1 #
2 # This file is subject to the terms and condit
3 # License. See the file "COPYING" in the main
4 # for more details.
5 #
6 # Copyright (C) 1994, 95, 96, 2003 by Ralf Bae
7 # DECStation modifications by Paul M. Antoine,
8 # Copyright (C) 2002, 2003, 2004 Maciej W. Ro
9 #
10 # This file is included by the global makefile
11 # architecture-specific flags and dependencies
12 #
13
14 archscripts: scripts_basic
15 $(Q)$(MAKE) $(build)=arch/mips/tools e
16 ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
17 $(Q)$(MAKE) $(build)=arch/mips/tools l
18 endif
19 $(Q)$(MAKE) $(build)=arch/mips/boot/to
20
21 KBUILD_DEFCONFIG := 32r2el_defconfig
22 KBUILD_DTBS := dtbs
23
24 #
25 # Select the object file format to substitute
26 #
27 ifdef CONFIG_CPU_LITTLE_ENDIAN
28 32bit-tool-archpref = mipsel
29 64bit-tool-archpref = mips64el
30 32bit-bfd = elf32-tradlittlemips
31 64bit-bfd = elf64-tradlittlemips
32 32bit-emul = elf32ltsmip
33 64bit-emul = elf64ltsmip
34 else
35 32bit-tool-archpref = mips
36 64bit-tool-archpref = mips64
37 32bit-bfd = elf32-tradbigmips
38 64bit-bfd = elf64-tradbigmips
39 32bit-emul = elf32btsmip
40 64bit-emul = elf64btsmip
41 endif
42
43 ifdef CONFIG_32BIT
44 tool-archpref = $(32bit-tool-archpre
45 UTS_MACHINE := mips
46 endif
47 ifdef CONFIG_64BIT
48 tool-archpref = $(64bit-tool-archpre
49 UTS_MACHINE := mips64
50 endif
51
52 ifdef cross_compiling
53 ifeq ($(CROSS_COMPILE),)
54 CROSS_COMPILE := $(call cc-cross-prefix, $
55 endif
56 endif
57
58 ifdef CONFIG_FUNCTION_GRAPH_TRACER
59 ifndef KBUILD_MCOUNT_RA_ADDRESS
60 ifeq ($(call cc-option-yn,-mmcount-ra-addr
61 cflags-y += -mmcount-ra-address -DKBUILD
62 endif
63 endif
64 endif
65 cflags-y += $(call cc-option, -mno-check-zero-
66
67 ifdef CONFIG_32BIT
68 ld-emul = $(32bit-emul)
69 vmlinux-32 = vmlinux
70 vmlinux-64 = vmlinux.64
71
72 cflags-y += -mabi=32
73 endif
74
75 ifdef CONFIG_64BIT
76 ld-emul = $(64bit-emul)
77 vmlinux-32 = vmlinux.32
78 vmlinux-64 = vmlinux
79
80 cflags-y += -mabi=64
81 endif
82
83 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-3
84 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-6
85 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
86
87 #
88 # GCC uses -G 0 -mabicalls -fpic as default.
89 # code since it only slows down the whole thin
90 # use of global pointer optimizations but thei
91 # the current pointer optimization.
92 #
93 # The DECStation requires an ECOFF kernel for
94 # machines may also. Since BFD is incredibly
95 # crossformat linking we rely on the elf2ecoff
96 #
97 cflags-y += -G 0 -mno-a
98 cflags-y += -msoft-floa
99 LDFLAGS_vmlinux += -G 0 -stati
100 KBUILD_AFLAGS_MODULE += -mlong-call
101 KBUILD_CFLAGS_MODULE += -mlong-call
102
103 ifeq ($(CONFIG_RELOCATABLE),y)
104 LDFLAGS_vmlinux += --emit-relo
105 endif
106
107 cflags-y += -ffreestanding
108
109 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
110 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
111
112 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-o
113 -fno-omit-f
114
115 # Some distribution-specific toolchains might
116 # option during the build, which adds a simple
117 # of every function. This stack probe is to e
118 # stack space, else a SEGV is generated. This
119 # as kernel stacks are small, placed in unmapp
120 # grow when overflowed. Especially on SGI IP2
121 # lead to a NULL pointer dereference in _raw_s
122 #
123 # In disassembly, this stack probe appears at
124 # sd zero,<offset>(sp)
125 # Where <offset> is a negative value.
