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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
15KBUILD_DEFCONFIG := ip22_defconfig
16
17#
18# Select the object file format to substitute into the linker script.
19#
20ifdef CONFIG_CPU_LITTLE_ENDIAN
2132bit-tool-archpref = mipsel
2264bit-tool-archpref = mips64el
2332bit-bfd = elf32-tradlittlemips
2464bit-bfd = elf64-tradlittlemips
2532bit-emul = elf32ltsmip
2664bit-emul = elf64ltsmip
27else
2832bit-tool-archpref = mips
2964bit-tool-archpref = mips64
3032bit-bfd = elf32-tradbigmips
3164bit-bfd = elf64-tradbigmips
3232bit-emul = elf32btsmip
3364bit-emul = elf64btsmip
34endif
35
36ifdef CONFIG_32BIT
37tool-archpref = $(32bit-tool-archpref)
38UTS_MACHINE := mips
39endif
40ifdef CONFIG_64BIT
41tool-archpref = $(64bit-tool-archpref)
42UTS_MACHINE := mips64
43endif
44
45ifneq ($(SUBARCH),$(ARCH))
46 ifeq ($(CROSS_COMPILE),)
47 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
48 endif
49endif
50
51ifdef CONFIG_FUNCTION_GRAPH_TRACER
52 ifndef KBUILD_MCOUNT_RA_ADDRESS
53 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
54 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
55 endif
56 endif
57endif
58cflags-y += $(call cc-option, -mno-check-zero-division)
59
60ifdef CONFIG_32BIT
61ld-emul = $(32bit-emul)
62vmlinux-32 = vmlinux
63vmlinux-64 = vmlinux.64
64
65cflags-y += -mabi=32
66endif
67
68ifdef CONFIG_64BIT
69ld-emul = $(64bit-emul)
70vmlinux-32 = vmlinux.32
71vmlinux-64 = vmlinux
72
73cflags-y += -mabi=64
74endif
75
76all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
77all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
78all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
79
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 $28 conflicts with
84# the current pointer optimization.
85#
86# The DECStation requires an ECOFF kernel for remote booting, other MIPS
87# machines may also. Since BFD is incredibly buggy with respect to
88# crossformat linking we rely on the elf2ecoff tool for format conversion.
89#
90cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
91cflags-y += -msoft-float
92LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
93KBUILD_AFLAGS_MODULE += -mlong-calls
94KBUILD_CFLAGS_MODULE += -mlong-calls
95
96cflags-y += -ffreestanding
97
98#
99# We explicitly add the endianness specifier if needed, this allows
100# to compile kernels with a toolchain for the other endianness. We
101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
102# when fed the toolchain default!
103#
104# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
106# are used, so we kludge that here. A bug has been filed at
107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
108#
109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
113cflags-$(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) $(predef-le))
115
116cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips)
117cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips)
118
119cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
120 -fno-omit-frame-pointer
121
122ifeq ($(CONFIG_CPU_HAS_MSA),y)
123toolchain-msa := $(call cc-option-yn,-mhard-float -mfp64 -mmsa)
124cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
125endif
126
127#
128# CPU-dependent compiler/assembler options for optimization.
