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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. Remember to do have actions
12# for "archclean" cleaning up for this architecture.
13#
14
15archscripts: scripts_basic
16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
17
18KBUILD_DEFCONFIG := ip22_defconfig
19
20#
21# Select the object file format to substitute into the linker script.
22#
23ifdef CONFIG_CPU_LITTLE_ENDIAN
2432bit-tool-archpref = mipsel
2564bit-tool-archpref = mips64el
2632bit-bfd = elf32-tradlittlemips
2764bit-bfd = elf64-tradlittlemips
2832bit-emul = elf32ltsmip
2964bit-emul = elf64ltsmip
30else
3132bit-tool-archpref = mips
3264bit-tool-archpref = mips64
3332bit-bfd = elf32-tradbigmips
3464bit-bfd = elf64-tradbigmips
3532bit-emul = elf32btsmip
3664bit-emul = elf64btsmip
37endif
38
39ifdef CONFIG_32BIT
40tool-archpref = $(32bit-tool-archpref)
41UTS_MACHINE := mips
42endif
43ifdef CONFIG_64BIT
44tool-archpref = $(64bit-tool-archpref)
45UTS_MACHINE := mips64
46endif
47
48ifneq ($(SUBARCH),$(ARCH))
49 ifeq ($(CROSS_COMPILE),)
50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
51 endif
52endif
53
54ifdef CONFIG_FUNCTION_GRAPH_TRACER
55 ifndef KBUILD_MCOUNT_RA_ADDRESS
56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
58 endif
59 endif
60endif
61cflags-y += $(call cc-option, -mno-check-zero-division)
62
63ifdef CONFIG_32BIT
64ld-emul = $(32bit-emul)
65vmlinux-32 = vmlinux
66vmlinux-64 = vmlinux.64
67
68cflags-y += -mabi=32
69endif
70
71ifdef CONFIG_64BIT
72ld-emul = $(64bit-emul)
73vmlinux-32 = vmlinux.32
74vmlinux-64 = vmlinux
75
76cflags-y += -mabi=64
77endif
78
79all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
80all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
81all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
82
83#
84# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
85# code since it only slows down the whole thing. At some point we might make
86# use of global pointer optimizations but their use of $28 conflicts with
87# the current pointer optimization.
88#
89# The DECStation requires an ECOFF kernel for remote booting, other MIPS
90# machines may also. Since BFD is incredibly buggy with respect to
91# crossformat linking we rely on the elf2ecoff tool for format conversion.
92#
93cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
94cflags-y += -msoft-float
95LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
96KBUILD_AFLAGS_MODULE += -mlong-calls
97KBUILD_CFLAGS_MODULE += -mlong-calls
98
99ifeq ($(CONFIG_RELOCATABLE),y)
100LDFLAGS_vmlinux += --emit-relocs
101endif
102
103#
104# pass -msoft-float to GAS if it supports it. However on newer binutils
105# (specifically newer than 2.24.51.20140728) we then also need to explicitly
106# set ".set hardfloat" in all files which manipulate floating point registers.
107#
108ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
110endif
111
112cflags-y += -ffreestanding
113
114#
115# We explicitly add the endianness specifier if needed, this allows
116# to compile kernels with a toolchain for the other endianness. We
117# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
118# when fed the toolchain default!
119#
120# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
121# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
122# are used, so we kludge that here. A bug has been filed at
123# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
124#
125undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
126undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
127predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
128predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
129cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
130cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
131
132cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
133 -fno-omit-frame-pointer
134#
135# CPU-dependent compiler/assembler options for optimization.
136#
137cflags-$(CONFIG_CPU_R3000) += -march=r3000
138cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
139cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
140cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
141cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
142cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
143cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
144cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
145 -Wa,-mips32 -Wa,--trap
146cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
147 -Wa,-mips32r2 -Wa,--trap
148cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap
149cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
150 -Wa,-mips64 -Wa,--trap
151cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
152 -Wa,-mips64r2 -Wa,--trap
153cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
154cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
155cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
156 -Wa,--trap
157cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
158 -Wa,--trap
159cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
160 -Wa,--trap
161cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
162 -Wa,--trap
163cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
164 -Wa,--trap
165cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
166cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
167cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
168cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
169 -Wa,--trap
170cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
171ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
172cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
173endif
174cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
175cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
176
177cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
178cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
179cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
180
181# For smartmips configurations, there are hundreds of warnings due to ISA overrides
182# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
183# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
184# similar directives in the kernel will spam the build logs with the following warnings:
185# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
186# or
187# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
188# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
189# been fixed properly.
