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Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# 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
Paul Mackerras14cf11a2005-09-26 16:04:21 +100015HAS_BIARCH := $(call cc-option-yn, -m32)
16
Paul Mackerras14cf11a2005-09-26 16:04:21 +100017# Set default 32 bits cross compilers for vdso and boot wrapper
18CROSS32_COMPILE ?=
19
20CROSS32CC := $(CROSS32_COMPILE)gcc
Paul Mackerras2bf11812006-09-27 22:47:03 +100021CROSS32AR := $(CROSS32_COMPILE)ar
Paul Mackerras14cf11a2005-09-26 16:04:21 +100022
23ifeq ($(HAS_BIARCH),y)
24ifeq ($(CROSS32_COMPILE),)
25CROSS32CC := $(CC) -m32
Segher Boessenkool8995ac82007-05-16 22:34:38 +100026CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100027endif
28endif
29
Segher Boessenkool1976aef2008-06-08 09:42:52 +100030export CROSS32CC CROSS32AR
Paul Mackerras14cf11a2005-09-26 16:04:21 +100031
Adrian Bunkca786f82007-10-02 13:30:09 -070032ifeq ($(CROSS_COMPILE),)
Paul Mackerras8a5abdf2005-11-18 16:39:08 +110033KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
Adrian Bunkca786f82007-10-02 13:30:09 -070034else
35KBUILD_DEFCONFIG := ppc64_defconfig
36endif
Paul Mackerras8a5abdf2005-11-18 16:39:08 +110037
Paul Mackerras94b212c2005-11-16 13:38:21 +110038ifeq ($(CONFIG_PPC64),y)
39OLDARCH := ppc64
Paul Mackerras94b212c2005-11-16 13:38:21 +110040
Paul Mackerras14cf11a2005-09-26 16:04:21 +100041new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
42
43ifeq ($(new_nm),y)
44NM := $(NM) --synthetic
45endif
46
47else
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100048OLDARCH := ppc
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100049endif
50
51# It seems there are times we use this Makefile without
52# including the config file, but this replicates the old behaviour
53ifeq ($(CONFIG_WORD_SIZE),)
54CONFIG_WORD_SIZE := 32
Paul Mackerras14cf11a2005-09-26 16:04:21 +100055endif
56
Stephen Rothwell190554d2005-10-13 16:14:15 +100057UTS_MACHINE := $(OLDARCH)
58
Paul Mackerras14cf11a2005-09-26 16:04:21 +100059ifeq ($(HAS_BIARCH),y)
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100060override AS += -a$(CONFIG_WORD_SIZE)
61override LD += -m elf$(CONFIG_WORD_SIZE)ppc
62override CC += -m$(CONFIG_WORD_SIZE)
63override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100064endif
65
Paul Mackerras549e8152008-08-30 11:43:47 +100066LDFLAGS_vmlinux-yy := -Bstatic
67LDFLAGS_vmlinux-$(CONFIG_PPC64)$(CONFIG_RELOCATABLE) := -pie
68LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-yy)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100069
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100070CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
Kumar Gala1993cbf2008-04-16 05:52:20 +100071CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
72KBUILD_CPPFLAGS += -Iarch/$(ARCH)
73KBUILD_AFLAGS += -Iarch/$(ARCH)
74KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +020075CPP = $(CC) -E $(KBUILD_CFLAGS)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100076
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100077CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
Paul Mackerras14cf11a2005-09-26 16:04:21 +100078
79ifeq ($(CONFIG_PPC64),y)
Sam Ravnborgad143362006-01-08 19:58:51 +010080GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100081
82ifeq ($(CONFIG_POWER4_ONLY),y)
83ifeq ($(CONFIG_ALTIVEC),y)
84ifeq ($(GCC_BROKEN_VEC),y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +020085 KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100086else
Sam Ravnborga0f97e02007-10-14 22:21:35 +020087 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100088endif
89else
Sam Ravnborga0f97e02007-10-14 22:21:35 +020090 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100091endif
92else
Sam Ravnborga0f97e02007-10-14 22:21:35 +020093 KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100094endif
Kumar Galada3de6d2008-06-13 07:20:58 +100095else
96LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +100097endif
98
Arnd Bergmann3164ccc2007-09-15 10:21:57 +100099ifeq ($(CONFIG_TUNE_CELL),y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200100 KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
Arnd Bergmann3164ccc2007-09-15 10:21:57 +1000101endif
102
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +1000103# No AltiVec instruction when building kernel
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200104KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +1000105
Kumar Gala0197cd22007-10-18 16:53:19 -0500106# No SPE instruction when building kernel
Thiemo Seuferce400c02008-09-02 00:23:02 +1000107# (We use all available options to help semi-broken compilers)
Kumar Gala0197cd22007-10-18 16:53:19 -0500108KBUILD_CFLAGS += $(call cc-option,-mno-spe)
Thiemo Seuferce400c02008-09-02 00:23:02 +1000109KBUILD_CFLAGS += $(call cc-option,-mspe=no)
110KBUILD_CFLAGS += $(call cc-option,-mabi=no-spe)
Kumar Gala0197cd22007-10-18 16:53:19 -0500111
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000112# Enable unit-at-a-time mode when possible. It shrinks the
113# kernel considerably.