129#
130cflags-$(CONFIG_CPU_R3000) += -march=r3000
131cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
132cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
133cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
134cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
135cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
136cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
137cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
138 -Wa,-mips32 -Wa,--trap
139cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
140 -Wa,-mips32r2 -Wa,--trap
141cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
142 -Wa,-mips64 -Wa,--trap
143cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
144 -Wa,-mips64r2 -Wa,--trap
145cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
146cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
147 -Wa,--trap
148cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
149 -Wa,--trap
150cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
151 -Wa,--trap
152cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
153 -Wa,--trap
154cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1 -mno-mdmx -mno-mips3d,-march=r5000) \
155 -Wa,--trap
156cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
157cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
158 -Wa,--trap
159cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
160ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
161cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
162endif
163cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
164cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
165
166cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
167cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
168cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
169
170ifdef CONFIG_CPU_SB1
171ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
172KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
173KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
174endif
175endif
176
177#
178# Firmware support
179#
180libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc
181libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
182libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
183libs-y += arch/mips/fw/lib/
184
185#
186# Kernel compression
187#
188ifdef SYS_SUPPORTS_ZBOOT
189COMPRESSION_FNAME = vmlinuz
190else
191COMPRESSION_FNAME = vmlinux
192endif
193
194#
195# Board-dependent options and extra files
196#
197include $(srctree)/arch/mips/Kbuild.platforms
198
199ifdef CONFIG_PHYSICAL_START
200load-y = $(CONFIG_PHYSICAL_START)
201endif
202entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
203 | grep "\bkernel_entry\b" | cut -f1 -d \ )
204
205cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
206drivers-$(CONFIG_PCI) += arch/mips/pci/
207
208#
209# Automatically detect the build format. By default we choose
210# the elf format according to the load address.
211# We can always force a build with a 64-bits symbol format by
212# passing 'KBUILD_SYM32=no' option to the make's command line.
213#
214ifdef CONFIG_64BIT
215 ifndef KBUILD_SYM32
216 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
217 KBUILD_SYM32 = y
218 endif
219 endif
220
221 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
222 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
223 else
224 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
225 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
226 endif
227 endif
228endif
229
230KBUILD_AFLAGS += $(cflags-y)
231KBUILD_CFLAGS += $(cflags-y)
232KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
233KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
234
235bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
236 VMLINUX_ENTRY_ADDRESS=$(entry-y)
237
238LDFLAGS += -m $(ld-emul)
239
240ifdef CONFIG_MIPS
241CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
242 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
243 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
244ifdef CONFIG_64BIT
245CHECKFLAGS += -m64
246endif
247endif
248
249OBJCOPYFLAGS += --remove-section=.reginfo
250
251head-y := arch/mips/kernel/head.o
252
253libs-y += arch/mips/lib/
254
255# See arch/mips/Kbuild for content of core part of the kernel
256core-y += arch/mips/
257
258drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
259
260# suspend and hibernation support
261drivers-$(CONFIG_PM) += arch/mips/power/
262
263# boot image targets (arch/mips/boot/)
264boot-y := vmlinux.bin
265boot-y += vmlinux.ecoff
266boot-y += vmlinux.srec
267ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
268boot-y += uImage
269boot-y += uImage.gz
270endif
271
272# compressed boot image targets (arch/mips/boot/compressed/)
273bootz-y := vmlinuz
274bootz-y += vmlinuz.bin
275bootz-y += vmlinuz.ecoff
276bootz-y += vmlinuz.srec
277
278ifdef CONFIG_LASAT
279rom.bin rom.sw: vmlinux
280 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
281 $(bootvars-y) $@
282endif
283
284#
285# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
286# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
287# convert to ECOFF using elf2ecoff.
288#
289quiet_cmd_32 = OBJCOPY $@
290 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
291vmlinux.32: vmlinux
292 $(call cmd,32)
293
294#
295# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
296# ELF files from 32-bit files by conversion.
