forked from luck/tmp_suning_uos_patched
5631d9c429
We cannot detect clang before including the arch Makefile, because that can set the default cross compiler. We also cannot detect clang after including the arch Makefile, because powerpc wants to know about clang. Solve this by using an deferred variable. This costs us a few shell invocations, but this is only a constant number. Reported-by: Behan Webster <behanw@converseincode.com> Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michal Marek <mmarek@suse.com>
372 lines
12 KiB
Makefile
372 lines
12 KiB
Makefile
# 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) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
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endif
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endif
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CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
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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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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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