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Diffstat (limited to 'kernel/arch/powerpc/Makefile')
| -rw-r--r-- | kernel/arch/powerpc/Makefile | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/Makefile b/kernel/arch/powerpc/Makefile new file mode 100644 index 000000000..07a480861 --- /dev/null +++ b/kernel/arch/powerpc/Makefile @@ -0,0 +1,341 @@ +# This file is included by the global makefile so that you can add your own +# architecture-specific flags and dependencies. Remember to do have actions +# for "archclean" and "archdep" for cleaning up and making dependencies for +# this architecture. +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive +# for more details. +# +# Copyright (C) 1994 by Linus Torvalds +# Changes for PPC by Gary Thomas +# Rewritten by Cort Dougan and Paul Mackerras +# + +HAS_BIARCH := $(call cc-option-yn, -m32) + +# Set default 32 bits cross compilers for vdso and boot wrapper +CROSS32_COMPILE ?= + +CROSS32CC := $(CROSS32_COMPILE)gcc +CROSS32AR := $(CROSS32_COMPILE)ar + +ifeq ($(HAS_BIARCH),y) +ifeq ($(CROSS32_COMPILE),) +CROSS32CC := $(CC) -m32 +CROSS32AR := GNUTARGET=elf32-powerpc $(AR) +endif +endif + +export CROSS32CC CROSS32AR + +ifeq ($(CROSS_COMPILE),) +KBUILD_DEFCONFIG := $(shell uname -m)_defconfig +else +KBUILD_DEFCONFIG := ppc64_defconfig +endif + +ifeq ($(CONFIG_PPC64),y) +new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) + +ifeq ($(new_nm),y) +NM := $(NM) --synthetic +endif +endif + +ifeq ($(CONFIG_PPC64),y) +ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +OLDARCH := ppc64le +else +OLDARCH := ppc64 +endif +else +ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +OLDARCH := ppcle +else +OLDARCH := ppc +endif +endif + +# It seems there are times we use this Makefile without +# including the config file, but this replicates the old behaviour +ifeq ($(CONFIG_WORD_SIZE),) +CONFIG_WORD_SIZE := 32 +endif + +UTS_MACHINE := $(OLDARCH) + +ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +override CC += -mlittle-endian -mno-strict-align +override AS += -mlittle-endian +override LD += -EL +override CROSS32CC += -mlittle-endian +override CROSS32AS += -mlittle-endian +LDEMULATION := lppc +GNUTARGET := powerpcle +MULTIPLEWORD := -mno-multiple +KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect) +else +ifeq ($(call cc-option-yn,-mbig-endian),y) +override CC += -mbig-endian +override AS += -mbig-endian +endif +override LD += -EB +LDEMULATION := ppc +GNUTARGET := powerpc +MULTIPLEWORD := -mmultiple +endif + +ifeq ($(HAS_BIARCH),y) +override AS += -a$(CONFIG_WORD_SIZE) +override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION) +override CC += -m$(CONFIG_WORD_SIZE) +override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR) +endif + +LDFLAGS_vmlinux-y := -Bstatic +LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie +LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) + +ifeq ($(CONFIG_PPC64),y) +ifeq ($(call cc-option-yn,-mcmodel=medium),y) + # -mcmodel=medium breaks modules because it uses 32bit offsets from + # the TOC pointer to create pointers where possible. Pointers into the + # percpu data area are created by this method. + # + # The kernel module loader relocates the percpu data section from the + # original location (starting with 0xd...) to somewhere in the base + # kernel percpu data space (starting with 0xc...). We need a full + # 64bit relocation for this to work, hence -mcmodel=large. + KBUILD_CFLAGS_MODULE += -mcmodel=large +else + export NO_MINIMAL_TOC := -mno-minimal-toc +endif +endif + +CFLAGS-$(CONFIG_PPC64) := -mtraceback=no +ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,-mcall-aixdesc) +AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) +else +CFLAGS-$(CONFIG_PPC64) += -mcall-aixdesc +endif +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) +CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) + +ifeq ($(CONFIG_PPC_BOOK3S_64),y) +CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) +else +CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 +endif + +CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) +CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) +CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) +CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) +CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) +CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8) + +# Altivec option not allowed with e500mc64 in GCC. +ifeq ($(CONFIG_ALTIVEC),y) +E5500_CPU := -mcpu=powerpc64 +else +E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64) +endif +CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU) +CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU)) + +ifeq ($(CONFIG_PPC32),y) +ifeq ($(CONFIG_PPC_E500MC),y) +CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) +else +CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) +endif +endif + +CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) + +asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1) + +KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr) +KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y) +KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) +CPP = $(CC) -E $(KBUILD_CFLAGS) + +CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ + +KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o + +ifeq ($(CONFIG_476FPE_ERR46),y) + KBUILD_LDFLAGS_MODULE += --ppc476-workaround \ + -T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds +endif + +# No AltiVec or VSX instructions when building kernel +KBUILD_CFLAGS += $(call