297#
298quiet_cmd_64 = OBJCOPY $@
299 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
300vmlinux.64: vmlinux
301 $(call cmd,64)
302
303all: $(all-y)
304
305# boot
306$(boot-y): $(vmlinux-32) FORCE
307 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
308 $(bootvars-y) arch/mips/boot/$@
309
310ifdef CONFIG_SYS_SUPPORTS_ZBOOT
311# boot/compressed
312$(bootz-y): $(vmlinux-32) FORCE
313 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
314 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
315else
316vmlinuz: FORCE
317 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
318 /bin/false
319endif
320
321
322CLEAN_FILES += vmlinux.32 vmlinux.64
323
324archprepare:
325ifdef CONFIG_MIPS32_N32
326 @echo ' Checking missing-syscalls for N32'
327 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
328endif
329ifdef CONFIG_MIPS32_O32
330 @echo ' Checking missing-syscalls for O32'
331 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
332endif
333
334install:
335 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
336ifdef CONFIG_SYS_SUPPORTS_ZBOOT
337 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
338endif
339 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
340 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
341
342archclean:
343 $(Q)$(MAKE) $(clean)=arch/mips/boot
344 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
345 $(Q)$(MAKE) $(clean)=arch/mips/lasat
346
347define archhelp
348 echo ' install - install kernel into $(INSTALL_PATH)'
349 echo ' vmlinux.ecoff - ECOFF boot image'
350 echo ' vmlinux.bin - Raw binary boot image'
351 echo ' vmlinux.srec - SREC boot image'
352 echo ' vmlinuz - Compressed boot(zboot) image'
353 echo ' vmlinuz.ecoff - ECOFF zboot image'
354 echo ' vmlinuz.bin - Raw binary zboot image'
355 echo ' vmlinuz.srec - SREC zboot image'
356 echo ' uImage - U-Boot image'
357 echo ' uImage.gz - U-Boot image (gzip)'
358 echo
359 echo ' These will be default as appropriate for a configured platform.'
360endef
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.
12#
13
14archscripts: scripts_basic
15 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
16ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
17 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
18endif
19 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
20
21KBUILD_DEFCONFIG := 32r2el_defconfig
22KBUILD_DTBS := dtbs
23
24#
25# Select the object file format to substitute into the linker script.
26#
27ifdef CONFIG_CPU_LITTLE_ENDIAN
2832bit-tool-archpref = mipsel
2964bit-tool-archpref = mips64el
3032bit-bfd = elf32-tradlittlemips
3164bit-bfd = elf64-tradlittlemips
3232bit-emul = elf32ltsmip
3364bit-emul = elf64ltsmip
34else
3532bit-tool-archpref = mips
3664bit-tool-archpref = mips64
3732bit-bfd = elf32-tradbigmips
3864bit-bfd = elf64-tradbigmips
3932bit-emul = elf32btsmip
4064bit-emul = elf64btsmip
41endif
42
43ifdef CONFIG_32BIT
44tool-archpref = $(32bit-tool-archpref)
45UTS_MACHINE := mips
46endif
47ifdef CONFIG_64BIT
48tool-archpref = $(64bit-tool-archpref)
49UTS_MACHINE := mips64
50endif
51
52ifdef cross_compiling
53 ifeq ($(CROSS_COMPILE),)
54 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
55 endif
56endif
57
58ifdef CONFIG_FUNCTION_GRAPH_TRACER
59 ifndef KBUILD_MCOUNT_RA_ADDRESS
60 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
61 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
62 endif
63 endif
64endif
65cflags-y += $(call cc-option, -mno-check-zero-division)
66
67ifdef CONFIG_32BIT
68ld-emul = $(32bit-emul)
69vmlinux-32 = vmlinux
70vmlinux-64 = vmlinux.64
71
72cflags-y += -mabi=32
73endif
74
75ifdef CONFIG_64BIT
76ld-emul = $(64bit-emul)
77vmlinux-32 = vmlinux.32
78vmlinux-64 = vmlinux
79
80cflags-y += -mabi=64
81endif
82
83all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
84all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
85all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
86
87#
88# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
89# code since it only slows down the whole thing. At some point we might make
90# use of global pointer optimizations but their use of $28 conflicts with
91# the current pointer optimization.
92#
93# The DECStation requires an ECOFF kernel for remote booting, other MIPS
94# machines may also. Since BFD is incredibly buggy with respect to
95# crossformat linking we rely on the elf2ecoff tool for format conversion.
96#
97cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
98cflags-y += -msoft-float
99LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
100KBUILD_AFLAGS_MODULE += -mlong-calls
101KBUILD_CFLAGS_MODULE += -mlong-calls
102
103ifeq ($(CONFIG_RELOCATABLE),y)
104LDFLAGS_vmlinux += --emit-relocs
105endif
106
107#
108# pass -msoft-float to GAS if it supports it. However on newer binutils
109# (specifically newer than 2.24.51.20140728) we then also need to explicitly
110# set ".set hardfloat" in all files which manipulate floating point registers.
