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#
125undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
126undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
127predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
128predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
129cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
130cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
131
132cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
133 -fno-omit-frame-pointer
134
135# Some distribution-specific toolchains might pass the -fstack-check
136# option during the build, which adds a simple stack-probe at the beginning
137# of every function. This stack probe is to ensure that there is enough
138# stack space, else a SEGV is generated. This is not desirable for MIPS
139# as kernel stacks are small, placed in unmapped virtual memory, and do not
140# grow when overflowed. Especially on SGI IP27 platforms, this check will
141# lead to a NULL pointer dereference in _raw_spin_lock_irq.
142#
143# In disassembly, this stack probe appears at the top of a function as:
144# sd zero,<offset>(sp)
145# Where <offset> is a negative value.
146#
147cflags-y += -fno-stack-check
148
149#
150# CPU-dependent compiler/assembler options for optimization.
151#
152cflags-$(CONFIG_CPU_R3000) += -march=r3000
153cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
154cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
155cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
156cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
157cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
158cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
159 -Wa,-mips32 -Wa,--trap
160cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
161 -Wa,-mips32r2 -Wa,--trap
162cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
163cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
164 -Wa,-mips64 -Wa,--trap
165cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
166 -Wa,-mips64r2 -Wa,--trap
167cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
168cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
169cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
170 -Wa,--trap
171cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
172 -Wa,--trap
173cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
174 -Wa,--trap
175cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
176 -Wa,--trap
177cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
178 -Wa,--trap
179cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
180cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
181cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
182cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
183 -Wa,--trap
184cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
185ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
186cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
187endif
188cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
189cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
190
191cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
192cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
193cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
194
195# For smartmips configurations, there are hundreds of warnings due to ISA overrides
196# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
197# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
198# similar directives in the kernel will spam the build logs with the following warnings:
199# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
200# or
201# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
202# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
203# been fixed properly.
204mips-cflags := $(cflags-y)
205ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
206smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
207cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
208endif
209ifeq ($(CONFIG_CPU_MICROMIPS),y)
210micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
211cflags-$(micromips-ase) += -mmicromips
212endif
213ifeq ($(CONFIG_CPU_HAS_MSA),y)
214toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
215cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
216endif
217toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
218cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
219# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
220# only warns
221xpa-cflags-y := $(mips-cflags)
222xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
223toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
224cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
225
226#
227# Firmware support
228#
229libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
230libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
231libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
232libs-y += arch/mips/fw/lib/
233
234#
235# Kernel compression
236#
237ifdef CONFIG_SYS_SUPPORTS_ZBOOT
238COMPRESSION_FNAME = vmlinuz
239else
240COMPRESSION_FNAME = vmlinux
241endif
242
243#
244# Board-dependent options and extra files
245#
246include arch/mips/Kbuild.platforms
247
248ifdef CONFIG_PHYSICAL_START
249load-y = $(CONFIG_PHYSICAL_START)
250endif
251
252entry-noisa-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
253 | grep "\bkernel_entry\b" | cut -f1 -d \ )
254ifdef CONFIG_CPU_MICROMIPS
255 #
256 # Set the ISA bit, since the kernel_entry symbol in the ELF will have it
257 # clear which would lead to images containing addresses which bootloaders may
258 # jump to as MIPS32 code.
259 #
260 entry-y = $(patsubst %0,%1,$(patsubst %2,%3,$(patsubst %4,%5, \
261 $(patsubst %6,%7,$(patsubst %8,%9,$(patsubst %a,%b, \
262 $(patsubst %c,%d,$(patsubst %e,%f,$(entry-noisa-y)))))))))
263else
264 entry-y = $(entry-noisa-y)
265endif
266
267cflags-y += -I$(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
312LDFLAGS += -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')
318ifdef CONFIG_64BIT
319CHECKFLAGS += -m64
320endif
321endif
322
323OBJCOPYFLAGS += --remove-section=.reginfo
324
325head-y := arch/mips/kernel/head.o
326
327libs-y += arch/mips/lib/
328libs-y += arch/mips/math-emu/
329
330# See arch/mips/Kbuild for content of core part of the kernel
331core-y += arch/mips/
332
333drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
334
335# suspend and hibernation support
336drivers-$(CONFIG_PM) += arch/mips/power/
337
338# boot image targets (arch/mips/boot/)
339boot-y := vmlinux.bin
340boot-y += vmlinux.ecoff
341boot-y += vmlinux.srec
342ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
343boot-y += uImage
344boot-y += uImage.bin
345boot-y += uImage.bz2
346boot-y += uImage.gz
347boot-y += uImage.lzma
348boot-y += uImage.lzo
349endif
350boot-y += vmlinux.itb
351boot-y += vmlinux.gz.itb
352boot-y += vmlinux.bz2.itb
353boot-y += vmlinux.lzma.itb
354boot-y += vmlinux.lzo.itb
355
356# compressed boot image targets (arch/mips/boot/compressed/)
357bootz-y := vmlinuz
358bootz-y += vmlinuz.bin
359bootz-y += vmlinuz.ecoff
360bootz-y += vmlinuz.srec
361ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
362bootz-y += uzImage.bin
363endif
364
365ifdef CONFIG_LASAT
366rom.bin rom.sw: vmlinux
367 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
368 $(bootvars-y) $@
369endif
370
371#
372# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
373# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
374# convert to ECOFF using elf2ecoff.
