Root/arch/powerpc/Makefile

Source at commit 694c7fbe86b8a9c91392e505afcb9fcfc91deccc created 13 years 12 days ago.
By Maarten ter Huurne, MIPS: JZ4740: Add cpufreq support
1# This file is included by the global makefile so that you can add your own
2# architecture-specific flags and dependencies. Remember to do have actions
3# for "archclean" and "archdep" for cleaning up and making dependencies for
4# this architecture.
5#
6# This file is subject to the terms and conditions of the GNU General Public
7# License. See the file "COPYING" in the main directory of this archive
8# for more details.
9#
10# Copyright (C) 1994 by Linus Torvalds
11# Changes for PPC by Gary Thomas
12# Rewritten by Cort Dougan and Paul Mackerras
13#
14
15HAS_BIARCH := $(call cc-option-yn, -m32)
16
17# Set default 32 bits cross compilers for vdso and boot wrapper
18CROSS32_COMPILE ?=
19
20CROSS32CC := $(CROSS32_COMPILE)gcc
21CROSS32AR := $(CROSS32_COMPILE)ar
22
23ifeq ($(HAS_BIARCH),y)
24ifeq ($(CROSS32_COMPILE),)
25CROSS32CC := $(CC) -m32
26CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
27endif
28endif
29
30export CROSS32CC CROSS32AR
31
32ifeq ($(CROSS_COMPILE),)
33KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
34else
35KBUILD_DEFCONFIG := ppc64_defconfig
36endif
37
38ifeq ($(CONFIG_PPC64),y)
39new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
40
41ifeq ($(new_nm),y)
42NM := $(NM) --synthetic
43endif
44endif
45
46ifeq ($(CONFIG_PPC64),y)
47ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
48OLDARCH := ppc64le
49else
50OLDARCH := ppc64
51endif
52else
53ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
54OLDARCH := ppcle
55else
56OLDARCH := ppc
57endif
58endif
59
60# It seems there are times we use this Makefile without
61# including the config file, but this replicates the old behaviour
62ifeq ($(CONFIG_WORD_SIZE),)
63CONFIG_WORD_SIZE := 32
64endif
65
66UTS_MACHINE := $(OLDARCH)
67
68ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
69override CC += -mlittle-endian -mno-strict-align
70override AS += -mlittle-endian
71override LD += -EL
72override CROSS32CC += -mlittle-endian
73override CROSS32AS += -mlittle-endian
74LDEMULATION := lppc
75GNUTARGET := powerpcle
76MULTIPLEWORD := -mno-multiple
77else
78ifeq ($(call cc-option-yn,-mbig-endian),y)
79override CC += -mbig-endian
80override AS += -mbig-endian
81endif
82override LD += -EB
83LDEMULATION := ppc
84GNUTARGET := powerpc
85MULTIPLEWORD := -mmultiple
86endif
87
88ifeq ($(HAS_BIARCH),y)
89override AS += -a$(CONFIG_WORD_SIZE)
90override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION)
91override CC += -m$(CONFIG_WORD_SIZE)
92override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR)
93endif
94
95LDFLAGS_vmlinux-y := -Bstatic
96LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
97LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
98
99ifeq ($(CONFIG_PPC64),y)
100ifeq ($(call cc-option-yn,-mcmodel=medium),y)
101    # -mcmodel=medium breaks modules because it uses 32bit offsets from
102    # the TOC pointer to create pointers where possible. Pointers into the
103    # percpu data area are created by this method.
104    #
105    # The kernel module loader relocates the percpu data section from the
106    # original location (starting with 0xd...) to somewhere in the base
107    # kernel percpu data space (starting with 0xc...). We need a full
108    # 64bit relocation for this to work, hence -mcmodel=large.
109    KBUILD_CFLAGS_MODULE += -mcmodel=large
110else
111    export NO_MINIMAL_TOC := -mno-minimal-toc
112endif
113endif
114
115CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc
116CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
117CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc)
118CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
119CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD)
120
121ifeq ($(CONFIG_PPC_BOOK3S_64),y)
122CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
123else
124CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
125endif
126
127CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
128CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
129CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
130CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
131CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
132
133# Altivec option not allowed with e500mc64 in GCC.
134ifeq ($(CONFIG_ALTIVEC),y)
135E5500_CPU := -mcpu=powerpc64
136else
137E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
138endif
139CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
140CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
141
142ifeq ($(CONFIG_PPC32),y)
143ifeq ($(CONFIG_PPC_E500MC),y)
144CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
145else
146CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
147endif
148endif
149
150CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
151
152KBUILD_CPPFLAGS += -Iarch/$(ARCH)
153KBUILD_AFLAGS += -Iarch/$(ARCH)
154KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
155CPP = $(CC) -E $(KBUILD_CFLAGS)
156
157CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
158
159KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
160
161# No AltiVec or VSX instructions when building kernel
162KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
163KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
164
165# No SPE instruction when building kernel
166# (We use all available options to help semi-broken compilers)
167KBUILD_CFLAGS += $(call cc-option,-mno-spe)
168KBUILD_CFLAGS += $(call cc-option,-mspe=no)
169
170# Enable unit-at-a-time mode when possible. It shrinks the
171# kernel considerably.
172KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
173
174# FIXME: the module load should be taught about the additional relocs
175# generated by this.
176# revert to pre-gcc-4.4 behaviour of .eh_frame
177KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
178
179# Never use string load/store instructions as they are
180# often slow when they are implemented at all
181KBUILD_CFLAGS += -mno-string
182
183ifeq ($(CONFIG_6xx),y)
184KBUILD_CFLAGS += -mcpu=powerpc
185endif
186
187# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
188ifeq ($(CONFIG_FUNCTION_TRACER),y)
189KBUILD_CFLAGS += -mno-sched-epilog
190endif
191
192cpu-as-$(CONFIG_4xx) += -Wa,-m405
193cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec
194cpu-as-$(CONFIG_E200) += -Wa,-me200
195
196KBUILD_AFLAGS += $(cpu-as-y)
197KBUILD_CFLAGS += $(cpu-as-y)
198
199head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
200head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
201head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
202head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
203head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
204
205head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
206head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
207head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
208head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
209
210core-y += arch/powerpc/kernel/ \
211                   arch/powerpc/mm/ \
212                   arch/powerpc/lib/ \
213                   arch/powerpc/sysdev/ \
214                   arch/powerpc/platforms/ \
215                   arch/powerpc/math-emu/ \
216                   arch/powerpc/crypto/ \
217                   arch/powerpc/net/
218core-$(CONFIG_XMON) += arch/powerpc/xmon/
219core-$(CONFIG_KVM) += arch/powerpc/kvm/
220core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/
221
222drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
223
224# Default to zImage, override when needed
225all: zImage
226
227# With make 3.82 we cannot mix normal and wildcard targets
228BOOT_TARGETS1 := zImage zImage.initrd uImage
229BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
230
231PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
232
233boot := arch/$(ARCH)/boot
234
235ifeq ($(CONFIG_RELOCATABLE),y)
236quiet_cmd_relocs_check = CALL $<
237      cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux"
238
239PHONY += relocs_check
240relocs_check: arch/powerpc/relocs_check.pl vmlinux
241    $(call cmd,relocs_check)
242
243zImage: relocs_check
244endif
245
246$(BOOT_TARGETS1): vmlinux
247    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
248$(BOOT_TARGETS2): vmlinux
249    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
250
251
252bootwrapper_install:
253    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
254
255%.dtb: scripts
256    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
257
258define archhelp
259  @echo '* zImage - Build default images selected by kernel config'
260  @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
261  @echo ' uImage - U-Boot native image format'
262  @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
263  @echo ' versions which do not support device trees'
264  @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
265  @echo ' simpleImage.<dt> - Firmware independent image.'
266  @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
267  @echo ' install - Install kernel using'
268  @echo ' (your) ~/bin/$(INSTALLKERNEL) or'
269  @echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
270  @echo ' install to $$(INSTALL_PATH) and run lilo'
271  @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
272  @echo ''
273  @echo ' Targets with <dt> embed a device tree blob inside the image'
274  @echo ' These targets support board with firmware that does not'
275  @echo ' support passing a device tree directly. Replace <dt> with the'
276  @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
277  @echo ' (minus the .dts extension).'
278endef
279
280install:
281    $(Q)$(MAKE) $(build)=$(boot) install
282
283vdso_install:
284ifeq ($(CONFIG_PPC64),y)
285    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
286endif
287    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
288
289archclean:
290    $(Q)$(MAKE) $(clean)=$(boot)
291
292archprepare: checkbin
293
294# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
295# to stdout and these checks are run even on install targets.
296TOUT := .tmp_gas_check
297
298# Check gcc and binutils versions:
299# - gcc-3.4 and binutils-2.14 are a fatal combination
300# - Require gcc 4.0 or above on 64-bit
301# - gcc-4.2.0 has issues compiling modules on 64-bit
302checkbin:
303    @if test "$(call cc-version)" = "0304" ; then \
304        if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
305            echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
306            echo 'correctly with gcc-3.4 and your version of binutils.'; \
307            echo '*** Please upgrade your binutils or downgrade your gcc'; \
308            false; \
309        fi ; \
310    fi
311    @if test "$(call cc-version)" -lt "0400" \
312        && test "x${CONFIG_PPC64}" = "xy" ; then \
313                echo -n "Sorry, GCC v4.0 or above is required to build " ; \
314                echo "the 64-bit powerpc kernel." ; \
315                false ; \
316        fi
317    @if test "$(call cc-fullversion)" = "040200" \
318        && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
319        echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
320        echo 'kernel with modules enabled.' ; \
321        echo -n '*** Please use a different GCC version or ' ; \
322        echo 'disable kernel modules' ; \
323        false ; \
324    fi
325
326CLEAN_FILES += $(TOUT)
327
328

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