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14cf11af PM |
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 | # This must match PAGE_OFFSET in include/asm-powerpc/page.h. | |
16 | KERNELLOAD := $(CONFIG_KERNEL_START) | |
17 | ||
18 | HAS_BIARCH := $(call cc-option-yn, -m32) | |
19 | ||
20 | ifeq ($(CONFIG_PPC64),y) | |
bbeb3f4c | 21 | OLDARCH := ppc64 |
14cf11af PM |
22 | SZ := 64 |
23 | ||
24 | # Set default 32 bits cross compilers for vdso and boot wrapper | |
25 | CROSS32_COMPILE ?= | |
26 | ||
27 | CROSS32CC := $(CROSS32_COMPILE)gcc | |
28 | CROSS32AS := $(CROSS32_COMPILE)as | |
29 | CROSS32LD := $(CROSS32_COMPILE)ld | |
30 | CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy | |
31 | ||
32 | ifeq ($(HAS_BIARCH),y) | |
33 | ifeq ($(CROSS32_COMPILE),) | |
34 | CROSS32CC := $(CC) -m32 | |
35 | CROSS32AS := $(AS) -a32 | |
36 | CROSS32LD := $(LD) -m elf32ppc | |
37 | CROSS32OBJCOPY := $(OBJCOPY) | |
38 | endif | |
39 | endif | |
40 | ||
41 | export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY | |
42 | ||
43 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) | |
44 | ||
45 | ifeq ($(new_nm),y) | |
46 | NM := $(NM) --synthetic | |
47 | endif | |
48 | ||
49 | else | |
bbeb3f4c | 50 | OLDARCH := ppc |
14cf11af PM |
51 | SZ := 32 |
52 | endif | |
53 | ||
54 | ifeq ($(HAS_BIARCH),y) | |
55 | override AS += -a$(SZ) | |
56 | override LD += -m elf$(SZ)ppc | |
57 | override CC += -m$(SZ) | |
58 | endif | |
59 | ||
60 | LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic -e $(KERNELLOAD) | |
61 | ||
62 | # The -Iarch/$(ARCH)/include is temporary while we are merging | |
63 | CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include | |
64 | AFLAGS += -Iarch/$(ARCH) | |
65 | CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe | |
bbeb3f4c SR |
66 | CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc |
67 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple | |
68 | CFLAGS += $(CFLAGS-y) | |
14cf11af PM |
69 | CPP = $(CC) -E $(CFLAGS) |
70 | # Temporary hack until we have migrated to asm-powerpc | |
71 | LINUXINCLUDE += -Iarch/$(ARCH)/include | |
72 | ||
73 | CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__ | |
74 | ||
75 | ifeq ($(CONFIG_PPC64),y) | |
76 | GCC_VERSION := $(call cc-version) | |
77 | GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi) | |
78 | ||
79 | ifeq ($(CONFIG_POWER4_ONLY),y) | |
80 | ifeq ($(CONFIG_ALTIVEC),y) | |
81 | ifeq ($(GCC_BROKEN_VEC),y) | |
82 | CFLAGS += $(call cc-option,-mcpu=970) | |
83 | else | |
84 | CFLAGS += $(call cc-option,-mcpu=power4) | |
85 | endif | |
86 | else | |
87 | CFLAGS += $(call cc-option,-mcpu=power4) | |
88 | endif | |
89 | else | |
90 | CFLAGS += $(call cc-option,-mtune=power4) | |
91 | endif | |
92 | endif | |
93 | ||
94 | # Enable unit-at-a-time mode when possible. It shrinks the | |
95 | # kernel considerably. | |
96 | CFLAGS += $(call cc-option,-funit-at-a-time) | |
97 | ||
98 | ifndef CONFIG_FSL_BOOKE | |
99 | CFLAGS += -mstring | |
100 | endif | |
101 | ||
102 | cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge | |
103 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 | |
104 | cpu-as-$(CONFIG_6xx) += -Wa,-maltivec | |
105 | cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec | |
106 | cpu-as-$(CONFIG_E500) += -Wa,-me500 | |
107 | cpu-as-$(CONFIG_E200) += -Wa,-me200 | |
108 | ||
109 | AFLAGS += $(cpu-as-y) | |
110 | CFLAGS += $(cpu-as-y) | |
111 | ||
112 | # Default to the common case. | |
113 | KBUILD_DEFCONFIG := common_defconfig | |
114 | ||
70d64cea | 115 | head-y := arch/powerpc/kernel/head_32.o |
14cf11af PM |
116 | head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o |
117 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o | |
118 | head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o | |
119 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o | |
120 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o | |
