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
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
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.
15 archscripts: scripts_basic
16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
18 KBUILD_DEFCONFIG := ip22_defconfig
21 # Select the object file format to substitute into the linker script.
23 ifdef CONFIG_CPU_LITTLE_ENDIAN
24 32bit-tool-archpref = mipsel
25 64bit-tool-archpref = mips64el
26 32bit-bfd = elf32-tradlittlemips
27 64bit-bfd = elf64-tradlittlemips
28 32bit-emul = elf32ltsmip
29 64bit-emul = elf64ltsmip
31 32bit-tool-archpref = mips
32 64bit-tool-archpref = mips64
33 32bit-bfd = elf32-tradbigmips
34 64bit-bfd = elf64-tradbigmips
35 32bit-emul = elf32btsmip
36 64bit-emul = elf64btsmip
40 tool-archpref = $(32bit-tool-archpref)
44 tool-archpref = $(64bit-tool-archpref)
48 ifneq ($(SUBARCH),$(ARCH))
49 ifeq ($(CROSS_COMPILE),)
50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
54 ifdef CONFIG_FUNCTION_GRAPH_TRACER
55 ifndef KBUILD_MCOUNT_RA_ADDRESS
56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
61 cflags-y += $(call cc-option, -mno-check-zero-division)
64 ld-emul = $(32bit-emul)
66 vmlinux-64 = vmlinux.64
72 ld-emul = $(64bit-emul)
73 vmlinux-32 = vmlinux.32
79 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
80 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
81 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
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 $28 conflicts with
87 # the current pointer optimization.
89 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
90 # machines may also. Since BFD is incredibly buggy with respect to
91 # crossformat linking we rely on the elf2ecoff tool for format conversion.
93 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
94 cflags-y += -msoft-float
95 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
96 KBUILD_AFLAGS_MODULE += -mlong-calls
97 KBUILD_CFLAGS_MODULE += -mlong-calls
99 ifeq ($(CONFIG_RELOCATABLE),y)
100 LDFLAGS_vmlinux += --emit-relocs
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.
108 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
112 cflags-y += -ffreestanding
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!
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.
125 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
126 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
127 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
128 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
129 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
130 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
132 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
133 -fno-omit-frame-pointer
135 # CPU-dependent compiler/assembler options for optimization.
137 cflags-$(CONFIG_CPU_R3000) += -march=r3000
138 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
139 cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
140 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
141 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
142 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
143 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
144 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
145 -Wa,-mips32 -Wa,--trap
146 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
147 -Wa,-mips32r2 -Wa,--trap
148 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap
149 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
150 -Wa,-mips64 -Wa,--trap
151 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
152 -Wa,-mips64r2 -Wa,--trap
153 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
154 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
155 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
157 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
159 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
161 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
163 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
165 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
166 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
167 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
168 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
170 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
171 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
172 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
174 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
175 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
177 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
178 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
179 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
181 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
182 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
183 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
184 # similar directives in the kernel will spam the build logs with the following warnings:
185 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
187 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
188 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
189 # been fixed properly.
190 mips-cflags := $(cflags-y)
191 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
192 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
193 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
195 ifeq ($(CONFIG_CPU_MICROMIPS),y)
196 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
197 cflags-$(micromips-ase) += -mmicromips
199 ifeq ($(CONFIG_CPU_HAS_MSA),y)
200 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
201 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
203 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
204 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
209 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
210 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
211 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
212 libs-y += arch/mips/fw/lib/
217 ifdef SYS_SUPPORTS_ZBOOT
218 COMPRESSION_FNAME = vmlinuz
220 COMPRESSION_FNAME = vmlinux
224 # Board-dependent options and extra files
226 include arch/mips/Kbuild.platforms
228 ifdef CONFIG_PHYSICAL_START
229 load-y = $(CONFIG_PHYSICAL_START)
231 entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
232 | grep "\bkernel_entry\b" | cut -f1 -d \ )
234 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
235 drivers-$(CONFIG_PCI) += arch/mips/pci/
238 # Automatically detect the build format. By default we choose
239 # the elf format according to the load address.
240 # We can always force a build with a 64-bits symbol format by
241 # passing 'KBUILD_SYM32=no' option to the make's command line.
