2005-09-26 00:04:21 -06:00
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# 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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2006-09-27 06:47:03 -06:00
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CROSS32AR := $(CROSS32_COMPILE)ar
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2005-09-26 00:04:21 -06:00
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ifeq ($(HAS_BIARCH),y)
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ifeq ($(CROSS32_COMPILE),)
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CROSS32CC := $(CC) -m32
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2016-10-18 21:15:59 -06:00
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KBUILD_ARFLAGS += --target=elf32-powerpc
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2005-09-26 00:04:21 -06:00
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endif
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endif
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2008-06-07 17:42:52 -06:00
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export CROSS32CC CROSS32AR
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2005-09-26 00:04:21 -06:00
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2007-10-02 14:30:09 -06:00
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ifeq ($(CROSS_COMPILE),)
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2005-11-17 22:39:08 -07:00
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KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
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2007-10-02 14:30:09 -06:00
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else
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KBUILD_DEFCONFIG := ppc64_defconfig
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endif
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2005-11-17 22:39:08 -07:00
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2005-11-15 19:38:21 -07:00
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ifeq ($(CONFIG_PPC64),y)
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2005-09-26 00:04:21 -06:00
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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 := $(NM) --synthetic
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endif
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2013-09-22 20:04:53 -06:00
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endif
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2005-09-26 00:04:21 -06:00
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2016-08-11 00:03:14 -06:00
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# BITS is used as extension for files which are available in a 32 bit
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# and a 64 bit version to simplify shared Makefiles.
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# e.g.: obj-y += foo_$(BITS).o
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export BITS
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ifdef CONFIG_PPC64
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BITS := 64
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else
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BITS := 32
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2005-09-26 00:04:21 -06:00
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endif
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2016-08-11 00:03:15 -06:00
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machine-y = ppc
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machine-$(CONFIG_PPC64) += 64
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machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
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UTS_MACHINE := $(subst $(space),,$(machine-y))
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2005-10-13 00:14:15 -06:00
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2017-07-25 23:00:42 -06:00
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# XXX This needs to be before we override LD below
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ifdef CONFIG_PPC32
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KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
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else
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powerpc/modules: Fix alignment of .toc section in kernel modules
powerpc64 gcc can generate code that offsets an address, to access
part of an object in memory. If the address is a -mcmodel=medium toc
pointer relative address then code like the following is possible.
addis r9,r2,var@toc@ha
ld r3,var@toc@l(r9)
ld r4,(var+8)@toc@l(r9)
This works fine so long as var is naturally aligned, *and* r2 is
sufficiently aligned. If not, there is a possibility that the offset
added to access var+8 wraps over a n*64k+32k boundary. Modules don't
have any guarantee that r2 is sufficiently aligned. Moreover, code
generated by older compilers generates a .toc section with 2**0
alignment, which can result in relocation failures at module load time
even without the wrap problem.
Thus, this patch links modules with an aligned .toc section (Makefile
and module.lds changes), and forces alignment for out of tree modules
or those without a .toc section (module_64.c changes).
Signed-off-by: Alan Modra <amodra@gmail.com>
[desnesn: updated patch to apply to powerpc-next kernel v4.15 ]
Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.vnet.ibm.com>
[mpe: Fix out-of-tree build, swap -256 for ~0xff, reflow comment]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-12-06 12:12:28 -07:00
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KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/powerpc/kernel/module.lds
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2017-07-25 23:00:42 -06:00
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ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
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# Have the linker provide sfpr if possible.
