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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) += $(call cc-option,-msmartmips)
117
118cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
119 -fno-omit-frame-pointer
120
121#
122# CPU-dependent compiler/assembler options for optimization.
123#
124cflags-$(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
131cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
132 -Wa,-mips32 -Wa,--trap
133cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
134 -Wa,-mips32r2 -Wa,--trap
135cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
136 -Wa,-mips64 -Wa,--trap
137cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
138 -Wa,-mips64r2 -Wa,--trap
139cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
140cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
141 -Wa,--trap
142cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
143 -Wa,--trap
144cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
145 -Wa,--trap
146cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
147 -Wa,--trap
148cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \
149 -Wa,--trap
150cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
151 -Wa,--trap
152cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
153cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
154 -Wa,--trap
155cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
156ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
157cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
158endif
159cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
160cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
161
162cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
163cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
164cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
165
166ifdef CONFIG_CPU_SB1
167ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
168KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
169KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
170endif
171endif
172
173#
174# Firmware support
175#
176libs-$(CONFIG_ARC) += arch/mips/fw/arc
177libs-$(CONFIG_CFE) += arch/mips/fw/cfe/
178libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/
179libs-y += arch/mips/fw/lib/
180
181#
182# Kernel compression
183#
184ifdef SYS_SUPPORTS_ZBOOT
185COMPRESSION_FNAME = vmlinuz
186else
187COMPRESSION_FNAME = vmlinux
188endif
189
190#
191# Board-dependent options and extra files
192#
193include $(srctree)/arch/mips/Kbuild.platforms
194
195cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
196drivers-$(CONFIG_PCI) += arch/mips/pci/
197
198#
199# Automatically detect the build format. By default we choose
200# the elf format according to the load address.
201# We can always force a build with a 64-bits symbol format by
202# passing 'KBUILD_SYM32=no' option to the make's command line.
203#
204ifdef CONFIG_64BIT
205 ifndef KBUILD_SYM32
206 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
207 KBUILD_SYM32 = y
208 endif
209 endif
210
211 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
212 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
213 else
214 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
215 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
216 endif
217 endif
218endif
219
220KBUILD_AFLAGS += $(cflags-y)
221KBUILD_CFLAGS += $(cflags-y)
222KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
223KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
224
225LDFLAGS += -m $(ld-emul)
226
227ifdef CONFIG_MIPS
228CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
229 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
230 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
231ifdef CONFIG_64BIT
232CHECKFLAGS += -m64
233endif
234endif
235
236OBJCOPYFLAGS += --remove-section=.reginfo
237
238head-y := arch/mips/kernel/head.o
239
240libs-y += arch/mips/lib/
241
242# See arch/mips/Kbuild for content of core part of the kernel
243core-y += arch/mips/
244
245drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
246
247# suspend and hibernation support
248drivers-$(CONFIG_PM) += arch/mips/power/
249
250ifdef CONFIG_LASAT
251rom.bin rom.sw: vmlinux
252 $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
253endif
254
255#
256# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
257# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
258# convert to ECOFF using elf2ecoff.
259#
260vmlinux.32: vmlinux
261 $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
262
263
264#obj-$(CONFIG_KPROBES) += kprobes.o
265
266#
267# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
268# ELF files from 32-bit files by conversion.
269#
270vmlinux.64: vmlinux
271 $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
272
273all: $(all-y)
274
275# boot
276vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE
277 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
278
279# boot/compressed
280vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE
281 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
282 VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
283
284
285CLEAN_FILES += vmlinux.32 vmlinux.64
286
287archprepare:
288ifdef CONFIG_MIPS32_N32
289 @echo ' Checking missing-syscalls for N32'
290 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
291endif
292ifdef CONFIG_MIPS32_O32
293 @echo ' Checking missing-syscalls for O32'
294 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
295endif
296
297install:
298 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
299ifdef CONFIG_SYS_SUPPORTS_ZBOOT
300 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
301endif
302 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
303 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
304
305archclean:
306 $(Q)$(MAKE) $(clean)=arch/mips/boot
307 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
308 $(Q)$(MAKE) $(clean)=arch/mips/lasat
309
310define archhelp
311 echo ' install - install kernel into $(INSTALL_PATH)'
312 echo ' vmlinux.ecoff - ECOFF boot image'
313 echo ' vmlinux.bin - Raw binary boot image'
314 echo ' vmlinux.srec - SREC boot image'
315 echo ' vmlinuz - Compressed boot(zboot) image'
316 echo ' vmlinuz.ecoff - ECOFF zboot image'
317 echo ' vmlinuz.bin - Raw binary zboot image'
318 echo ' vmlinuz.srec - SREC zboot image'
319 echo
320 echo ' These will be default as appropriate for a configured platform.'
