419 lines
14 KiB
Makefile
419 lines
14 KiB
Makefile
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies.
|
|
#
|
|
# This file is subject to the terms and conditions of the GNU General Public
|
|
# License. See the file "COPYING" in the main directory of this archive
|
|
# for more details.
|
|
#
|
|
# Copyright (C) 1994 by Linus Torvalds
|
|
# Changes for PPC by Gary Thomas
|
|
# Rewritten by Cort Dougan and Paul Mackerras
|
|
#
|
|
|
|
ifdef cross_compiling
|
|
ifeq ($(CROSS_COMPILE),)
|
|
# Auto detect cross compiler prefix.
|
|
# Look for: (powerpc(64(le)?)?)(-unknown)?-linux(-gnu)?-
|
|
CC_ARCHES := powerpc powerpc64 powerpc64le
|
|
CC_SUFFIXES := linux linux-gnu unknown-linux-gnu
|
|
CROSS_COMPILE := $(call cc-cross-prefix, $(foreach a,$(CC_ARCHES), \
|
|
$(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
|
|
endif
|
|
endif
|
|
|
|
HAS_BIARCH := $(call cc-option-yn, -m32)
|
|
|
|
# Set default 32 bits cross compilers for vdso and boot wrapper
|
|
CROSS32_COMPILE ?=
|
|
|
|
# If we're on a ppc/ppc64/ppc64le machine use that defconfig, otherwise just use
|
|
# ppc64le_defconfig because we have nothing better to go on.
|
|
uname := $(shell uname -m)
|
|
KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64le)_defconfig
|
|
|
|
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
|
|
|
|
ifeq ($(new_nm),y)
|
|
NM := $(NM) --synthetic
|
|
endif
|
|
|
|
# BITS is used as extension for files which are available in a 32 bit
|
|
# and a 64 bit version to simplify shared Makefiles.
|
|
# e.g.: obj-y += foo_$(BITS).o
|
|
export BITS
|
|
|
|
ifdef CONFIG_PPC64
|
|
BITS := 64
|
|
else
|
|
BITS := 32
|
|
endif
|
|
|
|
machine-y = ppc
|
|
machine-$(CONFIG_PPC64) += 64
|
|
machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
|
|
UTS_MACHINE := $(subst $(space),,$(machine-y))
|
|
|
|
ifeq ($(CONFIG_PPC64)$(CONFIG_LD_IS_BFD),yy)
|
|
# Have the linker provide sfpr if possible.
|
|
# There is a corresponding test in arch/powerpc/lib/Makefile
|
|
KBUILD_LDFLAGS_MODULE += --save-restore-funcs
|
|
else
|
|
KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
|
|
endif
|
|
|
|
ifdef CONFIG_CPU_LITTLE_ENDIAN
|
|
KBUILD_CFLAGS += -mlittle-endian
|
|
KBUILD_LDFLAGS += -EL
|
|
LDEMULATION := lppc
|
|
GNUTARGET := powerpcle
|
|
MULTIPLEWORD := -mno-multiple
|
|
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mbig-endian)
|
|
KBUILD_LDFLAGS += -EB
|
|
LDEMULATION := ppc
|
|
GNUTARGET := powerpc
|
|
MULTIPLEWORD := -mmultiple
|
|
endif
|
|
|
|
ifdef CONFIG_PPC64
|
|
ifndef CONFIG_CC_IS_CLANG
|
|
cflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(call cc-option,-mabi=elfv1)
|
|
cflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(call cc-option,-mcall-aixdesc)
|
|
aflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(call cc-option,-mabi=elfv1)
|
|
aflags-$(CONFIG_PPC64_ELF_ABI_V2) += -mabi=elfv2
|
|
endif
|
|
endif
|
|
|
|
ifndef CONFIG_CC_IS_CLANG
|
|
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align
|
|
endif
|
|
|
|
cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
|
|
cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
|
|
aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
|
|
aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
|
|
|
|
ifeq ($(HAS_BIARCH),y)
|
|
KBUILD_CFLAGS += -m$(BITS)
|
|
KBUILD_AFLAGS += -m$(BITS)
|
|
KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION)
|
|
endif
|
|
|
|
cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard=tls
|
|
ifdef CONFIG_PPC64
|
|
cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r13
|
|
else
|
|
cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r2
|
|
endif
|
|
|
|
LDFLAGS_vmlinux-y := -Bstatic
|
|
LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
|
|
LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) += -z notext
|
|
LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
|
|
|
|
ifdef CONFIG_PPC64
|
|
ifndef CONFIG_PPC_KERNEL_PCREL
|
|
ifeq ($(call cc-option-yn,-mcmodel=medium),y)
