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
:= $(call cc-option-yn
, -m32
)
17 ifeq ($(CONFIG_PPC64
),y
)
21 # Set default 32 bits cross compilers for vdso and boot wrapper
24 CROSS32CC
:= $(CROSS32_COMPILE
)gcc
25 CROSS32AS
:= $(CROSS32_COMPILE
)as
26 CROSS32LD
:= $(CROSS32_COMPILE
)ld
27 CROSS32OBJCOPY
:= $(CROSS32_COMPILE
)objcopy
29 ifeq ($(HAS_BIARCH
),y
)
30 ifeq ($(CROSS32_COMPILE
),)
31 CROSS32CC
:= $(CC
) -m32
32 CROSS32AS
:= $(AS
) -a32
33 CROSS32LD
:= $(LD
) -m elf32ppc
34 CROSS32OBJCOPY
:= $(OBJCOPY
)
38 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
40 new_nm
:= $(shell if
$(NM
) --help
2>&1 | grep
-- '--synthetic' > /dev
/null
; then echo y
; else echo n
; fi
)
43 NM
:= $(NM
) --synthetic
51 UTS_MACHINE
:= $(OLDARCH
)
53 ifeq ($(HAS_BIARCH
),y
)
54 override AS
+= -a
$(SZ
)
55 override LD
+= -m elf
$(SZ
)ppc
56 override CC
+= -m
$(SZ
)
59 LDFLAGS_vmlinux
:= -Bstatic
61 # The -Iarch/$(ARCH)/include is temporary while we are merging
62 CPPFLAGS
+= -Iarch
/$(ARCH
) -Iarch
/$(ARCH
)/include
63 AFLAGS
+= -Iarch
/$(ARCH
)
64 CFLAGS
+= -Iarch
/$(ARCH
) -msoft-float
-pipe
65 CFLAGS-
$(CONFIG_PPC64
) := -mminimal-toc
-mtraceback
=none
-mcall-aixdesc
66 CFLAGS-
$(CONFIG_PPC32
) := -ffixed-r2
-mmultiple
68 CPP
= $(CC
) -E
$(CFLAGS
)
69 # Temporary hack until we have migrated to asm-powerpc
70 LINUXINCLUDE
+= -Iarch
/$(ARCH
)/include
72 CHECKFLAGS
+= -m
$(SZ
) -D__powerpc__
-D__powerpc
$(SZ
)__
74 ifeq ($(CONFIG_PPC64
),y
)
75 GCC_VERSION
:= $(call cc-version
)
76 GCC_BROKEN_VEC
:= $(shell if
[ $(GCC_VERSION
) -lt
0400 ] ; then echo
"y"; fi
)
78 ifeq ($(CONFIG_POWER4_ONLY
),y
)
79 ifeq ($(CONFIG_ALTIVEC
),y
)
80 ifeq ($(GCC_BROKEN_VEC
),y
)
81 CFLAGS
+= $(call cc-option
,-mcpu
=970)
83 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
86 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
89 CFLAGS
+= $(call cc-option
,-mtune
=power4
)
93 # No AltiVec instruction when building kernel
94 CFLAGS
+= $(call cc-option
,-mno-altivec
)
96 # Enable unit-at-a-time mode when possible. It shrinks the
97 # kernel considerably.
98 CFLAGS
+= $(call cc-option
,-funit-at-a-time
)
100 ifndef CONFIG_FSL_BOOKE
104 cpu-as-
$(CONFIG_PPC64BRIDGE
) += -Wa
,-mppc64bridge
105 cpu-as-
$(CONFIG_4xx
) += -Wa
,-m405
106 cpu-as-
$(CONFIG_6xx
) += -Wa
,-maltivec
107 cpu-as-
$(CONFIG_POWER4
) += -Wa
,-maltivec
108 cpu-as-
$(CONFIG_E500
) += -Wa
,-me500
109 cpu-as-
$(CONFIG_E200
) += -Wa
,-me200
111 AFLAGS
+= $(cpu-as-y
)
112 CFLAGS
+= $(cpu-as-y
)
114 # Default to the common case.
