Merge tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[sfrench/cifs-2.6.git] / arch / mips / Makefile
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
15 archscripts: scripts_basic
16         $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
17         $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
18
19 KBUILD_DEFCONFIG := 32r2el_defconfig
20
21 #
22 # Select the object file format to substitute into the linker script.
23 #
24 ifdef CONFIG_CPU_LITTLE_ENDIAN
25 32bit-tool-archpref     = mipsel
26 64bit-tool-archpref     = mips64el
27 32bit-bfd               = elf32-tradlittlemips
28 64bit-bfd               = elf64-tradlittlemips
29 32bit-emul              = elf32ltsmip
30 64bit-emul              = elf64ltsmip
31 else
32 32bit-tool-archpref     = mips
33 64bit-tool-archpref     = mips64
34 32bit-bfd               = elf32-tradbigmips
35 64bit-bfd               = elf64-tradbigmips
36 32bit-emul              = elf32btsmip
37 64bit-emul              = elf64btsmip
38 endif
39
40 ifdef CONFIG_32BIT
41 tool-archpref           = $(32bit-tool-archpref)
42 UTS_MACHINE             := mips
43 endif
44 ifdef CONFIG_64BIT
45 tool-archpref           = $(64bit-tool-archpref)
46 UTS_MACHINE             := mips64
47 endif
48
49 ifneq ($(SUBARCH),$(ARCH))
50   ifeq ($(CROSS_COMPILE),)
51     CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
52   endif
53 endif
54
55 ifdef CONFIG_FUNCTION_GRAPH_TRACER
56   ifndef KBUILD_MCOUNT_RA_ADDRESS
57     ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
58       cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
59     endif
60   endif
61 endif
62 cflags-y += $(call cc-option, -mno-check-zero-division)
63
64 ifdef CONFIG_32BIT
65 ld-emul                 = $(32bit-emul)
66 vmlinux-32              = vmlinux
67 vmlinux-64              = vmlinux.64
68
69 cflags-y                += -mabi=32
70 endif
71
72 ifdef CONFIG_64BIT
73 ld-emul                 = $(64bit-emul)
74 vmlinux-32              = vmlinux.32
75 vmlinux-64              = vmlinux
76
77 cflags-y                += -mabi=64
78 endif
79
80 all-$(CONFIG_BOOT_ELF32)        := $(vmlinux-32)
81 all-$(CONFIG_BOOT_ELF64)        := $(vmlinux-64)
82 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
83
84 #
85 # GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
86 # code since it only slows down the whole thing.  At some point we might make
87 # use of global pointer optimizations but their use of $28 conflicts with
88 # the current pointer optimization.
89 #
90 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
91 # machines may also.  Since BFD is incredibly buggy with respect to
92 # crossformat linking we rely on the elf2ecoff tool for format conversion.
93 #
94 cflags-y                        += -G 0 -mno-abicalls -fno-pic -pipe
95 cflags-y                        += -msoft-float
96 LDFLAGS_vmlinux                 += -G 0 -static -n -nostdlib
97 KBUILD_AFLAGS_MODULE            += -mlong-calls
98 KBUILD_CFLAGS_MODULE            += -mlong-calls
99
100 ifeq ($(CONFIG_RELOCATABLE),y)
101 LDFLAGS_vmlinux                 += --emit-relocs
102 endif
103
104 #
105 # pass -msoft-float to GAS if it supports it.  However on newer binutils
106 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
107 # set ".set hardfloat" in all files which manipulate floating point registers.
108 #
109 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
110         cflags-y                += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
111 endif
112
113 cflags-y += -ffreestanding
114
115 #
116 # We explicitly add the endianness specifier if needed, this allows
117 # to compile kernels with a toolchain for the other endianness. We
118 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
119 # when fed the toolchain default!
120 #
121 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
122 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
123 # are used, so we kludge that here.  A bug has been filed at
124 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
125 #
126 # clang doesn't suffer from these issues and our checks against -dumpmachine
127 # don't work so well when cross compiling, since without providing --target
128 # clang's output will be based upon the build machine. So for clang we simply
129 # unconditionally specify -EB or -EL as appropriate.
