Merge tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux
[sfrench/cifs-2.6.git] / arch / mips / Makefile
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
15 KBUILD_DEFCONFIG := ip22_defconfig
16
17 #
18 # Select the object file format to substitute into the linker script.
19 #
20 ifdef CONFIG_CPU_LITTLE_ENDIAN
21 32bit-tool-archpref     = mipsel
22 64bit-tool-archpref     = mips64el
23 32bit-bfd               = elf32-tradlittlemips
24 64bit-bfd               = elf64-tradlittlemips
25 32bit-emul              = elf32ltsmip
26 64bit-emul              = elf64ltsmip
27 else
28 32bit-tool-archpref     = mips
29 64bit-tool-archpref     = mips64
30 32bit-bfd               = elf32-tradbigmips
31 64bit-bfd               = elf64-tradbigmips
32 32bit-emul              = elf32btsmip
33 64bit-emul              = elf64btsmip
34 endif
35
36 ifdef CONFIG_32BIT
37 tool-archpref           = $(32bit-tool-archpref)
38 UTS_MACHINE             := mips
39 endif
40 ifdef CONFIG_64BIT
41 tool-archpref           = $(64bit-tool-archpref)
42 UTS_MACHINE             := mips64
43 endif
44
45 ifneq ($(SUBARCH),$(ARCH))
46   ifeq ($(CROSS_COMPILE),)
47     CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
48   endif
49 endif
50
51 ifdef CONFIG_FUNCTION_GRAPH_TRACER
52   ifndef KBUILD_MCOUNT_RA_ADDRESS
53     ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
54       cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
55     endif
56   endif
57 endif
58 cflags-y += $(call cc-option, -mno-check-zero-division)
59
60 ifdef CONFIG_32BIT
61 ld-emul                 = $(32bit-emul)
62 vmlinux-32              = vmlinux
63 vmlinux-64              = vmlinux.64
64
65 cflags-y                += -mabi=32
66 endif
67
68 ifdef CONFIG_64BIT
69 ld-emul                 = $(64bit-emul)
70 vmlinux-32              = vmlinux.32
71 vmlinux-64              = vmlinux
72
73 cflags-y                += -mabi=64
74 endif
75
76 all-$(CONFIG_BOOT_ELF32)        := $(vmlinux-32)
77 all-$(CONFIG_BOOT_ELF64)        := $(vmlinux-64)
78 all-$(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 $28 conflicts with
84 # the current pointer optimization.
85 #
86 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
87 # machines may also.  Since BFD is incredibly buggy with respect to
88 # crossformat linking we rely on the elf2ecoff tool for format conversion.
89 #
90 cflags-y                        += -G 0 -mno-abicalls -fno-pic -pipe
91 cflags-y                        += -msoft-float
92 LDFLAGS_vmlinux                 += -G 0 -static -n -nostdlib
93 KBUILD_AFLAGS_MODULE            += -mlong-calls
94 KBUILD_CFLAGS_MODULE            += -mlong-calls
95
96 cflags-y += -ffreestanding
97
98 #
99 # We explicitly add the endianness specifier if needed, this allows
100 # to compile kernels with a toolchain for the other endianness. We
101 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
102 # when fed the toolchain default!
103 #
104 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
105 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
106 # are used, so we kludge that here.  A bug has been filed at
107 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
108 #
109 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
110 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
111 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
112 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
113 cflags-$(CONFIG_CPU_BIG_ENDIAN)         += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
114 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
115
116 cflags-$(CONFIG_CPU_HAS_SMARTMIPS)      += $(call cc-option,-msmartmips)
117
118 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
119                                    -fno-omit-frame-pointer
120
121 #
122 # CPU-dependent compiler/assembler options for optimization.
