1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
# Changes for PPC by Gary Thomas
# Rewritten by Cort Dougan and Paul Mackerras
#
HAS_BIARCH := $(call cc-option-yn, -m32)
# Set default 32 bits cross compilers for vdso and boot wrapper
CROSS32_COMPILE ?=
CROSS32CC := $(CROSS32_COMPILE)gcc
CROSS32AS := $(CROSS32_COMPILE)as
CROSS32LD := $(CROSS32_COMPILE)ld
CROSS32AR := $(CROSS32_COMPILE)ar
CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
ifeq ($(HAS_BIARCH),y)
ifeq ($(CROSS32_COMPILE),)
CROSS32CC := $(CC) -m32
CROSS32AS := $(AS) -a32
CROSS32LD := $(LD) -m elf32ppc
CROSS32OBJCOPY := $(OBJCOPY)
CROSS32AR := $(AR)
endif
endif
export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
ifeq ($(CONFIG_PPC64),y)
OLDARCH := ppc64
SZ := 64
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
ifeq ($(new_nm),y)
NM := $(NM) --synthetic
endif
else
OLDARCH := ppc
SZ := 32
endif
UTS_MACHINE := $(OLDARCH)
ifeq ($(HAS_BIARCH),y)
override AS += -a$(SZ)
override LD += -m elf$(SZ)ppc
override CC += -m$(SZ)
endif
LDFLAGS_vmlinux := -Bstatic
# The -Iarch/$(ARCH)/include is temporary while we are merging
CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
CPPFLAGS += $(CPPFLAGS-y)
AFLAGS += $(AFLAGS-y)
CFLAGS += -msoft-float -pipe $(CFLAGS-y)
CPP = $(CC) -E $(CFLAGS)
# Temporary hack until we have migrated to asm-powerpc
LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include
LINUXINCLUDE += $(LINUXINCLUDE-y)
CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
ifeq ($(CONFIG_PPC64),y)
GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
ifeq ($(CONFIG_POWER4_ONLY),y)
ifeq ($(CONFIG_ALTIVEC),y)
ifeq ($(GCC_BROKEN_VEC),y)
CFLAGS += $(call cc-option,-mcpu=970)
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mtune=power4)
endif
endif
# No AltiVec instruction when building kernel
CFLAGS += $(call cc-option,-mno-altivec)
# Enable unit-at-a-time mode when possible. It shrinks the
# kernel considerably.
CFLAGS += $(call cc-option,-funit-at-a-time)
# Never use string load/store instructions as they are
# often slow when they are implemented at all
CFLAGS += -mno-string
ifeq ($(CONFIG_6xx),y)
CFLAGS += -mcpu=powerpc
endif
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
cpu-as-$(CONFIG_E500) += -Wa,-me500
cpu-as-$(CONFIG_E200) += -Wa,-me200
AFLAGS += $(cpu-as-y)
CFLAGS += $(cpu-as-y)
head-y := arch/powerpc/kernel/head_32.o
head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
core-y += arch/powerpc/kernel/ \
arch/powerpc/mm/ \
arch/powerpc/lib/ \
arch/powerpc/sysdev/ \
arch/powerpc/platforms/
core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
core-$(CONFIG_XMON) += arch/powerpc/xmon/
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
# Default to zImage, override when needed
defaultimage-y := zImage
defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
KBUILD_IMAGE := $(defaultimage-y)
all: $(KBUILD_IMAGE)
CPPFLAGS_vmlinux.lds := -Upowerpc
BOOT_TARGETS = zImage zImage.initrd zImage.dts zImage.dts_initrd uImage
PHONY += $(BOOT_TARGETS)
boot := arch/$(ARCH)/boot
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
define archhelp
@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
@echo ' install - Install kernel using'
@echo ' (your) ~/bin/installkernel or'
@echo ' (distribution) /sbin/installkernel or'
@echo ' install to $$(INSTALL_PATH) and run lilo'
@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
endef
install:
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archmrproper:
$(Q)rm -rf arch/$(ARCH)/include
archprepare: checkbin
ifeq ($(CONFIG_PPC32),y)
# Temporary hack until we have migrated to asm-powerpc
include/asm: arch/$(ARCH)/include/asm
arch/$(ARCH)/include/asm: FORCE
$(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
$(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
endif
# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
# to stdout and these checks are run even on install targets.
TOUT := .tmp_gas_check
# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
# instructions.
# gcc-3.4 and binutils-2.14 are a fatal combination.
checkbin:
@if test "$(call cc-version)" = "0304" ; then \
if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
echo 'correctly with gcc-3.4 and your version of binutils.'; \
echo '*** Please upgrade your binutils or downgrade your gcc'; \
false; \
fi ; \
fi
@if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
echo 'correctly with old versions of binutils.' ; \
echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
false ; \
fi
CLEAN_FILES += $(TOUT)
|
