calls 101KBUILD_CFLAGS_MODULE += -mlong-calls 102 103cflags-y += -ffreestanding 104 105cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 106cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL 107 108cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 109 -fno-omit-frame-pointer 110 111# Some distribution-specific toolchains might pass the -fstack-check 112# option during the build, which adds a simple stack-probe at the beginning 113# of every function. This stack probe is to ensure that there is enough 114# stack space, else a SEGV is generated. This is not desirable for MIPS 115# as kernel stacks are small, placed in unmapped virtual memory, and do not 116# grow when overflowed. Especially on SGI IP27 platforms, this check will 117# lead to a NULL pointer dereference in _raw_spin_lock_irq. 118# 119# In disassembly, this stack probe appears at the top of a function as: 120# sd zero,<offset>(sp) 121# Where <offset> is a negative value. 122# 123cflags-y += -fno-stack-check 124 125# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes, 126# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll 127# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h 128# for a description). 129# 130# We disable this in order to prevent the assembler meddling with the 131# instruction that labels refer to, ie. if we label an ll instruction: 132# 133# 1: ll v0, 0(a0) 134# 135# ...then with the assembler fix applied the label may actually point at a sync 136# instruction inserted by the assembler, and if we were using the label in an 137# exception table the table would no longer contain the address of the ll 138# instruction. 139# 140# Avoid this by explicitly disabling that assembler behaviour. 141# 142cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,) 143 144# 145# CPU-dependent compiler/assembler options for optimization. 146# 147cflags-$(CONFIG_CPU_R3000) += $(call cc-option,-march=r3000,-march=mips1) 148cflags-$(CONFIG_CPU_R4300) += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap 149cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap 150cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap 151cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap 152cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap 153cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg 154cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg 155cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap 156cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap 157cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap 158cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 159cflags-$(CONFIG_CPU_P5600) += $(call cc-option,-march=p5600,-march=mips32r5) \ 160 -Wa,--trap -modd-spreg 161cflags-$(CONFIG_CPU_R5000) += $(call cc-option,-march=r5000,-march=mips4) \ 162 -Wa,--trap 163cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=mips4) \ 164 -Wa,--trap 165cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=mips4) \ 166 -Wa,--trap 167cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=mips4) \ 168 -Wa,--trap 169cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=mips64) \ 170 -Wa,--trap 171cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 172cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 173cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=mips4) \ 174 -Wa,--trap 175cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap 176cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 177cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,--trap 178 179cflags-$(CONFIG_CPU_LOONGSON2E) += \ 180 $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap 181cflags-$(CONFIG_CPU_LOONGSON2F) += \ 182 $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap 183# Some -march= flags enable MMI instructions, and GCC complains about that 184# support being enabled alongside -msoft-float. Thus explicitly disable MMI. 185cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi) 186cflags-$(CONFIG_CPU_LOONGSON64) += \ 187 $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap 188cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi) 189 190cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 191cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 192cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 193ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS 194cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop 195cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump 196endif 197 198# 199# Some versions of binutils, not currently mainline as of 2019/02/04, support 200# an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction 201# to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a 202# description). 203# 204# We disable this in order to prevent the assembler meddling with the 205# instruction that labels refer to, ie. if we label an ll instruction: 206# 207# 1: ll v0, 0(a0) 208# 209# ...then with the assembler fix applied the label may actually point at a sync 210# instruction inserted by the assembler, and if we were using the label in an 211# exception table the table would no longer contain the address of the ll 212# instruction. 213# 214# Avoid this by explicitly disabling that assembler behaviour. If upstream 215# binutils does not merge support for the flag then we can revisit & remove 216# this later - for now it ensures vendor toolchains don't cause problems. 217# 218cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,) 219 220# For smartmips configurations, there are hundreds of warnings due to ISA overrides 221# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 222# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 223# similar directives in the kernel will spam the build logs with the following warnings: 224# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 225# or 226# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 227# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 228# been fixed properly. 