130 #
131 ifdef CONFIG_CC_IS_CLANG
132 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += -EB
133 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += -EL
134 else
135 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
136 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
137 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
138 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
139 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
140 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
141 endif
142
143 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
144                                    -fno-omit-frame-pointer
145
146 # Some distribution-specific toolchains might pass the -fstack-check
147 # option during the build, which adds a simple stack-probe at the beginning
148 # of every function.  This stack probe is to ensure that there is enough
149 # stack space, else a SEGV is generated.  This is not desirable for MIPS
150 # as kernel stacks are small, placed in unmapped virtual memory, and do not
151 # grow when overflowed.  Especially on SGI IP27 platforms, this check will
152 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
153 #
154 # In disassembly, this stack probe appears at the top of a function as:
155 #    sd         zero,<offset>(sp)
156 # Where <offset> is a negative value.
157 #
158 cflags-y += -fno-stack-check
159
160 #
161 # CPU-dependent compiler/assembler options for optimization.
162 #
163 cflags-$(CONFIG_CPU_R3000)      += -march=r3000
164 cflags-$(CONFIG_CPU_TX39XX)     += -march=r3900
165 cflags-$(CONFIG_CPU_R4300)      += -march=r4300 -Wa,--trap
166 cflags-$(CONFIG_CPU_VR41XX)     += -march=r4100 -Wa,--trap
167 cflags-$(CONFIG_CPU_R4X00)      += -march=r4600 -Wa,--trap
168 cflags-$(CONFIG_CPU_TX49XX)     += -march=r4600 -Wa,--trap
169 cflags-$(CONFIG_CPU_MIPS32_R1)  += -march=mips32 -Wa,--trap
170 cflags-$(CONFIG_CPU_MIPS32_R2)  += -march=mips32r2 -Wa,--trap
171 cflags-$(CONFIG_CPU_MIPS32_R6)  += -march=mips32r6 -Wa,--trap -modd-spreg
172 cflags-$(CONFIG_CPU_MIPS64_R1)  += -march=mips64 -Wa,--trap
173 cflags-$(CONFIG_CPU_MIPS64_R2)  += -march=mips64r2 -Wa,--trap
174 cflags-$(CONFIG_CPU_MIPS64_R6)  += -march=mips64r6 -Wa,--trap
175 cflags-$(CONFIG_CPU_R5000)      += -march=r5000 -Wa,--trap
176 cflags-$(CONFIG_CPU_R5432)      += $(call cc-option,-march=r5400,-march=r5000) \
177                         -Wa,--trap
178 cflags-$(CONFIG_CPU_R5500)      += $(call cc-option,-march=r5500,-march=r5000) \
179                         -Wa,--trap
180 cflags-$(CONFIG_CPU_NEVADA)     += $(call cc-option,-march=rm5200,-march=r5000) \
181                         -Wa,--trap
182 cflags-$(CONFIG_CPU_RM7000)     += $(call cc-option,-march=rm7000,-march=r5000) \
183                         -Wa,--trap
184 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-march=sb1,-march=r5000) \
185                         -Wa,--trap
186 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mdmx)
187 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mips3d)
188 cflags-$(CONFIG_CPU_R8000)      += -march=r8000 -Wa,--trap
189 cflags-$(CONFIG_CPU_R10000)     += $(call cc-option,-march=r10000,-march=r8000) \
190                         -Wa,--trap
191 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
192 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
193 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
194 endif
195 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
196 cflags-$(CONFIG_CPU_BMIPS)      += -march=mips32 -Wa,-mips32 -Wa,--trap
197
198 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)  += $(call cc-option,-mfix-r4000,)
199 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)  += $(call cc-option,-mfix-r4400,)
200 cflags-$(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.
