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
96 cflags-y
+= -ffreestanding
99 # We explicitly add the endianness specifier if needed, this allows
100 # to compile kernels with a toolchain for the other endianness. We
101 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
102 # when fed the toolchain default!
104 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
105 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
106 # are used, so we kludge that here. A bug has been filed at
107 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
109 undef-all
+= -UMIPSEB
-U_MIPSEB
-U__MIPSEB
-U__MIPSEB__
110 undef-all
+= -UMIPSEL
-U_MIPSEL
-U__MIPSEL
-U__MIPSEL__
111 predef-be
+= -DMIPSEB
-D_MIPSEB
-D__MIPSEB
-D__MIPSEB__
112 predef-le
+= -DMIPSEL
-D_MIPSEL
-D__MIPSEL
-D__MIPSEL__
113 cflags-
$(CONFIG_CPU_BIG_ENDIAN
) += $(shell $(CC
) -dumpmachine |grep
-q
'mips.*el-.*' && echo
-EB
$(undef-all
) $(predef-be
))
114 cflags-
$(CONFIG_CPU_LITTLE_ENDIAN
) += $(shell $(CC
) -dumpmachine |grep
-q
'mips.*el-.*' || echo
-EL
$(undef-all
) $(predef-le
))
116 cflags-
$(CONFIG_CPU_HAS_SMARTMIPS
) += $(call cc-option
,-msmartmips
)
117 cflags-
$(CONFIG_CPU_MICROMIPS
) += $(call cc-option
,-mmicromips
-mno-jals
)
119 cflags-
$(CONFIG_SB1XXX_CORELIS
) += $(call cc-option
,-mno-sched-prolog
) \
120 -fno-omit-frame-pointer
123 # CPU-dependent compiler/assembler options for optimization.
125 cflags-
$(CONFIG_CPU_R3000
) += -march
=r3000
126 cflags-
$(CONFIG_CPU_TX39XX
) += -march
=r3900
127 cflags-
$(CONFIG_CPU_R6000
) += -march
=r6000
-Wa
,--trap
128 cflags-
$(CONFIG_CPU_R4300
) += -march
=r4300
-Wa
,--trap
129 cflags-
$(CONFIG_CPU_VR41XX
) += -march
=r4100
-Wa
,--trap
130 cflags-
$(CONFIG_CPU_R4X00
) += -march
=r4600
-Wa
,--trap
131 cflags-
$(CONFIG_CPU_TX49XX
) += -march
=r4600
-Wa
,--trap
132 cflags-
$(CONFIG_CPU_MIPS32_R1
) += $(call cc-option
,-march
=mips32
,-mips32
-U_MIPS_ISA
-D_MIPS_ISA
=_MIPS_ISA_MIPS32
) \
133 -Wa
,-mips32
-Wa
,--trap
134 cflags-
$(CONFIG_CPU_MIPS32_R2
) += $(call cc-option
,-march
=mips32r2
,-mips32r2
-U_MIPS_ISA
-D_MIPS_ISA
=_MIPS_ISA_MIPS32
) \
135 -Wa
,-mips32r2
-Wa
,--trap
136 cflags-
$(CONFIG_CPU_MIPS64_R1
) += $(call cc-option
,-march
=mips64
,-mips64
-U_MIPS_ISA
-D_MIPS_ISA
=_MIPS_ISA_MIPS64
) \
137 -Wa
,-mips64
-Wa
,--trap
138 cflags-
$(CONFIG_CPU_MIPS64_R2
) += $(call cc-option
,-march
=mips64r2
,-mips64r2
-U_MIPS_ISA
-D_MIPS_ISA