126 #
127 cflags-y += -fno-stack-check
128
129 # binutils from v2.35 when built with --enable
130 # supports an -mfix-loongson3-llsc flag which
131 # instruction to work around a CPU bug (see __
132 # for a description).
133 #
134 # We disable this in order to prevent the asse
135 # instruction that labels refer to, ie. if we
136 #
137 # 1: ll v0, 0(a0)
138 #
139 # ...then with the assembler fix applied the l
140 # instruction inserted by the assembler, and i
141 # exception table the table would no longer co
142 # instruction.
143 #
144 # Avoid this by explicitly disabling that asse
145 #
146 cflags-y += $(call cc-option,-Wa$(comma)-mno-f
147
148 #
149 # CPU-dependent compiler/assembler options for
150 #
151 cflags-$(CONFIG_CPU_R3000) += $(call cc-o
152 cflags-$(CONFIG_CPU_R4300) += $(call cc-o
153 cflags-$(CONFIG_CPU_R4X00) += $(call cc-o
154 cflags-$(CONFIG_CPU_TX49XX) += $(call cc-o
155 cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips
156 cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips
157 cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips
158 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips
159 cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips
160 cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips
161 cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips
162 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips
163 cflags-$(CONFIG_CPU_P5600) += $(call cc-o
164 -Wa,--trap -modd-spreg
165 cflags-$(CONFIG_CPU_R5000) += $(call cc-o
166 -Wa,--trap
167 cflags-$(CONFIG_CPU_R5500) += $(call cc-o
168 -Wa,--trap
169 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-o
170 -Wa,--trap
171 cflags-$(CONFIG_CPU_RM7000) += $(call cc-o
172 -Wa,--trap
173 cflags-$(CONFIG_CPU_SB1) += $(call cc-o
174 -Wa,--trap
175 cflags-$(CONFIG_CPU_SB1) += $(call cc-o
176 cflags-$(CONFIG_CPU_SB1) += $(call cc-o
177 cflags-$(CONFIG_CPU_R10000) += $(call cc-o
178 -Wa,--trap
179 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=o
180 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-
181 cflags-$(CONFIG_CPU_BMIPS) += -march=mips
182
183 cflags-$(CONFIG_CPU_LOONGSON2E) += \
184 $(call cc-option,-marc
185 cflags-$(CONFIG_CPU_LOONGSON2F) += \
186 $(call cc-option,-marc
187 # Some -march= flags enable MMI instructions,
188 # support being enabled alongside -msoft-float
189 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-
190 cflags-$(CONFIG_CPU_LOONGSON64) += \
191 $(call cc-option,-marc
192 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-o
193
194 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(c
195 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(c
196 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(c
197 ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
198 cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-m
199 cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-
200 endif
201
202 #
203 # Some versions of binutils, not currently mai
204 # an -mfix-loongson3-llsc flag which emits a s
205 # to work around a CPU bug (see __SYNC_loongso
206 # description).
207 #
208 # We disable this in order to prevent the asse
209 # instruction that labels refer to, ie. if we
210 #
211 # 1: ll v0, 0(a0)
212 #
213 # ...then with the assembler fix applied the l
214 # instruction inserted by the assembler, and i
215 # exception table the table would no longer co
216 # instruction.
217 #
218 # Avoid this by explicitly disabling that asse
219 # binutils does not merge support for the flag
220 # this later - for now it ensures vendor toolc
221 #
222 cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-o
223
224 # For smartmips configurations, there are hund
225 # in assembly and header files. smartmips is o
226 # and there is no support for 64-bit. Various
227 # similar directives in the kernel will spam t
228 # Warning: the `smartmips' extension requires
229 # or
230 # Warning: the 64-bit MIPS architecture does n
231 # Pass -Wa,--no-warn to disable all assembler
232 # been fixed properly.
