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14cf11af PM |
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 | ||
14cf11af PM |
15 | HAS_BIARCH := $(call cc-option-yn, -m32) |
16 | ||
14cf11af PM |
17 | # Set default 32 bits cross compilers for vdso and boot wrapper |
18 | CROSS32_COMPILE ?= | |
19 | ||
20 | CROSS32CC := $(CROSS32_COMPILE)gcc | |
2bf11819 | 21 | CROSS32AR := $(CROSS32_COMPILE)ar |
14cf11af PM |
22 | |
23 | ifeq ($(HAS_BIARCH),y) | |
24 | ifeq ($(CROSS32_COMPILE),) | |
25 | CROSS32CC := $(CC) -m32 | |
8995ac87 | 26 | CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
14cf11af PM |
27 | endif |
28 | endif | |
29 | ||
1976aef9 | 30 | export CROSS32CC CROSS32AR |
14cf11af | 31 | |
ca786f83 | 32 | ifeq ($(CROSS_COMPILE),) |
8a5abdf8 | 33 | KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
ca786f83 AB |
34 | else |
35 | KBUILD_DEFCONFIG := ppc64_defconfig | |
36 | endif | |
8a5abdf8 | 37 | |
94b212c2 PM |
38 | ifeq ($(CONFIG_PPC64),y) |
39 | OLDARCH := ppc64 | |
94b212c2 | 40 | |
14cf11af PM |
41 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
42 | ||
43 | ifeq ($(new_nm),y) | |
44 | NM := $(NM) --synthetic | |
45 | endif | |
46 | ||
47 | else | |
bbeb3f4c | 48 | OLDARCH := ppc |
2578bfae SR |
49 | endif |
50 | ||
51 | # It seems there are times we use this Makefile without | |
52 | # including the config file, but this replicates the old behaviour | |
53 | ifeq ($(CONFIG_WORD_SIZE),) | |
54 | CONFIG_WORD_SIZE := 32 | |
14cf11af PM |
55 | endif |
56 | ||
190554db SR |
57 | UTS_MACHINE := $(OLDARCH) |
58 | ||
14cf11af | 59 | ifeq ($(HAS_BIARCH),y) |
2578bfae SR |
60 | override AS += -a$(CONFIG_WORD_SIZE) |
61 | override LD += -m elf$(CONFIG_WORD_SIZE)ppc | |
62 | override CC += -m$(CONFIG_WORD_SIZE) | |
63 | override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR) | |
14cf11af PM |
64 | endif |
65 | ||
9c5f7d39 SP |
66 | LDFLAGS_vmlinux-y := -Bstatic |
67 | LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie | |
68 | LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) | |
14cf11af | 69 | |
1fbe9cf2 AB |
70 | ifeq ($(CONFIG_PPC64),y) |
71 | ifeq ($(call cc-option-yn,-mcmodel=medium),y) | |
72 | # -mcmodel=medium breaks modules because it uses 32bit offsets from | |
73 | # the TOC pointer to create pointers where possible. Pointers into the | |
74 | # percpu data area are created by this method. | |
75 | # | |
76 | # The kernel module loader relocates the percpu data section from the | |
77 | # original location (starting with 0xd...) to somewhere in the base | |
78 | # kernel percpu data space (starting with 0xc...). We need a full | |
79 | # 64bit relocation for this to work, hence -mcmodel=large. | |
80 | KBUILD_CFLAGS_MODULE += -mcmodel=large | |
81 | else | |
82 | export NO_MINIMAL_TOC := -mno-minimal-toc | |
83 | endif | |
84 | endif | |
85 | ||
86 | CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc | |
87 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) | |
98679fb0 | 88 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) |
1993cbf4 | 89 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple |
d23c6fb4 AB |
90 | |
91 | CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) | |
92 | CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) | |
93 | CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) | |
94 | CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) | |
95 | CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) | |
96 | CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) | |
97 | ||
98 | CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) | |
99 | ||
1993cbf4 | 100 | KBUILD_CPPFLAGS += -Iarch/$(ARCH) |
5ba840ec | 101 | KBUILD_AFLAGS += -Iarch/$(ARCH) |
1993cbf4 | 102 | KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) |
a0f97e06 | 103 | CPP = $(CC) -E $(KBUILD_CFLAGS) |
14cf11af | 104 | |
2578bfae | 105 | CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
14cf11af | 106 | |