190mips-cflags := $(cflags-y)
191ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
192smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
193cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
194endif
195ifeq ($(CONFIG_CPU_MICROMIPS),y)
196micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
197cflags-$(micromips-ase) += -mmicromips
198endif
199ifeq ($(CONFIG_CPU_HAS_MSA),y)
200toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
201cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
202endif
203toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
204cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
205
206#
207# Firmware support
208#
209libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc
210libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
211libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
212libs-y += arch/mips/fw/lib/
213
214#
215# Kernel compression
216#
217ifdef SYS_SUPPORTS_ZBOOT
218COMPRESSION_FNAME = vmlinuz
219else
220COMPRESSION_FNAME = vmlinux
221endif
222
223#
224# Board-dependent options and extra files
225#
226include arch/mips/Kbuild.platforms
227
228ifdef CONFIG_PHYSICAL_START
229load-y = $(CONFIG_PHYSICAL_START)
230endif
231entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
232 | grep "\bkernel_entry\b" | cut -f1 -d \ )
233
234cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
235drivers-$(CONFIG_PCI) += arch/mips/pci/
236
237#
238# Automatically detect the build format. By default we choose
239# the elf format according to the load address.
240# We can always force a build with a 64-bits symbol format by
241# passing 'KBUILD_SYM32=no' option to the make's command line.
242#
243ifdef CONFIG_64BIT
244 ifndef KBUILD_SYM32
245 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
246 KBUILD_SYM32 = y
247 endif
248 endif
249
250 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
251 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
252 else
253 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
254 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
255 endif
256 endif
257endif
258
259KBUILD_AFLAGS += $(cflags-y)
260KBUILD_CFLAGS += $(cflags-y)
261KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
262KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
263
264bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
265 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
266 PLATFORM="$(platform-y)"
267ifdef CONFIG_32BIT
268bootvars-y += ADDR_BITS=32
269endif
270ifdef CONFIG_64BIT
271bootvars-y += ADDR_BITS=64
272endif
273
274LDFLAGS += -m $(ld-emul)
275
276ifdef CONFIG_MIPS
277CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
278 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
279 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
280ifdef CONFIG_64BIT
281CHECKFLAGS += -m64
282endif
283endif
284
285OBJCOPYFLAGS += --remove-section=.reginfo
286
287head-y := arch/mips/kernel/head.o
288
289libs-y += arch/mips/lib/
290libs-y += arch/mips/math-emu/
291
292# See arch/mips/Kbuild for content of core part of the kernel
293core-y += arch/mips/
294
295drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
296
297# suspend and hibernation support
298drivers-$(CONFIG_PM) += arch/mips/power/
299
300# boot image targets (arch/mips/boot/)
301boot-y := vmlinux.bin
302boot-y += vmlinux.ecoff
303boot-y += vmlinux.srec
304ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
305boot-y += uImage
306boot-y += uImage.bin
307boot-y += uImage.bz2
308boot-y += uImage.gz
309boot-y += uImage.lzma
310boot-y += uImage.lzo
311endif
312boot-y += vmlinux.itb
313boot-y += vmlinux.gz.itb
314boot-y += vmlinux.bz2.itb
315boot-y += vmlinux.lzma.itb
316boot-y += vmlinux.lzo.itb
317
318# compressed boot image targets (arch/mips/boot/compressed/)
319bootz-y := vmlinuz
320bootz-y += vmlinuz.bin
321bootz-y += vmlinuz.ecoff
322bootz-y += vmlinuz.srec
323
324ifdef CONFIG_LASAT
325rom.bin rom.sw: vmlinux
326 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
327 $(bootvars-y) $@
328endif
329
330CMD_RELOCS = arch/mips/boot/tools/relocs
331quiet_cmd_relocs = RELOCS $<
332 cmd_relocs = $(CMD_RELOCS) $<
333
334#
335# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
336# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
337# convert to ECOFF using elf2ecoff.
338#
339quiet_cmd_32 = OBJCOPY $@
340 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
341vmlinux.32: vmlinux
342ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy)
343# Currently, objcopy fails to handle the relocations in the elf64
344# So the relocs tool must be run here to remove them first
345 $(call cmd,relocs)
346endif
347 $(call cmd,32)
348
349#
350# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
351# ELF files from 32-bit files by conversion.