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# There is a corresponding test in arch/powerpc/lib/Makefile
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KBUILD_LDFLAGS_MODULE += --save-restore-funcs
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else
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KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
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endif
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endif
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2013-09-22 20:05:11 -06:00
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
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override LD += -EL
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LDEMULATION := lppc
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GNUTARGET := powerpcle
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MULTIPLEWORD := -mno-multiple
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2014-03-11 22:12:01 -06:00
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KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
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2013-09-22 20:05:11 -06:00
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else
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override LD += -EB
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LDEMULATION := ppc
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GNUTARGET := powerpc
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MULTIPLEWORD := -mmultiple
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endif
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2016-11-26 19:46:20 -07:00
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ifdef CONFIG_PPC64
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc)
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aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2
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endif
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2016-08-09 06:43:46 -06:00
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
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2016-11-26 19:46:20 -07:00
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
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2016-08-09 06:43:46 -06:00
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ifneq ($(cc-name),clang)
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align
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endif
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aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
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aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
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2005-09-26 00:04:21 -06:00
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ifeq ($(HAS_BIARCH),y)
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2016-08-11 00:03:14 -06:00
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override AS += -a$(BITS)
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override LD += -m elf$(BITS)$(LDEMULATION)
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override CC += -m$(BITS)
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2016-10-18 21:15:59 -06:00
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KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET)
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2005-09-26 00:04:21 -06:00
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endif
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2011-12-14 15:58:12 -07:00
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LDFLAGS_vmlinux-y := -Bstatic
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LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
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LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
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2017-05-11 11:40:40 -06:00
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LDFLAGS_vmlinux += $(call ld-option,--orphan-handling=warn)
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2005-09-26 00:04:21 -06:00
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2012-11-26 10:41:08 -07:00
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ifeq ($(CONFIG_PPC64),y)
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ifeq ($(call cc-option-yn,-mcmodel=medium),y)
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# -mcmodel=medium breaks modules because it uses 32bit offsets from
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# the TOC pointer to create pointers where possible. Pointers into the
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# percpu data area are created by this method.
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#
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# The kernel module loader relocates the percpu data section from the
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# original location (starting with 0xd...) to somewhere in the base
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# kernel percpu data space (starting with 0xc...). We need a full
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# 64bit relocation for this to work, hence -mcmodel=large.
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KBUILD_CFLAGS_MODULE += -mcmodel=large
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else
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export NO_MINIMAL_TOC := -mno-minimal-toc
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endif
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endif
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2015-05-25 16:53:27 -06:00
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CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
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2014-03-10 04:06:12 -06:00
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
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2015-05-25 16:53:29 -06:00
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
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2014-03-10 04:06:12 -06:00
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
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else
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2016-11-26 19:46:20 -07:00
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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2015-05-25 16:53:29 -06:00
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
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2016-11-26 19:46:20 -07:00
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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2014-03-10 04:06:12 -06:00
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endif
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2015-05-25 16:53:29 -06:00
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
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2012-12-12 07:43:12 -07:00
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
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2018-02-28 18:02:49 -07:00
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2013-09-22 20:05:11 -06:00
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CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD)
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2018-02-28 18:02:49 -07:00
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CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata)
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2012-04-17 12:45:28 -06:00
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2013-08-20 18:55:36 -06:00
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ifeq ($(CONFIG_PPC_BOOK3S_64),y)
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2018-02-20 12:08:30 -07:00
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ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
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CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8
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2018-02-20 12:08:32 -07:00
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8)
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2018-02-20 12:08:30 -07:00
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else
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2018-02-20 12:08:29 -07:00
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5))
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CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4)
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2018-02-20 12:08:30 -07:00
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endif
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2013-08-20 18:55:36 -06:00
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else
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CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
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endif
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2016-03-02 21:27:00 -07:00
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ifdef CONFIG_MPROFILE_KERNEL
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2016-11-25 20:26:10 -07:00
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ifeq ($(shell $(srctree)/arch/powerpc/tools/gcc-check-mprofile-kernel.sh $(CC) -I$(srctree)/include -D__KERNEL__),OK)
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2016-03-02 21:27:00 -07:00
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CC_FLAGS_FTRACE := -pg -mprofile-kernel
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KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL
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else
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# If the user asked for mprofile-kernel but the toolchain doesn't
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# support it, emit a warning and deliberately break the build later
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# with mprofile-kernel-not-supported. We would prefer to make this an
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# error right here, but then the user would never be able to run
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# oldconfig to change their configuration.
