arch/mips/Makefile

   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
  14 archscripts: scripts_basic
  15         $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
  16 ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
  17         $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
  18 endif
  19         $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
  20
  21 KBUILD_DEFCONFIG := 32r2el_defconfig
  22 KBUILD_DTBS      := dtbs
  23
  24 #
  25 # Select the object file format to substitute into the linker script.
  26 #
  27 ifdef CONFIG_CPU_LITTLE_ENDIAN
  28 32bit-tool-archpref     = mipsel
  29 64bit-tool-archpref     = mips64el
  30 32bit-bfd               = elf32-tradlittlemips
  31 64bit-bfd               = elf64-tradlittlemips
  32 32bit-emul              = elf32ltsmip
  33 64bit-emul              = elf64ltsmip
  34 else
  35 32bit-tool-archpref     = mips
  36 64bit-tool-archpref     = mips64
  37 32bit-bfd               = elf32-tradbigmips
  38 64bit-bfd               = elf64-tradbigmips
  39 32bit-emul              = elf32btsmip
  40 64bit-emul              = elf64btsmip
  41 endif
  42
  43 ifdef CONFIG_32BIT
  44 tool-archpref           = $(32bit-tool-archpref)
  45 UTS_MACHINE             := mips
  46 endif
  47 ifdef CONFIG_64BIT
  48 tool-archpref           = $(64bit-tool-archpref)
  49 UTS_MACHINE             := mips64
  50 endif
  51
  52 ifdef cross_compiling
  53   ifeq ($(CROSS_COMPILE),)
  54     CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
  55   endif
  56 endif
  57
  58 ifdef CONFIG_FUNCTION_GRAPH_TRACER
  59   ifndef KBUILD_MCOUNT_RA_ADDRESS
  60     ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
  61       cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
  62     endif
  63   endif
  64 endif
  65 cflags-y += $(call cc-option, -mno-check-zero-division)
  66
  67 ifdef CONFIG_32BIT
  68 ld-emul                 = $(32bit-emul)
  69 vmlinux-32              = vmlinux
  70 vmlinux-64              = vmlinux.64
  71
  72 cflags-y                += -mabi=32
  73 endif
  74
  75 ifdef CONFIG_64BIT
  76 ld-emul                 = $(64bit-emul)
  77 vmlinux-32              = vmlinux.32
  78 vmlinux-64              = vmlinux
  79
  80 cflags-y                += -mabi=64
  81 endif
  82
  83 all-$(CONFIG_BOOT_ELF32)        := $(vmlinux-32)
  84 all-$(CONFIG_BOOT_ELF64)        := $(vmlinux-64)
  85 all-$(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 $28 conflicts with
  91 # the current pointer optimization.
  92 #
  93 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
  94 # machines may also.  Since BFD is incredibly buggy with respect to
  95 # crossformat linking we rely on the elf2ecoff tool for format conversion.
  96 #
  97 cflags-y                        += -G 0 -mno-abicalls -fno-pic -pipe
  98 cflags-y                        += -msoft-float -Wa,-msoft-float
  99 LDFLAGS_vmlinux                 += -G 0 -static -n -nostdlib
 100 KBUILD_AFLAGS_MODULE            += -mlong-calls
 101 KBUILD_CFLAGS_MODULE            += -mlong-calls
 102
 103 ifeq ($(CONFIG_RELOCATABLE),y)
 104 LDFLAGS_vmlinux                 += --emit-relocs
 105 endif
 106
 107 cflags-y += -ffreestanding
 108
 109 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -EB
 110 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += -EL
 111
 112 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
 113                                    -fno-omit-frame-pointer
 114
 115 # Some distribution-specific toolchains might pass the -fstack-check
 116 # option during the build, which adds a simple stack-probe at the beginning
 117 # of every function.  This stack probe is to ensure that there is enough
 118 # stack space, else a SEGV is generated.  This is not desirable for MIPS
 119 # as kernel stacks are small, placed in unmapped virtual memory, and do not
 120 # grow when overflowed.  Especially on SGI IP27 platforms, this check will
 121 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
 122 #
 123 # In disassembly, this stack probe appears at the top of a function as:
 124 #    sd         zero,<offset>(sp)
 125 # Where <offset> is a negative value.
 126 #
 127 cflags-y += -fno-stack-check
 128
 129 # binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
 130 # supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
 131 # instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
 132 # for a description).
