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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
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15KBUILD_DEFCONFIG := ip22_defconfig
16
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17#
18# Select the object file format to substitute into the linker script.
19#
20ifdef CONFIG_CPU_LITTLE_ENDIAN
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2132bit-tool-archpref = mipsel
2264bit-tool-archpref = mips64el
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2332bit-bfd = elf32-tradlittlemips
2464bit-bfd = elf64-tradlittlemips
2532bit-emul = elf32ltsmip
2664bit-emul = elf64ltsmip
27else
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2832bit-tool-archpref = mips
2964bit-tool-archpref = mips64
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3032bit-bfd = elf32-tradbigmips
3164bit-bfd = elf64-tradbigmips
3232bit-emul = elf32btsmip
3364bit-emul = elf64btsmip
34endif
35
875d43e7 36ifdef CONFIG_32BIT
17f690be 37tool-archpref = $(32bit-tool-archpref)
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38UTS_MACHINE := mips
39endif
875d43e7 40ifdef CONFIG_64BIT
17f690be 41tool-archpref = $(64bit-tool-archpref)
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42UTS_MACHINE := mips64
43endif
44
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45ifneq ($(SUBARCH),$(ARCH))
46 ifeq ($(CROSS_COMPILE),)
3247989e 47 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
17f690be 48 endif
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49endif
50
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51ifdef CONFIG_FUNCTION_GRAPH_TRACER
52 ifndef KBUILD_MCOUNT_RA_ADDRESS
53 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
54 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
55 endif
56 endif
57endif
1a4ba061 58cflags-y += $(call cc-option, -mno-check-zero-division)
05e41404 59
8145095c 60ifdef CONFIG_32BIT
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61ld-emul = $(32bit-emul)
62vmlinux-32 = vmlinux
63vmlinux-64 = vmlinux.64
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64
65cflags-y += -mabi=32
8145095c 66endif
1da177e4 67
8145095c 68ifdef CONFIG_64BIT
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69ld-emul = $(64bit-emul)
70vmlinux-32 = vmlinux.32
71vmlinux-64 = vmlinux
72
59b3e8e9 73cflags-y += -mabi=64
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74endif
75
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76all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
77all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
1b93b3c3 78all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
59b3e8e9 79
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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 $28 conflicts with
84# the current pointer optimization.
85#
86# The DECStation requires an ECOFF kernel for remote booting, other MIPS
87# machines may also. Since BFD is incredibly buggy with respect to
88# crossformat linking we rely on the elf2ecoff tool for format conversion.
89#
1da177e4 90cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
6218cf44 91cflags-y += -msoft-float
9f83d839 92LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
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93KBUILD_AFLAGS_MODULE += -mlong-calls
94KBUILD_CFLAGS_MODULE += -mlong-calls
1da177e4 95
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96cflags-y += -ffreestanding
97
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98#
99# We explicitly add the endianness specifier if needed, this allows
100# to compile kernels with a toolchain for the other endianness. We
101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
102# when fed the toolchain default!
103#
f9405412 104# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
59c51591 105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
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106# are used, so we kludge that here. A bug has been filed at
107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
108#
109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
113cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
114cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
f425a6dc 115
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116cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips)
117
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118cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
119 -fno-omit-frame-pointer
1da177e4 120
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121#
122# CPU-dependent compiler/assembler options for optimization.
123#
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124cflags-$(CONFIG_CPU_R3000) += -march=r3000
125cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
126cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
127cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
128cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
129cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
130cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
9200c0b2 131cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
59b3e8e9 132 -Wa,-mips32 -Wa,--trap
9200c0b2 133cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
59b3e8e9 134 -Wa,-mips32r2 -Wa,--trap
9200c0b2 135cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
59b3e8e9 136 -Wa,-mips64 -Wa,--trap
9200c0b2 137cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
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138 -Wa,-mips64r2 -Wa,--trap
139cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
c9e321e0 140cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
1da177e4 141 -Wa,--trap
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142cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
143 -Wa,--trap
c9e321e0 144cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
1da177e4 145 -Wa,--trap
59b3e8e9 146cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
1da177e4 147 -Wa,--trap
59b3e8e9 148cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \
1da177e4 149 -Wa,--trap
59b3e8e9 150cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
1da177e4 151 -Wa,--trap
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152cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
153cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
1da177e4 154 -Wa,--trap
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155cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
156ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
157cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
158endif
1da177e4 159
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160cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
161cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
162cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
163
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164ifdef CONFIG_CPU_SB1
165ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
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166KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
167KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
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168endif
169endif
170
171#
172# Firmware support
173#
2f56cfdd 174libs-$(CONFIG_ARC) += arch/mips/fw/arc/
df78b5c8 175libs-$(CONFIG_CFE) += arch/mips/fw/cfe/
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176libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/
177libs-y += arch/mips/fw/lib/
1da177e4 178
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179#
180# Kernel compression
181#
182ifdef SYS_SUPPORTS_ZBOOT
183COMPRESSION_FNAME = vmlinuz
184else
185COMPRESSION_FNAME = vmlinux
186endif
187
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188#
189# Board-dependent options and extra files
190#
5d25b01c 191include $(srctree)/arch/mips/Kbuild.platforms
7ca5dc14 192
384740dc 193cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
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194drivers-$(CONFIG_PCI) += arch/mips/pci/
195
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196#
197# Automatically detect the build format. By default we choose
198# the elf format according to the load address.
