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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/tools elf-entry
17ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
18 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
19endif
20 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
21
22KBUILD_DEFCONFIG := 32r2el_defconfig
23KBUILD_DTBS := dtbs
24
25#
26# Select the object file format to substitute into the linker script.
27#
28ifdef CONFIG_CPU_LITTLE_ENDIAN
2932bit-tool-archpref = mipsel
3064bit-tool-archpref = mips64el
3132bit-bfd = elf32-tradlittlemips
3264bit-bfd = elf64-tradlittlemips
3332bit-emul = elf32ltsmip
3464bit-emul = elf64ltsmip
35else
3632bit-tool-archpref = mips
3764bit-tool-archpref = mips64
3832bit-bfd = elf32-tradbigmips
3964bit-bfd = elf64-tradbigmips
4032bit-emul = elf32btsmip
4164bit-emul = elf64btsmip
42endif
43
44ifdef CONFIG_32BIT
45tool-archpref = $(32bit-tool-archpref)
46UTS_MACHINE := mips
47endif
48ifdef CONFIG_64BIT
49tool-archpref = $(64bit-tool-archpref)
50UTS_MACHINE := mips64
51endif
52
53ifneq ($(SUBARCH),$(ARCH))
54 ifeq ($(CROSS_COMPILE),)
55 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
56 endif
57endif
58
59ifdef CONFIG_FUNCTION_GRAPH_TRACER
60 ifndef KBUILD_MCOUNT_RA_ADDRESS
61 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
62 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
63 endif
64 endif
65endif
66cflags-y += $(call cc-option, -mno-check-zero-division)
67
68ifdef CONFIG_32BIT
69ld-emul = $(32bit-emul)
70vmlinux-32 = vmlinux
71vmlinux-64 = vmlinux.64
72
73cflags-y += -mabi=32
74endif
75
76ifdef CONFIG_64BIT
77ld-emul = $(64bit-emul)
78vmlinux-32 = vmlinux.32
79vmlinux-64 = vmlinux
80
81cflags-y += -mabi=64
82endif
83
84all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
85all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
86all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
87
88#
89# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
90# code since it only slows down the whole thing. At some point we might make
91# use of global pointer optimizations but their use of $28 conflicts with
92# the current pointer optimization.
93#
94# The DECStation requires an ECOFF kernel for remote booting, other MIPS
95# machines may also. Since BFD is incredibly buggy with respect to
96# crossformat linking we rely on the elf2ecoff tool for format conversion.
97#
98cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
99cflags-y += -msoft-float
100LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
101KBUILD_AFLAGS_MODULE += -mlong-calls
102KBUILD_CFLAGS_MODULE += -mlong-calls
103
104ifeq ($(CONFIG_RELOCATABLE),y)
105LDFLAGS_vmlinux += --emit-relocs
106endif
107
108#
109# pass -msoft-float to GAS if it supports it. However on newer binutils
110# (specifically newer than 2.24.51.20140728) we then also need to explicitly
111# set ".set hardfloat" in all files which manipulate floating point registers.
112#
113ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
114 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
115endif
116
117cflags-y += -ffreestanding
118
119cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
120cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
121
122cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
123 -fno-omit-frame-pointer
124
125# Some distribution-specific toolchains might pass the -fstack-check
126# option during the build, which adds a simple stack-probe at the beginning
127# of every function. This stack probe is to ensure that there is enough
128# stack space, else a SEGV is generated. This is not desirable for MIPS
129# as kernel stacks are small, placed in unmapped virtual memory, and do not
130# grow when overflowed. Especially on SGI IP27 platforms, this check will
131# lead to a NULL pointer dereference in _raw_spin_lock_irq.
132#
133# In disassembly, this stack probe appears at the top of a function as:
134# sd zero,<offset>(sp)
135# Where <offset> is a negative value.
136#
137cflags-y += -fno-stack-check
138
139#
140# CPU-dependent compiler/assembler options for optimization.
141#
142cflags-$(CONFIG_CPU_R3000) += -march=r3000
143cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
144cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
145cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
146cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
147cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
148cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
149cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
150cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
151cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
152cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
153cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
154cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
155cflags-$(CONFIG_CPU_P5600) += -march=p5600 -Wa,--trap -modd-spreg
156cflags-$(CONFIG_CPU_R5000) += -march=r5000 -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_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
168 -Wa,--trap
169cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
170ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
171cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
172endif
173cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
174cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
175
176cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
177cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
178cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
179
180# For smartmips configurations, there are hundreds of warnings due to ISA overrides
181# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
182# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
183# similar directives in the kernel will spam the build logs with the following warnings:
184# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
185# or
186# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
187# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
188# been fixed properly.
