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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 | |
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 $28 conflicts with |
84 | # the current pointer optimization. |
85 | # |
86 | # The DECStation requires an ECOFF kernel for remote booting, other MIPS |
87 | # machines may also. Since BFD is incredibly buggy with respect to |
88 | # crossformat linking we rely on the elf2ecoff tool for format conversion. |
89 | # |
90 | cflags-y += -G 0 -mno-abicalls -fno-pic -pipe |
91 | cflags-y += -msoft-float |
92 | LDFLAGS_vmlinux += -G 0 -static -n -nostdlib |
93 | KBUILD_AFLAGS_MODULE += -mlong-calls |
94 | KBUILD_CFLAGS_MODULE += -mlong-calls |
95 | |
96 | cflags-y += -ffreestanding |
97 | |
98 | # |
99 | # We explicitly add the endianness specifier if needed, this allows |
100 | # to compile kernels with a toolchain for the other endianness. We |
101 | # carefully avoid to add it redundantly because gcc 3.3/3.4 complains |
102 | # when fed the toolchain default! |
103 | # |
104 | # Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of |
105 | # 2006-10-10 don't properly change the predefined symbols if -EB / -EL |
106 | # are used, so we kludge that here. A bug has been filed at |
107 | # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. |
108 | # |
109 | undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ |
110 | undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ |
111 | predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ |
112 | predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ |
113 | cflags-$(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 | |
161 | cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) |
162 | cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) |
163 | cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) |
164 | |
165 | ifdef CONFIG_CPU_SB1 |
166 | ifdef CONFIG_SB1_PASS_1_WORKAROUNDS |
167 | KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds |
168 | KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds |
169 | endif |
170 | endif |
171 | |
172 | # |
173 | # Firmware support |
174 | # |
175 | libs-$(CONFIG_ARC) += arch/mips/fw/arc/ |
176 | libs-$(CONFIG_CFE) += arch/mips/fw/cfe/ |
177 | libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/ |
178 | libs-y += arch/mips/fw/lib/ |
179 | |
180 | # |
181 | # Kernel compression |
182 | # |
183 | ifdef SYS_SUPPORTS_ZBOOT |
184 | COMPRESSION_FNAME = vmlinuz |
185 | else |
186 | COMPRESSION_FNAME = vmlinux |
187 | endif |
188 | |
189 | # |
190 | # Board-dependent options and extra files |
191 | # |
192 | include $(srctree)/arch/mips/Kbuild.platforms |
193 | |
194 | cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic |
195 | drivers-$(CONFIG_PCI) += arch/mips/pci/ |
196 | |
197 | # |
198 | # Automatically detect the build format. By default we choose |
199 | # the elf format according to the load address. |
200 | # We can always force a build with a 64-bits symbol format by |
201 | # passing 'KBUILD_SYM32=no' option to the make's command line. |
202 | # |
203 | ifdef CONFIG_64BIT |
204 | ifndef KBUILD_SYM32 |
205 | ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) |
206 | KBUILD_SYM32 = y |
207 | endif |
208 | endif |
209 | |
210 | ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) |
211 | cflags-y += -msym32 -DKBUILD_64BIT_SYM32 |
212 | else |
213 | ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) |
214 | $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) |
215 | endif |
216 | endif |
217 | endif |
218 | |
219 | KBUILD_AFLAGS += $(cflags-y) |
220 | KBUILD_CFLAGS += $(cflags-y) |
221 | KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)" |
222 | KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)" |
223 | |
224 | LDFLAGS += -m $(ld-emul) |
225 | |
226 | ifdef CONFIG_MIPS |
227 | CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \ |
228 | egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ |
229 | sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/") |
230 | ifdef CONFIG_64BIT |
231 | CHECKFLAGS += -m64 |
232 | endif |
233 | endif |
234 | |
235 | OBJCOPYFLAGS += --remove-section=.reginfo |
236 | |
237 | head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o |
238 | |
239 | libs-y += arch/mips/lib/ |
240 | |
241 | # See arch/mips/Kbuild for content of core part of the kernel |
242 | core-y += arch/mips/ |
243 | |
244 | drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ |
245 | |
246 | # suspend and hibernation support |
247 | drivers-$(CONFIG_PM) += arch/mips/power/ |
248 | |
249 | ifdef CONFIG_LASAT |
250 | rom.bin rom.sw: vmlinux |
251 | $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@ |
252 | endif |
253 | |
254 | # |
255 | # Some machines like the Indy need 32-bit ELF binaries for booting purposes. |
256 | # Other need ECOFF, so we build a 32-bit ELF binary for them which we then |
257 | # convert to ECOFF using elf2ecoff. |
258 | # |
259 | vmlinux.32: vmlinux |
260 | $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ |
261 | |
262 | |
263 | #obj-$(CONFIG_KPROBES) += kprobes.o |
264 | |
265 | # |
266 | # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit |
267 | # ELF files from 32-bit files by conversion. |
268 | # |
269 | vmlinux.64: vmlinux |
270 | $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ |
271 | |
272 | all: $(all-y) |
273 | |
274 | # boot |
275 | vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE |
276 | $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@ |
277 | |
278 | # boot/compressed |
279 | vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE |
280 | $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ |
281 | VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@ |
282 | |
283 | |
284 | CLEAN_FILES += vmlinux.32 vmlinux.64 |
285 | |
286 | archprepare: |
287 | ifdef CONFIG_MIPS32_N32 |
288 | @echo ' Checking missing-syscalls for N32' |
289 | $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=n32" |
290 | endif |
291 | ifdef CONFIG_MIPS32_O32 |
292 | @echo ' Checking missing-syscalls for O32' |
293 | $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32" |
294 | endif |
295 | |
296 | install: |
297 | $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) |
298 | $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) |
299 | $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) |
300 | $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) |
301 | |
302 | archclean: |
303 | $(Q)$(MAKE) $(clean)=arch/mips/boot |
304 | $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed |
305 | $(Q)$(MAKE) $(clean)=arch/mips/lasat |
306 | |
307 | define archhelp |
308 | echo ' install - install kernel into $(INSTALL_PATH)' |
309 | echo ' vmlinux.ecoff - ECOFF boot image' |
310 | echo ' vmlinux.bin - Raw binary boot image' |
311 | echo ' vmlinux.srec - SREC boot image' |
312 | echo ' vmlinuz - Compressed boot(zboot) image' |
313 | echo ' vmlinuz.ecoff - ECOFF zboot image' |
314 | echo ' vmlinuz.bin - Raw binary zboot image' |
315 | echo ' vmlinuz.srec - SREC zboot image' |
316 | echo |
317 | echo ' These will be default as apropriate for a configured platform.' |
318 | endef |
319 |
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