233 mips-cflags := $(c
234 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
235 smartmips-ase := $(c
236 cflags-$(smartmips-ase) += -ms
237 endif
238 ifeq ($(CONFIG_CPU_MICROMIPS),y)
239 micromips-ase := $(c
240 cflags-$(micromips-ase) += -mm
241 endif
242 ifeq ($(CONFIG_CPU_HAS_MSA),y)
243 toolchain-msa := $(c
244 cflags-$(toolchain-msa) += -DT
245 endif
246 toolchain-virt := $(c
247 cflags-$(toolchain-virt) += -DT
248 # For -mmicromips, use -Wa,-fatal-warnings to
249 # only warns
250 xpa-cflags-y := $(m
251 xpa-cflags-$(micromips-ase) += -mm
252 toolchain-xpa := $(c
253 cflags-$(toolchain-xpa) += -DT
254 toolchain-crc := $(c
255 cflags-$(toolchain-crc) += -DT
256 toolchain-dsp := $(c
257 cflags-$(toolchain-dsp) += -DT
258 toolchain-ginv := $(c
259 cflags-$(toolchain-ginv) += -DT
260
261 #
262 # Firmware support
263 #
264 libs-$(CONFIG_FW_ARC) += arch/mips/f
265 libs-$(CONFIG_FW_CFE) += arch/mips/f
266 libs-$(CONFIG_FW_SNIPROM) += arch/mips/f
267 libs-y += arch/mips/f
268
269 #
270 # Kernel compression
271 #
272 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
273 COMPRESSION_FNAME = vmlinuz
274 else
275 COMPRESSION_FNAME = vmlinux
276 endif
277
278 #
279 # Board-dependent options and extra files
280 #
281 include $(srctree)/arch/mips/Kbuild.platforms
282
283 ifdef CONFIG_PHYSICAL_START
284 load-y = $(CO
285 endif
286
287 entry-y = $(shell $(ob
288 cflags-y += -I$(srctree
289 drivers-$(CONFIG_PCI) += arch/mips/p
290
291 #
292 # Automatically detect the build format. By de
293 # the elf format according to the load address
294 # We can always force a build with a 64-bits s
295 # passing 'KBUILD_SYM32=no' option to the make
296 #
297 ifdef CONFIG_64BIT
298 ifndef KBUILD_SYM32
299 ifeq ($(shell expr $(load-y) \< 0xffffffff
300 KBUILD_SYM32 = $(call cc-option-yn, -msy
301 endif
302 endif
303
304 ifeq ($(KBUILD_SYM32), y)
305 cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD
306 else
307 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
308 $(error CONFIG_CPU_DADDI_WORKAROUNDS uns
309 endif
310 endif
311 endif
312
313 # When linking a 32-bit executable the LLVM li
314 # 32-bit load address that has been sign-exten
315 # remove the upper 32 bits then, as it is safe
316 # linkers.