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200114KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000115
Benjamin Herrenschmidt57647a42007-03-22 17:23:44 +1100116# Never use string load/store instructions as they are
117# often slow when they are implemented at all
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200118KBUILD_CFLAGS += -mno-string
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000119
Olaf Heringf48b8292006-04-11 20:42:08 +0200120ifeq ($(CONFIG_6xx),y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200121KBUILD_CFLAGS += -mcpu=powerpc
Olaf Heringf48b8292006-04-11 20:42:08 +0200122endif
123
Tony Breeds7563dc62008-09-02 16:50:38 +1000124# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
Steven Rostedt606576c2008-10-06 19:06:12 -0400125ifeq ($(CONFIG_FUNCTION_TRACER),y)
Tony Breeds7563dc62008-09-02 16:50:38 +1000126KBUILD_CFLAGS += -mno-sched-epilog
127endif
128
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000129cpu-as-$(CONFIG_4xx) += -Wa,-m405
130cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
131cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
132cpu-as-$(CONFIG_E500) += -Wa,-me500
133cpu-as-$(CONFIG_E200) += -Wa,-me200
134
Sam Ravnborg222d3942007-10-15 21:59:31 +0200135KBUILD_AFLAGS += $(cpu-as-y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200136KBUILD_CFLAGS += $(cpu-as-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000137
Stephen Rothwell2578bfa2007-09-21 10:16:20 +1000138head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000139head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
Josh Boyer15f65272007-08-20 07:27:07 -0500140head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000141head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
142head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
143
Paul Mackerras9994a332005-10-10 22:36:14 +1000144head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000145head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000146
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000147core-y += arch/powerpc/kernel/ \
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000148 arch/powerpc/mm/ \
149 arch/powerpc/lib/ \
150 arch/powerpc/sysdev/ \
151 arch/powerpc/platforms/
Kumar Gala5cd27202006-03-27 23:43:27 -0600152core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000153core-$(CONFIG_XMON) += arch/powerpc/xmon/
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500154core-$(CONFIG_KVM) += arch/powerpc/kvm/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000155
156drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
157
Tom Rini135f0b12006-01-12 16:55:58 -0700158# Default to zImage, override when needed
Grant Likely25431332008-02-07 05:18:34 +1100159all: zImage
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000160
161CPPFLAGS_vmlinux.lds := -Upowerpc
162
Grant Likely8d6bcd62008-05-24 16:11:51 +1000163BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.%
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000164
Paul Smith4f193362006-03-05 17:14:10 -0500165PHONY += $(BOOT_TARGETS)
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000166
Paul Mackerras94b212c2005-11-16 13:38:21 +1100167boot := arch/$(ARCH)/boot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000168
169$(BOOT_TARGETS): vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000170 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000171
Grant Likelye04018e2008-03-25 09:52:46 +1100172bootwrapper_install %.dtb:
David Woodhouse773f76b2007-12-03 13:56:58 +1100173 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
174
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000175define archhelp
Grant Likely70bf0332008-06-25 13:14:36 -0700176 @echo '* zImage - Build default images selected by kernel config'
177 @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
178 @echo ' uImage - U-Boot native image format'
179 @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
180 @echo ' versions which do not support device trees'
181 @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
182 @echo ' simpleImage.<dt> - Firmware independent image.'
183 @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000184 @echo ' install - Install kernel using'
185 @echo ' (your) ~/bin/installkernel or'
186 @echo ' (distribution) /sbin/installkernel or'
187 @echo ' install to $$(INSTALL_PATH) and run lilo'
Paul Mackerras437a58d2005-11-18 15:43:34 +1100188 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
Grant Likely70bf0332008-06-25 13:14:36 -0700189 @echo ''
190 @echo ' Targets with <dt> embed a device tree blob inside the image'
191 @echo ' These targets support board with firmware that does not'
192 @echo ' support passing a device tree directly. Replace <dt> with the'
193 @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
194 @echo ' (minus the .dts extension).'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000195endef
196
Sam Ravnborg3f85d632008-02-16 12:36:10 +0100197install:
Grant Likely25431332008-02-07 05:18:34 +1100198 $(Q)$(MAKE) $(build)=$(boot) install
Akinobu Mita928370c2007-04-10 21:05:31 +1000199
Roland McGrath8150caa2007-10-02 13:30:04 -0700200vdso_install:
201ifeq ($(CONFIG_PPC64),y)
202 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
203endif
204 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
205
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000206archclean:
Paul Mackerrasa3a9e992005-09-28 15:53:36 +1000207 $(Q)$(MAKE) $(clean)=$(boot)
Andreas Gruenbacher70567292006-02-10 01:51:07 -0800208
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000209archprepare: checkbin
210
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000211# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
212# to stdout and these checks are run even on install targets.
213TOUT := .tmp_gas_check
214# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
215# instructions.
216# gcc-3.4 and binutils-2.14 are a fatal combination.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000217
218checkbin:
Sam Ravnborgad143362006-01-08 19:58:51 +0100219 @if test "$(call cc-version)" = "0304" ; then \
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000220 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
221 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
222 echo 'correctly with gcc-3.4 and your version of binutils.'; \
223 echo '*** Please upgrade your binutils or downgrade your gcc'; \
224 false; \
225 fi ; \
226 fi
Segher Boessenkoolf5e83fa2007-05-19 18:49:08 +0200227 @if test "$(call cc-fullversion)" = "040200" \
228 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
229 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
230 echo 'kernel with modules enabled.' ; \
231 echo -n '*** Please use a different GCC version or ' ; \
232 echo 'disable kernel modules' ; \
233 false ; \
234 fi
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000235 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
236 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
237 echo 'correctly with old versions of binutils.' ; \
238 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
239 false ; \
240 fi
241
242CLEAN_FILES += $(TOUT)
243