 133 #
 134 # We disable this in order to prevent the assembler meddling with the
 135 # instruction that labels refer to, ie. if we label an ll instruction:
 136 #
 137 # 1: ll v0, 0(a0)
 138 #
 139 # ...then with the assembler fix applied the label may actually point at a sync
 140 # instruction inserted by the assembler, and if we were using the label in an
 141 # exception table the table would no longer contain the address of the ll
 142 # instruction.
 143 #
 144 # Avoid this by explicitly disabling that assembler behaviour.
 145 #
 146 cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
 147
 148 #
 149 # CPU-dependent compiler/assembler options for optimization.
 150 #
 151 cflags-$(CONFIG_CPU_R3000)      += $(call cc-option,-march=r3000,-march=mips1)
 152 cflags-$(CONFIG_CPU_R4300)      += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap
 153 cflags-$(CONFIG_CPU_R4X00)      += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
 154 cflags-$(CONFIG_CPU_TX49XX)     += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
 155 cflags-$(CONFIG_CPU_MIPS32_R1)  += -march=mips32 -Wa,--trap
 156 cflags-$(CONFIG_CPU_MIPS32_R2)  += -march=mips32r2 -Wa,--trap
 157 cflags-$(CONFIG_CPU_MIPS32_R5)  += -march=mips32r5 -Wa,--trap -modd-spreg
 158 cflags-$(CONFIG_CPU_MIPS32_R6)  += -march=mips32r6 -Wa,--trap -modd-spreg
 159 cflags-$(CONFIG_CPU_MIPS64_R1)  += -march=mips64 -Wa,--trap
 160 cflags-$(CONFIG_CPU_MIPS64_R2)  += -march=mips64r2 -Wa,--trap
 161 cflags-$(CONFIG_CPU_MIPS64_R5)  += -march=mips64r5 -Wa,--trap
 162 cflags-$(CONFIG_CPU_MIPS64_R6)  += -march=mips64r6 -Wa,--trap
 163 cflags-$(CONFIG_CPU_P5600)      += $(call cc-option,-march=p5600,-march=mips32r5) \
 164                         -Wa,--trap -modd-spreg
 165 cflags-$(CONFIG_CPU_R5000)      += $(call cc-option,-march=r5000,-march=mips4) \
 166                         -Wa,--trap
 167 cflags-$(CONFIG_CPU_R5500)      += $(call cc-option,-march=r5500,-march=mips4) \
 168                         -Wa,--trap
 169 cflags-$(CONFIG_CPU_NEVADA)     += $(call cc-option,-march=rm5200,-march=mips4) \
 170                         -Wa,--trap
 171 cflags-$(CONFIG_CPU_RM7000)     += $(call cc-option,-march=rm7000,-march=mips4) \
 172                         -Wa,--trap
 173 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-march=sb1,-march=mips64) \
 174                         -Wa,--trap
 175 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mdmx)
 176 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mips3d)
 177 cflags-$(CONFIG_CPU_R10000)     += $(call cc-option,-march=r10000,-march=mips4) \
 178                         -Wa,--trap
 179 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap
 180 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
 181 cflags-$(CONFIG_CPU_BMIPS)      += -march=mips32 -Wa,--trap
 182
 183 cflags-$(CONFIG_CPU_LOONGSON2E) += \
 184                         $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap
 185 cflags-$(CONFIG_CPU_LOONGSON2F) += \
 186                         $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap
 187 # Some -march= flags enable MMI instructions, and GCC complains about that
 188 # support being enabled alongside -msoft-float. Thus explicitly disable MMI.
 189 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
 190 cflags-$(CONFIG_CPU_LOONGSON64) += \
 191                         $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
 192 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
 193
 194 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)  += $(call cc-option,-mfix-r4000,)
 195 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)  += $(call cc-option,-mfix-r4400,)
 196 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)  += $(call cc-option,-mno-daddi,)
 197 ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
 198 cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
 199 cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
 200 endif
 201
 202 #
 203 # Some versions of binutils, not currently mainline as of 2019/02/04, support
 204 # an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
 205 # to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
 206 # description).
 207 #
 208 # We disable this in order to prevent the assembler meddling with the
 209 # instruction that labels refer to, ie. if we label an ll instruction:
 210 #
 211 # 1: ll v0, 0(a0)
 212 #
 213 # ...then with the assembler fix applied the label may actually point at a sync
 214 # instruction inserted by the assembler, and if we were using the label in an
 215 # exception table the table would no longer contain the address of the ll
 216 # instruction.
 217 #
 218 # Avoid this by explicitly disabling that assembler behaviour. If upstream
 219 # binutils does not merge support for the flag then we can revisit & remove
 220 # this later - for now it ensures vendor toolchains don't cause problems.
