Root/arch/mips/Makefile

Source at commit 7fc863389f8fabc8eb33dafa375b8984c0b829fd created 13 years 12 days ago.
By Maarten ter Huurne, MIPS: JZ4740: Add cpufreq support
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
322

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