=_MIPS_ISA_MIPS64
) \
139 -Wa
,-mips64r2
-Wa
,--trap
140 cflags-
$(CONFIG_CPU_R5000
) += -march
=r5000
-Wa
,--trap
141 cflags-
$(CONFIG_CPU_R5432
) += $(call cc-option
,-march
=r5400
,-march
=r5000
) \
143 cflags-
$(CONFIG_CPU_R5500
) += $(call cc-option
,-march
=r5500
,-march
=r5000
) \
145 cflags-
$(CONFIG_CPU_NEVADA
) += $(call cc-option
,-march
=rm5200
,-march
=r5000
) \
147 cflags-
$(CONFIG_CPU_RM7000
) += $(call cc-option
,-march
=rm7000
,-march
=r5000
) \
149 cflags-
$(CONFIG_CPU_SB1
) += $(call cc-option
,-march
=sb1
,-march
=r5000
) \
151 cflags-
$(CONFIG_CPU_R8000
) += -march
=r8000
-Wa
,--trap
152 cflags-
$(CONFIG_CPU_R10000
) += $(call cc-option
,-march
=r10000
,-march
=r8000
) \
154 cflags-
$(CONFIG_CPU_CAVIUM_OCTEON
) += $(call cc-option
,-march
=octeon
) -Wa
,--trap
155 ifeq (,$(findstring march
=octeon
, $(cflags-
$(CONFIG_CPU_CAVIUM_OCTEON
))))
156 cflags-
$(CONFIG_CPU_CAVIUM_OCTEON
) += -Wa
,-march
=octeon
158 cflags-
$(CONFIG_CAVIUM_CN63XXP1
) += -Wa
,-mfix-cn63xxp1
159 cflags-
$(CONFIG_CPU_BMIPS
) += -march
=mips32
-Wa
,-mips32
-Wa
,--trap
161 cflags-
$(CONFIG_CPU_R4000_WORKAROUNDS
) += $(call cc-option
,-mfix-r4000
,)
162 cflags-
$(CONFIG_CPU_R4400_WORKAROUNDS
) += $(call cc-option
,-mfix-r4400
,)
163 cflags-
$(CONFIG_CPU_DADDI_WORKAROUNDS
) += $(call cc-option
,-mno-daddi
,)
166 ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
167 KBUILD_AFLAGS_MODULE
+= -msb1-pass1-workarounds
168 KBUILD_CFLAGS_MODULE
+= -msb1-pass1-workarounds
175 libs-
$(CONFIG_FW_ARC
) += arch
/mips
/fw
/arc
/
176 libs-
$(CONFIG_FW_CFE
) += arch
/mips
/fw
/cfe
/
177 libs-
$(CONFIG_FW_SNIPROM
) += arch
/mips
/fw
/sni
/
178 libs-y
+= arch
/mips
/fw
/lib
/
183 ifdef SYS_SUPPORTS_ZBOOT
184 COMPRESSION_FNAME
= vmlinuz
186 COMPRESSION_FNAME
= vmlinux
190 # Board-dependent options and extra files
192 include $(srctree
)/arch
/mips
/Kbuild.platforms
194 ifdef CONFIG_PHYSICAL_START
195 load-y
= $(CONFIG_PHYSICAL_START
)
197 entry-y
= 0x
$(shell $(NM
) vmlinux
2>/dev
/null \
198 | grep
"\bkernel_entry\b" | cut
-f1
-d \
)
200 cflags-y
+= -I
$(srctree
)/arch
/mips
/include/asm
/mach-generic
201 drivers-
$(CONFIG_PCI
) += arch
/mips
/pci
/
204 # Automatically detect the build format. By default we choose
205 # the elf format according to the load address.
206 # We can always force a build with a 64-bits symbol format by
207 # passing 'KBUILD_SYM32=no' option to the make's command line.
