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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
Paul Mackerras8a5abdf2005-11-18 16:39:08 +110038KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
39
Paul Mackerras94b212c2005-11-16 13:38:21 +110040ifeq ($(CONFIG_PPC64),y)
41OLDARCH := ppc64
42SZ := 64
43
Paul Mackerras14cf11a2005-09-26 16:04:21 +100044new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
45
46ifeq ($(new_nm),y)
47NM := $(NM) --synthetic
48endif
49
50else
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100051OLDARCH := ppc
Paul Mackerras14cf11a2005-09-26 16:04:21 +100052SZ := 32
53endif
54
Stephen Rothwell190554d2005-10-13 16:14:15 +100055UTS_MACHINE := $(OLDARCH)
56
Paul Mackerras14cf11a2005-09-26 16:04:21 +100057ifeq ($(HAS_BIARCH),y)
58override AS += -a$(SZ)
59override LD += -m elf$(SZ)ppc
60override CC += -m$(SZ)
Segher Boessenkool8995ac82007-05-16 22:34:38 +100061override AR := GNUTARGET=elf$(SZ)-powerpc $(AR)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100062endif
63
Michael Ellermane19e4ab2005-11-03 16:03:06 +110064LDFLAGS_vmlinux := -Bstatic
Paul Mackerras14cf11a2005-09-26 16:04:21 +100065
66# The -Iarch/$(ARCH)/include is temporary while we are merging
Stephen Rothwell55bb2392005-11-22 12:05:26 +110067CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
68AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +100069CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
Stephen Rothwell55bb2392005-11-22 12:05:26 +110070CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
71CPPFLAGS += $(CPPFLAGS-y)
72AFLAGS += $(AFLAGS-y)
73CFLAGS += -msoft-float -pipe $(CFLAGS-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100074CPP = $(CC) -E $(CFLAGS)
75# Temporary hack until we have migrated to asm-powerpc
Stephen Rothwell55bb2392005-11-22 12:05:26 +110076LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include
77LINUXINCLUDE += $(LINUXINCLUDE-y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100078
79CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
80
81ifeq ($(CONFIG_PPC64),y)
Sam Ravnborgad143362006-01-08 19:58:51 +010082GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
Paul Mackerras14cf11a2005-09-26 16:04:21 +100083
84ifeq ($(CONFIG_POWER4_ONLY),y)
85ifeq ($(CONFIG_ALTIVEC),y)
86ifeq ($(GCC_BROKEN_VEC),y)
87 CFLAGS += $(call cc-option,-mcpu=970)
88else
89 CFLAGS += $(call cc-option,-mcpu=power4)
90endif
91else
92 CFLAGS += $(call cc-option,-mcpu=power4)
93endif
94else
95 CFLAGS += $(call cc-option,-mtune=power4)
96endif
97endif
98
Paul Mackerrasd3f67fb2005-10-29 15:31:17 +100099# No AltiVec instruction when building kernel
100CFLAGS += $(call cc-option,-mno-altivec)
101
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000102# Enable unit-at-a-time mode when possible. It shrinks the
103# kernel considerably.
104CFLAGS += $(call cc-option,-funit-at-a-time)
105
Benjamin Herrenschmidt57647a42007-03-22 17:23:44 +1100106# Never use string load/store instructions as they are
107# often slow when they are implemented at all
108CFLAGS += -mno-string
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000109
Olaf Heringf48b8292006-04-11 20:42:08 +0200110ifeq ($(CONFIG_6xx),y)
111CFLAGS += -mcpu=powerpc
112endif
113
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000114cpu-as-$(CONFIG_4xx) += -Wa,-m405
115cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
116cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
117cpu-as-$(CONFIG_E500) += -Wa,-me500
118cpu-as-$(CONFIG_E200) += -Wa,-me200
119
120AFLAGS += $(cpu-as-y)
121CFLAGS += $(cpu-as-y)
122
Paul Mackerras70d64ce2005-10-10 21:52:43 +1000123head-y := arch/powerpc/kernel/head_32.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000124head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
125head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
126head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
127head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
128head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
129
Paul Mackerras9994a332005-10-10 22:36:14 +1000130head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000131head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000132
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000133core-y += arch/powerpc/kernel/ \
Paul Mackerrasdaec9622005-10-10 22:25:26 +1000134 arch/powerpc/mm/ \
135 arch/powerpc/lib/ \
136 arch/powerpc/sysdev/ \
137 arch/powerpc/platforms/
Kumar Gala5cd27202006-03-27 23:43:27 -0600138core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
Paul Mackerrasf78541d2005-10-28 22:53:37 +1000139core-$(CONFIG_XMON) += arch/powerpc/xmon/
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000140
141drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
142
Tom Rini135f0b12006-01-12 16:55:58 -0700143# Default to zImage, override when needed
144defaultimage-y := zImage
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600145defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000146KBUILD_IMAGE := $(defaultimage-y)
147all: $(KBUILD_IMAGE)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000148
149CPPFLAGS_vmlinux.lds := -Upowerpc
150
Mark A. Greer941b7ad2007-06-01 05:54:39 +1000151BOOT_TARGETS = zImage zImage.initrd uImage
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000152
Paul Smith4f193362006-03-05 17:14:10 -0500153PHONY += $(BOOT_TARGETS)
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000154
Paul Mackerras94b212c2005-11-16 13:38:21 +1100155boot := arch/$(ARCH)/boot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000156
157$(BOOT_TARGETS): vmlinux
Paul Mackerras20f62952005-10-11 09:25:40 +1000158 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000159
160define archhelp
Paul Mackerras94b212c2005-11-16 13:38:21 +1100161 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000162 @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'
Paul Mackerras437a58d2005-11-18 15:43:34 +1100166 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167endef
168
Akinobu Mita928370c2007-04-10 21:05:31 +1000169install:
170 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
171
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000172archclean:
Paul Mackerrasa3a9e992005-09-28 15:53:36 +1000173 $(Q)$(MAKE) $(clean)=$(boot)
Andreas Gruenbacher70567292006-02-10 01:51:07 -0800174
175archmrproper:
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000176 $(Q)rm -rf arch/$(ARCH)/include
177
178archprepare: checkbin
179
Stephen Rothwell55bb2392005-11-22 12:05:26 +1100180ifeq ($(CONFIG_PPC32),y)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000181# Temporary hack until we have migrated to asm-powerpc
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000182include/asm: arch/$(ARCH)/include/asm
Benjamin Herrenschmidt50092b22005-11-14 11:02:20 +1100183arch/$(ARCH)/include/asm: FORCE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000184 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
Stephen Rothwellbbeb3f42005-09-27 13:51:59 +1000185 $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
Stephen Rothwell55bb2392005-11-22 12:05:26 +1100186endif
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000187
188# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
189# to stdout and these checks are run even on install targets.
190TOUT := .tmp_gas_check
191# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
192# instructions.
193# gcc-3.4 and binutils-2.14 are a fatal combination.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000194
195checkbin:
Sam Ravnborgad143362006-01-08 19:58:51 +0100196 @if test "$(call cc-version)" = "0304" ; then \
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000197 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
Segher Boessenkoolf5e83fa2007-05-19 18:49:08 +0200204 @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
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000212 @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
219CLEAN_FILES += $(TOUT)
220