123 #
124 cflags-$(CONFIG_CPU_R3000)      += -march=r3000
125 cflags-$(CONFIG_CPU_TX39XX)     += -march=r3900
126 cflags-$(CONFIG_CPU_R6000)      += -march=r6000 -Wa,--trap
127 cflags-$(CONFIG_CPU_R4300)      += -march=r4300 -Wa,--trap
128 cflags-$(CONFIG_CPU_VR41XX)     += -march=r4100 -Wa,--trap
129 cflags-$(CONFIG_CPU_R4X00)      += -march=r4600 -Wa,--trap
130 cflags-$(CONFIG_CPU_TX49XX)     += -march=r4600 -Wa,--trap
131 cflags-$(CONFIG_CPU_MIPS32_R1)  += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
132                         -Wa,-mips32 -Wa,--trap
133 cflags-$(CONFIG_CPU_MIPS32_R2)  += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
134                         -Wa,-mips32r2 -Wa,--trap
135 cflags-$(CONFIG_CPU_MIPS64_R1)  += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
136                         -Wa,-mips64 -Wa,--trap
137 cflags-$(CONFIG_CPU_MIPS64_R2)  += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
138                         -Wa,-mips64r2 -Wa,--trap
139 cflags-$(CONFIG_CPU_R5000)      += -march=r5000 -Wa,--trap
140 cflags-$(CONFIG_CPU_R5432)      += $(call cc-option,-march=r5400,-march=r5000) \
141                         -Wa,--trap
142 cflags-$(CONFIG_CPU_R5500)      += $(call cc-option,-march=r5500,-march=r5000) \
143                         -Wa,--trap
144 cflags-$(CONFIG_CPU_NEVADA)     += $(call cc-option,-march=rm5200,-march=r5000) \
145                         -Wa,--trap
146 cflags-$(CONFIG_CPU_RM7000)     += $(call cc-option,-march=rm7000,-march=r5000) \
147                         -Wa,--trap
148 cflags-$(CONFIG_CPU_RM9000)     += $(call cc-option,-march=rm9000,-march=r5000) \
149                         -Wa,--trap
150 cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-march=sb1,-march=r5000) \
151                         -Wa,--trap
152 cflags-$(CONFIG_CPU_R8000)      += -march=r8000 -Wa,--trap
153 cflags-$(CONFIG_CPU_R10000)     += $(call cc-option,-march=r10000,-march=r8000) \
154                         -Wa,--trap
155 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
156 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
157 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
158 endif
159 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
160 cflags-$(CONFIG_CPU_BMIPS)      += -march=mips32 -Wa,-mips32 -Wa,--trap
161
162 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)  += $(call cc-option,-mfix-r4000,)
163 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)  += $(call cc-option,-mfix-r4400,)
164 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)  += $(call cc-option,-mno-daddi,)
165
166 ifdef CONFIG_CPU_SB1
167 ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
168 KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
169 KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
170 endif
171 endif
172
173 #
174 # Firmware support
175 #
176 libs-$(CONFIG_ARC)              += arch/mips/fw/arc/
177 libs-$(CONFIG_CFE)              += arch/mips/fw/cfe/
178 libs-$(CONFIG_SNIPROM)          += arch/mips/fw/sni/
179 libs-y                          += arch/mips/fw/lib/
180
181 #
182 # Kernel compression
183 #
184 ifdef SYS_SUPPORTS_ZBOOT
185 COMPRESSION_FNAME               = vmlinuz
186 else
187 COMPRESSION_FNAME               = vmlinux
188 endif
189
190 #
191 # Board-dependent options and extra files
192 #
193 include $(srctree)/arch/mips/Kbuild.platforms
194
195 cflags-y                        += -I$(srctree)/arch/mips/include/asm/mach-generic
196 drivers-$(CONFIG_PCI)           += arch/mips/pci/
197
198 #
199 # Automatically detect the build format. By default we choose
200 # the elf format according to the load address.
201 # We can always force a build with a 64-bits symbol format by
202 # passing 'KBUILD_SYM32=no' option to the make's command line.
203 #
204 ifdef CONFIG_64BIT
205   ifndef KBUILD_SYM32
206     ifeq ($(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
218 endif
219
220 KBUILD_AFLAGS   += $(cflags-y)
221 KBUILD_CFLAGS   += $(cflags-y)
222 KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)"
223 KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)"
224
225 LDFLAGS                 += -m $(ld-emul)
226
227 ifdef CONFIG_MIPS
228 CHECKFLAGS += $(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/$$/'/")
231 ifdef CONFIG_64BIT
232 CHECKFLAGS              += -m64
233 endif
234 endif
235
236 OBJCOPYFLAGS            += --remove-section=.reginfo
237
238 head-y := arch/mips/kernel/head.o
239
240 libs-y                  += arch/mips/lib/
241
242 # See arch/mips/Kbuild for content of core part of the kernel
243 core-y += arch/mips/
244
245 drivers-$(CONFIG_OPROFILE)      += arch/mips/oprofile/
246
247 # suspend and hibernation support
248 drivers-$(CONFIG_PM)    += arch/mips/power/
249
250 ifdef CONFIG_LASAT
251 rom.bin rom.sw: vmlinux
252         $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
253 endif
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 #
260 vmlinux.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 #
270 vmlinux.64: vmlinux
271         $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
272
273 all:    $(all-y)
274
275 # boot
276 vmlinux.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
280 vmlinuz 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
285 CLEAN_FILES += vmlinux.32 vmlinux.64
286
287 archprepare:
288 ifdef CONFIG_MIPS32_N32
289         @echo '  Checking missing-syscalls for N32'
290         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
291 endif
292 ifdef CONFIG_MIPS32_O32
293         @echo '  Checking missing-syscalls for O32'
294         $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
295 endif
296
297 install:
298         $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
299 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
300         $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
301 endif
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
305 archclean:
306         $(Q)$(MAKE) $(clean)=arch/mips/boot
307         $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
308         $(Q)$(MAKE) $(clean)=arch/mips/lasat
309
310 define 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.'
321 endef