352#
353quiet_cmd_64 = OBJCOPY $@
354 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
355vmlinux.64: vmlinux
356 $(call cmd,64)
357
358all: $(all-y)
359
360# boot
361$(boot-y): $(vmlinux-32) FORCE
362ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy)
363 $(call cmd,relocs)
364endif
365 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
366 $(bootvars-y) arch/mips/boot/$@
367
368ifdef CONFIG_SYS_SUPPORTS_ZBOOT
369# boot/compressed
370$(bootz-y): $(vmlinux-32) FORCE
371 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
372 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
373else
374vmlinuz: FORCE
375 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
376 /bin/false
377endif
378
379
380CLEAN_FILES += vmlinux.32 vmlinux.64
381
382# device-trees
383core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
384
385%.dtb %.dtb.S %.dtb.o: | scripts
386 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
387
388PHONY += dtbs
389dtbs: scripts
390 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
391
392PHONY += dtbs_install
393dtbs_install:
394 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
395
396archprepare:
397ifdef CONFIG_MIPS32_N32
398 @echo ' Checking missing-syscalls for N32'
399 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
400endif
401ifdef CONFIG_MIPS32_O32
402 @echo ' Checking missing-syscalls for O32'
403 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
404endif
405
406install:
407 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
408ifdef CONFIG_SYS_SUPPORTS_ZBOOT
409 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
410endif
411 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
412 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
413
414archclean:
415 $(Q)$(MAKE) $(clean)=arch/mips/boot
416 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
417 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
418 $(Q)$(MAKE) $(clean)=arch/mips/lasat
419
420define archhelp
421 echo ' install - install kernel into $(INSTALL_PATH)'
422 echo ' vmlinux.ecoff - ECOFF boot image'
423 echo ' vmlinux.bin - Raw binary boot image'
424 echo ' vmlinux.srec - SREC boot image'
425 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
426 echo ' vmlinuz - Compressed boot(zboot) image'
427 echo ' vmlinuz.ecoff - ECOFF zboot image'
428 echo ' vmlinuz.bin - Raw binary zboot image'
429 echo ' vmlinuz.srec - SREC zboot image'
430 echo ' uImage - U-Boot image'
431 echo ' uImage.bin - U-Boot image (uncompressed)'
432 echo ' uImage.bz2 - U-Boot image (bz2)'
433 echo ' uImage.gz - U-Boot image (gzip)'
434 echo ' uImage.lzma - U-Boot image (lzma)'
435 echo ' uImage.lzo - U-Boot image (lzo)'
436 echo ' dtbs - Device-tree blobs for enabled boards'
437 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
438 echo
439 echo ' These will be default as appropriate for a configured platform.'
440 echo
441 echo ' If you are targeting a system supported by generic kernels you may'
442 echo ' configure the kernel for a given architecture target like so:'
443 echo
444 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
445 echo
446 echo ' Otherwise, the following default configurations are available:'
447endef
448
449generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
450generic_defconfigs :=
451
452#
453# If the user generates a generic kernel configuration without specifying a
454# list of boards to include the config fragments for, default to including all
455# available board config fragments.
456#
457ifeq ($(BOARDS),)
458BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
459endif
460
461#
462# Generic kernel configurations which merge generic_defconfig with the
463# appropriate config fragments from arch/mips/configs/generic/, resulting in
464# the ability to easily configure the kernel for a given architecture,
465# endianness & set of boards without duplicating the needed configuration in
466# hundreds of defconfig files.
467#
468define gen_generic_defconfigs
469$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
470target := $(bits)$(rev)$(filter el,$(endian))_defconfig
471generic_defconfigs += $$(target)
472$$(target): $(generic_config_dir)/$(bits)$(rev).config
473$$(target): $(generic_config_dir)/$(endian).config
474)))
475endef
476
477$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
478$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
479
480.PHONY: $(generic_defconfigs)
481$(generic_defconfigs):
482 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
483 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
484 $(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
485 $(Q)$(MAKE) olddefconfig
486
487#
488# Prevent generic merge_config rules attempting to merge single fragments
489#
490$(generic_config_dir)/%.config: ;
491
492#
493# Legacy defconfig compatibility - these targets used to be real defconfigs but
494# now that the boards have been converted to use the generic kernel they are
495# wrappers around the generic rules above.
496#
497.PHONY: sead3_defconfig
498sead3_defconfig:
499 $(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3
500
501.PHONY: sead3micro_defconfig
502sead3micro_defconfig:
503 $(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3