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$(warning Compiler does not support mprofile-kernel, set CONFIG_DISABLE_MPROFILE_KERNEL)
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CC_FLAGS_FTRACE := -mprofile-kernel-not-supported
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endif
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endif
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2012-04-17 12:45:28 -06:00
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CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
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CFLAGS-$(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) += $(call cc-option,-mcpu=power7)
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2014-09-15 18:47:49 -06:00
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CFLAGS-$(CONFIG_POWER8_CPU) += $(call cc-option,-mcpu=power8)
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2018-02-20 12:08:32 -07:00
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CFLAGS-$(CONFIG_POWER9_CPU) += $(call cc-option,-mcpu=power9)
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2012-04-17 12:45:28 -06:00
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2013-11-21 19:49:00 -07:00
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# Altivec option not allowed with e500mc64 in GCC.
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ifeq ($(CONFIG_ALTIVEC),y)
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E5500_CPU := -mcpu=powerpc64
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else
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2013-08-20 18:55:36 -06:00
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E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
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2013-11-21 19:49:00 -07:00
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endif
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2013-08-20 18:55:36 -06:00
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CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
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CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
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2013-08-15 18:19:10 -06:00
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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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2014-05-15 10:33:42 -06:00
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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) $(asinstr)
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2014-04-22 18:02:04 -06:00
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KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y)
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2015-05-25 16:53:27 -06:00
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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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2007-10-14 14:21:35 -06:00
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CPP = $(CC) -E $(KBUILD_CFLAGS)
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2005-09-26 00:04:21 -06:00
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2016-08-11 00:03:14 -06:00
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CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
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2016-07-11 18:54:51 -06:00
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ifdef CONFIG_CPU_BIG_ENDIAN
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CHECKFLAGS += -D__BIG_ENDIAN__
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else
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CHECKFLAGS += -D__LITTLE_ENDIAN__
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endif
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2005-09-26 00:04:21 -06:00
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2014-02-24 00:00:56 -07:00
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ifeq ($(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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|
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endif
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2012-04-17 12:45:28 -06:00
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# No AltiVec or VSX instructions when building kernel
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2007-10-14 14:21:35 -06:00
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KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
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2012-04-17 12:45:28 -06:00
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KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
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2005-10-28 23:31:17 -06:00
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2007-10-18 15:53:19 -06:00
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# No SPE instruction when building kernel
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2008-09-01 08:23:02 -06:00
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# (We use all available options to help semi-broken compilers)
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2007-10-18 15:53:19 -06:00
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KBUILD_CFLAGS += $(call cc-option,-mno-spe)
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2008-09-01 08:23:02 -06:00
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KBUILD_CFLAGS += $(call cc-option,-mspe=no)
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2007-10-18 15:53:19 -06:00
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2005-09-26 00:04:21 -06:00