211 ifeq ($(shell expr
$(load-y
) \
< 0xffffffff80000000), 0)
216 ifeq ($(KBUILD_SYM32
)$(call cc-option-yn
,-msym32
), yy
)
217 cflags-y
+= -msym32
-DKBUILD_64BIT_SYM32
219 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS
), y
)
220 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without
-msym32
)
225 KBUILD_AFLAGS
+= $(cflags-y
)
226 KBUILD_CFLAGS
+= $(cflags-y
)
227 KBUILD_CPPFLAGS
+= -DVMLINUX_LOAD_ADDRESS
=$(load-y
)
228 KBUILD_CPPFLAGS
+= -DDATAOFFSET
=$(if
$(dataoffset-y
),$(dataoffset-y
),0)
230 bootvars-y
= VMLINUX_LOAD_ADDRESS
=$(load-y
) \
231 VMLINUX_ENTRY_ADDRESS
=$(entry-y
)
233 LDFLAGS
+= -m
$(ld-emul
)
235 ifdef CONFIG_CC_STACKPROTECTOR
236 KBUILD_CFLAGS
+= -fstack-protector
240 CHECKFLAGS
+= $(shell $(CC
) $(KBUILD_CFLAGS
) -dM
-E
-x c
/dev
/null | \
241 egrep
-vw
'__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
242 sed
-e
"s/^\#define /-D'/" -e
"s/ /'='/" -e
"s/$$/'/")
248 OBJCOPYFLAGS
+= --remove-section
=.reginfo
250 head-y
:= arch
/mips
/kernel
/head.o
252 libs-y
+= arch
/mips
/lib
/
254 # See arch/mips/Kbuild for content of core part of the kernel
257 drivers-
$(CONFIG_OPROFILE
) += arch
/mips
/oprofile
/
259 # suspend and hibernation support
260 drivers-
$(CONFIG_PM
) += arch
/mips
/power
/
262 # boot image targets (arch/mips/boot/)
263 boot-y
:= vmlinux.bin
264 boot-y
+= vmlinux.ecoff
265 boot-y
+= vmlinux.srec
266 ifeq ($(shell expr
$(load-y
) \
< 0xffffffff80000000 2> /dev
/null
), 0)
271 # compressed boot image targets (arch/mips/boot/compressed/)
273 bootz-y
+= vmlinuz.bin
274 bootz-y
+= vmlinuz.ecoff
275 bootz-y
+= vmlinuz.srec
278 rom.bin rom.sw
: vmlinux
279 $(Q
)$(MAKE
) $(build
)=arch
/mips
/lasat
/image \
284 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
285 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
286 # convert to ECOFF using elf2ecoff.
289 $(OBJCOPY
) -O
$(32bit-bfd
) $(OBJCOPYFLAGS
) $< $@
292 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
293 # ELF files from 32-bit files by conversion.
296 $(OBJCOPY
) -O
$(64bit-bfd
) $(OBJCOPYFLAGS
) $< $@
301 $(boot-y
): $(vmlinux-32
) FORCE
302 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot VMLINUX
=$(vmlinux-32
) \
303 $(bootvars-y
) arch
/mips
/boot
/$@
306 $(bootz-y
): $(vmlinux-32
) FORCE
307 $(Q
)$(MAKE
) $(build
)=arch
/mips
/boot
/compressed \
308 $(bootvars-y
) 32bit-bfd
=$(32bit-bfd
) $@
311 CLEAN_FILES
+= vmlinux
.32 vmlinux
.64
314 ifdef CONFIG_MIPS32_N32
315 @echo
' Checking missing-syscalls for N32'
316 $(Q
)$(MAKE
) $(build
)=. missing-syscalls missing_syscalls_flags
="-mabi=n32"
318 ifdef CONFIG_MIPS32_O32
319 @echo
' Checking missing-syscalls for O32'
320 $(Q
)$(MAKE
) $(build
)=. missing-syscalls missing_syscalls_flags
="-mabi=32"
324 $(Q
)install -D
-m
755 vmlinux
$(INSTALL_PATH
)/vmlinux-
$(KERNELRELEASE
)
325 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
326 $(Q
)install -D
-m
755 vmlinuz
$(INSTALL_PATH
)/vmlinuz-
$(KERNELRELEASE
)
328 $(Q
)install -D
-m
644 .config
$(INSTALL_PATH
)/config-
$(KERNELRELEASE
)
329 $(Q
)install -D
-m
644 System.map
$(INSTALL_PATH
)/System.map-
$(KERNELRELEASE
)
332 $(Q
)$(MAKE
) $(clean)=arch
/mips
/boot
333 $(Q
)$(MAKE
) $(clean)=arch
/mips
/boot
/compressed
334 $(Q
)$(MAKE
) $(clean)=arch
/mips
/lasat
337 echo
' install - install kernel into $(INSTALL_PATH)'
338 echo
' vmlinux.ecoff - ECOFF boot image'
339 echo
' vmlinux.bin - Raw binary boot image'
340 echo
' vmlinux.srec - SREC boot image'
341 echo
' vmlinuz - Compressed boot(zboot) image'
342 echo
' vmlinuz.ecoff - ECOFF zboot image'
343 echo
' vmlinuz.bin - Raw binary zboot image'
344 echo
' vmlinuz.srec - SREC zboot image'
345 echo
' uImage - U-Boot image'
346 echo
' uImage.gz - U-Boot image (gzip)'
348 echo
' These will be default as appropriate for a configured platform.'