211 mips-cflags                             := $(cflags-y)
212 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
213 smartmips-ase                           := $(call cc-option-yn,$(mips-cflags) -msmartmips)
214 cflags-$(smartmips-ase)                 += -msmartmips -Wa,--no-warn
215 endif
216 ifeq ($(CONFIG_CPU_MICROMIPS),y)
217 micromips-ase                           := $(call cc-option-yn,$(mips-cflags) -mmicromips)
218 cflags-$(micromips-ase)                 += -mmicromips
219 endif
220 ifeq ($(CONFIG_CPU_HAS_MSA),y)
221 toolchain-msa                           := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
222 cflags-$(toolchain-msa)                 += -DTOOLCHAIN_SUPPORTS_MSA
223 endif
224 toolchain-virt                          := $(call cc-option-yn,$(mips-cflags) -mvirt)
225 cflags-$(toolchain-virt)                += -DTOOLCHAIN_SUPPORTS_VIRT
226 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
227 # only warns
228 xpa-cflags-y                            := $(mips-cflags)
229 xpa-cflags-$(micromips-ase)             += -mmicromips -Wa$(comma)-fatal-warnings
230 toolchain-xpa                           := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
231 cflags-$(toolchain-xpa)                 += -DTOOLCHAIN_SUPPORTS_XPA
232 toolchain-crc                           := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
233 cflags-$(toolchain-crc)                 += -DTOOLCHAIN_SUPPORTS_CRC
234 toolchain-dsp                           := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
235 cflags-$(toolchain-dsp)                 += -DTOOLCHAIN_SUPPORTS_DSP
236
237 #
238 # Firmware support
239 #
240 libs-$(CONFIG_FW_ARC)           += arch/mips/fw/arc/
241 libs-$(CONFIG_FW_CFE)           += arch/mips/fw/cfe/
242 libs-$(CONFIG_FW_SNIPROM)       += arch/mips/fw/sni/
243 libs-y                          += arch/mips/fw/lib/
244
245 #
246 # Kernel compression
247 #
248 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
249 COMPRESSION_FNAME               = vmlinuz
250 else
251 COMPRESSION_FNAME               = vmlinux
252 endif
253
254 #
255 # Board-dependent options and extra files
256 #
257 include arch/mips/Kbuild.platforms
258
259 ifdef CONFIG_PHYSICAL_START
260 load-y                                  = $(CONFIG_PHYSICAL_START)
261 endif
262
263 entry-y                         = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
264 cflags-y                        += -I$(srctree)/arch/mips/include/asm/mach-generic
265 drivers-$(CONFIG_PCI)           += arch/mips/pci/
266
267 #
268 # Automatically detect the build format. By default we choose
269 # the elf format according to the load address.
270 # We can always force a build with a 64-bits symbol format by
271 # passing 'KBUILD_SYM32=no' option to the make's command line.
272 #
273 ifdef CONFIG_64BIT
274   ifndef KBUILD_SYM32
275     ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
276       KBUILD_SYM32 = y
277     endif
278   endif
279
280   ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
281     cflags-y += -msym32 -DKBUILD_64BIT_SYM32
282   else
283     ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
284       $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
285     endif
286   endif
287 endif
288
289 KBUILD_AFLAGS   += $(cflags-y)
290 KBUILD_CFLAGS   += $(cflags-y)
291 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
292 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
293
294 bootvars-y      = VMLINUX_LOAD_ADDRESS=$(load-y) \
295                   VMLINUX_ENTRY_ADDRESS=$(entry-y) \
296                   PLATFORM="$(platform-y)" \
297                   ITS_INPUTS="$(its-y)"
298 ifdef CONFIG_32BIT
299 bootvars-y      += ADDR_BITS=32
300 endif
301 ifdef CONFIG_64BIT
302 bootvars-y      += ADDR_BITS=64
303 endif
304
305 # This is required to get dwarf unwinding tables into .debug_frame
306 # instead of .eh_frame so we don't discard them.
