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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 | |
21 | CROSS32AS := $(CROSS32_COMPILE)as | |
22 | CROSS32LD := $(CROSS32_COMPILE)ld | |
2bf11819 | 23 | CROSS32AR := $(CROSS32_COMPILE)ar |
14cf11af PM |
24 | CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy |
25 | ||
26 | ifeq ($(HAS_BIARCH),y) | |
27 | ifeq ($(CROSS32_COMPILE),) | |
28 | CROSS32CC := $(CC) -m32 | |
29 | CROSS32AS := $(AS) -a32 | |
30 | CROSS32LD := $(LD) -m elf32ppc | |
31 | CROSS32OBJCOPY := $(OBJCOPY) | |
8995ac87 | 32 | CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
14cf11af PM |
33 | endif |
34 | endif | |
35 | ||
2bf11819 | 36 | export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY |
14cf11af | 37 | |
8a5abdf8 PM |
38 | KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
39 | ||
94b212c2 PM |
40 | ifeq ($(CONFIG_PPC64),y) |
41 | OLDARCH := ppc64 | |
42 | SZ := 64 | |
43 | ||
14cf11af PM |
44 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
45 | ||
46 | ifeq ($(new_nm),y) | |
47 | NM := $(NM) --synthetic | |
48 | endif | |
49 | ||
50 | else | |
bbeb3f4c | 51 | OLDARCH := ppc |
14cf11af PM |
52 | SZ := 32 |
53 | endif | |
54 | ||
190554db SR |
55 | UTS_MACHINE := $(OLDARCH) |
56 | ||
14cf11af PM |
57 | ifeq ($(HAS_BIARCH),y) |
58 | override AS += -a$(SZ) | |
59 | override LD += -m elf$(SZ)ppc | |
60 | override CC += -m$(SZ) | |
8995ac87 | 61 | override AR := GNUTARGET=elf$(SZ)-powerpc $(AR) |
14cf11af PM |
62 | endif |
63 | ||
e19e4ab4 | 64 | LDFLAGS_vmlinux := -Bstatic |
14cf11af PM |
65 | |
66 | # The -Iarch/$(ARCH)/include is temporary while we are merging | |
55bb239e SR |
67 | CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include |
68 | AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) | |
bbeb3f4c | 69 | CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc |
55bb239e SR |
70 | CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple |
71 | CPPFLAGS += $(CPPFLAGS-y) | |
72 | AFLAGS += $(AFLAGS-y) | |
73 | CFLAGS += -msoft-float -pipe $(CFLAGS-y) | |
14cf11af PM |
74 | CPP = $(CC) -E $(CFLAGS) |
75 | # Temporary hack until we have migrated to asm-powerpc | |
55bb239e SR |
76 | LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include |
77 | LINUXINCLUDE += $(LINUXINCLUDE-y) | |
14cf11af PM |
78 | |
79 | CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__ | |
80 | ||
81 | ifeq ($(CONFIG_PPC64),y) | |
ad14336d | 82 | GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi) |
14cf11af PM |
83 | |
84 | ifeq ($(CONFIG_POWER4_ONLY),y) | |
85 | ifeq ($(CONFIG_ALTIVEC),y) | |
86 | ifeq ($(GCC_BROKEN_VEC),y) | |
87 | CFLAGS += $(call cc-option,-mcpu=970) | |
88 | else | |
89 | CFLAGS += $(call cc-option,-mcpu=power4) | |
90 | endif | |
91 | else | |
92 | CFLAGS += $(call cc-option,-mcpu=power4) | |
93 | endif | |
94 | else | |
95 | CFLAGS += $(call cc-option,-mtune=power4) | |
96 | endif | |
97 | endif | |
98 | ||
d3f67fbb PM |
99 | # No AltiVec instruction when building kernel |
100 | CFLAGS += $(call cc-option,-mno-altivec) | |
101 | ||
14cf11af PM |
102 | # Enable unit-at-a-time mode when possible. It shrinks the |
103 | # kernel considerably. | |
104 | CFLAGS += $(call cc-option,-funit-at-a-time) | |
105 | ||
57647a4d BH |
106 | # Never use string load/store instructions as they are |
107 | # often slow when they are implemented at all | |
108 | CFLAGS += -mno-string | |
14cf11af | 109 | |
f48b8296 OH |
110 | ifeq ($(CONFIG_6xx),y) |
111 | CFLAGS += -mcpu=powerpc | |
112 | endif | |
113 | ||
14cf11af PM |
114 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
115 | cpu-as-$(CONFIG_6xx) += -Wa,-maltivec | |
116 | cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec | |
117 | cpu-as-$(CONFIG_E500) += -Wa,-me500 | |
118 | cpu-as-$(CONFIG_E200) += -Wa,-me200 | |
119 | ||
120 | AFLAGS += $(cpu-as-y) | |
121 | CFLAGS += $(cpu-as-y) | |
122 | ||
70d64cea | 123 | head-y := arch/powerpc/kernel/head_32.o |
14cf11af PM |
124 | head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o |
125 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o | |
