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393 lines
13 KiB
393 lines
13 KiB
# This file is included by the global makefile so that you can add your own |
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# architecture-specific flags and dependencies. Remember to do have actions |
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# for "archclean" and "archdep" for cleaning up and making dependencies for |
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# this architecture. |
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# |
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# This file is subject to the terms and conditions of the GNU General Public |
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# License. See the file "COPYING" in the main directory of this archive |
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# for more details. |
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# |
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# Copyright (C) 1994 by Linus Torvalds |
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# Changes for PPC by Gary Thomas |
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# Rewritten by Cort Dougan and Paul Mackerras |
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# |
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HAS_BIARCH := $(call cc-option-yn, -m32) |
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# Set default 32 bits cross compilers for vdso and boot wrapper |
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CROSS32_COMPILE ?= |
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CROSS32CC := $(CROSS32_COMPILE)gcc |
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CROSS32AR := $(CROSS32_COMPILE)ar |
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ifeq ($(HAS_BIARCH),y) |
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ifeq ($(CROSS32_COMPILE),) |
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CROSS32CC := $(CC) -m32 |
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CROSS32AR := GNUTARGET=elf32-powerpc $(AR) |
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endif |
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endif |
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export CROSS32CC CROSS32AR |
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ifeq ($(CROSS_COMPILE),) |
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KBUILD_DEFCONFIG := $(shell uname -m)_defconfig |
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else |
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KBUILD_DEFCONFIG := ppc64_defconfig |
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endif |
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ifeq ($(CONFIG_PPC64),y) |
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new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) |
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ifeq ($(new_nm),y) |
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NM := $(NM) --synthetic |
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endif |
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endif |
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ifeq ($(CONFIG_PPC64),y) |
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
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OLDARCH := ppc64le |
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else |
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OLDARCH := ppc64 |
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endif |
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else |
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
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OLDARCH := ppcle |
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else |
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OLDARCH := ppc |
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endif |
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endif |
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# It seems there are times we use this Makefile without |
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# including the config file, but this replicates the old behaviour |
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ifeq ($(CONFIG_WORD_SIZE),) |
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CONFIG_WORD_SIZE := 32 |
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endif |
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UTS_MACHINE := $(OLDARCH) |
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
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override CC += -mlittle-endian |
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ifneq ($(cc-name),clang) |
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override CC += -mno-strict-align |
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endif |
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override AS += -mlittle-endian |
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override LD += -EL |
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override CROSS32CC += -mlittle-endian |
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override CROSS32AS += -mlittle-endian |
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LDEMULATION := lppc |
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GNUTARGET := powerpcle |
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MULTIPLEWORD := -mno-multiple |
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KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect) |
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else |
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ifeq ($(call cc-option-yn,-mbig-endian),y) |
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override CC += -mbig-endian |
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override AS += -mbig-endian |
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endif |
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override LD += -EB |
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LDEMULATION := ppc |
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GNUTARGET := powerpc |
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MULTIPLEWORD := -mmultiple |
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endif |
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ifeq ($(HAS_BIARCH),y) |
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override AS += -a$(CONFIG_WORD_SIZE) |
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override LD += -m elf$(CONFIG_WORD_SIZE)$(LDEMULATION) |
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override CC += -m$(CONFIG_WORD_SIZE) |
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override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-$(GNUTARGET) $(AR) |
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endif |
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LDFLAGS_vmlinux-y := -Bstatic |
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LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie |
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LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) |
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ifeq ($(CONFIG_PPC64),y) |
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ifeq ($(call cc-option-yn,-mcmodel=medium),y) |
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# -mcmodel=medium breaks modules because it uses 32bit offsets from |
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# the TOC pointer to create pointers where possible. Pointers into the |
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# percpu data area are created by this method. |
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# |
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# The kernel module loader relocates the percpu data section from the |
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# original location (starting with 0xd...) to somewhere in the base |
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# kernel percpu data space (starting with 0xc...). We need a full |
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# 64bit relocation for this to work, hence -mcmodel=large. |
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KBUILD_CFLAGS_MODULE += -mcmodel=large |
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else |
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export NO_MINIMAL_TOC := -mno-minimal-toc |
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endif |
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endif |
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CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no) |
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) |
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) |
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) |
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else |
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc) |
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endif |
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc)) |
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) |
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CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) |
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ifeq ($(CONFIG_PPC_BOOK3S_64),y) |
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) |
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else |
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CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 |
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endif |
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CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) |
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CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) |
