| 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 | CROSS32AR := $(CROSS32_COMPILE)ar |
| 22 | |
| 23 | ifeq ($(HAS_BIARCH),y) |
| 24 | ifeq ($(CROSS32_COMPILE),) |
| 25 | CROSS32CC := $(CC) -m32 |
| 26 | CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
| 27 | endif |
| 28 | endif |
| 29 | |
| 30 | export CROSS32CC CROSS32AR |
| 31 | |
| 32 | ifeq ($(CROSS_COMPILE),) |
| 33 | KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
| 34 | else |
| 35 | KBUILD_DEFCONFIG := ppc64_defconfig |
| 36 | endif |
| 37 | |
| 38 | ifeq ($(CONFIG_PPC64),y) |
| 39 | OLDARCH := ppc64 |
| 40 | |
| 41 | new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
| 42 | |
| 43 | ifeq ($(new_nm),y) |
| 44 | NM := $(NM) --synthetic |
| 45 | endif |
| 46 | |
| 47 | else |
| 48 | OLDARCH := ppc |
| 49 | endif |
| 50 | |
| 51 | # It seems there are times we use this Makefile without |
| 52 | # including the config file, but this replicates the old behaviour |
| 53 | ifeq ($(CONFIG_WORD_SIZE),) |
| 54 | CONFIG_WORD_SIZE := 32 |
| 55 | endif |
| 56 | |
| 57 | UTS_MACHINE := $(OLDARCH) |
| 58 | |
| 59 | ifeq ($(HAS_BIARCH),y) |
| 60 | override AS += -a$(CONFIG_WORD_SIZE) |
| 61 | override LD += -m elf$(CONFIG_WORD_SIZE)ppc |
| 62 | override CC += -m$(CONFIG_WORD_SIZE) |
| 63 | override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR) |
| 64 | endif |
| 65 | |
| 66 | LDFLAGS_vmlinux-yy := -Bstatic |
| 67 | LDFLAGS_vmlinux-$(CONFIG_PPC64)$(CONFIG_RELOCATABLE) := -pie |
| 68 | LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-yy) |
| 69 | |
| 70 | CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc |
| 71 | CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple |
| 72 | KBUILD_CPPFLAGS += -Iarch/$(ARCH) |
| 73 | KBUILD_AFLAGS += -Iarch/$(ARCH) |
| 74 | KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) |
| 75 | CPP = $(CC) -E $(KBUILD_CFLAGS) |
| 76 | |
| 77 | CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
| 78 | |
| 79 | ifeq ($(CONFIG_PPC64),y) |
| 80 | GCC_BROKEN_VEC := $(call cc-ifversion, -lt, 0400, y) |
| 81 | |
| 82 | ifeq ($(CONFIG_POWER4_ONLY),y) |
| 83 | ifeq ($(CONFIG_ALTIVEC),y) |
| 84 | ifeq ($(GCC_BROKEN_VEC),y) |
| 85 | KBUILD_CFLAGS += $(call cc-option,-mcpu=970) |
| 86 | else |
| 87 | KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) |
| 88 | endif |
| 89 | else |
| 90 | KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) |
| 91 | endif |
| 92 | else |
| 93 | KBUILD_CFLAGS += $(call cc-option,-mtune=power4) |
| 94 | endif |
| 95 | else |
| 96 | LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
| 97 | endif |
| 98 | |
| 99 | ifeq ($(CONFIG_TUNE_CELL),y) |
| 100 | KBUILD_CFLAGS += $(call cc-option,-mtune=cell) |
| 101 | endif |
| 102 | |
| 103 | # No AltiVec instruction when building kernel |
| 104 | KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
| 105 | |
| 106 | # No SPE instruction when building kernel |
| 107 | # (We use all available options to help semi-broken compilers) |
| 108 | KBUILD_CFLAGS += $(call cc-option,-mno-spe) |
| 109 | KBUILD_CFLAGS += $(call cc-option,-mspe=no) |
| 110 | |
| 111 | # Enable unit-at-a-time mode when possible. It shrinks the |
| 112 | # kernel considerably. |
| 113 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
| 114 | |
| 115 | # Never use string load/store instructions as they are |
| 116 | # often slow when they are implemented at all |
| 117 | KBUILD_CFLAGS += -mno-string |
| 118 | |
| 119 | ifeq ($(CONFIG_6xx),y) |
| 120 | KBUILD_CFLAGS += -mcpu=powerpc |
| 121 | endif |
| 122 | |
| 123 | # Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
| 124 | ifeq ($(CONFIG_FUNCTION_TRACER),y) |
| 125 | KBUILD_CFLAGS += -mno-sched-epilog |
| 126 | endif |
| 127 | |
| 128 | cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
| 129 | cpu-as-$(CONFIG_6xx) += -Wa,-maltivec |
| 130 | cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec |
| 131 | cpu-as-$(CONFIG_E500) += -Wa,-me500 |
| 132 | cpu-as-$(CONFIG_E200) += -Wa,-me200 |
| 133 | |
| 134 | KBUILD_AFLAGS += $(cpu-as-y) |
| 135 | KBUILD_CFLAGS += $(cpu-as-y) |
| 136 | |
| 137 | head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
| 138 | head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
| 139 | head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
| 140 | head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
| 141 | head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o |
| 142 | |
| 143 | head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