 221 #
 222 cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
 223
 224 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
 225 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
 226 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
 227 # similar directives in the kernel will spam the build logs with the following warnings:
 228 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
 229 # or
 230 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
 231 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
 232 # been fixed properly.
 233 mips-cflags                             := $(cflags-y)
 234 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
 235 smartmips-ase                           := $(call cc-option-yn,$(mips-cflags) -msmartmips)
 236 cflags-$(smartmips-ase)                 += -msmartmips -Wa,--no-warn
 237 endif
 238 ifeq ($(CONFIG_CPU_MICROMIPS),y)
 239 micromips-ase                           := $(call cc-option-yn,$(mips-cflags) -mmicromips)
 240 cflags-$(micromips-ase)                 += -mmicromips
 241 endif
 242 ifeq ($(CONFIG_CPU_HAS_MSA),y)
 243 toolchain-msa                           := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
 244 cflags-$(toolchain-msa)                 += -DTOOLCHAIN_SUPPORTS_MSA
 245 endif
 246 toolchain-virt                          := $(call cc-option-yn,$(mips-cflags) -mvirt)
 247 cflags-$(toolchain-virt)                += -DTOOLCHAIN_SUPPORTS_VIRT
 248 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
 249 # only warns
 250 xpa-cflags-y                            := $(mips-cflags)
 251 xpa-cflags-$(micromips-ase)             += -mmicromips -Wa$(comma)-fatal-warnings
 252 toolchain-xpa                           := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
 253 cflags-$(toolchain-xpa)                 += -DTOOLCHAIN_SUPPORTS_XPA
 254 toolchain-crc                           := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
 255 cflags-$(toolchain-crc)                 += -DTOOLCHAIN_SUPPORTS_CRC
 256 toolchain-dsp                           := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
 257 cflags-$(toolchain-dsp)                 += -DTOOLCHAIN_SUPPORTS_DSP
 258 toolchain-ginv                          := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
 259 cflags-$(toolchain-ginv)                += -DTOOLCHAIN_SUPPORTS_GINV
 260
 261 #
 262 # Firmware support
 263 #
 264 libs-$(CONFIG_FW_ARC)           += arch/mips/fw/arc/
 265 libs-$(CONFIG_FW_CFE)           += arch/mips/fw/cfe/
 266 libs-$(CONFIG_FW_SNIPROM)       += arch/mips/fw/sni/
 267 libs-y                          += arch/mips/fw/lib/
 268
 269 #
 270 # Kernel compression
 271 #
 272 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 273 COMPRESSION_FNAME               = vmlinuz
 274 else
 275 COMPRESSION_FNAME               = vmlinux
 276 endif
 277
 278 #
 279 # Board-dependent options and extra files
 280 #
 281 include $(srctree)/arch/mips/Kbuild.platforms
 282
 283 ifdef CONFIG_PHYSICAL_START
 284 load-y                                  = $(CONFIG_PHYSICAL_START)
 285 endif
 286
 287 entry-y                         = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
 288 cflags-y                        += -I$(srctree)/arch/mips/include/asm/mach-generic
 289 drivers-$(CONFIG_PCI)           += arch/mips/pci/
 290
 291 #
 292 # Automatically detect the build format. By default we choose
 293 # the elf format according to the load address.
 294 # We can always force a build with a 64-bits symbol format by
 295 # passing 'KBUILD_SYM32=no' option to the make's command line.
 296 #
 297 ifdef CONFIG_64BIT
 298   ifndef KBUILD_SYM32
 299     ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
 300       KBUILD_SYM32 = $(call cc-option-yn, -msym32)
 301     endif
 302   endif
 303
 304   ifeq ($(KBUILD_SYM32), y)
 305     cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
 306   else
 307     ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
 308       $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
 309     endif
 310   endif
 311 endif
 312
 313 # When linking a 32-bit executable the LLVM linker cannot cope with a
 314 # 32-bit load address that has been sign-extended to 64 bits.  Simply
 315 # remove the upper 32 bits then, as it is safe to do so with other
 316 # linkers.