229mips-cflags := $(cflags-y) 230ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 231smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 232cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 233endif 234ifeq ($(CONFIG_CPU_MICROMIPS),y) 235micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 236cflags-$(micromips-ase) += -mmicromips 237endif 238ifeq ($(CONFIG_CPU_HAS_MSA),y) 239toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 240cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 241endif 242toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 243cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 244# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which 245# only warns 246xpa-cflags-y := $(mips-cflags) 247xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings 248toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa) 249cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA 250toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc) 251cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC 252toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp) 253cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP 254toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv) 255cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV 256 257# 258# Firmware support 259# 260libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 261libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 262libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 263libs-y += arch/mips/fw/lib/ 264 265# 266# Kernel compression 267# 268ifdef CONFIG_SYS_SUPPORTS_ZBOOT 269COMPRESSION_FNAME = vmlinuz 270else 271COMPRESSION_FNAME = vmlinux 272endif 273 274# 275# Board-dependent options and extra files 276# 277include $(srctree)/arch/mips/Kbuild.platforms 278 279ifdef CONFIG_PHYSICAL_START 280load-y = $(CONFIG_PHYSICAL_START) 281endif 282 283entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux) 284cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 285drivers-$(CONFIG_PCI) += arch/mips/pci/ 286 287# 288# Automatically detect the build format. By default we choose 289# the elf format according to the load address. 290# We can always force a build with a 64-bits symbol format by 291# passing 'KBUILD_SYM32=no' option to the make's command line. 292# 293ifdef CONFIG_64BIT 294 ifndef KBUILD_SYM32 295 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 296 KBUILD_SYM32 = $(call cc-option-yn, -msym32) 297 endif 298 endif 299 300 ifeq ($(KBUILD_SYM32), y) 301 cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32 302 else 303 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 304 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 305 endif 306 endif 307endif 308 309# When linking a 32-bit executable the LLVM linker cannot cope with a 310# 32-bit load address that has been sign-extended to 64 bits. Simply 311# remove the upper 32 bits then, as it is safe to do so with other 312# linkers. 313ifdef CONFIG_64BIT 314 load-ld = $(load-y) 315else 316 load-ld = $(subst 0xffffffff,0x,$(load-y)) 317endif 318 319KBUILD_AFLAGS += $(cflags-y) 320KBUILD_CFLAGS += $(cflags-y) 321KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld) 322KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 323 324bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 325 LINKER_LOAD_ADDRESS=$(load-ld) \ 326 VMLINUX_ENTRY_ADDRESS=$(entry-y) \ 327 PLATFORM="$(platform-y)" \ 328 ITS_INPUTS="$(its-y)" 329ifdef CONFIG_32BIT 330bootvars-y += ADDR_BITS=32 331endif 332ifdef CONFIG_64BIT 333bootvars-y += ADDR_BITS=64 334endif 335 336# This is required to get dwarf unwinding tables into .debug_frame 337# instead of .eh_frame so we don't discard them. 338KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 339 340KBUILD_LDFLAGS += -m $(ld-emul) 341 342ifdef need-compiler 343CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 344 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \ 345 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 346endif 347 348OBJCOPYFLAGS += --remove-section=.reginfo 349 350libs-y += arch/mips/lib/ 351libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/ 352 353drivers-y += arch/mips/crypto/ 354 355# suspend and hibernation support 356drivers-$(CONFIG_PM) += arch/mips/power/ 357 358# boot image targets (arch/mips/boot/) 359boot-y := vmlinux.bin 360boot-y += vmlinux.ecoff 361boot-y += vmlinux.srec 362boot-y += uImage 363boot-y += uImage.bin 364boot-y += uImage.bz2 365boot-y += uImage.gz 366boot-y += uImage.lzma 367boot-y += uImage.lzo 368boot-y += vmlinux.itb 369boot-y += vmlinux.gz.itb 370boot-y += vmlinux.bz2.itb 371boot-y += vmlinux.lzma.itb 372boot-y += vmlinux.lzo.itb 373 374# compressed boot image targets (arch/mips/boot/compressed/) 375bootz-y := vmlinuz 376bootz-y += vmlinuz.bin 377bootz-y += vmlinuz.ecoff 378bootz-y += vmlinuz.srec 379bootz-y += uzImage.bin 380bootz-y += vmlinuz.itb 381 382# 383# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 384# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 385# convert to ECOFF using elf2ecoff. 386# 387quiet_cmd_32 = OBJCOPY $@ 388 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 389vmlinux.32: vmlinux 390 $(call cmd,32) 391 392# 393# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 394# ELF files from 32-bit files by conversion. 