xref: /openbmc/linux/arch/mips/Makefile (revision c0c74acb)
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 := ip22_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#
125undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
126undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
127predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
128predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
129cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
130cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
131
132cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
133				   -fno-omit-frame-pointer
134
135# Some distribution-specific toolchains might pass the -fstack-check
136# option during the build, which adds a simple stack-probe at the beginning
137# of every function.  This stack probe is to ensure that there is enough
138# stack space, else a SEGV is generated.  This is not desirable for MIPS
139# as kernel stacks are small, placed in unmapped virtual memory, and do not
140# grow when overflowed.  Especially on SGI IP27 platforms, this check will
141# lead to a NULL pointer dereference in _raw_spin_lock_irq.
142#
143# In disassembly, this stack probe appears at the top of a function as:
144#    sd		zero,<offset>(sp)
145# Where <offset> is a negative value.
146#
147cflags-y += -fno-stack-check
148
149#
150# CPU-dependent compiler/assembler options for optimization.
151#
152cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
153cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
154cflags-$(CONFIG_CPU_R6000)	+= -march=r6000 -Wa,--trap
155cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
156cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
157cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
158cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
159cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
160			-Wa,-mips32 -Wa,--trap
161cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
162			-Wa,-mips32r2 -Wa,--trap
163cflags-$(CONFIG_CPU_MIPS32_R6)	+= -march=mips32r6 -Wa,--trap
164cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
165			-Wa,-mips64 -Wa,--trap
166cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
167			-Wa,-mips64r2 -Wa,--trap
168cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
169cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
170cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
171			-Wa,--trap
172cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
173			-Wa,--trap
174cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
175			-Wa,--trap
176cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
177			-Wa,--trap
178cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
179			-Wa,--trap
180cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mdmx)
181cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mips3d)
182cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
183cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
184			-Wa,--trap
185cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
186ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
187cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
188endif
189cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
190cflags-$(CONFIG_CPU_BMIPS)	+= -march=mips32 -Wa,-mips32 -Wa,--trap
191
192cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)	+= $(call cc-option,-mfix-r4000,)
193cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)	+= $(call cc-option,-mfix-r4400,)
194cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)	+= $(call cc-option,-mno-daddi,)
195
196# For smartmips configurations, there are hundreds of warnings due to ISA overrides
197# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
198# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
199# similar directives in the kernel will spam the build logs with the following warnings:
200# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
201# or
202# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
203# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
204# been fixed properly.
205mips-cflags				:= $(cflags-y)
206ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
207smartmips-ase				:= $(call cc-option-yn,$(mips-cflags) -msmartmips)
208cflags-$(smartmips-ase)			+= -msmartmips -Wa,--no-warn
209endif
210ifeq ($(CONFIG_CPU_MICROMIPS),y)
211micromips-ase				:= $(call cc-option-yn,$(mips-cflags) -mmicromips)
212cflags-$(micromips-ase)			+= -mmicromips
213endif
214ifeq ($(CONFIG_CPU_HAS_MSA),y)
215toolchain-msa				:= $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
216cflags-$(toolchain-msa)			+= -DTOOLCHAIN_SUPPORTS_MSA
217endif
218toolchain-virt				:= $(call cc-option-yn,$(mips-cflags) -mvirt)
219cflags-$(toolchain-virt)		+= -DTOOLCHAIN_SUPPORTS_VIRT
220
221#
222# Firmware support
223#
224libs-$(CONFIG_FW_ARC)		+= arch/mips/fw/arc/
225libs-$(CONFIG_FW_CFE)		+= arch/mips/fw/cfe/
226libs-$(CONFIG_FW_SNIPROM)	+= arch/mips/fw/sni/
227libs-y				+= arch/mips/fw/lib/
228
229#
230# Kernel compression
231#
232ifdef SYS_SUPPORTS_ZBOOT
233COMPRESSION_FNAME		= vmlinuz
234else
235COMPRESSION_FNAME		= vmlinux
236endif
237
238#
239# Board-dependent options and extra files
240#
241include arch/mips/Kbuild.platforms
242
243ifdef CONFIG_PHYSICAL_START
244load-y					= $(CONFIG_PHYSICAL_START)
245endif
246entry-y				= 0x$(shell $(NM) vmlinux 2>/dev/null \
247					| grep "\bkernel_entry\b" | cut -f1 -d \ )
248
249cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
250drivers-$(CONFIG_PCI)		+= arch/mips/pci/
251
252#
253# Automatically detect the build format. By default we choose
254# the elf format according to the load address.
