x86/unwinder: Handle stack overflows more gracefully
[linux/fpc-iii.git] / arch / mips / Makefile
bloba96d97a806c9906e826ae8a1086be7eb7a8ff65f
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.
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
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.
15 archscripts: scripts_basic
16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
18 KBUILD_DEFCONFIG := ip22_defconfig
21 # Select the object file format to substitute into the linker script.
23 ifdef CONFIG_CPU_LITTLE_ENDIAN
24 32bit-tool-archpref = mipsel
25 64bit-tool-archpref = mips64el
26 32bit-bfd = elf32-tradlittlemips
27 64bit-bfd = elf64-tradlittlemips
28 32bit-emul = elf32ltsmip
29 64bit-emul = elf64ltsmip
30 else
31 32bit-tool-archpref = mips
32 64bit-tool-archpref = mips64
33 32bit-bfd = elf32-tradbigmips
34 64bit-bfd = elf64-tradbigmips
35 32bit-emul = elf32btsmip
36 64bit-emul = elf64btsmip
37 endif
39 ifdef CONFIG_32BIT
40 tool-archpref = $(32bit-tool-archpref)
41 UTS_MACHINE := mips
42 endif
43 ifdef CONFIG_64BIT
44 tool-archpref = $(64bit-tool-archpref)
45 UTS_MACHINE := mips64
46 endif
48 ifneq ($(SUBARCH),$(ARCH))
49 ifeq ($(CROSS_COMPILE),)
50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
51 endif
52 endif
54 ifdef CONFIG_FUNCTION_GRAPH_TRACER
55 ifndef KBUILD_MCOUNT_RA_ADDRESS
56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
58 endif
59 endif
60 endif
61 cflags-y += $(call cc-option, -mno-check-zero-division)
63 ifdef CONFIG_32BIT
64 ld-emul = $(32bit-emul)
65 vmlinux-32 = vmlinux
66 vmlinux-64 = vmlinux.64
68 cflags-y += -mabi=32
69 endif
71 ifdef CONFIG_64BIT
72 ld-emul = $(64bit-emul)
73 vmlinux-32 = vmlinux.32
74 vmlinux-64 = vmlinux
76 cflags-y += -mabi=64
77 endif
79 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
80 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
81 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
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 $28 conflicts with
87 # the current pointer optimization.
89 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
90 # machines may also. Since BFD is incredibly buggy with respect to
91 # crossformat linking we rely on the elf2ecoff tool for format conversion.
93 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
94 cflags-y += -msoft-float
95 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
96 KBUILD_AFLAGS_MODULE += -mlong-calls
97 KBUILD_CFLAGS_MODULE += -mlong-calls
99 ifeq ($(CONFIG_RELOCATABLE),y)
100 LDFLAGS_vmlinux += --emit-relocs
101 endif
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.
108 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
110 endif
112 cflags-y += -ffreestanding
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!
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.
125 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
126 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
127 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
128 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
129 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
130 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
132 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
133 -fno-omit-frame-pointer
135 # Some distribution-specific toolchains might pass the -fstack-check
136 # option during the build, which adds a simple stack-probe at the beginning
137 # of every function. This stack probe is to ensure that there is enough
138 # stack space, else a SEGV is generated. This is not desirable for MIPS
139 # as kernel stacks are small, placed in unmapped virtual memory, and do not
140 # grow when overflowed. Especially on SGI IP27 platforms, this check will
141 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
143 # In disassembly, this stack probe appears at the top of a function as:
144 # sd zero,<offset>(sp)
145 # Where <offset> is a negative value.
147 cflags-y += -fno-stack-check
150 # CPU-dependent compiler/assembler options for optimization.
152 cflags-$(CONFIG_CPU_R3000) += -march=r3000
153 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
154 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
155 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
156 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
157 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
158 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
159 -Wa,-mips32 -Wa,--trap
160 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
161 -Wa,-mips32r2 -Wa,--trap
162 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
163 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
164 -Wa,-mips64 -Wa,--trap
165 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
166 -Wa,-mips64r2 -Wa,--trap
167 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
168 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
169 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
170 -Wa,--trap
171 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
172 -Wa,--trap
173 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
174 -Wa,--trap
175 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
176 -Wa,--trap
177 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
178 -Wa,--trap
179 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
180 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
181 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
182 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
183 -Wa,--trap
184 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
185 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
186 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
187 endif
188 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
189 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
191 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
192 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
193 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
195 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
196 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
197 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
198 # similar directives in the kernel will spam the build logs with the following warnings:
199 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
200 # or
201 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
202 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
203 # been fixed properly.
