xref: /openbmc/linux/arch/mips/Makefile (revision 2cf1c348)
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#
256include $(srctree)/arch/mips/Kbuild.platforms
257
258ifdef CONFIG_PHYSICAL_START
259load-y					= $(CONFIG_PHYSICAL_START)
260endif
261
262entry-y				= $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
263cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
264drivers-$(CONFIG_PCI)		+= arch/mips/pci/
265
266#
267# Automatically detect the build format. By default we choose
268# the elf format according to the load address.
269# We can always force a build with a 64-bits symbol format by
270# passing 'KBUILD_SYM32=no' option to the make's command line.
271#
272ifdef CONFIG_64BIT
273  ifndef KBUILD_SYM32
274    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
275      KBUILD_SYM32 = y
276    endif
277  endif
278
279  ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
280    cflags-y += -msym32 -DKBUILD_64BIT_SYM32
281  else
282    ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
283      $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
284    endif
285  endif
286endif
287
288# When linking a 32-bit executable the LLVM linker cannot cope with a
289# 32-bit load address that has been sign-extended to 64 bits.  Simply
290# remove the upper 32 bits then, as it is safe to do so with other
291# linkers.
292ifdef CONFIG_64BIT
293	load-ld			= $(load-y)
294else
295	load-ld			= $(subst 0xffffffff,0x,$(load-y))
296endif
297
298KBUILD_AFLAGS	+= $(cflags-y)
299KBUILD_CFLAGS	+= $(cflags-y)
300KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
301KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
302
303bootvars-y	= VMLINUX_LOAD_ADDRESS=$(load-y) \
304		  LINKER_LOAD_ADDRESS=$(load-ld) \
305		  VMLINUX_ENTRY_ADDRESS=$(entry-y) \
306		  PLATFORM="$(platform-y)" \
307		  ITS_INPUTS="$(its-y)"
308ifdef CONFIG_32BIT
309bootvars-y	+= ADDR_BITS=32
310endif
311ifdef CONFIG_64BIT
312bootvars-y	+= ADDR_BITS=64
313endif
314
315# This is required to get dwarf unwinding tables into .debug_frame
316# instead of .eh_frame so we don't discard them.
317KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
318
319KBUILD_LDFLAGS		+= -m $(ld-emul)
320
321ifdef CONFIG_MIPS
322CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
323	egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
324	sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
325endif
326
327OBJCOPYFLAGS		+= --remove-section=.reginfo
328
329head-y := arch/mips/kernel/head.o
330
331libs-y			+= arch/mips/lib/
332libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
333
334drivers-y			+= arch/mips/crypto/
335
336# suspend and hibernation support
337drivers-$(CONFIG_PM)	+= arch/mips/power/
338
339# boot image targets (arch/mips/boot/)
340boot-y			:= vmlinux.bin
341boot-y			+= vmlinux.ecoff
342boot-y			+= vmlinux.srec
343ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
344boot-y			+= uImage
345boot-y			+= uImage.bin
346boot-y			+= uImage.bz2
347boot-y			+= uImage.gz
348boot-y			+= uImage.lzma
349boot-y			+= uImage.lzo
350endif
351boot-y			+= vmlinux.itb
352boot-y			+= vmlinux.gz.itb
353boot-y			+= vmlinux.bz2.itb
354boot-y			+= vmlinux.lzma.itb
355boot-y			+= vmlinux.lzo.itb
356
357# compressed boot image targets (arch/mips/boot/compressed/)
358bootz-y			:= vmlinuz
359bootz-y			+= vmlinuz.bin
360bootz-y			+= vmlinuz.ecoff
361bootz-y			+= vmlinuz.srec
362ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
363bootz-y			+= uzImage.bin
364endif
365bootz-y			+= vmlinuz.itb
366
367#
368# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
369# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
370# convert to ECOFF using elf2ecoff.
371#
372quiet_cmd_32 = OBJCOPY $@
373	cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
374vmlinux.32: vmlinux
375	$(call cmd,32)
376
377#
378# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
379# ELF files from 32-bit files by conversion.