189mips-cflags := $(cflags-y)
190ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
191smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
192cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
193endif
194ifeq ($(CONFIG_CPU_MICROMIPS),y)
195micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
196cflags-$(micromips-ase) += -mmicromips
197endif
198ifeq ($(CONFIG_CPU_HAS_MSA),y)
199toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
200cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
201endif
202toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
203cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
204# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
205# only warns
206xpa-cflags-y := $(mips-cflags)
207xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
208toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
209cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
210toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
211cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
212toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
213cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
214toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
215cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
216
217#
218# Firmware support
219#
220libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc
221libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
222libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
223libs-y += arch/mips/fw/lib/
224
225#
226# Kernel compression
227#
228ifdef CONFIG_SYS_SUPPORTS_ZBOOT
229COMPRESSION_FNAME = vmlinuz
230else
231COMPRESSION_FNAME = vmlinux
232endif
233
234#
235# Board-dependent options and extra files
236#
237include arch/mips/Kbuild.platforms
238
239ifdef CONFIG_PHYSICAL_START
240load-y = $(CONFIG_PHYSICAL_START)
241endif
242
243entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
244cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
245drivers-$(CONFIG_PCI) += arch/mips/pci/
246
247#
248# Automatically detect the build format. By default we choose
249# the elf format according to the load address.
250# We can always force a build with a 64-bits symbol format by
251# passing 'KBUILD_SYM32=no' option to the make's command line.
252#
253ifdef CONFIG_64BIT
254 ifndef KBUILD_SYM32
255 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
256 KBUILD_SYM32 = y
257 endif
258 endif
259
260 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
261 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
262 else
263 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
264 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
265 endif
266 endif
267endif
268
269# When linking a 32-bit executable the LLVM linker cannot cope with a
270# 32-bit load address that has been sign-extended to 64 bits. Simply
271# remove the upper 32 bits then, as it is safe to do so with other
272# linkers.
273ifdef CONFIG_64BIT
274 load-ld = $(load-y)
275else
276 load-ld = $(subst 0xffffffff,0x,$(load-y))
277endif
278
279KBUILD_AFLAGS += $(cflags-y)
280KBUILD_CFLAGS += $(cflags-y)
281KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
282KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
283
284bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
285 LINKER_LOAD_ADDRESS=$(load-ld) \
286 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
287 PLATFORM="$(platform-y)" \
288 ITS_INPUTS="$(its-y)"
289ifdef CONFIG_32BIT
290bootvars-y += ADDR_BITS=32
291endif
292ifdef CONFIG_64BIT
293bootvars-y += ADDR_BITS=64
294endif
295
296# This is required to get dwarf unwinding tables into .debug_frame
297# instead of .eh_frame so we don't discard them.
298KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
299
300KBUILD_LDFLAGS += -m $(ld-emul)
301
302ifdef CONFIG_MIPS
303CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
304 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
305 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
306endif
307
308OBJCOPYFLAGS += --remove-section=.reginfo
309
310head-y := arch/mips/kernel/head.o
311
312libs-y += arch/mips/lib/
313libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
314
315# See arch/mips/Kbuild for content of core part of the kernel
316core-y += arch/mips/
317
318drivers-y += arch/mips/crypto/
319drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
320
321# suspend and hibernation support
322drivers-$(CONFIG_PM) += arch/mips/power/
323
324# boot image targets (arch/mips/boot/)
325boot-y := vmlinux.bin
326boot-y += vmlinux.ecoff
327boot-y += vmlinux.srec
328ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
329boot-y += uImage
330boot-y += uImage.bin
331boot-y += uImage.bz2
332boot-y += uImage.gz
333boot-y += uImage.lzma
334boot-y += uImage.lzo
335endif
336boot-y += vmlinux.itb
337boot-y += vmlinux.gz.itb
338boot-y += vmlinux.bz2.itb
339boot-y += vmlinux.lzma.itb
340boot-y += vmlinux.lzo.itb
341
342# compressed boot image targets (arch/mips/boot/compressed/)
343bootz-y := vmlinuz
344bootz-y += vmlinuz.bin
345bootz-y += vmlinuz.ecoff
346bootz-y += vmlinuz.srec
347ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
348bootz-y += uzImage.bin
349endif
350
351#
352# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
353# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
354# convert to ECOFF using elf2ecoff.
355#
356quiet_cmd_32 = OBJCOPY $@
357 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
358vmlinux.32: vmlinux
359 $(call cmd,32)
360
361#
362# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
363# ELF files from 32-bit files by conversion.
