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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 := $(shell uname -m)_defconfig |
ca786f83 AB |
34 | else |
35 | KBUILD_DEFCONFIG := ppc64_defconfig | |
36 | endif | |
8a5abdf8 | 37 | |
94b212c2 | 38 | ifeq ($(CONFIG_PPC64),y) |
14cf11af PM |
39 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
40 | ||
41 | ifeq ($(new_nm),y) | |
42 | NM := $(NM) --synthetic | |
43 | endif | |
a0588015 | 44 | endif |
14cf11af | 45 | |
a0588015 AB |
46 | ifeq ($(CONFIG_PPC64),y) |
47 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) | |
48 | OLDARCH := ppc64le | |
49 | else | |
50 | OLDARCH := ppc64 | |
51 | endif | |
52 | else | |
53 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) | |
54 | OLDARCH := ppcle | |
14cf11af | 55 | else |
bbeb3f4c | 56 | OLDARCH := ppc |
2578bfae | 57 | endif |
a0588015 | 58 | endif |
2578bfae SR |
59 | |
60 | # It seems there are times we use this Makefile without | |
61 | # including the config file, but this replicates the old behaviour | |
62 | ifeq ($(CONFIG_WORD_SIZE),) | |
63 | CONFIG_WORD_SIZE := 32 | |
14cf11af PM |
64 | endif |
65 | ||
190554db SR |
66 | UTS_MACHINE := $(OLDARCH) |
67 | ||
d72b0801 IM |
68 | ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
69 | override CC += -mlittle-endian | |
70 | override AS += -mlittle-endian | |
71 | override LD += -EL | |
72 | override CROSS32CC += -mlittle-endian | |
73 | override CROSS32AS += -mlittle-endian | |
74 | LDEMULATION := lppc | |
75 | GNUTARGET := powerpcle | |
76 | MULTIPLEWORD := -mno-multiple | |
77 | else | |
78 | override CC += -mbig-endian | |
79 | override AS += -mbig-endian | |
80 | override LD += -EB | |
81 | LDEMULATION := ppc | |
82 | GNUTARGET := powerpc | |
83 | MULTIPLEWORD := -mmultiple | |
84 | endif | |
85 | ||
14cf11af | 86 | ifeq ($(HAS_BIARCH),y) |
2578bfae | 87 | override AS += -a$(CONFIG_WORD_SIZE) |
d72b0801 | 88 | override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION) |
2578bfae | 89 | override CC += -m$(CONFIG_WORD_SIZE) |
d72b0801 | 90 | override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR) |
14cf11af PM |
91 | endif |
92 | ||
9c5f7d39 SP |
93 | LDFLAGS_vmlinux-y := -Bstatic |
94 | LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie | |
95 | LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) | |
14cf11af | 96 | |
1fbe9cf2 AB |
97 | ifeq ($(CONFIG_PPC64),y) |
98 | ifeq ($(call cc-option-yn,-mcmodel=medium),y) | |
99 | # -mcmodel=medium breaks modules because it uses 32bit offsets from | |
100 | # the TOC pointer to create pointers where possible. Pointers into the | |
101 | # percpu data area are created by this method. | |
102 | # | |
103 | # The kernel module loader relocates the percpu data section from the | |
104 | # original location (starting with 0xd...) to somewhere in the base | |
105 | # kernel percpu data space (starting with 0xc...). We need a full | |
106 | # 64bit relocation for this to work, hence -mcmodel=large. | |
107 | KBUILD_CFLAGS_MODULE += -mcmodel=large | |
108 | else | |
109 | export NO_MINIMAL_TOC := -mno-minimal-toc | |
110 | endif | |
111 | endif | |
112 | ||
113 | CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc | |
114 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) | |
98679fb0 | 115 | CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) |
d72b0801 | 116 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) |
d23c6fb4 | 117 | |
01718ba6 | 118 | ifeq ($(CONFIG_PPC_BOOK3S_64),y) |
d23c6fb4 | 119 | CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) |
01718ba6 SW |
120 | else |
121 | CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 | |
122 | endif | |
123 | ||
d23c6fb4 AB |
124 | CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) |
125 | CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) | |
126 | CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) | |
127 | CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) | |
128 | CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) | |
129 | ||
01718ba6 SW |
130 | E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64) |
131 | CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU) | |
132 | CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU)) | |
133 | ||
847f56b0 SW |