245 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
250 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
251 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
253 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
254 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
259 # When linking a 32-bit executable the LLVM linker cannot cope with a
260 # 32-bit load address that has been sign-extended to 64 bits. Simply
261 # remove the upper 32 bits then, as it is safe to do so with other
266 load-ld = $(subst 0xffffffff,0x,$(load-y))
269 KBUILD_AFLAGS += $(cflags-y)
270 KBUILD_CFLAGS += $(cflags-y)
271 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
272 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
274 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
275 LINKER_LOAD_ADDRESS=$(load-ld) \
276 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
277 PLATFORM="$(platform-y)"
279 bootvars-y += ADDR_BITS=32
282 bootvars-y += ADDR_BITS=64
285 LDFLAGS += -m $(ld-emul)
288 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
289 egrep -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
290 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
296 OBJCOPYFLAGS += --remove-section=.reginfo
298 head-y := arch/mips/kernel/head.o
300 libs-y += arch/mips/lib/
301 libs-y += arch/mips/math-emu/
303 # See arch/mips/Kbuild for content of core part of the kernel
306 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
308 # suspend and hibernation support
309 drivers-$(CONFIG_PM) += arch/mips/power/
311 # boot image targets (arch/mips/boot/)
312 boot-y := vmlinux.bin
313 boot-y += vmlinux.ecoff
314 boot-y += vmlinux.srec
315 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
320 boot-y += uImage.lzma
323 boot-y += vmlinux.itb
324 boot-y += vmlinux.gz.itb
325 boot-y += vmlinux.bz2.itb
326 boot-y += vmlinux.lzma.itb
327 boot-y += vmlinux.lzo.itb
329 # compressed boot image targets (arch/mips/boot/compressed/)
331 bootz-y += vmlinuz.bin
332 bootz-y += vmlinuz.ecoff
333 bootz-y += vmlinuz.srec
336 rom.bin rom.sw: vmlinux
337 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
341 CMD_RELOCS = arch/mips/boot/tools/relocs
342 quiet_cmd_relocs = RELOCS $<
343 cmd_relocs = $(CMD_RELOCS) $<
346 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
347 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
348 # convert to ECOFF using elf2ecoff.
350 quiet_cmd_32 = OBJCOPY $@
351 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
353 ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy)
354 # Currently, objcopy fails to handle the relocations in the elf64
355 # So the relocs tool must be run here to remove them first
361 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
362 # ELF files from 32-bit files by conversion.
364 quiet_cmd_64 = OBJCOPY $@
365 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
372 $(boot-y): $(vmlinux-32) FORCE
373 ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy)
376 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
377 $(bootvars-y) arch/mips/boot/$@
379 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
381 $(bootz-y): $(vmlinux-32) FORCE
382 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
383 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
386 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
391 CLEAN_FILES += vmlinux.32 vmlinux.64
394 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
396 %.dtb %.dtb.S %.dtb.o: | scripts
397 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
401 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
403 PHONY += dtbs_install
405 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
408 ifdef CONFIG_MIPS32_N32
409 @echo ' Checking missing-syscalls for N32'
410 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
412 ifdef CONFIG_MIPS32_O32
413 @echo ' Checking missing-syscalls for O32'
414 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
418 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
419 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
420 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
422 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
423 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
426 $(Q)$(MAKE) $(clean)=arch/mips/boot
427 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
428 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
429 $(Q)$(MAKE) $(clean)=arch/mips/lasat
432 echo ' install - install kernel into $(INSTALL_PATH)'
433 echo ' vmlinux.ecoff - ECOFF boot image'
434 echo ' vmlinux.bin - Raw binary boot image'
435 echo ' vmlinux.srec - SREC boot image'
436 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
437 echo ' vmlinuz - Compressed boot(zboot) image'
438 echo ' vmlinuz.ecoff - ECOFF zboot image'
439 echo ' vmlinuz.bin - Raw binary zboot image'
440 echo ' vmlinuz.srec - SREC zboot image'
441 echo ' uImage - U-Boot image'
442 echo ' uImage.bin - U-Boot image (uncompressed)'
443 echo ' uImage.bz2 - U-Boot image (bz2)'
444 echo ' uImage.gz - U-Boot image (gzip)'
445 echo ' uImage.lzma - U-Boot image (lzma)'
446 echo ' uImage.lzo - U-Boot image (lzo)'
447 echo ' dtbs - Device-tree blobs for enabled boards'
448 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
450 echo ' These will be default as appropriate for a configured platform.'
452 echo ' If you are targeting a system supported by generic kernels you may'
453 echo ' configure the kernel for a given architecture target like so:'
455 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
457 echo ' Otherwise, the following default configurations are available:'
460 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
461 generic_defconfigs :=
464 # If the user generates a generic kernel configuration without specifying a
465 # list of boards to include the config fragments for, default to including all
466 # available board config fragments.
469 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
473 # Generic kernel configurations which merge generic_defconfig with the
474 # appropriate config fragments from arch/mips/configs/generic/, resulting in
475 # the ability to easily configure the kernel for a given architecture,
476 # endianness & set of boards without duplicating the needed configuration in
477 # hundreds of defconfig files.
479 define gen_generic_defconfigs
480 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
481 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
482 generic_defconfigs += $$(target)
483 $$(target): $(generic_config_dir)/$(bits)$(rev).config
484 $$(target): $(generic_config_dir)/$(endian).config
488 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
489 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
491 .PHONY: $(generic_defconfigs)
492 $(generic_defconfigs):
493 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
494 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
495 $(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
496 $(Q)$(MAKE) olddefconfig
499 # Prevent generic merge_config rules attempting to merge single fragments
501 $(generic_config_dir)/%.config: ;
504 # Legacy defconfig compatibility - these targets used to be real defconfigs but
505 # now that the boards have been converted to use the generic kernel they are
506 # wrappers around the generic rules above.
508 .PHONY: sead3_defconfig
510 $(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3
512 .PHONY: sead3micro_defconfig
513 sead3micro_defconfig:
514 $(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3