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CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) |
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CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) |
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CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) |
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CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8) |
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# Altivec option not allowed with e500mc64 in GCC. |
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ifeq ($(CONFIG_ALTIVEC),y) |
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E5500_CPU := -mcpu=powerpc64 |
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else |
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E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64) |
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endif |
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CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU) |
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CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU)) |
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ifeq ($(CONFIG_PPC32),y) |
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ifeq ($(CONFIG_PPC_E500MC),y) |
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CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc) |
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else |
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CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc) |
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endif |
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endif |
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asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1) |
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KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr) |
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KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y) |
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KBUILD_CFLAGS += $(call cc-option,-msoft-float) |
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KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y) |
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CPP = $(CC) -E $(KBUILD_CFLAGS) |
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CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ |
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KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o |
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ifeq ($(CONFIG_476FPE_ERR46),y) |
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KBUILD_LDFLAGS_MODULE += --ppc476-workaround \ |
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-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds |
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endif |
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# No AltiVec or VSX instructions when building kernel |
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KBUILD_CFLAGS += $(call cc-option,-mno-altivec) |
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KBUILD_CFLAGS += $(call cc-option,-mno-vsx) |
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# No SPE instruction when building kernel |
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# (We use all available options to help semi-broken compilers) |
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KBUILD_CFLAGS += $(call cc-option,-mno-spe) |
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KBUILD_CFLAGS += $(call cc-option,-mspe=no) |
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# Enable unit-at-a-time mode when possible. It shrinks the |
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# kernel considerably. |
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KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) |
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# FIXME: the module load should be taught about the additional relocs |
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# generated by this. |
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# revert to pre-gcc-4.4 behaviour of .eh_frame |
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KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) |
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# Never use string load/store instructions as they are |
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# often slow when they are implemented at all |
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KBUILD_CFLAGS += $(call cc-option,-mno-string) |
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ifeq ($(CONFIG_6xx),y) |
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KBUILD_CFLAGS += -mcpu=powerpc |
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endif |
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# Work around a gcc code-gen bug with -fno-omit-frame-pointer. |
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ifeq ($(CONFIG_FUNCTION_TRACER),y) |
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KBUILD_CFLAGS += -mno-sched-epilog |
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endif |
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cpu-as-$(CONFIG_4xx) += -Wa,-m405 |
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cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec |
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cpu-as-$(CONFIG_E200) += -Wa,-me200 |
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KBUILD_AFLAGS += $(cpu-as-y) |
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KBUILD_CFLAGS += $(cpu-as-y) |
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head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o |
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head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o |
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head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o |
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head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o |
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head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o |
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head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o |
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head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o |
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head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o |
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head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o |
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core-y += arch/powerpc/kernel/ \ |
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arch/powerpc/mm/ \ |
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arch/powerpc/lib/ \ |
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arch/powerpc/sysdev/ \ |
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arch/powerpc/platforms/ \ |
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arch/powerpc/math-emu/ \ |
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arch/powerpc/crypto/ \ |
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arch/powerpc/net/ |
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core-$(CONFIG_XMON) += arch/powerpc/xmon/ |
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core-$(CONFIG_KVM) += arch/powerpc/kvm/ |
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core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ |
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drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ |
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# Default to zImage, override when needed |
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all: zImage |
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# With make 3.82 we cannot mix normal and wildcard targets |
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BOOT_TARGETS1 := zImage zImage.initrd uImage |
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BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% |
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PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) |
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boot := arch/$(ARCH)/boot |
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ifeq ($(CONFIG_RELOCATABLE),y) |
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quiet_cmd_relocs_check = CALL $< |
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cmd_relocs_check = $(CONFIG_SHELL) $< "$(OBJDUMP)" "$(obj)/vmlinux" |
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PHONY += relocs_check |
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relocs_check: arch/powerpc/relocs_check.sh vmlinux |
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$(call cmd,relocs_check) |
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zImage: relocs_check |
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endif |
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$(BOOT_TARGETS1): vmlinux |
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$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
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$(BOOT_TARGETS2): vmlinux |
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$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
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bootwrapper_install: |
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$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
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%.dtb: scripts |
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$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) |