cc-option,-mno-altivec) +KBUILD_CFLAGS += $(call cc-option,-mno-vsx) + +# No SPE instruction when building kernel +# (We use all available options to help semi-broken compilers) +KBUILD_CFLAGS += $(call cc-option,-mno-spe) +KBUILD_CFLAGS += $(call cc-option,-mspe=no) + +# Enable unit-at-a-time mode when possible. It shrinks the +# kernel considerably. +KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) + +# FIXME: the module load should be taught about the additional relocs +# generated by this. +# revert to pre-gcc-4.4 behaviour of .eh_frame +KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) + +# Never use string load/store instructions as they are +# often slow when they are implemented at all +KBUILD_CFLAGS += -mno-string + +ifeq ($(CONFIG_6xx),y) +KBUILD_CFLAGS += -mcpu=powerpc +endif + +# Work around a gcc code-gen bug with -fno-omit-frame-pointer. +ifeq ($(CONFIG_FUNCTION_TRACER),y) +KBUILD_CFLAGS += -mno-sched-epilog +endif + +cpu-as-$(CONFIG_4xx) += -Wa,-m405 +cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec +cpu-as-$(CONFIG_E200) += -Wa,-me200 + +KBUILD_AFLAGS += $(cpu-as-y) +KBUILD_CFLAGS += $(cpu-as-y) + +head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o +head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o +head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o +head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o +head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o + +head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o +head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o +head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o +head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o + +core-y += arch/powerpc/kernel/ \ + arch/powerpc/mm/ \ + arch/powerpc/lib/ \ + arch/powerpc/sysdev/ \ + arch/powerpc/platforms/ \ + arch/powerpc/math-emu/ \ + arch/powerpc/crypto/ \ + arch/powerpc/net/ +core-$(CONFIG_XMON) += arch/powerpc/xmon/ +core-$(CONFIG_KVM) += arch/powerpc/kvm/ +core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ + +drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ + +# Default to zImage, override when needed +all: zImage + +# With make 3.82 we cannot mix normal and wildcard targets +BOOT_TARGETS1 := zImage zImage.initrd uImage +BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% + +PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) + +boot := arch/$(ARCH)/boot + +ifeq ($(CONFIG_RELOCATABLE),y) +quiet_cmd_relocs_check = CALL $< + cmd_relocs_check = $(CONFIG_SHELL) $< "$(OBJDUMP)" "$(obj)/vmlinux" + +PHONY += relocs_check +relocs_check: arch/powerpc/relocs_check.sh vmlinux + $(call cmd,relocs_check) + +zImage: relocs_check +endif + +$(BOOT_TARGETS1): vmlinux + $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) +$(BOOT_TARGETS2): vmlinux + $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + + +bootwrapper_install: + $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + +%.dtb: scripts + $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) + +define archhelp + @echo '* zImage - Build default images selected by kernel config' + @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' + @echo ' uImage - U-Boot native image format' + @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' + @echo ' versions which do not support device trees' + @echo ' dtbImage.<dt> - zImage with an embedded device tree blob' + @echo ' simpleImage.<dt> - Firmware independent image.' + @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' + @echo ' install - Install kernel using' + @echo ' (your) ~/bin/$(INSTALLKERNEL) or' + @echo ' (distribution) /sbin/$(INSTALLKERNEL) or' + @echo ' install to $$(INSTALL_PATH) and run lilo' + @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' + @echo '' + @echo ' Targets with <dt> embed a device tree blob inside the image' + @echo ' These targets support board with firmware that does not' + @echo ' support passing a device tree directly. Replace <dt> with the' + @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' + @echo ' (minus the .dts extension).' +endef + +install: + $(Q)$(MAKE) $(build)=$(boot) install + +vdso_install: +ifeq ($(CONFIG_PPC64),y) + $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ +endif + $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ + +archclean: + $(Q)$(MAKE) $(clean)=$(boot) + +archprepare: checkbin + +# Use the file '.tmp_gas_check' for binutils tests, as gas won't output +# to stdout and these checks are run even on install targets. +TOUT := .tmp_gas_check + +# Check gcc and binutils versions: +# - gcc-3.4 and binutils-2.14 are a fatal combination +# - Require gcc 4.0 or above on 64-bit +# - gcc-4.2.0 has issues compiling modules on 64-bit +checkbin: + @if test "$(cc-version)" = "0304" ; then \ + if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ + echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ + echo 'correctly with gcc-3.4 and your version of binutils.'; \ + echo '*** Please upgrade your binutils or downgrade your gcc'; \ + false; \ + fi ; \ + fi + @if test "$(cc-version)" -lt "0400" \ + && test "x${CONFIG_PPC64}" = "xy" ; then \ + echo -n "Sorry, GCC v4.0 or above is required to build " ; \ + echo "the 64-bit powerpc kernel." ; \ + false ; \ + fi + @if test "$(cc-fullversion)" = "040200" \ + && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ + echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ + echo 'kernel with modules enabled.' ; \ + echo -n '*** Please use a different GCC version or ' ; \ + echo 'disable kernel modules' ; \ + false ; \ + fi + +CLEAN_FILES += $(TOUT) + |