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[mirror_ubuntu-bionic-kernel.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 KBUILD_DEFCONFIG := ip22_defconfig
16
17 #
18 # Select the object file format to substitute into the linker script.
19 #
20 ifdef CONFIG_CPU_LITTLE_ENDIAN
21 32bit-tool-archpref = mipsel
22 64bit-tool-archpref = mips64el
23 32bit-bfd = elf32-tradlittlemips
24 64bit-bfd = elf64-tradlittlemips
25 32bit-emul = elf32ltsmip
26 64bit-emul = elf64ltsmip
27 else
28 32bit-tool-archpref = mips
29 64bit-tool-archpref = mips64
30 32bit-bfd = elf32-tradbigmips
31 64bit-bfd = elf64-tradbigmips
32 32bit-emul = elf32btsmip
33 64bit-emul = elf64btsmip
34 endif
35
36 ifdef CONFIG_32BIT
37 tool-archpref = $(32bit-tool-archpref)
38 UTS_MACHINE := mips
39 endif
40 ifdef CONFIG_64BIT
41 tool-archpref = $(64bit-tool-archpref)
42 UTS_MACHINE := mips64
43 endif
44
45 ifneq ($(SUBARCH),$(ARCH))
46 ifeq ($(CROSS_COMPILE),)
47 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
48 endif
49 endif
50
51 ifdef CONFIG_FUNCTION_GRAPH_TRACER
52 ifndef KBUILD_MCOUNT_RA_ADDRESS
53 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
54 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
55 endif
56 endif
57 endif
58 cflags-y += $(call cc-option, -mno-check-zero-division)
59
60 ifdef CONFIG_32BIT
61 ld-emul = $(32bit-emul)
62 vmlinux-32 = vmlinux
63 vmlinux-64 = vmlinux.64
64
65 cflags-y += -mabi=32
66 endif
67
68 ifdef CONFIG_64BIT
69 ld-emul = $(64bit-emul)
70 vmlinux-32 = vmlinux.32
71 vmlinux-64 = vmlinux
72
73 cflags-y += -mabi=64
74 endif
75
76 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
77 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
78 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
79
80 #
81 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
82 # code since it only slows down the whole thing. At some point we might make
83 # use of global pointer optimizations but their use of $28 conflicts with
84 # the current pointer optimization.
85 #
86 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
87 # machines may also. Since BFD is incredibly buggy with respect to
88 # crossformat linking we rely on the elf2ecoff tool for format conversion.
89 #
90 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
91 cflags-y += -msoft-float
92 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
93 KBUILD_AFLAGS_MODULE += -mlong-calls
94 KBUILD_CFLAGS_MODULE += -mlong-calls
95
96 #
97 # pass -msoft-float to GAS if it supports it. However on newer binutils
98 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
99 # set ".set hardfloat" in all files which manipulate floating point registers.
100 #
101 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
102 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
103 endif
104
105 cflags-y += -ffreestanding
106
107 #
108 # We explicitly add the endianness specifier if needed, this allows
109 # to compile kernels with a toolchain for the other endianness. We
110 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
111 # when fed the toolchain default!
112 #
113 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
114 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
115 # are used, so we kludge that here. A bug has been filed at
116 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
117 #
118 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
119 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
120 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
121 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
122 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
123 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
124
125 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
126 -fno-omit-frame-pointer
127 #
128 # CPU-dependent compiler/assembler options for optimization.
129 #
130 cflags-$(CONFIG_CPU_R3000) += -march=r3000
131 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
132 cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
133 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
134 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
135 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
136 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
137 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
138 -Wa,-mips32 -Wa,--trap
139 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
140 -Wa,-mips32r2 -Wa,--trap
141 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap
142 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
143 -Wa,-mips64 -Wa,--trap
144 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
145 -Wa,-mips64r2 -Wa,--trap
146 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
147 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
148 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
149 -Wa,--trap
150 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
151 -Wa,--trap
152 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
153 -Wa,--trap
154 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
155 -Wa,--trap
156 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
157 -Wa,--trap
158 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
159 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
160 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
161 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
162 -Wa,--trap
163 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
164 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
165 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
166 endif
167 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
168 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
169 #
170 # binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a
171 # as MIPS64 R1; older versions as just R1. This leaves the possibility open
172 # that GCC might generate R2 code for -march=loongson3a which then is rejected
173 # by GAS. The cc-option can't probe for this behaviour so -march=loongson3a
174 # can't easily be used safely within the kbuild framework.
175 #
176 cflags-$(CONFIG_CPU_LOONGSON3) += \
177 $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
178 -Wa,-mips64r2 -Wa,--trap
179
180 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
181 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
182 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
183
184 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
185 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
186 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
187 # similar directives in the kernel will spam the build logs with the following warnings:
188 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
189 # or
190 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
191 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
192 # been fixed properly.
193 mips-cflags := $(cflags-y)
194 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
195 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
196 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
197 endif
198 ifeq ($(CONFIG_CPU_MICROMIPS),y)
199 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
200 cflags-$(micromips-ase) += -mmicromips
201 endif
202 ifeq ($(CONFIG_CPU_HAS_MSA),y)
203 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
204 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
205 endif
206
207 #
208 # Firmware support
209 #
210 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
211 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
212 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
213 libs-y += arch/mips/fw/lib/
214
215 #
216 # Kernel compression
217 #
218 ifdef SYS_SUPPORTS_ZBOOT
219 COMPRESSION_FNAME = vmlinuz
220 else
221 COMPRESSION_FNAME = vmlinux
222 endif
223
224 #
225 # Board-dependent options and extra files
226 #
227 include arch/mips/Kbuild.platforms
228
229 ifdef CONFIG_PHYSICAL_START
230 load-y = $(CONFIG_PHYSICAL_START)
231 endif
232 entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
233 | grep "\bkernel_entry\b" | cut -f1 -d \ )
234
235 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
236 drivers-$(CONFIG_PCI) += arch/mips/pci/
237
238 #
239 # Automatically detect the build format. By default we choose
240 # the elf format according to the load address.