307 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
308
309 KBUILD_LDFLAGS          += -m $(ld-emul)
310
311 ifdef CONFIG_MIPS
312 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
313         egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
314         sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
315 endif
316
317 OBJCOPYFLAGS            += --remove-section=.reginfo
318
319 head-y := arch/mips/kernel/head.o
320
321 libs-y                  += arch/mips/lib/
322 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
323
324 # See arch/mips/Kbuild for content of core part of the kernel
325 core-y += arch/mips/
326
327 drivers-$(CONFIG_MIPS_CRC_SUPPORT) += arch/mips/crypto/
328 drivers-$(CONFIG_OPROFILE)      += arch/mips/oprofile/
329
330 # suspend and hibernation support
331 drivers-$(CONFIG_PM)    += arch/mips/power/
332
333 # boot image targets (arch/mips/boot/)
334 boot-y                  := vmlinux.bin
335 boot-y                  += vmlinux.ecoff
336 boot-y                  += vmlinux.srec
337 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
338 boot-y                  += uImage
339 boot-y                  += uImage.bin
340 boot-y                  += uImage.bz2
341 boot-y                  += uImage.gz
342 boot-y                  += uImage.lzma
343 boot-y                  += uImage.lzo
344 endif
345 boot-y                  += vmlinux.itb
346 boot-y                  += vmlinux.gz.itb
347 boot-y                  += vmlinux.bz2.itb
348 boot-y                  += vmlinux.lzma.itb
349 boot-y                  += vmlinux.lzo.itb
350
351 # compressed boot image targets (arch/mips/boot/compressed/)
352 bootz-y                 := vmlinuz
353 bootz-y                 += vmlinuz.bin
354 bootz-y                 += vmlinuz.ecoff
355 bootz-y                 += vmlinuz.srec
356 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
357 bootz-y                 += uzImage.bin
358 endif
359
360 ifdef CONFIG_LASAT
361 rom.bin rom.sw: vmlinux
362         $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
363                 $(bootvars-y) $@
364 endif
365
366 #
367 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
368 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
369 # convert to ECOFF using elf2ecoff.
370 #
371 quiet_cmd_32 = OBJCOPY $@
372         cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
373 vmlinux.32: vmlinux
374         $(call cmd,32)
375
376 #
377 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
378 # ELF files from 32-bit files by conversion.
379 #
380 quiet_cmd_64 = OBJCOPY $@
381         cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
382 vmlinux.64: vmlinux
383         $(call cmd,64)
384
385 all:    $(all-y)
386
387 # boot
388 $(boot-y): $(vmlinux-32) FORCE
389         $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
390                 $(bootvars-y) arch/mips/boot/$@
391
392 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
393 # boot/compressed
394 $(bootz-y): $(vmlinux-32) FORCE
395         $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
396                 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
397 else
398 vmlinuz: FORCE
399         @echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
400         /bin/false
401 endif
402
403
404 CLEAN_FILES += vmlinux.32 vmlinux.64
405
406 # device-trees
407 core-y += arch/mips/boot/dts/
408
409 archprepare:
410 ifdef CONFIG_MIPS32_N32
411         @$(kecho) '  Checking missing-syscalls for N32'
412         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
413 endif
414 ifdef CONFIG_MIPS32_O32
415         @$(kecho) '  Checking missing-syscalls for O32'
416         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
417 endif
418
419 install:
420         $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
421 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
422         $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
423 endif
424         $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
425         $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
426
427 archclean:
428         $(Q)$(MAKE) $(clean)=arch/mips/boot
429         $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
430         $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
431         $(Q)$(MAKE) $(clean)=arch/mips/lasat
432
433 archheaders:
434         $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
435
436 define archhelp
437         echo '  install              - install kernel into $(INSTALL_PATH)'
438         echo '  vmlinux.ecoff        - ECOFF boot image'
439         echo '  vmlinux.bin          - Raw binary boot image'
440         echo '  vmlinux.srec         - SREC boot image'
441         echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
442         echo '  vmlinuz              - Compressed boot(zboot) image'
443         echo '  vmlinuz.ecoff        - ECOFF zboot image'
444         echo '  vmlinuz.bin          - Raw binary zboot image'
445         echo '  vmlinuz.srec         - SREC zboot image'
446         echo '  uImage               - U-Boot image'
447         echo '  uImage.bin           - U-Boot image (uncompressed)'
448         echo '  uImage.bz2           - U-Boot image (bz2)'
449         echo '  uImage.gz            - U-Boot image (gzip)'
450         echo '  uImage.lzma          - U-Boot image (lzma)'
451         echo '  uImage.lzo           - U-Boot image (lzo)'
452         echo '  uzImage.bin          - U-Boot image (self-extracting)'
453         echo
454         echo '  These will be default as appropriate for a configured platform.'
