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 17 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs 18 19KBUILD_DEFCONFIG := 32r2el_defconfig 20KBUILD_DTBS := dtbs 21 22# 23# Select the object file format to substitute into the linker script. 24# 25ifdef CONFIG_CPU_LITTLE_ENDIAN 2632bit-tool-archpref = mipsel 2764bit-tool-archpref = mips64el 2832bit-bfd = elf32-tradlittlemips 2964bit-bfd = elf64-tradlittlemips 3032bit-emul = elf32ltsmip 3164bit-emul = elf64ltsmip 32else 3332bit-tool-archpref = mips 3464bit-tool-archpref = mips64 3532bit-bfd = elf32-tradbigmips 3664bit-bfd = elf64-tradbigmips 3732bit-emul = elf32btsmip 3864bit-emul = elf64btsmip 39endif 40 41ifdef CONFIG_32BIT 42tool-archpref = $(32bit-tool-archpref) 43UTS_MACHINE := mips 44endif 45ifdef CONFIG_64BIT 46tool-archpref = $(64bit-tool-archpref) 47UTS_MACHINE := mips64 48endif 49 50ifneq ($(SUBARCH),$(ARCH)) 51 ifeq ($(CROSS_COMPILE),) 52 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) 53 endif 54endif 55 56ifdef CONFIG_FUNCTION_GRAPH_TRACER 57 ifndef KBUILD_MCOUNT_RA_ADDRESS 58 ifeq ($(call cc-option-yn,-mmcount-ra-address), y) 59 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS 60 endif 61 endif 62endif 63cflags-y += $(call cc-option, -mno-check-zero-division) 64 65ifdef CONFIG_32BIT 66ld-emul = $(32bit-emul) 67vmlinux-32 = vmlinux 68vmlinux-64 = vmlinux.64 69 70cflags-y += -mabi=32 71endif 72 73ifdef CONFIG_64BIT 74ld-emul = $(64bit-emul) 75vmlinux-32 = vmlinux.32 76vmlinux-64 = vmlinux 77 78cflags-y += -mabi=64 79endif 80 81all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) 82all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) 83all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz 84 85# 86# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 87# code since it only slows down the whole thing. At some point we might make 88# use of global pointer optimizations but their use of $28 conflicts with 89# the current pointer optimization. 90# 91# The DECStation requires an ECOFF kernel for remote booting, other MIPS 92# machines may also. Since BFD is incredibly buggy with respect to 93# crossformat linking we rely on the elf2ecoff tool for format conversion. 94# 95cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 96cflags-y += -msoft-float 97LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 98KBUILD_AFLAGS_MODULE += -mlong-calls 99KBUILD_CFLAGS_MODULE += -mlong-calls 100 101ifeq ($(CONFIG_RELOCATABLE),y) 102LDFLAGS_vmlinux += --emit-relocs 103endif 104 105# 106# pass -msoft-float to GAS if it supports it. However on newer binutils 107# (specifically newer than 2.24.51.20140728) we then also need to explicitly 108# set ".set hardfloat" in all files which manipulate floating point registers. 109# 110ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) 111 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float 112endif 113 114cflags-y += -ffreestanding 115 116# 117# We explicitly add the endianness specifier if needed, this allows 118# to compile kernels with a toolchain for the other endianness. We 119# carefully avoid to add it redundantly because gcc 3.3/3.4 complains 120# when fed the toolchain default! 121# 122# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of 123# 2006-10-10 don't properly change the predefined symbols if -EB / -EL 124# are used, so we kludge that here. A bug has been filed at 125# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. 126# 127# clang doesn't suffer from these issues and our checks against -dumpmachine 128# don't work so well when cross compiling, since without providing --target 129# clang's output will be based upon the build machine. So for clang we simply 130# unconditionally specify -EB or -EL as appropriate. 131# 132ifdef CONFIG_CC_IS_CLANG 133cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 134cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL 135else 136undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ 137undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ 138predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ 139predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ 140cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be)) 141cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) 142endif 143 144cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 145 -fno-omit-frame-pointer 146 147# Some distribution-specific toolchains might pass the -fstack-check 148# option during the build, which adds a simple stack-probe at the beginning 149# of every function. This stack probe is to ensure that there is enough 150# stack space, else a SEGV is generated. This is not desirable for MIPS 151# as kernel stacks are small, placed in unmapped virtual memory, and do not 152# grow when overflowed. Especially on SGI IP27 platforms, this check will 153# lead to a NULL pointer dereference in _raw_spin_lock_irq. 154# 155# In disassembly, this stack probe appears at the top of a function as: 156# sd zero,<offset>(sp) 157# Where <offset> is a negative value. 