|
|
# -mcmodel=medium breaks modules because it uses 32bit offsets from
|
|
# the TOC pointer to create pointers where possible. Pointers into the
|
|
# percpu data area are created by this method.
|
|
#
|
|
# The kernel module loader relocates the percpu data section from the
|
|
# original location (starting with 0xd...) to somewhere in the base
|
|
# kernel percpu data space (starting with 0xc...). We need a full
|
|
# 64bit relocation for this to work, hence -mcmodel=large.
|
|
KBUILD_CFLAGS_MODULE += -mcmodel=large
|
|
else
|
|
export NO_MINIMAL_TOC := -mno-minimal-toc
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
|
|
ifdef CONFIG_PPC64_ELF_ABI_V2
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
|
|
else
|
|
ifndef CONFIG_CC_IS_CLANG
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
|
|
endif
|
|
endif
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
|
|
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mlong-double-128)
|
|
|
|
# Clang unconditionally reserves r2 on ppc32 and does not support the flag
|
|
# https://bugs.llvm.org/show_bug.cgi?id=39555
|
|
CFLAGS-$(CONFIG_PPC32) := $(call cc-option, -ffixed-r2)
|
|
|
|
# Clang doesn't support -mmultiple / -mno-multiple
|
|
# https://bugs.llvm.org/show_bug.cgi?id=39556
|
|
CFLAGS-$(CONFIG_PPC32) += $(call cc-option, $(MULTIPLEWORD))
|
|
|
|
CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata)
|
|
|
|
ifdef CONFIG_FUNCTION_TRACER
|
|
ifdef CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENTRY
|
|
KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY
|
|
CC_FLAGS_FTRACE := -fpatchable-function-entry=2
|
|
else
|
|
CC_FLAGS_FTRACE := -pg
|
|
ifdef CONFIG_MPROFILE_KERNEL
|
|
CC_FLAGS_FTRACE += -mprofile-kernel
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CONFIG_TARGET_CPU)
|
|
AFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CONFIG_TARGET_CPU)
|
|
|
|
CFLAGS-y += $(CONFIG_TUNE_CPU)
|
|
|
|
asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
|
|
|
|
KBUILD_CPPFLAGS += -I $(srctree)/arch/powerpc $(asinstr)
|
|
KBUILD_AFLAGS += $(AFLAGS-y)
|
|
KBUILD_CFLAGS += $(call cc-option,-msoft-float)
|
|
KBUILD_CFLAGS += $(CFLAGS-y)
|
|
CPP = $(CC) -E $(KBUILD_CFLAGS)
|
|
|
|
CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
|
|
ifdef CONFIG_CPU_BIG_ENDIAN
|
|
CHECKFLAGS += -D__BIG_ENDIAN__
|
|
else
|
|
CHECKFLAGS += -D__LITTLE_ENDIAN__
|
|
endif
|
|
|
|
ifdef CONFIG_476FPE_ERR46
|
|
KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
|
|
-T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
|
|
endif
|
|
|
|
# No prefix or pcrel
|
|
ifdef CONFIG_PPC_KERNEL_PREFIXED
|
|
KBUILD_CFLAGS += $(call cc-option,-mprefixed)
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-prefixed)
|
|
endif
|
|
ifdef CONFIG_PPC_KERNEL_PCREL
|
|
KBUILD_CFLAGS += $(call cc-option,-mpcrel)
|
|
else
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-pcrel)
|
|
endif
|
|
|
|
# No AltiVec or VSX or MMA instructions when building kernel
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-mma)
|
|
|
|
# No SPE instruction when building kernel
|
|
# (We use all available options to help semi-broken compilers)
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-spe)
|
|
KBUILD_CFLAGS += $(call cc-option,-mspe=no)
|
|
|
|
# Don't emit .eh_frame since we have no use for it
|
|
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
|
|
|
|
# Never use string load/store instructions as they are
|
|
# often slow when they are implemented at all
|
|
KBUILD_CFLAGS += $(call cc-option,-mno-string)
