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 CROSS32OBJCOPY
:= $(CROSS32_COMPILE
)objcopy
25 ifeq ($(HAS_BIARCH
),y
)
26 ifeq ($(CROSS32_COMPILE
),)
27 CROSS32CC
:= $(CC
) -m32
28 CROSS32AS
:= $(AS
) -a32
29 CROSS32LD
:= $(LD
) -m elf32ppc
30 CROSS32OBJCOPY
:= $(OBJCOPY
)
34 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
36 KBUILD_DEFCONFIG
:= $(shell uname
-m
)_defconfig
38 ifeq ($(CONFIG_PPC64
),y
)
42 new_nm
:= $(shell if
$(NM
) --help
2>&1 | grep
-- '--synthetic' > /dev
/null
; then echo y
; else echo n
; fi
)
45 NM
:= $(NM
) --synthetic
53 UTS_MACHINE
:= $(OLDARCH
)
55 ifeq ($(HAS_BIARCH
),y
)
56 override AS
+= -a
$(SZ
)
57 override LD
+= -m elf
$(SZ
)ppc
58 override CC
+= -m
$(SZ
)
61 LDFLAGS_vmlinux
:= -Bstatic
63 # The -Iarch/$(ARCH)/include is temporary while we are merging
64 CPPFLAGS
+= -Iarch
/$(ARCH
) -Iarch
/$(ARCH
)/include
65 AFLAGS
+= -Iarch
/$(ARCH
)
66 CFLAGS
+= -Iarch
/$(ARCH
) -msoft-float
-pipe
67 CFLAGS-
$(CONFIG_PPC64
) := -mminimal-toc
-mtraceback
=none
-mcall-aixdesc
68 CFLAGS-
$(CONFIG_PPC32
) := -ffixed-r2
-mmultiple
70 CPP
= $(CC
) -E
$(CFLAGS
)
71 # Temporary hack until we have migrated to asm-powerpc
72 LINUXINCLUDE
+= -Iarch
/$(ARCH
)/include
74 CHECKFLAGS
+= -m
$(SZ
) -D__powerpc__
-D__powerpc
$(SZ
)__
76 ifeq ($(CONFIG_PPC64
),y
)
77 GCC_VERSION
:= $(call cc-version
)
78 GCC_BROKEN_VEC
:= $(shell if
[ $(GCC_VERSION
) -lt
0400 ] ; then echo
"y"; fi
)
80 ifeq ($(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 ifndef CONFIG_FSL_BOOKE
106 cpu-as-
$(CONFIG_PPC64BRIDGE
) += -Wa
,-mppc64bridge
107 cpu-as-
$(CONFIG_4xx
) += -Wa
,-m405
108 cpu-as-
$(CONFIG_6xx
) += -Wa
,-maltivec
109 cpu-as-
$(CONFIG_POWER4
) += -Wa
,-maltivec
110 cpu-as-
$(CONFIG_E500
) += -Wa
,-me500
111 cpu-as-
$(CONFIG_E200
) += -Wa
,-me200
113 AFLAGS
+= $(cpu-as-y
)
114 CFLAGS
+= $(cpu-as-y
)
116 head-y
:= arch
/powerpc
/kernel
/head_32.o
117 head-
$(CONFIG_PPC64
) := arch
/powerpc
/kernel
/head_64.o
118 head-
$(CONFIG_8xx
) := arch
/powerpc
/kernel
/head_8xx.o
119 head-
$(CONFIG_4xx
) := arch
/powerpc
/kernel
/head_4xx.o
120 head-
$(CONFIG_44x
) := arch
/powerpc
/kernel
/head_44x.o
121 head-
$(CONFIG_FSL_BOOKE
) := arch
/powerpc
/kernel
/head_fsl_booke.o
123 head-
$(CONFIG_PPC64
) += arch
/powerpc
/kernel
/entry_64.o
124 head-
$(CONFIG_PPC_FPU
) += arch
/powerpc
/kernel
/fpu.o
126 core-y
+= arch
/powerpc
/kernel
/ \
129 arch
/powerpc
/sysdev
/ \
130 arch
/powerpc
/platforms
/
131 core-
$(CONFIG_PPC32
) += arch
/ppc
/kernel
/
132 core-
$(CONFIG_MATH_EMULATION
) += arch
/ppc
/math-emu
/
133 core-
$(CONFIG_XMON
) += arch
/powerpc
/xmon
/
134 core-
$(CONFIG_APUS
) += arch
/ppc
/amiga
/
135 drivers-
$(CONFIG_8xx
) += arch
/ppc
/8xx_io
/
136 drivers-
$(CONFIG_4xx
) += arch
/ppc
/4xx_io
/
137 drivers-
$(CONFIG_CPM2
) += arch
/ppc
/8260_io
/
139 drivers-
$(CONFIG_OPROFILE
) += arch
/powerpc
/oprofile
/
141 defaultimage-
$(CONFIG_PPC32
) := zImage
142 defaultimage-
$(CONFIG_PPC_ISERIES
) := vmlinux
143 defaultimage-
$(CONFIG_PPC_PSERIES
) := zImage
144 KBUILD_IMAGE
:= $(defaultimage-y
)
147 CPPFLAGS_vmlinux.lds
:= -Upowerpc
149 # All the instructions talk about "make bzImage".
152 BOOT_TARGETS
= zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
154 .PHONY
: $(BOOT_TARGETS
)
156 boot
:= arch
/$(ARCH
)/boot
158 $(BOOT_TARGETS
): vmlinux
159 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
162 @echo
'* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
163 @echo
' install - Install kernel using'
164 @echo
' (your) ~/bin/installkernel or'
165 @echo
' (distribution) /sbin/installkernel or'
166 @echo
' install to $$(INSTALL_PATH) and run lilo'
167 @echo
' *_defconfig - Select default config from arch/$(ARCH)/configs'
171 $(Q
)$(MAKE
) $(clean)=$(boot
)
172 $(Q
)rm -rf arch
/$(ARCH
)/include
174 archprepare
: checkbin
176 # Temporary hack until we have migrated to asm-powerpc
177 include/asm
: arch
/$(ARCH
)/include/asm
178 arch
/$(ARCH
)/include/asm
: FORCE
179 $(Q
)if
[ ! -d arch
/$(ARCH
)/include ]; then mkdir
-p arch
/$(ARCH
)/include; fi
180 $(Q
)ln
-fsn
$(srctree
)/include/asm-
$(OLDARCH
) arch
/$(ARCH
)/include/asm
182 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
183 # to stdout and these checks are run even on install targets.
184 TOUT
:= .tmp_gas_check
185 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
187 # gcc-3.4 and binutils-2.14 are a fatal combination.
188 GCC_VERSION
:= $(call cc-version
)
191 @if
test "$(GCC_VERSION)" = "0304" ; then \
192 if
! /bin
/echo mftb
5 |
$(AS
) -v
-mppc
-many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
193 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
194 echo
'correctly with gcc-3.4 and your version of binutils.'; \
195 echo
'*** Please upgrade your binutils or downgrade your gcc'; \
199 @if
! /bin
/echo dssall |
$(AS
) -many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
200 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
201 echo
'correctly with old versions of binutils.' ; \
202 echo
'*** Please upgrade your binutils to 2.12.1 or newer' ; \
206 CLEAN_FILES
+= $(TOUT
)