134 | ifeq ($(CONFIG_PPC32),y) |
135 | ifeq ($(CONFIG_PPC_E500MC),y) | |
136 | CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) | |
137 | else | |
138 | CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) | |
139 | endif | |
140 | endif | |
141 | ||
d23c6fb4 AB |
142 | CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) |
143 | ||
1993cbf4 | 144 | KBUILD_CPPFLAGS += -Iarch/$(ARCH) |
5ba840ec | 145 | KBUILD_AFLAGS += -Iarch/$(ARCH) |
1993cbf4 | 146 | KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) |
a0f97e06 | 147 | CPP = $(CC) -E $(KBUILD_CFLAGS) |
14cf11af | 148 | |
2578bfae | 149 | CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
14cf11af | 150 | |
772320e8 | 151 | KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
7fca5dc8 | 152 | |
d23c6fb4 | 153 | # No AltiVec or VSX instructions when building kernel |
a0f97e06 | 154 | KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
d23c6fb4 | 155 | KBUILD_CFLAGS += $(call cc-option,-mno-vsx) |
d3f67fbb | 156 | |
0197cd2e | 157 | # No SPE instruction when building kernel |
ce400c01 | 158 | # (We use all available options to help semi-broken compilers) |
0197cd2e | 159 | KBUILD_CFLAGS += $(call cc-option,-mno-spe) |
ce400c01 | 160 | KBUILD_CFLAGS += $(call cc-option,-mspe=no) |
0197cd2e | 161 | |
14cf11af PM |
162 | # Enable unit-at-a-time mode when possible. It shrinks the |
163 | # kernel considerably. | |
a0f97e06 | 164 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
14cf11af | 165 | |
d0679c73 AK |
166 | # FIXME: the module load should be taught about the additional relocs |
167 | # generated by this. | |
168 | # revert to pre-gcc-4.4 behaviour of .eh_frame | |
169 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) | |
170 | ||
57647a4d BH |
171 | # Never use string load/store instructions as they are |
172 | # often slow when they are implemented at all | |
a0f97e06 | 173 | KBUILD_CFLAGS += -mno-string |
14cf11af | 174 | |
f48b8296 | 175 | ifeq ($(CONFIG_6xx),y) |
a0f97e06 | 176 | KBUILD_CFLAGS += -mcpu=powerpc |
f48b8296 OH |
177 | endif |
178 | ||
7563dc64 | 179 | # Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
606576ce | 180 | ifeq ($(CONFIG_FUNCTION_TRACER),y) |
7563dc64 TB |
181 | KBUILD_CFLAGS += -mno-sched-epilog |
182 | endif | |
183 | ||
14cf11af | 184 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
e1fc235d | 185 | cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec |
14cf11af PM |
186 | cpu-as-$(CONFIG_E200) += -Wa,-me200 |
187 | ||
222d394d | 188 | KBUILD_AFLAGS += $(cpu-as-y) |
a0f97e06 | 189 | KBUILD_CFLAGS += $(cpu-as-y) |
14cf11af | 190 | |
2578bfae | 191 | head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
14cf11af | 192 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
15f6527e | 193 | head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
14cf11af PM |
194 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
195 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o | |
196 | ||
9994a338 | 197 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
14cf11af | 198 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
e821ea70 | 199 | head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o |
5ac47f7a | 200 | head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o |
14cf11af | 201 | |
daec962e | 202 | core-y += arch/powerpc/kernel/ \ |
daec962e PM |
203 | arch/powerpc/mm/ \ |
204 | arch/powerpc/lib/ \ | |
205 | arch/powerpc/sysdev/ \ | |
1a3d1fc2 | 206 | arch/powerpc/platforms/ \ |
0ca87f05 | 207 | arch/powerpc/math-emu/ \ |
323a6bf1 | 208 | arch/powerpc/crypto/ \ |
0ca87f05 | 209 | arch/powerpc/net/ |
f78541dc | 210 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
bbf45ba5 | 211 | core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
f2699491 | 212 | core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ |
14cf11af PM |
213 | |
214 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
215 | ||
135f0b17 | 216 | # Default to zImage, override when needed |
25431333 | 217 | all: zImage |
14cf11af | 218 | |
e32e78c5 | 219 | # With make 3.82 we cannot mix normal and wildcard targets |
c686ecf5 | 220 | BOOT_TARGETS1 := zImage zImage.initrd uImage |
11eab297 | 221 | BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% |
cabb5587 | 222 | |
