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 # This must match PAGE_OFFSET in include/asm-powerpc/page.h.
16 KERNELLOAD
:= $(CONFIG_KERNEL_START
)
18 HAS_BIARCH
:= $(call cc-option-yn
, -m32
)
20 ifeq ($(CONFIG_PPC64
),y
)
24 # Set default 32 bits cross compilers for vdso and boot wrapper
27 CROSS32CC
:= $(CROSS32_COMPILE
)gcc
28 CROSS32AS
:= $(CROSS32_COMPILE
)as
29 CROSS32LD
:= $(CROSS32_COMPILE
)ld
30 CROSS32OBJCOPY
:= $(CROSS32_COMPILE
)objcopy
32 ifeq ($(HAS_BIARCH
),y
)
33 ifeq ($(CROSS32_COMPILE
),)
34 CROSS32CC
:= $(CC
) -m32
35 CROSS32AS
:= $(AS
) -a32
36 CROSS32LD
:= $(LD
) -m elf32ppc
37 CROSS32OBJCOPY
:= $(OBJCOPY
)
41 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
43 new_nm
:= $(shell if
$(NM
) --help
2>&1 | grep
-- '--synthetic' > /dev
/null
; then echo y
; else echo n
; fi
)
46 NM
:= $(NM
) --synthetic
54 UTS_MACHINE
:= $(OLDARCH
)
56 ifeq ($(HAS_BIARCH
),y
)
57 override AS
+= -a
$(SZ
)
58 override LD
+= -m elf
$(SZ
)ppc
59 override CC
+= -m
$(SZ
)
62 LDFLAGS_vmlinux
:= -Ttext
$(KERNELLOAD
) -Bstatic
-e
$(KERNELLOAD
)
64 # The -Iarch/$(ARCH)/include is temporary while we are merging
65 CPPFLAGS
+= -Iarch
/$(ARCH
) -Iarch
/$(ARCH
)/include
66 AFLAGS
+= -Iarch
/$(ARCH
)
67 CFLAGS
+= -Iarch
/$(ARCH
) -msoft-float
-pipe
68 CFLAGS-
$(CONFIG_PPC64
) := -mminimal-toc
-mtraceback
=none
-mcall-aixdesc
69 CFLAGS-
$(CONFIG_PPC32
) := -ffixed-r2
-mmultiple
71 CPP
= $(CC
) -E
$(CFLAGS
)
72 # Temporary hack until we have migrated to asm-powerpc
73 LINUXINCLUDE
+= -Iarch
/$(ARCH
)/include
75 CHECKFLAGS
+= -m
$(SZ
) -D__powerpc__
-D__powerpc
$(SZ
)__
77 ifeq ($(CONFIG_PPC64
),y
)
78 GCC_VERSION
:= $(call cc-version
)
79 GCC_BROKEN_VEC
:= $(shell if
[ $(GCC_VERSION
) -lt
0400 ] ; then echo
"y"; fi
)
81 ifeq ($(CONFIG_POWER4_ONLY
),y
)
82 ifeq ($(CONFIG_ALTIVEC
),y
)
83 ifeq ($(GCC_BROKEN_VEC
),y
)
84 CFLAGS
+= $(call cc-option
,-mcpu
=970)
86 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
89 CFLAGS
+= $(call cc-option
,-mcpu
=power4
)
92 CFLAGS
+= $(call cc-option
,-mtune
=power4
)
96 # No AltiVec instruction when building kernel
97 CFLAGS
+= $(call cc-option
,-mno-altivec
)
99 # Enable unit-at-a-time mode when possible. It shrinks the
100 # kernel considerably.
101 CFLAGS
+= $(call cc-option
,-funit-at-a-time
)
103 ifndef CONFIG_FSL_BOOKE
107 cpu-as-
$(CONFIG_PPC64BRIDGE
) += -Wa
,-mppc64bridge
108 cpu-as-
$(CONFIG_4xx
) += -Wa
,-m405
109 cpu-as-
$(CONFIG_6xx
) += -Wa
,-maltivec
110 cpu-as-
$(CONFIG_POWER4
) += -Wa
,-maltivec
111 cpu-as-
$(CONFIG_E500
) += -Wa
,-me500
112 cpu-as-
$(CONFIG_E200
) += -Wa
,-me200
114 AFLAGS
+= $(cpu-as-y
)
115 CFLAGS
+= $(cpu-as-y
)
117 # Default to the common case.