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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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2007-10-14 14:21:35 -06:00
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KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
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2005-09-26 00:04:21 -06:00
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2010-02-02 15:40:02 -07:00
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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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|
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KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
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2007-03-22 00:23:44 -06:00
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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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2015-05-25 16:53:27 -06:00
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|
KBUILD_CFLAGS += $(call cc-option,-mno-string)
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2005-09-26 00:04:21 -06:00
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2006-04-11 12:42:08 -06:00
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|
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ifeq ($(CONFIG_6xx),y)
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2007-10-14 14:21:35 -06:00
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|
KBUILD_CFLAGS += -mcpu=powerpc
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2006-04-11 12:42:08 -06:00
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|
endif
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|
2008-09-02 00:50:38 -06:00
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|
# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
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2008-10-06 17:06:12 -06:00
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|
|
ifeq ($(CONFIG_FUNCTION_TRACER),y)
|
2008-09-02 00:50:38 -06:00
|
|
|
KBUILD_CFLAGS += -mno-sched-epilog
|
|
|
|
endif
|
|
|
|
|
2005-09-26 00:04:21 -06:00
|
|
|
cpu-as-$(CONFIG_4xx) += -Wa,-m405
|
2015-11-25 16:45:49 -07:00
|
|
|
cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
|
2005-09-26 00:04:21 -06:00
|
|
|
cpu-as-$(CONFIG_E200) += -Wa,-me200
|
2018-02-20 12:08:26 -07:00
|
|
|
cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2007-10-15 13:59:31 -06:00
|
|
|
KBUILD_AFLAGS += $(cpu-as-y)
|
2007-10-14 14:21:35 -06:00
|
|
|
KBUILD_CFLAGS += $(cpu-as-y)
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2016-08-09 06:43:46 -06:00
|
|
|
KBUILD_AFLAGS += $(aflags-y)
|
|
|
|
KBUILD_CFLAGS += $(cflags-y)
|
|
|
|
|
2016-08-11 00:03:14 -06:00
|
|
|
head-y := arch/powerpc/kernel/head_$(BITS).o
|
2017-08-08 05:58:54 -06:00
|
|
|
head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
|
2007-08-20 06:27:07 -06:00
|
|
|
head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
|
2005-09-26 00:04:21 -06:00
|
|
|
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
|
|
|
|
head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
|
|
|
|
|
2005-10-10 06:36:14 -06:00
|
|
|
head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
|
2005-09-26 00:04:21 -06:00
|
|
|
head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
|
2009-06-02 15:17:37 -06:00
|
|
|
head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
|
2012-11-26 10:39:03 -07:00
|
|
|
head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2005-10-10 06:25:26 -06:00
|
|
|
core-y += arch/powerpc/kernel/ \
|
|
|
|
arch/powerpc/mm/ \
|
|
|
|
arch/powerpc/lib/ \
|
|
|
|
arch/powerpc/sysdev/ \
|
2009-03-09 21:09:49 -06:00
|
|
|
arch/powerpc/platforms/ \
|
2011-07-20 09:51:00 -06:00
|
|
|
arch/powerpc/math-emu/ \
|
2012-09-13 17:00:49 -06:00
|
|
|
arch/powerpc/crypto/ \
|
2011-07-20 09:51:00 -06:00
|
|
|
arch/powerpc/net/
|
2005-10-28 06:53:37 -06:00
|
|
|
core-$(CONFIG_XMON) += arch/powerpc/xmon/
|
2008-04-16 22:28:09 -06:00
|
|
|
core-$(CONFIG_KVM) += arch/powerpc/kvm/
|
2012-02-20 10:02:09 -07:00
|
|
|
core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/
|
2016-11-29 05:45:52 -07:00
|
|
|
core-$(CONFIG_KEXEC_FILE) += arch/powerpc/purgatory/
|
2005-09-26 00:04:21 -06:00
|
|
|
|
|
|
|
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
|
|
|
|
|
2006-01-12 16:55:58 -07:00
|
|
|
# Default to zImage, override when needed
|
2008-02-06 11:18:34 -07:00
|
|
|
all: zImage
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2010-08-02 14:47:48 -06:00
|
|
|
# With make 3.82 we cannot mix normal and wildcard targets
|
2010-08-15 16:26:56 -06:00
|
|
|
BOOT_TARGETS1 := zImage zImage.initrd uImage
|
2011-12-01 12:35:08 -07:00
|
|
|
BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
|
2005-09-30 00:16:52 -06:00
|
|
|
|
2010-08-02 14:47:48 -06:00
|
|
|
PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
|
2005-09-30 00:16:52 -06:00
|
|
|
|
2005-11-15 19:38:21 -07:00
|
|
|
boot := arch/$(ARCH)/boot
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2010-08-02 14:47:48 -06:00
|
|
|
$(BOOT_TARGETS1): vmlinux
|
powerpc: Stop passing ARCH=ppc64 to boot Makefile
Back in 2005 when the ppc/ppc64 merge started, we used to build the
kernel code in arch/powerpc but use the boot code from arch/ppc or
arch/ppc64 depending on whether we were building for 32 or 64-bit.
Originally we called the boot Makefile passing ARCH=$(OLDARCH), where
OLDARCH was ppc or ppc64.
In commit 20f629549b30 ("powerpc: Make building the boot image work for
both 32-bit and 64-bit") (2005-10-11) we split the call for 32/64-bit
using an ifeq check, because the two Makefiles took different targets,
and explicitly passed ARCH=ppc64 for the 64-bit case and ARCH=ppc for
the 32-bit case.