111#
112ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
113 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
114endif
115
116cflags-y += -ffreestanding
117
118cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
119cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
120
121cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
122 -fno-omit-frame-pointer
123
124# Some distribution-specific toolchains might pass the -fstack-check
125# option during the build, which adds a simple stack-probe at the beginning
126# of every function. This stack probe is to ensure that there is enough
127# stack space, else a SEGV is generated. This is not desirable for MIPS
128# as kernel stacks are small, placed in unmapped virtual memory, and do not
129# grow when overflowed. Especially on SGI IP27 platforms, this check will
130# lead to a NULL pointer dereference in _raw_spin_lock_irq.
131#
132# In disassembly, this stack probe appears at the top of a function as:
133# sd zero,<offset>(sp)
134# Where <offset> is a negative value.
135#
136cflags-y += -fno-stack-check
137
138# binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
139# supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
140# instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
141# for a description).
142#
143# We disable this in order to prevent the assembler meddling with the
144# instruction that labels refer to, ie. if we label an ll instruction:
145#
146# 1: ll v0, 0(a0)
147#
148# ...then with the assembler fix applied the label may actually point at a sync
149# instruction inserted by the assembler, and if we were using the label in an
150# exception table the table would no longer contain the address of the ll
151# instruction.
152#
153# Avoid this by explicitly disabling that assembler behaviour.
154#
155cflags-y += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
156
157#
158# CPU-dependent compiler/assembler options for optimization.
159#
160cflags-$(CONFIG_CPU_R3000) += -march=r3000
161cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
162cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
163cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
164cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
165cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
166cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
167cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
168cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
169cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
170cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
171cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
172cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
173cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
174cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
175 -Wa,--trap
176cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
177 -Wa,--trap
178cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
179 -Wa,--trap
180cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
181 -Wa,--trap
182cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
183cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
184cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
185 -Wa,--trap
186cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
187ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
188cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
189endif
190cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
191cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
192
193cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
194cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
195cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
196
197# For smartmips configurations, there are hundreds of warnings due to ISA overrides
198# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
199# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
200# similar directives in the kernel will spam the build logs with the following warnings:
201# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
202# or
203# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
204# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
205# been fixed properly.
206mips-cflags := $(cflags-y)
207ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
208smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
209cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
210endif
211ifeq ($(CONFIG_CPU_MICROMIPS),y)
212micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
213cflags-$(micromips-ase) += -mmicromips
214endif
215ifeq ($(CONFIG_CPU_HAS_MSA),y)
216toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
217cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
218endif
219toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
220cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
221# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
222# only warns
223xpa-cflags-y := $(mips-cflags)
224xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
225toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
226cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
227toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
228cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
229toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
230cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
231toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
232cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
233
234#
235# Firmware support
236#
237libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc
238libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
239libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
240libs-y += arch/mips/fw/lib/
241
242#
243# Kernel compression
244#
245ifdef CONFIG_SYS_SUPPORTS_ZBOOT
246COMPRESSION_FNAME = vmlinuz
247else
248COMPRESSION_FNAME = vmlinux
249endif
250
251#
252# Board-dependent options and extra files
253#
254include $(srctree)/arch/mips/Kbuild.platforms
255
256ifdef CONFIG_PHYSICAL_START
257load-y = $(CONFIG_PHYSICAL_START)
258endif
259
260entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
261cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
262drivers-$(CONFIG_PCI) += arch/mips/pci/
263
264#
265# Automatically detect the build format. By default we choose
266# the elf format according to the load address.
267# We can always force a build with a 64-bits symbol format by
268# passing 'KBUILD_SYM32=no' option to the make's command line.
269#
270ifdef CONFIG_64BIT
271 ifndef KBUILD_SYM32
272 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
273 KBUILD_SYM32 = y
274 endif
275 endif
276
277 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
278 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
279 else
280 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
281 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
282 endif
283 endif
284endif
285
286# When linking a 32-bit executable the LLVM linker cannot cope with a
287# 32-bit load address that has been sign-extended to 64 bits. Simply
288# remove the upper 32 bits then, as it is safe to do so with other
289# linkers.
