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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 $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100064endif
65
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +000066LDFLAGS_vmlinux-y := -Bstatic
67LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
68LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100069
Anton Blanchard1fbe9cf2012-11-26 17:41:08 +000070ifeq ($(CONFIG_PPC64),y)
71ifeq ($(call cc-option-yn,-mcmodel=medium),y)
72 # -mcmodel=medium breaks modules because it uses 32bit offsets from
73 # the TOC pointer to create pointers where possible. Pointers into the
74 # percpu data area are created by this method.
75 #
76 # The kernel module loader relocates the percpu data section from the
77 # original location (starting with 0xd...) to somewhere in the base
78 # kernel percpu data space (starting with 0xc...). We need a full
79 # 64bit relocation for this to work, hence -mcmodel=large.
80 KBUILD_CFLAGS_MODULE += -mcmodel=large
81else
82 export NO_MINIMAL_TOC := -mno-minimal-toc
83endif
84endif
85
86CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc
87CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc)
Anton Blanchard98679fb2012-12-12 14:43:12 +000088CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
Kumar Gala1993cbf2008-04-16 05:52:20 +100089CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
Anton Blanchardd23c6fb2012-04-17 18:45:28 +000090
91CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
92CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
93CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
94CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
95CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
96CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
97
98CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
99
Kumar Gala1993cbf2008-04-16 05:52:20 +1000100KBUILD_CPPFLAGS += -Iarch/$(ARCH)
101KBUILD_AFLAGS += -Iarch/$(ARCH)
102KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200103CPP = $(CC) -E $(KBUILD_CFLAGS)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000104
Stephen Rothwell2578bfa2007-09-21 10:16:20 +1000105CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000106
Michal Marek772320e2010-08-04 13:59:13 +0200107KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
Stephen Rothwell7fca5dc2010-06-29 20:08:42 +0000108
Anton Blanchardd23c6fb2012-04-17 18:45:28 +0000109# No AltiVec or VSX instructions when building kernel
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200110KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
Anton Blanchardd23c6fb2012-04-17 18:45:28 +0000111KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +1000112
Kumar Gala0197cd22007-10-18 16:53:19 -0500113# No SPE instruction when building kernel
Thiemo Seuferce400c02008-09-02 00:23:02 +1000114# (We use all available options to help semi-broken compilers)
Kumar Gala0197cd22007-10-18 16:53:19 -0500115KBUILD_CFLAGS += $(call cc-option,-mno-spe)
Thiemo Seuferce400c02008-09-02 00:23:02 +1000116KBUILD_CFLAGS += $(call cc-option,-mspe=no)
Kumar Gala0197cd22007-10-18 16:53:19 -0500117
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000118# Enable unit-at-a-time mode when possible. It shrinks the
119# kernel considerably.
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200120KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000121
Andi Kleend0679c72010-02-02 14:40:02 -0800122# 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
125KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
126
Benjamin Herrenschmidt57647a42007-03-22 17:23:44 +1100127# Never use string load/store instructions as they are
128# often slow when they are implemented at all
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200129KBUILD_CFLAGS += -mno-string
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000130
Olaf Heringf48b8292006-04-11 20:42:08 +0200131ifeq ($(CONFIG_6xx),y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200132KBUILD_CFLAGS += -mcpu=powerpc
Olaf Heringf48b8292006-04-11 20:42:08 +0200133endif
134
Tony Breeds7563dc62008-09-02 16:50:38 +1000135# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
Steven Rostedt606576c2008-10-06 19:06:12 -0400136ifeq ($(CONFIG_FUNCTION_TRACER),y)
Tony Breeds7563dc62008-09-02 16:50:38 +1000137KBUILD_CFLAGS += -mno-sched-epilog
138endif
139
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000140cpu-as-$(CONFIG_4xx) += -Wa,-m405
Matthew McClintocke1fc2352010-09-07 08:56:55 +0000141cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000142cpu-as-$(CONFIG_E500) += -Wa,-me500
143cpu-as-$(CONFIG_E200) += -Wa,-me200
144
Sam Ravnborg222d3942007-10-15 21:59:31 +0200145KBUILD_AFLAGS += $(cpu-as-y)
Sam Ravnborga0f97e02007-10-14 22:21:35 +0200146KBUILD_CFLAGS += $(cpu-as-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000147
Stephen Rothwell2578bfa2007-09-21 10:16:20 +1000148head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000149head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
Josh Boyer15f65272007-08-20 07:27:07 -0500150head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000151head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
152head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
153
Paul Mackerras9994a332005-10-10 22:36:14 +1000154head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000155head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
Benjamin Herrenschmidte821ea72009-06-02 21:17:37 +0000156head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
Anton Blanchard5ac47f72012-11-26 17:39:03 +0000157head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000158
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000159core-y += arch/powerpc/kernel/ \
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000160 arch/powerpc/mm/ \
161 arch/powerpc/lib/ \
162 arch/powerpc/sysdev/ \
Liu Yu1a3d1fc2009-03-10 11:09:49 +0800163 arch/powerpc/platforms/ \
Matt Evans0ca87f02011-07-20 15:51:00 +0000164 arch/powerpc/math-emu/ \