 317 ifdef CONFIG_64BIT
 318         load-ld                 = $(load-y)
 319 else
 320         load-ld                 = $(subst 0xffffffff,0x,$(load-y))
 321 endif
 322
 323 KBUILD_AFLAGS   += $(cflags-y)
 324 KBUILD_CFLAGS   += $(cflags-y)
 325 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
 326 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
 327
 328 bootvars-y      = VMLINUX_LOAD_ADDRESS=$(load-y) \
 329                   LINKER_LOAD_ADDRESS=$(load-ld) \
 330                   VMLINUX_ENTRY_ADDRESS=$(entry-y) \
 331                   PLATFORM="$(platform-y)" \
 332                   ITS_INPUTS="$(its-y)"
 333 ifdef CONFIG_32BIT
 334 bootvars-y      += ADDR_BITS=32
 335 endif
 336 ifdef CONFIG_64BIT
 337 bootvars-y      += ADDR_BITS=64
 338 endif
 339
 340 # This is required to get dwarf unwinding tables into .debug_frame
 341 # instead of .eh_frame so we don't discard them.
 342 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 343
 344 KBUILD_LDFLAGS          += -m $(ld-emul)
 345
 346 ifdef need-compiler
 347 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
 348         grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
 349         sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
 350 endif
 351
 352 OBJCOPYFLAGS            += --remove-section=.reginfo
 353
 354 libs-y                  += arch/mips/lib/
 355 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
 356
 357 drivers-y                       += arch/mips/crypto/
 358
 359 # suspend and hibernation support
 360 drivers-$(CONFIG_PM)    += arch/mips/power/
 361
 362 # boot image targets (arch/mips/boot/)
 363 boot-y                  := vmlinux.bin
 364 boot-y                  += vmlinux.ecoff
 365 boot-y                  += vmlinux.srec
 366 boot-y                  += uImage
 367 boot-y                  += uImage.bin
 368 boot-y                  += uImage.bz2
 369 boot-y                  += uImage.gz
 370 boot-y                  += uImage.lzma
 371 boot-y                  += uImage.lzo
 372 boot-y                  += vmlinux.itb
 373 boot-y                  += vmlinux.gz.itb
 374 boot-y                  += vmlinux.bz2.itb
 375 boot-y                  += vmlinux.lzma.itb
 376 boot-y                  += vmlinux.lzo.itb
 377
 378 # compressed boot image targets (arch/mips/boot/compressed/)
 379 bootz-y                 := vmlinuz
 380 bootz-y                 += vmlinuz.bin
 381 bootz-y                 += vmlinuz.ecoff
 382 bootz-y                 += vmlinuz.srec
 383 bootz-y                 += uzImage.bin
 384 bootz-y                 += vmlinuz.itb
 385
 386 #
 387 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
 388 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
 389 # convert to ECOFF using elf2ecoff.
 390 #
 391 quiet_cmd_32 = OBJCOPY $@
 392         cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 393 vmlinux.32: vmlinux
 394         $(call cmd,32)
 395
 396 #
 397 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
 398 # ELF files from 32-bit files by conversion.
 399 #
 400 quiet_cmd_64 = OBJCOPY $@
 401         cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
 402 vmlinux.64: vmlinux
 403         $(call cmd,64)
 404
 405 all:    $(all-y) $(KBUILD_DTBS)
 406
 407 # boot
 408 $(boot-y): $(vmlinux-32) FORCE
 409         $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
 410                 $(bootvars-y) arch/mips/boot/$@
 411
 412 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 413 # boot/compressed
 414 $(bootz-y): $(vmlinux-32) FORCE
 415         $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
 416                 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
 417 else
 418 vmlinuz: FORCE
 419         @echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
 420         /bin/false
 421 endif
 422
 423
 424 CLEAN_FILES += vmlinux.32 vmlinux.64
 425
 426 # device-trees
 427 core-y += arch/mips/boot/dts/
 428
 429 archprepare:
 430 ifdef CONFIG_MIPS32_N32
 431         @$(kecho) '  Checking missing-syscalls for N32'
 432         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
 433 endif
 434 ifdef CONFIG_MIPS32_O32
 435         @$(kecho) '  Checking missing-syscalls for O32'
 436         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
 437 endif
 438
 439 install:
 440         $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
 441 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 442         $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
 443 endif
 444         $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
 445         $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
 446
 447 archheaders:
 448         $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
 449
 450 define archhelp
 451         echo '  install              - install kernel into $(INSTALL_PATH)'
 452         echo '  vmlinux.ecoff        - ECOFF boot image'
 453         echo '  vmlinux.bin          - Raw binary boot image'
 454         echo '  vmlinux.srec         - SREC boot image'
 455         echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
 456         echo '  vmlinuz              - Compressed boot(zboot) image'
 457         echo '  vmlinuz.ecoff        - ECOFF zboot image'
 458         echo '  vmlinuz.bin          - Raw binary zboot image'
 459         echo '  vmlinuz.srec         - SREC zboot image'
 460         echo '  uImage               - U-Boot image'
 461         echo '  uImage.bin           - U-Boot image (uncompressed)'
 462         echo '  uImage.bz2           - U-Boot image (bz2)'
 463         echo '  uImage.gz            - U-Boot image (gzip)'
 464         echo '  uImage.lzma          - U-Boot image (lzma)'
 465         echo '  uImage.lzo           - U-Boot image (lzo)'
 466         echo '  uzImage.bin          - U-Boot image (self-extracting)'
 467         echo
 468         echo '  These will be default as appropriate for a configured platform.'