| 144 | head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
| 145 | head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o |
| 146 | |
| 147 | core-y += arch/powerpc/kernel/ \ |
| 148 | arch/powerpc/mm/ \ |
| 149 | arch/powerpc/lib/ \ |
| 150 | arch/powerpc/sysdev/ \ |
| 151 | arch/powerpc/platforms/ \ |
| 152 | arch/powerpc/math-emu/ |
| 153 | core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
| 154 | core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
| 155 | |
| 156 | drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ |
| 157 | |
| 158 | # Default to zImage, override when needed |
| 159 | all: zImage |
| 160 | |
| 161 | BOOT_TARGETS = zImage zImage.initrd uImage zImage% dtbImage% treeImage.% cuImage.% simpleImage.% |
| 162 | |
| 163 | PHONY += $(BOOT_TARGETS) |
| 164 | |
| 165 | boot := arch/$(ARCH)/boot |
| 166 | |
| 167 | ifeq ($(CONFIG_RELOCATABLE),y) |
| 168 | quiet_cmd_relocs_check = CALL $< |
| 169 | cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" |
| 170 | |
| 171 | PHONY += relocs_check |
| 172 | relocs_check: arch/powerpc/relocs_check.pl vmlinux |
| 173 | $(call cmd,relocs_check) |
| 174 | |
| 175 | zImage: relocs_check |
| 176 | endif |
| 177 | |
| 178 | $(BOOT_TARGETS): vmlinux |
| 179 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 180 | |
| 181 | bootwrapper_install %.dtb: |
| 182 | $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
| 183 | |
| 184 | define archhelp |
| 185 | @echo '* zImage - Build default images selected by kernel config' |
| 186 | @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' |
| 187 | @echo ' uImage - U-Boot native image format' |
| 188 | @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' |
| 189 | @echo ' versions which do not support device trees' |
| 190 | @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' |
| 191 | @echo ' simpleImage.<dt> - Firmware independent image.' |
| 192 | @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' |
| 193 | @echo ' install - Install kernel using' |
| 194 | @echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
| 195 | @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' |
| 196 | @echo ' install to $$(INSTALL_PATH) and run lilo' |
| 197 | @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
| 198 | @echo '' |
| 199 | @echo ' Targets with <dt> embed a device tree blob inside the image' |
| 200 | @echo ' These targets support board with firmware that does not' |
| 201 | @echo ' support passing a device tree directly. Replace <dt> with the' |
| 202 | @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' |
| 203 | @echo ' (minus the .dts extension).' |
| 204 | endef |
| 205 | |
| 206 | install: |
| 207 | $(Q)$(MAKE) $(build)=$(boot) install |
| 208 | |
| 209 | vdso_install: |
| 210 | ifeq ($(CONFIG_PPC64),y) |
| 211 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
| 212 | endif |
| 213 | $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ |
| 214 | |
| 215 | archclean: |
| 216 | $(Q)$(MAKE) $(clean)=$(boot) |
| 217 | |
| 218 | archprepare: checkbin |
| 219 | |
| 220 | # Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
| 221 | # to stdout and these checks are run even on install targets. |
| 222 | TOUT := .tmp_gas_check |
| 223 | # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec |
| 224 | # instructions. |
| 225 | # gcc-3.4 and binutils-2.14 are a fatal combination. |
| 226 | |
| 227 | checkbin: |
| 228 | @if test "$(call cc-version)" = "0304" ; then \ |
| 229 | if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
| 230 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ |
| 231 | echo 'correctly with gcc-3.4 and your version of binutils.'; \ |
| 232 | echo '*** Please upgrade your binutils or downgrade your gcc'; \ |
| 233 | false; \ |
| 234 | fi ; \ |
| 235 | fi |
| 236 | @if test "$(call cc-fullversion)" = "040200" \ |
| 237 | && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ |
| 238 | echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ |
| 239 | echo 'kernel with modules enabled.' ; \ |
| 240 | echo -n '*** Please use a different GCC version or ' ; \ |
| 241 | echo 'disable kernel modules' ; \ |
| 242 | false ; \ |
| 243 | fi |
| 244 | @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
| 245 | echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ |
| 246 | echo 'correctly with old versions of binutils.' ; \ |
| 247 | echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ |
| 248 | false ; \ |
| 249 | fi |
| 250 | |
| 251 | CLEAN_FILES += $(TOUT) |
| 252 | |