blob: 8a65e112211b7bd617d4c2d445095e1530b95c25 [file] [log] [blame]
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# 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.
5#
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.
9#
10# Copyright (C) 1994 by Linus Torvalds
11# Changes for PPC by Gary Thomas
12# Rewritten by Cort Dougan and Paul Mackerras
13#
14
15# This must match PAGE_OFFSET in include/asm-powerpc/page.h.
16KERNELLOAD := $(CONFIG_KERNEL_START)
17
18HAS_BIARCH := $(call cc-option-yn, -m32)
19
20ifeq ($(CONFIG_PPC64),y)
21SZ := 64
22
23# Set default 32 bits cross compilers for vdso and boot wrapper
24CROSS32_COMPILE ?=
25
26CROSS32CC := $(CROSS32_COMPILE)gcc
27CROSS32AS := $(CROSS32_COMPILE)as
28CROSS32LD := $(CROSS32_COMPILE)ld
29CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
30
31ifeq ($(HAS_BIARCH),y)
32ifeq ($(CROSS32_COMPILE),)
33CROSS32CC := $(CC) -m32
34CROSS32AS := $(AS) -a32
35CROSS32LD := $(LD) -m elf32ppc
36CROSS32OBJCOPY := $(OBJCOPY)
37endif
38endif
39
40export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
41
42new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
43
44ifeq ($(new_nm),y)
45NM := $(NM) --synthetic
46endif
47
48else
49SZ := 32
50endif
51
52ifeq ($(HAS_BIARCH),y)
53override AS += -a$(SZ)
54override LD += -m elf$(SZ)ppc
55override CC += -m$(SZ)
56endif
57
58LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic -e $(KERNELLOAD)
59
60# The -Iarch/$(ARCH)/include is temporary while we are merging
61CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
62AFLAGS += -Iarch/$(ARCH)
63CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe
64ifeq ($(CONFIG_PPC64),y)
65CFLAGS += -mminimal-toc -mtraceback=none -mcall-aixdesc
66else
67CFLAGS += -ffixed-r2 -mmultiple
68endif
69CPP = $(CC) -E $(CFLAGS)
70# Temporary hack until we have migrated to asm-powerpc
71LINUXINCLUDE += -Iarch/$(ARCH)/include
72
73CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
74
75ifeq ($(CONFIG_PPC64),y)
76GCC_VERSION := $(call cc-version)
77GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi)
78
79ifeq ($(CONFIG_POWER4_ONLY),y)
80ifeq ($(CONFIG_ALTIVEC),y)
81ifeq ($(GCC_BROKEN_VEC),y)
82 CFLAGS += $(call cc-option,-mcpu=970)
83else
84 CFLAGS += $(call cc-option,-mcpu=power4)
85endif
86else
87 CFLAGS += $(call cc-option,-mcpu=power4)
88endif
89else
90 CFLAGS += $(call cc-option,-mtune=power4)
91endif
92endif
93
94# Enable unit-at-a-time mode when possible. It shrinks the
95# kernel considerably.
96CFLAGS += $(call cc-option,-funit-at-a-time)
97
98ifndef CONFIG_FSL_BOOKE
99CFLAGS += -mstring
100endif
101
102cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
103cpu-as-$(CONFIG_4xx) += -Wa,-m405
104cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
105cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
106cpu-as-$(CONFIG_E500) += -Wa,-me500
107cpu-as-$(CONFIG_E200) += -Wa,-me200
108
109AFLAGS += $(cpu-as-y)
110CFLAGS += $(cpu-as-y)
111
112# Default to the common case.
113KBUILD_DEFCONFIG := common_defconfig
114
115head-y := arch/powerpc/kernel/head.o
116head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
117head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
118head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
119head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
120head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
121
122ifeq ($(CONFIG_PPC32),y)
123head-$(CONFIG_6xx) += arch/powerpc/kernel/idle_6xx.o
124head-$(CONFIG_POWER4) += arch/powerpc/kernel/idle_power4.o
125head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
126endif
127
128core-y += arch/powerpc/kernel/ \
129 arch/powerpc/mm/ \
130 arch/powerpc/lib/ \
131 arch/powerpc/sysdev/
132core-$(CONFIG_PPC32) += arch/ppc/kernel/ \
133 arch/ppc/syslib/
134core-$(CONFIG_PPC64) += arch/ppc64/kernel/
135core-$(CONFIG_PPC_PMAC) += arch/powerpc/platforms/powermac/
136core-$(CONFIG_4xx) += arch/ppc/platforms/4xx/
137core-$(CONFIG_83xx) += arch/ppc/platforms/83xx/
138core-$(CONFIG_85xx) += arch/ppc/platforms/85xx/
139core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/
140core-$(CONFIG_XMON) += arch/powerpc/xmon/
141core-$(CONFIG_APUS) += arch/ppc/amiga/
142drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
143drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
144drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
145
146drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
147
148BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
149
150.PHONY: $(BOOT_TARGETS)
151
152all: uImage zImage
153
154CPPFLAGS_vmlinux.lds := -Upowerpc
155
156# All the instructions talk about "make bzImage".
157bzImage: zImage
158
159boot := arch/$(ARCH)/boot
160
161$(BOOT_TARGETS): vmlinux
162 $(Q)$(MAKE) $(build)=$(boot) $@
163
164uImage: vmlinux
165 $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
166
167define archhelp
168 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
169 @echo ' uImage - Create a bootable image for U-Boot / PPCBoot'
170 @echo ' install - Install kernel using'
171 @echo ' (your) ~/bin/installkernel or'
172 @echo ' (distribution) /sbin/installkernel or'
173 @echo ' install to $$(INSTALL_PATH) and run lilo'
174 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs'
175endef
176
177archclean:
178 $(Q)$(MAKE) $(clean)=arch/ppc/boot
179 # Temporary hack until we have migrated to asm-powerpc
180 $(Q)rm -rf arch/$(ARCH)/include
181
182archprepare: checkbin
183
184# Temporary hack until we have migrated to asm-powerpc
185ifeq ($(CONFIG_PPC64),y)
186include/asm: arch/$(ARCH)/include/asm
187arch/$(ARCH)/include/asm:
188 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
189 $(Q)ln -fsn $(srctree)/include/asm-ppc64 arch/$(ARCH)/include/asm
190else
191include/asm: arch/$(ARCH)/include/asm
192arch/$(ARCH)/include/asm:
193 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
194 $(Q)ln -fsn $(srctree)/include/asm-ppc arch/$(ARCH)/include/asm
195endif
196
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.
199TOUT := .tmp_gas_check
200# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
201# instructions.
202# gcc-3.4 and binutils-2.14 are a fatal combination.
203GCC_VERSION := $(call cc-version)
204
205checkbin:
206 @if test "$(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'; \
211 false; \
212 fi ; \
213 fi
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' ; \
218 false ; \
219 fi
220
221CLEAN_FILES += $(TOUT)
222