e32e78c5 | 223 | PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) |
cabb5587 | 224 | |
94b212c2 | 225 | boot := arch/$(ARCH)/boot |
14cf11af | 226 | |
144ef909 TB |
227 | ifeq ($(CONFIG_RELOCATABLE),y) |
228 | quiet_cmd_relocs_check = CALL $< | |
229 | cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" | |
230 | ||
231 | PHONY += relocs_check | |
232 | relocs_check: arch/powerpc/relocs_check.pl vmlinux | |
233 | $(call cmd,relocs_check) | |
234 | ||
235 | zImage: relocs_check | |
236 | endif | |
237 | ||
e32e78c5 SR |
238 | $(BOOT_TARGETS1): vmlinux |
239 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
240 | $(BOOT_TARGETS2): vmlinux | |
241 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
242 | ||
243 | ||
244 | bootwrapper_install: | |
20f62954 | 245 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
773f76b1 | 246 | |
8662d0bc | 247 | %.dtb: scripts |
773f76b1 | 248 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
14cf11af PM |
249 | |
250 | define archhelp | |
70bf0333 GL |
251 | @echo '* zImage - Build default images selected by kernel config' |
252 | @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' | |
253 | @echo ' uImage - U-Boot native image format' | |
254 | @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' | |
255 | @echo ' versions which do not support device trees' | |
256 | @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' | |
257 | @echo ' simpleImage.<dt> - Firmware independent image.' | |
258 | @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' | |
14cf11af | 259 | @echo ' install - Install kernel using' |
caa27b66 SR |
260 | @echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
261 | @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' | |
14cf11af | 262 | @echo ' install to $$(INSTALL_PATH) and run lilo' |
437a58db | 263 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
70bf0333 GL |
264 | @echo '' |
265 | @echo ' Targets with <dt> embed a device tree blob inside the image' | |
266 | @echo ' These targets support board with firmware that does not' | |
267 | @echo ' support passing a device tree directly. Replace <dt> with the' | |
268 | @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' | |
269 | @echo ' (minus the .dts extension).' | |
14cf11af PM |
270 | endef |
271 | ||
3f85d63e | 272 | install: |
25431333 | 273 | $(Q)$(MAKE) $(build)=$(boot) install |
928370c6 | 274 | |
8150caad RM |
275 | vdso_install: |
276 | ifeq ($(CONFIG_PPC64),y) | |
277 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ | |
278 | endif | |
279 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ | |
280 | ||
14cf11af | 281 | archclean: |
a3a9e99e | 282 | $(Q)$(MAKE) $(clean)=$(boot) |
70567293 | 283 | |
14cf11af PM |
284 | archprepare: checkbin |
285 | ||
14cf11af PM |
286 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
287 | # to stdout and these checks are run even on install targets. | |
288 | TOUT := .tmp_gas_check | |
14cf11af | 289 | |
82a85084 AB |
290 | # Check gcc and binutils versions: |
291 | # - gcc-3.4 and binutils-2.14 are a fatal combination | |
292 | # - Require gcc 4.0 or above on 64-bit | |
293 | # - gcc-4.2.0 has issues compiling modules on 64-bit | |
14cf11af | 294 | checkbin: |
ad14336d | 295 | @if test "$(call cc-version)" = "0304" ; then \ |
14cf11af PM |
296 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
297 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ | |
298 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ | |
299 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ | |
300 | false; \ | |
301 | fi ; \ | |
302 | fi | |
82a85084 AB |
303 | @if test "$(call cc-version)" -lt "0400" \ |
304 | && test "x${CONFIG_PPC64}" = "xy" ; then \ | |
305 | echo -n "Sorry, GCC v4.0 or above is required to build " ; \ | |
306 | echo "the 64-bit powerpc kernel." ; \ | |
307 | false ; \ | |
308 | fi | |
f5e83fa4 SB |
309 | @if test "$(call cc-fullversion)" = "040200" \ |
310 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ | |
311 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ | |
312 | echo 'kernel with modules enabled.' ; \ | |
313 | echo -n '*** Please use a different GCC version or ' ; \ | |
314 | echo 'disable kernel modules' ; \ | |
315 | false ; \ | |
316 | fi | |
14cf11af PM |
317 | |
318 | CLEAN_FILES += $(TOUT) | |
319 |