Root/arch/mips/Makefile

Source at commit 694c7fbe86b8a9c91392e505afcb9fcfc91deccc created 11 years 6 months 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) += $(call cc-option,-msmartmips)
117cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips -mno-jals)
118
119cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
120                   -fno-omit-frame-pointer
121
122#
123# CPU-dependent compiler/assembler options for optimization.
124#
125cflags-$(CONFIG_CPU_R3000) += -march=r3000
126cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
127cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
128cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
129cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
130cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
131cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
132cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
133            -Wa,-mips32 -Wa,--trap
134cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
135            -Wa,-mips32r2 -Wa,--trap
136cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
137            -Wa,-mips64 -Wa,--trap
138cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
139            -Wa,-mips64r2 -Wa,--trap
140cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
141cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
142            -Wa,--trap
143cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
144            -Wa,--trap
145cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
146            -Wa,--trap
147cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
148            -Wa,--trap
149cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
150            -Wa,--trap
151cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
152cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
153            -Wa,--trap
154cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
155ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
156cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
157endif
158cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
159cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
160
161cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
162cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
163cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
164
165ifdef CONFIG_CPU_SB1
166ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
167KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
168KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
169endif
170endif
171
172#
173# Firmware support
174#
175libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
176libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
177libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
178libs-y += arch/mips/fw/lib/
179
180#
181# Kernel compression
182#
183ifdef SYS_SUPPORTS_ZBOOT
184COMPRESSION_FNAME = vmlinuz
185else
186COMPRESSION_FNAME = vmlinux
187endif
188
189#
190# Board-dependent options and extra files
191#
192include $(srctree)/arch/mips/Kbuild.platforms
193
194ifdef CONFIG_PHYSICAL_START
195load-y = $(CONFIG_PHYSICAL_START)
196endif
197entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
198                    | grep "\bkernel_entry\b" | cut -f1 -d \ )
199
200cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
201drivers-$(CONFIG_PCI) += arch/mips/pci/
202
203#
204# Automatically detect the build format. By default we choose
205# the elf format according to the load address.
206# We can always force a build with a 64-bits symbol format by
207# passing 'KBUILD_SYM32=no' option to the make's command line.
208#
209ifdef CONFIG_64BIT
210  ifndef KBUILD_SYM32
211    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
212      KBUILD_SYM32 = y
213    endif
214  endif
215
216  ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
217    cflags-y += -msym32 -DKBUILD_64BIT_SYM32
218  else
219    ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
220      $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
221    endif
222  endif
223endif
224
225KBUILD_AFLAGS += $(cflags-y)
226KBUILD_CFLAGS += $(cflags-y)
227KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
228KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
229
230bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
231          VMLINUX_ENTRY_ADDRESS=$(entry-y)
232
233LDFLAGS += -m $(ld-emul)
234
235ifdef CONFIG_CC_STACKPROTECTOR
236  KBUILD_CFLAGS += -fstack-protector
237endif
238
239ifdef CONFIG_MIPS
240CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
241    egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
242    sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
243ifdef CONFIG_64BIT
244CHECKFLAGS += -m64
245endif
246endif
247
248OBJCOPYFLAGS += --remove-section=.reginfo
249
250head-y := arch/mips/kernel/head.o
251
252libs-y += arch/mips/lib/
253
254# See arch/mips/Kbuild for content of core part of the kernel
255core-y += arch/mips/
256
257drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
258
259# suspend and hibernation support
260drivers-$(CONFIG_PM) += arch/mips/power/
261
262# boot image targets (arch/mips/boot/)
263boot-y := vmlinux.bin
264boot-y += vmlinux.ecoff
265boot-y += vmlinux.srec
266ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
267boot-y += uImage
268boot-y += uImage.gz
269endif
270
271# compressed boot image targets (arch/mips/boot/compressed/)
272bootz-y := vmlinuz
273bootz-y += vmlinuz.bin
274bootz-y += vmlinuz.ecoff
275bootz-y += vmlinuz.srec
276
277ifdef CONFIG_LASAT
278rom.bin rom.sw: vmlinux
279    $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
280        $(bootvars-y) $@
281endif
282
283#
284# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
285# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
286# convert to ECOFF using elf2ecoff.
287#
288quiet_cmd_32 = OBJCOPY $@
289    cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
290vmlinux.32: vmlinux
291    $(call cmd,32)
292
293#
294# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
295# ELF files from 32-bit files by conversion.
296#
297quiet_cmd_64 = OBJCOPY $@
298    cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
299vmlinux.64: vmlinux
300    $(call cmd,64)
301
302all: $(all-y)
303
304# boot
305$(boot-y): $(vmlinux-32) FORCE
306    $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
307        $(bootvars-y) arch/mips/boot/$@
308
309ifdef CONFIG_SYS_SUPPORTS_ZBOOT
310# boot/compressed
311$(bootz-y): $(vmlinux-32) FORCE
312    $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
313        $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
314else
315vmlinuz: FORCE
316    @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
317    /bin/false
318endif
319
320
321CLEAN_FILES += vmlinux.32 vmlinux.64
322
323archprepare:
324ifdef CONFIG_MIPS32_N32
325    @echo ' Checking missing-syscalls for N32'
326    $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
327endif
328ifdef CONFIG_MIPS32_O32
329    @echo ' Checking missing-syscalls for O32'
330    $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
331endif
332
333install:
334    $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
335ifdef CONFIG_SYS_SUPPORTS_ZBOOT
336    $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
337endif
338    $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
339    $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
340
341archclean:
342    $(Q)$(MAKE) $(clean)=arch/mips/boot
343    $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
344    $(Q)$(MAKE) $(clean)=arch/mips/lasat
345
346define archhelp
347    echo ' install - install kernel into $(INSTALL_PATH)'
348    echo ' vmlinux.ecoff - ECOFF boot image'
349    echo ' vmlinux.bin - Raw binary boot image'
350    echo ' vmlinux.srec - SREC boot image'
351    echo ' vmlinuz - Compressed boot(zboot) image'
352    echo ' vmlinuz.ecoff - ECOFF zboot image'
353    echo ' vmlinuz.bin - Raw binary zboot image'
354    echo ' vmlinuz.srec - SREC zboot image'
355    echo ' uImage - U-Boot image'
356    echo ' uImage.gz - U-Boot image (gzip)'
357    echo
358    echo ' These will be default as appropriate for a configured platform.'
359endef
360

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