8a65e112211b7bd617d4c2d445095e1530b95c25
[linux-2.6.git] / arch / powerpc / Makefile
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
15 # This must match PAGE_OFFSET in include/asm-powerpc/page.h.
16 KERNELLOAD      := $(CONFIG_KERNEL_START)
17
18 HAS_BIARCH      := $(call cc-option-yn, -m32)
19
20 ifeq ($(CONFIG_PPC64),y)
21 SZ      := 64
22
23 # Set default 32 bits cross compilers for vdso and boot wrapper
24 CROSS32_COMPILE ?=
25
26 CROSS32CC               := $(CROSS32_COMPILE)gcc
27 CROSS32AS               := $(CROSS32_COMPILE)as
28 CROSS32LD               := $(CROSS32_COMPILE)ld
29 CROSS32OBJCOPY          := $(CROSS32_COMPILE)objcopy
30
31 ifeq ($(HAS_BIARCH),y)
32 ifeq ($(CROSS32_COMPILE),)
33 CROSS32CC       := $(CC) -m32
34 CROSS32AS       := $(AS) -a32
35 CROSS32LD       := $(LD) -m elf32ppc
36 CROSS32OBJCOPY  := $(OBJCOPY)
37 endif
38 endif
39
40 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
41
42 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
43
44 ifeq ($(new_nm),y)
45 NM              := $(NM) --synthetic
46 endif
47
48 else
49 SZ      := 32
50 endif
51
52 ifeq ($(HAS_BIARCH),y)
53 override AS     += -a$(SZ)
54 override LD     += -m elf$(SZ)ppc
55 override CC     += -m$(SZ)
56 endif
57
58 LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic -e $(KERNELLOAD)
59
60 # The -Iarch/$(ARCH)/include is temporary while we are merging
61 CPPFLAGS        += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
62 AFLAGS          += -Iarch/$(ARCH)
63 CFLAGS          += -Iarch/$(ARCH) -msoft-float -pipe
64 ifeq ($(CONFIG_PPC64),y)
65 CFLAGS          += -mminimal-toc -mtraceback=none  -mcall-aixdesc
66 else
67 CFLAGS          += -ffixed-r2 -mmultiple
68 endif
69 CPP             = $(CC) -E $(CFLAGS)
70 # Temporary hack until we have migrated to asm-powerpc
71 LINUXINCLUDE    += -Iarch/$(ARCH)/include
72
73 CHECKFLAGS      += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
74
75 ifeq ($(CONFIG_PPC64),y)
76 GCC_VERSION     := $(call cc-version)
77 GCC_BROKEN_VEC  := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi)
78
79 ifeq ($(CONFIG_POWER4_ONLY),y)
80 ifeq ($(CONFIG_ALTIVEC),y)
81 ifeq ($(GCC_BROKEN_VEC),y)
82         CFLAGS += $(call cc-option,-mcpu=970)
83 else
84         CFLAGS += $(call cc-option,-mcpu=power4)
85 endif
86 else
87         CFLAGS += $(call cc-option,-mcpu=power4)
88 endif
89 else
90         CFLAGS += $(call cc-option,-mtune=power4)
91 endif
92 endif
93
94 # Enable unit-at-a-time mode when possible. It shrinks the
95 # kernel considerably.
96 CFLAGS += $(call cc-option,-funit-at-a-time)
97
98 ifndef CONFIG_FSL_BOOKE
99 CFLAGS          += -mstring
100 endif
101
102 cpu-as-$(CONFIG_PPC64BRIDGE)    += -Wa,-mppc64bridge
103 cpu-as-$(CONFIG_4xx)            += -Wa,-m405
104 cpu-as-$(CONFIG_6xx)            += -Wa,-maltivec
105 cpu-as-$(CONFIG_POWER4)         += -Wa,-maltivec
106 cpu-as-$(CONFIG_E500)           += -Wa,-me500
107 cpu-as-$(CONFIG_E200)           += -Wa,-me200
108
109 AFLAGS += $(cpu-as-y)
110 CFLAGS += $(cpu-as-y)
111
112 # Default to the common case.
