Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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. Remember to do have actions
12# for "archclean" cleaning up for this architecture.
13#
14
15archscripts: scripts_basic
16 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
17ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
18 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
19endif
20 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
21
22KBUILD_DEFCONFIG := 32r2el_defconfig
23KBUILD_DTBS := dtbs
24
25#
26# Select the object file format to substitute into the linker script.
27#
28ifdef CONFIG_CPU_LITTLE_ENDIAN
2932bit-tool-archpref = mipsel
3064bit-tool-archpref = mips64el
3132bit-bfd = elf32-tradlittlemips
3264bit-bfd = elf64-tradlittlemips
3332bit-emul = elf32ltsmip
3464bit-emul = elf64ltsmip
35else
3632bit-tool-archpref = mips
3764bit-tool-archpref = mips64
3832bit-bfd = elf32-tradbigmips
3964bit-bfd = elf64-tradbigmips
4032bit-emul = elf32btsmip
4164bit-emul = elf64btsmip
42endif
43
44ifdef CONFIG_32BIT
45tool-archpref = $(32bit-tool-archpref)
46UTS_MACHINE := mips
47endif
48ifdef CONFIG_64BIT
49tool-archpref = $(64bit-tool-archpref)
50UTS_MACHINE := mips64
51endif
52
53ifneq ($(SUBARCH),$(ARCH))
54 ifeq ($(CROSS_COMPILE),)
55 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
56 endif
57endif
58
59ifdef CONFIG_FUNCTION_GRAPH_TRACER
60 ifndef KBUILD_MCOUNT_RA_ADDRESS
61 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
62 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
63 endif
64 endif
65endif
66cflags-y += $(call cc-option, -mno-check-zero-division)
67
68ifdef CONFIG_32BIT
69ld-emul = $(32bit-emul)
70vmlinux-32 = vmlinux
71vmlinux-64 = vmlinux.64
72
73cflags-y += -mabi=32
74endif
75
76ifdef CONFIG_64BIT
77ld-emul = $(64bit-emul)
78vmlinux-32 = vmlinux.32
79vmlinux-64 = vmlinux
80
81cflags-y += -mabi=64
82endif
83
84all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
85all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
86all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
87
88#
89# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
90# code since it only slows down the whole thing. At some point we might make
91# use of global pointer optimizations but their use of $28 conflicts with
92# the current pointer optimization.
93#
94# The DECStation requires an ECOFF kernel for remote booting, other MIPS
95# machines may also. Since BFD is incredibly buggy with respect to
96# crossformat linking we rely on the elf2ecoff tool for format conversion.
97#
98cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
99cflags-y += -msoft-float
100LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
101KBUILD_AFLAGS_MODULE += -mlong-calls
102KBUILD_CFLAGS_MODULE += -mlong-calls
103
104ifeq ($(CONFIG_RELOCATABLE),y)
105LDFLAGS_vmlinux += --emit-relocs
106endif
107
108#
109# pass -msoft-float to GAS if it supports it. However on newer binutils
110# (specifically newer than 2.24.51.20140728) we then also need to explicitly
111# set ".set hardfloat" in all files which manipulate floating point registers.
112#
113ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
114 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
115endif
116
117cflags-y += -ffreestanding
118
119#
120# We explicitly add the endianness specifier if needed, this allows
121# to compile kernels with a toolchain for the other endianness. We
122# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
123# when fed the toolchain default!
124#
125# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
126# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
127# are used, so we kludge that here. A bug has been filed at
128# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
129#
130# clang doesn't suffer from these issues and our checks against -dumpmachine
131# don't work so well when cross compiling, since without providing --target
132# clang's output will be based upon the build machine. So for clang we simply
133# unconditionally specify -EB or -EL as appropriate.
134#
135ifdef CONFIG_CC_IS_CLANG
136cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
137cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
138else
139undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
140undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
141predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
142predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
143cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
144cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
145endif
146
147cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
148 -fno-omit-frame-pointer
149
150# Some distribution-specific toolchains might pass the -fstack-check
151# option during the build, which adds a simple stack-probe at the beginning
152# of every function. This stack probe is to ensure that there is enough
153# stack space, else a SEGV is generated. This is not desirable for MIPS
154# as kernel stacks are small, placed in unmapped virtual memory, and do not
155# grow when overflowed. Especially on SGI IP27 platforms, this check will
156# lead to a NULL pointer dereference in _raw_spin_lock_irq.
157#
158# In disassembly, this stack probe appears at the top of a function as:
159# sd zero,<offset>(sp)
160# Where <offset> is a negative value.
161#
162cflags-y += -fno-stack-check
163
164#
165# CPU-dependent compiler/assembler options for optimization.
166#
167cflags-$(CONFIG_CPU_R3000) += -march=r3000
168cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
169cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
170cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
171cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
172cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
173cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
174cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
175cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
176cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
177cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
178cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
179cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
180 -Wa,--trap
181cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
182 -Wa,--trap
183cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
184 -Wa,--trap
185cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
186 -Wa,--trap
187cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
188cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
189cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
190 -Wa,--trap
191cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
192ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
193cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
194endif
195cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
196cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
197
198cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
199cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
200cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
201
202# For smartmips configurations, there are hundreds of warnings due to ISA overrides
203# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
204# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
205# similar directives in the kernel will spam the build logs with the following warnings:
206# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
207# or
208# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
209# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
210# been fixed properly.
