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 $28 conflicts with
91# the current pointer optimization.
92#
93# The DECStation requires an ECOFF kernel for remote booting, other MIPS
94# machines may also. Since BFD is incredibly buggy with respect to
95# crossformat linking we rely on the elf2ecoff tool for format conversion.
96#
97cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
98cflags-y += -msoft-float -Wa,-msoft-float
99LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
100KBUILD_AFLAGS_MODULE += -mlong-calls
101KBUILD_CFLAGS_MODULE += -mlong-calls
102
103ifeq ($(CONFIG_RELOCATABLE),y)
104LDFLAGS_vmlinux += --emit-relocs
105endif
106
107cflags-y += -ffreestanding
108
109cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
110cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
111
112cflags-$(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#
127cflags-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#
146cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
147
148#
149# CPU-dependent compiler/assembler options for optimization.
150#
151cflags-$(CONFIG_CPU_R3000) += -march=r3000
152cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
153cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
154cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
155cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
156cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
157cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
158cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
159cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
160cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
161cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
162cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
163cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
164cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
165cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
166 -Wa,--trap
167cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
168 -Wa,--trap
169cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
170 -Wa,--trap
171cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
172 -Wa,--trap
173cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
174cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
175cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
176 -Wa,--trap
177cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
178ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
179cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
180endif
181cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
182cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
183
184cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
185cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
186cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
187
188# For smartmips configurations, there are hundreds of warnings due to ISA overrides
189# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
190# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
191# similar directives in the kernel will spam the build logs with the following warnings:
192# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
193# or
194# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
195# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
196# been fixed properly.
197mips-cflags := $(cflags-y)
198ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
199smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
200cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
201endif
202ifeq ($(CONFIG_CPU_MICROMIPS),y)
203micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
204cflags-$(micromips-ase) += -mmicromips
205endif
206ifeq ($(CONFIG_CPU_HAS_MSA),y)
207toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
208cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
209endif
210toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
211cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
212# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
213# only warns
214xpa-cflags-y := $(mips-cflags)
215xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
216toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
217cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
218toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
219cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
220toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
221cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
222toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
223cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
224
225#
226# Firmware support
227#
228libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
229libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
230libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
231libs-y += arch/mips/fw/lib/
232
233#
234# Kernel compression
235#
236ifdef CONFIG_SYS_SUPPORTS_ZBOOT
237COMPRESSION_FNAME = vmlinuz
238else
239COMPRESSION_FNAME = vmlinux
240endif
241
242#
243# Board-dependent options and extra files
244#
245include $(srctree)/arch/mips/Kbuild.platforms
246
247ifdef CONFIG_PHYSICAL_START
248load-y = $(CONFIG_PHYSICAL_START)
249endif
250
251entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
252cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
253drivers-$(CONFIG_PCI) += arch/mips/pci/
254
255#
256# Automatically detect the build format. By default we choose
257# the elf format according to the load address.
258# We can always force a build with a 64-bits symbol format by
259# passing 'KBUILD_SYM32=no' option to the make's command line.
260#
261ifdef CONFIG_64BIT
262 ifndef KBUILD_SYM32
263 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
264 KBUILD_SYM32 = y
265 endif
266 endif
267
268 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
269 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
270 else
271 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
272 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
273 endif
274 endif
275endif
276
277# When linking a 32-bit executable the LLVM linker cannot cope with a
278# 32-bit load address that has been sign-extended to 64 bits. Simply
279# remove the upper 32 bits then, as it is safe to do so with other
280# linkers.
281ifdef CONFIG_64BIT
282 load-ld = $(load-y)
283else
284 load-ld = $(subst 0xffffffff,0x,$(load-y))
285endif
286
287KBUILD_AFLAGS += $(cflags-y)
288KBUILD_CFLAGS += $(cflags-y)
289KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
290KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
291
292bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
293 LINKER_LOAD_ADDRESS=$(load-ld) \
294 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
295 PLATFORM="$(platform-y)" \
296 ITS_INPUTS="$(its-y)"
297ifdef CONFIG_32BIT
298bootvars-y += ADDR_BITS=32
299endif
300ifdef CONFIG_64BIT
301bootvars-y += ADDR_BITS=64
302endif
303
304# This is required to get dwarf unwinding tables into .debug_frame
305# instead of .eh_frame so we don't discard them.
306KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
307
308KBUILD_LDFLAGS += -m $(ld-emul)
309
310ifdef CONFIG_MIPS
311CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
312 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
313 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
314endif
315
316OBJCOPYFLAGS += --remove-section=.reginfo
317
318libs-y += arch/mips/lib/
319libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
320
321drivers-y += arch/mips/crypto/
322
323# suspend and hibernation support
324drivers-$(CONFIG_PM) += arch/mips/power/
325
326# boot image targets (arch/mips/boot/)
327boot-y := vmlinux.bin
328boot-y += vmlinux.ecoff
329boot-y += vmlinux.srec
330boot-y += uImage
331boot-y += uImage.bin
332boot-y += uImage.bz2
333boot-y += uImage.gz
334boot-y += uImage.lzma
335boot-y += uImage.lzo
336boot-y += vmlinux.itb
337boot-y += vmlinux.gz.itb
338boot-y += vmlinux.bz2.itb
339boot-y += vmlinux.lzma.itb
340boot-y += vmlinux.lzo.itb
341
342# compressed boot image targets (arch/mips/boot/compressed/)
343bootz-y := vmlinuz
344bootz-y += vmlinuz.bin
345bootz-y += vmlinuz.ecoff
346bootz-y += vmlinuz.srec
347bootz-y += uzImage.bin
348bootz-y += vmlinuz.itb
349
350#
351# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
352# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
353# convert to ECOFF using elf2ecoff.