241 # We can always force a build with a 64-bits symbol format by
242 # passing 'KBUILD_SYM32=no' option to the make's command line.
243 #
244 ifdef CONFIG_64BIT
245 ifndef KBUILD_SYM32
246 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
247 KBUILD_SYM32 = y
248 endif
249 endif
250
251 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
252 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
253 else
254 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
255 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
256 endif
257 endif
258 endif
259
260 KBUILD_AFLAGS += $(cflags-y)
261 KBUILD_CFLAGS += $(cflags-y)
262 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
263 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
264
265 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
266 VMLINUX_ENTRY_ADDRESS=$(entry-y)
267
268 LDFLAGS += -m $(ld-emul)
269
270 ifdef CONFIG_MIPS
271 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
272 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
273 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
274 ifdef CONFIG_64BIT
275 CHECKFLAGS += -m64
276 endif
277 endif
278
279 OBJCOPYFLAGS += --remove-section=.reginfo
280
281 head-y := arch/mips/kernel/head.o
282
283 libs-y += arch/mips/lib/
284 libs-y += arch/mips/math-emu/
285
286 # See arch/mips/Kbuild for content of core part of the kernel
287 core-y += arch/mips/
288
289 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
290
291 # suspend and hibernation support
292 drivers-$(CONFIG_PM) += arch/mips/power/
293
294 # boot image targets (arch/mips/boot/)
295 boot-y := vmlinux.bin
296 boot-y += vmlinux.ecoff
297 boot-y += vmlinux.srec
298 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
299 boot-y += uImage
300 boot-y += uImage.bin
301 boot-y += uImage.bz2
302 boot-y += uImage.gz
303 boot-y += uImage.lzma
304 boot-y += uImage.lzo
305 endif
306
307 # compressed boot image targets (arch/mips/boot/compressed/)
308 bootz-y := vmlinuz
309 bootz-y += vmlinuz.bin
310 bootz-y += vmlinuz.ecoff
311 bootz-y += vmlinuz.srec
312
313 ifdef CONFIG_LASAT
314 rom.bin rom.sw: vmlinux
315 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
316 $(bootvars-y) $@
317 endif
318
319 #
320 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
321 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
322 # convert to ECOFF using elf2ecoff.
323 #
324 quiet_cmd_32 = OBJCOPY $@
325 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
326 vmlinux.32: vmlinux
327 $(call cmd,32)
328
329 #
330 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
331 # ELF files from 32-bit files by conversion.
332 #
333 quiet_cmd_64 = OBJCOPY $@
334 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
335 vmlinux.64: vmlinux
336 $(call cmd,64)
337
338 all: $(all-y)
339
340 # boot
341 $(boot-y): $(vmlinux-32) FORCE
342 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
343 $(bootvars-y) arch/mips/boot/$@
344
345 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
346 # boot/compressed
347 $(bootz-y): $(vmlinux-32) FORCE
348 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
349 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
350 else
351 vmlinuz: FORCE
352 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
353 /bin/false
354 endif
355
356
357 CLEAN_FILES += vmlinux.32 vmlinux.64
358
359 # device-trees
360 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
361
362 %.dtb %.dtb.S %.dtb.o: | scripts
363 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
364
365 PHONY += dtbs
366 dtbs: scripts
367 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
368
369 PHONY += dtbs_install
370 dtbs_install:
371 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
372
373 archprepare:
374 ifdef CONFIG_MIPS32_N32
375 @echo ' Checking missing-syscalls for N32'
376 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
377 endif
378 ifdef CONFIG_MIPS32_O32
379 @echo ' Checking missing-syscalls for O32'
380 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
381 endif
382
383 install:
384 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
385 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
386 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
387 endif
388 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
389 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
390
391 archclean:
392 $(Q)$(MAKE) $(clean)=arch/mips/boot
393 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
394 $(Q)$(MAKE) $(clean)=arch/mips/lasat
395
396 define archhelp
397 echo ' install - install kernel into $(INSTALL_PATH)'
398 echo ' vmlinux.ecoff - ECOFF boot image'
399 echo ' vmlinux.bin - Raw binary boot image'
400 echo ' vmlinux.srec - SREC boot image'
401 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
402 echo ' vmlinuz - Compressed boot(zboot) image'
403 echo ' vmlinuz.ecoff - ECOFF zboot image'
404 echo ' vmlinuz.bin - Raw binary zboot image'
405 echo ' vmlinuz.srec - SREC zboot image'
406 echo ' uImage - U-Boot image'
407 echo ' uImage.bin - U-Boot image (uncompressed)'
408 echo ' uImage.bz2 - U-Boot image (bz2)'
409 echo ' uImage.gz - U-Boot image (gzip)'
410 echo ' uImage.lzma - U-Boot image (lzma)'
411 echo ' uImage.lzo - U-Boot image (lzo)'
412 echo ' dtbs - Device-tree blobs for enabled boards'
413 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
414 echo
415 echo ' These will be default as appropriate for a configured platform.'
416 endef
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