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# Used to create 'merged defconfigs' |
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# To use it $(call) it with the first argument as the base defconfig |
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# and the second argument as a space separated list of .config files to merge, |
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# without the .config suffix. |
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define merge_into_defconfig |
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ |
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-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \ |
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$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config) |
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+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig |
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endef |
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PHONY += pseries_le_defconfig |
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pseries_le_defconfig: |
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$(call merge_into_defconfig,pseries_defconfig,le) |
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PHONY += ppc64le_defconfig |
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ppc64le_defconfig: |
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$(call merge_into_defconfig,ppc64_defconfig,le) |
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PHONY += mpc85xx_defconfig |
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mpc85xx_defconfig: |
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$(call merge_into_defconfig,mpc85xx_basic_defconfig,\ |
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85xx-32bit 85xx-hw fsl-emb-nonhw) |
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PHONY += mpc85xx_smp_defconfig |
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mpc85xx_smp_defconfig: |
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$(call merge_into_defconfig,mpc85xx_basic_defconfig,\ |
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85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw) |
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PHONY += corenet32_smp_defconfig |
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corenet32_smp_defconfig: |
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$(call merge_into_defconfig,corenet_basic_defconfig,\ |
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85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw) |
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PHONY += corenet64_smp_defconfig |
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corenet64_smp_defconfig: |
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$(call merge_into_defconfig,corenet_basic_defconfig,\ |
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85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw) |
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define archhelp |
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@echo '* zImage - Build default images selected by kernel config' |
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@echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' |
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@echo ' uImage - U-Boot native image format' |
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@echo ' cuImage.<dt> - Backwards compatible U-Boot image for older' |
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@echo ' versions which do not support device trees' |
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@echo ' dtbImage.<dt> - zImage with an embedded device tree blob' |
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@echo ' simpleImage.<dt> - Firmware independent image.' |
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@echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)' |
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@echo ' install - Install kernel using' |
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@echo ' (your) ~/bin/$(INSTALLKERNEL) or' |
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@echo ' (distribution) /sbin/$(INSTALLKERNEL) or' |
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@echo ' install to $$(INSTALL_PATH) and run lilo' |
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@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' |
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@echo '' |
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@echo ' Targets with <dt> embed a device tree blob inside the image' |
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@echo ' These targets support board with firmware that does not' |
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@echo ' support passing a device tree directly. Replace <dt> with the' |
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@echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory' |
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@echo ' (minus the .dts extension).' |
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endef |
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install: |
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$(Q)$(MAKE) $(build)=$(boot) install |
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vdso_install: |
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ifeq ($(CONFIG_PPC64),y) |
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$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@ |
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endif |
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$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@ |
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archclean: |
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$(Q)$(MAKE) $(clean)=$(boot) |
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archprepare: checkbin |
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# Use the file '.tmp_gas_check' for binutils tests, as gas won't output |
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# to stdout and these checks are run even on install targets. |
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TOUT := .tmp_gas_check |
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# Check gcc and binutils versions: |
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# - gcc-3.4 and binutils-2.14 are a fatal combination |
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# - Require gcc 4.0 or above on 64-bit |
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# - gcc-4.2.0 has issues compiling modules on 64-bit |
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checkbin: |
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@if test "$(cc-name)" != "clang" \ |
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&& test "$(cc-version)" = "0304" ; then \ |
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if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ |
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echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ |
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echo 'correctly with gcc-3.4 and your version of binutils.'; \ |
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echo '*** Please upgrade your binutils or downgrade your gcc'; \ |
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false; \ |
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fi ; \ |
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fi |
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@if test "$(cc-name)" != "clang" \ |
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&& test "$(cc-version)" -lt "0400" \ |
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&& test "x${CONFIG_PPC64}" = "xy" ; then \ |
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echo -n "Sorry, GCC v4.0 or above is required to build " ; \ |
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echo "the 64-bit powerpc kernel." ; \ |
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false ; \ |
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fi |
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@if test "$(cc-name)" != "clang" \ |
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&& test "$(cc-fullversion)" = "040200" \ |
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&& test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ |
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echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ |
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echo 'kernel with modules enabled.' ; \ |
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echo -n '*** Please use a different GCC version or ' ; \ |
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echo 'disable kernel modules' ; \ |
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false ; \ |
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fi |
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@if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \ |
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&& $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \ |
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echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \ |
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echo 'in some circumstances.' ; \ |
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echo -n '*** Please use a different binutils version.' ; \ |
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false ; \ |
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fi |
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CLEAN_FILES += $(TOUT) |
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