375#
376quiet_cmd_32 = OBJCOPY $@
377 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
378vmlinux.32: vmlinux
379 $(call cmd,32)
380
381#
382# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
383# ELF files from 32-bit files by conversion.
384#
385quiet_cmd_64 = OBJCOPY $@
386 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
387vmlinux.64: vmlinux
388 $(call cmd,64)
389
390all: $(all-y)
391
392# boot
393$(boot-y): $(vmlinux-32) FORCE
394 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
395 $(bootvars-y) arch/mips/boot/$@
396
397ifdef CONFIG_SYS_SUPPORTS_ZBOOT
398# boot/compressed
399$(bootz-y): $(vmlinux-32) FORCE
400 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
401 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
402else
403vmlinuz: FORCE
404 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
405 /bin/false
406endif
407
408
409CLEAN_FILES += vmlinux.32 vmlinux.64
410
411# device-trees
412core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
413
414%.dtb %.dtb.S %.dtb.o: | scripts
415 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
416
417PHONY += dtbs
418dtbs: scripts
419 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
420
421PHONY += dtbs_install
422dtbs_install:
423 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
424
425archprepare:
426ifdef CONFIG_MIPS32_N32
427 @$(kecho) ' Checking missing-syscalls for N32'
428 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
429endif
430ifdef CONFIG_MIPS32_O32
431 @$(kecho) ' Checking missing-syscalls for O32'
432 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
433endif
434
435install:
436 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
437ifdef CONFIG_SYS_SUPPORTS_ZBOOT
438 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
439endif
440 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
441 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
442
443archclean:
444 $(Q)$(MAKE) $(clean)=arch/mips/boot
445 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
446 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
447 $(Q)$(MAKE) $(clean)=arch/mips/lasat
448
449define archhelp
450 echo ' install - install kernel into $(INSTALL_PATH)'
451 echo ' vmlinux.ecoff - ECOFF boot image'
452 echo ' vmlinux.bin - Raw binary boot image'
453 echo ' vmlinux.srec - SREC boot image'
454 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
455 echo ' vmlinuz - Compressed boot(zboot) image'
456 echo ' vmlinuz.ecoff - ECOFF zboot image'
457 echo ' vmlinuz.bin - Raw binary zboot image'
458 echo ' vmlinuz.srec - SREC zboot image'
459 echo ' uImage - U-Boot image'
460 echo ' uImage.bin - U-Boot image (uncompressed)'
461 echo ' uImage.bz2 - U-Boot image (bz2)'
462 echo ' uImage.gz - U-Boot image (gzip)'
463 echo ' uImage.lzma - U-Boot image (lzma)'
464 echo ' uImage.lzo - U-Boot image (lzo)'
465 echo ' uzImage.bin - U-Boot image (self-extracting)'
466 echo ' dtbs - Device-tree blobs for enabled boards'
467 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
468 echo
469 echo ' These will be default as appropriate for a configured platform.'
470 echo
471 echo ' If you are targeting a system supported by generic kernels you may'
472 echo ' configure the kernel for a given architecture target like so:'
473 echo
474 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
475 echo
476 echo ' Otherwise, the following default configurations are available:'
477endef
478
479generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
480generic_defconfigs :=
481
482#
483# If the user generates a generic kernel configuration without specifying a
484# list of boards to include the config fragments for, default to including all
485# available board config fragments.
486#
487ifeq ($(BOARDS),)
488BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
489endif
490
491#
492# Generic kernel configurations which merge generic_defconfig with the
493# appropriate config fragments from arch/mips/configs/generic/, resulting in
494# the ability to easily configure the kernel for a given architecture,
495# endianness & set of boards without duplicating the needed configuration in
496# hundreds of defconfig files.
497#
498define gen_generic_defconfigs
499$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
500target := $(bits)$(rev)$(filter el,$(endian))_defconfig
501generic_defconfigs += $$(target)
502$$(target): $(generic_config_dir)/$(bits)$(rev).config
503$$(target): $(generic_config_dir)/$(endian).config
504)))
505endef
506
507$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
508$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
509
510.PHONY: $(generic_defconfigs)
511$(generic_defconfigs):
512 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
513 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
514 grep -Ev '^#'
515 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
516 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
517 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
518 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
519 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
520 "$(origin BOARDS)" $(BOARDS)
521 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
522
523#
524# Prevent generic merge_config rules attempting to merge single fragments
525#
526$(generic_config_dir)/%.config: ;
527
528#
529# Prevent direct use of generic_defconfig, which is intended to be used as the
530# basis of the various ISA-specific targets generated above.
531#
532.PHONY: generic_defconfig
533generic_defconfig:
534 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
535 $(Q)echo "used via an ISA-specific target from the following list:"
536 $(Q)echo
537 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
538 $(Q)echo
539 $(Q)false
540
541#
542# Legacy defconfig compatibility - these targets used to be real defconfigs but
543# now that the boards have been converted to use the generic kernel they are
544# wrappers around the generic rules above.
545#
546.PHONY: sead3_defconfig
547sead3_defconfig:
548 $(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=sead-3
549
550.PHONY: sead3micro_defconfig
551sead3micro_defconfig:
552 $(Q)$(MAKE) -f $(srctree)/Makefile micro32r2el_defconfig BOARDS=sead-3
553
554.PHONY: xilfpga_defconfig
555xilfpga_defconfig:
556 $(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=xilfpga