126 | head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o | |
127 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o | |
128 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o | |
129 | ||
9994a338 | 130 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
14cf11af | 131 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
14cf11af | 132 | |
daec962e | 133 | core-y += arch/powerpc/kernel/ \ |
daec962e PM |
134 | arch/powerpc/mm/ \ |
135 | arch/powerpc/lib/ \ | |
136 | arch/powerpc/sysdev/ \ | |
137 | arch/powerpc/platforms/ | |
5cd27208 | 138 | core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/ |
f78541dc | 139 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
14cf11af PM |
140 | |
141 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
142 | ||
135f0b17 TR |
143 | # Default to zImage, override when needed |
144 | defaultimage-y := zImage | |
f4fc4a5b | 145 | defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage |
cabb5587 SR |
146 | KBUILD_IMAGE := $(defaultimage-y) |
147 | all: $(KBUILD_IMAGE) | |
14cf11af PM |
148 | |
149 | CPPFLAGS_vmlinux.lds := -Upowerpc | |
150 | ||
941b7adf | 151 | BOOT_TARGETS = zImage zImage.initrd uImage |
cabb5587 | 152 | |
4f193362 | 153 | PHONY += $(BOOT_TARGETS) |
cabb5587 | 154 | |
94b212c2 | 155 | boot := arch/$(ARCH)/boot |
14cf11af | 156 | |
20f62954 PM |
157 | $(BOOT_TARGETS): vmlinux |
158 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
14cf11af PM |
159 | |
160 | define archhelp | |
94b212c2 | 161 | @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' |
14cf11af PM |
162 | @echo ' install - Install kernel using' |
163 | @echo ' (your) ~/bin/installkernel or' | |
164 | @echo ' (distribution) /sbin/installkernel or' | |
165 | @echo ' install to $$(INSTALL_PATH) and run lilo' | |
437a58db | 166 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
14cf11af PM |
167 | endef |
168 | ||
928370c6 AM |
169 | install: |
170 | $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install | |
171 | ||
14cf11af | 172 | archclean: |
a3a9e99e | 173 | $(Q)$(MAKE) $(clean)=$(boot) |
70567293 AG |
174 | |
175 | archmrproper: | |
14cf11af PM |
176 | $(Q)rm -rf arch/$(ARCH)/include |
177 | ||
178 | archprepare: checkbin | |
179 | ||
55bb239e | 180 | ifeq ($(CONFIG_PPC32),y) |
14cf11af | 181 | # Temporary hack until we have migrated to asm-powerpc |
14cf11af | 182 | include/asm: arch/$(ARCH)/include/asm |
50092b23 | 183 | arch/$(ARCH)/include/asm: FORCE |
14cf11af | 184 | $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi |
bbeb3f4c | 185 | $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm |
55bb239e | 186 | endif |
14cf11af PM |
187 | |
188 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output | |
189 | # to stdout and these checks are run even on install targets. | |
190 | TOUT := .tmp_gas_check | |
191 | # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec | |
192 | # instructions. | |
193 | # gcc-3.4 and binutils-2.14 are a fatal combination. | |
14cf11af PM |
194 | |
195 | checkbin: | |
ad14336d | 196 | @if test "$(call cc-version)" = "0304" ; then \ |
14cf11af PM |
197 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
198 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ | |
199 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ | |
200 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ | |
201 | false; \ | |
202 | fi ; \ | |
203 | fi | |
f5e83fa4 SB |
204 | @if test "$(call cc-fullversion)" = "040200" \ |
205 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ | |
206 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ | |
207 | echo 'kernel with modules enabled.' ; \ | |
208 | echo -n '*** Please use a different GCC version or ' ; \ | |
209 | echo 'disable kernel modules' ; \ | |
210 | false ; \ | |
211 | fi | |
14cf11af PM |
212 | @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
213 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ | |
214 | echo 'correctly with old versions of binutils.' ; \ | |
215 | echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ | |
216 | false ; \ | |
217 | fi | |
218 | ||
219 | CLEAN_FILES += $(TOUT) | |
220 |