 469         echo
 470         echo '  If you are targeting a system supported by generic kernels you may'
 471         echo '  configure the kernel for a given architecture target like so:'
 472         echo
 473         echo '  {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
 474         echo
 475         echo '  Where BOARDS is some subset of the following:'
 476         for board in $(sort $(BOARDS)); do echo "    $${board}"; done
 477         echo
 478         echo '  Specifically the following generic default configurations are'
 479         echo '  supported:'
 480         echo
 481         $(foreach cfg,$(generic_defconfigs),
 482           printf "  %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
 483         echo
 484         echo '  The following legacy default configurations have been converted to'
 485         echo '  generic and can still be used:'
 486         echo
 487         $(foreach cfg,$(sort $(legacy_defconfigs)),
 488           printf "  %-24s - Build $($(cfg)-y)\n" $(cfg);)
 489         echo
 490         echo '  Otherwise, the following default configurations are available:'
 491 endef
 492
 493 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
 494 generic_defconfigs :=
 495
 496 #
 497 # If the user generates a generic kernel configuration without specifying a
 498 # list of boards to include the config fragments for, default to including all
 499 # available board config fragments.
 500 #
 501 ifeq ($(BOARDS),)
 502 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
 503 endif
 504
 505 #
 506 # Generic kernel configurations which merge generic_defconfig with the
 507 # appropriate config fragments from arch/mips/configs/generic/, resulting in
 508 # the ability to easily configure the kernel for a given architecture,
 509 # endianness & set of boards without duplicating the needed configuration in
 510 # hundreds of defconfig files.
 511 #
 512 define gen_generic_defconfigs
 513 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
 514 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
 515 generic_defconfigs += $$(target)
 516 $$(target): $(generic_config_dir)/$(bits)$(rev).config
 517 $$(target): $(generic_config_dir)/$(endian).config
 518 )))
 519 endef
 520
 521 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
 522 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
 523
 524 define describe_generic_defconfig
 525 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
 526 endef
 527
 528 .PHONY: $(generic_defconfigs)
 529 $(generic_defconfigs):
 530         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
 531                 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
 532                 grep -Ev '^#'
 533         $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
 534         $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
 535                 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
 536         $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
 537                 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
 538                 "$(origin BOARDS)" $(BOARDS)
 539         $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
 540
 541 #
 542 # Prevent generic merge_config rules attempting to merge single fragments
 543 #
 544 $(generic_config_dir)/%.config: ;
 545
 546 #
 547 # Prevent direct use of generic_defconfig, which is intended to be used as the
 548 # basis of the various ISA-specific targets generated above.
 549 #
 550 .PHONY: generic_defconfig
 551 generic_defconfig:
 552         $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
 553         $(Q)echo "used via an ISA-specific target from the following list:"
 554         $(Q)echo
 555         $(Q)for cfg in $(generic_defconfigs); do echo "  $${cfg}"; done
 556         $(Q)echo
 557         $(Q)false
 558
 559 #
 560 # Legacy defconfig compatibility - these targets used to be real defconfigs but
 561 # now that the boards have been converted to use the generic kernel they are
 562 # wrappers around the generic rules above.
 563 #
 564 legacy_defconfigs               += ocelot_defconfig
 565 ocelot_defconfig-y              := 32r2el_defconfig BOARDS=ocelot
 566
 567 legacy_defconfigs               += sead3_defconfig
 568 sead3_defconfig-y               := 32r2el_defconfig BOARDS=sead-3
 569
 570 legacy_defconfigs               += sead3micro_defconfig
 571 sead3micro_defconfig-y          := micro32r2el_defconfig BOARDS=sead-3
 572
 573 legacy_defconfigs               += xilfpga_defconfig
 574 xilfpga_defconfig-y             := 32r2el_defconfig BOARDS=xilfpga
 575
 576 legacy_defconfigs               += pistachio_defconfig
 577 pistachio_defconfig-y           := 32r2el_defconfig BOARDS=marduk
 578
 579 .PHONY: $(legacy_defconfigs)
 580 $(legacy_defconfigs):
 581         $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)