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-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple 72 73CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) 74CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) 75CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) 76CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) 77CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) 78CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) 79 80CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) 81 82KBUILD_CPPFLAGS += -Iarch/$(ARCH) 83KBUILD_AFLAGS += -Iarch/$(ARCH) 84KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) 85CPP = $(CC) -E $(KBUILD_CFLAGS) 86 87CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ 88 89KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o 90 91# No AltiVec or VSX instructions when building kernel 92KBUILD_CFLAGS += $(call cc-option,-mno-altivec) 93KBUILD_CFLAGS += $(call cc-option,-mno-vsx) 94 95# No SPE instruction when building kernel 96# (We use all available options to help semi-broken compilers) 97KBUILD_CFLAGS += $(call cc-option,-mno-spe) 98KBUILD_CFLAGS += $(call cc-option,-mspe=no) 99 100# Enable unit-at-a-time mode when possible. It shrinks the 101# kernel considerably. 102KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) 103 104# FIXME: the module load should be taught about the additional relocs 105# generated by this. 106# revert to pre-gcc-4.4 behaviour of .eh_frame 107KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 108 109# Never use string load/store instructions as they are 110# often slow when they are implemented at all 111KBUILD_CFLAGS += -mno-string 112 113ifeq ($(CONFIG_6xx),y) 114KBUILD_CFLAGS += -mcpu=powerpc 115endif 116 117# Work around a gcc code-gen bug with -fno-omit-frame-pointer. 118ifeq ($(CONFIG_FUNCTION_TRACER),y) 119KBUILD_CFLAGS += -mno-sched-epilog 120endif 121 122cpu-as-$(CONFIG_4xx) += -Wa,-m405 123cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec 124cpu-as-$(CONFIG_E500) += -Wa,-me500 125cpu-as-$(CONFIG_E200) += -Wa,-me200 126 127KBUILD_AFLAGS += $(cpu-as-y) 128KBUILD_CFLAGS += $(cpu-as-y) 129 130head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o 131head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o 132head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o 133head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o 134head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o 135 136head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o 137head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o 138head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o 139 140core-y += arch/powerpc/kernel/ \ 141 arch/powerpc/mm/ \ 142 arch/powerpc/lib/ \ 143 arch/powerpc/sysdev/ \ 144 arch/powerpc/platforms/ \ 145 arch/powerpc/math-emu/ \ 146 arch/powerpc/net/ 147core-$(CONFIG_XMON) += arch/powerpc/xmon/ 148core-$(CONFIG_KVM) += arch/powerpc/kvm/ 149core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ 150 151drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ 152 153# Default to zImage, override when needed 154all: zImage 155 156# With make 3.82 we cannot mix normal and wildcard targets 157BOOT_TARGETS1 := zImage zImage.initrd uImage 158BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% 159 160PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) 161 162boot := arch/$(ARCH)/boot 163 164ifeq ($(CONFIG_RELOCATABLE),y) 165quiet_cmd_relocs_check = CALL $< 166 cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" 167 168PHONY += relocs_check 169relocs_check: arch/powerpc/relocs_check.pl vmlinux 170 $(call cmd,relocs_check) 171 172zImage: relocs_check 173endif 174 175$(BOOT_TARGETS1): vmlinux 176 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 177$(BOOT_TARGETS2): vmlinux 178 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 179 180 181bootwrapper_install: 182 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 183 184%.dtb: scripts 185 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 186 187define archhelp 188 @echo '* zImage - Build default images selected by kernel config' 189 @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' 190 @echo ' uImage - U-Boot native image format' 191 @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' 192 @echo ' versions which do not support device trees' 193 @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' 194 @echo ' simpleImage.<dt> - Firmware independent image.' 195 @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' 196 @echo ' install - Install kernel using' 197 @echo ' (your) ~/bin/$(INSTALLKERNEL) or' 198 @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 199 @echo ' install to $$(INSTALL_PATH) and run lilo' 200 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' 201 @echo '' 202 @echo ' Targets with <dt> embed a device tree blob inside the image' 203 @echo ' These targets support board with firmware that does not' 204 @echo ' support passing a device tree directly. Replace <dt> with the' 205 @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' 206 @echo ' (minus the .dts extension).' 207endef 208 209install: 210 $(Q)$(MAKE) $(build)=$(boot) install 211 212vdso_install: 213ifeq ($(CONFIG_PPC64),y) 214 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ 215endif 216 $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ 217 218archclean: 219 $(Q)$(MAKE) $(clean)=$(boot) 220 221archprepare: checkbin 222 223# Use the file '.tmp_gas_check' for binutils tests, as gas won't output 224# to stdout and these checks are run even on install targets. 225TOUT := .tmp_gas_check 226 227# Check gcc and binutils versions: 228# - gcc-3.4 and binutils-2.14 are a fatal combination 229# - Require gcc 4.0 or above on 64-bit 230# - gcc-4.2.0 has issues compiling modules on 64-bit 231checkbin: 232 @if test "$(call cc-version)" = "0304" ; then \ 233 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ 234 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ 235 echo 'correctly with gcc-3.4 and your version of binutils.'; \ 236 echo '*** Please upgrade your binutils or downgrade your gcc'; \ 237 false; \ 238 fi ; \ 239 fi 240 @if test "$(call cc-version)" -lt "0400" \ 241 && test "x${CONFIG_PPC64}" = "xy" ; then \ 242 echo -n "Sorry, GCC v4.0 or above is required to build " ; \ 243 echo "the 64-bit powerpc kernel." ; \ 244 false ; \ 245 fi 246 @if test "$(call cc-fullversion)" = "040200" \ 247 && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ 248 echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ 249 echo 'kernel with modules enabled.' ; \ 250 echo -n '*** Please use a different GCC version or ' ; \ 251 echo 'disable kernel modules' ; \ 252 false ; \ 253 fi 254 255CLEAN_FILES += $(TOUT) 256 257