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/boot/tools relocs 17 18KBUILD_DEFCONFIG := 32r2el_defconfig 19 20# 21# Select the object file format to substitute into the linker script. 22# 23ifdef CONFIG_CPU_LITTLE_ENDIAN 2432bit-tool-archpref = mipsel 2564bit-tool-archpref = mips64el 2632bit-bfd = elf32-tradlittlemips 2764bit-bfd = elf64-tradlittlemips 2832bit-emul = elf32ltsmip 2964bit-emul = elf64ltsmip 30else 3132bit-tool-archpref = mips 3264bit-tool-archpref = mips64 3332bit-bfd = elf32-tradbigmips 3464bit-bfd = elf64-tradbigmips 3532bit-emul = elf32btsmip 3664bit-emul = elf64btsmip 37endif 38 39ifdef CONFIG_32BIT 40tool-archpref = $(32bit-tool-archpref) 41UTS_MACHINE := mips 42endif 43ifdef CONFIG_64BIT 44tool-archpref = $(64bit-tool-archpref) 45UTS_MACHINE := mips64 46endif 47 48ifneq ($(SUBARCH),$(ARCH)) 49 ifeq ($(CROSS_COMPILE),) 50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) 51 endif 52endif 53 54ifdef CONFIG_FUNCTION_GRAPH_TRACER 55 ifndef KBUILD_MCOUNT_RA_ADDRESS 56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y) 57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS 58 endif 59 endif 60endif 61cflags-y += $(call cc-option, -mno-check-zero-division) 62 63ifdef CONFIG_32BIT 64ld-emul = $(32bit-emul) 65vmlinux-32 = vmlinux 66vmlinux-64 = vmlinux.64 67 68cflags-y += -mabi=32 69endif 70 71ifdef CONFIG_64BIT 72ld-emul = $(64bit-emul) 73vmlinux-32 = vmlinux.32 74vmlinux-64 = vmlinux 75 76cflags-y += -mabi=64 77endif 78 79all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) 80all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) 81all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz 82 83# 84# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 85# code since it only slows down the whole thing. At some point we might make 86# use of global pointer optimizations but their use of $28 conflicts with 87# the current pointer optimization. 88# 89# The DECStation requires an ECOFF kernel for remote booting, other MIPS 90# machines may also. Since BFD is incredibly buggy with respect to 91# crossformat linking we rely on the elf2ecoff tool for format conversion. 92# 93cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 94cflags-y += -msoft-float 95LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 96KBUILD_AFLAGS_MODULE += -mlong-calls 97KBUILD_CFLAGS_MODULE += -mlong-calls 98 99ifeq ($(CONFIG_RELOCATABLE),y) 100LDFLAGS_vmlinux += --emit-relocs 101endif 102 103# 104# pass -msoft-float to GAS if it supports it. However on newer binutils 105# (specifically newer than 2.24.51.20140728) we then also need to explicitly 106# set ".set hardfloat" in all files which manipulate floating point registers. 107# 108ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) 109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float 110endif 111 112cflags-y += -ffreestanding 113 114# 115# We explicitly add the endianness specifier if needed, this allows 116# to compile kernels with a toolchain for the other endianness. We 117# carefully avoid to add it redundantly because gcc 3.3/3.4 complains 118# when fed the toolchain default! 119# 120# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of 121# 2006-10-10 don't properly change the predefined symbols if -EB / -EL 122# are used, so we kludge that here. A bug has been filed at 123# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. 124# 125# clang doesn't suffer from these issues and our checks against -dumpmachine 126# don't work so well when cross compiling, since without providing --target 127# clang's output will be based upon the build machine. So for clang we simply 128# unconditionally specify -EB or -EL as appropriate. 129# 130ifeq ($(cc-name),clang) 131cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB 132cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL 133else 134undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ 135undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ 136predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ 137predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ 138cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be)) 139cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) 140endif 141 142cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 143 -fno-omit-frame-pointer 144 145# Some distribution-specific toolchains might pass the -fstack-check 146# option during the build, which adds a simple stack-probe at the beginning 147# of every function. This stack probe is to ensure that there is enough 148# stack space, else a SEGV is generated. This is not desirable for MIPS 149# as kernel stacks are small, placed in unmapped virtual memory, and do not 150# grow when overflowed. Especially on SGI IP27 platforms, this check will 151# lead to a NULL pointer dereference in _raw_spin_lock_irq. 152# 153# In disassembly, this stack probe appears at the top of a function as: 154# sd zero,<offset>(sp) 155# Where <offset> is a negative value. 156# 157cflags-y += -fno-stack-check 158 159# 160# CPU-dependent compiler/assembler options for optimization. 