tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
14archscripts: scripts_basic
15 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
16ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
17 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
18endif
19 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
20
21KBUILD_DEFCONFIG := 32r2el_defconfig
22KBUILD_DTBS := dtbs
23
24#
25# Select the object file format to substitute into the linker script.
26#
27ifdef CONFIG_CPU_LITTLE_ENDIAN
2832bit-tool-archpref = mipsel
2964bit-tool-archpref = mips64el
3032bit-bfd = elf32-tradlittlemips
3164bit-bfd = elf64-tradlittlemips
3232bit-emul = elf32ltsmip
3364bit-emul = elf64ltsmip
34else
3532bit-tool-archpref = mips
3664bit-tool-archpref = mips64
3732bit-bfd = elf32-tradbigmips
3864bit-bfd = elf64-tradbigmips
3932bit-emul = elf32btsmip
4064bit-emul = elf64btsmip
41endif
42
43ifdef CONFIG_32BIT
44tool-archpref = $(32bit-tool-archpref)
45UTS_MACHINE := mips
46endif
47ifdef CONFIG_64BIT
48tool-archpref = $(64bit-tool-archpref)
49UTS_MACHINE := mips64
50endif
51
52ifdef cross_compiling
53 ifeq ($(CROSS_COMPILE),)
54 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
55 endif
56endif
57
58ifdef CONFIG_FUNCTION_GRAPH_TRACER
59 ifndef KBUILD_MCOUNT_RA_ADDRESS
60 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
61 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
62 endif
63 endif
64endif
65cflags-y += $(call cc-option, -mno-check-zero-division)
66
67ifdef CONFIG_32BIT
68ld-emul = $(32bit-emul)
69vmlinux-32 = vmlinux
70vmlinux-64 = vmlinux.64
71
72cflags-y += -mabi=32
73endif
74
75ifdef CONFIG_64BIT
76ld-emul = $(64bit-emul)
77vmlinux-32 = vmlinux.32
78vmlinux-64 = vmlinux
79
80cflags-y += -mabi=64
81endif
82
83all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
84all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
85all-$(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 $28 conflicts with
91# the current pointer optimization.
92#
93# The DECStation requires an ECOFF kernel for remote booting, other MIPS
94# machines may also. Since BFD is incredibly buggy with respect to
95# crossformat linking we rely on the elf2ecoff tool for format conversion.
96#
97cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
98cflags-y += -msoft-float
99LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
100KBUILD_AFLAGS_MODULE += -mlong-calls
101KBUILD_CFLAGS_MODULE += -mlong-calls
102
103ifeq ($(CONFIG_RELOCATABLE),y)
104LDFLAGS_vmlinux += --emit-relocs
105endif
106
107#
108# pass -msoft-float to GAS if it supports it. However on newer binutils
109# (specifically newer than 2.24.51.20140728) we then also need to explicitly
110# set ".set hardfloat" in all files which manipulate floating point registers.
111#
112ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
113 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
114endif
115
116cflags-y += -ffreestanding
117
118cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
119cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
120
121cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
122 -fno-omit-frame-pointer
123
124# Some distribution-specific toolchains might pass the -fstack-check
125# option during the build, which adds a simple stack-probe at the beginning
126# of every function. This stack probe is to ensure that there is enough
127# stack space, else a SEGV is generated. This is not desirable for MIPS
128# as kernel stacks are small, placed in unmapped virtual memory, and do not
129# grow when overflowed. Especially on SGI IP27 platforms, this check will
130# lead to a NULL pointer dereference in _raw_spin_lock_irq.
131#
132# In disassembly, this stack probe appears at the top of a function as:
133# sd zero,<offset>(sp)
134# Where <offset> is a negative value.
135#
136cflags-y += -fno-stack-check
137
138# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
139# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
140# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
141# for a description).
142#
143# We disable this in order to prevent the assembler meddling with the
144# instruction that labels refer to, ie. if we label an ll instruction:
145#
146# 1: ll v0, 0(a0)
147#
148# ...then with the assembler fix applied the label may actually point at a sync
149# instruction inserted by the assembler, and if we were using the label in an
150# exception table the table would no longer contain the address of the ll
151# instruction.
152#
153# Avoid this by explicitly disabling that assembler behaviour.
154#
155cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
156
157#
158# CPU-dependent compiler/assembler options for optimization.