290ifdef CONFIG_64BIT
291 load-ld = $(load-y)
292else
293 load-ld = $(subst 0xffffffff,0x,$(load-y))
294endif
295
296KBUILD_AFLAGS += $(cflags-y)
297KBUILD_CFLAGS += $(cflags-y)
298KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
299KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
300
301bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
302 LINKER_LOAD_ADDRESS=$(load-ld) \
303 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
304 PLATFORM="$(platform-y)" \
305 ITS_INPUTS="$(its-y)"
306ifdef CONFIG_32BIT
307bootvars-y += ADDR_BITS=32
308endif
309ifdef CONFIG_64BIT
310bootvars-y += ADDR_BITS=64
311endif
312
313# This is required to get dwarf unwinding tables into .debug_frame
314# instead of .eh_frame so we don't discard them.
315KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
316
317KBUILD_LDFLAGS += -m $(ld-emul)
318
319ifdef CONFIG_MIPS
320CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
321 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
322 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
323endif
324
325OBJCOPYFLAGS += --remove-section=.reginfo
326
327libs-y += arch/mips/lib/
328libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
329
330drivers-y += arch/mips/crypto/
331
332# suspend and hibernation support
333drivers-$(CONFIG_PM) += arch/mips/power/
334
335# boot image targets (arch/mips/boot/)
336boot-y := vmlinux.bin
337boot-y += vmlinux.ecoff
338boot-y += vmlinux.srec
339boot-y += uImage
340boot-y += uImage.bin
341boot-y += uImage.bz2
342boot-y += uImage.gz
343boot-y += uImage.lzma
344boot-y += uImage.lzo
345boot-y += vmlinux.itb
346boot-y += vmlinux.gz.itb
347boot-y += vmlinux.bz2.itb
348boot-y += vmlinux.lzma.itb
349boot-y += vmlinux.lzo.itb
350
351# compressed boot image targets (arch/mips/boot/compressed/)
352bootz-y := vmlinuz
353bootz-y += vmlinuz.bin
354bootz-y += vmlinuz.ecoff
355bootz-y += vmlinuz.srec
356bootz-y += uzImage.bin
357bootz-y += vmlinuz.itb
358
359#
360# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
361# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
362# convert to ECOFF using elf2ecoff.
363#
364quiet_cmd_32 = OBJCOPY $@
365 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
366vmlinux.32: vmlinux
367 $(call cmd,32)
368
369#
370# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
371# ELF files from 32-bit files by conversion.
372#
373quiet_cmd_64 = OBJCOPY $@
374 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
375vmlinux.64: vmlinux
376 $(call cmd,64)
377
378all: $(all-y) $(KBUILD_DTBS)
379
380# boot
381$(boot-y): $(vmlinux-32) FORCE
382 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
383 $(bootvars-y) arch/mips/boot/$@
384
385ifdef CONFIG_SYS_SUPPORTS_ZBOOT
386# boot/compressed
387$(bootz-y): $(vmlinux-32) FORCE
388 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
389 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
390else
391vmlinuz: FORCE
392 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
393 /bin/false
394endif
395
396
397CLEAN_FILES += vmlinux.32 vmlinux.64
398
399# device-trees
400core-y += arch/mips/boot/dts/
401
402archprepare:
403ifdef CONFIG_MIPS32_N32
404 @$(kecho) ' Checking missing-syscalls for N32'
405 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
406endif
407ifdef CONFIG_MIPS32_O32
408 @$(kecho) ' Checking missing-syscalls for O32'
409 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
410endif
411
412install:
413 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
414ifdef CONFIG_SYS_SUPPORTS_ZBOOT
415 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
416endif
417 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
418 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
419
420archheaders:
421 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
422
423define archhelp
424 echo ' install - install kernel into $(INSTALL_PATH)'
425 echo ' vmlinux.ecoff - ECOFF boot image'
426 echo ' vmlinux.bin - Raw binary boot image'
427 echo ' vmlinux.srec - SREC boot image'
428 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
429 echo ' vmlinuz - Compressed boot(zboot) image'
430 echo ' vmlinuz.ecoff - ECOFF zboot image'
431 echo ' vmlinuz.bin - Raw binary zboot image'
432 echo ' vmlinuz.srec - SREC zboot image'
433 echo ' uImage - U-Boot image'
434 echo ' uImage.bin - U-Boot image (uncompressed)'
435 echo ' uImage.bz2 - U-Boot image (bz2)'
436 echo ' uImage.gz - U-Boot image (gzip)'
437 echo ' uImage.lzma - U-Boot image (lzma)'
438 echo ' uImage.lzo - U-Boot image (lzo)'
439 echo ' uzImage.bin - U-Boot image (self-extracting)'
440 echo
441 echo ' These will be default as appropriate for a configured platform.'