255# We can always force a build with a 64-bits symbol format by
256# passing 'KBUILD_SYM32=no' option to the make's command line.
257#
258ifdef CONFIG_64BIT
259  ifndef KBUILD_SYM32
260    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
261      KBUILD_SYM32 = y
262    endif
263  endif
264
265  ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
266    cflags-y += -msym32 -DKBUILD_64BIT_SYM32
267  else
268    ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
269      $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
270    endif
271  endif
272endif
273
274KBUILD_AFLAGS	+= $(cflags-y)
275KBUILD_CFLAGS	+= $(cflags-y)
276KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
277KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
278
279bootvars-y	= VMLINUX_LOAD_ADDRESS=$(load-y) \
280		  VMLINUX_ENTRY_ADDRESS=$(entry-y) \
281		  PLATFORM="$(platform-y)"
282ifdef CONFIG_32BIT
283bootvars-y	+= ADDR_BITS=32
284endif
285ifdef CONFIG_64BIT
286bootvars-y	+= ADDR_BITS=64
287endif
288
289LDFLAGS			+= -m $(ld-emul)
290
291ifdef CONFIG_MIPS
292CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
293	egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
294	sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
295ifdef CONFIG_64BIT
296CHECKFLAGS		+= -m64
297endif
298endif
299
300OBJCOPYFLAGS		+= --remove-section=.reginfo
301
302head-y := arch/mips/kernel/head.o
303
304libs-y			+= arch/mips/lib/
305libs-y			+= arch/mips/math-emu/
306
307# See arch/mips/Kbuild for content of core part of the kernel
308core-y += arch/mips/
309
310drivers-$(CONFIG_OPROFILE)	+= arch/mips/oprofile/
311
312# suspend and hibernation support
313drivers-$(CONFIG_PM)	+= arch/mips/power/
314
315# boot image targets (arch/mips/boot/)
316boot-y			:= vmlinux.bin
317boot-y			+= vmlinux.ecoff
318boot-y			+= vmlinux.srec
319ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
320boot-y			+= uImage
321boot-y			+= uImage.bin
322boot-y			+= uImage.bz2
323boot-y			+= uImage.gz
324boot-y			+= uImage.lzma
325boot-y			+= uImage.lzo
326endif
327boot-y			+= vmlinux.itb
328boot-y			+= vmlinux.gz.itb
329boot-y			+= vmlinux.bz2.itb
330boot-y			+= vmlinux.lzma.itb
331boot-y			+= vmlinux.lzo.itb
332
333# compressed boot image targets (arch/mips/boot/compressed/)
334bootz-y			:= vmlinuz
335bootz-y			+= vmlinuz.bin
336bootz-y			+= vmlinuz.ecoff
337bootz-y			+= vmlinuz.srec
338ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
339bootz-y			+= uzImage.bin
340endif
341
342ifdef CONFIG_LASAT
343rom.bin rom.sw: vmlinux
344	$(Q)$(MAKE) $(build)=arch/mips/lasat/image \
345		$(bootvars-y) $@
346endif
347
348#
349# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
350# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
351# convert to ECOFF using elf2ecoff.
352#
353quiet_cmd_32 = OBJCOPY $@
354	cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
355vmlinux.32: vmlinux
356	$(call cmd,32)
357
358#
359# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
360# ELF files from 32-bit files by conversion.
