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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
21CROSS32AS := $(CROSS32_COMPILE)as
22CROSS32LD := $(CROSS32_COMPILE)ld
Paul Mackerras2bf11812006-09-27 22:47:03 +100023CROSS32AR := $(CROSS32_COMPILE)ar
Paul Mackerras14cf11a2005-09-26 16:04:21 +100024CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
25
26ifeq ($(HAS_BIARCH),y)
27ifeq ($(CROSS32_COMPILE),)
28CROSS32CC := $(CC) -m32
29CROSS32AS := $(AS) -a32
30CROSS32LD := $(LD) -m elf32ppc
31CROSS32OBJCOPY := $(OBJCOPY)
Segher Boessenkool8995ac82007-05-16 22:34:38 +100032CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100033endif
34endif
35
Paul Mackerras2bf11812006-09-27 22:47:03 +100036export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
Paul Mackerras14cf11a2005-09-26 16:04:21 +100037
Adrian Bunkca786f82007-10-02 13:30:09 -070038ifeq ($(CROSS_COMPILE),)
Paul Mackerras8a5abdf2005-11-18 16:39:08 +110039KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
Adrian Bunkca786f82007-10-02 13:30:09 -070040else
41KBUILD_DEFCONFIG := ppc64_defconfig
42endif
Paul Mackerras8a5abdf2005-11-18 16:39:08 +110043
Paul Mackerras94b212c2005-11-16 13:38:21 +110044ifeq ($(CONFIG_PPC64),y)
45OLDARCH := ppc64
Paul Mackerras94b212c2005-11-16 13:38:21 +110046
Paul Mackerras14cf11a2005-09-26 16:04:21 +100047new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
48
49ifeq ($(new_nm),y)
50NM := $(NM) --synthetic
51endif
52
53else
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100054OLDARCH := ppc
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100055endif
56
57# It seems there are times we use this Makefile without
58# including the config file, but this replicates the old behaviour
59ifeq ($(CONFIG_WORD_SIZE),)
60CONFIG_WORD_SIZE := 32
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061endif
62
Stephen Rothwell190554d2005-10-13 16:14:15 +100063UTS_MACHINE := $(OLDARCH)
64
Paul Mackerras14cf11a2005-09-26 16:04:21 +100065ifeq ($(HAS_BIARCH),y)
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100066override AS += -a$(CONFIG_WORD_SIZE)
67override LD += -m elf$(CONFIG_WORD_SIZE)ppc
68override CC += -m$(CONFIG_WORD_SIZE)
69override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100070endif
71
Michael Ellermane19e4ab2005-11-03 16:03:06 +110072LDFLAGS_vmlinux := -Bstatic
Paul Mackerras14cf11a2005-09-26 16:04:21 +100073
Kumar Gala2f6c9d92007-08-17 01:52:39 -050074CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
Stephen Rothwell55bb2392005-11-22 12:05:26 +110075AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100076CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
Stephen Rothwell55bb2392005-11-22 12:05:26 +110077CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
78CPPFLAGS += $(CPPFLAGS-y)
79AFLAGS += $(AFLAGS-y)
80CFLAGS += -msoft-float -pipe $(CFLAGS-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100081CPP = $(CC) -E $(CFLAGS)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100082
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100083CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
Paul Mackerras14cf11a2005-09-26 16:04:21 +100084
85ifeq ($(CONFIG_PPC64),y)
Sam Ravnborgad143362006-01-08 19:58:51 +010086GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100087
88ifeq ($(CONFIG_POWER4_ONLY),y)
89ifeq ($(CONFIG_ALTIVEC),y)
90ifeq ($(GCC_BROKEN_VEC),y)
91 CFLAGS += $(call cc-option,-mcpu=970)
92else
93 CFLAGS += $(call cc-option,-mcpu=power4)
94endif
95else
96 CFLAGS += $(call cc-option,-mcpu=power4)
97endif
98else
99 CFLAGS += $(call cc-option,-mtune=power4)
100endif
101endif
102
Arnd Bergmann3164ccc2007-09-15 10:21:57 +1000103ifeq ($(CONFIG_TUNE_CELL),y)
104 CFLAGS += $(call cc-option,-mtune=cell)
105endif
106
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +1000107# No AltiVec instruction when building kernel
108CFLAGS += $(call cc-option,-mno-altivec)
109
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000110# Enable unit-at-a-time mode when possible. It shrinks the
111# kernel considerably.