121 | ||
14cf11af | 122 | head-$(CONFIG_6xx) += arch/powerpc/kernel/idle_6xx.o |
9994a338 | 123 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
14cf11af | 124 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
14cf11af | 125 | |
daec962e PM |
126 | core-y += arch/powerpc/kernel/ \ |
127 | arch/$(OLDARCH)/kernel/ \ | |
128 | arch/powerpc/mm/ \ | |
129 | arch/powerpc/lib/ \ | |
130 | arch/powerpc/sysdev/ \ | |
131 | arch/powerpc/platforms/ | |
14cf11af PM |
132 | core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/ |
133 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ | |
134 | core-$(CONFIG_APUS) += arch/ppc/amiga/ | |
135 | drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/ | |
136 | drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/ | |
137 | drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/ | |
138 | ||
139 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ | |
140 | ||
cabb5587 SR |
141 | defaultimage-$(CONFIG_PPC32) := uImage zImage |
142 | defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux | |
143 | KBUILD_IMAGE := $(defaultimage-y) | |
144 | all: $(KBUILD_IMAGE) | |
14cf11af PM |
145 | |
146 | CPPFLAGS_vmlinux.lds := -Upowerpc | |
147 | ||
148 | # All the instructions talk about "make bzImage". | |
149 | bzImage: zImage | |
150 | ||
cabb5587 SR |
151 | BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm |
152 | ||
153 | .PHONY: $(BOOT_TARGETS) | |
154 | ||
a3a9e99e | 155 | boot := arch/$(OLDARCH)/boot |
14cf11af PM |
156 | |
157 | $(BOOT_TARGETS): vmlinux | |
a3a9e99e | 158 | $(Q)$(MAKE) ARCH=$(OLDARCH) $(build)=$(boot) $@ |
14cf11af PM |
159 | |
160 | uImage: vmlinux | |
a3a9e99e | 161 | $(Q)$(MAKE) ARCH=$(OLDARCH) $(build)=$(boot)/images $(boot)/images/$@ |
14cf11af PM |
162 | |
163 | define archhelp | |
164 | @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)' | |
165 | @echo ' uImage - Create a bootable image for U-Boot / PPCBoot' | |
166 | @echo ' install - Install kernel using' | |
167 | @echo ' (your) ~/bin/installkernel or' | |
168 | @echo ' (distribution) /sbin/installkernel or' | |
169 | @echo ' install to $$(INSTALL_PATH) and run lilo' | |
170 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs' | |
171 | endef | |
172 | ||
173 | archclean: | |
a3a9e99e | 174 | $(Q)$(MAKE) $(clean)=$(boot) |
14cf11af PM |
175 | # Temporary hack until we have migrated to asm-powerpc |
176 | $(Q)rm -rf arch/$(ARCH)/include | |
177 | ||
178 | archprepare: checkbin | |
179 | ||
180 | # Temporary hack until we have migrated to asm-powerpc | |
14cf11af PM |
181 | include/asm: arch/$(ARCH)/include/asm |
182 | arch/$(ARCH)/include/asm: | |
183 | $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi | |
bbeb3f4c | 184 | $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm |
14cf11af PM |
185 | |
186 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output | |
187 | # to stdout and these checks are run even on install targets. | |
188 | TOUT := .tmp_gas_check | |
189 | # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec | |
190 | # instructions. | |
191 | # gcc-3.4 and binutils-2.14 are a fatal combination. | |
192 | GCC_VERSION := $(call cc-version) | |
193 | ||
194 | checkbin: | |
195 | @if test "$(GCC_VERSION)" = "0304" ; then \ | |
196 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ | |
197 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ | |
198 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ | |
199 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ | |
200 | false; \ | |
201 | fi ; \ | |
202 | fi | |
203 | @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ | |
204 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ | |
205 | echo 'correctly with old versions of binutils.' ; \ | |
206 | echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ | |
207 | false ; \ | |
208 | fi | |
209 | ||
210 | CLEAN_FILES += $(TOUT) | |
211 |