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-yy
:= -Bstatic
67 LDFLAGS_vmlinux-
$(CONFIG_PPC64
)$(CONFIG_RELOCATABLE
) := -pie
68 LDFLAGS_vmlinux
:= $(LDFLAGS_vmlinux-yy
)
70 CFLAGS-
$(CONFIG_PPC64
) := -mminimal-toc
-mtraceback
=none
-mcall-aixdesc
71 CFLAGS-
$(CONFIG_PPC32
) := -ffixed-r2
-mmultiple
72 KBUILD_CPPFLAGS
+= -Iarch
/$(ARCH
)
73 KBUILD_AFLAGS
+= -Iarch
/$(ARCH
)
74 KBUILD_CFLAGS
+= -msoft-float
-pipe
-Iarch
/$(ARCH
) $(CFLAGS-y
)
75 CPP
= $(CC
) -E
$(KBUILD_CFLAGS
)
77 CHECKFLAGS
+= -m
$(CONFIG_WORD_SIZE
) -D__powerpc__
-D__powerpc
$(CONFIG_WORD_SIZE
)__
79 ifeq ($(CONFIG_PPC64
),y
)
80 GCC_BROKEN_VEC
:= $(call cc-ifversion
, -lt
, 0400, y
)
82 ifeq ($(CONFIG_POWER4_ONLY
),y
)
83 ifeq ($(CONFIG_ALTIVEC
),y
)
84 ifeq ($(GCC_BROKEN_VEC
),y
)
85 KBUILD_CFLAGS
+= $(call cc-option
,-mcpu
=970)
87 KBUILD_CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
90 KBUILD_CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
93 KBUILD_CFLAGS
+= $(call cc-option
,-mtune
=power4
)
96 LDFLAGS_MODULE
+= arch
/powerpc
/lib
/crtsavres.o
99 ifeq ($(CONFIG_TUNE_CELL
),y
)
100 KBUILD_CFLAGS
+= $(call cc-option
,-mtune
=cell
)
103 # No AltiVec instruction when building kernel
104 KBUILD_CFLAGS
+= $(call cc-option
,-mno-altivec
)
106 # No SPE instruction when building kernel
107 # (We use all available options to help semi-broken compilers)
108 KBUILD_CFLAGS
+= $(call cc-option
,-mno-spe
)
109 KBUILD_CFLAGS
+= $(call cc-option
,-mspe
=no
)
111 # Enable unit-at-a-time mode when possible. It shrinks the
112 # kernel considerably.
113 KBUILD_CFLAGS
+= $(call cc-option
,-funit-at-a-time
)
115 # Never use string load/store instructions as they are
116 # often slow when they are implemented at all
117 KBUILD_CFLAGS
+= -mno-string
119 ifeq ($(CONFIG_6xx
),y
)
120 KBUILD_CFLAGS
+= -mcpu
=powerpc
123 # Work around a gcc code-gen bug with -fno-omit-frame-pointer.
124 ifeq ($(CONFIG_FUNCTION_TRACER
),y
)
125 KBUILD_CFLAGS
+= -mno-sched-epilog
128 cpu-as-
$(CONFIG_4xx
) += -Wa
,-m405
129 cpu-as-
$(CONFIG_6xx
) += -Wa
,-maltivec
130 cpu-as-
$(CONFIG_POWER4
) += -Wa
,-maltivec
131 cpu-as-
$(CONFIG_E500
) += -Wa
,-me500
132 cpu-as-
$(CONFIG_E200
) += -Wa
,-me200
134 KBUILD_AFLAGS
+= $(cpu-as-y
)
135 KBUILD_CFLAGS
+= $(cpu-as-y
)
137 head-y
:= arch
/powerpc
/kernel
/head_
$(CONFIG_WORD_SIZE
).o
138 head-
$(CONFIG_8xx
) := arch
/powerpc
/kernel
/head_8xx.o
139 head-
$(CONFIG_40x
) := arch
/powerpc
/kernel
/head_40x.o
140 head-
$(CONFIG_44x
) := arch
/powerpc
/kernel
/head_44x.o
141 head-
$(CONFIG_FSL_BOOKE
) := arch
/powerpc
/kernel
/head_fsl_booke.o
143 head-
$(CONFIG_PPC64
) += arch
/powerpc
/kernel
/entry_64.o
144 head-
$(CONFIG_PPC_FPU
) += arch
/powerpc
/kernel
/fpu.o
145 head-
$(CONFIG_ALTIVEC
) += arch
/powerpc
/kernel
/vector.o
147 core-y
+= arch
/powerpc
/kernel
/ \
150 arch
/powerpc
/sysdev
/ \
151 arch
/powerpc
/platforms
/ \
152 arch
/powerpc
/math-emu
/
153 core-
$(CONFIG_XMON
) += arch
/powerpc
/xmon
/
154 core-
$(CONFIG_KVM
) += arch
/powerpc
/kvm
/
156 drivers-
$(CONFIG_OPROFILE
) += arch
/powerpc
/oprofile
/
158 # Default to zImage, override when needed
161 CPPFLAGS_vmlinux.lds
:= -Upowerpc
163 BOOT_TARGETS
= zImage zImage.initrd uImage zImage
% dtbImage
% treeImage.
% cuImage.
% simpleImage.
%
165 PHONY
+= $(BOOT_TARGETS
)
167 boot
:= arch
/$(ARCH
)/boot
169 $(BOOT_TARGETS
): vmlinux
170 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
172 bootwrapper_install
%.dtb
:
173 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
176 @echo
'* zImage - Build default images selected by kernel config'
177 @echo
' zImage.* - Compressed kernel image (arch/$(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)'
184 @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'
188 @echo
' *_defconfig - Select default config from arch/$(ARCH)/configs'
190 @echo
' Targets with <dt> embed a device tree blob inside the image'
191 @echo
' These targets support board with firmware that does not'
192 @echo
' support passing a device tree directly. Replace <dt> with the'
193 @echo
' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
194 @echo
' (minus the .dts extension).'
198 $(Q
)$(MAKE
) $(build
)=$(boot
) install
201 ifeq ($(CONFIG_PPC64
),y
)
202 $(Q
)$(MAKE
) $(build
)=arch
/$(ARCH
)/kernel
/vdso64
$@
204 $(Q
)$(MAKE
) $(build
)=arch
/$(ARCH
)/kernel
/vdso32
$@
207 $(Q
)$(MAKE
) $(clean)=$(boot
)
209 archprepare
: checkbin
211 # 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.
213 TOUT
:= .tmp_gas_check
214 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
216 # gcc-3.4 and binutils-2.14 are a fatal combination.
219 @if
test "$(call cc-version)" = "0304" ; then \
220 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'; \
227 @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' ; \
235 @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' ; \
242 CLEAN_FILES
+= $(TOUT
)