364#
365quiet_cmd_64 = OBJCOPY $@
366 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
367vmlinux.64: vmlinux
368 $(call cmd,64)
369
370all: $(all-y) $(KBUILD_DTBS)
371
372# boot
373$(boot-y): $(vmlinux-32) FORCE
374 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
375 $(bootvars-y) arch/mips/boot/$@
376
377ifdef CONFIG_SYS_SUPPORTS_ZBOOT
378# boot/compressed
379$(bootz-y): $(vmlinux-32) FORCE
380 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
381 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
382else
383vmlinuz: FORCE
384 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
385 /bin/false
386endif
387
388
389CLEAN_FILES += vmlinux.32 vmlinux.64
390
391# device-trees
392core-y += arch/mips/boot/dts/
393
394archprepare:
395ifdef CONFIG_MIPS32_N32
396 @$(kecho) ' Checking missing-syscalls for N32'
397 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
398endif
399ifdef CONFIG_MIPS32_O32
400 @$(kecho) ' Checking missing-syscalls for O32'
401 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
402endif
403
404install:
405 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
406ifdef CONFIG_SYS_SUPPORTS_ZBOOT
407 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
408endif
409 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
410 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
411
412archclean:
413 $(Q)$(MAKE) $(clean)=arch/mips/boot
414 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
415 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
416
417archheaders:
418 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
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 ' uzImage.bin - U-Boot image (self-extracting)'
437 echo
438 echo ' These will be default as appropriate for a configured platform.'
439 echo
440 echo ' If you are targeting a system supported by generic kernels you may'
441 echo ' configure the kernel for a given architecture target like so:'
442 echo
443 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
444 echo
445 echo ' Where BOARDS is some subset of the following:'
446 for board in $(sort $(BOARDS)); do echo " $${board}"; done
447 echo
448 echo ' Specifically the following generic default configurations are'
449 echo ' supported:'
450 echo
451 $(foreach cfg,$(generic_defconfigs),
452 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
453 echo
454 echo ' The following legacy default configurations have been converted to'
455 echo ' generic and can still be used:'
456 echo
457 $(foreach cfg,$(sort $(legacy_defconfigs)),
458 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
459 echo
460 echo ' Otherwise, the following default configurations are available:'
461endef
462
463generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
464generic_defconfigs :=
465
466#
467# If the user generates a generic kernel configuration without specifying a
468# list of boards to include the config fragments for, default to including all
469# available board config fragments.
470#
471ifeq ($(BOARDS),)
472BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
473endif
474
475#
476# Generic kernel configurations which merge generic_defconfig with the
477# appropriate config fragments from arch/mips/configs/generic/, resulting in
478# the ability to easily configure the kernel for a given architecture,
479# endianness & set of boards without duplicating the needed configuration in
480# hundreds of defconfig files.
481#
482define gen_generic_defconfigs
483$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
484target := $(bits)$(rev)$(filter el,$(endian))_defconfig
485generic_defconfigs += $$(target)
486$$(target): $(generic_config_dir)/$(bits)$(rev).config
487$$(target): $(generic_config_dir)/$(endian).config
488)))
489endef
490
491$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
492$(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
493
494define describe_generic_defconfig
495$(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
496endef
497
498.PHONY: $(generic_defconfigs)
499$(generic_defconfigs):
500 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
501 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
502 grep -Ev '^#'
503 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
504 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
505 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
506 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
507 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
508 "$(origin BOARDS)" $(BOARDS)
509 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
510
511#
512# Prevent generic merge_config rules attempting to merge single fragments
513#
514$(generic_config_dir)/%.config: ;
515
516#
517# Prevent direct use of generic_defconfig, which is intended to be used as the
518# basis of the various ISA-specific targets generated above.
519#
520.PHONY: generic_defconfig
521generic_defconfig:
522 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
523 $(Q)echo "used via an ISA-specific target from the following list:"
524 $(Q)echo
525 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
526 $(Q)echo
527 $(Q)false
528
529#
530# Legacy defconfig compatibility - these targets used to be real defconfigs but
531# now that the boards have been converted to use the generic kernel they are
532# wrappers around the generic rules above.
533#
534legacy_defconfigs += ocelot_defconfig
535ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
536
537legacy_defconfigs += sead3_defconfig
538sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
539
540legacy_defconfigs += sead3micro_defconfig
541sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
542
543legacy_defconfigs += xilfpga_defconfig
544xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
545
546.PHONY: $(legacy_defconfigs)
547$(legacy_defconfigs):
548 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)