kbuild: Fix missing system calls check on mips.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / mips / Makefile
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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 $28 conflicts with
84# the current pointer optimization.
85#
86# The DECStation requires an ECOFF kernel for remote booting, other MIPS
87# machines may also. Since BFD is incredibly buggy with respect to
88# crossformat linking we rely on the elf2ecoff tool for format conversion.
89#
1da177e4 90cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
6218cf44 91cflags-y += -msoft-float
9f83d839 92LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
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93KBUILD_AFLAGS_MODULE += -mlong-calls
94KBUILD_CFLAGS_MODULE += -mlong-calls
1da177e4 95
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96cflags-y += -ffreestanding
97
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98#
99# We explicitly add the endianness specifier if needed, this allows
100# to compile kernels with a toolchain for the other endianness. We
101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
102# when fed the toolchain default!
103#
25985edc 104# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
59c51591 105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
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106# are used, so we kludge that here. A bug has been filed at
107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
108#
109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
113cflags-$(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-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
158endif
c9941158 159cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
1da177e4 160
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161cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
162cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
163cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
164
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165ifdef CONFIG_CPU_SB1
166ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
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167KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
168KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
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169endif
170endif
171
172#
173# Firmware support
174#
2f56cfdd 175libs-$(CONFIG_ARC) += arch/mips/fw/arc/
df78b5c8 176libs-$(CONFIG_CFE) += arch/mips/fw/cfe/
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177libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/
178libs-y += arch/mips/fw/lib/
1da177e4 179
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180#
181# Kernel compression
182#
183ifdef SYS_SUPPORTS_ZBOOT
184COMPRESSION_FNAME = vmlinuz
185else
186COMPRESSION_FNAME = vmlinux
187endif
188
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189#
190# Board-dependent options and extra files
191#
5d25b01c 192include $(srctree)/arch/mips/Kbuild.platforms
7ca5dc14 193
384740dc 194cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
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195drivers-$(CONFIG_PCI) += arch/mips/pci/
196
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197#
198# Automatically detect the build format. By default we choose
199# the elf format according to the load address.
200# We can always force a build with a 64-bits symbol format by
054c51b4 201# passing 'KBUILD_SYM32=no' option to the make's command line.
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202#
203ifdef CONFIG_64BIT
054c51b4 204 ifndef KBUILD_SYM32
adff90a9 205 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
054c51b4 206 KBUILD_SYM32 = y
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207 endif
208 endif
209
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210 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
211 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
212 else
213 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
214 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
e58d95ab 215 endif
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216 endif
217endif
218
222d394d 219KBUILD_AFLAGS += $(cflags-y)
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220KBUILD_CFLAGS += $(cflags-y)
221KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)"
222KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)"
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223
224LDFLAGS += -m $(ld-emul)
225
59b3e8e9 226ifdef CONFIG_MIPS
a0f97e06 227CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
48c35b2d 228 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
08fa624f 229 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
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230ifdef CONFIG_64BIT
231CHECKFLAGS += -m64
232endif
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233endif
234
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235OBJCOPYFLAGS += --remove-section=.reginfo
236
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237head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o
238
239libs-y += arch/mips/lib/
1da177e4 240
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241# See arch/mips/Kbuild for content of core part of the kernel
242core-y += arch/mips/
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243
244drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
245
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246# suspend and hibernation support
247drivers-$(CONFIG_PM) += arch/mips/power/
248
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249ifdef CONFIG_LASAT
250rom.bin rom.sw: vmlinux
251 $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
252endif
253
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254#
255# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
256# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
257# convert to ECOFF using elf2ecoff.
258#
259vmlinux.32: vmlinux
260 $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
261
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262
263#obj-$(CONFIG_KPROBES) += kprobes.o
264
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265#
266# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
267# ELF files from 32-bit files by conversion.
268#
269vmlinux.64: vmlinux
270 $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
271
8496b401 272all: $(all-y)
1da177e4 273
35eaa1e9 274# boot
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275vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE
276 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
1da177e4 277
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278# boot/compressed
279vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE
280 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
281 VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
282
283
d745866e 284CLEAN_FILES += vmlinux.32 vmlinux.64
1da177e4 285
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286archprepare:
287ifdef CONFIG_MIPS32_N32
288 @echo ' Checking missing-syscalls for N32'
44656fa0 289 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
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290endif
291ifdef CONFIG_MIPS32_O32
292 @echo ' Checking missing-syscalls for O32'
44656fa0 293 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
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294endif
295
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296install:
297 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
d9beeeca 298ifdef CONFIG_SYS_SUPPORTS_ZBOOT
1b93b3c3 299 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
d9beeeca 300endif
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301 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
302 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
303
1da177e4 304archclean:
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305 $(Q)$(MAKE) $(clean)=arch/mips/boot
306 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
307 $(Q)$(MAKE) $(clean)=arch/mips/lasat
1da177e4 308
e7865765 309define archhelp
59968d3b 310 echo ' install - install kernel into $(INSTALL_PATH)'
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311 echo ' vmlinux.ecoff - ECOFF boot image'
312 echo ' vmlinux.bin - Raw binary boot image'
313 echo ' vmlinux.srec - SREC boot image'
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314 echo ' vmlinuz - Compressed boot(zboot) image'
315 echo ' vmlinuz.ecoff - ECOFF zboot image'
316 echo ' vmlinuz.bin - Raw binary zboot image'
317 echo ' vmlinuz.srec - SREC zboot image'
e7865765 318 echo
25985edc 319 echo ' These will be default as appropriate for a configured platform.'
e7865765 320endef