158# 159cflags-y += -fno-stack-check 160 161# 162# CPU-dependent compiler/assembler options for optimization. 163# 164cflags-$(CONFIG_CPU_R3000) += -march=r3000 165cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 166cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 167cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 168cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 169cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 170cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap 171cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap 172cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg 173cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap 174cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap 175cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 176cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 177cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ 178 -Wa,--trap 179cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 180 -Wa,--trap 181cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 182 -Wa,--trap 183cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 184 -Wa,--trap 185cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 186 -Wa,--trap 187cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 188cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 189cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap 190cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 191 -Wa,--trap 192cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 193ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 194cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 195endif 196cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 197cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 198 199cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 200cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 201cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 202 203# For smartmips configurations, there are hundreds of warnings due to ISA overrides 204# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 205# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 206# similar directives in the kernel will spam the build logs with the following warnings: 207# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 208# or 209# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 210# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 211# been fixed properly. 212mips-cflags := $(cflags-y) 213ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 214smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 215cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 216endif 217ifeq ($(CONFIG_CPU_MICROMIPS),y) 218micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 219cflags-$(micromips-ase) += -mmicromips 220endif 221ifeq ($(CONFIG_CPU_HAS_MSA),y) 222toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 223cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 224endif 225toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 226cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 227# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which 228# only warns 229xpa-cflags-y := $(mips-cflags) 230xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings 231toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa) 232cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA 233toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc) 234cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC 235toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp) 236cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP 237toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv) 238cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV 239 240# 241# Firmware support 242# 243libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 244libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 245libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 246libs-y += arch/mips/fw/lib/ 247 248# 249# Kernel compression 250# 251ifdef CONFIG_SYS_SUPPORTS_ZBOOT 252COMPRESSION_FNAME = vmlinuz 253else 254COMPRESSION_FNAME = vmlinux 255endif 256 257# 258# Board-dependent options and extra files 259# 260include arch/mips/Kbuild.platforms 261 262ifdef CONFIG_PHYSICAL_START 263load-y = $(CONFIG_PHYSICAL_START) 264endif 265 266entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux) 267cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 268drivers-$(CONFIG_PCI) += arch/mips/pci/ 269 270# 271# Automatically detect the build format. By default we choose 272# the elf format according to the load address. 