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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 $(AR) | |
14cf11af PM |
64 | endif |
65 | ||
549e8152 PM |
66 | LDFLAGS_vmlinux-yy := -Bstatic |
67 | LDFLAGS_vmlinux-$(CONFIG_PPC64)$(CONFIG_RELOCATABLE) := -pie | |
68 | LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-yy) | |
14cf11af | 69 | |
bbeb3f4c | 70 | CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc |
1993cbf4 KG |
71 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple |
72 | KBUILD_CPPFLAGS += -Iarch/$(ARCH) | |
73 | KBUILD_AFLAGS += -Iarch/$(ARCH) | |
74 | KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) | |
a0f97e06 | 75 | CPP = $(CC) -E $(KBUILD_CFLAGS) |
14cf11af | 76 | |
2578bfae | 77 | CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
14cf11af PM |
78 | |
79 | ifeq ($(CONFIG_PPC64),y) | |
ad14336d | 80 | GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi) |
14cf11af PM |
81 | |
82 | ifeq ($(CONFIG_POWER4_ONLY),y) | |
83 | ifeq ($(CONFIG_ALTIVEC),y) | |
84 | ifeq ($(GCC_BROKEN_VEC),y) | |
a0f97e06 | 85 | KBUILD_CFLAGS += $(call cc-option,-mcpu=970) |
14cf11af | 86 | else |
a0f97e06 | 87 | KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) |
14cf11af PM |
88 | endif |
89 | else | |
a0f97e06 | 90 | KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) |
14cf11af PM |
91 | endif |
92 | else | |
a0f97e06 | 93 | KBUILD_CFLAGS += $(call cc-option,-mtune=power4) |
14cf11af | 94 | endif |
da3de6df KG |
95 | else |
96 | LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o | |
14cf11af PM |
97 | endif |
98 | ||
3164cccd | 99 | ifeq ($(CONFIG_TUNE_CELL),y) |
a0f97e06 | 100 | KBUILD_CFLAGS += $(call cc-option,-mtune=cell) |
3164cccd AB |
101 | endif |
102 | ||
d3f67fbb | 103 | # No AltiVec instruction when building kernel |
a0f97e06 | 104 | KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
d3f67fbb | 105 | |
0197cd2e KG |
106 | # No SPE instruction when building kernel |
107 | KBUILD_CFLAGS += $(call cc-option,-mno-spe) | |
108 | ||
14cf11af PM |
109 | # Enable unit-at-a-time mode when possible. It shrinks the |
110 | # kernel considerably. | |
a0f97e06 | 111 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
14cf11af | 112 | |
57647a4d BH |
113 | # Never use string load/store instructions as they are |
114 | # often slow when they are implemented at all | |
a0f97e06 | 115 | KBUILD_CFLAGS += -mno-string |
14cf11af | 116 | |
f48b8296 | 117 | ifeq ($(CONFIG_6xx),y) |
a0f97e06 | 118 | KBUILD_CFLAGS += -mcpu=powerpc |
f48b8296 OH |
119 | endif |
120 | ||
7563dc64 TB |
121 | # Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
122 | ifeq ($(CONFIG_FTRACE),y) | |
123 | KBUILD_CFLAGS += -mno-sched-epilog | |
124 | endif | |
125 | ||
14cf11af PM |
126 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
127 | cpu-as-$(CONFIG_6xx) += -Wa,-maltivec | |
128 | cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec | |
129 | cpu-as-$(CONFIG_E500) += -Wa,-me500 | |
130 | cpu-as-$(CONFIG_E200) += -Wa,-me200 | |
131 | ||
222d394d | 132 | KBUILD_AFLAGS += $(cpu-as-y) |
a0f97e06 | 133 | KBUILD_CFLAGS += $(cpu-as-y) |
14cf11af | 134 | |
2578bfae | 135 | head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
14cf11af | 136 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
15f6527e | 137 | head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
14cf11af PM |
138 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
139 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o | |
140 | ||
9994a338 | 141 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
14cf11af | 142 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
14cf11af | 143 | |
daec962e | 144 | core-y += arch/powerpc/kernel/ \ |
daec962e PM |
145 | arch/powerpc/mm/ \ |
146 | arch/powerpc/lib/ \ | |
147 | arch/powerpc/sysdev/ \ | |
148 | arch/powerpc/platforms/ | |
5cd27208 | 149 | core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/ |
f78541dc | 150 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