112CFLAGS += $(call cc-option,-funit-at-a-time)
113
Benjamin Herrenschmidt57647a42007-03-22 17:23:44 +1100114# Never use string load/store instructions as they are
115# often slow when they are implemented at all
116CFLAGS += -mno-string
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000117
Olaf Heringf48b8292006-04-11 20:42:08 +0200118ifeq ($(CONFIG_6xx),y)
119CFLAGS += -mcpu=powerpc
120endif
121
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000122cpu-as-$(CONFIG_4xx) += -Wa,-m405
123cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
124cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
125cpu-as-$(CONFIG_E500) += -Wa,-me500
126cpu-as-$(CONFIG_E200) += -Wa,-me200
127
128AFLAGS += $(cpu-as-y)
129CFLAGS += $(cpu-as-y)
130
Stephen Rothwell2578bfa2007-09-21 10:16:20 +1000131head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000132head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
Josh Boyer15f65272007-08-20 07:27:07 -0500133head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000134head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
135head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
136
Paul Mackerras9994a332005-10-10 22:36:14 +1000137head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000138head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000139
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000140core-y += arch/powerpc/kernel/ \
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000141 arch/powerpc/mm/ \
142 arch/powerpc/lib/ \
143 arch/powerpc/sysdev/ \
144 arch/powerpc/platforms/
Kumar Gala5cd27202006-03-27 23:43:27 -0600145core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000146core-$(CONFIG_XMON) += arch/powerpc/xmon/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000147
148drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
149
Tom Rini135f0b12006-01-12 16:55:58 -0700150# Default to zImage, override when needed
151defaultimage-y := zImage
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600152defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000153KBUILD_IMAGE := $(defaultimage-y)
154all: $(KBUILD_IMAGE)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000155
156CPPFLAGS_vmlinux.lds := -Upowerpc
157
Mark A. Greer941b7ad2007-06-01 05:54:39 +1000158BOOT_TARGETS = zImage zImage.initrd uImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000159
Paul Smith4f193362006-03-05 17:14:10 -0500160PHONY += $(BOOT_TARGETS)
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000161
Paul Mackerras94b212c2005-11-16 13:38:21 +1100162boot := arch/$(ARCH)/boot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000163
164$(BOOT_TARGETS): vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000165 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000166
167define archhelp
Paul Mackerras94b212c2005-11-16 13:38:21 +1100168 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000169 @echo ' install - Install kernel using'
170 @echo ' (your) ~/bin/installkernel or'
171 @echo ' (distribution) /sbin/installkernel or'
172 @echo ' install to $$(INSTALL_PATH) and run lilo'
Paul Mackerras437a58d2005-11-18 15:43:34 +1100173 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000174endef
175
Roland McGrath8150caa2007-10-02 13:30:04 -0700176install: vdso_install
Akinobu Mita928370c2007-04-10 21:05:31 +1000177 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
178
Roland McGrath8150caa2007-10-02 13:30:04 -0700179vdso_install:
180ifeq ($(CONFIG_PPC64),y)
181 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
182endif
183 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
184
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000185archclean:
Paul Mackerrasa3a9e992005-09-28 15:53:36 +1000186 $(Q)$(MAKE) $(clean)=$(boot)
Andreas Gruenbacher70567292006-02-10 01:51:07 -0800187
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000188archprepare: checkbin
189
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000190# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
191# to stdout and these checks are run even on install targets.
192TOUT := .tmp_gas_check
193# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
194# instructions.
195# gcc-3.4 and binutils-2.14 are a fatal combination.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000196
197checkbin:
Sam Ravnborgad143362006-01-08 19:58:51 +0100198 @if test "$(call cc-version)" = "0304" ; then \
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000199 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
200 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
201 echo 'correctly with gcc-3.4 and your version of binutils.'; \
202 echo '*** Please upgrade your binutils or downgrade your gcc'; \
203 false; \
204 fi ; \
205 fi
Segher Boessenkoolf5e83fa2007-05-19 18:49:08 +0200206 @if test "$(call cc-fullversion)" = "040200" \
207 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
208 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
209 echo 'kernel with modules enabled.' ; \
210 echo -n '*** Please use a different GCC version or ' ; \
211 echo 'disable kernel modules' ; \
212 false ; \
213 fi
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000214 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
215 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
216 echo 'correctly with old versions of binutils.' ; \
217 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
218 false ; \
219 fi
220
221CLEAN_FILES += $(TOUT)
222