380#
381quiet_cmd_64 = OBJCOPY $@
382	cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
383vmlinux.64: vmlinux
384	$(call cmd,64)
385
386all:	$(all-y) $(KBUILD_DTBS)
387
388# boot
389$(boot-y): $(vmlinux-32) FORCE
390	$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
391		$(bootvars-y) arch/mips/boot/$@
392
393ifdef CONFIG_SYS_SUPPORTS_ZBOOT
394# boot/compressed
395$(bootz-y): $(vmlinux-32) FORCE
396	$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
397		$(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
398else
399vmlinuz: FORCE
400	@echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
401	/bin/false
402endif
403
404
405CLEAN_FILES += vmlinux.32 vmlinux.64
406
407# device-trees
408core-y += arch/mips/boot/dts/
409
410archprepare:
411ifdef CONFIG_MIPS32_N32
412	@$(kecho) '  Checking missing-syscalls for N32'
413	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
414endif
415ifdef CONFIG_MIPS32_O32
416	@$(kecho) '  Checking missing-syscalls for O32'
417	$(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
418endif
419
420install:
421	$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
422ifdef CONFIG_SYS_SUPPORTS_ZBOOT
423	$(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
424endif
425	$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
426	$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
427
428archheaders:
429	$(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
430
431define archhelp
432	echo '  install              - install kernel into $(INSTALL_PATH)'
433	echo '  vmlinux.ecoff        - ECOFF boot image'
434	echo '  vmlinux.bin          - Raw binary boot image'
435	echo '  vmlinux.srec         - SREC boot image'
436	echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
437	echo '  vmlinuz              - Compressed boot(zboot) image'
438	echo '  vmlinuz.ecoff        - ECOFF zboot image'
439	echo '  vmlinuz.bin          - Raw binary zboot image'
440	echo '  vmlinuz.srec         - SREC zboot image'
441	echo '  uImage               - U-Boot image'
442	echo '  uImage.bin           - U-Boot image (uncompressed)'
443	echo '  uImage.bz2           - U-Boot image (bz2)'
444	echo '  uImage.gz            - U-Boot image (gzip)'
445	echo '  uImage.lzma          - U-Boot image (lzma)'
446	echo '  uImage.lzo           - U-Boot image (lzo)'
447	echo '  uzImage.bin          - U-Boot image (self-extracting)'
448	echo
449	echo '  These will be default as appropriate for a configured platform.'
450	echo
451	echo '  If you are targeting a system supported by generic kernels you may'
452	echo '  configure the kernel for a given architecture target like so:'
453	echo
454	echo '  {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
455	echo
456	echo '  Where BOARDS is some subset of the following:'
457	for board in $(sort $(BOARDS)); do echo "    $${board}"; done
458	echo
459	echo '  Specifically the following generic default configurations are'
460	echo '  supported:'
461	echo
462	$(foreach cfg,$(generic_defconfigs),
463	  printf "  %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
464	echo
465	echo '  The following legacy default configurations have been converted to'
466	echo '  generic and can still be used:'
467	echo
468	$(foreach cfg,$(sort $(legacy_defconfigs)),
469	  printf "  %-24s - Build $($(cfg)-y)\n" $(cfg);)
470	echo
471	echo '  Otherwise, the following default configurations are available:'
472endef
473
474generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
475generic_defconfigs :=
476
477#
478# If the user generates a generic kernel configuration without specifying a
479# list of boards to include the config fragments for, default to including all
480# available board config fragments.
481#
482ifeq ($(BOARDS),)
483BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
484endif
485
486#
487# Generic kernel configurations which merge generic_defconfig with the
488# appropriate config fragments from arch/mips/configs/generic/, resulting in
489# the ability to easily configure the kernel for a given architecture,
490# endianness & set of boards without duplicating the needed configuration in
491# hundreds of defconfig files.
492#
493define gen_generic_defconfigs
494$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
495target := $(bits)$(rev)$(filter el,$(endian))_defconfig
496generic_defconfigs += $$(target)
497$$(target): $(generic_config_dir)/$(bits)$(rev).config
498$$(target): $(generic_config_dir)/$(endian).config
499)))
500endef
501
502$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
503$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
504
505define describe_generic_defconfig
506$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
507endef
508
509.PHONY: $(generic_defconfigs)
510$(generic_defconfigs):
511	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
512		-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
513		grep -Ev '^#'
514	$(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
515	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
516		KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
517	$(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
518		$(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
519		"$(origin BOARDS)" $(BOARDS)
520	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
521
522#
523# Prevent generic merge_config rules attempting to merge single fragments
524#
525$(generic_config_dir)/%.config: ;
526
527#
528# Prevent direct use of generic_defconfig, which is intended to be used as the
529# basis of the various ISA-specific targets generated above.
530#
531.PHONY: generic_defconfig
532generic_defconfig:
533	$(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
534	$(Q)echo "used via an ISA-specific target from the following list:"
535	$(Q)echo
536	$(Q)for cfg in $(generic_defconfigs); do echo "  $${cfg}"; done
537	$(Q)echo
538	$(Q)false
539
540#
541# Legacy defconfig compatibility - these targets used to be real defconfigs but
542# now that the boards have been converted to use the generic kernel they are
543# wrappers around the generic rules above.
544#
545legacy_defconfigs		+= ocelot_defconfig
546ocelot_defconfig-y		:= 32r2el_defconfig BOARDS=ocelot
547
548legacy_defconfigs		+= sead3_defconfig
549sead3_defconfig-y		:= 32r2el_defconfig BOARDS=sead-3
550
551legacy_defconfigs		+= sead3micro_defconfig
552sead3micro_defconfig-y		:= micro32r2el_defconfig BOARDS=sead-3
553
554legacy_defconfigs		+= xilfpga_defconfig
555xilfpga_defconfig-y		:= 32r2el_defconfig BOARDS=xilfpga
556
557legacy_defconfigs		+= pistachio_defconfig
558pistachio_defconfig-y		:= 32r2el_defconfig BOARDS=marduk
559
560.PHONY: $(legacy_defconfigs)
561$(legacy_defconfigs):
562	$(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
563