bbf45ba5 | 151 | core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
14cf11af PM |
152 | |
153 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
154 | ||
135f0b17 | 155 | # Default to zImage, override when needed |
25431333 | 156 | all: zImage |
14cf11af PM |
157 | |
158 | CPPFLAGS_vmlinux.lds := -Upowerpc | |
159 | ||
8d6bcd6e | 160 | BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.% |
cabb5587 | 161 | |
4f193362 | 162 | PHONY += $(BOOT_TARGETS) |
cabb5587 | 163 | |
94b212c2 | 164 | boot := arch/$(ARCH)/boot |
14cf11af | 165 | |
20f62954 PM |
166 | $(BOOT_TARGETS): vmlinux |
167 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
773f76b1 | 168 | |
e04018e8 | 169 | bootwrapper_install %.dtb: |
773f76b1 | 170 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
14cf11af PM |
171 | |
172 | define archhelp | |
70bf0333 GL |
173 | @echo '* zImage - Build default images selected by kernel config' |
174 | @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' | |
175 | @echo ' uImage - U-Boot native image format' | |
176 | @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' | |
177 | @echo ' versions which do not support device trees' | |
178 | @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' | |
179 | @echo ' simpleImage.<dt> - Firmware independent image.' | |
180 | @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' | |
14cf11af PM |
181 | @echo ' install - Install kernel using' |
182 | @echo ' (your) ~/bin/installkernel or' | |
183 | @echo ' (distribution) /sbin/installkernel or' | |
184 | @echo ' install to $$(INSTALL_PATH) and run lilo' | |
437a58db | 185 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
70bf0333 GL |
186 | @echo '' |
187 | @echo ' Targets with <dt> embed a device tree blob inside the image' | |
188 | @echo ' These targets support board with firmware that does not' | |
189 | @echo ' support passing a device tree directly. Replace <dt> with the' | |
190 | @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' | |
191 | @echo ' (minus the .dts extension).' | |
14cf11af PM |
192 | endef |
193 | ||
3f85d63e | 194 | install: |
25431333 | 195 | $(Q)$(MAKE) $(build)=$(boot) install |
928370c6 | 196 | |
8150caad RM |
197 | vdso_install: |
198 | ifeq ($(CONFIG_PPC64),y) | |
199 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ | |
200 | endif | |
201 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ | |
202 | ||
14cf11af | 203 | archclean: |
a3a9e99e | 204 | $(Q)$(MAKE) $(clean)=$(boot) |
70567293 | 205 | |
14cf11af PM |
206 | archprepare: checkbin |
207 | ||
14cf11af PM |
208 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
209 | # to stdout and these checks are run even on install targets. | |
210 | TOUT := .tmp_gas_check | |
211 | # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec | |
212 | # instructions. | |
213 | # gcc-3.4 and binutils-2.14 are a fatal combination. | |
14cf11af PM |
214 | |
215 | checkbin: | |
ad14336d | 216 | @if test "$(call cc-version)" = "0304" ; then \ |
14cf11af PM |
217 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
218 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ | |
219 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ | |
220 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ | |
221 | false; \ | |
222 | fi ; \ | |
223 | fi | |
f5e83fa4 SB |
224 | @if test "$(call cc-fullversion)" = "040200" \ |
225 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ | |
226 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ | |
227 | echo 'kernel with modules enabled.' ; \ | |
228 | echo -n '*** Please use a different GCC version or ' ; \ | |
229 | echo 'disable kernel modules' ; \ | |
230 | false ; \ | |
231 | fi | |
14cf11af PM |
232 | @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
233 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ | |
234 | echo 'correctly with old versions of binutils.' ; \ | |
235 | echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ | |
236 | false ; \ | |
237 | fi | |
238 | ||
239 | CLEAN_FILES += $(TOUT) | |
240 |