Then in commit 94b212c29f68 ("powerpc: Move ppc64 boot wrapper code over
to arch/powerpc") (2005-11-16) we moved the boot code into arch/powerpc
and dropped the ppc case, but kept passing ARCH=ppc64 to
arch/powerpc/boot/Makefile.
Since then there have been several more boot targets added, all of which
have copied the ARCH=ppc64 setting, such that now we have four targets
using it.
Currently it seems that nothing actually uses the ARCH value, but that's
basically just luck, and in particular it prevents us from using the
generic cpp_lds_S rule. It's also clearly wrong, ARCH=ppc64 is dead,
buried and cremated.
Fix it by dropping the setting of ARCH completely, the correct value is
exported by the top level Makefile.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-21 03:14:33 -07:00
|
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
2010-08-02 14:47:48 -06:00
|
|
|
$(BOOT_TARGETS2): vmlinux
|
powerpc: Stop passing ARCH=ppc64 to boot Makefile
Back in 2005 when the ppc/ppc64 merge started, we used to build the
kernel code in arch/powerpc but use the boot code from arch/ppc or
arch/ppc64 depending on whether we were building for 32 or 64-bit.
Originally we called the boot Makefile passing ARCH=$(OLDARCH), where
OLDARCH was ppc or ppc64.
In commit 20f629549b30 ("powerpc: Make building the boot image work for
both 32-bit and 64-bit") (2005-10-11) we split the call for 32/64-bit
using an ifeq check, because the two Makefiles took different targets,
and explicitly passed ARCH=ppc64 for the 64-bit case and ARCH=ppc for
the 32-bit case.
Then in commit 94b212c29f68 ("powerpc: Move ppc64 boot wrapper code over
to arch/powerpc") (2005-11-16) we moved the boot code into arch/powerpc
and dropped the ppc case, but kept passing ARCH=ppc64 to
arch/powerpc/boot/Makefile.
Since then there have been several more boot targets added, all of which
have copied the ARCH=ppc64 setting, such that now we have four targets
using it.
Currently it seems that nothing actually uses the ARCH value, but that's
basically just luck, and in particular it prevents us from using the
generic cpp_lds_S rule. It's also clearly wrong, ARCH=ppc64 is dead,
buried and cremated.
Fix it by dropping the setting of ARCH completely, the correct value is
exported by the top level Makefile.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-21 03:14:33 -07:00
|
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
2010-08-02 14:47:48 -06:00
|
|
|
|
|
|
|
|
|
|
|
bootwrapper_install:
|
powerpc: Stop passing ARCH=ppc64 to boot Makefile
Back in 2005 when the ppc/ppc64 merge started, we used to build the
kernel code in arch/powerpc but use the boot code from arch/ppc or
arch/ppc64 depending on whether we were building for 32 or 64-bit.
Originally we called the boot Makefile passing ARCH=$(OLDARCH), where
OLDARCH was ppc or ppc64.
In commit 20f629549b30 ("powerpc: Make building the boot image work for
both 32-bit and 64-bit") (2005-10-11) we split the call for 32/64-bit
using an ifeq check, because the two Makefiles took different targets,
and explicitly passed ARCH=ppc64 for the 64-bit case and ARCH=ppc for
the 32-bit case.
Then in commit 94b212c29f68 ("powerpc: Move ppc64 boot wrapper code over
to arch/powerpc") (2005-11-16) we moved the boot code into arch/powerpc
and dropped the ppc case, but kept passing ARCH=ppc64 to
arch/powerpc/boot/Makefile.
Since then there have been several more boot targets added, all of which
have copied the ARCH=ppc64 setting, such that now we have four targets
using it.
Currently it seems that nothing actually uses the ARCH value, but that's
basically just luck, and in particular it prevents us from using the
generic cpp_lds_S rule. It's also clearly wrong, ARCH=ppc64 is dead,
buried and cremated.