772320e8 | 107 | KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
7fca5dc8 | 108 | |
d23c6fb4 | 109 | # No AltiVec or VSX instructions when building kernel |
a0f97e06 | 110 | KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
d23c6fb4 | 111 | KBUILD_CFLAGS += $(call cc-option,-mno-vsx) |
d3f67fbb | 112 | |
0197cd2e | 113 | # No SPE instruction when building kernel |
ce400c01 | 114 | # (We use all available options to help semi-broken compilers) |
0197cd2e | 115 | KBUILD_CFLAGS += $(call cc-option,-mno-spe) |
ce400c01 | 116 | KBUILD_CFLAGS += $(call cc-option,-mspe=no) |
0197cd2e | 117 | |
14cf11af PM |
118 | # Enable unit-at-a-time mode when possible. It shrinks the |
119 | # kernel considerably. | |
a0f97e06 | 120 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
14cf11af | 121 | |
d0679c73 AK |
122 | # FIXME: the module load should be taught about the additional relocs |
123 | # generated by this. | |
124 | # revert to pre-gcc-4.4 behaviour of .eh_frame | |
125 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) | |
126 | ||
57647a4d BH |
127 | # Never use string load/store instructions as they are |
128 | # often slow when they are implemented at all | |
a0f97e06 | 129 | KBUILD_CFLAGS += -mno-string |
14cf11af | 130 | |
f48b8296 | 131 | ifeq ($(CONFIG_6xx),y) |
a0f97e06 | 132 | KBUILD_CFLAGS += -mcpu=powerpc |
f48b8296 OH |
133 | endif |
134 | ||
7563dc64 | 135 | # Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
606576ce | 136 | ifeq ($(CONFIG_FUNCTION_TRACER),y) |
7563dc64 TB |
137 | KBUILD_CFLAGS += -mno-sched-epilog |
138 | endif | |
139 | ||
14cf11af | 140 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
e1fc235d | 141 | cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec |
14cf11af PM |
142 | cpu-as-$(CONFIG_E200) += -Wa,-me200 |
143 | ||
222d394d | 144 | KBUILD_AFLAGS += $(cpu-as-y) |
a0f97e06 | 145 | KBUILD_CFLAGS += $(cpu-as-y) |
14cf11af | 146 | |
2578bfae | 147 | head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
14cf11af | 148 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
15f6527e | 149 | head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
14cf11af PM |
150 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
151 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o | |
152 | ||
9994a338 | 153 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
14cf11af | 154 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
e821ea70 | 155 | head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o |
5ac47f7a | 156 | head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o |
14cf11af | 157 | |
daec962e | 158 | core-y += arch/powerpc/kernel/ \ |
daec962e PM |
159 | arch/powerpc/mm/ \ |
160 | arch/powerpc/lib/ \ | |
161 | arch/powerpc/sysdev/ \ | |
1a3d1fc2 | 162 | arch/powerpc/platforms/ \ |
0ca87f05 | 163 | arch/powerpc/math-emu/ \ |
323a6bf1 | 164 | arch/powerpc/crypto/ \ |
0ca87f05 | 165 | arch/powerpc/net/ |
f78541dc | 166 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
bbf45ba5 | 167 | core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
f2699491 | 168 | core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ |
14cf11af PM |
169 | |
170 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
171 | ||
135f0b17 | 172 | # Default to zImage, override when needed |
25431333 | 173 | all: zImage |
14cf11af | 174 | |
e32e78c5 | 175 | # With make 3.82 we cannot mix normal and wildcard targets |
c686ecf5 | 176 | BOOT_TARGETS1 := zImage zImage.initrd uImage |
11eab297 | 177 | BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% |
cabb5587 | 178 | |
e32e78c5 | 179 | PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) |
cabb5587 | 180 | |
94b212c2 | 181 | boot := arch/$(ARCH)/boot |
14cf11af | 182 | |
144ef909 TB |
183 | ifeq ($(CONFIG_RELOCATABLE),y) |
184 | quiet_cmd_relocs_check = CALL $< | |
185 | cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" | |
186 | ||
187 | PHONY += relocs_check | |