442 echo
443 echo ' If you are targeting a system supported by generic kernels you may'
444 echo ' configure the kernel for a given architecture target like so:'
445 echo
446 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
447 echo
448 echo ' Where BOARDS is some subset of the following:'
449 for board in $(sort $(BOARDS)); do echo " $${board}"; done
450 echo
451 echo ' Specifically the following generic default configurations are'
452 echo ' supported:'
453 echo
454 $(foreach cfg,$(generic_defconfigs),
455 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
456 echo
457 echo ' The following legacy default configurations have been converted to'
458 echo ' generic and can still be used:'
459 echo
460 $(foreach cfg,$(sort $(legacy_defconfigs)),
461 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
462 echo
463 echo ' Otherwise, the following default configurations are available:'
464endef
465
466generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
467generic_defconfigs :=
468
469#
470# If the user generates a generic kernel configuration without specifying a
471# list of boards to include the config fragments for, default to including all
472# available board config fragments.
473#
474ifeq ($(BOARDS),)
475BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
476endif
477
478#
479# Generic kernel configurations which merge generic_defconfig with the
480# appropriate config fragments from arch/mips/configs/generic/, resulting in
481# the ability to easily configure the kernel for a given architecture,
482# endianness & set of boards without duplicating the needed configuration in
483# hundreds of defconfig files.
484#
485define gen_generic_defconfigs
486$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
487target := $(bits)$(rev)$(filter el,$(endian))_defconfig
488generic_defconfigs += $$(target)
489$$(target): $(generic_config_dir)/$(bits)$(rev).config
490$$(target): $(generic_config_dir)/$(endian).config
491)))
492endef
493
494$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
495$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
496
497define describe_generic_defconfig
498$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
499endef
500
501.PHONY: $(generic_defconfigs)
502$(generic_defconfigs):
503 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
504 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
505 grep -Ev '^#'
506 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
507 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
508 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
509 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
510 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
511 "$(origin BOARDS)" $(BOARDS)
512 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
513
514#
515# Prevent generic merge_config rules attempting to merge single fragments
516#
517$(generic_config_dir)/%.config: ;
518
519#
520# Prevent direct use of generic_defconfig, which is intended to be used as the
521# basis of the various ISA-specific targets generated above.
522#
523.PHONY: generic_defconfig
524generic_defconfig:
525 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
526 $(Q)echo "used via an ISA-specific target from the following list:"
527 $(Q)echo
528 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
529 $(Q)echo
530 $(Q)false
531
532#
533# Legacy defconfig compatibility - these targets used to be real defconfigs but
534# now that the boards have been converted to use the generic kernel they are
535# wrappers around the generic rules above.
536#
537legacy_defconfigs += ocelot_defconfig
538ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
539
540legacy_defconfigs += sead3_defconfig
541sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
542
543legacy_defconfigs += sead3micro_defconfig
544sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
545
546legacy_defconfigs += xilfpga_defconfig
547xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
548
549legacy_defconfigs += pistachio_defconfig
550pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
551
552.PHONY: $(legacy_defconfigs)
553$(legacy_defconfigs):
554 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)