115 KBUILD_DEFCONFIG
:= common_defconfig
117 head-y
:= arch
/powerpc
/kernel
/head_32.o
118 head-
$(CONFIG_PPC64
) := arch
/powerpc
/kernel
/head_64.o
119 head-
$(CONFIG_8xx
) := arch
/powerpc
/kernel
/head_8xx.o
120 head-
$(CONFIG_4xx
) := arch
/powerpc
/kernel
/head_4xx.o
121 head-
$(CONFIG_44x
) := arch
/powerpc
/kernel
/head_44x.o
122 head-
$(CONFIG_FSL_BOOKE
) := arch
/powerpc
/kernel
/head_fsl_booke.o
124 head-
$(CONFIG_PPC64
) += arch
/powerpc
/kernel
/entry_64.o
125 head-
$(CONFIG_PPC_FPU
) += arch
/powerpc
/kernel
/fpu.o
127 core-y
+= arch
/powerpc
/kernel
/ \
128 arch
/$(OLDARCH
)/kernel
/ \
131 arch
/powerpc
/sysdev
/ \
132 arch
/powerpc
/platforms
/
133 core-
$(CONFIG_MATH_EMULATION
) += arch
/ppc
/math-emu
/
134 core-
$(CONFIG_XMON
) += arch
/powerpc
/xmon
/
135 core-
$(CONFIG_APUS
) += arch
/ppc
/amiga
/
136 drivers-
$(CONFIG_8xx
) += arch
/ppc
/8xx_io
/
137 drivers-
$(CONFIG_4xx
) += arch
/ppc
/4xx_io
/
138 drivers-
$(CONFIG_CPM2
) += arch
/ppc
/8260_io
/
140 drivers-
$(CONFIG_OPROFILE
) += arch
/powerpc
/oprofile
/
142 defaultimage-
$(CONFIG_PPC32
) := uImage zImage
143 defaultimage-
$(CONFIG_PPC_ISERIES
) := vmlinux
144 defaultimage-
$(CONFIG_PPC_PSERIES
) := zImage
145 KBUILD_IMAGE
:= $(defaultimage-y
)
148 CPPFLAGS_vmlinux.lds
:= -Upowerpc
150 # All the instructions talk about "make bzImage".
153 BOOT_TARGETS
= zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
155 .PHONY
: $(BOOT_TARGETS
)
157 boot
:= arch
/$(OLDARCH
)/boot
160 ifeq ($(CONFIG_PPC64
),y
)
161 $(BOOT_TARGETS
): vmlinux
162 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
164 $(BOOT_TARGETS
): vmlinux
165 $(Q
)$(MAKE
) ARCH
=ppc
$(build
)=$(boot
) $@
169 $(Q
)$(MAKE
) ARCH
=$(OLDARCH
) $(build
)=$(boot
)/images
$(boot
)/images
/$@
172 @echo
'* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
173 @echo
' uImage - Create a bootable image for U-Boot / PPCBoot'
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)/ppc/configs'
182 $(Q
)$(MAKE
) $(clean)=$(boot
)
183 # Temporary hack until we have migrated to asm-powerpc
184 $(Q
)rm -rf arch
/$(ARCH
)/include
186 archprepare
: checkbin
188 # Temporary hack until we have migrated to asm-powerpc
189 include/asm
: arch
/$(ARCH
)/include/asm
190 arch
/$(ARCH
)/include/asm
:
191 $(Q
)if
[ ! -d arch
/$(ARCH
)/include ]; then mkdir
-p arch
/$(ARCH
)/include; fi
192 $(Q
)ln
-fsn
$(srctree
)/include/asm-
$(OLDARCH
) arch
/$(ARCH
)/include/asm
194 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
195 # to stdout and these checks are run even on install targets.
196 TOUT
:= .tmp_gas_check
197 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
199 # gcc-3.4 and binutils-2.14 are a fatal combination.
200 GCC_VERSION
:= $(call cc-version
)
203 @if
test "$(GCC_VERSION)" = "0304" ; then \
204 if
! /bin
/echo mftb
5 |
$(AS
) -v
-mppc
-many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
205 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
206 echo
'correctly with gcc-3.4 and your version of binutils.'; \
207 echo
'*** Please upgrade your binutils or downgrade your gcc'; \
211 @if
! /bin
/echo dssall |
$(AS
) -many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
212 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
213 echo
'correctly with old versions of binutils.' ; \
214 echo
'*** Please upgrade your binutils to 2.12.1 or newer' ; \
218 CLEAN_FILES
+= $(TOUT
)