Root/arch/powerpc/Makefile

Source at commit 0de2b2b3be81048189a32f7a3d3ba0ba9ec817b6 created 11 years 11 months ago.
By Maarten ter Huurne, MIPS: JZ4740: Fixed value for round robin constant.
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)
39OLDARCH := ppc64
40
41new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
42
43ifeq ($(new_nm),y)
44NM := $(NM) --synthetic
45endif
46
47else
48OLDARCH := ppc
49endif
50
51# It seems there are times we use this Makefile without
52# including the config file, but this replicates the old behaviour
53ifeq ($(CONFIG_WORD_SIZE),)
54CONFIG_WORD_SIZE := 32
55endif
56
57UTS_MACHINE := $(OLDARCH)
58
59ifeq ($(HAS_BIARCH),y)
60override AS += -a$(CONFIG_WORD_SIZE)
61override LD += -m elf$(CONFIG_WORD_SIZE)ppc
62override CC += -m$(CONFIG_WORD_SIZE)
63override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
64endif
65
66LDFLAGS_vmlinux-y := -Bstatic
67LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
68LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
69
70CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc
71CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
72KBUILD_CPPFLAGS += -Iarch/$(ARCH)
73KBUILD_AFLAGS += -Iarch/$(ARCH)
74KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
75CPP = $(CC) -E $(KBUILD_CFLAGS)
76
77CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
78
79ifeq ($(CONFIG_PPC64),y)
80GCC_BROKEN_VEC := $(call cc-ifversion, -lt, 0400, y)
81
82ifeq ($(CONFIG_POWER4_ONLY),y)
83ifeq ($(CONFIG_ALTIVEC),y)
84ifeq ($(GCC_BROKEN_VEC),y)
85    KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
86else
87    KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
88endif
89else
90    KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
91endif
92else
93    KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
94endif
95endif
96
97KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
98
99ifeq ($(CONFIG_TUNE_CELL),y)
100    KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
101endif
102
103# No AltiVec instruction when building kernel
104KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
105
106# No SPE instruction when building kernel
107# (We use all available options to help semi-broken compilers)
108KBUILD_CFLAGS += $(call cc-option,-mno-spe)
109KBUILD_CFLAGS += $(call cc-option,-mspe=no)
110
111# Enable unit-at-a-time mode when possible. It shrinks the
112# kernel considerably.
113KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
114
115# FIXME: the module load should be taught about the additional relocs
116# generated by this.
117# revert to pre-gcc-4.4 behaviour of .eh_frame
118KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
119
120# Never use string load/store instructions as they are
121# often slow when they are implemented at all
122KBUILD_CFLAGS += -mno-string
123
124ifeq ($(CONFIG_6xx),y)
125KBUILD_CFLAGS += -mcpu=powerpc
126endif
127
128# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
129ifeq ($(CONFIG_FUNCTION_TRACER),y)
130KBUILD_CFLAGS += -mno-sched-epilog
131endif
132
133cpu-as-$(CONFIG_4xx) += -Wa,-m405
134cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec
135cpu-as-$(CONFIG_E500) += -Wa,-me500
136cpu-as-$(CONFIG_E200) += -Wa,-me200
137
138KBUILD_AFLAGS += $(cpu-as-y)
139KBUILD_CFLAGS += $(cpu-as-y)
140
141head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
142head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
143head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
144head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
145head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
146
147head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
148head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
149head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
150
151core-y += arch/powerpc/kernel/ \
152                   arch/powerpc/mm/ \
153                   arch/powerpc/lib/ \
154                   arch/powerpc/sysdev/ \
155                   arch/powerpc/platforms/ \
156                   arch/powerpc/math-emu/ \
157                   arch/powerpc/net/
158core-$(CONFIG_XMON) += arch/powerpc/xmon/
159core-$(CONFIG_KVM) += arch/powerpc/kvm/
160
161drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
162
163# Default to zImage, override when needed
164all: zImage
165
166# With make 3.82 we cannot mix normal and wildcard targets
167BOOT_TARGETS1 := zImage zImage.initrd uImage
168BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
169
170PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
171
172boot := arch/$(ARCH)/boot
173
174ifeq ($(CONFIG_RELOCATABLE),y)
175quiet_cmd_relocs_check = CALL $<
176      cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux"
177
178PHONY += relocs_check
179relocs_check: arch/powerpc/relocs_check.pl vmlinux
180    $(call cmd,relocs_check)
181
182zImage: relocs_check
183endif
184
185$(BOOT_TARGETS1): vmlinux
186    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
187$(BOOT_TARGETS2): vmlinux
188    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
189
190
191bootwrapper_install:
192    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
193
194%.dtb:
195    $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
196
197define archhelp
198  @echo '* zImage - Build default images selected by kernel config'
199  @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
200  @echo ' uImage - U-Boot native image format'
201  @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
202  @echo ' versions which do not support device trees'
203  @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
204  @echo ' simpleImage.<dt> - Firmware independent image.'
205  @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
206  @echo ' install - Install kernel using'
207  @echo ' (your) ~/bin/$(INSTALLKERNEL) or'
208  @echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
209  @echo ' install to $$(INSTALL_PATH) and run lilo'
210  @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
211  @echo ''
212  @echo ' Targets with <dt> embed a device tree blob inside the image'
213  @echo ' These targets support board with firmware that does not'
214  @echo ' support passing a device tree directly. Replace <dt> with the'
215  @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
216  @echo ' (minus the .dts extension).'
217endef
218
219install:
220    $(Q)$(MAKE) $(build)=$(boot) install
221
222vdso_install:
223ifeq ($(CONFIG_PPC64),y)
224    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
225endif
226    $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
227
228archclean:
229    $(Q)$(MAKE) $(clean)=$(boot)
230
231archprepare: checkbin
232
233# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
234# to stdout and these checks are run even on install targets.
235TOUT := .tmp_gas_check
236# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
237# instructions.
238# gcc-3.4 and binutils-2.14 are a fatal combination.
239
240checkbin:
241    @if test "$(call cc-version)" = "0304" ; then \
242        if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
243            echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
244            echo 'correctly with gcc-3.4 and your version of binutils.'; \
245            echo '*** Please upgrade your binutils or downgrade your gcc'; \
246            false; \
247        fi ; \
248    fi
249    @if test "$(call cc-fullversion)" = "040200" \
250        && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
251        echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
252        echo 'kernel with modules enabled.' ; \
253        echo -n '*** Please use a different GCC version or ' ; \
254        echo 'disable kernel modules' ; \
255        false ; \
256    fi
257
258CLEAN_FILES += $(TOUT)
259
260

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