455         echo
456         echo '  If you are targeting a system supported by generic kernels you may'
457         echo '  configure the kernel for a given architecture target like so:'
458         echo
459         echo '  {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
460         echo
461         echo '  Where BOARDS is some subset of the following:'
462         for board in $(sort $(BOARDS)); do echo "    $${board}"; done
463         echo
464         echo '  Specifically the following generic default configurations are'
465         echo '  supported:'
466         echo
467         $(foreach cfg,$(generic_defconfigs),
468           printf "  %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
469         echo
470         echo '  The following legacy default configurations have been converted to'
471         echo '  generic and can still be used:'
472         echo
473         $(foreach cfg,$(sort $(legacy_defconfigs)),
474           printf "  %-24s - Build $($(cfg)-y)\n" $(cfg);)
475         echo
476         echo '  Otherwise, the following default configurations are available:'
477 endef
478
479 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
480 generic_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 #
487 ifeq ($(BOARDS),)
488 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
489 endif
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 #
498 define gen_generic_defconfigs
499 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
500 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
501 generic_defconfigs += $$(target)
502 $$(target): $(generic_config_dir)/$(bits)$(rev).config
503 $$(target): $(generic_config_dir)/$(endian).config
504 )))
505 endef
506
507 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
508 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
509
510 define describe_generic_defconfig
511 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
512 endef
513
514 .PHONY: $(generic_defconfigs)
515 $(generic_defconfigs):
516         $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
517                 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
518                 grep -Ev '^#'
519         $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
520         $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
521                 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
522         $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
523                 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
524                 "$(origin BOARDS)" $(BOARDS)
525         $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
526
527 #
528 # Prevent generic merge_config rules attempting to merge single fragments
529 #
530 $(generic_config_dir)/%.config: ;
531
532 #
533 # Prevent direct use of generic_defconfig, which is intended to be used as the
534 # basis of the various ISA-specific targets generated above.
535 #
536 .PHONY: generic_defconfig
537 generic_defconfig:
538         $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
539         $(Q)echo "used via an ISA-specific target from the following list:"
540         $(Q)echo
541         $(Q)for cfg in $(generic_defconfigs); do echo "  $${cfg}"; done
542         $(Q)echo
543         $(Q)false
544
545 #
546 # Legacy defconfig compatibility - these targets used to be real defconfigs but
547 # now that the boards have been converted to use the generic kernel they are
548 # wrappers around the generic rules above.
549 #
550 legacy_defconfigs               += ocelot_defconfig
551 ocelot_defconfig-y              := 32r2el_defconfig BOARDS=ocelot
552
553 legacy_defconfigs               += sead3_defconfig
554 sead3_defconfig-y               := 32r2el_defconfig BOARDS=sead-3
555
556 legacy_defconfigs               += sead3micro_defconfig
557 sead3micro_defconfig-y          := micro32r2el_defconfig BOARDS=sead-3
558
559 legacy_defconfigs               += xilfpga_defconfig
560 xilfpga_defconfig-y             := 32r2el_defconfig BOARDS=xilfpga
561
562 .PHONY: $(legacy_defconfigs)
563 $(legacy_defconfigs):
564         $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)