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
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
10 # Copyright (C) 1994 by Linus Torvalds
11 # Changes for PPC by Gary Thomas
12 # Rewritten by Cort Dougan and Paul Mackerras
15 HAS_BIARCH := $(call cc-option-yn, -m32)
17 # Set default 32 bits cross compilers for vdso and boot wrapper
20 CROSS32CC := $(CROSS32_COMPILE)gcc
21 CROSS32AR := $(CROSS32_COMPILE)ar
23 ifeq ($(HAS_BIARCH),y)
24 ifeq ($(CROSS32_COMPILE),)
25 CROSS32CC := $(CC) -m32
26 CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
30 export CROSS32CC CROSS32AR
32 ifeq ($(CROSS_COMPILE),)
33 KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
35 KBUILD_DEFCONFIG := ppc64_defconfig
38 ifeq ($(CONFIG_PPC64),y)
41 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
44 NM := $(NM) --synthetic
51 # It seems there are times we use this Makefile without
52 # including the config file, but this replicates the old behaviour
53 ifeq ($(CONFIG_WORD_SIZE),)
54 CONFIG_WORD_SIZE := 32
57 UTS_MACHINE := $(OLDARCH)
59 ifeq ($(HAS_BIARCH),y)
60 override AS += -a$(CONFIG_WORD_SIZE)
61 override LD += -m elf$(CONFIG_WORD_SIZE)ppc
62 override CC += -m$(CONFIG_WORD_SIZE)
63 override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
66 LDFLAGS_vmlinux := -Bstatic
68 CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
69 CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple
70 KBUILD_CPPFLAGS += -Iarch/$(ARCH)
71 KBUILD_AFLAGS += -Iarch/$(ARCH)
72 KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
73 CPP = $(CC) -E $(KBUILD_CFLAGS)
75 CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
77 ifeq ($(CONFIG_PPC64),y)
78 GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
80 ifeq ($(CONFIG_POWER4_ONLY),y)
81 ifeq ($(CONFIG_ALTIVEC),y)
82 ifeq ($(GCC_BROKEN_VEC),y)
83 KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
85 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
88 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
91 KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
94 LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
97 ifeq ($(CONFIG_TUNE_CELL),y)
98 KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
101 # No AltiVec instruction when building kernel
102 KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
104 # No SPE instruction when building kernel
105 KBUILD_CFLAGS += $(call cc-option,-mno-spe)
107 # Enable unit-at-a-time mode when possible. It shrinks the
108 # kernel considerably.
109 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
111 # Never use string load/store instructions as they are
112 # often slow when they are implemented at all
113 KBUILD_CFLAGS += -mno-string
115 ifeq ($(CONFIG_6xx),y)
116 KBUILD_CFLAGS += -mcpu=powerpc
119 cpu-as-$(CONFIG_4xx) += -Wa,-m405
120 cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
121 cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
122 cpu-as-$(CONFIG_E500) += -Wa,-me500
123 cpu-as-$(CONFIG_E200) += -Wa,-me200
125 KBUILD_AFLAGS += $(cpu-as-y)
126 KBUILD_CFLAGS += $(cpu-as-y)
128 head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
129 head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
130 head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
131 head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
132 head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
134 head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
135 head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
137 core-y += arch/powerpc/kernel/ \
140 arch/powerpc/sysdev/ \
141 arch/powerpc/platforms/
142 core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
143 core-$(CONFIG_XMON) += arch/powerpc/xmon/
144 core-$(CONFIG_KVM) += arch/powerpc/kvm/
146 drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
148 # Default to zImage, override when needed
151 CPPFLAGS_vmlinux.lds := -Upowerpc
153 BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.%
155 PHONY += $(BOOT_TARGETS)
157 boot := arch/$(ARCH)/boot
159 $(BOOT_TARGETS): vmlinux
160 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
162 bootwrapper_install %.dtb:
163 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
166 @echo '* zImage - Build default images selected by kernel config'
167 @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
168 @echo ' uImage - U-Boot native image format'
169 @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
170 @echo ' versions which do not support device trees'
171 @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
172 @echo ' simpleImage.<dt> - Firmware independent image.'
173 @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
174 @echo ' install - Install kernel using'
175 @echo ' (your) ~/bin/installkernel or'
176 @echo ' (distribution) /sbin/installkernel or'
177 @echo ' install to $$(INSTALL_PATH) and run lilo'
178 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
180 @echo ' Targets with <dt> embed a device tree blob inside the image'
181 @echo ' These targets support board with firmware that does not'
182 @echo ' support passing a device tree directly. Replace <dt> with the'
183 @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
184 @echo ' (minus the .dts extension).'
188 $(Q)$(MAKE) $(build)=$(boot) install
191 ifeq ($(CONFIG_PPC64),y)
192 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
194 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
197 $(Q)$(MAKE) $(clean)=$(boot)
199 archprepare: checkbin
201 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
202 # to stdout and these checks are run even on install targets.
203 TOUT := .tmp_gas_check
204 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
206 # gcc-3.4 and binutils-2.14 are a fatal combination.
209 @if test "$(call cc-version)" = "0304" ; then \
210 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
211 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
212 echo 'correctly with gcc-3.4 and your version of binutils.'; \
213 echo '*** Please upgrade your binutils or downgrade your gcc'; \
217 @if test "$(call cc-fullversion)" = "040200" \
218 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
219 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
220 echo 'kernel with modules enabled.' ; \
221 echo -n '*** Please use a different GCC version or ' ; \
222 echo 'disable kernel modules' ; \
225 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
226 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
227 echo 'correctly with old versions of binutils.' ; \
228 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
232 CLEAN_FILES += $(TOUT)