188 | relocs_check: arch/powerpc/relocs_check.pl vmlinux | |
189 | $(call cmd,relocs_check) | |
190 | ||
191 | zImage: relocs_check | |
192 | endif | |
193 | ||
e32e78c5 SR |
194 | $(BOOT_TARGETS1): vmlinux |
195 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
196 | $(BOOT_TARGETS2): vmlinux | |
197 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
198 | ||
199 | ||
200 | bootwrapper_install: | |
20f62954 | 201 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
773f76b1 | 202 | |
8662d0bc | 203 | %.dtb: scripts |
773f76b1 | 204 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
14cf11af PM |
205 | |
206 | define archhelp | |
70bf0333 GL |
207 | @echo '* zImage - Build default images selected by kernel config' |
208 | @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' | |
209 | @echo ' uImage - U-Boot native image format' | |
210 | @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' | |
211 | @echo ' versions which do not support device trees' | |
212 | @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' | |
213 | @echo ' simpleImage.<dt> - Firmware independent image.' | |
214 | @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' | |
14cf11af | 215 | @echo ' install - Install kernel using' |
caa27b66 SR |
216 | @echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
217 | @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' | |
14cf11af | 218 | @echo ' install to $$(INSTALL_PATH) and run lilo' |
437a58db | 219 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
70bf0333 GL |
220 | @echo '' |
221 | @echo ' Targets with <dt> embed a device tree blob inside the image' | |
222 | @echo ' These targets support board with firmware that does not' | |
223 | @echo ' support passing a device tree directly. Replace <dt> with the' | |
224 | @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' | |
225 | @echo ' (minus the .dts extension).' | |
14cf11af PM |
226 | endef |
227 | ||
3f85d63e | 228 | install: |
25431333 | 229 | $(Q)$(MAKE) $(build)=$(boot) install |
928370c6 | 230 | |
8150caad RM |
231 | vdso_install: |
232 | ifeq ($(CONFIG_PPC64),y) | |
233 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ | |
234 | endif | |
235 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ | |
236 | ||
14cf11af | 237 | archclean: |
a3a9e99e | 238 | $(Q)$(MAKE) $(clean)=$(boot) |
70567293 | 239 | |
14cf11af PM |
240 | archprepare: checkbin |
241 | ||
14cf11af PM |
242 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
243 | # to stdout and these checks are run even on install targets. | |
244 | TOUT := .tmp_gas_check | |
14cf11af | 245 | |
82a85084 AB |
246 | # Check gcc and binutils versions: |
247 | # - gcc-3.4 and binutils-2.14 are a fatal combination | |
248 | # - Require gcc 4.0 or above on 64-bit | |
249 | # - gcc-4.2.0 has issues compiling modules on 64-bit | |
14cf11af | 250 | checkbin: |
ad14336d | 251 | @if test "$(call cc-version)" = "0304" ; then \ |
14cf11af PM |
252 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
253 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ | |
254 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ | |
255 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ | |
256 | false; \ | |
257 | fi ; \ | |
258 | fi | |
82a85084 AB |
259 | @if test "$(call cc-version)" -lt "0400" \ |
260 | && test "x${CONFIG_PPC64}" = "xy" ; then \ | |
261 | echo -n "Sorry, GCC v4.0 or above is required to build " ; \ | |
262 | echo "the 64-bit powerpc kernel." ; \ | |
263 | false ; \ | |
264 | fi | |
f5e83fa4 SB |
265 | @if test "$(call cc-fullversion)" = "040200" \ |
266 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ | |
267 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ | |
268 | echo 'kernel with modules enabled.' ; \ | |
269 | echo -n '*** Please use a different GCC version or ' ; \ | |
270 | echo 'disable kernel modules' ; \ | |
271 | false ; \ | |
272 | fi | |
14cf11af PM |
273 | |
274 | CLEAN_FILES += $(TOUT) | |
275 |