211mips-cflags := $(cflags-y)
212ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
213smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
214cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
215endif
216ifeq ($(CONFIG_CPU_MICROMIPS),y)
217micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
218cflags-$(micromips-ase) += -mmicromips
219endif
220ifeq ($(CONFIG_CPU_HAS_MSA),y)
221toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
222cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
223endif
224toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
225cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
226# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
227# only warns
228xpa-cflags-y := $(mips-cflags)
229xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
230toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
231cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
232toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
233cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
234toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
235cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
236toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
237cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
238
239#
240# Firmware support
241#
242libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
243libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
244libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
245libs-y += arch/mips/fw/lib/
246
247#
248# Kernel compression
249#
250ifdef CONFIG_SYS_SUPPORTS_ZBOOT
251COMPRESSION_FNAME = vmlinuz
252else
253COMPRESSION_FNAME = vmlinux
254endif
255
256#
257# Board-dependent options and extra files
258#
259include arch/mips/Kbuild.platforms
260
261ifdef CONFIG_PHYSICAL_START
262load-y = $(CONFIG_PHYSICAL_START)
263endif
264
265entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
266cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
267drivers-$(CONFIG_PCI) += arch/mips/pci/
268
269#
270# Automatically detect the build format. By default we choose
271# the elf format according to the load address.
272# We can always force a build with a 64-bits symbol format by
273# passing 'KBUILD_SYM32=no' option to the make's command line.
274#
275ifdef CONFIG_64BIT
276 ifndef KBUILD_SYM32
277 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
278 KBUILD_SYM32 = y
279 endif
280 endif
281
282 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
283 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
284 else
285 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
286 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
287 endif
288 endif
289endif
290
291KBUILD_AFLAGS += $(cflags-y)
292KBUILD_CFLAGS += $(cflags-y)
293KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
294KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
295
296bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
297 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
298 PLATFORM="$(platform-y)" \
299 ITS_INPUTS="$(its-y)"
300ifdef CONFIG_32BIT
301bootvars-y += ADDR_BITS=32
302endif
303ifdef CONFIG_64BIT
304bootvars-y += ADDR_BITS=64
305endif
306
307# This is required to get dwarf unwinding tables into .debug_frame
308# instead of .eh_frame so we don't discard them.
309KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
310
311KBUILD_LDFLAGS += -m $(ld-emul)
312
313ifdef CONFIG_MIPS
314CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
315 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
316 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
317endif
318
319OBJCOPYFLAGS += --remove-section=.reginfo
320
321head-y := arch/mips/kernel/head.o
322
323libs-y += arch/mips/lib/
324libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
325
326# See arch/mips/Kbuild for content of core part of the kernel
327core-y += arch/mips/
328
329drivers-y += arch/mips/crypto/
330drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
331
332# suspend and hibernation support
333drivers-$(CONFIG_PM) += arch/mips/power/
334
335# boot image targets (arch/mips/boot/)
336boot-y := vmlinux.bin
337boot-y += vmlinux.ecoff
338boot-y += vmlinux.srec
339ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
340boot-y += uImage
341boot-y += uImage.bin
342boot-y += uImage.bz2
343boot-y += uImage.gz
344boot-y += uImage.lzma
345boot-y += uImage.lzo
346endif
347boot-y += vmlinux.itb
348boot-y += vmlinux.gz.itb
349boot-y += vmlinux.bz2.itb
350boot-y += vmlinux.lzma.itb
351boot-y += vmlinux.lzo.itb
352
353# compressed boot image targets (arch/mips/boot/compressed/)
354bootz-y := vmlinuz
355bootz-y += vmlinuz.bin
356bootz-y += vmlinuz.ecoff
357bootz-y += vmlinuz.srec
358ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
359bootz-y += uzImage.bin
360endif
361
362ifdef CONFIG_LASAT
363rom.bin rom.sw: vmlinux
364 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
365 $(bootvars-y) $@
366endif
367
368#
369# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
370# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
371# convert to ECOFF using elf2ecoff.
372#
373quiet_cmd_32 = OBJCOPY $@
374 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
375vmlinux.32: vmlinux
376 $(call cmd,32)
377
378#
379# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
380# ELF files from 32-bit files by conversion.