118 KBUILD_DEFCONFIG
:= common_defconfig
120 head-y
:= arch
/powerpc
/kernel
/head_32.o
121 head-
$(CONFIG_PPC64
) := arch
/powerpc
/kernel
/head_64.o
122 head-
$(CONFIG_8xx
) := arch
/powerpc
/kernel
/head_8xx.o
123 head-
$(CONFIG_4xx
) := arch
/powerpc
/kernel
/head_4xx.o
124 head-
$(CONFIG_44x
) := arch
/powerpc
/kernel
/head_44x.o
125 head-
$(CONFIG_FSL_BOOKE
) := arch
/powerpc
/kernel
/head_fsl_booke.o
127 head-
$(CONFIG_PPC64
) += arch
/powerpc
/kernel
/entry_64.o
128 head-
$(CONFIG_PPC_FPU
) += arch
/powerpc
/kernel
/fpu.o
130 core-y
+= arch
/powerpc
/kernel
/ \
131 arch
/$(OLDARCH
)/kernel
/ \
134 arch
/powerpc
/sysdev
/ \
135 arch
/powerpc
/platforms
/
136 core-
$(CONFIG_MATH_EMULATION
) += arch
/ppc
/math-emu
/
137 core-
$(CONFIG_XMON
) += arch
/powerpc
/xmon
/
138 core-
$(CONFIG_APUS
) += arch
/ppc
/amiga
/
139 drivers-
$(CONFIG_8xx
) += arch
/ppc
/8xx_io
/
140 drivers-
$(CONFIG_4xx
) += arch
/ppc
/4xx_io
/
141 drivers-
$(CONFIG_CPM2
) += arch
/ppc
/8260_io
/
143 drivers-
$(CONFIG_OPROFILE
) += arch
/powerpc
/oprofile
/
145 defaultimage-
$(CONFIG_PPC32
) := uImage zImage
146 defaultimage-
$(CONFIG_PPC_ISERIES
) := vmlinux
147 defaultimage-
$(CONFIG_PPC_PSERIES
) := zImage
148 KBUILD_IMAGE
:= $(defaultimage-y
)
151 CPPFLAGS_vmlinux.lds
:= -Upowerpc
153 # All the instructions talk about "make bzImage".
156 BOOT_TARGETS
= zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
158 .PHONY
: $(BOOT_TARGETS
)
160 boot
:= arch
/$(OLDARCH
)/boot
163 ifeq ($(CONFIG_PPC64
),y
)
164 $(BOOT_TARGETS
): vmlinux
165 $(Q
)$(MAKE
) ARCH
=ppc64
$(build
)=$(boot
) $(patsubst %,$(boot
)/%,$@
)
167 $(BOOT_TARGETS
): vmlinux
168 $(Q
)$(MAKE
) ARCH
=ppc
$(build
)=$(boot
) $@
172 $(Q
)$(MAKE
) ARCH
=$(OLDARCH
) $(build
)=$(boot
)/images
$(boot
)/images
/$@
175 @echo
'* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
176 @echo
' uImage - Create a bootable image for U-Boot / PPCBoot'
177 @echo
' install - Install kernel using'
178 @echo
' (your) ~/bin/installkernel or'
179 @echo
' (distribution) /sbin/installkernel or'
180 @echo
' install to $$(INSTALL_PATH) and run lilo'
181 @echo
' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs'
185 $(Q
)$(MAKE
) $(clean)=$(boot
)
186 # Temporary hack until we have migrated to asm-powerpc
187 $(Q
)rm -rf arch
/$(ARCH
)/include
189 archprepare
: checkbin
191 # Temporary hack until we have migrated to asm-powerpc
192 include/asm
: arch
/$(ARCH
)/include/asm
193 arch
/$(ARCH
)/include/asm
:
194 $(Q
)if
[ ! -d arch
/$(ARCH
)/include ]; then mkdir
-p arch
/$(ARCH
)/include; fi
195 $(Q
)ln
-fsn
$(srctree
)/include/asm-
$(OLDARCH
) arch
/$(ARCH
)/include/asm
197 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
198 # to stdout and these checks are run even on install targets.
199 TOUT
:= .tmp_gas_check
200 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
202 # gcc-3.4 and binutils-2.14 are a fatal combination.
203 GCC_VERSION
:= $(call cc-version
)
206 @if
test "$(GCC_VERSION)" = "0304" ; then \
207 if
! /bin
/echo mftb
5 |
$(AS
) -v
-mppc
-many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
208 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
209 echo
'correctly with gcc-3.4 and your version of binutils.'; \
210 echo
'*** Please upgrade your binutils or downgrade your gcc'; \
214 @if
! /bin
/echo dssall |
$(AS
) -many
-o
$(TOUT
) >/dev
/null
2>&1 ; then \
215 echo
-n
'*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
216 echo
'correctly with old versions of binutils.' ; \
217 echo
'*** Please upgrade your binutils to 2.12.1 or newer' ; \
221 CLEAN_FILES
+= $(TOUT
)