317 ifdef CONFIG_64BIT
318 load-ld = $(load-y)
319 else
320 load-ld = $(subst 0xff
321 endif
322
323 KBUILD_AFLAGS += $(cflags-y)
324 KBUILD_CFLAGS += $(cflags-y)
325 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(lo
326 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoff
327
328 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-
329 LINKER_LOAD_ADDRESS=$(load-l
330 VMLINUX_ENTRY_ADDRESS=$(entr
331 PLATFORM="$(platform-y)" \
332 ITS_INPUTS="$(its-y)"
333 ifdef CONFIG_32BIT
334 bootvars-y += ADDR_BITS=32
335 endif
336 ifdef CONFIG_64BIT
337 bootvars-y += ADDR_BITS=64
338 endif
339
340 # This is required to get dwarf unwinding tabl
341 # instead of .eh_frame so we don't discard the
342 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl
343
344 KBUILD_LDFLAGS += -m $(ld-emul)
345
346 ifdef need-compiler
347 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS)
348 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL
349 sed -e "s/^\#define /-D'/" -e "s/ /'='
350 endif
351
352 OBJCOPYFLAGS += --remove-section=.r
353
354 libs-y += arch/mips/lib/
355 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/ma
356
357 drivers-y += arch/mips/c
358
359 # suspend and hibernation support
360 drivers-$(CONFIG_PM) += arch/mips/power/
361
362 # boot image targets (arch/mips/boot/)
363 boot-y := vmlinux.bin
364 boot-y += vmlinux.ecoff
365 boot-y += vmlinux.srec
366 boot-y += uImage
367 boot-y += uImage.bin
368 boot-y += uImage.bz2
369 boot-y += uImage.gz
370 boot-y += uImage.lzma
371 boot-y += uImage.lzo
372 boot-y += vmlinux.itb
373 boot-y += vmlinux.gz.itb
374 boot-y += vmlinux.bz2.itb
375 boot-y += vmlinux.lzma.itb
376 boot-y += vmlinux.lzo.itb
377
378 # compressed boot image targets (arch/mips/boo
379 bootz-y := vmlinuz
380 bootz-y += vmlinuz.bin
381 bootz-y += vmlinuz.ecoff
382 bootz-y += vmlinuz.srec
383 bootz-y += uzImage.bin
384 bootz-y += vmlinuz.itb
385
386 #
387 # Some machines like the Indy need 32-bit ELF
388 # Other need ECOFF, so we build a 32-bit ELF b
389 # convert to ECOFF using elf2ecoff.
390 #
391 quiet_cmd_32 = OBJCOPY $@
392 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(
393 vmlinux.32: vmlinux
394 $(call cmd,32)
395
396 #
397 # The 64-bit ELF tools are pretty broken so at
398 # ELF files from 32-bit files by conversion.
399 #
400 quiet_cmd_64 = OBJCOPY $@
401 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(
402 vmlinux.64: vmlinux
403 $(call cmd,64)
404
405 all: $(all-y) $(KBUILD_DTBS)
406
407 # boot
408 $(boot-y): $(vmlinux-32) FORCE
409 $(Q)$(MAKE) $(build)=arch/mips/boot VM
410 $(bootvars-y) arch/mips/boot/$
411
412 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
413 # boot/compressed
414 $(bootz-y): $(vmlinux-32) FORCE
415 $(Q)$(MAKE) $(build)=arch/mips/boot/co
416 $(bootvars-y) 32bit-bfd=$(32bi
417 else
418 vmlinuz: FORCE
419 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is
420 /bin/false
421 endif
422
423
424 CLEAN_FILES += vmlinux.32 vmlinux.64
425
426 # device-trees
427 core-y += arch/mips/boot/dts/
428
429 archprepare:
430 ifdef CONFIG_MIPS32_N32
431 @$(kecho) ' Checking missing-syscalls
432 $(Q)$(MAKE) $(build)=. missing-syscall
433 endif
434 ifdef CONFIG_MIPS32_O32
435 @$(kecho) ' Checking missing-syscalls
436 $(Q)$(MAKE) $(build)=. missing-syscall
437 endif
438
439 install:
440 $(Q)install -D -m 755 vmlinux $(INSTAL
441 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
442 $(Q)install -D -m 755 vmlinuz $(INSTAL
443 endif
444 $(Q)install -D -m 644 .config $(INSTAL
445 $(Q)install -D -m 644 System.map $(INS
446
447 archheaders:
448 $(Q)$(MAKE) $(build)=arch/mips/kernel/
449
450 define archhelp
451 echo ' install - install
452 echo ' vmlinux.ecoff - ECOFF b
453 echo ' vmlinux.bin - Raw bin
454 echo ' vmlinux.srec - SREC bo
455 echo ' vmlinux.32 - 64-bit
456 echo ' vmlinuz - Compres
457 echo ' vmlinuz.ecoff - ECOFF z
458 echo ' vmlinuz.bin - Raw bin
459 echo ' vmlinuz.srec - SREC zb
460 echo ' uImage - U-Boot
461 echo ' uImage.bin - U-Boot
462 echo ' uImage.bz2 - U-Boot
463 echo ' uImage.gz - U-Boot
464 echo ' uImage.lzma - U-Boot
465 echo ' uImage.lzo - U-Boot
466 echo ' uzImage.bin - U-Boot
467 echo
468 echo ' These will be default as appro
469 echo
470 echo ' If you are targeting a system
471 echo ' configure the kernel for a giv
472 echo
473 echo ' {micro32,32,64}{r1,r2,r6}{el,}
474 echo
475 echo ' Where BOARDS is some subset of
476 for board in $(sort $(BOARDS)); do ech
477 echo
478 echo ' Specifically the following gen
479 echo ' supported:'
480 echo
481 $(foreach cfg,$(generic_defconfigs),
482 printf " %-24s - Build generic kern
483 echo
484 echo ' The following legacy default c
485 echo ' generic and can still be used:
486 echo
487 $(foreach cfg,$(sort $(legacy_defconfi
488 printf " %-24s - Build $($(cfg)-y)\
489 echo
490 echo ' Otherwise, the following defau
491 endef
492
493 generic_config_dir = $(srctree)/arch/$(ARCH)/c
494 generic_defconfigs :=
495
496 #
497 # If the user generates a generic kernel confi
498 # list of boards to include the config fragmen
499 # available board config fragments.
