[ARM] Support register switch in nommu mode
[linux-2.6/verdex.git] / arch / powerpc / Makefile
blobd3654a264ef7533a8811f9e170fb4f7b4c5499ab
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
4 # this architecture.
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
8 # for more details.
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
18 CROSS32_COMPILE ?=
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)
31 endif
32 endif
34 export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
36 KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
38 ifeq ($(CONFIG_PPC64),y)
39 OLDARCH := ppc64
40 SZ := 64
42 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
44 ifeq ($(new_nm),y)
45 NM := $(NM) --synthetic
46 endif
48 else
49 OLDARCH := ppc
50 SZ := 32
51 endif
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$(SZ)
59 endif
61 LDFLAGS_vmlinux := -Bstatic
63 # The -Iarch/$(ARCH)/include is temporary while we are merging
64 CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
65 AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
66 CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
67 CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
68 CPPFLAGS += $(CPPFLAGS-y)
69 AFLAGS += $(AFLAGS-y)
70 CFLAGS += -msoft-float -pipe $(CFLAGS-y)
71 CPP = $(CC) -E $(CFLAGS)
72 # Temporary hack until we have migrated to asm-powerpc
73 LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include
74 LINUXINCLUDE += $(LINUXINCLUDE-y)
76 CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
78 ifeq ($(CONFIG_PPC64),y)
79 GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
81 ifeq ($(CONFIG_POWER4_ONLY),y)
82 ifeq ($(CONFIG_ALTIVEC),y)
83 ifeq ($(GCC_BROKEN_VEC),y)
84 CFLAGS += $(call cc-option,-mcpu=970)
85 else
86 CFLAGS += $(call cc-option,-mcpu=power4)
87 endif
88 else
89 CFLAGS += $(call cc-option,-mcpu=power4)
90 endif
91 else
92 CFLAGS += $(call cc-option,-mtune=power4)
93 endif
94 endif
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 += $(call cc-option,-funit-at-a-time)
103 ifndef CONFIG_FSL_BOOKE
104 CFLAGS += -mstring
105 endif
107 cpu-as-$(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 += $(cpu-as-y)
117 head-y := arch/powerpc/kernel/head_32.o
118 head-$(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/powerpc/mm/ \
129 arch/powerpc/lib/ \
130 arch/powerpc/sysdev/ \
131 arch/powerpc/platforms/
132 core-$(CONFIG_PPC32) += arch/ppc/kernel/
133 core-$(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-$(CONFIG_PPC32) := zImage
143 defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
144 defaultimage-$(CONFIG_PPC_PSERIES) := zImage
145 KBUILD_IMAGE := $(defaultimage-y)
146 all: $(KBUILD_IMAGE)
148 CPPFLAGS_vmlinux.lds := -Upowerpc
150 # All the instructions talk about "make bzImage".
151 bzImage: zImage
153 BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
155 .PHONY: $(BOOT_TARGETS)
157 boot := arch/$(ARCH)/boot
159 $(BOOT_TARGETS): vmlinux
160 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
162 define archhelp
163 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
164 @echo ' install - Install kernel using'
165 @echo ' (your) ~/bin/installkernel or'
166 @echo ' (distribution) /sbin/installkernel or'
167 @echo ' install to $$(INSTALL_PATH) and run lilo'
168 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
169 endef
171 archclean:
172 $(Q)$(MAKE) $(clean)=$(boot)
173 $(Q)rm -rf arch/$(ARCH)/include
175 archprepare: checkbin
177 ifeq ($(CONFIG_PPC32),y)
178 # Temporary hack until we have migrated to asm-powerpc
179 include/asm: arch/$(ARCH)/include/asm
180 arch/$(ARCH)/include/asm: FORCE
181 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
182 $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
183 endif
185 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
186 # to stdout and these checks are run even on install targets.
187 TOUT := .tmp_gas_check
188 # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
189 # instructions.
190 # gcc-3.4 and binutils-2.14 are a fatal combination.
192 checkbin:
193 @if test "$(call cc-version)" = "0304" ; then \
194 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
195 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
196 echo 'correctly with gcc-3.4 and your version of binutils.'; \
197 echo '*** Please upgrade your binutils or downgrade your gcc'; \
198 false; \
199 fi ; \
201 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
202 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
203 echo 'correctly with old versions of binutils.' ; \
204 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
205 false ; \
208 CLEAN_FILES += $(TOUT)