|
|
|
|
cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
|
|
|
|
# When using '-many -mpower4' gas will first try and find a matching power4
|
|
# mnemonic and failing that it will allow any valid mnemonic that GAS knows
|
|
# about. GCC will pass -many to GAS when assembling, clang does not.
|
|
# LLVM IAS doesn't understand either flag: https://github.com/ClangBuiltLinux/linux/issues/675
|
|
# but LLVM IAS only supports ISA >= 2.06 for Book3S 64 anyway...
|
|
cpu-as-$(CONFIG_PPC_BOOK3S_64) += $(call as-option,-Wa$(comma)-mpower4) $(call as-option,-Wa$(comma)-many)
|
|
|
|
KBUILD_AFLAGS += $(cpu-as-y)
|
|
KBUILD_CFLAGS += $(cpu-as-y)
|
|
|
|
KBUILD_AFLAGS += $(aflags-y)
|
|
KBUILD_CFLAGS += $(cflags-y)
|
|
|
|
# Default to zImage, override when needed
|
|
all: zImage
|
|
|
|
# With make 3.82 we cannot mix normal and wildcard targets
|
|
BOOT_TARGETS1 := zImage zImage.initrd uImage vmlinux.strip
|
|
BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
|
|
|
|
PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
|
|
|
|
boot := arch/powerpc/boot
|
|
|
|
$(BOOT_TARGETS1): vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
|
$(BOOT_TARGETS2): vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
|
|
|
|
|
PHONY += bootwrapper_install
|
|
bootwrapper_install:
|
|
$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
|
|
|
|
include $(srctree)/scripts/Makefile.defconf
|
|
|
|
generated_configs += ppc64le_defconfig
|
|
ppc64le_defconfig:
|
|
$(call merge_into_defconfig,ppc64_defconfig,le)
|
|
|
|
generated_configs += ppc64le_guest_defconfig
|
|
ppc64le_guest_defconfig:
|
|
$(call merge_into_defconfig,ppc64_defconfig,le guest kvm_guest)
|
|
|
|
generated_configs += ppc64_guest_defconfig
|
|
ppc64_guest_defconfig:
|
|
$(call merge_into_defconfig,ppc64_defconfig,be guest kvm_guest)
|
|
|
|
generated_configs += pseries_le_defconfig
|
|
pseries_le_defconfig: ppc64le_guest_defconfig
|
|
|
|
generated_configs += pseries_defconfig
|
|
pseries_defconfig: ppc64le_guest_defconfig
|
|
|
|
generated_configs += powernv_be_defconfig
|
|
powernv_be_defconfig:
|
|
$(call merge_into_defconfig,powernv_defconfig,be)
|
|
|
|
generated_configs += mpc85xx_defconfig
|
|
mpc85xx_defconfig:
|
|
$(call merge_into_defconfig,mpc85xx_base.config,\
|
|
85xx-32bit 85xx-hw fsl-emb-nonhw)
|
|
|
|
generated_configs += mpc85xx_smp_defconfig
|
|
mpc85xx_smp_defconfig:
|
|
$(call merge_into_defconfig,mpc85xx_base.config,\
|
|
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
|
|
|
|
generated_configs += corenet32_smp_defconfig
|
|
corenet32_smp_defconfig:
|
|
$(call merge_into_defconfig,corenet_base.config,\
|
|
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
|
|
|
|
generated_configs += corenet64_smp_defconfig
|
|
corenet64_smp_defconfig:
|
|
$(call merge_into_defconfig,corenet_base.config,\
|
|
85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
|
|
|
|
generated_configs += mpc86xx_defconfig
|
|
mpc86xx_defconfig:
|
|
$(call merge_into_defconfig,mpc86xx_base.config,\
|
|
86xx-hw fsl-emb-nonhw)
|
|
|
|
generated_configs += mpc86xx_smp_defconfig
|
|
mpc86xx_smp_defconfig:
|
|
$(call merge_into_defconfig,mpc86xx_base.config,\
|
|
86xx-smp 86xx-hw fsl-emb-nonhw)
|
|
|
|
generated_configs += ppc32_allmodconfig
|
|
ppc32_allmodconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \
|
|
-f $(srctree)/Makefile allmodconfig
|
|
|
|
generated_configs += ppc_defconfig
|
|
ppc_defconfig:
|
|
$(call merge_into_defconfig,book3s_32.config,)
|
|
|
|
generated_configs += ppc64le_allmodconfig
|
|
ppc64le_allmodconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \
|
|
-f $(srctree)/Makefile allmodconfig
