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/boot/tools relocs
17
18KBUILD_DEFCONFIG := 32r2el_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#
125# clang doesn't suffer from these issues and our checks against -dumpmachine
126# don't work so well when cross compiling, since without providing --target
127# clang's output will be based upon the build machine. So for clang we simply
128# unconditionally specify -EB or -EL as appropriate.
129#
130ifeq ($(cc-name),clang)
131cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
132cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
133else
134undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
135undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
136predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
137predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
138cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
139cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
140endif
141
142cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
143 -fno-omit-frame-pointer
144
145# Some distribution-specific toolchains might pass the -fstack-check
146# option during the build, which adds a simple stack-probe at the beginning
147# of every function. This stack probe is to ensure that there is enough
148# stack space, else a SEGV is generated. This is not desirable for MIPS
149# as kernel stacks are small, placed in unmapped virtual memory, and do not
150# grow when overflowed. Especially on SGI IP27 platforms, this check will
151# lead to a NULL pointer dereference in _raw_spin_lock_irq.
152#
153# In disassembly, this stack probe appears at the top of a function as:
154# sd zero,<offset>(sp)
155# Where <offset> is a negative value.
156#
157cflags-y += -fno-stack-check
158
159#
160# CPU-dependent compiler/assembler options for optimization.
161#
162cflags-$(CONFIG_CPU_R3000) += -march=r3000
163cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
164cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
165cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
166cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
167cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
168cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
169cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
170cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
171cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
172cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
173cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
174cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
175cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
176 -Wa,--trap
177cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
178 -Wa,--trap
179cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
180 -Wa,--trap
181cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
182 -Wa,--trap
183cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
184 -Wa,--trap
185cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
186cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
187cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
188cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
189 -Wa,--trap
190cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
191ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
192cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
193endif
194cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
195cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
196
197cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
198cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
199cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
200
201# For smartmips configurations, there are hundreds of warnings due to ISA overrides
202# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
203# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
204# similar directives in the kernel will spam the build logs with the following warnings:
205# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
206# or
207# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
208# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
209# been fixed properly.
210mips-cflags := $(cflags-y)
211ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
212smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
213cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
214endif
215ifeq ($(CONFIG_CPU_MICROMIPS),y)
216micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
217cflags-$(micromips-ase) += -mmicromips
218endif
219ifeq ($(CONFIG_CPU_HAS_MSA),y)
220toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
221cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
222endif
223toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
224cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
225# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
226# only warns
227xpa-cflags-y := $(mips-cflags)
228xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
229toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
230cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
231toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
232cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
233
234#
235# Firmware support
236#
237libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
238libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
239libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
240libs-y += arch/mips/fw/lib/
241
242#
243# Kernel compression
244#
245ifdef CONFIG_SYS_SUPPORTS_ZBOOT
246COMPRESSION_FNAME = vmlinuz
247else
248COMPRESSION_FNAME = vmlinux
249endif
250
251#
252# Board-dependent options and extra files
253#
254include arch/mips/Kbuild.platforms
255
256ifdef CONFIG_PHYSICAL_START
257load-y = $(CONFIG_PHYSICAL_START)
258endif
259
260# Sign-extend the entry point to 64 bits if retrieved as a 32-bit number.
261entry-y = $(shell $(OBJDUMP) -f vmlinux 2>/dev/null \
262 | sed -n '/^start address / { \
263 s/^.* //; \
264 s/0x\([0-7].......\)$$/0x00000000\1/; \
265 s/0x\(........\)$$/0xffffffff\1/; p }')
266
267cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
268drivers-$(CONFIG_PCI) += arch/mips/pci/
269
270#
271# Automatically detect the build format. By default we choose
272# the elf format according to the load address.
273# We can always force a build with a 64-bits symbol format by
274# passing 'KBUILD_SYM32=no' option to the make's command line.
