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 15HAS_BIARCH := $(call cc-option-yn, -m32) 16 17# Set default 32 bits cross compilers for vdso and boot wrapper 18CROSS32_COMPILE ?= 19 20CROSS32CC := $(CROSS32_COMPILE)gcc 21CROSS32AR := $(CROSS32_COMPILE)ar 22 23ifeq ($(HAS_BIARCH),y) 24ifeq ($(CROSS32_COMPILE),) 25CROSS32CC := $(CC) -m32 26CROSS32AR := GNUTARGET=elf32-powerpc $(AR) 27endif 28endif 29 30export CROSS32CC CROSS32AR 31 32ifeq ($(CROSS_COMPILE),) 33KBUILD_DEFCONFIG := $(shell uname -m)_defconfig 34else 35KBUILD_DEFCONFIG := ppc64_defconfig 36endif 37 38ifeq ($(CONFIG_PPC64),y) 39OLDARCH := ppc64 40 41new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) 42 43ifeq ($(new_nm),y) 44NM := $(NM) --synthetic 45endif 46 47else 48OLDARCH := ppc 49endif 50 51# It seems there are times we use this Makefile without 52# including the config file, but this replicates the old behaviour 53ifeq ($(CONFIG_WORD_SIZE),) 54CONFIG_WORD_SIZE := 32 55endif 56 57UTS_MACHINE := $(OLDARCH) 58 59ifeq ($(HAS_BIARCH),y) 60override AS += -a$(CONFIG_WORD_SIZE) 61override LD += -m elf$(CONFIG_WORD_SIZE)ppc 62override CC += -m$(CONFIG_WORD_SIZE) 63override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR) 64endif 65 66LDFLAGS_vmlinux-y := -Bstatic 67LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie 68LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) 69 70CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=no -mcall-aixdesc 71CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple 72KBUILD_CPPFLAGS += -Iarch/$(ARCH) 73KBUILD_AFLAGS += -Iarch/$(ARCH) 74KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) 75CPP = $(CC) -E $(KBUILD_CFLAGS) 76 77CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ 78 79ifeq ($(CONFIG_PPC64),y) 80GCC_BROKEN_VEC := $(call cc-ifversion, -lt, 0400, y) 81 82ifeq ($(CONFIG_POWER4_ONLY),y) 83ifeq ($(CONFIG_ALTIVEC),y) 84ifeq ($(GCC_BROKEN_VEC),y) 85 KBUILD_CFLAGS += $(call cc-option,-mcpu=970) 86else 87 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) 88endif 89else 90 KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) 91endif 92else 93 KBUILD_CFLAGS += $(call cc-option,-mtune=power4) 94endif 95endif 96 97KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o 98 99ifeq ($(CONFIG_TUNE_CELL),y) 100 KBUILD_CFLAGS += $(call cc-option,-mtune=cell) 101endif 102 103# No AltiVec instruction when building kernel 104KBUILD_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) 108KBUILD_CFLAGS += $(call cc-option,-mno-spe) 109KBUILD_CFLAGS += $(call cc-option,-mspe=no) 110 111# Enable unit-at-a-time mode when possible. It shrinks the 112# kernel considerably. 113KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) 114 115# FIXME: the module load should be taught about the additional relocs 116# generated by this. 117# revert to pre-gcc-4.4 behaviour of .eh_frame 118KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 119 120# Never use string load/store instructions as they are 121# often slow when they are implemented at all 122KBUILD_CFLAGS += -mno-string 123 124ifeq ($(CONFIG_6xx),y) 125KBUILD_CFLAGS += -mcpu=powerpc 126endif 127 128# Work around a gcc code-gen bug with -fno-omit-frame-pointer. 129ifeq ($(CONFIG_FUNCTION_TRACER),y) 130KBUILD_CFLAGS += -mno-sched-epilog 131endif 132 133cpu-as-$(CONFIG_4xx) += -Wa,-m405 134cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec 135cpu-as-$(CONFIG_E500) += -Wa,-me500 136cpu-as-$(CONFIG_E200) += -Wa,-me200 137 138KBUILD_AFLAGS += $(cpu-as-y) 139KBUILD_CFLAGS += $(cpu-as-y) 140 141head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o 142head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o 143head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o 144head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o 145head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o 146 147head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o 148head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o 149head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o 150 151core-y += arch/powerpc/kernel/ \ 152 arch/powerpc/mm/ \ 153 arch/powerpc/lib/ \ 154 arch/powerpc/sysdev/ \ 155 arch/powerpc/platforms/ \ 156 arch/powerpc/math-emu/ \ 157 arch/powerpc/net/ 158core-$(CONFIG_XMON) += arch/powerpc/xmon/ 159core-$(CONFIG_KVM) += arch/powerpc/kvm/ 160core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ 161 162drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ 163 164# Default to zImage, override when needed 165all: zImage 166 167# With make 3.82 we cannot mix normal and wildcard targets 168BOOT_TARGETS1 := zImage zImage.initrd uImage 169BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% 170 171PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) 172 173boot := arch/$(ARCH)/boot 174 175ifeq ($(CONFIG_RELOCATABLE),y) 176quiet_cmd_relocs_check = CALL $< 177 cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" 178 179PHONY += relocs_check 180relocs_check: arch/powerpc/relocs_check.pl vmlinux 181 $(call cmd,relocs_check) 182 183zImage: relocs_check 184endif 185 186$(BOOT_TARGETS1): vmlinux 187 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 188$(BOOT_TARGETS2): vmlinux 189 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 190 191 192bootwrapper_install: 193 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 194 195%.dtb: 196 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 197 198define archhelp 199 @echo '* zImage - Build default images selected by kernel config' 200 @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' 201 @echo ' uImage - U-Boot native image format' 202 @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' 203 @echo ' versions which do not support device trees' 204 @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' 205 @echo ' simpleImage.<dt> - Firmware independent image.' 206 @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' 207 @echo ' install - Install kernel using' 208 @echo ' (your) ~/bin/$(INSTALLKERNEL) or' 209 @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 210 @echo ' install to $$(INSTALL_PATH) and run lilo' 211 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' 212 @echo '' 213 @echo ' Targets with <dt> embed a device tree blob inside the image' 214 @echo ' These targets support board with firmware that does not' 215 @echo ' support passing a device tree directly. Replace <dt> with the' 216 @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' 217 @echo ' (minus the .dts extension).' 218endef 219 220install: 221 $(Q)$(MAKE) $(build)=$(boot) install 222 223vdso_install: 224ifeq ($(CONFIG_PPC64),y) 225 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 226endif 227 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 228 229archclean: 230 $(Q)$(MAKE) $(clean)=$(boot) 231 232archprepare: checkbin 233 234# Use the file '.tmp_gas_check' for binutils tests, as gas won't output 235# to stdout and these checks are run even on install targets. 236TOUT := .tmp_gas_check 237# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec 238# instructions. 239# gcc-3.4 and binutils-2.14 are a fatal combination. 240 241checkbin: 242 @if test "$(call cc-version)" = "0304" ; then \ 243 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ 244 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ 245 echo 'correctly with gcc-3.4 and your version of binutils.'; \ 246 echo '*** Please upgrade your binutils or downgrade your gcc'; \ 247 false; \ 248 fi ; \ 249 fi 250 @if test "$(call cc-fullversion)" = "040200" \ 251 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ 252 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ 253 echo 'kernel with modules enabled.' ; \ 254 echo -n '*** Please use a different GCC version or ' ; \ 255 echo 'disable kernel modules' ; \ 256 false ; \ 257 fi 258 259CLEAN_FILES += $(TOUT) 260 261