113 KBUILD_DEFCONFIG := common_defconfig
114
115 head-y                          := arch/powerpc/kernel/head.o
116 head-$(CONFIG_PPC64)            := arch/powerpc/kernel/head_64.o
117 head-$(CONFIG_8xx)              := arch/powerpc/kernel/head_8xx.o
118 head-$(CONFIG_4xx)              := arch/powerpc/kernel/head_4xx.o
119 head-$(CONFIG_44x)              := arch/powerpc/kernel/head_44x.o
120 head-$(CONFIG_FSL_BOOKE)        := arch/powerpc/kernel/head_fsl_booke.o
121
122 ifeq ($(CONFIG_PPC32),y)
123 head-$(CONFIG_6xx)              += arch/powerpc/kernel/idle_6xx.o
124 head-$(CONFIG_POWER4)           += arch/powerpc/kernel/idle_power4.o
125 head-$(CONFIG_PPC_FPU)          += arch/powerpc/kernel/fpu.o
126 endif
127
128 core-y                          += arch/powerpc/kernel/ \
129                                    arch/powerpc/mm/ \
130                                    arch/powerpc/lib/ \
131                                    arch/powerpc/sysdev/
132 core-$(CONFIG_PPC32)            += arch/ppc/kernel/ \
133                                    arch/ppc/syslib/
134 core-$(CONFIG_PPC64)            += arch/ppc64/kernel/
135 core-$(CONFIG_PPC_PMAC)         += arch/powerpc/platforms/powermac/
136 core-$(CONFIG_4xx)              += arch/ppc/platforms/4xx/
137 core-$(CONFIG_83xx)             += arch/ppc/platforms/83xx/
138 core-$(CONFIG_85xx)             += arch/ppc/platforms/85xx/
139 core-$(CONFIG_MATH_EMULATION)   += arch/ppc/math-emu/
140 core-$(CONFIG_XMON)             += arch/powerpc/xmon/
141 core-$(CONFIG_APUS)             += arch/ppc/amiga/
142 drivers-$(CONFIG_8xx)           += arch/ppc/8xx_io/
143 drivers-$(CONFIG_4xx)           += arch/ppc/4xx_io/
144 drivers-$(CONFIG_CPM2)          += arch/ppc/8260_io/
145
146 drivers-$(CONFIG_OPROFILE)      += arch/powerpc/oprofile/
147
148 BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
149
150 .PHONY: $(BOOT_TARGETS)
151
152 all: uImage zImage
153
154 CPPFLAGS_vmlinux.lds    := -Upowerpc
155
156 # All the instructions talk about "make bzImage".
157 bzImage: zImage
158
159 boot := arch/$(ARCH)/boot
160
161 $(BOOT_TARGETS): vmlinux
162         $(Q)$(MAKE) $(build)=$(boot) $@
163
164 uImage: vmlinux
165         $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
166
167 define archhelp
168   @echo '* zImage          - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
169   @echo '  uImage          - Create a bootable image for U-Boot / PPCBoot'
170   @echo '  install         - Install kernel using'
171   @echo '                    (your) ~/bin/installkernel or'
172   @echo '                    (distribution) /sbin/installkernel or'
173   @echo '                    install to $$(INSTALL_PATH) and run lilo'
174   @echo '  *_defconfig     - Select default config from arch/$(ARCH)/ppc/configs'
175 endef
176
177 archclean:
178         $(Q)$(MAKE) $(clean)=arch/ppc/boot
179         # Temporary hack until we have migrated to asm-powerpc
180         $(Q)rm -rf arch/$(ARCH)/include
181
182 archprepare: checkbin
183
184 # Temporary hack until we have migrated to asm-powerpc
185 ifeq ($(CONFIG_PPC64),y)
186 include/asm: arch/$(ARCH)/include/asm
187 arch/$(ARCH)/include/asm:
188         $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
189         $(Q)ln -fsn $(srctree)/include/asm-ppc64 arch/$(ARCH)/include/asm
190 else
191 include/asm: arch/$(ARCH)/include/asm
192 arch/$(ARCH)/include/asm:
193         $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
194         $(Q)ln -fsn $(srctree)/include/asm-ppc arch/$(ARCH)/include/asm
195 endif
196
197 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
198 # to stdout and these checks are run even on install targets.
199 TOUT    := .tmp_gas_check
200 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
201 # instructions.
202 # gcc-3.4 and binutils-2.14 are a fatal combination.
203 GCC_VERSION     := $(call cc-version)
204
205 checkbin:
206         @if test "$(GCC_VERSION)" = "0304" ; then \
207                 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
208                         echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
209                         echo 'correctly with gcc-3.4 and your version of binutils.'; \
210                         echo '*** Please upgrade your binutils or downgrade your gcc'; \
211                         false; \
212                 fi ; \
213         fi
214         @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
215                 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
216                 echo 'correctly with old versions of binutils.' ; \
217                 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
218                 false ; \
219         fi
220
221 CLEAN_FILES += $(TOUT)
222