275#
276ifdef CONFIG_64BIT
277 ifndef KBUILD_SYM32
278 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
279 KBUILD_SYM32 = y
280 endif
281 endif
282
283 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
284 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
285 else
286 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
287 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
288 endif
289 endif
290endif
291
292KBUILD_AFLAGS += $(cflags-y)
293KBUILD_CFLAGS += $(cflags-y)
294KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
295KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
296
297bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
298 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
299 PLATFORM="$(platform-y)" \
300 ITS_INPUTS="$(its-y)"
301ifdef CONFIG_32BIT
302bootvars-y += ADDR_BITS=32
303endif
304ifdef CONFIG_64BIT
305bootvars-y += ADDR_BITS=64
306endif
307
308# This is required to get dwarf unwinding tables into .debug_frame
309# instead of .eh_frame so we don't discard them.
310KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
311
312KBUILD_LDFLAGS += -m $(ld-emul)
313
314ifdef CONFIG_MIPS
315CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
316 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
317 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
318endif
319
320OBJCOPYFLAGS += --remove-section=.reginfo
321
322head-y := arch/mips/kernel/head.o
323
324libs-y += arch/mips/lib/
325libs-y += arch/mips/math-emu/
326
327# See arch/mips/Kbuild for content of core part of the kernel
328core-y += arch/mips/
329
330drivers-$(CONFIG_MIPS_CRC_SUPPORT) += arch/mips/crypto/
331drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
332
333# suspend and hibernation support
334drivers-$(CONFIG_PM) += arch/mips/power/
335
336# boot image targets (arch/mips/boot/)
337boot-y := vmlinux.bin
338boot-y += vmlinux.ecoff
339boot-y += vmlinux.srec
340ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
341boot-y += uImage
342boot-y += uImage.bin
343boot-y += uImage.bz2
344boot-y += uImage.gz
345boot-y += uImage.lzma
346boot-y += uImage.lzo
347endif
348boot-y += vmlinux.itb
349boot-y += vmlinux.gz.itb
350boot-y += vmlinux.bz2.itb
351boot-y += vmlinux.lzma.itb
352boot-y += vmlinux.lzo.itb
353
354# compressed boot image targets (arch/mips/boot/compressed/)
355bootz-y := vmlinuz
356bootz-y += vmlinuz.bin
357bootz-y += vmlinuz.ecoff
358bootz-y += vmlinuz.srec
359ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
360bootz-y += uzImage.bin
361endif
362
363ifdef CONFIG_LASAT
364rom.bin rom.sw: vmlinux
365 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
366 $(bootvars-y) $@
367endif
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: $(all-y)
389
390# boot
391$(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) $@
400else
401vmlinuz: FORCE
402 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
403 /bin/false
404endif
405
406
407CLEAN_FILES += vmlinux.32 vmlinux.64
408
409# device-trees
410core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
411
412%.dtb %.dtb.S %.dtb.o: | scripts
413 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
414
415PHONY += dtbs
416dtbs: scripts
417 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
418
419PHONY += dtbs_install
420dtbs_install:
421 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
422
423archprepare:
424ifdef CONFIG_MIPS32_N32
425 @$(kecho) ' Checking missing-syscalls for N32'
426 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
427endif
428ifdef CONFIG_MIPS32_O32
429 @$(kecho) ' Checking missing-syscalls for O32'
430 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
431endif
432
433install:
434 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
435ifdef CONFIG_SYS_SUPPORTS_ZBOOT
436 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
437endif
438 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
439 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
440
441archclean:
442 $(Q)$(MAKE) $(clean)=arch/mips/boot
443 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
444 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
445 $(Q)$(MAKE) $(clean)=arch/mips/lasat
446
447define archhelp
448 echo ' install - install kernel into $(INSTALL_PATH)'
449 echo ' vmlinux.ecoff - ECOFF boot image'
450 echo ' vmlinux.bin - Raw binary boot image'
451 echo ' vmlinux.srec - SREC boot image'
452 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
453 echo ' vmlinuz - Compressed boot(zboot) image'
454 echo ' vmlinuz.ecoff - ECOFF zboot image'
455 echo ' vmlinuz.bin - Raw binary zboot image'
456 echo ' vmlinuz.srec - SREC zboot image'
457 echo ' uImage - U-Boot image'
458 echo ' uImage.bin - U-Boot image (uncompressed)'
459 echo ' uImage.bz2 - U-Boot image (bz2)'
460 echo ' uImage.gz - U-Boot image (gzip)'
461 echo ' uImage.lzma - U-Boot image (lzma)'
462 echo ' uImage.lzo - U-Boot image (lzo)'
463 echo ' uzImage.bin - U-Boot image (self-extracting)'
464 echo ' dtbs - Device-tree blobs for enabled boards'
465 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
466 echo
467 echo ' These will be default as appropriate for a configured platform.'