161# 162cflags-$(CONFIG_CPU_R3000) += -march=r3000 163cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 164cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 165cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 166cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 167cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 168cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap 169cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap 170cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg 171cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap 172cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap 173cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 174cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 175cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ 176 -Wa,--trap 177cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 178 -Wa,--trap 179cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 180 -Wa,--trap 181cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 182 -Wa,--trap 183cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 184 -Wa,--trap 185cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 186cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 187cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap 188cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 189 -Wa,--trap 190cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 191ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 192cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 193endif 194cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 195cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 196 197cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 198cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 199cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 200 201# For smartmips configurations, there are hundreds of warnings due to ISA overrides 202# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 203# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 204# similar directives in the kernel will spam the build logs with the following warnings: 205# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 206# or 207# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 208# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 209# been fixed properly. 210mips-cflags := $(cflags-y) 211ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 212smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 213cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 214endif 215ifeq ($(CONFIG_CPU_MICROMIPS),y) 216micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 217cflags-$(micromips-ase) += -mmicromips 218endif 219ifeq ($(CONFIG_CPU_HAS_MSA),y) 220toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 221cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 222endif 223toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 224cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 225# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which 226# only warns 227xpa-cflags-y := $(mips-cflags) 228xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings 229toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa) 230cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA 231toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc) 232cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC 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 arch/mips/Kbuild.platforms 255 256ifdef CONFIG_PHYSICAL_START 257load-y = $(CONFIG_PHYSICAL_START) 258endif 259 260# Sign-extend the entry point to 64 bits if retrieved as a 32-bit number. 261entry-y = $(shell $(OBJDUMP) -f vmlinux 2>/dev/null \ 262 | sed -n '/^start address / { \ 263 s/^.* //; \ 264 s/0x\([0-7].......\)$$/0x00000000\1/; \ 265 s/0x\(........\)$$/0xffffffff\1/; p }') 266 267cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 268drivers-$(CONFIG_PCI) += arch/mips/pci/ 269 270# 271# Automatically detect the build format. By default we choose 272# the elf format according to the load address. 273# We can always force a build with a 64-bits symbol format by 274# passing 'KBUILD_SYM32=no' option to the make's command line. 275# 276ifdef CONFIG_64BIT 277 ifndef KBUILD_SYM32 278 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 279 KBUILD_SYM32 = y 280 endif 281 endif 282 283 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 284 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 285 else 286 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 287 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 288 endif 289 endif 290endif 291 292KBUILD_AFLAGS += $(cflags-y) 293KBUILD_CFLAGS += $(cflags-y) 294KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) 295KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 296 297bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 298 VMLINUX_ENTRY_ADDRESS=$(entry-y) \ 299 PLATFORM="$(platform-y)" \ 300 ITS_INPUTS="$(its-y)" 301ifdef CONFIG_32BIT 302bootvars-y += ADDR_BITS=32 303endif 304ifdef CONFIG_64BIT 305bootvars-y += ADDR_BITS=64 306endif 307 308# This is required to get dwarf unwinding tables into .debug_frame 309# instead of .eh_frame so we don't discard them. 310KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 311 312KBUILD_LDFLAGS += -m $(ld-emul) 313 314ifdef CONFIG_MIPS 315CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 316 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 317 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 318endif 319 320OBJCOPYFLAGS += --remove-section=.reginfo 321 322head-y := arch/mips/kernel/head.o 323 324libs-y += arch/mips/lib/ 325libs-y += 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: $(all-y) 389 390# boot 391$(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) $@ 400else 401vmlinuz: FORCE 402 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 403 /bin/false 404endif 405 406 407CLEAN_FILES += vmlinux.32 vmlinux.64 408 409# device-trees 410core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/ 411 412%.dtb %.dtb.S %.dtb.o: | scripts 413 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@ 414 415PHONY += dtbs 416dtbs: scripts 417 $(Q)$(MAKE) $(build)=arch/mips/boot/dts 418 419PHONY += dtbs_install 420dtbs_install: 421 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts 422 423archprepare: 424ifdef CONFIG_MIPS32_N32 425 @$(kecho) ' Checking missing-syscalls for N32' 426 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 427endif 