354#
355quiet_cmd_32 = OBJCOPY $@
356 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
357vmlinux.32: vmlinux
358 $(call cmd,32)
359
360#
361# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
362# ELF files from 32-bit files by conversion.
363#
364quiet_cmd_64 = OBJCOPY $@
365 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
366vmlinux.64: vmlinux
367 $(call cmd,64)
368
369all: $(all-y) $(KBUILD_DTBS)
370
371# boot
372$(boot-y): $(vmlinux-32) FORCE
373 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
374 $(bootvars-y) arch/mips/boot/$@
375
376ifdef CONFIG_SYS_SUPPORTS_ZBOOT
377# boot/compressed
378$(bootz-y): $(vmlinux-32) FORCE
379 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
380 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
381else
382vmlinuz: FORCE
383 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
384 /bin/false
385endif
386
387
388CLEAN_FILES += vmlinux.32 vmlinux.64
389
390# device-trees
391core-y += arch/mips/boot/dts/
392
393archprepare:
394ifdef CONFIG_MIPS32_N32
395 @$(kecho) ' Checking missing-syscalls for N32'
396 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
397endif
398ifdef CONFIG_MIPS32_O32
399 @$(kecho) ' Checking missing-syscalls for O32'
400 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
401endif
402
403install:
404 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
405ifdef CONFIG_SYS_SUPPORTS_ZBOOT
406 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
407endif
408 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
409 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
410
411archheaders:
412 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
413
414define archhelp
415 echo ' install - install kernel into $(INSTALL_PATH)'
416 echo ' vmlinux.ecoff - ECOFF boot image'
417 echo ' vmlinux.bin - Raw binary boot image'
418 echo ' vmlinux.srec - SREC boot image'
419 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
420 echo ' vmlinuz - Compressed boot(zboot) image'
421 echo ' vmlinuz.ecoff - ECOFF zboot image'
422 echo ' vmlinuz.bin - Raw binary zboot image'
423 echo ' vmlinuz.srec - SREC zboot image'
424 echo ' uImage - U-Boot image'
425 echo ' uImage.bin - U-Boot image (uncompressed)'
426 echo ' uImage.bz2 - U-Boot image (bz2)'
427 echo ' uImage.gz - U-Boot image (gzip)'
428 echo ' uImage.lzma - U-Boot image (lzma)'
429 echo ' uImage.lzo - U-Boot image (lzo)'
430 echo ' uzImage.bin - U-Boot image (self-extracting)'
431 echo
432 echo ' These will be default as appropriate for a configured platform.'
433 echo
434 echo ' If you are targeting a system supported by generic kernels you may'
435 echo ' configure the kernel for a given architecture target like so:'
436 echo
437 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
438 echo
439 echo ' Where BOARDS is some subset of the following:'
440 for board in $(sort $(BOARDS)); do echo " $${board}"; done
441 echo
442 echo ' Specifically the following generic default configurations are'
443 echo ' supported:'
444 echo
445 $(foreach cfg,$(generic_defconfigs),
446 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
447 echo
448 echo ' The following legacy default configurations have been converted to'
449 echo ' generic and can still be used:'
450 echo
451 $(foreach cfg,$(sort $(legacy_defconfigs)),
452 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
453 echo
454 echo ' Otherwise, the following default configurations are available:'
455endef
456
457generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
458generic_defconfigs :=
459
460#
461# If the user generates a generic kernel configuration without specifying a
462# list of boards to include the config fragments for, default to including all
463# available board config fragments.
464#
465ifeq ($(BOARDS),)
466BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
467endif
468
469#
470# Generic kernel configurations which merge generic_defconfig with the
471# appropriate config fragments from arch/mips/configs/generic/, resulting in
472# the ability to easily configure the kernel for a given architecture,
473# endianness & set of boards without duplicating the needed configuration in
474# hundreds of defconfig files.
475#
476define gen_generic_defconfigs
477$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
478target := $(bits)$(rev)$(filter el,$(endian))_defconfig
479generic_defconfigs += $$(target)
480$$(target): $(generic_config_dir)/$(bits)$(rev).config
481$$(target): $(generic_config_dir)/$(endian).config
482)))
483endef
484
485$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
486$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
487
488define describe_generic_defconfig
489$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
490endef
491
492.PHONY: $(generic_defconfigs)
493$(generic_defconfigs):
494 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
495 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
496 grep -Ev '^#'
497 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
498 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
499 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
500 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
501 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
502 "$(origin BOARDS)" $(BOARDS)
503 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
504
505#
506# Prevent generic merge_config rules attempting to merge single fragments
507#
508$(generic_config_dir)/%.config: ;
509
510#
511# Prevent direct use of generic_defconfig, which is intended to be used as the
512# basis of the various ISA-specific targets generated above.
513#
514.PHONY: generic_defconfig
515generic_defconfig:
516 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
517 $(Q)echo "used via an ISA-specific target from the following list:"
518 $(Q)echo
519 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
520 $(Q)echo
521 $(Q)false
522
523#
524# Legacy defconfig compatibility - these targets used to be real defconfigs but
525# now that the boards have been converted to use the generic kernel they are
526# wrappers around the generic rules above.
527#
528legacy_defconfigs += ocelot_defconfig
529ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
530
531legacy_defconfigs += sead3_defconfig
532sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
533
534legacy_defconfigs += sead3micro_defconfig
535sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
536
537legacy_defconfigs += xilfpga_defconfig
538xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
539
540legacy_defconfigs += pistachio_defconfig
541pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
542
543.PHONY: $(legacy_defconfigs)
544$(legacy_defconfigs):
545 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)