204 mips-cflags := $(cflags-y)
205 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
206 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
207 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
208 endif
209 ifeq ($(CONFIG_CPU_MICROMIPS),y)
210 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
211 cflags-$(micromips-ase) += -mmicromips
212 endif
213 ifeq ($(CONFIG_CPU_HAS_MSA),y)
214 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
215 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
216 endif
217 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
218 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
221 # Firmware support
223 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
224 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
225 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
226 libs-y += arch/mips/fw/lib/
229 # Kernel compression
231 ifdef SYS_SUPPORTS_ZBOOT
232 COMPRESSION_FNAME = vmlinuz
233 else
234 COMPRESSION_FNAME = vmlinux
235 endif
238 # Board-dependent options and extra files
240 include arch/mips/Kbuild.platforms
242 ifdef CONFIG_PHYSICAL_START
243 load-y = $(CONFIG_PHYSICAL_START)
244 endif
246 entry-noisa-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
247 | grep "\bkernel_entry\b" | cut -f1 -d \ )
248 ifdef CONFIG_CPU_MICROMIPS
250 # Set the ISA bit, since the kernel_entry symbol in the ELF will have it
251 # clear which would lead to images containing addresses which bootloaders may
252 # jump to as MIPS32 code.
254 entry-y = $(patsubst %0,%1,$(patsubst %2,%3,$(patsubst %4,%5, \
255 $(patsubst %6,%7,$(patsubst %8,%9,$(patsubst %a,%b, \
256 $(patsubst %c,%d,$(patsubst %e,%f,$(entry-noisa-y)))))))))
257 else
258 entry-y = $(entry-noisa-y)
259 endif
261 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
262 drivers-$(CONFIG_PCI) += arch/mips/pci/
265 # Automatically detect the build format. By default we choose
266 # the elf format according to the load address.
267 # We can always force a build with a 64-bits symbol format by
268 # passing 'KBUILD_SYM32=no' option to the make's command line.
270 ifdef CONFIG_64BIT
271 ifndef KBUILD_SYM32
272 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
273 KBUILD_SYM32 = y
274 endif
275 endif
277 ifeq ($(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
284 endif
286 KBUILD_AFLAGS += $(cflags-y)
287 KBUILD_CFLAGS += $(cflags-y)
288 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
289 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
291 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
292 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
293 PLATFORM="$(platform-y)" \
294 ITS_INPUTS="$(its-y)"
295 ifdef CONFIG_32BIT
296 bootvars-y += ADDR_BITS=32
297 endif
298 ifdef CONFIG_64BIT
299 bootvars-y += ADDR_BITS=64
300 endif
302 # This is required to get dwarf unwinding tables into .debug_frame
303 # instead of .eh_frame so we don't discard them.
304 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
306 LDFLAGS += -m $(ld-emul)
308 ifdef CONFIG_MIPS
309 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
310 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
311 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
312 ifdef CONFIG_64BIT
313 CHECKFLAGS += -m64
314 endif
315 endif
317 OBJCOPYFLAGS += --remove-section=.reginfo
319 head-y := arch/mips/kernel/head.o
321 libs-y += arch/mips/lib/
322 libs-y += arch/mips/math-emu/
324 # See arch/mips/Kbuild for content of core part of the kernel
325 core-y += arch/mips/
327 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
329 # suspend and hibernation support
330 drivers-$(CONFIG_PM) += arch/mips/power/
332 # boot image targets (arch/mips/boot/)
333 boot-y := vmlinux.bin
334 boot-y += vmlinux.ecoff
335 boot-y += vmlinux.srec
336 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
337 boot-y += uImage
338 boot-y += uImage.bin
339 boot-y += uImage.bz2
340 boot-y += uImage.gz
341 boot-y += uImage.lzma
342 boot-y += uImage.lzo
343 endif
344 boot-y += vmlinux.itb
345 boot-y += vmlinux.gz.itb
346 boot-y += vmlinux.bz2.itb
347 boot-y += vmlinux.lzma.itb
348 boot-y += vmlinux.lzo.itb
350 # compressed boot image targets (arch/mips/boot/compressed/)
351 bootz-y := vmlinuz
352 bootz-y += vmlinuz.bin
353 bootz-y += vmlinuz.ecoff
354 bootz-y += vmlinuz.srec
355 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
356 bootz-y += uzImage.bin
357 endif
359 ifdef CONFIG_LASAT
360 rom.bin rom.sw: vmlinux
361 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
362 $(bootvars-y) $@
363 endif
366 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
367 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
368 # convert to ECOFF using elf2ecoff.