321endef
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 := 32r2el_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) += $(call cc-option,-mno-sched-prolog) \
133 -fno-omit-frame-pointer
134
135# Some distribution-specific toolchains might pass the -fstack-check
136# option during the build, which adds a simple stack-probe at the beginning
137# of every function. This stack probe is to ensure that there is enough
138# stack space, else a SEGV is generated. This is not desirable for MIPS
139# as kernel stacks are small, placed in unmapped virtual memory, and do not
140# grow when overflowed. Especially on SGI IP27 platforms, this check will
141# lead to a NULL pointer dereference in _raw_spin_lock_irq.
142#
143# In disassembly, this stack probe appears at the top of a function as:
144# sd zero,<offset>(sp)
145# Where <offset> is a negative value.
146#
147cflags-y += -fno-stack-check
148
149#
150# CPU-dependent compiler/assembler options for optimization.
151#
152cflags-$(CONFIG_CPU_R3000) += -march=r3000
153cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
154cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
155cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
156cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
157cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
158cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
159 -Wa,-mips32 -Wa,--trap
160cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
161 -Wa,-mips32r2 -Wa,--trap
162cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
163cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
164 -Wa,-mips64 -Wa,--trap
165cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
166 -Wa,-mips64r2 -Wa,--trap
167cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
168cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
169cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
170 -Wa,--trap
171cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
172 -Wa,--trap
173cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
174 -Wa,--trap
175cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
176 -Wa,--trap
177cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
178 -Wa,--trap
179cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
180cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
181cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
182cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
183 -Wa,--trap
184cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
185ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
186cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
187endif
188cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
189cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
190
191cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
192cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
193cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
194
195# For smartmips configurations, there are hundreds of warnings due to ISA overrides
196# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
197# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
198# similar directives in the kernel will spam the build logs with the following warnings:
199# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
200# or
201# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
202# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
203# been fixed properly.
204mips-cflags := $(cflags-y)
205ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
206smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
207cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
208endif
209ifeq ($(CONFIG_CPU_MICROMIPS),y)
210micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
211cflags-$(micromips-ase) += -mmicromips
212endif
213ifeq ($(CONFIG_CPU_HAS_MSA),y)
214toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
215cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
216endif
217toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
218cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
219# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
220# only warns
221xpa-cflags-y := $(mips-cflags)
222xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
223toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
224cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
225toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
226cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
227
228#
229# Firmware support
230#
231libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc
232libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
233libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
234libs-y += arch/mips/fw/lib/
235
236#
237# Kernel compression
238#
239ifdef CONFIG_SYS_SUPPORTS_ZBOOT
240COMPRESSION_FNAME = vmlinuz
241else
242COMPRESSION_FNAME = vmlinux
243endif
244
245#
246# Board-dependent options and extra files
247#
248include arch/mips/Kbuild.platforms
249
250ifdef CONFIG_PHYSICAL_START
251load-y = $(CONFIG_PHYSICAL_START)
252endif
253
254# Sign-extend the entry point to 64 bits if retrieved as a 32-bit number.
255entry-y = $(shell $(OBJDUMP) -f vmlinux 2>/dev/null \
256 | sed -n '/^start address / { \
257 s/^.* //; \
258 s/0x\([0-7].......\)$$/0x00000000\1/; \
259 s/0x\(........\)$$/0xffffffff\1/; p }')
260
261cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
262drivers-$(CONFIG_PCI) += arch/mips/pci/
263
264#
265# Automatically detect the build format. By default we choose
266# the elf format according to the load address.
267# We can always force a build with a 64-bits symbol format by
268# passing 'KBUILD_SYM32=no' option to the make's command line.