Michael Ellerman323a6bf2012-09-13 23:00:49 +0000165 arch/powerpc/crypto/ \
Matt Evans0ca87f02011-07-20 15:51:00 +0000166 arch/powerpc/net/
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000167core-$(CONFIG_XMON) += arch/powerpc/xmon/
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500168core-$(CONFIG_KVM) += arch/powerpc/kvm/
Michael Ellermanf2699492012-02-20 17:02:09 +0000169core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000170
171drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
172
Tom Rini135f0b12006-01-12 16:55:58 -0700173# Default to zImage, override when needed
Grant Likely25431332008-02-07 05:18:34 +1100174all: zImage
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000175
Sam Ravnborge32e78c2010-08-02 20:47:48 +0000176# With make 3.82 we cannot mix normal and wildcard targets
Anatolij Gustschinc686ecf2010-08-15 22:26:56 +0000177BOOT_TARGETS1 := zImage zImage.initrd uImage
Benjamin Herrenschmidt11eab2972011-12-01 19:35:08 +0000178BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000179
Sam Ravnborge32e78c2010-08-02 20:47:48 +0000180PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000181
Paul Mackerras94b212c2005-11-16 13:38:21 +1100182boot := arch/$(ARCH)/boot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000183
Tony Breeds144ef902009-09-14 19:57:02 +0000184ifeq ($(CONFIG_RELOCATABLE),y)
185quiet_cmd_relocs_check = CALL $<
186 cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux"
187
188PHONY += relocs_check
189relocs_check: arch/powerpc/relocs_check.pl vmlinux
190 $(call cmd,relocs_check)
191
192zImage: relocs_check
193endif
194
Sam Ravnborge32e78c2010-08-02 20:47:48 +0000195$(BOOT_TARGETS1): vmlinux
196 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
197$(BOOT_TARGETS2): vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000198 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000199
Sam Ravnborge32e78c2010-08-02 20:47:48 +0000200
201bootwrapper_install:
202 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
203
Matthew McClintock8662d0b2012-09-18 09:50:55 +0000204%.dtb: scripts
David Woodhouse773f76b2007-12-03 13:56:58 +1100205 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
206
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000207define archhelp
Grant Likely70bf0332008-06-25 13:14:36 -0700208 @echo '* zImage - Build default images selected by kernel config'
209 @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
210 @echo ' uImage - U-Boot native image format'
211 @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
212 @echo ' versions which do not support device trees'
213 @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
214 @echo ' simpleImage.<dt> - Firmware independent image.'
215 @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000216 @echo ' install - Install kernel using'
Sam Ravnborgcaa27b62009-07-20 21:37:11 +0200217 @echo ' (your) ~/bin/$(INSTALLKERNEL) or'
218 @echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000219 @echo ' install to $$(INSTALL_PATH) and run lilo'
Paul Mackerras437a58d2005-11-18 15:43:34 +1100220 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
Grant Likely70bf0332008-06-25 13:14:36 -0700221 @echo ''
222 @echo ' Targets with <dt> embed a device tree blob inside the image'
223 @echo ' These targets support board with firmware that does not'
224 @echo ' support passing a device tree directly. Replace <dt> with the'
225 @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
226 @echo ' (minus the .dts extension).'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000227endef
228
Sam Ravnborg3f85d632008-02-16 12:36:10 +0100229install:
Grant Likely25431332008-02-07 05:18:34 +1100230 $(Q)$(MAKE) $(build)=$(boot) install
Akinobu Mita928370c2007-04-10 21:05:31 +1000231
Roland McGrath8150caa2007-10-02 13:30:04 -0700232vdso_install:
233ifeq ($(CONFIG_PPC64),y)
234 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
235endif
236 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
237
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000238archclean:
Paul Mackerrasa3a9e992005-09-28 15:53:36 +1000239 $(Q)$(MAKE) $(clean)=$(boot)
Andreas Gruenbacher70567292006-02-10 01:51:07 -0800240
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000241archprepare: checkbin
242
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000243# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
244# to stdout and these checks are run even on install targets.
245TOUT := .tmp_gas_check
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000246
Anton Blanchard82a85082012-04-17 18:42:54 +0000247# Check gcc and binutils versions:
248# - gcc-3.4 and binutils-2.14 are a fatal combination
249# - Require gcc 4.0 or above on 64-bit
250# - gcc-4.2.0 has issues compiling modules on 64-bit
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000251checkbin:
Sam Ravnborgad143362006-01-08 19:58:51 +0100252 @if test "$(call cc-version)" = "0304" ; then \
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000253 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
254 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
255 echo 'correctly with gcc-3.4 and your version of binutils.'; \
256 echo '*** Please upgrade your binutils or downgrade your gcc'; \
257 false; \
258 fi ; \
259 fi
Anton Blanchard82a85082012-04-17 18:42:54 +0000260 @if test "$(call cc-version)" -lt "0400" \
261 && test "x${CONFIG_PPC64}" = "xy" ; then \
262 echo -n "Sorry, GCC v4.0 or above is required to build " ; \
263 echo "the 64-bit powerpc kernel." ; \
264 false ; \
265 fi
Segher Boessenkoolf5e83fa2007-05-19 18:49:08 +0200266 @if test "$(call cc-fullversion)" = "040200" \
267 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
268 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
269 echo 'kernel with modules enabled.' ; \
270 echo -n '*** Please use a different GCC version or ' ; \
271 echo 'disable kernel modules' ; \
272 false ; \
273 fi
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000274
275CLEAN_FILES += $(TOUT)
276