370 quiet_cmd_32 = OBJCOPY $@
371 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
372 vmlinux.32: vmlinux
373 $(call cmd,32)
376 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
377 # ELF files from 32-bit files by conversion.
379 quiet_cmd_64 = OBJCOPY $@
380 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
381 vmlinux.64: vmlinux
382 $(call cmd,64)
384 all: $(all-y)
386 # boot
387 $(boot-y): $(vmlinux-32) FORCE
388 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
389 $(bootvars-y) arch/mips/boot/$@
391 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
392 # boot/compressed
393 $(bootz-y): $(vmlinux-32) FORCE
394 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
395 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
396 else
397 vmlinuz: FORCE
398 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
399 /bin/false
400 endif
403 CLEAN_FILES += vmlinux.32 vmlinux.64
405 # device-trees
406 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
408 %.dtb %.dtb.S %.dtb.o: | scripts
409 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
411 PHONY += dtbs
412 dtbs: scripts
413 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
415 PHONY += dtbs_install
416 dtbs_install:
417 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
419 archprepare:
420 ifdef CONFIG_MIPS32_N32
421 @$(kecho) ' Checking missing-syscalls for N32'
422 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
423 endif
424 ifdef CONFIG_MIPS32_O32
425 @$(kecho) ' Checking missing-syscalls for O32'
426 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
427 endif
429 install:
430 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
431 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
432 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
433 endif
434 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
435 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
437 archclean:
438 $(Q)$(MAKE) $(clean)=arch/mips/boot
439 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
440 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
441 $(Q)$(MAKE) $(clean)=arch/mips/lasat
443 define 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 ' dtbs - Device-tree blobs for enabled boards'
461 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
462 echo
463 echo ' These will be default as appropriate for a configured platform.'
464 echo
465 echo ' If you are targeting a system supported by generic kernels you may'
466 echo ' configure the kernel for a given architecture target like so:'
467 echo
468 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
469 echo
470 echo ' Otherwise, the following default configurations are available:'
471 endef
473 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
474 generic_defconfigs :=
477 # If the user generates a generic kernel configuration without specifying a
478 # list of boards to include the config fragments for, default to including all
479 # available board config fragments.
481 ifeq ($(BOARDS),)
482 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
483 endif
486 # Generic kernel configurations which merge generic_defconfig with the
487 # appropriate config fragments from arch/mips/configs/generic/, resulting in
488 # the ability to easily configure the kernel for a given architecture,
489 # endianness & set of boards without duplicating the needed configuration in
490 # hundreds of defconfig files.
492 define gen_generic_defconfigs
493 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
494 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
495 generic_defconfigs += $$(target)
496 $$(target): $(generic_config_dir)/$(bits)$(rev).config
497 $$(target): $(generic_config_dir)/$(endian).config
499 endef
501 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
502 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
504 .PHONY: $(generic_defconfigs)
505 $(generic_defconfigs):
506 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
507 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
508 grep -Ev '^#'
509 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
510 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
511 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
512 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
513 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
514 "$(origin BOARDS)" $(BOARDS)
515 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
518 # Prevent generic merge_config rules attempting to merge single fragments
520 $(generic_config_dir)/%.config: ;
523 # Prevent direct use of generic_defconfig, which is intended to be used as the
524 # basis of the various ISA-specific targets generated above.
526 .PHONY: generic_defconfig
527 generic_defconfig:
528 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
529 $(Q)echo "used via an ISA-specific target from the following list:"
530 $(Q)echo
531 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
532 $(Q)echo
533 $(Q)false
536 # Legacy defconfig compatibility - these targets used to be real defconfigs but
537 # now that the boards have been converted to use the generic kernel they are
538 # wrappers around the generic rules above.
540 .PHONY: sead3_defconfig
541 sead3_defconfig:
542 $(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=sead-3
544 .PHONY: sead3micro_defconfig
545 sead3micro_defconfig:
546 $(Q)$(MAKE) -f $(srctree)/Makefile micro32r2el_defconfig BOARDS=sead-3