269#
270ifdef CONFIG_64BIT
271 ifndef KBUILD_SYM32
272 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
273 KBUILD_SYM32 = y
274 endif
275 endif
276
277 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
278 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
279 else
280 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
281 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
282 endif
283 endif
284endif
285
286KBUILD_AFLAGS += $(cflags-y)
287KBUILD_CFLAGS += $(cflags-y)
288KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
289KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
290
291bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
292 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
293 PLATFORM="$(platform-y)" \
294 ITS_INPUTS="$(its-y)"
295ifdef CONFIG_32BIT
296bootvars-y += ADDR_BITS=32
297endif
298ifdef CONFIG_64BIT
299bootvars-y += ADDR_BITS=64
300endif
301
302# This is required to get dwarf unwinding tables into .debug_frame
303# instead of .eh_frame so we don't discard them.
304KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
305
306LDFLAGS += -m $(ld-emul)
307
308ifdef CONFIG_MIPS
309CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
310 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
311 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
312ifdef CONFIG_64BIT
313CHECKFLAGS += -m64
314endif
315endif
316
317OBJCOPYFLAGS += --remove-section=.reginfo
318
319head-y := arch/mips/kernel/head.o
320
321libs-y += arch/mips/lib/
322libs-y += arch/mips/math-emu/
323
324# See arch/mips/Kbuild for content of core part of the kernel
325core-y += arch/mips/
326
327drivers-$(CONFIG_MIPS_CRC_SUPPORT) += arch/mips/crypto/
328drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
329
330# suspend and hibernation support
331drivers-$(CONFIG_PM) += arch/mips/power/
332
333# boot image targets (arch/mips/boot/)
334boot-y := vmlinux.bin
335boot-y += vmlinux.ecoff
336boot-y += vmlinux.srec
337ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
338boot-y += uImage
339boot-y += uImage.bin
340boot-y += uImage.bz2
341boot-y += uImage.gz
342boot-y += uImage.lzma
343boot-y += uImage.lzo
344endif
345boot-y += vmlinux.itb
346boot-y += vmlinux.gz.itb
347boot-y += vmlinux.bz2.itb
348boot-y += vmlinux.lzma.itb
349boot-y += vmlinux.lzo.itb
350
351# compressed boot image targets (arch/mips/boot/compressed/)
352bootz-y := vmlinuz
353bootz-y += vmlinuz.bin
354bootz-y += vmlinuz.ecoff
355bootz-y += vmlinuz.srec
356ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
357bootz-y += uzImage.bin
358endif
359
360ifdef CONFIG_LASAT
361rom.bin rom.sw: vmlinux
362 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
363 $(bootvars-y) $@
364endif
365
366#
367# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
368# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
369# convert to ECOFF using elf2ecoff.
370#
371quiet_cmd_32 = OBJCOPY $@
372 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
373vmlinux.32: vmlinux
374 $(call cmd,32)
375
376#
377# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
378# ELF files from 32-bit files by conversion.
379#
380quiet_cmd_64 = OBJCOPY $@
381 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
382vmlinux.64: vmlinux
383 $(call cmd,64)
384
385all: $(all-y)
386
387# boot
388$(boot-y): $(vmlinux-32) FORCE
389 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
390 $(bootvars-y) arch/mips/boot/$@
391
392ifdef CONFIG_SYS_SUPPORTS_ZBOOT
393# boot/compressed
394$(bootz-y): $(vmlinux-32) FORCE
395 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
396 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
397else
398vmlinuz: FORCE
399 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
400 /bin/false
401endif
402
403
404CLEAN_FILES += vmlinux.32 vmlinux.64
405
406# device-trees
407core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
408
409%.dtb %.dtb.S %.dtb.o: | scripts
410 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
411
412PHONY += dtbs
413dtbs: scripts
414 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
415
416PHONY += dtbs_install
417dtbs_install:
418 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
419
420archprepare:
421ifdef CONFIG_MIPS32_N32
422 @$(kecho) ' Checking missing-syscalls for N32'
423 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
424endif
425ifdef CONFIG_MIPS32_O32
426 @$(kecho) ' Checking missing-syscalls for O32'
427 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
428endif
429
430install:
431 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
432ifdef CONFIG_SYS_SUPPORTS_ZBOOT
433 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
434endif
435 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
436 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
437
438archclean:
439 $(Q)$(MAKE) $(clean)=arch/mips/boot
440 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
441 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
442 $(Q)$(MAKE) $(clean)=arch/mips/lasat
443
444define archhelp
445 echo ' install - install kernel into $(INSTALL_PATH)'
446 echo ' vmlinux.ecoff - ECOFF boot image'
447 echo ' vmlinux.bin - Raw binary boot image'
448 echo ' vmlinux.srec - SREC boot image'
449 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
450 echo ' vmlinuz - Compressed boot(zboot) image'
451 echo ' vmlinuz.ecoff - ECOFF zboot image'
452 echo ' vmlinuz.bin - Raw binary zboot image'
453 echo ' vmlinuz.srec - SREC zboot image'
454 echo ' uImage - U-Boot image'
455 echo ' uImage.bin - U-Boot image (uncompressed)'
456 echo ' uImage.bz2 - U-Boot image (bz2)'
457 echo ' uImage.gz - U-Boot image (gzip)'
458 echo ' uImage.lzma - U-Boot image (lzma)'
459 echo ' uImage.lzo - U-Boot image (lzo)'
460 echo ' uzImage.bin - U-Boot image (self-extracting)'
461 echo ' dtbs - Device-tree blobs for enabled boards'
462 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
463 echo
464 echo ' These will be default as appropriate for a configured platform.'