395# 396quiet_cmd_64 = OBJCOPY $@ 397 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 398vmlinux.64: vmlinux 399 $(call cmd,64) 400 401all: $(all-y) $(KBUILD_DTBS) 402 403# boot 404$(boot-y): $(vmlinux-32) FORCE 405 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 406 $(bootvars-y) arch/mips/boot/$@ 407 408ifdef CONFIG_SYS_SUPPORTS_ZBOOT 409# boot/compressed 410$(bootz-y): $(vmlinux-32) FORCE 411 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 412 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@ 413else 414vmlinuz: FORCE 415 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 416 /bin/false 417endif 418 419 420CLEAN_FILES += vmlinux.32 vmlinux.64 421 422archprepare: 423ifdef CONFIG_MIPS32_N32 424 @$(kecho) ' Checking missing-syscalls for N32' 425 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 426endif 427ifdef CONFIG_MIPS32_O32 428 @$(kecho) ' Checking missing-syscalls for O32' 429 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 430endif 431 432install: 433 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 434ifdef CONFIG_SYS_SUPPORTS_ZBOOT 435 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 436endif 437 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 438 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 439 440archheaders: 441 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all 442 443define archhelp 444 echo ' install - install kernel into $(INSTALL_PATH)' 445 echo ' vmlinux.ecoff - ECOFF boot image' 446 echo ' vmlinux.bin - Raw binary boot image' 447 echo ' vmlinux.srec - SREC boot image' 448 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 449 echo ' vmlinuz - Compressed boot(zboot) image' 450 echo ' vmlinuz.ecoff - ECOFF zboot image' 451 echo ' vmlinuz.bin - Raw binary zboot image' 452 echo ' vmlinuz.srec - SREC zboot image' 453 echo ' uImage - U-Boot image' 454 echo ' uImage.bin - U-Boot image (uncompressed)' 455 echo ' uImage.bz2 - U-Boot image (bz2)' 456 echo ' uImage.gz - U-Boot image (gzip)' 457 echo ' uImage.lzma - U-Boot image (lzma)' 458 echo ' uImage.lzo - U-Boot image (lzo)' 459 echo ' uzImage.bin - U-Boot image (self-extracting)' 460 echo 461 echo ' These will be default as appropriate for a configured platform.' 462 echo 463 echo ' If you are targeting a system supported by generic kernels you may' 464 echo ' configure the kernel for a given architecture target like so:' 465 echo 466 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' 467 echo 468 echo ' Where BOARDS is some subset of the following:' 469 for board in $(sort $(BOARDS)); do echo " $${board}"; done 470 echo 471 echo ' Specifically the following generic default configurations are' 472 echo ' supported:' 473 echo 474 $(foreach cfg,$(generic_defconfigs), 475 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);) 476 echo 477 echo ' The following legacy default configurations have been converted to' 478 echo ' generic and can still be used:' 479 echo 480 $(foreach cfg,$(sort $(legacy_defconfigs)), 481 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);) 482 echo 483 echo ' Otherwise, the following default configurations are available:' 484endef 485 486generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic 487generic_defconfigs := 488 489# 490# If the user generates a generic kernel configuration without specifying a 491# list of boards to include the config fragments for, default to including all 492# available board config fragments. 493# 494ifeq ($(BOARDS),) 495BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) 496endif 497 498# 499# Generic kernel configurations which merge generic_defconfig with the 500# appropriate config fragments from arch/mips/configs/generic/, resulting in 501# the ability to easily configure the kernel for a given architecture, 502# endianness & set of boards without duplicating the needed configuration in 503# hundreds of defconfig files. 504# 505define gen_generic_defconfigs 506$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), 507target := $(bits)$(rev)$(filter el,$(endian))_defconfig 508generic_defconfigs += $$(target) 509$$(target): $(generic_config_dir)/$(bits)$(rev).config 510$$(target): $(generic_config_dir)/$(endian).config 511))) 512endef 513 514$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) 515$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) 516 517define describe_generic_defconfig 518$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1))))) 519endef 520 521.PHONY: $(generic_defconfigs) 522$(generic_defconfigs): 523 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 524 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \ 525 grep -Ev '^#' 526 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@ 527 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \ 528 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null 529 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \ 530 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \ 531 "$(origin BOARDS)" $(BOARDS) 532 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 533 534# 535# Prevent generic merge_config rules attempting to merge single fragments 536# 537$(generic_config_dir)/%.config: ; 538 539# 540# Prevent direct use of generic_defconfig, which is intended to be used as the 541# basis of the various ISA-specific targets generated above. 542# 543.PHONY: generic_defconfig 544generic_defconfig: 545 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be" 546 $(Q)echo "used via an ISA-specific target from the following list:" 547 $(Q)echo 548 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done 549 $(Q)echo 550 $(Q)false 551 552# 553# Legacy defconfig compatibility - these targets used to be real defconfigs but 554# now that the boards have been converted to use the generic kernel they are 555# wrappers around the generic rules above. 556# 557legacy_defconfigs += ocelot_defconfig 558ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot 559 560legacy_defconfigs += sead3_defconfig 561sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3 562 563legacy_defconfigs += sead3micro_defconfig 564sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3 565 566legacy_defconfigs += xilfpga_defconfig 567xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga 568 569legacy_defconfigs += pistachio_defconfig 570pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk 571 572.PHONY: $(legacy_defconfigs) 573$(legacy_defconfigs): 574 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y) 575