Fix it by dropping the setting of ARCH completely, the correct value is
exported by the top level Makefile.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-21 03:14:33 -07:00
|
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
2007-12-02 19:56:58 -07:00
|
|
|
|
2012-09-18 03:50:55 -06:00
|
|
|
%.dtb: scripts
|
powerpc: Stop passing ARCH=ppc64 to boot Makefile
Back in 2005 when the ppc/ppc64 merge started, we used to build the
kernel code in arch/powerpc but use the boot code from arch/ppc or
arch/ppc64 depending on whether we were building for 32 or 64-bit.
Originally we called the boot Makefile passing ARCH=$(OLDARCH), where
OLDARCH was ppc or ppc64.
In commit 20f629549b30 ("powerpc: Make building the boot image work for
both 32-bit and 64-bit") (2005-10-11) we split the call for 32/64-bit
using an ifeq check, because the two Makefiles took different targets,
and explicitly passed ARCH=ppc64 for the 64-bit case and ARCH=ppc for
the 32-bit case.
Then in commit 94b212c29f68 ("powerpc: Move ppc64 boot wrapper code over
to arch/powerpc") (2005-11-16) we moved the boot code into arch/powerpc
and dropped the ppc case, but kept passing ARCH=ppc64 to
arch/powerpc/boot/Makefile.
Since then there have been several more boot targets added, all of which
have copied the ARCH=ppc64 setting, such that now we have four targets
using it.
Currently it seems that nothing actually uses the ARCH value, but that's
basically just luck, and in particular it prevents us from using the
generic cpp_lds_S rule. It's also clearly wrong, ARCH=ppc64 is dead,
buried and cremated.
Fix it by dropping the setting of ARCH completely, the correct value is
exported by the top level Makefile.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-21 03:14:33 -07:00
|
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
2005-09-26 00:04:21 -06:00
|
|
|
|
2015-05-25 19:36:57 -06:00
|
|
|
# Used to create 'merged defconfigs'
|
|
|
|
# To use it $(call) it with the first argument as the base defconfig
|
|
|
|
# and the second argument as a space separated list of .config files to merge,
|
|
|
|
# without the .config suffix.
|
|
|
|
define merge_into_defconfig
|
|
|
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
|
|
|
|
-m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
|
|
|
|
$(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
|
|
|
|
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
|
|
|
|
endef
|
|
|
|
|
|
|
|
PHONY += pseries_le_defconfig
|
|
|
|
pseries_le_defconfig:
|
|
|
|
$(call merge_into_defconfig,pseries_defconfig,le)
|
|
|
|
|
2015-09-22 23:40:35 -06:00
|
|
|
PHONY += ppc64le_defconfig
|
|
|
|
ppc64le_defconfig:
|
|
|
|
$(call merge_into_defconfig,ppc64_defconfig,le)
|
|
|
|
|
2017-07-24 06:50:45 -06:00
|
|
|
PHONY += powernv_be_defconfig
|
|
|
|
powernv_be_defconfig:
|
|
|
|
$(call merge_into_defconfig,powernv_defconfig,be)
|
|
|
|
|
2015-07-29 17:14:04 -06:00
|
|
|
PHONY += mpc85xx_defconfig
|
|
|
|
mpc85xx_defconfig:
|
|
|
|
$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
|
|
|
|
85xx-32bit 85xx-hw fsl-emb-nonhw)
|
|
|
|
|
|
|
|
PHONY += mpc85xx_smp_defconfig
|
|
|
|
mpc85xx_smp_defconfig:
|
|
|
|
$(call merge_into_defconfig,mpc85xx_basic_defconfig,\
|
|
|
|
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
|
|
|
|
|
|
|
|
PHONY += corenet32_smp_defconfig
|
|
|
|
corenet32_smp_defconfig:
|
|
|
|
$(call merge_into_defconfig,corenet_basic_defconfig,\
|
2016-09-22 09:04:12 -06:00