500 #
501 ifeq ($(BOARDS),)
502 BOARDS = $(patsubst board-%.config,%,$(notdir
503 endif
504
505 #
506 # Generic kernel configurations which merge ge
507 # appropriate config fragments from arch/mips/
508 # the ability to easily configure the kernel f
509 # endianness & set of boards without duplicati
510 # hundreds of defconfig files.
511 #
512 define gen_generic_defconfigs
513 $(foreach bits,$(1),$(foreach rev,$(2),$(forea
514 target := $(bits)$(rev)$(filter el,$(endian))_
515 generic_defconfigs += $$(target)
516 $$(target): $(generic_config_dir)/$(bits)$(rev
517 $$(target): $(generic_config_dir)/$(endian).co
518 )))
519 endef
520
521 $(eval $(call gen_generic_defconfigs,32 64,r1
522 $(eval $(call gen_generic_defconfigs,micro32,r
523
524 define describe_generic_defconfig
525 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(su
526 endef
527
528 .PHONY: $(generic_defconfigs)
529 $(generic_defconfigs):
530 $(Q)$(CONFIG_SHELL) $(srctree)/scripts
531 -m -O $(objtree) $(srctree)/ar
532 grep -Ev '^#'
533 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.c
534 $(Q)$(MAKE) -f $(srctree)/Makefile old
535 KCONFIG_CONFIG=$(objtree)/.con
536 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(
537 $(srctree) $(objtree) $(objtre
538 "$(origin BOARDS)" $(BOARDS)
539 $(Q)$(MAKE) -f $(srctree)/Makefile old
540
541 #
542 # Prevent generic merge_config rules attemptin
543 #
544 $(generic_config_dir)/%.config: ;
545
546 #
547 # Prevent direct use of generic_defconfig, whi
548 # basis of the various ISA-specific targets ge
549 #
550 .PHONY: generic_defconfig
551 generic_defconfig:
552 $(Q)echo "generic_defconfig is not int
553 $(Q)echo "used via an ISA-specific tar
554 $(Q)echo
555 $(Q)for cfg in $(generic_defconfigs);
556 $(Q)echo
557 $(Q)false
558
559 #
560 # Legacy defconfig compatibility - these targe
561 # now that the boards have been converted to u
562 # wrappers around the generic rules above.
563 #
564 legacy_defconfigs += ocelot_defc
565 ocelot_defconfig-y := 32r2el_defc
566
567 legacy_defconfigs += sead3_defco
568 sead3_defconfig-y := 32r2el_defc
569
570 legacy_defconfigs += sead3micro_
571 sead3micro_defconfig-y := micro32r2el
572
573 legacy_defconfigs += xilfpga_def
574 xilfpga_defconfig-y := 32r2el_defc
575
576 legacy_defconfigs += pistachio_d
577 pistachio_defconfig-y := 32r2el_defc
578
579 .PHONY: $(legacy_defconfigs)
580 $(legacy_defconfigs):
581 $(Q)$(MAKE) -f $(srctree)/Makefile $($
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