159#
160cflags-$(CONFIG_CPU_R3000) += -march=r3000
161cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
162cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
163cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
164cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
165cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
166cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
167cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
168cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
169cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
170cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
171cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
172cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
173cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
174cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
175cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
176cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
177 -Wa,--trap
178cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
179 -Wa,--trap
180cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
181 -Wa,--trap
182cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
183 -Wa,--trap
184cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
185cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
186cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
187 -Wa,--trap
188cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
189ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
190cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
191endif
192cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
193cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
194
195cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
196cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
197cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
198
199# For smartmips configurations, there are hundreds of warnings due to ISA overrides
200# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
201# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
202# similar directives in the kernel will spam the build logs with the following warnings:
203# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
204# or
205# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
206# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
207# been fixed properly.
208mips-cflags := $(cflags-y)
209ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
210smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
211cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
212endif
213ifeq ($(CONFIG_CPU_MICROMIPS),y)
214micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
215cflags-$(micromips-ase) += -mmicromips
216endif
217ifeq ($(CONFIG_CPU_HAS_MSA),y)
218toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
219cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
220endif
221toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
222cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
223# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
224# only warns
225xpa-cflags-y := $(mips-cflags)
226xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
227toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
228cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
229toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
230cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
231toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
232cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
233toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
234cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
235
236#
237# Firmware support
238#
239libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
240libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
241libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
242libs-y += arch/mips/fw/lib/
243
244#
245# Kernel compression
246#
247ifdef CONFIG_SYS_SUPPORTS_ZBOOT
248COMPRESSION_FNAME = vmlinuz
249else
250COMPRESSION_FNAME = vmlinux
251endif
252
253#
254# Board-dependent options and extra files
255#
256ifdef need-compiler
257include $(srctree)/arch/mips/Kbuild.platforms
258endif
259
260ifdef CONFIG_PHYSICAL_START
261load-y = $(CONFIG_PHYSICAL_START)
262endif
263
264entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
265cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
266drivers-$(CONFIG_PCI) += arch/mips/pci/
267
268#
269# Automatically detect the build format. By default we choose
270# the elf format according to the load address.
271# We can always force a build with a 64-bits symbol format by
272# passing 'KBUILD_SYM32=no' option to the make's command line.
273#
274ifdef CONFIG_64BIT
275 ifndef KBUILD_SYM32
276 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
277 KBUILD_SYM32 = y
278 endif
279 endif
280
281 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
282 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
283 else
284 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
285 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
286 endif
287 endif
288endif
289
290# When linking a 32-bit executable the LLVM linker cannot cope with a
291# 32-bit load address that has been sign-extended to 64 bits. Simply
292# remove the upper 32 bits then, as it is safe to do so with other
293# linkers.
294ifdef CONFIG_64BIT
295 load-ld = $(load-y)
296else
297 load-ld = $(subst 0xffffffff,0x,$(load-y))
298endif
299
300KBUILD_AFLAGS += $(cflags-y)
301KBUILD_CFLAGS += $(cflags-y)
302KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
303KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
304
305bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
306 LINKER_LOAD_ADDRESS=$(load-ld) \
307 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
308 PLATFORM="$(platform-y)" \
309 ITS_INPUTS="$(its-y)"
310ifdef CONFIG_32BIT
311bootvars-y += ADDR_BITS=32
312endif
313ifdef CONFIG_64BIT
314bootvars-y += ADDR_BITS=64
315endif
316
317# This is required to get dwarf unwinding tables into .debug_frame
318# instead of .eh_frame so we don't discard them.
319KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
320
321KBUILD_LDFLAGS += -m $(ld-emul)
322
323ifdef CONFIG_MIPS
324CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
325 egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
326 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
327endif
328
329OBJCOPYFLAGS += --remove-section=.reginfo
330
331head-y := arch/mips/kernel/head.o
332
333libs-y += arch/mips/lib/
334libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
335
336drivers-y += arch/mips/crypto/
337
338# suspend and hibernation support
339drivers-$(CONFIG_PM) += arch/mips/power/
340
341# boot image targets (arch/mips/boot/)
342boot-y := vmlinux.bin
343boot-y += vmlinux.ecoff
344boot-y += vmlinux.srec
345ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
346boot-y += uImage
347boot-y += uImage.bin
348boot-y += uImage.bz2
349boot-y += uImage.gz
350boot-y += uImage.lzma
351boot-y += uImage.lzo
352endif
353boot-y += vmlinux.itb
354boot-y += vmlinux.gz.itb
355boot-y += vmlinux.bz2.itb
356boot-y += vmlinux.lzma.itb
357boot-y += vmlinux.lzo.itb
358
359# compressed boot image targets (arch/mips/boot/compressed/)
360bootz-y := vmlinuz
361bootz-y += vmlinuz.bin
362bootz-y += vmlinuz.ecoff
363bootz-y += vmlinuz.srec
364ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
365bootz-y += uzImage.bin
366endif
367bootz-y += vmlinuz.itb
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) arch/mips/boot/$@
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
430archheaders:
431 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
432
433define archhelp
434 echo ' install - install kernel into $(INSTALL_PATH)'
435 echo ' vmlinux.ecoff - ECOFF boot image'
436 echo ' vmlinux.bin - Raw binary boot image'
437 echo ' vmlinux.srec - SREC boot image'
438 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
439 echo ' vmlinuz - Compressed boot(zboot) image'
440 echo ' vmlinuz.ecoff - ECOFF zboot image'
441 echo ' vmlinuz.bin - Raw binary zboot image'
442 echo ' vmlinuz.srec - SREC zboot image'
443 echo ' uImage - U-Boot image'
444 echo ' uImage.bin - U-Boot image (uncompressed)'
445 echo ' uImage.bz2 - U-Boot image (bz2)'
446 echo ' uImage.gz - U-Boot image (gzip)'
447 echo ' uImage.lzma - U-Boot image (lzma)'
448 echo ' uImage.lzo - U-Boot image (lzo)'
449 echo ' uzImage.bin - U-Boot image (self-extracting)'
450 echo
451 echo ' These will be default as appropriate for a configured platform.'
452 echo
453 echo ' If you are targeting a system supported by generic kernels you may'
454 echo ' configure the kernel for a given architecture target like so:'
455 echo
456 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
457 echo
458 echo ' Where BOARDS is some subset of the following:'
459 for board in $(sort $(BOARDS)); do echo " $${board}"; done
460 echo
461 echo ' Specifically the following generic default configurations are'
462 echo ' supported:'
463 echo
464 $(foreach cfg,$(generic_defconfigs),
465 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
466 echo
467 echo ' The following legacy default configurations have been converted to'
468 echo ' generic and can still be used:'
469 echo
470 $(foreach cfg,$(sort $(legacy_defconfigs)),
471 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
472 echo
473 echo ' Otherwise, the following default configurations are available:'
474endef
475
476generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
477generic_defconfigs :=
478
479#
480# If the user generates a generic kernel configuration without specifying a
481# list of boards to include the config fragments for, default to including all
482# available board config fragments.
483#
484ifeq ($(BOARDS),)
485BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
486endif
487
488#
489# Generic kernel configurations which merge generic_defconfig with the
490# appropriate config fragments from arch/mips/configs/generic/, resulting in
491# the ability to easily configure the kernel for a given architecture,
492# endianness & set of boards without duplicating the needed configuration in
493# hundreds of defconfig files.
494#
495define gen_generic_defconfigs
496$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
497target := $(bits)$(rev)$(filter el,$(endian))_defconfig
498generic_defconfigs += $$(target)
499$$(target): $(generic_config_dir)/$(bits)$(rev).config
500$$(target): $(generic_config_dir)/$(endian).config
501)))
502endef
503
504$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
505$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
506
507define describe_generic_defconfig
508$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
509endef
510
511.PHONY: $(generic_defconfigs)
512$(generic_defconfigs):
513 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
514 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
515 grep -Ev '^#'
516 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
517 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
518 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
519 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
520 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
521 "$(origin BOARDS)" $(BOARDS)
522 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
523
524#
525# Prevent generic merge_config rules attempting to merge single fragments
526#
527$(generic_config_dir)/%.config: ;
528
529#
530# Prevent direct use of generic_defconfig, which is intended to be used as the
531# basis of the various ISA-specific targets generated above.
532#
533.PHONY: generic_defconfig
534generic_defconfig:
535 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
536 $(Q)echo "used via an ISA-specific target from the following list:"
537 $(Q)echo
538 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
539 $(Q)echo
540 $(Q)false
541
542#
543# Legacy defconfig compatibility - these targets used to be real defconfigs but
544# now that the boards have been converted to use the generic kernel they are
545# wrappers around the generic rules above.
546#
547legacy_defconfigs += ocelot_defconfig
548ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
549
550legacy_defconfigs += sead3_defconfig
551sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
552
553legacy_defconfigs += sead3micro_defconfig
554sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
555
556legacy_defconfigs += xilfpga_defconfig
557xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
558
559legacy_defconfigs += pistachio_defconfig
560pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
561
562.PHONY: $(legacy_defconfigs)
563$(legacy_defconfigs):
564 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)