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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. | |
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 | HAS_BIARCH := $(call cc-option-yn, -m32) | |
16 | ||
17 | # Set default 32 bits cross compilers for vdso and boot wrapper | |
18 | CROSS32_COMPILE ?= | |
19 | ||
20 | CROSS32CC := $(CROSS32_COMPILE)gcc | |
21 | CROSS32AS := $(CROSS32_COMPILE)as | |
22 | CROSS32LD := $(CROSS32_COMPILE)ld | |
23 | CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy | |
24 | ||
25 | ifeq ($(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 | |
33 | ||
34 | export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY | |
35 | ||
36 | KBUILD_DEFCONFIG := $(shell uname -m)_defconfig | |
37 | ||
38 | ifeq ($(CONFIG_PPC64),y) | |
39 | OLDARCH := ppc64 | |
40 | SZ := 64 | |
41 | ||
42 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) | |
43 | ||
44 | ifeq ($(new_nm),y) | |
45 | NM := $(NM) --synthetic | |
46 | endif | |
47 | ||
48 | else | |
49 | OLDARCH := ppc | |
50 | SZ := 32 | |
51 | endif | |
52 | ||
53 | UTS_MACHINE := $(OLDARCH) | |
54 | ||
55 | ifeq ($(HAS_BIARCH),y) | |
56 | override AS += -a$(SZ) | |
57 | override LD += -m elf$(SZ)ppc | |
58 | override CC += -m$(SZ) | |
59 | endif | |
60 | ||
61 | LDFLAGS_vmlinux := -Bstatic | |
62 | ||
63 | # The -Iarch/$(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 += $(LINUXINCLUDE-y) | |
75 | ||
76 | CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__ | |
77 | ||
78 | ifeq ($(CONFIG_PPC64),y) | |
79 | GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi) | |
80 | ||
81 | ifeq ($(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 | |
95 | ||
96 | # No AltiVec instruction when building kernel | |
97 | CFLAGS += $(call cc-option,-mno-altivec) | |
98 | ||
99 | # Enable unit-at-a-time mode when possible. It shrinks the | |
100 | # kernel considerably. | |
101 | CFLAGS += $(call cc-option,-funit-at-a-time) | |
102 | ||
103 | ifndef CONFIG_FSL_BOOKE | |
104 | CFLAGS += -mstring | |
105 | endif | |
106 | ||
107 | cpu-as-$(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 | |
113 | ||
114 | AFLAGS += $(cpu-as-y) | |
115 | CFLAGS += $(cpu-as-y) | |
116 | ||
117 | head-y := arch/powerpc/kernel/head_32.o | |
118 | head-$(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 | |
123 | ||
124 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o | |
125 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o | |
126 | ||
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-$(CONFIG_CPM2) += arch/ppc/8260_io/ | |
139 | ||
140 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
141 | ||
142 | # Default to zImage, override when needed | |
143 | defaultimage-y := zImage | |
144 | defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux | |
145 | defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage | |
146 | KBUILD_IMAGE := $(defaultimage-y) | |
147 | all: $(KBUILD_IMAGE) | |
148 | ||
149 | CPPFLAGS_vmlinux.lds := -Upowerpc | |
150 | ||
151 | BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage | |
152 | ||
153 | PHONY += $(BOOT_TARGETS) | |
154 | ||
155 | boot := arch/$(ARCH)/boot | |
156 | ||
157 | $(BOOT_TARGETS): vmlinux | |
158 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) | |
159 | ||
160 | define archhelp | |
161 | @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' | |
162 | @echo ' install - Install kernel using' | |
163 | @echo ' (your) ~/bin/installkernel or' | |
164 | @echo ' (distribution) /sbin/installkernel or' | |
165 | @echo ' install to $$(INSTALL_PATH) and run lilo' | |
166 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' | |
167 | endef | |
168 | ||
169 | archclean: | |
170 | $(Q)$(MAKE) $(clean)=$(boot) | |
171 | ||
172 | archmrproper: | |
173 | $(Q)rm -rf arch/$(ARCH)/include | |
174 | ||
175 | archprepare: checkbin | |
176 | ||
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/$(ARCH)/include/asm | |
183 | endif | |
184 | ||
185 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output | |
186 | # to stdout and these checks are run even on install targets. | |
187 | TOUT := .tmp_gas_check | |
188 | # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec | |
189 | # instructions. | |
190 | # gcc-3.4 and binutils-2.14 are a fatal combination. | |
191 | ||
192 | checkbin: | |
193 | @if test "$(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 ; \ | |
200 | 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 ; \ | |
206 | fi | |
207 | ||
208 | CLEAN_FILES += $(TOUT) | |
209 |