428ifdef CONFIG_MIPS32_O32 429 @$(kecho) ' Checking missing-syscalls for O32' 430 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 431endif 432 433install: 434 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 435ifdef CONFIG_SYS_SUPPORTS_ZBOOT 436 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 437endif 438 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 439 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 440 441archclean: 442 $(Q)$(MAKE) $(clean)=arch/mips/boot 443 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 444 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools 445 $(Q)$(MAKE) $(clean)=arch/mips/lasat 446 447define archhelp 448 echo ' install - install kernel into $(INSTALL_PATH)' 449 echo ' vmlinux.ecoff - ECOFF boot image' 450 echo ' vmlinux.bin - Raw binary boot image' 451 echo ' vmlinux.srec - SREC boot image' 452 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 453 echo ' vmlinuz - Compressed boot(zboot) image' 454 echo ' vmlinuz.ecoff - ECOFF zboot image' 455 echo ' vmlinuz.bin - Raw binary zboot image' 456 echo ' vmlinuz.srec - SREC zboot image' 457 echo ' uImage - U-Boot image' 458 echo ' uImage.bin - U-Boot image (uncompressed)' 459 echo ' uImage.bz2 - U-Boot image (bz2)' 460 echo ' uImage.gz - U-Boot image (gzip)' 461 echo ' uImage.lzma - U-Boot image (lzma)' 462 echo ' uImage.lzo - U-Boot image (lzo)' 463 echo ' uzImage.bin - U-Boot image (self-extracting)' 464 echo ' dtbs - Device-tree blobs for enabled boards' 465 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 466 echo 467 echo ' These will be default as appropriate for a configured platform.' 468 echo 469 echo ' If you are targeting a system supported by generic kernels you may' 470 echo ' configure the kernel for a given architecture target like so:' 471 echo 472 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' 473 echo 474 echo ' Where BOARDS is some subset of the following:' 475 for board in $(sort $(BOARDS)); do echo " $${board}"; done 476 echo 477 echo ' Specifically the following generic default configurations are' 478 echo ' supported:' 479 echo 480 $(foreach cfg,$(generic_defconfigs), 481 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);) 482 echo 483 echo ' The following legacy default configurations have been converted to' 484 echo ' generic and can still be used:' 485 echo 486 $(foreach cfg,$(sort $(legacy_defconfigs)), 487 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);) 488 echo 489 echo ' Otherwise, the following default configurations are available:' 490endef 491 492generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic 493generic_defconfigs := 494 495# 496# If the user generates a generic kernel configuration without specifying a 497# list of boards to include the config fragments for, default to including all 498# available board config fragments. 499# 500ifeq ($(BOARDS),) 501BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) 502endif 503 504# 505# Generic kernel configurations which merge generic_defconfig with the 506# appropriate config fragments from arch/mips/configs/generic/, resulting in 507# the ability to easily configure the kernel for a given architecture, 508# endianness & set of boards without duplicating the needed configuration in 509# hundreds of defconfig files. 510# 511define gen_generic_defconfigs 512$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), 513target := $(bits)$(rev)$(filter el,$(endian))_defconfig 514generic_defconfigs += $$(target) 515$$(target): $(generic_config_dir)/$(bits)$(rev).config 516$$(target): $(generic_config_dir)/$(endian).config 517))) 518endef 519 520$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) 521$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) 522 523define describe_generic_defconfig 524$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1))))) 525endef 526 527.PHONY: $(generic_defconfigs) 528$(generic_defconfigs): 529 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 530 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \ 531 grep -Ev '^#' 532 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@ 533 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \ 534 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null 535 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \ 536 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \ 537 "$(origin BOARDS)" $(BOARDS) 538 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 539 540# 541# Prevent generic merge_config rules attempting to merge single fragments 542# 543$(generic_config_dir)/%.config: ; 544 545# 546# Prevent direct use of generic_defconfig, which is intended to be used as the 547# basis of the various ISA-specific targets generated above. 548# 549.PHONY: generic_defconfig 550generic_defconfig: 551 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be" 552 $(Q)echo "used via an ISA-specific target from the following list:" 553 $(Q)echo 554 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done 555 $(Q)echo 556 $(Q)false 557 558# 559# Legacy defconfig compatibility - these targets used to be real defconfigs but 560# now that the boards have been converted to use the generic kernel they are 561# wrappers around the generic rules above. 562# 563legacy_defconfigs += ocelot_defconfig 564ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot 565 566legacy_defconfigs += sead3_defconfig 567sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3 568 569legacy_defconfigs += sead3micro_defconfig 570sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3 571 572legacy_defconfigs += xilfpga_defconfig 573xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga 574 575.PHONY: $(legacy_defconfigs) 576$(legacy_defconfigs): 577 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y) 578