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 KBUILD_DEFCONFIG
:= ip22_defconfig
18 # Select the object file format to substitute into the linker script.
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
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
37 tool-archpref
= $(32bit-tool-archpref
)
41 tool-archpref
= $(64bit-tool-archpref
)
45 ifneq ($(SUBARCH
),$(ARCH
))
46 ifeq ($(CROSS_COMPILE
),)
47 CROSS_COMPILE
:= $(call cc-cross-prefix
, $(tool-archpref
)-linux-
$(tool-archpref
)-linux-gnu-
$(tool-archpref
)-unknown-linux-gnu-
)
51 ifdef CONFIG_FUNCTION_GRAPH_TRACER
52 ifndef KBUILD_MCOUNT_RA_ADDRESS
53 ifeq ($(call cc-option-yn
,-mmcount-ra-address
), y
)
54 cflags-y
+= -mmcount-ra-address
-DKBUILD_MCOUNT_RA_ADDRESS
58 cflags-y
+= $(call cc-option
, -mno-check-zero-division
)
61 ld-emul
= $(32bit-emul
)
63 vmlinux-64
= vmlinux
.64
69 ld-emul
= $(64bit-emul
)
70 vmlinux-32
= vmlinux
.32
76 all-
$(CONFIG_BOOT_ELF32
) := $(vmlinux-32
)
77 all-
$(CONFIG_BOOT_ELF64
) := $(vmlinux-64
)
78 all-
$(CONFIG_SYS_SUPPORTS_ZBOOT
)+= vmlinuz
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 $28 conflicts with
84 # the current pointer optimization.
86 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
87 # machines may also. Since BFD is incredibly buggy with respect to
88 # crossformat linking we rely on the elf2ecoff tool for format conversion.
90 cflags-y
+= -G
0 -mno-abicalls
-fno-pic
-pipe
91 cflags-y
+= -msoft-float
92 LDFLAGS_vmlinux
+= -G
0 -static
-n
-nostdlib
93 KBUILD_AFLAGS_MODULE
+= -mlong-calls
94 KBUILD_CFLAGS_MODULE
+= -mlong-calls
97 # pass -msoft-float to GAS if it supports it. However on newer binutils
98 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
99 # set ".set hardfloat" in all files which manipulate floating point registers.
101 ifneq ($(call as-option
,-Wa
$(comma
)-msoft-float
,),)
102 cflags-y
+= -DGAS_HAS_SET_HARDFLOAT
-Wa
,-msoft-float
105 cflags-y
+= -ffreestanding
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!
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.
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
))
125 cflags-
$(CONFIG_SB1XXX_CORELIS
) += $(call cc-option
,-mno-sched-prolog
) \
126 -fno-omit-frame-pointer
128 # CPU-dependent compiler/assembler options for optimization.
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
) \
150 cflags-
$(CONFIG_CPU_R5500
) += $(call cc-option
,-march
=r5500
,-march
=r5000
) \
152 cflags-
$(CONFIG_CPU_NEVADA
) += $(call cc-option
,-march
=rm5200
,-march
=r5000
) \
154 cflags-
$(CONFIG_CPU_RM7000
) += $(call cc-option
,-march
=rm7000
,-march
=r5000
) \
156 cflags-
$(CONFIG_CPU_SB1
) += $(call cc-option
,-march
=sb1
,-march
=r5000
) \
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
) \
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
167 cflags-
$(CONFIG_CAVIUM_CN63XXP1
) += -Wa
,-mfix-cn63xxp1
168 cflags-
$(CONFIG_CPU_BMIPS
) += -march
=mips32
-Wa
,-mips32
-Wa
,--trap
170 cflags-
$(CONFIG_CPU_R4000_WORKAROUNDS
) += $(call cc-option
,-mfix-r4000
,)
171 cflags-
$(CONFIG_CPU_R4400_WORKAROUNDS
) += $(call cc-option
,-mfix-r4400
,)
172 cflags-
$(CONFIG_CPU_DADDI_WORKAROUNDS
) += $(call cc-option
,-mno-daddi
,)
174 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
175 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
176 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
177 # similar directives in the kernel will spam the build logs with the following warnings:
178 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
180 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
181 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
182 # been fixed properly.