|
|
|
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
|
2015-07-29 17:14:04 -06:00
|
|
|
|
|
|
|
PHONY += corenet64_smp_defconfig
|
|
|
|
corenet64_smp_defconfig:
|
|
|
|
$(call merge_into_defconfig,corenet_basic_defconfig,\
|
2016-09-22 09:04:12 -06:00
|
|
|
85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
|
2015-07-29 17:14:04 -06:00
|
|
|
|
2016-02-22 02:26:14 -07:00
|
|
|
PHONY += mpc86xx_defconfig
|
|
|
|
mpc86xx_defconfig:
|
|
|
|
$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
|
|
|
|
86xx-hw fsl-emb-nonhw)
|
|
|
|
|
|
|
|
PHONY += mpc86xx_smp_defconfig
|
|
|
|
mpc86xx_smp_defconfig:
|
|
|
|
$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
|
|
|
|
86xx-smp 86xx-hw fsl-emb-nonhw)
|
|
|
|
|
2005-09-26 00:04:21 -06:00
|
|
|
define archhelp
|
2008-06-25 14:14:36 -06:00
|
|
|
@echo '* zImage - Build default images selected by kernel config'
|
|
|
|
@echo ' zImage.* - Compressed kernel image (arch/$(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)'
|
2005-09-26 00:04:21 -06:00
|
|
|
@echo ' install - Install kernel using'
|
2009-07-20 13:37:11 -06:00
|
|
|
@echo ' (your) ~/bin/$(INSTALLKERNEL) or'
|
|
|
|
@echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
|
2005-09-26 00:04:21 -06:00
|
|
|
@echo ' install to $$(INSTALL_PATH) and run lilo'
|
2005-11-17 21:43:34 -07:00
|
|
|
@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
|
2008-06-25 14:14:36 -06:00
|
|
|
@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).'
|
2005-09-26 00:04:21 -06:00
|
|
|
endef
|
|
|
|
|
2008-02-16 04:36:10 -07:00
|
|
|
install:
|
2008-02-06 11:18:34 -07:00
|
|
|
$(Q)$(MAKE) $(build)=$(boot) install
|
2007-04-10 05:05:31 -06:00
|
|
|
|
2007-10-02 14:30:04 -06:00
|
|
|
vdso_install:
|
|
|
|
ifeq ($(CONFIG_PPC64),y)
|
|
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
|
|
|
|
endif
|
|
|
|
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
|
|
|
|
|
2005-09-26 00:04:21 -06:00
|
|
|
archclean:
|
2005-09-27 23:53:36 -06:00
|
|
|
$(Q)$(MAKE) $(clean)=$(boot)
|
2006-02-10 02:51:07 -07:00
|
|
|
|
2005-09-26 00:04:21 -06:00
|
|
|
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
|
|
|
|
|
2012-04-17 12:42:54 -06:00
|
|
|
# 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
|
2005-09-26 00:04:21 -06:00
|
|
|
checkbin:
|
2015-08-19 09:36:41 -06:00
|
|
|
@if test "$(cc-name)" != "clang" \
|
2015-04-21 06:26:57 -06:00
|
|
|
&& test "$(cc-version)" = "0304" ; then \
|
2005-09-26 00:04:21 -06:00
|
|
|
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
|
2015-08-19 09:36:41 -06:00
|
|
|
@if test "$(cc-name)" != "clang" \
|
2015-04-21 06:26:57 -06:00
|
|
|
&& test "$(cc-version)" -lt "0400" \
|
2012-04-17 12:42:54 -06:00
|
|
|
&& 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
|
2015-08-19 09:36:41 -06:00
|
|
|
@if test "$(cc-name)" != "clang" \
|
2015-04-21 06:26:57 -06:00
|
|
|
&& test "$(cc-fullversion)" = "040200" \
|
2007-05-19 10:49:08 -06:00
|
|
|
&& 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
|
2015-04-23 01:27:12 -06:00
|
|
|
@if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \
|
|
|
|
&& $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \
|
|
|
|
echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \
|
|
|
|
echo 'in some circumstances.' ; \
|
|
|
|
echo -n '*** Please use a different binutils version.' ; \
|
|
|
|
false ; \
|
|
|
|
fi
|
|
|
|
|
2005-09-26 00:04:21 -06:00
|
|
|
|
|
|
|
CLEAN_FILES += $(TOUT)
|
|
|
|
|