465 echo
466 echo ' If you are targeting a system supported by generic kernels you may'
467 echo ' configure the kernel for a given architecture target like so:'
468 echo
469 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
470 echo
471 echo ' Where BOARDS is some subset of the following:'
472 for board in $(sort $(BOARDS)); do echo " $${board}"; done
473 echo
474 echo ' Specifically the following generic default configurations are'
475 echo ' supported:'
476 echo
477 $(foreach cfg,$(generic_defconfigs),
478 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
479 echo
480 echo ' The following legacy default configurations have been converted to'
481 echo ' generic and can still be used:'
482 echo
483 $(foreach cfg,$(sort $(legacy_defconfigs)),
484 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
485 echo
486 echo ' Otherwise, the following default configurations are available:'
487endef
488
489generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
490generic_defconfigs :=
491
492#
493# If the user generates a generic kernel configuration without specifying a
494# list of boards to include the config fragments for, default to including all
495# available board config fragments.
496#
497ifeq ($(BOARDS),)
498BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
499endif
500
501#
502# Generic kernel configurations which merge generic_defconfig with the
503# appropriate config fragments from arch/mips/configs/generic/, resulting in
504# the ability to easily configure the kernel for a given architecture,
505# endianness & set of boards without duplicating the needed configuration in
506# hundreds of defconfig files.
507#
508define gen_generic_defconfigs
509$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
510target := $(bits)$(rev)$(filter el,$(endian))_defconfig
511generic_defconfigs += $$(target)
512$$(target): $(generic_config_dir)/$(bits)$(rev).config
513$$(target): $(generic_config_dir)/$(endian).config
514)))
515endef
516
517$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
518$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
519
520define describe_generic_defconfig
521$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
522endef
523
524.PHONY: $(generic_defconfigs)
525$(generic_defconfigs):
526 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
527 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
528 grep -Ev '^#'
529 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
530 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
531 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
532 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
533 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
534 "$(origin BOARDS)" $(BOARDS)
535 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
536
537#
538# Prevent generic merge_config rules attempting to merge single fragments
539#
540$(generic_config_dir)/%.config: ;
541
542#
543# Prevent direct use of generic_defconfig, which is intended to be used as the
544# basis of the various ISA-specific targets generated above.
545#
546.PHONY: generic_defconfig
547generic_defconfig:
548 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
549 $(Q)echo "used via an ISA-specific target from the following list:"
550 $(Q)echo
551 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
552 $(Q)echo
553 $(Q)false
554
555#
556# Legacy defconfig compatibility - these targets used to be real defconfigs but
557# now that the boards have been converted to use the generic kernel they are
558# wrappers around the generic rules above.
559#
560legacy_defconfigs += ocelot_defconfig
561ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
562
563legacy_defconfigs += sead3_defconfig
564sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
565
566legacy_defconfigs += sead3micro_defconfig
567sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
568
569legacy_defconfigs += xilfpga_defconfig
570xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
571
572.PHONY: $(legacy_defconfigs)
573$(legacy_defconfigs):
574 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)