199# We can always force a build with a 64-bits symbol format by
054c51b4 200# passing 'KBUILD_SYM32=no' option to the make's command line.
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201#
202ifdef CONFIG_64BIT
054c51b4 203 ifndef KBUILD_SYM32
adff90a9 204 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
054c51b4 205 KBUILD_SYM32 = y
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206 endif
207 endif
208
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209 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
210 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
211 else
212 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
213 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
e58d95ab 214 endif
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215 endif
216endif
217
222d394d 218KBUILD_AFLAGS += $(cflags-y)
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219KBUILD_CFLAGS += $(cflags-y)
220KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)"
221KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)"
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222
223LDFLAGS += -m $(ld-emul)
224
59b3e8e9 225ifdef CONFIG_MIPS
a0f97e06 226CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
48c35b2d 227 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
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228 sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
229ifdef CONFIG_64BIT
230CHECKFLAGS += -m64
231endif
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232endif
233
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234OBJCOPYFLAGS += --remove-section=.reginfo
235
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236head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o
237
238libs-y += arch/mips/lib/
1da177e4 239
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240# See arch/mips/Kbuild for content of core part of the kernel
241core-y += arch/mips/
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242
243drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
244
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245# suspend and hibernation support
246drivers-$(CONFIG_PM) += arch/mips/power/
247
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248ifdef CONFIG_LASAT
249rom.bin rom.sw: vmlinux
250 $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
251endif
252
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253#
254# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
255# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
256# convert to ECOFF using elf2ecoff.
257#
258vmlinux.32: vmlinux
259 $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
260
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261
262#obj-$(CONFIG_KPROBES) += kprobes.o
263
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264#
265# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
266# ELF files from 32-bit files by conversion.
267#
268vmlinux.64: vmlinux
269 $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
270
8496b401 271all: $(all-y)
1da177e4 272
35eaa1e9 273# boot
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274vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE
275 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
1da177e4 276
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277# boot/compressed
278vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE
279 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
280 VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
281
282
d745866e 283CLEAN_FILES += vmlinux.32 vmlinux.64
1da177e4 284
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285archprepare:
286ifdef CONFIG_MIPS32_N32
287 @echo ' Checking missing-syscalls for N32'
288 $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=n32"
289endif
290ifdef CONFIG_MIPS32_O32
291 @echo ' Checking missing-syscalls for O32'
292 $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32"
293endif
294
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295install:
296 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
1b93b3c3 297 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
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298 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
299 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
300
1da177e4 301archclean:
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302 $(Q)$(MAKE) $(clean)=arch/mips/boot
303 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
304 $(Q)$(MAKE) $(clean)=arch/mips/lasat
1da177e4 305
e7865765 306define archhelp
59968d3b 307 echo ' install - install kernel into $(INSTALL_PATH)'
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308 echo ' vmlinux.ecoff - ECOFF boot image'
309 echo ' vmlinux.bin - Raw binary boot image'
310 echo ' vmlinux.srec - SREC boot image'
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311 echo ' vmlinuz - Compressed boot(zboot) image'
312 echo ' vmlinuz.ecoff - ECOFF zboot image'
313 echo ' vmlinuz.bin - Raw binary zboot image'
314 echo ' vmlinuz.srec - SREC zboot image'
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315 echo
316 echo ' These will be default as apropriate for a configured platform.'
317endef