|
|
|
|
generated_configs += ppc64le_allnoconfig
|
|
ppc64le_allnoconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/ppc64le.config \
|
|
-f $(srctree)/Makefile allnoconfig
|
|
|
|
generated_configs += ppc64_book3e_allmodconfig
|
|
ppc64_book3e_allmodconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \
|
|
-f $(srctree)/Makefile allmodconfig
|
|
|
|
generated_configs += ppc32_randconfig
|
|
ppc32_randconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/32-bit.config \
|
|
-f $(srctree)/Makefile randconfig
|
|
|
|
generated_configs += ppc64_randconfig
|
|
ppc64_randconfig:
|
|
$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/64-bit.config \
|
|
-f $(srctree)/Makefile randconfig
|
|
|
|
PHONY += $(generated_configs)
|
|
|
|
define archhelp
|
|
echo '* zImage - Build default images selected by kernel config'
|
|
echo ' zImage.* - Compressed kernel image (arch/powerpc/boot/zImage.*)'
|
|
echo ' uImage - U-Boot native image format'
|
|
echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
|
|
echo ' versions which do not support device trees'
|
|
echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
|
|
echo ' simpleImage.<dt> - Firmware independent image.'
|
|
echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
|
|
echo ' install - Install kernel using'
|
|
echo ' (your) ~/bin/$(INSTALLKERNEL) or'
|
|
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
|
|
echo ' install to $$(INSTALL_PATH) and run lilo'
|
|
echo ' *_defconfig - Select default config from arch/powerpc/configs'
|
|
echo ''
|
|
echo ' Targets with <dt> embed a device tree blob inside the image'
|
|
echo ' These targets support board with firmware that does not'
|
|
echo ' support passing a device tree directly. Replace <dt> with the'
|
|
echo ' name of a dts file from the arch/powerpc/boot/dts/ directory'
|
|
echo ' (minus the .dts extension).'
|
|
echo
|
|
$(foreach cfg,$(generated_configs),
|
|
printf " %-27s - Build for %s\\n" $(cfg) $(subst _defconfig,,$(cfg));)
|
|
endef
|
|
|
|
PHONY += install
|
|
install:
|
|
$(call cmd,install)
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
# We need to generate vdso-offsets.h before compiling certain files in kernel/.
|
|
# In order to do that, we should use the archprepare target, but we can't since
|
|
# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
|
|
# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
|
|
# Therefore we need to generate the header after prepare0 has been made, hence
|
|
# this hack.
|
|
prepare: vdso_prepare
|
|
vdso_prepare: prepare0
|
|
$(if $(CONFIG_VDSO32),$(Q)$(MAKE) \
|
|
$(build)=arch/powerpc/kernel/vdso include/generated/vdso32-offsets.h)
|
|
$(if $(CONFIG_PPC64),$(Q)$(MAKE) \
|
|
$(build)=arch/powerpc/kernel/vdso include/generated/vdso64-offsets.h)
|
|
endif
|
|
|
|
archprepare: checkbin
|
|
|
|
archheaders:
|
|
$(Q)$(MAKE) $(build)=arch/powerpc/kernel/syscalls all
|
|
|
|
ifdef CONFIG_STACKPROTECTOR
|
|
prepare: stack_protector_prepare
|
|
|
|
PHONY += stack_protector_prepare
|
|
stack_protector_prepare: prepare0
|
|
ifdef CONFIG_PPC64
|
|
$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
|
|
else
|
|
$(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
|
|
endif
|
|
endif
|
|
|
|
PHONY += checkbin
|
|
checkbin:
|
|
@if test "x${CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT}" = "xy" -a \
|
|
"x${CONFIG_LD_IS_BFD}" = "xy" -a \
|
|
"${CONFIG_LD_VERSION}" = "23700" ; then \
|
|
echo -n '*** binutils 2.37 drops unused section symbols, which recordmcount ' ; \
|
|
echo 'is unable to handle.' ; \
|
|
echo '*** Please use a different binutils version.' ; \
|
|
false ; \
|
|
fi
|