468 echo
469 echo ' If you are targeting a system supported by generic kernels you may'
470 echo ' configure the kernel for a given architecture target like so:'
471 echo
472 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
473 echo
474 echo ' Where BOARDS is some subset of the following:'
475 for board in $(sort $(BOARDS)); do echo " $${board}"; done
476 echo
477 echo ' Specifically the following generic default configurations are'
478 echo ' supported:'
479 echo
480 $(foreach cfg,$(generic_defconfigs),
481 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
482 echo
483 echo ' The following legacy default configurations have been converted to'
484 echo ' generic and can still be used:'
485 echo
486 $(foreach cfg,$(sort $(legacy_defconfigs)),
487 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
488 echo
489 echo ' Otherwise, the following default configurations are available:'
490endef
491
492generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
493generic_defconfigs :=
494
495#
496# If the user generates a generic kernel configuration without specifying a
497# list of boards to include the config fragments for, default to including all
498# available board config fragments.
499#
500ifeq ($(BOARDS),)
501BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
502endif
503
504#
505# Generic kernel configurations which merge generic_defconfig with the
506# appropriate config fragments from arch/mips/configs/generic/, resulting in
507# the ability to easily configure the kernel for a given architecture,
508# endianness & set of boards without duplicating the needed configuration in
509# hundreds of defconfig files.
510#
511define gen_generic_defconfigs
512$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
513target := $(bits)$(rev)$(filter el,$(endian))_defconfig
514generic_defconfigs += $$(target)
515$$(target): $(generic_config_dir)/$(bits)$(rev).config
516$$(target): $(generic_config_dir)/$(endian).config
517)))
518endef
519
520$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
521$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
522
523define describe_generic_defconfig
524$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
525endef
526
527.PHONY: $(generic_defconfigs)
528$(generic_defconfigs):
529 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
530 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
531 grep -Ev '^#'
532 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
533 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
534 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
535 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
536 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
537 "$(origin BOARDS)" $(BOARDS)
538 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
539
540#
541# Prevent generic merge_config rules attempting to merge single fragments
542#
543$(generic_config_dir)/%.config: ;
544
545#
546# Prevent direct use of generic_defconfig, which is intended to be used as the
547# basis of the various ISA-specific targets generated above.
548#
549.PHONY: generic_defconfig
550generic_defconfig:
551 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
552 $(Q)echo "used via an ISA-specific target from the following list:"
553 $(Q)echo
554 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
555 $(Q)echo
556 $(Q)false
557
558#
559# Legacy defconfig compatibility - these targets used to be real defconfigs but
560# now that the boards have been converted to use the generic kernel they are
561# wrappers around the generic rules above.
562#
563legacy_defconfigs += ocelot_defconfig
564ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
565
566legacy_defconfigs += sead3_defconfig
567sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
568
569legacy_defconfigs += sead3micro_defconfig
570sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
571
572legacy_defconfigs += xilfpga_defconfig
573xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
574
575.PHONY: $(legacy_defconfigs)
576$(legacy_defconfigs):
577 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)