381#
382quiet_cmd_64 = OBJCOPY $@
383 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
384vmlinux.64: vmlinux
385 $(call cmd,64)
386
387all: $(all-y) $(KBUILD_DTBS)
388
389# boot
390$(boot-y): $(vmlinux-32) FORCE
391 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
392 $(bootvars-y) arch/mips/boot/$@
393
394ifdef CONFIG_SYS_SUPPORTS_ZBOOT
395# boot/compressed
396$(bootz-y): $(vmlinux-32) FORCE
397 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
398 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
399else
400vmlinuz: FORCE
401 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
402 /bin/false
403endif
404
405
406CLEAN_FILES += vmlinux.32 vmlinux.64
407
408# device-trees
409core-y += arch/mips/boot/dts/
410
411archprepare:
412ifdef CONFIG_MIPS32_N32
413 @$(kecho) ' Checking missing-syscalls for N32'
414 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
415endif
416ifdef CONFIG_MIPS32_O32
417 @$(kecho) ' Checking missing-syscalls for O32'
418 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
419endif
420
421install:
422 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
423ifdef CONFIG_SYS_SUPPORTS_ZBOOT
424 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
425endif
426 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
427 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
428
429archclean:
430 $(Q)$(MAKE) $(clean)=arch/mips/boot
431 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
432 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
433 $(Q)$(MAKE) $(clean)=arch/mips/lasat
434
435archheaders:
436 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
437
438define archhelp
439 echo ' install - install kernel into $(INSTALL_PATH)'
440 echo ' vmlinux.ecoff - ECOFF boot image'
441 echo ' vmlinux.bin - Raw binary boot image'
442 echo ' vmlinux.srec - SREC boot image'
443 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
444 echo ' vmlinuz - Compressed boot(zboot) image'
445 echo ' vmlinuz.ecoff - ECOFF zboot image'
446 echo ' vmlinuz.bin - Raw binary zboot image'
447 echo ' vmlinuz.srec - SREC zboot image'
448 echo ' uImage - U-Boot image'
449 echo ' uImage.bin - U-Boot image (uncompressed)'
450 echo ' uImage.bz2 - U-Boot image (bz2)'
451 echo ' uImage.gz - U-Boot image (gzip)'
452 echo ' uImage.lzma - U-Boot image (lzma)'
453 echo ' uImage.lzo - U-Boot image (lzo)'
454 echo ' uzImage.bin - U-Boot image (self-extracting)'
455 echo
456 echo ' These will be default as appropriate for a configured platform.'
457 echo
458 echo ' If you are targeting a system supported by generic kernels you may'
459 echo ' configure the kernel for a given architecture target like so:'
460 echo
461 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
462 echo
463 echo ' Where BOARDS is some subset of the following:'
464 for board in $(sort $(BOARDS)); do echo " $${board}"; done
465 echo
466 echo ' Specifically the following generic default configurations are'
467 echo ' supported:'
468 echo
469 $(foreach cfg,$(generic_defconfigs),
470 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
471 echo
472 echo ' The following legacy default configurations have been converted to'
473 echo ' generic and can still be used:'
474 echo
475 $(foreach cfg,$(sort $(legacy_defconfigs)),
476 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
477 echo
478 echo ' Otherwise, the following default configurations are available:'
479endef
480
481generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
482generic_defconfigs :=
483
484#
485# If the user generates a generic kernel configuration without specifying a
486# list of boards to include the config fragments for, default to including all
487# available board config fragments.
488#
489ifeq ($(BOARDS),)
490BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
491endif
492
493#
494# Generic kernel configurations which merge generic_defconfig with the
495# appropriate config fragments from arch/mips/configs/generic/, resulting in
496# the ability to easily configure the kernel for a given architecture,
497# endianness & set of boards without duplicating the needed configuration in
498# hundreds of defconfig files.
499#
500define gen_generic_defconfigs
501$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
502target := $(bits)$(rev)$(filter el,$(endian))_defconfig
503generic_defconfigs += $$(target)
504$$(target): $(generic_config_dir)/$(bits)$(rev).config
505$$(target): $(generic_config_dir)/$(endian).config
506)))
507endef
508
509$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
510$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
511
512define describe_generic_defconfig
513$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
514endef
515
516.PHONY: $(generic_defconfigs)
517$(generic_defconfigs):
518 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
519 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
520 grep -Ev '^#'
521 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
522 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
523 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
524 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
525 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
526 "$(origin BOARDS)" $(BOARDS)
527 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
528
529#
530# Prevent generic merge_config rules attempting to merge single fragments
531#
532$(generic_config_dir)/%.config: ;
533
534#
535# Prevent direct use of generic_defconfig, which is intended to be used as the
536# basis of the various ISA-specific targets generated above.
537#
538.PHONY: generic_defconfig
539generic_defconfig:
540 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
541 $(Q)echo "used via an ISA-specific target from the following list:"
542 $(Q)echo
543 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
544 $(Q)echo
545 $(Q)false
546
547#
548# Legacy defconfig compatibility - these targets used to be real defconfigs but
549# now that the boards have been converted to use the generic kernel they are
550# wrappers around the generic rules above.
551#
552legacy_defconfigs += ocelot_defconfig
553ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
554
555legacy_defconfigs += sead3_defconfig
556sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
557
558legacy_defconfigs += sead3micro_defconfig
559sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
560
561legacy_defconfigs += xilfpga_defconfig
562xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
563
564.PHONY: $(legacy_defconfigs)
565$(legacy_defconfigs):
566 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)