183 mips-cflags
:= $(cflags-y
)
184 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS
),y
)
185 smartmips-ase
:= $(call cc-option-yn
,$(mips-cflags
) -msmartmips
)
186 cflags-
$(smartmips-ase
) += -msmartmips
-Wa
,--no-warn
188 ifeq ($(CONFIG_CPU_MICROMIPS
),y
)
189 micromips-ase
:= $(call cc-option-yn
,$(mips-cflags
) -mmicromips
)
190 cflags-
$(micromips-ase
) += -mmicromips
192 ifeq ($(CONFIG_CPU_HAS_MSA
),y
)
193 toolchain-msa
:= $(call cc-option-yn
,$(mips-cflags
) -mhard-float
-mfp64
-Wa
$(comma
)-mmsa
)
194 cflags-
$(toolchain-msa
) += -DTOOLCHAIN_SUPPORTS_MSA
197 cflags-
$(CONFIG_MIPS_COMPACT_BRANCHES_NEVER
) += -mcompact-branches
=never
198 cflags-
$(CONFIG_MIPS_COMPACT_BRANCHES_OPTIMAL
) += -mcompact-branches
=optimal
199 cflags-
$(CONFIG_MIPS_COMPACT_BRANCHES_ALWAYS
) += -mcompact-branches
=always
204 libs-
$(CONFIG_FW_ARC
) += arch
/mips
/fw
/arc
/
205 libs-
$(CONFIG_FW_CFE
) += arch
/mips
/fw
/cfe
/
206 libs-
$(CONFIG_FW_SNIPROM
) += arch
/mips
/fw
/sni
/
207 libs-y
+= arch
/mips
/fw
/lib
/
212 ifdef SYS_SUPPORTS_ZBOOT
213 COMPRESSION_FNAME
= vmlinuz
215 COMPRESSION_FNAME
= vmlinux
219 # Board-dependent options and extra files
221 include arch
/mips
/Kbuild.platforms
223 ifdef CONFIG_PHYSICAL_START
224 load-y
= $(CONFIG_PHYSICAL_START
)
226 entry-y
= 0x
$(shell $(NM
) vmlinux
2>/dev
/null \
227 | grep
"\bkernel_entry\b" | cut
-f1
-d \
)
229 cflags-y
+= -I
$(srctree
)/arch
/mips
/include/asm
/mach-generic
230 drivers-
$(CONFIG_PCI
) += arch
/mips
/pci
/
233 # Automatically detect the build format. By default we choose
234 # the elf format according to the load address.
235 # We can always force a build with a 64-bits symbol format by
236 # passing 'KBUILD_SYM32=no' option to the make's command line.
240 ifeq ($(shell expr
$(load-y
) \
< 0xffffffff80000000), 0)
245 ifeq ($(KBUILD_SYM32
)$(call cc-option-yn
,-msym32
), yy
)
246 cflags-y
+= -msym32
-DKBUILD_64BIT_SYM32
248 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS
), y
)
249 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without
-msym32
)
254 KBUILD_AFLAGS
+= $(cflags-y
)
255 KBUILD_CFLAGS
+= $(cflags-y
)
256 KBUILD_CPPFLAGS
+= -DVMLINUX_LOAD_ADDRESS
=$(load-y
)
257 KBUILD_CPPFLAGS
+= -DDATAOFFSET
=$(if
$(dataoffset-y
),$(dataoffset-y
),0)
259 bootvars-y
= VMLINUX_LOAD_ADDRESS
=$(load-y
) \
260 VMLINUX_ENTRY_ADDRESS
=$(entry-y
)
262 LDFLAGS
+= -m
$(ld-emul
)
265 CHECKFLAGS
+= $(shell $(CC
) $(KBUILD_CFLAGS
) -dM
-E
-x c
/dev
/null | \
266 egrep
-vw
'__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
267 sed
-e
"s/^\#define /-D'/" -e
"s/ /'='/" -e
"s/$$/'/" -e
's/\$$/&&/g')
273 OBJCOPYFLAGS
+= --remove-section
=.reginfo
275 head-y
:= arch
/mips
/kernel
/head.o
277 libs-y
+= arch
/mips
/lib
/
278 libs-y
+= arch
/mips
/math-emu
/
280 # See arch/mips/Kbuild for content of core part of the kernel
283 drivers-
$(CONFIG_OPROFILE
) += arch
/mips
/oprofile
/
285 # suspend and hibernation support
286 drivers-
$(CONFIG_PM
) += arch
/mips
/power
/
288 # boot image targets (arch/mips/boot/)
289 boot-y
:= vmlinux.bin
290 boot-y
+= vmlinux.ecoff
291 boot-y
+= vmlinux.srec
292 ifeq ($(shell expr
$(load-y
) \
< 0xffffffff80000000 2> /dev
/null
), 0)
297 boot-y
+= uImage.lzma
301 # compressed boot image targets (arch/mips/boot/compressed/)
303 bootz-y
+= vmlinuz.bin
304 bootz-y
+= vmlinuz.ecoff
305 bootz-y
+= vmlinuz.srec
308 rom.bin rom.sw
: vmlinux
309 $(Q
)$(MAKE
) $(build
)=arch
/mips
/lasat
/image \
314 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
315 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
316 # convert to ECOFF using elf2ecoff.
