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 CROSS32AS
:= $(CROSS32_COMPILE
)as
22 CROSS32LD
:= $(CROSS32_COMPILE
)ld
23 CROSS32AR
:= $(CROSS32_COMPILE
)ar
24 CROSS32OBJCOPY
:= $(CROSS32_COMPILE
)objcopy
26 ifeq ($(HAS_BIARCH
),y
)
27 ifeq ($(CROSS32_COMPILE
),)
28 CROSS32CC
:= $(CC
) -m32
29 CROSS32AS
:= $(AS
) -a32
30 CROSS32LD
:= $(LD
) -m elf32ppc
31 CROSS32OBJCOPY
:= $(OBJCOPY
)
32 CROSS32AR
:= GNUTARGET
=elf32-powerpc
$(AR
)
36 export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
38 KBUILD_DEFCONFIG
:= $(shell uname
-m
)_defconfig
40 ifeq ($(CONFIG_PPC64
),y
)
44 new_nm
:= $(shell if
$(NM
) --help
2>&1 | grep
-- '--synthetic' > /dev
/null
; then echo y
; else echo n
; fi
)
47 NM
:= $(NM
) --synthetic
55 UTS_MACHINE
:= $(OLDARCH
)
57 ifeq ($(HAS_BIARCH
),y
)
58 override AS
+= -a
$(SZ
)
59 override LD
+= -m elf
$(SZ
)ppc
60 override CC
+= -m
$(SZ
)
61 override AR
:= GNUTARGET
=elf
$(SZ
)-powerpc
$(AR
)
64 LDFLAGS_vmlinux
:= -Bstatic
66 CPPFLAGS-
$(CONFIG_PPC32
) := -Iarch
/$(ARCH
)
67 AFLAGS-
$(CONFIG_PPC32
) := -Iarch
/$(ARCH
)
68 CFLAGS-
$(CONFIG_PPC64
) := -mminimal-toc
-mtraceback
=none
-mcall-aixdesc
69 CFLAGS-
$(CONFIG_PPC32
) := -Iarch
/$(ARCH
) -ffixed-r2
-mmultiple
70 CPPFLAGS
+= $(CPPFLAGS-y
)
72 CFLAGS
+= -msoft-float
-pipe
$(CFLAGS-y
)
73 CPP
= $(CC
) -E
$(CFLAGS
)
75 CHECKFLAGS
+= -m
$(SZ
) -D__powerpc__
-D__powerpc
$(SZ
)__
77 ifeq ($(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 CFLAGS
+= $(call cc-option
,-mcpu
=970)
85 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
88 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
91 CFLAGS
+= $(call cc-option
,-mtune
=power4
)
95 # No AltiVec instruction when building kernel
96 CFLAGS
+= $(call cc-option
,-mno-altivec
)
98 # Enable unit-at-a-time mode when possible. It shrinks the
99 # kernel considerably.
100 CFLAGS
+= $(call cc-option
,-funit-at-a-time
)
102 # Never use string load/store instructions as they are
103 # often slow when they are implemented at all
104 CFLAGS
+= -mno-string
106 ifeq ($(CONFIG_6xx
),y
)
107 CFLAGS
+= -mcpu
=powerpc
110 cpu-as-
$(CONFIG_4xx
) += -Wa
,-m405
111 cpu-as-
$(CONFIG_6xx
) += -Wa
,-maltivec
112 cpu-as-
$(CONFIG_POWER4
) += -Wa
,-maltivec
113 cpu-as-
$(CONFIG_E500
) += -Wa
,-me500
114 cpu-as-
$(CONFIG_E200
) += -Wa
,-me200
116 AFLAGS
+= $(cpu-as-y
)
117 CFLAGS
+= $(cpu-as-y
)
119 head-y
:= arch
/powerpc
/kernel
/head_32.o
120 head-
$(CONFIG_PPC64
) := arch
/powerpc
/kernel
/head_64.o
121 head-
$(CONFIG_8xx
) := arch
/powerpc
/kernel
/head_8xx.o
122 head-
$(CONFIG_40x
) := arch
/powerpc
/kernel
/head_40x.o
123 head-
$(CONFIG_44x
) := arch
/powerpc
/kernel
/head_44x.o
124 head-
$(CONFIG_FSL_BOOKE
) := arch
/powerpc
/kernel
/head_fsl_booke.o
126 head-
$(CONFIG_PPC64
) += arch
/powerpc
/kernel
/entry_64.o
127 head-
$(CONFIG_PPC_FPU
) += arch
/powerpc
/kernel
/fpu.o
129 core-y
+= arch
/powerpc
/kernel
/ \
132 arch
/powerpc
/sysdev
/ \
133 arch
/powerpc
/platforms
/
134 core-
$(CONFIG_MATH_EMULATION
) += arch
/powerpc
/math-emu
/
135 core-
$(CONFIG_XMON
) += arch
/powerpc
/xmon
/
137 drivers-
$(CONFIG_OPROFILE
) += arch
/powerpc
/oprofile
/
139 # Default to zImage, override when needed
140 defaultimage-y
:= zImage
141 defaultimage-
$(CONFIG_DEFAULT_UIMAGE
) := uImage
142 KBUILD_IMAGE
:= $(defaultimage-y
)
145 CPPFLAGS_vmlinux.lds
:= -Upowerpc
147 BOOT_TARGETS
= zImage zImage.initrd uImage
149 PHONY
+= $(BOOT_TARGETS
)
151 boot
:= arch
/$(ARCH
)/boot
153 $(BOOT_TARGETS
): vmlinux
154 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
157 @echo
'* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
158 @echo
' install - Install kernel using'
159 @echo
' (your) ~/bin/installkernel or'
160 @echo
' (distribution) /sbin/installkernel or'
161 @echo
' install to $$(INSTALL_PATH) and run lilo'
162 @echo
' *_defconfig - Select default config from arch/$(ARCH)/configs'
166 $(Q
)$(MAKE
) $(build
)=$(boot
) BOOTIMAGE
=$(KBUILD_IMAGE
) install
169 $(Q
)$(MAKE
) $(clean)=$(boot
)
171 archprepare
: checkbin
173 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
174 # to stdout and these checks are run even on install targets.
175 TOUT
:= .tmp_gas_check
176 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
178 # gcc-3.4 and binutils-2.14 are a fatal combination.
181 @if
test "$(call cc-version)" = "0304" ; then \
182 if
! /bin
/echo mftb
5 |
$(AS
) -v
-mppc
-many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
183 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
184 echo
'correctly with gcc-3.4 and your version of binutils.'; \
185 echo
'*** Please upgrade your binutils or downgrade your gcc'; \
189 @if
test "$(call cc-fullversion)" = "040200" \
190 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
191 echo
-n
'*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
192 echo
'kernel with modules enabled.' ; \
193 echo
-n
'*** Please use a different GCC version or ' ; \
194 echo
'disable kernel modules' ; \
197 @if
! /bin
/echo dssall |
$(AS
) -many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
198 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
199 echo
'correctly with old versions of binutils.' ; \
200 echo
'*** Please upgrade your binutils to 2.12.1 or newer' ; \
204 CLEAN_FILES
+= $(TOUT
)