273# We can always force a build with a 64-bits symbol format by 274# passing 'KBUILD_SYM32=no' option to the make's command line. 275# 276ifdef CONFIG_64BIT 277 ifndef KBUILD_SYM32 278 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 279 KBUILD_SYM32 = y 280 endif 281 endif 282 283 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 284 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 285 else 286 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 287 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 288 endif 289 endif 290endif 291 292KBUILD_AFLAGS += $(cflags-y) 293KBUILD_CFLAGS += $(cflags-y) 294KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) 295KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 296 297bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 298 VMLINUX_ENTRY_ADDRESS=$(entry-y) \ 299 PLATFORM="$(platform-y)" \ 300 ITS_INPUTS="$(its-y)" 301ifdef CONFIG_32BIT 302bootvars-y += ADDR_BITS=32 303endif 304ifdef CONFIG_64BIT 305bootvars-y += ADDR_BITS=64 306endif 307 308# This is required to get dwarf unwinding tables into .debug_frame 309# instead of .eh_frame so we don't discard them. 310KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 311 312KBUILD_LDFLAGS += -m $(ld-emul) 313 314ifdef CONFIG_MIPS 315CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 316 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 317 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 318endif 319 320OBJCOPYFLAGS += --remove-section=.reginfo 321 322head-y := arch/mips/kernel/head.o 323 324libs-y += arch/mips/lib/ 325libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/ 326 327# See arch/mips/Kbuild for content of core part of the kernel 328core-y += arch/mips/ 329 330drivers-$(CONFIG_MIPS_CRC_SUPPORT) += arch/mips/crypto/ 331drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 332 333# suspend and hibernation support 334drivers-$(CONFIG_PM) += arch/mips/power/ 335 336# boot image targets (arch/mips/boot/) 337boot-y := vmlinux.bin 338boot-y += vmlinux.ecoff 339boot-y += vmlinux.srec 340ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0) 341boot-y += uImage 342boot-y += uImage.bin 343boot-y += uImage.bz2 344boot-y += uImage.gz 345boot-y += uImage.lzma 346boot-y += uImage.lzo 347endif 348boot-y += vmlinux.itb 349boot-y += vmlinux.gz.itb 350boot-y += vmlinux.bz2.itb 351boot-y += vmlinux.lzma.itb 352boot-y += vmlinux.lzo.itb 353 354# compressed boot image targets (arch/mips/boot/compressed/) 355bootz-y := vmlinuz 356bootz-y += vmlinuz.bin 357bootz-y += vmlinuz.ecoff 358bootz-y += vmlinuz.srec 359ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0) 360bootz-y += uzImage.bin 361endif 362 363ifdef CONFIG_LASAT 364rom.bin rom.sw: vmlinux 365 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \ 366 $(bootvars-y) $@ 367endif 368 369# 370# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 371# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 372# convert to ECOFF using elf2ecoff. 373# 374quiet_cmd_32 = OBJCOPY $@ 375 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 376vmlinux.32: vmlinux 377 $(call cmd,32) 378 379# 380# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 381# ELF files from 32-bit files by conversion. 382# 383quiet_cmd_64 = OBJCOPY $@ 384 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 385vmlinux.64: vmlinux 386 $(call cmd,64) 387 388all: $(all-y) $(KBUILD_DTBS) 389 390# boot 391$(boot-y): $(vmlinux-32) FORCE 392 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 393 $(bootvars-y) arch/mips/boot/$@ 394 395ifdef CONFIG_SYS_SUPPORTS_ZBOOT 396# boot/compressed 397$(bootz-y): $(vmlinux-32) FORCE 398 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 399 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@ 400else 401vmlinuz: FORCE 402 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 403 /bin/false 404endif 405 406 407CLEAN_FILES += vmlinux.32 vmlinux.64 408 409# device-trees 410core-y += arch/mips/boot/dts/ 411 412archprepare: 413ifdef CONFIG_MIPS32_N32 414 @$(kecho) ' Checking missing-syscalls for N32' 415 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 416endif 417ifdef CONFIG_MIPS32_O32 418 @$(kecho) ' Checking missing-syscalls for O32' 419 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 420endif 421 422install: 423 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 424ifdef CONFIG_SYS_SUPPORTS_ZBOOT 425 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 426endif 427 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 428 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 429 430archclean: 431 $(Q)$(MAKE) $(clean)=arch/mips/boot 432 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 433 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools 434 $(Q)$(MAKE) $(clean)=arch/mips/lasat 435 436archheaders: 437 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all 438 439define archhelp 440 echo ' install - install kernel into $(INSTALL_PATH)' 441 echo ' vmlinux.ecoff - ECOFF boot image' 442 echo ' vmlinux.bin - Raw binary boot image' 443 echo ' vmlinux.srec - SREC boot image' 444 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 445 echo ' vmlinuz - Compressed boot(zboot) image' 446 echo ' vmlinuz.ecoff - ECOFF zboot image' 447 echo ' vmlinuz.bin - Raw binary zboot image' 448 echo ' vmlinuz.srec - SREC zboot image' 449 echo ' uImage - U-Boot image' 450 echo ' uImage.bin - U-Boot image (uncompressed)' 451 echo ' uImage.bz2 - U-Boot image (bz2)' 452 echo ' uImage.gz - U-Boot image (gzip)' 453 echo ' uImage.lzma - U-Boot image (lzma)' 454 echo ' uImage.lzo - U-Boot image (lzo)' 455 echo ' uzImage.bin - U-Boot image (self-extracting)' 456 echo 457 echo ' These will be default as appropriate for a configured platform.' 458 echo 459 echo ' If you are targeting a system supported by generic kernels you may' 460 echo ' configure the kernel for a given architecture target like so:' 461 echo 462 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' 463 echo 464 echo ' Where BOARDS is some subset of the following:' 465 for board in $(sort $(BOARDS)); do echo " $${board}"; done 466 echo 467 echo ' Specifically the following generic default configurations are' 468 echo ' supported:' 469 echo 470 $(foreach cfg,$(generic_defconfigs), 471 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);) 472 echo 473 echo ' The following legacy default configurations have been converted to' 474 echo ' generic and can still be used:' 475 echo 476 $(foreach cfg,$(sort $(legacy_defconfigs)), 477 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);) 478 echo 479 echo ' Otherwise, the following default configurations are available:' 480endef 481 482generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic 483generic_defconfigs := 484 485# 486# If the user generates a generic kernel configuration without specifying a 487# list of boards to include the config fragments for, default to including all 488# available board config fragments. 489# 490ifeq ($(BOARDS),) 491BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) 492endif 493 494# 495# Generic kernel configurations which merge generic_defconfig with the 496# appropriate config fragments from arch/mips/configs/generic/, resulting in 497# the ability to easily configure the kernel for a given architecture, 498# endianness & set of boards without duplicating the needed configuration in 499# hundreds of defconfig files. 500# 501define gen_generic_defconfigs 502$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), 503target := $(bits)$(rev)$(filter el,$(endian))_defconfig 504generic_defconfigs += $$(target) 505$$(target): $(generic_config_dir)/$(bits)$(rev).config 506$$(target): $(generic_config_dir)/$(endian).config 507))) 508endef 509 510$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) 511$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) 512 513define describe_generic_defconfig 514$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1))))) 515endef 516 517.PHONY: $(generic_defconfigs) 518$(generic_defconfigs): 519 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 520 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \ 521 grep -Ev '^#' 522 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@ 523 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \ 524 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null 525 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \ 526 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \ 527 "$(origin BOARDS)" $(BOARDS) 528 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 529 530# 531# Prevent generic merge_config rules attempting to merge single fragments 532# 533$(generic_config_dir)/%.config: ; 534 535# 536# Prevent direct use of generic_defconfig, which is intended to be used as the 537# basis of the various ISA-specific targets generated above. 538# 539.PHONY: generic_defconfig 540generic_defconfig: 541 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be" 542 $(Q)echo "used via an ISA-specific target from the following list:" 543 $(Q)echo 544 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done 545 $(Q)echo 546 $(Q)false 547 548# 549# Legacy defconfig compatibility - these targets used to be real defconfigs but 550# now that the boards have been converted to use the generic kernel they are 551# wrappers around the generic rules above. 552# 553legacy_defconfigs += ocelot_defconfig 554ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot 555 556legacy_defconfigs += sead3_defconfig 557sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3 558 559legacy_defconfigs += sead3micro_defconfig 560sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3 561 562legacy_defconfigs += xilfpga_defconfig 563xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga 564 565.PHONY: $(legacy_defconfigs) 566$(legacy_defconfigs): 567 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y) 568