318 quiet_cmd_32
= OBJCOPY
$@
319 cmd_32
= $(OBJCOPY
) -O
$(32bit-bfd
) $(OBJCOPYFLAGS
) $< $@
324 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
325 # ELF files from 32-bit files by conversion.
327 quiet_cmd_64
= OBJCOPY
$@
328 cmd_64
= $(OBJCOPY
) -O
$(64bit-bfd
) $(OBJCOPYFLAGS
) $< $@
335 $(boot-y
): $(vmlinux-32
) FORCE
336 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot VMLINUX
=$(vmlinux-32
) \
337 $(bootvars-y
) arch
/mips
/boot
/$@
339 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
341 $(bootz-y
): $(vmlinux-32
) FORCE
342 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot
/compressed \
343 $(bootvars-y
) 32bit-bfd
=$(32bit-bfd
) $@
346 @echo
' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
351 CLEAN_FILES
+= vmlinux
.32 vmlinux
.64
354 core-
$(CONFIG_BUILTIN_DTB
) += arch
/mips
/boot
/dts
/
356 %.dtb
%.dtb.S
%.dtb.o
: | scripts
357 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot
/dts arch
/mips
/boot
/dts
/$@
361 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot
/dts
363 PHONY
+= dtbs_install
365 $(Q
)$(MAKE
) $(dtbinst
)=arch
/mips
/boot
/dts
368 ifdef CONFIG_MIPS32_N32
369 @echo
' Checking missing-syscalls for N32'
370 $(Q
)$(MAKE
) $(build
)=. missing-syscalls missing_syscalls_flags
="-mabi=n32"
372 ifdef CONFIG_MIPS32_O32
373 @echo
' Checking missing-syscalls for O32'
374 $(Q
)$(MAKE
) $(build
)=. missing-syscalls missing_syscalls_flags
="-mabi=32"
378 $(Q
)install -D
-m
755 vmlinux
$(INSTALL_PATH
)/vmlinux-
$(KERNELRELEASE
)
379 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
380 $(Q
)install -D
-m
755 vmlinuz
$(INSTALL_PATH
)/vmlinuz-
$(KERNELRELEASE
)
382 $(Q
)install -D
-m
644 .config
$(INSTALL_PATH
)/config-
$(KERNELRELEASE
)
383 $(Q
)install -D
-m
644 System.map
$(INSTALL_PATH
)/System.map-
$(KERNELRELEASE
)
386 $(Q
)$(MAKE
) $(clean)=arch
/mips
/boot
387 $(Q
)$(MAKE
) $(clean)=arch
/mips
/boot
/compressed
388 $(Q
)$(MAKE
) $(clean)=arch
/mips
/lasat
391 echo
' install - install kernel into $(INSTALL_PATH)'
392 echo
' vmlinux.ecoff - ECOFF boot image'
393 echo
' vmlinux.bin - Raw binary boot image'
394 echo
' vmlinux.srec - SREC boot image'
395 echo
' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
396 echo
' vmlinuz - Compressed boot(zboot) image'
397 echo
' vmlinuz.ecoff - ECOFF zboot image'
398 echo
' vmlinuz.bin - Raw binary zboot image'
399 echo
' vmlinuz.srec - SREC zboot image'
400 echo
' uImage - U-Boot image'
401 echo
' uImage.bin - U-Boot image (uncompressed)'
402 echo
' uImage.bz2 - U-Boot image (bz2)'
403 echo
' uImage.gz - U-Boot image (gzip)'
404 echo
' uImage.lzma - U-Boot image (lzma)'
405 echo
' uImage.lzo - U-Boot image (lzo)'
406 echo
' dtbs - Device-tree blobs for enabled boards'
407 echo
' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
409 echo
' These will be default as appropriate for a configured platform.'