361#
362quiet_cmd_64 = OBJCOPY $@
363	cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
364vmlinux.64: vmlinux
365	$(call cmd,64)
366
367all:	$(all-y)
368
369# boot
370$(boot-y): $(vmlinux-32) FORCE
371	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
372		$(bootvars-y) arch/mips/boot/$@
373
374ifdef CONFIG_SYS_SUPPORTS_ZBOOT
375# boot/compressed
376$(bootz-y): $(vmlinux-32) FORCE
377	$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
378		$(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
379else
380vmlinuz: FORCE
381	@echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
382	/bin/false
383endif
384
385
386CLEAN_FILES += vmlinux.32 vmlinux.64
387
388# device-trees
389core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
390
391%.dtb %.dtb.S %.dtb.o: | scripts
392	$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
393
394PHONY += dtbs
395dtbs: scripts
396	$(Q)$(MAKE) $(build)=arch/mips/boot/dts
397
398PHONY += dtbs_install
399dtbs_install:
400	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
401
402archprepare:
403ifdef CONFIG_MIPS32_N32
404	@$(kecho) '  Checking missing-syscalls for N32'
405	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
406endif
407ifdef CONFIG_MIPS32_O32
408	@$(kecho) '  Checking missing-syscalls for O32'
409	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
410endif
411
412install:
413	$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
414ifdef CONFIG_SYS_SUPPORTS_ZBOOT
415	$(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
416endif
417	$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
418	$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
419
420archclean:
421	$(Q)$(MAKE) $(clean)=arch/mips/boot
422	$(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
423	$(Q)$(MAKE) $(clean)=arch/mips/boot/tools
424	$(Q)$(MAKE) $(clean)=arch/mips/lasat
425
426define archhelp
427	echo '  install              - install kernel into $(INSTALL_PATH)'
428	echo '  vmlinux.ecoff        - ECOFF boot image'
429	echo '  vmlinux.bin          - Raw binary boot image'
430	echo '  vmlinux.srec         - SREC boot image'
431	echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
432	echo '  vmlinuz              - Compressed boot(zboot) image'
433	echo '  vmlinuz.ecoff        - ECOFF zboot image'
434	echo '  vmlinuz.bin          - Raw binary zboot image'
435	echo '  vmlinuz.srec         - SREC zboot image'
436	echo '  uImage               - U-Boot image'
437	echo '  uImage.bin           - U-Boot image (uncompressed)'
438	echo '  uImage.bz2           - U-Boot image (bz2)'
439	echo '  uImage.gz            - U-Boot image (gzip)'
440	echo '  uImage.lzma          - U-Boot image (lzma)'
441	echo '  uImage.lzo           - U-Boot image (lzo)'
442	echo '  uzImage.bin          - U-Boot image (self-extracting)'
443	echo '  dtbs                 - Device-tree blobs for enabled boards'
444	echo '  dtbs_install         - Install dtbs to $(INSTALL_DTBS_PATH)'
445	echo
446	echo '  These will be default as appropriate for a configured platform.'
447	echo
448	echo '  If you are targeting a system supported by generic kernels you may'
449	echo '  configure the kernel for a given architecture target like so:'
450	echo
451	echo '  {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
452	echo
453	echo '  Otherwise, the following default configurations are available:'
454endef
455
456generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
457generic_defconfigs :=
458
459#
460# If the user generates a generic kernel configuration without specifying a
461# list of boards to include the config fragments for, default to including all
462# available board config fragments.
463#
464ifeq ($(BOARDS),)
465BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
466endif
467
468#
469# Generic kernel configurations which merge generic_defconfig with the
470# appropriate config fragments from arch/mips/configs/generic/, resulting in
471# the ability to easily configure the kernel for a given architecture,
472# endianness & set of boards without duplicating the needed configuration in
473# hundreds of defconfig files.
474#
475define gen_generic_defconfigs
476$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
477target := $(bits)$(rev)$(filter el,$(endian))_defconfig
478generic_defconfigs += $$(target)
479$$(target): $(generic_config_dir)/$(bits)$(rev).config
480$$(target): $(generic_config_dir)/$(endian).config
481)))
482endef
483
484$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
485$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
486
487.PHONY: $(generic_defconfigs)
488$(generic_defconfigs):
489	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
490		-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
491		$(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
492	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
493
494#
495# Prevent generic merge_config rules attempting to merge single fragments
496#
497$(generic_config_dir)/%.config: ;
498
499#
500# Legacy defconfig compatibility - these targets used to be real defconfigs but
501# now that the boards have been converted to use the generic kernel they are
502# wrappers around the generic rules above.
503#
504.PHONY: sead3_defconfig
505sead3_defconfig:
506	$(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=sead-3
507
508.PHONY: sead3micro_defconfig
509sead3micro_defconfig:
510	$(Q)$(MAKE) -f $(srctree)/Makefile micro32r2el_defconfig BOARDS=sead-3
511